Phosphogypsum pretreatment device

Abstract

The utility model relates to a phosphogypsum pretreatment device which comprises a tank body and a feed port arranged at one end of the tank body, a track is arranged in the tank body, a cleaning structure connected with the track in a sliding mode is installed in the tank body, and a driving assembly enabling the cleaning structure to rotate through meshing transmission is arranged on the outer side of the tank body. A cleaning structure is arranged on the inner side of the tank body, one end of the cleaning structure extends to the outer side of the tank body and is provided with a sealing end head, and a filtering structure is arranged on one side of the sealing end head. The sealing plate installed in a threaded mode can control a channel between the cleaning cylinder and the filter cylinder to be closed or opened, phosphogypsum can be guided into the filter cylinder by the threaded ring to be filtered and collected, the phosphogypsum cannot make contact with other impurities and objects after being cleaned, the cleaning quality of the phosphogypsum is guaranteed, secondary pollution is avoided after the phosphogypsum is cleaned, and the phosphogypsum cleaning efficiency is improved. And subsequent secondary treatments such as drying and defoaming of the phosphogypsum are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of phosphogypsum water washing, in particular to a phosphogypsum pretreatment device. Background Art

[0002] The composition of phosphogypsum is relatively complex. In addition to calcium sulfate, there are unreacted phosphate rock, residual phosphoric acid, fluorides, acid-insoluble substances, organic matter, etc. Compared with natural gypsum, it contains more impurities, has poor performance, and will have harmful effects during use. Currently, the treatment methods of phosphogypsum include water washing, lime neutralization, ball milling, flotation, screening, calcination, and aging, etc. The selection of the above methods depends on the types and amounts of impurities in phosphogypsum, the utilization routes, and the economy. Selecting a suitable impurity removal method is crucial for the utilization rate of phosphogypsum and environmental protection.

[0003] Currently, the devices for phosphogypsum water washing treatment generally set the discharge port vertically on the ground. After the phosphogypsum is washed, the phosphogypsum will be directly discharged from the device. The surface of the washed phosphogypsum is not yet dry, and there will be foam on the surface of some phosphogypsum blocks, which requires secondary treatment such as drying and defoaming. The direct discharge of phosphogypsum from the device after washing is easy to adhere to dust, affecting the quality of washing and the subsequent use of phosphogypsum, which is very inconvenient. Summary of the Utility Model

[0004] Based on the above description, the utility model provides a phosphogypsum pretreatment device to solve the problem that after the water washing device finishes washing the phosphogypsum, the undried phosphogypsum will be directly discharged from the device, making the washed phosphogypsum vulnerable to recontamination.

[0005] The technical solution of the utility model to solve the above technical problems is as follows: A phosphogypsum pretreatment device includes a tank body and a feed port arranged at one end of the tank body. A track is arranged inside the tank body, and a cleaning structure slidably connected to the track is installed inside the tank body. A driving component for rotating the cleaning structure through meshing transmission is arranged outside the tank body. One end of the cleaning structure extends to the outside of the tank body and is provided with a sealing end head, and a filtering structure is arranged on one side of the sealing end head.

[0006] On the basis of the above technical solution, the utility model can be further improved as follows.

[0007] Further, the track is composed of a first chute and balls. The first chute is opened at both inner ends of the tank body. The balls are installed in the first chute and extend to the outside of the first chute. The balls are annularly and equidistantly distributed around the center of the tank body, and the balls are in contact with each other.

[0008] Furthermore, the cleaning structure consists of a cleaning cylinder. Both ends of the surface of the cleaning cylinder are provided with second sliding grooves. The cleaning cylinder is installed outside the ball through the second sliding grooves. One end of the cleaning cylinder fits with one end of the inner wall of the tank body, and the other end extends outside the tank body.

[0009] Furthermore, a movable groove is provided in the center of the inner side of the tank body. A notch communicating with the movable groove is provided on the surface of the tank body. Tooth blocks extending into the movable groove are installed at equal intervals in a ring shape on the outer side of the cleaning cylinder.

[0010] Furthermore, the sealing end head consists of a reinforcing ring, a sealing plate, and a threaded head. The reinforcing ring is arranged at one end of the cleaning cylinder away from the feed port. A bearing is installed between the reinforcing ring and the tank body. A positioning groove is penetrated and opened on the inner side of the reinforcing ring. The length of the positioning groove is equal to the diameter of the inner side of the reinforcing ring.

