Cat litter production ring molding granulator

Abstract

The utility model relates to the cat litter production technical field discloses a cat litter production ring die granulator, including pelletizer body and its fixed installation on the feed hopper of pelletizer body. The cat litter production ring die granulator, through the reciprocating movement of the hydraulic cylinder drive movable plate along the arc plate outer surface stability in cleaning component, drive cleaning brush to carry out physical scraping to filter hole, directly remove the adhered material, prevent the blockage, simultaneously, the airflow injection assembly that links to each other with movable plate through the spray head on the inflation pump and arc plate pipe, to filter hole area accurate injection high pressure airflow, this airflow not only can blow away the fine powder that is stirred loose by the brush, strengthens the cleaning effect, can also cool and air dry to filter hole area, reduces the adhesion phenomenon that produces because material humid heat, ensures the persistent unobstructed of screening channel, greatly reduces the production capacity loss that leads to the downtime cleaning, thereby guarantees the final forming quality of cat litter granule.

Description

Technical Field

[0001] This utility model relates to the field of cat litter production technology, specifically a ring die pellet mill for cat litter production. Background Technology

[0002] Cat litter is used by cat owners to bury their cats' feces and urine. It has good absorbency and is usually used in conjunction with a litter box. An appropriate amount of cat litter is poured into the litter box, and a trained cat will walk into the box and scatter its feces on top when it needs to relieve itself. Generally, cat litter is made by grinding paper pulp into small granules to simulate sand and provide absorbency. Some granules also use physical desiccants such as silica gel. Antibacterial agents, deodorizers, and preservatives are usually added. Cat litter will clump together when it comes into contact with water. Most cat litter will stick to the cat's paws and be carried to other places, so please clean it frequently. During the production process, cat litter requires the use of a ring die pellet mill.

[0003] In the cat litter production process, ring die pellet mills are used to crush and compress raw materials into pellets. In existing technologies, the feed hopper of pellet mills is often equipped with crushing and filtering devices, but the filter screen is prone to clogging, especially when the material has high moisture content or contains sticky components. Clogging leads to a decrease in crushing efficiency, requiring frequent shutdowns for cleaning and affecting production continuity. Therefore, we propose a ring die pellet mill for cat litter production to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a ring die pellet mill for cat litter production, which solves the problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: a ring die pellet mill for cat litter production, including a pellet mill body and a feed hopper fixedly installed on the pellet mill body. A discharge pipe is fixedly connected to the right side of the pellet mill body. A crushing roller is provided inside the feed hopper. Two guide plates are fixedly installed obliquely and symmetrically on the inner wall of the feed hopper. The intersection of the two guide plates forms a discharge channel. An arc-shaped plate is provided on the outer side of the crushing roller. A plurality of filter holes are opened on the arc-shaped plate. A vibration motor is provided on the outer side of the arc-shaped plate. A cleaning component for cleaning the outer surface of the arc-shaped plate and an airflow jet component for auxiliary cleaning are also provided on the feed hopper. The cleaning assembly includes a movable plate and a cleaning brush. The movable plate is reciprocally movable on the outside of the arc-shaped plate via a drive mechanism, and the cleaning brush is fixedly installed on the side of the movable plate close to the arc-shaped plate. The airflow jet assembly includes an arc-shaped plate tube, nozzles, and an air pump. The arc-shaped plate tube is fixedly connected to the outer wall of the movable plate via a connecting plate, and has several nozzles facing the filter holes. The arc-shaped plate tube is connected to an air pump fixedly installed on the outer wall of one end of the arc-shaped plate tube via a pipe.

[0006] Furthermore, the crushing rollers are a pair of rollers, and one end of the crushing rollers is fixedly connected to a drive motor via a transmission shaft. The drive motor is fixedly installed on the outer wall of the feed hopper, and the two crushing rollers are provided with intermeshing crushing teeth on their outer sides.

[0007] Furthermore, the driving mechanism includes a hydraulic cylinder, which is fixedly installed on the outside of the feed hopper, and the output end of the hydraulic cylinder passes through the outer wall of the feed hopper and is fixedly connected to the outer wall of the movable plate.

