Powdered food screening device

Abstract

A powdered food screening device relates to the field of material screening, comprising: a slide rail with a support frame provided above; a screening mechanism comprising a screen frame provided in the support frame and reciprocatingly vibrating, a screen mesh moving vertically provided in the screen frame, a material collection frame provided at the lower end of the screen frame, two baffles symmetrically arranged and moving along its width direction provided at the bottom of the material collection frame, a plurality of rotating blocks spaced apart along its length direction and rotating around its own axis provided above the screen mesh, the rotating blocks moving along the width direction of the screen mesh, and a plurality of beating rods provided along its circumferential direction; a supporting mechanism comprising two supporting plates provided above the slide rail and moving along its length direction and vertical direction, a transfer vehicle provided in the supporting plate, wherein when the upper end of one of the transfer vehicles is located in the support frame, there is a spacing between the baffles, and when the transfer vehicle is located outside the support frame, the baffles contact each other and close the bottom of the material collection frame. This device can perform screening operations uninterruptedly, is more convenient, and improves screening efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of material screening, and in particular to a powdered food screening device. Background Art

[0002] In the food processing industry, a large amount of powdered food raw materials are used, such as flour, starch, baking soda, etc. In order to facilitate storage, powdered food raw materials are usually packaged in woven bags. In order to produce more quickly, the packaging bags are usually cut directly, but this may also cause impurities to be mixed into the powdered food raw materials. In order to ensure the safety of food, it is necessary to screen them to reduce the possibility of impurities in the food.

[0003] In the prior art, when screening powdered food raw materials, a vibrating screen is usually placed directly on the upper end of the transfer vehicle, and screening is performed by vibration. The transfer vehicle will move during the screening process due to the transmission of vibration. At this time, workers are required to manually limit the transfer vehicle to prevent it from moving arbitrarily, but this will put the workers' bodies in a vibrating state, which may cause damage to the workers' bodies; and after a certain amount of powdered food raw materials are loaded on the transfer vehicle, the screen needs to be removed in time and placed on another transfer vehicle, which is not only inconvenient to operate, but also affects the screening efficiency; and powdered food raw materials are usually stacked when stored. After a long period of storage, the powdered raw materials may be compressed into blocks. During the screening process, it is difficult to completely break up the powdered raw materials by vibration alone, or it takes a long time to completely break up the powdered raw materials, which also affects the screening efficiency. Summary of the Invention

[0004] In response to the above-mentioned deficiencies in the related prior art, the present application provides a powdered food screening device that can perform screening operations uninterruptedly, is more convenient, improves screening efficiency, and has strong practicality.

[0005] In order to achieve the above object, the present invention adopts the following technologies:

[0006] A powdered food screening device comprises a slide rail, a screening mechanism, and a bearing mechanism.

[0007] A support frame is provided above the slide rail; the screening mechanism includes a screen frame provided in the support frame and reciprocatingly vibrating, a screen mesh movable in the vertical direction is provided in the screen frame, a collection frame is provided at the lower end of the screen frame, and two baffles symmetrically arranged and movable along its width direction are provided at the bottom of the collection frame, a plurality of rotating blocks arranged at intervals along its length direction and rotating around its own axis are provided above the screen mesh, the rotating blocks are movable along the width direction of the screen mesh, and a plurality of beating rods are provided on the outer wall along its own circumferential direction; the bearing mechanism includes two bearing plates provided above the slide rail and movable along its length direction and vertical direction, a transfer cart is provided in the bearing plate, when the upper end of one of the transfer carts is located in the support frame, there is a spacing between the baffles, and when the transfer cart is located outside the support frame, the baffles contact each other and close the bottom of the aggregate frame.

[0008] Furthermore, brackets are provided on both sides of the top of the screen, the brackets are mounted on the vertical rod, the lower end of the vertical rod is installed on the protrusion, the protrusion is installed on the side wall of the screen frame, and a first spring is mounted on the vertical rod. The two ends of the first spring respectively abut against the bracket and the protrusion, and are always in a compressed state. A retaining ring is provided at the upper end of the vertical rod for abutting against the bracket.

