Ultrasonic vibrating screen, screen mesh replacement device and replacement method

Abstract

The invention discloses an ultrasonic vibrating screen and a screen replacing device and method. The ultrasonic vibrating screen comprises a vibrating screen body and an upper cover assembly arranged on the vibrating screen body. The device further comprises a screen assembly, a butt joint mechanism and a pressing mechanism. The screen mesh assembly is arranged in the vibrating screen body and connected with the upper cover assembly, the screen mesh assembly comprises a screen mesh, a screen mesh frame, a middle frame and an energy converter which are connected into a whole, and the screen mesh frame is detachably connected with the middle frame; a wiring end is arranged on the middle frame, an external contact of the wiring end faces the butt joint mechanism, and an internal contact of the wiring end is in wiring connection with the transducer; the pressing mechanism comprises at least one pressing driving part which is connected with the upper cover assembly and used for driving the upper cover assembly to be lifted or pressed on the screen assembly. The invention further discloses a screen cloth replacing device and method of the ultrasonic vibrating screen. The device is time-saving, labor-saving and high in assembly and disassembly efficiency, and solves the technical problem that the existing manual disassembly of the screen is time-consuming and labor-consuming.

Description

Technical Field

[0001] The present invention relates to the technical field of ultrasonic vibrating screens, in particular to an ultrasonic vibrating screen, a screen replacement device and a replacement method. Background Art

[0002] Vibrating screens are devices widely used in industries such as mining, metallurgy, coal, chemical industry, and building materials, mainly used for processes such as classification and screening of solid granular materials. It uses the kinetic energy generated by vibration to make the material perform a vibrating motion on the surface of the screen, thereby realizing the separation of the material according to particle size and meeting the requirements of different production processes.

[0003] When replacing the internal screen of the existing vibrating screen, it is necessary to manually disassemble each component of the vibrating screen device before the internal screen can be replaced. For example, it is necessary to remove the vibrating screen seal, the upper cover assembly of the vibrating screen, the transducer wiring of the ultrasonic vibrator, and the ultrasonic vibrator, etc., and then the internal screen can be taken out. Since the seals of the existing vibrating screen device are thread-connected, the upper cover assembly is also thread-connected, and one end of the transducer is thread-connected to the vibrating screen and the other end is connected to the ultrasonic vibrator using an aviation plug wiring, these operations all need to be manually handled for installation and disassembly. At the same time, the removed screen needs to be manually carried outside the device for processing. When replacing the internal screen, the screen frame and the middle frame are clamped to each other by heavy-duty clamps, and the disassembly process also requires manual operation. All of these links have various problems such as being laborious and time-consuming.

[0004] Therefore, the present invention urgently needs to design a device capable of automatically replacing the internal screen of a vibrating screen to solve the technical problems of time-consuming and laborious caused by manually disassembling the internal screen. Summary of the Invention

[0005] The object of the present invention is to overcome the above deficiencies of the prior art and provide an ultrasonic vibrating screen, a screen replacement device and a replacement method that save time and effort and have a high installation and disassembly efficiency.

[0006] The technical solution of the present invention is as follows: An ultrasonic vibrating screen of the present invention includes a vibrating screen main body and an upper cover assembly provided on the vibrating screen main body; it further includes: A screen assembly, which is arranged inside the vibrating screen main body and connected to the upper cover assembly, includes a screen, a screen frame, a middle frame and a transducer connected together as a whole, and the screen frame and the middle frame are detachably connected; a wiring terminal is provided on the middle frame, the external contact of the wiring terminal faces the docking mechanism, and the internal contact of the wiring terminal is connected to the transducer wiring; A docking mechanism, including a probe and a probe driving part, one end of the probe is connected to the ultrasonic generator wiring, and the other end is connected to the external contact of the wiring terminal; the probe driving part is used to drive the probe to move horizontally to realize the separation and combination between the transducer and the probe; The pressing mechanism includes at least one pressing drive part, which is connected to the upper cover assembly and is used to drive the upper cover assembly to lift or press onto the screen assembly.

[0007] Furthermore, the upper cover assembly includes an upper cover and a fastener connected to the upper cover. The lower end of the fastener is snap-fitted to the middle frame of the screen assembly, and the snap-fitting method ensures that the upper cover assembly can smoothly disengage from the screen assembly under the action of the pressing mechanism.

