Grain processing pulverizer with few residues
By designing crushing boxes and crushing components in grain crushing equipment, and using gears, bevel gears and telescopic spring mechanisms, the problem of inserting the discharge hole during grain crushing is solved, and the smoothness of multiple crushing and discharge of grain is achieved. , reduce semi-finished product residues and ensure the continuity of subsequent processing.
Patent Information
- Application Number
- CN202420618329.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-03-28
AI Technical Summary
During the crushing process of existing grain crushing equipment, the grain may be stuck into the cutting hole, resulting in poor crushing effect and subsequent processing.
A grain processing crusher including crushing box and crushing components is designed. The crushing roller and rotating shaft are arranged inside and outside the crushing box. The meshing connection between the gear and bevel gear is driven to move the movable bucket and the outgoing hopper, using telescopic springs and The cam mechanism avoids grain blockage, ensures smooth discharge of grain, and further treats residues through secondary crushing rollers.
It effectively reduces the residues of semi-finished products in grain, avoids grain blockage, and ensures the smooth discharge of grain and the continuity of subsequent processing.
Smart Images

Figure CN222342970U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grain processing technology, specifically to a grain crusher with low residue. Background Technology
[0002] Grains refer to all plant seeds used in cooking, and can also be broadly termed "cereals." Grain crops are rich in nutrients, mainly protein, vitamins, dietary fiber, fat, and starch. In ancient times, "grain" was used for traveling and "food" for living. Later, it also came to refer to raw and processed grains such as cereals, beans, and tubers used for food.
[0003] Publication number CN216605441U discloses a grain crushing device for grain processing. This device features a first electric telescopic rod and a crushing roller, which, in conjunction with a crushing plate, perform secondary crushing to improve the crushing effect. The crushed grain falls into a collection box through a discharge hole inside the crushing plate. The crushed shells are discharged from the discharge port by a pusher plate driven by a second electric telescopic rod. However, this patent still has the following problems in actual use:
[0004] The system is equipped with a first electric telescopic rod and a crushing roller, which work together with the crushing plate to further crush the grain, thus improving the crushing effect. The crushed grain falls into the collection box through the discharge hole inside the crushing plate. However, in actual use, the grain is crushed a second time by the crushing roller. While the crushing roller is crushing the grain, the grain is subjected to a certain pressure, which may cause the grain to get stuck inside the discharge hole, thus affecting the subsequent processing of the grain.
[0005] A grain pulverizer with low residue is proposed to address the problems mentioned above. Utility Model Content
[0006] The purpose of this invention is to provide a grain crusher with low residue, in order to solve the problem mentioned in the background art. Currently, the crusher is equipped with a first electric telescopic rod and a crushing roller, which work together with the crushing plate to crush the grain again to improve the crushing effect. The crushed grain falls into the collection box through the discharge hole opened inside the crushing plate. However, in actual use, the grain is crushed a second time by the crushing roller. At the same time as the crushing roller crushes the grain, the grain is subjected to a certain pressure and may get stuck inside the discharge hole, which will affect the subsequent processing of the grain.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a grain pulverizer with low residue, comprising a pulverizing chamber;
[0008] The top of the crushing box is connected to a feed inlet;
[0009] Also includes:
[0010] The grinding chamber is equipped with grinding components both inside and outside;
[0011] The crushing assembly includes crushing rollers that are symmetrically rotated and connected to the upper part of the crushing box via bearings. One end of each crushing roller passes through the crushing box and is fixedly mounted with a first gear. The two first gears are meshed and connected. A fixed frame is fixedly mounted on the upper side of one side of the crushing box. A first motor is fixedly mounted inside the fixed frame. The output end of the first motor is fixedly connected to one side of the crushing roller. A movable bucket is provided inside the crushing box below the two crushing rollers. Several filter holes are opened through one side of the bottom of the movable bucket.
[0012] One end of the crushing roller is fixedly mounted with a rotating shaft, which is rotatably connected to the crushing box via a bearing. A support frame is fixedly mounted on the outside of the crushing box below the rotating shaft. A rotating rod is rotatably connected inside the support frame via a bearing. A first bevel gear is fixedly mounted on one end of the rotating shaft, and a second bevel gear is fixedly mounted on the top of the rotating rod. The second bevel gear meshes with the first bevel gear.
