CN214999602U

CN214999602U - Filter valve with non-return function

Info

Publication number: CN214999602U
Application number: CN202120805059.3U
Authority: CN
Inventors: 吴福双
Original assignee: Zhejiang Guozhu Valve Technology Co ltd
Current assignee: Zhejiang Guozhu Valve Technology Co ltd
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-12-03
Anticipated expiration: 2031-04-19

Abstract

The utility model relates to a filter valve with non return function, including valve body and valve gap, both sides on the valve body are equipped with the influent stream mouth respectively and flow out the mouth, and the junction of influent stream mouth and flow out the mouth is equipped with the blowdown branch pipe, and the valve gap is connected with the one end of blowdown branch pipe, be equipped with the filter screen between valve gap and the influent stream mouth, the filter screen is the cavity form, the valve gap is equipped with spliced pole and case in the direction of blowdown branch pipe, and the case is connected with the spliced pole and locates in the filter screen, and the case passes through the spliced pole and removes along the direction of blowdown branch pipe for the case is connected with the influent stream mouth, be equipped with the water conservancy diversion hole on the spliced pole. The utility model aims to design a strainer valve with non return function through adding the non return structure in filter screen department for prevent the foreign particles backward flow in the filter screen at hydraulic system at decompression pressure release in-process, thereby prolong hydraulic system's life.

Description

Filter valve with non-return function

Technical Field

The utility model relates to the technical field of valves, in particular to filter valve with non return function.

Background

The filter valve is a common valve, the filter screen is arranged at the joint of the valve, particle impurities in a filter medium are filtered through the filter screen, and the filter screen is replaced by opening the valve cover, so that the filter valve is periodically maintained, dirt in a hydraulic system is prevented from being accumulated, local blockage is prevented, and the service life of the hydraulic system is prolonged.

However, when the filter screen is replaced, the increase of the hydraulic pressure in the system needs to be stopped in advance, and the medium backflow phenomenon easily occurs, so that the backflow medium drives the particle impurities in the filter valve to move and accumulate at the positions of a hydraulic valve, a pipeline and the like, and the service life of the hydraulic system is shortened.

Disclosure of Invention

In order to overcome the not enough of background art, the utility model aims to design a strainer valve with non return function through adding the non return structure in filter screen department for prevent the foreign particles backward flow in the filter screen at hydraulic system at decompression pressure release in-process, thereby prolong hydraulic system's life.

The utility model adopts the technical proposal that: the utility model provides a filter valve with non return function, includes valve body and valve gap, and both sides on the valve body are equipped with the influent stream mouth respectively and flow out the mouth, and the junction of influent stream mouth and flow out the mouth is equipped with the blowdown branch pipe, and the valve gap is connected with the one end of blowdown branch pipe, be equipped with the filter screen between valve gap and the influent stream mouth, the filter screen is the cavity form, be equipped with spliced pole and case on the valve gap orientation blowdown branch pipe's the direction, the case is connected with the spliced pole and locates in the filter screen, and the case passes through the spliced pole and removes along the direction of blowdown branch pipe for the case is connected with the influent stream mouth, be equipped with the water conservancy diversion hole on the spliced pole.

By adopting the technical scheme, the liquid medium flows in from the inlet, passes through the sewage branch pipe and flows out from the outlet after being filtered by the filter screen, the filter screen is fixedly arranged between the valve cover and the inlet through the sewage branch pipe, so that the valve core is prevented from being fallen off and influenced, the valve core moves along the connecting column, when the liquid medium enters from the inlet due to hydraulic pressure and flows out from the outlet, the liquid hydraulic pressure pushes the valve core to be compressed through the flow guide holes, and the liquid medium flows out from the outlet through the filtering of the filter screen, so that the normal filtering effect is realized; when the liquid medium enters from the outflow port due to hydraulic pressure, and the inflow port flows out, the liquid hydraulic pressure pushes the valve element to be close to the inflow port and block the inflow port through the diversion hole, so that the liquid medium cannot flow out from the inflow port, the liquid medium is prevented from carrying impurity particles in the filter screen to flow back, impurities in the pipeline are prevented from being further accumulated, and the service life of the hydraulic system is prolonged.

The utility model discloses further set up to, the cross section size of blowdown branch pipe reduces along the valve gap orientation of influent stream mouth gradually, the appearance and the blowdown branch pipe phase-match of filter screen, the filter screen is fixed in the blowdown branch pipe.

