CN216479108U - Anti-blocking butt-clamping lifting check valve - Google Patents

Abstract

The utility model belongs to the technical field of valves, in particular to an anti-blocking butt-clamping lifting check valve, which comprises a valve body, wherein a valve cover is connected onto the valve body, a water outlet is formed on the valve cover, a water inlet is formed in the valve body, a valve clack capable of moving relative to the valve cover is arranged in the valve body, the valve clack can be blocked at the water inlet, a spring supported between the valve cover and the valve clack is arranged in the valve body, the spring enables the valve clack to have the tendency of blocking the water inlet, a stop block is formed in the valve cover, a jack is formed in the stop block, a valve rod inserted into the jack is formed in the valve clack, a convex ring surrounding the jack is formed on the end surface of the stop block facing the outside of the valve body, the convex ring inclines downwards from the jack, and the check valve can prevent residual impurities from blocking the movement of the valve clack when a medium flows through, thereby effectively preventing the blocking phenomenon from occurring.

Description

Anti-blocking butt-clamping lifting check valve

Technical Field

The utility model belongs to the technical field of valves, and relates to an anti-blocking butt-clamping lifting check valve.

Background

The butt-clamping lifting check valve is a valve which only allows the medium to flow in one direction and prevents the medium from flowing in the ring direction. The valve clack is opened under the action of pressure generated when the medium flows in the positive direction, so that the medium flows through; the pressure and the dead weight generated when the medium flows reversely are pressed on the inner end of the valve body, thereby cutting off the flow of the medium. The existing butt-clamping lifting check valve can be provided with a through hole for inserting a valve rod on the valve clack on a valve cover in order to ensure that the valve clack can move stably, so that the guide effect on the movement of the valve clack is achieved.

However, after the medium flows through the check valve for a long time, the impurity particles in the medium, such as silt and rust, may be attached to the check valve, wherein the impurities attached to the valve cover may enter and attach to the through hole along the surface thereof, and at this time, the valve rod on the valve flap may rub the impurities in the through hole when moving along the through hole, and the impurities may generate corresponding resistance to the valve rod during the movement process thereof, i.e., the medium may be difficult to push the valve flap when flowing through the check valve, thereby causing a blocking phenomenon.

Disclosure of Invention

In view of the above problems, the present invention provides an anti-clogging butt-clamping lift check valve which prevents clogging by a structure that allows the valve flap and the valve stem to move more smoothly.

The purpose of the utility model is realized as follows:

the utility model provides a prevent dual-clip over-and-under type check valve of jam, includes the valve body, is connected with the valve gap on the valve body, is formed with the delivery port on the valve gap, be equipped with relatively the valve clack that the valve gap removed, the valve clack can keep off in the water inlet, be equipped with in the valve body support in spring between valve gap and the valve clack, the spring makes the valve clack has blocks the trend of water inlet, be formed with the dog in the valve gap, be formed with the jack in the dog, be formed with on the valve clack and insert valve rod in the jack, the valve rod is followed all the time outwards stretch out in the jack, the dog orientation be formed with on the terminal surface outside the valve body and center on the bulge loop of jack, the bulge loop is followed jack department downward sloping.

Further, the surface of the convex ring is an inclined plane.

Furthermore, a gap is reserved between the inner wall of the jack and the valve rod.

Furthermore, at least two shunting blocks are formed between the inner wall of the valve cover and the stop block, and the water outlet is limited between the shunting blocks.

Further, the valve cover is connected with the valve body through threads.

Furthermore, a supporting block is formed at one end of the check block facing into the valve body, the insertion hole penetrates through the check block and the supporting block, and the valve rod penetrates through the supporting block and is inserted into the check block.

Furthermore, the spring is sleeved outside the supporting block and abuts against the stop block.

Furthermore, a limiting block is formed at one end of the valve clack facing into the valve body, and the spring is sleeved outside the limiting block and abuts against the valve clack.

Furthermore, one end of the valve clack facing the outside of the valve body is connected with a sealing sheet.

