A particle homogenization device

Abstract

The application relates to a particle homogenizing device, belonging to the field of particle homogenization, which comprises a bin, a circulating mechanism and a negative pressure mechanism, wherein the circulating mechanism comprises a hopper, a discharging pipe, a suction pipe and an air extraction pipe; the hopper is installed at the top of the bin, a filter screen is arranged in the hopper, and a discharging valve is arranged at the discharging port of the hopper; the two ends of the discharging pipe are communicated with the bin and the hopper respectively; one end of the suction pipe is communicated with the bottom of the bin, and the other end is communicated with the hopper; the communication position of the suction pipe and the hopper is located at the lower side of the filter screen; one end of the air extraction pipe is communicated with the top of the hopper, and the other end is communicated with the negative pressure mechanism. In the application, the particles at the bottom of the bin are sucked into the hopper and intercepted by the filter screen and accumulated at the lower side of the filter screen; when the discharging valve is opened, the particles are automatically returned to the bin, manual collection and transportation of the particles intercepted by the filter screen are not needed, and the effect of effectively saving labor is achieved.

Description

Technical Field

[0001] This application relates to the field of particle homogenization, and in particular to a particle homogenization device. Background Technology

[0002] In the preparation of rubber or plastics, there may be slight differences in key performance parameters between different production batches of raw materials, which can lead to differences between products. When directly bagged, each bag of product may contain only a single batch of material, or the mixing ratio of different batches of material may be extremely uneven. This results in significant differences in physical and processing properties between different batches of the same product leaving the factory, affecting the production stability of downstream customers.

[0003] In related technologies, particle homogenization devices break down the stratification or agglomeration of materials through specific material conveying, circulation, and mixing mechanisms, making key indicators such as particle size, composition, and density of the materials more consistent across the entire range. Chinese Patent Publication No. CN219427193U discloses a plastic particle homogenization device, which includes a storage hopper, a first suction hopper, a second suction hopper, a receiving hopper, a negative pressure device, a negative pressure pipe, a feed pipe, and a suction pipe. The first and second suction hoppers are both installed on top of the storage hopper, and the storage hopper and the second suction hopper are connected via the suction pipe. The negative pressure device is connected to both the first and second suction hoppers via a negative pressure pipe. The negative pressure pipe is equipped with a shut-off valve and a filter to prevent plastic particles from entering the negative pressure device through the negative pressure pipe and damaging the device.

[0004] Regarding the aforementioned technologies, when using the above-mentioned plastic particle homogenization equipment to homogenize plastic particles, the filter will continuously accumulate and intercept particles during long-term operation. These particles need to be collected and removed from the filter by operators periodically, and then manually transported to the feed inlet of the hopper for manual feeding and return. This process is quite labor-intensive and has room for improvement. Utility Model Content

[0005] To address the issue of particles accumulating and being trapped in filters during long-term operation, which require periodic collection and removal by operators, manual transfer to the feed inlet of the silo, and manual feeding back, this application provides a particle homogenization device.

[0006] The particle homogenization device provided in this application adopts the following technical solution: A particle homogenization device includes a hopper, a circulation mechanism, and a negative pressure mechanism. The circulation mechanism includes a hopper, a feeding pipe, a suction pipe, and an air extraction pipe. The hopper is installed on the top of the silo, the hopper is equipped with a filter screen, and the hopper is equipped with a discharge valve at the discharge port; The two ends of the feeding pipe are respectively connected to the hopper and the material bin; One end of the suction pipe is connected to the bottom of the hopper, and the other end is connected to the hopper. The connection between the suction pipe and the hopper is located on the lower side of the filter screen. One end of the suction pipe is connected to the top of the hopper, and the other end is connected to the negative pressure mechanism.

[0007] By adopting the above technical solution, a negative pressure is formed in the hopper through the negative pressure mechanism, which draws the particles at the bottom of the hopper into the hopper through the suction pipe; the particles are intercepted by the filter screen and accumulate in the hopper below the filter screen; when the discharge valve is opened, the particles automatically flow back to the hopper through the discharge pipe, realizing the circulation and homogenization of particles between the hopper and the hopper, and eliminating the need for manual collection and transfer of particles intercepted by the filter screen, effectively saving manpower.

[0008] Optionally, the discharge valve includes a sealing tongue that is rotatably connected to the inner wall of the hopper.

