CN211738130U

CN211738130U - Adjustable back pressure valve

Info

Publication number: CN211738130U
Application number: CN201921464120.1U
Authority: CN
Inventors: 王宗臣
Original assignee: Jiavalve Technology Xianghe Co Ltd
Current assignee: Jiavalve Technology Xianghe Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-10-23
Anticipated expiration: 2029-09-05

Abstract

The utility model discloses an adjustable back pressure valve, including lower valve body, the bottom of valve body is the bifurcation structure down, and this bifurcation structure both ends are equipped with import and export respectively, and one side of export and import is provided with the passageway of round platform shape respectively, and the less one end of this passage opening is corresponding with export and import respectively, and the end cap with the structure phase-match of passageway, the end cap is provided with two, and the great one end of end cap diameter is connected with the movable rod, and the movable rod is provided with 2, and movable rod and end cap one-to-one, 2 the lateral wall that the other end of movable rod passed down the valve body respectively is inserted and is located telescopic both ends. This adjustable back pressure valve adopts structural design such as lower valve body and end cap, can carry out interim and timely shutoff to this back pressure valve to need not to close the main valve in addition, and through lower valve body and the split type structural design of last valve body, let this back pressure valve can change compression spring and diaphragm part alone, thereby it is more convenient.

Description

Adjustable back pressure valve

Technical Field

The utility model relates to the technical field of valves, specifically be adjustable back pressure valve.

Background

The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The valves are further classified into cast iron valves, cast steel valves, stainless steel valves (201, 304, 316, etc.), chrome molybdenum steel valves, chrome molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard valves, etc. according to the material.

The diaphragm, the spring etc. of back pressure valve all belong to vulnerable part, all need close the main valve when traditional back pressure valve is changed and just can go on, and is comparatively troublesome, not enough to some extent.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adjustable back pressure valve to solve the comparatively trouble problem of traditional back pressure valve change that provides in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: adjustable back pressure valve, including lower valve body, the bottom of valve body is bifurcation structure down, and this bifurcation structure both ends are equipped with import and export respectively, and one side of export and import is provided with the passageway of round platform shape respectively, and the less one end of this passageway opening is corresponding with export and import respectively, be provided with the end cap in the passageway respectively, the end cap is the round platform shape, and the end cap with the structure phase-match of passageway, the end cap is provided with two, and the great one end of end cap diameter is connected with the movable rod, and the movable rod is provided with 2, and movable rod and end cap one-to-one, 2 the lateral wall that the other end of movable rod passed down the valve body respectively inserts and locates telescopic both ends, and the sleeve is located bifurcation structure's intermediate position, and telescopic both ends rotate with the both sides lateral wall of lower valve body.

Preferably, a strip-shaped groove is formed in the outer wall of the movable rod, a strip-shaped protrusion is arranged on the inner wall of the through hole in the bottom of the lower valve body and penetrates through the through hole, and the strip-shaped protrusion is matched with the strip-shaped groove in structure.

Preferably, the cross-section of the outer wall of the sleeve is hexagonal.

Preferably, the end with the larger diameter of the plug is provided with an annular bulge, the side wall of the lower valve body corresponding to the end with the larger diameter of the plug is provided with an annular groove, the annular groove is matched with the annular bulge in structure, and the annular groove is internally provided with a rubber ring.

Preferably, the top of the lower valve body is provided with a first flanging, the top of the lower valve body is provided with an upper valve body, the bottom of the upper valve body is provided with a second flanging, and the second flanging and the first flanging are connected through a bolt.

Preferably, a diaphragm is arranged in the cavity of the upper valve body, an annular bump is arranged at the bottom of the upper valve body, and the periphery of the diaphragm is clamped between the annular bump and the top edge of the lower valve body.