[0008] Furthermore, a number of T-shaped rods are fixedly connected to the side of the movable plate facing the arc-shaped plate, and a connecting spring is fixedly connected to the number of T-shaped rods. One end of the connecting spring is fixedly connected to the inner wall of the groove opened at the bottom end of the cleaning brush.

[0009] Furthermore, T-shaped sliders are fixedly connected to the inner walls of both ends of the movable plate, and T-shaped grooves for sliding the T-shaped sliders are correspondingly opened on the outer wall of the arc plate.

[0010] Furthermore, the guide plates are symmetrically inclined, and the feeding channel at their intersection is directly opposite the feeding area of ​​the crushing roller; the vibration motor is fixedly installed at the center of the outer side of the arc plate.

[0011] The beneficial effects of this utility model are: 1. This cat litter production ring die pellet mill uses a hydraulic cylinder in the cleaning component to drive a movable plate to reciprocate stably along the outer surface of an arc-shaped plate. This movement causes cleaning brushes to physically scrape the filter holes, directly removing adhering material and preventing blockage. Simultaneously, an air jet component linked to the movable plate uses an air pump and nozzles on the arc-shaped plate tube to precisely spray high-pressure air into the filter hole area. This airflow not only blows away the fine powder loosened by the brushes, enhancing the cleaning effect, but also cools and dries the filter hole area, reducing adhesion caused by material moisture and heat. This organic combination of mechanical and pneumatic cleaning ensures the continuous unobstructed flow of the screening channel, significantly reducing production capacity loss due to downtime for cleaning, and providing raw materials with qualified particle size and uniform state for further pelletizing processes, thereby ensuring the final molding quality of the cat litter pellets.

[0012] 2. This ring die pellet mill for cat litter production guides materials to fall accurately and centrally between two crushing rollers via symmetrically inclined guide plates. The interlocking crushing teeth on their surfaces efficiently shear and compress agglomerated raw materials, ensuring uniform particle size after crushing, laying the foundation for subsequent pelleting. The crushed material then falls onto the arc-shaped vibrating screen plate below. The excitation force generated by the vibrating motor causes the material to spread and jump fully on the screen surface, allowing fine particles to quickly pass through the filter holes while coarse particles are retained. This process greatly improves screening efficiency and accuracy. The entire process, from material guiding and crushing to vibrating screening, is tightly and smoothly integrated, not only optimizing material flow and increasing single-machine output, but also reducing reliance on manual labor through mechanization, enhancing the continuity and reliability of the production line. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial cross-sectional view of the structure of this utility model; Figure 3 This is a cross-sectional view of the structure of this utility model; Figure 4 This is a schematic diagram of the movable plate structure of this utility model; Figure 5 This is a schematic diagram of the cleaning brush and arc-shaped plate tube structure of this utility model; Figure 6 This utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle.

[0015] Explanation of reference numerals in the attached drawings: 1. Granulator body; 2. Feed hopper; 3. Discharge pipe; 4. Guide plate; 5. Rotating shaft; 51. Crushing roller; 6. Arc plate; 7. Filter hole; 8. Cleaning assembly; 9. Movable plate; 10. Cleaning brush; 11. T-shaped chute; 12. T-shaped slider; 13. Hydraulic cylinder; 21. Connecting plate; 22. Air jet assembly; 14. Arc plate tube; 15. Nozzle; 16. Air pump; 81. T-shaped rod; 82. Connecting spring; 61. Vibration motor. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] Please see Figures 1-6A ring die pellet mill for cat litter production includes a pellet mill body 1 and a feed hopper 2 fixedly installed on the pellet mill body 1. A discharge pipe 3 is fixedly connected to the right side of the pellet mill body 1. A crushing roller 51 is provided inside the feed hopper 2. Two guide plates 4 are fixedly installed obliquely and symmetrically on the inner wall of the feed hopper 2. The intersection of the two guide plates 4 forms a discharge channel. An arc-shaped plate 6 is provided on the outer side of the crushing roller 51. Several filter holes 7 are opened on the arc-shaped plate 6. A vibration motor 61 is provided on the outer side of the arc-shaped plate 6. A cleaning component for cleaning the outer surface of the arc-shaped plate 6 and an air jet component for auxiliary cleaning are also provided on the feed hopper 2. The cleaning assembly includes a movable plate 8 and a cleaning brush 9. The movable plate 8 is reciprocally movable on the outside of the arc plate 6 via a drive mechanism, and the cleaning brush 9 is fixedly installed on the side of the movable plate 8 near the arc plate 6. The airflow jet assembly includes an arc-shaped plate tube 14, nozzles 15, and an air pump 16. The arc-shaped plate tube 14 is fixedly connected to the outer wall of the movable plate 8 via a connecting plate 13. Several nozzles 15 facing the filter holes 7 are provided on it. The arc-shaped plate tube 14 is connected to the air pump 16 fixedly installed on the outer wall of one end of the arc-shaped plate tube 14 via a pipe.

