Vacuum devolatilization anti-blocking device of extruder

Abstract

The utility model provides a vacuum devolatilization anti-blocking device of an extruder, which comprises the extruder, a sealing cover is fixedly arranged above the extruder, a devolatilization pipe is arranged in the sealing cover, the devolatilization pipe is fixedly connected with the extruder, an exhaust pipe is arranged on one side of the sealing cover, and the exhaust pipe is communicated with the devolatilization pipe. The threaded sleeve is attached to the pipe wall of the devolatilization pipe under the centrifugal force generated when the transmission rod rotates, then materials are stirred and extruded out, when an extrusion opening is blocked, the rotating speed of the transmission rod is reduced, the threaded sleeve is shrunk towards the inner side of the transmission rod through the spring rod, the distance between the threaded sleeve and the pipe wall of the devolatilization pipe is increased, and therefore the materials can be stirred and extruded out. Materials are accumulated in the movable space of the pipe wall of the devolatilization pipe under the operation of the threaded sleeve, so that the situation that the vacuum cleaning effect of an extrusion opening is reduced due to the fact that the materials are still continuously extruded after the extrusion opening is blocked is prevented, the material mixing effect is further improved, meanwhile, continuous extrusion of an extruder during blocking is prevented, and the cleaning effect of the vacuum anti-blocking device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of extruder equipment, in particular to a vacuum devolatilization anti-blocking device for an extruder. Background Art

[0002] The extruder vacuum devolatilization anti-blocking device is usually a device used to prevent the extrusion port from being blocked during the operation of the extruder. After the material is heated to a certain temperature in the devolatilization extrusion tube, an additive that helps the volatile matter escape is added to the material and mixed with it to devolatilize the material. When the material is blocked during extrusion, the vacuum system is triggered to generate a vacuum to attract or extract the material near the extrusion port. Most extruder vacuum devolatilization anti-blocking devices are automatically controlled. This design can improve the production efficiency of the extruder and ensure that the material near the extrusion port can be extruded smoothly.

[0003] The "vacuum devolatilization device of the extruder" described in the patent application number "CN202221207424.1" is a technical solution. In this device, a slow feeding structure is set up to prompt the material to slowly enter the extrusion tube, which helps to avoid the accumulation of materials inside the extrusion tube, improves the devolatilization efficiency of the equipment for the material, and improves the practicability of the equipment.

[0004] However, the applicant believes that the device has the following problems when in use: when the existing materials are mixed in the devolatilization extrusion tube, the extrusion rod in the devolatilization extrusion tube is mostly arranged to fit the tube wall. Although this arrangement can improve the extrusion effect of the material, it reduces the mixing effect of the material and the auxiliary agent for escaping volatiles. At the same time, when the extrusion port is blocked, in order to reduce the downtime in production, the extruder will still keep running, so that the extrusion rod will still transport the material to the extrusion port, thereby reducing the cleaning effect of the vacuum anti-blocking device.

[0005] To this end, we provide an extruder vacuum devolatilization anti-blocking device. Utility Model Content

[0006] The main purpose of the utility model is to provide an extruder vacuum devolatilization anti-blocking device, which can effectively solve the problem raised in the background technology that although the setting can improve the extrusion effect of the material, it reduces the mixing effect of the material and the auxiliary agent for volatile matter escape, thereby causing part of the extruded material to fail to meet the use requirements.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] An extruder vacuum devolatilization anti-blocking device comprises an extruder, a sealing cover is fixedly installed above the extruder, a devolatilization pipe is arranged inside the sealing cover, and the devolatilization pipe is fixedly connected to the extruder, an exhaust pipe is arranged on one side of the sealing cover, and the exhaust pipe is connected through the devolatilization pipe, a transmission rod is movably installed inside the devolatilization pipe, a plurality of threaded sleeves are nested and installed on the outside of the transmission rod, spring rods are embedded and installed inside the threaded sleeves, a baffle is arranged on one side of the spring rod, and the baffle is embedded and connected to the threaded sleeve, and an extrusion port is installed through one side of the devolatilization pipe.

[0009] In the above scheme, preferably, a fixed base is fixedly connected below the extruder, a driving machine is fixedly installed on one side of the fixed base, a fixed platform is provided on one side of the driving machine, and the fixed platform is fixedly connected to the fixed base.

[0010] In the above scheme, preferably, a transmission belt is installed on the middle part of the driving machine and the fixed platform, a differential is fixedly installed above the fixed platform, and a transmission connection is arranged between the transmission belt and the differential.

