Bypass structure of dust catcher

Abstract

The utility model relates to a bypass structure of a dust catcher in the technical field of dust catchers, which comprises a breather pipe, an inclined partition plate is arranged in an inner cavity of the breather pipe and divides the inner cavity of the breather pipe into a lower air inlet channel and an upper air outlet channel, and a valve seat is arranged on the plate face of the partition plate corresponding to the upper air outlet channel. The breather pipe is also provided with a valve structure for opening and closing the valve seat, so that when the temperature in the flue gas is too high or the flue gas contains more impurities, the flue gas is discharged from the valve seat; when the temperature in flue gas is too high or the flue gas contains more impurities, the flue gas can be opened through the valve structure, and at the moment, the flue gas in the lower gas inlet channel enters the upper exhaust channel through the valve seat to be exhausted, so that the flue gas entering the dust catcher along the lower gas inlet channel is reduced, and the phenomenon that working parts in the dust catcher are damaged due to too high temperature or blocked due to more impurities is delayed; therefore, the service life of working parts in the dust catcher is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of dust catchers, in particular to a bypass structure of a dust catcher. Background Art

[0002] Dust collector is a device that removes or reduces the amount of fly ash in flue gas. The types of dust removal devices can be divided into biological nanofilm dust suppression devices, cloud and mist dust suppression devices, bag dust removal devices, etc. They are used in chemical, petroleum, metallurgy, construction, mining, machinery, textile and other industries. As a type of dust removal device, dust collector is generally used in fields such as chemical industry with high dust pollutants in flue gas to alleviate the adverse effects of flue gas and dust on the atmospheric environment.

[0003] However, the service life of the internal working parts of the existing dust collector is short and they need to be replaced every once in a while. To address this problem, we found that the existing dust collector has only one air intake duct, and all the smoke in the air intake duct will enter the capture chamber. When the temperature of the smoke is too high or contains a lot of impurities, the above problem is more obvious; for this reason, we designed a bypass structure for the dust collector. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology, the utility model discloses a bypass structure of a dust catcher.

[0005] In order to achieve the above-mentioned invention object, the utility model adopts the following technical solutions:

[0006] A bypass structure for a dust collector comprises a vent pipe, wherein an inner cavity of the vent pipe is provided with an inclined partition which divides the inner cavity of the vent pipe into a lower air intake channel and an upper air exhaust channel, and a valve seat is provided on the plate surface of the partition corresponding to the upper air exhaust channel; the vent pipe is also provided with a valve structure for opening and closing the valve seat, so that when the temperature of the flue gas is too high or contains a lot of impurities, the flue gas can be discharged from the valve seat.

[0007] Preferably, the valve structure comprises a telescopic device disposed above the valve seat, the telescopic end of the telescopic device faces the valve seat, and a valve plate assembly is provided at the telescopic end of the telescopic device.

[0008] Preferably, the valve plate assembly includes a mounting rod coaxially arranged at the telescopic end of the telescopic device, and an upper valve plate and a lower valve plate are spaced apart on the lower section of the mounting rod, and the distance between the upper valve plate and the lower valve plate is less than the depth of the valve seat.

[0009] Preferably, the outer edges of the upper valve plate and the lower valve plate are both provided with flexible sealing portions to facilitate sealing cooperation with the valve seat.

[0010] Preferably, it also includes an air supply device capable of supplying air to the inner cavity of the valve seat corresponding to the space between the upper valve plate and the lower valve plate when the valve seat is in a closed posture, so as to prevent smoke in the lower air inlet channel from being discharged through the valve seat.

[0011] Preferably, the air supply device comprises a fan, an air pipe is provided at an air outlet end of the fan, and the air outlet end of the air pipe penetrates the side wall of the valve seat and is correspondingly connected to the inner cavity of the valve seat.

[0012] Preferably, the lower port of the valve seat is provided with a reduced diameter structure.

