CN2738044Y - External releasing liquid control change valve - Google Patents
External releasing liquid control change valve Download PDFInfo
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- CN2738044Y CN2738044Y CN 200420037900 CN200420037900U CN2738044Y CN 2738044 Y CN2738044 Y CN 2738044Y CN 200420037900 CN200420037900 CN 200420037900 CN 200420037900 U CN200420037900 U CN 200420037900U CN 2738044 Y CN2738044 Y CN 2738044Y
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Abstract
The utility model relates to an out releasing type hydraulic operated directional valve which is used for controlling a coal-mine hydraulic supporting frame to start to spray water and stop spraying water. The utility model is mainly composed of a valve body, a valve core, a valve seat, a push rod, a diversion sleeve, an inflow opening, an outflow opening, a control opening and sealing members, wherein a leaking liquid collecting cavity, an out releasing passage and an out releasing outlet are arranged between an emulsified liquid sealing member and a water sealing member; the leaking liquid collecting cavity is communicated with external environment by the out releasing passage and the out releasing outlet. Emulsified liquid and water which leak from the sealing positions of the sealing members, are drained by the leaking liquid collecting cavity, the out releasing passage and the out releasing outlet; the phenomenon that leak pressure is accumulated and raise is avoided; besides, the pressure is equal at the rear parts of the sealing members namely the position of the leaking liquid collecting cavity and the external environment. The utility model creates favorable sealing conditions for the sealing members, and the service life of the sealing members and the out releasing type hydraulic operated directional valve is extended. Because the leaking liquid is exhausted, the observation and detection is convenient; the damage condition and damage position of the sealing members can be found and judged by observing the leaking liquid; the utility model is convenient to repair and replace. Liquid leakage is stopped, and production work is ensured to be normally carried out.
Description
Technical field
The utility model relates to the selector valve of coal mine hydraulic supporting atomizing de-dusting system, the pilot operated directional control valve of hydraulic support atomizing de-dusting system especially, a kind of formula pilot operated directional control valve that leaks.
Background technique
The pilot operated directional control valve of coal mine hydraulic supporting atomizing de-dusting system is driven by emulsified liquid, finishes the switch control to water, realizes the unlatching of spraying system and stops.
The pilot operated directional control valve in prior art field does not have outer outfall, and leakage fluid gathers, and leakage fluid liquid collecting cavity accumulation of pressure is raise, and destroys the working environment of Sealing, influences the proper functioning of Sealing.In case and seal failure, must cause string liquid, influence the proper functioning of hydraulic support atomizing de-dusting system.
Summary of the invention
Purpose of design of the present utility model is to overcome the deficiency that pilot operated directional control valve exists in the prior art, there is annular to reveal the liquid liquid collecting cavity between a kind of emulsified liquid Sealing and the water sealing member and provide, the passage that radially leaks is arranged, annular leak passage and outer outfall are arranged, annular is revealed the liquid liquid collecting cavity by the passage that radially leaks, annular leak passage and outer outfall and external environment connect, the emulsified liquid or the water that leak are in time discharged from outer outfall, avoid leakage fluid to gather the formula that the leaks pilot operated directional control valve that accumulation raises with leak pressure.
Purpose of design of the present utility model can reach by following measure:
The formula that leaks pilot operated directional control valve, comprise valve body, spool, valve seat, push rod, water conservancy diversion cover, inflow port, go out head piece, control mouth, there is annular to reveal the liquid liquid collecting cavity between emulsified liquid Sealing and the water sealing member, the passage that radially leaks is arranged, the annular passage that leaks is arranged, outer outfall is arranged, and annular is revealed the liquid liquid collecting cavity by the passage that radially leaks, annular leak passage and outer outfall and external environment connect.
Purpose of design of the present utility model can also reach by following measure:
This formula pilot operated directional control valve that leaks is single hydraulic control formula pilot operated directional control valve that leaks.
This formula pilot operated directional control valve that leaks is the double hydraulic control formula pilot operated directional control valve that leaks.
Single hydraulic control formula pilot operated directional control valve that leaks, comprise integrated type water conservancy diversion cover, single hydraulic control leaks and emulsified liquid Sealing and water sealing member is housed in the circular groove of integrated type water conservancy diversion cover of formula pilot operated directional control valve, between the inner ring emulsified liquid Sealing of integrated type water conservancy diversion cover and the water sealing member annular leakage fluid liquid collecting cavity is arranged, the passage that radially leaks is radially arranged, there is the annular passage that leaks the outer ring, the helical thread portion of integrated type water conservancy diversion cover has outer outfall, and annular leakage fluid liquid collecting cavity is by the passage that radially leaks, annular leak passage and outer outfall and external environment connect.
Single hydraulic control formula pilot operated directional control valve that leaks, comprise integrated type water conservancy diversion cover, single hydraulic control leaks and emulsified liquid Sealing and water sealing member is housed in the circular groove of water conservancy diversion cover of formula pilot operated directional control valve, between the inner ring emulsified liquid Sealing of integrated type water conservancy diversion cover and the water sealing member annular leakage fluid liquid collecting cavity is arranged, the passage that radially leaks is radially arranged, there is the annular passage that leaks the outer ring, outer outfall is arranged on the valve body, and annular leakage fluid liquid collecting cavity is by the passage that radially leaks, annular leak outer outfall and external environment connect on passage and the valve body.
Single hydraulic control formula pilot operated directional control valve that leaks, comprise water conservancy diversion cover, separation sleeve and joint, separation sleeve is installed between water conservancy diversion cover and the joint, the emulsified liquid Sealing is housed in the circular groove of joint, in the circular groove of water conservancy diversion cover water sealing member is housed, the inner ring of separation sleeve has annular leakage fluid liquid collecting cavity, the passage that radially leaks is radially arranged, there is the annular passage that leaks the outer ring, the helical thread portion of joint has outer outfall, and annular leakage fluid liquid collecting cavity is by the passage that radially leaks, annular leak passage and outer outfall and external environment connect.
Single hydraulic control formula pilot operated directional control valve that leaks, comprise water conservancy diversion cover, separation sleeve and joint, separation sleeve is installed between water conservancy diversion cover and the joint, the emulsified liquid Sealing is housed in the circular groove of joint, in the circular groove of water conservancy diversion cover water sealing member is housed, the inner ring of separation sleeve has annular leakage fluid liquid collecting cavity, the passage that radially leaks is radially arranged, there is the annular passage that leaks the outer ring, outer outfall is arranged on the valve body, and annular leakage fluid liquid collecting cavity is by the passage that radially leaks, annular leak outer outfall and external environment connect on passage and the valve body.
