A zinc oxide screening and loading device and method

Abstract

This invention relates to the technical field of zinc oxide loading equipment, specifically to a zinc oxide screening and loading device and method. The device involves screening and discharging material through a screening tank, with the discharge port connected to a discharge chute within the loading tank. Initially, the chute is secured to a bag-receiving arm by a limiting component, keeping the discharge end closed. When a bag is picked up by a sliding bag-receiving arm and slides above the bag-receiving arm, the limiting component disengages from the arm. The end of the sliding plate near the discharge chute rotates downwards, and simultaneously, a suction cup adheres to the bottom opening of the bag, allowing the bag opening to fit over the discharge end of the chute. The material is automatically loaded into the bag along the inclined bottom wall of the chute. This causes the end of the sliding plate near the bag box to rotate downwards, and the bag slides down the sliding plate, allowing the sealing component to seal the bag. This achieves automatic screening, bagging, and sealing, solving the problems of low efficiency and high safety requirements in existing zinc oxide screening and loading operations.

Description

Technical Field

[0001] This invention relates to the field of zinc oxide loading equipment, and more particularly to a zinc oxide screening and loading device and method. Background Technology

[0002] In the preparation of zinc oxide materials, considering the toxicity of its components, special care must be taken, especially during the loading, storage, and transportation processes. Generally, sealed bags are used for loading, and then the sealed bags are placed into drums. This facilitates storage and transportation while minimizing the leakage or diffusion of zinc oxide powder into the air. Therefore, in the prior art, in the preparation of zinc oxide materials through screening and loading, a layered loading device for zinc oxide, as disclosed in CN110124977A, can be used. Specifically, it includes a feeding mechanism and a receiving hopper. The receiving hopper is installed on the ground via a support frame, and the bottom of the receiving hopper is open... The device has a first discharge port located above the feeding mechanism. Inside the receiving hopper, multiple circular filter screens with the same inner diameter as the hopper are installed at an angle for sieving. The sieved material is then conveyed and packaged by the feeding mechanism. However, the sieving and loading processes are separated and independent, resulting in prolonged exposure of the zinc oxide material during the intermediate feeding process. A small amount of zinc oxide powder diffuses into the air and can be inhaled by workers, posing a safety hazard and requiring higher-level safety protection measures. This also hinders the efficient sieving and loading of zinc oxide material. Summary of the Invention

[0003] In view of this, the purpose of this invention is to provide a zinc oxide screening and loading device and method to solve the problems of low efficiency and high safety requirements in the existing zinc oxide screening and loading operations.

[0004] To achieve the above objectives, the present invention provides a zinc oxide screening and loading device, comprising a screening tank for screening zinc oxide material, and a loading tank for collecting and bagging the screened material connected to one side of the screening tank.

[0005] The screening tank has a feed inlet at the top and a discharge outlet at the bottom. Inside the tank, a discharge chute is connected to the discharge outlet on one side. The discharge chute includes an upper wall fixed to the side of the tank and a bottom wall rotatably connected to the side of the tank. The feed end of the discharge chute is connected to the discharge outlet. In the initial state, the bottom wall of the chute rotates and abuts against the upper wall of the chute so that the discharge end of the discharge chute is closed.

[0006] The filling tank is equipped with a bag box containing stacked packaging bags. A bag-picking arm is slidably mounted on the top of the filling tank, and an upper suction cup is connected to the bottom of the bag-picking arm. A sliding plate is rotatably connected between the discharge chute and the bag box inside the filling tank. One end of the sliding plate abuts against the bottom of the chute wall. A bag-receiving arm is connected to the end of the sliding plate near the discharge chute, and a lower suction cup is connected to the top of the bag-receiving arm. A sealing component is provided at the end of the sliding plate near the bag box.

[0007] The filling tank is equipped with a limiting component. In the initial state, the limiting component is engaged with the bag receiving arm. When the bag is picked up by sliding the bag picking arm and moves above the bag receiving arm, the limiting component is triggered to disengage from the bag receiving arm, so that the end of the slide plate near the discharge slide rotates downward. The lower suction cup adsorbs the bottom opening of the packaging bag and rotates downward. At the same time, the bottom wall of the slide rotates downward so that the opening of the packaging bag is fitted onto the discharge end of the discharge slide. As the packaging bag is filled with material, the end of the slide plate near the bag box rotates downward, and the packaging bag slides down the slide plate so that the sealing component can seal it.