Preferably, the top of diaphragm is connected with the activity dish, is provided with the plunger in the middle of the bottom of activity dish, the structure phase-match of through-hole in the middle of plunger and lower valve body, the top of activity dish is connected with compression spring's one end, and compression spring's the other end is connected with the bottom of piston, and the top of piston is connected with adjusting bolt's one end, and adjusting bolt's the other end passes the top of last valve body to adjusting bolt passes and overlaps on the part at last valve body top and be equipped with lock nut.

Preferably, a sealing cover is arranged at the top of the upper valve body.

Compared with the prior art, the beneficial effects of the utility model are that: this adjustable back pressure valve adopts structural design such as lower valve body and end cap, can carry out interim and timely shutoff to this back pressure valve to need not to close the main valve in addition, and through lower valve body and the split type structural design of last valve body, let this back pressure valve can change compression spring and diaphragm part alone, thereby it is more convenient.

Drawings

FIG. 1 is a front view of the adjustable back pressure valve of the present invention;

FIG. 2 is a top view of the upper valve body of the adjustable back pressure valve of the present invention;

FIG. 3 is a sectional view of the connecting structure of the adjustable back pressure valve movable rod and the lower valve body;

fig. 4 is a sectional view of the connection structure of the adjustable back pressure valve movable rod and the sleeve.

In the figure: 1. the valve comprises a movable rod, a sleeve, a lower valve body, a rubber ring, a plug, a piston, a compression spring, a movable disc, a diaphragm, a first flanging, an outlet, an upper valve body, a second flanging, an annular lug, a plunger, an inlet, a locking nut, an adjusting bolt, a plug, a piston, a compression spring, a piston, a compression spring, a piston, a movable disc, a diaphragm, a first flanging, an outlet, an upper valve body.

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. 1-4, the present invention provides a technical solution:

example 1: an adjustable back pressure valve comprises a lower valve body 3, wherein the bottom of the lower valve body 3 is of a branched structure, two ends of the branched structure are respectively provided with an inlet 16 and an outlet 11, one sides of the outlet 11 and the inlet 16 are respectively provided with a truncated cone-shaped channel which plays a role in connection, an inlet and outlet channel in the middle of the lower valve body 3 is respectively communicated with the inlet 16 and the outlet 11, one ends with smaller openings of the channels respectively correspond to the outlet 11 and the inlet 16, plugs 5 are respectively arranged in the channels, the plugs 5 are truncated cone-shaped and are matched with the structures of the channels, the structure enables the plugs 5 to plug the truncated cone-shaped channels, so that the circulation and the closed state can be controlled, the truncated cone-shaped structures enable the plugs 5 to gradually bear pressure in the plugging process, the plugging is more stable, the plugs 5 are provided with two plugs, and one end with larger diameter of the plugs 5 is connected with a movable, the movable rod 1 is provided with 2 movable rods 1, the movable rods 1 correspond to plugs 5 one by one, the other ends of the 2 movable rods 1 respectively penetrate through the side wall of the lower valve body 3 and are inserted at two ends of the sleeve 2, the plugs 5 are welded with the movable rods 1, the other ends of the 2 movable rods 1 respectively penetrate through the side wall of the lower valve body 3 and are inserted at two ends of the sleeve 2, the cross section of the outer wall of the sleeve 2 is hexagonal, the shape is convenient for a user to control the sleeve 2 to rotate by using a wrench, the movable rods 1 are in sliding connection with the side wall of the lower valve body 3, the outer wall of the movable rods 1 is provided with strip-shaped grooves, the inner wall of a through hole at the bottom of the lower valve body 3 is provided with strip-shaped bulges, the movable rods 1 penetrate through the through hole, and the strip-shaped bulges are matched with the strip-shaped grooves in structure, the structure can not only ensure, the two ends of the sleeve 2 are respectively rotatably connected with the side walls of the two sides of the lower valve body 3, the sleeve 2 is in threaded connection with the movable rods 1, the threaded connection structure of the 2 movable rods 1 and the sleeve 2 is opposite, an operator can push and pull the movable rods 1 by rotating the sleeve 2 and can push the movable rods 1 simultaneously in opposite or opposite directions, so that the inlet 16 and the outlet 11 can be quickly blocked, liquid circulation and backflow can be prevented, the back pressure valve can be temporarily and timely blocked, the main valve does not need to be closed additionally, the upper valve body 12 can be dismounted from the lower valve body 3 without obstruction, the compression spring 7 and the diaphragm 9 component can be independently replaced, and the plug 5 is more convenient, the end with the larger diameter is provided with an annular bulge, and the side wall of the lower valve body 3 corresponding to the end with the larger diameter is provided with an annular groove, the annular groove is matched with the annular bulge, the rubber ring 4 is arranged in the annular groove, the rubber ring 4 is fixed through gluing, the structure can strengthen and seal the sliding connection part of the movable rod 1 and the lower valve body 3 after the plug 5 is moved away from the channel in the shape of a circular truncated cone, leakage is prevented, the top of the lower valve body 3 is provided with a first flanging 10, the top of the lower valve body 3 is provided with an upper valve body 12, the bottom of the upper valve body 12 is provided with a second flanging 13, the second flanging 13 is connected with the first flanging 10 through a bolt, the structure can ensure that the connection between the lower valve body 3 and the upper valve body 12 can be kept stable and more convenient to disassemble and assemble, the cavity of the upper valve body 12 is internally provided with the diaphragm 9, the bottom of the upper valve body 12 is provided with the annular lug 14, the annular lug 14 and the upper valve body 12 are of an integral structure, the periphery of the diaphragm 9 is clamped between the annular lug 14 and the top edge of, the structure enables the periphery of the diaphragm 9 to be strengthened and compressed, the sealing performance of the periphery of the diaphragm 9 is improved, the top of the diaphragm 9 is connected with the movable disc 8, the movable disc 8 and the diaphragm 9 are fixed through gluing, the plunger 15 is arranged in the middle of the bottom of the movable disc 8, the plunger 15 is welded with the movable disc 8, the plunger 15 is matched with a through hole in the middle of the lower valve body 3 in structure, the through hole can be sealed by the plunger 15, one end of the compression spring 7 is connected with the top of the movable disc 8, the other end of the compression spring 7 is connected with the bottom of the piston 6, the compression spring 7 is welded with the movable disc 8 and the piston 6, one end of the adjusting bolt 18 is connected with the top of the piston 6, the adjusting bolt 18 is fixedly connected with the piston 6 through threads, the other end of the adjusting bolt 18 penetrates through the top of the upper valve body 12, the adjusting bolt 18 is in threaded connection with the upper, thereby can adjust compression spring 7's elasticity, and then reach the purpose of passing through pressure adjustment to liquid, and adjusting bolt 18 passes and is equipped with lock nut 17 on the part at upper valve body 12 top, lock nut 17 can compress tightly adjusting bolt 18 fixedly, makes the state after the regulation can keep fixed, and the top of upper valve body 12 is provided with closing cap 19, and closing cap 19 passes through the block with upper valve body 12 and is connected, and closing cap 19 can shelter from and protect adjusting bolt 18 and lock nut 17.

Example 2: the outer wall of annular lug 14 can set up the screw thread, through annular lug 14 and lower valve body 3 top inner wall threaded connection, can let directly fix through threaded connection between lower valve body 3 and the last valve body 12, same easy dismounting.

The working principle is as follows: when the adjustable back pressure valve is used, whether parts of the device are damaged or not firmly connected is checked, the adjustable back pressure valve is used after the parts are checked to be correct, when parts such as a compression spring 7, a diaphragm 9 and the like need to be replaced, a tool such as a wrench is used for rotating a sleeve 2, the sleeve 2 is in threaded connection with a movable rod 1, the threaded connection structure of the 2 movable rods 1 is opposite to that of the sleeve 2, an operator can push and pull the movable rod 1 by rotating the sleeve 2, the movable rods 1 are simultaneously pushed in opposite or opposite directions, when the 2 movable rods 1 move in opposite directions, a plug 5 can be pushed towards two sides, the plug 5 is matched with a truncated cone-shaped channel at the bottom of a lower valve body 3, so that an inlet 16 and an outlet 11 can be quickly plugged, liquid circulation can be prevented, backflow can be prevented, and the back pressure valve can be immediately and stably plugged, therefore, the upper valve body 12 can be dismounted from the lower valve body 3 without obstruction without closing the main valve additionally, the upper valve body 12 is connected with the lower valve body 3 through screws, the dismounting can be convenient, the compression spring 7 and the diaphragm 9 can be replaced independently after the upper valve body 12 is dismounted, and the adjustable back pressure valve is more convenient and is the working principle of the adjustable back pressure valve.

