External dust remover filter bag over-temperature bypass protection valve

Abstract

The utility model discloses an external dust remover filter bag prevents over temperature bypass protection valve relates to cloth bag dust remover technical field, concretely is an external dust remover filter bag prevents over temperature bypass protection valve, including valve body, the first valve seat and second valve seat of setting in the valve body inside, the valve plate of setting between the first valve seat and second valve seat, the overhauling support of installing in the valve body top and the top air cylinder of installing in the overhauling support top, is provided with first air inlet, second air inlet and air outlet on the valve body. The external dust remover filter bag prevents over temperature bypass protection valve, through with the setting of valve body setting in the outside of cloth bag dust remover, improves the overhauling efficiency, through the filter cover of valve plate bottom setting, and the filter cover is detachable setting, when using, the airflow is introduced from the second air inlet and is discharged from the air outlet, and the smoke dust particle in airflow can be filtered through the filter cover, prevents the smoke dust particle from entering the fan, improves the service life of fan.

Description

Technical Field

[0001] This utility model relates to the technical field of baghouse dust collectors, specifically to an externally mounted over-temperature protection valve for filter bags in dust collectors. Background Technology

[0002] In the field of pulse jet baghouse dust collectors, it is common to encounter situations requiring the handling of relatively high-temperature flue gas. Sometimes, the operating flue gas temperature fluctuates around the maximum temperature that the filter bags can withstand for extended periods. If the filter bags are not designed with protection, prolonged exposure to excessively high temperatures will cause them to shrink or even melt, leading to filter bag damage and significant economic losses, potentially even resulting in downtime and associated losses. The larger the filtration area of ​​the dust collector, the greater the economic loss. Currently, the bypass protection valves of existing dust collectors are mostly built into the dust collector's duct cavity, making maintenance inconvenient and complete replacement difficult. For double-row insulated dust collectors, even forced entry for repair is difficult, and the dust collector cavity is often black and dirty, thus lacking a good, simple, and effective maintenance method.

[0003] Existing dust collector bypass valves have several drawbacks: they are inconvenient for external installation, inspection, maintenance, and replacement, which are common problems; their application range is limited, the cylinder cannot be quickly and independently removed and replaced externally, and after switching, the airflow will directly enter the fan, and the dust particles in the airflow will cause wear on the fan blades and transmission parts, reducing the service life of the fan. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an external dust collector filter bag over-temperature protection valve, which facilitates maintenance and disassembly / replacement, and can filter dust in the airflow during over-temperature protection, thereby improving the service life of the fan.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an external dust collector filter bag over-temperature protection valve, comprising a valve body, a first valve seat and a second valve seat disposed inside the valve body, a valve plate disposed between the first valve seat and the second valve seat, a maintenance support mounted on the top of the valve body, and a top cylinder mounted on the top of the maintenance support. The valve body is a three-way design, with a first air inlet, a second air inlet, and an exhaust outlet on the valve body. The first air inlet and the second air inlet are symmetrically distributed with respect to the exhaust outlet, and the first air inlet, the second air inlet, and the exhaust outlet are distributed on opposite sides of the valve body. A first maintenance door is disposed in the middle of the outer side wall of the valve body. The first maintenance door and the exhaust outlet are both located between the first valve seat and the second valve seat. The output end of the top cylinder is drivenly connected to a lifting rod, the bottom of which is connected to the valve plate. The first air inlet and the second air inlet are externally connected to the bag filter, and the exhaust outlet is externally connected to a fan.

[0006] Optionally, the first valve seat and the second valve seat are disposed on the inner wall of the valve body and are symmetrically distributed about the center of the valve body. A circular valve hole is opened between the first valve seat and the second valve seat, and the edge of the valve hole is stepped.

[0007] Optionally, the valve plate is circular and matches the valve hole. A sealing gasket is provided at the edge of the valve plate, and the sealing gasket matches the edge of the valve hole.

[0008] Optionally, the valve plate is provided with reinforcing ribs, and a connecting seat is installed in the middle of the reinforcing ribs. The connecting seat is located at the center of the valve plate and is connected to the bottom of the lifting rod by bolts.

[0009] Optionally, a filter cover is bolted to the bottom of the valve plate. The filter cover is cylindrical, with a diameter that matches the diameter of the valve plate, and a height that is the distance between the first valve seat and the second valve seat.

[0010] Optionally, the first inspection door is equipped with a handle, and a rotating plate is engaged with the outer wall of the first inspection door, with the end of the rotating plate rotatably connected to the outer wall of the valve body.

[0011] Optionally, a second inspection door is provided on the outer wall of the inspection support, and a controller is provided on the outside of the top cylinder. The controller is electrically connected to the top cylinder through a wire.