[0018] In this embodiment, by setting up a cleaning component, the driving mechanism drives the movable plate 8 and the cleaning brush 9 to reciprocate along the outer surface of the arc plate 6, which can physically scrape off the material residue adhering to the filter holes 7, prevent the filter holes 7 from clogging, thereby ensuring the continuity and stability of material screening, while reducing equipment downtime caused by clogging and improving the overall working efficiency of the granulator; the reciprocating motion design of the cleaning brush 9 can also evenly distribute wear and extend the service life of the cleaning component; by setting up an air jet component, when the cleaning brush 9 cleans the filter holes, the high-pressure airflow generated by the air pump 16 is directionally sprayed into the filter hole area through the arc plate tube 14 and the nozzle 15, forming a pneumatic flushing effect, which not only helps to blow away the adhering fine powder material and enhance the cleaning effect, but also reduces the temperature around the filter holes 7 through airflow cooling, reducing the possibility of material adhering due to moisture and heat, thereby improving filtration efficiency and granulation quality; the synergistic effect of airflow and cleaning brush 9 realizes the combination of physical and pneumatic cleaning, which is suitable for working conditions of high humidity materials.

[0019] Reference Figure 1 and Figure 3 As shown, the crushing rollers 51 are a pair of rollers, and one end of the crushing rollers 51 is fixedly connected to a drive motor through a transmission shaft 5. The drive motor is fixedly installed on the outer wall of the feed hopper 2, and the two crushing rollers 51 are provided with intermeshing crushing teeth on their outer sides.

[0020] In this embodiment, a double-roll crushing roller 51 with intermeshing crushing teeth is used, which can efficiently shear and crush cat litter raw materials, ensuring uniform particle size and facilitating subsequent granulation. The intermeshing design can also prevent materials from getting stuck between the rollers, improve crushing efficiency, reduce energy consumption, adapt to various raw material characteristics, and enhance the versatility and reliability of the equipment.

[0021] Reference Figure 2 and Figure 3 As shown, the driving mechanism includes a hydraulic cylinder 12, which is fixedly installed on the outside of the feed hopper 2. The output end of the hydraulic cylinder 12 passes through the outer wall of the feed hopper 2 and is fixedly connected to the outer wall of the movable plate 8.

[0022] In this embodiment, the hydraulic cylinder 12 is used as the driving mechanism to provide stable and adjustable linear reciprocating motion, which drives the movable plate 8 and the cleaning brush 9 to move along the surface of the arc plate. The hydraulic drive has high load capacity and stability, which is suitable for the high-frequency cleaning needs of the pellet mill, ensuring the long-term stable operation of the cleaning components under harsh working conditions, while simplifying the maintenance process.

[0023] Reference Figure 6 As shown, several T-shaped rods 81 are fixedly connected to the side of the movable plate 8 facing the arc plate 6. Connecting springs 82 are fixedly connected to the T-shaped rods 81. One end of the connecting springs 82 is fixedly connected to the inner wall of the groove opened at the bottom of the cleaning brush 9.