[0009] By adopting the above technical solution, when the negative pressure mechanism is working, a negative pressure environment is formed inside the hopper, which will generate an upward suction force on the sealing tongue, pressing the sealing tongue tightly against the outlet of the hopper, thereby improving the sealing performance of the space inside the hopper.

[0010] Optionally, the discharge valve further includes a counterweight disposed in the hopper and a pull rope connecting the sealing tongue and the counterweight. A horizontally extending boom is fixedly connected to the inner wall of the hopper, and the pull rope rests on the boom.

[0011] By adopting the above technical solution, when there are few particles in the hopper, the weight of the counterweight pulls the sealing tongue through the pull rope, which, together with the negative pressure mechanism, enhances the sealing performance of the sealing tongue. When the particles accumulate to a certain weight, the weight of the particles overcomes the pull of the counterweight, pushing the sealing tongue to rotate and open, thus realizing automatic material discharge. After the particles are discharged, the counterweight pulls the sealing tongue again to reset the seal, without the need for additional power drive, which improves the convenience of opening and closing the sealing tongue.

[0012] Optionally, the particle homogenization device also includes a controller. The number of circulation mechanisms is two sets. The hoppers of the two sets of circulation mechanisms are respectively connected to the negative pressure mechanism through their respective air extraction pipes. Each of the two air extraction pipes is equipped with a control valve, and the control valve is electrically connected to the controller.

[0013] By adopting the above technical solution, the controller controls two control valves to open alternately, so that the two sets of circulation mechanisms alternately perform material suction and discharge. When one set of circulation mechanisms is suctioning material, the other set of circulation mechanisms discharges material through the discharge valve, ensuring the continuity of particle circulation and improving the particle homogenization efficiency.

[0014] Optionally, the filter screen includes a metal frame and a filter screen body fixedly connected to the metal frame. The inner wall of the hopper is provided with an installation assembly for mounting the metal frame. The installation assembly includes a plurality of installation blocks that are spaced apart along the circumference of the hopper and fixedly connected to the inner wall of the hopper.

[0015] By adopting the above technical solution, the mounting blocks are distributed at intervals along the circumference of the hopper, providing stable support for the metal frame and facilitating the positioning and installation of the filter screen; on the other hand, the filter screen can be directly removed during disassembly, improving the convenience of cleaning or replacing the filter screen.

[0016] Optionally, the mounting block is provided with a through hole for the metal frame to pass through, the through hole extending through the top side of the mounting block.

[0017] By adopting the above technical solution, the through hole extends through the top side of the mounting block, and the metal frame of the filter screen can be directly inserted into the through hole from the top of the hopper, achieving quick installation; during disassembly, it can be pulled upwards, simplifying the installation and removal of the filter screen and improving maintenance convenience.

[0018] Optionally, the mounting assembly further includes an abutment ring fixedly connected to the inner wall of the hopper, the abutment ring being located on the top side of the mounting block, and the distance between the abutment ring and the mounting block being less than the thickness of the metal frame.

[0019] By adopting the above technical solution, the abutment ring is located on the top side of the mounting block, and the distance between it and the mounting block is less than the thickness of the metal frame. The metal frame is installed in the through hole. When the filter screen is lifted out of the through hole under negative pressure, the abutment ring abuts against the top of the metal frame, reducing the probability of the filter screen being lifted out of the mounting block under negative pressure and improving the stability of the filter screen installation.

[0020] Optionally, the metal frame has mounting grooves distributed circumferentially, each corresponding to a mounting block.

[0021] By adopting the above technical solution, the mounting grooves of the metal frame correspond one-to-one with the mounting blocks. During installation, the mounting blocks are embedded in the mounting grooves, which restricts the circumferential rotation and axial movement of the filter screen, reduces the probability of the filter screen shifting when subjected to particle impact or negative pressure changes, and improves the installation stability of the filter screen.

[0022] Optionally, the side wall of the mounting groove is provided with a snap-fit ​​groove, and the two sides of the mounting block are provided with snap-fit ​​blocks that correspond one-to-one with the snap-fit ​​groove.

[0023] By adopting the above technical solution, the snap-fit ​​groove of the mounting slot cooperates with the snap-fit ​​block of the mounting block. After the metal frame is installed in place, the snap-fit ​​block snaps into the snap-fit ​​groove, which further enhances the structure of the mounting block embedded in the mounting slot, so that the filter screen maintains a stable installation state during long-term operation and further improves the installation stability of the filter screen.

[0024] Optionally, the snap-fit ​​block is provided with a guide surface.