[0012] This utility model provides an external dust collector filter bag over-temperature protection valve, which has the following beneficial effects:

[0013] 1. The external dust collector filter bag over-temperature protection valve, by setting the valve body on the outside of the bag dust collector, facilitates the inspection and maintenance of the over-temperature protection valve. In addition, the setting of the first and second inspection doors further facilitates the inspection and maintenance of the top cylinder end, valve plate, first valve seat and second valve seat, thus improving maintenance efficiency.

[0014] 2. The external dust collector filter bag over-temperature bypass protection valve uses a filter cover at the bottom of the valve plate, which is detachable. When in use and under over-temperature protection, the valve plate moves to the first valve seat. At this time, the airflow is introduced from the second air inlet and discharged from the exhaust outlet. The dust particles in the airflow can be filtered by the filter cover, preventing dust particles from entering the fan and improving the service life of the fan. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external three-dimensional structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 3 This is a side sectional view of the present invention.

[0018] Figure 4 This is a three-dimensional cross-sectional view of the internal structure of this utility model;

[0019] Figure 5 This utility model Figure 4 Enlarged structural diagram of section A in the middle;

[0020] In the diagram: 1. Valve body; 2. First air inlet; 3. Second air inlet; 4. Exhaust outlet; 5. First inspection door; 6. Inspection support; 7. Second inspection door; 8. Top cylinder; 9. Lifting rod; 10. First valve seat; 11. Second valve seat; 12. Valve plate; 13. Reinforcing rib; 14. Connecting seat; 15. Sealing gasket; 16. Filter cover. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1

[0023] Please see Figures 1 to 5 This utility model provides a technical solution for an external dust collector filter bag over-temperature protection valve, comprising a valve body 1, a first valve seat 10 and a second valve seat 11 disposed inside the valve body 1, a valve plate 12 disposed between the first valve seat 10 and the second valve seat 11, a maintenance support 6 mounted on the top of the valve body 1, and a top cylinder 8 mounted on the top of the maintenance support 6. The valve body 1 is a three-way design, and the valve body 1 is provided with a first air inlet 2, a second air inlet 3, and an exhaust outlet 4. The first air inlet 2 and the second air inlet 3... Regarding the symmetrical distribution of the exhaust vent 4, the first air inlet 2, the second air inlet 3, and the exhaust vent 4 are distributed on opposite sides of the valve body 1. A first inspection door 5 is provided in the middle of the outer side wall of the valve body 1. The first inspection door 5 and the exhaust vent 4 are both located between the first valve seat 10 and the second valve seat 11. The output end of the top cylinder 8 is connected to a lifting rod 9. The bottom of the lifting rod 9 is connected to the valve plate 12. A universal floating joint is provided between the lifting rod 9 and the valve plate 12. The first air inlet 2 and the second air inlet 3 are externally connected to a bag filter, and the exhaust vent 4 is externally connected to a fan.

[0024] The first valve seat 10 and the second valve seat 11 are disposed on the inner wall of the valve body 1 and are symmetrically distributed about the center of the valve body 1. A circular valve hole is opened between the first valve seat 10 and the second valve seat 11, and the edge of the valve hole is stepped.

[0025] A sealing layer is provided between the top of the maintenance support 6 and the top cylinder 8, and the top of the maintenance support 6 and the top cylinder 8 are connected by fastening bolts.

[0026] The first inspection door 5 is equipped with a handle, and a rotating plate is engaged on the outer wall of the first inspection door 5. The end of the rotating plate is rotatably connected to the outer wall of the valve body 1.

[0027] A second inspection door 7 is provided on the outer wall of the inspection support 6, and a controller is provided on the outside of the top cylinder 8. The controller is electrically connected to the top cylinder 8 through a wire.

[0028] The use of a universal floating joint makes the contact sealing of the valve plate 12 more perfect. A guide tube with a sealing pressure plate is set between the lifting rod 9 and the top cylinder 8, which makes the sealing of the lifting rod 9 better. The sealing material of the sealing pressure plate is asbestos rope, which is very convenient to replace.

[0029] Specifically, when using this over-temperature bypass protection valve, it needs to be installed on the outside of the bag filter, with the first air inlet 2 inside the filter bag and the second air inlet 3 outside the filter bag. The exhaust outlet 4 is connected to an external fan. During normal operation, the bag filter introduces high-temperature flue gas, which is filtered by the internal filter bags. The filtered gas is then introduced into the valve body 1 through the first air inlet 2. At this time, the valve plate 12 is on the second valve seat 11, so the airflow is drawn away by the fan through the exhaust outlet 4. Generally, a temperature sensor is installed on the air inlet of the bag filter. When the temperature of the high-temperature flue gas exceeds the set value, the controller will automatically control the flow. When the top cylinder 8 is activated, it drives the lifting rod 9 to raise the valve plate 12 from the second valve seat 11 to the first valve seat 10, closing the connection between the first air inlet 2 and the exhaust port 4, and opening the connection between the second air inlet 3 and the exhaust port 4. High-temperature dust will no longer pass through the dust collector bag, but will be directly introduced into the exhaust port 4 from the second air inlet 3 and discharged, preventing the high-temperature flue gas from damaging the dust collector bag. Furthermore, since the valve body 1 is located outside the bag dust collector and is equipped with the first inspection door 5, it is convenient to perform regular maintenance on the first valve seat 10, the second valve seat 11, and the valve plate 12. The second inspection door 7 is convenient to perform maintenance on the top cylinder 8, greatly improving the convenience of use and maintenance.

