An exhaust gas treatment device for a sintering equipment of rare earth permanent magnet materials

Abstract

The present invention relates to the technical field of waste gas treatment devices, and particularly to a waste gas treatment device for a rare earth permanent magnet material sintering equipment. It includes: a support frame; a liquid storage tank connected to the support frame, and a round hole is opened in the middle of the bottom of the liquid storage tank; a washing tower connected to the top of the liquid storage tank; a controller installed on the outer wall of the washing tower; a conical plate connected to the inner wall of the liquid storage tank; a connecting pipe connected to the bottom of the conical plate and kept in communication; a hollow frame connected to the bottom of the round hole; a centrifugal pump installed on the tower body of the washing tower. Through the cooperation of the servo motor, the rotating block and the moving component, the present invention can control the two nozzles to alternately extract the washing liquid and spray it to treat the waste gas, while the nozzle that has not carried out the waste gas treatment can automatically extract clean water and automatically clean the inside of the liquid extraction pipe, the liquid outlet pipe, the hose, the elbow pipe and the nozzle. This design can ensure the continuous and efficient operation of the waste gas treatment and reduce the need for manual maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment devices, and in particular to a waste gas treatment device for a rare earth permanent magnet material sintering equipment. Background Art

[0002] With the development of modern industry, rare earth permanent magnet materials, as key raw materials, have been widely used in fields such as electronics, machinery, and automobiles. The manufacturing process of these materials usually includes a sintering step, and waste gas containing various harmful substances is generated during the sintering process. In order to reduce the impact on the environment, it is necessary to effectively treat this waste gas. Currently, the most common method is to use a wet scrubber to purify the waste gas. This treatment method mainly relies on an external circulating water tank connected to a water pump to spray the waste gas, and the purification is achieved by the contact between the washing liquid and the waste gas.

[0003] However, in practical applications, since the waste gas contains a large number of fine particles, these particles will be mixed in the washing liquid after spraying treatment. Over time, these particles will gradually adhere to and accumulate inside the water pipes and nozzles, resulting in a decrease in the operating efficiency of the equipment. Considering using a filter screen to filter out these particles, although it is theoretically feasible, the size of the particles is very small. In order to effectively intercept these impurities, a filter screen with very fine pores must be used. This high-density filter screen will greatly hinder the flow of the washing liquid, reduce the water flow rate, and thus affect the contact efficiency between the waste gas and the washing liquid, ultimately weakening the waste gas treatment effect. Therefore, this method is not suitable for the existing waste gas treatment system. Factories usually can only take the way of regular shutdown maintenance to remove the deposits inside the water pipes and nozzles. This not only increases the operation complexity and labor cost, but also the shutdown time each time is relatively long, which will affect the overall production progress and waste gas treatment efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a waste gas treatment device for a rare earth permanent magnet material sintering equipment, which can overcome the disadvantages that the existing wet scrubber needs regular shutdown maintenance during use, which not only increases the operation complexity and labor cost, but also each shutdown will affect the production progress and waste gas treatment efficiency.

[0005] The technical implementation solution of the present invention is as follows: An exhaust gas treatment device for a sintering equipment of rare earth permanent magnet materials, comprising: a support frame; a liquid storage tank connected to the support frame, and a circular hole is opened in the middle of the bottom of the liquid storage tank; a washing tower connected to the top of the liquid storage tank; a controller installed on the outer wall of the washing tower; a conical plate connected to the inner wall of the liquid storage tank; a connecting pipe connected to the bottom of the conical plate and kept in communication; a hollow frame connected to the bottom of the circular hole; a centrifugal pump installed on the tower body of the washing tower; a liquid extraction pipe with two ends respectively connected to the bottom of the hollow frame and the liquid inlet of the centrifugal pump; a liquid outlet pipe with two ends respectively connected to the tower body of the washing tower and the liquid outlet of the centrifugal pump; a flexible pipe connected to the upper end of the liquid outlet pipe; a bent pipe connected to the end of the flexible pipe; a nozzle installed at the end of the bent pipe; a mounting frame connected to the bottom of the hollow frame; a servo motor installed at the bottom of the mounting frame; a rotating block connected to the output shaft of the servo motor, and a channel communicating with the lower end of the connecting pipe is opened on the rotating block; a liquid changing component arranged on the hollow frame for replacing the liquid in the liquid storage tank; a moving component arranged in the tower body of the washing tower for controlling the movement of the nozzle; a recovery component arranged in the tower body of the washing tower for recovering clear water.