[0011] Furthermore, on both sides of the inner wall of the positioning groove close to each other and at one end away from the center of the reinforcing ring, threaded grooves are provided. The two threaded grooves belong to the same thread track. The sealing plate is installed in the positioning groove and fits with the inner wall of the reinforcing ring. The threaded head is rotatably connected to the outer side of the sealing plate and installed in the threaded groove.

[0012] Furthermore, the filtering structure consists of a filtering cylinder. The filtering cylinder is installed on one side of the reinforcing ring away from the tank body. Threaded rings are provided on the inner sides of both the cleaning cylinder and the filtering cylinder, and the spiral directions are the same.

[0013] Furthermore, the driving component consists of a driving motor and a second gear. The driving motor is installed on the outer side of the tank body. The second gear is installed at the output end of the driving motor. The second gear extends into the notch and meshes with the tooth block.

[0014] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0015] In the present utility model, through the cleaning cylinder, the filtering cylinder, and the threaded ring, in cooperation with the reinforcing ring and the sealing plate threadedly installed on the inner side of the reinforcing ring, the threadedly installed sealing plate can control the closing or opening of the channel between the cleaning cylinder and the filtering cylinder. When the phosphogypsum needs to be cleaned, the sealing plate can block between the cleaning cylinder and the filtering cylinder, enabling the cleaning cylinder to form a seal in the tank body for cleaning the phosphogypsum. After the cleaning is completed, with the removal of the sealing plate, the phosphogypsum can be guided by the threaded ring into the filtering cylinder for filtering and collection. The phosphogypsum will not come into contact with other impurities or objects after the cleaning is completed, ensuring the cleaning quality of the phosphogypsum, avoiding secondary pollution after the phosphogypsum is cleaned, and facilitating subsequent secondary treatments such as drying and defoaming of the phosphogypsum. Description of the Drawings

[0016] Figure 1 The structural schematic diagram of a phosphogypsum pretreatment device provided by an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 The partial enlarged schematic diagram of area A in

[0018] Figure 3 The explosion structural schematic diagram of the tank body and the cleaning cylinder in an embodiment of the present utility model;

[0019] Figure 4 The explosion structural schematic diagram of the sealing plate and the reinforcing ring in an embodiment of the present utility model;

[0020] Figure 5 The sectional structural schematic diagram of the connection relationship between the tank body and the cleaning cylinder in an embodiment of the present utility model;

[0021] Figure 6 The sectional structural schematic diagram of the connection relationship between the reinforcing ring and the sealing plate in an embodiment of the present utility model;

[0022] In the drawings, the list of components represented by each reference numeral is as follows:

[0023] 1. Tank body; 11. Feed inlet; 12. First chute; 13. Activity groove; 14. Notch; 2. Cleaning cylinder; 21. Second chute; 22. Tooth block; 3. Reinforcing ring; 31. Positioning groove; 32. Threaded groove; 4. Filter cylinder; 5. Threaded ring; 6. Ball; 7. Bearing; 8. Driving motor; 81. Gear; 9. Sealing plate; 91. Threaded head. Detailed implementation manners

[0024] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of the present application in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0026] Please refer to Figures 1-6, A phosphogypsum pretreatment device of the present utility model includes a tank body 1 and a feed inlet 11 provided at one end of the tank body 1. A track is provided inside the tank body 1, and a cleaning structure slidably connected to the track is installed inside the tank body 1. A driving assembly for rotating the cleaning structure by meshing transmission is provided outside the tank body 1. One end of the cleaning structure extends to the outside of the tank body 1 and is provided with a sealing end head, and a filtering structure is provided on one side of the sealing end head.

