Flow guide device on air inlet side of bag-type dust collector

Abstract

The utility model discloses an air inlet side flow guide device of a bag-type dust collector, and belongs to the technical field of bag-type dust collectors. Comprising a bag-type dust collector body, a dust hopper installed at the bottom end of the bag-type dust collector body, a dust-containing gas inlet communicated with the dust hopper and a purified gas outlet formed in the top end of the bag-type dust collector body, and a flow guide mechanism is installed at the dust-containing gas inlet. The steel ball is jacked open under the action of pressure, meanwhile, the spring is used for absorbing instantaneous impact force generated by air pressure, smoke enters the inner side of the connecting pipe through the air port and then flows along the guide plates through the continuous S-shaped flow channels formed among the guide plates, the smoke is divided, and the flow speed is reduced before the smoke enters the ash bucket. And the washing to the wall plate of the ash bucket can be almost neglected, so that the service life of equipment is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bag dust collectors, and more specifically to an air inlet side flow guide device for bag dust collectors. Background Art

[0002] The bag filter is a dry dust filter. It is suitable for capturing fine, dry, non-fibrous dust. The filter bag is made of textile filter cloth or non-textile felt, and uses the filtering effect of fiber fabric to filter the dust-containing gas. When the dust-containing gas enters the bag filter, the large particles and heavy dust settle down due to gravity and fall into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, so that the gas is purified.

[0003] The existing patented bag dust collector, patent authorization number CN219209316U, realizes the cleaning effect of dust attached to the inner wall of the bag dust collector body, achieves the cleaning effect of the inner wall of the bag dust collector body, effectively solves the problem of manual cleaning, and adopts mechanical cleaning method instead of manual cleaning method, which reduces the workload of the staff and reduces the amount of dust inhaled by the staff. At the same time, it also reduces the damage caused by dust to the bag dust collector body and extends the service life of the bag dust collector body.

[0004] The existing bag filter is not designed with a guide plate on the air inlet side. When the equipment is in operation, after the various flue gases to be treated (including coal powder particles) enter the equipment, the flue gas flows from the pipeline to the middle box, and the flue gas speed becomes faster (the gas pressure decreases). For example, in patent authorization number CN219209316U, the flue gas directly enters the ash hopper through the air inlet side, scouring the ash hopper wall. The ash hopper wall on the air inlet side is easily worn and even damaged. In previous projects, after damage occurred, the staff often repaired the damaged position again. However, because the repair did not solve the problem from the source, the ash hopper wall would still be damaged later. Therefore, we proposed a guide device on the air inlet side of the bag filter to solve the above-mentioned problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the purpose of the utility model is to provide a guide device on the air inlet side of a bag filter, which can push open the steel ball under the action of pressure when conveying smoke, and use the spring to absorb the instantaneous impact force generated by the air pressure. The smoke enters the inner side of the connecting pipe through the air port, and then passes through the continuous S-shaped flow channel formed between multiple guide plates. The smoke flows along the guide plate, the gas is diverted, and the flow velocity is reduced before the smoke enters the ash hopper. The scouring of the ash hopper wall is almost negligible, which greatly extends the service life of the equipment.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] The air inlet side guide device of the bag dust collector comprises a bag dust collector body, an ash hopper installed at the bottom of the bag dust collector body, a dust-containing gas inlet connected to the ash hopper and a clean gas outlet opened at the top of the bag dust collector body, and a guide mechanism is installed at the dust-containing gas inlet;

[0010] The guide mechanism includes a connecting pipe that is conductively connected to the clean gas outlet, a first baffle fixedly connected to the inner side of the connecting pipe and away from the clean gas outlet, a second baffle fixedly arranged on one side of the first baffle, an air port opened in the middle of the first baffle and the second baffle and arranged in a circular structure, a steel ball installed between the first baffle and the second baffle and abutting against the air port arranged at the first baffle, a spring connected to the second baffle at one end and connected to the steel ball at the other end, and a guide plate fixedly connected to the inner side of the connecting pipe and close to the clean gas outlet.

[0011] Furthermore, guide blocks are symmetrically welded to the outer wall of the steel ball, and the guide blocks are located in the middle of the steel ball.

[0012] Furthermore, the inner wall of the connecting pipe is provided with a guide groove which is slidably connected to the end of the guide block.

