Dust treatment device for phosphogypsum processing

Abstract

The dust treatment device comprises a spray tower, a filter box, an intercepting net and a spray pipe, one side of the spray tower is connected with the filter box through a communication port, the top end of one side of the filter box is provided with an air inlet channel, the intercepting net is arranged in the center of the interior of the filter box, and the spray pipe is connected with the filter box through a communication port. A lead screw is arranged at the position, on one side of the intercepting net, in the filtering box, the lead screw is sleeved with a driving block, a cleaning brush is arranged on one side of the driving block, a driving motor is fixed to the top of the filtering box, the output end of the driving motor is connected with the lead screw, and a spraying pipe is arranged at the top end of the interior of the spraying tower. And spray heads are uniformly distributed at the bottom of the spray pipe. By installing the filter box, the spray tower, the air inlet channel, the interception net, the lead screw, the driving motor, the driving block, the cleaning brush and the dust discharging pipe, the dust treatment device can automatically clean the interception net, and the replacement frequency is reduced, so that the dust treatment efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dust treatment devices, in particular to a dust treatment device used in phosphogypsum processing. Background Art

[0002] Phosphogypsum is a solid waste produced in the wet phosphoric acid process. Its main component is calcium sulfate dihydrate. Phosphogypsum can be used as a cement retarder to improve cement performance. It can also be used to produce fertilizers such as ammonium sulfate and potassium sulfate. Due to the physical properties of phosphogypsum, such as fine particles and high viscosity, it is easy to form dust during processing. Therefore, the dust treatment system is an important link in the processing of phosphogypsum.

[0003] The dust generated during the processing of phosphogypsum enters the filter box through the air inlet channel, and the large particles of impurities are filtered out by the interception net. Then it enters the spray tower and comes into contact with the dust-laden airflow through water mist, so that the dust particles are moistened by water and condensed into larger particles, which are then captured. Under normal circumstances, the filter net in the interception room does not have the function of automatic cleaning, and will become clogged over time, affecting the filtering effect. Utility Model Content

[0004] The purpose of the utility model is to provide a dust treatment device for phosphogypsum processing to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a dust treatment device for phosphogypsum processing, comprising a spray tower, a filter box, an intercepting net and a spray pipe, one side of the spray tower is connected to the filter box through a connecting port, and an air inlet channel is provided at the top of one side of the filter box, an intercepting net is provided at a central position inside the filter box, and a screw rod is provided in the filter box on one side of the intercepting net, a driving block is sleeved on the screw rod, and a cleaning brush is provided on one side of the driving block, a driving motor is fixed on the top of the filter box, and the output end of the driving motor is connected to the screw rod, a spray pipe is provided at the top of the inside of the spray tower, and nozzles are evenly distributed on the bottom of the spray pipe, a fan is provided on the side of the spray tower away from the filter box, and the air inlet end of the fan is connected to the spray tower through an air guide pipe, and the air outlet end of the fan is connected to a chimney.

[0006] Preferably, a water collecting tank is provided at the bottom end of the spray tower, and a filter is provided at the top end of the water collecting tank.

[0007] Preferably, a water pump is provided at the bottom end of one side of the spray tower, and both ends of the water pump are connected to the water collecting tank and the spray pipe respectively.

[0008] Preferably, an ash discharge pipe is provided at one end of the bottom of the filter box, and the interior of the filter box is connected to the ash discharge pipe via a slope.

[0009] Preferably, baffles are rotatably connected to both sides of the air intake channel via a rotating shaft, and one side of the baffles is connected to the inner side wall of the air intake channel via a return spring.

[0010] Preferably, three groups of atomizing nozzles are provided at the bottom of the nozzles, and the water outlets of the atomizing nozzles are provided with uniformly distributed covers.

[0011] Preferably, the top end of the nozzle is provided with a main channel, and the bottom end of the main channel is evenly connected to the atomizing nozzle through the secondary channel.

[0012] Preferably, a guide rod is provided in the filter box on one side of the screw rod, and one side of the driving block is slidably connected to the guide rod through a guide sleeve.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the dust treatment device for phosphogypsum processing is equipped with a filter box, a spray tower, an air intake channel, an interception net, a screw rod, a drive motor, a drive block, a cleaning brush and an ash discharge pipe, and is connected to the phosphogypsum processing dust exhaust pipe through the air intake channel. The fan generates suction when it runs, and the dust impurities are sucked into the filter box. After the large particles of impurities are intercepted by the interception net, the dust-laden gas enters the spray tower for wet dust reduction. By regularly turning on the drive motor, the screw rod can be driven to rotate, and the drive block can be moved up and down along the screw rod, thereby scraping off the large particles of impurities on the interception net. The scraped impurities are discharged to the outside through the ash discharge pipe, and the interception net can be automatically cleaned, reducing the replacement frequency, thereby improving the dust treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the filter box of the present utility model;

[0017] Figure 3 For the utility model Figure 2 A in the middle is an enlarged structural diagram;

[0018] Figure 4This is a schematic diagram of the cross-sectional structure of the air intake channel of the present utility model;

[0019] Figure 5 This is a schematic diagram of the cross-sectional structure of the nozzle of the present utility model.