[0027] Please refer to Figure 5 , The track is composed of a first chute 12 and a ball 6. The first chute 12 is opened at both inner ends of the tank body 1. The ball 6 is installed in the first chute 12 and extends to the outside of the first chute 12. The balls 6 are annularly and equidistantly distributed around the center of the tank body 1, and the balls 6 are in contact with each other. The cleaning structure consists of a cleaning cylinder 2. Second chutes 21 are opened at both ends of the surface of the cleaning cylinder 2. The cleaning cylinder 2 is installed outside the balls 6 through the second chutes 21. The cooperation between the second chutes 21 on the outside of the cleaning cylinder 2 and the first chutes 12 on the inner side of the tank body 1 can form a complete annular track, restricting the movement path of the balls 6 and at the same time playing a limiting role on the cleaning cylinder 2. The center of the cleaning cylinder 2 can overlap with the center of the tank body 1, maintaining the stability of the cleaning cylinder 2 rotating inside the tank body 1. When moving, the cleaning cylinder can cooperate with the balls 6 to move like an inner shaft ring, with a smooth rotation process and low friction. One end of the cleaning cylinder 2 is in contact with one end of the inner wall of the tank body 1. The end of the cleaning cylinder 2 in contact with the inner wall of the tank body 1 is polished, which can reduce the friction generated when contacting the inner wall of the tank body 1 during the rotation process and can also ensure sealing when contacting the inner wall of the tank body 1. The other end extends to the outside of the tank body 1. An activity groove 13 is opened in the center of the inner side of the tank body 1. A notch 14 communicating with the activity groove 13 is provided on the surface of the tank body 1. The opening of the notch 14 does not affect the sealing performance of the cleaning cylinder 2 and can also drive the gear 81 at the output end of the motor 8 to extend into the tank body 1 to drive the tooth block 22. Tooth blocks 22 extending into the activity groove 13 are annularly and equidistantly installed on the outside of the cleaning cylinder 2.

[0028] Please refer to Figure 6, the sealed end is composed of a reinforcing ring 3, a sealing plate 9 and a threaded head 91. The reinforcing ring 3 is arranged at one end of the cleaning cylinder 2 away from the feed port 11. A bearing 7 is installed between the reinforcing ring 3 and the tank body 1. The reinforcing ring 3 is not only used for connecting and assembling the filter cylinder 4 and the cleaning cylinder 2, but also can be installed at one end of the tank body 1 in cooperation with the bearing 7 to increase the stability of the cleaning cylinder 2 and the filter cylinder 4, and prevent large centrifugal deviation when the cleaning cylinder 2 and the filter cylinder 4 rotate. The inner walls of the reinforcing ring 3, the cleaning cylinder 2 and the filter cylinder 4 belong to the same circular wall surface, which is convenient for the movement of phosphogypsum. A positioning groove 31 is penetrated and opened on the inner side of the reinforcing ring 3. The length of the positioning groove 31 is equal to the diameter of the inner side of the reinforcing ring 3. On both sides of the inner wall of the positioning groove 31 close to each other and at one end away from the center of the reinforcing ring 3, a thread groove 32 is opened. The two thread grooves 32 belong to the same thread track. The sealing plate 9 is installed in the positioning groove 31 and fits with the inner wall of the reinforcing ring 3. The threaded head 91 is rotatably connected to the outside of the sealing plate 9 and installed in the thread groove 32. The positioning groove 31 is used to limit the movement of the sealing plate 9. When the sealing plate 9 is inserted into the positioning groove 31, the sealing plate 9 can only be inserted vertically. With the threaded connection between the threaded head 91 and the thread groove 32, the sealing plate 9 can be completely pushed into the reinforcing ring 3 during the rotation and tightening of the threaded head 91, fit with the inner wall of the reinforcing ring 3 to form a seal, and the sealing plate 9 is fixed through the threaded connection between the threaded head 91 and the thread groove 32, ensuring the stability and sealing effect of the seal.

[0029] Please refer to Figure 6 , the filtering structure is composed of a filter cylinder 4. The filter cylinder 4 is installed on the side of the reinforcing ring 3 away from the tank body 1. Threaded rings 5 are arranged on the inner sides of both the cleaning cylinder 2 and the filter cylinder 4, and the spiral directions are the same. The threaded ring 5 can increase the cleaning efficiency of phosphogypsum inside the cleaning cylinder 2, and after the phosphogypsum is cleaned, in cooperation with the unfolding of the sealing plate 9, the threaded ring 5 can guide the phosphogypsum to the filter cylinder 4 for filtering and collecting the phosphogypsum. The phosphogypsum will not contact other impurities or objects after being cleaned, ensuring the cleaning quality of the phosphogypsum and avoiding secondary pollution after the phosphogypsum is cleaned. Moreover, the phosphogypsum can also be dried and defoamed in the filter cylinder 4, facilitating subsequent secondary treatment.

[0030] Please refer to Figure 2 , the driving assembly is composed of a driving motor 8 and a second gear 81. The driving motor 8 is installed on the outside of the tank body 1, and the second gear 81 is installed at the output end of the driving motor 8. The second gear 81 extends into the notch 14 and meshes with the tooth block 22. The driving motor 8 is a servo motor of model ECMA - E21320SS. Through the meshing transmission between the gear 81 and the tooth block 22, the driving motor 8 can drive the cleaning cylinder 2 to rotate uniformly in the tank body 1 to perform rolling cleaning on the phosphogypsum in the cleaning cylinder 2.

