CN211371372U - Through-flow check valve - Google Patents

Abstract

The utility model discloses a through-flow check valve, which comprises a valve body, a flow stopping mechanism, a valve cover and a vertical column, the top end of the valve body is provided with a valve cover in a threaded manner, the valve body is communicated with the water inlet end and the water outlet end, the valve body is internally provided with a flow stopping mechanism, the flow stopping mechanism at least comprises a valve plate facing the water inlet end, and a fixed rod close to the water outlet end, the valve plate and the fixed rod are symmetrically distributed, and the fixed rod is horizontally distributed, is vertical to the valve plate, the valve plate is in a disc-shaped structure, one side of the fixed rod close to the water outlet end is in a conical arrangement, a fixing ring is integrally formed on the inner wall of the valve body close to the water inlet end, a clamping groove is formed on the surface of the fixing ring facing the valve plate, the clamping block is arranged on the plate wall of the valve plate in a protruding mode, the clamping block extends into the clamping groove, and the surface, opposite to the clamping block, of the plate wall of the valve plate is fixedly connected with the connecting rod. The through-flow check valve has the characteristics of reasonable structure, safety, reliability, convenience in use and the like, and can be widely popularized.

Description

Through-flow check valve

Technical Field

The utility model belongs to the technical field of the check valve, concretely relates to through-flow check valve.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar to a stop valve in structure, only lacks a valve rod for driving a valve clack, and medium flows in from an inlet end (lower side) and flows out from an outlet end (upper side). When the inlet pressure is greater than the sum of the weight of the valve clack and the flow resistance thereof, the valve is opened, otherwise, the valve is closed when the medium flows backwards, the swing check valve is provided with the valve clack which is obliquely arranged and can rotate around a shaft, and the working principle is similar to that of the lifting check valve. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. The check valve and the stop valve are combined for use, and the safety isolation effect can be achieved. The disadvantages are high resistance and poor sealing performance when closed.

At present, check valve internal connection form structure atress is relatively poor, and the valve plate is only in the laminating together with being connected of valve body mostly, and the leakproofness is relatively poor, needs further improvement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a through-flow check valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a through-flow check valve comprises a valve body, a flow stopping mechanism, a valve cover and a stand column, wherein the valve cover is installed at the top end of the valve body in a threaded mode, the valve body is communicated with a water inlet end and a water outlet end, the flow stopping mechanism is arranged inside the valve body and at least comprises a valve plate facing the water inlet end and a fixing rod close to the water outlet end, the valve plate and the fixing rod are symmetrically distributed, the fixing rod is horizontally distributed and perpendicular to the valve plate, the valve plate is of a disc-shaped structure, one side, close to the water outlet end, of the fixing rod is arranged in a conical mode, a fixing ring is integrally constructed on the inner wall, close to the water inlet end, of the valve body, a clamping groove is formed in the surface, facing the valve plate, of the fixing ring, a clamping block is arranged on the plate wall of the valve plate in a protruding mode, the clamping block extends into the clamping groove and, the vertical fixed setting of stand is in the inside department placed in the middle of the valve body, the portion placed in the middle of the stand is seted up and is supplied the gliding hole of connecting rod, and the stand on the outer wall of water outlet end with dead lever fixed connection, the connecting rod passes the stand and stretches into the inside to the dead lever to elastic connection with it.

Preferably, the inside of dead lever is seted up and is supplied the recess that the connecting rod stretched into, the one end that the valve plate was kept away from to the connecting rod passes the stand and stretches into to the recess inside, and offers the mouth towards the connecting rod terminal surface of recess, and inside also is the cavity setting.

Preferably, a sliding rod is horizontally and fixedly arranged in the middle of the inner part of the groove, and the sliding rod penetrates through the connecting rod and slides towards the inner part of the connecting rod.

Preferably, the spring is further sleeved on the outer wall of the sliding rod inside the groove, one end of the spring is fixedly connected with the connecting rod, and the other end of the spring is fixedly connected with the inner wall of the groove.

Preferably, water leakage holes are symmetrically formed in the upper side and the lower side of the connecting rod on the column wall of the upright column.

Preferably, the clamping blocks and the clamping grooves are mutually matched and are in annular shapes, and a sealing ring is arranged between the clamping blocks and the clamping grooves.

