Gas distribution device

Abstract

The invention provides a gas distribution device which comprises a gas distribution main body, a one-way filtering mechanism and at least two distribution control valves, the one-way filtering mechanism and the distribution control valves are arranged in the gas distribution main body, the gas distribution main body is provided with a gas inlet and a gas distribution channel which are communicated with the one-way filtering mechanism, the gas inlet is used for receiving gas to be distributed, and the gas distribution channel is communicated with the one-way filtering mechanism. The gas distribution channel is provided with a plurality of gas distribution ports communicated with the distribution control valves in a one-to-one correspondence mode, the gas distribution body is provided with gas outlets communicated with the distribution control valves in a one-to-one correspondence mode, and the distribution control valves are used for controlling opening of the gas outlets. According to the gas distribution device, the gas inlet, the one-way filtering mechanism and the distribution control valve are communicated with one another, so that the gas passing through the gas distribution device can be divided into a plurality of parts, and the gas distribution device can be conveniently used in various subsequent experiments; the structure is simple, and the operation is very convenient.

Description

Technical Field

[0001] The present application relates to the technical field of gas distribution, and further to a gas distribution device. Background Art

[0002] The gas distribution device is a device used to accurately control and distribute gas. It is mostly used in laboratories, industrial production, environmental monitoring and other fields, especially in high-pressure airtightness tests, pressure tests, process gas distribution, etc. in aerospace, aviation, military industry, chemical industry, energy and other fields. The gas distribution device can be used to control the regulation, control and distribution of gas, and can achieve accurate regulation of gas flow to meet the gas demand of different equipment.

[0003] The design of the gas distribution device usually includes gas circuit, circuit and frame. The gas circuit is the core of the gas distribution box, which is usually connected by pipes, joints, filters, valves, pressure signal devices, temperature signal devices and other components. However, the existing gas distribution device has a complex structure, a large volume, and is inconvenient to use.

[0004] To this end, the present invention is dedicated to providing a gas distribution device to solve the above technical problems. Summary of the invention

[0005] In response to the above technical problems, the purpose of this application is to provide a gas distribution device, which aims to cooperate with a one-way filtering mechanism and at least two distribution control valves to divide the gas into several portions after passing through the gas distribution device. The operation is very convenient, the structure is simple, and the integration is high.

[0006] In order to achieve the above-mentioned object, the present application provides a gas distribution device including a gas distribution body, a one-way filtering mechanism and at least two distribution control valves, wherein the one-way filtering mechanism and the distribution control valve are both arranged in the gas distribution body;

[0007] The gas distribution body is provided with an air inlet and a gas distribution channel connected to the one-way filtering mechanism, the air inlet is used to receive the gas to be distributed, and the gas distribution channel is provided with a plurality of gas distribution ports connected to the distribution control valves in a one-to-one correspondence;

[0008] Among them, the gas distribution body is provided with an air outlet which is connected one-to-one with the distribution control valve, and the distribution control valve is used to control the opening of the air outlet so that the gas to be distributed flows through the one-way filtering mechanism, the gas distribution channel and the distribution control valve, and flows out through the air outlet.

[0009] In some embodiments, it further includes a pressure measuring joint arranged on the outer side wall of the gas distribution body, and the distribution control valve is provided with a pressure measuring hole connected to the pressure measuring joint, and the pressure measuring joint is used for a sealed connection with an external pressure measuring device.

[0010] In some embodiments, the one-way filtering mechanism comprises:

[0011] A filter cartridge assembly, wherein a notch groove is provided on one side of the gas distribution body, the filter cartridge assembly is arranged in the notch groove, and the notch groove is connected to the air inlet and the filter cartridge assembly;

[0012] A one-way valve assembly, one end of which is inserted into the filter cartridge assembly and tightly connected to the filter cartridge assembly, the one-way valve assembly is communicated with the filter cartridge assembly and the gas distribution channel, and the other end of the one-way valve assembly is tightly connected to the notch groove to allow the gas to be distributed to flow from the filter cartridge assembly to the gas distribution channel through the one-way valve assembly.