[0013] Preferably, the side of the rotating rod near the second bevel gear and the side of the rotating shaft near the first bevel gear are rotatably connected by a bearing to a limiting frame. A cam is fixedly installed at the bottom of the rotating rod, and movable rods are symmetrically installed on one side of the movable bucket. Both movable rods are slidably connected to the crushing box. A telescopic spring is sleeved on the outer side of each of the two movable rods. One end of the telescopic spring is fixedly connected to the crushing box, and the other end of the telescopic spring is fixedly installed with a mounting plate. The mounting plate is fixedly connected to the two movable rods, and the cam is slidably connected to the mounting plate.
[0014] Preferably, a support plate is fixedly installed inside the crushing box on the side below the movable hopper, and a support rod is fixedly installed on the bottom side of the movable hopper. A fixing sleeve is fixedly installed at the bottom of the support rod, and a fixing rod is slidably connected inside the fixing sleeve. Fixing blocks are fixedly installed at both ends of the fixing rod, and the fixing blocks are fixedly connected to the support rod. Baffles are symmetrically installed on the upper outside of the support rod.
[0015] Preferably, a guide hopper is fixedly installed inside the crushing box below the support rod, and a box body is connected through one side of the crushing box. A discharge port is connected through one side of the bottom of the box body. Rotating rollers are symmetrically connected to the bottom of the box body via bearings. A guide plate is fixedly installed on one side of the box body. One end of each of the two rotating rollers passes through the box body and is fixedly installed with a second gear. The two second gears are meshed together. A second motor is fixedly installed on one side of the box body, and the output end of the second motor is fixedly connected to one of the rotating rollers.
[0016] Preferably, the other end of the rotating roller on one side passes through the box and is fixedly installed with a turntable, and a column block is fixedly installed on one side of the turntable. A movable frame is slidably connected to the outer side of the column block, and positioning sleeves are symmetrically installed on both sides of the movable frame. Positioning rods are slidably connected inside the two positioning sleeves, and mounting blocks are fixedly installed at both ends of the positioning rods. The mounting blocks are fixedly connected to the box.
[0017] Preferably, a discharge hopper is provided at the bottom of the inside of the crushing box, and a through groove is provided on the side of the crushing box near the discharge hopper. A fixing plate is fixedly installed on one side of the discharge hopper, and a connecting rod is fixedly installed on one side of the fixing plate. The connecting rod is slidably connected to the crushing box, and the connecting rod is fixedly connected to a positioning sleeve on one side.
[0018] Preferably, a limiting rod is fixedly installed inside the crushing box below the discharge hopper, and a limiting sleeve is symmetrically slidably connected to the outside of the limiting rod. An installation rod is fixedly installed on the top of each of the two limiting sleeves, and both installation rods are fixedly connected to the discharge hopper.
[0019] Compared with the prior art, the beneficial effects of this utility model are: This grain pulverizer with low residue has pulverizing components set inside and outside the pulverizing chamber, which can pulverize the grain multiple times, reduce the residue of semi-finished products in the grain, and facilitate the discharge of grain without causing the grain to clog the filter holes, thus avoiding affecting subsequent processing. The specific details are as follows:
[0020] 1. Crushing components are installed inside and outside the crushing box. When crushing grain, the grain is fed into the crushing box through the feed inlet. The first motor on the fixed frame is started to drive the crushing roller on one side to rotate. The two first gears mesh to make the crushing roller rotate and crush the grain. The crushed grain falls to the top of the movable hopper. While the crushing roller rotates, it drives the rotating shaft to rotate. The rotating shaft drives the rotating rod on the support frame to rotate through the meshing of the first bevel gear and the second bevel gear. This drives the cam to rotate. After the cam rotates, it slides against the mounting plate and moves the mounting plate. This drives the movable rod to slide on the crushing box and compress the telescopic spring. The continuous rotation of the cam drives the movable hopper to move back and forth. While the movable hopper moves back and forth, the fixed sleeve slides on the fixed rod through the support rod to support the movement of the movable hopper. The qualified crushed grain falls into the discharge hopper through the filter holes and guide hopper on the movable hopper and is discharged through the discharge hopper. The grain that does not meet the standard enters the box under the action of the guide plate. This prevents the grain from clogging the movable hopper during the crushing process and avoids affecting subsequent use.
