CN212215426U - A functional ceramic powder granulator - Google Patents

Abstract

The utility model discloses a functional ceramic powder granulator, which comprises a material injection part and a molding part, wherein the material injection part comprises a feeding hopper and an extrusion cylinder which are communicated with each other. The circumferential surface of the main shaft is provided with continuous helical blades, and the maximum turning radius of the helical blades is the same as the inner diameter of the extrusion cylinder. The large-diameter end of the reducing cylinder communicates with the outlet end of the extrusion cylinder, the small-diameter end of the reducing cylinder is closed, and the inside of the closed part is arranged in an annular array to communicate with the extrusion channels on both sides, and the axis of the extrusion channel is connected to the extrusion channel. The axis of the variable diameter cylinder is parallel. This functional ceramic powder granulator ensures the stability of the temperature of the forming part by setting the water circulation inside the forming part and passing the medium of different temperature, thereby ensuring the consistent gloss of the product surface.

Description

A functional ceramic powder granulator

technical field

The utility model relates to the technical field of ceramic powder granulation equipment, in particular to a functional ceramic powder granulator.

Background technique

In the production process of functional ceramics, from the perspective of facilitating sintering and solid-phase reaction, it is desirable to obtain ultra-fine raw material particles, but the finer the powder, the larger the specific surface area and the poorer the fluidity, and it is not easy to dry press molding Evenly filling the mold, there are often problems such as voids, non-dense corners, spalling, and elastic failure of the molded parts. The granulation process is often used to solve this problem.

The quality of ceramic granulation includes two aspects, namely gloss and compactness. The gloss of the granulation surface is mainly affected by the temperature of the extrusion die, but during the extrusion process, the initial die temperature is lower, while the later die temperature Higher, it is easy to cause inconsistent surface gloss of the product.

Utility model content

The technical problem to be solved by the utility model is to overcome the existing defects and provide a functional ceramic powder granulator. By setting a water circulation inside the forming part, and by introducing media with different temperatures, the temperature of the forming part is guaranteed to be stable, so as to ensure the stability of the temperature of the forming part. The gloss of the product surface is consistent, which can effectively solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a functional ceramic powder granulator, comprising a material injection part and a molding part, the material injection part includes a feeding hopper and an extrusion cylinder that are communicated with each other, and the extrusion The main shaft is rotated and installed inside the pressing cylinder, the circumferential surface of the main shaft is provided with continuous helical blades, the maximum turning radius of the helical blades is the same as the inner diameter of the extrusion cylinder, and the outlet end of the extrusion cylinder is connected with a forming part, the The forming part includes a reducing cylinder, the large diameter end of the reducing cylinder is communicated with the outlet end of the extrusion cylinder, the small diameter end of the reducing cylinder is closed, and the inside of the closed part is arranged in an annular array to communicate with the extrusion channels on both sides, The axis of the extrusion channel is parallel to the axis of the reducing cylinder, and a rotating knife is set outside the small diameter end of the reducing cylinder. When the rotating knife rotates, the blade inside the rotating knife passes through the opening of the extrusion channel, closing the part. Both ends of the interior are respectively provided with independent water storage cavities, the closed part is provided with multiple groups of water passages communicating with the water storage cavities at both ends, and the two water storage cavities are respectively provided with water passages communicating with the outside.

As a preferred technical solution of the present invention, an outer ring gear is arranged on the circumferential surface of the rotary knife, a second motor is fixed outside the reducing cylinder, and the end of the axis of the second motor is arranged to engage with the outer ring gear the gear;

The rotary knife is driven to rotate by the second motor, so that the blade inside the rotary knife passes through the outlet end of the extrusion channel, and the raw material extruded from the extrusion channel is cut off. Ceramic grains.

