A telescopic cloth bag filter for filtering of fluorite fine powder

Abstract

A telescopic cloth bag filter for filtering fluorite concentrate powder relates to a fluorite concentrate powder filtering device, which comprises a tank (17), a rotating mechanism and a telescopic mechanism. The tank (17) is of an open-top structure. The rotating mechanism comprises a rotating drum (10), which is located at one side above the tank (17) and can rotate under the support of support shaft A (15) and support shaft B (38) arranged at both ends of the rotating drum (10). The telescopic mechanism is arranged on the rotating drum (10). The telescopic drum with a cloth bag sleeve is used to suck fluorite concentrate powder in fluorite concentrate ore slurry by using negative pressure. When the telescopic drum rotates above the storage pool, the telescopic middle cylinder and the telescopic inner cylinder are contracted, and fluorite concentrate powder adsorbed on the cloth bag sleeve is scraped by cone cylinder A and cone cylinder B, so that the telescopic drum can rotate and suck fluorite concentrate powder in three-dimensional mode, and the fluorite concentrate powder has a large contact surface and good precipitation effect.

Description

Technical Field

[0001] This invention relates to a fluorite powder filtration device, and more particularly to a telescopic bag filter for fluorite powder filtration. Background Technology

[0002] After fluorite concentrate undergoes flotation and purification in the concentrator, it needs to be dewatered, a process typically performed using a vacuum filter. Existing vacuum filters are generally disc filters, which are devices that use vacuum to separate the solid and liquid components of a mineral slurry. In the slurry tank, a vacuum pump creates a pressure difference across the filter media on the disc of the disc vacuum filter. This pressure causes the fluorite concentrate particles in the slurry to be adsorbed onto the filter media, forming a filter cake. As the filter disc rotates, the fluorite concentrate filter cake leaves the liquid surface and continues to lose moisture under vacuum. It is then scraped off by a scraper in the discharge area of ​​the filter disc and falls into a lower trough onto a conveyor belt located below the disc vacuum filter.

[0003] The existing disc vacuum filter uses a paddle-type agitator. Due to the large gap between the agitator and the filter disc, some areas are not fully agitated during mixing, resulting in uneven concentration of fluorite concentrate slurry in the tank. This is not conducive to adsorption by the filter sector. Furthermore, since the fluorite concentrate slurry in the tank can only adhere to both sides of the filter disc through negative pressure, the concentration of fluorite concentrate particles on both sides of the filter disc becomes too low after continuous adsorption. This leads to uneven overall concentration of fluorite concentrate particles in the tank, which is not conducive to more efficient precipitation of fluorite concentrate particles. In addition, the adsorption of fluorite concentrate particles on both sides of the filter disc is planar adsorption, which has limited adsorption effect. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, this invention discloses a telescopic bag filter for filtering fluorite concentrate. By setting a rotating drum mechanism at the top of the tank and a telescopic mechanism on the rotating drum, the telescopic drum, fitted with a bag sleeve, uses negative pressure to draw in the fluorite concentrate slurry. When the telescopic drum rotates above the storage tank, the telescopic middle drum and the telescopic inner drum contract and use cone A and cone B to scrape off the fluorite concentrate adsorbed on the bag sleeve. This achieves three-dimensional rotational suction of the telescopic drum when drawing in fluorite concentrate, resulting in a large suction contact area and good precipitation effect.

