CN114673803A - A mine water-based pilot valve - Google Patents

Abstract

The present application proposes a mining water-based pilot valve, comprising: a valve body, a valve body is provided with a valve hole; a valve seat, the valve seat is arranged in the valve hole; a plug, the plug is arranged in the valve hole, and the plug is connected to the valve One end of the seat is in interference fit, and a first chamber is formed between the plug and the valve seat, and the first chamber is communicated with the first port of the valve body; the liquid-passing sleeve is arranged in the valve hole, and the liquid-passing sleeve It is interference fit with the other end of the valve seat, and a second chamber is formed between the plug and the valve seat, and the second chamber is communicated with the second port of the valve body. Compared with the related art, the present application has the following advantages: Through the interference fit between the valve seat and the plug and between the valve seat and the liquid-passing sleeve, the stepped matching structure in the valve hole is realized, which ensures the stability of the overall structure of the mining water-based pilot valve and avoids setting too many for limiting It can effectively reduce the overall processing difficulty and production cost of the mining water-based pilot valve, and improve the disassembly and maintenance efficiency of the mining water-based pilot valve.

Description

A mine water-based pilot valve

technical field

The present application relates to the technical field of pilot valves, in particular to a mine water-based pilot valve.

Background technique

The mine water-based pilot valve is an auxiliary valve used to operate the control mechanism in other valves or components. Usually, the mine water-based pilot valve is used in conjunction with the main valve to pass the on-off of a single passage in the mine water-based pilot valve. , to realize the control of the main valve.

SUMMARY OF THE INVENTION

The present application aims to solve one of the technical problems in the related art at least to a certain extent.

Therefore, the purpose of this application is to propose a mine water-based pilot valve.

In order to achieve the above purpose, a mine water-based pilot valve proposed in the present application includes: a valve body, a valve body is provided with a valve hole; a valve seat, the valve seat is provided in the valve hole; a plug, The plug is arranged in the valve hole, the plug is in an interference fit with one end of the valve seat, and a first chamber is formed between the plug and the valve seat, and the first chamber The chamber communicates with the first port of the valve body; the liquid-passing sleeve is arranged in the valve hole, the liquid-passing sleeve is in interference fit with the other end of the valve seat, and the plugging A second chamber is formed between the head and the valve seat, and the second chamber communicates with the second port of the valve body; wherein a third chamber is formed between the valve seat and the inner wall of the valve hole chamber, the third chamber communicates with the third port of the valve body, and the on-off state between the first chamber and the third chamber is the same as that between the second chamber and the third chamber The on and off states between the chambers are reversed.

Optionally, the valve seat includes: a first channel and a second channel, one end of the first channel is communicated with the first chamber, and the other end of the first channel is communicated with the third chamber , one end of the second channel is communicated with the second chamber, and the other end of the second channel is communicated with the third chamber; the mining water-based pilot valve further comprises: a first closing member and A second closing member, the first closing member is disposed in the first chamber near the first passage, the second closing member is disposed in the second chamber near the second passage, so The first closing member is linked with the second closing member.

Optionally, one end of the first closing member close to the first channel is provided with a first spherical surface, and one end of the first channel close to the first closing member is provided with a first circular opening, and the first closing member is provided with a first circular opening. The sealing member is connected to the first channel through the first spherical surface and the edge of the first round mouth; one end of the second closing member close to the second channel is provided with a second spherical surface, and the second channel is provided with a second spherical surface. A second round opening is disposed near one end of the second closing member, and the second closing member is sealedly connected to the second passage through the second spherical surface and the edge of the second round opening.

Optionally, the first spherical surface, the second spherical surface, the edge of the first circular opening and the edge of the second circular opening are all made of ceramic materials.

Optionally, the edge of the first round mouth is provided with a first chamfered surface, and the first closing member is sealed with the first channel through the first spherical surface and the first chamfered surface; The edge of the second round mouth is provided with a second chamfered surface, and the second closing member and the second channel are sealed and connected through the second spherical surface and the second chamfered surface.

Optionally, a first gasket is provided on the first chamfered surface, the hardness of the first gasket is smaller than the hardness of the first chamfered surface and the first spherical surface, and the first closing member is It is connected with the first channel through the first spherical surface and the first gasket; a second gasket is arranged on the second chamfered surface, and the hardness of the second gasket is smaller than that of the second gasket. The hardness of the chamfered surface and the second spherical surface, the second closing element and the second channel are sealed and connected through the second spherical surface and the second gasket.

