CN212584264U

CN212584264U - Low-pressure-drop large-caliber piston type pressure reducing valve

Info

Publication number: CN212584264U
Application number: CN202020885709.5U
Authority: CN
Inventors: 周如伟
Original assignee: Huzhou Beide Fluid Equipment Co ltd
Current assignee: Huzhou Beide Fluid Equipment Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-02-23
Anticipated expiration: 2030-05-25

Abstract

The utility model discloses a low pressure drop heavy-calibre piston relief pressure valve, including the valve body shell, the inboard welded fastening of valve body shell installs fixed water conservancy diversion cover, the outside of fixed water conservancy diversion cover upper end evenly is provided with six water conservancy diversion holes, the inboard sliding connection of fixed water conservancy diversion cover has the slip current-limiting plate, the inboard fixed mounting of slip current-limiting plate upper end has the stop collar, the inboard of stop collar is equipped with flow control pole, the below fixed mounting of slip current-limiting plate has fixed water conservancy diversion frame, the inboard welded fastening of fixed water conservancy diversion frame has the uide bushing, the movable support rod is installed to the inboard sliding connection of uide bushing, the upper end and the uide bushing of movable support rod pass through second supporting spring and are connected, the outside sliding connection at uide bushing middle part has the pressure to adjust the. The utility model discloses a piston pressure regulating operation can effectively control the pressure range that liquid flows out, easy operation, safe in utilization.

Description

Low-pressure-drop large-caliber piston type pressure reducing valve

Technical Field

The utility model relates to a relief pressure valve technical field specifically is a low pressure drop heavy-calibre piston relief pressure valve.

Background

Along with the rapid development of social economy, urban pipelines are increasingly used, and reducing valves are increasingly used, wherein the reducing valves are valves which reduce the inlet pressure to a certain required outlet pressure through regulation and automatically keep the outlet pressure stable by means of the energy of media; from the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with changeable local resistance, namely, the flow rate and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, so that the purpose of pressure reduction is achieved, and then the fluctuation of the pressure behind the valve is balanced with the spring force by means of the regulation of a control and regulation system, so that the pressure behind the valve is kept constant within a certain error range.

However, the existing piston type pressure reducing valve is inconvenient for adjusting the liquid flow and the pressure, and the pressure range is not easy to control; therefore, the existing requirements are not met, and a low-pressure-drop large-caliber piston type pressure reducing valve is provided for the requirement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low pressure drop heavy-calibre piston relief pressure valve to solve the current piston relief pressure valve that proposes in the above-mentioned background art and be not convenient for adjust liquid flow and pressure, and the not wayward scheduling problem of pressure range.

In order to achieve the above object, the utility model provides a following technical scheme: a low-pressure-drop large-caliber piston type pressure reducing valve comprises a valve body shell, wherein a fixed guide sleeve is fixedly welded on the inner side of the valve body shell, six guide holes are uniformly formed in the outer side of the upper end of the fixed guide sleeve, a sliding flow limiting plate is connected to the inner side of the fixed guide sleeve in a sliding manner, a limiting sleeve is fixedly arranged on the inner side of the upper end of the sliding flow limiting plate, and a flow regulating rod is arranged on the inner side of the limiting sleeve;

the utility model discloses a pressure regulating device, including slip restrictor plate, fixed water conservancy diversion frame, uide bushing, movable support rod, first supporting spring is connected through the second supporting spring with the uide bushing in the inboard sliding connection of uide bushing, movable support rod's upper end, the outside sliding connection at uide bushing middle part has pressure regulating rubber, pressure regulating rubber is connected through first supporting spring with movable support rod's bottom, movable support rod's bottom is provided with the pressure regulating head, the outside fixed mounting of pressure regulating head has the bottom end cover.

Preferably, the inner side of one end of the valve body shell is provided with a liquid inlet cavity, and the inner side of the other end of the valve body shell is provided with a liquid outlet cavity.

Preferably, the upper end face of the valve body shell is fixedly provided with a top end cover, and the inner side of the upper end of the top end cover is provided with a guide sealing head through threaded connection.

Preferably, the inner side of the fixed guide sleeve is provided with a guide hole, and two ends of the guide hole are respectively communicated with one end of the liquid inlet cavity and one end of the liquid outlet cavity.