[0009] Furthermore, the rotating block is installed on the rotating shaft, and the two ends of the rotating shaft are rotatably installed on the movable frame. The movable frame is connected to the movable end of the horizontal linear mechanism. The horizontal linear mechanism is installed on the support frame and arranged along its width direction. Shaking blocks are installed at both ends of the rotating shaft. The lowest point of the shaking block is flush with the top surface of the screen. The side wall of the shaking block is provided with multiple spaced top blocks along its circumferential direction for pushing the screen.

[0010] Furthermore, the rotating shaft is transmitted to the first transmission shaft through a transmission mechanism, and both ends of the first transmission shaft are rotatably mounted on the mobile frame. Both ends of the first transmission shaft are equipped with driven gears, which are engaged with the first gear plate, and the first gear plate is mounted on the support frame.

[0011] Furthermore, both ends of the baffle are sleeved on the sliding rod, the sliding rod is installed on the support frame, both ends of the support frame are sleeved on the guide rod, the guide rod is installed inside the support frame, and both ends of the guide rod are sleeved with a second spring, and the two ends of the second spring respectively abut against the support frame and the support frame, and are always in a compressed state, and a block is provided on the guide rod for abutting against the support frame.

[0012] Furthermore, a U-shaped portion is provided on the top surface of the baffle, the lower end of the material collection frame is located in the U-shaped portion, and two sides of the material collection frame cooperate with two inner side walls of the U-shaped portion.

[0013] Furthermore, protrusions are provided on both sides of the top of the transfer vehicle, and the protrusions are trapezoidal. When the upper end of the transfer vehicle is located inside the support frame, both sides of the protrusions are in contact with the inner side of the support frame.

[0014] Furthermore, the load-bearing plate is U-shaped, and a limit plate is provided on the top surface. The limit plate is U-shaped, and the transfer vehicle is fitted in the limit plate. When in use, the load-bearing plate is placed on the support plate, and the two sides of the support plate slide and fit on the slide rail. A partition is provided on the top surface of the support plate, and the partition is I-shaped. The load-bearing plate fits in the partition, and limit strips are provided at both ends of the partition for limiting the end of the load-bearing plate.

[0015] Furthermore, two side plates are provided on both sides of the bearing plate, and positioning holes are provided on the side surfaces of the side plates. When in use, a card block is passed through the positioning hole, and the bottom surface and inner side of the card block are arc-shaped, and the outer end is connected to the push rod. The push rod is passed through the concave plate, and a thrust plate and a third spring are provided on the push rod. The thrust plate and the third spring are both located on the inner side of the concave plate, and the two ends of the third spring respectively abut against the inner wall of the end of the concave plate away from the bearing plate and the thrust plate, and are always in a compressed state. The concave plate is connected to the movable plate, and the movable plate is sleeved on the cross bar and connected to the movable end of the two-way linear mechanism. The cross bar and the two-way linear mechanism are both installed on the base frame, and the base frame is installed on the outside of the slide rail.

[0016] Furthermore, a second gear plate is provided on both sides of the carrier plate. When in use, the second gear plate engages with the driving gear, and the driving gear is installed on the second transmission shaft. The second transmission shaft is rotatably installed on the base frame, and one end is connected to the output end of the power equipment, and the power equipment is installed on the base frame.

[0017] Furthermore, a plurality of vertically arranged positioning rods are provided at both ends of the support frame, and a plurality of support plates are provided on the side walls at both ends of the transfer vehicle. A clamping ring is provided at the end of the support plate. The clamping ring is trumpet-shaped, and the end with a larger diameter is located at the top. When in use, the positioning rod is passed through the clamping ring, and the minimum inner diameter of the clamping ring is the same as the diameter of the positioning rod.

[0018] The beneficial effects of the present invention are as follows: powdered food raw materials are screened by vibration, and the lower end of the aggregate frame can be automatically closed during the transfer of the transfer vehicle to prevent the raw materials from spilling, thereby facilitating the transfer of the transfer vehicle, and thus being able to perform screening operations uninterruptedly, thereby improving screening efficiency, and eliminating the need to transfer the vibrating screen, making operation more convenient; the transfer vehicle is positioned during the screening process to prevent it from falling due to vibration; a rotating beating rod is provided on the screen to break up the powdered raw materials that have clumps on the screen, thereby further improving screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0020] Figure 1 It is a schematic three-dimensional diagram of the overall structure of an embodiment of the present application.

[0021] Figure 2This is a three-dimensional schematic diagram of the screening mechanism of an embodiment of the present application.

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the screening mechanism of an embodiment of the present application.

[0023] Figure 4 This is a schematic three-dimensional diagram of the cross-sectional structure of a screening mechanism according to an embodiment of the present application at one angle.

[0024] Figure 5 This is a three-dimensional schematic diagram of the cross-sectional structure of the screening mechanism of an embodiment of the present application from another angle.

[0025] Figure 6 This is a schematic diagram of the screen installation embodiment of the present application.

[0026] Figure 7 This is a three-dimensional schematic diagram of the supporting mechanism of an embodiment of the present application.

[0027] Figure 8 This is a schematic diagram of the installation of the carrier plate according to an embodiment of the present application.

[0028] Figure 9 This is a schematic cross-sectional structure diagram of the transfer vehicle according to an embodiment of the present application fitted in a support frame.

[0029] Explanation of reference numerals: 100 - slide rail, 200 - screening mechanism, 300 - bearing mechanism, 101 - support frame, 102 - positioning rod, 201 - screen frame, 202 - screen mesh, 203 - aggregate frame, 204 - baffle, 205 - bracket, 206 - vertical rod, 207 - bump, 208 - first spring, 209 - retaining ring, 210 - rotating block, 211 - beating rod, 212 - rotating shaft, 213 - moving frame, 214 - shaking block, 215 - top block, 216 - first transmission shaft, 217 - driven gear, 218 - first tooth plate, 219 - slide rod, 220 - support frame, 2 21—guide rod, 222—second spring, 223—stop block, 224—U-shaped portion, 301—carrying plate, 302—transfer cart, 303—protrusion, 304—limiting plate, 305—support plate, 306—partition plate, 307—limiting strip, 308—side plate, 309—positioning hole, 310—block, 311—top rod, 312—concave plate, 313—thrust plate, 314—third spring, 315—moving plate, 316—cross bar, 317—base frame, 318—second gear plate, 319—driving gear, 320—second transmission shaft, 321—support plate, 322—circuit ring. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figures 1 to 9 As shown, an embodiment of the present application provides a powdered food screening device, including: a slide rail 100, a screening mechanism 200, and a supporting mechanism 300.

[0032] A support frame 101 is provided above the slide rail 100; the screening mechanism 200 includes a screen frame 201 provided in the support frame 101 and reciprocatingly vibrating, a screen 202 movable in the vertical direction is provided in the screen frame 201, and the powdered food is screened by vibration, and a collection frame 203 is provided at the lower end of the screen frame 201, the collection frame 203 is trumpet-shaped, and the large end is located at the top, so that the powdered food after screening is concentrated for easy collection, and the bottom of the collection frame 203 is provided with two symmetrically arranged baffles 204 movable along the width direction thereof, so that the lower end of the collection frame 203 can be closed to prevent the powdered food from being scattered arbitrarily, and a plurality of rotating blocks 21 arranged at intervals along the length direction thereof and rotating around their own axes are provided above the screen 202. 0, the rotating block 210 is arranged to move along the width direction of the screen 202, and the outer wall is provided with a plurality of beating rods 211 along its own circumferential direction, so that the food in blocks can be broken up and the screening efficiency is improved; the supporting mechanism 300 includes two supporting plates 301 provided above the slide rail 100 and movable along its length direction and vertical direction, and a transfer cart 302 is provided in the supporting plate 301. When the upper end of one of the transfer carts 302 is located in the support frame 101, there is a spacing between the baffles 204, so that the bottom of the aggregate frame 203 is in an open state, so that the transfer cart 302 can collect the powdered raw materials after screening, and when the transfer cart 302 is located outside the support frame 101, the baffles 204 contact each other and close the bottom of the aggregate frame 203 to prevent the powdered food from spilling arbitrarily.

[0033] Specifically, if Figure 1-Figure 2 、 Figure 6As shown, brackets 205 are provided on both sides of the top of the screen 202, and the brackets 205 are sleeved on the vertical rod 206. The lower end of the vertical rod 206 is installed on the protrusion 207, and the protrusion 207 is installed on the side wall of the screen frame 201. A first spring 208 is sleeved on the vertical rod 206, and the two ends of the first spring 208 are respectively abutted against the bracket 205 and the protrusion 207, and are always in a compressed state. A retaining ring 209 is provided on the upper end of the vertical rod 206 for abutting against the bracket 205. Under the action of the first spring 208, the screen 202 always has a tendency to move upward. During the screening process, a downward force is intermittently applied to the screen 202, and under the joint action of the first spring 208, the screen 202 moves back and forth in the vertical direction, thereby generating a vibration effect, so as to further apply force to the powdered food, thereby improving the screening efficiency.

[0034] Specifically, if Figure 2-Figure 4 As shown, the rotating block 210 is installed on the rotating shaft 212, and the two ends of the rotating shaft 212 are rotatably installed on the moving frame 213. The moving frame 213 is connected to the moving end of the horizontal linear mechanism. The horizontal linear mechanism is installed on the support frame 101 and arranged along its width direction. Shaking blocks 214 are installed at both ends of the rotating shaft 212. The lowest point of the shaking block 214 is flush with the top surface of the screen 202. The side wall of the shaking block 214 is provided with a plurality of spaced top blocks 215 along its circumferential direction for pushing the screen 202. When the shaking block 214 rotates, the top block 215 will intermittently contact the screen 202, thereby forcing the screen 202 to move up and down. When performing screening operations, the moving frame 213 is driven by the horizontal linear mechanism to move along the width direction of the support frame 101, and the rotating shaft 212 is driven to move synchronously. At this time, the rotating shaft 212 is synchronously driven to rotate around its own axis, thereby forcing the screen 202 to move up and down.

[0035] Specifically, if Figure 2 As shown, the rotating shaft 212 is transmitted to the first transmission shaft 216 through a transmission mechanism, such as a transmission structure of a pulley and a pulley, or a transmission structure of a chain and a sprocket, and a shell is set on the mobile frame 213 to seal the transmission mechanism to avoid affecting the normal transmission of the transmission mechanism. Both ends of the first transmission shaft 216 are rotatably mounted on the mobile frame 213, and both ends of the first transmission shaft 216 are equipped with driven gears 217, which are engaged with the first tooth plate 218. The first tooth plate 218 is mounted on the support frame 101. In the process of the mobile frame 213 moving along the width direction of the support frame 101, under the restriction of the first tooth plate 218, the driven gear 217 will be forced to rotate, thereby driving the first transmission shaft 216 to rotate, and under the power transmission of the transmission mechanism, the rotating shaft 212 will also be driven to rotate synchronously, so that the horizontal movement of the mobile frame 213 and the rotation of the rotating shaft 212 can be achieved by one power source.

[0036] Specifically, if Figure 3-Figure 5 As shown, both ends of the baffle 204 are sleeved on the slide bar 219, the slide bar 219 is installed on the support frame 220, and both ends of the support frame 220 are sleeved on the guide rod 221, the guide rod 221 is installed inside the support frame 101, and both ends of the guide rod 221 are sleeved with a second spring 222, and the two ends of the second spring 222 are respectively abutted against the support frame 220 and the support frame 101, and are always in a compressed state. A stopper 223 is provided on the guide rod 221 for abutting against the support frame 220. When the support frame 220 abuts against the stopper 223, the two baffles 204 contact each other, thereby The lower end of 203 is closed to prevent the powdered food after screening from spilling. When the powdered food after screening needs to be collected, it is only necessary to apply an opposite force to the support frame 220 to make the support frames 220 move away from each other, and drive the baffles 204 to move away from each other synchronously. At this time, the second spring 222 is further compressed, thereby opening the lower end of the collection frame 203, allowing the powdered food to fall. When the lower end of the collection frame 203 needs to be closed, it is only necessary to release the force applied to the support frame 220, and the baffles 204 will automatically move closer to each other under the force of the second spring 222.

[0037] Specifically, if Figure 4 As shown, the top surface of the baffle 204 contacts the bottom of the aggregate frame 203, and a U-shaped portion 224 is provided on the top surface. The lower end of the aggregate frame 203 is located in the U-shaped portion 224, and the two sides of the aggregate frame 203 cooperate with the two inner side walls of the U-shaped portion 224, so that in the process of the aggregate frame 203 following the reciprocating vibration of the screen frame 201, the baffle 204 can also synchronously follow the reciprocating movement of the aggregate frame 203, thereby ensuring the sealing effect of the lower end of the aggregate frame 203, and when the two baffles 204 move away from each other, the powdered food accumulated on the baffle 204 will also fall down under the scraping of the aggregate frame 203.

[0038] Specifically, if Figure 7 As shown, both sides of the top of the transfer cart 302 are provided with protrusions 303, and the protrusions 303 are trapezoidal. When the transfer cart 302 moves upward to the support frame 101, the two sides of the protrusions 303 will respectively contact the inner side of a support frame 220. As the transfer cart 302 continues to move upward, it will also continue to transmit a force to the support frame 220 to move away from each other, thereby forcing the two baffles 204 to also move away from each other, and then open the lower end of the aggregate frame 203, so that the screened powdered food can fall into the transfer cart 302.

[0039] Specifically, if Figure 1 、 Figure 8-Figure 9As shown, the carrying plate 301 is U-shaped, so that the transfer vehicle 302 can be moved into the carrying plate 301, and the top surface of the carrying plate 301 is provided with a limit plate 304, which is U-shaped, and the transfer vehicle 302 is matched with the limit plate 304 to limit the circumference of the transfer vehicle 302. When the transfer vehicle 302 does not move upward, the carrying plate 301 is placed on the support plate 305, and the two sides of the support plate 305 are slidably matched on the slide rail 100. The top surface of the support plate 305 is provided with a partition 306, and the partition 306 is I-shaped. The carrying plate 301 is matched with the partition 306, and both ends of the partition 306 are provided with a limit bar 307. In order to limit the end of the supporting plate 301 and prevent the supporting plate 301 from shifting, when transferring the transfer cart 302, the transfer cart 302 is first pushed in from the mouth of the supporting plate 301, and as the transfer cart 302 is continuously pushed, the supporting plate 301 will be forced to drive the support plate 305 to move along the length direction of the slide rail 100 until the support plate 305 moves to one end of the slide rail 100. At this time, one of the transfer carts 302 is directly below the support frame 101. At this time, moving the supporting plate 301 upward can drive the transfer cart 302 to move upward, so that the upper end of the transfer cart 302 is located in the support frame 101.

[0040] Specifically, if Figure 1 、 Figure 8-Figure 9As shown, two side plates 308 are provided on both sides of the carrying plate 301, and positioning holes 309 are provided on the side surfaces of the side plates 308. When the upper end of the transfer vehicle 302 is located in the support frame 101, a clamping block 310 is passed through the positioning hole 309. The clamping block 310 provides a vertical limit for the carrying plate 301 to prevent it from falling due to vibration. The bottom surface and inner side of the clamping block 310 are both arc-shaped, and the outer end is connected to the top rod 311. The top rod 311 is passed through the concave plate 312, and a thrust plate 313 and a third spring 314 are provided on the top rod 311. The thrust plate 313 and the third spring 314 are both located on the inner side of the concave plate 312. The two ends of the third spring 314 are respectively against the inner wall of the concave plate 312 away from the bearing plate 301 and the thrust plate 313, and are always in a compressed state. The concave plate 312 is connected to the movable plate 315, and the movable plate 315 is sleeved on the cross bar 316 and connected to the movable end of the bidirectional linear mechanism. The cross bar 316 and the bidirectional linear mechanism are both mounted on the base frame 317, and the base frame 317 is mounted on the outside of the slide rail 100. When the bearing plate 301 is moved upward During the movement, the side plate 308 will contact the arc-shaped portion of the block 310, and as the supporting plate 301 continues to move upward, the block 310 will be forced to move, and the third spring 314 will be further compressed until the supporting plate 301 moves to the highest point of its stroke. At this time, the block 310 will move back under the action of the third spring 314 and enter the positioning hole 309 to achieve the positioning of the supporting plate 301. When the supporting plate 301 needs to be moved downward, the limit of the supporting plate 301 needs to be released. At this time, the two concave plates 312 are driven to approach each other through the bidirectional linear mechanism. At this time, the arc surface on the inner side of the block 310 will contact the edge of the positioning hole 309. As a result, in the process of the blocks 310 approaching each other, they will also move in the direction away from the transfer vehicle 302 until the blocks 310 are completely removed from the positioning hole 309 and are located on the inner side of the side plate 308. At this time, the supporting plate 301 can be driven to move downward. After the supporting plate 301 moves downward and resets, the two blocks 310 can be driven to reset again through the bidirectional linear mechanism.

[0041] Specifically, if Figure 1 、 Figure 8-Figure 9 As shown, a second tooth plate 318 is provided on both sides of the carrier plate 301. When one of the transfer vehicles 302 is located directly below the support frame 101, the second tooth plate 318 engages with the driving gear 319. The driving gear 319 is mounted on the second transmission shaft 320. The second transmission shaft 320 is rotatably mounted on the base frame 317, and one end is connected to the output end of the power equipment. The power equipment is mounted on the base frame 317. When it is necessary to drive the carrier plate 301 up and down, the second transmission shaft 320 is driven by the power equipment to rotate, driving the driving gear 319 to rotate. Then, under the engagement of the second tooth plate 318 and the driving gear 319, the carrier plate 301 will also be driven to move up and down.

[0042] Specifically, if Figure 7 As shown, during the screening process, the vibration of the screen frame 201 will be transmitted to the support frame 101, and the transfer vehicle 302 may not be able to enter the support frame 101 smoothly, or it may also cause the upward movement of the transfer vehicle 302 to fail to push the two baffles 204 open smoothly. A plurality of vertically arranged positioning rods 102 are provided at both ends of the support frame 101, and the positioning rods 102 provide guidance for the movement of the transfer vehicle 302, and a plurality of support plates 321 are provided on the side walls at both ends of the transfer vehicle 302, and a snap ring 322 is provided at the end of the support plate 321. The snap ring 322 is trumpet-shaped, and the end with a larger diameter is located at Above, the minimum inner diameter of the retaining ring 322 is the same as the diameter of the positioning rod 102. During the upward movement of the transfer cart 302, the positioning rod 102 will be inserted into the retaining ring 322, and as the transfer cart 302 continues to move upward, the positioning rod 102 is gradually restricted by the inner wall of the retaining ring 322, so that the side wall of the positioning rod 102 contacts the part with the smallest inner diameter of the retaining ring 322, ensuring that the transfer cart 302 can smoothly enter the support frame 101 and can smoothly contact the support frame 220. Then, as the transfer cart 302 continues to move upward, the baffle 204 can be pushed open.

