A drum-type rotary screening device for aggregating phosphate

Abstract

The utility model provides a drum type rotary screening device for polymeric phosphate, and the device body includes a screening box and a screening drum located in the screening box, the outer peripheral wall of the screening drum is provided with uniformly distributed screening holes, a cross pipe is arranged above the screening drum in the screening drum, a rotating pipe is arranged in the cross pipe, the outer peripheral wall of the rotating pipe is provided with axially arranged air outlet holes, and the outer peripheral wall of the cross pipe is provided with a rectangular air outlet hole opposite to the top of the screening drum. In the utility model, the cross pipe above the screening drum is additionally arranged in the screening box, then the rotating pipe is arranged in the cross pipe, finally the rectangular air outlet is arranged at the bottom of the cross pipe, and a row of air outlet holes is arranged on the outer wall of the rotating pipe, so that the rotating pipe can pulse air blow and dredge the screening holes of the top wall of the screening drum in the process of rotation, the clogging of the screening holes is eliminated, and the screening efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of phosphate screening equipment, specifically a drum-type rotary screening device for polymeric phosphates. Background Technology

[0002] Phosphate processing requires screening. Traditionally, mesh screens are mostly used, which are inefficient. Therefore, many manufacturers on the market now use drum screens for screening. However, drum screens have a large centrifugal force, which generates a lot of dust.

[0003] Utility model CN216728114U discloses a rotary drum screening device for phosphates, including a collection bin, a rotating shaft inside the collection bin, a drum fixedly connected to the outside of the shaft, the shaft being located at the center of the drum, multiple screening holes opened on the side wall of the drum, an open top of the collection bin, and a fixed rod fixedly connected to one side of the drum inside the collection bin. This utility model features a fixing ring on the outside of the drum, with evenly distributed arc-shaped teeth on its surface. When the drum rotates, these arc-shaped teeth move on a striking arc plate on the fixed rod, causing the striking arc plate to deform. During this deformation, the plate strikes the fixing ring, causing the drum to vibrate. Thus, when material adheres to the inner wall of the drum, the vibration causes the material to move away from the inner wall, preventing material accumulation and blockage of the screening holes.

[0004] However, the existing technology has its shortcomings in use: because the drum needs to rotate at high speed, the elastic force of the striking arc plate is low in order to reduce wear and noise. Since the drum has a certain load-bearing function, its strength is high. Therefore, the method of striking the drum with the striking arc plate can shake away the adhering material on the inner wall of the drum to a certain extent, but the unblocking effect is poor. Specifically, the blockage in the screening hole is difficult to shake away, which also leads to the problem of low screening efficiency.

[0005] Therefore, this utility model provides a drum-type rotary sieve device for polyphosphate. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a drum-type rotary screening device for polyphosphates to solve the problems mentioned in the background art. This utility model has the advantages of improving the efficiency and reliability of screen hole unclogging.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a drum-type rotary sieving device for polymeric phosphates, comprising a device body, the device body including a sieving box and a sieving drum located inside the sieving box, the outer peripheral wall of the sieving drum having uniformly distributed sieving holes, a horizontal tube located above the sieving drum being provided inside the sieving drum, a rotating tube being provided inside the horizontal tube, the outer peripheral wall of the rotating tube having axially arranged air outlet holes, and the outer peripheral wall of the horizontal tube having rectangular exhaust holes opposite to the top of the sieving drum.

[0008] Furthermore, one end of the horizontal tube is fixedly connected to one side inside the screening box, one end of the rotating tube passes through one side of the screening box and the two are rotatably connected, a groove-shaped positioning plate is fixedly connected to one side outside the screening box, a rotating pipe is fixedly connected to one side of the groove-shaped positioning plate, and one end of the rotating pipe is sleeved on one end of the rotating tube and the two are rotatably connected.

[0009] Furthermore, a control motor is fixedly connected to one side of the slotted positioning plate, and a drive gear is fixedly connected to the output shaft of the control motor. A driven gear that meshes with the drive gear is fixedly sleeved on the outside of the rotating tube.

[0010] Furthermore, the rotating tube and the horizontal tube are coaxial, the outer diameter of the rotating tube is smaller than the inner diameter of the horizontal tube, and a sealing ring is bonded to the inner wall of the horizontal tube, located on the outer periphery of the rectangular exhaust hole, with one side of the sealing ring abutting against the outer wall of the rotating tube.

[0011] Furthermore, a conical gas-gathering hood is welded to the bottom of the outer peripheral wall of the horizontal tube, and the rectangular exhaust hole is located inside the conical gas-gathering hood. The large end of the conical gas-gathering hood is opposite to the top wall of the screening drum.

[0012] Furthermore, a rubber pad is bonded to the large end of the conical gas-gathering hood, and one side of the rubber pad is in contact with the top wall of the screening drum.