The double hydraulic control formula pilot operated directional control valve that leaks, comprise two two integrated type water conservancy diversion covers, double hydraulic control leaks and emulsified liquid Sealing and water sealing member is housed in the circular groove of two integrated type water conservancy diversion cover of formula pilot operated directional control valve respectively, between the inner ring emulsified liquid Sealing of two integrated type water conservancy diversion covers and the water sealing member annular leakage fluid liquid collecting cavity is arranged respectively, the passage that radially leaks is radially respectively arranged, respectively there is the annular passage that leaks the outer ring, the helical thread portion of two water conservancy diversion covers respectively has outer outfall, and the annular leakage fluid liquid collecting cavity of two integrated type water conservancy diversion covers is respectively by its passage that radially leaks, annular leak passage and outer outfall and external environment connect.
The double hydraulic control formula pilot operated directional control valve that leaks, comprise two two integrated type water conservancy diversion covers, double hydraulic control leaks and emulsified liquid Sealing and water sealing member is housed in the circular groove of two integrated type water conservancy diversion cover of formula pilot operated directional control valve respectively, between the inner ring emulsified liquid Sealing of two integrated type water conservancy diversion covers and the water sealing member annular leakage fluid liquid collecting cavity is arranged respectively, the passage that radially leaks is radially respectively arranged, respectively there is the annular passage that leaks the outer ring, the annular of corresponding two integrated type water conservancy diversion cover leaks has two outer outfalls on the passage valve body, and the annular leakage fluid liquid collecting cavity that two integrated type water conservancy diversion overlap is respectively by its passage that radially leaks, annular corresponding outer outfall and the external environment connect on passage and the valve body that leak.
The double hydraulic control formula pilot operated directional control valve that leaks, comprise two water conservancy diversion covers, two separation sleeves and two joints, two separation sleeves are installed in respectively between corresponding the water conservancy diversion cover and joint, the emulsified liquid Sealing respectively is housed in the circular groove of two joints, in the circular groove of two water conservancy diversion covers water sealing member is housed respectively, the inner ring of two separation sleeves respectively has annular leakage fluid liquid collecting cavity, the passage that radially leaks is radially respectively arranged, respectively there is the annular passage that leaks the outer ring, the helical thread portion of two joints respectively has outer outfall, and the annular leakage fluid liquid collecting cavity of two separation sleeves is respectively by its passage that radially leaks, annular leak outer outfall and external environment connect on passage and the corresponding joints.
The double hydraulic control formula pilot operated directional control valve that leaks, comprise two water conservancy diversion covers, two separation sleeves and two joints, two separation sleeves are installed in respectively between corresponding the water conservancy diversion cover and joint, the emulsified liquid Sealing respectively is housed in the circular groove of two joints, in the circular groove of two water conservancy diversion covers water sealing member is housed respectively, the inner ring of two separation sleeves respectively has annular leakage fluid liquid collecting cavity, the passage that radially leaks is radially respectively arranged, respectively there is the annular passage that leaks the outer ring, the annular of corresponding two separation sleeves leaks has two outer outfalls on the passage valve body, and the annular leakage fluid liquid collecting cavity of two separation sleeves is respectively by its passage that radially leaks, annular corresponding outer outfall and the external environment connect on passage and the valve body that leak.
The utility model compared with prior art has significant advantage:
1, because the formula pilot operated directional control valve that leaks has annular to reveal liquid liquid collecting cavity, radially leak passage, annular leak passage and outer outfall, annular is revealed the liquid liquid collecting cavity by the passage that radially leaks, annular leak passage and outer outfall and external environment connect, the emulsified liquid or the water that leak are in time discharged from outer outfall, avoided leakage fluid to gather and leak pressure accumulation rising, create advantage for the seal operation of Sealing, prolonged the working life of Sealing and pilot operated directional control valve.
2, because the formula pilot operated directional control valve that leaks has annular to reveal liquid liquid collecting cavity, radially leak passage, annular leak passage and outer outfall, annular is revealed the liquid liquid collecting cavity by the passage that radially leaks, annular leak passage and outer outfall and external environment connect, the emulsified liquid or the water that leak are in time discharged from outer outfall, stopped string liquid, guaranteed the proper functioning of hydraulic support atomizing de-dusting system, for advantageous conditions has been created in the safety in production in colliery.
3, because the formula pilot operated directional control valve that leaks has annular to reveal liquid liquid collecting cavity, radially leak passage, annular leak passage and outer outfall, annular is revealed the liquid liquid collecting cavity by the passage that radially leaks, annular leak passage and outer outfall and external environment connect, the emulsified liquid or the water that leak are in time discharged from outer outfall, have made things convenient for to observe to detect.Can find and judge the damaged condition and the damaged location of Sealing by observing leakage fluid, be convenient to on-call maintenance and change.Guaranteed the proper functioning of hydraulic support atomizing de-dusting system, for advantageous conditions has been created in the safety in production in colliery.
Description of drawings
Fig. 1: the leak structural representation of formula pilot operated directional control valve of single hydraulic control of the present utility model.
Fig. 2: the leak A-A sectional view of formula pilot operated directional control valve of single hydraulic control shown in Figure 1.
Fig. 3: the leak B-B sectional view of formula pilot operated directional control valve of single hydraulic control shown in Figure 1.
Fig. 4: the leak structural representation of formula pilot operated directional control valve of single hydraulic control of the present utility model.
Fig. 5: the leak C-C sectional view of formula pilot operated directional control valve of single hydraulic control shown in Figure 4.
Fig. 6: the leak structural representation of formula pilot operated directional control valve of single hydraulic control of the present utility model.
Fig. 7: the leak D-D sectional view of formula pilot operated directional control valve of single hydraulic control shown in Figure 6.
Fig. 8: the leak E-E sectional view of formula pilot operated directional control valve of single hydraulic control shown in Figure 6.
Fig. 9: the leak structural representation of formula pilot operated directional control valve of single hydraulic control of the present utility model.
Figure 10: the leak F-F sectional view of formula pilot operated directional control valve of single hydraulic control shown in Figure 9.