[0021] 2. After non-compliant grain enters the chamber, the second motor is activated to drive the rotating roller on one side to rotate. Through the meshing of two second gears, the two rotating rollers rotate, which can perform secondary crushing of the grain, reducing the residue of semi-finished products in the grain. At the same time, the rotation of one rotating roller drives the turntable to rotate, and the rotation of the turntable drives the column block to rotate in a circle. The column block can drive the movable frame to move through a sliding connection with the movable frame. While the movable frame is moving, the positioning sleeve slides outside the positioning rod, thus limiting the movement of the movable frame. The rotation of the turntable can cause the movable frame to move back and forth, which in turn causes the positioning sleeve below to move back and forth, driving the connecting rod to move back and forth. This, in turn, drives the discharge hopper to move back and forth in the crushing chamber through the fixed plate. While the discharge hopper is moving, the installation rod drives the limiting sleeve to slide outside the limiting rod, limiting the movement of the discharge hopper, thus preventing grain from falling onto the discharge hopper and accumulating, affecting the discharge. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the front structure of this utility model;
[0023] Figure 2 This is a front sectional view of the present invention.
[0024] Figure 3 This is a side view of the present invention.
[0025] Figure 4 This utility model Figure 2 Enlarged structural diagram of region A in the middle;
[0026] Figure 5 This utility model Figure 2 Enlarged structural diagram of region B in the middle;
[0027] Figure 6 This utility model Figure 1 A magnified structural diagram of region C in the middle.
[0028] In the diagram: 1. Crushing box; 101. Feed inlet; 2. Crushing assembly; 201. Crushing roller; 202. First gear; 203. Fixing frame; 204. First motor; 205. Movable hopper; 206. Rotating shaft; 207. Support frame; 208. Rotating rod; 209. First bevel gear; 210. Second bevel gear; 211. Limiting frame; 212. Cam; 213. Movable rod; 214. Telescopic spring; 215. Mounting plate; 216. Support plate; 217. Support rod; 218. Fixing sleeve; 219. Fixing rod; 220. Fixing block; 221. Baffle; 222. Guide hopper; 223. Box body; 2231. Guide plate; 224. Discharge port; 225. Rotating roller; 226. Second gear; 227. Second motor; 228. Turntable; 229. Column block; 230. Movable frame; 231. Positioning sleeve; 232. Positioning rod; 233. Mounting block; 234. Connecting rod; 235. Discharge hopper; 236. Mounting rod; 237. Limiting sleeve; 238. Limiting rod; 239. Fixing plate. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] Please see Figure 1-6This utility model provides a technical solution: a grain pulverizer with low residue, comprising a pulverizing box 1, with a feed inlet 101 penetrating the top of the pulverizing box 1, and further comprising: pulverizing components 2 disposed inside and outside the pulverizing box 1, wherein the pulverizing components 2 include pulverizing rollers 201 symmetrically rotatably connected to the upper part of the pulverizing box 1 via bearings, and one end of each of the two pulverizing rollers 201 passing through the pulverizing box 1 and fixedly mounted with a first gear 202, and the two first gears 202 meshing together; a fixing frame 203 is fixedly mounted on the upper side of one side of the pulverizing box 1, and a first motor 204 is fixedly mounted inside the fixing frame 203, and the output end of the first motor 204 is fixedly connected to one side of the pulverizing roller 201; and the interior of the pulverizing box 1 is located between the two pulverizing rollers 201. Below the 01, there is a movable hopper 205, and several filter holes are opened through one side of the bottom of the movable hopper 205. The other end of one crushing roller 201 is fixedly installed with a rotating shaft 206, and the rotating shaft 206 is rotatably connected to the crushing box 1 through a bearing. The outside of the crushing box 1 is fixedly installed below the rotating shaft 206, and the inside of the support frame 207 is rotatably connected to a rotating rod 208 through a bearing. One end of the rotating shaft 206 is fixedly installed with a first bevel gear 209, and the top of the rotating rod 208 is fixedly installed with a second bevel gear 210. The second bevel gear 210 meshes with the first bevel gear 209, which can crush the grain multiple times, reduce the semi-finished product residue in the grain, and facilitate the discharge of the grain.