Optionally, the mining water-based pilot valve further comprises: a first connecting rod, the first connecting rod is slidably arranged in the valve seat along the direction from the first chamber to the second chamber , one end of the first connecting rod passes through the first passage and is close to one end of the first closing member and is connected to the first closing member, and the other end of the first connecting rod passes through the second closing member The channel is connected to the second closing member after being close to one end of the second closing member.

Optionally, the mining water-based pilot valve further includes: an elastic piece, a first chute is provided in the plug, the first chute is communicated with the first chamber, and the elastic piece is provided with In the first chute; a closing seat, the closing seat is slidably arranged in the first chute, one end of the closing seat is connected with the elastic member, and the other end of the closing seat is provided with a first a groove, the end of the first closing member away from the first channel is disposed in the first groove; the slider, a second chute is provided in the liquid-passing sleeve, the second chute communicated with the second chamber, the slider is slidably arranged in the second chute, the end of the second chute close to the second cavity is provided with a second groove, the second One end of the closing member away from the second channel is disposed in the second groove, and the sliding block is in abutment with the second closing member.

Optionally, one end of the second chute away from the slider is communicated with the third port of the valve body.

Optionally, the mining water-based pilot valve further includes: a lever, one end of the lever is hinged with the valve body; an electromagnetic push rod, the electromagnetic push rod is connected with the valve body, and the electromagnetic push rod The push rod of the second connecting rod is in contact with the other end of the second connecting rod; the second connecting rod and the second connecting rod are arranged in the liquid-passing sleeve, and one end of the second connecting rod is connected with the sliding block , the other end of the second connecting rod passes through the second chute and then contacts the lever; wherein, the second connecting rod and the electromagnetic push rod are respectively located on both sides of the lever.

After adopting the above-mentioned technical scheme, the advantages that the present application has compared with the related art are:

Through the interference fit between the valve seat and the plug and between the valve seat and the liquid-passing sleeve, the step-like matching structure in the valve hole is realized, which ensures the stability of the overall structure of the mine water-based pilot valve and avoids setting too many for limiting It can effectively reduce the overall processing difficulty and production cost of the mining water-based pilot valve, and improve the disassembly and maintenance efficiency of the mining water-based pilot valve.

Additional aspects and advantages of the present application will be set forth, in part, in the following description, and in part will be apparent from the following description, or learned by practice of the present application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

1 is a schematic structural diagram of a mine water-based pilot valve proposed in an embodiment of the present application;

2 is a schematic structural diagram of a first closing member in a mine water-based pilot valve proposed in an embodiment of the present application;

3 is a schematic structural diagram of a second closing member in a mine water-based pilot valve proposed in an embodiment of the present application;

As shown in the figure: 1. Valve body, 2. First chamber, 3. Second chamber, 4. Third chamber, 5. First closing member, 6. Second closing member, 7. Valve seat, 8, the first channel, 9, the second channel, 10, the first spherical surface, 11, the first round mouth, 12, the second spherical surface, 13, the second round mouth, 14, the first chamfered surface, 15, the second Chamfered surface, 16, first gasket, 17, second gasket, 18, first connecting rod, 19, plug, 20, first chute, 21, elastic piece, 22, closing seat, 23, over Liquid jacket, 24, Second chute, 25, Slider, 26, Lever, 27, Electromagnetic push rod, 28, Second connecting rod.

Detailed ways

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, but should not be construed as a limitation on the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

In the relevant embodiments of the present application, the valve body 1, the valve seat 7, the plug 19 and the liquid-passing sleeve 23 of the mining water-based pilot valve are provided. The valve body 1 is provided with a valve hole, and the valve seat 7 is provided in the valve hole, The plug 19 is provided in the valve hole, the plug 19 is in contact with one end of the valve seat 7 , and the liquid-passing sleeve 23 is provided in the valve hole, and the liquid-passing sleeve 23 is in contact with the other end of the valve seat 7 .