[0008] Preferably, multiple screens are arranged at intervals from top to bottom inside the screening tank. The screens are inclined inside the screening tank, and the discharge port is located at the downward inclined end of the lowest screen.

[0009] Preferably, the top of the loading tank is provided with a waste tank, and the side of the waste tank is connected to the screening tank to receive the waste filtered out by the upper screen.

[0010] Preferably, the end of the slide plate near the discharge slide is provided with a horizontal slide, and the bottom end of the bag receiving arm slides into the side end of the horizontal slide. In the initial state, the bag receiving arm slides to the end of the horizontal slide near the bag box. When the end of the slide plate near the discharge slide rotates downward, the bag receiving arm slides down along the horizontal slide at an angle.

[0011] Preferably, the limiting component includes a vertical connecting rod elastically connected to the side end of the filling tank. The upper and lower ends of the vertical connecting rod are respectively fixedly connected to an upper pin and a lower pin. A first pin hole is opened on the side wall of the filling tank for the upper pin and the lower pin to pass through. A second pin hole is opened on the side end of the bag receiving arm for the lower pin to pass through. An elastic element is connected between the side end of the vertical connecting rod and the side wall of the filling tank. In the initial state, the upper pin and the lower pin are driven to pass through the first pin hole by the elastic element, and the lower pin passes into the second pin hole. When the bag receiving arm slides above the bag receiving arm, the upper pin is pushed to retract, and the lower pin moves horizontally synchronously and disengages from the second pin hole.

[0012] Preferably, the heads of the upper and lower pins are hemispherical, and the head diameter of the upper pin is larger than that of the lower pin.

[0013] Preferably, the top of the filling tank is provided with a slide rail, and a slider is slidably connected on the slide rail. The bag-retrieving arm includes a connecting arm connected to the bottom end of the slider, and a telescopic arm is connected to the bottom end of the connecting arm. The upper suction cup is connected to the bottom end of the telescopic arm.

[0014] Preferably, a feeding box is provided on one side of the bag box, and a bag storage bottom box is slidably connected inside the feeding box for conveying the packaging bag into the bag box.

[0015] Preferably, the filling tank is provided with a material receiving seat, and the sealing assembly includes a first elastic telescopic rod connected to the end of the slide plate near the bag box. One end of the first elastic telescopic rod is connected to a first sealing tube. A first material dropping space is left between the first sealing tube and the slide plate for the packaging bag to slide down. A second elastic telescopic rod is provided on the opposite side below the first elastic telescopic rod in the filling tank. One end of the second elastic telescopic rod is connected to a second sealing tube. A second material dropping space is left between the second elastic telescopic rod and the second sealing tube for the packaging bag to slide down. When the packaging bag filled with material slides down along the first material dropping space, it pushes the first elastic telescopic rod to extend elastically. The packaging bag continues to slide down along the second material dropping space and falls onto the material receiving seat. The first elastic telescopic rod and the second elastic telescopic rod retract in opposite directions and clamp the bag opening to seal the bag.

[0016] The present invention also provides a method for charging zinc oxide, comprising the following steps:

[0017] The screening tank continuously screens and discharges materials into the discharge port, which is connected to the discharge chute in the loading tank. In the initial state, it is locked onto the bag receiving arm by the limiting component, and the slide plate cannot rotate. The inclined upward end of the slide plate abuts against the bottom of the chute bottom wall to keep the discharge end of the discharge chute closed.

[0018] As the bag-picking arm slides to pick up the bag and moves above the receiving arm, the limiting component is triggered to disengage from the receiving arm. The bottom wall of the slide pushes the sliding plate against one end of the slide bottom wall, causing the end of the sliding plate near the discharge slide to rotate downwards. At the same time, the lower suction cup adsorbs the bottom opening of the packaging bag and rotates downwards with the sliding plate, thereby opening the bag opening. Simultaneously, the discharge end of the discharge slide is opened due to the downward rotation of the slide bottom wall. As the bag-picking arm and receiving arm continue to slide, the bag opening is fitted onto the discharge end of the discharge slide. The material is automatically loaded into the packaging bag along the inclined bottom wall of the slide. As the weight of the material at the bottom of the bag gradually increases, the end of the sliding plate near the bag box rotates downwards, and the packaging bag slides down the sliding plate so that the sealing component can seal it, realizing automatic sorting, bagging, and sealing.

