Material screening device for chemical production

Abstract

This utility model relates to the field of chemical production technology and discloses a material screening device for chemical production. The device includes a support mechanism, a horizontally positioned platform, a vibrating mechanism fixedly mounted on the platform, a screening mechanism above the vibrating mechanism, a crushing mechanism above the screening mechanism, and a drive mechanism above the crushing mechanism to control its movement. During operation, the device performs crushing and screening simultaneously. Vibration causes agglomerated materials to continuously tumble and expose new surfaces, while the crushing rollers move synchronously to crush the materials. This achieves a synergistic effect of vibration dispersion and rolling crushing, significantly improving the pretreatment efficiency of easily agglomerated chemical materials. The movement of the sliders drives the crushing rollers connected to the lower parts of the two sliders, causing the crushing rollers to move synchronously from both sides of the screen towards the center or to both sides, ensuring uniform crushing of the material on the screen surface.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and in particular to a material screening device for chemical production. Background Technology

[0002] In the production of chemical materials, screening is a crucial step. Its purpose is to separate materials of different particle sizes to meet the particle size requirements of subsequent production. Vibrating screens, as key equipment for this process, are widely used in the chemical materials production field. Existing vibrating screens typically include a screening box, a screen set inside the screening box, and a vibration mechanism to drive the screen to vibrate. During operation, the chemical material to be screened is placed on the screen, and the vibration mechanism drives the screen to vibrate, causing materials that meet the particle size requirements to fall through the mesh of the screen, while materials that do not meet the requirements remain on the screen, thus completing the screening operation.

[0003] Chinese utility model patent CN217165255U discloses a vibrating screen for chemical material production. In operation, the device uses a reciprocating screw and a moving screw cylinder, whose threaded connection causes the moving screw cylinder to drive a material-pushing plate back and forth, thus flattening the material placed on the screen. However, this device still has the following problems in use:

[0004] The lower end of the feeding plate is a triangular pusher section, which is only used to reduce pushing resistance and disperse materials. It has no related crushing structure. When the chemical raw materials contain large impurities or uncrushed hard particles, the feeding plate cannot crush them. Instead, it may deform itself due to collision with hard particles, loosen the connection parts, or cause large impurities to accumulate on the screen, affecting the screening efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a material screening device for chemical production, which can ensure stable operation of the equipment, crush large impurities, improve screening efficiency and quality, prevent large impurities from accumulating on the screen and clogging the screen holes or occupying the effective area of ​​the screen, ensure uniform dispersion of materials, and reduce the residue of unqualified materials.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a material screening device for chemical production, including a support mechanism, the support mechanism including a horizontally arranged placement platform, a vibration mechanism fixedly arranged on the placement platform, a screening mechanism arranged above the vibration mechanism, a crushing mechanism arranged above the screening mechanism, and a drive mechanism for controlling the movement of the crushing mechanism arranged above the crushing mechanism.

[0007] By adopting the above technical solution and setting the crushing mechanism and screening mechanism to work together, the agglomerated materials or large pieces of materials can be effectively crushed, ensuring that the materials are fully crushed when passing through the screen, thereby improving screening efficiency and accuracy.

[0008] The present invention is further configured as follows: the vibration mechanism includes a positioning block and a first drive motor fixedly mounted on the placement platform. The positioning block has a through hole in the horizontal direction, and a groove in the middle of the positioning block divides the through hole into two sections. A drive shaft is rotatably mounted in each section of the through hole. The two drive shafts extend into the groove at opposite ends and are respectively eccentrically fixed with a first protrusion and a second protrusion. A drive rod is rotatably connected between the first protrusion and the second protrusion. The end of one drive shaft away from the groove is fixedly connected to the output end of the first drive motor.

[0009] By adopting the above technical solution, the vibration mechanism converts the rotational motion of the transmission shaft into the reciprocating vibration of the transmission rod through the eccentric mechanism, thereby driving the screening mechanism to generate regular vibration, so that the material can be efficiently separated on the screen.

[0010] The present invention is further configured such that: the screening mechanism includes a screen frame, the vibration mechanism includes a horizontally arranged transmission plate, a transmission column arranged on the upper part of the transmission plate and whose top end is fixedly connected to the bottom surface of the screen frame, side plates are fixedly arranged on both sides of the transmission plate, and the other end of the transmission rod is rotatably connected to the side plate.