[0006] In a preferred embodiment of the present invention, the liquid changing component includes: a drain pipe connected to the bottom of the hollow frame and kept in communication; an electric control valve installed on the drain pipe; two inlet pipes, both of the two inlet pipes are connected to the liquid storage tank and kept in communication, and the two inlet pipes are respectively located on the upper and lower sides of the conical plate.

[0007] In a preferred embodiment of the present invention, the moving component includes: a connecting block connected to the top of the bent pipe; a connecting frame connected to the inner wall of the tower body of the washing tower; a fixing ring connected to the bottom of the connecting frame, and the fixing ring is sleeved outside the flexible pipe; a first driving motor installed on the top of the connecting frame; a rotating disk connected to the output shaft of the first driving motor, and the rotating disk is located below the connecting frame, and a receiving groove is opened on the rotating disk; an electric push rod installed inside the rotating disk; a moving block connected to the telescopic rod of the electric push rod, and an arc-shaped sliding groove is opened on the moving block, and the connecting block can slide in the arc-shaped sliding groove.

[0008] In a preferred embodiment of the present invention, the recovery component includes: a return pipe with two ends respectively connected to the liquid storage tank and the tower body of the washing tower and kept in communication; a collection frame connected to the upper end of the return pipe and kept in communication, and the collection frame is located inside the tower body of the washing tower.

[0009] In a preferred embodiment of the present invention, it further includes: an L-shaped baffle connected to the nozzle, and a notch is opened on the collection frame, and the L-shaped baffle blocks the notch.

[0010] In a preferred embodiment of the present invention, it further includes: a connecting plate connected to the outer wall of the collection box; a second driving motor installed on the top of the connecting plate; a driving gear connected to the output shaft of the second driving motor; a rotating cylinder brush rotatably connected inside the collection box; a driven gear ring connected to the outer wall of the rotating cylinder brush, and the driven gear ring meshes with the driving gear.

[0011] In a preferred embodiment of the present invention, it further includes: a third driving motor circumferentially and spacedly installed at the bottom of the liquid storage tank; a stirring rod circumferentially and rotatably connected inside the liquid storage tank, and the rotating shaft of the stirring rod is connected to the output shaft of the third driving motor.

[0012] In a preferred embodiment of the present invention, it further includes: a magnet connected inside the moving block, and the magnet can adsorb and fix the connecting block by magnetic force.

[0013] Compared with the prior art, the present invention has the following advantages: 1. Through the cooperation of the servo motor, the rotating block and the moving assembly, the present invention can control the two nozzles to alternately extract the washing liquid and spray it to treat the waste gas, while the nozzle that has not carried out the waste gas treatment can automatically extract clean water and automatically clean the inside of the liquid extraction pipe, the liquid outlet pipe, the hose, the elbow pipe and the nozzle. This design can ensure the continuous and efficient operation of the waste gas treatment and reduce the need for manual maintenance.

[0014] 2. The rotating cylinder brush of the present invention is used in combination with clean water to brush the bottom of the nozzle and its dead corner area. At the same time, the stirring assembly can stir the clean water in the liquid storage tank so that the polishing particles in the clean water can be evenly distributed in the clean water, improving the cleaning effect. At the same time, through the cooperation of the liquid storage tank and the recycling assembly, the recycling of the washing liquid and the clean water can be realized. This closed-loop design can reduce resource consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0016] Figure 2 It is an installation schematic diagram of the conical plate, the connecting pipe and the hollow frame of the present invention.

[0017] Figure 3 It is an installation schematic diagram of the centrifugal pump, the liquid extraction pipe, the liquid outlet pipe, the hose, the elbow pipe and the nozzle of the present invention.