Furthermore, a chamfer is formed at one end of the valve rod, which extends out of the valve body.

Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:

after the medium flows through the check valve, impurities remained in the medium at the valve cover stop block can slide along the convex ring, the impurities are prevented from sliding towards the inner side of the jack, the valve rod is prevented from being blocked by the impurities when moving along the jack, and the valve clack can be smoothly pushed by the medium, so that the stable work of the check valve is ensured, and the anti-blocking effect is effectively achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is a perspective view of the present invention.

1-valve body, 11-water inlet, 2-valve cover, 21-water outlet, 22-stop block, 221-jack, 222-convex ring, 223-supporting block, 23-shunting block, 3-valve clack, 31-valve rod, 32-limiting block, 4-spring and 5-sealing sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The utility model will be further described in the following with reference to specific embodiments thereof,

as shown in fig. 1-2, an anti-clogging butt-clamping lift check valve comprises a valve body 1, a valve cover 2 connected to the valve body 1, a water outlet 21 formed on the valve cover 2, a water inlet 11 formed in the valve body 1, and is provided with a valve clack 3 which can move relative to the valve cover 2, the valve clack 3 can block the water inlet 11, a spring 4 which is propped between the valve cover 2 and the valve clack 3 is arranged in the valve body 1, the spring 4 enables the valve clack 3 to have the tendency of blocking the water inlet 11, it is characterized in that a stop block 22 is formed in the valve cover 2, an insertion hole 221 is formed in the stop block 22, the valve rod 31 inserted into the insertion hole 221 is formed on the valve flap 3, the valve rod 31 always extends out from the insertion hole 221, the end surface of the stopper 22 facing the outside of the valve body 1 is formed with a collar 222 surrounding the insertion hole 221, and the collar 222 is inclined downward from the insertion hole 221. Specifically, the working principle of the check valve is that when a medium flows through the check valve and pushes the valve flap 3, the medium flows into the valve body 1 from the opened water inlet 11 and flows out from the water outlet 21 by pushing the valve flap 3 open, and at this time, the spring 4 is compressed in the process of pushing the valve flap 3; when the flow of the medium is reduced, the valve clack 3 is pushed by the medium from the outside of the valve body 1 to be smaller than the valve clack 3 is pushed by the spring 4, the spring 4 begins to rebound, the valve clack 3 is pushed to block the water inlet 11 again, and the medium stops flowing through the check valve. The media easily leave impurities attached to the valve cover 2 when flowing through the check valve, such as silt and rust, and when the media wash the check valve again, the impurities on the stopper 22 can slide along the direction of the convex ring 222 away from the insertion hole 221, and the valve rod 31 always extending outwards can also block the impurities from entering the insertion hole 221, so that the valve rod 31 is prevented from rubbing with the impurities in the insertion hole 221 when moving along with the valve flap 3, the smoothness of the valve flap 3 when opening and blocking the water inlet 11 is ensured, and the check valve effectively plays a role in preventing blockage.

As a modified example, the surface of the convex ring 222 is a plane inclined. In particular, the collar 222, which is planar in surface, allows media and impurities to slide along it more quickly away from the receptacle 221.

As a modified example, a gap is left between the inner wall of the insertion hole 221 and the valve rod 31. Specifically, the clearance between the insertion hole 221 and the valve rod 31 can reduce abrasion between the valve rod 31 and the inner wall of the insertion hole 221 during movement, and make the movement of the valve rod 31 smoother.

As a modified embodiment, at least two diversion blocks 23 are formed between the inner wall of the valve cover 2 and the stop 22, and the diversion blocks 23 define the water outlet 21 therebetween. Specifically, the diversion block 23 can disperse the concentrated medium when the medium flows out of the water outlet 21, so as to reduce the pressure of the medium flowing out of the water outlet 21.