[0031] When it is necessary to clean phosphogypsum, first add the phosphogypsum and the cleaning liquid into the cleaning cylinder 2 through the feed port 11. Then start the driving motor 8. The gear 81 at the output end of the driving motor 8 rotates. The gear 81 drives through meshing with the tooth block 22, so that the cleaning cylinder 2 rotates inside the tank body 1 through the balls 6, and mixes and stirs the phosphogypsum and the cleaning liquid to achieve the cleaning effect. After the phosphogypsum cleaning is completed, rotate the threaded head 91 to cancel the fixation, and take out the sealing plate 9 from the inside of the reinforcing ring 3. The reinforcing ring 3 cancels the seal, and the cleaning liquid can flow from the cleaning cylinder 2 to the filter cylinder 4 for discharge. The phosphogypsum can slowly move into the filter cylinder 4 under the push of the threaded ring 5, and is filtered and separated from the cleaning liquid. Then turn off the driving motor 8, and the cleaning cylinder 2 and the filter cylinder 4 stop rotating, and the phosphogypsum is left alone in the filter cylinder 4 for subsequent processing.

[0032] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprises / include" or "has" etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A phosphogypsum pretreatment device, comprising a tank body (1) and a feed inlet (11) arranged at one end of the tank body (1), characterized in that: A track is provided inside the tank body (1), a cleaning structure slidably connected to the track is installed inside the tank body (1), a driving assembly for rotating the cleaning structure by meshing transmission is provided outside the tank body (1), one end of the cleaning structure extends to the outside of the tank body (1), and a sealing end is provided, and a filtering structure is provided on one side of the sealing end.

2. The phosphogypsum pretreatment device according to claim 1, wherein: The track is composed of a first chute (12) and balls (6). The first chute (12) is opened at both inner ends of the tank body (1). The balls (6) are installed in the first chute (12) and extend to the outside of the first chute (12). The balls (6) are annularly and equidistantly distributed with the center of the tank body (1) as the center point, and the balls (6) are in contact with each other.

3. The phosphogypsum pretreatment device according to claim 2, wherein: The cleaning structure is composed of a cleaning cylinder (2). Second chutes (21) are opened at both ends of the surface of the cleaning cylinder (2). The cleaning cylinder (2) is installed outside the balls (6) through the second chutes (21). One end of the cleaning cylinder (2) is in contact with one end of the inner wall of the tank body (1), and the other end extends to the outside of the tank body (1).

4. The phosphogypsum pretreatment device according to claim 3, wherein: An activity groove (13) is opened in the center of the inner side of the tank body (1). A notch (14) communicating with the activity groove (13) is provided on the surface of the tank body (1). Tooth blocks (22) extending into the activity groove (13) are annularly and equidistantly installed on the outside of the cleaning cylinder (2).

5. The phosphogypsum pretreatment device according to claim 3, characterized in that: The sealing end is composed of a reinforcing ring (3), a sealing plate (9) and a threaded head (91). The reinforcing ring (3) is provided at one end of the cleaning cylinder (2) away from the feed port (11). A bearing (7) is installed between the reinforcing ring (3) and the tank body (1). A positioning groove (31) is penetrated and opened inside the reinforcing ring (3). The length of the positioning groove (31) is equal to the inner diameter of the reinforcing ring (3).

6. The phosphogypsum pretreatment device according to claim 5, characterized in that: Thread grooves (32) are opened on both sides of the inner wall of the positioning groove (31) close to each other and at one end away from the center of the reinforcing ring (3). The two thread grooves (32) belong to the same thread track. The sealing plate (9) is installed in the positioning groove (31) and is in contact with the inner wall of the reinforcing ring (3). The threaded head (91) is rotatably connected to the outside of the sealing plate (9) and is installed in the thread groove (32).

7. The phosphogypsum pretreatment device according to claim 5, wherein: The filtering structure is composed of a filtering cylinder (4). The filtering cylinder (4) is installed on the side of the reinforcing ring (3) away from the tank body (1). Threaded rings (5) are provided on the inner sides of both the cleaning cylinder (2) and the filtering cylinder (4), and the spiral directions are the same.

8. The phosphogypsum pretreatment device according to claim 4, wherein: The driving assembly is composed of a driving motor (8) and a second gear (81). The driving motor (8) is installed outside the tank body (1). The second gear (81) is installed at the output end of the driving motor (8). The second gear (81) extends into the notch (14) and meshes with the tooth blocks (22).

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