Airtight valve and gas transmission assembly

Abstract

The utility model provides an airtight valve and a gas transmission assembly, the airtight valve comprises a sealing mechanism, the sealing mechanism comprises a valve body and a valve plate assembly, the valve plate assembly comprises a sealing ring, a first blade and a second blade, the first blade or the second blade is provided with a connecting seat, and the connecting seat is connected with the valve body; the sealing ring is clamped and fixed between the first blade and the second blade and abuts against the inner wall of the valve body in an interference mode. And the driving mechanism comprises a driver and a connecting shaft, and the connecting shaft is connected with the connecting base and the working end of the driver so as to drive the valve plate assembly to rotate around the axis of the connecting shaft. By means of the simple structural arrangement, the problems that due to element error accumulation, the flow deviation of a sealing system is too large, and even overall failure is caused are fundamentally solved, and compared with a conventional valve body mechanism, the valve body mechanism has the advantages of being easy to operate, low in production cost, convenient to maintain in the later period, wide in application range and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve body technical field, specifically points to airtight valve and gas transmission assembly. BACKGROUND

[0002] As a key fluid control device, airtight valves have wide and important applications in many industrial fields and daily life scenarios.

[0003] The internal structure of the airtight valve commonly seen in the current market often contains a large number of components, which are nested and connected with each other to form a complex system. Based on the complex structure of the existing airtight valve, multiple components need to be assembled and matched with each other, and errors will inevitably occur during manufacturing and assembly. These errors will continue to accumulate as the number of components increases, ultimately affecting the overall performance of the airtight valve. At the same time, the accumulation of errors will also affect the flow control accuracy of the airtight valve, resulting in a large deviation between the actual flow and the set flow, thereby affecting the operating efficiency of the entire system.

[0004] In addition, the structural design of the existing airtight valve makes the correlation between each component very strong. Once one component is damaged, it will have a serious impact on the performance of the entire airtight valve. In some airtight valves, the damage of a key sealing element may cause the entire sealing system to fail, making the airtight valve unable to achieve effective sealing function. Moreover, due to the close cooperation between components, the damage of one component may trigger a chain reaction, causing other related components to fail to work. This not only increases maintenance costs and maintenance time, but also has a serious impact on production and use.

[0005] Therefore, the industry has tried to simplify the structure of the airtight valve, but overly simple structures cannot achieve stable connection of sealing elements and cannot ensure their sealing effect, especially for ring-shaped sealing mechanisms. If there is no stable bidirectional fixing structure, the sealing element is extremely prone to uneven stress, resulting in deformation load or even tearing of the sealing element.

[0006] Therefore, how to simplify the structure of the airtight valve while maintaining stable and efficient sealing performance is one of the problems to be solved in the industry at present. SUMMARY

[0007] Therefore, the utility model wants to overcome the technical problems in the prior art that the structure of the airtight valve is complex and the use stability is not high, and provides an airtight valve and a gas transmission assembly.

[0008] To solve the above technical problems, the utility model provides a kind of airtight valve, it includes: sealing mechanism, the sealing mechanism includes valve body and valve piece component, the valve piece component is set to the inside of the valve body, it includes along its thickness direction concentrically arranged sealing ring, first blade and second blade, wherein, the first blade or the second blade is equipped with connecting seat, the sealing ring is clamped and fixed between the first blade and the second blade, and the edge of the sealing ring protrudes from the blade, to interfere with the inner wall of the valve body;Driving mechanism, the driving mechanism includes driver and connecting shaft, the connecting shaft is connected the connecting seat and the working end of the driver respectively, to drive the valve piece component rotate around the axis of the connecting shaft.

[0009] In an embodiment of the utility model, the valve piece component includes two or more connecting seats arranged axially spaced along the connecting shaft, and the two or more connecting seats are connected to the same blade.

[0010] In an embodiment of the utility model, the valve body includes a main body portion and a connecting flange, the sealing mechanism is arranged in the main body portion, and the connecting flange is fixedly arranged at the edge of the main body portion to connect an external mounting surface.

[0011] In an embodiment of the utility model, the middle part of the connecting shaft is fixedly connected to the connecting seat, and the two ends of the connecting shaft are respectively penetrated through the valve body.

[0012] In an embodiment of the utility model, the driving mechanism further includes a fixed shaft sleeve and a self-lubricating bearing, the self-lubricating bearing is arranged in the fixed shaft sleeve, the fixed shaft sleeve is fixedly connected to the valve body, and the connecting shaft is penetrated into the self-lubricating bearing of the fixed shaft sleeve to be rotatably connected to the valve body.

