CN220416336U - Guide check valve - Google Patents

Abstract

The utility model discloses a guide check valve, comprising: the valve body, the one end spiro union of valve body has support one, and the one end fixed connection guide bar of support one, and the one end spiro union of guide bar one has the case, and the one end spiro union of case has guide bar two, and guide bar two installs on support two, and support two spiro union is in the one end of valve body, and guide bar two and guide bar coaxial arrangement. The first guide rod and the second guide rod are telescopic pipes, are arranged in the outer pipe sleeve, and are fixedly provided with springs between the first guide rod and the valve core, and the springs are in a stretching state when no external force is applied. According to the guide check valve provided by the utility model, the valve core is arranged into the cone frustum-shaped structure, the valve core is stable under the action of the first bracket, the second guide rod, the first guide rod and the spring, the smooth discharge of liquid is facilitated, the valve core is not easy to damage under the impact of water flow, and poor check effect caused by poor sealing can be avoided.

Description

Guide check valve

Technical Field

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

Background

The check valve is a valve with a circular valve clack as an opening and closing part and can stop the medium from flowing backwards by the action of the self weight and the medium pressure, and the medium flows in from an inlet end and flows out from an outlet end; 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 prior Chinese patent document with the publication number of CN215721045U discloses a spring vertical check valve with a guide, which sequentially comprises a valve cover, a valve cover sealing gasket, a valve clack, a spring, a valve body, a spring cavity, a guide hole, an inlet end, an outlet end, a sealing surface and a valve cover part, wherein the lower part of the valve cover is connected with the valve body, the valve cover sealing gasket is arranged between the valve cover and the valve body, the sealing surface is arranged at the bottom of the valve cover, and the lower part of the sealing surface is connected with the valve clack; a spring cavity of the valve cover, wherein the middle part of the valve cover is provided with a valve rod cavity of the valve cover; the upper part of the valve clack is connected with the sealing surface of the valve cover, the lower part of the valve clack is connected with the guide hole, and a spring is arranged in the middle of the valve clack; and the upper part of the spring part is connected with the valve clack, the lower part of the spring part is connected with the guide hole, and the valve body and the valve clack form a spring cavity.

Although the above-mentioned vertical check valve of spring of area direction has solved the technical problem that proposes, but, its in-service use, because its valve clack is concave design, makes the valve clack not firm enough under the impact of rivers, is unfavorable for smooth discharge of liquid, can cause the valve clack to damage simultaneously under the impact of rivers, therefore causes sealed not tight, leads to the non return effect relatively poor.

For this purpose, a pilot check valve is proposed.

Disclosure of Invention

The present utility model is directed to a guide check valve to solve the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a guided check valve comprising: the valve body, the one end spiro union of valve body has support one, the one end fixed connection guide bar of support one, the one end spiro union of guide bar one has the case, the one end spiro union of case has guide bar two, guide bar two installs on support two, support two spiro union is in the one end of valve body, guide bar two with guide bar coaxial arrangement.

Preferably, the first guide rod and the second guide rod are telescopic tubes which are arranged in the outer tube sleeve.

By adopting the technical scheme: by utilizing the guiding function of the telescopic pipe, the valve core can be prevented from shaking under the action of water pressure, so that the structural stability of the guiding check valve is improved.

Preferably, a spring is fixedly installed between the first guide rod and the valve core, when no external force is applied, the spring is in a stretched state, meanwhile, the valve core is in a sealing state with the valve body under the action of the spring, when the valve core receives the acting force of which the direction faces the second guide rod, a gap is reserved between the valve core and the valve body, and when the valve core receives the acting force of which the direction faces the first guide rod, the valve core and the valve body are in a sealing state.

By adopting the technical scheme: the two ends of the spring are fixed at one end of the first guide rod and one end of the valve core, so that the valve core is conducted and stopped under the action of water pressure.

Preferably, a sealing rubber pad is glued on the surface of the valve core.

By adopting the technical scheme: the sealing check effect is better by gluing the sealing rubber pad on the surface of the valve core.

Preferably, two flanges are fixedly connected to two ends of the valve body.

By adopting the technical scheme: so that the guide check valve is convenient for connection installation.

Preferably, the valve core is in a truncated cone structure.

By adopting the technical scheme, the valve core is convenient to conduct and close.

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

according to the guide check valve provided by the utility model, the valve core is arranged into the cone frustum-shaped structure, the valve core is stable under the action of the first bracket, the second guide rod, the first guide rod and the spring, the smooth discharge of liquid is facilitated, the valve core is not easy to damage under the impact of water flow, and poor check effect caused by poor sealing can be avoided.

Drawings

FIG. 1 is a schematic perspective view of a pilot check valve of the present utility model;

FIG. 2 is a schematic perspective view of another view of the pilot check valve of the present utility model;

fig. 3 is a schematic cross-sectional structure of the guide check valve of the present utility model.