Figure 11: the leak structural representation of formula pilot operated directional control valve of double hydraulic control of the present utility model.
Figure 12: the leak G-G sectional view of formula pilot operated directional control valve of double hydraulic control shown in Figure 11.
Figure 13: the leak H-H sectional view of formula pilot operated directional control valve of double hydraulic control shown in Figure 11.
Figure 14: the leak structural representation of formula pilot operated directional control valve of double hydraulic control of the present utility model.
Figure 15: the leak I-I sectional view of formula pilot operated directional control valve of double hydraulic control shown in Figure 14.
Figure 16: the leak structural representation of formula pilot operated directional control valve of double hydraulic control of the present utility model.
Figure 17: the leak J-J sectional view of formula pilot operated directional control valve of double hydraulic control shown in Figure 16.
Figure 18: the leak K-K sectional view of formula pilot operated directional control valve of double hydraulic control shown in Figure 16.
Figure 19: the leak structural representation of formula pilot operated directional control valve of double hydraulic control of the present utility model.
Figure 20: the leak L-L sectional view of formula pilot operated directional control valve of double hydraulic control shown in Figure 19.
Embodiment
Below in conjunction with drawings and Examples the utility model is done and to be described in further detail:
Embodiment one
Fig. 1, Fig. 2 and Fig. 3 are the leak structural representations of formula pilot operated directional control valve of single hydraulic control of the present utility model.Single hydraulic control of this structure leaks, and the formula pilot operated directional control valve comprises valve body (1), spool (2), valve seat (3), push rod (4), integrated type water conservancy diversion cover (5), integrated type water conservancy diversion cover (6), spring (7), screw plug (8), inflow port (9), goes out head piece (10), control mouthful (11).Emulsified liquid Sealing (12) and water sealing member (13) are housed in the circular groove of integrated type water conservancy diversion cover (5).Water sealing member (13) is housed in the circular groove of integrated type water conservancy diversion cover (6).Between the inner ring emulsified liquid Sealing (12) of integrated type water conservancy diversion cover (5) and the water sealing member (13) annular leakage fluid liquid collecting cavity (14) is arranged, the passage (15) that radially leaks is radially arranged, there is the annular passage (16) that leaks the outer ring.The helical thread portion of integrated type water conservancy diversion cover (5) has outer outfall (17).Annular leakage fluid liquid collecting cavity (14) is by the passage that radially leaks (15), annular leak passage (16) and outer outfall (17) and external environment connect.
Single hydraulic control of this structure emulsified liquid or water that the formula pilot operated directional control valve leaks out from the sealing position of emulsified liquid Sealing (12) and water sealing member (13) in commutation process and in the course of the work that leaks accumulates in the annular leakage fluid liquid collecting cavity (14), and in time is discharged in the external environment by leak passage (16) and outer outfall (17) of the passage that radially leaks (15), annular.
Because annular leakage fluid liquid collecting cavity (14) is by the passage that radially leaks (15), annular leak passage (16) and outer outfall (17) and external environment connect, leakage fluid is in time discharged, avoided leakage fluid to gather and leak pressure accumulation rising, the rear portion that has guaranteed emulsified liquid Sealing (12) and water sealing member (13) is that annular leakage fluid liquid collecting cavity (14) is located and the external environment equipressure, for the seal operation of emulsified liquid Sealing (12) and water sealing member (13) has been created advantage, prolonged the working life of emulsified liquid Sealing (12) and water sealing member (13), leaked working life of formula pilot operated directional control valve thereby prolonged single hydraulic control.
Because annular leakage fluid liquid collecting cavity (14) is by the passage that radially leaks (15), annular leak passage (16) and outer outfall (17) and external environment connect, leakage fluid is in time discharged, and has made things convenient for the observation detection.Can in time find and judge the damaged condition and the damaged location of Sealing by observing leakage fluid, so that on-call maintenance is changed.Simultaneously, stop string liquid, guaranteed normally carrying out smoothly of production work.
Embodiment two
Fig. 4 and Fig. 5 are the leak structural representations of another kind of structure of formula pilot operated directional control valve of single hydraulic control of the present utility model.Single hydraulic control of this structure formula pilot operated directional control valve that leaks is that the outer outfall (17) on the helical thread portion of embodiment one integrated type water conservancy diversion cover (5) is removed, and outfall (18) forms outside valve body (1) is offered.Emulsified liquid Sealing (12) and water sealing member (13) are housed in the circular groove of integrated type water conservancy diversion cover (5).Water sealing member (13) is housed in the circular groove of integrated type water conservancy diversion cover (6).Between the inner ring emulsified liquid Sealing (12) of integrated type water conservancy diversion cover (5) and the water sealing member (13) annular leakage fluid liquid collecting cavity (14) is arranged, the passage (15) that radially leaks is radially arranged, there is the annular passage (16) that leaks the outer ring.Outer outfall (18) is arranged on the valve body (1).Annular leakage fluid liquid collecting cavity (14) is by the passage that radially leaks (15), annular leak outer outfall (18) and external environment connect on passage (16) and the valve body (1).
Single hydraulic control of this structure emulsified liquid or water that the formula pilot operated directional control valve leaks out from the sealing position of emulsified liquid Sealing (12) and water sealing member (13) in commutation process and in the course of the work that leaks accumulates in the annular leakage fluid liquid collecting cavity (14), and the outer outfall (18) that leaks on passage (16) and the valve body (1) by the passage that radially leaks (15), annular in time is discharged in the external environment.
Because annular leakage fluid liquid collecting cavity (14) is by the passage that radially leaks (15), annular leak outer outfall (18) and external environment connect on passage (16) and the valve body (1), leakage fluid is in time discharged, avoided leakage fluid to gather and leak pressure accumulation rising, the rear portion that has guaranteed emulsified liquid Sealing (12) and water sealing member (13) is that annular leakage fluid liquid collecting cavity (14) is located and the external environment equipressure, for the seal operation of emulsified liquid Sealing (12) and water sealing member (13) has been created advantage, prolonged the working life of emulsified liquid Sealing (12) and water sealing member (13), leaked working life of formula pilot operated directional control valve thereby prolonged single hydraulic control.