[0025] By adopting the above technical solution, the guide surface on the snap-fit ​​block plays a guiding role when installing the filter screen, allowing the snap-fit ​​block to slide into the snap-fit ​​groove more smoothly, reducing the alignment difficulty during installation and improving the installation efficiency of the filter screen.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. After the particles at the bottom of the hopper are sucked into the hopper, they are intercepted by the filter screen and accumulate on the lower side of the filter screen. When the discharge valve is opened, the particles automatically flow back to the hopper. There is no need for manual collection and transfer of the particles intercepted by the filter screen, which effectively saves manpower. 2. When the negative pressure mechanism is working, a negative pressure environment is formed inside the hopper, which generates an upward suction force on the sealing tongue, pressing the sealing tongue tightly against the outlet of the hopper, thus improving the hopper's sealing performance. 3. When there are few particles in the hopper, the counterweight pulls the sealing tongue through the rope to achieve sealing; when the particles accumulate to a certain weight, the weight of the particles overcomes the pulling force of the counterweight and pushes the sealing tongue to achieve automatic discharge; this improves the convenience of opening and closing the sealing tongue. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a particle homogenization device according to Embodiment 1 of this application.

[0028] Figure 2 This is a half-sectional view of the hopper in Embodiment 1 of this application.

[0029] Figure 3 yes Figure 2 A magnified structural diagram of part A in the middle.

[0030] Figure 4 yes Figure 2 A magnified structural diagram of section B.

[0031] Figure 5 This is a half-sectional view of the hopper in Embodiment 2 of this application.

[0032] Figure 6 yes Figure 5 Enlarged structural diagram of section C.

[0033] Explanation of reference numerals in the attached drawings: 1. Hopper; 2. Negative pressure mechanism; 3. Circulation mechanism; 31. Hopper; 311. Discharge valve; 3111. Sealing tongue; 3112. Hook; 3113. Pull rope; 3114. Counterweight; 312. Mounting assembly; 3121. Mounting block; 31211. Through hole; 31212. Snap-fit ​​block; 31213. Guide surface; 3122. Abutment ring; 313. Filter screen; 3131. Metal frame; 31311. Mounting groove; 31312. Snap-fit ​​groove; 3132. Filter screen body; 32. Discharge pipe; 33. Suction pipe; 34. Air extraction pipe; 4. Control assembly; 41. Control valve; 42. Controller. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0035] This application discloses a particle homogenization device.

[0036] Example 1 Reference Figure 1 The granulation homogenization device includes a hopper 1, a negative pressure mechanism 2, two sets of circulation mechanisms 3, and a control component 4. The hopper 1 and the negative pressure mechanism 2 are connected through the circulation mechanism 3 to circulate and homogenize the plastic granules in the hopper 1. The control component 4 is installed on the circulation mechanism 3 to control the two sets of circulation mechanisms 3 to work alternately.

[0037] Reference Figure 1 The circulation mechanism 3 includes a hopper 31, a discharge pipe 32, a suction pipe 33, and a vacuum pipe 34. The hopper 31 is fixedly connected to the top of the hopper 1. The two ends of the discharge pipe 32 are respectively connected to the hopper 1 and the hopper 31, so that the particles in the hopper 31 can fall into the hopper 1 through the discharge pipe 32. One end of the suction pipe 33 is fixedly connected to the bottom of the hopper 1 and communicates with the hopper 1, and the other end is connected to the hopper 31, so that under the action of the negative pressure mechanism 2, plastic particles can be sucked into the hopper 31 through the suction pipe 33.

[0038] Reference Figure 1 One end of the suction pipe 34 is fixedly connected to the top of the hopper 31 and communicates with the hopper 31, while the other end is connected to the negative pressure mechanism 2, so that the hopper 31 is under negative pressure by suction through the negative pressure mechanism 2. The control component 4 includes two control valves 41 and a controller 42. The two control valves 41 are fixedly connected to the two suction pipes 34 respectively to control the opening and closing of the suction pipes 34. The controller 42 is electrically connected to the control valves 41 to control the two control valves 41 to open and close alternately.