[0005] To achieve the aforementioned objective, the present invention employs the following technical solution: A telescopic bag filter for filtering fluorite concentrate includes a tank, a rotating mechanism, and a telescopic mechanism. The tank has an open top. The rotating mechanism includes a rotating cylinder located above the tank and supported by support shafts A and B at its two ends, enabling it to rotate. A cavity is provided inside the rotating cylinder, and a negative pressure pump with a connecting pipe passes through the cavity to draw negative pressure. A telescopic mechanism is provided on the rotating cylinder, comprising a telescopic cylinder and an electric telescopic rod. The telescopic cylinder includes a telescopic outer cylinder, one end of which is fixedly connected to the rotating cylinder, and the inner cavity of the outer cylinder communicates with the inner cylinder cavity. A cone B is provided at the other end of the outer cylinder, and one end of a telescopic middle cylinder passes through cone B and extends into the other end of the outer cylinder, slidingly connecting with it. A cone A is provided at the other end of the middle cylinder, and one end of a telescopic inner cylinder passes through cone A and extends into the telescopic middle cylinder. The other end of the middle cylinder is slidably connected to the telescopic middle cylinder. The telescopic middle cylinder includes a middle cylinder mesh cage and a middle cylinder cloth bag cover covering the middle cylinder mesh cage. The telescopic inner cylinder includes an inner cylinder mesh cage and an inner cylinder cloth bag cover covering the inner cylinder mesh cage. A guard plate is provided at the other end of the telescopic inner cylinder. An electric telescopic rod is installed inside the telescopic cylinder. The electric telescopic rod includes a telescopic outer rod. One end of the telescopic outer rod is fixedly connected to the inner wall of the cylinder cavity. One end of the telescopic inner rod extends into the other end of the telescopic outer rod and is slidably connected to the telescopic outer rod. A motor is provided at the other end of the telescopic inner rod. The end of the motor with a rotating shaft is fixedly connected to the guard plate. When the telescopic cylinder is extended and rotated to the side of the tank, both the telescopic middle cylinder and the telescopic inner cylinder are located outside the side of the tank. When the telescopic cylinder is extended and rotated to the other side of the tank, both the telescopic middle cylinder and the telescopic inner cylinder are located at the top of the tank.

[0006] The telescopic bag filter for filtering fluorite concentrate has multiple racks arranged around the outer wall of one end of the rotating drum, a forward and reverse motor is provided on the side of one end of the rotating drum, a gear is sleeved on the output shaft of the forward and reverse motor, the gear and the rack mesh, and a support column A is provided at the bottom of the forward and reverse motor.

[0007] The telescopic bag filter for filtering fluorite concentrate has a perforation A at one end of the rotating drum, and a support shaft A is rotatably connected to the perforation A. A perforation B is provided at the other end of the rotating drum, and a support shaft B is rotatably connected to the perforation B. Support columns B are provided at the bottom of the parts of the support shaft A and support shaft B located outside the rotating drum.

[0008] The telescopic bag filter for filtering fluorite concentrate has a through hole A between the middle parts of the two ends of the support shaft A, and the connecting pipe of the negative pressure pump is connected to the through hole A located outside the rotating drum.

[0009] The telescopic bag filter for filtering fluorite concentrate has a through hole B between the bottom of the two end faces of the support shaft B. A return pipe extending into the tank is provided at the opening of the through hole B located outside the rotating drum, and a valve is provided on the return pipe.

[0010] The telescopic bag filter for filtering fluorite concentrate has a storage tank on the outside of one side of the tank.

[0011] The telescopic bag filter for filtering fluorite concentrate has a speed reducer between the motor and the rotating shaft.

[0012] The telescopic bag filter for filtering fluorite concentrate has a retaining ring A at one end of the telescopic inner cylinder, a retaining block B on the inner wall of the cone cylinder A, and a retaining block A with the same shape as the retaining block B on the retaining ring A.

[0013] The telescopic bag filter for filtering fluorite concentrate has a retaining ring B at one end of the telescopic middle cylinder.

[0014] The telescopic bag filter used for filtering fluorite concentrate has a rotating drum with a diameter larger than that of the telescopic drum.

[0015] Due to the adoption of the above technical solution, the present invention has the following beneficial effects: The telescopic bag filter for fluorite concentrate filtration described in this invention utilizes a rotating drum mechanism at the top of the tank, along with a telescopic mechanism on the rotating drum. The telescopic drum, fitted with a bag sleeve, draws in fluorite concentrate slurry using negative pressure. When the telescopic drum rotates above the storage tank, the telescopic middle and inner drums retract, and cones A and B scrape off the fluorite concentrate adsorbed on the bag sleeve. This achieves three-dimensional rotating suction of the telescopic drum, resulting in a large suction contact area and excellent precipitation effect. This invention features a reasonable structure, high precipitation rate, high yield, and simple operation, making it highly valuable for widespread application. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the rotating mechanism and the telescopic mechanism of the present invention; Figure 3 This is a schematic diagram of the internal structure of the telescopic mechanism of the present invention when it is extended; Figure 4 This is a schematic diagram of the internal structure of the telescopic mechanism of the present invention when it is shortened; Figure 5 This is a schematic diagram of the structure when the present invention is used. Figure 1 ; Figure 6 This is a schematic diagram of the structure when the present invention is used. Figure 2 ; Figure 7 This is a schematic diagram of the structure when the present invention is used. Figure 3 ; Figure 8 This is a schematic diagram of the structure when the present invention is used. Figure 4 .

