CN2577055Y - Frictionless hard-sealing butterfly valve - Google Patents
Frictionless hard-sealing butterfly valve Download PDFInfo
- Publication number
- CN2577055Y CN2577055Y CN 02243237 CN02243237U CN2577055Y CN 2577055 Y CN2577055 Y CN 2577055Y CN 02243237 CN02243237 CN 02243237 CN 02243237 U CN02243237 U CN 02243237U CN 2577055 Y CN2577055 Y CN 2577055Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- section
- butterfly plate
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a hard-sealed butterfly valve without friction, which is composed of a valve body, a valve cover and a control end, wherein, a valve seat, a butterfly plate and a joint bearing are arranged in the valve body, and the control end comprises a supporting sleeve on the upper part of the valve body, a thread sleeve arranged in a cavity of the valve cover, a hard sealed pad, a soft sealed assembly, a gland bush, a bearing, a dustproof cover, back nuts, a supporting block, a handwheel, an upper gland bush and fastening bolts. A valve stem is arranged in the cavity of the thread sleeve, the upper end part of the valve stem is provided with a double thread buckle section connected with an inner double thread buckle of the thread sleeve, the middle part of the valve stem is provided with an outer spline section matched with a guiding sleeve arranged in the cavity of the valve body, and the lower end of the valve stem is provided with a locking deflective section, a disengaged spiral section and a positioned straight deflective section. The lower end of the valve stem is inserted in the middle parts of two circular shaft pins arranged in an inner cavity at the upper part of the butterfly plate, holes in the lower part of the butterfly plate are matched with a lower shaft and the joint bearing, and lower top screws connected by a threaded buckle are arranged in the lower end part of the valve body. The utility model has the advantages of novel design, compact structure, no abrasion, safe fire protection, no leakage and rapidity for opening and closing.
Description
Technical field
The utility model relates to a kind of no friction hard-sealing butterfly valve.
Background technique
The butterfly valve of traditional single off-centre, two off-centre or three-dimension type all exists friction problem basically in opening-closing process, service time one is long, easily causes internal and outernal leakage.Butterfly plate torque force when rotating is big simultaneously, the operation effort, and be subjected to the restriction that Environmental Conditions comprises flowing medium temperature, pressure.
The model utility content
The purpose of this utility model be to overcome the defective that prior art exists and provide a kind of and be not subjected to the Environmental Conditions restriction, do not have friction, do not have leak, torque force is little, operation is light, keying does not have friction hard-sealing butterfly valve rapidly.
The purpose of this utility model realizes by following technological scheme: a kind of no friction hard-sealing butterfly valve, by valve body, valve gap, tightening nut, bolt and control end constitute, described valve body is equipped with valve seat and butterfly plate in the chamber, joint shaft bearing, described control end includes body cavity top supporting sleeve is housed, swivel nut is housed in the valve cover cavity, hard sealing gasket, pad, the soft seal group, gland, bearing, dust-proof cover, the back of the body is female, anchor plate, the handwheel of adjusting nut and end thereof, upper press cover, clamping bolt, in its described swivel nut chamber valve rod is housed, described valve rod upper end portion is provided with double thread screw button section and is connected with the interior double thread screw button of swivel nut, the middle part is provided with the spline guide pin bushing that outer spline section and valve body chamber internal upper part be provided with and is complementary, the underpart is provided with inclined to one side section of locking Dou, break away from the straight section partially in spiral section and location, insert in the middle of the two circular shaft pins that are provided with in the inner chamber of butterfly plate top described valve rod lower end, described butterfly plate lower hole and lower shaft, joint shaft bearing matches, and is provided with the following jackscrew that connects by screw buckle in the described valve body lower end portion.
The utility model butterfly valve adopts above-mentioned design proposal, and its modern design, compact structure, no wearing and tearing, fire safety, nothing are leaked, opened and closed rapidly, can realize electronic, pneumatic or manually-operable, have use value.
Description of drawings
Fig. 1 is the utility model structure sectional view;
Fig. 2 is a valve rod schematic representation of the present utility model.
Embodiment
Below in conjunction with drawings and Examples in detail the utility model is described in detail.