[0031] The side of the rotating rod 208 near the second bevel gear 210 and the side of the rotating shaft 206 near the first bevel gear 209 are rotatably connected to the limit frame 211 via bearings. A cam 212 is fixedly installed at the bottom of the rotating rod 208. Two movable rods 213 are symmetrically installed on one side of the movable bucket 205, and both movable rods 213 are slidably connected to the crushing box 1. A telescopic spring 214 is sleeved on the outer side of each of the two movable rods 213. One end of the telescopic spring 214 is fixedly connected to the crushing box 1, and the other end of the telescopic spring 214 is fixedly installed with a mounting plate 215. The mounting plate 215 is fixedly connected to the two movable rods 213, and the cam 212 is also fixedly connected to the mounting plate 215. The 15 sliding connection prevents the grain from clogging the movable hopper 205 during grain crushing and processing, thus avoiding impact on subsequent use. Inside the crushing box 1, a support plate 216 is fixedly installed on one side below the movable hopper 205, and a support rod 217 is fixedly installed on one side of the bottom of the movable hopper 205. A fixing sleeve 218 is fixedly installed at the bottom of the support rod 217, and a fixing rod 219 is slidably connected inside the fixing sleeve 218. Fixing blocks 220 are fixedly installed at both ends of the fixing rod 219, and the fixing blocks 220 are fixedly connected to the support rod 217. Furthermore, baffles 221 are symmetrically installed on the upper part of the support rod 217 to support the movement of the movable hopper 205.
[0032] Inside the crushing box 1, below the support rod 217, a guide hopper 222 is fixedly installed. A box body 223 is connected through one side of the crushing box 1, and a discharge port 224 is connected through one side of the bottom of the box body 223. Rotating rollers 225 are symmetrically connected to the lower interior of the box body 223 via bearings. A guide plate 2231 is fixedly installed on one side of the interior of the box body 223. One end of each of the two rotating rollers 225 passes through the box body 223 and is fixedly equipped with a second gear 226. The two parts are connected by a meshing connection, and a second motor 227 is fixedly installed on one side of the housing 223. The output end of the second motor 227 is fixedly connected to a rotating roller 225 on one side, which can perform secondary crushing of grain. The other end of the rotating roller 225 passes through the housing 223 and is fixedly installed with a turntable 228. A column block 229 is fixedly installed on one side of the turntable 228, and a movable frame 230 is slidably connected to the outer side of the column block 229. Positioning sleeves 231 are symmetrically installed on both sides of the movable frame 230. The internal components of the crushing box 223 are slidably connected to positioning rods 232, and mounting blocks 233 are fixedly installed at both ends of the positioning rods 232. The mounting blocks 233 are fixedly connected to the box body 223, so that the rotation of the rotating roller 225 can drive the movable frame 230 to move back and forth. A discharge hopper 235 is provided at the bottom of the interior of the crushing box 1, and a through groove is opened on the side of the crushing box 1 near the discharge hopper 235. A fixing plate 239 is fixedly installed on one side of the discharge hopper 235, and a connecting rod 234 is fixedly installed on one side of the fixing plate 239. The connecting rod 234 is slidably connected to the crushing box 1, and the connecting rod 234 is fixedly connected to the positioning sleeve 231 on one side, so that the discharge hopper 235 can reciprocate. The inside of the crushing box 1 is fixedly installed below the discharge hopper 235. The limiting rod 238 is symmetrically slidably connected to the outside of the limiting rod 238, and the top of the two limiting sleeves 237 is fixedly installed with the mounting rod 236. The two mounting rods 236 are fixedly connected to the discharge hopper 235 to support and limit the movement of the discharge hopper 235.
