CN218954120U - Stop check valve - Google Patents

Abstract

The utility model discloses a stop check valve, which comprises a valve body and a valve bonnet, wherein a valve core and a valve rod are arranged in the valve bonnet, the valve rod is used for driving the valve core, the stop check valve further comprises a lock opening cap, the lock opening cap is in rotary connection with the valve bonnet, the lock opening cap and the valve bonnet are provided with accommodating grooves, the positions of the accommodating grooves correspond to each other, a movable magnetic block is arranged in the accommodating grooves, the movable magnetic block is in sliding connection with the accommodating grooves, one end of the movable magnetic block is positioned in the accommodating grooves of the lock opening cap, the other end of the movable magnetic block is positioned in the accommodating grooves of the valve bonnet, a fixed magnetic block fixedly connected with the valve bonnet is arranged in the accommodating grooves of the valve bonnet, the fixed magnetic block and the movable magnetic block are mutually adsorbed, the whole fixed magnetic block is positioned in the accommodating grooves on the valve bonnet, and the length of the movable magnetic block is smaller than or equal to the length of the accommodating grooves of the lock opening cap, and the lock opening cap is in circumferential linkage with the valve rod. The lock opening cap can be rotated to adjust the position of the stop valve sleeve after the moving magnetic block is sucked up by a specific key, so that the switching of the stop and check functions is realized, and the situation of misadjustment of people who do not know the situation is reduced.

Description

Stop check valve

Technical Field

The utility model relates to the field of valves, in particular to a stop check valve.

Background

The stop valve is a common valve, the friction force of a sealing surface in the opening and closing process is small, so the valve is durable, the applicable pressure range is large, the valve can be applied to various occasions, but when in actual use, the medium of a plurality of devices can have a backflow phenomenon, the stop valve cannot prevent the medium from flowing backwards, and a check valve is often required to be added to prevent the medium from flowing backwards.

CN202646807U discloses a stop check valve, will cut off function and the integrative setting of check function, can realize cutting off and the check function through a valve, and the upper end of valve rod exposes outside the valve body, can adjust its state, and this kind of setting is convenient, but anybody can all rotate the valve easily and adjust, does not know the personnel of operating mode and erroneously adjusts and form the influence to manufacturing easily, constitutes the potential safety hazard even.

Disclosure of Invention

In order to solve the problem that anybody can easily rotate the valve to adjust, the production and the manufacturing are easily influenced by misadjustment of personnel without knowing working conditions, and even potential safety hazards are formed, the application provides a stop check valve, and the specific scheme is as follows.

The utility model provides a stop check valve, includes valve body, valve bonnet, be equipped with case and valve rod in the valve bonnet, the valve rod is used for driving the case, still includes the lock and opens the cap, the lock is opened the cap and is rotated with the valve bonnet and be connected, the lock is opened all to open the position correspondence that has holding tank and holding tank on cap and the valve bonnet, be equipped with the removal magnetic path in the holding tank, remove magnetic path and holding tank sliding connection, it is located the holding tank that the cap was opened to the lock to remove magnetic path one end, and the other end is located the holding tank of valve bonnet, be equipped with the fixed magnetic path with valve bonnet fixed connection in the holding tank of valve bonnet, fixed magnetic path adsorbs each other with the removal magnetic path, the whole holding tank that is in on the valve bonnet is inside, the length of holding tank that the cap was opened to the lock is less than or equal to, lock is opened cap and valve rod circumference linkage.

Through adopting above-mentioned technical scheme, set up the removal magnetic path between lock open cap and the valve cap, both ends when the removal magnetic path are located both holding tank respectively, the removal magnetic path can restrict the rotation of lock open cap, can't rotate lock open cap this moment, use the key of taking magnetism to inhale the removal magnetic path completely to lock open cap's holding tank in, the removal magnetic path no longer restricts the rotation of lock open cap, thereby can rotate lock open cap and adjust, can only use the key that has magnetism just can adjust, personnel's wrong condition has been reduced, still be equipped with fixed magnetic path in the holding tank of valve cap, some installation conditions have been reduced because of the whole circumstances that drops to lock open cap of gravity influence in, improved the suitability, and because magnet adsorbs, need use the stronger key of more specific magnetism, further reduce personnel's wrong condition.

