CN223105297U - A program-controlled valve - Google Patents
A program-controlled valveInfo
- Publication number
- CN223105297U CN223105297U CN202421862396.6U CN202421862396U CN223105297U CN 223105297 U CN223105297 U CN 223105297U CN 202421862396 U CN202421862396 U CN 202421862396U CN 223105297 U CN223105297 U CN 223105297U
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- Prior art keywords
- sealing ring
- valve
- cylinder
- conical surface
- piston
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Abstract
The utility model belongs to the technical field of valves, and particularly discloses a program control valve, wherein a valve body and a valve cover are connected to form a medium cavity, an actuating mechanism is connected to the outside of the valve cover, one end of a valve rod penetrates through the valve cover and stretches into the medium cavity to be connected with a valve core, the other end of the valve rod is connected with the actuating mechanism, the actuating mechanism comprises a cylinder fixedly connected with the valve cover and a piston which is arranged in the cylinder and can be connected with the valve rod in a sliding manner, the valve rod stretches into the cylinder and is in linkage fit connection with the piston, a first sealing ring and a second sealing ring which are arranged up and down are fixedly connected with each other are arranged on the periphery of the piston, a first conical surface which is in interference fit with the inner wall of the cylinder body is arranged on the periphery of the first sealing ring, a second conical surface which is in interference fit with the inner wall of the cylinder body is arranged on the periphery of the second sealing ring, and the inclination direction of the first conical surface is opposite to that of the second conical surface is arranged, and the problem that the piston is blocked in the cylinder is avoided when the piston moves up and down frequently in the cylinder is realized, and the service life of the piston is prolonged.
Description
Technical Field
The utility model relates to the technical field of valve equipment, in particular to a program control valve.
Background
The program-controlled valve is a cut-off valve which can be remotely controlled by a computer program and driven by pneumatic, hydraulic and other modes, and is widely applied to the pressure swing adsorption gas separation industry, such as the industries of polysilicon tail gas recovery, alcohol drying, carbon dioxide recovery and the like.
In the prior art, as in the CN201921740618.6, the piston is attached to the inner wall of the cylinder body of the cylinder through an O-shaped sealing ring, the program control valve needs to be periodically cut off during the operation process, and the operation is more frequent, and the piston with such a structure can easily incline and be blocked in the cylinder due to the repeated up-and-down movement friction, so that the program control valve fails during the operation process.
Disclosure of utility model
The utility model aims to overcome the defects and the shortcomings of the prior art and provides a program control valve.
The technical scheme adopted by the utility model is that the valve comprises a valve body, a valve cover, an actuating mechanism, a valve rod and a valve core, wherein the valve body and the valve cover are connected to form a medium cavity;
The actuating mechanism comprises a cylinder fixedly connected with the valve cover and a piston which is arranged in the cylinder and can be connected with the cylinder in a sliding way, and the valve rod extends into the cylinder to be connected with the piston in a linkage fit way;
The piston periphery fixedly connected with sets up first sealing washer and second sealing washer from top to bottom, first sealing washer periphery is equipped with the first conical surface with cylinder body inner wall interference fit, the second sealing washer periphery be equipped with cylinder body inner wall interference fit's second conical surface, the inclination of first conical surface is opposite with the inclination of second conical surface.
Preferably, the first conical surface is a conical surface with an upper size, and the second conical surface is a conical surface with a lower size and an upper size.
Preferably, the upper end of the first sealing ring is provided with a first convex ring, the lower end of the second sealing ring is provided with a second convex ring, and the peripheries of the first convex ring and the second convex ring are respectively positioned on the extension surfaces of the first conical surface and the second conical surface.
Preferably, the peripheries of the upper end and the lower end of the piston are respectively provided with a first mounting groove and a second mounting groove, and the first sealing ring and the second sealing ring are respectively embedded in the first mounting groove and the second mounting groove.