The arrangement of this structure makes the plug 19, the valve seat 7 and the liquid-passing sleeve 23 abut against the valve hole in sequence, which not only has poor stability, but also needs to be placed between the valve seat 7 and the plug 19 and between the valve seat 7 and the valve seat 7. Parts used for position limit are arranged between the liquid-passing jacket 23, so that the parts used for position limit are not easy to be taken out during the disassembly and maintenance process of the mine water-based pilot valve, which affects the disassembly and maintenance efficiency of the mine water-based pilot valve. .

In order to solve the above technical problems, as shown in FIG. 1 , an embodiment of the present application proposes a mine water-based pilot valve, which includes a valve body 1 , a valve seat 7 , a plug 19 and a liquid-passing sleeve 23 . The valve body 1 is provided with a valve body 1 . The valve hole, the valve seat 7 is arranged in the valve hole, the plug 19 is arranged in the valve hole, the plug 19 is an interference fit with one end of the valve seat 7, and the first chamber 2 is formed between the plug 19 and the valve seat 7 , the first chamber 2 is communicated with the first port of the valve body 1, the liquid-passing sleeve 23 is arranged in the valve hole, the liquid-passing sleeve 23 is in an interference fit with the other end of the valve seat 7, and the plug 19 and the valve seat 7 are in an interference fit. A second chamber 3 is formed between them, and the second chamber 3 communicates with the second port of the valve body 1;

The third chamber 4 is formed between the valve seat 7 and the inner wall of the valve hole, the third chamber 4 communicates with the third port of the valve body 1 , and the connection between the first chamber 2 and the third chamber 4 The state is opposite to the on-off state between the second chamber 3 and the third chamber 4 .

It can be understood that, through the interference fit between the valve seat 7 and the plug 19 and between the valve seat 7 and the liquid overflow sleeve 23, the stepped matching structure in the valve hole is realized, and the overall structure of the mining water-based pilot valve is guaranteed. It is stable and avoids setting more parts for position limit, which effectively reduces the overall processing difficulty and production cost of the mining water-based pilot valve, and improves the disassembly and maintenance efficiency of the mining water-based pilot valve.

In some embodiments, the outer wall of the end of the plug 19 away from the valve seat 7 is provided with an external thread, and the inner wall of the valve hole is provided with an internal thread, and the stability of the plug 19 in the valve hole is realized by the cooperation of the internal thread and the external thread. set up.

As shown in FIG. 1 , in some embodiments, the end of the valve seat 7 is provided with an annular groove, the plug 19 and the liquid-passing sleeve 23 are both provided with annular flanges, and the annular flange and the annular recess are provided with annular grooves. Slot interference fit.

As shown in FIG. 1 , in some embodiments, a sealing ring is provided at one end of the plug 19 and the liquid-passing sleeve 23 near the valve seat 7 to ensure the sealing of the first chamber 2 and the second chamber 3 .

As shown in FIG. 1 , in some embodiments, the valve seat 7 is provided with a ring groove, and a third chamber 4 is formed between the ring groove and the hole wall of the valve hole, that is, the third chamber 4 is located in the first chamber 2 and the second chamber 3.

As shown in FIG. 1 , in some embodiments, the valve seat 7 includes: a first channel 8 and a second channel 9 , one end of the first channel 8 communicates with the first chamber 2 , and the other end of the first channel 8 communicates with the first channel 8 . The three chambers 4 are communicated, one end of the second channel 9 is communicated with the second chamber 3, and the other end of the second channel 9 is communicated with the third chamber 4;

The mine water-based pilot valve further includes: a first closing member 5 and a second closing member 6, the first closing member 5 is arranged in the first chamber 2 near the first channel 8, and the second closing member 6 is arranged at the second closing member 6 In the chamber 3 close to the second channel 9 , the first closing member 5 is linked with the second closing member 6 .

It can be understood that, through the linkage arrangement of the first closing member 5 and the second closing member 6, the on-off control between the first chamber 2 and the third chamber 4, as well as the second chamber 3 and the third chamber are realized. The on-off control between the chambers 4 and the first chamber 2 and the third chamber 4 and between the second chamber 3 and the third chamber 4 cannot be turned on and off at the same time, so that the It ensures that the mine water-based pilot valve has two interlocking passages, increases the functionality of the pilot valve, and makes the pilot valve more widely used to meet the needs of use.

