Gear pump pressurizing and rubber filtering extruder for feeding of double-screw extruder

Abstract

The utility model discloses a gear pump pressurizing and rubber filtering extruder for feeding of a double-screw extruder, which is characterized in that an extruder seat guide rail is mounted on a large base, and a gear pump sliding base is mounted above the gear pump seat guide rail to support a gear pump; the front end of the gear pump is connected with the rubber filter head, and power is provided by a gear pump speed reducer; the rear end of the gear pump is connected with the machine barrel and is locked through a locking device; the double-screw feeding hopper is respectively connected with the front end of the double-screw gearbox and the tail part of the machine barrel; the lower part of the double-screw feeding hopper is connected with the base; the double-screw gear box is positioned above the extruder sliding base, is powered by the double-screw speed reducer and is locked by the locking device; and the hydraulic unit is mounted on the base and respectively provides power for the locking device, the opening and closing of the rubber filter head, the movement of the gear pump sliding base and the extruder sliding base. Compared with a traditional double-screw extruder, the double-screw extruder provided by the utility model is more beneficial to continuous high-pressure stable extrusion processing of precision products.

Description

Technical Field

[0001] The utility model relates to the field of rubber and plastic machinery, in particular to a gear pump pressure filtering rubber extruder for feeding a twin-screw extruder. Background Art

[0002] In the rubber and plastics industry, a higher filtration purity of 50~100MPa or even higher is required. According to the data, some foreign equipment has reached 300MPa, and a finer filter screen is used to filter out finer impurities. Therefore, a higher pressure die is required. Under traditional process conditions, due to the limitation of the extruder structure (the highest die pressure is about 20MPa), it is impossible to obtain a higher filtration pressure and meet the requirements of finer filtration. Utility Model Content

[0003] In order to simplify the production process and discharge the rubber material from the rubber mixing machine directly to the twin-screw feeding extruder, the utility model proposes a gear pump pressurized rubber filtering extruder for feeding the twin-screw extruder, that is, the twin-screw feeding extruder is combined with the gear pump to realize feeding, pressurizing and filtering in one.

[0004] The technical solution to achieve the purpose of this utility model is:

[0005] A gear pump pressure filter rubber extruder for feeding a twin-screw extruder, comprising a base, a gear pump sliding base, an extruder sliding base, a twin-screw reducer, a twin-screw gearbox, a receiving barrel, a twin-screw feeding hopper, a barrel, a gear pump, a gear pump reducer, a filter rubber head, a gear pump seat guide rail, an extruder seat guide rail, a hydraulic unit and a locking device, wherein:

[0006] The guide rails of the extruder seat are installed on the large base, and the gear pump sliding base is installed above the guide rails of the gear pump seat to support the gear pump; the front end of the gear pump is connected to the rubber filter head and powered by the gear pump reducer; the rear end of the gear pump is connected to the barrel and locked by a locking device; the twin-screw feeding hopper is respectively connected to the front end of the twin-screw gearbox and the tail of the barrel; the upper part of the twin-screw feeding hopper is connected to the receiving barrel, and the lower part is connected to the base; the twin-screw gearbox is located above the extruder sliding base, powered by the twin-screw reducer, and locked by a locking device; the hydraulic unit is installed on the base, which provides power for the locking device, opening and closing of the rubber filter head, movement of the gear pump sliding base, and extruder sliding base.

[0007] Furthermore,

[0008] The interior of the twin-screw feeding hopper is double-conical, and a main screw and a secondary screw are horizontally placed therein, wherein the main screw is arranged in the inner cavity of the twin-screw feeding hopper, and the secondary screw is arranged beside the main screw, in a conical arrangement.

[0009] The locking device comprises a front locking device and a rear locking device, wherein:

[0010] The gear pump is locked by the front locking device. When the front locking device is in the loosened state, the gear pump sliding base, gear pump, gear pump reducer and rubber filter head can all move forward and backward as a whole through the gear pump seat guide rail;

[0011] The twin-screw gearbox and the twin-screw feeding hopper are locked by a rear locking device; when the rear locking device is in a loosened state, the extruder sliding base, the twin-screw gearbox, the main screw, the auxiliary screw, and the twin-screw reducer can all move forward and backward as a whole through the extruder base guide rail.