In the figure: 1. a flange; 2. a valve body; 3. a liquid inlet; 4. a first bracket; 5. a first guide rod; 6. a spring; 7. a valve core; 8. sealing a rubber pad; 9. a second guide rod; 10. a second bracket; 11. and a liquid outlet.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present embodiment provides a pilot check valve comprising: the valve body 2, the one end spiro union of valve body 2 has support one 4, support one 4's one end fixed connection guide bar one 5, guide bar one 5 activity stretches into the inside of valve body 2, guide bar one 5 is kept away from support one 4's one end spiro union has case 7, fixed mounting has spring 6 between guide bar one 5 and the case 7, through fixing the both ends of spring 6 at guide bar one 5 and the one end of case 7, simultaneously with guide bar two 9 and guide bar one 5 coaxial setting, when not receiving external force, spring 6 is in tensile state, case 7 is in sealing state under the effect of spring 6 with valve body 2, when case 7 receives the effort of direction orientation guide bar two 9, there is the clearance between case 7 and the valve body 2, when case 7 receives the effort of direction orientation guide bar one 5, be in sealing state between case 7 and the valve body 2, case 2 is the frustum of cone shape structure, make the performance of case 2 more stable under the effect of support one 4, guide bar two 9, guide bar one 5 and spring 6, be favorable to the smooth discharge of liquid, under the impact 2 is not fragile, can not cause bad sealing effect of the case can avoid causing the non-return seal.

In order to improve the sealing property between the valve element 7 and the valve body 2, a sealing rubber gasket 8 is adhered to the surface of the valve element 7, and the sealing property between the valve element 7 and the valve body 2 can be improved by adhering the sealing rubber gasket 8 to the surface of the valve element 7.

In order to further improve the stability of the valve core 7, a second guide rod 9 is in threaded connection with one end, far away from the first guide rod 5, of the valve core 7, a second support 10 is fixedly arranged at one end, far away from the valve core 7, of the second guide rod 9, the second support 10 is in threaded connection with the other end of the valve body 2, and the stability of the valve core 7 can be further improved through the fact that the second guide rod 9 is matched with the second support 10.

Specifically, the first guide rod 5 and the second guide rod 9 are telescopic pipes, the telescopic pipes are structures arranged by the inner rods of the outer pipe movable sleeve, and the stability of the valve core 7 can be effectively prevented from being influenced by shaking under the action of water pressure by utilizing the guiding action of the telescopic pipes.

In order to facilitate the installation of the guide check valve, two flanges 1 are also fixedly connected to both ends of the valve body 2.

Wherein, the inner ring surface of the flange 1 close to the first bracket 4 is provided with a liquid inlet 3, and the inner ring surface of the flange 1 close to the second bracket 10 is provided with a liquid outlet 11.

The whole structure principle is as follows: when water flows into the valve body 2 from the liquid inlet 3, the water flows at one side of the valve core 7 close to the first support 4, the water flow pressure is gradually increased, the first guide rod 5 and the valve core 7 are pushed to move towards the second guide rod 9, a gap is formed between the valve core 7 and the valve body 2, the water flows out of the liquid outlet 11 of the valve body 7, the water flow is closed, the valve core 7 closes at one side of the valve core 7 under the contraction of the spring 6, and the water flow at one side of the valve core 7 is closed at one side of the valve body 2 close to the second guide rod 9, so that the non-return purpose is realized.

To sum up: the valve core 2 is arranged into a truncated cone-shaped structure, the performance of the valve core 2 is stable under the action of the first bracket 4, the second guide rod 9, the first guide rod 5 and the spring 6, the smooth discharge of liquid is facilitated, the valve core 2 is not easy to damage under the impact of water flow, and poor non-return effect caused by poor sealing can be avoided.

None of the utility models are related to the same or are capable of being practiced in the prior art. Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A pilot check valve, comprising: the valve body, the one end spiro union of valve body has support one, the one end fixed connection guide bar of support one, the one end spiro union of guide bar one has the case, the one end spiro union of case has guide bar two, guide bar two installs on support two, support two spiro union is in the one end of valve body, guide bar two with guide bar coaxial arrangement.

2. A pilot check valve according to claim 1, wherein: the first guide rod and the second guide rod are telescopic pipes which are arranged by an inner rod of the outer pipe sleeve.

3. A pilot check valve according to claim 2, wherein: the valve is characterized in that a spring is fixedly arranged between the first guide rod and the valve core, when no external force is applied, the spring is in a stretching state, meanwhile, the valve core is in a sealing state with the valve body under the action of the spring, when the valve core receives the acting force of which the direction faces the second guide rod, a gap is reserved between the valve core and the valve body, and when the valve core receives the acting force of which the direction faces the first guide rod, the valve core and the valve body are in a sealing state.

4. A pilot check valve according to claim 3, wherein: the surface of the valve core is glued with a sealing rubber pad.

5. A pilot check valve according to claim 3, wherein: two ends of the valve body are fixedly connected with two flanges.

6. A pilot check valve according to claim 4, wherein: the valve core is of a truncated cone structure.