Circulating type waste gas dust removal device of lime rotary kiln

Abstract

The utility model belongs to the field of dust removal devices, and particularly relates to a lime rotary kiln circulating type waste gas dust removal device which comprises a dust removal bin, a Roots blower is fixedly installed on the upper portion of the right side of the dust removal bin, the input end of the Roots blower is connected into the dust removal bin, and the output end of the Roots blower is fixedly connected with a backflow pipe. A three-way valve is arranged on the lower section of a pipe body of the backflow pipe, an exhaust branch pipe is arranged on the right side of the three-way valve, and a taper pipe is fixedly connected to the bottom of the inner side of the dust removal bin. The dust removal bin is arranged, the gas inlet pipe is arranged at the bottom of the dust removal bin, the Roots blower is arranged on the right side of the dust removal bin, the return pipe and the exhaust branch pipe are arranged at the output end of the Roots blower, and the one-way valve type dust filtering plate is arranged in the dust removal bin, so that waste gas can be subjected to dust removal and filtration; therefore, after the gas inlet pipe and the return pipe are connected to the rotary kiln, waste heat recovery and dust removal treatment can be carried out on waste gas in the rotary kiln.

Description

Technical Field

[0001] The utility model relates to the field of dust removal devices, in particular to a circulating exhaust gas dust removal device for a lime rotary kiln. Background Art

[0002] The lime rotary kiln exhaust gas dust removal device is a device for treating particulate matter and pollutants in the lime rotary kiln exhaust gas. For example, the utility model patent with the authorization announcement number CN220573099U proposes a rotary kiln dust and exhaust gas treatment system, which includes a rotary kiln and a dust collector, a feed pipe is arranged on the top of the rotary kiln, a smoke chamber is connected at the kiln tail of the rotary kiln, and a desulfurization unit connected to the dust collector is also included. The desulfurization unit includes a desulfurization tower and an alkaline water system, and a circulating pipeline system is arranged between the desulfurization tower and the alkaline water system. The circulating pipeline system includes an alkaline water circulation pipeline, an industrial water circulation pipeline, and a wastewater circulation pipeline. A kiln ash transmission device is arranged between the dust collector and the feed pipe.

[0003] The existing lime rotary kiln waste gas dust removal device directly discharges the waste gas after dust removal or connects it to the unified waste gas channel of the factory building, but the waste heat in the waste gas is not well utilized, and the dust filter component is easily blocked by dust accumulation, thus affecting normal exhaust. Therefore, it needs to be improved. Utility Model Content

[0004] The utility model aims to provide a circulating exhaust gas dust removal device for a lime rotary kiln, which solves the problem that the existing exhaust gas dust removal device for a lime rotary kiln directly discharges or connects the exhaust gas to a unified exhaust gas passage of a factory building after dust removal, but the waste heat in the exhaust gas is not well utilized, and at the same time solves the problem that the dust filter component is easily clogged by dust accumulation, thereby affecting normal exhaust.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lime rotary kiln circulating exhaust gas dust removal device, comprising a dust removal bin, a Roots blower is fixedly installed on the upper right side of the dust removal bin, the input end of the Roots blower is connected to the dust removal bin, the output end of the Roots blower is fixedly connected to a return pipe, a three-way valve is provided at the lower section of the tube body of the return pipe, an exhaust branch pipe is provided on the right side of the three-way valve, a conical tube is fixedly connected to the inner bottom of the dust removal bin, a plug is slidably connected to the inner side of the upper end opening of the conical tube, a dust filter plate is fixedly connected to the top of the plug, and the dust filter plate is slidably connected to the inner side of the dust removal bin, an air inlet pipe is fixedly connected to the middle part of the lower end of the dust removal bin, and a slag discharge port is provided at the lower end edge of the dust removal bin.