[0013] Furthermore, an exhaust box communicating with the inner cavity is fixedly connected to the upper end face of the screening box, and filter cotton is provided inside the exhaust box.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, a horizontal pipe is added above the screening drum in the screening box, and a rotating pipe is set inside the horizontal pipe. Finally, a rectangular exhaust port is opened at the bottom of the horizontal pipe, and an exhaust hole is opened on the outer wall of the rotating pipe. This allows the rotating pipe to unclog the screening holes on the top wall of the screening drum with pulse air during rotation, eliminating blockages in the screening holes and greatly improving the screening efficiency.

[0016] 2. In this utility model, by setting an exhaust box with exhaust filtration function at the top of the screening box, the rotating pipe can reliably spray gas at a certain pressure, making air blowing and clearing more reliable, while preventing dust pollution. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the screening box, screening drum, horizontal pipe and rotating pipe of a rotary drum screening device for polyphosphates according to this utility model.

[0018] Figure 2 for Figure 1 The main view;

[0019] Figure 3 for Figure 1 A diagram of the back;

[0020] Figure 4 This is a schematic diagram showing the exploded unfolding of the screening drum, rotating tube, horizontal tube, and sealing ring of a rotary drum screening device for polyphosphates according to this utility model.

[0021] Figure 5 for Figure 4 A diagram of the back;

[0022] In the diagram: 1. Screening box; 11. Groove positioning plate; 2. Screening drum; 3. Screening hole; 4. Horizontal pipe; 41. Rectangular exhaust hole; 42. Conical air-gathering hood; 421. Rubber pad; 5. Rotary pipe; 51. Air outlet; 6. Transfer pipe; 7. Control motor; 71. Drive gear; 8. Driven gear; 9. Sealing ring; 101. Exhaust box; 102. Filter cotton. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please see Figures 1 to 4 This utility model provides a technical solution: a drum-type rotary screening device for polyphosphate, including a device body, the device body including a screening box 1 and a screening drum 2 located in the screening box 1, the outer peripheral wall of the screening drum 2 is provided with uniformly distributed screening holes 3, and the polyphosphate particles inside the screening drum 2 are screened out through the screening holes 3 when the screening drum 2 rotates.

[0025] In this technical solution, a horizontal pipe 4 is installed inside the screening drum 2, located above the screening drum 2. The horizontal pipe 4 is parallel to the screening drum 2, and its length is greater than that of the screening drum 2. A rotating pipe 5 is installed inside the horizontal pipe 4. The outer peripheral wall of the rotating pipe 5 has axially arranged air outlets 51, and the outer peripheral wall of the horizontal pipe 4 has a rectangular exhaust hole 41 opposite to the top of the screening drum 2. During the rotation of the rotating pipe 5, when the air outlets 51 and the rectangular exhaust holes 41 coincide, high-pressure gas is ejected from the air outlets 51. The high-pressure gas impacts the screening holes 3 on the top wall of the screening drum 2, thereby blowing away the blockages in the screening holes 3. In use, the rotating pipe 5 needs to be connected to an external high-pressure air supply system to effectively clear the blockages. It should be noted that the rotation of the rotating pipe 5 gives the rectangular exhaust holes 41 a certain degree of pulse jet function, which can increase the impact force of the gas on the blockages.

[0026] Specifically, one end of the horizontal pipe 4 is fixedly connected to one side inside the screening box 1, and one end of the rotating pipe 5 passes through one side of the screening box 1 and the two are rotatably connected. Specifically, a positioning sleeve is welded to one side of the screening box 1, the rotating pipe 5 passes through the positioning sleeve, and then a sealing ring is fitted inside the positioning sleeve, so that the positioning sleeve and the rotating pipe 5 are in a rotatable sealing state. A grooved positioning plate 11 is fixedly connected to one side of the screening box 1, and a rotating pipe 6 is fixedly connected to one side of the grooved positioning plate 11. One end of the rotating pipe 6 is fitted onto one end of the rotating pipe 5 and the two are rotatably connected. The rotating pipe 6 and the rotating pipe 5 also adopt the common rotating sealing fit structure. In use, the rotating pipe 6 and the air supply pipe are connected through a threaded or flanged structure, which facilitates the introduction of external high-pressure gas into the rotating pipe 5.

[0027] Furthermore, a control motor 7 is fixedly connected to one side of the slotted positioning plate 11, and a drive gear 71 is fixedly connected to the output shaft of the control motor 7. A driven gear 8 that meshes with the drive gear 71 is fixedly sleeved on the outside of the rotating tube 5. The control motor 7 drives the rotating tube 5 to rotate through the meshing of the drive gear 71 and the driven gear 8.

[0028] In this embodiment, the rotating pipe 5 and the horizontal pipe 4 are coaxial, and the outer diameter of the rotating pipe 5 is smaller than the inner diameter of the horizontal pipe 4. This arrangement avoids rotational friction between the rotating pipe 5 and the horizontal pipe 4. A sealing ring 9 is bonded to the inner wall of the horizontal pipe 4, located on the outer periphery of the rectangular exhaust hole 41. One side of the sealing ring 9 abuts against the outer wall of the rotating pipe 5. When the exhaust hole 51 is misaligned with the rectangular exhaust hole 41, the sealing ring 9 seals, and the rectangular exhaust hole 41 cannot exhaust air, thereby realizing the function of pulse jet.