[0020] In the figure: 1. Spray tower; 2. Filter box; 3. Air inlet channel; 4. Intercepting net; 5. Spray pipe; 6. Nozzle; 7. Ash discharge pipe; 8. Chimney; 9. Air duct; 10. Filter; 11. Water pump; 12. Water collection tank; 13. Fan; 14. Drive motor; 15. Guide rod; 16. Screw rod; 17. Drive block; 18. Cleaning brush; 19. Return spring; 20. Baffle; 21. Uniform distribution cover; 22. Main channel; 23. Secondary channel; 24. Atomizing nozzle. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-5 The utility model provides an embodiment: a dust treatment device for phosphogypsum processing, comprising a spray tower 1, a filter box 2, an interception net 4 and a spray pipe 5. One side of the spray tower 1 is connected to the filter box 2 through a connecting port. A fan 13 is provided on the side of the spray tower 1 away from the filter box 2, and an air intake channel 3 is provided at the top of one side of the filter box 2. The air intake channel 3 is connected to the phosphogypsum processing dust exhaust pipe, and dust impurities first enter the filter box 2.

[0023] Baffles 20 are rotatably connected to both sides of the air inlet channel 3 via a rotating shaft, and one side of the baffle 20 is connected to the inner wall of the air inlet channel 3 via a return spring 19. When dust-laden gas enters, it squeezes the baffle 20 and enters through the gap in the baffle 20, which helps to slow down the flow rate.

[0024] An interception net 4 is provided at the center of the filter box 2. The fan 13 generates suction when in operation, sucking dust impurities into the filter box 2. After the large particles of impurities are intercepted by the interception net 4, the dust-laden gas enters the spray tower 1.

[0025] A spray pipe 5 is provided at the top of the spray tower 1, and nozzles 6 are evenly distributed at the bottom of the spray pipe 5;

[0026] The water mist is sprayed out through the atomizing nozzle 24 at the bottom of the nozzle 6, and contacts the dust-laden airflow, so that the dust particles are moistened by the water and condensed into larger particles, which are then captured;

[0027] The bottom of the nozzle 6 is provided with three groups of atomizing nozzles 24, and the top of the nozzle 6 is provided with a main channel 22, and the bottom end of the main channel 22 is evenly connected to the atomizing nozzle 24 through the secondary channel 23, which is conducive to expanding the spraying range of the water mist, increasing the contact area with the dust-laden gas, and improving the dust reduction effect;

[0028] The water outlets of the atomizing nozzles 24 are all provided with uniform distribution covers 21, so that the sprayed water mist is more fine and uniform;

[0029] A water collecting tank 12 is provided at the bottom of the spray tower 1, and a filter screen 10 is provided at the top of the water collecting tank 12;

[0030] A water pump 11 is provided at the bottom end of one side of the spray tower 1, and both ends of the water pump 11 are connected to the water collecting tank 12 and the spray pipe 5 respectively;

[0031] Dust particles and water enter the water collection tank 12 under the action of gravity, are filtered by the filter 10, and are sucked into the spray pipe 5 through the water pump 11 for water recycling;

[0032] The air inlet end of the fan 13 is connected to the spray tower 1 through the air duct 9, and the air outlet end of the fan 13 is connected to the chimney 8. The purified gas enters the chimney 8 through the air duct 9 and is discharged to the outside.

[0033] A screw rod 16 is provided in the filter box 2 on one side of the interception net 4. A drive block 17 is sleeved on the screw rod 16, and a cleaning brush 18 is provided on one side of the drive block 17. A drive motor 14 is fixed to the top of the filter box 2, and the output end of the drive motor 14 is connected to the screw rod 16;

[0034] By regularly turning on the drive motor 14, the screw rod 16 can be driven to rotate, so that the drive block 17 moves up and down along the screw rod 16, thereby scraping off the large particles of impurities on the interception net 4;

[0035] An ash discharge pipe 7 is provided at one end of the bottom of the filter box 2, and the interior of the filter box 2 is connected to the ash discharge pipe 7 via a slope. The scraped impurities are discharged to the outside through the ash discharge pipe 7, which can automatically clean the interception net 4, reduce the replacement frequency, and thus improve the dust treatment efficiency;

[0036] A guide rod 15 is provided in the filter box 2 on one side of the screw rod 16. One side of the drive block 17 is slidably connected to the guide rod 15 through a guide sleeve to guide and limit the drive block 17.