[0019] The beneficial effects of this invention are as follows: The screening tank continuously discharges material into the outlet, which is connected to the discharge chute in the loading tank. Initially, the slide plate is locked onto the bag receiving arm by a limiting component, preventing it from rotating and keeping the discharge end of the chute closed. When the bag-picking arm slides to pick up the bag and moves above the bag receiving arm, the limiting component is triggered to disengage from the receiving arm. The end of the slide plate near the discharge chute rotates downwards, while the lower suction cup adheres to the bottom of the packaging bag and rotates downwards with the slide plate, thus opening the bag opening. This allows the bag opening to fit onto the discharge end of the chute, and the material is automatically loaded into the bag along the inclined bottom wall of the chute. As the weight of the material at the bottom of the bag gradually increases, the end of the slide plate near the bag box rotates downwards, and the bag slides down the slide plate, allowing the sealing component to seal it. This achieves automatic screening, bagging, and sealing. Throughout the process, the zinc oxide powder is not directly exposed during transport, solving the problems of low efficiency and high safety requirements in existing zinc oxide material screening and loading operations. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the feeding box of the present invention when feeding begins;

[0023] Figure 3 This is a schematic diagram of the material container structure when the bag-removing arm of the present invention starts to remove the bag;

[0024] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0025] Figure 5 For the present invention Figure 3 Enlarged view of point B in the middle;

[0026] Figure 6 This is a schematic diagram of the limiting component of the present invention;

[0027] Figure 7 This is a schematic diagram of the structure of the first elastic telescopic rod of the present invention;

[0028] Figure 8 This is a schematic diagram of the material tank structure when the bag-taking arm moves above the bag-receiving arm according to the present invention;

[0029] Figure 9 This is a schematic diagram of the loading tank at the start of the loading process of the present invention;

[0030] Figure 10 This is a schematic diagram of the structure of the packaging bag of the present invention.

[0031] The diagram is marked as follows:

[0032] 1. Screening tank; 2. Loading tank; 3. Inlet; 4. Outlet; 5. Discharge chute; 51. Upper wall of the chute; 52. Bottom wall of the chute; 6. Bag box; 61. Packaging bag; 7. Bag picking arm; 71. Connecting arm; 72. Telescopic arm; 8. Upper suction cup; 9. Slide plate; 91. Horizontal chute; 10. Bag receiving arm; 11. Lower suction cup; 12. Sealing assembly; 121. First elastic telescopic rod; 122. First sealing tube; 123. 124. First material drop space; 125. Second elastic telescopic rod; 126. Second plastic sealing tube; 127. Second material drop space; 13. Limiting component; 138. Vertical connecting rod; 139. Upper pin; 130. Lower pin; 131. Elastic component; 14. Screen; 15. Waste container; 16. First pin hole; 17. Second pin hole; 18. Slide rail; 19. Slider; 20. Feeding box; 21. Storage bag bottom box; 22. Material receiving seat. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0034] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9As shown, a zinc oxide screening and loading device includes a screening tank 1 for screening zinc oxide material, and a loading tank 2 for collecting and bagging the screened material connected to one side of the screening tank 1. The screening tank 1 has an inlet 3 at its top and an outlet 4 at its bottom. A discharge chute 5 is connected to the loading tank 2 on one side of the outlet 4. The discharge chute 5 includes an upper wall 51 fixed to the side of the loading tank 2 and a rotatably connected to the loading tank 2. The bottom wall 52 of the side slide is connected to the inlet of the discharge slide 5 and the outlet 4. In the initial state, the bottom wall 52 of the slide 5 rotates and abuts against the upper wall 51 of the slide, so that the discharge end of the discharge slide 5 is closed. The filling tank 2 is provided with a bag box 6, and the bag box 6 contains stacked packaging bags 61. The top of the filling tank 2 is provided with a bag picking arm 7, and the bottom end of the bag picking arm 7 is connected to an upper suction cup 8. A sliding plate is rotatably connected between the discharge slide 5 and the bag box 6 inside the filling tank 2. 9. One end of the slide plate 9 abuts against the bottom end of the slide channel bottom wall 52. A bag receiving arm 10 is connected to the end of the slide plate 9 near the discharge slide channel 5. A lower suction cup 11 is connected to the top of the bag receiving arm 10. A sealing component 12 is provided at the end of the slide plate 9 near the bag box 6. A limiting component 13 is provided in the filling tank 2. In the initial state, the limiting component 13 is engaged with the bag receiving arm 10. When the bag is taken out by the sliding bag taking arm 7 and slides above the bag receiving arm 10, the limiting component 13 is triggered to disengage from the bag receiving arm 10, so that the end of the slide plate 9 near the discharge slide channel 5 rotates downward. The lower suction cup 11 adsorbs the lower opening of the packaging bag 61 and rotates downward. At the same time, the slide channel bottom wall 52 rotates downward, so that the bag opening of the packaging bag 61 is fitted onto the discharge end of the discharge slide channel 5. As the packaging bag 61 is filled with material, the end of the slide plate 9 near the bag box 6 rotates downward, and the packaging bag 61 slides down along the slide plate 9 so that the sealing component 12 seals it.