Preferably, the bottom end cover is fixed on the lower end face of the valve body shell through screw connection, the bottom end cover is connected with the valve body shell through a sealing ring, and the upper end of the pressure regulating head is connected to the inner side of the bottom end cover through threads.

Preferably, the pressure adjusting rubber is connected to the outer side of the guide sleeve in a sliding manner, a connecting ring is arranged on the lower end face of the pressure adjusting rubber, and the upper end of the first supporting spring is welded and fixed to the lower end face of the connecting ring.

Preferably, the upper end face of the sliding flow limiting plate is provided with a positioning hole, the bottom end of the limiting sleeve is connected to the inner side of the positioning hole through threads, and the bottom end of the flow adjusting rod extends to the lower end face of the limiting sleeve.

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

1. the utility model discloses a flow control pole drives the slip current-limiting plate and carries out the regulation of height in the inboard of fixed water conservancy diversion cover, makes the liquid get into the flow that fixed water conservancy diversion cover inboard through feed liquor chamber and water conservancy diversion hole and can change, and liquid promotes the pressure adjustment rubber, and first supporting spring contracts, and the pressure adjustment rubber lasts to move down and directly separates with fixed water conservancy diversion cover bottom, and liquid can flow out from the inboard of fixed water conservancy diversion cover, and then realizes the pressure regulating operation to liquid;

2. the utility model discloses a rotatory pressure adjustment head for the top of pressure adjustment head drives movable support rod and slides in the inboard of uide bushing, and then changes first supporting spring's elasticity, bearing pressure range when making pressure adjustment rubber and fixed water conservancy diversion cover separate adjusts, wholly adjust liquid flow through the flow control pole, adjust liquid pressure through the pressure adjustment head, can satisfy the liquid transport and the regulation of different pressure sizes, the control pressure value of being convenient for.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

FIG. 2 is a schematic view of the overall cross-sectional structure of the present invention;

fig. 3 is a schematic view of a partial cross-sectional structure of the fixed flow guide sleeve of the present invention;

fig. 4 is a schematic view of the local cross-section structure of the fixed diversion frame of the present invention.

In the figure: 1. a valve body housing; 2. a flow regulating rod; 3. a top end cap; 4. a guide seal head; 5. a liquid inlet cavity; 6. a liquid outlet cavity; 7. a sliding restrictor plate; 8. a limiting sleeve; 9. fixing a flow guide frame; 10. a bottom end cap; 11. a pressure regulating head; 12. a movable support rod; 13. a first support spring; 14. fixing a flow guide sleeve; 15. a pressure regulating rubber sheet; 16. a guide sleeve; 17. a second support spring; 18. and (4) flow guide holes.

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.

Referring to fig. 1 to 4, the present invention provides an embodiment: a low-pressure-drop large-caliber piston type pressure reducing valve comprises a valve body shell 1, wherein a fixed guide sleeve 14 is fixedly welded on the inner side of the valve body shell 1, six guide holes 18 are uniformly formed in the outer side of the upper end of the fixed guide sleeve 14, a sliding flow limiting plate 7 is connected to the inner side of the fixed guide sleeve 14 in a sliding mode, a limiting sleeve 8 is fixedly installed on the inner side of the upper end of the sliding flow limiting plate 7, and a flow adjusting rod 2 is arranged on the inner side of the limiting sleeve 8;

a fixed flow guide frame 9 is fixedly arranged below the sliding flow limiting plate 7, a guide sleeve 16 is fixedly welded on the inner side of the fixed flow guide frame 9, a movable support rod 12 is arranged on the inner side of the guide sleeve 16 in a sliding connection manner, the upper end of the movable support rod 12 is connected with the guide sleeve 16 through a second support spring 17, a pressure adjusting rubber sheet 15 is connected on the outer side of the middle part of the guide sleeve 16 in a sliding manner, a connecting ring is arranged on the lower end face of the pressure adjusting rubber sheet 15, the pressure adjusting rubber sheet 15 can be supported and connected through the connecting ring, the pressure adjusting rubber sheet 15 is ensured not to deform, the pressure adjusting rubber sheet 15 is connected with the bottom end of the movable support rod 12 through a first support spring 13, a pressure adjusting head 11 is arranged at the bottom end of the movable support rod 12, the upper end of the pressure adjusting head 11 is connected on the inner side of a bottom end cover 10 through threads, and then change first supporting spring 13's elasticity, the outside fixed mounting of pressure regulation head 11 has bottom end cover 10, wholly through piston pressure regulating operation, can effectively control the pressure range that liquid flows out, easy operation, it is safe in utilization.