As a modified embodiment, the valve cover 2 is connected with the valve body 1 through threads. Specifically, threaded connection makes valve gap 2 can be demolishd relatively valve body 1, can be convenient for dismantle clearance and maintenance to this check valve after long-term the use.

As a modified example, a supporting block 223 is formed on an end of the stopper 22 facing into the valve body 1, the insertion hole 221 penetrates through the stopper 22 and the supporting block 223, and the valve rod 31 penetrates through the supporting block 223 and is inserted into the stopper 22. Specifically, the supporting block 223 extends the passage length of the insertion hole 221, so that the valve rod 31 can move along the insertion hole 221 with the valve flap 3 more stably.

As a modified embodiment, the spring 4 is sleeved outside the supporting block 223 and abuts against the stopper 222. Specifically, the supporting block 223 can support the inner ring of the spring 4, so as to prevent the spring 4 from tilting and shaking in the expansion process.

As a modified embodiment, a limiting block 32 is formed on one end of the valve clack 3 facing the interior of the valve body 1, and the spring 4 is sleeved outside the limiting block 32 and is abutted against the valve clack. Specifically, the limiting block 32 can play a limiting supporting role for one end of the spring 4 close to the valve clack 3, and further avoids the spring 4 from shaking and deviating.

As a modified example, a sealing sheet 5 is connected to one end of the valve flap 3 facing the outside of the valve body 1. Specifically, the gasket 5 is made of elastic material, and when the valve clack 3 blocks the water inlet 11, the gasket 5 can compensate for a gap between the valve clack 3 and the end surface in the valve body 1 through deformation formed by extrusion, so that a better sealing effect is formed.

As a modified example, a chamfer is formed on one end of the valve rod 31 protruding outward of the valve body 1. Specifically, the chamfer may remove burrs formed on the surface of the valve stem 31 during machining to reduce wear between the valve stem and the stop 22 and the raised ring 222 during movement.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims (10)

1. The utility model provides a prevent dual-clip over-and-under type check valve of jam, includes the valve body, is connected with the valve gap on the valve body, is formed with the delivery port on the valve gap, be equipped with relatively the valve clack that the valve gap removed, the valve clack can keep off in the water inlet, be equipped with in the valve body support in spring between valve gap and the valve clack, the spring makes the valve clack has the trend of blocking the water inlet, its characterized in that, be formed with the dog in the valve gap, be formed with the jack in the dog, be formed with on the valve clack and insert the valve rod in the jack, the valve rod is followed all the time outwards stretch out in the jack, the dog orientation be formed with on the terminal surface outside the valve body around the bulge loop of jack, the bulge loop is followed jack department downward sloping.

2. The anti-jamming pinch check valve according to claim 1, wherein the raised ring surface is a sloped flat surface.

3. The anti-jam, pinch check valve of claim 1, wherein a gap is left between the inner wall of the receptacle and the valve stem.

4. The anti-clogging split-clamping lift check valve according to claim 1, wherein at least two diverter blocks are formed between the inner wall of the valve cover and the stopper, the diverter blocks defining the water outlet therebetween.

5. The anti-clogging split-clamping lift check valve of claim 1, wherein the valve cover and the valve body are connected by threads.

6. The anti-clogging split-clamping lift check valve according to claim 1, wherein a support block is formed at an end of the stopper facing into the valve body, the insertion hole penetrates the stopper and the support block, and the valve stem penetrates the support block and is inserted into the stopper.

7. The anti-jam, butt-clamping, lift check valve of claim 6 wherein the spring is sleeved outside the support block and bears against the stop.

8. The anti-clogging split-clamping lift check valve according to claim 1, wherein a stopper is formed on one end of the valve flap facing into the valve body, and the spring is sleeved outside the stopper and abuts against the valve flap.

9. The anti-clogging pinch-to-pinch check valve of claim 1, wherein a sealing disc is attached to the valve flap at an end facing outside the valve body.

10. The anti-clogging split-clamping lift check valve according to claim 1, wherein an end of the valve stem projecting outward of the valve body is formed with a chamfer.

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