[0033] Working principle: Before using this type of grain pulverizer with low residue, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 6As shown, a crushing assembly 2 is installed inside and outside the crushing box 1. When crushing grain, the grain is fed into the crushing box 1 through the feed inlet 101. The first motor 204 on the fixed frame 203 is started to drive the crushing roller 201 on one side to rotate. The meshing of the two first gears 202 causes the crushing roller 201 to rotate and crush the grain. The crushed grain falls onto the top of the movable hopper 205. While the crushing roller 201 is rotating, it drives the rotating shaft 206 to rotate. The rotating shaft 206 drives the rotating rod 208 to rotate on the support frame 207 through the meshing of the first bevel gear 209 and the second bevel gear 210. This drives the cam 212 to rotate. After the cam 212 rotates, it interacts with the mounting plate 215. The sliding mechanism can lift the mounting plate 215 to move, causing the movable rod 213 to slide on the crushing box 1 and compress the telescopic spring 214. This allows the cam 212 to rotate continuously, driving the movable bucket 205 to move back and forth. As the movable bucket 205 moves back and forth, the support rod 217 drives the fixed sleeve 218 to slide on the fixed rod 219, supporting the movement of the movable bucket 205. This allows the crushed and qualified grain to fall through the filter holes on the movable bucket 205 and the guide hopper 222 onto the discharge hopper 235 and be discharged through the discharge hopper 235. Grain that does not meet the standards enters the box 223 under the action of the guide plate 2231. This prevents the grain from clogging the movable bucket 205 during the crushing and processing process, thus avoiding affecting subsequent use.
[0034] After substandard grain enters the container 223, the second motor 227 is activated, driving the rotating roller 225 on one side to rotate. Through the meshing of two second gears 226, both rotating rollers 225 rotate, allowing for secondary crushing of the grain and reducing the residue of semi-finished products. Simultaneously, the rotation of the rotating roller 225 on one side drives the turntable 228 to rotate, which in turn drives the column block 229 to rotate circumferentially. The column block 229, through its sliding connection with the movable frame 230, can move the movable frame 230. As the movable frame 230 moves, it simultaneously moves the positioning sleeve 231 to its designated position. The external sliding of rod 232 limits the movement of movable frame 230. The rotation of turntable 228 allows movable frame 230 to reciprocate, which in turn causes lower positioning sleeve 231 to drive connecting rod 234 to reciprocate. This, in turn, causes fixed plate 239 to drive discharge hopper 235 to reciprocate in crushing box 1. While the discharge hopper 235 is moving, mounting rod 236 drives limiting sleeve 237 to slide outside limiting rod 238, limiting the movement of discharge hopper 235. This prevents grain from falling onto discharge hopper 235 and accumulating, thus affecting discharge.
[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A pulverizer for grain processing with little residue, comprising a pulverizing box (1); The top of the crushing box (1) is connected through a feed port (101); It is characterized in that Also includes: The crushing box (1) is provided with crushing components (2) inside and outside; The pulverizing assembly (2) comprises pulverizing rollers (201) symmetrically rotatably connected to the upper part of the pulverizing box (1) via bearings, one end of each of the two pulverizing rollers (201) passes through the pulverizing box (1) and is fixedly mounted with a first gear (202), and the two first gears (202) are meshed and connected, a fixing frame (203) is fixedly mounted on the upper part of one side of the pulverizing box (1), a first motor (204) is fixedly mounted inside the fixing frame (203), and an output end of the first motor (204) is fixedly connected to one side of the pulverizing rollers (201), and a movable bucket (205) is provided inside the pulverizing box (1) below the two pulverizing rollers (201), and a plurality of filter holes are provided through one side of the bottom of the movable bucket (205); The other end of the crushing roller (201) on one side is fixedly mounted with a rotating shaft (206), and the rotating shaft (206) is rotatably connected to the crushing box (1) via a bearing, and a support frame (207) is fixedly mounted on the outer side of the crushing box (1) below the rotating shaft (206), and a rotating rod (208) is rotatably connected inside the support frame (207) via a bearing, and a first bevel gear (209) is fixedly mounted on one end of the rotating shaft (206), and a second bevel gear (210) is fixedly mounted on the top of the rotating rod (208), and the second bevel gear (210) is meshingly connected to the first bevel gear (209).