Further, the inboard of valve body shell 1 one end is provided with feed liquor chamber 5, and the inboard of the valve body shell 1 other end is provided with out liquid chamber 6.

By adopting the technical scheme, the liquid can be guided through the liquid inlet cavity 5 and the liquid outlet cavity 6.

Further, the upper end face of the valve body shell 1 is fixedly provided with a top end cover 3, and the inner side of the upper end of the top end cover 3 is provided with a guide sealing head 4 through threaded connection.

Through adopting above-mentioned technical scheme, flow control pole 2 passes through threaded connection with sealed head 4 of direction for flow control pole 2 can carry out the regulation of height through the connection of sealed head 4 of direction.

Furthermore, the inner side of the fixed guide sleeve 14 is provided with a guide hole, and two ends of the guide hole are respectively communicated with one end of the liquid inlet cavity 5 and one end of the liquid outlet cavity 6.

By adopting the technical scheme, the pressure of the liquid flowing in the liquid inlet cavity 5 and the liquid outlet cavity 6 can be changed by the diversion of the fixed diversion sleeve 14.

Further, the bottom end cover 10 is fixed on the lower end face of the valve body shell 1 through screw connection, the bottom end cover 10 is connected with the valve body shell 1 through a sealing ring, and the upper end of the pressure regulating head 11 is connected to the inner side of the bottom end cover 10 through threads.

Through adopting above-mentioned technical scheme for the top of pressure adjustment head 11 drives movable supporting rod 12 and slides in the inboard of uide bushing 16, and then changes first supporting spring 13's elasticity.

Further, the pressure adjusting rubber sheet 15 is connected to the outer side of the guide sleeve 16 in a sliding manner, a connecting ring is arranged on the lower end face of the pressure adjusting rubber sheet 15, and the upper end of the first supporting spring 13 is welded and fixed on the lower end face of the connecting ring.

Through adopting above-mentioned technical scheme for can support and connect pressure regulation rubber 15 through the go-between, guarantee that pressure regulation rubber 15 does not warp.

Furthermore, the upper end face of the sliding current limiting plate 7 is provided with a positioning hole, the bottom end of the limiting sleeve 8 is connected to the inner side of the positioning hole through threads, and the bottom end of the flow adjusting rod 2 extends to the lower end face of the limiting sleeve 8.

Through adopting above-mentioned technical scheme for stop collar 8 carries out spacing fixed to the bottom of flow control pole 2, is convenient for guarantee flow control pole 2 and the relative fixed of slip restrictor plate 7.