[0013] Due to the adoption of the above-mentioned technical solution, the utility model has the following beneficial effects:

[0014] 1. When the temperature of the smoke is too high or contains too many impurities, the valve structure can be opened. At this time, the smoke in the lower air inlet channel passes through the valve seat and enters the upper exhaust channel for discharge, reducing the dust entering the dust collector, delaying the damage of the internal working parts of the dust collector due to excessive temperature or blockage due to too many impurities, thereby extending the service life of the internal working parts of the dust collector;

[0015] 2. When the flue gas can be processed by the dust collector, by closing the valve structure and using the air supply device to make the valve seat corresponding to the space between the upper valve plate and the lower valve plate in a pressurized state, it can prevent the lower air inlet channel from entering the valve seat, so that the dust collector can process all the flue gas entering the ventilation pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 for Figure 1 A magnified view of the part I in the figure.

[0018] In the figure: 1. ventilation pipe; 11. lower air inlet channel; 12. upper exhaust channel; 2. partition; 3. valve seat; 31. reducing structure; 4. valve structure; 41. telescopic device; 42. valve plate assembly; 421. mounting rod; 422. upper valve plate; 423. lower valve plate; 424. flexible sealing part; 5. air supply device; 51. fan; 52. air pipe. DETAILED DESCRIPTION

[0019] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction.

[0020] Embodiment 1, in combination with the attached Figure 1 A bypass structure of a dust collector includes a vent pipe 1. The inner cavity of the vent pipe 1 is provided with an inclined partition 2. The partition 2 divides the inner cavity of the vent pipe 1 into a lower air inlet channel 11 and an upper exhaust channel 12. The partition 2 is provided with a valve seat 3 on the plate surface corresponding to the upper exhaust channel 12; the vent pipe 1 is also provided with a valve structure 4 for opening and closing the valve seat 3.

[0021] During specific use, the air outlet end of the ventilation pipe 1 is connected to the air inlet end of the dust collector. In this way, when the temperature in the flue gas is too high or contains too many impurities, the valve structure 4 opens. At this time, the air in the lower air inlet channel 11 passes through the valve seat 3 and enters the upper exhaust channel 12 for discharge, reducing the dust entering the dust collector, delaying the internal working parts of the dust collector from being damaged due to excessive temperature or blocked by too many impurities, thereby extending the service life of the internal working parts of the dust collector.

[0022] According to the diameter of the lower air inlet passage 11 , a plurality of valve seats 3 may be arranged on the partition plate 2 ; as required, the plurality of valve seats 3 may be evenly spaced along the length direction of the partition plate 2 .

[0023] Furthermore, the valve structure 4 includes a telescopic device 41 arranged above the valve seat 3, the telescopic end of the telescopic device 41 is toward the valve seat 3, and the telescopic end of the telescopic device 41 is provided with a valve plate assembly 42; such a configuration allows the telescopic device 41 to be extended, so that the valve plate assembly 42 moves toward the valve seat 3, thereby completing the sealing operation of the valve seat 3, and the telescopic device 41 can be contracted to move the valve plate assembly 42 away from the valve seat 3, thereby completing the opening operation of the valve seat 3.

[0024] Furthermore, in order to ensure the sealing effect between the valve plate assembly 42 and the valve seat 3, the valve plate assembly 42 includes a mounting rod 421 coaxially arranged at the telescopic end of the telescopic device 41, and an upper valve plate 422 and a lower valve plate 423 are spaced apart on the lower section of the mounting rod 421, and the distance between the upper valve plate 422 and the lower valve plate 423 is less than the depth of the valve seat 3.

[0025] Furthermore, the outer edges of the upper valve plate 422 and the lower valve plate 423 are both provided with flexible sealing portions 424 to facilitate sealing with the valve seat 3.

[0026] In one embodiment, a reducing structure 31 is provided at the lower port of the valve seat 3; that is, the lower port of the valve seat 3 is smaller than the upper port of the valve seat 3, and such a configuration can make the lower valve plate 423 smaller than the inner cavity diameter of the valve seat 3; as needed, when the valve seat 3 is blocked, the upper valve plate 422 can be pressed onto the upper port of the valve seat 3, and the lower valve plate 423 can be pressed onto the upper end surface of the reducing structure 31.

[0027] As required, the diameter-reducing structure 31 may be an inner ring sleeve or other structure for reducing the diameter of the lower port of the valve seat 3 .