Because annular leakage fluid liquid collecting cavity (14) is by the passage that radially leaks (15), annular leak outer outfall (18) and external environment connect on passage (16) and the valve body (1), leakage fluid is in time discharged, and has made things convenient for to observe detection.Can in time find and judge the damaged condition and the damaged location of Sealing by observing leakage fluid, so that on-call maintenance is changed.Simultaneously, stop string liquid, guaranteed normally carrying out smoothly of production work.
Embodiment three
Fig. 6, Fig. 7 and Fig. 8 are the leak structural representations of another kind of structure of formula pilot operated directional control valve of single hydraulic control of the present utility model.Single hydraulic control of this structure formula pilot operated directional control valve that leaks is that embodiment one integrated type water conservancy diversion cover (5) is divided into water conservancy diversion cover (19), separation sleeve (20) and joint (21), integrated type water conservancy diversion cover (6) be divided into water conservancy diversion cover (22), separation sleeve (23) forms.Separation sleeve (20) is installed between water conservancy diversion cover (19) and the joint (21).Separation sleeve (23) is installed between water conservancy diversion cover (22) and the screw plug (8).Emulsified liquid Sealing (12) is housed in the circular groove of joint (21).Water sealing member (13) is housed in the circular groove of water conservancy diversion cover (19) and water conservancy diversion cover (22).The inner ring of separation sleeve (20) has annular leakage fluid liquid collecting cavity (24), and the passage (25) that radially leaks is radially arranged, and there is the annular passage (26) that leaks the outer ring.The helical thread portion of joint (21) has outer outfall (27).Annular leakage fluid liquid collecting cavity (24) is by the passage that radially leaks (25), annular leak passage (26) and outer outfall (27) and external environment connect.
Single hydraulic control of this structure emulsified liquid or water that the formula pilot operated directional control valve leaks out from the sealing position of emulsified liquid Sealing (12) and water sealing member (13) in commutation process and in the course of the work that leaks accumulates in the annular leakage fluid liquid collecting cavity (24), and in time is discharged in the external environment by leak passage (26) and outer outfall (27) of the passage that radially leaks (25), annular.
Because annular leakage fluid liquid collecting cavity (24) is by the passage that radially leaks (25), annular leak passage (26) and outer outfall (27) and external environment connect, leakage fluid is in time discharged, avoided leakage fluid to gather and leak pressure accumulation rising, the rear portion that has guaranteed emulsified liquid Sealing (12) and water sealing member (13) is that annular leakage fluid liquid collecting cavity (24) is located and the external environment equipressure, for the seal operation of emulsified liquid Sealing (12) and water sealing member (13) has been created advantage, prolonged the working life of emulsified liquid Sealing (12) and water sealing member (13), leaked working life of formula pilot operated directional control valve thereby prolonged single hydraulic control.
Because annular leakage fluid liquid collecting cavity (24) is by the passage that radially leaks (25), annular leak passage (26) and outer outfall (27) and external environment connect, leakage fluid is in time discharged, and has made things convenient for the observation detection.Can in time find and judge the damaged condition and the damaged location of Sealing by observing leakage fluid, so that on-call maintenance is changed.Simultaneously, stop string liquid, guaranteed normally carrying out smoothly of production work.
Embodiment four
Fig. 9 and Figure 10 are the leak structural representations of another kind of structure of formula pilot operated directional control valve of single hydraulic control of the present utility model.Single hydraulic control of this structure formula pilot operated directional control valve that leaks is that the outer outfall (27) on the helical thread portion of embodiment three joint (21) is removed, and among the embodiment two the outer outfall (18) on the valve body (1) forms and use.Separation sleeve (20) is installed between water conservancy diversion cover (19) and the joint (21).Separation sleeve (23) is installed between water conservancy diversion cover (22) and the screw plug (8).Emulsified liquid Sealing (12) is housed in the circular groove of joint (21).Water sealing member (13) is housed in the circular groove of water conservancy diversion cover (19) and water conservancy diversion cover (22).The inner ring of separation sleeve (20) has annular leakage fluid liquid collecting cavity (24), and the passage (25) that radially leaks is radially arranged, and there is the annular passage (26) that leaks the outer ring.Outer outfall (18) is arranged on the valve body (1).Annular leakage fluid liquid collecting cavity (24) is by the passage that radially leaks (25), annular leak outer outfall (18) and external environment connect on passage (26) and the valve body (1).
Single hydraulic control of this structure emulsified liquid or water that the formula pilot operated directional control valve leaks out from the sealing position of emulsified liquid Sealing (12) and water sealing member (13) in commutation process and in the course of the work that leaks accumulates in the annular leakage fluid liquid collecting cavity (24), and the outer outfall (18) that leaks on passage (26) and the valve body (1) by the passage that radially leaks (25), annular in time is discharged in the external environment.
Because annular leakage fluid liquid collecting cavity (24) is by the passage that radially leaks (25), annular leak outer outfall (18) and external environment connect on passage (26) and the valve body (1), leakage fluid is in time discharged, avoided leakage fluid to gather and leak pressure accumulation rising, the rear portion that has guaranteed emulsified liquid Sealing (12) and water sealing member (13) is that annular leakage fluid liquid collecting cavity (24) is located and the external environment equipressure, for the seal operation of emulsified liquid Sealing (12) and water sealing member (13) has been created advantage, prolonged the working life of emulsified liquid Sealing (12) and water sealing member (13), leaked working life of formula pilot operated directional control valve thereby prolonged single hydraulic control.
Because annular leakage fluid liquid collecting cavity (24) is by the passage that radially leaks (25), annular leak outer outfall (18) and external environment connect on passage (26) and the valve body (1), leakage fluid is in time discharged, and has made things convenient for to observe detection.Can in time find and judge the damaged condition and the damaged location of Sealing by observing leakage fluid, so that on-call maintenance is changed.Simultaneously, stop string liquid, guaranteed normally carrying out smoothly of production work.