Furthermore, the filter screen is hollow round platform form and is equipped with the turn-over angle with the link of valve gap, the valve gap is fixed the filter screen through the turn-over angle, the junction of influent stream mouth and filter screen is equipped with the card edge, the filter screen through the card edge with the valve body is connected.

Adopt above-mentioned technical scheme, blowdown branch pipe global design becomes the tubulose of outside draft, increase the holding capacity of foreign particles in the filter screen, avoid the case to remove the in-process simultaneously and interfere and wearing and tearing with the filter screen, the filter screen passes through the card and installs under the effect of valve gap in the blowdown branch pipe, thereby avoids the filter screen dislocation to influence the removal of case, thereby the case is direct to play non-return effect with the card along the contact, avoid the case directly to destroy the filter screen, overall structure is simple and simple to operate.

The utility model discloses further set up to, the case is discoid, and case surface diameter size is greater than the diameter size of inlet for the case can cover the inlet.

Furthermore, the valve core is provided with a connecting rod, and the valve core is connected with the connecting column through the connecting rod and can move along the connecting column.

By adopting the technical scheme, the clamping edge is matched with the shape of the valve core along the circular ring formed in the valve body, so that the valve core just blocks the inflow port, the valve core moves in the connecting column through the connecting rod, the non-return effect achieved by the hydraulic acting force is realized, the structure is simple, and resources are saved.

The utility model discloses further set up to, be equipped with the spring in the spliced pole, the one end and the spring coupling of connecting rod.

Further, the top of connecting rod is equipped with the rubber dish, and the rubber dish is the round platform form, the external diameter of spring is less than the rubber dish, and the spring is connected with the surface of rubber dish.

By adopting the technical scheme, the force required by blocking the inflow port by the valve core is reduced by adding the spring, the rubber disc is passed through at the bottom of the connecting rod, the contact surface of the liquid medium and the rubber disc is improved, the condition required by closing the valve core is reduced, and the non-return effect is improved.

The embodiments of the present invention will be further explained with reference to the drawings.

Drawings

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

fig. 2 is a perspective view of the valve element of the present invention;

Detailed Description

As shown in fig. 1 and 2, a filter valve with a non-return function includes a valve body 01 and a valve cover 02, a flow inlet 11 and a flow outlet 12 are respectively arranged on two sides of the valve body 01, a sewage branch pipe 13 is arranged at the joint of the flow inlet 11 and the flow outlet 12, the valve cover 02 is connected with one end of the sewage branch pipe 13, a filter screen 03 is arranged between the valve cover 02 and the flow inlet 11, the filter screen 03 is hollow, a connecting column 21 and a valve core 22 are arranged on the valve cover 02 in the direction towards the sewage branch pipe 13, the valve core 22 is connected with the connecting column 21 and arranged in the filter screen 03, and the valve core 22 moves along the direction of the sewage branch pipe 13 through the connecting column 21, so that the valve core 22 is connected with the flow inlet 11, and a flow guide hole 211 is arranged on the connecting column 21. Liquid medium flows in from the inlet 11, passes through the sewage branch pipe 13, flows out from the outlet 12 after being filtered by the filter screen 03, the filter screen 03 is fixedly arranged between the valve cover 02 and the inlet 11 through the sewage branch pipe 13, so that the valve core 22 is prevented from being influenced by the falling of the filter screen 03, the valve core 22 moves along the connecting column 21, when the liquid medium enters from the inlet 11 due to hydraulic pressure and flows out from the outlet 12, the liquid hydraulic pressure pushes the valve core 22 to be compressed through the flow guide hole 211, and the liquid medium flows out from the outlet 12 through the filtering of the filter screen 03, so that the normal filtering effect is realized; when the liquid medium enters from the outflow port 12 due to hydraulic pressure and flows out from the inflow port 11, the liquid hydraulic pressure pushes the valve element 22 to be close to the inflow port 11 through the flow guide hole 211 and block the inflow port 11, so that the liquid medium cannot flow out from the inflow port 11, the liquid medium is prevented from carrying impurity particles in the filter screen 03 to flow back, impurities in a pipeline are prevented from being further accumulated, and the service life of the hydraulic system is prolonged.