[0013] Furthermore, both ends of the connecting pipe are fixedly connected with flange joints, and the flange joints are connected to the dust-containing gas inlet through bolts.

[0014] Furthermore, the outer diameter of the steel ball is greater than the inner diameter of the air port.

[0015] Furthermore, a plurality of guide plates are arranged at equal intervals, and two adjacent guide plates are arranged alternately up and down.

[0016] Furthermore, flow channels are provided between the guide plates, and the flow channels are configured in a continuous S shape.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) In this solution, when the flue gas is transported, the steel ball is pushed open by the pressure, and the spring is used to absorb the instantaneous impact force generated by the air pressure. The flue gas enters the inner side of the connecting pipe through the air port, and then passes through the continuous S-shaped flow channel formed between multiple guide plates. The flue gas flows along the guide plates, and the gas is diverted. Before the flue gas enters the ash hopper, the flow rate is reduced, and the scouring of the ash hopper wall is almost negligible, which greatly extends the service life of the equipment.

[0020] (2) In this solution, the guide block slides in cooperation with the guide groove, so that the guide block slides in cooperation with the guide groove under the elastic force of the spring, which is beneficial to the resetting of the steel ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 This is a front view schematic diagram of the connecting pipe of the utility model;

[0023] Figure 3 It is a schematic cross-sectional view of the AA portion of the connecting pipe of the utility model;

[0024] Figure 4 This is a schematic diagram of the guide groove structure of the utility model.

[0025] Description of the numbers in the figure:

[0026] 1. Bag filter body; 2. Ash hopper; 3. Dust-containing gas inlet; 4. Clean gas outlet; 5. Connecting pipe; 6. Flange joint; 7. First baffle; 8. Second baffle; 9. Gas port; 10. Steel ball; 11. Spring; 12. Guide plate; 13. Guide block; 14. Guide groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0028] Example:

[0029] See also Figure 1-4 The air inlet side guide device of the bag dust collector comprises a bag dust collector body 1, an ash hopper 2 installed at the bottom of the bag dust collector body 1, a dust-containing gas inlet 3 connected to the ash hopper 2, and a clean gas outlet 4 opened at the top of the bag dust collector body 1, and a guide mechanism is installed at the dust-containing gas inlet 3;

[0030] The flow guiding mechanism includes a connecting pipe 5 connected to the clean gas outlet 4, a first baffle 7 fixedly connected to the inner side of the connecting pipe 5 and away from the clean gas outlet 4, a second baffle 8 fixedly arranged on one side of the first baffle 7, an air port 9 opened in the middle of the first baffle 7 and the second baffle 8 and arranged in a circular structure, a steel ball 10 installed between the first baffle 7 and the second baffle 8 and abutting against the air port 9 arranged at the first baffle 7, a spring 11 connected to the second baffle 8 at one end and connected to the steel ball 10 at the other end, and a flow guiding plate 12 fixedly connected to the inner side of the connecting pipe 5 and close to the clean gas outlet 4;

[0031] It should be noted that when the air inlet side guide device of the bag filter is in use, the connecting pipe 5 is installed at the position of the dust-containing gas inlet 3, and the other end of the connecting pipe 5 is connected to the pipeline for conveying the flue gas. When the flue gas is conveyed, the steel ball 10 is pushed open under the action of pressure, and the spring 11 is used to absorb the instantaneous impact force generated by the air pressure. The flue gas enters the inner side of the connecting pipe 5 through the air port 9, and then passes through the continuous S-shaped flow channel formed between multiple guide plates 12. The flue gas flows along the guide plate 12, and the gas is diverted. Before the flue gas enters the ash hopper 2, the flow velocity is reduced, and the scouring of the wall of the ash hopper 2 can be almost ignored, which greatly extends the service life of the equipment.

[0032] like Figure 3 , Figure 4 As shown, the outer wall of the steel ball 10 is symmetrically welded with a guide block 13, and the guide block 13 is located in the middle of the steel ball 10, and the inner wall of the connecting pipe 5 is provided with a guide groove 14 that is slidably connected to the end of the guide block 13;

[0033] It should be noted that, the guide block 13 slides in cooperation with the guide groove 14 , and thus the guide block 13 slides in cooperation with the guide groove 14 under the elastic force of the spring 11 , which is beneficial to the resetting of the steel ball 10 .