[0013] In an embodiment of the utility model, the driving mechanism further includes a detachable part, the detachable part is axially penetrated into the fixed shaft sleeve along the connecting shaft and abuts against the connecting shaft.

[0014] In an embodiment of the utility model, the driving mechanism further includes an adapter, the adapter is arranged between the driver and the valve body, one end of the connecting shaft is connected to the driver, and the other end of the connecting shaft is penetrated into the valve body through the adapter.

[0015] In an embodiment of the utility model, the driving mechanism further includes a positioning shaft sleeve and a shaft body sealing ring, the positioning shaft sleeve is connected to the inner wall of the adapter, the connecting shaft is penetrated through the positioning shaft sleeve, and the sealing ring is sleeved on the connecting shaft and located in the positioning shaft sleeve.

[0016] The utility model also provides a gas transmission assembly, it includes the airtight valve of above.

[0017] The above technical scheme of the utility model has the following advantages compared with the prior art:

[0018] The airtight valve and the gas transmission assembly have the following advantages: the sealing ring can abut against the inner wall of the valve body with interference to form a high sealing structure for the valve body during the rotation of the valve disc driven by the driving mechanism; the structure is simple, the cooperation degree of various elements is high, and the problem of excessive flow deviation of the sealing system or even overall failure caused by element error accumulation can be fundamentally avoided; compared with the conventional valve body mechanism at the present stage, the application has the advantages of flexible use, convenient operation, low production cost, easy maintenance, wide use range and the like, and has a broad application prospect in the industry. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to make the content of the utility model more easily understood clearly, the utility model is further described in detail below according to the specific embodiments of the utility model and in combination with the drawings.

[0020] Figure 1 is a perspective structural schematic view of the airtight valve in the preferred embodiment of the utility model;

[0021] Figure 2 is Figure 1 a perspective structural schematic view of the airtight valve from another view;

[0022] Figure 3 is Figure 2 a top view of the airtight valve;

[0023] Figure 4 is Figure 3 a sectional structural schematic view of A-A in the utility model;

[0024] Figure 5 is Figure 4 an enlarged structural schematic view of B in the utility model.

[0025] The description of the drawings of the specification is as follows: 100, sealing mechanism; 110, valve body; 111, connecting flange; 112, main body part; 120, valve disc assembly; 121, first blade; 122, second blade; 123, sealing ring; 124, connecting seat; 125, fixing piece; 200, driving mechanism; 210, driver; 220, connecting shaft; 230, adapter seat; 240, positioning shaft sleeve; 250, shaft body sealing ring; 260, fixed shaft sleeve; 270, disconnection piece; 280, self-lubricating bearing. DETAILED DESCRIPTION

[0026] The utility model will be further described below in combination with the drawings and specific embodiments, so that the person skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model. Embodiment one

[0027] As shown in Figure 1 The utility model provides a gas tight valve, it includes sealing mechanism 100, sealing mechanism 100 includes valve body 110 and valve piece assembly 120, valve piece assembly 120 is arranged inside valve body 110, it includes the sealing ring 123, first blade 121 and second blade 122 along its thickness direction concentric arrangement, wherein, first blade 121 or second blade 122 is equipped with connecting seat 124, sealing ring 123 is clamped and fixed between first blade 121 and second blade 122, and the edge of sealing ring 123 protrudes from the blade, and the interference is contacted with the inner wall of valve body 110, drive mechanism 200, drive mechanism 200 includes driver 210 and connecting shaft 220, connecting shaft 220 is connected connecting seat 124 and the working end of driver 210 respectively, to drive valve piece assembly 120 rotates around the axis of connecting shaft 220.

[0028] The gas tight valve of the embodiment is driven by drive mechanism 200 to rotate the valve piece, and in this process, the sealing ring 123 can be in interference contact with the inner wall of the valve body 110 to form a high sealing structure for the valve body 110. The above structure is simple in arrangement, and the various elements have high cooperation degree, so that the problem of excessive flow deviation of the sealing system or even overall failure caused by cumulative element error can be fundamentally avoided. Compared with the conventional valve body mechanism at the present stage, the application has the advantages of flexible use, easy operation, low production cost and wide use range.

[0029] As shown in Figure 1 And Figure 2 The valve body 110 in the embodiment is preferably an annular element with a circular hollow structure inside, which can be installed in the heating and ventilation system pipeline. At the same time, the valve body 110 can also provide a mounting and connecting platform for the valve piece assembly 120 and the drive mechanism 200.

