A swing granulator with dustproof function

Abstract

A dust-proof gyratory pellet mill is designed to solve the problem of dust generation during the feeding and discharging processes of existing equipment. The gyratory pellet mill includes a shell with a feed inlet on the upper side and a discharge outlet on the lower side. Above the feed inlet is a dust-proof feeding unit comprising a horizontal cylindrical body connected to a hopper on the upper side and sealed to the feed inlet on the lower side. Inside the cylinder is a dial assembly consisting of a dial shaft and radial dials, dividing the cylinder into multiple fan-shaped chambers. Rotation of the dial allows for closed-loop, batch feeding of raw materials, preventing dust generation. Below the discharge outlet is a material hopper, sealed to the outlet. The hopper has an air inlet with an air regulating valve at the top and a vacuum discharge pipe at the bottom, achieving dust-free discharge through a negative pressure system. This invention effectively blocks dust generation during the operation of the gyratory pellet mill, maintaining a clean workshop environment and protecting the health of operators.

Description

Technical Field

[0001] This utility model relates to a gyratory pellet mill with dustproof function. Background Technology

[0002] A gyratory pellet mill is a specialized device that processes moist powder or dry lumps into the required granules. It mainly uses a rotating drum to force a mixture of moist powders through a screen to form granules.

[0003] The existing oscillating pellet mill structure includes: an oscillating pellet mill shell, a feed inlet on the upper side and a discharge outlet on the lower side of the shell, a screen at the discharge outlet, and oscillating rollers inside the shell. See Chinese Patent CN201610030047.1 for details.

[0004] The disadvantage of existing gyratory pellet mills is that, since the feed inlets of existing gyratory pellet mills are all open, dust is easily generated when feeding is carried out while the mill is operating. The discharge inlet generally uses a material bucket to receive the material and then conveys it to the next stage via an auger. The operation of the auger also generates a lot of dust. To avoid excessive dust, some companies use replaceable material bags instead of material buckets and augers. The material bags can cover the discharge outlet of the gyratory pellet mill to reduce dust, but dust cannot be completely avoided when changing the material bags. Dust not only pollutes the workshop environment but also harms the health of the operators. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a gyratory pellet mill with dust prevention function, which can effectively block the dust generated during the operation of the gyratory pellet mill, keep the workshop environment clean, and avoid the harm caused to operators by inhaling dust.

[0006] To solve the above technical problems, this utility model provides a gyratory pellet mill with dustproof function, including a gyratory pellet mill shell, a feed inlet on the upper side and a discharge outlet on the lower side of the gyratory pellet mill shell, a screen at the discharge outlet, gyratory rollers inside the gyratory pellet mill shell, a feed dustproof unit above the feed inlet, the feed dustproof unit including a horizontally arranged cylindrical body, a feed trough on the upper side of the cylindrical body, a discharge trough on the lower side of the cylindrical body, a hopper with a large upper opening and a small lower opening connected to the feed trough, the discharge trough sealingly connected to the discharge outlet on the lower side of the gyratory pellet mill shell, and a dial wheel assembly inside the cylindrical body. The assembly includes a dial shaft arranged coaxially with the cylindrical body. Several paddles are provided on the outer circumference of the dial shaft, extending radially outward to the arc-shaped inner wall of the cylindrical body. The paddles extend to the inner walls of both ends of the cylindrical body along the axial direction of the dial shaft. One end of the impeller shaft extends beyond the cylindrical body and is coaxially connected to a geared motor. A vertically arranged material barrel is provided below the discharge port of the oscillating pellet mill housing. A material receiving port is opened on the upper side of the material barrel, which is sealed and connected to the discharge port of the oscillating pellet mill housing. An air inlet is provided on the upper circumferential side wall of the material barrel, connecting the inside and outside of the material barrel. An air regulating valve is provided at the air inlet. A vacuum discharge pipe for connecting to the negative pressure end is provided on the circumferential side wall of the material barrel near the bottom.

[0007] For the sake of simplicity, the oscillating pellet mill with dustproof function described in this utility model will be referred to as this oscillating pellet mill.

[0008] The operation and advantages of this gyratory pellet mill: The rotary wheel assembly divides the cylindrical body into several sector-shaped chambers. Raw materials are added from the hopper and then enter the corresponding sector-shaped chamber inside the cylinder through the feed chute. As the rotary wheel assembly rotates, the sector-shaped chamber filled with raw materials leaves the feed chute, forming a fully enclosed state. When it rotates to the discharge chute, the raw materials fall into the gyratory pellet mill casing under gravity. Since the feed inlet of the gyratory pellet mill corresponds to the only outlet of the sector-shaped chamber at this time, a closed feeding environment is formed, preventing dust generation. After the raw materials in the sector-shaped chambers have completely fallen, they are further dispersed by the rotary wheel assembly. The rotation of the parts continues to cycle to the next cycle. In actual use, the dial assembly maintains a certain speed and rotates continuously, thus enabling continuous feeding. The material inlet of the hopper is sealed and connected to the discharge outlet of the oscillating pellet mill housing. During discharge, the material directly enters the hopper without any dust flying out. The vacuum discharge pipe of the hopper is connected to the negative pressure system. The air regulating valve adjusts the appropriate air intake according to the current negative pressure. This allows the material in the hopper to be carried away by the negative pressure and enter the next stage. Due to the use of negative pressure discharge, dust discharge can be completely blocked, keeping the workshop environment clean and preventing operators from being harmed by inhaling dust. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this oscillating pellet mill. Detailed Implementation

