CN213598618U

CN213598618U - Back pressure valve

Info

Publication number: CN213598618U
Application number: CN202022511270.2U
Authority: CN
Inventors: 范斌斌
Original assignee: Hangzhou Hangji Number Control Machine Tool Co ltd
Current assignee: Hangzhou Hangji Number Control Machine Tool Co ltd
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2021-07-02
Anticipated expiration: 2030-11-03

Abstract

The utility model provides a back pressure valve belongs to outdoor communication equipment technical field. The back pressure valve comprises a valve body assembly and a pressure control assembly, wherein the valve body assembly comprises a lower valve body and an upper valve body, the pressure control component comprises an elastic diaphragm, a first sliding block, a spring, a second sliding block, an adjusting screw rod, a stop piece and a fixed ring, the stop piece comprises a filter plate, a stop plate and a coil spring, when in use, the adjusting screw rod is rotated to drive the second slide block to slide up and down, when the water pressure is higher than the pressure of the spring, the water pressure jacks up the elastic diaphragm, water flows into the water outlet, the adjusting cap is rotated to control the water flow, when water flows to the water outlet, the stop plate is opened downwards, water flows through the stop plate, when the diaphragm is damaged, the pressure in the device is unbalanced to generate a siphoning phenomenon, liquid flows back, the stop plate is closed by the elastic force of the coil spring matched with the water flow thrust to stop the water flow from flowing back, and the device stops the water flow from flowing back through the stop plate, so that the using effect is improved.

Description

Back pressure valve

Technical Field

The utility model relates to an outdoor communication equipment technical field particularly, relates to a back pressure valve.

Background

The internal fluid of the back pressure valve can build up a certain pressure due to the valve structure, which pressure can generally be regulated. The back pressure 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.

When the back pressure valve is used for a long time, the diaphragm can be damaged, and when the diaphragm is damaged, the pressure in the back pressure valve is damaged, so that the siphon phenomenon is generated in the back pressure valve, liquid flows back, and the using effect is influenced.

SUMMERY OF THE UTILITY MODEL

In order to compensate above not enough, the utility model provides a back pressure valve aims at improving the problem that influences the result of use.

The utility model discloses a realize like this:

the utility model provides a back pressure valve, press the subassembly including valve body subassembly and accuse.

The valve body component comprises a lower valve body and an upper valve body, a water inlet is formed in one side of the lower valve body, a water outlet is formed in one side of the lower valve body, which is far away from the water inlet, the bottom of the upper valve body is fixedly connected to the top of the lower valve body, the pressure control component comprises an elastic membrane, a first sliding block, a spring, a second sliding block, an adjusting screw, a stop sheet and a fixing ring, the elastic membrane is arranged between the top of the lower valve body and the bottom of the upper valve body, the bottom of the elastic membrane covers the water inlet and the water outlet, the first sliding block is slidably connected inside the upper valve body, the first sliding block is positioned at the top of the elastic membrane, the second sliding block is slidably connected inside the upper valve body, the second sliding block is positioned above the first sliding block, and the spring is arranged between the, adjusting screw one end rotate connect in the second sliding block, adjusting screw other end screw thread run through in go up the valve body top, the stop piece includes the filter plate, hinders cut-off plate and coil spring, the filter plate sliding connection in be close to in the delivery port elastic diaphragm one end, hinder cut-off plate one end rotate connect in the filter plate bottom outside, the coil spring set up in the stop plate rotate connect in filter plate department, retainer plate threaded connection in be close to in the delivery port elastic diaphragm one end, the retainer plate is located the stop piece top.

The utility model discloses an in one embodiment, be close to in the lower valve body the cushion chamber has been seted up to water inlet one side.

In an embodiment of the present invention, a sealing gasket is disposed between the lower valve body and the upper valve body.

The utility model discloses an in one embodiment, go up valve body bottom outside threaded connection has the bolt, the thread groove has been seted up to the valve body top outside down, bolt threaded connection in the thread groove, bolt evenly distributed is in go up valve body bottom all around.

The utility model discloses an in one embodiment, the standing groove has been seted up at lower valve body top, elastic diaphragm fixed connection in the standing groove.

The utility model discloses an in the embodiment, the cavity has been seted up in the upper valve body, first sliding block with second sliding block sliding connection in the cavity.

The utility model discloses an in one embodiment, first sliding block top with second sliding block bottom all is seted up flutedly, the spring set up in two between the recess.

The utility model discloses an in one embodiment, first sliding block outside fixedly connected with sealing washer, the sealing washer outside with go up the valve body laminating.

The utility model discloses an in one embodiment, adjusting screw keeps away from second sliding block one end fixedly connected with adjusts the cap, adjust the cap rotate connect in go up the valve body outside.

In an embodiment of the present invention, the blocking plate is at least provided in number, and the blocking plate is shaped like a sector.

The utility model has the advantages that: the utility model discloses a back pressure valve that above-mentioned design obtained, during the use, it is rotatory to rotate adjusting screw, adjusting screw drives the second sliding block and slides from top to bottom, make spring change pressure when the second sliding block slides from top to bottom, when water pressure is greater than spring pressure, rivers flow into down in the valve body from the water inlet, water pressure is with the elastic diaphragm jack-up, rivers get into in the delivery port, it adjusts cap control rivers size to rotate, when rivers flow to the delivery port, stop the board and open downwards, rivers pass through, when the diaphragm is impaired, device internal pressure unbalance produces siphonage, liquid takes place the backward flow, the elasticity cooperation rivers thrust of wind spring will stop the board and close, make rivers stop the backward flow, the device is through stopping the backward flow phenomenon of rivers that stops, and the use effect is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a first view structural section of a back pressure valve according to an embodiment of the present invention;

fig. 2 is a first view structural section of a back pressure valve according to an embodiment of the present invention;

fig. 3 is an enlarged view of a in fig. 2 according to an embodiment of the present invention;

fig. 4 is an enlarged view of B in fig. 2 according to an embodiment of the present invention;

fig. 5 is a first perspective structural sectional view of a blocking sheet according to an embodiment of the present invention;

fig. 6 is a schematic view of a second view angle structure of the stop sheet according to an embodiment of the present invention.

In the figure: 100-a valve body assembly; 110-a lower valve body; 111-a buffer chamber; 112-a sealing gasket; 113-thread groove; 114-a placement groove; 120-a water inlet; 130-a water outlet; 140-an upper valve body; 141-bolts; 142-a cavity; 200-a pressure control assembly; 210-an elastic membrane; 220-a first slider; 221-grooves; 222-a sealing ring; 230-a spring; 240-second slider; 250-an adjusting screw; 251-an adjustment cap; 260-a stop piece; 261-a filter plate; 262-a cut-off prevention plate; 263-coil spring; 270-fixing ring.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the ordinary skilled in the art without creative work all belong to the scope of the present invention.

Accordingly, the following detailed description of the embodiments of the present invention, provided in the accompanying drawings, is not intended to limit the scope of the invention, which requires heat preservation, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by the ordinary skilled in the art without creative work all belong to the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1, the present invention provides a technical solution: a back pressure valve comprises a valve body assembly 100 and a pressure control assembly 200, wherein the pressure control assembly 200 is arranged inside the valve body assembly 100, and the pressure control assembly 200 plays a role in controlling the water pressure in the valve body assembly 100, so that water flow can flow according to the pressure required by the site.

Referring to fig. 2, the valve assembly 100 includes a lower valve body 110 and an upper valve body 140, a water inlet 120 is disposed on one side of the lower valve body 110, a water outlet 130 is disposed on one side of the lower valve body 110 away from the water inlet 120, a buffer chamber 111 is disposed in the lower valve body 110 near the water inlet 120, the buffer chamber 111 plays a role of instantly buffering water flow during opening the device, the bottom of the upper valve body 140 is fixedly connected to the top of the lower valve body 110, a cavity 142 is disposed in the upper valve body 140, a sealing washer 112 is disposed between the lower valve body 110 and the upper valve body 140, the sealing washer 112 can ensure internal sealing when the upper valve body 140 is connected to the lower valve body 110, a placing groove 114 is disposed on the top of the lower valve body 110, a bolt 141 is threadedly connected to the outer side of the bottom of the upper valve body 140, a threaded groove 113 is disposed on the outer side of the top of the lower valve body 110, the bolt 141 is, the lower valve body 110 and the upper valve body 140 are convenient for workers to disassemble and maintain.

Referring to fig. 2, 3, 4, 5 and 6, the pressure control assembly 200 includes an elastic membrane 210, a first sliding block 220, a spring 230, a second sliding block 240, an adjusting screw 250, a stopping piece 260 and a fixing ring 270, the elastic membrane 210 is disposed between the top of the lower valve body 110 and the bottom of the upper valve body 140, the elastic membrane 210 is fixedly connected to the placing groove 114, the elastic membrane 210 is glued to the placing groove 114, the bottom of the elastic membrane 210 covers the water inlet 120 and the water outlet 130, the first sliding block 220 is slidably connected to the cavity 142, the first sliding block 220 plays a role of supporting the spring 230 and the elastic membrane 210, so that the spring 230 can better act on the elastic membrane 210, the first sliding block 220 is located at the top of the elastic membrane 210, the second sliding block 240 is slidably connected to the cavity 142, the second sliding block 240 is located above the first sliding block 220, the top of the first sliding block 220 and the bottom of the second sliding block 240, the spring 230 is arranged between the two grooves 221, the outer side of the first sliding block 220 is fixedly connected with a sealing ring 222, the outer side of the sealing ring 222 is attached to the upper valve body 140, the sealing ring 222 plays a role of preventing water from flowing into the upper valve body 140 from the first sliding block 220 when the elastic diaphragm 210 is damaged, one end of the adjusting screw 250 is rotatably connected into the second sliding block 240, the other end of the adjusting screw 250 is threaded through the top of the upper valve body 140, one end of the adjusting screw 250, far away from the second sliding block 240, is fixedly connected with an adjusting cap 251, the adjusting cap 251 can make the adjusting screw 250 more labor-saving when rotating, the adjusting cap 251 is rotatably connected to the outer side of the upper valve body 140, the blocking plate 260 comprises a filter plate 261, a blocking plate 262 and a coil spring 263, the filter plate 261 is slidably connected into the water outlet 130, one end of the filter plate is close to the, the shape of the blocking plate 262 is a sector, the coil spring 263 is disposed at the position where the blocking plate 262 is rotatably connected to the filter plate 261, the fixing ring 270 is screwed into the water outlet 130 near one end of the elastic membrane 210, the fixing ring 270 is located above the blocking piece 260, and the fixing ring 270 functions to fix the blocking piece 260. when in use, the blocking piece 260 is firstly put into the water outlet 130, the fixing ring 270 is screwed into the water inlet 130, in this embodiment, the adjusting cap 251 is rotated, the adjusting cap 251 drives the adjusting screw 250 to rotate, because one end of the adjusting screw 250 is screwed into the top of the upper valve body 140, when the adjusting screw 250 rotates, the adjusting screw 250 drives the second sliding block 240 to slide up and down, when the second sliding block 240 slides up and down, the pressure of the spring 230 is changed, when the water pressure is greater than the pressure of the spring 230, the water flows into the lower valve body 110 from the water inlet 120, and the, when water flows to the outside of the device, the stop plate 262 is opened downwards, the water flows through, when the membrane is damaged, the pressure in the device is unbalanced, a siphoning phenomenon is generated, liquid flows back, and the stop plate 262 is closed by the elastic force of the coil spring 263 matched with the water flow thrust, so that the water flow stops flowing back.

Specifically, the operating principle of this back pressure valve: when the device is used, the adjusting cap 251 is rotated, the adjusting cap 251 drives the adjusting screw rod 250 to rotate, the adjusting screw rod 250 can drive the second sliding block 240 to slide up and down, the spring 230 changes the pressure when the second sliding block 240 slides up and down, when the water pressure is greater than the pressure of the spring 230, water flows into the lower valve body 110 from the water inlet 120, the elastic membrane 210 is jacked up by the water pressure, the water flows into the water outlet 130, the adjusting cap 251 is rotated to control the size of the water flow, when the water flows to the water outlet 130, the blocking plate 262 is opened downwards, the water flows through, when the membrane is damaged, the pressure in the device is unbalanced and siphoning occurs, liquid flows back, the blocking plate 262 is closed by the elastic force of the coil spring 263 matched with the water.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A back pressure valve is characterized by comprising

The valve body assembly (100) comprises a lower valve body (110) and an upper valve body (140), a water inlet (120) is formed in one side of the lower valve body (110), a water outlet (130) is formed in one side, far away from the water inlet (120), of the lower valve body (110), and the bottom of the upper valve body (140) is fixedly connected to the top of the lower valve body (110);

a pressure control assembly (200), wherein the pressure control assembly (200) comprises an elastic membrane (210), a first sliding block (220), a spring (230), a second sliding block (240), an adjusting screw (250), a stop piece (260) and a fixing ring (270), the elastic membrane (210) is arranged between the top of the lower valve body (110) and the bottom of the upper valve body (140), the bottom of the elastic membrane (210) covers the water inlet (120) and the water outlet (130), the first sliding block (220) is slidably connected inside the upper valve body (140), the first sliding block (220) is arranged at the top of the elastic membrane (210), the second sliding block (240) is slidably connected inside the upper valve body (140), the second sliding block (240) is arranged above the first sliding block (220), and the spring (230) is arranged between the first sliding block (220) and the second sliding block (240), adjusting screw (250) one end rotate connect in second slider (240), adjusting screw (250) other end screw thread run through in go up valve body (140) top, intercept piece (260) include filter plate (261), intercept plate (262) and wind spring (263), filter plate (261) sliding connection in be close to in delivery port (130) elastic diaphragm (210) one end, intercept plate (262) one end rotate connect in the filter plate (261) bottom outside, wind spring (263) set up in intercept plate (262) rotate connect in filter plate (261) department, retainer plate (270) threaded connection in delivery port (130) are close to in elastic diaphragm (210) one end, retainer plate (270) are located intercept piece (260) top.

2. The back pressure valve of claim 1, wherein a buffer chamber (111) is opened in the lower valve body (110) near the water inlet (120).

3. A back pressure valve according to claim 1, wherein a sealing gasket (112) is provided between the lower valve body (110) and the upper valve body (140).

4. The back pressure valve as claimed in claim 1, wherein a bolt (141) is screwed on the outer side of the bottom of the upper valve body (140), a thread groove (113) is formed on the outer side of the top of the lower valve body (110), the bolt (141) is screwed in the thread groove (113), and the bolts (141) are uniformly distributed around the bottom of the upper valve body (140).

5. The back pressure valve as claimed in claim 1, wherein a placement groove (114) is opened on the top of the lower valve body (110), and the elastic diaphragm (210) is fixedly connected in the placement groove (114).

6. A back pressure valve according to claim 1, wherein a cavity (142) is formed in the upper valve body (140), and the first sliding block (220) and the second sliding block (240) are slidably connected in the cavity (142).

7. A back pressure valve according to claim 1, wherein the top of the first sliding block (220) and the bottom of the second sliding block (240) are each provided with a groove (221), and the spring (230) is arranged between the two grooves (221).

8. The back pressure valve as claimed in claim 1, wherein a sealing ring (222) is fixedly connected to the outer side of the first sliding block (220), and the outer side of the sealing ring (222) is attached to the upper valve body (140).

9. A back pressure valve according to claim 1, characterized in that an adjusting cap (251) is fixedly connected to the end of the adjusting screw (250) remote from the second sliding block (240), the adjusting cap (251) being rotatably connected to the outside of the upper valve body (140).

10. A back pressure valve according to claim 1, wherein at least three said interception plates (262) are provided, said interception plates (262) being shaped as sectors of a circle.