It should be noted that the valve body 1 is provided with a first port, a second port and a third port, through the linkage arrangement of the first closing member 5 and the second closing member 6, the first port and the third port The connection of the first port, the second port and the third port to external devices can be set according to actual application requirements.

As shown in FIG. 1 , in some embodiments, the end of the valve seat 7 close to the first chamber 2 and the end of the valve seat 7 close to the second chamber 3 are provided with sealing rings to ensure that the third chamber 4 is Sealing between the first chamber 2 and the second chamber 3 .

It should be noted that the end of the first closing member 5 opposite to the first passage 8 and the end of the first passage 8 opposite to the first closing member 5 should be adapted to each other, so that the first closing member 5 and the first passage of the valve seat 7 8 places can be sealed and fit, so as to ensure that the first chamber 2 and the third chamber 4 can be completely disconnected. Similarly, the second closing member 6 is opposite to one end of the second channel 9 and the second channel 9 is opposite to the second. One end of the closing member 6 should also be adapted to each other, so that the second closing member 6 and the second passage 9 of the valve seat 7 can be sealed and fit, so as to ensure that the second chamber 3 and the third chamber 4 can also be connected. completely disconnected.

The shape of one end of the first closing member 5 opposite to the first channel 8 and the shape of one end of the first channel 8 relative to the first closing member 5 can be set arbitrarily, so that the first closing member 5 can be sealed with the first channel 8 of the valve seat 7 The shape of one end of the second closing member 6 relative to the second channel 9 and the shape of one end of the second channel 9 relative to the second closing member 6 can also be arbitrarily set, so that the second closing member 6 and the valve seat 7 It is enough to seal and fit the channel 9.

In some embodiments, as shown in FIG. 2 , one end of the first closure member 5 close to the first channel 8 is provided with a first spherical surface 10 , and one end of the first channel 8 close to the first closure member 5 is provided with a first circular opening 11 , the first closing member 5 is connected with the first channel 8 through the edge of the first spherical surface 10 and the first round mouth 11;

As shown in FIG. 3 , one end of the second closing member 6 close to the second passage 9 is provided with a second spherical surface 12 , one end of the second passage 9 close to the second closing member 6 is provided with a second circular opening 13 , and the second closing member 6 is provided with a second round opening 13 . It is connected with the second channel 9 through the edge of the second spherical surface 12 and the second round mouth 13 in a sealed manner.

It can be understood that the first spherical surface 10 can fit the edge of the first round opening 11, and the second spherical surface 12 can fit the edge of the second round opening 13, thereby ensuring the first closing member 5 and the first channel of the valve seat 7 8 and the second closing member 6 and the second channel 9 of the valve seat 7 are sealed, so that between the first chamber 2 and the third chamber 4 and between the second chamber 3 and the third chamber The chambers 4 can be completely disconnected to ensure the stability of the mine water-based pilot valve.

As shown in FIG. 2 and FIG. 3 , in some embodiments, the overall shape of the first closing member 5 and the second closing member 6 may be spherical. It can be understood that the spherical overall structure ensures that the first spherical surface 10 and the The formation of the second spherical surface 12 is easy to process and manufacture, which effectively reduces the production cost of the mine water-based pilot valve.

It should be noted that the first spherical surface 10, the second spherical surface 12, the edge of the first round mouth 11 and the edge of the second round mouth 13 can all be made of metal materials, but when the mining water-based pilot valve is in use, the metal material It is difficult to overcome the problems of easy corrosion of water-based media, low viscosity, small water film thickness, and abrasive wear. Moreover, the mining water-based pilot valve needs to be frequently switched on and off during use, which leads to the failure of the mining water-based pilot valve. lower service life;

And because the contact area between the first spherical surface 10 and the edge of the first round mouth 11 and between the second spherical surface 12 and the edge of the second round mouth 13 is small, it is easy to cause excessive local stress, resulting in stress relaxation of the metal material. , so it is necessary to strictly control the force applied to the first closing member 5 and the second closing member 6, but the force applied to the first closing member 5 and the second closing member 6 is easily affected by the pressure in the chamber, and the first closing member 5 and the second closing member 6 are easily affected by the pressure in the chamber. The closing member 5 and the second closing member 6 require frequent actions, so the force exerted on the first closing member 5 and the second closing member 6 is difficult to control, which eventually leads to the gap between the first spherical surface 10 and the edge of the first round mouth 11 and the second closing member. The sealing performance between the two spherical surfaces 12 and the edge of the second round opening 13 is poor.