[0017] In the diagram: 1. Gear; 2. Telescopic inner cylinder; 3. Inner cylinder bag sleeve; 4. Conical cylinder A; 5. Middle cylinder bag sleeve; 6. Telescopic middle cylinder; 7. Conical cylinder B; 8. Telescopic outer cylinder; 9. Telescopic cylinder; 10. Rotary cylinder; 11. Storage tank; 12. Support column A; 13. Support column B; 14. Forward and reverse motor; 15. Support shaft A; 16. Rack; 17. Tank; 18. Connecting pipe; 19. Negative pressure pump; 20. Return. Flow tube; 21. Cylinder cavity; 22. Electric telescopic rod; 23. Through hole A; 24. Perforation A; 25. Guard plate; 26. Rotating shaft; 27. Reducer; 28. Motor; 29. ​​Inner cylinder mesh cage; 30. Telescopic inner rod; 31. Retaining ring A; 32. Stop block A; 33. Stop block B; 34. Middle cylinder mesh cage; 35. Retaining ring B; 36. Telescopic outer rod; 37. Through hole B; 38. Support shaft B; 39. Perforation B. Detailed Implementation

[0018] The present invention can be explained in more detail through the following embodiments. The present invention is not limited to the following embodiments. The purpose of disclosing the present invention is to protect all changes and modifications within the scope of the present invention. Combined with appendix Figures 1-4The telescopic bag filter for fluorite concentrate filtration includes a tank 17, a rotating mechanism, and a telescopic mechanism. The tank 17 has an open top, and a storage tank 11 is provided on the outside of one side of the tank 17. The rotating mechanism includes a rotating cylinder 10, which is located above the tank 17 and can rotate under the support of support shafts A15 and B38 at both ends. Multiple racks 16 are arranged around the outer wall of one end of the rotating cylinder 10. A forward and reverse motor 14 is provided on the side of one end of the rotating cylinder 10. A gear 1 is sleeved on the output shaft of the forward and reverse motor 14, and the gear 1 meshes with the racks 16. The bottom of the reversing motor 14 is provided with a support column A12. A through hole A24 is provided at one end of the rotating drum 10, and a support shaft A15 is rotatably connected to the through hole A24. A through hole B39 is provided at the other end of the rotating drum 10, and a support shaft B38 is rotatably connected to the through hole B39. Support columns B13 are provided at the bottom of the portions of support shafts A15 and B38 located outside the rotating drum 10. A through hole A23 is provided between the middle portions of the two ends of support shaft A15, and the connecting pipe 18 of the negative pressure pump 19 communicates with the through hole A23 located outside the rotating drum 10. A through hole B37 is provided between the bottom of the two end faces of support shaft B38.A return pipe 20 extending into the tank 17 is provided at the through hole B37 located outside the rotating drum 10. A valve is provided on the return pipe 20. A cylinder cavity 21 is provided inside the rotating drum 10. A connecting pipe 18 of the negative pressure pump 19 passes through the cylinder cavity 21 to draw negative pressure. A telescopic mechanism is provided on the rotating drum 10. The telescopic mechanism includes a telescopic cylinder 9 and an electric telescopic rod 22. The telescopic cylinder 9 includes a telescopic outer cylinder 8. One end of the telescopic outer cylinder 8 is fixed to the rotating drum 10. The inner cavity of the telescopic outer cylinder 8 communicates with the cylinder cavity 21. A cone is provided at the other end of the telescopic outer cylinder 8. B7, one end of the telescopic middle cylinder 6 passes through the cone cylinder B7 and extends into the other end of the telescopic outer cylinder 8, and is slidably connected to the telescopic outer cylinder 8. A retaining ring B35 is provided at one end of the telescopic middle cylinder 6, and a cone cylinder A4 is provided at the other end of the telescopic middle cylinder 6. One end of the telescopic inner cylinder 2 passes through the cone cylinder A4 and extends into the other end of the telescopic middle cylinder 6, and is slidably connected to the telescopic middle cylinder 6. A retaining ring A31 is provided at one end of the telescopic inner cylinder 2, and a stop block B33 is provided on the inner wall of the cone cylinder A4. A stop block with the same shape as the stop block B33 is provided on the retaining ring A31. Block A32, the telescopic middle cylinder 6 includes a middle cylinder mesh cage 34 and a middle cylinder cloth bag cover 5 covering the middle cylinder mesh cage 34. The telescopic inner cylinder 2 includes an inner cylinder mesh cage 29 and an inner cylinder cloth bag cover 3 covering the inner cylinder mesh cage 29. A guard plate 25 is provided at the other end of the telescopic inner cylinder 2. The electric telescopic rod 22 is installed inside the telescopic cylinder 9. The electric telescopic rod 22 includes a telescopic outer rod 36. One end of the telescopic outer rod 36 is fixedly connected to the inner wall of the cylinder cavity 21. One end of the telescopic inner rod 30 extends into the other end of the telescopic outer rod 36 and is connected to the telescopic outer rod 36. A sliding connection is used. A motor 28 is located at the other end of the telescopic inner rod 30. The motor 28 has a rotating shaft 26 at one end, which is fixedly connected to the guard plate 25. A reducer 27 is located between the motor 28 and the rotating shaft 26. When the telescopic cylinder 9 extends and rotates to a lateral position on one side of the trough 17, both the telescopic middle cylinder 6 and the telescopic inner cylinder 2 are located outside the side of the trough 17. When the telescopic cylinder 9 extends and rotates to a lateral position on the other side of the trough 17, both the telescopic middle cylinder 6 and the telescopic inner cylinder 2 are located at the top of the trough 17. The diameter of the rotating cylinder 10 is larger than the diameter of the telescopic cylinder 9.