Embodiment five
Figure 11, Figure 12 and Figure 13 are the leak structural representations of formula pilot operated directional control valve of double hydraulic control of the present utility model.The double hydraulic control of this structure formula pilot operated directional control valve that leaks is that integrated type water conservancy diversion cover (6), spring (7), screw plug (8) embodiment one removes, and the integrated type water conservancy diversion cover (28) identical with integrated type water conservancy diversion cover (5) is installed and is controlled that mouth (29) forms.Emulsified liquid Sealing (12) and water sealing member (13) are housed in the circular groove of integrated type water conservancy diversion cover (5) and integrated type water conservancy diversion cover (28).Between the inner ring emulsified liquid Sealing (12) of integrated type water conservancy diversion cover (5) and the water sealing member (13) annular leakage fluid liquid collecting cavity (14) is arranged, the passage (15) that radially leaks is radially arranged, there is the annular passage (16) that leaks the outer ring.The helical thread portion of integrated type water conservancy diversion cover (5) has outer outfall (17).Annular leakage fluid liquid collecting cavity (14) is by the passage that radially leaks (15), annular leak passage (16) and outer outfall (17) and external environment connect.Between the inner ring emulsified liquid Sealing (12) of integrated type water conservancy diversion cover (28) and the water sealing member (13) annular leakage fluid liquid collecting cavity (30) is arranged, the passage (31) that radially leaks is radially arranged, there is the annular passage (32) that leaks the outer ring.The helical thread portion of integrated type water conservancy diversion cover (28) has outer outfall (33).Annular leakage fluid liquid collecting cavity (30) is by the passage that radially leaks (31), annular leak passage (32) and outer outfall (33) and external environment connect.
The double hydraulic control of this structure emulsified liquid or the water that the formula pilot operated directional control valve leaks out from the sealing position of emulsified liquid Sealing (12) and water sealing member (13) in commutation process and in the course of the work that leaks accumulates in annular leakage fluid liquid collecting cavity (14) and the annular leakage fluid liquid collecting cavity (30), and in time is discharged in the external environment by the passage that radially leaks (15), annular the leak passage (32), outer outfall (33) of passage (16), outer outfall (17) and the passage (31) that radially leaks, annular that leak respectively.
Because annular leakage fluid liquid collecting cavity (14) and annular leakage fluid liquid collecting cavity (30) are respectively by the passage that radially leaks (15), the annular passage (16) that leaks, the outer outfall (17) and the passage (31) that radially leaks, the annular passage (32) that leaks, outer outfall (33) and external environment connect, leakage fluid is in time discharged, avoided leakage fluid to gather and leak pressure accumulation rising, the rear portion that has guaranteed emulsified liquid Sealing (12) and water sealing member (13) is that annular leakage fluid liquid collecting cavity (14) and annular leakage fluid liquid collecting cavity (30) are located and the external environment equipressure, for the seal operation of emulsified liquid Sealing (12) and water sealing member (13) has been created advantage, prolonged the working life of emulsified liquid Sealing (12) and water sealing member (13), leaked working life of formula pilot operated directional control valve thereby prolonged double hydraulic control.
Because annular leakage fluid liquid collecting cavity (14) and annular leakage fluid liquid collecting cavity (30) are respectively by the passage that radially leaks (15), annular leak passage (16), outer outfall (17) and the passage (31) that radially leaks, annular leak passage (32), outer outfall (33) and external environment connect, leakage fluid is in time discharged, and has made things convenient for to observe to detect.Can in time find and judge the damaged condition and the damaged location of Sealing by observing leakage fluid, so that on-call maintenance is changed.Simultaneously, stop string liquid, guaranteed normally carrying out smoothly of production work.
Embodiment six
Figure 14 and Figure 15 are the leak structural representations of another kind of structure of formula pilot operated directional control valve of double hydraulic control of the present utility model.The double hydraulic control of this structure formula pilot operated directional control valve that leaks is that the outer outfall (17) on the helical thread portion of embodiment five integrated type water conservancy diversion cover (5) is removed, and the outer outfall (18) on the use valve body (1), outer outfall (33) on the helical thread portion of embodiment five integrated type water conservancy diversion cover (28) is removed, and outfall (34) forms outside offering on valve body (1).Emulsified liquid Sealing (12) and water sealing member (13) are housed in the circular groove of integrated type water conservancy diversion cover (5) and integrated type water conservancy diversion cover (28).Between the inner ring emulsified liquid Sealing (12) of integrated type water conservancy diversion cover (5) and the water sealing member (13) annular leakage fluid liquid collecting cavity (14) is arranged, the passage (15) that radially leaks is radially arranged, there is the annular passage (16) that leaks the outer ring.Outer outfall (18) is arranged on the valve body (1).Annular leakage fluid liquid collecting cavity (14) is by the passage that radially leaks (15), annular leak outer outfall (18) and external environment connect on passage (16) and the valve body (1).Between the inner ring emulsified liquid Sealing (12) of integrated type water conservancy diversion cover (28) and the water sealing member (13) annular leakage fluid liquid collecting cavity (30) is arranged, the passage (31) that radially leaks is radially arranged, there is the annular passage (32) that leaks the outer ring.Outer outfall (34) is arranged on the valve body (1).Annular leakage fluid liquid collecting cavity (30) is by the passage that radially leaks (31), annular leak outer outfall (34) and external environment connect on passage (32) and the valve body (1).
The double hydraulic control of this structure emulsified liquid or the water that the formula pilot operated directional control valve leaks out from the sealing position of emulsified liquid Sealing (12) and water sealing member (13) in commutation process and in the course of the work that leaks accumulates in annular leakage fluid liquid collecting cavity (14) and the annular leakage fluid liquid collecting cavity (30), and in time is discharged in the external environment by the passage that radially leaks (15), the annular outer outfall (34) that outer outfall (18) on passage (16), the valve body (1) and the passage (31) that radially leaks, annular leak on passage (32), the valve body (1) that leaks respectively.
Because annular leakage fluid liquid collecting cavity (14) and annular leakage fluid liquid collecting cavity (30) are respectively by the passage that radially leaks (15), the annular passage (16) that leaks, the outer outfall (18) on the valve body (1) and the passage (31) that radially leaks, the annular passage (32) that leaks, outer outfall (34) and external environment connect on the valve body (1), leakage fluid is in time discharged, avoided leakage fluid to gather and leak pressure accumulation rising, the rear portion that has guaranteed emulsified liquid Sealing (12) and water sealing member (13) is that annular leakage fluid liquid collecting cavity (14) and annular leakage fluid liquid collecting cavity (30) are located and the external environment equipressure, for the seal operation of emulsified liquid Sealing (12) and water sealing member (13) has been created advantage, prolonged the working life of emulsified liquid Sealing (12) and water sealing member (13), leaked working life of formula pilot operated directional control valve thereby prolonged double hydraulic control.