As a preferred technical solution of the present utility model, the axes of the feed hopper and the extrusion cylinder are vertical, a screw is coaxially rotated inside the feed hopper, and the end of the screw is provided with a first motor;

The screw is driven by the first motor to rotate, and the raw materials in the feed hopper are quickly injected into the extrusion barrel through the action of the screw, so as to ensure the continuity of the extrusion barrel feeding.

As a preferred technical solution of the present invention, the water passage is a capillary tube arranged inside the closed portion of the reducing cylinder, and the water passage and the extrusion passage are not connected to each other;

The reducing cylinder is made of cast iron, which has good thermal conductivity. The liquid medium flows through the capillary tube to control the temperature of the inner wall of the extrusion channel, so as to ensure that the temperature of the internal extrusion material is stable, thereby ensuring that the gloss of the product is consistent.

Compared with the prior art, the beneficial effect of the present utility model is: the functional ceramic powder granulator adopts the method of reducing the diameter of the cylinder, so that the raw material can have a certain degree of compactness during extrusion, thereby avoiding the problem of insufficient compactness of the finished product. At the same time, by setting the water passage in parallel inside the extrusion channel, the liquid medium of different temperature is passed into the water passage, and the heat conduction of the variable diameter cylinder ensures the temperature stability of the extrusion channel, thereby ensuring the consistent gloss of the product; at the same time molding The part and the injection part adopt a separate design, which is convenient for the replacement of the forming part according to the requirements of different products.

Description of drawings

Fig. 1 is the structural representation of the utility model;

2 is a sectional view of the utility model;

Fig. 3 is the enlarged view of the utility model A;

Fig. 4 is the schematic diagram of the molding part of the present invention;

FIG. 5 is a schematic diagram of the rotary knife of the present invention.

In the picture: 1 injection part, 101 feed hopper, 102 extrusion cylinder, 103 screw, 104 main shaft, 105 first motor, 2 forming part, 201 diameter reducing cylinder, 202 rotary knife, 203 second motor, 204 water storage Cavity, 205 water passage, 206 extrusion passage.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-5, the present utility model provides a technical solution: a functional ceramic powder granulator, comprising a material injection part 1 and a molding part 2, and the material injection part 1 includes a feeding hopper 101 that communicates with each other and an extrusion part 2. Cylinder 102, the main shaft 104 is rotatably installed inside the extrusion cylinder 102, the circumferential surface of the main shaft 104 is provided with continuous helical blades, the maximum turning radius of the helical blades is the same as the inner diameter of the extrusion cylinder 102, and the outlet end of the extrusion cylinder 102 is connected with a forming part 2. The molding part 2 includes a reducing cylinder 201, the large diameter end of the reducing cylinder 201 is communicated with the outlet end of the extrusion cylinder 102, the small diameter end of the reducing cylinder 201 is closed, and the inside of the closed part is arranged in an annular array to communicate with the extrusion cylinders on both sides. Press the channel 206, the axis of the extrusion channel 206 is parallel to the axis of the reducing cylinder 201, and the small diameter end of the reducing cylinder 201 is rotated to set the rotary knife 202. The two ends of the closed part are respectively provided with independent water storage cavities 204, and the closed part is provided with multiple groups of water passages 205 that communicate with the two ends of the water storage cavities 204, and the two water storage cavities 204 are respectively set to communicate with the outside. the water outlet.

An outer ring gear is arranged on the circumferential surface of the rotary knife 202, a second motor 203 is fixedly arranged on the outside of the reducing cylinder 201, and a gear meshing with the outer ring gear is arranged at the end of the axis of the second motor 203;

The rotary knife 202 is driven to rotate by the second motor 203, so that the blade inside the rotary knife 202 passes through the outlet end of the extrusion channel 206, and the raw material extruded from the extrusion channel 206 is cut off. By controlling the rotation speed of the rotary knife 202, Thereby producing different specifications of ceramic particles.