[0019] To implement the telescopic bag filter for fluorite powder filtration described in this invention, the reversible motor 14, negative pressure pump 19, electric telescopic rod 22, and motor 28 are connected to a switch and a power supply, respectively. The required amount of fluorite powder slurry is injected into the tank 17, and the fluorite powder slurry in the tank 17 is stirred using a stirring device (this device is prior art and therefore not described in detail in this invention). Combined with the attached... Figure 5The forward and reverse motor 14 is started. The output shaft of the forward and reverse motor 14 drives the gear 1 to rotate, which in turn drives the rotating drum 10, which is meshed with the rack 16, to rotate, making the telescopic drum 9 vertically downward. The electric telescopic rod 22 is started, extending the telescopic inner rod 30, causing the telescopic middle cylinder 6 and the telescopic inner cylinder 2 to extend and be immersed below the surface of the fluorite concentrate slurry. The motor 28 is started, causing the telescopic middle cylinder 6 and the telescopic inner cylinder 2 to rotate (the setting of the stop block A32 and the stop block B33 allows the telescopic inner cylinder 2 to drive the telescopic middle cylinder 6 to rotate). The valve on the return pipe 20 is closed, and the negative pressure pump 19 is turned on. The negative pressure pump 19 draws negative pressure into the cylinder cavity 21 through the connecting pipe 18, and then draws negative pressure into the inner cavity of the telescopic drum 9. Due to the telescopic... The middle cylinder 6 consists of a middle cylinder mesh cage 34 and a middle cylinder cloth bag sleeve 5 covering the middle cylinder mesh cage 34. The telescopic inner cylinder 2 consists of an inner cylinder mesh cage 29 and an inner cylinder cloth bag sleeve 3 covering the inner cylinder mesh cage 29. Therefore, the middle cylinder cloth bag sleeve 5 and the inner cylinder cloth bag sleeve 3 form an air intake channel. When the moisture in the fluorite concentrate slurry is slightly drawn into the telescopic cylinder 9, the fluorite concentrate particles in the fluorite concentrate slurry are adhered to the outer surfaces of the middle cylinder cloth bag sleeve 5 and the inner cylinder cloth bag sleeve 3. The rotating telescopic middle cylinder 6 and the telescopic inner cylinder 2 facilitate the uniform adhesion of the fluorite concentrate particles in the tank 17 by the middle cylinder cloth bag sleeve 5 and the inner cylinder cloth bag sleeve 3. When the amount of fluorite concentrate particles adhered to the outer surfaces of the middle cylinder cloth bag sleeve 5 and the inner cylinder cloth bag sleeve 3 reaches the required amount, combined with the attached... Figure 6 Start the forward and reverse motor 14 to rotate the drum 10, causing the end of the telescopic drum 9 to move from the bottom of the telescopic drum 9 to the other side of the tank 17 until the telescopic drum 9 becomes horizontal and leaves the fluorite concentrate slurry (because when the telescopic drum 9 extends and rotates to the other side of the tank 17, the telescopic middle drum 6 and the telescopic inner drum 2 are both located at the top of the tank 17, so the end of the telescopic drum 9 is not obstructed when moving to the other side of the