Tail gas diffusion control valve of carbon black main filter bag device

Abstract

The utility model relates to a tail gas emission control valve of a carbon black main filter bag device, which belongs to the technical field of carbon black tail gas emission and comprises a valve body, a cover plate, a cover plate seat and an actuating mechanism. The top of the valve body is provided with a pressure relief opening used for pressure relief. The cover plate is arranged at the top of the valve body, is tightly connected with the pressure relief opening and is used for blocking the pressure relief opening; the contact part of the cover plate and the pressure relief opening is of an inverted trapezoidal structure; when the air pressure in the valve body is too high, the cover plate is jacked open by gas to open the pressure relief opening, and the gas flows out from the two sides of the inverted trapezoidal structure; the cover plate seat is installed on the top of the valve body and used for being detachably connected with the cover plate. An opening communicated with the pressure relief opening is formed in the cover plate seat, and the shape of the opening is matched with the inverted trapezoidal structure of the cover plate; the executing mechanism is connected with the cover plate and used for controlling the cover plate to be opened or closed. According to the tail gas diffusion control valve, the contact area of the cover plate and the pressure relief opening can be increased, the sealing performance of the cover plate is improved, and gas leakage caused by poor sealing is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbon black tail gas emission, and in particular relates to a tail gas emission control valve of a carbon black main filter bag device. Background Art

[0002] In the carbon black production process, the main bag filter is used to separate powdered carbon black and carbon black tail gas. When the main bag is started, the tail gas release valve of the main bag needs to be opened to ensure that the pressure inside the main bag meets the start-up requirements; during the normal operation of the main bag, the tail gas release valve of the main bag needs to be closed to ensure that the tail gas is not discharged into the air to prevent the tail gas from polluting the air; when the tail gas in the main bag is over-pressured, the tail gas release valve of the main bag should be opened in time to ensure the safe operation of the main bag. In addition, there are flammable components in the carbon black tail gas. When the pressure inside the main bag filter is within its pressure tolerance index range, the sealing of the cover plate and the cover plate seat is particularly important.

[0003] In the prior art, such as Figure 1 As shown in FIG. 1 , the conventional main bag filter relief valve includes a valve body, a flat cover seat, a flat cover, and an actuator. When the pressure in the box reaches a certain limit, the gas will push open the cover, such as Figure 2 As shown, the gas leaks out from the gap between the cover plate seat and the cover plate, thereby achieving the purpose of pressure relief and ensuring the safety of the main bag filter equipment itself. However, the contact area between the cover plate and the cover plate seat of the traditional main bag filter relief valve is very small. Once the meshing degree between the cover plate and the cover plate seat is insufficient at a certain point, leakage will occur; and the running track of the cover plate is fan-shaped. Due to the tensile force of the actuator, the center of gravity of the cover plate is all used for support, and the gravity, the force and the running track are not in the same direction. After a long period of use, the support plate will be deformed due to the force, so that the cover plate and the cover plate seat cannot be on the same parallel plane, which is prone to leakage.

[0004] Therefore, how to solve the problem that the tail gas release control valve of the current carbon black main filter bag is prone to leakage is a technical problem that urgently needs to be solved. Utility Model Content

[0005] In view of the shortcomings existing in the prior art, the utility model provides an exhaust gas release control valve for a carbon black main filter bag. Through the inverted trapezoidal structure of the contact part between the cover plate and the pressure relief port, the contact area between the cover plate and the pressure relief port is increased, the sealing performance of the cover plate is improved, and gas leakage caused by poor sealing during normal operation is effectively prevented.

[0006] The utility model provides an exhaust gas release control valve for a carbon black main filter bag device, comprising:

[0007] A valve body, the top of which is provided with a pressure relief port for pressure relief;

[0008] The cover plate is arranged on the top of the valve body and is tightly connected to the pressure relief port to seal the pressure relief port. The portion of the cover plate in contact with the pressure relief port is in an inverted trapezoidal structure. When the gas pressure inside the valve body is too high, the gas pushes the cover plate open to open the pressure relief port, and the gas flows out through both sides of the inverted trapezoidal structure.