Therefore, in some embodiments, the first spherical surface 10 , the second spherical surface 12 , the edge of the first circular opening 11 and the edge of the second circular opening 13 are all made of ceramic materials.

It can be understood that the ceramic material effectively improves the hardness of the first spherical surface 10, the second spherical surface 12, the edge of the first round mouth 11 and the edge of the second round mouth 13, reduces the occurrence of stress relaxation problems, and ensures that the first spherical surface 10 and the second round mouth 13. A seal between the edges of the round mouth 11 and between the second spherical surface 12 and the edges of the second round mouth 13;

At the same time, the arrangement of ceramic materials enables the first spherical surface 10, the second spherical surface 12, the edge of the first round mouth 11 and the edge of the second round mouth 13 to have the advantages of anti-wear, anti-corrosion, high machining accuracy and high impact resistance, effectively extending the Service life of mine water-based pilot valves.

It should be noted that the first closing member 5, the second closing member 6 and the valve seat 7 can be made of ceramic materials as a whole, or only the first spherical surface 10, Ceramic materials are arranged on the second spherical surface 12 , the edge of the first round mouth 11 and the edge of the second round mouth 13 .

In some embodiments, the ceramic material may be one or more of alumina, silicon nitride, and zirconia.

It should be noted that, in the process of processing, the edge sections of the first round mouth 11 and the second round mouth 13 may be right-angled structures, between the first spherical surface 10 and the edges of the first round mouth 11 and between the second spherical surface 12 and the second round mouth 11 The contact between the edges of the round mouth 13 is initially a line contact. With the increase of stress, the deformation between the components causes the line contact to change to a surface contact, so as to finally realize the first closing member 5 and the valve seat 7. The first channel 8 The sealing fit of the valve seat 6 and the sealing fit of the second closing member 6 and the valve seat 7 at the second passage 9 .

Among them, since the edge sections of the first round mouth 11 and the second round mouth 13 are both right-angle structures, it is necessary to ensure the sealing of the first closing member 5 and the first channel 8 of the valve seat 7 and that the second closing member 6 and the The sealing at the second channel 9 of the valve seat 7 makes the first round mouth 11 and the second round mouth 13 require high precision during processing, resulting in the problems of high processing difficulty and high production cost as a whole;

Moreover, the setting of the right-angle structure will also cause stress concentration between the first spherical surface 10 and the edge of the first circular opening 11 and between the second spherical surface 12 and the edge of the second circular opening 13, which affects the first closing between the first passage 8 of the valve seat 7 and the second closing member 6 and the second passage 9 of the valve seat 7.

Therefore, in some embodiments, as shown in FIG. 2 , the edge of the first round opening 11 is provided with a first chamfered surface 14 , and the first closing member 5 and the first channel 8 pass through the first spherical surface 10 and the first chamfered surface. Surface 14 is sealed and connected;

As shown in FIG. 3 , the edge of the second round opening 13 is provided with a second chamfered surface 15 .

It can be understood that, through the arrangement of the first chamfered surface 14 and the second chamfered surface 15 , the connection between the first closing member 5 and the first passage 8 of the valve seat 7 and between the second closing member 6 and the valve seat 7 is realized. Sealing fit between the second channels 9;

The chamfered surface is easier to process than the right angle, which effectively reduces the overall processing difficulty and reduces the overall production cost;

Between the first chamfered surface 14 and the first spherical surface 10 and between the second chamfered surface 15 and the second spherical surface 12, the problem of stress concentration can be alleviated, and the gap between the first closing member 5 and the first passage 8 of the valve seat 7 can be ensured. And a stable seal between the second closure 6 and the second channel 9 of the valve seat 7 .

It should be noted that due to the limitation of the processing technology, the first chamfered surface 14, the first spherical surface 10, the second chamfered surface 15 and the second spherical surface 12 cannot be absolutely smooth, and there will inevitably be Microscopic grooves, and when the first chamfered surface 14 , the first spherical surface 10 , the second chamfered surface 15 and the second spherical surface 12 are made of ceramic materials with higher hardness, the first chamfered surface 14 and the first spherical surface 10 The axial thrust required between the second chamfered surface 15 and the second spherical surface 12 is greater, so that the gully is filled by material deformation, but the greater axial thrust is difficult to ensure, resulting in the first closing member 5 The tightness with the first channel 8 of the valve seat 7 and between the second closing member 6 and the second channel 9 of the valve seat 7 is affected.