[0006] Preferably, a plurality of fixing rods are fixedly connected to the inner side of the cone tube, and a support block is fixedly connected between the plurality of fixing rods, a sleeve is fixedly connected to the upper end of the support block, a sliding rod is slidably connected to the inner side of the sleeve, the top of the sliding rod is fixedly connected to the plug, and a spring 1 is arranged on the inner side of the sleeve. The spring 1 applies elastic force to the sliding rod, which has the function of assisting the resetting of the plug.

[0007] Preferably, one end of the spring 1 is fixedly connected to the slide bar, and the other end of the spring 1 is fixedly connected to the inner surface of the sleeve. By setting the spring 1, the elastic force can be applied to the slide bar.

[0008] Preferably, the bottom of the dust removal bin is in contact with a retaining ring, and the retaining ring is slidably connected to the outside of the air inlet pipe, the side of the retaining ring is fixedly connected to a flange, the lower outer part of the dust removal bin is hinged with a buckle, the buckle is clamped with the flange, the lower outer part of the dust removal bin is fixedly connected with a sliding sleeve, the interior of the sliding sleeve is slidably connected with a sliding pin, the sliding pin contacts the buckle, and a second spring is arranged on the inner side of the sliding sleeve. The retaining ring is locked by the cooperation of the buckle and the flange.

[0009] Preferably, one end of the second spring is fixedly connected to the sliding pin, and the other end of the second spring is fixedly connected to the inner surface of the sliding sleeve. By setting the second spring, the elastic force can be applied to the sliding pin.

[0010] Preferably, a motor is fixedly mounted on the top of the dust removal bin, the output shaft of the motor passes through the dust removal bin and is connected to the dust removal bin via a bearing, the end of the output shaft is fixedly connected to a prismatic shaft, a sleeve is slidably sleeved on the outer side of the shaft body of the prismatic shaft, a brush is fixedly connected to the lower outer side of the sleeve, and the brush contacts the dust filter plate. The prismatic shaft is driven to rotate by the motor, and the prismatic shaft drives the sleeve and the brush to rotate, so that the dust filter plate can be unblocked to prevent the mesh from being blocked.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model provides a dust removal bin, an air inlet pipe is provided at the bottom of the dust removal bin, and a Roots blower is provided on the right side of the dust removal bin. A return pipe and an exhaust branch pipe are provided at the output end of the Roots blower, and a one-way valve type dust filter plate is provided in the dust removal bin to filter the exhaust gas. After the air inlet pipe and the return pipe are connected to the rotary kiln, the exhaust gas in the rotary kiln can be subjected to waste heat recovery and dust removal.

[0013] 2. The utility model sets a prismatic shaft driven by a motor on the top of the dust removal bin. The motor drives the prismatic shaft to rotate, and the prismatic shaft drives the shaft sleeve and the brush to rotate, so as to dredge the dust filter plate and prevent the mesh from being blocked, thereby ensuring smooth filtration of the exhaust gas dust removal. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 For the utility model Figure 1 A front cross-sectional view of

[0016] Figure 3 For the utility model Figure 2 A magnified view of the structure of part A;

[0017] Figure 4 For the utility model Figure 2 A magnified view of the structure of part B;

[0018] Figure 5 For the utility model Figure 2 A three-dimensional diagram of the local structure.

[0019] In the figure: 1. dust removal bin; 2. Roots blower; 3. return pipe; 4. three-way valve; 5. exhaust branch pipe; 6. cone pipe; 7. plug; 8. dust filter plate; 9. fixing rod; 10. support block; 11. sleeve; 12. slide rod; 13. spring 1; 14. slag discharge port; 15. air inlet pipe; 16. retaining ring; 17. flange; 18. sliding sleeve; 19. sliding pin; 20. spring 2; 21. buckle; 22. motor; 23. prismatic shaft; 24. bushing; 25. brush. DETAILED DESCRIPTION