The axes of the feeding hopper 101 and the extrusion cylinder 102 are vertical, and a screw 103 is arranged coaxially inside the feeding hopper 101, and the end of the screw 103 is provided with a first motor 105;

The screw 103 is driven to rotate by the first motor 105 , and the raw material inside the feeding hopper 101 is quickly injected into the extrusion barrel 102 by the action of the screw 103 , so as to ensure the continuity of the feeding of the extrusion barrel 102 .

The water passage 205 is a capillary tube arranged inside the closed portion of the reducing cylinder 201, and the water passage 205 and the extrusion passage 206 are not communicated with each other;

The reducing cylinder 201 is made of cast iron, which has good thermal conductivity. The liquid medium flows through the capillary tube to control the temperature of the inner wall of the extrusion channel 206, so as to ensure the temperature of the internal extrusion material is stable, thereby ensuring the gloss of the product. Consistent.

In use: connect the water passage of the water storage cavity 204 in series with the external circulating water circuit, so that the external circulating water flows from the water storage cavity 204 on one side to the water storage cavity 204 on the other end through the water channel 205, When the water channel 205 is installed, the temperature of the reducing cylinder 201 where the extrusion channel 206 is located is controlled, and the temperature inside the extrusion channel 206 is guaranteed to be stable by controlling the temperature of the incoming circulating water;

During operation, the ceramic powder mixed with the adhesive is filled into the feeding hopper 101, the first motor 105 drives the screw 103 to rotate, pushes the powder into the extrusion cylinder 102, and connects the main shaft 104 with the external power The device is connected to drive the main shaft 104 to rotate, and under the rotation of the spiral blade, the powder is continuously fed to the side of the discharge port. The powder is extruded inside the extruding cylinder 102, and is formed when passing through the extruding channel 206, and is cut into ceramic particles with uniform specifications by the rotating rotary knife 202.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. A functional ceramic powder granulator comprises an injection part (1) and a forming part (2), and is characterized in that: the material injection part (1) comprises a feed hopper (101) and an extrusion cylinder (102) which are communicated with each other, a main shaft (104) is rotatably arranged in the extrusion cylinder (102), continuous spiral blades are arranged on the circumferential surface of the main shaft (104), the maximum radius of gyration of the spiral blades is the same as the inner diameter of the extrusion cylinder (102), the outlet end of the extrusion cylinder (102) is communicated with a forming part (2), the forming part (2) comprises a reducer cylinder (201), the large-diameter end of the reducer cylinder (201) is communicated with the outlet end of the extrusion cylinder (102), the small-diameter end of the reducer cylinder (201) is closed, extrusion channels (206) which are communicated with two sides are arranged in an annular array mode inside the closed part, the axis of each extrusion channel (206) is parallel to the axis of the reducer cylinder (201), a rotary cutter (202) is rotatably arranged outside the small-diameter end of the reducer cylinder (201), and when the rotary cutter (202) rotates, the blade inside the rotary knife (202) passes through the opening of the extrusion channel (206), two ends inside the closed part are respectively provided with an independent water storage cavity (204), a plurality of groups of water passing channels (205) communicated with the water storage cavities (204) at the two ends are arranged inside the closed part, and the two water storage cavities (204) are respectively provided with a water passing opening communicated with the outside.

2. The functional ceramic powder pelletizer as set forth in claim 1, wherein: an outer gear ring is arranged on the circumferential surface of the rotary knife (202), a second motor (203) is fixedly arranged outside the reducer cylinder (201), and a gear meshed with the outer gear ring is arranged at the end part of the axis of the second motor (203).

3. The functional ceramic powder pelletizer as set forth in claim 1, wherein: the axis of feeder hopper (101) and recipient (102) is perpendicular, the inside coaxial rotation of feeder hopper (101) sets up screw rod (103), the tip of screw rod (103) is provided with first motor (105).

4. The functional ceramic powder pelletizer as set forth in claim 1, wherein: the water passage (205) is a capillary tube arranged inside the closed part of the reducer cylinder (201), and the water passage (205) and the extrusion passage (206) are not communicated with each other.

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