One-way extrusion type ceramic granulator

Abstract

The utility model belongs to the technical field of ceramic powder equipment manufacturing, and particularly relates to a one-way extrusion type ceramic granulator, which comprises an extrusion roller and a friction plate, the extrusion roller and the friction plate are arranged side by side, so that a roller gap is formed between the extrusion roller and the friction plate, the friction plate consists of a friction plate body, a buffer layer and a friction layer, the buffer layer is fixedly connected with the friction plate body, the friction layer is fixedly connected with the buffer layer, and the surface of the friction layer forms the matched surface of the friction plate and the extrusion roller. The basic technical principle of the utility model is as follows: the extrusion roller and the friction plate are matched with each other, and the extrusion roller rotates in one direction to extrude and crush ceramic raw materials. Compared with the extrusion and crushing effects generated by opposite rotation of two parallel extrusion rollers adopted by the conventional double-roller granulator, the extrusion and crushing mode of unidirectional rotation of the extrusion rollers adopted by the double-roller granulator disclosed by the utility model cannot press ceramic particles formed in the granulation process too compactly, so that the quality of ceramic powder is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ceramic powder equipment manufacturing, and particularly relates to a unidirectional extrusion type ceramic granulator. Background Art

[0002] At present, the ceramic powder used by ceramic enterprises for producing ceramic tiles is generally divided into the following two categories:

[0003] One category is hollow ceramic powder particles, which are produced by a wet powder making process, and the wet powder making process is also called spray drying powder making in the industry.

[0004] The other category is solid ceramic powder, which is obtained by a dry powder making process.

[0005] For dry powder making, most ceramic enterprises currently use a pair-roll press for ceramic granulation. When the pair-roll press works, the two extrusion rolls in the machine case rotate towards each other to extrude and crush ceramic raw materials, so as to prepare ceramic powder with a corresponding particle size. Compared with a spray granulation device and its corresponding granulation method (spray granulation method), the pair-roll press and its corresponding granulation method (roll pressing granulation method) have the advantages of low energy consumption and high efficiency.

[0006] However, the existing roll pressing granulation method also has obvious technical defects: mainly, the two extrusion rolls rotate towards each other during the granulation process, resulting in the ceramic particles prepared by it being pressed too densely, and the overly dense ceramic particles will reduce the quality of subsequent products (such as ceramic tiles).

[0007] Therefore, improving the existing dry powder making process to obtain fluffy ceramic powder particles plays an important role in obtaining high-quality ceramic tiles subsequently. Summary of the Invention

[0008] The purpose of the utility model is to solve the problem that the ceramic particles prepared by the roll pressing granulation method are too dense by improving the structure of the ceramic granulator, so as to overcome the above-mentioned defects of the existing technology.

[0009] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0010] A unidirectional extrusion type ceramic granulator includes an extrusion roll and a friction plate. The extrusion roll and the friction plate are arranged side by side, so as to form a roll gap between the extrusion roll and the friction plate. The friction plate is composed of a friction plate body, a buffer layer and a friction layer. The buffer layer is fixedly connected with the friction plate body, the friction layer is fixedly connected with the buffer layer, and the surface of the friction layer constitutes the surface of the friction plate that cooperates with the extrusion roll.

[0011] The above technical solution embodies the basic technical principle of the present utility model: through the mutual cooperation of the extrusion roller and the friction plate, and by the one-way rotation of the extrusion roller, the extrusion and crushing of ceramic raw materials are realized. Compared with the extrusion and crushing effect generated by the opposite rotation of two parallel extrusion rollers adopted by the existing double-roll roller press, the extrusion and crushing method of the one-way rotation of the extrusion roller adopted by the present utility model will not press the ceramic particles formed during the granulation process too densely.

[0012] Based on the above technical solution, the present utility model can adopt the following additional technical means to better or more pertinently solve the technical problems to be solved by the present utility model:

[0013] The weight ratio of the friction plate to the extrusion roller is between 0.36 and 0.39, that is, 0.39 ≥ the weight ratio of the friction plate to the extrusion roller ≥ 0.36.

[0014] Further, the surface of the friction plate that cooperates with the extrusion roller is an arc surface or an inclined surface.