[0008] Furthermore, at least one layer of screen assembly is provided inside the vibrating screen main body; when there are multiple layers, the lower end of the middle frame of the upper layer screen assembly is snap-fitted to the upper end of the middle frame of the lower layer screen assembly, and the snap-fitting method ensures that the upper layer screen assembly can smoothly disengage from the lower layer screen assembly when it is removed.

[0009] Furthermore, a clamping groove is provided on the side or bottom edge of the screen frame, and guiding grooves and spring installation cavities are provided at corresponding positions on the side walls at least at both ends of the middle frame; the clamping groove of the screen frame is located inside the guiding groove, a clamping stop link is arranged in the spring installation cavity, a spring is connected between the clamping stop link and the middle frame, a clamping head matching the clamping groove is provided at one end of the clamping stop link, and the other end extends out of the spring installation cavity and is driven to act by a clamping stop link drive part; the clamping stop link is connected to a hinge point and can rotate under the drive of the clamping stop link drive part to drive the clamping head to engage with or disengage from the clamping groove, so as to realize the connection or separation between the screen frame and the middle frame.

[0010] Furthermore, the disassembly and assembly of the screen frame and the middle frame are realized through a separation tooling. The separation tooling includes a platform and the clamping stop link drive parts arranged on at least two sides of the platform; the screen assembly is placed on the platform, and the connection or separation between the screen frame and the middle frame is realized by driving the clamping stop link to rotate through the clamping stop link drive part.

[0011] Furthermore, the pressing drive part, the probe drive part and the clamping stop link drive part are cylinders, oil cylinders, electric cylinders or other drive mechanisms.

[0012] A screen replacement device for an ultrasonic vibrating screen according to any one of the foregoing items of the present invention includes a stock bin and a disassembly and assembly unit. The disassembly and assembly unit further includes a moving mechanism, a lifting mechanism and a clamping jaw mechanism; the clamping jaw mechanism is used to grab the screen assembly to be replaced inside the vibrating screen main body; the lifting mechanism is used to drive the clamping jaw mechanism to lift and lower, grab the screen assembly by descending, and move the screen assembly out of the vibrating screen main body by ascending; the moving mechanism is used to drive the lifting mechanism and the clamping jaw mechanism to move together to the position above the screen assembly of the vibrating screen main body and the target position of the stock bin.

[0013] Furthermore, the stock bin is provided with at least one layer of conveying mechanism, and a fixture for positioning the screen assembly is arranged on the conveying mechanism; the conveying mechanism is used to move the fixture to the target position of the stock bin to receive the screen assembly to be replaced grabbed by the jaw mechanism, and is also used to send the new screen assembly to the lower part of the jaw mechanism.

[0014] A method for replacing the screen of an ultrasonic vibrating screen according to the present invention includes the following steps: S1: When the vibrating screen main body is working normally, the pressing mechanism controls the upper cover assembly to press tightly on the screen assembly, and the probe is connected to the wiring terminal of the screen assembly, so that the ultrasonic generator is connected to the transducer; S2: When the screen assembly in the vibrating screen main body needs to be replaced, it includes: S2-1: The probe is driven by the probe driving part to disengage from the wiring terminal, so that the transducer is disconnected; and the pressing mechanism controls the upper cover assembly to lift to the target position and wait for the screen replacement device to pick up the material; S2-2: The moving mechanism of the screen replacement device drives the jaw mechanism to move above the vibrating screen main body, and the lifting mechanism moves downward to make the jaw mechanism clamp the screen assembly to be replaced; then it moves upward to remove the screen assembly from the vibrating screen main body; then the moving mechanism drives the screen assembly to be replaced to move to the target position of the stock bin; S2-3: The conveying mechanism in the stock bin sends the fixture to the target position of the stock bin, and the jaw mechanism releases the screen assembly so that it falls to the fixture of the conveying mechanism for positioning and output; the same conveying mechanism or another conveying mechanism places the new screen assembly at the fixture and sends it to the lower part of the jaw mechanism; the jaw mechanism grabs the new screen assembly and sends it into the vibrating screen main body; S2-4: After all the screen assemblies in the vibrating screen main body are replaced, the pressing mechanism controls the upper cover assembly to press tightly on the screen assembly.

[0015] Furthermore, it further includes the following steps: S3: Disassemble the screen assembly to be replaced: Use a separation tooling to separate the screen frame and the middle frame; manually or use a screen stretching machine to separate the screen and the screen frame; S4: Assemble the replaced components to form a new screen assembly: Use a screen stretching machine to assemble the screen and the screen frame; use a separation tooling to assemble the screen frame and the middle frame.

