A pulverizer provided with a circulating crushing structure
By combining a screening structure and a spiral conveyor, the problem of separating wood crushed products of different sizes in a circulating crusher is solved, achieving efficient crushing and screening, preventing equipment blockage, and improving the quality of wood crushing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QUANZHOU XIANGRUI MASCH CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-14
AI Technical Summary
Existing circulating shredders have difficulty effectively separating crushed products of different sizes during the wood recycling process.
The screening structure inside the screening box includes a screening frame and intercepting rods. Through the cooperation of the drive wheel and the eccentric rod, the screening frame moves horizontally back and forth inside the screening box. Combined with the pulley, it ensures stable vibration. Smaller particles fall through the gaps in the intercepting rods, while larger particles are intercepted, guided to the screening port, and discharged through the corrugated pipe. With the help of the spiral conveyor rod, the wood is circulated, screened, and crushed in a secondary manner.
It achieves effective separation of wood crushing products, prevents clogging, ensures dynamic sealing of the equipment, and improves crushing efficiency and uniformity of product particle size.
Smart Images
Figure CN224486138U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crusher technology, specifically a crusher equipped with a circulating crushing structure. Background Technology
[0002] Wood is one of the important raw materials for manufacturing sanitary products. Commonly used woods include coniferous trees such as pine and spruce. These woods are used to extract fluff pulp, which is one of the main materials for sanitary napkins. These woods need to be crushed before processing.
[0003] To achieve the above functions, a prior art Chinese patent (publication number: CN218359867U) discloses a circulating pulverizer. This circulating pulverizer includes a machine body, a sieve plate, and a circulating conveying mechanism. The machine body has a pulverizing chamber and a return chamber. The pulverizing chamber contains the pulverizing mechanism. The sieve plate is inclinedly disposed on the machine body and located below the pulverizing mechanism. The lower end of the sieve plate in the inclined direction extends into the return chamber. The sieve plate has several upwardly protruding arc-shaped portions, with both ends of the arc-shaped portions extending to both sides of the sieve plate. The circulating conveying mechanism is located between the top of the return chamber and the top of the pulverizing chamber to transport sanitary products from the return chamber to the pulverizing chamber. This circulating pulverizer improves the efficiency of the sieve plate in screening sanitary products.
[0004] While existing technologies can overcome the shortcomings mentioned above, other problems still exist in their operation: when existing crushers crush wood, they usually rely on a circulation structure to drive the wood to be crushed repeatedly in order to achieve the desired effect, but the circulation pipe is not convenient for separating crushed products of different sizes during the wood circulation process. Utility Model Content
[0005] The purpose of this invention is to provide a pulverizer with a circulating crushing structure to solve the problem in the background art where the circulating pipe is not convenient for separating crushed products of different sizes during the wood circulation process.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a crusher with a circulating crushing structure, including a screening box, a feed hopper fixedly connected to the top of the screening box, and a discharge port fixedly connected to the bottom of the screening box;
[0007] The screening box is equipped with a screening structure, which includes a screening frame that is slidably connected inside the screening box. The screening frame is fixedly connected with equally spaced intercepting rods. One end of the screening frame is provided with a screening port, and the bottom of the screening port is aligned with the end of the intercepting rod.
[0008] Preferably, the intercepting rods are inclinedly distributed inside the screening frame, and the end of the intercepting rod away from the screening opening is higher than the end of the intercepting rod near the screening opening, and the equally spaced intercepting rods form an inclined surface inside the screening frame.
[0009] Preferably, a corrugated pipe is fixedly connected to the end of the screening port away from the screening frame, and pulleys are rotatably connected to the top and bottom of both sides of the screening frame at equal intervals, and the pulleys are in contact with the inside of the screening box.
[0010] Preferably, an eccentric rod is fixedly connected to one end of the screening frame, and a drive wheel is installed on the outside of the screening box via a fixed seat. The eccentric rod is slidably connected to the inside of the drive wheel, and the drive wheel drives the screening frame to reciprocate horizontally inside the screening box via the eccentric rod.
