An adsorption concentration wheel sealing system

Abstract

The present invention discloses an adsorption concentration rotor sealing system. It includes an elastic sealing body for contact sealing of the sealing surface and a connecting member for installing the elastic sealing body. The elastic sealing body is an annular structure and has an air cavity. A groove plate for cooperating with the air cavity is installed on the elastic sealing body. After adopting the above structure, compressed air can be introduced into the air cavity by using a quick connector, so that the elastic sealing body is always pressed against the sealing surface. Even if the elastic sealing body is worn or the elastic performance is reduced, the elastic sealing body can still be pressed against the sealing surface by adjusting the pressure, thereby ensuring the sealing effect and extending the service life. At the same time, the elastic sealing body can be designed according to needs and can also be used for circumferential and partition zone sealing of the adsorption concentration rotor, realizing multi-occasion sealing of the adsorption concentration rotor.

Description

Technical Field

[0001] The present invention relates to a gas isolation and sealing technology for using a honeycomb rotor to adsorb and remove gases such as organic solvent vapor from exhaust gas in factories, etc., and more specifically to an adsorption and concentration rotor sealing system. Background Art

[0002] With the continuous development of industrialization and the severe haze, people are increasingly concerned about ambient air quality. Some VOCs, such as benzene and formaldehyde, are not only toxic but also pose a risk of cancer. Some VOCs undergo photochemical oxidation to form photochemical smog and secondary organic aerosols. Secondary organic aerosols are a significant component of PM 2.5. Photochemical smog and PM 2.5 contribute to haze weather, negatively impacting visibility. Some VOCs, such as chlorofluorocarbons, directly deplete atmospheric ozone, contributing to the ozone hole.

[0003] In recent years, industrial VOCs treatment technologies have made further progress, such as combustion, low-temperature plasma, photocatalytic oxidation, adsorption, and biological methods. The simplest method for purifying VOC-contaminated air is to use a tower filled with adsorbents such as activated carbon to adsorb and separate the polluted air. Due to the limited adsorption capacity of the adsorbents filled in the adsorption tower, two or more towers need to be switched. This method has the advantages of low investment and operating costs for low VOCs concentrations and small amounts of air pollution. However, for industrial production processes that emit large amounts of VOCs polluted air or where VOCs concentrations exceed tens of ppm, there are disadvantages such as high equipment investment and operating costs.

[0004] Compared with ordinary fixed-bed adsorbers, the biggest advantage of adsorption concentration rotors is that they occupy a smaller area, especially the cylindrical rotors. Since they combine the pretreatment, adsorption and desorption, and catalytic combustion processes of exhaust gas into an integrated device for exhaust gas treatment, they have the advantages of high purification efficiency, low operating costs, stable and reliable operation, etc., and have gradually become one of the users' preferred methods.

[0005] For such an adsorption concentration wheel, it is necessary to separate the wheel into an adsorption zone and a desorption zone. Poor sealing is a major problem in the application of the adsorption concentration wheel. The leakage of polluted gases causes secondary pollution of the adsorption concentration wheel, and the cross-wind between the functional zones causes the wind direction of the adsorption concentration wheel system to be turbulent, bringing the desorption heat to the adsorption zone, resulting in a significant decrease in the removal rate of the wheel system; at the same time, when the gas to be treated contains high-boiling-point substances with a boiling point between 200℃ and 300℃, or when high-boiling-point substances are produced due to polymerization reactions during adsorption, desorption air close to the boiling point temperature needs to be transported during desorption. When using high-temperature resistant rubber elastic materials, the elastic properties of rubber decrease at high temperatures. The effect of sealing achieved by relying solely on elasticity will deteriorate, affecting the adsorption performance of the wheel. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an adsorption concentration wheel sealing system which can achieve circumferential and partition zone sealing of the adsorption concentration wheel, improve the sealing effect, and extend the service life.

[0007] In order to solve the above technical problems, the adsorption concentration wheel sealing system of the present invention includes an elastic sealing body for contact sealing the sealing surface and a connecting component for installing the elastic sealing body. The elastic sealing body is an annular structure and has an air cavity. The elastic sealing body is equipped with a groove plate for cooperating with the air cavity.