[0018] Figure 4 It is an installation schematic diagram of the mounting rack, the servo motor, the rotating block, the drain pipe and the electric control valve of the present invention.

[0019] Figure 5 It is a cross-sectional view of the rotating block of the present invention.

[0020] Figure 6 It is an installation schematic diagram of the connecting block of the present invention.

[0021] Figure 7 It is a schematic installation diagram of the moving component of the present invention.

[0022] Figure 8 It is a schematic structural diagram of the moving component of the present invention.

[0023] Figure 9 It is a schematic installation diagram of the reflux pipe and the collection box of the present invention.

[0024] Figure 10 It is a cross-sectional view of the collection box of the present invention.

[0025] Figure 11 It is a schematic installation diagram of the L-shaped baffle of the present invention.

[0026] Figure 12 It is a schematic installation diagram of the driving gear, the rotating cylinder brush and the driven gear ring of the present invention.

[0027] Figure 13 It is a schematic installation diagram of the third driving motor and the stirring rod of the present invention.

[0028] Figure 14 It is a schematic installation diagram of the magnet of the present invention.

[0029] Among them, the above-mentioned drawings include the following reference numerals: 1 - support frame, 2 - liquid storage tank, 201 - round hole, 3 - scrubbing tower, 301 - tower body, 302 - intake pipe, 303 - outlet pipe, 304 - packing layer, 305 - vertical pipe, 4 - controller, 5 - conical plate, 6 - connecting pipe, 7 - hollow frame, 8 - centrifugal pump, 9 - liquid suction pipe, 10 - liquid outlet pipe, 11 - hose, 1101 - elbow, 12 - nozzle, 13 - mounting bracket, 14 - servo motor, 15 - rotating block, 1501 - channel, 16 - drain pipe, 17 - electric control valve, 18 - liquid inlet pipe, 19 - connecting block, 20 - connecting frame, 21 - fixing ring, 22 - first driving motor, 23 - rotating disk, 2301 - receiving groove, 24 - electric push rod, 25 - moving block, 2501 - arc-shaped chute, 26 - reflux pipe, 27 - collection box, 28 - notch, 29 - L-shaped baffle, 30 - connecting plate, 31 - second driving motor, 32 - driving gear, 33 - rotating cylinder brush, 34 - driven gear ring, 35 - third driving motor, 36 - stirring rod, 37 - magnet. Detailed implementation manners

[0030] It should be noted first that in the embodiments described differently, the same components are provided with the same reference numerals or the same component names. Among them, the disclosure contained throughout the specification can be transferred meaningfully to the same components with the same reference numerals or the same component names. The positional descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated drawings and are transferred meaningfully to the new positions when the positions change.

