Spiral feeding anti-blocking structure of silicon carbide ceramic extruder

Abstract

The utility model relates to a spiral feeding anti-blocking structure of a silicon carbide ceramic extruder, which belongs to the technical field of extruders and comprises a rack, a machine barrel is fixedly mounted on the rack, a spiral rod is arranged in the machine barrel in a penetrating manner, the machine barrel is rotatably connected with the spiral rod, an extrusion die is mounted at the front end of the machine barrel, and the machine barrel is fixedly connected with a feed hopper; a flow guide main channel is formed in the axis position of the screw rod, a plurality of branch channels are formed in the flow guide main channel, the tail end of the screw rod is connected with a high-pressure fan, and the flow guide main channel communicates with an air outlet of the high-pressure fan; a filter screen is detachably mounted in the feed hopper; residual raw materials in the machine barrel are subjected to high-pressure blowing through the high-pressure fan, hardening and caking of the residues are avoided, meanwhile, the filter screen is arranged to filter the raw materials, and large hard impurities are prevented from entering the spiral feeding device; the screw feeding device of the extruder can be effectively prevented from being blocked, normal production of equipment is guaranteed, and product quality and production efficiency are improved.

Description

Technical Field

[0001] The utility model relates to an anti-blocking structure for spiral feeding of a silicon carbide ceramic extruder, belonging to the technical field of extruders. Background Art

[0002] A silicon carbide ceramic extruder is a device used for ceramic production, mainly used to form various ceramic products by extruding ceramic raw materials. Its working principle is: the ceramic raw materials are extruded from the barrel through the pressure generated by the rotation of the screw, and pass through a specific die to form the required shape. During the extrusion process, the raw materials are gradually compressed and conveyed under the push of the screw, and finally extruded through the die to become a ceramic blank with a certain shape and size.

[0003] However, the spiral feeding device of the existing silicon carbide ceramic extruder is very easy to be blocked, and it needs to be shut down and overhauled frequently, seriously affecting the normal production of the workshop. The main reasons for the blockage are as follows:

[0004] 1. When the raw material particles entering the extruder are uneven, such as containing large hard impurities or fibrous substances, they will get stuck in the gap between the feeding screw and the barrel, hindering the raw material transportation;

[0005] 2. After the extruder stops working, it is not convenient to thoroughly clean the residual raw materials in the barrel. After the residues harden, they form lumps, causing blockage when starting up next time. Content of the Utility Model

[0006] According to the above deficiencies in the prior art, the technical problem to be solved by the utility model is: to provide an anti-blocking structure for spiral feeding of a silicon carbide ceramic extruder, which can effectively avoid the blockage of the spiral feeding device of the extruder, ensure the normal production of the equipment, and improve the product quality and production efficiency.

[0007] The anti-blocking structure for spiral feeding of the silicon carbide ceramic extruder described in the utility model includes a frame, on which a barrel is fixedly installed. A screw rod passes through the barrel, and the barrel is rotatably connected to the screw rod. An extrusion die is installed at the front end of the barrel, and the barrel is fixedly connected to a feed hopper; a main diversion channel is arranged at the axis position of the screw rod, and a number of branch channels are arranged on the main diversion channel. The end of the screw rod is connected to a high-pressure blower, and the main diversion channel is communicated with the air outlet of the high-pressure blower; a filter screen is detachably installed in the feed hopper.

[0008] The technical solution of the utility model is to provide an anti-blocking structure for spiral feeding of a silicon carbide ceramic extruder. By arranging a main diversion channel and branch channels on the screw rod and connecting them to a high-pressure blower, after the equipment stops, the residual raw materials in the barrel are blown with high pressure to avoid the hardening and caking of the residues. At the same time, a filter screen is set to filter the raw materials to prevent large hard impurities from entering the spiral feeding device and causing blockage, ensuring the normal operation of the equipment.

[0009] Preferably, a check valve is installed on the screw rod, and the check valve is located on the branch channel to prevent raw materials from entering the channel and affecting purging.

[0010] Preferably, a plurality of air-cooling covers are sleeved on the outer wall of the barrel. The bottom of the air-cooling cover is connected to a blower through a pipeline, and the blower is used to cool the barrel to prevent the raw materials from softening or melting prematurely and adhering to the inner wall of the barrel, resulting in blockage.

[0011] Preferably, a sleeve is installed at the end of the screw rod. The sleeve is rotatably connected to the screw rod through a bearing; a pulley is also fixedly installed on the screw rod, and the pulley is connected to a driving motor through a belt for transmission.

[0012] Preferably, a level gauge is installed on the feed hopper. The level gauge is located above the filter screen and is electrically connected to the control system; when the filter screen is blocked, the material level in the feed hopper continuously rises. When it reaches the height of the level gauge, an alarm is triggered to remind the staff to handle it in time.

[0013] Preferably, the barrel is connected to the frame through a barrel fixing seat.

[0014] The beneficial effects of the present utility model compared with the prior art are as follows:

[0015] For the anti-blocking structure of screw feeding of the silicon carbide ceramic extruder of the present utility model, the residual raw materials in the barrel are purged under high pressure by a high-pressure blower to avoid hardening and caking of the residues. At the same time, a filter screen is provided to filter the raw materials to prevent large hard impurities from entering the screw feeding device; the present utility model can effectively avoid blockage of the screw feeding device of the extruder, ensure the normal production of the equipment, and improve the product quality and production efficiency. Brief Description of the Drawings

[0016] Figure 1 is the structural schematic diagram of the present utility model;

[0017] Figure 2 is the sectional view of the present utility model;

[0018] Figure 3 is the structural schematic diagram of the screw rod;

[0019] Figure 4 is the broken view of the sectional view of the screw rod.