[0028] In this embodiment, the flexible sealing portion 424 can be provided on the corresponding lower plate surface of the valve plate, that is, a flexible sealing portion 424 is provided between the upper valve plate 422 and the upper end surface of the valve seat 3, and a flexible sealing portion 424 is also provided between the lower valve plate 423 and the upper end surface of the reduced diameter structure 31;

[0029] The flexible sealing portion 424 is made of a flexible high temperature resistant material.

[0030] Embodiment 2, combined with the attached Figure 1 , a bypass structure of a dust catcher, based on the first embodiment, is to prevent the smoke in the lower air inlet channel 11 from being discharged through the valve seat 3 when the valve seat 3 is in a closed position; and also includes an air supply device 5 capable of supplying air to the space between the upper valve plate 422 and the lower valve plate 423 in the inner cavity of the valve seat 3 when the valve seat 3 is in a closed position;

[0031] The air supply device 5 includes a fan 51 . An air pipe 52 is provided at the air outlet of the fan 51 . The air outlet of the air pipe 52 penetrates the side wall of the valve seat 3 and is correspondingly communicated with the inner cavity of the valve seat 3 .

[0032] As required, the blower 51 may be a Roots blower.

[0033] In this way, when the valve seat 3 is in a closed position, air is inflated into the inner cavity of the valve seat 3 so that the inner cavity of the valve seat 3 is in a position with a certain air pressure, and the air pressure is greater than the air pressure in the lower air inlet channel 11. In this way, the air in the lower air inlet channel 11 can be prevented from entering the inner cavity of the door seat 3. Even if the flexible sealing part 424 is damaged, the inner cavity of the valve seat 3 can be prevented from entering the inner cavity of the door seat 3 because of the certain air pressure in the inner cavity of the valve seat 3.

[0034] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the present invention.

Claims

1. A bypass structure of a dust collector, characterized in that: The invention comprises a ventilation pipe (1), wherein an inclined partition (2) is provided in the inner cavity of the ventilation pipe (1), and the partition (2) divides the inner cavity of the ventilation pipe (1) into a lower air intake channel (11) and an upper air exhaust channel (12); a valve seat (3) is provided on the plate surface of the partition (2) corresponding to the upper air exhaust channel (12); the ventilation pipe (1) is also provided with a valve structure (4) for opening and closing the valve seat (3), so that when the temperature of the smoke is too high or the smoke contains a large amount of impurities, the smoke can be discharged from the valve seat (3).

2. The bypass structure of the dust collector according to claim 1, characterized in that: The valve structure (4) comprises a telescopic device (41) arranged above the valve seat (3), the telescopic end of the telescopic device (41) faces the valve seat (3), and a valve plate assembly (42) is provided at the telescopic end of the telescopic device (41).

3. The bypass structure of the dust collector according to claim 2, characterized in that: The valve plate assembly (42) comprises a mounting rod (421) coaxially arranged at the telescopic end of the telescopic device (41), an upper valve plate (422) and a lower valve plate (423) being sleeved on the lower section of the mounting rod (421), and a distance between the upper valve plate (422) and the lower valve plate (423) is less than the depth of the valve seat (3).

4. The bypass structure of the dust collector according to claim 3, characterized in that: The outer edges of the upper valve plate (422) and the lower valve plate (423) are both provided with flexible sealing portions (424) to facilitate sealing cooperation with the valve seat (3).

5. The bypass structure of the dust collector according to claim 3, characterized in that: It also includes an air supply device (5) capable of supplying air to the inner cavity of the valve seat (3) corresponding to the space between the upper valve plate (422) and the lower valve plate (423) when the valve seat (3) is in a closed position, so as to prevent smoke in the lower air inlet channel (11) from being discharged through the valve seat (3).

6. The bypass structure of the dust collector according to claim 5, characterized in that: The air supply device (5) comprises a fan (51), an air outlet end of the fan (51) being provided with an air pipe (52), the air outlet end of the air pipe (52) penetrating the side wall of the valve seat (3) and correspondingly communicating with the inner cavity of the valve seat (3).

7. The bypass structure of the dust collector according to claim 1, characterized in that: The lower port of the valve seat (3) is provided with a diameter reduction structure (31).

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