[0012] The hydraulic unit comprises a front hydraulic unit and a rear hydraulic unit, wherein:

[0013] The front hydraulic unit is located at the front of the base, providing power for the front locking device, the opening and closing of the filter head, and the movement of the gear pump sliding base;

[0014] The rear hydraulic unit is located in the middle of the base and provides power for the rear locking device and the movement of the extruder sliding base.

[0015] The utility model discloses a gear pump pressure filter rubber extruder, which uses a gear pump on a twin-screw extruder to obtain high-pressure and constant-volume extrusion, and is equipped with a gear pump seat guide rail and an extruder seat guide rail, so that the gear pump and the twin-screw gear box can move forward and backward, making it convenient for workers to clean the residual rubber on the twin-screw feeding hopper, screw and gear pump. Compared with the traditional twin-screw extruder, it is more conducive to the continuous high-pressure and stable extrusion processing of precision products. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of an embodiment of the utility model;

[0017] Figure 2 A top view of an embodiment of the utility model;

[0018] Figure 3 It is a left view of an embodiment of the utility model.

[0019] In the figure: 1. base, 2. extruder sliding base, 3. gear pump sliding base, 4. twin-screw reducer, 5. twin-screw gearbox, 6. auxiliary screw, 7. main screw, 8. twin-screw feeding hopper, 9. receiving barrel, 10. barrel, 11. gear pump, 12. gear pump reducer, 13. rubber filter head, 14. gear pump seat guide, 15. extruder seat guide, 16. front hydraulic unit, 17. rear hydraulic unit, 18. front locking device, 19. rear locking device. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but is not intended to limit the present invention.

[0021] The utility model discloses a gear pump pressure filter rubber extruder for feeding a twin-screw extruder, which is composed of a base 1, a twin-screw base 2, a gear pump base 3, a twin-screw reducer 4, a twin-screw gear box 5, a secondary screw 6, a main screw 7, a twin-screw feeding hopper 8, a receiving barrel 9, a twin-screw barrel 10, a gear pump 11, a gear pump reducer 12, a filter rubber head 13, a gear pump seat guide 14, an extruder seat guide 15, a front hydraulic unit 16, a rear hydraulic unit 17, a front locking device 18 and a rear locking device 19. Among them:

[0022] The base 1 is provided with a gear pump seat guide rail 14 and an extruder seat guide rail 15;

[0023] The gear pump base 3 is located above the gear pump seat guide rail 14 and is used to support the gear pump 11;

[0024] The front of the gear pump 11 is connected to the rubber filter head 13, which is powered by the gear pump reducer 12, and the rear of the gear pump 11 is connected to the barrel 10, which is locked by the front locking device 18;

[0025] The rear end of the barrel 10 is connected to a twin-screw feeding hopper 8;

[0026] The interior of the twin-screw feeding hopper 8 is double-conical, with a main screw 7 and a secondary screw 6 placed horizontally, the main screw 7 is in the inner cavity of the twin-screw feeding hopper 8, and the secondary screw 6 is beside the main screw 7, arranged in a cone;

[0027] The twin-screw feeding hopper 8 is located at the front end of the twin-screw gear box 5; the upper part is connected to the receiving barrel 9, and the lower part is connected to the base 1;

[0028] The twin screw gear box 5 is located above the twin screw base 2 and is powered by the rear twin screw reducer 4. The twin screw gear box 5 and the twin screw feeding hopper 8 are locked by a rear locking device 19.

[0029] The front hydraulic unit 16 is located at the front of the base 1 and provides power for the front locking device 18, the opening and closing of the filter head 13, and the movement of the gear pump base 3;

[0030] When the front locking device 18 is in the released state, the gear pump base 3, the gear pump 11, the gear pump reducer 12, and the rubber filter head 13 can all move forward and backward as a whole through the gear pump base guide rail 14;

[0031] The rear hydraulic unit 17 is located in the middle of the base 1 and provides power for the rear locking device 19 and the movement of the twin-screw base 2;

[0032] When the rear locking device 19 is in the released state, the extruder base 2 , the twin-screw gearbox 5 , the main screw 7 , the auxiliary screw 6 , and the twin-screw reducer 4 can all move forward and backward as a whole through the extruder base guide rail 15 .