[0011] Preferably, a conveying pipe is provided on one side of the screening box, and a circulation inlet is fixedly connected to the bottom of the conveying pipe, and the circulation inlet and the end of the corrugated pipe away from the screening port are connected to each other.
[0012] Preferably, a circulation outlet is fixedly connected to the top of the conveying pipe, and the end of the circulation outlet away from the conveying pipe is connected to the inside of the feeding hopper. A motor-driven spiral conveying rod is rotatably connected inside the conveying pipe.
[0013] Preferably, a gearbox is installed on the outside of the screening box, and two interlocking crushing rollers are rotatably connected inside the feed hopper. The input end of the gearbox is driven by a motor, and the input end of the gearbox is connected to the crushing rollers and the drive wheel respectively. The crushing rollers and the drive wheel share the power of the gearbox.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This type of crusher features a circulating crushing structure. Through the cooperation of a drive wheel and an eccentric rod, the screening frame reciprocates horizontally inside the screening box. With the help of pulleys, stable vibration is ensured. Smaller wood particles fall directly to the discharge port through the gaps between the intercepting rods, while larger wood particles are blocked by the intercepting rods and guided to the screening port. They are then discharged through the corrugated pipe or enter the subsequent circulation, achieving separation of wood particles by size. The reciprocating motion of the screening frame drives the frame and the corrugated pipe to vibrate, preventing blockage. At the same time, the corrugated pipe maintains the dynamic sealing and anti-blockage effect of the equipment in the vibration environment, preventing material leakage.
[0016] The bottom of the conveying pipe is connected to a corrugated pipe for circulation inlet, and the top is connected to the feed hopper through circulation outlet. Inside, there is a spiral conveyor rod that vertically transports larger wood particles. After the wood is discharged through the screening port, the spiral conveyor rod pushes it vertically back to the feed hopper for secondary crushing, realizing the circulation screening and crushing of wood until it meets the requirements. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a schematic cross-sectional view of the present invention.
[0019] Figure 3 This is a schematic diagram of the screening frame structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the spiral transport rod structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the corrugated pipe structure of this utility model;
[0022] Figure 6 This is a schematic diagram of the crushing roller structure of this utility model.
[0023] In the diagram: 1. Screening box; 2. Feed hopper; 3. Discharge port; 4. Screening frame; 5. Interceptor bar; 6. Screening port; 7. Corrugated pipe; 8. Pulley; 9. Eccentric rod; 10. Drive wheel; 11. Conveying pipe; 12. Circulation inlet; 13. Circulation outlet; 14. Spiral conveyor bar; 15. Gearbox; 16. Crushing roller. Detailed Implementation
[0024] 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.
[0025] Example 1: Please refer to Figure 1 - Figure 3This utility model provides the following technical solution: A crusher with a circulating crushing structure includes a screening box 1, a feed hopper 2 fixedly connected to the top of the screening box 1, and a discharge port 3 fixedly connected to the bottom of the screening box 1; a screening structure is provided inside the screening box 1, the screening structure includes a screening frame 4 slidably connected inside the screening box 1, and equally spaced intercepting rods 5 fixedly connected inside the screening frame 4; a screening port 6 is provided at one end of the screening frame 4, and the bottom of the screening port 6 is aligned with the end of the intercepting rod 5; the intercepting rods 5 are inclinedly distributed inside the screening frame 4, and the end of the intercepting rod 5 away from the screening port 6 is... The screen frame 4 has an inclined surface formed by intercepting rods 5 that are higher than the end of the screen opening 6 and are evenly distributed inside the screen frame 4; the end of the screen opening 6 away from the screen frame 4 is fixedly connected to a corrugated pipe 7; the top and bottom sides of the screen frame 4 are rotatably connected to pulleys 8 that are evenly distributed, and the pulleys 8 are in contact with the inside of the screen box 1; one end of the screen frame 4 is fixedly connected to an eccentric rod 9; a drive wheel 10 is installed on the outside of the screen box 1 through a fixed seat, and the eccentric rod 9 is slidably connected inside the drive wheel 10; the drive wheel 10 drives the screen frame 4 to reciprocate horizontally inside the screen box 1 through the eccentric rod 9.