[0011] In the above scheme, preferably, a transmission shaft is embedded and installed on one side of the differential, a docking joint is provided on one side of the transmission rod, and the docking joint is nested and connected with the transmission shaft.

[0012] In the above scheme, preferably, a feed hopper is provided above one side of the sealing cover, and the feed hopper is connected to the devolatilization tube, a plurality of heat pipes are nested and installed outside the devolatilization tube, and a heater is installed below each of the heat pipes.

[0013] In the above scheme, preferably, the thread on the threaded sleeve is a triangular thread arranged around, and the threaded sleeve is arranged in three sections and wrapped around the outside of the transmission rod.

[0014] Beneficial Effects

[0015] Compared with the prior art, the utility model has the following beneficial effects: the vacuum devolatilization anti-blocking device for the extruder is provided with a threaded sleeve, a spring rod, an extrusion port and other devices, the threaded sleeve is fitted to the wall of the devolatilization tube under the centrifugal force generated when the transmission rod rotates, and then the material is stirred and extruded; when the extrusion port is blocked, the rotation rate of the transmission rod is reduced so that the spring rod shrinks the threaded sleeve toward the inside of the transmission rod to increase the distance between the threaded sleeve and the wall of the devolatilization tube, and the material is accumulated in the active space with the wall of the devolatilization tube under the operation of the threaded sleeve, thereby preventing the material from being continuously extruded after the extrusion port is blocked, reducing the vacuum cleaning effect of the extrusion port, and thereby improving the mixing effect of the material, while preventing the continuous extrusion of the extruder when blocked, and improving the cleaning effect of the vacuum anti-blocking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the internal structure of the sealing cover of the utility model.

[0019] Figure 3 It is a schematic diagram of the local structure of the material pipe of the utility model.

[0020] Figure 4 It is a schematic diagram of the local structure of the transmission rod of the utility model.

[0021] Figure 5 It is a schematic diagram of the local structure of the threaded casing of the utility model.

[0022] Figure 6 It is a schematic diagram of the local structure of the spring rod of the utility model.

[0023] Figure 1-6 In: 1. fixed base; 2. driving machine; 3. transmission belt; 4. fixed platform; 5. differential; 6. transmission shaft; 7. extruder; 8. feed hopper; 9. sealing cover; 10. exhaust pipe; 11. heating machine; 12. heat conduction pipe; 13. devolatilization pipe; 14. transmission rod; 1401, threaded sleeve; 1402, spring rod; 1403, baffle; 15, extrusion port. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1-6As shown, in this embodiment, an extruder vacuum devolatilization anti-blocking device comprises an extruder 7, a sealing cover 9 is fixedly installed above the extruder 7, a devolatilization pipe 13 is arranged inside the sealing cover 9, and the devolatilization pipe 13 is fixedly connected to the extruder 7, an exhaust pipe 10 is arranged on one side of the sealing cover 9, and the exhaust pipe 10 is connected through the devolatilization pipe 13, a transmission rod 14 is movably installed on the inner side of the devolatilization pipe 13, a plurality of threaded sleeves 1401 are nested and installed on the outer side of the transmission rod 14, a spring rod 1402 is embedded and installed on the inner side of the threaded sleeve 1401, a baffle 1403 is arranged on one side of the spring rod 1402, and the baffle 1403 is embedded and connected with the threaded sleeve 1401, an extrusion port 15 is installed through one side of the devolatilization pipe 13, the thread on the threaded sleeve 1401 is a triangular thread surrounding arrangement, and the threaded sleeve 1401 is a three-stage arrangement enclosed on the outer side of the transmission rod 14;

