Silent type gas distribution valve

Abstract

The utility model relates to a silent type gas distribution valve which comprises a valve body assembly, a first pilot piece and a second pilot piece, the valve body assembly is provided with a gas inlet channel, a first oxygen production channel, a second oxygen production channel, an exhaust channel and a pilot channel, and the gas inlet channel is communicated with the pilot channel. The mute type gas distribution valve comprises a first diaphragm assembly and a second diaphragm assembly, the pilot channel is communicated with one end of the first diaphragm assembly and one end of the second diaphragm assembly, and the first diaphragm assembly and the second diaphragm assembly operate alternately. Channel openings of the first oxygen generation channel, the second oxygen generation channel and the exhaust channel are distributed in the first surface of the valve body assembly, a channel opening of the air inlet channel is distributed in the second surface of the valve body assembly, and the first surface and the second surface are distributed on the valve body assembly in a back-to-back mode. The mute type gas distribution valve is mounted through a plane, so that the first oxygen generation channel, the second oxygen generation channel and the exhaust channel can be mounted on oxygen generator equipment in an attached manner, and the assembly is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a distribution valve, and more particularly to a silent gas distribution valve. Background Art

[0002] The oxygen generator adopts a dual-channel oxygen production structure to form continuous oxygen production. The gas distribution valve can send air into the molecular sieve of the oxygen generator to separate oxygen and other gases. For example, Chinese publication CN215980938U discloses an electromagnetic gas distribution valve and an oxygen generator.

[0003] However, the existing electromagnetic gas distribution valves are expensive and occupy a large assembly space, which makes them difficult to use in some small application scenarios or equipment with limited installation space. In addition, the pipeline connection of the distribution valve is set laterally, and the pipeline needs to be bent and connected, which makes the pipeline connection difficult. Therefore, improvements are needed. Utility Model Content

[0004] In order to overcome the problems existing in the related art, an embodiment of the utility model provides a silent gas distribution valve.

[0005] According to a first aspect of an embodiment of the utility model, a silent gas distribution valve is provided, the silent gas distribution valve comprising a valve body assembly, a first pilot member and a second pilot member installed on the valve body assembly, the valve body assembly is provided with an air intake channel, a first oxygen production channel, a second oxygen production channel, an exhaust channel and a pilot channel, the air intake channel and the pilot channel are connected, the silent gas distribution valve comprises a first diaphragm assembly and a second diaphragm assembly movable on the valve body assembly, the pilot channel is respectively connected to one end of the first diaphragm assembly and one end of the second diaphragm assembly, the first diaphragm assembly controls the on-off of the air intake channel and the first oxygen production channel through the first pilot member, the second diaphragm assembly controls the on-off of the air intake channel and the second oxygen production channel through the second pilot member, and the first diaphragm assembly and the second diaphragm assembly operate alternately;

[0006] The channel openings of the first oxygen production channel, the second oxygen production channel and the exhaust channel are distributed on the first surface of the valve body assembly, the channel opening of the air intake channel is distributed on the second surface of the valve body assembly, and the first surface and the second surface are distributed on the valve body assembly back to back.

[0007] In one embodiment, a partially protruding mounting boss is provided on the first surface of the valve body assembly, and the channel openings of the first oxygen production channel, the second oxygen production channel and the exhaust channel are distributed on the mounting boss.

[0008] In one embodiment, the first diaphragm assembly includes a valve stem, a hollow diaphragm and an elastic diaphragm respectively installed at both ends of the valve stem, the valve body assembly is provided with an air guide channel, the valve stem is inserted into the air guide channel, the air intake channel is connected to the first oxygen production channel through the air guide channel, the exhaust channel is connected to the first oxygen production channel through the air guide channel, the hollow diaphragm movably opens and closes one end opening of the air guide channel to control the on-off of the air intake channel and the air guide channel, and the elastic diaphragm movably opens and closes the other end opening of the air guide channel to control the on-off of the exhaust channel and the air guide channel.

[0009] In one embodiment, the valve body assembly includes a valve body and a pilot valve plate connected to the valve body, the valve body and the pilot valve plate are closed to clamp the elastic diaphragm, the pilot valve plate and the elastic diaphragm form a pilot cavity, and the pilot channel is arranged on the pilot valve plate and is connected to the pilot cavity.

[0010] In one embodiment, the pilot valve plate is provided with an arcuate groove and an edge rib located at the edge of the arcuate groove, the edge rib is crimped to the edge of the elastic diaphragm, and the pilot cavity is formed between the arcuate groove and the elastic diaphragm.

[0011] In one embodiment, the valve body is provided with an exhaust groove and an exhaust rib protruding from the exhaust groove, the exhaust rib is arranged around the opening of the air guide channel, the exhaust channel and the exhaust groove are connected, and the elastic diaphragm separates the first oxygen production channel and the exhaust channel when abutting against the exhaust rib.

[0012] In one embodiment, the valve body assembly further includes a front valve plate mounted on the valve body, the front valve plate being provided with an air intake groove, the hollow diaphragm being provided with an air guide hole connecting the air intake groove and the air intake channel, the valve body being provided with an air intake rib surrounding the air guide channel, and the hollow diaphragm separating the first oxygen production channel and the air intake channel when abutting against the air intake rib.

[0013] In one embodiment, the structure of the first diaphragm assembly is the same as that of the second diaphragm assembly, and the structure of the first diaphragm assembly and the second diaphragm assembly are respectively located on both sides of the air inlet passage.

[0014] In one embodiment, mounting bosses and mounting holes penetrating the mounting bosses are provided on both sides of the valve body assembly.

[0015] In one embodiment, the valve body assembly is provided with an atomization port communicated with the air inlet passage.

[0016] The technical solution provided by the embodiment of the utility model can include the following beneficial effects: the silent gas distribution valve is installed in a plane so that the first oxygen production channel, the second oxygen production channel and the exhaust channel can be installed in a close fit to the oxygen generator equipment, which is convenient for assembly. The air intake channel is arranged at the top of the valve body assembly, which can improve the convenience of assembly, and the first pilot and the second pilot are arranged on one side of the valve body assembly, thereby improving the rationality of the spatial layout and the convenience of pipeline connection.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0019] Figure 1 is a schematic structural diagram showing a silent gas distribution valve according to an exemplary embodiment.

[0020] Figure 2 is a bottom view schematically showing a silent gas distribution valve according to an exemplary embodiment.

[0021] Figure 3 is a schematic diagram showing an explosion structure of a silent gas distribution valve according to an exemplary embodiment.

[0022] Figure 4 is a schematic cross-sectional structure diagram showing a silent gas distribution valve according to an exemplary embodiment.

[0023] Figure 5 is a schematic structural diagram showing a valve body according to an exemplary embodiment.

[0024] Figure 6 is a schematic structural diagram showing a first diaphragm assembly according to an exemplary embodiment.

[0025] In the figure, the valve body assembly 10; the air intake channel 11; the exhaust channel 12; the first oxygen production channel 13; the second oxygen production channel 14; the valve body 15; the air guide channel 151; the air intake rib 152; the exhaust rib 153; the mounting boss 154; the mounting boss 155; the mounting hole 156; the exhaust groove 157; the pilot valve plate 16; the arc surface groove 161; the edge pressure rib 162; the pilot channel 163; the front valve plate 17; the atomization port 18; the first pilot member 20; the second pilot member 30; the valve stem 31; the elastic diaphragm 32; the hollow diaphragm 33; the air guide hole 331; the first diaphragm assembly 40; the second diaphragm assembly 50. DETAILED DESCRIPTION

[0026] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figures 1 to 4 As shown, the utility model provides a silent gas distribution valve, which includes a valve body assembly 10, a first pilot member 20 and a second pilot member 30 installed on the valve body assembly 10, and the first pilot member 20 and the second pilot member 30 are installed on one side of the valve body assembly 10. The first pilot member 20 and the second pilot member 30 are configured as electromagnetic elements to control the opening and closing of the pilot channel 163 in the gas distribution valve.

[0030] The silent gas distribution valve includes a first diaphragm assembly 40 and a second diaphragm assembly 50 movable on the valve body assembly 10, and the pilot channel 163 is connected to one end of the first diaphragm assembly 40 and one end of the second diaphragm assembly 50 respectively. The first diaphragm assembly 40 controls the opening and closing of the air intake channel 11 and the first oxygen production channel 13 through the first pilot 20, and the second diaphragm assembly 50 controls the opening and closing of the air intake channel 11 and the second oxygen production channel 14 through the second pilot 30. The first diaphragm assembly 40 and the second diaphragm assembly 50 operate alternately. Specifically, the first diaphragm assembly 40 moves to connect the air intake channel 11 and the first oxygen production channel 13, and the first oxygen production channel 13 and the exhaust channel 12 are disconnected, and then the second diaphragm assembly 50 controls the disconnection of the air intake channel 11 and the second oxygen production channel 14 through the second pilot 30, and the exhaust channel 12 and the second oxygen production channel 14 are connected. On the contrary, the second diaphragm assembly 50 moves to connect the air intake channel 11 and the second oxygen production channel 14, and the second oxygen production channel 14 and the exhaust channel 12 are disconnected, then the first diaphragm assembly 40 controls the disconnection of the air intake channel 11 and the first oxygen production channel 13 through the first pilot 20, and the exhaust channel 12 is connected to the first oxygen production channel 13. The air intake channel 11 constitutes continuous air intake, the exhaust channel 12 constitutes continuous exhaust, and the first oxygen production channel 13 and the second oxygen production channel 14 alternately supply air.

[0031] The channel openings of the first oxygen production channel 13, the second oxygen production channel 14 and the exhaust channel 12 are distributed on the first surface of the valve body assembly 10, the channel opening of the air intake channel 11 is distributed on the second surface of the valve body assembly 10, and the first surface and the second surface are distributed in the valve body assembly 10 in a back-to-back manner. The valve body assembly 10 is provided with an air intake channel 11, a first oxygen production channel 13, a second oxygen production channel 14, an exhaust channel 12 and a pilot channel 163, and the air intake channel 11 is connected to the pilot channel 163. The exhaust channel 12 is distributed between the first oxygen production channel 13 and the second oxygen production channel 14, and the three are distributed in a triangular shape to form a spaced arrangement structure.

[0032] The silent gas distribution valve is installed in a plane so that the first oxygen production channel 13, the second oxygen production channel 14 and the exhaust channel 12 can be fitted to the oxygen generator equipment, which is convenient for assembly. The air inlet channel 11 is arranged at the top of the valve body assembly 10, which can improve the convenience of assembly. The first pilot 20 and the second pilot 30 are arranged on one side of the valve body assembly 10, thereby improving the rationality of the spatial layout and the convenience of pipeline connection.

[0033] In one embodiment, the first surface of the valve body assembly 10 is provided with a partially protruding mounting boss 154, and the channel openings of the first oxygen production channel 13, the second oxygen production channel 14 and the exhaust channel 12 are distributed on the mounting boss 154. The mounting boss 154 protrudes from the first surface, thereby forming a partially protruding structure, reducing the fitting surface of the connection part between the valve body assembly 10 and the oxygen concentrator, thereby improving the sealing effect. Preferably, the mounting boss 154 is a symmetrical structure, and the mounting boss 154 includes a central area and a support foot area extending laterally from the central area, the exhaust channel 12 is distributed in the central area, and the first oxygen production channel 13 and the second oxygen production channel 14 are respectively located in the two support foot areas.

[0034] In one embodiment, the structure of the first diaphragm assembly 40 is the same as that of the second diaphragm assembly 50, and the structure of the first diaphragm assembly 40 and the second diaphragm assembly 50 are respectively located on both sides of the air inlet channel 11. The structure of the first diaphragm assembly 40 and the second diaphragm assembly 50 are operated alternately to form gas distribution. The following is an exemplary description of the matching assembly structure of the first diaphragm assembly 40 and the valve body assembly 10, and the second diaphragm assembly 50 can be understood by reference, and will not be repeated here.

[0035] In one embodiment, the first diaphragm assembly 40 includes a valve stem 31, a hollow diaphragm 33 and an elastic diaphragm 32 respectively mounted at both ends of the valve stem 31, the hollow diaphragm 33 and the elastic diaphragm 32 are respectively located at both ends of the valve stem 31, and the hollow diaphragm 33 and the elastic diaphragm 32 have elastic deformation effects. Preferably, the hollow diaphragm 33 and the elastic diaphragm 32 are made of rubber material, wherein the hollow diaphragm 33 is provided with a through hole to make the air pressure on both sides of the hollow diaphragm 33 stable. The elastic diaphragm 32 is a circular thin sheet structure to block the space on both sides of the connection part of the valve body assembly 10.

[0036] The valve body assembly 10 is provided with an air guide channel 151, the valve stem 31 is inserted through the air guide channel 151, and the hollow diaphragm 33 and the elastic diaphragm 32 are respectively located at both ends of the air guide channel 151. Among them, the air intake channel 11 is connected to the first oxygen production channel 13 through the air guide channel 151, and the exhaust channel 12 is connected to the first oxygen production channel 13 through the air guide channel 151. The exhaust channel 12 and the air intake channel 11 are respectively connected to both ends of the air guide channel 151, and the first oxygen production channel 13 is connected to the middle of the air guide channel 151.

[0037] like Figures 3 to 6As shown, the hollow diaphragm 33 movably opens and closes one end opening of the air guide channel 151, which is used to control the opening and closing of the air intake channel 11 and the air guide channel 151, and the elastic diaphragm 32 movably opens and closes the other end opening of the air guide channel 151, which is used to control the opening and closing of the exhaust channel 12 and the air guide channel 151. The air intake channel 11 is connected to the pilot channel 163. When the first pilot member 20 connects the pilot channel 163 and the air intake channel 11, the air pressure on one side of the elastic diaphragm 32 increases, pushing the elastic diaphragm 32 and the valve stem 31 to move toward the hollow diaphragm 33 until the elastic diaphragm 32 closes the air guide channel 151, thereby separating the exhaust channel 12 and the first oxygen production channel 13, and the air intake channel 11 is connected to the first oxygen production channel 13. When the first pilot component 20 separates the pilot channel 163 from the air intake channel 11, the air pressure on one side of the elastic diaphragm 32 is released, and the hollow diaphragm 33 pushes the valve stem 31 to move toward the elastic diaphragm 32 until the hollow diaphragm 33 closes the air guide channel 151, thereby separating the air intake channel 11 from the first oxygen production channel 13, and connecting the exhaust channel 12 to the first oxygen production channel 13, so that other gases after filtration by the molecular sieve are discharged through the exhaust channel 12.

[0038] The hollow diaphragm 33 and the elastic diaphragm 32 move in coordination, and a cavity adapted to the hollow diaphragm 33 and the elastic diaphragm 32 is provided in the valve body assembly 10. The valve body assembly 10 includes a valve body 15 and a pilot valve plate 16 connected to the valve body 15, the valve body 15 and the pilot valve plate 16 close together to clamp the elastic diaphragm 32, the pilot valve plate 16 and the elastic diaphragm 32 form a pilot cavity, and the pilot channel 163 is provided on the pilot valve plate 16 and communicates with the pilot cavity.

[0039] The valve body 15 and the pilot valve plate 16 are closed to clamp and fix the elastic diaphragm 32, which can improve the convenience of connecting the elastic diaphragm 32 and the stability of assembly. Furthermore, the pilot valve plate 16 is provided with an arc surface groove 161 and an edge rib 162 located at the edge of the arc surface groove 161. The edge rib 162 is crimped to the edge of the elastic diaphragm 32, and a pilot cavity is formed between the arc surface groove 161 and the elastic diaphragm 32. The pilot cavity is composed of an arc-shaped space, so that the elastic diaphragm 32 can adapt to the arc surface groove 161 during the elastic deformation process, thereby improving the mute effect and reducing the space size required for the elastic deformation of the elastic diaphragm 32. The elastic diaphragm 32 gradually elastically deforms along the arc-shaped groove, and the deformation effect is good.

[0040] In one embodiment, the valve body 15 is provided with an exhaust groove 157 and an exhaust rib 153 protruding from the exhaust groove 157 . The exhaust rib 153 is provided around the opening of the air guide channel 151 . When the elastic diaphragm 32 abuts against the exhaust rib 153 , it separates the first oxygen production channel 13 and the exhaust channel 12 .

[0041] A deformation space and a gas circulation space on the other side of the elastic diaphragm 32 are formed between the exhaust groove 157 and the exhaust rib 153. The exhaust channel 12 is connected to the exhaust groove 157. When the elastic diaphragm 32 is pressed against and sealed to the exhaust rib 153 around the air guide channel 151, the exhaust channel 12 and the first oxygen production channel 13 are separated, and the sealing joint surface between the elastic diaphragm 32 and the exhaust rib 153 is reduced. The elastic diaphragm 32 can be elastically deformed to fit the exhaust rib 153, and the sealing effect is good.

[0042] Similar to the elastic deformation structure of the elastic diaphragm 32, the valve body assembly 10 further includes a front valve plate 17 mounted on the valve body 15, the front valve plate 17 is provided with an air intake groove, and the hollow diaphragm 33 is provided with an air guide hole 331 connecting the air intake groove and the air intake channel 11. The valve body 15 is provided with an air intake rib 152 surrounding the air intake channel 151, and the hollow diaphragm 33 separates the first oxygen production channel 13 and the air intake channel 11 when it abuts against the air intake rib 152. The air intake rib 152 is arranged around the air intake channel 151, thereby forming an elastic structure. Preferably, a spring is installed in the air intake groove to improve the resetting effect of the valve stem 31.

[0043] In one embodiment, the valve body assembly 10 is provided with an assembly boss 155 and an installation hole 156 penetrating the assembly boss 155 on both sides, and the installation hole 156 is used to lock and install the valve body assembly 10 to the oxygen concentrator to improve assembly convenience. Preferably, the first pilot member 20 and the second pilot member 30 are distributed on both sides of the assembly boss 155.

[0044] In one embodiment, the valve body assembly 10 is provided with an atomization port 18 communicating with the air inlet passage 11. The atomization port 18 can be connected to an external atomization device to improve the application flexibility of the gas distribution valve.

[0045] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0046] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A silent gas distribution valve, characterized in that: The silent gas distribution valve comprises a valve body assembly, a first pilot and a second pilot installed on the valve body assembly, the valve body assembly is provided with an air intake channel, a first oxygen production channel, a second oxygen production channel, an exhaust channel and a pilot channel, the air intake channel and the pilot channel are connected, the silent gas distribution valve comprises a first diaphragm assembly and a second diaphragm assembly movable on the valve body assembly, the pilot channel is connected to one end of the first diaphragm assembly and one end of the second diaphragm assembly respectively, the first diaphragm assembly controls the on-off of the air intake channel and the first oxygen production channel through the first pilot, the second diaphragm assembly controls the on-off of the air intake channel and the second oxygen production channel through the second pilot, and the first diaphragm assembly and the second diaphragm assembly operate alternately; The channel openings of the first oxygen production channel, the second oxygen production channel and the exhaust channel are distributed on the first surface of the valve body assembly, the channel opening of the air intake channel is distributed on the second surface of the valve body assembly, and the first surface and the second surface are distributed on the valve body assembly back to back.

2. The silent gas distribution valve according to claim 1, characterized in that: A partially protruding mounting boss is provided on the first surface of the valve body assembly, and the channel openings of the first oxygen production channel, the second oxygen production channel and the exhaust channel are distributed on the mounting boss.

3. The silent gas distribution valve according to claim 1, characterized in that: The first diaphragm assembly includes a valve stem, a hollow diaphragm and an elastic diaphragm respectively installed at both ends of the valve stem, the valve body assembly is provided with an air guide channel, the valve stem is inserted into the air guide channel, the air intake channel is connected to the first oxygen production channel through the air guide channel, the exhaust channel is connected to the first oxygen production channel through the air guide channel, the hollow diaphragm movably opens and closes one end opening of the air guide channel to control the on-off of the air intake channel and the air guide channel, and the elastic diaphragm movably opens and closes the other end opening of the air guide channel to control the on-off of the exhaust channel and the air guide channel.

4. The silent gas distribution valve according to claim 3, characterized in that: The valve body assembly includes a valve body and a pilot valve plate connected to the valve body, the valve body and the pilot valve plate are closed to clamp the elastic diaphragm, the pilot valve plate and the elastic diaphragm form a pilot cavity, and the pilot channel is arranged on the pilot valve plate and communicated with the pilot cavity.

5. The silent gas distribution valve according to claim 4, characterized in that: The pilot valve plate is provided with an arcuate groove and an edge rib located at the edge of the arcuate groove. The edge rib is pressed against the edge of the elastic diaphragm. The pilot cavity is formed between the arcuate groove and the elastic diaphragm.

6. The silent gas distribution valve according to claim 4, characterized in that: The valve body is provided with an exhaust groove and an exhaust rib protruding from the exhaust groove, the exhaust rib is arranged around the opening of the air guide channel, the exhaust channel and the exhaust groove are connected, and the elastic diaphragm separates the first oxygen production channel and the exhaust channel when it abuts against the exhaust rib.

7. The silent gas distribution valve according to claim 4, characterized in that: The valve body assembly also includes a front valve plate installed on the valve body, the front valve plate is provided with an air intake groove, the hollow diaphragm is provided with an air guide hole connecting the air intake groove and the air intake channel, the valve body is provided with an air intake rib surrounding the air guide channel, and the hollow diaphragm separates the first oxygen production channel and the air intake channel when it abuts against the air intake rib.

8. The silent gas distribution valve according to any one of claims 1 to 7, characterized in that: The structure of the first diaphragm assembly is the same as that of the second diaphragm assembly, and the structure of the first diaphragm assembly and the second diaphragm assembly are respectively located on both sides of the air inlet passage.

9. The silent gas distribution valve according to claim 1, characterized in that: Both sides of the valve body assembly are provided with assembly bosses and mounting holes penetrating the assembly bosses.

10. The silent gas distribution valve according to claim 1, characterized in that: The valve body assembly is provided with an atomizing port communicated with the air inlet passage.

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