[0010] See Figure 1 A gyratory pellet mill with dustproof function includes a gyratory pellet mill housing 1. The housing 1 has an inlet 11 on its upper side and an outlet 12 on its lower side. A screen 13 is provided at the outlet 12. Gyratory rollers 14 are provided inside the housing 1. A dustproof feeding unit is provided above the inlet 11. The dustproof feeding unit includes a horizontally arranged cylindrical body 2. An inlet trough 21 is provided on the upper side of the cylindrical body 2, and a discharge trough 22 is provided on the lower side. A hopper 3 with a large upper opening and a small lower opening is connected to the inlet trough 21. The discharge trough 22 is sealed to the outlet 12 on the lower side of the gyratory pellet mill housing. A dial wheel assembly 4 is provided inside the cylindrical body 2. The dial wheel assembly 4 includes a dial wheel shaft 41 arranged coaxially with the cylindrical body 2. Several dial wheel shafts are arranged circumferentially outward from the dial wheel shaft 41. A lever 42 extends radially outward along the lever shaft 41 to the arc-shaped inner wall of the cylindrical body 2. The lever 42 extends axially to both ends of the inner wall of the cylindrical body 2. One end of the impeller shaft extends beyond the cylindrical body 2 and is coaxially connected to a geared motor (the geared motor is located on the rear side of the cylindrical body in the attached figure, and the geared motor is a conventional component, so it is not shown in the attached figure for the sake of simplicity). A vertically arranged material barrel 5 is provided below the discharge port 12 of the oscillating pellet mill housing 1. A material receiving port 51 is opened on the upper side of the material barrel 5. The material receiving port 51 is sealed and connected to the discharge port 12 of the oscillating pellet mill housing 1. An air inlet 52 connecting the inside and outside of the material barrel is provided on the upper circumferential side wall of the material barrel 5. An air regulating valve 53 is provided at the air inlet 52. A vacuum discharge pipe 54 for connecting the negative pressure end is provided on the circumferential side wall of the material barrel 5 near the bottom.

[0011] The operation and advantages of this gyratory pellet mill: The rotary wheel assembly 4 divides the cylindrical body 2 into several sector-shaped chambers. Raw materials are added from the hopper 3 and then enter the corresponding sector-shaped chamber inside the cylindrical body 2 through the feed inlet 21. As the rotary wheel assembly 4 rotates, the sector-shaped chamber filled with raw materials leaves the feed inlet 21, forming a fully enclosed state. When it rotates to the discharge inlet 22, the raw materials fall into the gyratory pellet mill housing 1 under the action of gravity. Since the feed inlet 11 of the gyratory pellet mill corresponds to the only outlet of the sector-shaped chamber at this time, a closed feeding environment is formed, and no dust is generated. After the raw materials in the sector-shaped chambers have completely fallen, they are discharged with the rotary wheel assembly... 4. The rotation continues to cycle to the next cycle. In actual use, the dial assembly 4 maintains a certain speed and rotates continuously, so that the material can be fed continuously. The material inlet 51 of the material bucket 5 is sealed and connected to the outlet 12 of the swing pellet mill housing 1. When discharging, the material directly enters the material bucket 5 and there will be no dust flying out. The vacuum discharge pipe 54 of the material bucket 5 is connected to the negative pressure system. The air regulating valve 53 adjusts the appropriate air intake according to the current negative pressure. This allows the material in the material bucket 5 to be carried away by the negative pressure and enter the next stage. Because negative pressure is used for discharge, the discharge dust can be completely blocked, the workshop environment is kept clean, and the operators are prevented from being harmed by inhaling dust.

Claims

1. A gyratory pellet mill with dustproof function, comprising a gyratory pellet mill housing, a feed inlet on the upper side and a discharge outlet on the lower side of the gyratory pellet mill housing, a screen being provided at the discharge outlet, and gyratory rollers being provided inside the gyratory pellet mill housing, characterized in that: A dustproof feeding unit is provided above the feed inlet. This dustproof feeding unit includes a horizontally arranged cylindrical body. A feed trough is located on the upper side of the cylindrical body, and a discharge trough is located on the lower side. A hopper with a larger upper opening and a smaller lower opening is connected to the feed trough. The discharge trough is sealed to the discharge port on the lower side of the oscillating pellet mill casing. A dial wheel assembly is provided inside the cylindrical body. The dial wheel assembly includes a dial wheel shaft arranged coaxially with the cylindrical body. Several radially extending outwards from the dial wheel shaft extend to the arc-shaped inner wall of the cylindrical body. The paddle extends along the axial direction of the paddle wheel shaft to the inner walls of both ends of the cylindrical body. One end of the paddle wheel shaft extends beyond the cylindrical body and is coaxially connected to a geared motor. A vertically arranged material barrel is provided below the discharge port of the oscillating pellet mill housing. A material receiving port is opened on the upper side of the material barrel and is sealed to the discharge port of the oscillating pellet mill housing. An air inlet is provided on the upper circumferential side wall of the material barrel, which connects the inside and outside of the material barrel. An air regulating valve is provided at the air inlet. A vacuum discharge pipe for connecting to the negative pressure end is provided on the circumferential side wall of the material barrel near the bottom.

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