Preferably, the piston, the first sealing ring and the second sealing ring are fixedly connected through bolts, and the bolts sequentially penetrate through the first sealing ring, the piston and the second sealing ring.
Preferably, a shaft sleeve sleeved outside the valve rod is arranged in the valve cover, a packing cavity is formed between the shaft sleeve and the valve rod, packing is filled in the packing cavity, and a plurality of sealing rings are arranged on the inner side and the outer side of the shaft sleeve.
Preferably, the sealing ring comprises a third sealing ring arranged at the left side and the right side in the shaft sleeve and a fourth sealing ring arranged close to the outer side of the shaft sleeve.
Preferably, the lower end of the valve rod is connected with the upper end of the valve core in a cambered surface floating mode.
Preferably, the valve core comprises a fixed plate, a lower pressing plate and a fifth sealing ring, a fixed groove for placing and adapting to the fifth sealing ring is formed in the fixed plate, the fifth sealing ring is arranged in the fixed groove, a valve seat is arranged at a position below the valve body corresponding to the fifth sealing ring, limiting dents are arranged on two sides, close to the lower pressing plate, of the fifth sealing ring, and the lower pressing plate is connected with the limiting dents and forms a limiting abutting effect on the fifth sealing ring;
And a sixth sealing ring is arranged on one side, close to the valve rod, of the periphery of the fifth sealing ring, the fifth sealing ring and the sixth sealing ring form interference fit, and the lower end of the sixth sealing ring is connected with the upper end of the lower pressing plate.
Preferably, the program control valve comprises a long bolt, the air cylinder is sequentially provided with an upper end cover, a cylinder body and a lower end cover, and the long bolt sequentially penetrates through the upper end cover, the cylinder body and the lower end cover.
The piston has the beneficial effects that the first sealing ring and the second sealing ring which are arranged at the upper end and the lower end of the piston are matched with the inner wall of the cylinder body of the cylinder, and meanwhile, the first conical surface and the second conical surface which are respectively arranged on the first sealing ring and the second sealing ring form interference fit with the inner wall of the cylinder body of the cylinder, so that the problem that the piston is prevented from being blocked in the cylinder when the piston frequently moves up and down in the cylinder is solved, the long-time stability at the central position of the cylinder is realized, and the service life of the piston is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that it is within the scope of the utility model to one skilled in the art to obtain other drawings from these drawings without inventive faculty.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is an enlarged schematic view of A in FIG. 1;
FIG. 3 is an enlarged schematic view of B in FIG. 1;
FIG. 4 is an enlarged schematic view of C in FIG. 1;
In the figure, a valve body 1, a valve cover 2, an actuating mechanism 3, a valve rod 4 and a valve core 5 are shown;
11-valve seat, 21-filler and 22-shaft sleeve;
30-cylinder, 31-piston, 32-bolt, 33-upper end cover, 34-cylinder, 35-lower end cover and 36-long bolt;
3111-first conical surface, 3121-second conical surface, 3112-first convex ring, 3122-second convex ring, 315-first mounting slot, 316-second mounting slot;
311-a first sealing ring, 312-a second sealing ring, 313-a third sealing ring, 314-a fourth sealing ring, 317-a fifth sealing ring, 318-a sixth sealing ring;
51-fixed plate, 52-lower pressing plate, 54-fixed groove and 55-limit recess.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.
It should be noted that, in the embodiments of the present utility model, all the expressions "first" and "second" are used to distinguish two entities with the same name but different entities or different parameters, and it is noted that the "first" and "second" are only used for convenience of expression, and should not be construed as limiting the embodiments of the present utility model, and the following embodiments are not described one by one.
The terms of direction and position in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., refer only to the direction or position of the drawing. Accordingly, directional and positional terms are used to illustrate and understand the utility model and are not intended to limit the scope of the utility model.