[0039] Reference Figure 2 and Figure 3To ensure the airtightness of the internal space of the hopper 31, a discharge valve 311 is arranged inside the hopper 31. The discharge valve 311 includes a sealing tongue 3111, a lifting rod 3112, a pull rope 3113, and a counterweight 3114. The sealing tongue 3111 is rotatably connected to the inner wall of the hopper 31. The lifting rod 3112 is fixedly connected to the inner wall of the hopper 31 and extends laterally to allow the pull rope 3113 to rest against it. One end of the pull rope 3113 is fixedly connected to the side of the sealing tongue 3111 away from the rotatable connection, and the other end is fixedly connected to the counterweight 3114. When there are few particles in the hopper 31, the counterweight 3114 pulls the sealing tongue 3111 upward through the pull rope 3113, and the sealing tongue 3111 presses against the discharge port of the hopper 31. When a negative pressure environment is formed in the hopper 31, the sealing tongue 3111 is subjected to an upward suction force, which further makes the sealing tongue 3111 press more tightly. When there are many particles in the hopper 31, the weight of the particles overcomes the pulling force of the counterweight 3114 and pushes the sealing tongue 3111 to rotate and open, realizing automatic material discharge.

[0040] Reference Figure 2 and Figure 4 The hopper 31 is also equipped with an installation assembly 312 and a filter screen 313. The installation assembly 312 includes several installation blocks 3121 and an abutment ring 3122. The installation blocks 3121 are distributed circumferentially and are fixedly connected to the inner wall of the hopper 31. The installation blocks 3121 have through holes 31211, which penetrate the top side of the installation blocks 3121. The filter screen 313 includes a metal frame 3131 and a filter screen body 3132, which is fixedly connected to the metal frame 3131. The metal frame 3131 passes through all the through holes 31211 through the side of the installation blocks 3121, so as to install the filter screen 313 onto the inner wall of the hopper 31. The filter screen 313 is located above the connection between the suction pipe 33 and the hopper 31 to prevent particles sucked into the hopper 31 from being drawn into the suction pipe 34.

[0041] Reference Figure 4 The abutment ring 3122 is fixedly connected to the inner wall of the hopper 31 and is located above the mounting block 3121. The height difference between the abutment ring 3122 and the mounting block 3121 is less than the thickness of the metal frame 3131, so that when the filter screen 313 is accidentally dislodged from the through hole 31211 due to negative pressure suction, the top of the metal frame 3131 abuts against the lower side of the abutment ring 3122, reducing the probability of the filter screen 313 falling off.

[0042] The implementation principle of Example 1 is as follows: The negative pressure mechanism 2 is always in working state, and the controller 42 controls the two control valves 41 to open and close alternately; when there are few particles in the hopper 31, the counterweight 3114 pulls the sealing tongue 3111 to rotate upward to press the discharge port of the hopper 31, the control valve 41 opens, the hopper 31 is in a negative pressure state, and the sealing tongue 3111 is subjected to suction to further seal the space of the hopper 31; the particles are sucked into the hopper 31 from the bottom of the silo 1 through the suction pipe 33, and are intercepted by the filter screen 313 and remain in the hopper 31; when the control valve 41 is closed, the weight of the particles in the hopper 31 overcomes the pulling force of the counterweight 3114 and pushes the sealing tongue 3111 to rotate and open, and the particles fall into the silo 1 through the discharge pipe 32, thereby realizing the circulation and homogenization of the particles; Since the mounting block 3121, the abutment ring 3122 and the metal frame 3131 are all made of metal and have a certain deformation capability, the metal frame 3131 can be pushed into the gap between the mounting block 3121 and the abutment ring 3122 after the hopper 31 is opened, and then pushed further into the through hole 31211, thereby realizing the installation of the filter screen 313.

[0043] Example 2 Reference Figure 5 and Figure 6 The difference between this embodiment and Embodiment 1 lies in the installation method of the filter screen 313. The metal frame 3131 has mounting grooves 31311 distributed circumferentially, each corresponding to a mounting block 3121, for the mounting blocks 3121 to be embedded. Each side wall of the mounting groove 31311 has a snap-fit ​​groove 31312, and the mounting block 3121 has snap-fit ​​blocks 31212, which are embedded one-to-one in the snap-fit ​​grooves 31312 to fix the mounting block 3121 within the mounting groove 31311. To facilitate the snap-fit ​​blocks 31212 being snapped into the snap-fit ​​grooves 31312, the snap-fit ​​blocks 31212 have guide surfaces 31213.