Therefore, in some embodiments, as shown in FIG. 2 , the first chamfered surface 14 is provided with a first gasket 16 , and the hardness of the first gasket 16 is smaller than the hardness of the first chamfered surface 14 and the first spherical surface 10 . , the first closing member 5 is connected with the first channel 8 through the first spherical surface 10 and the first gasket 16;

As shown in FIG. 3 , a second gasket 17 is disposed on the second chamfered surface 15 , and the hardness of the second gasket 17 is smaller than that of the second chamfered surface 15 and the second spherical surface 12 . The two channels 9 are connected in a sealed manner through the second spherical surface 12 and the second gasket 17 .

It can be understood that, by setting the first gasket 16 and the second gasket 17 with lower hardness, when the first closing member 5 and the second closing member 6 are pressed to the first channel 8 and the second channel 9 respectively, The first gasket 16 and the second gasket 17 have large deformation, and the large deformation can fill the gully, thereby further ensuring the second closing between the first closing member 5 and the first passage 8 of the valve seat 7 and the second closing A stable seal between the second passage 9 of the valve seat 7 and the part 6;

At the same time, due to the arrangement of the first gasket 16 and the second gasket 17, the first closing element 5 and the valve seat 7 can be realized even if the axial force exerted on the first closing element 5 and the second closing element 6 is small. The sealing between the first passage 8 and the second closing member 6 and the second passage 9 of the valve seat 7 can reduce the overall processing difficulty and ensure the sealing between the first closing member 5 and the first passage 8 of the valve seat 7 A stable seal between the second closing member 6 and the second passage 9 of the valve seat 7.

In some embodiments, the roughness of the first spherical surface 10, the first chamfered surface 14, the surface of the first gasket 16, the second spherical surface 12, the second chamfered surface 15 and the surface of the second gasket 17 are all less than Ra0. 4.

In some embodiments, the material of the first gasket 16 and the second gasket 17 may be stainless steel, polyetheretherketone, or the like.

As shown in FIG. 1 , in some embodiments, the mining water-based pilot valve further includes a first connecting rod 18 , and the first connecting rod 18 is slidably disposed on the valve seat along the direction from the first chamber 2 to the second chamber 3 7, one end of the first connecting rod 18 passes through the first passage 8 and is close to one end of the first closing member 5 and is connected to the first closing member 5, and the other end of the first connecting rod 18 passes through the second passage 9 and is close to the second closing member 5. One end of the closing member 6 is then connected with the second closing member 6 .

It can be understood that, through the arrangement of the first connecting rod 18, the linkage between the first closing member 5 and the second closing member 6 is realized, so as to ensure the connection between the first chamber 2 and the third chamber 4 and the second chamber On-off interlock between 3 and the third chamber 4.

As shown in FIG. 1 , in some embodiments, the mining water-based pilot valve further includes an elastic member 21 , a closing seat 22 and a sliding block 25 , a plug 19 is arranged in the valve hole, and a first sliding block is arranged in the plug 19 Slot 20, the first chute 20 communicates with the first chamber 2, the elastic piece 21 is arranged in the first chute 20, the closing seat 22 is slidably arranged in the first chute 20, one end of the closing seat 22 is connected with the elastic piece 21 Connected, the other end of the closing seat 22 is provided with a first groove, the end of the first closing member 5 away from the first channel 8 is provided in the first groove, the liquid-passing sleeve 23 is provided with a second chute 24, the second The chute 24 is communicated with the second chamber 3, the slider 25 is slidably arranged in the second chute 24, the end of the second chute 24 close to the second chamber 3 is provided with a second groove, and the second closing member 6 is far away from One end of the second channel 9 is set in the second groove, and the slider 25 is in abutment with the second closing member 6 .

