Material cleaning device and ultrasonic vibrating screen
By introducing a negative pressure mechanism and a turbulence hood into the ultrasonic vibrating screen, the movement of materials is disturbed and large particles are cleaned by negative pressure suction, which solves the problems of reduced screen sieving efficiency and time-consuming and labor-intensive cleaning, and achieves efficient and convenient screen cleaning and material separation.
Patent Information
- Application Number
- CN202423237825.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-26
AI Technical Summary
After a period of use, the screening efficiency of existing ultrasonic vibrating screens decreases, cleaning is time-consuming and laborious, and there is a risk of foreign objects accidentally entering the screen cavity.
The material cleaning device combines a negative pressure mechanism and a baffle hood. The baffle hood disrupts the movement of materials and the negative pressure suction port directly cleans large particles and impurities, avoiding the need for manual disassembly of the screen.
It improves the screening efficiency of the screen, enables efficient and convenient cleaning, and reduces manual operation time and the risk of foreign objects entering the screen.
Smart Images
Figure CN223862251U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of positive electrode material processing equipment, in particular to a material cleaning device and ultrasonic vibration screen. BACKGROUND
[0002] The positive electrode material of the lithium ion battery is usually subjected to ultrasonic vibration screening when passing through the screening process, which mainly works as follows: under the joint action of the vibration motor and the ultrasonic transducer, the material makes high-frequency or low-frequency rotary vibration movement on the screen mesh, so as to screen out the granular material and impurities larger than the screen mesh, and the granular material smaller than the screen mesh enters the next process.
[0003] However, after the existing ultrasonic vibration screen is used for a period of time, under the action of the centrifugal force generated by the high-frequency or low-frequency rotary vibration movement, firstly, the material will gradually accumulate to the edge of the circular screen mesh, so that the available screening area of the screen mesh gradually decreases, thereby reducing the screening efficiency of the screen mesh; secondly, when the large granular material and impurities on the screen mesh are cleaned regularly, the screen mesh usually needs to be manually disassembled by artificial, which will cause the manual disassembly process to be time-consuming and laborious, and will also increase the risk of foreign matter entering the screen cavity. UTILITY MODEL CONTENTS
[0004] The utility model aims at overcoming the defects in the prior art, and provides a material cleaning device and ultrasonic vibration screen which can effectively improve the screening efficiency of the screen mesh, and can realize efficient and convenient cleaning work without manual disassembly of the screen mesh.
[0005] The utility model aims at overcoming the defects in the prior art, and provides a material cleaning device and ultrasonic vibration screen which can effectively improve the screening efficiency of the screen mesh, and can realize efficient and convenient cleaning work without manual disassembly of the screen mesh.
[0006] A material cleaning device comprises:
[0007] A negative pressure mechanism comprises a negative pressure pipe; one end of the negative pressure pipe is connected to a negative pressure collection system;
[0008] A cleaning mechanism comprises a fairing body; the fairing body is located in a fine screening cavity of an ultrasonic vibration screen; the fairing body is provided with a suction port and a collection cavity which are connected in sequence; the negative pressure pipe penetrates a mounting hole of the ultrasonic vibration screen which is connected to the fine screening cavity; the other end of the negative pressure pipe is connected to the collection cavity; the suction port is arranged towards the screen mesh surface of the ultrasonic vibration screen, and the suction port is provided with a preset distance from the screen mesh surface.
[0009] In one embodiment, a turbulence surface is formed on the fairing body, and the turbulence surface is arranged towards the incoming material direction of the rotary vibration movement of the material in the fine screening cavity.
[0010] In one of the embodiments, the cleaning mechanism further comprises a rotating opening and closing member, which is located in the collecting cavity and is rotationally connected with the fairing body.