[0024] In this embodiment, by setting a T-shaped rod 81 and a connecting spring 82, the cleaning brush 9 and the surface of the arc plate 6 are kept in elastic contact. This can adapt to the slight unevenness of the surface of the arc plate 6, ensure that the cleaning force is evenly distributed, avoid excessive wear in some areas or cleaning dead corners, and at the same time buffer the impact during the cleaning process, extend the service life of the cleaning brush 9 and the arc plate 6, and improve the durability and adaptability of the cleaning components.

[0025] Reference Figure 3 As shown, T-shaped sliders 11 are fixedly connected to the inner walls of both ends of the movable plate 8, and T-shaped grooves 10 are correspondingly provided on the outer wall of the arc plate 6 for the T-shaped sliders 11 to slide.

[0026] In this embodiment, the T-shaped slider 11 and the T-shaped groove 10 cooperate to provide precise linear guidance for the movement of the movable plate 8, preventing the movable plate 8 from shifting or vibrating during reciprocating motion, ensuring that the cleaning brush 9 always maintains the best contact position with the surface of the arc plate 6, improving the consistency and reliability of cleaning, while reducing energy loss due to friction and optimizing drive efficiency.

[0027] Reference Figure 2 and Figure 3As shown, the guide plates 4 are symmetrically inclined, and the feeding channel at their intersection is directly opposite the feeding area of ​​the crushing roller 51; the vibrating motor 61 is fixedly installed at the center of the outer side of the arc plate 6.

[0028] In this embodiment, the symmetrically inclined guide plate 4 concentrates the material flow to the feeding area of ​​the crushing roller 51, optimizes the material distribution, and improves the feeding uniformity and crushing efficiency. The vibration motor 61 generates periodic micro-vibrations, making it easier for the material on the arc plate 6 to pass through the filter hole 7, preventing the material from accumulating on the screen surface, improving the screening speed and granulation output, while reducing manual intervention and realizing automated operation.

[0029] During use, in the feeding and guiding stage: cat litter production raw materials (such as bentonite, tofu residue and other mixed materials) are put into the feeding hopper 2; the material first comes into contact with two symmetrically inclined guide plates 4. Under the guidance of the guide plates 4, the material flows to the discharge channel formed at their intersection and is thus accurately guided to the feeding area of ​​the crushing roller 51 below. This design ensures that materials enter the crushing station in a concentrated and uniform manner, laying the foundation for efficient crushing. The material enters between two crushing rollers 51, which are driven by a drive motor through a transmission shaft 5 and have interlocking crushing teeth on their surfaces. They rotate in opposite directions, generating a strong shearing and squeezing effect on the material, breaking any lumps or large particles into smaller particles. The crushed material falls onto the arc-shaped plate 6 below it. The vibration motor 61 installed on the outside of the arc-shaped plate 6 starts, generating high-frequency micro-vibration. This vibration is transmitted to the entire arc-shaped plate 6, causing the material on the plate to be shaken and flattened. Fine materials that meet the particle size requirements quickly pass through the filter holes 7 opened on the arc-shaped plate 6 under the action of gravity and vibration, and enter the next granulation stage. Larger particles that fail to pass through the filter holes 7 remain temporarily on the surface of the arc-shaped plate 6. Synchronous cleaning and anti-clogging stage (this stage is carried out simultaneously with crushing and screening, and is the key to ensuring the continuous and efficient operation of the equipment): The hydraulic cylinder 12 (drive mechanism) fixedly installed on the outside of the feed hopper 2 is started, pushing the movable plate 8 connected to its output end to reciprocate along the outer surface of the arc plate 6. The movable plate 8 achieves precise and stable linear movement by cooperating with the T-shaped sliding grooves 10 on the arc plate 6 through the T-shaped sliders 11 at both ends. The cleaning brush 9 fixed on the movable plate 8 then brushes the outer surface of the arc plate 6. The cleaning brush 9 is elastically connected to the movable plate 8 through the T-shaped rod 81 and the connecting spring 82, which allows the brush to always closely fit the curved surface of the arc plate 6, effectively scraping away the material that is blocked or adhered to the outside of the filter hole 7, ensuring that the filter hole 7 is unobstructed; Air-assisted cleaning: The movable plate 8 is fixed with the air-assisted cleaning plate 8 through the connecting plate 13. The arc-shaped plate tube 14, which is fixedly connected, moves synchronously. The air pump 16, which is fixedly installed at one end of the arc-shaped plate tube 14, works to deliver high-pressure airflow through the pipeline to the arc-shaped plate tube 14. Multiple nozzles 15 on it are sprayed onto the filter hole 7 area. This airflow can blow away the fine powder material loosened by the cleaning brush 9, enhancing the cleaning effect. On the other hand, the airflow can play a certain cooling role, reducing the phenomenon of material wet and hot adhesion caused by the heat generated during the granulation process. After being screened by the arc-shaped plate 6, the qualified material enters the ring die granulation area inside the granulator body 1. Under the strong extrusion of the ring die and the pressure roller, the material is forced through the die hole on the ring die to form particles with uniform diameter. Finally, the formed cat litter particles are discharged through the discharge pipe 3, which is fixedly connected to the right side of the granulator body 1.

