CN209762357U - Adjust accurate relief pressure valve - Google Patents

Abstract

The utility model discloses an adjust accurate relief pressure valve, including valve body and valve gap, be provided with left baffle in the valve body, right side baffle and plastics core, left side baffle forms out the chamber with the valve body, right side baffle and valve body form into the chamber, the plastics core sets up between left side baffle and right baffle, the coaxial case that is provided with in the plastics core, the case is located into the intracavity, the case upper end is connected with the membrane gasket, the inner wall of plastics core is equipped with inside right angle turn-ups, inside right angle turn-ups removes the direction to the case, the inside pressure guide hole that has run through of plastics core, pressure guide hole communicates with each other with advancing the chamber, the membrane gasket is located the exit end top in pressure guide hole, plastics core outer wall is equipped with the filter screen, be equipped with sealing washer I between case and the plastics core, be. The utility model discloses an inside right angle turn-ups carries out spacing direction to the case and removes, can not produce the skew, and pressure differential regulation precision is higher, should lead the pressure hole and directly by the shaping of plastics core mould, impurity among the effective filter medium, the effectual leakproofness of guaranteeing between the inside.

Description

Adjust accurate relief pressure valve

Technical Field

The utility model belongs to the technical field of the valve is made, especially, relate to an adjust accurate relief pressure valve.

Background

At present, a pressure reducing valve is a device for reducing the working pressure of a pipeline, the inlet pressure is reduced to a certain required outlet pressure through adjustment, the outlet pressure is automatically kept stable by means of the energy of a medium, and the pressure reducing valve is widely used.

In the using process, the existing pressure reducing valve has certain defects, and under the long-term impact of high-pressure medium, the leakage problem exists between the valve core and the cavity of the valve body, so that the whole valve fails. The existing pressure reducing valve is directly arranged on the valve body when a pressure guide hole is arranged, the processing requirement is very high, and the problems of low stability and poor regulation accuracy exist due to long-term use. In addition, under high pressure operation, impurities in the media can wear the internal seal and even cause wear of the spring component, which has a certain effect on the overall pressure reducing valve, and therefore, improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an adjust accurate relief pressure valve to the not enough of above-mentioned prior art existence, it has that the leakproofness is better, directly set up on the accessory and lead pressure hole, case direction, stably adjust accurate and filtering capability's characteristics.

In order to achieve the above object, the utility model adopts the following technical scheme: a pressure reducing valve with accurate adjustment comprises a valve body and a valve cover, wherein the valve cover is installed on the valve body, the valve cover is of a hollow structure, a left baffle, a right baffle and a plastic core are arranged in the valve body, the left baffle and the valve body form a cavity, the right baffle and the valve body form a cavity, the plastic core is arranged between the left baffle and the right baffle, a valve core is coaxially arranged in the plastic core, the valve core is positioned in the cavity, a membrane gasket is connected to the upper end of the valve core, an inward right-angle flanging is arranged on the inner wall of the plastic core and guides the movement of the valve core, a pressure guide hole penetrates through the plastic core and is communicated with the cavity, the membrane gasket is positioned above the outlet end of the pressure guide hole, a filter screen is arranged on the outer wall of the plastic core, a sealing ring I is arranged between the valve core and the plastic core, and a sealing ring II is arranged between the, and a threaded hole is formed in the lower end of the valve core, and a hexagonal plug cover is arranged in the threaded hole.

Preferably, the both ends of valve body are provided with the external screw thread, install the hexagon cap on the external screw thread, be equipped with the joint in the hexagon cap, be equipped with the rubber packing between the terminal surface of joint and valve body.

Preferably, be provided with adjusting bolt, nut pad, end cap pad spare and spring in the valve gap, the cover is equipped with and marks the tablet between adjusting bolt and the nut, the nut fills up the terminal surface under the nut, adjusting bolt is connected with the end cap pad spare, the spring butt is in the end cap lower part, the embedded pad spare that has on the diaphragm gasket, the pad is equipped with the steel gasket on the pad spare, it is fixed that construction bolt is last on the steel gasket, the lower extreme and the steel gasket looks butt of spring.

Preferably, the inner edge and the outer edge of the left baffle and the right baffle are both provided with a fillet.

Preferably, be provided with a plurality of filtration pores on the filter screen, the aperture of filtering the pore is 0.08um-010 um.