[0011] When the negative pressure collecting system is started, the rotating opening and closing member rotates in a positive direction relative to the fairing body to a preset angle, the rotating opening and closing member is in an open state, and the suction port is in communication with the collecting cavity; when the negative pressure collecting system is turned off, the rotating opening and closing member rotates in a reverse direction relative to the fairing body to reset, the rotating opening and closing member is in a closed state, and the suction port is cut off from the collecting cavity.
[0012] In one of the embodiments, the rotating opening and closing member comprises a rotating shaft and a rotating flap; the rotating shaft is located at a position where the collecting cavity is communicated with the suction port, both ends of the rotating shaft are rotationally connected with the fairing body, and one end of the rotating flap is fixedly connected with the rotating shaft.
[0013] When the negative pressure collecting system is started, the rotating shaft rotates in a positive direction to a preset angle, the rotating flap is in an open state, and the suction port is in communication with the collecting cavity; when the negative pressure collecting system is turned off, the rotating shaft rotates in a reverse direction relative to the fairing body to reset, and the suction port is cut off from the collecting cavity.
[0014] In one of the embodiments, one end of the rotating flap is formed with a mounting ring, and the mounting ring is sleeved on the rotating shaft.
[0015] In one of the embodiments, the material cleaning device further comprises a rotating bearing member, an inner ring of the rotating bearing member is sleeved on an end of the rotating shaft, and an outer ring of the rotating bearing member is fixedly installed on the fairing body.
[0016] In one of the embodiments, the rotating opening and closing member further comprises a sealing gasket, which is arranged around the other end of the rotating flap.
[0017] In one of the embodiments, the preset distance ranges from 1 mm to 2 mm.
[0018] In one of the embodiments, one end of the negative pressure pipe is detachably connected with the negative pressure collecting system.
[0019] An ultrasonic vibrating screen comprises a vibrating screen base, a screening mechanism and the material cleaning device according to any one of the above embodiments, the screening mechanism is fixedly installed on the vibrating screen base, the screening mechanism is provided with a coarse screening cavity, a fine screening cavity and a material flow collecting cavity which are sequentially communicated, the screening mechanism is further provided with a mounting hole which is communicated with the fine screening cavity, and the fairing body is installed in the fine screening cavity.
[0020] Compared with the prior art, the utility model has at least the following advantages:
[0021] 1、Since the fairing body is located in the fine screening cavity of the ultrasonic vibration screen, the material in rotation can be effectively disturbed by the fairing body, the material is scattered and the movement track of the material after passing through the fairing body is prolonged, and the screening efficiency is effectively improved.
[0022] 2、Start the negative pressure collection system, and then the large particle material and impurities on the screen surface of the ultrasonic vibration screen can be directly sucked and cleaned by the suction port under negative pressure, so that the large particle material and impurities are sequentially sucked into the suction port, the collecting cavity and the negative pressure pipe, and finally reach the negative pressure collection system, so that manual disassembly of the screen for cleaning is not needed, the screen cleaning work is more efficient, convenient, time-saving and labor-saving, and foreign matters are avoided from entering the fine screening cavity. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as limiting the scope, and for the ordinary skilled in the art, other related drawings can be obtained without creative labor on the premise of the drawings.
[0024] Figure 1 It is a structure schematic view of the material cleaning device in an embodiment.
[0025] Figure 2 It is a structure schematic view of the material cleaning device in an embodiment. Figure 1 It is a structure schematic view of the material cleaning device in an embodiment.
[0026] Figure 3 It is a structure schematic view of the material cleaning device in an embodiment. Figure 1 It is a structure sectional view of the material cleaning device in an embodiment.
[0027] Figure 4 It is a structure sectional view of the material cleaning device in an embodiment. Figure 3 It is a structure sectional view of the material cleaning device in an embodiment.
[0028] Figure 5 It is a structure sectional view of the material cleaning device in an embodiment. Figure 1 It is a structure sectional view of the material cleaning device in an embodiment.
[0029] Figure 6 It is a structure sectional view of the material cleaning device in an embodiment.
[0030] Figure 7 It is a structure sectional view of the material cleaning device in an embodiment. Figure 6 It is a structure sectional view of the material cleaning device in an embodiment.
[0031] Reference numerals: Material cleaning device 10; Negative pressure mechanism 100; Negative pressure pipe fitting 110; Cleaning mechanism 200; Baffle hood 210; Suction port 2101; Collection chamber 2102; Baffle surface 2110; Rotating opening and closing part 220; Rotating shaft 2210; Rotating flap 2222; Mounting ring 2222; Sealing gasket 2230; Vibrating screen base 300; Screening mechanism 400; Coarse screen chamber 401; Fine screen chamber 402; Material collection chamber 403; Mounting hole 404. Detailed Implementation
[0032] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0033] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0035] Please see Figures 1 to 5 To better understand the material cleaning device 10 of this application, the following further explanation of the material cleaning device 10 is provided:
[0036] The material cleaning device 10 of one embodiment comprises a negative pressure mechanism 100 and a cleaning mechanism 200. The negative pressure mechanism 100 comprises a negative pressure pipe 110; the cleaning mechanism 200 comprises a spoiler body 210; the spoiler body 210 is located in a fine screening cavity 402 of an ultrasonic vibrating screen, the spoiler body 210 is provided with a suction port 2101 and a collection cavity 2102 which are sequentially connected; the negative pressure pipe 110 penetrates through a mounting hole 404 of the ultrasonic vibrating screen which is connected with the fine screening cavity 402, the other end of the negative pressure pipe 110 is connected with the collection cavity 2102, the suction port 2101 is arranged towards a screen surface of the ultrasonic vibrating screen, and the suction port 2101 is provided with a preset distance from the screen surface.
[0037] In the embodiment, since the spoiler body 210 is located in the fine screening cavity 402 of the ultrasonic vibrating screen, the material in rotation can be effectively disturbed by the spoiler body 210, so that the material is scattered and the movement track of the material after passing through the spoiler body 210 is prolonged, thereby effectively improving the screening efficiency.
[0038] Further, the negative pressure collection system is started, and then the negative pressure suction and cleaning work of the large particle material and impurities on the screen surface of the ultrasonic vibrating screen can be directly performed through the suction port 2101, so that the large particle material and impurities are sequentially sucked into the suction port 2101, the collection cavity 2102 and the negative pressure pipe 110, and finally reach the negative pressure collection system, thereby avoiding manual disassembly of the screen for cleaning, and the screen cleaning work is more efficient, convenient, time-saving and labor-saving, and foreign matters are also avoided from entering the fine screening cavity 402.
[0039] As shown in Figure 1 , Figure 3 and Figure 6 , in one of the embodiments, the spoiler body 210 is formed with a spoiler surface 2110, and the spoiler surface 2110 is arranged towards the direction of incoming material which is in rotational vibration in the fine screening cavity 402. In this way, the material in rotation in the fine screening cavity 402 can be scooped up by the spoiler surface 2110 to effectively disturb the material in rotation, thereby prolonging the movement track of the material after passing through the spoiler surface 2110, and effectively improving the screening efficiency.
[0040] It should be noted that, as shown in Figure 6 , the C arrow represents the path of the material in rotational vibration in the fine screening cavity 402, i.e. the path of the circumferential motion of the material around the center of the circular fine screening cavity 402.
[0041] It needs to be explained that, in the embodiment, the negative pressure pipe 110 penetrates through the mounting hole 404 of the ultrasonic vibrating screen which is communicated with the fine screening cavity 402, and the other end of the negative pressure pipe 110 is communicated with the collection cavity 2102, that is, the other end of the negative pressure pipe 110 is fixedly connected with the fairing body 210, so that the suction port 2101 exists a preset distance from the screen surface, and the fairing body 210 is suspended in the fine screening cavity 402. Specifically, the outer wall of the negative pressure pipe 110 is welded and fixed with the mounting hole 404, and the other end of the negative pressure pipe 110 is welded and fixed with the fairing body 210.
[0042] As Figure 1 , Figure 2 , Figure 3 and Figure 5 indicate that, in one of the embodiments, the cleaning mechanism 200 further comprises a rotating opening and closing member 220, which is located in the collection cavity 2102 and is rotationally connected with the fairing body 210; when the negative pressure collection system is started, the rotating opening and closing member 220 rotates in the positive direction relative to the fairing body 210 to a preset angle, the rotating opening and closing member 220 is in the open state, so that the suction port 2101 is communicated with the collection cavity 2102; when the negative pressure collection system is closed, the rotating opening and closing member 220 rotates in the reverse direction relative to the fairing body 210 to reset, the rotating opening and closing member 220 is in the closed state, so that the suction port 2101 is cut off from the collection cavity 2102.
[0043] It can be understood that the opening and closing of the suction port 2101 and the collection cavity 2102 can be controlled by the rotating opening and closing member 220, that is, when the negative pressure collection system is started, the collection cavity 2102 and the fine screening cavity 402 will form a pressure difference, specifically, the air pressure in the fine screening cavity 402 is greater than that in the collection cavity 2102, so that the airflow in the fine screening cavity 402 passes through the suction port 2101 and drives the rotating opening and closing member 220 to rotate and open, thereby eliminating the need to design a device for driving the rotating opening and closing member 220 to rotate and open for the rotating opening and closing member 220, so that the structure of the cleaning mechanism 200 is simple and practical; on the contrary, when the negative pressure collection system is closed, the pressure of the collection cavity 2102 and the fine screening cavity 402 is balanced, at this time, the rotating opening and closing member 220 will automatically rotate and reset in the reverse direction relative to the fairing body 210 due to the action of gravity, so as to effectively cut off the suction port 2101 and the collection cavity 2102, thereby preventing the material from entering the collection cavity 2102.
[0044] As Figures 2 to 5As shown in the drawings, in one of the embodiments, the rotating opening and closing member 220 comprises a rotating shaft 2210 and a rotating flap 2220; the rotating shaft 2210 is located at the position where the collecting cavity 2102 is communicated with the suction port 2101, both ends of the rotating shaft 2210 are rotationally connected to the fairing body 210, and one end of the rotating flap 2220 is fixedly connected to the rotating shaft 2210; when the negative pressure collecting system is started, the rotating shaft 2210 rotates in the positive direction to a preset angle, the rotating flap 2220 is in the open state, and the suction port 2101 is communicated with the collecting cavity 2102; when the negative pressure collecting system is closed, the rotating shaft 2210 rotates in the reverse direction relative to the fairing body 210 to reset, and the suction port 2101 is disconnected with the collecting cavity 2102. In one of the embodiments, one end of the rotating flap 2220 is formed with a mounting ring 2222, the mounting ring 2222 is sleeved on the rotating shaft 2210, and the shape of the rotating flap 2220 matches the shape of the suction port 2101.
[0045] It can be understood that, by sleeving the mounting ring 2222 on the rotating shaft 2210, the convenience of mounting the rotating flap 2220 on the rotating shaft 2210 is improved; at the same time, since the shape of the rotating flap 2220 matches the shape of the suction port 2101, the other end of the rotating flap 2220 is ensured to rotate around the rotating shaft 2210 to seal the suction port 2101.
[0046] In order to ensure the reliability of the rotating reset of the rotating opening and closing member 220, in other embodiments, the rotating opening and closing member 220 is also connected to the fairing body 210 through a torsional spring, so that under the elastic reset force of the torsional spring, the rotating opening and closing member 220 can be better driven to rotate and reset. Specifically, the torsional spring is sleeved on the rotating shaft 2210, and both ends of the torsional spring are connected to the rotating shaft 2210 and the fairing body 210, respectively. Thus, when the rotating shaft 2210 rotates in the positive direction to a preset angle, the torsional spring is stressed and elastically deformed; when the rotating shaft 2210 rotates in the reverse direction relative to the fairing body 210 to reset, the elastic reset force of the torsional spring helps the rotating shaft 2210 to rotate in the reverse direction, so as to improve the speed of the reverse rotation of the rotating shaft 2210, thereby ensuring the reliability of the rotating closing of the rotating flap 2220.
[0047] As shown in the drawings, Figure 2 and Figure 4 In one of the embodiments, the material cleaning device 10 further comprises a rotating bearing member (not shown in the drawings), the inner ring of the rotating bearing member is sleeved on the end of the rotating shaft 2210, and the outer ring of the rotating bearing member is fixedly installed on the fairing body 210. Thus, the smoothness of the rotation of the other end of the rotating flap 2220 around the rotating shaft 2210 can be effectively ensured.
[0048] As shown in the drawings, Figures 3 to 5As shown, in one of the embodiments, the rotary opening and closing member 220 further comprises a sealing gasket 2230 which is arranged along the periphery of the other end of the rotary flap 2220. In this way, the sealing performance of the other end of the rotary flap 2220 when covering the suction port 2101 can be further improved. Specifically, in this embodiment, the sealing gasket is a flexible gasket. When the other end of the rotary flap 2220 covers the suction port 2101, the flexible gasket 2230 on the periphery of the other end of the rotary flap 2220 will form a soft contact with the inner wall of the collection cavity 2102, which has better sealing performance than the direct hard contact between the periphery of the other end of the rotary flap 2220 and the inner wall of the collection cavity 2102, thereby effectively preventing the material from entering the collection cavity 2102.
[0049] It should be noted that in this embodiment, the number of rotary opening and closing members 220 is multiple, and the multiple rotary opening and closing members 220 are linearly distributed in the collection cavity 2102, and the two adjacent rotary opening and closing members 220 abut each other when the rotary opening and closing member 220 is in the closed state. Specifically, the number of rotary shafts 2210, rotary flaps 2220 and sealing gaskets 2230 is multiple, the multiple rotary flaps 2220 are one-to-one corresponding to the multiple rotary shafts 2210, the multiple sealing gaskets 2230 are one-to-one corresponding to the multiple rotary flaps 2220, and the multiple rotary flaps 2220 and the multiple rotary shafts 2210 are linearly distributed in the collection cavity 2102, and the sealing gasket 2230 on the periphery of the other end of the previous rotary flap 2220 abuts against the back surface of the next rotary flap 2220 along the first direction. In this way, the rotation radius of the rotary flap 2220 can be shortened, and the area of the suction port 2101 can be enlarged, so as to effectively improve the cleaning efficiency of the material cleaning device 10, and make the structure of the fairing body 210 more compact. Moreover, the sealing gasket 2230 abuts against the back surface of the rotary flap 2220, so that the sealing performance between the multiple rotary opening and closing members 220 is better.
[0050] It should be noted that, as Figure 5 shown, the first direction is the direction of the X arrow.
[0051] As shown in Figure 7 one of the embodiments, the range of the predetermined distance is 1mm-2mm.
[0052] As shown in Figure 6As shown, in one embodiment, one end of the negative pressure pipe 110 is detachably connected with the negative pressure collection system. In this way, the negative pressure pipe 110 is convenient to disassemble; in one embodiment, one end of the negative pressure pipe 110 is connected with the negative pressure collection system through a clamp. Effectively ensure the stability of the connection between one end of the negative pressure pipe 110 and the negative pressure collection system, while facilitating the disassembly of the negative pressure pipe 110. Specifically, the end of one end of the negative pressure pipe 110 is butted with the mounting end of the negative pressure connection pipe of the negative pressure collection system, and then the clamp is sleeved on the butt joint and locked to fixedly connect the end of one end of the negative pressure pipe 110 with the mounting end of the negative pressure connection pipe of the negative pressure collection system. In this way, the stability of the negative pressure pipe 110 and the negative pressure connection pipe of the negative pressure collection system is ensured.
[0053] Please refer to Figures 1 to 7 The application also provides an ultrasonic vibrating screen, which comprises a vibrating screen base 300, a screening mechanism 400, and the material cleaning device 10 of any of the above embodiments, the screening mechanism 400 is fixedly installed on the vibrating screen base 300, the screening mechanism 400 is provided with a coarse screening cavity 401, a fine screening cavity 402 and a material flow collection cavity 403 which are sequentially communicated, the screening mechanism 400 is also provided with a mounting hole 404 which is in communication with the fine screening cavity 402, and the flow spoiler body 210 is installed in the fine screening cavity 402.
[0054] In the embodiment, since the flow spoiler body 210 is located in the fine screening cavity 402 of the ultrasonic vibrating screen, the material in rotation can be effectively disturbed by the flow spoiler body 210, so that the material is scattered and the movement track of the material after passing through the flow spoiler body 210 is prolonged, thereby effectively improving the screening efficiency.
[0055] Further, the negative pressure collection system is started, and then the large-particle material and impurities on the screen surface of the ultrasonic vibrating screen can be directly sucked and cleaned by the suction port 2101, so that the large-particle material and impurities are sequentially sucked into the suction port 2101, the collection cavity 2102 and the negative pressure pipe 110, and finally reach the negative pressure collection system, thereby avoiding manual disassembly of the screen for cleaning, and making the screen cleaning work more efficient, convenient, time-saving and labor-saving, and avoiding the entry of foreign matters into the fine screening cavity 402.
[0056] It should be noted that in the embodiment, the bottom of the coarse screening cavity 401 and the fine screening cavity 402 is provided with a screen, so that the material to be screened enters the coarse screening cavity 401 from the feeding port of the screening mechanism 400 for primary screening, enters the fine screening cavity 402 for secondary screening, and finally is collected through the material flow collection cavity 403 and discharged through the discharge port.
[0057] It should be noted that the ultrasonic transducers installed outside the vibrating screen base 300 and the screening mechanism 400 are prior art, which will not be described in detail here.
[0058] The working principle of the material cleaning device 10 and the ultrasonic vibrating screen is as follows: firstly, the external feeding device stops feeding the coarse screen cavity 401, the ultrasonic vibrating screen is switched to a low-power working state, the material and impurities in the fine screen cavity 402 continue to make rotary vibration movement, and the process lasts for 3-5 minutes; then, the negative pressure collecting system is started, the negative pressure suction pressure is kept between 0.2-0.4 Mpa, and the process lasts for 3-5 minutes, the large-particle material and impurities on the screen surface in the fine screen cavity 402 are cleaned by negative pressure suction through the suction port 2101; finally, the negative pressure collecting system is stopped, the negative pressure suction cleaning work is completed, the turning plate 2220 is turned back to the original position, the external feeding device is started, and the next round of feeding and material screening work is carried out on the coarse screen cavity 401 through the feeding port of the screening mechanism 400.
[0059] Compared with the prior art, the utility model includes but is not limited to the following advantages:
[0060] 1, since the fairing body 210 is located in the fine screen cavity 402 of the ultrasonic vibrating screen, the material in rotation can be effectively disturbed through the fairing body 210, the material is scattered, and the movement track of the material after passing through the fairing body 210 is prolonged, and the screening efficiency is effectively improved.
[0061] 2, the negative pressure collecting system is started, and then the large-particle material and impurities on the screen surface of the ultrasonic vibrating screen are directly cleaned by negative pressure suction through the suction port 2101, so that the large-particle material and impurities are sequentially sucked into the suction port 2101, the collecting cavity 2102 and the negative pressure pipe 110, and finally reach the negative pressure collecting system, so that manual disassembly of the screen for cleaning is not needed, the screen cleaning work is more efficient, convenient, time-saving and labor-saving, and foreign matters are prevented from entering the fine screen cavity 402.
[0062] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the utility model, a plurality of deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.