[0030] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ring die pellet mill for cat litter production, comprising a pellet mill body (1) and a feed hopper (2) fixedly installed on the pellet mill body (1), wherein a discharge pipe (3) is fixedly connected to the right side of the pellet mill body (1), and a crushing roller (51) is provided inside the feed hopper (2), characterized in that: The inner wall of the feed hopper (2) is fixedly and symmetrically fitted with two guide plates (4), and the intersection of the two guide plates (4) forms a feeding channel; the outer side of the crushing roller (51) is provided with an arc plate (6), and the arc plate (6) is provided with a number of filter holes (7); a vibration motor (61) is provided on the outer side of the arc plate (6); the feed hopper (2) is also provided with a cleaning component for cleaning the outer surface of the arc plate (6) and an air jet component for auxiliary cleaning; The cleaning assembly includes a movable plate (8) and a cleaning brush (9). The movable plate (8) is reciprocally movable on the outside of the arc plate (6) by a drive mechanism, and the cleaning brush (9) is fixedly installed on the side of the movable plate (8) near the arc plate (6). The airflow jet assembly includes an arc-shaped plate tube (14), a nozzle (15), and an air pump (16). The arc-shaped plate tube (14) is fixedly connected to the outer wall of the movable plate (8) through a connecting plate (13), and has a plurality of nozzles (15) facing the filter holes (7). The arc-shaped plate tube (14) is connected to the air pump (16) fixedly installed on the outer wall of one end of the arc-shaped plate tube (14) through a pipe.

2. The ring die pellet mill for cat litter production according to claim 1, characterized in that: The crushing rollers (51) are a pair of rollers, and one end of the crushing rollers (51) is fixedly connected to a drive motor through a transmission shaft (5). The drive motor is fixedly installed on the outer wall of the feed hopper (2). The two crushing rollers (51) have intermeshing crushing teeth on their outer sides.

3. The ring die pellet mill for cat litter production according to claim 2, characterized in that: The driving mechanism includes a hydraulic cylinder (12), which is fixedly installed on the outside of the feed hopper (2). The output end of the hydraulic cylinder (12) passes through the outer wall of the feed hopper (2) and is fixedly connected to the outer wall of the movable plate (8).

4. The ring die pellet mill for cat litter production according to claim 1, characterized in that: The movable plate (8) is fixedly connected to a number of T-shaped rods (81) on the side facing the arc plate (6). A connecting spring (82) is fixedly connected to the number of T-shaped rods (81). One end of the connecting spring (82) is fixedly connected to the inner wall of the groove opened at the bottom of the cleaning brush (9).

5. A ring die pellet mill for cat litter production according to claim 1, characterized in that: T-shaped sliders (11) are fixedly connected to the inner walls of both ends of the movable plate (8), and T-shaped grooves (10) for sliding of the T-shaped sliders (11) are correspondingly opened on the outer wall of the arc plate (6).

6. A ring die pellet mill for cat litter production according to claim 5, characterized in that: The guide plates (4) are symmetrically inclined, and the feeding channel at their intersection is directly opposite the feeding area of ​​the crushing roller (51); the vibration motor (61) is fixedly installed at the center of the outer side of the arc plate (6).

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