[0015] Further, the friction plate body is made of cast iron, the buffer layer is made of polyurethane elastic material, and the friction layer is made of cemented carbide.

[0016] Further, the thicknesses of both the buffer layer and the friction layer are 3 - 5 mm. It should be further noted that in the case where the buffer layer is divided into a front buffer layer and a rear buffer layer, and the friction layer is divided into a front friction layer and a rear friction layer, the so-called thicknesses of both the buffer layer and the friction layer being 3 - 5 mm means that the thicknesses of the front buffer layer, the rear buffer layer, the front friction layer, and the rear friction layer are each 3 - 5 mm.

[0017] Further, on the surface of the friction layer, there are multiple rows and columns of conical protrusions integrally formed with the friction layer. The cone height of the conical protrusions is 1 - 1.5 mm, the radius of the bottom thereof is 1 - 1.5 mm, and the distance between adjacent two conical protrusions in the same row or the same column is 1 - 1.5 mm.

[0018] Further, it further includes a chassis. The extrusion roller and the friction plate are arranged inside the chassis. There is a feed inlet on the top plate of the chassis, and a discharge outlet on the bottom plate of the chassis. Both ends of the friction plate are fixedly connected to the left side plate and the right side plate of the chassis respectively. The feed inlet is arranged above the roll gap, and the discharge outlet is arranged below the roll gap. There is also a hot gas inlet on the chassis, and the hot gas inlet is communicated with a hot gas source outside the system through a heating pipeline;

[0019] Both ends of the roller shaft of the extrusion roller are respectively connected to a left bearing assembly and a right bearing assembly symmetrically arranged on the left side plate and the right side plate of the chassis. One end of the roller shaft of the extrusion roller extends outside the left side plate of the chassis and is connected to a driving motor. The left bearing assembly and the right bearing assembly are both installed on the left side plate and the right side plate of the chassis in a manner that can move back and forth. By moving the two sets of bearing assemblies back and forth, the distance between the extrusion roller and the friction plate can be adjusted.

[0020] Furthermore, left mounting grooves and right mounting grooves are symmetrically provided on the left side plate and the right side plate of the chassis. Left moving mounting blocks and right moving mounting blocks that can move back and forth relative to the left side plate and the right side plate are respectively provided in the left mounting grooves and the right mounting grooves. The left bearing assembly and the right bearing assembly are respectively installed on the left moving mounting block and the right moving mounting block.

[0021] Furthermore, there are two extrusion rollers, that is, the extrusion rollers are divided into a first extrusion roller and a second extrusion roller. The first extrusion roller and the second extrusion roller are arranged in parallel. The friction plate is arranged between the first extrusion roller and the second extrusion roller. Correspondingly, the left mounting groove is divided into a left first mounting groove and a left second mounting groove, and the right mounting groove is divided into a right first mounting groove and a right second mounting groove; the left moving mounting block is divided into a left first moving mounting block and a left second moving mounting block, and the right moving mounting block is divided into a right first moving mounting block and a right second moving mounting block; the left bearing assembly is divided into a left first bearing assembly and a left second bearing assembly, and the right bearing assembly is divided into a right first bearing assembly and a right second bearing assembly; the left first bearing assembly and the right first bearing assembly are respectively installed on the left first moving mounting block and the right first moving mounting block, and the left second bearing assembly and the right second bearing assembly are respectively installed on the left second moving mounting block and the right second moving mounting block; the left first moving mounting block and the right first moving mounting block are respectively arranged in the left first mounting groove and the right first mounting groove, and the left second moving mounting block and the right second moving mounting block are respectively arranged in the left second mounting groove and the right second mounting groove; both ends of the roller shaft of the first extrusion roller are respectively connected to the left first bearing assembly and the right first bearing assembly, and both ends of the roller shaft of the second extrusion roller are respectively connected to the left second bearing assembly and the right second bearing assembly.