tank 17). (This is in conjunction with the attached...) Figure 1 Continue rotating the drum 10, gradually bringing the end of the telescopic drum 9 to the top. Under the continuous negative pressure absorption of the negative pressure pump 19, the moisture contained in the fluorite powder particles adhering to the outer surfaces of the middle drum bag sleeve 5 and the inner drum bag sleeve 3 is continuously absorbed and flows along the inner wall of the telescopic drum 9 to the bottom of the drum 10, combined with the attached... Figure 7 Continue rotating the rotating drum 10, causing the end of the telescopic drum 9 to move from the top of the telescopic drum 9 towards the side of the tank 17 until the telescopic drum 9 becomes horizontal and above the storage tank 11 (because the diameter of the rotating drum 10 is larger than the diameter of the telescopic drum 9, the water sucked into the bottom of the rotating drum 10 will not flow back into the telescopic drum 9; and because the through hole A23 connecting the negative pressure pump 19 is located in the middle of the two ends of the support shaft A15, the water sucked into the bottom of the rotating drum 10 will not flow into the negative pressure pump 19). Combined with the attached... Figure 8Start the electric telescopic rod 22, and gradually retract the telescopic inner rod 30 into the telescopic outer rod 36, which in turn drives the telescopic middle cylinder 6 and the telescopic inner cylinder 2 to gradually retract into the telescopic outer cylinder 8. The cone B7 at the other end of the telescopic outer cylinder 8 and the cone A4 at the other end of the telescopic middle cylinder 6 can effectively scrape off the fluorite powder particles adhering to the outer surface of the middle cylinder bag sleeve 5 and the inner cylinder bag sleeve 3. The rotating telescopic middle cylinder 6 and the telescopic inner cylinder 2 can scrape off the fluorite powder particles adhering to the outer surface of the middle cylinder bag sleeve 5 and the inner cylinder bag sleeve 3 and they all fall into the storage tank 11. When the telescopic middle cylinder 6 and the telescopic inner cylinder 2 are completely retracted into the telescopic outer cylinder 8, the fluorite powder particles adhering to the outer surface of the middle cylinder bag sleeve 5 and the inner cylinder bag sleeve 3 are also scraped clean. Rotate the drum 10 in the opposite direction until the end of the telescopic drum 9 is located at the bottom of the telescopic drum 9. Start the electric telescopic rod 22 and repeat the above steps to extend the telescopic inner rod 30, which will drive the telescopic middle cylinder 6 and the telescopic inner cylinder 2 to extend and be immersed below the surface of the fluorite concentrate slurry. This will realize another fluorite concentrate precipitation process. When the telescopic drum 9 is located above the storage tank 11 after multiple fluorite concentrate particle scraping steps, and there is too much water left in the drum 10 after the telescopic middle cylinder 6 and the telescopic inner cylinder 2 have contracted, turn off the negative pressure pump 19, open the valve to completely drain the water left in the drum 10 into the tank 17, and then close the valve and turn on the negative pressure pump 19 to carry out the next precipitation process.