[0026] Inside the wood feed hopper 2, two interlocking crushing rollers 16 shear and compress the wood to achieve crushing. The wood that has undergone preliminary crushing enters the screening box 1 and first falls onto the screening frame 4. The screening frame 4 is slidably connected to the inside of the screening box 1 by pulleys 8. These pulleys 8 are evenly distributed on both sides, top and bottom of the screening frame 4 to ensure that the screening frame 4 can move smoothly and horizontally within the screening box 1. Inside the screening frame 4, there are evenly distributed intercepting rods 5. The intercepting rods 5 are inclined to form a continuous slope, guiding the wood to the screening port 6. At the same time, particle size separation is achieved through the gaps between the intercepting rods 5.
[0027] The drive wheel 10 is mounted on the outside of the screening box 1 via a fixed seat. When the drive wheel 10 rotates, it drives the eccentric rod 9 to reciprocate, thereby pushing the screening frame 4 to reciprocate horizontally inside the screening box 1. This motion causes the wood to vibrate and tumble continuously on the screening frame 4. Smaller wood particles fall through the gaps between the intercepting rods 5 and are finally discharged from the discharge port 3 at the bottom of the screening box 1.
[0028] Larger wood particles are blocked by the interceptor bar 5 and moved towards the screening port 6 under the guidance of the inclined plane. The screening port 6 is located at one end of the screening frame 4, and its bottom is aligned with the end of the interceptor bar 5 to ensure that the wood enters the corrugated pipe 7 smoothly. The end of the screening port 6 away from the screening frame 4 is fixedly connected to the corrugated pipe 7. The corrugated pipe 7 is flexible and can adapt to the reciprocating motion of the screening frame 4, and guides the larger wood particles out of the screening box 1. The reciprocating motion of the screening frame drives the corrugated pipe 7 to vibrate to prevent blockage. At the same time, the corrugated pipe 7 can maintain the dynamic sealing and anti-blocking effect of the equipment in the vibration environment to prevent material leakage.
[0029] Example 2: Based on Example 1, please refer to... Figure 4 - Figure 6 The following structure is also disclosed: a conveying pipe 11 is provided on one side of the screening box 1, and a circulation inlet 12 is fixedly connected to the bottom of the conveying pipe 11, and the circulation inlet 12 and the end of the corrugated pipe 7 away from the screening port 6 are connected to each other; a circulation outlet 13 is fixedly connected to the top of the conveying pipe 11, and the end of the circulation outlet 13 away from the conveying pipe 11 is connected to the inside of the feed hopper 2, and a spiral conveying rod 14 driven by a motor is rotatably connected inside the conveying pipe 11; a gearbox 15 is installed on the outside of the screening box 1, and two interlocking crushing rollers 16 are rotatably connected inside the feed hopper 2, the input end of the gearbox 15 is driven by a motor, and the input end of the gearbox 15 is connected to the crushing rollers 16 and the drive wheel 10 respectively, and the crushing rollers 16 and the drive wheel 10 share the power of the gearbox 15.
[0030] A circulation inlet 12 is fixedly connected to the bottom of the conveying pipe 11. The circulation inlet 12 is connected to the end of the corrugated pipe 7 away from the screening port 6. A circulation outlet 13 is fixedly connected to the top of the conveying pipe 11. The end of the circulation outlet 13 away from the conveying pipe 11 communicates with the inside of the feed hopper 2. A spiral conveying rod 14 is rotatably connected inside the conveying pipe 11. The spiral conveying rod 14 is driven by an external motor and is responsible for the vertical transport of wood. A gearbox 15 is installed on the outside of the screening box 1. Two interlocking crushing rollers 16 are rotatably connected inside the feed hopper 2. The input end of the gearbox 15 is driven by the same motor and is connected to the crushing rollers 16 and the drive wheel 10 respectively to achieve synchronous power distribution.