[0022] Compared with the existing double-roller granulation machine specifically used for ceramic granulation, the main beneficial effects of the present utility model are as follows:

[0023] First, since a friction plate is provided inside the ceramic granulator and extrusion granulation is carried out through the cooperation of the extrusion roller and the friction plate, whether the present utility model adopts a single-roller structure or a double-roller structure, in essence, granulation is carried out by the one-way rotation of the extrusion roller. This makes the extrusion force received by the ceramic raw material during the extrusion granulation process relatively light, thus avoiding the ceramic particles from being pressed too densely. In particular, when a buffer layer and a friction layer are provided on the side of the friction plate facing the extrusion roller (or on both sides of the friction plate when adopting a double-roller structure), due to the certain buffering effect of the buffer layer, it can more effectively avoid the ceramic particles from being pressed too densely.

[0024] Second, due to the technical means of installing the bearing assembly corresponding to the extrusion roller on the movable mounting block, the present utility model can conveniently adjust the distance between the extrusion roller and the friction plate, enabling ceramic enterprises to use the same equipment to produce ceramic powders with different particle sizes, thus greatly saving the production cost of ceramic enterprises. In particular, when ceramic raw materials get stuck between the extrusion roller and the friction plate and cannot fall normally, by adjusting the distance between the extrusion roller and the friction plate, it is possible to conveniently clean the ceramic raw materials that cannot fall.

[0025] Third, by providing multiple rows and columns of conical protrusions on the surface of the friction layer, it can effectively prevent the ceramic raw materials from being extruded into strips or sheets during the granulation process.

[0026] Fourth, by providing a hot air inlet on the machine case, the present utility model can introduce external dry hot air into the machine case during the ceramic granulation process, thereby adjusting the dry humidity of the ceramic raw material particles and improving the granulation efficiency. Description of the Drawings

[0027] Figure 1 is a three-dimensional structural schematic diagram of Embodiment 1 of the present utility model;

[0028] Figure 2 is a top-view structural schematic diagram of Embodiment 1 of the present utility model;

[0029] Figure 3 is a longitudinal-sectional structural schematic diagram of Embodiment 1 of the present utility model;

[0030] Figure 4 is a three-dimensional structural schematic diagram of the first extrusion roller and the left first hydraulic cylinder in Embodiment 1 of the present utility model;

[0031] Figure 5 is an installation structural schematic diagram of the left first movable mounting block in Embodiment 1 of the present utility model;

[0032] Figure 6 is a longitudinal-sectional structural schematic diagram of the left side plate of the machine case and related structures in Embodiment 1 of the present utility model;

[0033] Figure 7 The structural schematic diagram when the surface of the friction plate in Embodiment 1 of the present utility model that cooperates with two extrusion rollers is an arc surface;

[0034] Figure 8 It is the longitudinal sectional structural schematic diagram of the friction plate in Embodiment 1 of the present utility model;

[0035] Figure 9 It is the longitudinal sectional structural schematic diagram of the friction plate and the extrusion roller in Embodiment 2 of the present utility model;

[0036] Figure 10 It is the longitudinal sectional structural schematic diagram of the friction plate in Embodiment 2 of the present utility model.

[0037] In the figure:

[0038] 1 - Chassis; 101 - Left side plate;

[0039] 101a - First left installation groove; 102 - Right side plate;

[0040] 103 - Feed inlet; 104 - Discharge outlet;

[0041] 2 - First extrusion roller; 2a - First driving motor;

[0042] 2b - First group of bearing assemblies; 3 - Second extrusion roller;

[0043] 3a - Second driving motor; 3b - Second group of bearing assemblies;

[0044] 4 - Friction plate; 401 - Friction plate body;

[0045] 402 - Front buffer layer; 403 - Rear buffer layer;

[0046] 404 - Front friction layer; 405 - Rear friction layer;

[0047] 5 - First left moving installation block; 6 - Second left moving installation block;

[0048] 7 - First right moving installation block; 8 - First left hydraulic cylinder;

[0049] 9 - First right hydraulic cylinder; 10 - Second left hydraulic cylinder;

[0050] 11 - Ball head joint; 12 - Ball head seat. Specific embodiments

[0051] In order to facilitate those skilled in the art to better understand the technical solution of the present utility model, the following introduces two embodiments of the present utility model in conjunction with the accompanying drawings.