[0013] In some embodiments, the dispensing control valve comprises:

[0014] A rotating ball rotatably arranged at the gas distribution port, wherein a through hole is arranged on the rotating ball, and an inner groove is arranged on the outer surface of the rotating ball;

[0015] An adjusting member, which is rotatably disposed on the gas distribution body and is engaged with the inner groove;

[0016] A control valve body, the control valve body is connected to the air outlet and is arranged corresponding to the rotating ball, and the pressure measuring hole is arranged on the control valve body;

[0017] Wherein, the regulating member is used to drive the rotating ball to rotate, so that the through hole is connected with the valve body of the control valve, thereby controlling the opening of the air outlet.

[0018] In some embodiments, the filter cartridge assembly includes a filter cartridge and a filter screen disposed around the outside of the filter cartridge, the filter cartridge is provided with a plurality of air filter holes connected to the air inlet, and one end of the filter cartridge is provided with an opening that cooperates with the one-way valve assembly.

[0019] In some embodiments, the one-way valve assembly includes:

[0020] a one-way valve body, wherein the one-way valve body is connected to the gas distribution channel, one end of the one-way valve body is set as an open end connected to the filter cartridge and is tightly connected to the filter cartridge, and the other end of the one-way valve body is tightly connected to the notch groove;

[0021] A stopper, the stopper is movably disposed in the one-way valve body and is suitable for limiting cooperation with the opening end;

[0022] An elastic member, one end of which is arranged on the top wall of the one-way valve body, and the other end of which is fixedly connected to the stopper so that the stopper abuts against the opening end.

[0023] In some embodiments, an air inlet connector is further provided on the outer side wall of the air distribution body, and the air inlet connector is used to communicate with the air inlet.

[0024] In some embodiments, a temperature measurement channel and an air intake channel are provided in the gas distribution body, and the air intake channel is connected to the air inlet and the one-way filtering mechanism;

[0025] One end of the temperature measuring channel is connected to the air inlet channel, and the other end of the temperature measuring channel is arranged on the side wall of the gas distribution body for being tightly connected to an external temperature measuring device.

[0026] In some embodiments, two distribution control valves are provided, namely a first distribution control valve and a second distribution control valve.

[0027] In some embodiments, the gas distribution channel includes a first channel and a second channel, the first channel is connected to the one-way filtering mechanism and the first distribution control valve;

[0028] The second passage is in communication with the first passage and the second distribution control valve.

[0029] Compared with the prior art, the gas distribution device provided in this application has the following beneficial effects:

[0030] 1. The present invention provides a gas distribution device, in which the gas to be distributed enters the gas distribution body through the air inlet, flows into a plurality of distribution control valves through the gas distribution ports of the gas distribution channel after flowing through the one-way filtering mechanism. In this process, the one-way filtering mechanism can filter the gas, prevent gas backflow, and ensure the stability of gas flow. When the gas to be distributed flows through the distribution control valve, the staff only needs to operate the distribution control valve according to actual needs to control the opening and closing of the corresponding gas outlet to achieve gas distribution. The operation is very convenient, and fewer parts are required, which effectively improves the integration of the gas distribution device and reduces the size of the device.

[0031] 2. A gas distribution device provided by the present invention has a pressure measuring joint on the outer wall of the gas distribution body that can be tightly connected to an external pressure measuring device. A temperature measuring channel is also provided in the gas distribution body. The temperature measuring channel is used to be tightly connected to an external temperature measuring device, so as to realize real-time monitoring of the temperature and pressure of the gas and ensure the stability of gas distribution. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present application.

[0033] Figure 1 It is a structural schematic diagram of a gas distribution device provided by the present invention;

[0034] Figure 2 It is a schematic diagram of the internal structure of a gas distribution device provided by the present invention;

[0035] Figure 3 It is a structural schematic diagram of a one-way filtering mechanism of a gas distribution device provided by the present invention;

[0036] Figure 4 It is a schematic diagram of the internal structure of a one-way filtering mechanism of a gas distribution device provided by the present invention;

[0037] Figure 5 The present invention provides Figure 4 A structural diagram of A;

[0038] Figure 6 The invention is a schematic diagram of the structure of a distribution control valve of a gas distribution device.

