Novel zero-leakage bypass sealing device

Abstract

The utility model discloses a novel zero-leakage bypass sealing device, and relates to the field of bypass sealing devices. According to the novel zero-leakage bypass sealing device, the valve seat is installed at the position of the partition plate in the dust remover, a bypass flue does not need to be additionally arranged for arranging the valve, and the construction and operation cost is reduced. According to the novel zero-leakage bypass sealing device, the valve seat is installed at the position of the partition plate in the dust remover, a bypass flue does not need to be additionally arranged for arranging the valve, the construction and operation cost is reduced, meanwhile, the valve plate at the bottom end can be driven to seal the inner valve seat under the cooperation of the air cylinder at the top end, and the sealing effect is good. The inner cylinder, the outer cylinder, the upper valve plate and the lower valve plate form a sealed cavity, raw flue gas is prevented from entering the purified flue gas channel through the space, sealing air directly introduces external air into the sealed cavity through the air pipe, no leakage is achieved, and then the purpose that the raw flue gas is prevented from directly entering the purified flue gas to cause excessive emission can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a novel zero-leakage bypass sealing device. Background Art

[0002] The external bypass is to set a bypass pipeline between the inlet and outlet flues of the dust collector, and directly seal and isolate the inlet and outlet flues of the bag filter through the installed sealing device to achieve the isolation effect of the original flue gas and the clean flue gas;

[0003] When a bypass is reserved in the dust collector, a single-layer valve plate or a double-layer valve plate structure with a sealed fan is currently used for sealing. The former is difficult to achieve a zero-leakage sealing effect due to slight air leakage between the sealing strip and the valve plate. The double-layer valve plate structure with a sealed fan needs to be arranged on the bypass duct, which increases the construction and operation costs and is difficult to promote and use, resulting in a poor sealing effect. It cannot well seal the untreated raw flue gas and the clean flue gas, causing the untreated raw flue gas to fail to meet emission standards. In view of the shortcomings of the existing technology, we propose a new zero-leakage bypass sealing device to solve the above problems. Utility Model Content

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions: a novel zero-leakage bypass sealing device, comprising a dust collector and a partition fixedly installed on the inner wall of the dust collector, a sealing unit is arranged at the partition, the sealing unit comprises a valve seat, the valve seat is fixedly welded and installed on the partition, the partition is located in the middle of the valve seat, the upper part of the partition is clean flue gas, and the lower part is original flue gas, a valve plate body is arranged at the top of the valve seat, the valve plate body is composed of an upper valve plate, a nut, a lower valve plate, a spring seat and a spring body, a driving unit is arranged at the top of the valve plate body, the driving unit drives the valve plate body to move downward when working so that the upper valve plate and the lower valve plate seal the valve seat to form a closed space, and the clean flue gas is isolated from the original flue gas by the upper valve plate and the lower valve plate;

[0005] An air pipe is provided on one side of the valve seat, one end of the air pipe is connected to the inside of the valve seat, and external air is introduced into the inside of the valve seat through the air pipe.

[0006] Preferably, the support plate is fixedly welded inside the dust collector, the inner cylinder and the outer cylinder are both welded to the support plate, and the retaining ring is fixedly welded to the support plate and the outer cylinder respectively.

[0007] Preferably, the valve seat is composed of an inner tube, a support plate, an outer tube, a sealing strip and a retaining ring, the inner tube is located at the bottom end of the outer tube, the bottom end surface of the lower valve plate fits with the top end of the inner tube, and the bottom end surface of the upper valve plate fits with the top end of the outer tube.

[0008] Preferably, the sealing strips are fixedly installed inside the grooves provided at the top ends of the inner tube and the outer tube.

[0009] Preferably, the driving unit comprises a base and a bracket installed at the top of the dust collector, a cylinder is installed at the top of the bracket, and a valve stem is fixedly connected to the output end of the cylinder.

[0010] Preferably, the upper valve plate is fixedly mounted on the top end of the valve stem by clamping nuts up and down, and a spring seat and a spring body are fixedly mounted on the bottom end of the upper valve plate.

[0011] Preferably, the spring seat is fixedly mounted on the end of the spring body, and the lower valve plate is fixedly connected to the spring seat at the bottom end of the spring body via a nut.

