CN213361228U

CN213361228U - Manual air pressure regulating valve

Info

Publication number: CN213361228U
Application number: CN202021461696.5U
Authority: CN
Inventors: 马胜利; 李志英
Original assignee: Meiyin Health Technology Shanghai Co ltd
Current assignee: Meiyin Health Technology Shanghai Co ltd
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-06-04
Anticipated expiration: 2030-07-22

Abstract

The utility model discloses a manual air pressure regulating valve, including last casing, the gas passage who runs through the casing from the left hand to the right hand, insert and establish at last casing middle part, from last valve rod to running through gas passage down, the cover is established on the valve rod, the case that reciprocates along the valve rod, the lower casing of being connected with last casing cooperation, set up at last casing and lower casing junction, and the gasket of card setting on the casing down, the diaphragm that sets up below the gasket, be located the valve rod right side, keep the intercommunication with diaphragm place space, set up the bypass export on gas passage, set up in the casing down, be located the diaphragm below, and hug closely the spring of diaphragm lower surface, fixed mounting is in the casing down, the spring clamp plate that is used for supporting spring sets up in the spring clamp plate below, tightly support the spring clamp plate, and stretch out the adjustment handle of casing down, the utility model discloses simple structure, low cost and high practical value and popularization value in the technical field of air pressure regulation.

Description

Manual air pressure regulating valve

Technical Field

The utility model belongs to the technical field of the air pressure control technique and specifically relates to a manual air pressure control valve.

Background

The pressure regulating valve is also called self-operated balance valve, flow control valve, flow controller, dynamic balance valve and flow balance valve, and is a visual and simple flow regulating and controlling device.

The air pressure regulating valve is a pneumatic element for regulating air pressure and stably outputting air pressure, when the air pressure of an input end changes, the position of a diaphragm arranged in a valve body can be automatically regulated, and then compressed air is throttled and regulated to ensure that the air pressure of an output end is stable.

SUMMERY OF THE UTILITY MODEL

To the above problem, an object of the utility model is to provide a manual air pressure regulating valve, the utility model discloses a technical scheme as follows:

the utility model provides a manual air pressure regulating valve, which comprises an upper housing, run through the gas passage of last casing from the left hand right side, insert and establish at last casing middle part, from last valve rod that runs through gas passage down, the cover is established on the valve rod, the case that reciprocates along the valve rod, the lower casing of being connected with last casing cooperation, set up at last casing and inferior valve body coupling department, and the gasket of card setting on the casing down, the diaphragm that sets up below the gasket, be located the valve rod right side, keep the intercommunication with diaphragm place space, set up the bypass export on gas passage, set up in the casing down, be located the diaphragm below, and hug closely the spring of diaphragm lower surface, fixed mounting is in the casing down, a spring plate for supporting spring, the setting is in the spring plate below, tightly support spring plate, and stretch out the adjustment handle.

The front end of the upper shell is also provided with a pressure gauge, and the rear end of the upper shell is provided with a plug screw.

The valve core comprises a first rod part and a disk part which are integrally formed.

The upper shell is provided with an end face cover, the center of the end face cover is provided with a valve core mounting hole, and a first rod part of the valve core is arranged in the valve core mounting hole.

The diaphragm is provided with a central hole, and the lower end of the valve rod penetrates through the central hole.

The disc part of the valve core is adhered with rubber seal, and the outer circle of the first rod part is provided with a sealing ring. The bottom end of the lower shell is provided with a through hole, and threads are circumferentially arranged on the through hole.

The adjusting handle comprises a second rod part and a handle part which are integrally formed, and the rod part is provided with threads. The lower casing upper end, be close to last casing department and still be provided with annular diaphragm mounting groove, the diaphragm passes through the diaphragm mounting groove card to be established in the lower casing.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses set up diaphragm and spring ingeniously on casing down, realize the gas pressure of automatically regulated gas passage left and right sides effectively.

(2) The utility model discloses set up adjustment handle ingeniously, through reciprocating of handle, can control through valve body air pressure size.

The utility model discloses simple structure, convenient to use, with low costs have very high practical value and spreading value in air pressure regulation technical field.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for 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 a limitation of the scope of protection, and for those skilled in the art, other related drawings may be obtained from these drawings without inventive effort.