Preferably, the hexagonal plug cover is sleeved with a plug rubber pad and a plug gasket.

after the structure is adopted, compared with the prior art, the utility model the advantage that has is: the utility model has the advantages of simple and reasonable structure, through the setting of plastics core, the inside right angle turn-ups can carry out spacing direction removal to the case, and the inside right angle turn-ups adopts the right angled angle, makes case direction area of contact increase, and the removal is very stable, can not produce the skew, and pressure differential regulation precision is higher; the pressure guide hole is formed in the plastic core in a penetrating mode and is directly formed by a plastic core die, machining on the valve body is not needed, and production is very convenient; through the arrangement of the filter screen, impurities in the medium can be effectively filtered, and the inner sealing structure is prevented from being abraded; through sealing washer I and sealing washer II's setting, the leakproofness between the effectual assurance inside.

Drawings

Fig. 1 is an exploded view of the present invention;

FIG. 2 is an assembly view of the present invention;

In the figure: 1. a valve body; 2. a valve cover; 3. a left baffle; 4. a right baffle; 5. a plastic core; 6. discharging the cavity; 7. entering a cavity; 8. a valve core; 9. a membrane gasket; 10. inward right-angle flanging; 11. pressure guide holes; 12. a filter screen; 13. a seal ring I; 14. a seal ring II; 15. a threaded hole; 16. a hexagonal plug cover; 17. an external thread; 18. a hexagonal cap; 19. a joint; 20. a rubber gasket; 21. adjusting the bolt; 22. a nut; 23. A nut cushion; 24. a plug; 25. a plug pad; 26. a spring; 27. a nameplate; 28. a cushion member; 29. A steel gasket; 30. a bolt; 31. a plug rubber pad; 32. and (7) a plug gasket.

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.

Referring to fig. 1-2, a pressure reducing valve with precise adjustment comprises a valve body 1 and a valve cover 2, wherein the valve cover 2 is installed on the valve body 1, the valve cover 2 is of a hollow structure, a left baffle 3, a right baffle 4 and a plastic core 5 are arranged in the valve body 1, the left baffle 3 and the valve body 1 form a cavity 6, the right baffle 4 and the valve body 1 form a cavity 7, the plastic core 5 is arranged between the left baffle 3 and the right baffle 4, a valve core 8 is coaxially arranged in the plastic core 5, the valve core 8 is positioned in the cavity 7, the upper end of the valve core 8 is connected with a membrane gasket 9, the inner wall of the plastic core 5 is provided with an inward right-angle flange 10, the inward right-angle flange 10 guides the movement of the valve core 8, a pressure guide hole 11 is arranged in the plastic core 5 in a penetrating manner, the pressure guide hole 11 is communicated with the cavity 7, the membrane gasket 9 is positioned above the outlet end of the pressure guide hole 11, the outer wall of the plastic core, a sealing ring II14 is arranged between the plastic core 5 and the valve body 10, a threaded hole 15 is arranged in the lower end of the valve core 8, and a hexagonal plugging cover 16 is arranged in the threaded hole 15.

In the embodiment, the structure is simple and reasonable, the inward right-angle flanging 10 can limit, guide and move the valve core 8 through the arrangement of the plastic core 5, the inward right-angle flanging 10 adopts a right-angle, so that the guide contact area of the valve core 8 is increased, the movement is very stable, the deviation cannot be generated, and the differential pressure regulation precision is higher; the pressure guide hole 11 is arranged in the plastic core 5 in a penetrating way, the pressure guide hole 11 is directly formed by the plastic core 5 through a die, the valve body 10 is not required to be processed, and the production is very convenient; through the arrangement of the filter screen 12, impurities in the medium can be effectively filtered, and the inner sealing structure is prevented from being abraded; through the setting of sealing washer I13 and sealing washer II14, the leakproofness between the inside is effectively guaranteed.

Specifically, when the pressure reducing valve works, when the pressure of the inlet cavity 7 is increased or decreased, the pressure guide hole 11 of the plastic core 5 transmits the pressure to the membrane gasket 9, and the membrane gasket 9 deforms to drive the valve core 8 to move upwards or downwards, so that the water inlet gap between the hexagonal plug cover 16 and the plastic core 5 is reduced or increased, the water outlet pressure of the outlet cavity 6 is reduced or increased, and the upper pressure and the lower pressure of the membrane gasket 9 reach new balance. The filter 12 is a cylindrical filter installed in a nested manner. Be equipped with screw hole 15 in the lower extreme of case 8, directly install hexagonal blanking cover 16 in the screw hole 15, need not to adopt screw fixed mounting, it is very convenient to use.