[0031] After initial crushing, larger wood particles are discharged from the screening port 6 through the corrugated pipe 7 and directly enter the circulation inlet 12 of the conveying pipe 11. The spiral conveying rod 14 rotates inside the conveying pipe 11, pushing the wood upward to the circulation outlet 13. Since the circulation outlet 13 is connected to the inside of the feed hopper 2, the wood is reintroduced into the feed hopper 2. Inside the feed hopper 2, two interlocking crushing rollers 16 perform secondary shearing and compression on the wood to achieve crushing. The crushed wood falls back into the screening box 1 for screening and circulation, and the large wood particles are repeatedly crushed until the particle size is qualified and then discharged from the discharge port 3.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] 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 crusher with a circulating crushing structure, comprising a screening box (1), wherein a feed hopper (2) is fixedly connected to the top of the screening box (1), and a discharge port (3) is fixedly connected to the bottom of the screening box (1); Its features are: The screening box (1) is equipped with a screening structure inside. The screening structure includes a screening frame (4) that is slidably connected inside the screening box (1). The screening frame (4) is fixedly connected with equidistantly distributed intercepting rods (5). One end of the screening frame (4) is provided with a screening port (6), and the bottom of the screening port (6) is aligned with the end of the intercepting rod (5).
2. A pulverizer with a circulating crushing structure according to claim 1, characterized in that: The intercepting rods (5) are inclined inside the screening frame (4), and the end of the intercepting rod (5) away from the screening port (6) is higher than the end of the intercepting rod (5) near the screening port (6), and the equally spaced intercepting rods (5) form an inclined surface inside the screening frame (4).
3. A pulverizer with a circulating crushing structure according to claim 1, characterized in that: A corrugated pipe (7) is fixedly connected to the end of the screening port (6) away from the screening frame (4). The top and bottom sides of the screening frame (4) are rotatably connected with pulleys (8) distributed at equal intervals, and the pulleys (8) are in contact with the inside of the screening box (1).
4. A pulverizer with a circulating crushing structure according to claim 3, characterized in that: One end of the screening frame (4) is fixedly connected to an eccentric rod (9). A drive wheel (10) is installed on the outside of the screening box (1) through a fixed seat. The eccentric rod (9) is slidably connected to the inside of the drive wheel (10). The drive wheel (10) drives the screening frame (4) to reciprocate horizontally inside the screening box (1) through the eccentric rod (9).
5. A pulverizer with a circulating crushing structure according to claim 1, characterized in that: A conveying pipe (11) is provided on one side of the screening box (1). A circulation inlet (12) is fixedly connected to the bottom of the conveying pipe (11), and the circulation inlet (12) and the end of the corrugated pipe (7) away from the screening port (6) are connected to each other.
6. A pulverizer with a circulating crushing structure according to claim 5, characterized in that: The top of the conveying pipe (11) is fixedly connected to a circulation outlet (13), and the end of the circulation outlet (13) away from the conveying pipe (11) is connected to the inside of the feed hopper (2). The inside of the conveying pipe (11) is rotatably connected to a spiral conveying rod (14) driven by a motor.
7. A pulverizer with a circulating crushing structure according to claim 6, characterized in that: A gearbox (15) is installed on the outside of the screening box (1). Two interlocking crushing rollers (16) are rotatably connected inside the feed hopper (2). The input end of the gearbox (15) is driven by a motor, and the input end of the gearbox (15) is connected to the crushing rollers (16) and the drive wheel (10) respectively. The crushing rollers (16) and the drive wheel (10) share the power of the gearbox (15).