As shown in fig. 1 to 4, in the embodiment of the utility model, a program control valve comprises a valve body 1, a valve cover 2, an actuating mechanism 3, a valve rod 4 and a valve core 5, wherein the valve body 1 and the valve cover 2 are connected to form a medium cavity, the actuating mechanism 3 is connected outside the valve cover 2, one end of the valve rod 4 penetrates through the valve cover 2 and stretches into the medium cavity to be connected with the valve core 5, and the other end is connected with the actuating mechanism 3;
The actuating mechanism 3 comprises a cylinder 30 fixedly connected with the valve cover 2 and a piston 31 arranged in the cylinder and slidably connected with the cylinder, and the valve rod 4 extends into the cylinder to be in linkage fit connection with the piston 31;
It can be understood that the cylinder 30 drives the piston 31 to reciprocate up and down, the piston 31 drives the valve rod 4 to reciprocate in the valve cover 2, and the valve rod 4 drives the valve core 5 to reciprocate up and down, so that the valve core 5 is opened and closed. The valve cover 2 separates the cylinder 30 from the valve body 1 to avoid medium from entering the cylinder 30 to cause medium mixing.
The outer periphery of the piston 31 is fixedly connected with a first sealing ring 311 and a second sealing ring 312 which are arranged up and down, the outer periphery of the first sealing ring 311 is provided with a first conical surface 3111 in interference fit with the inner wall of the cylinder body 34 of the cylinder 30, the outer periphery of the second sealing ring 312 is provided with a second conical surface 3121 in interference fit with the inner wall of the cylinder body 34 of the cylinder 30, and the inclination direction of the first conical surface 3111 is opposite to that of the second conical surface 3121. It will be appreciated that the maximum outer diameter of the first conical surface 3111 is larger than the inner diameter of the inner wall of the cylinder 34, and the first conical surface 3111 and the second conical surface 3121 form interference fit with the inner wall of the cylinder 34 of the cylinder 30, so that the problem that the piston 31 is blocked in the cylinder 30 during frequent up-and-down movement is avoided, and the service life of the piston 31 is prolonged.
The first conical surface 3111 is a conical surface with an upper size, and the second conical surface 3121 is a conical surface with a lower size and an upper size.
The upper end of the first sealing ring 311 is provided with a first protruding ring 3112, the lower end of the second sealing ring 312 is provided with a second protruding ring 3122, and the peripheries of the first protruding ring 3112 and the second protruding ring 3122 are respectively located on the extension surfaces of the first conical surface 3111 and the second conical surface 3121.
It will be appreciated that the first and second collars 3112 and 3122 increase the contact area of the first and second seal rings 311 and 312 with the inner wall of the cylinder body 34 of the cylinder 30, while the first and second collars 3112 and 3122 are more deformable than the first and second seal rings 312 and 312, enhancing the interference fit formed by the first and second seal rings 311 and 312 with the inner wall of the cylinder body 34 of the cylinder 30.
It will be appreciated that the packing 21 acts to prevent leakage of medium outwardly from the valve stem 4, and that the sleeve 22 enhances the level of protection against leakage of gas and liquid.
The outer circumferences of the upper end and the lower end of the piston 31 are respectively provided with a first mounting groove 315 and a second mounting groove 316, and the first sealing ring 311 and the second sealing ring 312 are respectively embedded in the first mounting groove 315 and the second mounting groove 316.
The piston 31, the first sealing ring 311 and the second sealing ring 312 are fixedly connected through bolts 32, and the bolts 32 sequentially penetrate through the first sealing ring 311, the piston 31 and the second sealing ring 312. Through the arrangement, the piston 31, the first sealing ring 311 and the second sealing ring 312 are fixedly connected through barrel bolts easily, and the installation process is simple.