The cross section size of blowdown branch pipe 13 reduces gradually along valve gap 02 towards the direction of inflow 11, the appearance and the blowdown branch pipe 13 phase-match of filter screen 03, filter screen 03 is fixed in blowdown branch pipe 13. Further, the filter screen 03 is hollow round table-shaped, and a turning angle 31 is arranged at the connecting end of the filter screen 03 and the valve cover 02, the filter screen 03 is fixed by the valve cover 02 through the turning angle 31, a clamping edge 16 is arranged at the connecting position of the inlet 11 and the filter screen 03, and the filter screen 03 is connected with the valve body 01 through the clamping edge 16. Blowdown branch pipe 13 global design becomes the tubulose of outside draft, increase the holding capacity of foreign particles in the filter screen 03, avoid case 22 to remove the in-process simultaneously and interfere and wearing and tearing with filter screen 03, install in blowdown branch pipe 13 under filter screen 03 passes through the effect of card edge 16 and valve gap 02, thereby avoid filter screen 03 dislocation to influence case 22's removal, thereby case 22 directly plays non return's effect with card edge 16 contact, avoid case 22 directly to destroy filter screen 03, the simple and convenient to operate of overall structure.

The valve core 22 is disc-shaped, and the diameter of the surface of the valve core 22 is larger than that of the inlet 11, so that the valve core 22 can cover the inlet 11. Furthermore, a connecting rod 221 is disposed on the valve core 22, and the valve core 22 is connected to the connecting rod 21 through the connecting rod 221 and can move along the connecting rod 21. The shape of the ring formed by the clamping edge 16 in the valve body 01 is matched with that of the valve core 22, so that the valve core 22 just blocks the inflow opening, the valve core 22 moves in the connecting column 21 through the connecting rod 221, the non-return effect achieved through hydraulic acting force is achieved, the structure is simple, and resources are saved.

A spring 04 is arranged in the connecting column 21, and one end of the connecting rod 221 is connected with the spring 04. Further, a rubber disc 222 is arranged at the top of the connecting rod 221, the rubber disc 222 is in a circular truncated cone shape, the outer diameter of the spring 04 is smaller than that of the rubber disc 222, and the spring 04 is connected with the surface of the rubber disc 222. The force required by the valve core 22 for blocking the inlet 11 is reduced by adding the spring 04, and the bottom of the connecting rod 221 passes through the rubber disc 222, so that the contact surface of the liquid medium and the rubber disc 222 is improved, the condition required by closing the valve core 22 is reduced, and the non-return effect is improved.

The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited thereto, and any modification that utilizes the inventive concepts will be within the scope of the patent claims.

Claims

1. The utility model provides a filter valve with non return function, includes valve body and valve gap, and both sides on the valve body are equipped with the influent stream mouth respectively and flow out the mouth, and the junction of influent stream mouth and flow out the mouth is equipped with the blowdown branch pipe, and the valve gap is connected with the one end of blowdown branch pipe, its characterized in that, be equipped with the filter screen between valve gap and the influent stream mouth, the filter screen is the cavity form, be equipped with spliced pole and case on the valve gap orientation blowdown branch pipe's the direction, the case is connected with the spliced pole and locates in the filter screen, and the case passes through the spliced pole and removes along the direction of blowdown branch pipe for the case is connected with the influent stream mouth, be equipped with the water conservancy diversion hole on the spliced pole.

2. The filter valve with a check function according to claim 1, wherein: the cross section size of blowdown branch pipe reduces along the valve gap orientation of intake direction gradually, the appearance and the blowdown branch pipe phase-match of filter screen, the filter screen is fixed in the blowdown branch pipe.

3. The filter valve with a check function according to claim 2, wherein: the filter screen is hollow round platform form and is equipped with the turn-over angle with the link of valve gap, the valve gap is fixed the filter screen through the turn-over angle, the junction of influent stream mouth and filter screen is equipped with the card edge, the filter screen through the card edge with the valve body is connected.

4. A filter valve with non-return function according to claim 3, characterized in that: the valve core is disc-shaped, and the diameter of the surface of the valve core is larger than that of the flow inlet, so that the valve core can cover the flow inlet.

5. A filter valve with non-return function according to claim 4, characterized in that: the valve core is provided with a connecting rod, and the valve core is connected with the connecting column through the connecting rod and can move along the connecting column.

6. A filter valve with non-return function according to claim 5, characterized in that: the connecting column is internally provided with a spring, and one end of the connecting rod is connected with the spring.

7. The filter valve with a check function according to claim 6, wherein: the top of connecting rod is equipped with the rubber dish, and the rubber dish is the round platform form, the external diameter of spring is less than the rubber dish, and the spring is connected with the surface of rubber dish.