[0036] This invention includes a screening tank 1 for screening zinc oxide materials. A loading tank 2 for collecting and bagging the screened material is connected to one side of the screening tank 1. The screening tank 1 has an inlet 3 at its top and an outlet 4 at its bottom. A discharge chute 5 is connected to the side of the outlet 4 inside the loading tank 2. The discharge chute 5 includes an upper wall 51 fixed to the side of the loading tank 2 and a bottom wall 52 rotatably connected to the side of the loading tank 2. Specifically, as shown... Figure 1 As shown, the upper wall 51 of the slide includes an inclined top wall and side walls fixedly connected to both sides of the top wall. The top wall, side walls, and bottom wall 52 of the slide together form a complete discharge slide 5. The two ends of the discharge slide 5 are the inlet end and the outlet end, respectively. The inlet end of the discharge slide 5 is connected to the outlet 4. In the initial state, the bottom wall 52 of the slide rotates and abuts against the upper wall 51 of the slide, so that the outlet end of the discharge slide 5 is in a closed state. The filling tank 2 is provided with a bag box 6, and multiple layers of packaging bags 61 are stacked in the bag box 6. A bag picking arm 7 is slidably provided at the top of the filling tank 2. The bottom end of the bag picking arm 7 is connected to an upper suction cup 8. A sliding plate 9 is rotatably connected between the discharge slide 5 and the bag box 6 inside the filling tank 2. Specifically, as shown... Figure 1 As shown, the end of the slide plate 9 near the discharge chute 5 is inclined upwards, and the inclined upward end of the slide plate 9 abuts against the bottom end of the chute bottom wall 52. A bag receiving arm 10 is connected to the end of the slide plate 9 near the discharge chute 5, and a lower suction cup 11 is connected to the top of the bag receiving arm 10. A sealing component 12 is provided at the end of the slide plate 9 near the bag box 6. In the initial state, the slide plate 9 is locked onto the bag receiving arm 10 by the limiting component 13, and the slide plate 9 cannot rotate, thereby maintaining the inclined upward end of the slide plate 9 abutting against the bottom end of the chute bottom wall 52, so that the discharge end of the discharge chute 5 is kept closed. When the bag picking arm 7 slides to pick up the bag and slides above the bag receiving arm 10, the limiting component 13 is triggered to disengage from the bag receiving arm 10. At this time, due to the continuous screening and discharge of material from the screening tank 1 into the discharge port 4, the weight of the material accumulated on the chute bottom wall 52 and the self-weight of the chute bottom wall 52 push the slide plate 9 to abut against one end of the chute bottom wall 52, so that the slide plate 9 is close to the discharge. One end of the slide 5 rotates downwards, while the lower suction cup 11 adsorbs the lower opening of the packaging bag 61 and rotates downwards with the slide plate 9, thereby opening the bag opening of the packaging bag 61. At the same time, as the bottom wall 52 of the slide rotates downwards, it opens the discharge end of the discharge slide 5. As the bag picking arm 7 and the bag receiving arm 10 continue to slide, the bag opening of the packaging bag 61 is fitted onto the discharge end of the discharge slide 5. The material is automatically loaded into the packaging bag 61 along the inclined bottom wall 52 of the slide. Since the packaging bag 61 is placed on the inclined slide plate 9, the zinc oxide powder accumulates at the bottom of the bag at an inclined downwards. As the weight of the material at the bottom of the bag gradually increases, the end of the slide plate 9 near the bag box 6 rotates downwards, and the packaging bag 61 slides down the slide plate 9 so that the sealing component 12 can seal it, realizing automatic screening, bagging and sealing. In the whole process, the zinc oxide powder is not directly exposed to the conveyor, which solves the problems of low efficiency and high safety protection requirements of the existing screening and loading operation of zinc oxide materials.

[0037] In embodiments of the present invention, such as Figure 1 , Figure 2 As shown, multiple screens 14 are arranged at intervals from top to bottom inside the screening tank 1. The screens 14 are inclined inside the screening tank 1 to achieve the effect of multi-layer sequential screening. The discharge port 4 is located at the inclined downward end of the lowest screen 14.