[0030] Example 2

[0031] Please see Figure 1 , Figure 2 and Figure 5The present invention provides a technical solution in which the valve plate 12 is circular and adapted to the valve hole. A sealing gasket 15 is provided at the edge of the valve plate 12 and is adapted to the edge of the valve hole. A reinforcing rib 13 is provided on the valve plate 12, and a connecting seat 14 is installed in the middle of the reinforcing rib 13. The connecting seat 14 is located at the center of the valve plate 12. The connecting seat 14 is connected to the bottom of the lifting rod 9 by bolts. A filter cover 16 is installed at the bottom of the valve plate 12 by bolts. The filter cover 16 is cylindrical and its diameter is the same as that of the valve plate 12. The height of the filter cover 16 is the distance between the first valve seat 10 and the second valve seat 11. The filter cover 16 is made of high-temperature resistant metal fiber.

[0032] Specifically, when over-temperature protection is activated, a filter cover 16 is installed at the bottom of the valve plate 12. When the valve plate 12 rises from the second valve seat 11 to the first valve seat 10, it automatically drives the filter cover 16 to rise, so that the high-temperature flue gas is filtered by the filter cover 16 when passing through the second valve seat 11, preventing particulate impurities in the flue gas from damaging the fan and improving the service life of the fan.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An external dust collector filter bag over-temperature protection valve, comprising a valve body (1), a first valve seat (10) and a second valve seat (11) disposed inside the valve body (1), a valve plate (12) disposed between the first valve seat (10) and the second valve seat (11), a maintenance support (6) mounted on the top of the valve body (1), and a top cylinder (8) mounted on the top of the maintenance support (6), characterized in that: The valve body (1) is a three-way design. The valve body (1) is provided with a first air inlet (2), a second air inlet (3) and an exhaust outlet (4). The first air inlet (2) and the second air inlet (3) are symmetrically distributed about the exhaust outlet (4). The first air inlet (2), the second air inlet (3) and the exhaust outlet (4) are distributed on opposite sides of the valve body (1). The first inspection door (5) is provided in the middle of the outer side wall of the valve body (1). The first inspection door (5) and the exhaust outlet (4) are both located between the first valve seat (10) and the second valve seat (11). The output end of the top cylinder (8) is connected to a lifting rod (9). The bottom of the lifting rod (9) is connected to the valve plate (12). A universal floating joint is provided between the lifting rod (9) and the valve plate (12). The first air inlet (2) and the second air inlet (3) are connected to a bag filter. The exhaust outlet (4) is connected to a fan.

2. The external dust collector filter bag over-temperature protection valve according to claim 1, characterized in that: The first valve seat (10) and the second valve seat (11) are disposed on the inner wall of the valve body (1) and are symmetrically distributed about the center of the valve body (1). A circular valve hole is provided between the first valve seat (10) and the second valve seat (11), and the edge of the valve hole is stepped.

3. The external dust collector filter bag over-temperature protection valve according to claim 2, characterized in that: The valve plate (12) is circular and is adapted to the valve hole. A sealing gasket (15) is provided at the edge of the valve plate (12) and is adapted to the edge of the valve hole.

4. The external dust collector filter bag over-temperature protection valve according to claim 3, characterized in that: A reinforcing rib (13) is provided on the valve plate (12), and a connecting seat (14) is installed in the middle of the reinforcing rib (13). The connecting seat (14) is located at the center of the valve plate (12), and the connecting seat (14) is connected to the bottom of the lifting rod (9) by bolts.

5. The external dust collector filter bag over-temperature protection valve according to claim 4, characterized in that: A filter cover (16) is bolted to the bottom of the valve plate (12). The filter cover (16) is cylindrical and its diameter is the same as that of the valve plate (12). The height of the filter cover (16) is the distance between the first valve seat (10) and the second valve seat (11).

6. The external dust collector filter bag over-temperature protection valve according to claim 1, characterized in that: The first inspection door (5) is equipped with a handle, and a rotating plate is attached to the outer wall of the first inspection door (5). The end of the rotating plate is rotatably connected to the outer wall of the valve body (1).

7. The external dust collector filter bag over-temperature protection valve according to claim 1, characterized in that: A second inspection door (7) is provided on the outer wall of the inspection support (6), and a controller is provided on the outside of the top cylinder (8). The controller is electrically connected to the top cylinder (8) through a wire.

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