[0026] Specifically, in this way, when the heat-conducting pipe 12 heats the devolatilization pipe 13, it is covered by the sealing cover 9 to improve safety. When the transmission shaft 6 drives the transmission rod 14 to rotate and operate in the devolatilization pipe 13, the threaded sleeve 1401 adheres to the wall of the devolatilization pipe 13 under the centrifugal force generated when the transmission rod 14 rotates, thereby stirring and extruding the material. Since the threaded sleeve 1401 is surrounded by a triangular thread, the threaded sleeve 1401 is three-stage and enclosed on the outside of the transmission rod 14. The material is stirred in multiple stages through the space when the threaded sleeve 1401 and the wall of the devolatilization pipe 13 are in operation, so that the material is subjected to directionally extruded and stirred in the space between the threaded sleeve 1401 and the wall of the devolatilization pipe 13, thereby improving the mixing effect of the material and the volatilization additive. When the extrusion port 15 is blocked, , the rotation rate of the transmission rod 14 is reduced by the transmission shaft 6, and then the threaded sleeve 1401 is retracted toward the inside of the transmission rod 14 through the spring rod 1402, so as to increase the distance between the threaded sleeve 1401 and the wall of the devolatilization tube 13, and the activity space of the material in the threaded sleeve 1401 and the wall of the devolatilization tube 13 is increased accordingly. When the equipment still keeps operating, the material accumulates in the activity space with the wall of the devolatilization tube 13 under the operation of the threaded sleeve 1401, thereby preventing the material from being continuously extruded after the extrusion port 15 is blocked, thereby reducing the vacuum cleaning effect of the extrusion port 15. When the threaded sleeve 1401 is attached to the wall of the devolatilization tube 13 and the threaded sleeve 1401 is retracted toward the inside of the transmission rod 14, the baffle 1403 is used to prevent the material from entering the threaded sleeve 1401 and the spring rod 1402.

[0027] like Figure 1-6As shown, in this embodiment, a fixed base 1 is fixedly connected to the lower part of the extruder 7, a driving machine 2 is fixedly installed on one side of the fixed base 1, a fixed platform 4 is provided on one side of the driving machine 2, and the fixed platform 4 is fixedly connected to the fixed base 1, a transmission belt 3 is installed between the driving machine 2 and the fixed platform 4, a differential 5 is fixedly installed on the upper part of the fixed platform 4, and a transmission connection is arranged between the transmission belt 3 and the differential 5, a transmission shaft 6 is embedded and installed on one side of the differential 5, a butt joint is provided on one side of the transmission rod 14, and the butt joint is nested and connected with the transmission shaft 6;

[0028] Specifically, in this way, when the equipment is installed and used, the driving machine 2, the fixed platform 4, the extruder 7 and other devices are fixedly installed and used through the fixed base 1, and then the installation height of the differential 5 is adjusted through the fixed platform 4, so that the transmission shaft 6 and the transmission rod 14 are kept horizontally installed and used. When in use, the driving machine 2 is used to provide power to the transmission belt 3, and the power is transmitted to the differential 5 through the transmission belt 3. The differential 5 is speed-controlled to control the output rotation rate of the transmission shaft 6, so that the transmission shaft 6 drives the transmission rod 14 to rotate.

[0029] like Figure 1-6 As shown, in this embodiment, a feed hopper 8 is provided above one side of the sealing cover 9, and the feed hopper 8 is connected to the devolatilization tube 13, and a plurality of heat conduction tubes 12 are nested and installed outside the devolatilization tube 13, and a heater 11 is installed below each of the heat conduction tubes 12;

[0030] Specifically, in this way, when in use, the material is guided into the devolatilization tube 13 through the feed hopper 8, and the material is stirred and extruded through the threaded sleeve 1401 in the devolatilization tube 13 through the operation of the transmission rod 14. When the material is in the devolatilization tube 13, the heat pipe 12 is heated by the operation of the heating machine 11, and the heat is transferred to the devolatilization tube 13 through the heat pipe 12, thereby heating and devolatilizing the material in the devolatilization tube 13, and then the gas in the material is discharged through the exhaust pipe 10 to improve the quality of the extruded material.

[0031] It should be noted that when the utility model is used as an extruder vacuum devolatilization anti-blocking device, firstly, the driving machine 2, the fixed platform 4 and the extruder 7 are fixedly installed and used through the fixed base 1, and then the installation height of the differential 5 is adjusted through the fixed platform 4, so that the transmission shaft 6 and the transmission rod 14 are kept horizontally installed and used. When in use, the driving machine 2 is used to provide power for the transmission belt 3, and the power is transmitted to the differential 5 through the transmission belt 3, and the speed of the differential 5 is changed and adjusted to control the output rotation rate of the transmission shaft 6, so that the transmission shaft 6 drives the transmission rod 14 to rotate and operate, and when in use, the material is guided into the devolatilization tube 13 through the feed hopper 8, and the material is stirred and extruded through the threaded sleeve 1401 in the devolatilization tube 13 through the operation of the transmission rod 14, and when the material is in the devolatilization tube 13, the heat pipe 12 is heated by the operation of the heating machine 11, and the heat is transmitted to the devolatilization tube 13 through the heat pipe 12, so that the material in the devolatilization tube 13 is heated and devolatilized;

