Gas control valve for oxygen production equipment

Abstract

The utility model relates to the technical field of oxygen production equipment, and discloses a gas control valve for oxygen production equipment, which comprises a valve body, one end of the valve body is an air inlet pipe, the other end of the valve body is an air outlet pipe, an air vent is arranged between the air inlet pipe and the air outlet pipe, and the valve body is communicated with a switch piece. A valve element of the switch piece can be sealed with the ventilation opening, a flow control piece is arranged in the air inlet pipe, the output end of the flow control piece is communicated with the switch piece, and the flow control piece can drive the valve element to move to change the opening degree between the valve element and the ventilation opening. The variable-frequency reaction control device solves the problems that an impeller and gear linkage variable-frequency reaction control device is complex in structure and not easy to install and maintain, airflow thrust is converted into mechanical movement and then converted into aerodynamic force through the flow control piece so as to drive the valve element to move and change the opening degree of the ventilation opening, and therefore the overall structure is simplified, and the cost is reduced. And the self-adaptive opening adjustment can be realized according to the flow.

Description

TECHNICAL FIELD

[0001] The utility model relates to oxygen -making equipment technical field more specifically, it relates to a gas control valve for oxygen -making equipment. BACKGROUND

[0002] Oxygen -making equipment refers to a kind of complete equipment for producing nitrogen and argon, neon, helium, krypton, xenon and mixed gas, in general condition, air separation equipment is used to produce oxygen, pressure swing adsorption oxygen generator is mainly composed of blower, vacuum pump, switching valve, adsorber and oxygen balance tank, under the condition of atmospheric pressure, nitrogen, carbon dioxide and water and other impurities in air are selectively adsorbed using VPSA special molecular sieve, molecular sieve is desorbed under vacuum condition, thereby circulating and obtaining high-purity oxygen.

[0003] The utility model discloses a passive flow control valve for frequency conversion oxygen making system sets up frequency reaction control device, the rotational speed of flow control impeller, thereby changes the height of stopper, realizes valve port opening degree self -adjusting, replaces the function of spring, can avoid spring vibration frequently and fatigue fracture, but its structure is complex, more parts, required installation space is larger. UTILITY MODEL CONTENT

[0004] In view of the deficiencies existing in the prior art, the utility model aims at providing a non-spring control gas control valve for oxygen making equipment with simpler structure.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A kind of gas control valve for oxygen making equipment, including valve body, one end of the valve body is air inlet pipe, the other end of the valve body is air outlet pipe, air inlet pipe and air outlet pipe are provided with by air vent, the valve body is communicated with switch piece, the valve core of the switch piece can be sealed with air vent, flow control piece is provided in the air inlet pipe, the output end of the flow control piece is communicated with switch piece, the flow control piece can drive valve core to move, change the opening degree between valve core and air vent.

[0007] The utility model is further provided as follows: the switch piece includes connecting barrel one, the connecting barrel one is communicated with air inlet pipe and air outlet pipe, the valve core slides in connecting barrel one, the flow control piece includes connecting barrel two, the connecting barrel two is communicated with the side of connecting barrel one away from air vent, the output end of the flow control piece is piston, the piston is slidably connected with the inner wall of connecting barrel two.

[0008] The utility model further sets up: the flow control piece includes the push board, the push board rotation is installed in the inside of air inlet pipe, the push board is perpendicular to the air inlet pipe setting, the push board extends the air inlet pipe, and is connected with the connecting rod, the connecting rod is slidably connected with the sliding sleeve, the piston extends one end of connecting barrel no.

[0009] The utility model further sets up: the push board includes the board body, the board body is semicircle, the diameter of board body is equal with the inside diameter of air inlet pipe, the round edge of board body can be with air inlet pipe inner wall is pasted, the straight line edge both ends of board body are provided with the mounting shaft, the mounting shaft sets up in the middle position of air inlet pipe, the mounting shaft is passed through the air inlet pipe, the mounting shaft is connected with the connecting rod.

[0010] The utility model further sets up: the piston is sealed with the inner wall of connecting barrel no.

[0011] The utility model has the advantages of:

[0012] The utility model discloses a valve, including valve body, air inlet pipe, air outlet pipe, air vent, switch piece, flow control piece, the valve body is connected with the air inlet pipe, and the air outlet pipe is connected with the air vent, the switch piece is connected with the valve body, and the flow control piece is connected with the valve body, and the valve core is sealed with the connecting barrel no. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is an embodiment structure schematic view of the utility model;

[0014] Figure 2 It is along Figure 1 The A-A line section view shown in the figure;

[0015] Figure 3 It is along Figure 1 The B-B line section view shown in the figure;

[0016] Figure: 1, valve body;11, air inlet pipe;12, air outlet pipe;13, air vent;2, switch piece;21, connecting barrel no.;22, valve core;23, slide rod;3, flow control piece;31, connecting barrel no.;32, piston;33, sliding sleeve;34, push board;341, board body;342, mounting shaft;35, connecting rod. DETAILED DESCRIPTION

[0017] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0018] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those skilled in the art to which the technology described in the present application belongs.

[0019] In the present application, unless otherwise stated, the orientation such as "up, down" is generally with respect to the direction shown in the drawings, or with respect to the vertical, perpendicular or gravity direction; similarly, for the convenience of understanding and description, "left, right" is generally with respect to the left and right shown in the drawings; "inner, outer" refers to the inner and outer of the contour of each component itself, but the above orientation words are not used to limit the present application.

[0020] Please refer to Figures 1-3 The present application provides the following technical solutions:

[0021] A kind of gas control valve for oxygen production equipment, including valve body 1, one end of valve body 1 is air inlet pipe 11, the other end of valve body 1 is air outlet pipe 12, air inlet pipe 11 and air outlet pipe 12 between being provided by air vent 13, valve body 1 is communicated with switch piece 2, the valve core 22 of switch piece 2 can be sealed with air vent 13, air inlet pipe 11 is provided with flow control piece 3, the output end of flow control piece 3 is communicated with switch piece 2, flow control piece 3 is controlled by the gas flow in air inlet pipe 11, can drive valve core 22 moves, changes the opening degree between valve core 22 and air vent 13, to increase the opening degree when flow increases, reduce the opening degree when flow is small, realize the self-adapting regulation of outlet flow.

[0022] Switch piece 2 includes connecting barrel one 21, connecting barrel one 21 and air inlet pipe 11 and air outlet pipe 12 are all communicated, valve core 22 slides in connecting barrel one 21, flow control piece 3 includes connecting barrel two 31, connecting barrel two 31 and the side of connecting barrel one 21 away from air vent 13 are communicated, the output end of flow control piece 3 is piston 32, piston 32 and the inner wall of connecting barrel two 31 are slidably connected, piston 32 and the inner wall of connecting barrel two 31 are sealed, the outer wall of valve core 22 and the inner wall of connecting barrel one 21 are sealed;

[0023] That is, connecting barrel one 21 and connecting barrel two 31 are communicated, and a sealing structure is formed between piston 32 and valve core 22, when piston 32 moves to connecting barrel one 21, valve core 22 is moved to air vent 13 by the gas in the sealing structure, and vice versa, the opening degree of air vent 13 can be adjusted by changing the position of piston 32.

[0024] The flow control member 3 comprises a push plate 34, the push plate 34 comprises a plate body 341, the plate body 341 is semicircular, the diameter of the plate body 341 is equal to the inner diameter of the air inlet pipe 11, the plate body 341 is vertically arranged inside the air inlet pipe 11, and the circular edge of the plate body 341 can be attached to the inner wall of the air inlet pipe 11; the straight edges of the plate body 341 are provided with mounting shafts 342 at both ends, the mounting shafts 342 are arranged at the middle position of the air inlet pipe 11, the mounting shafts 342 penetrate through the air inlet pipe 11, the mounting shafts 342 are rotationally connected with the air inlet pipe 11, and sealing members are arranged between the mounting shafts 342 and the air inlet pipe 11;

[0025] The mounting shafts 342 extend out of one end of the air inlet pipe 11 and are connected with connecting rods 35, the connecting rods 35 are slidingly connected with sliding sleeves 33 at the ends away from the air inlet pipe 11, and the piston 32 is fixed to the sliding sleeves 33 at one end extending out of the connecting cylinder two 31;

[0026] When the air flow in the air inlet pipe 11 increases, the plate body 341 is pushed, the angle of the circular edge of the plate body 341 rotating to the right side increases, the plate body 341 drives the connecting rods 35 to swing to the left side through the mounting shafts 342, the connecting rods 35 drive the piston 32 to move to the left side through the sliding sleeves 33, so that the valve core 22 is driven to move upwards, and the opening degree of the air vent 13 increases;

[0027] Conversely, when the air flow in the air inlet pipe 11 decreases, the air flow pushing force on the plate body 341 decreases, the plate body 341 falls, and the piston 32 is pushed to the right side through the connecting rods 35, so that the valve core 22 is driven to move to the direction of the air vent 13, and the opening degree of the air vent 13 decreases.

[0028] The inner wall of the connecting cylinder one 21 is provided with a plurality of sliding rods 23, the valve core 22 slides on the sliding rods 23, so that the stability of the valve core 22 during movement can be ensured, and leakage can be avoided.

[0029] Specifically, the switch member 2 and the flow control member 3 are arranged, the switch member 2 is connected with the valve body 1 through the connecting cylinder one 21, the valve core 22 is sealingly and slidingly connected with the connecting cylinder one 21, the connecting cylinder two 31 of the flow control member 3 is connected with the connecting cylinder one 21, the piston 32 is sealingly and slidingly connected in the connecting cylinder two 31, that is, the piston 32 and the valve core 22 form a sealing structure between the two connecting cylinders, the push plate 34 of the flow control member 3 is arranged in the air inlet pipe 11, the mounting shafts 342 of the push plate 34 extend out of the air inlet pipe 11 and are connected with the piston 32, when the flow in the air inlet pipe 11 changes, the rotation angle of the push plate 34 changes, the piston 32 is driven to move through the connecting rods 35, so that the valve core 22 is driven to slide, the opening degree of the air vent is changed, automatic flow regulation is realized, the structure is simple, no elastic member such as a spring is needed, the elastic member is not easy to be damaged, and the service life is longer.

[0030] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

[0031] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0032] It should be noted that the terms "first", "second", and the like, used in the specification and the claims of the application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein.

[0033] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gas control valve for an oxygen generating apparatus comprising a valve body (1), characterized in that: One end of the valve body (1) is an air inlet pipe (11), the other end of the valve body (1) is an air outlet pipe (12), the air inlet pipe (11) and the air outlet pipe (12) are provided with an air vent (13), the valve body (1) is communicated with a switch piece (2), the valve core (22) of the switch piece (2) can be sealed with the air vent (13), the air inlet pipe (11) is provided with a flow control piece (3), the output end of the flow control piece (3) is communicated with the switch piece (2), the flow control piece (3) can drive the valve core (22) to move and change the opening degree between the valve core (22) and the air vent (13).

2. The gas control valve for an oxygen generating apparatus according to claim 1, characterized by: The switch piece (2) includes a connecting barrel one (21), the connecting barrel one (21) is communicated with the air inlet pipe (11) and the air outlet pipe (12), the valve core (22) slides in the connecting barrel one (21), the flow control piece (3) includes a connecting barrel two (31), the connecting barrel two (31) is communicated with the side of the connecting barrel one (21) away from the air vent (13), the output end of the flow control piece (3) is a piston (32), the piston (32) is slidingly connected with the inner wall of the connecting barrel two (31).

3. The gas control valve for an oxygen generating apparatus according to claim 2, characterized by: The flow control piece (3) includes a push plate (34), the push plate (34) is rotatably installed in the air inlet pipe (11), the push plate (34) is perpendicular to the air inlet pipe (11), the push plate (34) extends out of the air inlet pipe (11) and is connected with a connecting rod (35), the connecting rod (35) is slidingly connected with a sliding sleeve (33), one end of the piston (32) extending out of the connecting barrel two (31) is fixed with the sliding sleeve (33).

4. The gas control valve for an oxygen generating apparatus according to claim 3, characterized by: The push plate (34) includes a plate body (341), the plate body (341) is semicircular, the diameter of the plate body (341) is equal to the inner diameter of the air inlet pipe (11), the circular edge of the plate body (341) can be attached to the inner wall of the air inlet pipe (11), the straight edges of the plate body (341) are provided with mounting shafts (342) at both ends, the mounting shafts (342) are arranged at the middle position of the air inlet pipe (11), the mounting shafts (342) penetrate the air inlet pipe (11), and the mounting shafts (342) are connected with the connecting rod (35).

5. The gas control valve for an oxygen generating apparatus according to claim 4, wherein: The piston (32) is sealed with the inner wall of the connecting barrel two (31), the inner wall of the connecting barrel one (21) is provided with a plurality of sliding rods (23), the valve core (22) slides on the sliding rods (23), and the outer wall of the valve core (22) is sealed with the inner wall of the connecting barrel one (21).

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