[0011] A further feature of this invention is that buffer springs are symmetrically fixed on the positioning blocks on both sides of the groove, and the end of the buffer spring away from the positioning block is fixedly connected to the bottom surface of the screen frame. A positioning cylinder that is sleeved on the outer periphery of the buffer spring is also fixedly installed on the bottom surface of the screen frame.

[0012] By adopting the above technical solution, the eccentric circular motion of the first and second protrusions is converted into a vertical reciprocating driving force through the transmission rod, thereby driving the transmission plate on it and the transmission column above the transmission plate to move up and down synchronously, and finally transmitting the up and down vibration to the screen frame and the screen inside, realizing the core vibration function of the screening mechanism.

[0013] A further feature of this invention is that a through circular groove is provided on the positioning block at the position corresponding to the positioning cylinder, the positioning cylinder extends into the circular groove, and can slide up and down along the circular groove.

[0014] By adopting the above technical solution, when the buffer spring is compressed, the positioning cylinder can slide into the circular groove without affecting the normal movement of the buffer spring. A further feature of this utility model is that the screening mechanism also includes a screen embedded in the screen frame, a screening box covering the upper part of the screen, a feed inlet on the side wall of the screening box, a guide hopper fixedly connected to the screen frame below the screen, and a discharge outlet at the bottom of the guide hopper.

[0015] By adopting the above technical solution, the screening box is set up above the screen to form a closed space, which not only avoids material waste, but also meets the environmental protection and safety requirements of chemical production.

[0016] A further feature of this invention is that the support mechanism includes pillars fixedly mounted on the placement platform and located on both sides of the screening mechanism, with support plates fixedly mounted on both pillars and fixing blocks fixedly mounted on both support plates.

[0017] By adopting the above technical solution, the fixing block fixedly installed on the support plate provides precise installation and positioning points at both ends of the bidirectional lead screw.

[0018] A further feature of this invention is that the driving mechanism includes a second driving motor fixedly mounted on a support plate. The output shaft of the second driving motor is fixedly connected to a coupling. The other end of the coupling is fixedly connected to a bidirectional lead screw. The two ends of the bidirectional lead screw are respectively rotatably engaged with two fixed blocks. Two sliders that mesh with the external threads of the lead screw are symmetrically sleeved on the two sections of the bidirectional lead screw.

[0019] By adopting the above technical solution, the two sections of the bidirectional lead screw are machined with external threads in opposite directions. When the lead screw rotates, the two sliders that mesh with the two threads will move in opposite directions symmetrically and synchronously along the axis of the lead screw. The movement of the sliders will drive the crushing rollers fixedly connected to the lower part of the two sliders, so that the crushing rollers move synchronously from both sides of the screen to the middle or to both sides, ensuring that the material on the screen surface is crushed evenly and avoiding local material not being processed.

[0020] A further feature of this invention is that the crushing mechanism includes a shock-absorbing spring fixedly disposed at the lower part of the slider, a mounting plate fixedly disposed at the end of the shock-absorbing spring away from the slider, and guide cylinders sleeved at both ends of the shock-absorbing spring and fixedly connected to the slider and the mounting plate respectively.

[0021] By adopting the above technical solution, when the crushing roller crushes agglomerated materials, it will be subjected to the reaction force of the materials. The shock-absorbing spring absorbs this impact force through its own elastic deformation, avoiding the reaction force from being directly transmitted to transmission components such as the slider and the two-way lead screw, thus extending the service life of the equipment.

[0022] A further feature of this invention is that a sliding groove is provided on the top plate of the screening box, and a sliding frame that can slide along the sliding groove is fixedly provided at the lower part of the mounting plate. A crushing roller that contacts the upper surface of the screen is rotatably provided at the lower part of the sliding frame.

[0023] By adopting the above technical solution, the crushing roller is rotated and set at the lower part of the sliding frame. When it comes into contact with the upper surface of the screen, the crushing roller rotates due to the friction of the material, which can roll and crush the material. Compared with sliding friction, rolling and crushing greatly improves the crushing efficiency.