[0037] The specific models and specifications of the water pump 11, the fan 13 and the drive motor 14 need to be determined by selection calculation based on the specification parameters of the device. The selection calculation method is existing technology and will not be described in detail.

[0038] Working principle: When the embodiment of the present application is in use, the dust exhaust pipe of the phosphogypsum processing is connected through the air inlet channel 3, and the fan 13 is running to generate suction, which sucks the dust impurities into the filter box 2. After the large particles of impurities are intercepted by the interception net 4, the dust-laden gas enters the spray tower 1, and water mist is sprayed through the atomizing nozzle 24 at the bottom of the nozzle 6. It comes into contact with the dust-laden airflow, so that the dust particles are moistened by water and condensed into larger particles, which are then captured. There are 3 groups of atomizing nozzles 24, which are conducive to expanding the spraying range of the water mist, increasing the contact area with the dust-laden gas, and improving the dust reduction effect. Dust particles and water enter the water collection tank 12 under the action of gravity, and are filtered by the filter screen 10 and then sucked into the spray pipe 5 through the water pump 11 for water resource recycling. The purified gas enters the chimney 8 through the air duct 9 and is discharged to the outside. At the same time, by regularly starting the drive motor 14, the screw rod 16 can be driven to rotate, so that the drive block 17 moves up and down along the screw rod 16, thereby scraping off the large particles of impurities on the interception net 4. The scraped impurities are discharged to the outside through the ash unloading pipe 7, which can automatically clean the interception net 4, reduce the replacement frequency, and thus improve the dust treatment efficiency.

[0039] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0041] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A dust treatment device for phosphogypsum processing, characterized in that: The invention comprises a spray tower (1), a filter box (2), an interception net (4) and a spray pipe (5), wherein one side of the spray tower (1) is connected to the filter box (2) through a connecting port, and an air inlet channel (3) is provided at the top of one side of the filter box (2), an interception net (4) is provided at a central position inside the filter box (2), and a screw rod (16) is provided in the filter box (2) on one side of the interception net (4), a driving block (17) is sleeved on the screw rod (16), and a cleaning brush (17) is provided on one side of the driving block (17). 8), a driving motor (14) is fixed to the top of the filter box (2), and the output end of the driving motor (14) is connected to the screw (16), a spray pipe (5) is provided at the top of the inside of the spray tower (1), and nozzles (6) are evenly distributed at the bottom of the spray pipe (5), a fan (13) is provided on the side of the spray tower (1) away from the filter box (2), and the air inlet end of the fan (13) is connected to the spray tower (1) through the air guide pipe (9), and the air outlet end of the fan (13) is connected to the chimney (8).

2. A dust treatment device for phosphogypsum processing according to claim 1, characterized in that: A water collecting tank (12) is provided at the bottom end of the spray tower (1), and a filter screen (10) is provided at the top end of the water collecting tank (12).

3. The dust treatment device for phosphogypsum processing according to claim 1, characterized in that: A water pump (11) is provided at the bottom end of one side of the spray tower (1), and both ends of the water pump (11) are respectively connected to the water collecting tank (12) and the spray pipe (5).

4. The dust treatment device for phosphogypsum processing according to claim 1, characterized in that: An ash discharge pipe (7) is provided at one end of the bottom of the filter box (2), and the interior of the filter box (2) is connected to the ash discharge pipe (7) via a slope.

5. The dust treatment device for phosphogypsum processing according to claim 1, characterized in that: Both sides of the air intake channel (3) are rotatably connected to baffles (20) via a rotating shaft, and one side of the baffle (20) is connected to the inner side wall of the air intake channel (3) via a return spring (19).

6. The dust treatment device for phosphogypsum processing according to claim 1, characterized in that: The bottom of each nozzle (6) is provided with three groups of atomizing nozzles (24), and the water outlets of each atomizing nozzle (24) are provided with uniformly distributed covers (21).

7. The dust treatment device for phosphogypsum processing according to claim 1, characterized in that: The top end of each nozzle (6) is provided with a main channel (22), and the bottom end of each main channel (22) is evenly connected to the atomizing nozzle (24) through a secondary channel (23).

8. The dust treatment device for phosphogypsum processing according to claim 1, characterized in that: A guide rod (15) is provided in the filter box (2) on one side of the screw rod (16), and one side of the driving block (17) is slidably sleeved with the guide rod (15) via a guide sleeve.

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