Optionally, be equipped with the jump ring between valve cap and the lock open cap, the valve cap outer wall is opened there is the draw-in groove, lock open cap inner wall is opened there is the joint annular that corresponds with the draw-in groove, in the embedding draw-in groove of jump ring one side, the opposite side embedding joint annular.

Through adopting above-mentioned technical scheme, jump ring both ends embedding draw-in groove and joint annular, the jump ring is not dismantled after the installation, can restrict the lock and open the cap and break away from the valve cap, and the valve cap does not influence the lock and open the rotation of cap on the valve cap for the lock is opened the cap and is rotated with the valve cap and is connected, also can reduce the lock through the jump ring connection and open the gap between cap and the valve cap.

Optionally, be equipped with the stop valve cover on the valve rod, the valve rod is the lead screw, lead screw and stop valve cover threaded connection, stop valve cover and the vertical sliding connection of valve cap, stop valve cover is along the vertical removal of lead screw, be equipped with the current-limiting plate in the valve body, it has the limbers to open on the current-limiting plate, the case is including the sealing head that is used for shutoff limbers, stop valve cover is used for driving the sealed limbers of sealing head.

Through adopting above-mentioned technical scheme, the valve rod includes the stop valve cover, and the stop valve cover passes through the lead screw regulation and control, can rotate the lead screw through rotating the lock and open the cap, under the circumstances that the lock is opened the cap and can not vertical movement for the stop valve cover is along the vertical removal of lead screw, thereby can adjust the shutoff state of valve rod.

Optionally, the one end that the lead screw is close to the lock and opens the cap is equipped with the flat head that stretches out the valve cap, open on the lock and open the cap and have the grafting groove that corresponds flat head, flat head grafting is in the grafting inslot, lock and open the cap rotation and drive the lead screw rotation.

Through adopting above-mentioned technical scheme, can make lead screw and lock open the cap turnover linkage through the mode of flat head, because lead screw itself is the cylinder, the head of cylinder is convenient for process into the style of flat head, has reduced manufacturing cost.

Optionally, the stop valve sleeve is a hexagonal connecting cylinder, an inner hexagonal block is arranged on the inner side of the valve cap corresponding to the hexagonal connecting cylinder, and the inner hexagonal block and the valve cap are integrally arranged.

By adopting the technical scheme, the screw rod is rotated to adjust the movement of the stop valve sleeve, the stop valve sleeve is required to be limited to rotate, the inner hexagonal block and the hexagonal connecting cylinder are matched to limit the rotation of the stop valve sleeve, the adjusting efficiency is improved, and the inner hexagonal block and the hexagonal connecting cylinder are common parts, so that the production cost can be reduced.

Optionally, the one end that the sealing head is close to the lead screw is equipped with the check valve rod, the center that the lead screw is close to the one end of sealing head is opened there is the sliding tray, check valve rod is along sliding tray and lead screw sliding connection, be equipped with between sealing head and the valve cap with two fixed connection's elastic component, the elastic component drives sealing head shutoff water hole.

Through adopting above-mentioned technical scheme, be equipped with the elastic component between sealing head and the valve cap, when the medium promotes the sealing head of shutoff pipeline, promote the vertical removal of case in the sliding tray, and the elastic component then can provide the thrust, then can remove the shutoff when the thrust that the medium formed is greater than the thrust of elastic component, then can push back the sealing head again and block up when the medium is backward, realized the non return function, and the sliding tray sets up inside the lead screw, can save the arrangement space.

Optionally, the lead screw is close to and is opened and open a plurality of annular on the one end of cap, is equipped with the sealing washer in the annular, the sealing washer supports the edge and the inner wall of valve cap of tight annular.