The utility model discloses a technological effect and advantage: this through-flow check valve, through end mechanism and intake between the end and set up solid fixed ring, gu the cooperation of fixed ring and fixture block, effectively promote the valve plate in the inside tightness of being connected of valve body, increase the leakproofness of valve body, through the connecting rod towards the inside slip of dead lever, and then the slide bar slides towards the connecting rod is inside, the spring shrink, whole atress is balanced, job stabilization nature is high, effectively increase the atress degree of valve body, the working property is outstanding, this through-flow check valve, rational in infrastructure, and has safe and reliable, characteristics such as convenient to use, can extensively promote.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the valve plate of the present invention;

fig. 3 is a schematic structural view of the flow stopping mechanism of the present invention.

In the figure: the water leakage prevention valve comprises a flow stopping mechanism 1, a water inlet end 2, a fixing ring 3, a valve cover 4, a valve body 5, a water outlet end 6, a clamping block 7, a water leakage hole 8, an upright post 9, a valve plate 10, a connecting rod 12, a sliding rod 13, a groove 14, a fixing rod 15 and a spring 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a through-flow check valve as shown in figures 1-3, including valve body 5, flow stopping mechanism 1, valve gap 4 and stand 9, valve gap 4 is installed to the top screw thread of valve body 5, valve body 5 communicates with water inlet 2, outlet 6, the inside of valve body 5 is provided with flow stopping mechanism 1, flow stopping mechanism 1 includes at least valve plate 10 towards water inlet 2, and is close to outlet 15 of outlet 6 dead lever 15, valve plate 10 and dead lever 15 symmetric distribution, and dead lever 15 horizontal distribution, perpendicular with valve plate 10, valve plate 10 is the disc-shaped structure, one side that dead lever 15 is close to outlet 6 is the toper setting, the solid fixed ring 3 of integrative structure on the inner wall of valve body 5 near water inlet 2, gu fixed ring 3 has seted up the draw-in groove on the face towards valve plate 10, the protruding fixture block 7 that is provided with on the plate wall of valve plate 10, inside the fixture block 7 stretched into the draw-in groove, with it laminating, the one side and the connecting rod 12 fixed connection that the siding wall of valve plate 10 is relative with fixture block 7, connecting rod 12 passes stand 9 and sliding connection with it, the vertical fixed department placed in the middle that sets up in valve body 5 inside of stand 9, the hole that supplies connecting rod 12 to slide is seted up to the portion placed in the middle of stand 9, and stand 9 on the outer wall of outlet end 6 towards with dead lever 15 fixed connection, connecting rod 12 passes stand 9 and stretches into the inside to dead lever 15 to elastic connection with it, through set up solid fixed ring 3 between the end of intaking at flow stopping mechanism 1, solid fixed ring 3 and fixture block 7's cooperation, effectively promote the valve plate 10 in the inside compactness of being connected of valve body 5, increase valve body 5's leakproofness.

Specifically, the inside of dead lever 15 is seted up and is supplied the recess 14 that connecting rod 12 stretched into, the one end that valve plate 10 was kept away from to connecting rod 12 passes stand 9 and stretches into to the recess 14 inside, and has seted up the mouth towards the connecting rod 12 terminal surface of recess 14, and inside also is the cavity setting, and connecting rod 12 slides towards the inside recess 14 of dead lever 15, just slides towards connecting rod 12 inside at the inside fixed slide bar 13 that sets up of recess 14 this moment.

Specifically, a sliding rod 13 is horizontally and fixedly arranged in the middle of the inner part of the groove 14, and the sliding rod 13 penetrates through the connecting rod 12 and slides towards the inner part.

Specifically, a spring 16 is further sleeved on the outer wall of the sliding rod 13 inside the groove 14, one end of the spring 16 is fixedly connected with the connecting rod 12, the other end of the spring is fixedly connected with the inner wall of the groove 14, the connecting rod 12 tightly pushes the spring 16 outside the sliding rod 13, and the spring 16 is stressed and contracted.

Specifically, water leakage holes 8 are symmetrically formed in the upper side and the lower side of the connecting rod 12 on the wall of the upright post 9, so that the water flow speed is increased.

Specifically, the clamping block 7 and the clamping groove are mutually matched and are both in an annular shape, and a sealing ring is arranged between the clamping block and the clamping groove.