[0016] The beneficial effects of the present invention: The present invention optimizes the entire structure of the ultrasonic vibrating screen. That is, by setting the snap-fit and sealed connection between the upper cover assembly and the screen assembly, and combining with the pressing mechanism, the vibrating screen can realize automatic opening and sealing of the cover, greatly improving the disassembly and assembly convenience of the screen assembly, and ensuring the sealing performance between the upper cover assembly and the screen assembly.

[0017] The present invention optimizes the structure of the screen assembly by integrating the screen, screen frame, transducer and middle frame into one, and realizing the clutch of the line connection of the transducer through the docking method of the docking mechanism, so that the screen replacement device can move the screen assembly out as a whole, thereby reducing the difficulty of manually disassembling the internal screen of the vibrating screen, shortening the time for replacing the screen, and greatly improving the assembly and disassembly efficiency.

[0018] The present invention adds a screen replacement device, which can realize automatic assembly and disassembly of the screen assembly, saving time and labor, and only requires manual placement of the newly replaced screen assembly in the material preparation bin for temporary storage, and the rest of the material removal and loading are all automatically replaced through the screen replacement device, greatly improving convenience and assembly and disassembly efficiency.

[0019] The present invention adds a separation tooling, and designs the connection structure between the screen frame and the middle frame into a structure of locking connecting rod locking and pressing + spring pre-tightening. The two can be separated and assembled by only controlling the locking connecting rod to rotate open or press by the unlocking cylinder on the separation tooling, which solves the technical problem of the existing manual disassembly of heavy fixtures, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the internal structure of the ultrasonic vibrating screen of Example 1 of the present invention; Figure 2 yes Figure 1 An enlarged structural diagram of the connection between the upper cover assembly and the screen assembly and the connection between the screen frame and the middle frame of the embodiment 1 shown; Figure 3 is a schematic structural diagram of a screen assembly according to Embodiment 1 of the present invention; Figure 4 Schematic diagram of the arrangement of the ultrasonic vibrating screen and the screen replacement device according to Embodiment 2 of the present invention; Figure 5 is a schematic structural diagram of a screen replacement device according to Embodiment 2 of the present invention; Figure 6 It is a schematic diagram of the structure of the separation tooling according to Example 3 of the present invention.

[0021] Description of the accompanying drawings: 1. Vibrating screen body; 2. Screen assembly; 3. Upper cover assembly; 4. Docking mechanism; 5. Frame; 6. Pressing cylinder; 7. Screen replacement device; 8. Separation tooling; 21. Screen; 22. Screen frame; 23. Middle frame; 24. Transducer; 31. Upper cover; 32. Fastener; 33. Groove; 34. Seal; 41. Probe; 42. Probe drive cylinder; 71. Material preparation bin; 72. Moving mechanism; 73. Lifting mechanism; 74. Clamping mechanism; 81. Platform; 82. Unlocking cylinder; 221. Card slot; 231. Terminal; 232. Guide groove; 233. Spring installation cavity; 234. Latching link; 235. Spring; 236. Hinge point; 711. Conveyor mechanism; 2341. Chuck. Detailed implementation mode

[0022] The present invention will be further described in detail below with reference to the accompanying drawings of the specification and specific embodiments.

[0023] Embodiment 1

[0024] As Figures 1 to 3 shown: An ultrasonic vibrating screen includes a vibrating screen main body 1, at least one layer of screen assembly 2 provided in the vibrating screen main body 1, a pressing mechanism for pressing or lifting the upper cover assembly 3, and a docking mechanism 4 for selectively electrically connecting with the transducer 24.

[0025] In this embodiment, the upper cover assembly 3 includes an upper cover 31 and a fastener 32 connected to the upper cover. A groove 33 is provided at the lower end of the fastener 32, which can be engaged and connected with the screen assembly 2. In addition, a seal 34 is connected in the groove 33 to achieve a sealed engagement with the screen assembly 2.