By adopting the technical scheme, as a certain gap is necessarily formed in the thread on the screw rod, the medium is easy to overflow from the gap, the ring groove is formed and the sealing ring is arranged for blocking, so that the leakage of the medium from the gap piece of the locking cap and the valve cap can be reduced.

Optionally, a silica gel gasket for plugging is arranged on one surface, close to the valve body, of the sealing head, and the silica gel gasket is fixedly connected with the sealing head.

Through adopting above-mentioned technical scheme, the silica gel gasket is soft sealed form, and the silica gel gasket is more inseparable because its soft nature, and the laminating is better during the shutoff, and silica gel gasket manufacturing cost is lower, has reduced manufacturing cost.

Optionally, the sealing head comprises a stainless steel block or a copper block, an inclined plane is circumferentially arranged on the sealing head, and the inclined plane abuts against the edge of the water through hole.

By adopting the technical scheme, as the high-pressure high-temperature condition exists in production and manufacture, and the medium possibly has strong corrosiveness, the leakage condition can be reduced by adopting the stainless steel block and the copper block, and the periphery of the sealing head is provided with the inclined plane, so that the fitting degree of the sealing head during plugging can be improved, and the sealing performance is further improved.

Optionally, a plurality of positioning grooves for abutting against the key are circumferentially arranged on the lock opening cap.

Through adopting above-mentioned technical scheme, through setting up the constant head tank for when using the key, peg graft the key in the constant head tank, rotate the key and can drive the lock and open the cap and rotate, improve adjustment efficiency.

In summary, the present application has at least the following beneficial effects:

1. the valve can be adjusted easily by anyone, the production and manufacturing are affected easily by misadjustment of personnel without knowing working conditions, and even the problem of potential safety hazard is solved, the lock opening cap is limited to rotate by the movable magnetic block, the movable magnetic block can be attracted to a certain position by the magnetic key, the lock opening cap is not limited to rotate any more, the lock opening cap is linked with the screw rod for adjustment, the valve is adjusted, and the special key is needed in the adjustment mode, so that the misadjustment of personnel is reduced.

2. The sealing head and the valve cap of the sealing valve are connected by the elastic piece, the sealing head can be pushed to enable media to circulate when the pressure of media is larger than the elastic force of the elastic piece, the sealing head cannot be pushed in the reverse direction, and therefore the non-return function is achieved.

Drawings

Fig. 1 is a perspective view of a first embodiment.

Fig. 2 is a cross-sectional view of the first embodiment.

Fig. 3 is a perspective view of a bonnet in a first embodiment.

Fig. 4 is a cross-sectional view of the second embodiment.

Reference numerals illustrate:

1. a valve body; 11. an inflow port; 12. an outflow port; 13. a flow-limiting plate; 131. a water through hole;

2. a valve cap; 21. a check valve rod; 211. a sealing head; 212. a silica gel pad; 213. an inclined plane; 22. a hexagonal connecting cylinder; 23. a screw rod; 231. a sliding groove; 232. a flat head; 233. a ring groove; 234. a seal ring; 24. an inner hexagonal block; 25. a spring; 26. a clamping groove; 27. a receiving groove; 28. fixing the magnetic block;

3. locking and unlocking the cap; 31. the clamping ring groove is connected; 32. a plug-in groove; 33. a positioning groove;

4. clamping springs; 5. moving the magnetic block; 6. slit groove.

Detailed Description

The present application is further described in detail below with reference to fig. 1-4 by way of specific examples.

Example 1

A stop check valve is shown in fig. 1 and 2, and comprises a valve body 1, a valve cap 2, a valve core and a valve rod are arranged in the valve cap 2, the valve cap 2 is fixedly connected with the valve body 1, an inflow port 11 and an outflow port 12 are formed in two ends of the valve body 1, the valve cap 2 is arranged in the middle of the side wall of the valve body 1, a flow limiting plate 13 is arranged in the valve body 1, the inner space of the valve cap 2 is divided into two independent spaces by the flow limiting plate 13, the inner space of the valve cap 2 is communicated with the inner space of the valve body 1 on one side close to the outflow port 12, the flow limiting plate 13 is in a bent shape, a water through hole 131 is formed in the flow limiting plate 13, the position of the water through hole 131 corresponding to the valve cap 2 is arranged, and the valve rod in the valve core is used for blocking the water through hole 131.