[0044] The implementation principle of Example 2 is as follows: The negative pressure mechanism 2 is always in working state, and the controller 42 controls the two control valves 41 to open and close alternately; when there are few particles in the hopper 31, the counterweight 3114 pulls the sealing tongue 3111 to rotate upward to press the discharge port of the hopper 31, the control valve 41 opens, the hopper 31 is in a negative pressure state, and the sealing tongue 3111 is subjected to suction to further seal the space of the hopper 31; the particles are sucked into the hopper 31 from the bottom of the silo 1 through the suction pipe 33, and are intercepted by the filter screen 313 and remain in the hopper 31; when the control valve 41 is closed, the weight of the particles in the hopper 31 overcomes the pulling force of the counterweight 3114 and pushes the sealing tongue 3111 to rotate and open, and the particles fall into the silo 1 through the discharge pipe 32, thereby realizing the circulation and homogenization of the particles; Since both the mounting block 3121 and the metal frame 3131 are made of metal and have a certain degree of deformation capability, the mounting groove 31311 can be aligned with the mounting block 3121 and the metal frame 3131 can be pushed towards the side closer to the mounting block 3121, so that the snap-fit ​​block 31212 can be snapped into the snap-fit ​​groove 31312, thereby realizing the installation of the filter screen 313.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A particle homogenization device, characterized in that: It includes a hopper (1), a circulation mechanism (3) and a negative pressure mechanism (2). The circulation mechanism (3) includes a hopper (31), a discharge pipe (32), a suction pipe (33) and an air extraction pipe (34). The hopper (31) is installed on the top of the silo (1), and a filter screen (313) is provided inside the hopper (31). The hopper (31) is provided with a discharge valve (311) at the discharge port. The two ends of the feeding pipe (32) are respectively connected to the silo (1) and the hopper (31); One end of the suction pipe (33) is connected to the bottom of the hopper (1), and the other end is connected to the hopper (31). The connection between the suction pipe (33) and the hopper (31) is located on the lower side of the filter screen (313). One end of the suction pipe (34) is connected to the top of the hopper (31), and the other end is connected to the negative pressure mechanism (2).

2. The particle homogenization device according to claim 1, characterized in that: The discharge valve (311) includes a sealing tongue (3111) rotatably connected to the inner wall of the hopper (31).

3. The particle homogenization device according to claim 2, characterized in that: The discharge valve (311) also includes a counterweight (3114) disposed in the hopper (31) and a pull rope (3113) connecting the sealing tongue (3111) and the counterweight (3114). A lifting rod (3112) extending laterally is fixedly connected to the inner wall of the hopper (31), and the pull rope (3113) rests on the lifting rod (3112).

4. The particle homogenization device according to claim 1, characterized in that: It also includes a controller (42), and the number of circulation mechanisms (3) is two sets. The hoppers (31) of the two sets of circulation mechanisms (3) are connected to the negative pressure mechanism (2) through their respective air extraction pipes (34). Both air extraction pipes (34) are equipped with control valves (41), and the control valves (41) and the controller (42) are electrically connected.

5. The particle homogenization device according to claim 1, characterized in that: The filter (313) includes a metal frame (3131) and a filter body (3132) fixedly connected to the metal frame (3131). The inner wall of the hopper (31) is provided with an installation assembly (312) for mounting the metal frame (3131). The installation assembly (312) includes a plurality of installation blocks (3121) that are spaced apart along the circumference of the hopper (31) and fixedly connected to the inner wall of the hopper (31).

6. The particle homogenization device according to claim 5, characterized in that: The mounting block (3121) is provided with a through hole (31211) for the metal frame (3131) to pass through, and the through hole (31211) passes through the top side of the mounting block (3121).

7. The particle homogenization device according to claim 6, characterized in that: The mounting assembly (312) further includes an abutment ring (3122) fixedly connected to the inner wall of the hopper (31), the abutment ring (3122) being located on the top side of the mounting block (3121), and the distance between the abutment ring (3122) and the mounting block (3121) being less than the thickness of the metal frame (3131).

8. The particle homogenization device according to claim 5, characterized in that: The metal frame (3131) has mounting grooves (31311) distributed circumferentially, which correspond one-to-one with the mounting block (3121).

9. The particle homogenization device according to claim 8, characterized in that: The mounting groove (31311) has a snap-fit ​​groove (31312) on its side wall, and the mounting block (3121) has snap-fit ​​blocks (31212) on both sides that correspond one-to-one with the snap-fit ​​groove (31312).

10. The particle homogenization device according to claim 9, characterized in that: The snap-fit ​​block (31212) is provided with a guide surface (31213).

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