[0029] Furthermore, a conical gas-gathering hood 42 is welded to the bottom of the outer peripheral wall of the horizontal tube 4. A rectangular exhaust hole 41 is located inside the conical gas-gathering hood 42, with the large end of the conical gas-gathering hood 42 facing the top wall of the screening drum 2. This arrangement allows most of the gas ejected from the rectangular exhaust hole 41 to effectively impact a row of screening holes 3 at the top of the screening drum 2, reducing gas pressure loss. In practical applications, a rubber gasket 421 can also be glued to the large end of the conical gas-gathering hood 42, with one side of the rubber gasket 421 adhering to the top wall of the screening drum 2, thereby further reducing gas pressure loss.

[0030] In this embodiment, since the screening box 1 is approximately in a closed structure, the horizontal pipe 4 and rotating pipe 5 provided in this device increase the amount of gas in the screening box 1. In order to ensure that the gas can effectively impact the screening holes 3, an exhaust box 101 communicating with the inner cavity is fixedly connected to the upper end face of the screening box 1. The exhaust box 101 can discharge excess gas in the screening box 1. A filter cotton 102 is provided in the exhaust box 101, which can effectively prevent dust from being discharged.

[0031] It should be noted that the horizontal tube 4 and rotating tube 5 in this technical solution replace the knocking and unblocking structure in the prior art, making unblocking more efficient and reliable. Other structures disclosed in this application can adopt the structures in the patent documents mentioned in the background art.

[0032] Working principle: The screening drum 2 on the main body of the device rotates, and the polyphosphate particles inside it tumble and are then screened through the screening holes 3. During this process, the striking structure on the main body of the device causes the screening drum 2 to vibrate and shake off the deposits on its inner wall. Then, the external air supply solenoid valve is opened, and high-pressure gas enters the rotating pipe 5 through the transfer pipe 6. Then, the control motor 7 is started, and the rotating pipe 5 rotates. When the air outlet 51 and the rectangular exhaust hole 41 coincide, the air outlet 51 will spray out high-pressure gas. The high-pressure gas impacts the screening holes 3 on the top wall of the screening drum 2, thereby blowing away the blockages in the screening holes 3, which can greatly improve the screening efficiency.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rotary drum screening device for polymeric phosphates, comprising a device body, the device body including a screening box (1) and a screening drum (2) located within the screening box (1), wherein the outer peripheral wall of the screening drum (2) is provided with uniformly distributed screening holes (3), characterized in that, The screening drum (2) is provided with a horizontal tube (4) located above the screening drum (2). The horizontal tube (4) is provided with a rotating tube (5). The outer peripheral wall of the rotating tube (5) is provided with axially arranged air outlets (51). The outer peripheral wall of the horizontal tube (4) is provided with a rectangular exhaust hole (41) opposite to the top of the screening drum (2).

2. The rotary drum screening device for polyphosphate according to claim 1, characterized in that: One end of the horizontal tube (4) is fixedly connected to one side inside the screening box (1), one end of the rotating tube (5) passes through one side of the screening box (1) and the two are rotatably connected, a grooved positioning plate (11) is fixedly connected to one side outside the screening box (1), a rotating pipe (6) is fixedly connected to one side of the grooved positioning plate (11), and one end of the rotating pipe (6) is sleeved on one end of the rotating tube (5) and the two are rotatably connected.

3. A rotary drum screening device for polyphosphates according to claim 2, characterized in that: A control motor (7) is fixedly connected to one side of the slotted positioning plate (11), and a drive gear (71) is fixedly connected to the output shaft of the control motor (7). A driven gear (8) that meshes with the drive gear (71) is fixedly sleeved on the outside of the rotating tube (5).

4. A rotary drum screen for polyphosphates according to claim 1, characterized in that: The rotating tube (5) and the horizontal tube (4) are coaxial. The outer diameter of the rotating tube (5) is smaller than the inner diameter of the horizontal tube (4). A sealing ring (9) located on the outer periphery of the rectangular exhaust hole (41) is bonded to the inner wall of the horizontal tube (4). One side of the sealing ring (9) abuts against the outer wall of the rotating tube (5).

5. A rotary drum screen for polyphosphates according to claim 4, characterized in that: A conical gas-gathering hood (42) is welded to the bottom of the outer peripheral wall of the horizontal tube (4). The rectangular exhaust hole (41) is located inside the conical gas-gathering hood (42). The large end of the conical gas-gathering hood (42) is opposite to the top wall of the screening drum (2).

6. A rotary drum screen for polyphosphates according to claim 5, characterized in that: A ring of rubber pads (421) is bonded to the large end of the conical gas-gathering hood (42), and one side of the rubber pads (421) is attached to the top wall of the screening drum (2).

7. A rotary drum screen for polyphosphates according to claim 1, characterized in that: The upper end face of the screening box (1) is fixedly connected to an exhaust box (101) that communicates with the inner cavity, and a filter cotton (102) is provided inside the exhaust box (101).

Images