[0031] Example: An exhaust gas treatment device for a sintering equipment of rare earth permanent magnet materials, as Figures 1-10 shown, comprising a support frame 1, a liquid storage tank 2, a scrubbing tower 3, a controller 4, a conical plate 5, a connecting pipe 6, a hollow frame 7, a centrifugal pump 8, a liquid extraction pipe 9, a liquid outlet pipe 10, a hose 11, an elbow 1101, a nozzle 12, a mounting frame 13, a servo motor 14, a rotating block 15, a liquid changing assembly, a moving assembly and a recycling assembly. The upper part of the support frame 1 is connected with the liquid storage tank 2, and a round hole 201 is opened in the middle of the bottom of the liquid storage tank 2, as Figure 2As shown, the scrubbing tower 3 includes a tower body 301, an intake pipe 302, an exhaust pipe 303, a packing layer 304, and a vertical pipe 305. The top of the liquid storage tank 2 is connected to the tower body 301. The middle of the lower part of the tower body 301 is connected to the intake pipe 302 and kept in communication. The top of the tower body 301 is connected to the exhaust pipe 303 and kept in communication. The packing layer 304 is arranged in the middle of the tower body 301. The vertical pipes 305 are circumferentially and spacedly connected to the lower part of the tower body 301. The bottom of the vertical pipes 305 is connected to the top of the liquid storage tank 2 and kept in communication. A controller 4 is installed in the middle of the front side of the scrubbing tower 3. The upper part of the inner wall of the liquid storage tank 2 is connected with a conical plate 5. The conical plate 5 can divide the interior of the liquid storage tank 2 into two storage spaces. The washing liquid for treating exhaust gas can be stored above the conical plate 5. The clear water for cleaning the liquid suction pipe 9, the liquid outlet pipe 10, the hose 11, the elbow 1101, and the nozzle 12 can be stored below the conical plate 5. The clear water contains abrasive particles made of metal material, and the diameter of the abrasive particles is 1 millimeter. A connecting pipe 6 is connected to the inner wall of the circular hole 201, and the upper end of the connecting pipe 6 is connected to the bottom of the conical plate 5 and kept in communication. The middle of the bottom of the liquid storage tank 2 is connected with a hollow frame 7. The hollow frame 7 is located directly below the circular hole 201, and the top of the hollow frame 7 is of an open design and kept in communication with the circular hole 201. Centrifugal pumps 8 are installed on the lower right side and the lower rear side of the lower part of the tower body 301. The centrifugal pumps 8 can handle liquids containing a small amount of fine particles (usually less than 5 millimeters). The liquid suction pipes 9 are connected to the liquid inlets of the two centrifugal pumps 8 and kept in communication. The lower ends of the two liquid suction pipes 9 are connected to the bottom of the hollow frame 7 and kept in communication. The liquid outlet pipes 10 are connected to the liquid outlets of the two centrifugal pumps 8 and kept in communication. The upper ends of the two liquid outlet pipes 10 penetrate through the side surface of the tower body 301 and are located above the packing layer 304. The upper ends of the two liquid outlet pipes 10 are connected with hoses 11 and kept in communication. The ends of the two hoses 11 are connected with elbows 1101 and kept in communication. The nozzles 12 are installed at the lower ends of the two elbows 1101. The nozzles 12 are solid conical nozzles, which can spray the washing liquid downward to form a complete cone to cover the upper part of the entire packing layer 304. The bottom of the hollow frame 7 is connected with a mounting frame 13. A servo motor 14 is installed at the bottom of the mounting frame 13. The lower end of the connecting pipe 6 is rotatably connected with a rotating block 15, and the bottom of the rotating block 15 is connected to the output shaft of the servo motor 14. The bottom of the rotating block 15 is in contact with the inner bottom of the hollow frame 7. A channel 1501 is opened on the rotating block 15. The upper end of the channel 1501 is communicated with the lower end of the connecting pipe 6. The lower end of the channel 1501 can be communicated with the ends of the two liquid suction pipes 9 through rotation. The liquid changing assembly is used to replace the liquid in the liquid storage tank 2. The moving assembly is used to control the movement of the nozzle 12. The recycling assembly is used to recycle the clear water.

[0032] As Figure 1 and Figure 4As shown, the liquid changing assembly includes a liquid discharge pipe 16, an electric control valve 17, and a liquid inlet pipe 18. The bottom left side of the hollow frame 7 is connected to the liquid discharge pipe 16 and remains in communication, and an electric control valve 17 is installed on the liquid discharge pipe 16. The front right part and the rear right part of the liquid storage tank 2 are both connected to the liquid inlet pipe 18 and remain in communication, and the two liquid inlet pipes 18 are respectively located on the upper and lower sides of the conical plate 5, so as to be able to replenish liquid to the two storage spaces inside the liquid storage tank 2 respectively.

[0033] As Figures 6-8 shown, the moving assembly includes a connecting block 19, a connecting frame 20, a fixing ring 21, a first driving motor 22, a rotating disk 23, an electric push rod 24, and a moving block 25. The tops of the two elbow pipes 1101 are both connected to the connecting block 19. The upper part of the inner wall of the tower body 301 is connected to the connecting frame 20. The bottom right side and the bottom rear side of the connecting frame 20 are both connected to the fixing ring 21. The fixing rings 21 correspond to the hoses 11 one by one, and the fixing ring 21 is sleeved outside the corresponding hose 11 and is adapted to the elbow pipe 1101. The first driving motor 22 is installed on the top of the connecting frame 20, and the output shaft of the first driving motor 22 is connected to the rotating disk 23, and the rotating disk 23 is located below the connecting frame 20. As Figure 8 shown, an annular groove is formed at the bottom of the rotating disk 23, and a receiving groove 2301 is formed at the right part of the rotating disk 23. An electric push rod 24 is installed inside the rotating disk 23, and the telescopic rod of the electric push rod 24 is connected to the moving block 25. The shape of the moving block 25 is adapted to the shape of the receiving groove 2301, and an arc-shaped sliding groove 2501 is formed on the moving block 25. The connecting block 19 can slide in the arc-shaped sliding groove 2501.

[0034] As Figures 9-11 shown, the recycling assembly includes a return pipe 26, a collection frame 27, and an L-shaped baffle 29. Four return pipes 26 are circumferentially and spacedly connected to the liquid storage tank 2. The lower ends of the return pipes 26 are located below the conical plate 5. A collection frame 27 is connected between the upper ends of the four return pipes 26 and remains in communication. The collection frame 27 is located inside the tower body 301. The shape of the collection frame 27 is annular, and notches 28 are formed at the inner right part and the inner rear part of the collection frame 27. The two notches 28 correspond to the two nozzles 12 one by one. As Figure 10 shown, the height of the notch 28 is higher than the height of the inner bottom of the collection frame 27, and the water in the collection frame 27 will not flow out through the notch 28 into the tower body 301. L-shaped baffles 29 are connected to the outer walls of the two nozzles 12, and the L-shaped baffles 29 are used to block the notches 28.

[0035] Initially, an appropriate amount of washing liquid is stored above the conical plate 5, and an appropriate amount of clean water is stored below the conical plate 5; the rotating block 15 blocks the lower end of the liquid extraction pipe 9 on the right side (as Figure 4As shown, clear water will not enter the liquid extraction pipe 9 on the right side, and the lower end of the channel 1501 in the rotating block 15 communicates with the lower end of the liquid extraction pipe 9 on the right side; the connecting block 19 on the right elbow pipe 1101 is located in the arc-shaped chute 2501, that is, the nozzle 12 on the right side is located at the center of the rotating disk 23 (as Figure 7 and Figure 8 shown); the L-shaped baffle 29 at the rear blocks the notch 28 at the rear (as Figure 10As shown); when it is necessary to treat the waste gas, first, the waste gas is introduced into the tower body 301 through the intake pipe 302. The waste gas will rise in the tower body 301. At the same time, the controller 4 can control the centrifugal pump 8 to start working. The centrifugal pump 8 on the right can extract the washing liquid through the liquid extraction pipe 9 on the right, the rotating block 15 and the connecting pipe 6, and can transport the washing liquid to the nozzle 12 on the right through the liquid outlet pipe 10 on the right, the hose 11 on the right and the elbow 1101 on the right, so that the nozzle 12 on the right sprays the washing liquid downward. The waste gas and the washing liquid will come into full contact in the packing layer 304, so that the particulate matter, harmful gases or volatile organic compounds in the waste gas can be removed by the washing liquid. The purified air will be discharged through the outlet pipe 303, while the washing liquid will flow downward through the vertical pipe 305 into the liquid storage tank 2 (above the conical plate 5), so that the washing liquid can be recycled; at the same time, the centrifugal pump 8 at the rear can extract clean water through the liquid extraction pipe 9 at the rear and the hollow frame 7, and transport the clean water to the nozzle 12 at the rear through the liquid outlet pipe 10 at the rear, the hose 11 at the rear and the elbow 1101 at the rear. The nozzle 12 at the rear can spray the clean water downward. The abrasive particles in the clean water can remove the particulate matter adhering in the liquid outlet pipe 10 at the rear, the hose 11 at the rear, the elbow 1101 at the rear and the nozzle 12 at the rear, achieving the purpose of automatic cleaning. At this time, the L-shaped baffle 29 at the rear blocks the notch 28 at the rear, so the clean water sprayed by the nozzle 12 at the rear will gather in the collection frame 27 and will not splash into the interior of the tower body 301, that is, it will not affect the purification work of the waste gas. The clean water in the collection frame 27 will finally flow downward through the return pipe 26 into the liquid storage tank 2 (below the conical plate 5), so that the clean water can also be recycled;After using for a period of time, it is necessary to stop conveying exhaust gas into the tower body 301, and control the centrifugal pump 8 to stop working through the controller 4, and then control the servo motor 14 through the controller 4 to drive the rotating block 15 to rotate. Since the bottom of the rotating block 15 is in contact with the bottom of the hollow frame 7, during the rotation of the rotating block 15, the washing liquid in the connecting pipe 6 will not flow out through the channel 1501 and mix with the clean water. Then the rotating block 15 will block the lower end of the liquid extraction pipe 9 on the rear side, and the lower end of the channel 1501 in the rotating block 15 is connected to the lower end of the liquid extraction pipe 9 on the rear side, and then the electric push rod 24 is controlled by the controller 4 to drive the moving block 25 to move. The movable block 25 can drive the right connecting block 19 and the right curved pipe 1101 to move to the right, so that the right curved pipe 1101 is inserted into the right fixing ring 21, thereby fixing the right curved pipe 1101, and the right L-shaped baffle 29 will block the notch 28 on the right, and the arc-shaped slide groove 2501 will also match the annular groove at the bottom of the rotating disk 23, and then the controller 4 controls the first driving motor 22 to drive the rotating disk 23 to rotate a specified angle, and the rotating disk 23 can drive the electric push rod 24 and the movable block 25 to rotate a specified angle, so that the right connecting block 19 and the arc-shaped slide groove 2501 are in a state of being aligned with each other. 501 is disengaged, and then the arc-shaped slide groove 2501 is stuck on the connection block 19 at the rear side, and then the controller 4 controls the electric push rod 24 to drive the moving block 25 to move forward and disengage from the storage groove 2301. The moving block 25 can drive the connection block 19 at the rear side and the curved pipe 1101 at the rear side to move forward, so that the curved pipe 1101 at the rear side is separated from the fixed ring 21 at the rear side. At this time, the nozzle 12 at the rear side is located at the center position of the rotating disk 23, and then the above operation is repeated, and the washing liquid can be sprayed out through the nozzle 12 at the rear side to purify the exhaust gas, and the clean water can be used to clean the right liquid outlet pipe 10, the right hose 11, and the right curved pipe. The pipe 1101 and the nozzle 12 on the right are cleaned, so that the two nozzles 12 can work alternately, which can not only ensure the treatment effect and efficiency of the exhaust gas, but also achieve the purpose of automatic cleaning; when the washing liquid and clean water need to be replaced, the controller 4 first controls the electric control valve 17 to open, so that the clean water can be discharged out through the drain pipe 16, and then the controller 4 controls the rotating block 15 to rotate until the lower end of the channel 1501 is connected with the upper end of the drain pipe 16, so that the washing liquid can be discharged out through the drain pipe 16, and then the electric control valve 17 is closed, and finally the washing liquid and clean water are added to the liquid storage tank 2 through the liquid inlet pipe 18. ;

[0036] Since particles are easily accumulated at the bottom of the nozzle 12 and the lower edge around it, and are in the dead corner area of ​​the nozzle 12, the clean water sprayed by the nozzle 12 cannot clean properly, so a brush component is designed, such as Figure 12As shown in the figure, the brushing component includes a connecting plate 30, a second driving motor 31, a driving gear 32, a rotating barrel brush 33 and a driven gear ring 34. The upper left side of the outer wall of the collection box 27 is connected with a connecting plate 30. The top of the connecting plate 30 is provided with a second driving motor 31. The output shaft of the second driving motor 31 is connected with a driving gear 32. The rotating barrel brush 33 is rotatably connected inside the collection box 27. The upper part of the outer wall of the rotating barrel brush 33 is connected with a driven gear ring 34. An opening (not shown in the figure) is provided in the upper left side of the outer wall of the collection box 27. The driving gear 32 can pass through the above opening and mesh with the driven gear ring 34. During the cleaning process of the liquid outlet pipe 10, the hose 11, the elbow pipe 1101 and the nozzle 12, the controller 4 can be used to control the second driving motor 31 to drive the driving gear 32 to rotate. The driving gear 32 can drive the rotating barrel brush 33 to rotate through the driven gear ring 34. The rotating barrel brush 33 can brush and clean the lower part of the nozzle 12. Cooperating with clean water, it can remove the particles adhering to the bottom of the nozzle 12 and the lower edge around it, improving the cleaning effect.