2. A grain processing pulverizer with little residue according to claim 1, characterized in that: The side of the rotating rod (208) outside close to the second bevel gear (210) and the side of the rotating shaft (206) outside close to the first bevel gear (209) are rotatably connected to the limiting frame (211) through a bearing, and a cam (212) is fixedly installed at the bottom of the rotating rod (208), and a movable rod (213) is symmetrically installed on one side of the movable bucket (205), and the two movable rods (213) are both slidably connected to the crushing box (1), and a telescopic spring (214) is sleeved on one side of the outside of the two movable rods (213), and one end of the telescopic spring (214) is fixedly connected to the crushing box (1), and a mounting plate (215) is fixedly installed on the other end of the telescopic spring (214), and the mounting plate (215) is fixedly connected to the two movable rods (213), and the cam (212) is slidably connected to the mounting plate (215).
3. The grain processing pulverizer with less residue according to claim 1, characterized in that: A support plate (216) is fixedly installed on one side of the crushing box (1) below the movable bucket (205), and a support rod (217) is fixedly installed on one side of the bottom of the movable bucket (205), and a fixing sleeve (218) is fixedly installed on the bottom of the support rod (217), and a fixing rod (219) is slidably connected inside the fixing sleeve (218), and fixing blocks (220) are fixedly installed on both ends of the fixing rod (219), and the fixing blocks (220) are fixedly connected to the support rod (217), and a baffle (221) is symmetrically installed on the outside of the support rod (217).
4. The grain processing pulverizer with less residue according to claim 3, characterized in that: A material guide hopper (222) is fixedly installed inside the crushing box (1) below the support rod (217), and a box body (223) is connected through one side of the crushing box (1), and a discharge port (224) is connected through one side of the bottom of the box body (223), and rotating rollers (225) are symmetrically rotatably connected to the lower part of the box body (223) through bearings, and a material guide plate (2231) is fixedly installed on one side of the box body (223), and one end of the two rotating rollers (225) passes through the box body (223) and is fixedly installed with a second gear (226), and the two second gears (226) are meshed and connected, and a second motor (227) is fixedly installed on one side of the box body (223), and the output end of the second motor (227) is fixedly connected to one side of the rotating roller (225).
5. The grain processing pulverizer with less residue according to claim 4, characterized in that: The other end of the rotating roller (225) on one side passes through the box (223) and is fixedly mounted with a turntable (228), and a column block (229) is fixedly mounted on one side of the turntable (228), and a movable frame (230) is slidably connected to an outer side of the column block (229), and positioning sleeves (231) are symmetrically mounted on both sides of the movable frame (230), and positioning rods (232) are slidably connected to the inside of the two positioning sleeves (231), and mounting blocks (233) are fixedly mounted on both ends of the positioning rods (232), and the mounting blocks (233) are fixedly connected to the box (223).
6. The grain processing pulverizer with less residue according to claim 5, characterized in that: A discharge hopper (235) is provided at the lower part of the crushing box (1), and a through slot is provided through a side of the crushing box (1) close to the discharge hopper (235), and a fixing plate (239) is fixedly installed on one side of the discharge hopper (235), and a connecting rod (234) is fixedly installed on one side of the fixing plate (239), and the connecting rod (234) is slidably connected to the crushing box (1), and the connecting rod (234) is fixedly connected to a positioning sleeve (231) on one side.
7. A grain processing pulverizer with little residue according to claim 6, characterized in that: A limit rod (238) is fixedly installed inside the crushing box (1) below the discharge hopper (235), and the outside of the limit rod (238) is symmetrically slidably connected to the limit sleeve (237), and the tops of the two limit sleeves (237) are fixedly installed with mounting rods (236), and the two mounting rods (236) are fixedly connected to the discharge hopper (235).
Citation Information
Patent Citations
Grain crushing equipment for grain processing
CN216605441U