[0052] Example 1

[0053] Figure 1 is a schematic three-dimensional structure diagram of Example 1, Figure 2 is a schematic top-view structure diagram of Example 1, Figure 1 and Figure 2 both omit the top plate of the chassis 1 and structural components such as the left second hydraulic cylinder and the right second hydraulic cylinder. Figure 3 is a schematic longitudinal section structure diagram of Example 1 (a schematic vertical section structure diagram from front to back, with the right side in the figure representing the front). Figure 4 is a schematic three-dimensional structure diagram of supporting components such as the first extrusion roller 2 and the left first hydraulic cylinder 8 in Example 1. Figure 5 is a schematic installation structure diagram of the transverse vertical section of the left first moving mounting block 5 in Example 1 (the installation structures of other moving mounting blocks in this embodiment are the same as that of the left first moving mounting block 5, with only differences in positions). Figure 6 is a schematic longitudinal section structure diagram of the left side plate 101 of the chassis 1 and related structures in Example 1.

[0054] As Figures 1 to 6 shown, a unidirectional extrusion type ceramic granulator includes a chassis 1 and two extrusion rollers arranged in the chassis 1, namely the first extrusion roller 2 and the second extrusion roller 3. An inlet 103 is provided on the top plate of the chassis 1, and an outlet 104 is provided on the bottom plate of the chassis 1. A friction plate 4 parallel to the first extrusion roller 2 and the second extrusion roller 3 is provided between the first extrusion roller 2 and the second extrusion roller 3. Corresponding roll gaps are respectively formed between the two side surfaces of the friction plate 4 and the roll surfaces of the first extrusion roller 2 and the second extrusion roller 3. Both ends of the friction plate 4 are fixedly connected to the left side plate 101 and the right side plate 102 of the chassis respectively. The inlet 103 is provided above the vicinity of the first extrusion roller 2, the second extrusion roller 3 and the friction plate 4 (above the two roll gaps), and the outlet 104 is provided below the vicinity of the first extrusion roller 2, the second extrusion roller 3 and the friction plate 4 (above the two roll gaps).

[0055] The two ends of the roller shafts of the first squeezing roller 2 and the second squeezing roller 3 are respectively connected to two sets of bearing assemblies (the first set of bearing assemblies 2b and the second set of bearing assemblies 3b) symmetrically arranged on the left side plate 101 and the right side plate 102 of the machine case 1. One end of the roller shaft of each of the first squeezing roller 2 and the second squeezing roller 3 extends outside the left side plate 101 of the machine case and is connected to its respective driving motor (the first driving motor 2a and the second driving motor 3a). The first set of bearing assemblies 2b and the second set of bearing assemblies 3b are both installed on the left side plate 101 and the right side plate 102 of the machine case 1 in a manner that allows for forward and backward movement. By moving the first set of bearing assemblies 2b and the second set of bearing assemblies 3b forward and backward, the distance between the first squeezing roller 2, the second squeezing roller 3 and the friction plate 4 can be adjusted. Specifically, on the left side plate 101 and the right side plate 102 of the machine case 1, there are symmetrically arranged a left first installation groove, a right first installation groove, a left second installation groove and a right second installation groove (the left first installation groove is labeled as 101a in Figure 5 The other installation grooves have the same shape and structure as the left first installation groove 101a, and the only difference lies in their positions, so they are not shown in the figure). In the left first installation groove and the right first installation groove, there are respectively arranged a left first moving installation block 5 and a right first moving installation block 7 that can move forward and backward relative to the left side plate and the right side plate. Correspondingly, in the left second installation groove and the right second installation groove, there are also respectively arranged a left second moving installation block 6 and a right second moving installation block (not shown in the figure) that can move forward and backward relative to the left side plate 101 and the right side plate 102. The first set of bearing assemblies 2b and the second set of bearing assemblies 3b are respectively installed on the left first moving installation block, the right first moving installation block, the left second moving installation block and the right second moving installation block.