[0037] Since the polishing particles in the clean water will sink to the bottom when standing still, resulting in a reduction in the cleaning effect, a stirring component is designed, as Figure 13 shown. The stirring component includes a third driving motor 35 and a stirring rod 36. Four third driving motors 35 are circumferentially and spacedly installed at the bottom of the liquid storage tank 2. Four stirring rods 36 are circumferentially and rotatably connected inside the liquid storage tank 2. The stirring rods 36 correspond to the third driving motors 35 one by one. The rotating shaft of the stirring rod 36 rotates through the bottom of the liquid storage tank 2 and is connected to the output shaft of its corresponding third driving motor 35. The stirring rods 36 are located below the conical plate 5 and will not affect the cleaning liquid above the conical plate 5. When it is necessary to clean the liquid outlet pipe 10, the hose 11, the elbow pipe 1101 and the nozzle 12, first, the controller 4 is used to control the third driving motor 35 to drive the stirring rod 36 to rotate. The stirring rod 36 can stir the clean water in the liquid storage tank 2 so that the polishing particles in the clean water can be evenly distributed in the clean water, thus improving the cleaning effect. After the cleaning is completed, the controller 4 is used to control the third driving motor 35 to stop working, so that the stirring rod 36 stops rotating. At this time, the polishing particles in the clean water will gradually sink to the bottom, and the centrifugal pump 8 continues to work, and can send the clean water into the liquid outlet pipe 10, the hose 11, the elbow pipe 1101 and the nozzle 12 for secondary cleaning, so as to prevent the polishing particles in the clean water from remaining in the liquid outlet pipe 10, the hose 11, the elbow pipe 1101 and the nozzle 12.