[0026] In this embodiment, a frame 5 is further provided outside the vibrating screen main body 1 for connecting the pressing mechanism. The pressing mechanism includes at least one pressing cylinder 6. In this embodiment, two pressing cylinders 6 are preferably provided, symmetrically arranged on both sides of the upper cover 31. The pressing cylinders 6 are fixed on the frame 5, and the piston end is threadedly connected to the edge of the upper cover 31. By providing an up-and-down movement, it can drive the upper cover assembly 3 to open or close and press on the screen assembly 2. When the vibrating screen main body 1 is working normally, the pressing cylinder 6 controls the upper cover assembly 3 to press on the screen assembly 2; when the screen assembly 2 needs to be replaced, the pressing cylinder 6 moves upward to lift the upper cover assembly 3, leaving space for the screen replacement device 7 to operate on the screen assembly 2. In this embodiment, by adding a pressing mechanism for automatic opening and automatic pressing, the problem of the time-consuming and laborious removal of the fasteners and seals of the upper cover assembly by manual in the prior art is solved, and the degree of automation is greatly improved.

[0027] In this embodiment, the screen assembly 2 includes a screen 21, a screen frame 22, a middle frame 23, and a transducer 24. The four components are designed as an integrated structure to form the screen assembly 2, which can be disassembled and installed as a whole to solve the problem of manually removing the transducer. Among them, the screen 21 is embedded in the screen frame 22. The middle frame 23 plays a role in supporting the screen frame 22 and other components. During operation, vibration is transmitted from the middle frame 23 to the screen frame 22, and the screen frame 22 and the screen 21 vibrate together to achieve the purpose of screening. On the side (i.e., the outer side) of the middle frame 23 facing the docking mechanism 4, there is a terminal block 231. The external contact of the terminal block 231 faces the docking mechanism 4 to facilitate connection with the probe 41 of the docking mechanism. The internal contact of the terminal block 231 is arranged towards the inner side of the middle frame to be connected to the internal transducer 24. The transducer 24 is fixed to the middle frame 23, preferably detachably connected to the middle frame 23, such as by screwing or clamping.

[0028] The middle frame 23 is detachably connected to the screen frame 22. The specific connection structure is as follows: There are card slots 221 on the side or bottom edge of the screen frame 22. At the corresponding positions on the side walls at both ends of the middle frame 23, there are guide slots 232 and spring installation cavities 233. The card slot 221 of the screen frame is located in the guide slot 232. A locking link 234 is arranged in the spring installation cavity 233. A spring 235 is connected between the locking link 234 and the middle frame 23. One end of the locking link 234 is provided with a card head 2341 that matches the card slot, and the other end extends out of the spring installation cavity 233 to facilitate connection with the unlocking cylinder 82 or the operating handle. The locking link 234 is connected to a hinge point 236 and can rotate under the drive of the unlocking cylinder 82 or the operating handle. Under normal conditions, the spring 235 provides a pre-tightening force to make the card head 2341 embed in the card slot 221 to clamp the screen frame 22 and prevent it from moving. When it is necessary to separate the middle frame 23 from the screen frame 22, the unlocking cylinder 82 or the operating handle controls the locking link 234 to rotate around the hinge point 236. The locking link 234 retreats against the pre-tightening force of the spring 235, causing the card head 2341 to disengage from the card slot 221, thereby realizing the rapid separation of the screen frame 22 and the middle frame 23. Preferably, the card slot 221 is a hollow rectangular frame, and the card head can be stuck on the side wall at the opening of the rectangular frame to clamp the screen frame 22.

[0029] In this embodiment, the fastener 32 of the upper cover assembly is a bent structure and can be bent towards the direction of the middle frame 23. The outer periphery of the middle frame 23 extends upward, and the extended part just corresponds to the groove 33 of the upper cover assembly 3 and can be inserted into the groove 33 for clamping. Through the pressing mechanism, the upper cover assembly 3 is hermetically connected to the screen assembly 2. By driving the upper cover assembly 3 to disengage from the screen assembly 2 through the pressing mechanism, the overall disassembly and assembly of the screen assembly 2 can be realized.

[0030] In this embodiment, when a multi-layer screen assembly 2 is provided, a groove 33 also extends from the lower end of the middle frame 23 of the upper-layer screen assembly, and a seal may also be provided in the groove to facilitate sealing engagement with the upper end of the middle frame of the lower-layer screen assembly for convenient multi-layer disassembly. The bottom-layer screen assembly can be directly placed in the vibrating screen main body 1 without being fixed, and only needs to be integrally pressed by a pressing mechanism, which will neither cause displacement of the screen assembly during operation nor facilitate disassembly.

[0031] In this embodiment, the docking mechanism 4 includes a probe driving cylinder 42 and a probe 41. The probe driving cylinder 42 is installed on the frame 5, and the piston end is connected to the probe 41 to provide the moving source power for the probe 41. One end of the probe 41 is connected to the wiring of the ultrasonic generator, and the other end is connected to the external contact of the terminal block 231, while the internal contact of the terminal block 231 is connected to the transducer 24. When the screen assembly 2 needs to be replaced, the probe driving cylinder 42 drives the probe 41 to disengage from the terminal block 231, thereby disconnecting the transducer 24; when the vibrating screen main body 1 is operating normally, the probe driving cylinder 42 drives the probe 41 to press against the terminal block 231. Since both the probe 41 and the terminal block 231 are made of conductive materials, the ultrasonic generator is connected to the transducer 24, thus realizing the ultrasonic vibration of the vibrating screen. It can be said that the above structure realizes the engagement and disengagement between the transducer 24 and the probe 41 through the action of the probe driving cylinder 42, which is convenient for the automatic loading and unloading of the screen assembly 2. After the transducer is built-in and the engagement and disengagement are set, the screen can be separated without overall disassembly of the transducer and the wiring.

[0032] In summary, in this embodiment, by providing a pressing mechanism, the upper cover assembly 3 can be automatically pressed during the operation of the vibrating screen main body 1 and automatically opened when the screen assembly 2 needs to be replaced, without manual operation, thus solving the problem that it is time-consuming and laborious to manually remove the fasteners and seals of the upper cover assembly. By integrating the screen, the screen frame, the middle frame, and the transducer into a screen assembly for overall installation and disassembly, the installation and disassembly efficiency is greatly improved. Moreover, by combining with the docking mechanism, the connection and disconnection of the transducer can be realized, so that there is no need to manually disassemble the transducer, achieving 100% automatic disassembly. By engaging the upper cover assembly with the screen assembly and engaging the adjacent-layer screen assemblies, the convenience of disassembly can be greatly improved.

[0033] Embodiment 2

[0034] As Figure 4 and Figure 5As shown in the figure: A screen replacement device for an ultrasonic vibrating screen, which can automatically disassemble the screen assembly 2 in Embodiment 1. Specifically, it includes a stock bin 71 and a disassembly and assembly unit. The disassembly and assembly unit further includes a moving mechanism 72, a lifting mechanism 73, and a jaw mechanism 74. The jaw mechanism 74 is installed on the lifting mechanism 73, and the lifting mechanism 73 is installed on the moving mechanism 72. The jaw mechanism 74 is used to grasp the screen assembly 2 inside the vibrating screen main body; the lifting mechanism 73 is used to drive the jaw mechanism 74 to lift and lower. By moving downward, the jaw mechanism 74 grasps the screen assembly 2, and by moving upward, the screen assembly 2 is removed from the vibrating screen main body 1. The moving mechanism 72 is used to drive the lifting mechanism 73 and the jaw mechanism 74 to move forward and backward or left and right, and the moving direction can be determined according to the layout positions of each device. For example, in this embodiment, the moving mechanism 72 moves forward and backward. The screen replacement device 7 is arranged on one side of the vibrating screen main body 1. By driving the lifting mechanism 73 and the jaw mechanism 74 to move forward, the jaw mechanism 74 is moved above the vibrating screen main body 1. Then the lifting mechanism 73 moves downward to make the jaw mechanism 74 clamp the screen assembly 2 to be replaced, and then moves upward to remove the screen assembly 2 from the vibrating screen main body 1; afterwards, the moving mechanism 72 drives the lifting mechanism 73 and the jaw mechanism 74 to move backward to the target position of the stock bin 71.

[0035] It can be understood that the self-structures of the moving mechanism and the lifting mechanism are already conventional technologies, and will not be specifically described here. The structural design of the jaw mechanism in this embodiment only needs to meet the requirement of being able to clamp the screen assembly, and it can be a suction cup or two opposite jaws, etc.

[0036] In this embodiment, the stock bin 71 is provided with at least one conveying mechanism 711. The conveying mechanism 711 is provided with a fixture for positioning and placing the screen assembly 2. The fixture can be a positioning frame or a pneumatic fixture. The conveying mechanism 711 is a conveying line, such as a conveyor belt or a roller conveyor line, etc. When the moving mechanism 72 drives the screen assembly 2 to be replaced to move to the target position of the stock bin 71, at this time, the conveying mechanism 711 under the idle bin position of the stock bin 71 translates the fixture out towards the direction of the screen assembly to be replaced. The jaw mechanism 74 releases the screen assembly 2 so that it falls onto the fixture of the conveying mechanism 711 for positioning. The conveying mechanism 711 sends the old screen assembly to the target position to wait for manual removal or to be connected to other conveying methods to be sent away from the production line, and places the new screen assembly on the fixture of the conveying mechanism and sends it to the lower part of the jaw mechanism 74. The jaw mechanism 74 grasps the new screen assembly and sends it into the vibrating screen main body 1.

[0037] In this embodiment, before the replacement device takes the material, the pressing cylinder 6 opens the cover in advance and waits for the replacement device to take the material. When the replacement device takes out the old screen assembly and replaces the new screen assembly into the vibrating screen main body 1, the pressing cylinder 6 then moves downward to press the upper cover assembly 3.

[0038] In this embodiment, a multi-layer conveying mechanism can be arranged in the stock bin. On the one hand, it can be applicable to the situation where the multi-layer screen meshes in the vibrating screen main body are all disassembled and replaced. On the other hand, one conveying mechanism can convey the old screen assembly, and the other conveying mechanism can convey the new screen assembly to improve the replacement efficiency.

[0039] In summary, through the whole disassembly and assembly unit of this embodiment, by taking out the old screen assembly from the vibrating screen main body and replacing it with a new screen assembly, the technical problem that it is time-consuming and laborious to take out the screen and the screen frame after manually disassembling the equipment is effectively solved.

[0040] Embodiment 3

[0041] As Figure 6 shown: A separating tooling for the screen assembly is used to separate the disassembled screen assembly 2, mainly to separate the screen frame 22 from the middle frame 23. The separating tooling 8 includes a platform 81 and unlocking cylinders 82 arranged on both sides of the platform. The screen assembly 2 is placed on the platform 81, and the unlocking cylinders 82 on both sides are correspondingly arranged with the locking link rods 234 on both sides of the screen assembly 2. When separation is required, the unlocking cylinders 82 act, the pistons extend to push the locking link rods 234 to rotate around the hinge point 236, and the locking link rods 234 retreat against the pre-tightening force of the spring 235, so that the locking heads 2341 disengage from the card slots 221, and the middle frame 23 is separated from the screen frame 22. The separation of the screen 21 from the screen frame 22 can be carried out on a screen stretching machine, thus realizing the separation of the old screen assembly 2.

[0042] After the screen stretching machine installs the screen 21 and the screen frame 22 into one body, it can continue to return to the separating tooling 8 for the assembly of the screen frame 22 and the middle frame 23. First, the screen frame 22 and the middle frame 23 are butted, and then the unlocking cylinders 82 act to drive the locking heads 2341 of the locking link rods to be embedded in the card slots 221 to clamp the screen frame 22, and the spring 235 provides a pre-tightening force, thus assembling a new screen assembly 2.

[0043] Preferably, in this embodiment, the separating tooling 8 can be integrated on the screen stretching machine to make the structure more compact and the disassembly and assembly efficiency higher.

[0044] In summary, through the setting of the separating tooling in this embodiment, the automatic separation and assembly of the screen frame and the middle frame can be realized, solving the technical problem that manual workers need to manually disassemble heavy fixtures, saving time and labor, and greatly improving the disassembly and assembly efficiency.

[0045] Embodiment 4

[0046] A method for replacing the screen of an ultrasonic vibrating screen includes the following steps: S101: When the vibrating screen main body 1 is working normally, the pressing cylinder 6 controls the upper cover assembly 3 to press tightly on the screen assembly 2, and the probe 41 is connected to the terminal 231 of the screen assembly 2, so that the ultrasonic generator is connected to the transducer 24; S201: When the screen assembly 2 inside the vibrating screen main body needs to be replaced, it includes: The probe 41 is driven by the probe driving cylinder 42 to disengage from the external contact of the terminal 231, disconnecting the connection of the transducer 24; and the pressing cylinder 6 controls the upper cover assembly 3 to lift to the target position, waiting for the screen replacement device 7 to pick up the material; The moving mechanism 72 of the screen replacement device 7 drives the jaw mechanism 74 to move above the vibrating screen main body 1, and the lifting mechanism 73 moves downward to make the jaw mechanism 74 clamp the screen assembly 2 to be replaced; then it moves upward to remove the screen assembly 2 from the vibrating screen main body 1; afterwards, the moving mechanism 72 drives the screen assembly 2 to be replaced to move to the target position in the stock bin 71; The conveying mechanism 711 in the stock bin 71 sends the fixture to the target position in the stock bin, and the jaw mechanism 74 releases the screen assembly 2 to make it fall to the fixture of the conveying mechanism 711 for positioning and output; the same conveying mechanism or another conveying mechanism places the new screen assembly on the fixture and sends it to the lower part of the jaw mechanism 74; the jaw mechanism 74 grabs the new screen assembly and sends it into the vibrating screen main body 1; After all the screen assemblies 2 in the vibrating screen main body 1 are replaced, the pressing cylinder 6 controls the upper cover assembly 3 to press tightly on the screen assembly 2; S301: Disassemble the screen assembly 2 to be replaced taken out from the stock bin: Separate the screen frame 22 and the middle frame 23 by using the separation tooling 8; Separate the screen 21 and the screen frame 22 by using a screen stretching machine; S401: Assemble the replaced components to form a new screen assembly 2: Assemble the screen 21 and the screen frame 22 by using a screen stretching machine; Assemble the screen frame 22 and the middle frame 23 by using the separation tooling 8, and store the new screen assembly in the stock bin for temporary storage as stock.