[0009] The cover plate seat is installed on the top of the valve body and is used for detachable connection with the cover plate; the cover plate seat is provided with an opening which is connected with the pressure relief port, and the shape of the opening matches the inverted trapezoidal structure of the cover plate;

[0010] The actuator is connected to the cover and is used to control the cover to open or close.

[0011] The technical solution increases the contact area between the cover plate and the pressure relief port and improves the sealing performance of the cover plate through the inverted trapezoidal structure of the contact part between the cover plate and the pressure relief port, thereby effectively preventing gas leakage caused by poor sealing during normal operation; when the air pressure inside the valve body is too high, the gas can push open the cover plate and flow out through the two sides of the inverted trapezoidal structure, thereby ensuring safe pressure relief under overpressure conditions and avoiding unnecessary wear on the cover plate and the pressure relief port.

[0012] In some embodiments, the exhaust gas release control valve of the carbon black main filter bag further includes a traction member, one end of which is vertically connected to the cover plate, and the other end is connected to the actuator, and is used to pull the cover plate to open or close in the vertical direction according to the action of the actuator. This technical solution can be opened or closed in the vertical direction according to the action of the actuator, avoiding unnecessary friction with the pressure relief port.

[0013] In some embodiments, the exhaust gas release control valve of the carbon black main filter bag further includes a cover plate frame, which is arranged above the cover plate seat and is used to limit the position of the traction member so that the traction member and the cover plate are always vertically connected. This technical solution can ensure that the traction member and the cover plate are always vertically connected, avoiding inaccurate operation or air leakage caused by the displacement of the traction member.

[0014] In some embodiments, the tail gas emission control valve support of the carbon black main filter bag is installed above the cover frame to support the traction member. This technical solution can reduce the swing of the traction member during movement and maintain the movement stability of the traction member.

[0015] In some embodiments, at least two support members are provided, and one of the support members is provided at an edge of the cover frame close to the actuator. This technical solution can achieve the beneficial effect of optimizing the force of the traction member during the traction process.

[0016] In some embodiments, a protrusion for mounting the support member is provided on one side of the support member close to the actuator. This technical solution can achieve the beneficial effect of optimizing the force applied to the traction member during the traction process.

[0017] In some embodiments, the support member includes a pulley. This technical solution can reduce the operating resistance, reduce the friction of the traction member, and make the opening and closing of the cover plate smoother.

[0018] In some embodiments, the actuator includes a cylinder. This technical solution can provide a stable and controllable power source, ensuring that the staff can smoothly operate when they need to actively control the cover to open or close.

[0019] Based on the above scheme, the exhaust gas release control valve of the carbon black main filter bag in the embodiment of the utility model increases the contact area between the cover plate and the pressure relief port through the inverted trapezoidal structure of the contact part between the cover plate and the pressure relief port, improves the sealing performance of the cover plate, and effectively prevents gas leakage caused by poor sealing during normal operation; when the air pressure inside the valve body is too high, the gas can push open the cover plate and flow out through the two sides of the inverted trapezoidal structure, which can ensure safe pressure relief under overpressure conditions and avoid unnecessary wear of the cover plate and the pressure relief port; the actuator is connected to the cover plate, and the staff can actively control the opening or closing of the cover plate, thereby improving the operability of the exhaust gas release control valve. In summary, the technical solution provided in this embodiment can solve the problem of poor air leakage of the exhaust gas release control valve of the carbon black main filter bag and improve the safety and sealing of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 It is a schematic diagram of the structure of the tail gas release control valve of the carbon black main filter bag in the prior art;

[0022] Figure 2 It is a schematic diagram of the gas flow direction when the flat cover plate is opened in the prior art;

[0023] Figure 3 This is a schematic diagram of the structure of the tail gas release control valve of the carbon black main filter bag of the utility model;

[0024] Figure 4 It is a schematic diagram of the gas flow direction when the cover is opened in the embodiment of the utility model.

[0025] In the figure:

[0026] 1. Valve body; 02. Flat cover seat; 03. Flat cover; 4. Actuator;

[0027] 2. Cover plate seat; 3. Cover plate; 5. Cover plate frame; 6. Support member; 7. Traction member. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, 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 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 the present invention can be understood according to specific circumstances.