[0032] When the heat conducting pipe 12 heats the devolatilization pipe 13, it is covered by the sealing cover 9 to improve safety. When the transmission shaft 6 drives the transmission rod 14 to rotate and operate in the devolatilization pipe 13, the threaded sleeve 1401 adheres to the wall of the devolatilization pipe 13 under the centrifugal force generated when the transmission rod 14 rotates, and then the material is stirred and extruded. Since the threaded sleeve 1401 is surrounded by a triangular thread, the threaded sleeve 1401 is three-stage and enclosed on the outside of the transmission rod 14. The material is stirred in multiple stages through the space when the threaded sleeve 1401 and the wall of the devolatilization pipe 13 are in operation, so that the material is subjected to directionally extruded and stirred in the space between the threaded sleeve 1401 and the wall of the devolatilization pipe 13, thereby improving the mixing effect of the material and the volatilization auxiliary agent. When the extrusion port 15 is blocked, the transmission The shaft 6 reduces the rotation speed of the transmission rod 14, and then contracts the threaded sleeve 1401 toward the inside of the transmission rod 14 through the spring rod 1402, so as to increase the distance between the threaded sleeve 1401 and the wall of the devolatilization tube 13, and the activity space of the material in the threaded sleeve 1401 and the wall of the devolatilization tube 13 is increased accordingly. When the equipment still keeps operating, the material accumulates in the activity space with the wall of the devolatilization tube 13 under the operation of the threaded sleeve 1401, thereby preventing the material from being continuously extruded after the extrusion port 15 is blocked, thereby reducing the vacuum cleaning effect of the extrusion port 15. When the threaded sleeve 1401 fits against the wall of the devolatilization tube 13 and the threaded sleeve 1401 contracts toward the inside of the transmission rod 14, the baffle 1403 is used to prevent the material from entering the threaded sleeve 1401 and the spring rod 1402.

[0033] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. The utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. An extruder vacuum devolatilization anti-blocking device, comprising an extruder (7), characterized in that: A sealing cover (9) is fixedly installed above the extruder (7), a devolatilization pipe (13) is arranged inside the sealing cover (9), and the devolatilization pipe (13) is fixedly connected to the extruder (7), an exhaust pipe (10) is arranged on one side of the sealing cover (9), and the exhaust pipe (10) is connected to the devolatilization pipe (13), a transmission rod (14) is movably installed on the inner side of the devolatilization pipe (13), a plurality of threaded sleeves (1401) are nested and installed on the outer side of the transmission rod (14), spring rods (1402) are embedded and installed on the inner side of each of the threaded sleeves (1401), a baffle (1403) is arranged on one side of the spring rod (1402), and the baffle (1403) is embedded and connected to the threaded sleeve (1401), and an extrusion port (15) is installed on one side of the devolatilization pipe (13).

2. The extruder vacuum devolatilization anti-blocking device according to claim 1, characterized in that: A fixed base (1) is fixedly connected below the extruder (7), a driving machine (2) is fixedly installed on one side of the fixed base (1), a fixed platform (4) is provided on one side of the driving machine (2), and the fixed platform (4) is fixedly connected to the fixed base (1).

3. The extruder vacuum devolatilization anti-blocking device according to claim 2, characterized in that: A transmission belt (3) is installed between the driving machine (2) and the middle part of the fixed platform (4), a differential (5) is fixedly installed above the fixed platform (4), and the transmission belt (3) and the differential (5) are arranged in transmission connection.

4. The extruder vacuum devolatilization anti-blocking device according to claim 3, characterized in that: A transmission shaft (6) is embedded and installed on one side of the differential (5), and a docking joint is provided on one side of the transmission rod (14), and the docking joint and the transmission shaft (6) are nested and connected.

5. The extruder vacuum devolatilization anti-blocking device according to claim 1, characterized in that: A feed hopper (8) is provided above one side of the sealing cover (9), and the feed hopper (8) is connected to a devolatilization tube (13). A plurality of heat-conducting tubes (12) are nested and installed on the outer side of the devolatilization tube (13), and a heater (11) is installed below each of the heat-conducting tubes (12).

6. The extruder vacuum devolatilization anti-blocking device according to claim 1, characterized in that: The thread on the threaded sleeve (1401) is a triangular thread arranged in a surrounding manner, and the threaded sleeve (1401) is arranged in three sections and is wrapped around the outside of the transmission rod (14).

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