[0039] Explanation of the accompanying drawings: gas distribution body 1, air inlet 11, first channel 12, second channel 13, pressure measuring joint 14, air inlet joint 15, temperature measuring channel 16, air inlet channel 17, air outlet 18, blocking block 19, one-way filtering mechanism 2, filter cartridge assembly 21, filter cartridge 211, air filter hole 212, filter screen 213, one-way valve assembly 22, one-way valve body 221, block 222, elastic member 223, guide rod 224, sealing ring 225, distribution control valve 3, rotating ball 31, adjusting member 32, control valve body 33, pressure measuring hole 331, air outlet joint 34. DETAILED DESCRIPTION

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0041] In order to simplify the drawings, only the parts related to the application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0042] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0043] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0046] In one embodiment, a gas distribution device is described, which aims to achieve gas distribution under the action of the distribution control valve 3 after the gas flows through the one-way filter mechanism 2 by setting a one-way filter mechanism 2 and a plurality of distribution control valves 3 in the gas distribution body 1, and has the characteristics of simple structure and high integration.

[0047] Specifically, see the attached drawings of the specification Figures 1 to 6A gas distribution device includes a gas distribution body 1, a filter mechanism 2 and a distribution control valve 3, wherein the filter mechanism 2 and the distribution control valve 3 are both arranged in the gas distribution body 1. Accordingly, the gas distribution body 1 is equipped with an air inlet 11, which is connected to the one-way filter mechanism 2, and its function is to introduce the gas to be distributed. Inside the gas distribution body 1, there is a gas distribution channel, and this gas distribution channel is connected to the one-way filter mechanism 2, so that after the gas enters the gas distribution body 1 through the air inlet 11, it enters the one-way filter mechanism 2, and the gas will be filtered and purified by the one-way filter mechanism 2 while flowing into the one-way filter mechanism 2, and then flow into the gas distribution channel.

[0048] Correspondingly, a plurality of gas distribution ports are provided in one end of the gas distribution channel away from the one-way filtering mechanism 2, and the plurality of gas distribution ports are arranged in one-to-one correspondence with the distribution control valves 3, so that each gas distribution port is connected to a distribution control valve 3, so that the gas flowing into the gas distribution channel flows from several gas distribution ports into the corresponding distribution control valves 3.

[0049] In addition, the gas distribution body 1 is also provided with a plurality of gas outlets 18, and these gas outlets 18 are also in one-to-one correspondence with the distribution control valves 3, so that each distribution control valve 3 is respectively connected to a gas outlet 18. The distribution control valve 3 is mainly used to manipulate the opening and closing state of the gas outlet 18, thereby controlling whether the gas flows out from the corresponding gas outlet 18. Therefore, after the gas enters the one-way filter mechanism 2 through the gas inlet 11 for purification, is distributed through the gas distribution channel, and is adjusted by the distribution control valve 3, it is finally released through these gas outlets 18.

[0050] It is understandable that in the prior art, the gas distribution system is a sophisticated device specially designed for accurate management and distribution of gas. It plays a key role in many fields, especially in high-demand industries such as space exploration, aviation, national defense, chemical industry and energy fields. It is extremely important in applications such as high-pressure sealing testing, pressure testing and process gas mixing. The system can finely regulate, manage and distribute the gas to ensure accurate control of the gas flow to meet the specific gas requirements of various equipment. However, the structure of the existing gas distribution system is relatively complex, with many parts and low integration. The gas distribution device provided in this embodiment only needs a one-way filter mechanism 2 and a distribution control valve 3 to achieve gas distribution, without the need for more parts, and has a high degree of integration.

[0051] In one embodiment, see the attached specification Figures 2 to 5, this embodiment further describes the filter cartridge assembly 21. The one-way filtering mechanism 2 includes a filter cartridge assembly 21 and a one-way valve assembly 22, wherein a notch groove is provided on one side wall of the gas distribution body 1, and the notch of the notch groove is provided on the outer side wall of the gas distribution body 1. Accordingly, the filter cartridge assembly 21 is installed in the notch groove of the gas distribution body 1, and the notch groove is connected to the air inlet 11 and the filter cartridge assembly 21.

[0052] Furthermore, one end of the one-way valve assembly 22 is inserted into the interior of the filter cartridge assembly 21 and is sealed to the filter cartridge assembly 21. Correspondingly, the other end of the one-way valve assembly 22 is sealed to the inner wall of the notch groove to seal the notch of the notch groove, so that the gas enters the notch groove through the air inlet 11 and then enters the filter cartridge assembly 21. At the same time, the one-way valve assembly 22 is interconnected with the filter cartridge assembly 21 and the gas distribution channel, so that the gas to be distributed can flow to the gas distribution channel after passing through the air inlet 11, the filter cartridge assembly 21 and the one-way valve assembly 22.

[0053] Generally speaking, this embodiment further describes the filter cartridge assembly 21. Figure 4 and 5 The filter cartridge assembly 21 of this embodiment includes a filter screen 213 and a filter cartridge 211, and the filter screen 213 is arranged around the outside of the filter cartridge 211. Accordingly, a plurality of air filter holes 212 are provided on the filter cartridge 211 so that the filter cartridge 211 is connected to the notch groove. In addition, one end of the filter cartridge 211 is provided with an opening that matches the one-way valve assembly 22, so that one end of the one-way valve assembly 22 can be inserted into the filter cartridge 211 through the opening card connection, and is sealed and connected to the filter cartridge 211. Accordingly, one end of the one-way valve assembly 22 away from the filter cartridge 211 is sealed and connected to the inner wall of the notch groove.

[0054] In addition, the one-way valve assembly 22 is connected to the filter cartridge assembly 21 and the gas distribution channel, so that the gas to be distributed flows from the filter cartridge assembly 21 to the gas distribution channel through the one-way valve assembly 22 .

[0055] It can be understood that the gas enters the notch groove through the air inlet 11, and enters the filter cartridge 211 through the air filter hole 212 after being filtered and purified by the filter mesh 213. The gas entering the filter cartridge 211 flows into the gas distribution channel through the one-way valve assembly 22.

[0056] Furthermore, in order to ensure that the gas can smoothly pass through the one-way filtering mechanism 2 into the gas distribution channel and prevent the gas from flowing back, see the attached manual. Figure 4In this embodiment, the one-way valve assembly 22 is further described. The one-way valve assembly 22 includes a one-way valve body 221, a stopper 222 and an elastic member 223. The one-way valve body 221 is connected to the gas distribution channel, and one end of the one-way valve body 221 is provided with an open end, which is connected to the filter cartridge 211 and forms a sealed connection with the notch groove. The stopper 222 is movably arranged inside the one-way valve body 221, and can be moved along the extension direction of the one-way valve body 221 to adjust the distance between the one-way valve body 221 and the open end.

[0057] In particular, one end of the elastic member 223 is fixedly connected to the stopper 222, and the other end is fixedly connected to the top wall of the one-way valve body 221, so that the stopper 222 contacts and squeezes the open end, so that the stopper 222 forms a sealed connection with the inner wall of the one-way valve body 221. Generally speaking, the open end is set as a closing structure, so that the inner diameter of the open end is slightly smaller than the outer diameter of the stopper 222, so that the stopper 222 abuts against the inner wall of the open end under the action of the elastic member 223, thereby forming a sealed connection.

[0058] The specific working principle is as follows: the one-way valve assembly 22 controls the one-way flow of gas through the movement of the stopper 222 and the restoring force of the elastic member 223. When the gas flows from the filter cartridge 211 to the gas distribution channel, the stopper 222 is pushed open under the action of the air pressure, allowing the gas to flow from the filter cartridge 211 to the one-way valve body 221. Correspondingly, when the gas attempts to flow in the reverse direction, the stopper 222 abuts against the open end under the action of the elastic member 223, closing the channel and preventing the gas from flowing back. Such a design ensures that the gas can only flow in one direction, prevents backflow, and thus protects the safety of the device.

[0059] It should be noted that a sealing ring 225 is provided at the other end of the one-way valve body 221 to ensure the sealing performance between the one-way valve body 221 and the inner wall of the notch groove. In addition, as a preferred embodiment, a guide rod 224 is further provided on the top wall of the one-way valve body 221, and the guide rod 224 is provided along the extension direction of the one-way valve body 221. The elastic member 223 is sleeved on the outer side of the guide rod 224 to ensure that the elastic member 223 can be stably and reliably stretched and compressed.