[0033] The utility model discloses a gear pump pressure filtering rubber extruder, which pressurizes the rubber material through a gear pump and then extrude the product through a filtering die head, thereby enabling the rubber material to obtain a higher and more stable pressure, reducing the impurity content of the product and the stability of the product size quality.

[0034] At the same time, when the equipment is cleaning the rubber material, the machine head and gear pump drive the reducer forward, and the gear pump interface is exposed; the extrusion reducer, gear box, and twin-screw extruder move backward, and the screw is exposed as a whole, which is convenient for workers to clean up (especially suitable for changing colors and rubber types to avoid mutual contamination); when the cleaning is completed, the machine head and gear pump, together with the drive reducer, move back, and the hydraulic locking device is locked; the twin-screw extruder hydraulically moves back, the hydraulic locking device is locked, the equipment is fully closed-loop closed to reach the working state, and the equipment continues to work, shortening the work preparation time, reducing the labor intensity of workers, and improving equipment maintainability and production efficiency.

Claims

1. A twin-screw extruder feeding gear pump pressure filter rubber extruder, characterized in that: It includes a base, a gear pump sliding base, an extruder sliding base, a twin-screw reducer, a twin-screw gearbox, a receiving barrel, a twin-screw feeding hopper, a barrel, a gear pump, a gear pump reducer, a rubber filter head, a gear pump seat guide rail, an extruder seat guide rail, a hydraulic unit and a locking device, among which: The guide rails of the extruder seat are installed on the large base, and the gear pump sliding base is installed above the guide rails of the gear pump seat to support the gear pump; the front end of the gear pump is connected to the rubber filter head and powered by the gear pump reducer; the rear end of the gear pump is connected to the barrel and locked by a locking device; the twin-screw feeding hopper is respectively connected to the front end of the twin-screw gearbox and the tail of the barrel; the upper part of the twin-screw feeding hopper is connected to the receiving barrel, and the lower part is connected to the base; the twin-screw gearbox is located above the extruder sliding base, powered by the twin-screw reducer, and locked by a locking device; the hydraulic unit is installed on the base, which provides power for the locking device, opening and closing of the rubber filter head, movement of the gear pump sliding base, and extruder sliding base.

2. The gear pump pressure filter rubber extruder for feeding the twin-screw extruder according to claim 1, characterized in that: The interior of the twin-screw feeding hopper is double-conical, and a main screw and a secondary screw are placed horizontally therein, wherein the main screw is arranged in the inner cavity of the twin-screw feeding hopper, and the secondary screw is arranged beside the main screw, in a conical arrangement.

3. The gear pump pressure filter rubber extruder for feeding the twin screw extruder according to claim 1, characterized in that: The locking device comprises a front locking device and a rear locking device, wherein: The gear pump is locked by the front locking device. When the front locking device is in the loosened state, the gear pump sliding base, gear pump, gear pump reducer and rubber filter head can all move forward and backward as a whole through the gear pump seat guide rail; The twin-screw gearbox and the twin-screw feeding hopper are locked by a rear locking device; when the rear locking device is in a loosened state, the extruder sliding base, the twin-screw gearbox, the main screw, the auxiliary screw, and the twin-screw reducer can all move forward and backward as a whole through the extruder base guide rail.

4. The gear pump pressure filter rubber extruder for feeding the twin-screw extruder according to claim 1, characterized in that: The hydraulic unit comprises a front hydraulic unit and a rear hydraulic unit, wherein: The front hydraulic unit is located at the front of the base, providing power for the front locking device, the opening and closing of the filter head, and the movement of the gear pump sliding base; The rear hydraulic unit is located in the middle of the base and provides power for the rear locking device and the movement of the extruder sliding base.

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