[0031] like Figure 3-Figure 4 As shown, in one embodiment of the exhaust gas release control valve of the carbon black main filter bag of the utility model, the exhaust gas release control valve of the carbon black main filter bag includes a valve body 1, a cover plate 3, a cover plate seat 2 and an actuator 4; wherein, a pressure relief port for pressure relief is provided on the top of the valve body 1; the cover plate 3 is arranged on the top of the valve body 1 and is tightly connected with the pressure relief port to seal the pressure relief port; the part of the cover plate 3 in contact with the pressure relief port is an inverted trapezoidal structure; when the internal air pressure of the valve body 1 is too high, the gas pushes open the cover plate 3 to open the pressure relief port, and the gas flows out through the two sides of the inverted trapezoidal structure; the cover plate seat 2 is installed on the top of the valve body 1, and is used to be detachably connected with the cover plate 3; the cover plate seat 2 is provided with an opening that passes through the pressure relief port, and the shape of the opening matches the inverted trapezoidal structure of the cover plate 3; the actuator 4 is connected to the cover plate 3, and is used to control the cover plate 3 to open or close.

[0032] In the above exemplary embodiment, the exhaust gas release control valve of the carbon black main filter bag increases the contact area between the cover plate 3 and the pressure relief port through the inverted trapezoidal structure of the contact part between the cover plate 3 and the pressure relief port, improves the sealing performance of the cover plate 3, and effectively prevents gas leakage caused by poor sealing during normal operation; when the air pressure inside the valve body 1 is too high, such as Figure 4As shown, the gas can push open the cover plate 3 and flow out through the two sides of the inverted trapezoidal structure, which can ensure safe pressure relief under overpressure conditions and avoid unnecessary wear of the cover plate 3 and the pressure relief port; the actuator 4 is connected to the cover plate 3, and the staff can actively control the opening or closing of the cover plate 3 when necessary, thereby improving the operability of the exhaust gas release control valve. In summary, the technical solution provided in this embodiment can solve the problem of bad air leakage of the exhaust gas release control valve of the carbon black main filter bag, improve the safety and sealing of the valve body 1, and ensure the safe operation of the main bag.

[0033] In some embodiments, Figure 3 As shown, the exhaust gas release control valve of the carbon black main filter bag device also includes a traction member 7, one end of which is vertically connected to the cover plate 3, and the other end is connected to the actuator 4, which is used to pull the cover plate 3 to open or close in the vertical direction according to the action of the actuator 4. Through the setting of the traction member 7, a direct traction connection is provided between the actuator 4 and the cover plate 3, ensuring that the cover plate 3 can be opened or closed in the vertical direction according to the action of the actuator 4, avoiding unnecessary friction with the pressure relief port.

[0034] Further, as an illustrative embodiment, Figure 3 As shown, the traction member 7 is a steel wire rope. As another exemplary embodiment, the traction member 7 is a chain. Steel wire rope and chain as materials of the traction member 7 provide different strength and durability options; the steel wire rope has good flexibility and high tensile bearing capacity, while the chain is more durable. In practical applications, people can choose a suitable material or a combination of different materials as the traction member 7 according to their needs, and the utility model does not limit the material of the traction member 7.

[0035] In some embodiments, Figure 3 As shown, the exhaust gas emission control valve of the carbon black main filter bag device also includes a cover plate 3 frame 5, which is set above the cover plate seat 2 and is used to limit the position of the traction member 7 so that the traction member 7 is always vertically connected to the cover plate 3. The position of the traction member 7 is limited by the cover plate 3 frame 5 to ensure that the traction member 7 is always vertically connected to the cover plate 3, thereby avoiding inaccurate operation or air leakage caused by the displacement of the traction member 7.

[0036] In some embodiments, Figure 3 As shown, the exhaust gas emission control valve of the carbon black main filter bag also includes a support member 6, which is installed above the cover plate 3 frame 5 and is used to support the traction member 7. Through the arrangement of the support member 6, the swing of the traction member 7 during the movement is reduced, and the movement stability of the traction member 7 is maintained.

[0037] In some embodiments, Figure 3As shown, two support members 6 are provided, one of which is arranged at the edge of the cover plate 3 frame 5 close to the actuator 4. By arranging one of the support members 6 at the edge of the cover plate 3 frame 5 close to the actuator 4, the force of the traction member 7 during the traction process is optimized.