[0008] The groove plate is connected with a quick connector, and a control valve capable of controlling the compressed air pressure is installed on the air inlet pipe of the quick connector. The elastic sealing body is pressed against the sealing surface and the compressed air can be introduced into the air cavity through the quick connector.

[0009] The connecting component includes an inner clamping plate installed on the inner end surface of the elastic sealing body, an outer clamping plate installed on the outer end surface of the elastic sealing body, and a fixing frame for connecting and fixing the outer clamping plate.

[0010] The outer clamping plate is pressed and fixed on the fixing frame by a pressing plate.

[0011] The control valve is a pressure reducing valve.

[0012] The trough plate is a U-shaped plate.

[0013] The sealing surface is the end face of the attached concentration runner, the elastic sealing body is an annular rubber part with an H-shaped cross-section, the air cavity of the annular rubber part is formed with two upper cavities and a lower cavity with openings, and air vents are arranged between the upper and lower cavities. The groove plate is encapsulated at the opening of the lower cavity and can pass compressed gas into the lower cavity through a quick connector. The compressed gas can enter the upper cavity through the air vent, thereby expanding the upper cavity and causing the opening of the upper cavity to swell outward and press against the end face of the attached concentration runner.

[0014] The upper cavity of the annular rubber member has a cross-sectional structure with a narrow opening and a wide interior, while the lower cavity of the annular rubber member has a cross-sectional structure with a wide opening and a narrow interior.

[0015] The sealing surface is the boundary surface of the separation area between the adsorption area and the desorption area. The elastic sealing body is an annular rubber part with a U-shaped cross-section. The groove plate is encapsulated at the opening of the annular rubber part and can use a quick connector to introduce compressed gas into the air cavity. The introduced compressed gas can expand the air cavity and thereby press the annular rubber part against the boundary surface of the separation area between the adsorption area and the desorption area.

[0016] The cross-sectional shape of the top surface of the annular rubber member is an external contour structure with a high middle and low edges.

[0017] After adopting the above structure, due to the annular structure and the elastic sealing body with an air cavity and the quick connector connected to the groove plate, compressed air can be introduced into the air cavity using the quick connector, so that the elastic sealing body is always pressed against the sealing surface. Even if the elastic sealing body is worn or the elastic performance is reduced, the elastic sealing body can be adjusted to still be pressed against the sealing surface, thereby ensuring the sealing effect and extending the service life. At the same time, the elastic sealing body can be designed according to needs and can also be used for circumferential and partition zone sealing of the adsorption concentration wheel, realizing multi-occasion sealing of the adsorption concentration wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the use status of the first embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the usage status of the second embodiment of the present invention. DETAILED DESCRIPTION

[0020] The adsorption and concentration rotor sealing system of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1:

[0022] like Figure 1As shown, the adsorption concentration rotor sealing system of this embodiment is a sealing device applied to the end face of the attached concentration rotor, which includes an elastic sealing body 1 for contact sealing the end face (circumferential seal) of the attached concentration rotor and a connecting member 2 for installing the elastic sealing body. Figure 1 It can be seen that the connecting member 2 includes an inner clamping plate 7 installed on the inner end face of the elastic sealing body, an outer clamping plate 8 installed on the outer end face of the elastic sealing body, and a fixing frame 9 for connecting and fixing the outer clamping plate. The outer clamping plate 8 is fixedly mounted on the fixing frame 9 by a pressing plate 10. The elastic sealing body 2 is an annular structure and has an air cavity. A groove plate 3 for cooperating with the air cavity is installed on the elastic sealing body 1. The groove plate 3 is an annular U-shaped plate. A quick connector 4 is connected to the groove plate 3. A pressure reducing valve capable of controlling the pressure of compressed air entering the air cavity is installed on the air inlet pipe 5 of the quick connector 4. The elastic The sealing body 1 is pressed against the end face of the attached concentration runner and can use a quick connector to pass compressed air into the air cavity. In addition, the elastic sealing body 1 is an annular rubber part with a roughly H-shaped cross-section. The air cavity of the annular rubber part is formed with two upper cavities 11 and a lower cavity 12 with openings. A vent 13 is arranged between the upper cavity 11 and the lower cavity 12. The groove plate 3 is encapsulated at the opening of the lower cavity and can pass compressed gas into the lower cavity through a quick connector. The compressed gas can enter the upper cavity through the vent, thereby expanding the upper cavity and then causing the opening of the upper cavity to swell outward and press against the end face of the attached concentration runner. In addition, the surface of the elastic sealing body with a certain labyrinth structure can be coated with Teflon with a low friction coefficient, a low linear expansion coefficient, and high temperature resistance. The elastic sealing body with a certain labyrinth structure cavity plays a sealing role. First, due to the high desorption temperature, the elastic sealing body is made of high-temperature resistant silicone rubber, and the surface of the elastic sealing body is coated with high-temperature resistance, low friction coefficient, and resistance to various organic solvents of VOCs. Specifically, the outer surface coating is Teflon, so it has high temperature resistance, non-flammability, and low linear expansion rate; second, the elastic sealing body and the surface of the runner form a dynamic sealing combination of the static surface and the dynamic surface, and the elastic sealing body and the suction are adjusted. The gap on the end surface of the concentration impeller not only achieves effective sealing, but also ensures the rotation of the impeller, realizing the cyclic operation of adsorption and desorption. The part of the elastic sealing body in contact with the impeller surface forms a U-shaped space with a maze structure, preventing further leakage of the gas. That is to say, the leakage of polluted air containing VOCs gas is prevented by the elastic sealing body with a certain maze structure, and a gas retention part is formed by the air cavity space. Since the thermal conductivity of air is low, the elastic sealing body has a certain heat insulation effect, so that only a small amount of heat in the desorption zone can be transferred to the adsorption zone, and the air cavity has a certain maze structure to further reduce leakage.

[0023] Furthermore, the upper cavity 11 of the annular rubber member has a cross-sectional structure with a narrow opening and a large interior width, while the lower cavity 12 of the annular rubber member has a cross-sectional structure with a wide opening and a narrow interior width.

[0024] The specific usage is as follows:

[0025] (1) Weld the quick connector 4 to the U-shaped groove plate 3;

[0026] (2) Place the U-shaped groove plate 3 into the elastic sealing body 1, and then connect the inner clamping plate 7 to one side of the U-shaped groove plate 3 with stainless steel rivets;

[0027] (3) Connect the outer clamping plate 8 to the other side of the U-shaped groove plate 3 with stainless steel rivets;

[0028] (4) Pre-assemble the elastic sealing body on the outer circumference;

[0029] (5) Adjust the gap between the elastic seal and the end surface of the runner until it is appropriate.

[0030] Example 2:

[0031] like Figure 2 As shown, the adsorption concentration rotor sealing system of this embodiment is a sealing device used in the separation zone of the adsorption concentration rotor, which includes an elastic sealing body 1 for contact sealing the sealing surface (separation zone seal) and a connecting member 2 for installing the elastic sealing body. The sealing surface in this embodiment is the boundary surface of the separation zone between the adsorption zone and the desorption zone, which is composed of Figure 2It can be seen that the connecting member 2 includes an inner clamping plate 7 installed on the inner end face of the elastic sealing body, an outer clamping plate 8 installed on the outer end face of the elastic sealing body, and a fixing frame 9 for connecting and fixing the outer clamping plate. The elastic sealing body and the inner clamping plate 7 as well as the elastic sealing body and the outer clamping plate 8 are connected by rivets. The inner clamping plate 7 and the outer clamping plate 8 are used to fix the elastic sealing body and form a closed gas retention space with the elastic sealing body to ensure that the sealing elastomer has a certain rigidity, so that the seal is reliable and has a certain heat insulation effect. The outer clamping plate 8 is fixedly installed on the fixing frame 9 by the pressing plate 10. The elastic sealing body 2 is an annular structure and has an air cavity. The elastic sealing body 1 is provided with a groove plate 3 for cooperating with the air cavity. The groove plate 3 is an annular U-shaped The gap between the plate, the groove plate 3 and the elastic sealing body is filled with high-temperature resistant sealant, the groove plate 3 is connected to the quick connector 4, and the air inlet pipe 5 of the quick connector 4 is installed with a gas pressure regulating valve that can control the pressure of the compressed air entering the air cavity. The gas pressure regulating valve can be used to adjust the pressure of the conveyed gas. The gas can be compressed air, nitrogen, etc. The elastic sealing body 1 is an annular rubber part with a U-shaped cross-section. The groove plate 3 is encapsulated at the opening of the annular rubber part and can use the quick connector to introduce compressed gas into the air cavity as needed. The introduced compressed gas can expand the air cavity and then press the annular rubber part against the boundary surface of the separation area between the adsorption zone and the desorption zone. The elastic force of the elastic sealing body in the separation area can be adjusted by the pressurized gas introduced.