[0038] In embodiments of the present invention, such as Figure 1 , Figure 2 As shown, a waste tank 15 is provided at the top of the loading tank 2. The side of the waste tank 15 is connected to the screening tank 1 and is used to receive the waste filtered out by the screen 14 above. The empty area at the top of the loading tank 2 is used to clean up the waste in time and avoid the accumulation of material and blockage in the screening tank 1.

[0039] In embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the slide plate 9 is provided with a horizontal slide 91 at one end near the discharge slide 5. The bottom end of the bag receiving arm 10 is slidably connected to the side end of the horizontal slide 91. Preferably, the bag receiving arm 10 is slidably connected to both sides of the horizontal slide 91. The bag taking arm 7 is slidably set on both sides of the top of the filling tank 2 so that the upper suction cup 8 and the lower suction cup 11 can firmly adsorb the two sides of the bag opening of the packaging bag 61. In the initial state, the end of the horizontal slide 91 near the bag box 6 is inclined downward. The bag receiving arm 10 slides to the end of the horizontal slide 91 near the bag box 6 under its own weight. When the end of the slide plate 9 near the discharge slide 5 rotates downward, the end of the horizontal slide 91 near the bag box 6 turns to be inclined upward. The bag receiving arm 10 slides down along the horizontal slide 91 under its own weight so as to move horizontally in sync with the bag taking arm 7, so as to drive the bag opening of the packaging bag 61 to be sleeved on the discharge end of the discharge slide 5.

[0040] Preferably, a counterweight is also connected to the side end of the bag receiving arm 10 to facilitate the inclined sliding of the bag receiving arm 10 along the transverse slide 91.

[0041] In embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9As shown, the limiting component 13 includes a vertical connecting rod 131 elastically connected to the side end of the filling tank 2. Preferably, the vertical connecting rod 131 is hidden on the outside of the filling tank 2. The upper and lower ends of the vertical connecting rod 131 are respectively fixedly connected to an upper pin 132 and a lower pin 133. A first pin hole 16 is opened on the side wall of the filling tank 2 for the upper pin 132 and the lower pin 133 to pass through. A second pin hole 17 is opened on the side end of the bag receiving arm 10 for the lower pin 133 to pass through. An elastic element 134 is connected between the side end of the vertical connecting rod 131 and the side wall of the filling tank 2. Specifically, the elastic element 134 can be an existing elastic component such as a spring. In the initial state, the elastic element 134 drives the vertical connecting rod 131 to move towards the filling tank 2, thereby driving... The upper pin 132 and the lower pin 133 pass through the first pin hole 16, and the lower pin 133 passes into the second pin hole 17, so as to achieve stable locking and limiting of the bag receiving arm 10 and the slide plate 9. When the bag taking arm 7 slides above the bag receiving arm 10, the upper pin 132 is pushed back, which drives the lower pin 133 to move laterally and disengage from the second pin hole 17. Specifically, the heads of the upper pin 132 and the lower pin 133 can be hemispherical, and the head diameter of the upper pin 132 is larger than the head diameter of the lower pin 133. So when the bag taking arm 7 slides above the bag receiving arm 10, the head of the upper pin 132 is pushed, so that the head of the lower pin 133 and part of the rod of the lower pin 133 move out of the second pin hole 17, thereby disengaging from the locking.

[0042] In embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the top of the filling tank 2 is provided with a slide rail 18, and a slider 19 is slidably connected to the slide rail 18. The slider 19 can be an existing type of drive screw assembly, which drives the slider 19 to move back and forth along the slide rail 18. The bag picking arm 7 includes a connecting arm 71 connected to the bottom of the slider 19. The bottom of the connecting arm 71 is connected to a telescopic arm 72. The upper suction cup 8 is connected to the bottom of the telescopic arm 72. The telescopic arm 72 extends and retracts vertically, which makes it easy for the upper suction cup 8 to pick up packaging bags 61 of different heights in the bag box 6.

[0043] Preferably, a feeding box 20 is also provided on one side of the bag box 6, and a bag storage bottom box 21 is slidably connected inside the feeding box 20. When there are not enough packaging bags 61 in the bag box 6, the new batch of packaging bags 61 is conveyed into the bag box 6 through the bag storage bottom box 21.