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A powdered food screening device, characterized in that: include: A slide rail with a support frame on top; The screening mechanism comprises a reciprocatingly vibrating screen frame provided in the support frame, a screen mesh movable in the vertical direction provided in the screen frame, a material collection frame provided at the lower end of the screen frame, two symmetrically arranged baffles movable along the width direction of the material collection frame provided at the bottom of the material collection frame, a plurality of rotating blocks spaced apart along the length direction of the material collection frame and rotating around their own axes provided above the screen mesh, the rotating blocks movable along the width direction of the screen mesh, and a plurality of beating rods provided on the outer wall along its own circumferential direction; The bearing mechanism includes two bearing plates arranged above the slide rail and movable along the longitudinal direction and the vertical direction thereof, wherein a transfer trolley is provided on the bearing plate. When the upper end of one of the transfer trolleys is located in the support frame, there is a gap between the baffles. When the transfer trolley is located outside the support frame, the baffles contact each other and close the bottom of the aggregate frame. Both ends of the baffle are sleeved on the sliding rod, the sliding rod is installed on the support frame, both ends of the support frame are sleeved on the guide rod, the guide rod is installed inside the support frame, and both ends of the guide rod are sleeved with a second spring, the two ends of the second spring respectively abut against the support frame and the support frame, and are always in a compressed state, and a stopper is provided on the guide rod for abutting against the support frame; The top surface of the baffle is provided with a U-shaped portion, the lower end of the material collection frame is located in the U-shaped portion, and the two sides of the material collection frame are matched with the two inner side walls of the U-shaped portion; The top end face of said sliding panel also is provided with an interlock plate, and the interlock plate is fixed with a backing pin of said sliding panel and a backing pin of said sliding panel, and said interlock plate is fixed with a backing pin of said interlock plate. A plurality of vertically arranged positioning rods are provided at both ends of the support frame, and a plurality of support plates are provided on the side walls at both ends of the transfer vehicle. A clamping ring is provided at the end of the support plate. The clamping ring is trumpet-shaped, and the end with a larger diameter is located at the top. When in use, the positioning rod is passed through the clamping ring, and the minimum inner diameter of the clamping ring is the same as the diameter of the positioning rod.

2. The powdered food screening device according to claim 1, characterized in that: Brackets are provided on both sides of the top of the screen, the brackets are mounted on the vertical rod, the lower end of the vertical rod is installed on the protrusion, the protrusion is installed on the side wall of the screen frame, and a first spring is mounted on the vertical rod. The two ends of the first spring respectively abut against the bracket and the protrusion and are always in a compressed state. A retaining ring is provided on the upper end of the vertical rod for abutting against the bracket.

3. The powdered food screening device according to claim 1, characterized in that: The rotating block is installed on the rotating shaft, and both ends of the rotating shaft are rotatably installed on the movable frame. The movable frame is connected to the movable end of the horizontal linear mechanism. The horizontal linear mechanism is installed on the support frame and arranged along its width direction. Shaking blocks are installed at both ends of the rotating shaft. The lowest point of the shaking block is flush with the top surface of the screen. The side wall of the shaking block is provided with a plurality of spaced top blocks along its circumferential direction for pushing the screen.

4. The powdered food screening device according to claim 3, characterized in that: The rotating shaft is transmitted to the first transmission shaft through a transmission mechanism. Both ends of the first transmission shaft are rotatably mounted on the movable frame. Both ends of the first transmission shaft are equipped with driven gears. The driven gears are engaged with the first gear plate. The first gear plate is mounted on the support frame.

5. The powdered food screening device according to claim 1, characterized in that: The supporting plate is U-shaped and has a limit plate on the top surface. The limit plate is U-shaped, and the transfer vehicle fits in the limit plate. When in use, the supporting plate is placed on the support plate, and the two sides of the support plate slide and fit on the slide rail. A partition is provided on the top surface of the support plate, and the partition is I-shaped. The supporting plate fits in the partition, and limit strips are provided at both ends of the partition for limiting the end of the supporting plate.

6. The powdered food screening device according to claim 1, characterized in that: A second tooth plate is provided on both sides of the carrier plate. When in use, the second tooth plate engages with the driving gear. The driving gear is installed on the second transmission shaft. The second transmission shaft is rotatably installed on the base frame, and one end is connected to the output end of the power equipment. The power equipment is installed on the base frame.

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