[0030] Further, in the embodiment, the valve body 110 includes a main body portion 112 and a connecting flange 111, the sealing mechanism 100 is arranged in the main body portion 112, and the connecting flange 111 is fixedly arranged at the edge of the main body portion 112 to connect an external mounting surface. Specifically, the connecting flanges 111 in the embodiment are symmetrically arranged on both sides in the thickness direction of the valve body 110. The connecting flange 111 on either side is arranged around the outer surface of the valve body 110 and perpendicular to the side wall of the valve body 110 to increase the contact area between the connecting flange 111 and the external mounting surface.

[0031] Referring to Figures 1 to 3 In the valve piece assembly 120, the diameter of the leaf is smaller than the inner diameter of the side wall of the valve body 110 to ensure that the valve piece assembly 120 can rotate inside the valve body 110, which provides a mounting connection platform for the sealing ring 123 to rotate synchronously with the sealing ring 123 driven by the driving mechanism 200, thereby realizing the opening and closing or sealing process of the valve body 110.

[0032] The diameter of the sealing ring 123 is greater than the inner diameter of the side wall of the valve body 110 to ensure that it can abut the side wall of the valve body 110 in the rotating process, thereby realizing the high sealing effect of the valve body 110. Further, the sealing ring 123 in the embodiment is preferably a silicone element, which can realize high filling and sealing of the valve body 110 and the leaf gap through its own adaptive deformation. Specifically, referring to Figure 4 and Figure 5 The structure of the valve piece assembly 120 in the embodiment can improve the connection stability of the sealing ring 123 to realize the sealing effect in the forward / reverse rotation state.

[0033] The connecting seat 124 is used to realize the connection between the driving mechanism 200 and the valve piece assembly 120. Specifically, the valve piece assembly 120 in the embodiment includes two connecting seats 124 arranged axially along the connecting shaft 220, and both of the connecting seats 124 are connected to the first leaf 121. Further, the connecting seat 124 is provided with a locking screw, which can penetrate the connecting shaft 220, thereby realizing the fixed connection structure between the connecting shaft 220 and the two connecting seats 124. In different embodiments, the specific number and specific mounting position of the connecting seat 124 can be adaptively adjusted according to actual use requirements, and the utility model does not make specific limitations.

[0034] In the embodiment, the driver 210 is preferably a rotary motor, one end of the connecting shaft 220 is connected to the working end of the driver 210, and the other end penetrates the sealing mechanism 100. The middle part of the connecting shaft 220 is fixedly connected with the connecting seat 124, and both ends thereof are respectively penetrated by the valve body 110. Based on this, the connecting shaft 220 and the valve piece assembly 120 rotate synchronously, and can rotate relative to the valve body 110. In other embodiments, the driver 210 can also be configured as other structures with rotary driving effect by manual operation or automatic control, and the utility model does not make specific limitations.

[0035] Specifically, the driving mechanism 200 further comprises a fixed shaft sleeve 260 and a self-lubricating bearing 280, the self-lubricating bearing 280 is arranged inside the fixed shaft sleeve 260, the fixed shaft sleeve 260 is fixedly connected to the valve body 110, and the end of the connecting shaft 220 away from the driver 210 penetrates into the self-lubricating bearing 280 of the fixed shaft sleeve 260 to be rotatably connected to the valve body 110. Further, the driving mechanism 200 further comprises a disconnection piece 270, the disconnection piece 270 is connected to the fixed shaft sleeve 260 in the axial direction of the connecting shaft 220 and abuts against the connecting shaft 220, and thus, when the connecting shaft 220 cannot penetrate through the fixed shaft sleeve 260 due to the mismatch of the diameters of the fixed shaft sleeve 260 and the connecting shaft 220, the abutment between the connecting shaft 220 and the fixed shaft sleeve 260 can be achieved by adjusting the insertion length of the disconnection piece 270 inside the fixed shaft sleeve 260, thereby achieving the axial positioning of the connecting shaft 220. In addition, based on the arrangement of the disconnection piece 270, when the connecting shaft 220 is stuck or even completely stuck in rotation, the disconnection piece 270 can be disassembled to connect the inside of the fixed shaft sleeve 260 to the outside, and then the connecting shaft 220 can be pushed out by an external tool, thereby simplifying the disassembly and maintenance process. Specifically, the disconnection piece 270 can be configured as a screw, a screw or other structures with detachable penetrating connection function, and the utility model does not make specific limitations on this.