The valve cover 2 is internally provided with a shaft sleeve 22 sleeved outside the valve rod 4, a packing cavity is formed between the shaft sleeve 22 and the valve rod 4, the packing 21 is filled in the packing cavity, and the inner side and the outer side of the shaft sleeve 22 are provided with a plurality of sealing rings. It can be understood that the packing 21 plays a role in preventing the medium from leaking outwards due to the movement of the valve rod 4, the shaft sleeve 22 and the sealing ring arranged in the shaft sleeve 22 strengthen the level of preventing the leakage of gas and liquid, and the problem of the eccentricity of the valve seat 11 caused by the different axes of the valve cover 2 and the valve seat 11 can be solved by adopting the cambered surface at the contact surface of the limiting block 41 and the valve core 5.
The sealing rings include third sealing rings 313 provided at left and right sides in the sleeve 22 and fourth sealing rings 314 provided close to the outer side of the sleeve.
The lower end of the valve rod 4 is connected with the upper end of the valve core 5 in a cambered surface floating mode. The cambered surface is connected to the lower end of the valve rod 4 and the upper end of the valve core 5 in a cambered surface contact manner, the contact manner is various, the lower end of the valve rod 4 can be a cambered surface 41, the upper end of the valve core 5 is a plane, or the lower end of the valve rod 4 is a plane, the upper end of the valve core 5 is a cambered surface 41, or the lower end of the valve rod 4 and the upper end of the valve core 5 are cambered surfaces 41, in the embodiment, the lower end of the valve rod 4 is preferably a cambered surface 41, the upper end of the valve core 5 is a plane, and the valve rod 4 and the valve core 5 are not completely fixed. The floating connection mode of the through cambered surface can automatically eliminate the problem of eccentric valve seat 11 caused by different axes of valve cover 2 and valve seat 11.
The valve core 5 comprises a fixed plate 51, a lower pressure plate 52 and a fifth sealing ring 317, a fixed groove 54 for placing and adapting the fifth sealing ring 317 is arranged on the fixed plate 51, the fifth sealing ring 317 is arranged in the fixed groove 54, a valve seat 11 is arranged on the valve body 1 corresponding to the lower position of the fifth sealing ring 317, a limit recess 55 is arranged on the fifth sealing ring 317, and the lower pressure plate 52 and the limit recess 55 are adapted to form a limit abutting action on the fifth sealing ring 317;
It can be appreciated that the fifth sealing ring 317 cooperates with the lower pressing plate 52 to fix the position of the fifth sealing ring 317 in the valve core 5, and meanwhile, the fifth sealing ring 317 abuts against the valve seat 11, and the valve core 5 reciprocates up and down to enable the fifth sealing ring 317 to abut against or separate from the valve seat 11 to open and close the valve core 5.
A sixth sealing ring 318 is arranged on the outer periphery of the fifth sealing ring 317 near the valve rod 4, the fifth sealing ring 317 and the sixth sealing ring 318 form interference fit, and the lower end of the sixth sealing ring 318 is connected with the upper end of the lower pressure plate 52.
It can be appreciated that when the valve rod 4 drives the valve core 5 to reciprocate up and down, the pressing of the fifth sealing ring 317 against the valve seat 11 causes the fifth sealing ring 317 to deform easily, and the sixth sealing ring 318 compensates the pressure of the fifth sealing ring 317 to reduce the deformation loss of the fifth sealing ring 317 when the valve rod 4 drives the valve core 5 to reciprocate up and down.
The program control valve comprises a long bolt 36, the air cylinder 30 is sequentially provided with an upper end cover 33, a cylinder body 34 and a lower end cover 35, and the long bolt 36 sequentially penetrates through the upper end cover 33, the cylinder body 34 and the lower end cover 35.
The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421862396.6U CN223105297U (en) | 2024-08-02 | 2024-08-02 | A program-controlled valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421862396.6U CN223105297U (en) | 2024-08-02 | 2024-08-02 | A program-controlled valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223105297U true CN223105297U (en) | 2025-07-15 |
Family
ID=96309646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421862396.6U Active CN223105297U (en) | 2024-08-02 | 2024-08-02 | A program-controlled valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223105297U (en) |
-
2024
- 2024-08-02 CN CN202421862396.6U patent/CN223105297U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |