Air outlet valve

Abstract

The utility model discloses an air outlet valve, relates to the field of compressed air purification treatment, and can simplify the structure of the air outlet valve, so that a valve core is more stable and reliable in action, balanced in stress and not easy to deform. An air outlet valve comprises a valve body and a valve element assembly. A first cavity and a second cavity are formed in the valve body. And the first chamber is communicated with the second chamber. The valve element assembly is detachably arranged in the valve body. The number of the valve element assemblies is two. The two valve element assemblies are arranged in the first cavity and the second cavity correspondingly. The valve body is provided with a first air inlet cavity and a second air inlet cavity. The first air inlet cavity is communicated with the first cavity. And the second air inlet cavity is communicated with the second cavity. One of the two valve element assemblies is used for controlling communication and closing of the first air inlet cavity and the first cavity, and the other valve element assembly is used for controlling communication and closing of the second air inlet cavity and the second cavity. The valve element assembly serves as an assembly whole, during maintenance, overall disassembly and assembly of the valve element assembly can be achieved, and the maintenance efficiency of the air outlet valve is improved.

Description

Technical Field

[0001] The utility model relates to the field of compressed air purification and processing, in particular to an air outlet valve. Background Art

[0002] At present, the outlet valve with double check valve structure is widely used in compressed air dryers. Regardless of the up and down movement mode or the horizontal movement mode, the valve core is reset by the spring. When the pressure difference at both ends of the valve core is greater than the opening pressure of the reset spring, the valve core opens. The valve core and spring are placed inside the outlet valve body.

[0003] However, the existing double-check valve structure of the outlet valve is complicated to assemble, has a short service life, easily affects production, and causes inconvenience in maintenance. The entire outlet valve needs to be disassembled and assembled during maintenance, which increases maintenance costs, especially for large-capacity models. Utility Model Content

[0004] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art and to provide an air outlet valve that can simplify the structure of the air outlet valve so that the valve core is more stable and reliable when it moves, the force is balanced, and it is not easy to deform. The valve core can also be disassembled and assembled separately, which greatly reduces maintenance time and cost.

[0005] According to a first aspect of the present utility model, an air outlet valve is provided, comprising a valve body and a valve core assembly, wherein a first chamber and a second chamber are provided in the valve body, the first chamber is communicated with the second chamber, the valve core assembly is detachably arranged in the valve body, the valve core assembly is divided into two groups, and the two groups of valve core assemblies are respectively arranged in the first chamber and the second chamber, the valve body is provided with a first air inlet cavity, a second air inlet cavity and an air outlet, the first air inlet cavity is communicated with the first chamber, and the second air inlet cavity is communicated with the second chamber, one of the two groups of valve core assemblies is used to control the communication and closing of the first air inlet cavity and the first chamber, and the other group of valve core assemblies is used to control the communication and closing of the second air inlet cavity and the second chamber, the air outlet is communicated with the first chamber, and the air outlet is communicated with the second chamber.

[0006] According to an embodiment of the utility model, an air outlet valve has at least the following beneficial effects: an air outlet valve includes a valve body and a valve core assembly. A first chamber and a second chamber are provided in the valve body. The first chamber is connected to the second chamber. The valve core assembly is detachably arranged in the valve body. There are two groups of valve core assemblies. The two groups of valve core assemblies are respectively arranged in the first chamber and the second chamber. A first air inlet cavity and a second air inlet cavity are provided on the valve body. The first air inlet cavity is connected to the first chamber. The second air inlet cavity is connected to the second chamber. The valve core assembly is used to control the connection and closing of the first air inlet cavity and the first chamber. The valve core assembly is used to control the connection and closing of the second air inlet cavity and the second chamber. The valve core assembly is assembled as a whole, and the valve core assembly can be disassembled and replaced as a whole during maintenance, which greatly improves the maintenance efficiency of the air outlet valve and reduces production costs.

[0007] According to an air outlet valve described in the utility model, the valve core assembly includes a one-way valve seat, a guide sleeve, a valve stem, a spring and a one-way valve pad. The one-way valve seat is detachably arranged on the valve body, the guide sleeve is inserted into the one-way valve seat, one end of the valve stem is movably inserted in the guide sleeve, the one-way valve pad is arranged at the other end of the valve stem, the spring is sleeved on the valve stem, one end of the spring presses against the guide sleeve, and the other end presses against the one-way valve pad. The spring can drive the one-way valve pad away from the one-way valve seat.

[0008] According to the air outlet valve described in the utility model, a first spring fixing seat is provided on the guide shaft sleeve, and one end of the spring is clamped on the first spring fixing seat.

[0009] According to the air outlet valve described in the utility model, a second spring fixing seat is provided on the one-way valve backing plate, and one end of the spring is clamped on the second spring fixing seat.

[0010] According to the air outlet valve described in the utility model, the valve core assembly further includes a bushing, the bushing is arranged in the guide sleeve, and the valve stem is inserted in the bushing.

[0011] According to the air outlet valve described in the utility model, the guide sleeve is also provided with a pressure relief exhaust port.

[0012] According to an air outlet valve described in the utility model, the one-way valve gasket includes a fixed plate, a sealing gasket and a pressure plate, the fixed plate is arranged on the valve stem, the sealing gasket is sleeved on the valve stem and fits with the fixed plate, the pressure plate is sleeved on the valve stem and fits with the sealing gasket, and the fixed plate, the sealing gasket and the pressure plate are fixed on the valve stem by fasteners sleeved on the valve stem.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is a structural diagram of a preferred embodiment of the utility model with the valve body closed;

[0016] Figure 2 This is a schematic diagram of the structure of the exhaust of the first air intake cavity in a preferred embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the exhaust of the second air intake cavity in a preferred embodiment of the present utility model;

[0018] Figure 4 This is a structural diagram of the valve core assembly of a preferred embodiment of the present utility model. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0021] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] Reference Figures 1 to 4 A gas outlet valve includes a valve body 1 and a valve core assembly 2. A first chamber 11 and a second chamber 12 are provided in the valve body 1. The first chamber 11 is connected to the second chamber 12. The valve core assembly 2 is detachably arranged in the valve body 1. There are two groups of valve core assemblies 2. The two groups of valve core assemblies 2 are respectively arranged in the first chamber 11 and the second chamber 12. A first air inlet chamber 3, a second air inlet chamber 4 and an air outlet 5 are provided on the valve body 1. The first air inlet chamber 3 is connected to the first chamber 11. The second air inlet chamber 4 is connected to the second chamber 12. One of the two groups of valve core assemblies 2 is used to control the connection and closing of the first air inlet chamber 3 and the first chamber 11, and the other group of valve core assemblies 2 is used to control the connection and closing of the second air inlet chamber 4 and the second chamber 12. The air outlet 5 is connected to the first chamber 11. The air outlet 5 is connected to the second chamber 12.

[0024] It can be understood that the valve core assembly 2 is assembled as a whole, and during maintenance, the valve core assembly 2 can be completely disassembled and replaced, which greatly improves the maintenance efficiency of the air outlet valve and reduces production costs.

[0025] Reference Figures 1 to 4 The valve core assembly 2 includes a one-way valve seat 21, a guide sleeve 22, a valve stem 23, a spring 24, and a one-way valve backing plate 25. The one-way valve seat 21 is detachably mounted on the valve body 1. The guide sleeve 22 is inserted into the one-way valve seat 21. One end of the valve stem 23 is movably inserted into the guide sleeve 22. The one-way valve backing plate 25 is mounted on the other end of the valve stem 23. The spring 24 is sleeved on the valve stem 23. One end of the spring 24 abuts against the guide sleeve 22, and the other end abuts against the one-way valve backing plate 25. The spring 24 can drive the one-way valve backing plate 25 away from the one-way valve seat 21.

[0026] It is understood that in the embodiment of the present invention, the guide sleeve 22 cooperates with the valve stem 23 to provide guidance for the lifting and lowering of the one-way valve backing plate 25, significantly improving the precision and stability of the valve core movement. The spring 24 is mounted on the valve stem 23, and the valve stem 23 limits the spring 24, ensuring the stability of the spring 24's movement.

[0027] Reference Figures 1 to 4 A first spring fixing seat 221 is provided on the guide shaft sleeve 22. One end of the spring 24 is clamped on the first spring fixing seat 221.

[0028] Reference Figures 1 to 4 A second spring fixing seat 251 is provided on the one-way valve backing plate 25. One end of the spring 24 is clamped on the second spring fixing seat 251.

[0029] It is worth noting that in some embodiments of the present invention, one end of the spring 24 is sleeved on the first spring fixing seat 221, and the other end is sleeved on the second spring fixing seat 251. Both ends of the spring 24 are connected with the first spring fixing seat 221 and the second spring fixing seat 251 by interference fit, which can bring greater stability to the movement of the spring 24.

[0030] Reference Figures 1 to 4 The valve core assembly 2 further includes a bushing 26 , which is disposed in the guide sleeve 22 , and the valve stem 23 is inserted in the bushing 26 .

[0031] It is worth noting that in some embodiments of the present invention, the bushing 26 is a simple cylindrical structure that is easy to manufacture, can be manufactured with higher precision, and improves the stability of the movement of the valve stem 23. Furthermore, the bushing 26 can be made of copper or other materials with better wear resistance, thereby reducing wear on the valve stem 23 and the guide sleeve 22 and improving the service life of the valve core assembly 2.

[0032] Reference Figures 1 to 4 The guide sleeve 22 is also provided with a pressure relief exhaust port 222 .

[0033] It is worth noting that the pressure relief vent 222 can effectively prevent the valve stem 23 from getting stuck due to pressure buildup at the bottom of the valve stem 23 when the valve stem 23 moves downward to open.

[0034] Reference Figures 1 to 4 The one-way valve backing plate 25 includes a fixed plate 252, a sealing gasket 253, and a pressure plate 254. The fixed plate 252 is mounted on the valve stem 23. The sealing gasket 253 is mounted on the valve stem 23 and is in contact with the fixed plate 252. The pressure plate 254 is mounted on the valve stem 23 and is in contact with the sealing gasket 253. The sealing gasket 253, fixed plate 252, and pressure plate 254 are fixed to the valve stem 23 using fasteners.

[0035] The working process of an air outlet valve of the utility model is as follows:

[0036] State 1, reference Figure 1 , the outlet valve is in the original state, the intake pressure of the first air inlet chamber 3 is or the intake pressure is lower than the opening pressure of the valve core assembly 2, and the intake pressure of the second air inlet chamber 4 is or the intake pressure is lower than the opening pressure of the valve core assembly 2, the valve core assembly 2 corresponding to the first air inlet chamber 3 closes the connection between the first chamber 11 and the first air inlet chamber 3 under the elastic force of the spring, and the valve core assembly 2 corresponding to the second air inlet chamber 4 closes the connection between the second chamber 12 and the second air inlet chamber 4 under the elastic force of the spring, and the outlet valve is closed as a whole;

[0037] State 2, reference Figure 2, the first air inlet chamber 3 is filled with air, the air intake pressure of the first air inlet chamber 3 is greater than the opening pressure of the valve core assembly 2, and the air intake pressure of the second air inlet chamber 4 is or the air intake pressure is lower than the opening pressure of the valve core assembly 2, the valve core assembly 2 corresponding to the first air inlet chamber 3 opens the connection between the first chamber 11 and the first air inlet chamber 3 under the action of air pressure, and the valve core assembly 2 corresponding to the second air inlet chamber 4 closes the connection between the second chamber 12 and the second air inlet chamber 4 under the elastic force of the spring, and the gas in the first air inlet chamber 3 is discharged through the air outlet 5;

[0038] State three, reference Figure 3 , the second air inlet chamber 4 takes in air, the air intake pressure of the first air inlet chamber 3 is or the air intake pressure is lower than the opening pressure of the valve core assembly 2, when the air intake pressure of the second air inlet chamber 4 is greater than the opening pressure of the valve core assembly 2, the valve core assembly 2 corresponding to the second air inlet chamber 4 opens the connection between the second chamber 12 and the second air inlet chamber 4 under the action of air pressure, and the valve core assembly 2 corresponding to the first air inlet chamber 3 closes the connection between the first chamber 11 and the first air inlet chamber 3 under the elastic force of the spring, and the gas in the second air inlet chamber 4 is discharged through the air outlet 5.

[0039] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An air outlet valve, characterized in that: include: A valve body (1) and a valve core assembly (2), wherein the valve body (1) is provided with a first chamber (11) and a second chamber (12), wherein the first chamber (11) is communicated with the second chamber (12), and the valve core assembly (2) is detachably arranged in the valve body (1), wherein the valve core assembly (2) is divided into two groups, and the two groups of valve core assemblies (2) are respectively arranged in the first chamber (11) and the second chamber (12), and the valve body (1) is provided with a first air inlet chamber (3), a second air inlet chamber (4) and an air outlet hole (5), wherein ... The first air inlet cavity (3) is connected to the first chamber (11), and the second air inlet cavity (4) is connected to the second chamber (12). One of the two groups of valve core assemblies (2) is used to control the connection and closing of the first air inlet cavity (3) and the first chamber (11), and the other group of valve core assemblies (2) is used to control the connection and closing of the second air inlet cavity (4) and the second chamber (12). The air outlet hole (5) is connected to the first chamber (11), and the air outlet hole (5) is connected to the second chamber (12).

2. An outlet valve according to claim 1, characterized in that: The valve core assembly (2) includes a one-way valve seat (21), a guide sleeve (22), a valve stem (23), a spring (24) and a one-way valve pad (25); the one-way valve seat (21) is detachably arranged on the valve body (1); the guide sleeve (22) is inserted into the one-way valve seat (21); one end of the valve stem (23) is movably inserted into the guide sleeve (22); the one-way valve pad (25) is arranged on the other end of the valve stem (23); the spring (24) is sleeved on the valve stem (23); one end of the spring (24) abuts against the guide sleeve (22) and the other end abuts against the one-way valve pad (25); the spring (24) can drive the one-way valve pad (25) away from the one-way valve seat (21).

3. The air outlet valve according to claim 2, characterized in that: A first spring fixing seat (221) is provided on the guide shaft sleeve (22), and one end of the spring (24) is clamped on the first spring fixing seat (221).

4. An outlet valve according to claim 2 or 3, characterized in that: A second spring fixing seat (251) is provided on the one-way valve backing plate (25), and one end of the spring (24) is clamped on the second spring fixing seat (251).

5. The air outlet valve according to claim 2, characterized in that: The valve core assembly (2) further comprises a bushing (26), wherein the bushing (26) is arranged in the guide sleeve (22), and the valve stem (23) is inserted into the bushing (26).

6. The air outlet valve according to claim 2, characterized in that: The guide shaft sleeve (22) is also provided with a pressure relief outlet (222).

7. The air outlet valve according to claim 2, characterized in that: The one-way valve gasket (25) includes a fixing plate (252), a sealing gasket (253) and a pressure plate (254); the fixing plate (252) is arranged on the valve stem (23); the sealing gasket (253) is sleeved on the valve stem (23) and fits with the fixing plate (252); the pressure plate (254) is sleeved on the valve stem (23) and fits with the sealing gasket (253); the fixing plate (252), the sealing gasket (253) and the pressure plate (254) are fixed on the valve stem (23) by fasteners.

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