[0020] In the figure: 1, frame; 2, blower; 3, driving motor; 4, high-pressure blower; 5, barrel; 6, level gauge; 7, feed hopper; 8, filter screen; 9, barrel fixing seat; 10, air-cooling cover; 11, extrusion die; 12, screw rod; 13, check valve; 14, pulley; 15, sleeve; 16, main diversion channel; 17, branch channel. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with specific embodiments.

[0022] However, the description of the present invention is merely an embodiment of structural and even functional description, and the scope of rights of the present invention is not limited by the embodiments described in the text.

[0023] For example, multiple embodiments may have multiple changes and multiple forms, and it should be understood that the scope of rights of the present utility model includes equivalents that can realize the technical idea.

[0024] like Figures 1 to 4 As shown, this embodiment is implemented through the following technical scheme: it includes a frame 1, a barrel 5 is fixedly installed on the frame 1, a screw rod 12 is passed through the barrel 5, the barrel 5 is rotatably connected to the screw rod 12, an extrusion die 11 is installed at the front end of the barrel 5, and the barrel 5 is fixedly connected to the feed hopper 7; a main guide channel 16 is provided at the axial position of the screw rod 12, a plurality of branch channels 17 are provided on the main guide channel 16, the end of the screw rod 12 is connected to the high-pressure fan 4, and the main guide channel 16 is connected to the air outlet of the high-pressure fan 4; a filter screen 8 is detachably installed in the feed hopper 7.

[0025] In this embodiment, a one-way valve 13 is installed on the screw rod 12, and the one-way valve 13 is located on the branch channel 17 to prevent the raw material from entering the channel and affecting the purge. The outer wall of the barrel 5 is provided with a plurality of air-cooling covers 10, and the bottom of the air-cooling cover 10 is connected to the blower 2 through a pipeline. The blower 2 cools the barrel 5 to prevent the raw material from softening or melting prematurely and adhering to the inner wall of the barrel 5 to cause blockage. A sleeve 15 is installed at the end of the screw rod 12, and the sleeve 15 is rotatably connected to the screw rod 12 through a bearing; a pulley 14 is also fixedly installed on the screw rod 12, and the pulley 14 is connected to the drive motor 3 through a belt. A material level meter 6 is installed on the feed hopper 7, and the material level meter 6 is located above the filter screen 8, and the material level meter 6 is electrically connected to the control system; when the filter screen 8 is blocked, the material level in the feed hopper 7 continues to rise, and when it reaches the height of the material level meter 6, an alarm is triggered to remind the staff to deal with it in time. The barrel 5 is connected to the frame 1 through the barrel fixing seat 9.

[0026] When the utility model is loading, the raw materials are filtered through the filter screen 8 to prevent large hard impurities from entering the barrel 5 and causing blockage, thereby ensuring the normal operation of the equipment; when the utility model is stopped, the high-pressure blower 4 is started to blow the residual raw materials in the barrel 5 under high pressure to prevent the residue from hardening and agglomerating;

[0027] Certainly, the above content is only a preferred embodiment of the present utility model and cannot be considered as limiting the scope of the embodiments of the present utility model. The present utility model is not limited to the above examples either. Equivalent changes and improvements made by those of ordinary skill in the art within the essence of the present utility model shall fall within the scope covered by the patent of the present utility model.

Claims

1. A spiral feeding anti-blocking structure for a silicon carbide ceramic extruder, characterized in that: The invention comprises a frame (1), a barrel (5) is fixedly mounted on the frame (1), a screw rod (12) is passed through the barrel (5), the barrel (5) is rotatably connected to the screw rod (12), an extrusion die (11) is mounted at the front end of the barrel (5), and the barrel (5) is fixedly connected to a feed hopper (7); a main flow guide channel (16) is arranged at the axis of the screw rod (12), a plurality of branch channels (17) are arranged on the main flow guide channel (16), the end of the screw rod (12) is connected to a high-pressure fan (4), and the main flow guide channel (16) is connected to an air outlet of the high-pressure fan (4); a filter screen (8) is detachably mounted in the feed hopper (7); a pulley (14) is also fixedly mounted on the screw rod (12), and the pulley (14) is connected to a drive motor (3) through a belt.

2. The spiral feeding anti-blocking structure of silicon carbide ceramic extruder according to claim 1 is characterized in that: A one-way valve (13) is installed on the spiral rod (12), and the one-way valve (13) is located on the branch channel (17).

3. The spiral feeding anti-blocking structure of silicon carbide ceramic extruder according to claim 1 is characterized in that: The outer wall of the barrel (5) is provided with a plurality of air cooling covers (10), and the bottom of the air cooling covers (10) is connected to the blower (2) through a pipeline.

4. The spiral feeding anti-blocking structure of the silicon carbide ceramic extruder according to claim 2 is characterized in that: A sleeve (15) is installed at the end of the spiral rod (12), and the sleeve (15) is rotatably connected to the spiral rod (12) via a bearing.

5. The spiral feeding anti-blocking structure of silicon carbide ceramic extruder according to claim 1 is characterized in that: A material level meter (6) is installed on the feed hopper (7), the material level meter (6) is located above the filter screen (8), and the material level meter (6) is electrically connected to the control system.

6. The spiral feeding anti-blocking structure of silicon carbide ceramic extruder according to claim 2 is characterized in that: The barrel (5) is connected to the frame (1) via a barrel fixing seat (9).

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