[0012] The utility model discloses a novel zero-leakage bypass sealing device, which has the following beneficial effects: the novel zero-leakage bypass sealing device, by installing the valve seat at the internal partition of the dust collector, does not need to add a bypass flue to arrange the valve, thereby reducing the cost of construction and operation, and at the same time, with the cooperation of the top cylinder, can drive the valve plate at the bottom to seal the internal valve seat, so that a sealed cavity is formed between the inner tube, the outer tube and the upper valve plate and the lower valve plate, thereby preventing the original flue gas from entering the clean flue gas channel through this space, and the sealing wind adopts an air pipe to directly introduce the external air into the sealed cavity, thereby achieving zero leakage, thereby achieving the purpose of preventing the original flue gas from directly entering the clean flue gas and causing excessive emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the air pipe and the outer cylinder of the utility model;

[0016] Figure 3 This is a schematic diagram of the valve seat structure of the utility model;

[0017] Figure 4 This is a schematic diagram of the valve plate structure of the utility model.

[0018] In the figure: 1. dust collector; 101. cylinder; 2. bracket; 3. base; 4. valve stem; 5. valve plate body; 501. upper valve plate; 502. nut; 503. lower valve plate; 504. spring seat; 505. spring body; 6. partition; 7. valve seat; 701. inner tube; 702. support plate; 703. outer tube; 704. sealing strip; 705. retaining ring; 8. air pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are 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.

[0020] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] The utility model embodiment discloses a novel zero-leakage bypass sealing device.

[0022] According to the attached Figure 1-4 As shown, it includes a dust collector 1 and a partition 6 fixedly installed on the inner wall of the dust collector 1, a sealing unit is arranged at the partition 6, and the sealing unit includes a valve seat 7, the valve seat 7 is fixedly welded and installed on the partition 6, the partition 6 is located in the middle of the valve seat 7, the upper part of the partition 6 is clean flue gas, and the lower part is original flue gas, a valve plate body 5 is arranged on the top of the valve seat 7, the valve plate body 5 is composed of an upper valve plate 501, a nut 502, a lower valve plate 503, a spring seat 504 and a spring body 505, and a driving unit is arranged on the top of the valve plate body 5, and the driving unit drives the valve plate body 5 to move downward when working The upper valve plate 501 and the lower valve plate 503 are used to seal the valve seat 7 to form a closed space, and the clean flue gas is isolated from the original flue gas by the upper valve plate 501 and the lower valve plate 503; by starting the cylinder 101 at the top, the valve stem 4 at the bottom drives the valve plate body 1 to move downward as a whole, and then the top of the bottom inner cylinder 701 can be sealed by the lower valve plate 503 at the bottom, and the upper valve plate 501 at the top moves down to the top of the outer cylinder 703, so that a sealed cavity is formed between the inner cylinder 701, the outer cylinder 703 and the upper valve plate 501 and the lower valve plate 503.

[0023] An air pipe 8 is provided on one side of the valve seat 7, one end of which is connected to the inside of the valve seat 7. External air is introduced into the inside of the valve seat 7 through the air pipe 8, and is connected to the external atmosphere through one end of the air pipe 8. The enclosed space is filled with clean air. When there is a micro-leakage between the valve plate 5 and the valve seat 7, since both the original flue gas and the clean flue gas are in a negative pressure state, the air in the enclosed space is automatically discharged to the clean flue gas and the original flue gas through the micro-leakage under the action of atmospheric pressure, and the external air is supplemented into the closed cavity through the air pipe 8, which prevents the original flue gas from directly entering the clean flue gas due to micro-leakage, thereby affecting the standard emission of the flue gas.

[0024] The valve seat 7 is composed of an inner cylinder 701, a support plate 702, an outer cylinder 703, a sealing strip 704 and a retaining ring 705. The inner cylinder 701 is located at the bottom end of the outer cylinder 703. The bottom end surface of the lower valve plate 503 fits with the top end of the inner cylinder 701, and the bottom end surface of the upper valve plate 501 fits with the top end of the outer cylinder 703. It should be noted that when the cylinder 101 drives the lower valve plate 501 and the lower valve plate 503 at the bottom to seal the valve seat 7, the lower valve plate 501 at the bottom is firstly 3 is in contact and sealed with the top of the inner cylinder 701. At this time, the driving cylinder 101 continues to work, and then the upper valve plate 501 at the top can seal the top of the outer cylinder 703 under the cooperation of the deformation of the spring body 505, so that the upper valve plate 501 and the lower valve plate 503 are always in contact with the top of the inner cylinder 701 and the outer cylinder 703, thereby improving the sealing effect of the sealed cavity formed between the inner cylinder 701, the outer cylinder 703 and the upper valve plate 501, the lower valve plate 503.