[0020] 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 of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0021] See also Figure 1-2 A circulating exhaust gas dust removal device for a lime rotary kiln comprises a dust removal bin 1, a Roots blower 2 is fixedly installed on the upper right side of the dust removal bin 1, the input end of the Roots blower 2 is connected to the dust removal bin 1, a return pipe 3 is fixedly connected to the output end of the Roots blower 2, a three-way valve 4 is arranged at the lower section of the tube body of the return pipe 3, an exhaust branch pipe 5 is arranged on the right side of the three-way valve 4, a cone pipe 6 is fixedly connected to the inner bottom of the dust removal bin 1, a plug 7 is slidably connected to the inner side of the upper end opening of the cone pipe 6, a dust filter plate 8 is fixedly connected to the top of the plug 7, and the dust filter plate 8 is slidably connected to the inner side of the dust removal bin 1, an air inlet pipe 15 is fixedly connected to the middle part of the lower end of the dust removal bin 1, and a slag discharge port 14 is opened at the lower end edge of the dust removal bin 1.

[0022] See also Figure 2-3 , a plurality of fixed rods 9 are fixedly connected to the inner side of the cone tube 6, and a support block 10 is fixedly connected between the plurality of fixed rods 9, a sleeve 11 is fixedly connected to the upper end of the support block 10, a sliding rod 12 is slidably connected to the inner side of the sleeve 11, the top of the sliding rod 12 is fixedly connected to the plug 7, and a spring 13 is arranged on the inner side of the sleeve 11. One end of the spring 13 is fixedly connected to the sliding rod 12, and the other end of the spring 13 is fixedly connected to the inner surface of the sleeve 11. By setting the spring 13, the elastic force can be applied to the sliding rod 12, and the elastic force applied to the sliding rod 12 by the spring 13 has the function of assisting the resetting of the plug 7.

[0023] See also Figure 2-4 The bottom of the dust removal bin 1 is in contact with a retaining ring 16, and the retaining ring 16 is slidably connected to the outside of the air inlet pipe 15. The side of the retaining ring 16 is fixedly connected to a flange 17. The lower outer part of the dust removal bin 1 is hinged with a buckle 21, which is clamped with the flange 17. The lower outer part of the dust removal bin 1 is fixedly connected with a sliding sleeve 18. The inside of the sliding sleeve 18 is slidably connected with a sliding pin 19, which contacts the buckle 21. A spring 20 is arranged on the inner side of the sliding sleeve 18. One end of the spring 20 is fixedly connected to the sliding pin 19, and the other end of the spring 20 is fixedly connected to the inner surface of the sliding sleeve 18. By setting the spring 20, the elastic force can be applied to the sliding pin 19. By the cooperation between the buckle 21 and the flange 17, the retaining ring 16 has a locking effect.

[0024] See also Figure 1 , Figure 2 , Figure 5 A motor 22 is fixedly installed on the top of the dust removal bin 1. The output shaft of the motor 22 passes through the dust removal bin 1 and is connected to the dust removal bin 1 through a bearing. The end of the output shaft is fixedly connected to a prismatic shaft 23. A sleeve 24 is slidably sleeved on the outer side of the shaft body of the prismatic shaft 23. A brush 25 is fixedly connected to the lower outer side of the sleeve 24, and the brush 25 is in contact with the dust filter plate 8. The prismatic shaft 23 is driven to rotate by the motor 22, and the prismatic shaft 23 drives the sleeve 24 and the brush 25 to rotate, so that the dust filter plate 8 can be dredged to prevent the mesh from being blocked.