Further, both ends of the valve body 10 are provided with external threads 17, a hexagonal cap 18 is mounted on the external threads 17, a joint 19 is arranged in the hexagonal cap 18, and a rubber gasket 20 is arranged between the joint 19 and the end face of the valve body 10.

In this embodiment, the structure is used for connecting and installing other pipelines, and the rubber gasket 20 ensures the firmness and the installation sealing performance.

Furthermore, an adjusting bolt 21, a nut 22, a nut pad 23, a plug 24, a plug pad 25 and a spring 26 are arranged in the valve cover 2, a nameplate 27 is sleeved between the adjusting bolt 21 and the nut 22, the nut pad 23 is tightly attached to the lower end face of the nut 22, the adjusting bolt 21 is connected with the plug pad 25, the spring 26 abuts against the lower portion of the plug 24, a pad 28 is embedded in the membrane gasket 9, a steel gasket 29 is padded on the pad 28, a mounting bolt 30 is fixed on the steel gasket 29, and the lower end of the spring 26 abuts against the steel gasket 29.

In this embodiment, the installation connectivity among the adjusting bolt 21, the nut 22, the nut washer 23, the plug 24, the plug washer 25 and the spring 26 is quite reasonable, and the indication board 27 is used for indicating the use parameters of the valve for the user to view.

Furthermore, the inner edge and the outer edge of the left baffle 3 and the right baffle 4 are both provided with fillets.

In this embodiment, the inner and outer edges of the left baffle 3 and the right baffle 4 are both provided with fillets, so that the cavitation influence of the flowing medium is reduced, the service life of the flowing medium is prolonged, and the noise pollution is reduced.

Furthermore, the filter screen 12 is provided with a plurality of filter holes, and the aperture of the filter holes is 0.08um-010 um.

In this embodiment, the aperture has a good use effect, and the filtered water has a good quality.

Further, a plug rubber pad 31 and a plug gasket 32 are sleeved on the hexagonal plug 16.

In this embodiment, the hexagonal plug cover 6 is sleeved with a plug rubber pad 31 and a plug gasket 32, so that the hexagonal plug cover 6 can be ensured to be damaged, and the service life of the hexagonal plug cover is prolonged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an adjust accurate relief pressure valve, includes valve body and valve gap, the valve gap is installed on the valve body, the valve gap is hollow structure, its characterized in that: a left baffle, a right baffle and a plastic core are arranged in the valve body, the left baffle and the valve body form a cavity, the right baffle and the valve body form an inlet cavity, the plastic core is arranged between the left baffle and the right baffle, a valve core is coaxially arranged in the plastic core, the valve core is positioned in the inlet cavity, the upper end of the valve core is connected with a membrane gasket, the inner wall of the plastic core is provided with an inward right-angle flanging which guides the movement of the valve core, a pressure guide hole is arranged in the plastic core in a penetrating way, the pressure guide hole is communicated with the inlet cavity, the membrane gasket is positioned above the outlet end of the pressure guide hole, a filter screen is arranged on the outer wall of the plastic core, a sealing ring I is arranged between the valve core and the plastic core, a sealing ring II is arranged between the plastic core and the valve body, a threaded hole is formed in the lower end of the valve core, and a hexagonal plug cover is installed in the threaded hole.

2. a precision regulated pressure relief valve as claimed in claim 1 wherein: the two ends of the valve body are provided with external threads, the external threads are provided with hexagonal caps, joints are arranged in the hexagonal caps, and rubber gaskets are arranged between the joints and the end faces of the valve body.

3. A precision regulated pressure relief valve as claimed in claim 1 wherein: be provided with adjusting bolt, nut pad, end cap pad spare and spring in the valve gap, the cover is equipped with and marks the tablet between adjusting bolt and the nut, the nut fills up the terminal surface of hugging closely under the nut, adjusting bolt is connected with end cap pad spare, the spring butt is in the end cap lower part, the embedded pad spare that has on the diaphragm gasket, the pad is equipped with the steel gasket on the pad spare, it is fixed that construction bolt is last on the steel gasket, the lower extreme and the steel gasket looks butt of spring.

4. A precision regulated pressure relief valve as claimed in claim 1 wherein: and the inner edge and the outer edge of the left baffle and the right baffle are both provided with fillets.

5. A precision regulated pressure relief valve as claimed in claim 1 wherein: be provided with a plurality of filtration pores on the filter screen, the aperture of filtering the pore is 0.08um-010 um.

6. A precision regulated pressure relief valve as claimed in claim 1 wherein: and a plug rubber pad and a plug gasket are sleeved on the hexagonal plug cover.