As shown in fig. 2, the valve rod is the lead screw 23, the case includes check valve rod 21, stop valve sleeve, the lead screw 23 runs through valve cap 2 setting, stop valve sleeve is in lead screw 23 one end that is close to restrictor plate 13 and lead screw 23 threaded connection, stop valve sleeve is hexagonal connecting cylinder 22, valve cap 2 is close to valve body 1's one end and is equipped with the interior hexagonal block 24 that restricts its pivoted corresponding hexagonal connecting cylinder 22, interior hexagonal block 24 and valve cap 2 fixed connection, because interior hexagonal block 24 has restricted hexagonal connecting cylinder 22's rotation, consequently, rotate lead screw 23 and only enable hexagonal connecting cylinder 22 along lead screw 23 vertical movement, lead screw 23 penetrates the one end of valve body 1 and opens and have sliding groove 231, check valve rod 21 and sliding groove 231 sliding connection, check valve rod 21 embeds in lead screw 23 inside, check valve rod 21 is close to the one end of water hole 131 and is equipped with seal head 211, be equipped with the elastic component between interior hexagonal block 24 and the seal head 211, the elastic component is spring 25, spring 25 one end and interior hexagonal block 24 fixed connection, the other end and seal head 211 fixed connection, spring 25 promotes seal 211 towards water hole 131 direction removal, consequently, the one end that is close to seal head 211 is close to water hole 131 has slide groove 212 to seal head 212, can be pressed the sealing head 212 and then the sealing head 21 is closed to the sealing head 21 along the sealing medium along the sealing head 131, can be realized the sealing gasket is pressed along the sealing medium edge when the sealing head is pressed along the groove 212, the sealing head is closed to the sealing head is pressed along the sealing head hole 131, the sealing head is closed to the sealing head is pressed the sealing plate to the sealing plate's of the edge to the sealing pad's 11, can be pressed the edge is closed by the sealing pad to the sealing pad is pressed and the sealing pad to the sealing pad is pressed. When the adjusting screw 23 makes the hexagonal connecting cylinder 22 abut against the sealing head 211, the sealing head 211 can not squeeze the spring 25 to deform any more because the hexagonal connecting cylinder 22 cannot move vertically, so that the state of blocking the water through hole 131 is maintained, and the blocking effect is realized.

As shown in fig. 2 and 3, still include lock open cap 3, lock open cap 3 rotates with valve cap 2 to be connected, be equipped with jump ring 4 between valve cap 2 and the lock open cap 3, the one end circumference that valve cap 2 is close to lock open cap 3 is opened there is draw-in groove 26, lock open cap 3 corresponds draw-in groove 26 and is equipped with joint annular 31, jump ring 4 is cyclic annular, jump ring 4 one side embedding draw-in groove 26, the opposite side embedding joint annular 31, thereby the vertical removal of lock open cap 3 has been restricted, and jump ring 4 does not influence the rotation of lock open cap 3, the rotation connection of lock open cap 3 and valve cap 2 has been realized, lock open cap 3 is connected with valve cap 2 through jump ring 4 rotates the back, because lock open cap 3 can't outwards pull open, jump ring 4 restricts the vertical removal of lock open cap 3 all the time and can't dismantle, further improve the stability of connection, in the concrete implementation, jump ring 4 adopts the stainless steel ring, corrosion-resistant and intensity is high, further improve connection stability.