[0024] The beneficial effects of this utility model are:

[0025] 1. In this application, the crushing process and the screening process are carried out simultaneously. The screen vibration causes the agglomerated material to roll continuously and expose new surfaces. The crushing roller moves synchronously to crush the material, realizing the synergistic effect of vibration dispersion and rolling crushing, which greatly improves the pretreatment efficiency of easily agglomerated chemical materials.

[0026] 2. The movement of the slider will drive the crushing rollers connected to the lower part of the two sliders to move synchronously from both sides of the screen to the middle or to both sides, ensuring that the material on the screen surface is crushed evenly and avoiding local material being left unprocessed.

[0027] 3. When the crushing roller crushes agglomerated materials, it will be subjected to the reaction force of the materials. The shock-absorbing spring absorbs this impact force through its own elastic deformation, preventing the reaction force from being directly transmitted to the sliding block, double-acting screw and other transmission components, effectively protecting the drive system. Furthermore, due to the elastic support of the shock-absorbing spring, the crushing roller can always maintain appropriate pressure contact with the screen surface. The extension and contraction of the shock-absorbing spring ensures that the roller body fits against the screen when rolling, ensuring that the material on the screen surface is crushed evenly. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the back of a material screening device for chemical production according to this utility model;

[0030] Figure 2 This is a schematic diagram of the overall structure of a material screening device for chemical production without the screening box body.

[0031] Figure 3 This is a frontal schematic diagram of the overall structure of a material screening device for chemical production according to this utility model;

[0032] Figure 4 This is a bottom view schematic diagram of the overall structure of a material screening device for chemical production according to this utility model;

[0033] Figure 5 This is a cross-sectional structural diagram of the vibration mechanism of a material screening device for chemical production according to this utility model.

[0034] In the diagram, 1. Support mechanism; 101. Placement platform; 102. Column; 103. Support plate; 104. Fixing block; 2. Vibration mechanism; 201. Positioning block; 202. First drive motor; 204. Groove; 205. Drive shaft; 206. First protrusion; 207. Second protrusion; 208. Drive rod; 209. Drive plate; 212. Side plate; 215. Drive column; 217. Buffer spring; 218. Positioning cylinder; 219. Circular 3. Screening mechanism; 301. Screen frame; 302. Screen mesh; 303. Screening box; 304. Feed inlet; 305. Guide hopper; 306. Discharge outlet; 4. Drive mechanism; 401. Second drive motor; 402. Coupling; 403. Double-acting lead screw; 404. Sliding block; 405. Slide chute; 5. Crushing mechanism; 501. Shock-absorbing spring; 502. Mounting plate; 503. Guide cylinder; 504. Sliding frame; 505. Crushing roller. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] This utility model embodiment specifically provides a material screening device for chemical production, including a support mechanism 1. The support mechanism 1 includes a horizontally arranged placement platform 101. A vibration mechanism 2 is fixedly arranged on the placement platform 101. A screening mechanism 3 is arranged above the vibration mechanism 2. A crushing mechanism 5 is arranged above the screening mechanism 3. A drive mechanism 4 for controlling the movement of the crushing mechanism 5 is arranged above the crushing mechanism 5.

[0037] Specifically, traditional screening devices can only screen bulk materials in good working condition. If chemical materials become damp or agglomerated and form lumps, it will lead to screening failure or a sharp drop in efficiency. To address this, this invention sets up a crushing mechanism 5 that works in conjunction with the screening mechanism 3 to effectively crush agglomerated or large materials, ensuring that the materials are fully crushed when passing through the screen 302, thereby improving screening efficiency and accuracy.

[0038] The drive mechanism 4 drives the bidirectional lead screw 403 to rotate through the coupling 402, causing the sliders 404 to move towards each other or in opposite directions at the same time. This, in turn, drives the crushing rollers 505 on the sliding frame 504 to move closer or further away in the horizontal direction, thereby crushing the material. The crushed material is vibrated by the vibration mechanism 2, falls from the screen 302 into the guide hopper 305, and is discharged through the discharge port 306.

[0039] Furthermore, the vibration mechanism 2 includes a positioning block 201 fixedly mounted on the placement platform 101 and a first drive motor 202. The positioning block 201 has a through hole in the horizontal direction, and a groove 204 dividing the through hole into two sections is opened in the middle of the positioning block 201. A drive shaft 205 is rotatably mounted in each section of the through hole. The two drive shafts 205 extend into the groove 204 at opposite ends, and a first protrusion 206 and a second protrusion 207 are respectively eccentrically fixed. A drive rod 208 is rotatably connected between the first protrusion 206 and the second protrusion 207. The end of one drive shaft 205 away from the groove 204 is fixedly connected to the output end of the first drive motor 202.

[0040] Specifically, the vibration mechanism 2 converts the rotational motion of the transmission shaft 205 into the reciprocating vibration of the transmission rod 208 through the eccentric mechanism, thereby driving the screening mechanism 3 to generate regular vibration, so that the material can be efficiently separated on the screen 302 (since two vibration mechanisms 2 are set, how the two motors can synchronously achieve the up and down vibration at both ends needs to be explained).

[0041] Furthermore, the screening mechanism 3 includes a screen frame 301, and the vibration mechanism 2 also includes a horizontally arranged transmission plate 209, a transmission column 215 arranged on the upper part of the transmission plate 209 and fixedly connected to the bottom surface of the screen frame 301 at its top, side plates 212 fixedly connected to both sides of the transmission plate 209, and the other end of the transmission rod 208 rotatably connected to the side plate 212.

[0042] Furthermore, buffer springs 217 are symmetrically fixed on the positioning blocks 201 on both sides of the groove 204. The end of the buffer spring 217 away from the positioning block 201 is fixedly connected to the bottom surface of the screen frame 301. The bottom surface of the screen frame 301 is also fixedly provided with a positioning cylinder 218 that is sleeved on the outer periphery of the buffer spring 217.

[0043] Furthermore, a through circular groove is provided on the positioning block corresponding to the position of the positioning cylinder, and the positioning cylinder extends into the circular groove and can slide up and down along the circular groove.

[0044] The specific working process of vibration mechanism 2 is as follows:

[0045] (1) When the first drive motor 202 is powered on, its output end drives the transmission shaft 205 fixedly connected to it to rotate. The transmission shaft 205 rotates in the positioning block 201 through the through hole. The end of the transmission shaft 205 extending into the groove 204 drives the first protrusion 206 fixedly connected to the end to rotate synchronously, forming an eccentric circular motion centered on the axis of the transmission shaft 205.

[0046] (2) When the first protrusion 206 rotates, it drives the second protrusion 207 in the groove 204 to move synchronously through the transmission rod 208 connected to it, so that the transmission shafts 205 on both sides of the groove 204 are linked through the transmission rod 208 to ensure the balance of motion.

[0047] (3) The eccentric circular motion of the first and second protrusions 207 is converted into a vertical reciprocating driving force through the transmission rod 208. During the process of the protrusion rotating around the transmission shaft 205 to the highest point, the transmission rod 208 pushes the transmission plate 209 to gradually move to the highest point; during the process of the protrusion rotating around the transmission shaft 205 to the lowest point, the transmission rod 208 pulls the side plate 212 to gradually move to the lowest point, forming the up-and-down reciprocating motion of the transmission plate 209.

[0048] (4) The transmission column 215 on the upper part of the transmission plate 209 moves up and down synchronously with the transmission plate 209. The transmission column 215 is fixedly connected to the bottom surface of the screen frame 301, and finally transmits the up and down vibration to the screen frame 301 and the screen 302 inside, realizing the core vibration function of the screening mechanism 3.

[0049] One end of the buffer spring 217 on both sides of the groove 204 of the positioning block 201 is fixedly connected to the positioning block 201, and the other end is fixedly connected to the lower surface of the screen frame 301. When the screen frame 301 vibrates up and down, the buffer spring 217 extends and contracts synchronously. The positioning cylinder 218, which is sleeved on the outer periphery of the buffer spring 217, can limit the lateral sway of the buffer spring 217 and ensure vertical buffering. At the same time, a through circular groove 219 is provided on the positioning block 201 at the position corresponding to the positioning cylinder 218. The positioning cylinder 218 extends into the circular groove 219 and can slide up and down along the circular groove 219 to ensure that the positioning cylinder 218 also has sufficient buffering space. When the buffer spring 217 is compressed, the positioning cylinder 218 can slide into the circular groove 219 without affecting the normal movement of the buffer spring 217.

[0050] Furthermore, the screening mechanism 3 also includes a screen 302 embedded in the middle of the screen frame 301. The upper part of the screen 302 is covered by a screening box 303. The side wall of the screening box 303 is provided with a feed inlet 304. The lower part of the screen 302 is provided with a guide hopper 305 fixedly connected to the screen frame 301. The bottom of the guide hopper 305 is provided with a discharge outlet 306.

[0051] Specifically, during the screening process, chemical materials are prone to dust generation due to the vibration of the screen frame 301. The screening box 303 is set up to cover the screen 302 to form a closed space. The material is fed only through the feed port 304 on the side wall, which can effectively prevent dust from spreading to the external environment, thus avoiding material waste and meeting the environmental protection and safety requirements of chemical production.

[0052] The screen 302 is embedded in the middle of the screen frame 301 and forms a rigid connection with the screen frame 301. When the screen frame 301 vibrates up and down with the vibration mechanism 2, the screen 302 can vibrate synchronously and stably, ensuring that the material is evenly stressed and fully dispersed on the surface of the screen 302.

[0053] After screening by screen 302, materials that meet the particle size requirements will fall naturally. The guide hopper 305 gathers the dispersed falling materials through the funnel-shaped structure, and then conveys them to the subsequent process through the bottom discharge port 306, so as to avoid the accumulation and blockage of materials under screen 302 and ensure that the screening process is continuous and uninterrupted.

[0054] Furthermore, the support mechanism 1 also includes pillars 102 fixedly mounted on the placement platform 101 and located on both sides of the screening mechanism 3. Support plates 103 are fixedly mounted on both pillars 102, and fixing blocks 104 are fixedly mounted on both support plates 103.

[0055] Specifically, the support column 102 is fixed on the placement platform 101 and located on both sides of the screening mechanism 3, forming a symmetrical vertical support structure. The support plate 103 is fixed on the support column 102, further raising the support point to a height that is compatible with the crushing mechanism 5 and the driving mechanism 4. The fixing block 104 fixed on the support plate 103 provides precise two-end installation positioning points for the bidirectional lead screw 403.

[0056] Furthermore, the drive mechanism 4 includes a second drive motor 401 fixedly mounted on a support plate 103. The output shaft of the second drive motor 401 is fixedly connected to a coupling 402. The other end of the coupling 402 is fixedly connected to a bidirectional lead screw 403. The two ends of the bidirectional lead screw 403 are respectively rotatably engaged with two fixed blocks 104. Two sliders 404 that mesh with the external threads of the lead screw are symmetrically mounted on the two sections of the bidirectional lead screw 403.

[0057] Specifically, the rotational engagement between the two ends of the bidirectional lead screw 403 and the fixed block 104 not only restricts the axial displacement of the lead screw but also ensures smooth rotation of the lead screw, reducing resistance loss in the power transmission process and improving drive efficiency.

[0058] The two sections of the bidirectional lead screw 403 are machined with external threads in opposite directions, one section with a right-handed external thread and the other with a left-handed external thread. When the lead screw rotates, the two sliders 404 that mesh with the two sections of threads will move symmetrically and synchronously in opposite directions along the axis of the lead screw, that is, they will move closer or farther away at the same time. The movement of the sliders 404 will drive the crushing rollers 505 connected to the lower part of the two sliders 404 to move synchronously from both sides of the screen 302 towards the middle or towards both sides, ensuring that the material on the surface of the screen 302 is crushed evenly and avoiding local material from being unprocessed.

[0059] The slider 404 serves as the connection point between the drive mechanism 4 and the crushing mechanism 5. The smooth sliding of the slider 404 along the screw can provide a stable moving trajectory for the crushing roller 505. In conjunction with the shock-absorbing spring 501 at the bottom of the slider 404, the rotational motion of the drive mechanism 4 can be converted into the linear crushing motion of the crushing roller 505.

[0060] Furthermore, the crushing mechanism 5 includes a shock-absorbing spring 501 fixedly installed at the lower part of the slider 404. A mounting plate 502 is fixedly installed at the end of the shock-absorbing spring 501 away from the slider 404. Guide cylinders 503 are sleeved at both ends of the shock-absorbing spring 501 and are fixedly connected to the slider 404 and the mounting plate 502 respectively.

[0061] Specifically, when the crushing roller 505 crushes agglomerated materials, it will be subjected to the reaction force of the materials, especially when facing hard agglomerated materials. The shock-absorbing spring 501 absorbs this impact force through its own elastic deformation, preventing the reaction force from being directly transmitted to transmission components such as the slider 404 and the two-way lead screw 403, effectively protecting the drive system and extending the service life of the equipment.

[0062] The guide cylinders 503 at both ends of the shock-absorbing spring 501 are fixed to the slider 404 and the mounting plate 502 respectively, forming a rigid constraint on the spring to prevent the spring from bending or tilting laterally during the extension and contraction process, and to ensure that the spring force is always transmitted in the vertical direction.

[0063] When the screen 302 vibrates and fluctuates slightly, the spring can automatically compensate for the height difference by extending and retracting, ensuring that the crushing roller 505 always maintains effective contact with the screen 302. For agglomerated materials with uneven thickness, the spring force will be automatically adjusted with the crushing depth. The thicker the agglomerated material, the greater the spring compression, which increases the crushing pressure accordingly, ensuring that the agglomerated material is fully crushed and avoiding excessive pressure on the screen 302.

[0064] Furthermore, a sliding groove 405 is provided on the top plate of the screening box 303, and a sliding frame 504 that can slide along the sliding groove 405 is fixedly provided on the lower part of the mounting plate 502. A crushing roller 505 that contacts the upper surface of the screen 302 is rotatably provided on the lower part of the sliding frame 504.

[0065] Specifically, the crushing roller 505 is rotatably mounted at the lower part of the sliding frame 504. When it comes into contact with the upper surface of the screen 302, the crushing roller 505 rotates due to the friction of the material, which can roll and crush the material. Compared with sliding friction, rolling and crushing greatly improves the crushing efficiency.

[0066] Vibration causes agglomerated materials to tumble and expose new surfaces, while the 505 crushing roller moves synchronously to crush them, achieving a synergistic effect of vibration dispersion and rolling crushing, which greatly improves the pretreatment efficiency of easily agglomerated chemical materials.

[0067] The working process for this application is as follows:

[0068] (1) After the device is started, the first drive motor 202 and the second drive motor 401 run synchronously; the vibration mechanism 2 causes the screen frame 301 and the screen mesh 302 to start high-frequency up and down vibration through the linkage of the transmission shaft 205, the eccentric protrusion and the transmission rod 208; the drive mechanism 4 drives the two sliders 404 to make symmetrical reciprocating motion in the horizontal direction through the bidirectional screw 403, and the crushing roller 505 moves synchronously with the sliding frame 504 along the sliding groove 405 on the top plate of the screening box 303.

[0069] (2) The chemical material to be screened is fed into the feed port 304 on the side wall of the screening box 303 and falls onto the upper surface of the screen 302; the crushing roller 505, which moves with the slider 404, makes horizontal reciprocating motion on the upper surface of the screen 302 to roll and crush the lumpy material on the screen 302.

[0070] (3) The crushed bulk material is fully dispersed under the high-frequency vibration of the screen 302. The material with a particle size smaller than the aperture of the screen 302 passes through the screen hole and falls into the guide hopper 305 below. The large particles that are not completely crushed continue to remain on the surface of the screen 302 and are crushed a second time by the reciprocating crushing roller 505 until they meet the particle size requirements.

[0071] (4) The guide hopper 305 gathers the qualified material that has passed through the screen 302 and conveys it to the subsequent process through the bottom discharge port 306.

[0072] The above describes the basic principles, main features, and advantages of this utility model. The standard parts used in this utility model can all be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, which will not be described in detail here.

[0073] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0074] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0075] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A material screening device for chemical production, comprising a support mechanism (1), wherein the support mechanism (1) includes a horizontally arranged placement platform (101), characterized in that: A vibration mechanism (2) is fixedly installed on the placement platform (101), a screening mechanism (3) is installed above the vibration mechanism (2), a crushing mechanism (5) is installed above the screening mechanism (3), and a drive mechanism (4) for controlling the movement of the crushing mechanism (5) is installed above the crushing mechanism (5).