Claims
1. A material cleaning device (10), characterized in that, include: The negative pressure mechanism (100) includes a negative pressure fitting (110); one end of the negative pressure fitting (110) is connected to a negative pressure collection system; The cleaning mechanism (200) includes a baffle hood (210); the baffle hood (210) is located inside the fine screening chamber (402) of the ultrasonic vibrating screen, and the baffle hood (210) has a suction port (2101) and a collection chamber (2102) connected in sequence; the negative pressure pipe (110) passes through the mounting hole (404) of the ultrasonic vibrating screen connected to the fine screening chamber (402), and the other end of the negative pressure pipe (110) is connected to the collection chamber (2102). The suction port (2101) is arranged facing the screen surface of the ultrasonic vibrating screen, and there is a preset distance between the suction port (2101) and the screen surface; The cleaning mechanism (200) further includes a rotating opening and closing component (220), which is located inside the collection cavity (2102) and is rotatably connected to the spoiler cover (210). When the negative pressure collection system is started, the rotating opening and closing component (220) rotates in the positive direction relative to the shroud (210) to a preset angle, and the rotating opening and closing component (220) is in the open state, so that the suction port (2101) is connected to the collection chamber (2102); when the negative pressure collection system is turned off, the rotating opening and closing component (220) rotates in the opposite direction relative to the shroud (210) to reset, and the rotating opening and closing component (220) is in the closed state, so that the suction port (2101) is isolated from the collection chamber (2102).
2. The material cleaning device (10) according to claim 1, characterized in that, A turbulence surface (2110) is formed on the turbulence hood (210), and the turbulence surface (2110) is set toward the material in the fine screening chamber (402) where the material is rotating and vibrating.
3. The material cleaning device (10) according to claim 1, characterized in that, The rotating opening and closing component (220) includes a rotating shaft (2210) and a rotating flap (2220); the rotating shaft (2210) is located at the part of the collecting cavity (2102) that communicates with the suction port (2101), both ends of the rotating shaft (2210) are rotatably connected to the spoiler cover (210), and one end of the rotating flap (2220) is fixedly connected to the rotating shaft (2210). When the negative pressure collection system is started, the rotating shaft (2210) rotates in the positive direction to a preset angle, and the rotating flap (2220) is in the open state, so that the suction port (2101) is connected to the collection chamber (2102); when the negative pressure collection system is turned off, the rotating shaft (2210) rotates in the opposite direction relative to the turbulence cover (210) to reset, so that the suction port (2101) is separated from the collection chamber (2102).
4. The material cleaning device (10) according to claim 3, characterized in that, One end of the rotating flap (2220) is formed with an installation ring (2222), which is sleeved on the rotating shaft (2210).
5. The material cleaning device (10) according to claim 3, characterized in that, The material cleaning device (10) also includes a rotating bearing component, the inner ring of which is sleeved on the end of the rotating shaft (2210), and the outer ring of which is fixedly installed on the spoiler cover (210).
6. The material cleaning device (10) according to claim 3, characterized in that, The rotating opening and closing component (220) also includes a sealing gasket (2230), which is provided to cover the periphery of the other end of the rotating flap (2220).
7. The material cleaning device (10) according to claim 1, characterized in that, The preset distance is in the range of 1mm-2mm.
8. The material cleaning device (10) according to claim 1, characterized in that, One end of the negative pressure fitting (110) is detachably connected to the negative pressure collection system.
9. An ultrasonic vibrating screen, characterized in that, The device includes a vibrating screen base (300), a screening mechanism (400), and a material cleaning device (10) according to any one of claims 1-8. The screening mechanism (400) is fixedly installed on the vibrating screen base (300). The screening mechanism (400) has a coarse screening chamber (401), a fine screening chamber (402), and a material collection chamber (403) connected in sequence. The screening mechanism (400) also has an installation hole (404) communicating with the fine screening chamber (402). The turbulence cover (210) is installed in the fine screening chamber (402).