[0060] In one embodiment, see the attached specification Figure 1A pressure measuring joint 14 is also installed on the outer wall of the gas distribution body 1, and a pressure measuring hole 331 connected to the pressure measuring joint 14 is provided on the distribution control valve 3. The function of this pressure measuring joint 14 is to seal and dock with an external pressure measuring device. Inside the gas distribution body 1, a temperature measuring channel 16 and an air inlet channel 17 are also provided, wherein the air inlet channel 17 is interconnected with the air inlet 11 and the one-way filtering mechanism 2. Correspondingly, one end of the temperature measuring channel 16 is connected to the air inlet channel 17, and the other end is arranged on the side wall of the gas distribution body 1, and this end is used to seal and connect with an external temperature measuring device. In this way, real-time monitoring of the temperature and pressure of the gas can be achieved, which is convenient for the staff to make timely adjustments according to the temperature and pressure conditions to ensure the stability of gas distribution.

[0061] In addition, an air inlet connector 15 is provided on the outer wall of the gas distribution body 1, and the air inlet connector 15 is used to communicate with the air inlet 11 and to communicate with the external air supply equipment. Correspondingly, an air outlet connector 34 is also provided on the outer wall of the gas distribution body 1, and the air outlet connector 34 is used to communicate with the air outlet 18.

[0062] Furthermore, there are two distribution control valves 3, which are respectively set as the first distribution control valve and the second distribution control valve. Correspondingly, the gas distribution channel is also divided into two paths, namely the first channel 12 and the second channel 13. The first channel 12 is directly connected to the one-way filtering mechanism 2 and the first distribution control valve, and the second channel 13 is connected to the first channel 12 and the second distribution control valve.

[0063] In addition, one end of the second channel 13 away from the first channel 12 is opened on the outer wall of the gas distribution body 1, and is provided with a blocking block 19 connected by threads. Correspondingly, an opening connected to the notch groove is provided below the notch groove, and is provided with a blocking block 19 connected by threads. The blocking block 19 is used to ensure the sealing of the gas distribution channel and the notch groove, and the blocking block 19 can be removed when it is necessary to inspect the inside of the gas distribution body 1.

[0064] It can be understood that, as a preference, the temperature measuring channel 16, the air inlet channel 17 and the gas distribution channel are all formed by internal recesses of the gas distribution body 1, and there is no need to set separate pipes inside the gas distribution body 1. The interior of the gas distribution body 1 is optimized, the number of internal joints used is reduced, the integration of the gas distribution device is further improved, and the size is reduced.

[0065] In one embodiment, referring to the accompanying drawings, Figure 1 and Figure 5, this embodiment further describes the distribution control valve 3. The distribution control valve 3 includes a rotating ball 31, an adjusting member 32 and a control valve body 33. The rotating ball 31 is arranged at the gas distribution port, and is provided with a through hole, and an inner groove is arranged on its outer surface. One end of the adjusting member 32 is inserted into the inside of the gas distribution body 1, and can rotate, and is snap-fitted with the inner groove of the rotating ball 31, so as to drive the rotating ball 31 to rotate through the adjusting member 32, thereby adjusting the through hole. In addition, the control valve body 33 is connected to the gas outlet 18, and a pressure measuring hole 331 for measuring pressure is provided on the control valve body 33, and the control valve body 33 is installed at one end of the rotating ball 31, and is arranged corresponding to the rotating ball 31.

[0066] In this configuration, the function of the adjusting member 32 is to drive the rotating ball 31 to rotate, thereby controlling the open state and the closed state of the gas outlet 18. The adjusting member 32 is used to drive the rotation of the rotating ball 31 to adjust the positional relationship between the through hole of the rotating ball 31 and the gas distribution hole and the control valve body 33. When the rotating ball 31 rotates to the point where the through hole is connected to the gas distribution port and the control valve body 33, the gas can flow out through the distribution control valve 3 and the gas outlet 18. Correspondingly, when the adjusting member 32 drives the outer surface of the rotating ball 31 to correspond to the gas distribution port and the control valve body 33, the through hole is not connected to the gas distribution port and the control valve body 33, and the gas cannot flow out through the distribution control valve 3 and the gas outlet 18. Thus, the control of the gas outlet 18 is achieved. This design enables the gas distribution device to accurately control the outflow of gas to meet different application requirements.

[0067] Generally speaking, the adjusting member 32 can be set as a handle, or can be set as a driving member such as a motor to drive the rotating ball 31 to rotate. They are not explained one by one here, and all are within the protection scope of the present invention.

[0068] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications should also be regarded as the protection scope of the present application.