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 may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. Adjustable back pressure valve, its characterized in that: the valve comprises a lower valve body (3), wherein the bottom of the lower valve body (3) is of a branched structure, two ends of the branched structure are respectively provided with an inlet (16) and an outlet (11), one side of the outlet (11) and one side of the inlet (16) are respectively provided with a channel in a circular truncated cone shape, one end with a smaller opening of the channel corresponds to the outlet (11) and the inlet (16), a plug (5) is respectively arranged in the channel, the plug (5) is in the circular truncated cone shape, the plugs (5) are matched with the structure of the channel, 2 plugs (5) are arranged, one end with a larger diameter of the plug (5) is connected with a movable rod (1), the movable rods (1) are provided with 2 movable rods, the movable rods (1) correspond to the plugs (5) one by one, the other ends of the 2 movable rods (1) respectively penetrate through the side wall of the lower valve body (3) and are inserted into two ends of a sleeve (2), and the sleeve (2), and the two ends of the sleeve (2) are respectively and rotationally connected with the side walls of the two sides of the lower valve body (3).

2. The adjustable back pressure valve of claim 1, wherein: a strip-shaped groove is formed in the outer wall of the movable rod (1), a strip-shaped protrusion is arranged on the inner wall of the through hole in the bottom of the lower valve body (3), the movable rod (1) penetrates through the through hole, and the strip-shaped protrusion is matched with the strip-shaped groove in structure.

3. The adjustable back pressure valve of claim 1, wherein: the cross section of the outer wall of the sleeve (2) is hexagonal.

4. The adjustable back pressure valve of claim 1, wherein: the large-diameter end of the plug (5) is provided with an annular protrusion, an annular groove is formed in the side wall of the position, corresponding to the large-diameter end of the plug (5), of the lower valve body (3), the annular groove is matched with the annular protrusion in structure, and a rubber ring (4) is arranged in the annular groove.

5. The adjustable back pressure valve of claim 1, wherein: the top of the lower valve body (3) is provided with a first flanging (10), the top of the lower valve body (3) is provided with an upper valve body (12), the bottom of the upper valve body (12) is provided with a second flanging (13), and the second flanging (13) is connected with the first flanging (10) through a bolt.

6. The adjustable back pressure valve of claim 5, wherein: a diaphragm (9) is arranged in a cavity of the upper valve body (12), an annular bump (14) is arranged at the bottom of the upper valve body (12), and the periphery of the diaphragm (9) is clamped between the annular bump (14) and the top edge of the lower valve body (3).

7. The adjustable back pressure valve of claim 6, wherein: the top of diaphragm (9) is connected with activity dish (8), is provided with plunger (15) in the middle of the bottom of activity dish (8), plunger (15) and the structure phase-match of through-hole in the middle of lower valve body (3), the top of activity dish (8) is connected with the one end of compression spring (7), and the other end of compression spring (7) is connected with the bottom of piston (6), and the top of piston (6) is connected with the one end of adjusting bolt (18), and the other end of adjusting bolt (18) passes the top of last valve body (12) to adjusting bolt (18) are passed and are gone up the cover and are equipped with lock nut (17) in the part at valve body (12) top.

8. The adjustable back pressure valve of claim 5, wherein: and a sealing cover (19) is arranged at the top of the upper valve body (12).