Because annular leakage fluid liquid collecting cavity (14) and annular leakage fluid liquid collecting cavity (30) are respectively by the passage that radially leaks (15), annular leak outer outfall (18) on passage (16), the valve body (1) and the passage (31) that radially leaks, annular leak outer outfall (34) and external environment connect on passage (32), the valve body (1), leakage fluid is in time discharged, and has made things convenient for to observe to detect.Can in time find and judge the damaged condition and the damaged location of Sealing by observing leakage fluid, so that on-call maintenance is changed.Simultaneously, stop string liquid, guaranteed normally carrying out smoothly of production work.
Embodiment seven
Figure 16, Figure 17 and Figure 18 are the leak structural representations of another kind of structure of formula pilot operated directional control valve of double hydraulic control of the present utility model.The double hydraulic control of this structure formula pilot operated directional control valve that leaks is that embodiment five integrated type water conservancy diversion cover (5) is divided into water conservancy diversion cover (19), separation sleeve (20) and joint (21), integrated type water conservancy diversion cover (28) is divided into water conservancy diversion cover (35), separation sleeve (36) and joint (37) form.Separation sleeve (20) is installed between water conservancy diversion cover (19) and the joint (21).Separation sleeve (36) is installed between water conservancy diversion cover (35) and the joint (37).Emulsified liquid Sealing (12) is housed in the circular groove of joint (21) and joint (37).Water sealing member (13) is housed in the circular groove of water conservancy diversion cover (19) and water conservancy diversion cover (35).The inner ring of separation sleeve (20) has annular leakage fluid liquid collecting cavity (24), and the passage (25) that radially leaks is radially arranged, and there is the annular passage (26) that leaks the outer ring.The helical thread portion of joint (21) has outer outfall (27).Annular leakage fluid liquid collecting cavity (24) is by the passage that radially leaks (25), annular leak passage (26) and outer outfall (27) and external environment connect.The inner ring of separation sleeve (36) has annular leakage fluid liquid collecting cavity (38), and the passage (39) that radially leaks is radially arranged, and there is the annular passage (40) that leaks the outer ring.The helical thread portion of joint (37) has outer outfall (41).Annular leakage fluid liquid collecting cavity (38) is by the passage that radially leaks (39), annular leak passage (40) and outer outfall (41) and external environment connect.
The double hydraulic control of this structure emulsified liquid or the water that the formula pilot operated directional control valve leaks out from the sealing position of emulsified liquid Sealing (12) and water sealing member (13) in commutation process and in the course of the work that leaks accumulates in respectively annular leakage fluid liquid collecting cavity (24) and the annular leakage fluid liquid collecting cavity (38), and in time is discharged in the external environment by the passage that radially leaks (25), annular the leak passage (40), outer outfall (41) of passage (26), outer outfall (27) and the passage (39) that radially leaks, annular that leak respectively.
Because annular leakage fluid liquid collecting cavity (24) and annular leakage fluid liquid collecting cavity (38) are respectively by the passage that radially leaks (25), the annular passage (26) that leaks, the outer outfall (27) and the passage (39) that radially leaks, the annular passage (40) that leaks, outer outfall (41) respectively with external environment connect, leakage fluid is in time discharged, avoided leakage fluid to gather and leak pressure accumulation rising, the rear portion that has guaranteed emulsified liquid Sealing (12) and water sealing member (13) is that annular leakage fluid liquid collecting cavity (24) and annular leakage fluid liquid collecting cavity (38) are located and the external environment equipressure, for the seal operation of emulsified liquid Sealing (12) and water sealing member (13) has been created advantage, prolonged the working life of emulsified liquid Sealing (12) and water sealing member (13), leaked working life of formula pilot operated directional control valve thereby prolonged double hydraulic control.
Since annular leakage fluid liquid collecting cavity (24) and annular leakage fluid liquid collecting cavity (38) respectively by the passage that radially leaks (25), annular leak passage (26), outer outfall (27) and the passage (39) that radially leaks, annular leak passage (40), outer outfall (41) respectively with external environment connect, leakage fluid is in time discharged, and has made things convenient for to observe to detect.Can in time find and judge the damaged condition and the damaged location of Sealing by observing leakage fluid, so that on-call maintenance is changed.Simultaneously, stop string liquid, guaranteed normally carrying out smoothly of production work.
Embodiment eight
Figure 19 and Figure 20 are the leak structural representations of another kind of structure of formula pilot operated directional control valve of double hydraulic control of the present utility model.The double hydraulic control of this structure formula pilot operated directional control valve that leaks is that the outer outfall (27) on the helical thread portion of embodiment seven joint (21) is removed, and the outer outfall (18) on the use valve body (1), outer outfall (41) on the helical thread portion of embodiment seven joint (37) is removed, and the outer outfall (34) on the use valve body (1) forms.Separation sleeve (20) is installed between water conservancy diversion cover (19) and the joint (21).Separation sleeve (36) is installed between water conservancy diversion cover (35) and the joint (37).Emulsified liquid Sealing (12) is housed in the circular groove of joint (21) and joint (37).Water sealing member (13) is housed in the circular groove of water conservancy diversion cover (19) and water conservancy diversion cover (35).The inner ring of separation sleeve (20) has annular leakage fluid liquid collecting cavity (24), and the passage (25) that radially leaks is radially arranged, and there is the annular passage (26) that leaks the outer ring.Annular leakage fluid liquid collecting cavity (24) is by the passage that radially leaks (25), annular leak outer outfall (18) and external environment connect on passage (26) and the valve body (1).The inner ring of separation sleeve (36) has annular leakage fluid liquid collecting cavity (38), and the passage (39) that radially leaks is radially arranged, and there is the annular passage (40) that leaks the outer ring.Annular leakage fluid liquid collecting cavity (38) is by the passage that radially leaks (39), annular leak outer outfall (34) and external environment connect on passage (40) and the valve body (1).
The double hydraulic control of this structure emulsified liquid or the water that the formula pilot operated directional control valve leaks out from the sealing position of emulsified liquid Sealing (12) and water sealing member (13) in commutation process and in the course of the work that leaks accumulates in respectively annular leakage fluid liquid collecting cavity (24) and the annular leakage fluid liquid collecting cavity (38), and in time is discharged in the external environment by the passage that radially leaks (25), the annular outer outfall (34) that outer outfall (18) on passage (26), the valve body (1) and the passage (39) that radially leaks, annular leak on passage (40), the valve body (1) that leaks respectively.