[0036] Correspondingly, the driving mechanism 200 further comprises an adapter seat 230 for realizing the connection stability between the connecting shaft 220 and the driver 210. Further, the adapter seat 230 is arranged between the driver 210 and the valve body 110, one end of the connecting shaft 220 is connected to the driver 210, and the other end penetrates into the inside of the valve body 110 through the adapter seat 230. The adapter seat 230 can enhance the connection stability between the connecting shaft 220 and the driver 210, thereby reducing the connection loosening or displacement caused by vibration, impact and other factors, ensuring the reliability of power transmission, thereby improving the working stability and reliability of the entire sealing mechanism 100. Specifically, the adapter seat 230 is internally provided with a positioning shaft sleeve 240 and a shaft body sealing ring 250, the positioning shaft sleeve 240 is connected to the inner wall of the adapter seat 230, the connecting shaft 220 penetrates through the positioning shaft sleeve 240, and the sealing ring 250 is sleeved on the connecting shaft 220 and located inside the positioning shaft sleeve 240. The sealing ring 250 is preferably an "O" shaped silica gel ring, which can prevent impurities from entering the inside of the valve body 110, and can also reduce the corrosion and wear of the connecting shaft 220 and the positioning shaft sleeve 240, prolong the service life of them, and reduce the replacement cost and maintenance cost of the equipment. Embodiment two

[0037] The embodiment provides a gas transmission assembly, which comprises the airtight valve of the embodiment one.

[0038] The airtight valve and the gas transmission assembly have the advantages that the sealing ring 123 can abut against the inner wall of the valve body 110 in an interference fit to form a high sealing structure for the valve body 110 in the process of driving the valve plate to rotate by the driving mechanism 200. The structure is simple in arrangement, and various elements are high in cooperation degree, so that the problem of excessive flow deviation of a sealing system or even overall failure caused by element error accumulation can be fundamentally avoided. Compared with conventional valve body mechanisms at the present stage, the airtight valve has the advantages of flexible use, convenient operation, low production cost, convenient post-maintenance, wide use range and the like, and has a wide use prospect in the industry.

[0039] Obviously, the above embodiment is only an example for clearly illustrating, and is not a limitation to the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. All the embodiments do not need to be exhausted here. The obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. An air-tight valve characterized by: The utility model relates to a gas-tight valve, comprising: a sealing mechanism, which comprises a valve body and a valve disc assembly arranged inside the valve body, the valve disc assembly comprising a sealing ring, a first leaf and a second leaf arranged concentrically along the thickness direction of the valve disc assembly, wherein a connecting seat is arranged on the first leaf or the second leaf, the sealing ring is clamped and fixed between the first leaf and the second leaf, and the edge of the sealing ring protrudes from the leaf to abut against the inner wall of the valve body by interference; a driving mechanism, which comprises a driver and a connecting shaft connected to the working end of the driver and the connecting seat respectively to drive the valve disc assembly to rotate around the axis of the connecting shaft.

2. The air-tight valve according to claim 1, characterized in that: The valve disc assembly comprises two or more connecting seats arranged axially along the connecting shaft, and the two or more connecting seats are connected to the same leaf.

3. The air-tight valve of claim 1, wherein: The valve body comprises a main body and a connecting flange, the sealing mechanism is arranged in the main body, and the connecting flange is fixedly arranged at the edge of the main body to connect an external mounting surface.

4. The air-tight valve of claim 1, wherein: The middle part of the connecting shaft is fixedly connected to the connecting seat, and the two ends of the connecting shaft respectively pass through the valve body.

5. The air-tight valve according to claim 1 or 4, characterized in that: The driving mechanism further comprises a fixed shaft sleeve and a self-lubricating bearing, the self-lubricating bearing is arranged inside the fixed shaft sleeve, the fixed shaft sleeve is fixedly connected to the valve body, the connecting shaft passes through the self-lubricating bearing of the fixed shaft sleeve to be rotatably connected to the valve body.

6. The air-tight valve according to claim 5, characterized in that: The driving mechanism further comprises a disconnection piece, the disconnection piece is connected to the fixed shaft sleeve axially along the connecting shaft and abuts against the connecting shaft.

7. The air-tight valve of claim 1, wherein: The driving mechanism further comprises an adapter seat, the adapter seat is arranged between the driver and the valve body, one end of the connecting shaft is connected to the driver, and the other end of the connecting shaft passes through the adapter seat and is arranged inside the valve body.

8. The air-tight valve according to claim 7, characterized in that: The driving mechanism further comprises a positioning shaft sleeve and a shaft body sealing ring, the positioning shaft sleeve is connected to the inner wall of the adapter seat, the connecting shaft passes through the positioning shaft sleeve, and the sealing ring is sleeved on the connecting shaft and arranged inside the positioning shaft sleeve.

9. A gas transfer assembly, characterized by: The utility model relates to a gas-tight valve.

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