Specifically, when the through-flow check valve is used, firstly, the valve body 5 is installed in a pipeline, when no medium passes through the valve body 5, the fixture block 7 extends into the inner side of the fixing ring 3, the valve plate 10 is tightly pressed through the elastic force of the spring 16, the inside of the valve body 5 is in a sealed state, when the medium enters the inside of the valve body 5 from the water inlet end 2, the valve plate 10 is stressed first and moves towards the upright post 9, at the moment, the fixture block 7 withdraws from the inside of the fixing ring 3, the valve plate 10 is pressed by water flow to be closer to the upright post 9, the water flow passes through the inside of the valve body 5 and flows out from the water outlet end 6, the fixing rod 15 is in a conical arrangement to facilitate the confluence of water, when the valve plate 10 approaches towards the upright post 9, the connecting rod 12 slides towards the groove 14 inside the fixing rod 15, at the moment, the sliding rod 13 fixedly arranged inside the groove 14, the spring 16 is stressed and contracted, after the water flow is finished, the spring 16 resets to push the connecting rod 12 back to the original position, the connecting rod 12 slides along the upright post 9, the sliding rod 13 retreats from the inside of the connecting rod 12 at the moment, the valve plate 10 sends the clamping block 7 into the fixing ring 3, the clamping block continues to abut against the valve plate, and the valve plate 10 seals the inside of the valve body 5.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (6)

1. The utility model provides a through-flow check valve, includes valve body (5), ends mechanism (1), valve gap (4) and stand (9), its characterized in that: the valve cover (4) is installed on the top end of the valve body (5) in a threaded mode, the valve body (5) is communicated with the water inlet end (2) and the water outlet end (6), the flow stopping mechanism (1) is arranged inside the valve body (5), the flow stopping mechanism (1) at least comprises a valve plate (10) facing the water inlet end (2) and a fixing rod (15) close to the water outlet end (6), the valve plate (10) and the fixing rod (15) are symmetrically distributed, the fixing rod (15) is horizontally distributed and perpendicular to the valve plate (10), the valve plate (10) is of a disc-shaped structure, one side, close to the water outlet end (6), of the fixing rod (15) is in a conical arrangement, a fixing ring (3) is integrally constructed on the inner wall, close to the water inlet end (2), a clamping groove is formed in the face, facing the valve plate (10), of the fixing ring (3), and a clamping block (7) is arranged on, inside fixture block (7) stretched into the draw-in groove, with it laminating, the one side and connecting rod (12) fixed connection that the bulkhead of valve plate (10) is relative with fixture block (7), connecting rod (12) pass stand (9) and sliding connection with it, stand (9) vertical fixed setting is in the inside department placed in the middle of valve body (5), the portion placed in the middle of stand (9) is seted up and is supplied connecting rod (12) gliding hole, and stand (9) go out on the outer wall of water end (6) towards with dead lever (15) fixed connection, connecting rod (12) pass stand (9) and stretch into the inside of dead lever (15) to elastic connection with it.

2. A through-flow check valve as set forth in claim 1 wherein: recess (14) that supply connecting rod (12) to stretch into are seted up to the inside of dead lever (15), the one end that valve plate (10) were kept away from in connecting rod (12) is passed stand (9) and is stretched into to recess (14) inside, and has seted up the mouth towards connecting rod (12) terminal surface of recess (14), and inside also is the cavity setting.

3. A through-flow check valve as set forth in claim 2 wherein: a sliding rod (13) is horizontally and fixedly arranged at the middle part inside the groove (14), and the sliding rod (13) penetrates through the connecting rod (12) to slide towards the inside of the connecting rod.

4. A through-flow check valve as set forth in claim 2 wherein: the inner part of the groove (14) is further sleeved with a spring (16) on the outer wall of the sliding rod (13), one end of the spring (16) is fixedly connected with the connecting rod (12), and the other end of the spring is fixedly connected with the inner wall of the groove (14).

5. A through-flow check valve as set forth in claim 1 wherein: and water leakage holes (8) are symmetrically formed in the upper side and the lower side of the connecting rod (12) on the column wall of the upright column (9).

6. A through-flow check valve as set forth in claim 1 wherein: the clamping block (7) and the clamping groove are mutually matched and are both in an annular shape, and a sealing ring is arranged between the clamping block and the clamping groove.

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