As shown in fig. 2 and 3, the screw rod 23 penetrates through the valve cap 2 and is a flat head 232 far away from the valve body 1, the lock opening cap 3 is provided with a plug groove 32, the flat head 232 at the end part of the screw rod 23 penetrates through the valve cap 2 and is plugged into the plug groove 32, the lock opening cap 3 and the screw rod 23 are in turnover linkage, three containing grooves 27 are circumferentially spaced on one end surface of the valve cap 2, which is close to the lock opening cap 3, the containing grooves 27 are also formed in the position of the lock opening cap 3, which corresponds to the containing grooves 27 of the valve cap 2, the containing grooves 27 are communicated to form a storage space, a fixed magnetic block 28 and a movable magnetic block 5 are arranged in the storage space, the fixed magnetic block 28 is fixedly connected with the containing grooves 27 of the valve cap 2 and the lock opening cap 3 in a sliding manner, one end of the movable magnetic block 5 is positioned in the containing groove 27 of the lock opening cap 3 during adsorption, the other end of the movable magnetic block 5 is positioned in the containing groove 27 of the lock opening cap 2, so that the rotation of the lock opening cap 3 is limited, the movable magnetic block 5 can be more tightly moved to the lock opening cap 3 through the length of the movable magnetic block 5, and the movable magnetic block 5 can be more tightly moved to the lock opening cap 3 by the length of the movable magnetic block 3.

As shown in fig. 2, the part of the screw rod 23, which is close to the lock opening cap 3 and is located inside the bonnet 2, is provided with three ring grooves 233, sealing rings 234 are arranged in the ring grooves 233, and the sealing rings 234 are abutted against the screw rod 23 at the edge of the ring grooves 233 and the inner wall of the bonnet 2, and as the screw rod 23 is provided with threads, when a medium flows into the bonnet 2, the medium easily leaks out through the gaps of the threads of the screw rod 23, and the leakage of the medium from the bonnet 2 can be reduced through the sealing rings 234, and in a specific implementation, the joint of the bonnet 2 and the lock opening cap 3 is provided with a gap groove 6, and the gap groove 6 is filled with the sealing rings 234, so that the medium overflow is further reduced.

As shown in fig. 1, a plurality of positioning grooves 33 for abutting against keys are circumferentially arranged on the upper end surface of the lock opening cap 3, and when the lock opening cap is in specific implementation, a key with a bump arranged at the position corresponding to the positioning groove 33 of the lock opening cap 3 can be used as a special key for the lock opening cap 3, the key can be inserted into the positioning groove 33 through the bump to realize positioning, and the lock opening cap 3 can be driven to rotate by rotating the key, so that the adjustment efficiency is improved.

Working principle: install valve body 1 in the middle of the pipeline, the medium gets into valve body 1 from inflow 11, when the medium flow is enough, and the pressure of formation is greater than the thrust of spring 25, seal head 211 is jacked, the medium flows out from outflow 12 through water hole 131, when the medium appears flowing backwards the condition, then can promote seal head 211 shutoff water hole 131 again to realize the non return effect, will remove magnetic path 5 through special key and inhale, rotate and open cap 3 and adjust hexagonal connecting cylinder 22 and press close head 211, thereby restrict the removal of seal head 211, make seal head 211 shutoff water hole 131 all the time, thereby realize the shutoff effect.

Example two

As shown in fig. 4, the main difference between the second embodiment and the first embodiment is that the sealing head 211 comprises a stainless steel block or a copper block, the sealing head 211 is circumferentially provided with an inclined surface 213, the sealing head 211 is inserted into the water through hole 131 of the flow limiting plate 13, the inclined surface 213 of the sealing head 211 abuts against the flow limiting plate 13 at the edge of the water through hole 131, and the sealing effect on the water through hole 131 is achieved.