[0047] In summary, the present invention optimizes the overall structure of the ultrasonic vibrating screen, that is, by setting the snap - fit and sealed connection between the upper cover assembly and the screen assembly, and combining with the pressing mechanism, the vibrating screen can realize automatic opening and sealing of the cover, greatly improving the disassembly and assembly convenience of the screen assembly, and ensuring the sealing between the upper cover assembly and the screen assembly.

[0048] The present invention optimizes the structure of the screen assembly. By integrating the screen, the screen frame, the transducer and the middle frame into one body, and realizing the separation and combination of the transducer's circuit connection through the docking method of the docking mechanism, the screen replacement device can move out the screen assembly as a whole, reducing the difficulty of manually disassembling the screen inside the vibrating screen, shortening the screen replacement time, and greatly improving the assembly and disassembly efficiency.

[0049] The present invention is provided with a screen replacement device, which can realize the automatic installation and disassembly of the screen assembly, saving time and effort. Only manual labor is required to place the newly replaced screen assembly in the stock bin for temporary storage, and the rest of the material taking and loading can be automatically completed by the screen replacement device, greatly improving the convenience and the installation and disassembly efficiency.

[0050] The present invention is provided with a separation tooling, and the connection structure between the screen frame and the middle frame is designed as a structure of a locking connecting rod being clamped and pressed + spring pre-tightening. Only by controlling the locking connecting rod to rotate and open or press by the unlocking cylinder on the separation tooling can the separation and assembly of the two be realized, solving the technical problem that manual labor is required to manually disassemble heavy fixtures in the prior art, saving time and effort.

[0051] In addition, the term "connection" should be understood in a broad sense. For example, it may include fixed connection, detachable connection or integral connection; it may include direct connection, or may be indirectly connected through an intermediate medium, and may also include the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in this application can be understood according to specific situations.

[0052] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0053] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present application.

Claims

1. An ultrasonic vibrating screen, comprising a vibrating screen body and an upper cover assembly arranged on the vibrating screen body; characterized in that: Also includes: The screen assembly is arranged in the vibration screen body and connected to the upper cover assembly, including a screen, a screen frame, a middle frame and a transducer connected as one body, and the screen frame and the middle frame are detachably connected; a wiring terminal is arranged on the middle frame, the external contact of the wiring terminal faces the docking mechanism, and the internal contact of the wiring terminal is connected to the transducer wiring; The docking mechanism comprises a probe and a probe driving part, wherein one end of the probe is connected to the ultrasonic generator wiring, and the other end is connected to the external contact of the wiring end; the probe driving part is used to drive the probe to move horizontally to realize the clutch between the transducer and the probe; The clamping mechanism includes at least one clamping driving part connected to the upper cover assembly and used for driving the upper cover assembly to lift up or clamp the upper cover assembly onto the screen assembly.

2. The ultrasonic vibrating screen according to claim 1, characterized in that: The upper cover assembly includes an upper cover and a fastener connected to the upper cover. The lower end of the fastener is snap-connected with the middle frame of the screen assembly. The snap-connection method ensures that the upper cover assembly can be smoothly separated from the screen assembly under the action of the clamping mechanism.

3. The ultrasonic vibrating screen according to claim 1, characterized in that: At least one layer of screen assembly is provided in the vibrating screen body; when multiple layers are provided, the lower end of the middle frame of the upper screen assembly is engaged with the upper end of the middle frame of the lower screen assembly, and the engagement method ensures that the upper screen assembly can be smoothly separated from the lower screen assembly when it is moved out.