[0038] When the moving block 25 drives the connecting block 19 to move, since the hose 11 will bend, the connecting block 19 may slide in the arc-shaped chute 2501, resulting in the elbow pipe 1101 being difficult to align with the fixing ring 21 for insertion. Therefore, a magnet 37 is designed, as Figure 14As shown, a magnet 37 is internally connected to the moving block 25, and the magnet 37 can adsorb and fix the connecting block 19 through magnetic force. Thus, during the process of the moving block 25 driving the connecting block 19 to move, the connecting block 19 can be prevented from sliding in the arc-shaped chute 2501, ensuring that the bent pipe 1101 can be accurately inserted into the fixing ring 21 for fixation.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. An exhaust gas treatment device for a rare earth permanent magnet material sintering device, comprising: a support frame (1); a liquid storage tank (2), connected to the support frame (1), and having a circular hole (201) in the middle of the bottom of the liquid storage tank (2); a washing tower (3), connected to the top of the liquid storage tank (2); wherein: The washing tower (3) also includes: a controller (4) mounted on the outer wall of the washing tower (3); a conical plate (5) connected to the inner wall of the liquid storage tank (2); a connecting pipe (6) connected to the bottom of the conical plate (5) and maintained in communication; a hollow frame (7) connected to the bottom of the circular hole (201); a centrifugal pump (8) mounted on the tower body (301) of the washing tower (3); a liquid extraction pipe (9) having two ends respectively connected to the bottom of the hollow frame (7) and the liquid inlet of the centrifugal pump (8); a liquid outlet pipe (10) having two ends respectively connected to the tower body (301) of the washing tower (3) and the liquid outlet of the centrifugal pump (8); a hose (11) connected to the upper end of the liquid outlet pipe (10); and a curved pipe (1101). ), connected to the end of the hose (11); the nozzle (12), installed at the end of the curved pipe (1101); the mounting frame (13), connected to the bottom of the hollow frame (7); the servo motor (14), installed at the bottom of the mounting frame (13); the rotating block (15), connected to the output shaft of the servo motor (14), and the rotating block (15) is provided with a channel (1501) connected to the lower end of the connecting pipe (6); a liquid replacement component, arranged on the hollow frame (7), for replacing the liquid in the liquid storage tank (2); a moving component, arranged in the tower body (301) of the washing tower (3), for controlling the movement of the nozzle (12); a recovery component, arranged The washing tower (3) is provided with a housing (301) of the washing tower (3) for recycling clean water; the liquid replacement component comprises: a liquid discharge pipe (16) connected to the bottom of the hollow frame (7) and maintained in communication; an electric control valve (17) installed on the liquid discharge pipe (16); two liquid inlet pipes (18) are provided, the two liquid inlet pipes (18) are connected to the liquid storage tank (2) and maintained in communication, and the two liquid inlet pipes (18) are respectively located on the upper and lower sides of the conical plate (5); the moving component comprises: a connecting block (19) connected to the top of the curved pipe (1101); a connecting frame (20) connected to the inner wall of the housing (301) of the washing tower (3); a fixing ring (21) connected to the inner wall of the housing (301) of the washing tower (3); and a fixing ring (21) connected to the inner wall of the housing (301) of the washing tower (3). The connecting frame (20) is connected to the bottom of the connecting frame (20), and the fixing ring (21) is sleeved on the outside of the hose (11); the first driving motor (22) is installed on the top of the connecting frame (20); the rotating disk (23) is connected to the output shaft of the first driving motor (22), and the rotating disk (23) is located below the connecting frame (20), and the rotating disk (23) is provided with a receiving groove (2301); the electric push rod (24) is installed inside the rotating disk (23); the moving block (25) is connected to the telescopic rod of the electric push rod (24), and the moving block (25) is provided with an arc-shaped sliding groove (2501), and the connecting block (19) can slide in the arc-shaped sliding groove (2501).

2. The exhaust gas treatment device for rare earth permanent magnet material sintering equipment according to claim 1, characterized in that: The recovery component comprises: a reflux pipe (26), the two ends of which are respectively connected to a liquid storage tank (2) and a tower body (301) of a washing tower (3) and are kept in communication; and a collection frame (27), which is connected to the upper end of the reflux pipe (26) and is kept in communication, and the collection frame (27) is located inside the tower body (301) of the washing tower (3).

3. The exhaust gas treatment device for rare earth permanent magnet material sintering equipment according to claim 2, characterized in that: It also includes: an L-shaped baffle (29) connected to the nozzle (12), and a notch (28) is formed on the collecting frame (27), and the L-shaped baffle (29) blocks the notch (28).

4. The exhaust gas treatment device for rare earth permanent magnet material sintering equipment according to claim 3 is characterized in that: The invention also comprises: a connecting plate (30) connected to the outer wall of the collecting frame (27); a second driving motor (31) mounted on the top of the connecting plate (30); a driving gear (32) connected to the output shaft of the second driving motor (31); a rotating cylinder brush (33) rotatably connected to the inside of the collecting frame (27); and a driven gear ring (34) connected to the outer wall of the rotating cylinder brush (33), wherein the driven gear ring (34) is meshed with the driving gear (32).

5. The exhaust gas treatment device for rare earth permanent magnet material sintering equipment according to claim 4, characterized in that: The invention also comprises: a third drive motor (35) which is installed at intervals in the circumferential direction at the bottom of the liquid storage tank (2); and a stirring rod (36) which is rotatably connected to the inside of the liquid storage tank (2) at intervals in the circumferential direction, and the rotating shaft of the stirring rod (36) is connected to the output shaft of the third drive motor (35).

6. The exhaust gas treatment device for rare earth permanent magnet material sintering equipment according to claim 5, characterized in that: It also includes a magnet (37) connected to the inside of the moving block (25), and the magnet (37) can absorb and fix the connecting block (19) through magnetic force.

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