[0044] In embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, the filling tank 2 is equipped with a material receiving seat 22. The sealing assembly 12 includes a first elastic telescopic rod 121 connected to the end of the slide plate 9 near the bag box 6. One end of the first elastic telescopic rod 121 is connected to a first plastic sealing tube 122. A first material dropping space 123 is left between the first plastic sealing tube 122 and the slide plate 9 for the packaging bag 61 to slide down. A second elastic telescopic rod 124 is provided on the opposite side below the first elastic telescopic rod 121 in the filling tank 2. One end of the second elastic telescopic rod 124 is connected to a... A second material drop space 126 is provided between the second sealing tube 125, the second elastic telescopic rod 124 and the second sealing tube 125 for the packaging bag 61 to slide down. When the packaging bag 61 filled with material slides down along the first material drop space 123, it pushes the first elastic telescopic rod 121 to extend elastically. The packaging bag 61 continues to slide down along the second material drop space 126 and falls onto the material receiving seat 22. The first elastic telescopic rod 121 and the second elastic telescopic rod 124 retract in opposite directions and clamp the bag mouth to seal the bag.

[0045] Among them, such as Figure 10 As shown, the middle of the opening of the packaging bag 61 can be designed with an elastic band, and the two sides of the elastic band are the suction cup positions. The packaging bag 61 can be made of existing plastic materials. Preferably, a harder plastic packaging bag 61 can be used, so that when the upper suction cup 8 sucks the corresponding position at the upper end of the opening of the packaging bag 61, the bottom end of the opening will not droop too much. When the bag-taking arm 7 slides close to the bag-receiving arm 10, the telescopic arm 72 moves vertically to extend and retract, so that the upper suction cup 8 slides in a downward direction to the top of the bag-receiving arm 10, ensuring that the lower suction cup 11 sucks the corresponding position at the lower end of the opening of the packaging bag 61 and abuts against the upper suction cup 8.

[0046] The bag-picking arm 7 and the bag-receiving arm 10 are located on both sides of the discharge chute 5 to avoid interference with the discharge chute 5 during bagging. Because the bag opening of the packaging bag 61 has an elastic band design in the middle, the bag-receiving arm 10 slides down the transverse chute 91 under its own weight. When it moves forward synchronously with the bag-picking arm 7, it causes the bag opening of the packaging bag 61 to fit onto the discharge end of the discharge chute 5. The elastic band in the middle of the bag opening of the packaging bag 61 elastically opens and fits tightly against the outer wall of the discharge chute 5, ensuring a certain degree of sealing and preventing the zinc oxide powder from spilling out. The two sides of the bag opening of the packaging bag 61 have an inward fold design, allowing the bag opening to open and fit. During filling, the suction force of the suction cup can be reduced so that the filled packaging bag 61 automatically detaches and falls under its own weight. Meanwhile, the rigid plastic packaging... The design of bag 61 facilitates the smooth sliding of the filled packaging bag 61 down the slide plate 9. When the bottom of the bag falls down along the first material drop space 123 after being filled, it pushes the first elastic telescopic rod 121 to spring outward a short distance, and then falls down along the second material drop space 126 onto the material receiving seat 22. The opening of the packaging bag 61 moves between the first sealing tube 122 and the second sealing tube 125. The first sealing tube 122 and the second sealing tube 125 spring back to abut the opening of the bag and begin heat sealing. In addition, a side door can be provided on the side of the material receiving seat 22. The material receiving seat 22 itself is inclined. After the bag is sealed, the side door opens automatically, so that the packaging bag 61 slides down along the material receiving seat 22 at an incline and falls into the packaging barrel to complete the final barrel packaging. After the material is dropped, the side door closes automatically, waiting for the next packaging bag 61 to drop.

[0047] The present invention also provides a method for charging zinc oxide, comprising the following steps:

[0048] The screening tank 1 continuously screens and discharges material into the discharge port 4. The discharge port 4 is connected to the discharge chute 5 in the loading tank 2. In the initial state, it is locked onto the receiving arm 10 by the limiting component 13, and the slide plate 9 cannot rotate. The inclined upward end of the slide plate 9 abuts against the bottom end of the bottom wall 52 of the chute, so that the discharge end of the discharge chute 5 remains closed.