4. The ultrasonic vibrating screen according to claim 1, characterized in that: A card slot is provided on the side or bottom edge of the screen frame, and a guide slot and a spring installation cavity are provided at corresponding positions of the side walls at at least two ends of the middle frame; the card slot of the screen frame is located in the guide slot, and a locking link is provided in the spring installation cavity, and the spring is connected between the locking link and the middle frame, and one end of the locking link is provided with a clamping head matching the card slot, and the other end extends out of the spring installation cavity, and is driven by the locking link driving part to move; the locking link is connected to the hinge point, and can rotate under the drive of the locking link driving part, driving the clamping head to clamp into and disengage from the card slot, thereby realizing the connection or separation of the screen frame and the middle frame.

5. The ultrasonic vibrating screen according to claim 4, characterized in that: The disassembly and assembly of the screen frame and the middle frame are achieved through a separation tool, which includes a platform and the locking link driving part arranged on at least two sides of the platform; the screen assembly is placed on the platform, and the locking link driving part drives the locking link to rotate to achieve the connection or separation of the screen frame and the middle frame.

6. The ultrasonic vibrating screen according to claim 4, characterized in that: The pressing driving part, the probe driving part and the locking connecting rod driving part are air cylinders, oil cylinders or electric cylinders.

7. A screen replacement device for an ultrasonic vibrating screen according to any one of claims 1 to 6, characterized in that: It includes a material preparation bin and a disassembly and assembly unit, and the disassembly and assembly unit includes a moving mechanism, a lifting mechanism and a clamping mechanism; the clamping mechanism is used to grab the screen assembly to be replaced in the vibration screen body; the lifting mechanism is used to drive the clamping mechanism to rise and fall, and the clamping mechanism grabs the screen assembly by moving downward, and moves the screen assembly out of the vibration screen body by moving upward; the moving mechanism is used to drive the lifting mechanism and the clamping mechanism to move together to the top of the screen assembly of the vibration screen body and the target position of the material preparation bin.

8. The screen replacement device for ultrasonic vibration screen according to claim 7, characterized in that: The material preparation bin is provided with at least one layer of conveying mechanism, on which a clamp for positioning the screen assembly is provided; the conveying mechanism is used to move the clamp to the target position of the material preparation bin to receive the screen assembly to be replaced grasped by the clamping mechanism, and is also used to deliver the new screen assembly to the bottom of the clamping mechanism.

9. A method for replacing a screen of an ultrasonic vibrating screen, characterized in that: The following steps are involved: S1: When the vibrating screen body works normally, the pressing mechanism controls the upper cover assembly to be pressed against the screen assembly, and the probe is connected to the wiring terminal of the screen assembly, so that the ultrasonic generator is connected to the transducer; S2: When the screen assembly in the vibrating screen body needs to be replaced, including: S2-1: The probe is driven by the probe driving unit to detach from the terminal, so that the transducer is disconnected; and the clamping mechanism controls the upper cover assembly to be lifted to the target position, waiting for the screen replacement device to take the material; S2-2: The moving mechanism of the screen replacement device drives the clamping mechanism to move to the top of the vibrating screen body, and the lifting mechanism moves downward to make the clamping mechanism clamp the screen assembly to be replaced; then moves upward to move the screen assembly out of the vibrating screen body; then the moving mechanism drives the screen assembly to be replaced to the target position of the material preparation bin; S2-3: The conveying mechanism in the material preparation bin delivers the fixture to the target position of the material preparation bin, and the clamping mechanism releases the screen assembly so that it falls to the fixture of the conveying mechanism for positioning and output; the same conveying mechanism or another conveying mechanism places a new screen assembly at the fixture and delivers it to the bottom of the clamping mechanism; the clamping mechanism grabs the new screen assembly and delivers it to the main body of the vibrating screen; S2-4: After all the screen assemblies in the vibrating screen body are replaced, the pressing mechanism controls the upper cover assembly to be pressed onto the screen assembly.

10. The method for replacing the screen of the ultrasonic vibration screen according to claim 9, characterized in that: The following steps are also included: S3: Disassemble the screen assembly to be replaced: Use a separation tool to separate the screen frame from the middle frame; Separate the screen from the screen frame manually or using a stretching machine; S4: Assemble the replaced components to form a new screen assembly: use a screen stretching machine to assemble the screen and the screen frame; The screen frame and the middle frame are assembled using a separation tool.

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