[0025] The specific implementation process of the utility model is as follows: when in use, the air inlet pipe 15 and the return pipe 3 of the device need to be connected to the rotary kiln through the pipeline, and then the Roots blower 2 is started. The Roots blower 2 empties the dust removal bin 1. At this time, the plug 7 is pushed up in a negative pressure state and drives the dust filter plate 8 to move up. Subsequently, the exhaust gas in the rotary kiln enters the dust removal bin 1 after passing through the air inlet pipe 15. Then, after the exhaust gas passes through the dust removal filtration of the dust filter plate 8, a part of it is re-discharged into the rotary kiln through the return pipe 3, and the other part is connected to the unified exhaust channel of the factory building. At the same time, the motor 22 drives the prism shaft 23 to rotate, and the prism shaft 23 drives the shaft sleeve 24 and the brush 25 to rotate, so that the dust filter plate 8 can be dredged to prevent the clogging of its mesh, thereby ensuring the smooth filtering of the exhaust gas dust removal.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circulating exhaust gas dust removal device for a lime rotary kiln, comprising a dust removal bin (1), characterized in that: A Roots blower (2) is fixedly installed on the upper right side of the dust removal bin (1); the input end of the Roots blower (2) is connected to the dust removal bin (1); the output end of the Roots blower (2) is fixedly connected to a return pipe (3); a three-way valve (4) is provided at the lower section of the return pipe (3); an exhaust branch pipe (5) is provided on the right side of the three-way valve (4); a conical pipe (6) is fixedly connected to the bottom of the inner side of the dust removal bin (1); a plug (7) is slidably connected to the inner side of the upper end opening of the conical pipe (6); a dust filter plate (8) is fixedly connected to the top of the plug (7); and the dust filter plate (8) is slidably connected to the inner side of the dust removal bin (1); an air inlet pipe (15) is fixedly connected to the middle part of the lower end of the dust removal bin (1); and a slag discharge port (14) is provided at the lower edge of the dust removal bin (1).

2. A lime rotary kiln circulating exhaust gas dust removal device according to claim 1, characterized in that: A plurality of fixing rods (9) are fixedly connected to the inner side of the conical tube (6), and a support block (10) is fixedly connected between the plurality of fixing rods (9), a sleeve (11) is fixedly connected to the upper end of the support block (10), a sliding rod (12) is slidably connected to the inner side of the sleeve (11), the top of the sliding rod (12) is fixedly connected to the plug (7), and a spring (13) is arranged on the inner side of the sleeve (11).

3. A lime rotary kiln circulating exhaust gas dust removal device according to claim 2, characterized in that: One end of the spring one (13) is fixedly connected to the slide rod (12), and the other end of the spring one (13) is fixedly connected to the inner surface of the sleeve (11).

4. A lime rotary kiln circulating exhaust gas dust removal device according to claim 1, characterized in that: The bottom of the dust removal bin (1) is in contact with a retaining ring (16), and the retaining ring (16) is slidably connected to the outer side of the air inlet pipe (15), the side of the retaining ring (16) is fixedly connected to a flange (17), the lower outer side of the dust removal bin (1) is hinged with a buckle (21), the buckle (21) is snap-fitted with the flange (17), the lower outer side of the dust removal bin (1) is fixedly connected with a sliding sleeve (18), the interior of the sliding sleeve (18) is slidably connected with a sliding pin (19), the sliding pin (19) is in contact with the buckle (21), and a spring 2 (20) is arranged on the inner side of the sliding sleeve (18).

5. A lime rotary kiln circulating exhaust gas dust removal device according to claim 4, characterized in that: One end of the second spring (20) is fixedly connected to the sliding pin (19), and the other end of the second spring (20) is fixedly connected to the inner surface of the sliding sleeve (18).

6. A lime rotary kiln circulating exhaust gas dust removal device according to claim 1, characterized in that: A motor (22) is fixedly mounted on the top of the dust removal bin (1); an output shaft of the motor (22) passes through the dust removal bin (1) and is connected to the dust removal bin (1) via a bearing; a prismatic shaft (23) is fixedly connected to the end of the output shaft; a shaft sleeve (24) is slidably sleeved on the outer side of the shaft body of the prismatic shaft (23); a brush (25) is fixedly connected to the lower outer side of the shaft sleeve (24), and the brush (25) is in contact with the dust filter plate (8).

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