[0056] As Figure 6 and in combination with Figure 4 shown in the figure, in order to stably and reliably adjust the distance between the first squeezing roller 2, the second squeezing roller 3 and the friction plate 4, in this embodiment, a left first hydraulic cylinder 8 and a right first hydraulic cylinder 9 are respectively arranged at the front ends of the left first moving installation block and the right first moving installation block. The left first hydraulic cylinder and the right first hydraulic cylinder are respectively connected to the left first moving installation block and the right first moving installation block through corresponding ball joints and ball seats (in the figure, the ball joint 11 and the ball seat 12 directly correspond to the left first hydraulic cylinder 8); correspondingly, a left second hydraulic cylinder 10 and a right second hydraulic cylinder (not shown in the figure) are respectively arranged at the rear ends of the left second moving installation block and the right second moving installation block. The left second hydraulic cylinder and the right second hydraulic cylinder are respectively connected to the left second moving installation block and the right second moving installation block through corresponding ball joints and ball seats; the left first hydraulic cylinder and the right first hydraulic cylinder can respectively drive the left first moving installation block and the right first moving installation block to move forward and backward, and the left second hydraulic cylinder and the right second hydraulic cylinder can respectively drive the left second moving installation block and the right second moving installation block to move forward and backward, so as to adjust the distance between the two squeezing rollers and the friction plate.

[0057] In this embodiment, the shapes of the surfaces on both sides of the friction plate 4 that cooperate with the two extrusion rollers can be adjusted according to actual needs. As a preferred embodiment, as Figure 3 shown, the surfaces on both sides of the friction plate 4 that cooperate with the first extrusion roller 2 and the second extrusion roller 3 are inclined surfaces; as Figure 7 shown, the surfaces on both sides of the friction plate 4 that cooperate with the first extrusion roller 2 and the second extrusion roller 3 are arc surfaces.

[0058] As Figure 8 shown, the friction plate 4 is composed of a friction plate body 401, a front buffer layer 402, a rear buffer layer 403, a front friction layer 404, and a rear friction layer 405. The front buffer layer 402 and the rear buffer layer 403 (collectively referred to as the buffer layer) are fixedly connected to the friction plate body 401 (which can be bonded with strong glue or connected with screws), and the front and rear friction layers (collectively referred to as the friction layer) are fixedly connected to the buffer layer (which can be bonded with strong glue or connected with screws). The surfaces of the front friction layer 404 and the rear friction layer 405 respectively constitute the surfaces of the friction plate 4 that cooperate with the two extrusion rollers. In addition, when the friction plate 4 adopts the above structure, the so-called two ends of the friction plate 4 are fixedly connected to the left side plate 101 and the right side plate 102 of the chassis 1 respectively means that the two ends of the friction plate body 401 are fixedly connected to the left side plate 101 and the right side plate 102 of the chassis 1 respectively.

[0059] In this embodiment, the friction plate body 401 is made of cast iron, the front buffer layer 402 and the rear buffer layer 403 are both made of polyurethane elastic material, and the front friction layer 404 and the rear friction layer 405 are made of cemented carbide. The thicknesses of the front buffer layer 402, the rear buffer layer 403, the front friction layer 404, and the rear friction layer 405 are all 3 - 5 mm. The significance of setting the polyurethane elastic material buffer layer in this embodiment is to more effectively prevent the ceramic particles from being pressed too densely. In addition, in order to effectively prevent the ceramic raw materials from being extruded into strips or sheets during the granulation process, in this embodiment, a plurality of rows and columns of conical protrusions integrally formed with the cemented carbide friction layer are provided on the surfaces of the front friction layer 404 and the rear friction layer 405 (not shown in the figure). The cone height of the conical protrusions is 1 - 1.5 mm (the thickness of the front friction layer 404 and the rear friction layer 405 does not include the cone height of the conical protrusions), the radius of the bottom of the conical protrusions is 1 - 1.5 mm, and the distance between adjacent two conical protrusions in the same row or the same column is 1 - 1.5 mm.

[0060] When actually implementing the technical solution of the present utility model, a hot air inlet (not shown in the figure) can also be provided on the chassis 1. Depending on the specific situation, the hot air inlet can be provided on the top plate, bottom plate or side plate of the chassis, and the hot air inlet is communicated with the hot air source outside the system through a heating pipeline. In the case of a humid working environment or when the ceramic raw material particles are damp, dry hot air from the outside can be introduced into the chassis through the hot air inlet, thereby adjusting the dryness and humidity of the ceramic raw material particles and improving the granulation efficiency.