[0034] like Figure 1 As shown, both ends of the connecting pipe 5 are fixedly connected with flange joints 6, and the flange joints 6 are connected to the dust-containing gas inlet 3 through bolts;

[0035] It should be noted that the flange joint 6 is provided to facilitate the connection between the connecting pipe 5 and the dust-containing gas inlet 3 .

[0036] like Figure 3 As shown, the outer diameter of the steel ball 10 is larger than the inner diameter of the air port 9;

[0037] It should be noted that when the smoke is conveyed, the steel ball 10 is pushed open by the pressure, and the spring 11 is used to absorb the instantaneous impact force generated by the air pressure.

[0038] like Figure 3As shown, a plurality of guide plates 12 are arranged at equal intervals, and two adjacent guide plates 12 are arranged alternately up and down, and flow channels are arranged between the guide plates 12, and the configuration of the flow channels is a continuous S shape;

[0039] It should be noted that, through the continuous S-shaped flow passage formed between the plurality of guide plates 12 , the flue gas flows along the guide plates 12 , the gas is diverted, and the flow velocity of the flue gas is reduced before entering the ash hopper 2 .

[0040] When in use: the connecting pipe 5 is installed at the position of the dust-containing gas inlet 3, and the other end of the connecting pipe 5 is connected to the pipeline for conveying the flue gas. When conveying the flue gas, the steel ball 10 is pushed open under the action of pressure, and the spring 11 is used to absorb the instantaneous impact force generated by the air pressure. The flue gas enters the inner side of the connecting pipe 5 through the air port 9, and then passes through the continuous S-shaped flow channel formed between multiple guide plates 12. The flue gas flows along the guide plate 12, the gas is diverted, and the flow rate is reduced before the flue gas enters the ash hopper 2.

[0041] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A bag filter air inlet side flow guide device, comprising a bag filter body (1), an ash hopper (2) installed at the bottom end of the bag filter body (1), a dust-containing gas inlet (3) connected to the ash hopper (2), and a clean gas outlet (4) provided at the top end of the bag filter body (1), characterized in that: A flow guide mechanism is installed at the dust-laden gas inlet (3); The flow guiding mechanism comprises a connecting pipe (5) which is in communication with the clean gas outlet (4), a first baffle (7) which is fixedly connected to the inner side of the connecting pipe (5) and away from the clean gas outlet (4), a second baffle (8) which is fixedly arranged on one side of the first baffle (7), an air port (9) which is provided in the middle of the first baffle (7) and the second baffle (8) and is arranged in a circular structure, a steel ball (10) which is installed between the first baffle (7) and the second baffle (8) and abuts against the air port (9) arranged on the first baffle (7), a spring (11) which is connected to the second baffle (8) at one end and connected to the steel ball (10) at the other end, and a flow guiding plate (12) which is fixedly connected to the inner side of the connecting pipe (5) and close to the clean gas outlet (4).

2. The air inlet side guide device of the bag filter according to claim 1 is characterized in that: A guide block (13) is symmetrically welded to the outer wall of the steel ball (10), and the guide block (13) is located in the middle of the steel ball (10).

3. The air inlet side guide device of the bag filter according to claim 2 is characterized in that: The inner wall of the connecting pipe (5) is provided with a guide groove (14) which is slidably connected to the end of the guide block (13).

4. The air inlet side guide device of the bag filter according to claim 1 is characterized in that: Both ends of the connecting pipe (5) are fixedly connected with flange joints (6), and the flange joints (6) are connected to the dust-containing gas inlet (3) via bolts.

5. The air inlet side guide device of the bag filter according to claim 1 is characterized in that: The outer diameter of the steel ball (10) is greater than the inner diameter of the air port (9).

6. The air inlet side guide device of the bag filter according to claim 1 is characterized in that: A plurality of guide plates (12) are arranged at equal intervals, and two adjacent guide plates (12) are arranged in an up-and-down staggered manner.

7. The air inlet side guide device of the bag filter according to claim 1 is characterized in that: Flow channels are provided between the guide plates (12), and the configuration of the flow channels is a continuous S-shape.

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