Claims

1. A gas distribution device, characterized in that: It comprises a gas distribution body, a one-way filtering mechanism and at least two distribution control valves, wherein the one-way filtering mechanism and the distribution control valves are both arranged in the gas distribution body; The gas distribution body is provided with an air inlet and a gas distribution channel connected to the one-way filtering mechanism, the air inlet is used to receive the gas to be distributed, and the gas distribution channel is provided with a plurality of gas distribution ports connected to the distribution control valves in a one-to-one correspondence; Among them, the gas distribution body is provided with an air outlet which is connected one-to-one with the distribution control valve, and the distribution control valve is used to control the opening of the air outlet so that the gas to be distributed flows through the one-way filtering mechanism, the gas distribution channel and the distribution control valve, and flows out through the air outlet.

2. A gas distribution device according to claim 1, characterized in that: It also includes a pressure measuring joint arranged on the outer side wall of the gas distribution body, and the distribution control valve is provided with a pressure measuring hole connected with the pressure measuring joint, and the pressure measuring joint is used for sealing connection with an external pressure measuring device.

3. A gas distribution device according to claim 2, characterized in that: The one-way filtering mechanism comprises: A filter cartridge assembly, wherein a notch groove is provided on one side of the gas distribution body, the filter cartridge assembly is arranged in the notch groove, and the notch groove is connected to the air inlet and the filter cartridge assembly; A one-way valve assembly, one end of which is inserted into the filter cartridge assembly and tightly connected to the filter cartridge assembly, the one-way valve assembly is communicated with the filter cartridge assembly and the gas distribution channel, and the other end of the one-way valve assembly is tightly connected to the notch groove to allow the gas to be distributed to flow from the filter cartridge assembly to the gas distribution channel through the one-way valve assembly.

4. A gas distribution device according to claim 3, characterized in that: The distribution control valve comprises: A rotating ball rotatably arranged at the gas distribution port, wherein a through hole is arranged on the rotating ball, and an inner groove is arranged on the outer surface of the rotating ball; An adjusting member, which is rotatably disposed on the gas distribution body and is engaged with the inner groove; A control valve body, the control valve body is connected to the air outlet and is arranged corresponding to the rotating ball, and the pressure measuring hole is arranged on the control valve body; Wherein, the regulating member is used to drive the rotating ball to rotate, so that the through hole is connected with the valve body of the control valve, thereby controlling the opening of the air outlet.

5. A gas distribution device according to claim 3, characterized in that: The filter cartridge assembly comprises a filter cartridge and a filter screen arranged around the outside of the filter cartridge. The filter cartridge is provided with a plurality of air filter holes connected with the air inlet. One end of the filter cartridge is provided with an opening matched with the one-way valve assembly.

6. A gas distribution device according to claim 5, characterized in that: The one-way valve assembly comprises: a one-way valve body, wherein the one-way valve body is connected to the gas distribution channel, one end of the one-way valve body is set as an open end connected to the filter cartridge and is tightly connected to the filter cartridge, and the other end of the one-way valve body is tightly connected to the notch groove; a stopper, the stopper being movably disposed in the one-way valve body; An elastic member, one end of which is arranged on the top wall of the one-way valve body, and the other end of which is fixedly connected to the stopper so that the stopper forms a sealed connection with the opening end.

7. A gas distribution device according to any one of claims 1 to 6, characterized in that: An air inlet connector is also provided on the outer side wall of the air distribution body, and the air inlet connector is used to communicate with the air inlet.

8. A gas distribution device according to claim 7, characterized in that: A temperature measuring channel and an air intake channel are provided in the gas distribution body, and the air intake channel is connected to the air inlet and the one-way filtering mechanism; One end of the temperature measuring channel is connected to the air inlet channel, and the other end of the temperature measuring channel is arranged on the side wall of the gas distribution body for being tightly connected to an external temperature measuring device.

9. A gas distribution device according to claim 1, characterized in that: The distribution control valve is provided with two, namely a first distribution control valve and a second distribution control valve.

10. A gas distribution device according to claim 9, characterized in that: The gas distribution channel includes a first channel and a second channel, the first channel is connected to the one-way filtering mechanism and the first distribution control valve; The second passage is in communication with the first passage and the second distribution control valve.

Images