[0020] The parts of this invention not described in detail are prior art.

Claims

1. A telescopic bag filter for filtering fluorite concentrate, characterized in that: The system includes a tank (17), a rotating mechanism, and a telescopic mechanism. The tank (17) has an open top. The rotating mechanism includes a rotating cylinder (10). The rotating cylinder (10) is located on one side above the tank (17) and can rotate under the support of support shafts A (15) and B (38) at both ends. A cylinder cavity (21) is provided inside the rotating cylinder (10). A connecting pipe (18) of a negative pressure pump (19) passes through the cylinder cavity (21) to draw negative pressure. A telescopic mechanism is provided on the rotating cylinder (10). The telescopic mechanism includes a telescopic cylinder (9) and an electric telescopic rod (22). (9) Includes a telescopic outer cylinder (8), one end of which is fixedly connected to a rotating cylinder (10), the inner cavity of the telescopic outer cylinder (8) and the cylinder cavity (21) are connected, a cone B (7) is provided at the other end of the telescopic outer cylinder (8), one end of the telescopic middle cylinder (6) passes through the cone B (7) and extends into the other end of the telescopic outer cylinder (8) and is slidably connected with the telescopic outer cylinder (8), a cone A (4) is provided at the other end of the telescopic middle cylinder (6), one end of the telescopic inner cylinder (2) passes through the cone A (4) and extends into the other end of the telescopic middle cylinder (6) and is slidably connected with the telescopic middle cylinder (6). The telescopic middle cylinder (6) includes a middle cylinder mesh cage (34) and a middle cylinder cloth bag cover (5) covering the middle cylinder mesh cage (34). The telescopic inner cylinder (2) includes an inner cylinder mesh cage (29) and an inner cylinder cloth bag cover (3) covering the inner cylinder mesh cage (29). A guard plate (25) is provided at the other end of the telescopic inner cylinder (2). An electric telescopic rod (22) is installed inside the telescopic cylinder (9). The electric telescopic rod (22) includes a telescopic outer rod (36). One end of the telescopic outer rod (36) is fixedly connected to the inner wall of the cylinder cavity (21). One end of the telescopic inner rod (30) extends into the inner wall of the cylinder cavity (21). The other end of the telescopic outer rod (36) is slidably connected to the telescopic outer rod (36). The other end of the telescopic inner rod (30) is provided with a motor (28). The motor (28) is provided with the end of the rotating shaft (26) and the guard plate (25) fixedly connected. When the telescopic cylinder (9) is extended and rotated to the side of the tank (17), the telescopic middle cylinder (6) and the telescopic inner cylinder (2) are both located outside the side of the tank (17). When the telescopic cylinder (9) is extended and rotated to the other side of the tank (17), the telescopic middle cylinder (6) and the telescopic inner cylinder (2) are both located at the top of the tank (17).

2. The telescopic bag filter for filtering fluorite concentrate according to claim 1, characterized in that: Multiple racks (16) are arranged around the outer wall of one end of the rotating drum (10). A forward and reverse motor (14) is provided on the side of one end of the rotating drum (10). A gear (1) is sleeved on the output shaft of the forward and reverse motor (14). The gear (1) and the rack (16) mesh. A support column A (12) is provided at the bottom of the forward and reverse motor (14).

3. The telescopic bag filter for filtering fluorite concentrate according to claim 1, characterized in that: A through hole A (24) is provided at one end of the rotating drum (10), and the support shaft A (15) is rotatably connected to the through hole A (24). A through hole B (39) is provided at the other end of the rotating drum (10), and the support shaft B (38) is rotatably connected to the through hole B (39). A support column B (13) is provided at the bottom of the part of the support shaft A (15) and the support shaft B (38) located outside the rotating drum (10).

4. The telescopic bag filter for filtering fluorite concentrate according to claim 1, characterized in that: A through hole A (23) is provided between the middle parts of the two ends of the support shaft A (15), and the connecting pipe (18) of the negative pressure pump (19) and the through hole A (23) located outside the rotating drum (10) are connected.

5. The telescopic bag filter for fluorite powder filtration according to claim 1, characterized in that: in A through hole B (37) is provided between the bottom of the two ends of the support shaft B (38). A return pipe (20) extending into the tank (17) is provided at the opening of the through hole B (37) located outside the rotating drum (10). A valve is provided on the return pipe (20).

6. The telescopic bag filter for filtering fluorite concentrate according to claim 1, characterized in that: A storage tank (11) is provided on the outside of one side of the tank (17).

7. The telescopic bag filter for filtering fluorite concentrate according to claim 1, characterized in that: A speed reducer (27) is provided between the motor (28) and the shaft (26).

8. The telescopic bag filter for filtering fluorite concentrate according to claim 1, characterized in that: in A retaining ring A (31) is provided at one end of the telescopic inner cylinder (2), a retaining block B (33) is provided on the inner wall of the cone cylinder A (4), and a retaining block A (32) with the same shape as the retaining block B (33) is provided on the retaining ring A (31).

9. The telescopic bag filter for filtering fluorite concentrate according to claim 1, characterized in that: A retaining ring B (35) is provided at one end of the telescopic cylinder (6).

10. The telescopic bag filter for filtering fluorite concentrate according to claim 1, characterized in that: The diameter of the rotating drum (10) is larger than the diameter of the telescopic drum (9).

Images