The working principle is as follows: when in use, whether the functions of all parts are intact is checked, the fixed flow guide sleeve 14 is welded and fixed on the inner side of the valve body shell 1, the liquid inlet cavity 5 and the liquid outlet cavity 6 are communicated through the fixed flow guide sleeve 14, the valve body shell 1 is fixed on a liquid conveying pipeline through a screw and a sealing gasket, six flow guide holes 18 are uniformly arranged on the outer side of the fixed flow guide sleeve 14, a rotating handle arranged at the upper end of the flow adjusting rod 2 is operated, the flow adjusting rod 2 is connected with the guide sealing head 4 through a thread, so that the flow adjusting rod 2 drives the sliding flow limiting plate 7 to adjust the height of the inner side of the fixed flow guide sleeve 14, the limiting sleeve 8 is connected on the inner side of the upper end of the sliding flow limiting plate 7 through a thread, the limiting sleeve 8 limits and fixes the bottom end of the flow adjusting rod 2, the relative fixation of the flow adjusting rod 2 and, the liquid enters the inner side of the fixed guide sleeve 14 through the liquid inlet cavity 5 and the guide hole 18, the flow can be changed, the fixed guide frame 9 is welded and fixed on the inner side of the fixed guide sleeve 14, the upper end of the guide sleeve 16 is welded and fixed on the inner side of the fixed guide frame 9, the liquid enters the inner side of the fixed guide sleeve 14 and then pushes the pressure adjusting rubber 15 through the guide of the fixed guide frame 9, the pressure adjusting rubber 15 is connected with the bottom end of the movable support rod 12 through the first support spring 13, then the first support spring 13 contracts, the pressure adjusting rubber 15 continuously moves downwards until being separated from the bottom end of the fixed guide sleeve 14, the liquid can flow out of the inner side of the fixed guide sleeve 14, the pressure adjusting operation of the liquid is realized, the pressure adjusting head 11 is adjusted according to the liquid pressure of the inner side of the liquid outlet cavity 6, specifically, the pressure adjusting head 11 is connected to the inner side of the bottom end cover 10 through, through rotating the pressure regulating head 11, make the top of the pressure regulating head 11 drive the movable support rod 12 and slide in the inboard of uide bushing 16, and then change first supporting spring 13's elasticity, make pressure regulating rubber 15 adjust with fixed water conservancy diversion cover 14 bearing pressure range when separating, the upper end and the uide bushing 16 of movable support rod 12 are connected through second supporting spring 17, make second supporting spring 17 and first supporting spring 13 push down the operation to movable support rod 12 jointly, guarantee the stability of structure, wholly adjust liquid flow through flow control pole 2, adjust liquid pressure through the pressure regulating head 11, can satisfy the liquid transport and the regulation of different pressure sizes, be convenient for the control pressure value.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a low pressure drop heavy-calibre piston relief pressure valve, includes valve body shell (1), its characterized in that: a fixed guide sleeve (14) is fixedly welded on the inner side of the valve body shell (1), six guide holes (18) are uniformly formed in the outer side of the upper end of the fixed guide sleeve (14), a sliding current limiting plate (7) is connected to the inner side of the fixed guide sleeve (14) in a sliding manner, a limiting sleeve (8) is fixedly installed on the inner side of the upper end of the sliding current limiting plate (7), and a flow regulating rod (2) is arranged on the inner side of the limiting sleeve (8);

the utility model discloses a water conservancy diversion board, including the fixed water conservancy diversion frame of below fixed mounting of slip current-limiting plate (7), the inboard welded fastening of fixed water conservancy diversion frame (9) has uide bushing (16), the inboard sliding connection of uide bushing (16) installs movable support pole (12), the upper end and uide bushing (16) of movable support pole (12) are connected through second supporting spring (17), the outside sliding connection at uide bushing (16) middle part has pressure regulation rubber (15), pressure regulation rubber (15) are connected through first supporting spring (13) with the bottom of movable support pole (12), the bottom of movable support pole (12) is provided with pressure regulation head (11), the outside fixed mounting of pressure regulation head (11) has bottom end cover (10).

2. A low pressure drop large bore piston relief valve as defined in claim 1, wherein: the inboard of valve body shell (1) one end is provided with feed liquor chamber (5), the inboard of valve body shell (1) the other end is provided with out liquid chamber (6).

3. A low pressure drop large bore piston relief valve as defined in claim 1, wherein: the upper end face of the valve body shell (1) is fixedly provided with a top end cover (3), and the inner side of the upper end of the top end cover (3) is provided with a guide sealing head (4) through threaded connection.

4. A low pressure drop large bore piston relief valve as defined in claim 2, wherein: the inner side of the fixed guide sleeve (14) is provided with a guide hole, and the two ends of the guide hole are respectively communicated with one end of the liquid inlet cavity (5) and one end of the liquid outlet cavity (6).

5. A low pressure drop large bore piston relief valve as defined in claim 1, wherein: the bottom end cover (10) is fixed on the lower end face of the valve body shell (1) through screw connection, the bottom end cover (10) is connected with the valve body shell (1) through a sealing ring, and the upper end of the pressure adjusting head (11) is connected to the inner side of the bottom end cover (10) through threads.

6. A low pressure drop large bore piston relief valve as defined in claim 1, wherein: the pressure adjusting rubber sheet (15) is connected to the outer side of the guide sleeve (16) in a sliding mode, a connecting ring is arranged on the lower end face of the pressure adjusting rubber sheet (15), and the upper end of the first supporting spring (13) is welded and fixed to the lower end face of the connecting ring.

7. A low pressure drop large bore piston relief valve as defined in claim 1, wherein: the upper end face of the sliding flow limiting plate (7) is provided with a positioning hole, the bottom end of the limiting sleeve (8) is connected to the inner side of the positioning hole through threads, and the bottom end of the flow adjusting rod (2) extends to the lower end face of the limiting sleeve (8).