[0025] The support plate 702 is fixedly welded inside the dust collector 1, the inner cylinder 701 and the outer cylinder 703 are both welded on the support plate 702, the retaining ring 705 is respectively fixedly welded on the support plate 702 and the outer cylinder 703, and the sealing strip 704 is fixedly installed inside the grooves opened at the top ends of the inner cylinder 701 and the outer cylinder 703.

[0026] The driving unit includes a base 3 and a bracket 2 installed at the top of the dust collector 1. A cylinder 101 is installed at the top of the bracket 2. The output end of the cylinder 101 is fixedly connected to the valve stem 4. The upper valve plate 501 is fixedly installed on the top of the valve stem 4 by clamping the nut 502 up and down. The bottom of the upper valve plate 501 is fixedly installed with a spring seat 504 and a spring body 505.

[0027] The spring seat 504 is fixedly mounted on the end of the spring body 505 , and the lower valve plate 503 is fixedly connected to the spring seat 504 at the bottom end of the spring body 505 via a nut 502 .

[0028] As described above, the new zero-leakage bypass sealing device, by installing the valve seat at the internal partition of the dust collector, does not need to add an additional bypass flue to arrange the valve, thereby reducing the cost of construction and operation. At the same time, with the cooperation of the top cylinder, it can drive the valve plate at the bottom to seal the internal valve seat, so that a sealed cavity is formed between the inner tube, the outer tube and the upper valve plate and the lower valve plate, thereby preventing the original flue gas from entering the clean flue gas channel through this space. The sealing wind adopts an air pipe to directly introduce the external air into the sealed cavity to achieve zero leakage, thereby preventing the original flue gas from directly entering the clean flue gas and causing excessive emissions.

[0029] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel zero-leakage bypass sealing device, comprising a dust collector (1) and a partition (6) fixedly mounted on the inner wall of the dust collector (1), characterized in that: A sealing unit is provided at the partition (6), and the sealing unit comprises a valve seat (7). The valve seat (7) is fixedly welded and installed on the partition (6). The partition (6) is located in the middle of the valve seat (7). The upper part of the partition (6) is clean flue gas, and the lower part is raw flue gas. A valve plate body (5) is provided at the top of the valve seat (7). The valve plate body (5) is composed of an upper valve plate (501), a nut (502), a lower valve plate (503), a spring seat (504) and a spring body (505). A driving unit is provided at the top of the valve plate body (5). When the driving unit works, it drives the valve plate body (5) to move downward so that the upper valve plate (501) and the lower valve plate (503) seal the valve seat (7) to form a closed space, and the clean flue gas is isolated from the raw flue gas by the upper valve plate (501) and the lower valve plate (503). An air pipe (8) is provided on one side of the valve seat (7), one end of the air pipe (8) is connected to the interior of the valve seat (7), and external air is introduced into the interior of the valve seat (7) through the air pipe (8).

2. A novel zero-leakage bypass sealing device according to claim 1, characterized in that: The valve seat (7) is composed of an inner tube (701), a support plate (702), an outer tube (703), a sealing strip (704) and a retaining ring (705); the inner tube (701) is located at the bottom end of the outer tube (703); the bottom end surface of the lower valve plate (503) is in contact with the top end of the inner tube (701); and the bottom end surface of the upper valve plate (501) is in contact with the top end of the outer tube (703).

3. A novel zero-leakage bypass sealing device according to claim 2, characterized in that: The support plate (702) is fixedly welded inside the dust collector (1), the inner cylinder (701) and the outer cylinder (703) are both welded to the support plate (702), and the retaining ring (705) is respectively fixedly welded to the support plate (702) and the outer cylinder (703).

4. A novel zero-leakage bypass sealing device according to claim 3, characterized in that: The sealing strips (704) are fixedly mounted inside the grooves provided at the top ends of the inner tube (701) and the outer tube (703).

5. A novel zero-leakage bypass sealing device according to claim 4, characterized in that: The driving unit comprises a base (3) and a bracket (2) mounted on the top of the dust collector (1); a cylinder (101) is mounted on the top of the bracket (2); and a valve stem (4) is fixedly connected to the output end of the cylinder (101).

6. A novel zero-leakage bypass sealing device according to claim 5, characterized in that: The upper valve plate (501) is fixedly mounted on the top end of the valve stem (4) by means of nuts (502) clamped up and down, and a spring seat (504) and a spring body (505) are fixedly mounted on the bottom end of the upper valve plate (501).

7. A novel zero-leakage bypass sealing device according to claim 1, characterized in that: The spring seat (504) is fixedly mounted on the end of the spring body (505), and the lower valve plate (503) is fixedly connected to the spring seat (504) at the bottom end of the spring body (505) via a nut (502).

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