CN115823302A

CN115823302A - Pressure-balanced forward pressure reducing valve

Info

Publication number: CN115823302A
Application number: CN202211569308.9A
Authority: CN
Inventors: 朱凯波; 邓威奇
Original assignee: Xiangtan Central Hospital
Current assignee: Xiangtan Central Hospital
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-03-21

Abstract

The invention discloses a pressure-balanced forward pressure reducing valve, and relates to the technical field of pressure reducing valves. The air pressure gauge comprises a valve body, wherein an air inlet pipe is arranged on one side of the valve body, an exhaust pipe is arranged on one side of the valve body, which is far away from the air inlet pipe, air pressure gauges are arranged in the air inlet pipe and the exhaust pipe, a control mechanism is arranged in the valve body, a vertical cylinder I is fixedly connected to the upper surface of the valve body, and a linkage mechanism is arranged in the vertical cylinder I. According to the invention, through the matching among the control mechanism, the linkage mechanism and the control mechanism, the buffer mechanism enables the pressure reducing valve not to be directly opened to the maximum when the valve is opened, and enables the pressure reducing valve to have a buffer time when the valve is opened to the maximum, so that the machine and the punching pipeline can have a buffer time, and then the problems that the machine and the punching pipeline are damaged due to overlarge pressure when the existing pressure reducing valve is screwed to the maximum, and high-pressure gas is obtained in an opened gas cylinder pipeline when the existing pressure reducing valve is screwed to the maximum are solved.

Description

Pressure-balanced forward pressure reducing valve

Technical Field

The invention belongs to the technical field of pressure reducing valves, and particularly relates to a pressure-balanced forward pressure reducing valve.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of the medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction.

However, the pressure reducing valve used for the high-pressure gas cylinder is commonly used for a transfer respirator and is also applied to the industrial and civil fields, the existing pressure reducing valve is screwed to the maximum, high-pressure gas is obtained in a pipeline of the opened gas cylinder, and the machine and the pipeline are damaged by overlarge pressure, so that the forward pressure reducing valve with balanced pressure is designed, the use habit of people is met, and the problem of occurrence of the events is reduced.

Disclosure of Invention

The invention aims to provide a pressure-balanced forward pressure reducing valve, which solves the problems in the prior art through the cooperation of a control mechanism, a linkage mechanism and the control mechanism.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a pressure balanced positive relief valve comprising a valve body: the air inlet pipe is installed on one side of the valve body, the valve body is far away from one side of the air inlet pipe, the air inlet pipe and the air pressure meter is installed in the air outlet pipe, a control mechanism is arranged in the valve body, a first vertical cylinder is fixedly connected with the upper surface of the valve body, a linkage mechanism is installed in the first vertical cylinder, a second vertical cylinder is fixedly connected with the upper surface of the first vertical cylinder, and a buffering mechanism is arranged in the second vertical cylinder.

Optionally, the control mechanism includes an inner frame, the outer surface of the inner frame is fixedly connected with the inner wall of the valve body, an air hole is formed in the inner frame, a sealing plate is arranged below the air hole, a sliding rod is fixedly connected to the upper surface of the sealing plate, and the outer surface of the sliding rod is slidably connected with the inner portion of the inner frame.

Optionally, the bottom surface of the sealing plate is fixedly connected with a first sliding plate, the outer surface of the first sliding plate is fixedly connected with a concave cylinder, and the outer surface of the concave cylinder is fixedly connected with the inner wall of the valve body.

Optionally, a first spring is fixedly connected to the bottom surface of the first sliding plate, and one end of the first spring, which is far away from the first sliding plate, is fixedly connected to the inner wall of the valve body.

Optionally, the link gear includes the flexure strip, the surface of flexure strip with the inner wall fixed connection of a vertical section of thick bamboo one, the bottom surface of flexure strip with the top of slide bar contacts, the last fixed surface of flexure strip is connected with the clamp plate, the last fixed surface of clamp plate is connected with spring two, the one end fixedly connected with slide two of spring two, the surface of slide two with the inner wall sliding connection of a vertical section of thick bamboo one.

Optionally, the buffering mechanism comprises a supporting rod, the bottom end of the supporting rod is fixedly connected with the upper surface of the second sliding plate, the supporting rod is far away from one end of the second sliding plate and is fixedly connected with an annular plate, and a tooth block is fixedly connected to the outer surface of the annular plate.

Optionally, buffer gear still includes the threaded rod, the surface of threaded rod with the upper wall of vertical cylinder two rotates to be connected, the threaded rod is located the surface threaded connection of two inside one ends of vertical cylinder has the silk braid, the bottom fixedly connected with slide three of silk braid, the through-hole has been seted up to the position that the inside of slide three is located branch.

Optionally, a third spring is sleeved on the outer surface of one end, located above the third sliding plate, of the supporting rod, one end of the third spring is fixedly connected with the bottom surface of the annular plate, and one end, far away from the annular plate, of the third spring is fixedly connected with the upper surface of the third sliding plate.

Optionally, the outer surface of the screw sleeve rotates and is connected with two shaft brackets, the outer surface of the shaft brackets and the inner wall fixed connection of the second vertical cylinder, the outer surface of the shaft brackets is connected with a sliding block in a sliding mode, the outer surface fixed connection of the sliding block is connected with a toothed plate, the toothed plate is meshed with the toothed block, the outer surface fixed connection of the toothed plate is connected with a spring four, the spring four is far away from one end of the toothed plate and the inner wall fixed connection of the second vertical cylinder, the outer surface fixed connection of the toothed plate is connected with a handle, and the outer surface of the handle and the side wall sliding connection of the second vertical cylinder are connected.

The embodiment of the invention has the following beneficial effects:

according to the embodiment of the invention, through the matching among the air inlet pipe, the exhaust pipe and the valve body, high-pressure gas can enter the valve body through the air inlet pipe, then the gas is decompressed in the valve body, and at the moment, the gas is discharged under the action of the exhaust pipe, so that the purpose of decompressing the high-pressure gas is realized.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a valve body according to an embodiment of the present invention;

FIG. 4 is a schematic front view of an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a second vertical tube according to an embodiment of the present invention;

FIG. 6 is a schematic view of the internal structure of a second vertical tube according to an embodiment of the present invention;

fig. 7 is an exploded view of a linkage mechanism according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

1. a valve body; 2. an air inlet pipe; 3. an exhaust pipe; 4. a control mechanism; 401. an inner frame; 402. air holes; 403. a sealing plate; 404. a slide bar; 405. a first sliding plate; 406. a concave cylinder; 407. a first spring; 5. a first vertical cylinder; 6. a linkage mechanism; 601. an elastic sheet; 602. pressing a plate; 603. a second spring; 604. a second sliding plate; 7. a second vertical cylinder; 8. a buffer mechanism; 801. a strut; 802. an annular plate; 803. a tooth block; 804. a threaded rod; 805. sleeving the silk with a silk sleeve; 806. a third sliding plate; 807. a through hole; 808. a third spring; 809. a pedestal; 810. a slider; 811. a toothed plate; 812. a fourth spring; 813. a handle; 9. a barometer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and components thereof have been omitted.

Referring to fig. 1 to 7, in the present embodiment, a pressure-balanced forward pressure reducing valve is provided, which includes a valve body 1: intake pipe 2 is installed to one side of valve body 1, blast pipe 3 is installed to one side that intake pipe 2 was kept away from to valve body 1, barometer 9 is all installed to intake pipe 2 and blast pipe 3's inside, the inside of valve body 1 is provided with control mechanism 4, control mechanism 4 includes interior frame 401, the surface of interior frame 401 and the inner wall fixed connection of valve body 1, gas pocket 402 has been seted up to the inside of interior frame 401, the below of gas pocket 402 is provided with closing plate 403, the last fixed surface of closing plate 403 is connected with slide bar 404, the surface of slide bar 404 and the inside sliding connection of interior frame 401, can make closing plate 403 move down when slide bar 404 removes, then can make to produce the gap between closing plate 403 and the interior frame 401, can make gas enter into the position of blast pipe 3 this moment, then realized the mesh of decompression.

The first sliding plate 405 is fixedly connected to the bottom surface of the sealing plate 403, the concave cylinder 406 is fixedly connected to the outer surface of the first sliding plate 405, the outer surface of the concave cylinder 406 is fixedly connected with the inner wall of the valve body 1, and the downward movement of the sealing plate 403 can enable the first sliding plate 405 to move downwards in the concave cylinder 406.

The bottom surface of the first sliding plate 405 is fixedly connected with a first spring 407, one end, far away from the first sliding plate 405, of the first spring 407 is fixedly connected with the inner wall of the valve body 1, the first spring 407 can move downwards when the first sliding plate 405 moves downwards, the first spring 407 can generate elastic force at the moment, and then the first sliding plate 405 is more convenient to reset under the action of the elastic force.

The upper surface of the valve body 1 is fixedly connected with a vertical cylinder I5, a linkage mechanism 6 is installed inside the vertical cylinder I5, the linkage mechanism 6 comprises an elastic sheet 601, the outer surface of the elastic sheet 601 is fixedly connected with the inner wall of the vertical cylinder I5, the bottom surface of the elastic sheet 601 is in contact with the top end of the sliding rod 404, the upper surface of the elastic sheet 601 is fixedly connected with a pressing plate 602, the upper surface of the pressing plate 602 is fixedly connected with a second spring 603, one end of the second spring 603 is fixedly connected with a second sliding plate 604, the outer surface of the second sliding plate 604 is in sliding connection with the inner wall of the vertical cylinder I5, the second spring 603 can generate elastic force when the first sliding plate 405 moves downwards, the pressing plate 602 can move downwards under the action of the second spring 603 at the moment, the second spring 603 further the second spring 603 generates elastic force, and then the sliding rod 404 can move downwards.

The upper surface of the vertical cylinder I5 is fixedly connected with a vertical cylinder II 7, the inside of the vertical cylinder II 7 is provided with a buffer mechanism 8, the buffer mechanism 8 comprises a supporting rod 801, the bottom end of the supporting rod 801 is fixedly connected with the upper surface of a sliding plate II 604, the supporting rod 801 is far away from one end of the sliding plate II 604 and fixedly connected with an annular plate 802, a tooth block 803 is fixedly connected to the outer surface of the annular plate 802, the sliding plate II 604 can move downwards when the supporting rod 801 moves downwards, and the purpose that the spring II 603 generates elasticity is achieved.

Buffer gear 8 still includes threaded rod 804, the surface of threaded rod 804 rotates with the upper wall of two 7 vertical tubes to be connected, the surface threaded connection that threaded rod 804 is located two 7 inside one ends of vertical tubes has the silk braid 805, the low side fixedly connected with slide three 806 of silk braid 805, the through-hole 807 has been seted up to the position that the inside of three 806 of slide is located branch 801, the position that the upper wall of two 7 vertical tubes is located threaded rod 804 is inlayed and is had the bearing, and the bearing cup joints on the surface of threaded rod 804, and then it is more convenient when the pivoted to make threaded rod 804, then the rotation of threaded rod 804 can make the silk braid 805 remove, and then can make three 806 removals of slide.

The outer surface of the end, located above the second sliding plate 604, of the supporting rod 801 is sleeved with a third spring 808, one end of the third spring 808 is fixedly connected with the bottom surface of the annular plate 802, one end, far away from the annular plate 802, of the third spring 808 is fixedly connected with the upper surface of the third sliding plate 806, the third spring 808 can generate elastic force by moving the third sliding plate 806, then the annular plate 802 can move downwards under the action of the elastic force, meanwhile, the number of the third springs 808 is three, and the elastic coefficient of the third springs 808 is greater than that of the second springs 603.

The outer surface of the wire sleeve 805 is rotatably connected with two shaft brackets 809, the outer surface of the shaft brackets 809 is fixedly connected with the inner wall of the second vertical cylinder 7, the outer surface of the shaft brackets 809 is slidably connected with a sliding block 810, the outer surface of the sliding block 810 is fixedly connected with a toothed plate 811, the toothed plate 811 is meshed with the toothed block 803, a bearing is embedded in the position, located on the wire sleeve 805, of the inner part of each shaft bracket 809, the bearing is sleeved on the outer surface of the wire sleeve 805, and therefore the wire sleeve 805 is more convenient to rotate.

The outer surface of pinion rack 811 is fixedly connected with spring four 812, the one end that pinion rack 811 is kept away from to spring four 812 and the inner wall fixed connection of vertical cylinder two 7, the outer surface fixed connection of pinion rack 811 has handle 813, the surface of handle 813 and the lateral wall sliding connection of vertical cylinder two 7 are under the effect of spring four 812, can make pinion rack 811 and tooth piece 803 mesh together, when pinion rack 811 and tooth piece 803 mesh together, can slow down the speed that tooth piece 803 moved downwards, and then reduced the speed that closing plate 403 moved downwards.

The working principle is as follows: when the device is used, firstly, an external air pipe is respectively connected to the air inlet pipe 2 and the air outlet pipe 3, then the threaded rod 804 is rotated, when the threaded rod 804 rotates, the threaded sleeve 805 can move, the sliding plate III 806 is driven to move downwards, then the spring III 808 can generate elastic force, the annular plate 802 and the tooth block 803 can move downwards, meanwhile, under the action of the toothed plate 811, the inclined surface of the toothed plate 811 is in contact with the inclined surface of the tooth block 803, then the tooth block 803 and the annular plate 802 can slowly move downwards under the action of friction force, meanwhile, the supporting rod 801 can move downwards when the tooth block 803 moves downwards, further, the sliding plate II 604 can move downwards, when the sliding plate II 604 moves downwards, the spring II 603 can generate elastic force, at the moment, the pressing plate 602 and the sliding plate can move downwards, then the sliding rod 404 and the sealing plate 403 are driven to move downwards, so that gas can pass through a gap between the sealing plate 403 and the inner frame 401, and the purpose of pressure reduction is achieved.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and the "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings only for the convenience of description of the present invention and the simplified description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed in a specific orientation and operation, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Claims

1. A pressure balanced positive relief valve comprising a valve body (1): its characterized in that, intake pipe (2) are installed to one side of valve body (1), valve body (1) keep away from with blast pipe (3) are installed to one side of intake pipe (2), intake pipe (2) with barometer (9) are all installed to the inside of blast pipe (3), the inside of valve body (1) is provided with control mechanism (4), the last fixed surface of valve body (1) is connected with erects a section of thick bamboo (5), the internally mounted of erecting a section of thick bamboo (5) has link gear (6), the last fixed surface of erecting a section of thick bamboo (5) is connected with erects a section of thick bamboo two (7), the inside of erecting a section of thick bamboo two (7) is provided with buffer gear (8).

2. The pressure-balanced forward pressure reducing valve according to claim 1, wherein the control mechanism (4) comprises an inner frame (401), the outer surface of the inner frame (401) is fixedly connected with the inner wall of the valve body (1), an air hole (402) is formed in the inner frame (401), a sealing plate (403) is arranged below the air hole (402), a sliding rod (404) is fixedly connected to the upper surface of the sealing plate (403), and the outer surface of the sliding rod (404) is slidably connected with the inner frame (401).

3. A pressure balanced forward pressure reducing valve according to claim 2, characterized in that a first sliding plate (405) is fixedly connected to the bottom surface of the sealing plate (403), a concave cylinder (406) is fixedly connected to the outer surface of the first sliding plate (405), and the outer surface of the concave cylinder (406) is fixedly connected to the inner wall of the valve body (1).

4. A pressure balanced forward pressure relief valve as claimed in claim 3 wherein a first spring (407) is fixedly attached to the underside of said first slide plate (405), the end of said first spring (407) remote from said first slide plate (405) being fixedly attached to the inner wall of said valve body (1).

5. The pressure-balanced forward pressure reducing valve according to claim 2, wherein the linkage mechanism (6) comprises an elastic sheet (601), the outer surface of the elastic sheet (601) is fixedly connected with the inner wall of the first vertical cylinder (5), the bottom surface of the elastic sheet (601) is in contact with the top end of the sliding rod (404), the upper surface of the elastic sheet (601) is fixedly connected with a pressing plate (602), the upper surface of the pressing plate (602) is fixedly connected with a second spring (603), one end of the second spring (603) is fixedly connected with a second sliding plate (604), and the outer surface of the second sliding plate (604) is in sliding connection with the inner wall of the first vertical cylinder (5).

6. A pressure balanced forward pressure reducing valve according to claim 5, characterised in that the damping mechanism (8) comprises a supporting rod (801), the bottom end of the supporting rod (801) is fixedly connected with the upper surface of the second sliding plate (604), the end of the supporting rod (801) far away from the second sliding plate (604) is fixedly connected with an annular plate (802), and the outer surface of the annular plate (802) is fixedly connected with a tooth block (803).

7. The pressure-balanced forward pressure reducing valve as claimed in claim 6, wherein the buffer mechanism (8) further comprises a threaded rod (804), the outer surface of the threaded rod (804) is rotatably connected with the upper wall of the second vertical cylinder (7), the outer surface of one end of the threaded rod (804) in the second vertical cylinder (7) is in threaded connection with a thread sleeve (805), the bottom end of the thread sleeve (805) is fixedly connected with a third sliding plate (806), and a through hole (807) is formed in the position, located on the supporting rod (801), in the third sliding plate (806).

8. A pressure balanced forward pressure reducing valve as claimed in claim 7, wherein the outer surface of the strut (801) at the end above the third sliding plate (806) is sleeved with a third spring (808), one end of the third spring (808) is fixedly connected with the bottom surface of the annular plate (802), and the end of the third spring (808) away from the annular plate (802) is fixedly connected with the upper surface of the third sliding plate (806).

9. The pressure-balanced forward pressure reducing valve according to claim 8, characterized in that two shaft brackets (809) are rotatably connected to the outer surface of the wire sleeve (805), the outer surface of each shaft bracket (809) is fixedly connected with the inner wall of the second vertical cylinder (7), a sliding block (810) is slidably connected to the outer surface of each shaft bracket (809), a toothed plate (811) is fixedly connected to the outer surface of each sliding block (810), the toothed plate (811) is engaged with the toothed block (803), a spring four (812) is fixedly connected to the outer surface of each toothed plate (811), one end of each spring four (812), which is far away from the toothed plate (811), is fixedly connected with the inner wall of the second vertical cylinder (7), a handle (813) is fixedly connected to the outer surface of each toothed plate (811), and the outer surface of each handle (813) is slidably connected with the side wall of the second vertical cylinder (7).