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a right side view of the present invention;

fig. 4 is an overall schematic diagram of the present invention.

In the drawings, the names of the parts corresponding to the reference numerals are as follows:

1-upper shell, 2-lower shell, 3-adjusting handle, 4-pressure gauge, 5-end cover, 6-plug screw, 7-gasket, 8-screw, 9-spring pressure plate, 10-spring, 11-diaphragm, 12-sealing sheet, 13-valve rod, 14-valve core, 15-sealing ring and 16-connecting pin. 141-first stem portion, 142-disk portion, 17-gas channel, 18-bypass outlet, 19-membrane mounting groove, 31-second stem portion, 32-handle portion.

Detailed Description

To make the objectives, technical solutions and advantages of the present application more clear, the present invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

A manual air pressure regulating valve comprises an upper shell 1, an air channel 17 penetrating the upper shell 1 from left to right, a valve rod 13 inserted in the middle of the upper shell 1 and penetrating the air channel 17 from top to bottom, a valve core 14 sleeved on the valve rod 13 and moving up and down along the valve rod 13, a lower shell 2 connected with the upper shell 1 in a matching way, a sealing sheet 12 arranged at the joint of the upper shell 1 and the lower shell 2 and clamped on the lower shell 2, a membrane 11 arranged below the sealing sheet 12, a bypass outlet (18) arranged at the right side of the valve rod 13 and communicated with the space where the membrane 11 is positioned and arranged on the air channel 17, a spring 10 arranged in the lower shell 2, positioned below the membrane 11 and tightly attached to the lower surface of the membrane 11, a spring pressing plate 9 fixedly arranged in the lower shell 2 and used for supporting the spring 10, and a spring pressing plate 9 arranged below the spring pressing plate 9 and tightly abutting against the spring, And extends out of the adjustment handle 3 of the lower housing 2.

The front end of the upper shell 1 is also provided with a pressure gauge 4, and the rear end of the upper shell 1 is provided with a plug screw 6.

The valve element 14 includes a first rod portion 141 and a disk portion 142 that are integrally formed.

The upper shell 1 is provided with an end face cover 5, the center of the end face cover 5 is provided with a valve core mounting hole, and the first rod part 141 of the valve core 14 is arranged in the valve core mounting hole.

The diaphragm 11 is provided with a central hole, and the lower end of the valve rod 13 penetrates through the central hole.

The disc portion 142 of the valve core 14 is adhered with a rubber seal, and the outer circle of the first rod portion 141 is provided with a sealing ring 15.

The bottom end of the lower shell 2 is provided with a through hole, and threads are circumferentially arranged on the through hole.

The adjusting handle 3 comprises a second rod part 31 and a handle part 32 which are integrally formed, and the rod part (31) is provided with threads.

Specifically, the upper end of the lower shell 2 and the position close to the upper shell 1 are further provided with an annular membrane mounting groove 19, and the membrane 11 is clamped in the lower shell 2 through the membrane mounting groove 19.

Specifically, the upper end and the lower end of the valve rod 13 are fixed in the upper housing 1 through a connecting pin 16.

Specifically, P1 is the system pressure, P2 is the working pressure, and the pressure regulating valve regulates the system pressure P1 in the compressed air system to the working pressure P2 and keeps this pressure constant without taking into account pressure fluctuations and air consumption.

In particular, the use of the adjustment handle allows working pressures p2 in the range of 0.5 to 12, 20, 35 and 50bar and a wider range of low and medium pressures.

The following is a brief description of the working principle of the present invention:

as shown in fig. 1, when the throttle speed of the air passing through the valve body from the pre-inlet pressure P1 is changed to the post-valve pressure P2, a part of the air P2 flows into the B chamber through the hole a and acts on the diaphragm, and the generated force is balanced with the reaction force of the spring 10, and the relative position of the valve element 14 in the valve body is determined to control the pre-valve pressure.

When the pre-valve pressure P1 increases, the acting force of the P2 on the diaphragm 11 through the hole A and the reacting force of the spring 10 lose balance, and when the P1> P2, the diaphragm 11 is pulled upwards, the valve core 14 is also upwards separated from the middle closed position of the valve body, the opened sectional area is increased until the pressure of the P2 is increased, the pressure of the cavity B is also increased, and the acting force on the diaphragm 11 is the same as the reacting force of the spring 10.

With the arrival of the balance, the valve core 14 and the valve body have the maximum closing area and will not increase, at the moment, the flow speed reaches the fastest speed, and thus the pressure drop of P1 is recovered to the initial value;

when the pressure P1 before the valve is reduced, the acting force of the P2 on the diaphragm 11 through the hole A and the reacting force of the spring 10 lose balance, at the moment, P1< P2 enables the diaphragm to be pressed downwards, the valve core 14 also moves downwards to be close to the closing position in the middle of the valve body, the opened sectional area is reduced until the pressure of the P2 is reduced, the pressure of the cavity B is also reduced, and the acting force on the diaphragm 11 and the reacting force of the spring 10 are the same.

With the equilibrium reached, the valve spool 14 and valve body closing area reach a minimum and will not begin to decrease, at which point the flow rate reaches a minimum, thereby restoring the pressure rise at P1 to its original level.

In the present embodiment, the terms "first", "second", and the like are used only for distinguishing the similar components, and are not to be construed as limiting the scope of protection. In the present embodiment, the terms of orientation such as "bottom", "top", "peripheral edge", "center", and the like are explained based on the drawings.

The above-mentioned embodiments are merely preferred embodiments of the present invention, and are not limitations on the protection scope of the present invention, but all the changes made by adopting the design principle of the present invention and performing non-creative work on this basis shall fall within the protection scope of the present invention.

Claims

1. A manual air pressure regulating valve is characterized by comprising an upper shell (1), a gas passage (17) penetrating through the upper shell (1) from left to right, a valve rod (13) inserted in the middle of the upper shell (1) and penetrating through the gas passage (17) from top to bottom, a valve core (14) sleeved on the valve rod (13) and moving up and down along the valve rod (13), a lower shell (2) matched and connected with the upper shell (1), a sealing sheet (12) arranged at the joint of the upper shell (1) and the lower shell (2) and clamped on the lower shell (2), a diaphragm (11) arranged below the diaphragm (12), a bypass outlet (18) arranged on the gas passage (17) and communicated with the space where the diaphragm (11) is arranged on the right side of the valve rod (13), a spring (10) arranged in the lower shell (2) and arranged below the diaphragm (11) and tightly attached to the lower surface of the diaphragm (11), the spring pressing plate (9) is fixedly installed in the lower shell (2) and used for supporting the spring (10), and the adjusting handle (3) is arranged below the spring pressing plate (9), tightly abuts against the spring pressing plate (9) and extends out of the lower shell (2).

2. A manual air pressure regulating valve according to claim 1, wherein a pressure gauge (4) is further installed at the front end of the upper casing (1), and a plug screw (6) is installed at the rear end of the upper casing (1).

3. A manual air pressure regulating valve according to claim 1, wherein said spool (14) comprises a first stem portion (141) and a disc portion (142) which are integrally formed.

4. A manual air pressure regulating valve according to claim 3, wherein said upper housing (1) is provided with a face cover (5), said face cover (5) having a valve core mounting hole centrally formed therein, said first rod portion (141) of said valve core (14) being disposed in said valve core mounting hole.

5. A manual air pressure regulating valve according to claim 1, wherein said diaphragm (11) is provided with a central hole, and a lower end of said valve stem (13) is inserted through the central hole.

6. A manual air pressure regulating valve according to claim 3, wherein the disc portion (142) of the valve core (14) is bonded with a rubber seal, and the outer circle of the first rod portion (141) is provided with a sealing ring (15).

7. A manual air pressure regulating valve according to claim 1, wherein the lower housing (2) has a through hole formed at its bottom end, and the through hole is circumferentially provided with a screw thread.

8. A manual air pressure regulating valve according to claim 1, characterized in that said regulating handle (3) comprises an integrally formed second stem portion (31) and handle portion (32), said stem portion (31) being provided with a thread.

9. A manual air pressure regulating valve according to claim 1, wherein an annular diaphragm mounting groove (19) is further provided at the upper end of the lower casing (2) near the upper casing (1), and the diaphragm (11) is clamped in the lower casing (2) through the diaphragm mounting groove (19).