It can be understood that when no external force acts, the elastic member 21 exerts a pushing force on the closing seat 22, and the closing seat 22 moves toward the notch of the first sliding groove 20 in the first sliding groove 20, and because the first closing member 5 The end away from the first channel 8 is limited in the first groove, so under the push of the closing seat 22 , the first closing member 5 moves toward the first channel 8 and connects the first channel 8 with the first chamber 2 At the same time, the first closing member 5 drives the second closing member 6 away from the second channel 9 through the first connecting rod 18, so that the second channel 9 is connected with the second chamber 3, and the second closing member 6 pushes The slider 25 moves toward the bottom of the second chute 24 in the second chute 24 . Therefore, under the action of the elastic member 21, the first chamber 2 is disconnected from the third chamber 4, and the second chamber 3 is connected with the third chamber 4;

As shown in FIG. 1 , in some embodiments, the elastic member 21 may be a spring.

It should be noted that the second closing member 6 can be moved toward the second channel 9 by pushing the slider 25 to move toward the notch of the second sliding groove 24 in the second sliding groove 24 to overcome the elastic force of the elastic member 21 . , and disconnect the second channel 9 from the second chamber 3 , while keeping the first closing member 5 away from the first channel 8 , so that the first channel 8 and the first chamber 2 are connected. Therefore, under the action of external force, the first chamber 2 and the third chamber 4 are connected, and the second chamber 3 and the third chamber 4 are disconnected.

As shown in FIG. 1 , in some embodiments, one end of the second chute 24 away from the slider 25 communicates with the third port of the valve body 1 .

It can be understood that high-pressure liquid is introduced into the end of the second chute 24 away from the slider 25, so that the pressure in the second chute 24 is close to the pressure in the third chamber 4, so as to play a balancing role, so that when the need arises When the first chamber 2 is connected to the third chamber 4 and the second chamber 3 is disconnected from the third chamber 4, there is no need to exert an excessive thrust on the slider 25 to make the first chamber 2 and the third chamber 4 The conduction of the chamber 4 and the disconnection of the second chamber 3 and the third chamber 4 are simpler and more convenient.

As shown in FIG. 1 , in some embodiments, the mining water-based pilot valve further includes a lever 26 , an electromagnetic push rod 27 and a second connecting rod 28 . One end of the lever 26 is hinged with the valve body 1 , and the electromagnetic push rod 27 is connected to the valve body 1 . Body 1 is connected, the push rod of the electromagnetic push rod 27 is in contact with the other end of the second connecting rod 28, the second connecting rod 28 is arranged in the liquid-filled sleeve 23, one end of the second connecting rod 28 is connected with the slider 25, and the second connecting rod 28 is connected to the slider 25. The other end of the second connecting rod 28 passes through the second chute 24 and abuts against the lever 26 , wherein the second connecting rod 28 and the electromagnetic push rod 27 are located on two sides of the lever 26 respectively.

It can be understood that the slider 25 and the second link 28 form a shaft-like structure with a stepped outer surface. After the electromagnetic push rod 27 is energized, its push rod is pushed out, causing the lever 26 to rotate, and the lever 26 pushes the second link 28. The slider 25 is moved in the second chute 24 toward the notch of the second chute 24, so as to realize the conduction between the first chamber 2 and the third chamber 4 and the second chamber 3 and the third chamber 4 The disconnection is simple and convenient.

As shown in FIG. 1 , in some embodiments, a guide sleeve is fixedly arranged in the second chute 24 , the guide sleeve is located between the slider 25 and the groove bottom of the second chute 24 , and the second link 28 is slidably disposed on inside the guide sleeve, thereby ensuring the stable movement of the second link 28 .

It should be noted that, in the description of the present application, the terms "first", "second" and the like are only used for the purpose of description, and should not be construed as indicating or implying relative importance. Also, in the description of this application, unless otherwise specified, "plurality" means two or more.

Any description of a process or method in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing a specified logical function or step of the process , and the scope of the preferred embodiments of the present application includes alternative implementations in which the functions may be performed out of the order shown or discussed, including performing the functions substantially concurrently or in the reverse order depending upon the functions involved, which should It is understood by those skilled in the art to which the embodiments of the present application belong.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations to the present application. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. A water-based pilot valve for mining, comprising:

the valve body is internally provided with a valve hole;

a valve seat disposed within the valve bore;

the plug is arranged in the valve hole, the plug is in interference fit with one end of the valve seat, a first cavity is formed between the plug and the valve seat, and the first cavity is communicated with the first port of the valve body;

the liquid passing sleeve is arranged in the valve hole, the liquid passing sleeve is in interference fit with the other end of the valve seat, a second cavity is formed between the plug and the valve seat, and the second cavity is communicated with a second port of the valve body;

a third cavity is formed between the valve seat and the inner wall of the valve hole and communicated with a third port of the valve body, and the on-off state between the first cavity and the third cavity is opposite to the on-off state between the second cavity and the third cavity.