[0032] Furthermore, the cross-sectional shape of the top surface of the annular rubber member is an external contour structure with a high middle and low edges.

[0033] In addition, in the present invention, for occasions with high sealing requirements, compressed air with a certain pressure can be introduced through the quick connector to block the wind between the desorption area and the adsorption area, and between the adsorption area and the surrounding areas of the rotor. The specific pressure can be adjusted by a pressure regulating valve, which has a better effect.

[0034] The specific usage is as follows:

[0035] (1) Weld the quick connector 4 to the U-shaped groove plate 3;

[0036] (2) Place the U-shaped groove plate 3 into the elastic sealing body 1, and then connect the inner clamping plate 7 to one side of the U-shaped groove plate 3 with stainless steel rivets;

[0037] (3) Connect the outer clamping plate 8 to the other side of the U-shaped groove plate 3 with stainless steel rivets;

[0038] (4) Pre-assemble the elastic sealing body 2 on the boundary between the adsorption zone and the desorption zone;

[0039] (5) Adjust the compressed air pressure at the outlet of the pressure reducing valve, fill it with compressed air, observe the gap between the elastic sealing body 2 and the end surface of the runner until it is appropriate, and record the pressure of the compressed air.

Claims

1. An adsorption concentration wheel sealing system, characterized by: The invention comprises an elastic sealing body (1) for contact sealing a sealing surface and a connecting member (2) for installing the elastic sealing body, wherein the elastic sealing body (1) is an annular structure and has an air cavity, and a groove plate (3) for being installed in cooperation with the air cavity is installed on the elastic sealing body (1); the sealing surface is the end surface of the adsorption concentration wheel, the elastic sealing body (1) is an annular rubber member with an H-shaped cross-section, and the air cavity of the annular rubber member is formed with an upper cavity (11) and a lower cavity (12) with two openings, and a vent hole (13) is arranged between the upper cavity (11) and the lower cavity (12), and the groove plate (3) is sealed at the opening of the lower cavity and can pass compressed gas into the lower cavity through a quick connector, and the compressed gas can enter the upper cavity through the vent hole, thereby expanding the upper cavity and causing the opening of the upper cavity to expand outward and press against the end surface of the adsorption concentration wheel.

2. The adsorption concentration wheel sealing system according to claim 1, characterized in that: A quick connector (4) is connected to the groove plate (3), and a control valve (6) capable of controlling the compressed air pressure is installed on the air inlet pipe (5) of the quick connector (4). The elastic sealing body (1) is pressed against the sealing surface and can use the quick connector to introduce compressed air into the air cavity.

3. The adsorption concentration wheel sealing system according to claim 1 or 2, characterized in that: The connecting member (2) comprises an inner clamping plate (7) mounted on the inner end surface of the elastic sealing body, an outer clamping plate (8) mounted on the outer end surface of the elastic sealing body, and a fixing frame (9) for connecting and fixing the outer clamping plate.

4. The adsorption concentration wheel sealing system according to claim 3, characterized in that: The outer clamping plate (8) is fixedly mounted on the fixing frame (9) by means of a pressing plate (10).

5. The adsorption concentration wheel sealing system according to claim 2, characterized in that: The control valve (6) is a pressure reducing valve.

6. The adsorption concentration wheel sealing system according to claim 5, characterized in that: The trough plate (3) is a U-shaped plate.

7. The adsorption concentration wheel sealing system according to claim 6, characterized in that: The upper cavity (11) of the annular rubber piece has a cross-sectional structure with a narrow opening and a large internal width of the upper cavity, and the lower cavity (12) of the annular rubber piece has a cross-sectional structure with a wide opening and a narrow internal width of the lower cavity.

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