[0061] The above describes the technical solution of Embodiment 1 of the present utility model in conjunction with the accompanying drawings. Next, the technical solution of Embodiment 2 of the present utility model will be further introduced.

[0062] Embodiment 2

[0063] The basic structure of Embodiment 2 is the same as that of Embodiment 1. The difference is that, as Figure 9 shown, in this embodiment, only one extrusion roller, namely the first extrusion roller 2, is provided in the chassis 1; as Figure 10 and in combination with Figure 9 shown, in this embodiment, the friction plate 4 is only provided with a front buffer layer 402 and a front friction layer 404 on the side of the friction plate body 401 facing the first extrusion roller 2.

[0064] When this embodiment works, the ceramic raw materials are extruded and crushed through the cooperation of the first extrusion roller 2 and the friction plate 4. Since only one extrusion roller is provided in the chassis 1 in this embodiment, the left first installation groove, the right first installation groove, the left second installation groove, and the right second installation groove in Embodiment 1 need to be uniformly changed to the left installation groove and the right installation groove in this embodiment. Similarly, the left first moving installation block, the right first moving installation block, the left second moving installation block, and the right second moving installation block in Embodiment 1 need to be uniformly changed to the left moving installation block and the right moving installation block in this embodiment. Other accessories related to the extrusion roller are also streamlined accordingly.

[0065] The technical solutions of the present utility model have been described in detail through two embodiments. It should be noted that under the same conditions, through the weight comparison method and the microscopic observation method, it can be determined that the ceramic powder prepared by the unidirectional extrusion type ceramic granulator of the present utility model has better quality than the ceramic powder prepared by the existing double-roll press - the former is not as dense as the latter. Taking the ceramic powder with a particle size of 3 mm formed after granulation (screened and rounded) as an example, after slicing the ceramic powder and observing it under a microscope, it can be seen that the ceramic powder prepared by the unidirectional extrusion type ceramic granulator of the present utility model contains a large number of micropores, while the ceramic powder prepared by the existing double-roll press (a polyurethane elastic material buffer layer with the same thickness is also provided between the roll surface and the roll body, the same below) only contains a small number of micropores. In addition, the applicant also selected the same volume of ceramic powder prepared by different equipment for a weight comparison experiment. The results of multiple experiments show that the weight of the ceramic powder prepared by the unidirectional extrusion type ceramic granulator of the present utility model is about 91% - 93% of the weight of the ceramic powder prepared by the existing double-roll press (compared under the condition that the raw materials are the same and the humidity after processing is 8%), which also shows that the ceramic powder prepared by the unidirectional extrusion type ceramic granulator of the present utility model has more micropores inside.

[0066] It should be emphasized that in order to save the manufacturing cost of the unidirectional extrusion type ceramic granulator of the present utility model and at the same time to reduce the weight of the equipment, during the actual implementation of the present utility model, the weight of the friction plate 4 should be controlled as much as possible. Of course, the weight of the friction plate 4 is not the lighter the better. From the situation of multiple tests by the inventor during the R & D process, the weight ratio of the friction plate 4 to the extrusion roll (referring to a single extrusion roll, the same below, and in Embodiment 1, the weights and other technical parameters of the two extrusion rolls are the same) should not be lower than 0.36. If the mass ratio of the two is lower than 0.36, it will cause the ceramic granulator to work unstably. In order to ensure the stable operation of the unidirectional extrusion type ceramic granulator of the present utility model and at the same time to avoid the weight of the friction plate 4 from being too large, the weight ratio of the friction plate 4 to the extrusion roll is preferably controlled between 0.36 and 0.39, that is, 0.39 ≥ the weight ratio of the friction plate 4 to the extrusion roll ≥ 0.36.

Claims

1. A one-way extrusion ceramic granulator, characterized in that: It includes an extrusion roller and a friction plate, which are arranged side by side to form a roller gap between the extrusion roller and the friction plate. The friction plate consists of a friction plate body, a buffer layer and a friction layer. The buffer layer is fixedly connected to the friction plate body, and the friction layer is fixedly connected to the buffer layer. The surface of the friction layer constitutes the surface for the friction plate to cooperate with the extrusion roller.