Because annular leakage fluid liquid collecting cavity (24) and annular leakage fluid liquid collecting cavity (38) are respectively by the passage that radially leaks (25), the annular passage (26) that leaks, the outer outfall (18) on the valve body (1) and the passage (39) that radially leaks, the annular passage (40) that leaks, outer outfall (34) and external environment connect on the valve body (1), leakage fluid is in time discharged, avoided leakage fluid to gather and leak pressure accumulation rising, the rear portion that has guaranteed emulsified liquid Sealing (12) and water sealing member (13) is that annular leakage fluid liquid collecting cavity (24) and annular leakage fluid liquid collecting cavity (38) are located and the external environment equipressure, for the seal operation of emulsified liquid Sealing (12) and water sealing member (13) has been created advantage, prolonged the working life of emulsified liquid Sealing (12) and water sealing member (13), leaked working life of formula pilot operated directional control valve thereby prolonged double hydraulic control.
Because annular leakage fluid liquid collecting cavity (24) and annular leakage fluid liquid collecting cavity (38) are respectively by the passage that radially leaks (25), annular leak outer outfall (18) on passage (26), the valve body (1) and the passage (39) that radially leaks, annular leak outer outfall (34) and external environment connect on passage (40), the valve body (1), leakage fluid is in time discharged, and has made things convenient for to observe to detect.Can in time find and judge the damaged condition and the damaged location of Sealing by observing leakage fluid, so that on-call maintenance is changed.Simultaneously, stop string liquid, guaranteed normally carrying out smoothly of production work.
Claims (11)
1, a kind of formula that leaks pilot operated directional control valve that is used for coal mine hydraulic supporting atomizing de-dusting system, comprise valve body, spool, valve seat, push rod, water conservancy diversion cover, inflow port, go out head piece, control mouth, it is characterized in that having between emulsified liquid Sealing and the water sealing member annular to reveal the liquid liquid collecting cavity, the passage that radially leaks is arranged, the annular passage that leaks is arranged, outer outfall is arranged, and annular is revealed the liquid liquid collecting cavity by the passage that radially leaks, annular leak passage and outer outfall and external environment connect.
2, the formula pilot operated directional control valve that leaks according to claim 1 is characterized in that the said formula pilot operated directional control valve that leaks is single hydraulic control formula pilot operated directional control valve that leaks.
3, the formula pilot operated directional control valve that leaks according to claim 1 is characterized in that the said formula pilot operated directional control valve that leaks is the double hydraulic control formula pilot operated directional control valve that leaks.
4, single hydraulic control according to claim 2 formula pilot operated directional control valve that leaks, it is characterized in that said single hydraulic control formula pilot operated directional control valve that leaks, comprise integrated type water conservancy diversion cover (5), emulsified liquid Sealing (12) and water sealing member (13) are housed in the circular groove of integrated type water conservancy diversion cover (5), between the inner ring emulsified liquid Sealing (12) of integrated type water conservancy diversion cover (5) and the water sealing member (13) annular leakage fluid liquid collecting cavity (14) is arranged, the passage (15) that radially leaks is radially arranged, there is the annular passage (16) that leaks the outer ring, the helical thread portion of integrated type water conservancy diversion cover (5) has outer outfall (17), and annular leakage fluid liquid collecting cavity (14) is by the passage that radially leaks (15), annular leak passage (16) and outer outfall (17) and external environment connect.
5, single hydraulic control according to claim 2 formula pilot operated directional control valve that leaks, it is characterized in that said single hydraulic control formula pilot operated directional control valve that leaks, comprise integrated type water conservancy diversion cover (5), emulsified liquid Sealing (12) and water sealing member (13) are housed in the circular groove of integrated type water conservancy diversion cover (5), between the inner ring emulsified liquid Sealing (12) of integrated type water conservancy diversion cover (5) and the water sealing member (13) annular leakage fluid liquid collecting cavity (14) is arranged, the passage (15) that radially leaks is radially arranged, there is the annular passage (16) that leaks the outer ring, outer outfall (18) is arranged on the valve body (1), and annular leakage fluid liquid collecting cavity (14) is by the passage that radially leaks (15), annular leak outer outfall (18) and external environment connect on passage (16) and the valve body (1).
6, single hydraulic control according to claim 2 formula pilot operated directional control valve that leaks, it is characterized in that said single hydraulic control formula pilot operated directional control valve that leaks, comprise water conservancy diversion cover (19), separation sleeve (20) and joint (21), separation sleeve (20) is installed between water conservancy diversion cover (19) and the joint (21), emulsified liquid Sealing (12) is housed in the circular groove of joint (21), water sealing member (13) is housed in the circular groove of water conservancy diversion cover (19), the inner ring of separation sleeve (20) has annular leakage fluid liquid collecting cavity (24), the passage (25) that radially leaks is radially arranged, there is the annular passage (26) that leaks the outer ring, the helical thread portion of joint (21) has outer outfall (27), and annular leakage fluid liquid collecting cavity (24) is by the passage that radially leaks (25), annular leak passage (26) and outer outfall (27) and external environment connect.
7, single hydraulic control according to claim 2 formula pilot operated directional control valve that leaks, it is characterized in that said single hydraulic control formula pilot operated directional control valve that leaks, comprise water conservancy diversion cover (19), separation sleeve (20) and joint (21), separation sleeve (20) is installed between water conservancy diversion cover (19) and the joint (21), emulsified liquid Sealing (12) is housed in the circular groove of joint (21), water sealing member (13) is housed in the circular groove of water conservancy diversion cover (19), the inner ring of separation sleeve (20) has annular leakage fluid liquid collecting cavity (24), the passage (25) that radially leaks is radially arranged, there is the annular passage (26) that leaks the outer ring, outer outfall (18) is arranged on the valve body (1), and annular leakage fluid liquid collecting cavity (24) is by the passage that radially leaks (25), annular leak outer outfall (18) and external environment connect on passage (26) and the valve body (1).