Working principle: because the silica gel gasket 212 used for soft sealing is not suitable for high-temperature and high-pressure working environments, cannot be used for working conditions with corrosive media, and is easy to leak, the stainless steel block and the copper block are made of materials which are difficult to react, and can have better plugging effect when facing special working conditions.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The utility model provides a stop check valve, includes valve body (1), valve bonnet (2), be equipped with case and valve rod in valve bonnet (2), the valve rod is used for driving the case, its characterized in that: still including lock open cap (3), lock open cap (3) and valve cap (2) rotate and are connected, lock open cap (3) and valve cap (2) are gone up and all are opened the position correspondence that has holding tank (27) and holding tank (27), be equipped with in holding tank (27) and remove magnetic path (5), remove magnetic path (5) and holding tank (27) sliding connection, remove magnetic path (5) one end and be located lock open cap (3) holding tank (27), the other end is located valve cap (2) holding tank (27), be equipped with in valve cap (2) holding tank (27) with valve cap (2) fixed magnet (28), fixed magnet (28) and remove magnetic path (5) adsorb each other, fixed magnet (28) are whole to be in inside holding tank (27) on valve cap (2), remove magnetic path (5) length less than or equal to lock open cap (3) holding tank (27), lock open cap (3) and valve rod circumference linkage.

2. A stop check valve according to claim 1, wherein: the novel lock is characterized in that a clamp spring (4) is arranged between the valve cap (2) and the lock opening cap (3), a clamping groove (26) is formed in the outer wall of the valve cap (2), a clamping ring groove (31) corresponding to the clamping groove (26) is formed in the inner wall of the lock opening cap (3), one side of the clamp spring (4) is embedded into the clamping groove (26), and the other side of the clamp spring is embedded into the clamping ring groove (31).

3. A stop check valve according to claim 1, wherein: be equipped with the stop valve barrel on the valve rod, the valve rod is lead screw (23), lead screw (23) and stop valve barrel threaded connection, stop valve barrel and vertical sliding connection of valve cap (2), stop valve barrel is along the vertical removal of lead screw (23), be equipped with current limiting plate (13) in the valve body, it has water hole (131) to open on current limiting plate (13), the case is including sealing head (211) that are used for shutoff water hole (131), stop valve barrel is used for driving sealing head (211) sealed water hole (131).

4. A stop check valve according to claim 3, wherein: the screw rod (23) is close to the one end that locks and opens cap (3) and be equipped with flat head (232) that stretches out valve cap (2), it has grafting groove (32) that correspond flat head (232) to open on the cap (3) to lock, flat head (232) are pegged graft in grafting groove (32), lock and open cap (3) rotation drive screw rod (23) rotation.

5. A stop check valve according to claim 3, wherein: the valve cap is characterized in that the valve cap is a hexagonal connecting cylinder (22), an inner hexagonal block (24) is arranged on the inner side of the valve cap (2) corresponding to the hexagonal connecting cylinder (22), and the inner hexagonal block (24) is fixedly connected with the valve cap (2).

6. A stop check valve according to claim 3, wherein: the sealing head (211) is close to one end of the screw rod (23) and is provided with a check valve rod (21), a sliding groove (231) is formed in the center of one end, close to the sealing head (211), of the screw rod (23), the check valve rod (21) is connected with the screw rod (23) in a sliding mode along the sliding groove (231), an elastic piece fixedly connected with the sealing head (211) and the valve cap (2) is arranged between the sealing head (211) and the valve cap (2), and the elastic piece drives the sealing head (211) to seal the water through hole (131).

7. A stop check valve according to claim 3, wherein: one end of the screw rod (23) close to the lock opening cap (3) is provided with a plurality of ring grooves (233), sealing rings (234) are arranged in the ring grooves (233), and the sealing rings (234) are abutted against the edges of the ring grooves (233) and the inner wall of the valve cap (2).

8. A stop and check valve according to claim 6, wherein: a silica gel gasket (212) for blocking is arranged on one surface, close to the valve body (1), of the sealing head (211), and the silica gel gasket (212) is fixedly connected with the sealing head (211).

9. A stop and check valve according to claim 6, wherein: the sealing head (211) comprises a stainless steel block or a copper block, an inclined surface (213) is circumferentially arranged on the sealing head (211), and the inclined surface (213) abuts against the edge of the water through hole (131).

10. A stop check valve according to claim 1, wherein: a plurality of positioning grooves (33) for abutting against a key are circumferentially arranged on the lock opening cap (3).

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