2. The material screening device for chemical production according to claim 1, characterized in that: The vibration mechanism (2) includes a positioning block (201) fixedly mounted on a placement platform (101) and a first drive motor (202). The positioning block (201) has a through hole in the horizontal direction, and a groove (204) is provided in the middle of the positioning block (201) to divide the through hole into two sections. A drive shaft (205) is rotatably mounted in each section of the through hole. The two drive shafts (205) extend to the groove (204) at opposite ends, and a first protrusion (206) and a second protrusion (207) are respectively eccentrically fixed. A drive rod (208) is rotatably connected between the first protrusion (206) and the second protrusion (207). The end of one drive shaft (205) away from the groove (204) is fixedly connected to the output end of the first drive motor (202).

3. The material screening device for chemical production according to claim 2, characterized in that: The screening mechanism (3) includes a screen frame (301), and the vibration mechanism (2) further includes a horizontally arranged transmission plate (209) and a transmission column (215) arranged on the upper part of the transmission plate (209) and fixedly connected to the bottom surface of the screen frame (301) at its top. Side plates (212) are fixedly arranged on both sides of the transmission plate (209), and the other end of the transmission rod (208) is rotatably connected to the side plate (212).

4. A material screening device for chemical production according to claim 3, characterized in that: A buffer spring (217) is symmetrically fixed on the positioning blocks (201) on both sides of the groove (204). The end of the buffer spring (217) away from the positioning block (201) is fixedly connected to the bottom surface of the screen frame (301). A positioning cylinder (218) that is sleeved on the outer periphery of the buffer spring (217) is also fixedly installed on the bottom surface of the screen frame (301).

5. A material screening device for chemical production according to claim 4, characterized in that: The positioning block (201) has a through circular groove (219) at the position corresponding to the positioning cylinder (218). The positioning cylinder (218) extends into the circular groove (219) and can slide up and down along the circular groove (219).

6. A material screening device for chemical production according to claim 5, characterized in that: The screening mechanism (3) also includes a screen (302) embedded in the middle of the screen frame (301), a screening box (303) covering the upper part of the screen (302), a feed inlet (304) opening on the side wall of the screening box (303), a guide hopper (305) fixedly connected to the screen frame (301) below the screen (302), and a discharge port (306) opening at the bottom of the guide hopper (305).

7. A material screening device for chemical production according to claim 6, characterized in that: The support mechanism (1) further includes pillars (102) fixedly mounted on the placement platform (101) and located on both sides of the screening mechanism (3). Support plates (103) are fixedly mounted on both pillars (102), and fixing blocks (104) are fixedly mounted on both support plates (103).

8. A material screening device for chemical production according to claim 7, characterized in that: The drive mechanism (4) includes a second drive motor (401) fixedly mounted on a support plate (103). The output shaft of the second drive motor (401) is fixedly connected to a coupling (402). The other end of the coupling (402) is fixedly connected to a bidirectional lead screw (403). The two ends of the bidirectional lead screw (403) are respectively rotatably engaged with two fixed blocks (104). Two sliders (404) that mesh with the external threads of the lead screw are symmetrically mounted on the two sections of the bidirectional lead screw (403).

9. A material screening device for chemical production according to claim 8, characterized in that: The crushing mechanism (5) includes a shock-absorbing spring (501) fixedly installed at the bottom of the slider (404). The end of the shock-absorbing spring (501) away from the slider (404) is fixedly provided with a mounting plate (502). Both ends of the shock-absorbing spring (501) are fitted with guide cylinders (503) which are fixedly connected to the slider (404) and the mounting plate (502) respectively.

10. A material screening device for chemical production according to claim 9, characterized in that: The top plate of the screening box (303) is provided with a sliding groove (405), and the lower part of the mounting plate (502) is fixedly provided with a sliding frame (504) that can slide along the sliding groove (405). The lower part of the sliding frame (504) is rotatably provided with a crushing roller (505) that contacts the upper surface of the screen (302).

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