[0049] As the bag-picking arm 7 slides to pick up the bag and moves above the receiving arm 10, the limiting component 13 is triggered to disengage from the receiving arm 10. The bottom wall 52 of the slide rail pushes the sliding plate 9 to abut against one end of the bottom wall 52 of the slide rail, so that the end of the sliding plate 9 near the discharge slide rail 5 rotates downward. At the same time, the lower suction cup 11 adsorbs the lower opening of the packaging bag 61 and rotates downward with the sliding plate 9, thereby opening the bag opening of the packaging bag 61. Simultaneously, as the bottom wall 52 of the slide rail rotates downward, the discharge end of the discharge slide rail 5 is opened. As the bag-picking arm 7 and the receiving arm 10 continue to slide, the bag opening of the packaging bag 61 is fitted onto the discharge end of the discharge slide rail 5. The material is automatically loaded into the packaging bag 61 along the inclined bottom wall 52 of the slide rail. As the weight of the material at the bottom of the bag gradually increases, the end of the sliding plate 9 near the bag box 6 rotates downward. The packaging bag 61 slides down the sliding plate 9 so that the sealing component 12 can seal it, realizing automatic screening, bagging and sealing.

[0050] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.

[0051] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A zinc oxide screening and loading device, comprising a screening tank (1) for screening zinc oxide material, wherein a loading tank (2) for collecting and bagging the screened material is connected to one side of the screening tank (1), characterized in that: The screening tank (1) has a feed inlet (3) at the top and a discharge outlet (4) at the bottom. The loading tank (2) has a discharge chute (5) connected to the side of the discharge outlet (4). The discharge chute (5) includes an upper wall (51) fixed to the side of the loading tank (2) and a bottom wall (52) rotatably connected to the side of the loading tank (2). The feed end of the discharge chute (5) is connected to the discharge outlet (4). In the initial state, the bottom wall (52) of the chute rotates and abuts against the upper wall (51) of the chute so that the discharge end of the discharge chute (5) is in a closed state. The filling tank (2) is provided with a bag box (6), and the bag box (6) contains stacked packaging bags (61). A bag-retrieving arm (7) is slidably provided at the top of the filling tank (2), and an upper suction cup (8) is connected to the bottom end of the bag-retrieving arm (7). A sliding plate (9) is rotatably connected between the discharge slide (5) and the bag box (6) in the filling tank (2). One end of the sliding plate (9) abuts against the bottom end of the slide bottom wall (52). A bag-receiving arm (10) is connected to the end of the sliding plate (9) near the discharge slide (5). A lower suction cup (11) is connected to the top end of the bag-receiving arm (10). A sealing component (12) is provided at the end of the sliding plate (9) near the bag box (6). The filling tank (2) is provided with a limiting component (13). In the initial state, the limiting component (13) is engaged with the bag receiving arm (10). When the bag is slid out by the bag taking arm (7) and slides above the bag receiving arm (10), the limiting component (13) is triggered to disengage from the bag receiving arm (10), so that the slide plate (9) near the end of the discharge slide (5) rotates downward. The lower suction cup (11) adsorbs the lower opening of the packaging bag (61) and rotates downward. At the same time, the bottom wall (52) of the slide rotates downward, so that the bag opening of the packaging bag (61) is fitted onto the discharge end of the discharge slide (5). As the packaging bag (61) is filled with material, the slide plate (9) near the end of the bag box (6) rotates downward. The packaging bag (61) slides down along the slide plate (9) so that the sealing component (12) seals it.

2. The zinc oxide screening and loading device according to claim 1, characterized in that, The screening tank (1) is provided with multiple screens (14) spaced from top to bottom. The screens (14) are inclined inside the screening tank (1), and the discharge port (4) is located at the inclined downward end of the lowest screen (14).

3. The zinc oxide screening and loading device according to claim 2, characterized in that, The top of the loading tank (2) is provided with a waste tank (15), and the side of the waste tank (15) is connected to the screening tank (1) to receive the waste filtered out by the upper screen (14).

4. The zinc oxide screening and loading device according to claim 1, characterized in that, The slide plate (9) is provided with a horizontal slide (91) at one end near the discharge slide (5). The bottom end of the bag receiving arm (10) is slidably connected to the side end of the horizontal slide (91). In the initial state, the bag receiving arm (10) slides to the end of the horizontal slide (91) near the bag box (6). When the slide plate (9) rotates downward at the end near the discharge slide (5), the bag receiving arm (10) slides down along the horizontal slide (91).