[0038] In some embodiments, Figure 3 As shown, a protrusion for mounting the support member 6 is provided on one side of the support member 6 close to the actuator 4. The provision of the protrusion optimizes the force of the traction member 7 during the traction process.

[0039] Furthermore, if Figure 3 As shown, the support member 6 includes a pulley. By setting the pulley, the operation resistance is reduced, the friction of the traction member 7 is reduced, the opening and closing of the cover plate 3 is smoother, and the service life of the traction member 7 is extended.

[0040] In some embodiments, Figure 3 As shown, the actuator 4 includes a cylinder. The cylinder is used as the actuator 4 to provide a stable and controllable power source, ensuring that the staff can actively control the cover plate 3 to open or close when needed, so as to smoothly realize the operation.

[0041] Through the description of multiple embodiments of the exhaust gas release control valve of the carbon black main filter bag of the utility model, it can be seen that the exhaust gas release control valve embodiment of the carbon black main filter bag of the utility model has at least one or more of the following advantages:

[0042] 1. The exhaust gas release control valve of the carbon black main filter bag provided by the utility model increases the contact area between the cover plate 3 and the pressure relief port through the inverted trapezoidal structure of the contact part between the cover plate 3 and the pressure relief port, improves the sealing performance of the cover plate 3, and effectively prevents gas leakage caused by poor sealing during normal operation;

[0043] 2. The exhaust gas release control valve of the carbon black main filter bag provided by the utility model is connected to the cover plate 3 through the actuator 4, and the staff can actively control the opening or closing of the cover plate 3 when necessary, thereby improving the operability of the exhaust gas release control valve;

[0044] 3. The exhaust gas release control valve of the carbon black main filter bag provided by the utility model provides a direct traction connection between the actuator 4 and the cover plate 3 through the setting of the traction member 7, ensuring that the cover plate 3 can be opened or closed in the vertical direction according to the action of the actuator 4, avoiding unnecessary friction with the pressure relief port.

[0045] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0046] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for which protection is requested in the utility model.

Claims

1. An exhaust gas release control valve for a carbon black main filter bag, characterized in that: include: A valve body, the top of which is provided with a pressure relief port for pressure relief; A cover plate is arranged on the top of the valve body and is tightly connected to the pressure relief port to seal the pressure relief port; the portion of the cover plate in contact with the pressure relief port is in an inverted trapezoidal structure; when the air pressure inside the valve body is too high, the gas pushes the cover plate open to open the pressure relief port, and the gas flows out through both sides of the inverted trapezoidal structure; A cover plate seat is installed on the top of the valve body and is used for being detachably connected with the cover plate; the cover plate seat is provided with an opening that is connected with the pressure relief port, and the shape of the opening matches the inverted trapezoidal structure of the cover plate; An actuator is connected to the cover plate and is used to control the cover plate to open or close.

2. The tail gas emission control valve of the carbon black main filter bag according to claim 1 is characterized in that: It also includes a traction member, one end of which is vertically connected to the cover plate, and the other end is connected to the actuator, and is used to pull the cover plate to open or close in the vertical direction according to the action of the actuator.

3. The tail gas emission control valve of the carbon black main filter bag according to claim 2 is characterized in that: It also includes a cover plate frame, which is arranged above the cover plate seat and is used to limit the position of the traction member so that the traction member is always vertically connected to the cover plate.

4. The tail gas emission control valve of the carbon black main filter bag according to claim 3 is characterized in that: It also includes a support member, which is installed above the cover frame and is used to support the traction member.

5. The tail gas emission control valve of the carbon black main filter bag according to claim 4 is characterized in that: At least two support members are provided, and one of the support members is arranged at an edge of the cover frame close to the actuator.

6. The tail gas emission control valve of the carbon black main filter bag according to claim 4 is characterized in that: A protrusion for installing the support member is provided on one side of the support member close to the actuator.

7. The tail gas emission control valve of the carbon black main filter bag according to any one of claims 4 to 6, characterized in that: The support member includes a pulley.

8. The tail gas emission control valve of the carbon black main filter bag according to claim 1 is characterized in that: The actuator includes a cylinder.

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