2. The mining water-based pilot valve of claim 1, wherein the valve seat comprises: one end of the first channel is communicated with the first chamber, the other end of the first channel is communicated with the third chamber, one end of the second channel is communicated with the second chamber, and the other end of the second channel is communicated with the third chamber;

the mining water-based pilot valve further comprises: the first closing element is arranged in the first chamber and close to the first passage, the second closing element is arranged in the second chamber and close to the second passage, and the first closing element is linked with the second closing element.

3. The mining water-based pilot valve of claim 2,

a first spherical surface is arranged at one end of the first closing member, which is close to the first channel, a first round opening is arranged at one end of the first channel, which is close to the first closing member, and the first closing member is connected with the first channel through the first spherical surface and the edge of the first round opening in a sealing manner;

and a second spherical surface is arranged at one end of the second closing member close to the second channel, a second round opening is arranged at one end of the second channel close to the second closing member, and the second closing member is connected with the second channel through the second spherical surface and the edge of the second round opening in a sealing manner.

4. The mining water-based pilot valve of claim 3, wherein the first spherical surface, the second spherical surface, the edge of the first round port and the edge of the second round port are all made of ceramic material.

5. The mining water-based pilot valve of claim 4,

the edge of the first round opening is provided with a first chamfer surface, and the first closing member is connected with the first channel through the first spherical surface and the first chamfer surface in a sealing manner;

and a second chamfer surface is arranged at the edge of the second round opening, and the second closing member is connected with the second channel in a sealing way through the second spherical surface and the second chamfer surface.

6. The mining water-based pilot valve of claim 5,

a first gasket is arranged on the first chamfer surface, the hardness of the first gasket is smaller than that of the first chamfer surface and the first spherical surface, and the first closing member is connected with the first channel in a sealing manner through the first spherical surface and the first gasket;

the second chamfer surface is provided with a second gasket, the hardness of the second gasket is smaller than that of the second chamfer surface and the second spherical surface, and the second closing member is connected with the second channel in a sealing mode through the second spherical surface and the second gasket.

7. The mining water-based pilot valve of any one of claims 2-6, further comprising:

the first connecting rod is arranged in the valve seat in a sliding mode along the direction from the first chamber to the second chamber, one end of the first connecting rod penetrates through the first channel and is connected with the first closing element after being close to one end of the first closing element, and the other end of the first connecting rod penetrates through the second channel and is connected with the second closing element after being close to one end of the second closing element.

8. The mining water-based pilot valve of claim 7, further comprising:

the plug is internally provided with a first sliding groove which is communicated with the first cavity, and the elastic piece is arranged in the first sliding groove;

the closing seat is arranged in the first sliding groove in a sliding mode, one end of the closing seat is connected with the elastic piece, the other end of the closing seat is provided with a first groove, and one end, far away from the first channel, of the first closing piece is arranged in the first groove;

the sliding block is arranged in the second sliding groove in a sliding mode, a second groove is formed in one end, close to the second cavity, of the second sliding groove, one end, far away from the second channel, of the second closing piece is arranged in the second groove, and the sliding block is abutted to the second closing piece.

9. The mining water-based pilot valve of claim 8, wherein an end of the second chute distal to the slider communicates with a third port of the valve body.

10. The mining water-based pilot valve of claim 8, further comprising:

the lever, one end of the said lever is hinged with said valve block;

the electromagnetic push rod is connected with the valve body, and the push rod of the electromagnetic push rod is abutted against the other end of the second connecting rod;

the second connecting rod is arranged in the liquid passing sleeve, one end of the second connecting rod is connected with the sliding block, and the other end of the second connecting rod penetrates through the second sliding groove and then abuts against the lever;

the second connecting rod and the electromagnetic push rod are respectively positioned on two sides of the lever.

Images