8, the double hydraulic control according to claim 3 formula pilot operated directional control valve that leaks, it is characterized in that the said double hydraulic control formula pilot operated directional control valve that leaks, comprise integrated type water conservancy diversion cover (5) and integrated type water conservancy diversion cover (28), emulsified liquid Sealing (12) and water sealing member (13) are housed in the circular groove of integrated type water conservancy diversion cover (5), between the inner ring emulsified liquid Sealing (12) of integrated type water conservancy diversion cover (5) and the water sealing member (13) annular leakage fluid liquid collecting cavity (14) is arranged, the passage (15) that radially leaks is radially arranged, there is the annular passage (16) that leaks the outer ring, the helical thread portion of integrated type water conservancy diversion cover (5) has outer outfall (17), annular leakage fluid liquid collecting cavity (14) is by the passage that radially leaks (15), annular leak passage (16) and outer outfall (17) and external environment connect, emulsified liquid Sealing (12) and water sealing member (13) are housed in the circular groove of integrated type water conservancy diversion cover (28), between the inner ring emulsified liquid Sealing (12) of integrated type water conservancy diversion cover (28) and the water sealing member (13) annular leakage fluid liquid collecting cavity (30) is arranged, the passage (31) that radially leaks is radially arranged, there is the annular passage (32) that leaks the outer ring, the helical thread portion of water conservancy diversion cover (28) has outer outfall (33), and annular leakage fluid liquid collecting cavity (30) is by the passage that radially leaks (31), annular leak passage (32) and outer outfall (33) and external environment connect.
9, the double hydraulic control according to claim 3 formula pilot operated directional control valve that leaks, it is characterized in that the said double hydraulic control formula pilot operated directional control valve that leaks, comprise integrated type water conservancy diversion cover (5) and integrated type water conservancy diversion cover (28), emulsified liquid Sealing (12) and water sealing member (13) are housed in the circular groove of integrated type water conservancy diversion cover (5), between the inner ring emulsified liquid Sealing (12) of integrated type water conservancy diversion cover (5) and the water sealing member (13) annular leakage fluid liquid collecting cavity (14) is arranged, the passage (15) that radially leaks is radially arranged, there is the annular passage (16) that leaks the outer ring, outer outfall (18) is arranged on the valve body (1), annular leakage fluid liquid collecting cavity (14) is by the passage that radially leaks (15), annular leak outer outfall (18) and external environment connect on passage (16) and the valve body (1), emulsified liquid Sealing (12) and water sealing member (13) are housed in the circular groove of integrated type water conservancy diversion cover (28), between the inner ring emulsified liquid Sealing (12) of integrated type water conservancy diversion cover (28) and the water sealing member (13) annular leakage fluid liquid collecting cavity (30) is arranged, the passage (31) that radially leaks is radially arranged, there is the annular passage (32) that leaks the outer ring, outer outfall (34) is arranged on the valve body (1), and annular leakage fluid liquid collecting cavity (30) is by the passage that radially leaks (31), annular leak outer outfall (34) and external environment connect on passage (32) and the valve body (1).
10, the double hydraulic control according to claim 3 formula pilot operated directional control valve that leaks, it is characterized in that the said double hydraulic control formula pilot operated directional control valve that leaks, comprise water conservancy diversion cover (19), separation sleeve (20), joint (21), water conservancy diversion cover (35), separation sleeve (36), joint (37), separation sleeve (20) is installed between water conservancy diversion cover (19) and the joint (21), separation sleeve (36) is installed between water conservancy diversion cover (35) and the joint (37), emulsified liquid Sealing (12) is housed in the circular groove of joint (21) and joint (37), water sealing member (13) is housed in the circular groove of water conservancy diversion cover (19) and water conservancy diversion cover (35), the inner ring of separation sleeve (20) has annular leakage fluid liquid collecting cavity (24), the passage (25) that radially leaks is radially arranged, there is the annular passage (26) that leaks the outer ring, the helical thread portion of joint (21) has outer outfall (27), annular leakage fluid liquid collecting cavity (24) is by the passage that radially leaks (25), annular leak passage (26) and outer outfall (27) and external environment connect, the inner ring of separation sleeve (36) has annular leakage fluid liquid collecting cavity (38), the passage (39) that radially leaks is radially arranged, there is the annular passage (40) that leaks the outer ring, the helical thread portion of joint (37) has outer outfall (41), and annular leakage fluid liquid collecting cavity (38) is by the passage that radially leaks (38), annular leak passage (40) and outer outfall (41) and external environment connect.
11, the double hydraulic control according to claim 3 formula pilot operated directional control valve that leaks, it is characterized in that the said double hydraulic control formula pilot operated directional control valve that leaks, comprise water conservancy diversion cover (19), separation sleeve (20), joint (21), water conservancy diversion cover (35), separation sleeve (36), joint (37), separation sleeve (20) is installed between water conservancy diversion cover (19) and the joint (21), separation sleeve (36) is installed between water conservancy diversion cover (35) and the joint (37), emulsified liquid Sealing (12) is housed in the circular groove of joint (21) and joint (37), water sealing member (13) is housed in the circular groove of water conservancy diversion cover (19) and water conservancy diversion cover (35), the inner ring of separation sleeve (20) has annular leakage fluid liquid collecting cavity (24), the passage (25) that radially leaks is radially arranged, there is the annular passage (26) that leaks the outer ring, outer outfall (18) is arranged on the valve body (1), annular leakage fluid liquid collecting cavity (24) is by the passage that radially leaks (25), annular leak outer outfall (18) and external environment connect on passage (26) and the valve body (1), the inner ring of separation sleeve (36) has annular leakage fluid liquid collecting cavity (38), the passage (39) that radially leaks is radially arranged, there is the annular passage (40) that leaks the outer ring, outer outfall (34) is arranged on the valve body (1), and annular leakage fluid liquid collecting cavity (38) is by the passage that radially leaks (38), annular leak outer outfall (34) and external environment connect on passage (40) and the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420037900 CN2738044Y (en) | 2004-01-12 | 2004-01-12 | External releasing liquid control change valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420037900 CN2738044Y (en) | 2004-01-12 | 2004-01-12 | External releasing liquid control change valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2738044Y true CN2738044Y (en) | 2005-11-02 |
Family
ID=35347954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420037900 Expired - Fee Related CN2738044Y (en) | 2004-01-12 | 2004-01-12 | External releasing liquid control change valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2738044Y (en) |
-
2004
- 2004-01-12 CN CN 200420037900 patent/CN2738044Y/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051102 |