5. The zinc oxide screening and feeding device according to claim 1, characterized in that, The limiting component (13) includes a vertical connecting rod (131) elastically connected to the side end of the filling tank (2). An upper pin (132) and a lower pin (133) are fixedly connected to the upper and lower ends of the vertical connecting rod (131), respectively. A first pin hole (16) is provided on the side wall of the filling tank (2) for the upper pin (132) and the lower pin (133) to pass through. A second pin hole (17) is provided on the side end of the bag receiving arm (10) for the lower pin (133) to pass through. The side end of the vertical connecting rod (131) is connected to the... An elastic element (134) is connected between the side walls of the filling tank (2). In the initial state, the elastic element (134) drives the upper pin (132) and the lower pin (133) to pass through the first pin hole (16), and the lower pin (133) passes into the second pin hole (17). When the bag-receiving arm (7) slides above the bag-receiving arm (10), the upper pin (132) is pushed back, and the lower pin (133) moves horizontally in sync and disengages from the second pin hole (17).

6. The zinc oxide screening and loading device according to claim 5, characterized in that, The heads of the upper pin (132) and the lower pin (133) are hemispherical, and the head diameter of the upper pin (132) is larger than the head diameter of the lower pin (133).

7. The zinc oxide screening and loading device according to claim 1, characterized in that, The top of the filling tank (2) is provided with a slide rail (18), and a slider (19) is slidably connected on the slide rail (18). The bag-taking arm (7) includes a connecting arm (71) connected to the bottom of the slider (19). A telescopic arm (72) is connected to the bottom of the connecting arm (71). The upper suction cup (8) is connected to the bottom of the telescopic arm (72).

8. The zinc oxide screening and loading device according to claim 1, characterized in that, A feeding box (20) is provided on one side of the bag box (6), and a bag storage bottom box (21) is slidably connected inside the feeding box (20) for conveying the packaging bag (61) into the bag box (6).

9. The zinc oxide screening and feeding device according to claim 1, characterized in that, The filling tank (2) is provided with a material support seat (22). The sealing assembly (12) includes a first elastic telescopic rod (121) connected to the end of the slide plate (9) near the bag box (6). One end of the first elastic telescopic rod (121) is connected to a first plastic sealing tube (122). A first material drop space (123) is left between the first plastic sealing tube (122) and the slide plate (9) for the packaging bag (61) to slide down. A second elastic telescopic rod (124) is provided on the opposite side below the first elastic telescopic rod (121) in the filling tank (2). One end of the second elastic telescopic rod (124) is connected to the first plastic sealing tube (122) near the bag box (6). The first elastic telescopic rod (124) is connected to the second plastic sealing tube (125). A second material drop space (126) is left between the second elastic telescopic rod (124) and the second plastic sealing tube (125) for the packaging bag (61) to slide down. When the packaging bag (61) filled with material slides down along the first material drop space (123), it pushes the first elastic telescopic rod (121) to extend elastically. The packaging bag (61) continues to slide down along the second material drop space (126) and falls onto the material support (22). The first elastic telescopic rod (121) and the second elastic telescopic rod (124) retract in opposite directions and clamp the bag mouth to seal the bag.

10. A method for charging secondary zinc oxide, wherein the method employs the secondary zinc oxide screening and charging device as described in any one of claims 1-9, characterized in that, Includes the following steps: The screening tank (1) continuously screens and discharges material into the discharge port (4). The discharge port (4) is connected to the discharge chute (5) in the loading tank (2). In the initial state, it is locked onto the bag receiving arm (10) by the limiting component (13). The slide plate (9) cannot rotate. The inclined upward end of the slide plate (9) abuts against the bottom end of the chute bottom wall (52) so that the discharge end of the discharge chute (5) remains closed. When the bag is picked up by the bag-picking arm (7) and slides above the bag-receiving arm (10), the limiting component (13) is triggered to disengage from the bag-receiving arm (10). The bottom wall of the slide (52) pushes the slide plate (9) to abut against one end of the bottom wall of the slide (52), so that the slide plate (9) rotates downward near the end of the discharge slide (5). At the same time, the lower suction cup (11) adsorbs the lower opening of the packaging bag (61) and rotates downward with the slide plate (9), thereby opening the bag opening of the packaging bag (61). At the same time, due to the rotation of the bottom wall of the slide (52) towards the bottom, the bag opening is opened. The discharge end of the discharge chute (5) is opened, and the bag picking arm (7) and bag receiving arm (10) continue to slide so that the bag mouth of the packaging bag (61) is fitted onto the discharge end of the discharge chute (5). The material is automatically loaded into the packaging bag (61) along the inclined bottom wall (52). As the weight of the material at the bottom of the bag gradually increases, the end of the slide plate (9) close to the bag box (6) rotates downward, and the packaging bag (61) slides down along the slide plate (9) so that the sealing component (12) seals the bag, thus realizing automatic screening, bagging and sealing.

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