Shown in Fig. 1-2, a kind of no friction hard-sealing butterfly valve, comprise by valve body (13), valve gap (23), tightening nut (8), bolt (9) and control end constitute, valve seat (27) and butterfly plate (29) are housed in described valve body (13) chamber, joint shaft bearing (15), described control end includes valve body (13) inner chamber top soft seal (24) is housed, supporting sleeve (12), valve gap (23) is equipped with swivel nut (6) in the chamber, hard sealing gasket (7), pad (22), soft seal group (21), gland (5), bearing (4), dust-proof cover (3), the back of the body female (20), anchor plate (19), the handwheel (17) of adjusting nut (18) and end thereof, upper press cover (2), clamping bolt (1).In its described swivel nut (6) chamber valve rod (11) is housed, described valve rod (11) upper end portion is provided with double thread screw button section (30) and is connected with the interior double thread screw button of swivel nut (6), the middle part is provided with outer spline section (31) and is complementary with the spline guide pin bushing (10) that valve body (13) chamber internal upper part is provided with, the underpart is provided with the inclined to one side section of locking Dou (32), disengaging spiral section (33) and the straight inclined to one side section in location (34) of three kinds of functions, insert in the middle of the two circular shaft pins (28) that are provided with in the inner chamber of butterfly plate (29) top described valve rod (11) lower end, slidably match described butterfly plate (29) lower hole and lower shaft.(14), joint shaft bearing (15) matches, be provided with the following jackscrew (16) of can regulate butterfly plate (29) position that is connected by screw buckle in described valve body (13) underpart, described valve body (13) is established soft seal pad (26) valve seat (27) retaining screw (25) and is valve seat combination on the right side.
The utility model working procedure is as follows: when stirring the rotation of handwheel (17) clockwise direction, the valve rod (11) that links to each other with swivel nut (6) is done to downward movement, because of being subjected to the control of spline segment (31), valve rod (11) can only be made straight line motion downward or upward, can not rotate.When valve rod (11) continues to produce the effect of wedge power when coming downwards to bottom locking tiltedly inclined to one side section (32), butterfly plate (29) is close to valve seat (27), be closed state, cut off media flow.When handwheel (17) counterclockwise rotates, valve rod (11) is done to upstroke, be subjected to tiltedly inclined to one side section (32) counter-force effect to drive a butterfly plate (a 29) disengaging valve seat (27) and produce certain clearance, when valve rod (11) continues when up, two circular shaft pins (28) in the inner chamber of butterfly plate (29) top are subjected to the twisting force of valve rod (11) underpart spiral section (33), force butterfly plate (29) breaking away under valve seat (27) situation 90 ° of rotations, do not produce friction with valve seat (27), when the up termination of valve rod (11), two circular shaft pins (28) are in the straight section (34) partially in location of valve rod (11) lower end, butterfly plate (29) breaks away from valve seat (27) fully and is open-minded, be opening state, media flow.
Claims (1)
1, a kind of no friction hard-sealing butterfly valve, by valve body (13), valve gap (23), tightening nut (8), bolt (9) and control end constitute, valve seat (27) and butterfly plate (29) are housed in described valve body (13) chamber, joint shaft bearing (15), described control end includes valve body (13) inner chamber top supporting sleeve (12) is housed, valve gap (23) is equipped with swivel nut (6) in the chamber, hard sealing gasket (7), pad (22), soft seal group (21), gland (5), bearing (4), dust-proof cover (3), the back of the body female (20), anchor plate (19), the handwheel (17) of adjusting nut (18) and end thereof, upper press cover (2), clamping bolt (1), it is characterized in that: described swivel nut (6) is equipped with valve rod (11) in the chamber, described valve rod (11) upper end portion is provided with double thread screw button section (30) and is connected with the interior double thread screw button of swivel nut (6), the middle part is provided with outer spline section (31) and is complementary with the spline guide pin bushing (10) that valve body (13) chamber internal upper part is provided with, the underpart is provided with locking Dou section (32) partially, break away from the straight section (34) partially in spiral section (33) and location, insert in the middle of the two circular shaft pins (28) that are provided with in the inner chamber of butterfly plate (29) top described valve rod (11) lower end, described butterfly plate (29) lower hole and lower shaft (14), joint shaft bearing (15) matches, and is provided with the following jackscrew (16) that connects by screw buckle in described valve body (13) underpart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02243237 CN2577055Y (en) | 2002-07-22 | 2002-07-22 | Frictionless hard-sealing butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02243237 CN2577055Y (en) | 2002-07-22 | 2002-07-22 | Frictionless hard-sealing butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2577055Y true CN2577055Y (en) | 2003-10-01 |
Family
ID=33715540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02243237 Expired - Fee Related CN2577055Y (en) | 2002-07-22 | 2002-07-22 | Frictionless hard-sealing butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2577055Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575623A (en) * | 2010-02-18 | 2012-07-11 | 三菱电机株式会社 | Valve shaft leakage reduction structure |
-
2002
- 2002-07-22 CN CN 02243237 patent/CN2577055Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575623A (en) * | 2010-02-18 | 2012-07-11 | 三菱电机株式会社 | Valve shaft leakage reduction structure |
| CN102575623B (en) * | 2010-02-18 | 2015-06-17 | 三菱电机株式会社 | Valve shaft leakage reduction structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |