Straight-through type pneumatic diaphragm regulating valve

Abstract

The utility model discloses a straight-through type pneumatic diaphragm regulating valve which comprises a valve seat, one side of the valve seat is communicated with a water inlet pipe, an installation seat is arranged in the middle of the water inlet pipe, a fixing column is fixedly installed on one side of the installation seat, a sleeve is installed at one end of the fixing column in a sliding mode, a piston is installed in the sleeve in a sliding mode, and a sleeve shell is fixedly installed at one end of the sleeve. And one side of the piston is connected with the fixing column, the other side of the piston is provided with a second spring, one end of the sleeve shell is fixedly provided with a filter screen, and the lower part of the sleeve shell is provided with an L-shaped collecting bin. When the valve is opened, water enters the valve seat, water flow impacts the filter screen at the moment, the sleeve shell pulls the second spring to move rightwards, when the valve is closed, the second spring pulls the sleeve shell and the filter screen to reset, and when the pressure of the second spring disappears, the filter screen vibrates back and forth, so that filtered impurities fall into the collecting bin below, centralized treatment of the impurities is facilitated, and the service life of the filter screen is prolonged. Meanwhile, the filter screen is prevented from being blocked to influence the filtering effect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of straight-through pneumatic diaphragm regulating valve, especially relates to a straight-through pneumatic diaphragm regulating valve. BACKGROUND

[0002] Pneumatic diaphragm regulating valve is a kind of control unit frequently used in automatic control system, usually by pneumatic actuator and valve body two parts are composed, through signal pressure system control air is discharged or is separated from diaphragm chamber, utilize the deformation of diaphragm piece to drive the position change of valve core, to realize the pressure, flow or liquid level of fluid medium regulation.

[0003] In prior art, the utility model discloses a kind of pneumatic diaphragm regulating valve of Chinese utility model patent with patent No.CN220186000U.It includes the valve stem being arranged in valve body, valve stem one end enters valve seat and is provided with valve core, the other end is provided with push rod, push rod one end enters pneumatic diaphragm chamber and is provided with mounting plate, mounting plate is provided with buffer assembly and diaphragm, pneumatic membrane chamber is composed of end cap one and end cap two, end cap one is provided with several connection components and pressure signal port.

[0004] In the above prior art, although through connection component, end cap one can be through the lifting and lowering of connecting rod, to realize the disassembly and fixation between end cap one and end cap two, when subsequent maintenance disassembly pneumatic membrane chamber is needed, it is relatively fast and convenient, improve the practicability of regulating valve, pass through pressure signal port transmission pressure signal, so that diaphragm is pressed down, so that spring transmits pressure to mounting plate and push rod, so that push rod drives valve stem and valve core to start regulating valve seat, realize the adjustment work of regulating valve, but, impurity exists in liquid in pneumatic regulating valve, after long time use, impurity can be accumulated in valve body, to affect the normal use of valve body. UTILITY MODEL CONTENTS

[0005] The utility model discloses in order to solve the technical problem that impurity exists in liquid in pneumatic regulating valve, after long time use, impurity can be accumulated in valve body, to affect the normal use of valve body, provide a kind of straight-through pneumatic diaphragm regulating valve.

[0006] The utility model discloses in order to realize the above-mentioned purpose, provide the following technical scheme: a kind of straight-through pneumatic diaphragm regulating valve, including valve seat, the side of valve seat is connected with water inlet pipe, and the middle part of water inlet pipe is provided with mounting seat,

[0007] The side of the mounting seat is fixedly installed with fixed column, one end of the fixed column is slidably installed with sleeve, the inside of the sleeve is slidably installed with piston, and one end of the sleeve is fixedly installed with sleeve shell, the side of the piston is connected with fixed column, and the other side of the piston is provided with second spring,

[0008] One end of the shell is fixedly provided with a filter screen, and the lower part of the shell is provided with an L-shaped collecting bin.

[0009] Optionally, the water inlet pipe is divided into a first water inlet pipe and a second water inlet pipe, and the first water inlet pipe and the second water inlet pipe are communicated through the mounting seat.

[0010] Optionally, mounting grooves are formed on the two sides of the mounting seat, sealing pads are arranged in the mounting grooves, first limiting holes are formed on the surfaces of the first water inlet pipe and the second water inlet pipe, and second limiting holes are formed on the upper surfaces of the mounting seat.

[0011] Optionally, a supporting seat is fixedly arranged on the upper surface of the valve seat, and the supporting seat is filled with sealing filler.

[0012] Optionally, an observation port is fixedly arranged on the upper surface of the supporting seat, a lower shell is fixedly arranged on the upper surface of the observation port, an upper shell is arranged on the upper surface of the lower shell, and a pressure inlet is formed in the top of the upper shell.

[0013] Optionally, a diaphragm is fixedly arranged in the inner cavity of the upper shell, a valve rod penetrating through the lower shell, the observation port, the sealing filler and the middle part of the valve seat is arranged in the middle part of the diaphragm, a valve core is fixedly arranged at the bottom end of the valve rod, a fixing seat is fixedly arranged on the upper part of the valve rod, and a first spring is fixedly arranged on the lower surface of the fixing seat.

[0014] Optionally, a pointer is fixedly arranged on the surface of the valve rod, and a scale is fixedly arranged on one side of the observation port.

[0015] Compared with the prior art, the straight-through type pneumatic diaphragm regulating valve has the following beneficial effects:

[0016] In the utility model, when the valve is opened, water enters the valve seat, at the moment, the water flow impacts the filter screen, so that the shell pulls the second spring to move to the right side, when the valve is closed, the second spring pulls the shell and the filter screen to reset, when the pressure of the second spring disappears, the filter screen vibrates back and forth, so that the filtered impurities fall into the collecting bin below, the impurities are conveniently concentrated and treated, the filter screen is prevented from being blocked, the filtering effect is affected, the impurities can be taken out by taking down the mounting seat, the mounting screw is convenient to disassemble, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0018] Figure 2 It is an internal structure schematic view of the utility model;

[0019] Figure 3 It is a mounting seat structure schematic view of the utility model;

[0020] Figure 4 It is the filter screen structure schematic view of the utility model;

[0021] Figure 5 It is the utility model Figure 4 The enlarged structure schematic view of A place in the middle;

[0022] In the drawing: 1, membrane chamber;2, upper shell;3, lower shell;4, pressure inlet;5, diaphragm;6, fixed sheet;7, valve rod;8, fastening screw;9, fixed seat;10, first spring;11, observation port;12, scale;13, pointer;14, support seat;15, sealing packing;16, valve core;17, valve seat;181, first water inlet pipe;182, second water inlet pipe;19, mounting seat;20, mounting groove;21, gasket;22, first limiting hole;23, second limiting hole;24, fixed column;25, sleeve;26, piston;27, second spring;28, sleeve;29, filter screen;30, collection bin;31, water outlet pipe. DETAILED DESCRIPTION

[0023] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.

[0024] Reference Figure 1 And Figure 2 A straight-through type pneumatic diaphragm regulating valve, comprising a membrane chamber 1, the membrane chamber 1 comprising an upper shell 2 and a lower shell 3, the upper shell 2 and the lower shell 3 are detachably arranged, and the top of the upper shell 2 is provided with a pressure inlet 4, and the lower surface of the lower shell 3 is fixedly installed with an observation port 11.

[0025] Reference Figure 2 The inner cavity of the upper shell 2 is fixedly installed with a diaphragm 5, the middle part of the diaphragm 5 is fixedly installed with a fixed sheet 6, the inside of the fixed sheet 6 is threadedly installed with a fastening screw 8, the lower shell 3 and the middle part of the observation port 11 are slidingly installed with a valve rod 7, the top of the valve rod 7 is connected with the fixed sheet 6 through the fastening screw 8, the upper part of the valve rod 7 is fixedly installed with a fixed seat 9, the lower surface of the fixed seat 9 is fixedly installed with a first spring 10 penetrated by the valve rod 7, and the bottom end of the first spring 10 is fixed with the upper surface of the observation port 11.

[0026] Further, the pressure is output through the pressure inlet 4, so that the diaphragm 5 is pressed down, thereby driving the valve rod 7 to move down through the fixed sheet 6, and then the valve is controlled to be closed, when the pressure disappears, the valve rod 7 is reset through the use of the first spring 10, and then the valve is opened.

[0027] Reference Figure 1 And Figure 2The valve rod 7 fixedly installed inside the observation port 11 is provided with a pointer 13, and the inner side of the observation port 11 is fixedly installed with a scale 12 matched with the pointer 13, so that the pneumatic diaphragm valve can be accurately controlled, the leakage, over-flowing or back-flowing phenomenon can be avoided, and the stability and reliability of the system can be ensured.

[0028] With reference to Figure 2 The lower surface of the observation port 11 is fixedly installed with a support seat 14, the inside of the support seat 14 is filled with a sealing filler 15, the valve rod 7 slides in the inside of the sealing filler 15, the sealing filler 15 is made of rubber material, the sealing filler 15 can fill the gap of the sealing part, effectively prevent the leakage of fluid, gas or solid particles, ensure the sealing performance of the valve, avoid the leakage problem, meanwhile, the sealing filler 15 forms a lubricating film between the valve rod 7 and the sealing filler 15, reduces the friction resistance when the valve rod 7 moves, reduces the abrasion, thereby prolongs the service life of the valve.

[0029] With reference to Figure 2 The lower surface of the support seat 14 is fixedly installed with a valve seat 17, the valve rod 7 slides in the inside of the valve seat 17, and the bottom end of the valve rod 7 is fixedly installed with a valve core 16, which is used for accurately adjusting the passing amount of fluid, realizing the opening, closing and flow regulating function of the valve.

[0030] With reference to Figure 2 And Figure 3 One side of the valve seat 17 is communicated with a water inlet pipe, and the other side of the valve seat 17 is communicated with a water outlet pipe 31, the water inlet pipe is divided into a first water inlet pipe 181 and a second water inlet pipe 182, the first water inlet pipe 181 is communicated with the valve seat 17, and the first water inlet pipe 181 is communicated with the second water inlet pipe 182 through a mounting seat 19, the mounting seat 19 is provided with mounting grooves 20 on both sides for cooperation with the first water inlet pipe 181 and the second water inlet pipe 182, the first water inlet pipe 181 and the second water inlet pipe 182 are inserted into the mounting seat 19, and the connection between the first water inlet pipe 181 and the second water inlet pipe 182 and the mounting grooves 20 is provided with sealing pads 21 for improving the sealing performance of the first water inlet pipe 181 and the second water inlet pipe 182 and the mounting grooves 20, preventing the water seepage phenomenon.

[0031] With reference to Figure 3 The end surface of the first water inlet pipe 181 and the second water inlet pipe 182 inserted into the mounting grooves 20 is provided with a first limiting hole 22 penetrating through, the upper surface of the mounting grooves 20 is provided with a second limiting hole 23 matched with the first limiting hole 22, and the first limiting hole 22 and the second limiting hole 23 are assembled through mounting screws.

[0032] With reference to Figure 5The one end of the fixed column 24 is slidably installed with a sleeve 25, and the other end of the fixed column 24 is slidably installed with a piston 26, the one end of the sleeve 25 is fixedly installed with a sleeve shell 28, and the piston 26 and the sleeve shell 28 are fixedly installed with a second spring 27 inside the sleeve 25.

[0033] Reference Figure 4 The one end of the sleeve shell 28 is fixedly installed with a filter screen 29, the lower part of the sleeve shell 28 is L-shaped, and the sleeve shell 28 and the filter screen 29 form a collection bin 30.

[0034] Further, when the valve is opened, water enters the valve seat 17, at this time, the water flow impacts the filter screen 29, so that the sleeve shell 28 pulls the second spring 27 to move to the right side, when the valve is closed, the second spring 27 pulls the sleeve shell 28 and the filter screen 29 to reset, when the pressure of the second spring 27 disappears, the filter screen 29 vibrates back and forth, so that the impurities filtered fall into the collection bin 30 below, which is convenient for centralized treatment of impurities, prevents the filter screen 29 from being blocked and affects the filtering effect, and the impurities can be taken out by removing the mounting seat 19, since the screw installation is convenient for disassembly, the work efficiency is improved.

[0035] As some terms are used in the description and claims, those skilled in the art can understand that the hardware manufacturers may use different names to refer to the same component. The description and claims of the specification do not distinguish the components by the difference in name, but by the difference in function. As mentioned throughout the specification and claims, "including" is an open term, which should be interpreted as "including but not limited to". "Approximately" means within an acceptable error range, and those skilled in the art can solve the technical problems within a certain error range and basically achieve the technical effects.

[0036] It should be noted that the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that the products or systems including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such products or systems. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the product or system including the element.

[0037] The foregoing description illustrates and describes several preferred embodiments of the present application. However, it is to be understood that the application is not limited to the precise forms described, and that changes can be made therein without departing from the scope of the present application. Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. Therefore, the specification and examples are to be considered exemplary only, with a true scope and spirit of the application being indicated by the following claims.

Claims

1. A direct gas loaded diaphragm control valve characterized by, Including valve seat (17), one side of the valve seat (17) is communicated with the water inlet pipe, the middle part of the water inlet pipe is provided with a mounting seat (19), One side of the mounting seat (19) is fixedly installed with a fixed column (24), one end of the fixed column (24) is slidably installed with a sleeve (25), the inside of the sleeve (25) is slidably installed with a piston (26), and one end of the sleeve (25) is fixedly installed with a sleeve shell (28), one side of the piston (26) is connected with the fixed column (24), and the other side of the piston (26) is provided with a second spring (27), One end of the sleeve shell (28) is fixedly installed with a filter screen (29), and the lower part of the sleeve shell (28) is provided with an L-shaped collecting bin (30).

2. A direct gas loaded diaphragm control valve according to claim 1 wherein, The water inlet pipe is divided into a first water inlet pipe (181) and a second water inlet pipe (182), the first water inlet pipe (181) and the second water inlet pipe (182) are communicated through the mounting seat (19).

3. A direct gas loaded diaphragm control valve according to claim 2 wherein, Both sides of the mounting seat (19) are provided with mounting grooves (20), the inside of the mounting groove (20) is provided with a sealing gasket (21), the surface of the first water inlet pipe (181) and the second water inlet pipe (182) is provided with a first limiting hole (22), and the upper surface of the mounting seat (19) is provided with a second limiting hole (23).

4. A direct gas loaded diaphragm control valve according to claim 3 wherein, The upper surface of the valve seat (17) is fixedly installed with a support seat (14), and the inside of the support seat (14) is filled with a sealing filler (15).

5. A direct gas loaded diaphragm control valve according to claim 4 wherein, The upper surface of the support seat (14) is fixedly installed with an observation port (11), the upper surface of the observation port (11) is fixedly installed with a lower shell (3), the upper surface of the lower shell (3) is assembled with an upper shell (2), and the top of the upper shell (2) is provided with a pressure inlet (4).

6. A direct gas loaded diaphragm control valve according to claim 5 wherein, The inner cavity of the upper shell (2) is fixedly installed with a diaphragm (5), the middle part of the diaphragm (5) is assembled with a valve rod (7) penetrating through the lower shell (3), the observation port (11), the sealing filler (15) and the middle part of the valve seat (17), the bottom end of the valve rod (7) is fixedly installed with a valve core (16), and the upper part of the valve rod (7) is fixedly installed with a fixed seat (9), and the lower surface of the fixed seat (9) is fixedly installed with a first spring (10).

7. A direct field pneumatic diaphragm control valve according to claim 6 wherein, The surface of the valve rod (7) is fixedly installed with a pointer (13), and one side of the observation port (11) is fixedly installed with a scale (12).

Images