2. The one-way extrusion ceramic granulator according to claim 1, characterized in that: The weight ratio of the friction plate to the squeezing roller is between 0.36 and 0.

39.

3. The one-way extrusion ceramic granulator according to claim 1, characterized in that: The surface where the friction plate and the squeezing roller cooperate is an arc surface or an inclined surface.

4. The one-way extrusion ceramic granulator according to claim 1, characterized in that: The friction plate body is made of cast iron, the buffer layer is made of polyurethane elastic material, and the friction layer is made of hard alloy.

5. The one-way extrusion ceramic granulator according to claim 1, characterized in that: The thickness of the buffer layer and the friction layer are both 3-5 mm.

6. The one-way extrusion ceramic granulator according to claim 5, characterized in that: The surface of the friction layer is provided with multiple rows and columns of conical protrusions integrally formed with the friction layer, the cone height of the conical protrusion is 1 to 1.5 mm, the radius of the bottom is 1 to 1.5 mm, and in the same row or column of multiple conical protrusions, the spacing between two adjacent conical protrusions is 1 to 1.5 mm.

7. The one-way extrusion ceramic granulator according to claim 1, characterized in that: It also includes a chassis, the squeezing roller and the friction plate are arranged in the chassis, a feed port is arranged on the top plate of the chassis, a discharge port is arranged on the bottom plate of the chassis, two ends of the friction plate are respectively fixedly connected to the left plate and the right plate of the chassis, the feed port is arranged above the roller gap, the discharge port is arranged below the roller gap, and a hot air inlet is also arranged on the chassis, and the hot air inlet is connected to a hot air source outside the system through a heating pipeline; Both ends of the roller shaft of the squeezing roller are respectively connected to the left bearing assembly and the right bearing assembly symmetrically arranged on the left side plate and the right side plate of the chassis. One end of the roller shaft of the squeezing roller extends beyond the left side plate of the chassis and is connected to the driving motor. The left bearing assembly and the right bearing assembly are both installed on the left side plate and the right side plate of the chassis in a manner that they can move forward and backward. By moving the two sets of bearing assemblies forward and backward, the distance between the squeezing roller and the friction plate can be adjusted.

8. The one-way extrusion ceramic granulator according to claim 7, characterized in that: A left mounting groove and a right mounting groove are symmetrically arranged on the left side plate and the right side plate of the chassis, and a left movable mounting block and a right movable mounting block which can move forward and backward relative to the left side plate and the right side plate are respectively arranged in the left mounting groove and the right mounting groove, and the left bearing assembly and the right bearing assembly are respectively mounted on the left movable mounting block and the right movable mounting block.

9. The one-way extrusion ceramic granulator according to claim 8, characterized in that: The extrusion rollers are two, that is, the extrusion rollers are divided into a first extrusion roller and a second extrusion roller, the first extrusion roller and the second extrusion roller are arranged in parallel, and the friction plate is arranged between the first extrusion roller and the second extrusion roller. Correspondingly, the left mounting groove is divided into a left first mounting groove and a left second mounting groove, and the right mounting groove is divided into a right first mounting groove and a right second mounting groove; the left movable mounting block is divided into a left first movable mounting block and a left second movable mounting block, and the right movable mounting block is divided into a right first movable mounting block and a right second movable mounting block; the left bearing assembly is divided into a left first bearing assembly and a left second bearing assembly, and the right bearing assembly is divided into a right first bearing assembly , the second right bearing assembly; the first left bearing assembly and the first right bearing assembly are respectively mounted on the first left movable mounting block and the first right movable mounting block, and the second left bearing assembly and the second right bearing assembly are respectively mounted on the second left movable mounting block and the second right movable mounting block; the first left movable mounting block and the first right movable mounting block are respectively arranged in the first left mounting groove and the first right mounting groove, and the second left movable mounting block and the second right movable mounting block are respectively arranged in the second left mounting groove and the second right mounting groove; the two ends of the roller shaft of the first extrusion roller are respectively connected to the first left bearing assembly and the first right bearing assembly, and the two ends of the roller shaft of the second extrusion roller are respectively connected to the second left bearing assembly and the second right bearing assembly.

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