De-volatile gear pump direct pressurization rubber batch-out machine

Abstract

The utility model discloses a devolatilization gear pump direct pressurization rubber discharging machine which comprises a conical machine barrel, a conical screw rod is installed in the conical machine barrel, and the conical screw rod is connected with a first power rotating mechanism. Wherein the discharging end of the conical machine barrel is communicated with a rubber gear pump; the device can be used for devolatilizing and discharging rubber in a closed space in a continuous feeding and sheet discharging manner, and is characterized in that devolatilization is carried out under the condition that a material environment is isolated from an operator in the devolatilization process, continuous devolatilization and discharging are realized, and the continuous devolatilization and discharging are realized. The rubber material scorching caused by long-time retention of the rubber material at high temperature is prevented, the devolatilization time is shortened, the devolatilization efficiency is improved, and the devolatilization energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the field of rubber processing, in particular to a rubber sheet cutter with a devolatilization gear pump for direct pressurization. Background Art

[0002] The removal of volatile substances in rubber is a very important operation unit in the field of rubber manufacturing. During the rubber processing, there are always solvent residues, some impurities and moisture that have not fully participated in the reaction to a certain extent. These substances will affect the quality and service performance of rubber products. Therefore, in the rubber production process, it is necessary to treat low-molecular volatile substances and moisture and volatilize them from the rubber.

[0003] Usually, when high polymers are devolatilized, they are in a vacuum and high-temperature environment. In this environment, it is necessary to avoid the rubber compound staying for too long and causing scorching, resulting in a reduction in the performance and quality of the product. Summary of the Utility Model

[0004] To solve the problem of scorching caused by the long residence time of the rubber compound, the utility model provides a rubber sheet cutter with a devolatilization gear pump for direct pressurization, which performs sheet cutting treatment on the rubber compound on the basis of rubber devolatilization.

[0005] A rubber sheet cutter with a devolatilization gear pump for direct pressurization includes a conical barrel, a conical screw is installed in the conical barrel, and the conical screw is connected with a first power rotating mechanism; wherein, the discharge end of the conical barrel is communicated with a rubber gear pump, a feed hopper is arranged on the upper part of the conical barrel, a cover is installed on the top of the feed hopper, and the feed hopper is communicated with a vacuum pump through a gas pipeline; two herringbone gears meshing with each other are installed in the rubber gear pump, and the herringbone gears are respectively connected with a second power rotating mechanism; a sheet outlet is formed on the outer side surface of the rubber gear pump.

[0006] Further improvement, the conical screw is a conical twin screw.

[0007] Further improvement, the rubber gear pump is provided with a temperature sensor and a pressure sensor.

[0008] Further improvement, the second power rotating mechanism includes an asynchronous motor, the asynchronous motor is connected with a universal joint coupling through a reducer, baffles are respectively installed on the left and right sides of the rubber gear pump, the universal joint coupling passes through the baffle and is connected with one end of the herringbone gear, and the other end of the herringbone gear is connected with a rotary joint.

[0009] Further improvement, the baffle is connected with a locking cylinder.

[0010] Further improvement, the baffle is connected with a hinge baffle, and the hinge baffle is connected with a profile plate lock.

[0011] For further improvement, the first power rotating mechanism includes an asynchronous motor, which is connected to a gear transmission box through an elastic pin coupling, and the gear transmission box is connected to a conical screw.

[0012] The effective benefits of the present utility model:

[0013] For the rubber down slicer with direct pressurization by a devolatilization gear pump described in the present utility model, through the arrangement of a horizontally placed three-phase asynchronous motor, a universal coupling, and a gear pump, when the herringbone gears that mesh with each other rotate in opposite directions, the air pressure difference generated by gear meshing is utilized to achieve the suction and release of the rubber compound. Moreover, the rubber compound is in a high-temperature and high-pressure environment at the conical screw, and the volatile components diffuse and evaporate on the surface as the conical screw rotates. Additionally, the series connection of the extruder and the gear pump enables continuous operation, which can prevent the scorching of the rubber compound caused by too long residence time, increase the devolatilization efficiency, and reduce the devolatilization energy consumption.

[0014] For the rubber down slicer with direct pressurization by a devolatilization gear pump described in the present utility model, through a three-phase asynchronous motor, a coupling, a conical twin-screw extruder, and a gear pump, the conical barrel and the gear pump are fixedly connected via a locking cylinder. The conical twin-screw extruder is used for devolatilization, mixing, and conveying of the rubber compound, and then sends it to the gear pump for further supplementary mixing, and finally extrudes the sheet through a die plate. The entire operation process is automated, convenient to use, reduces labor, and lowers the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0016] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a rubber down slicer with direct pressurization by a devolatilization gear pump provided by the present utility model;

[0017] Figure 2 FIG. 2 is a front view structural schematic diagram of a rubber down slicer with direct pressurization by a devolatilization gear pump provided by the present utility model;

[0018] Figure 3 FIG. 3 is a side view structural schematic diagram of a rubber down slicer with direct pressurization by a devolatilization gear pump provided by the present utility model;

[0019] Figure 4 FIG. 4 is a top view structural schematic diagram of a rubber down slicer with direct pressurization by a devolatilization gear pump provided by the present utility model.

[0020] Figure 5 FIG. 5 is a partial structural schematic diagram of a rubber down slicer with direct pressurization by a devolatilization gear pump provided by the present utility model.

[0021] In the figure: 1. Locking cylinder; 2. Conical barrel; 3. Baffle; 4. Temperature sensor; 5. Herringbone gear; 6. Reducer; 7. Universal joint coupling; 8. Hinge baffle; 9. Gear pump; 10. Pressure sensor; 11. Die plate lock; 12. Rotary joint; 13. Bracket; 14. Gear transmission box; 15. Elastic pin coupling; 16. Asynchronous motor; 17. Vacuum pump; 18. Conical screw; 19. Feed hopper; 20. Cover; 21. Gas pipeline; 22. Sheet outlet. Detailed implementation mode

[0022] In order to make the technical means, achieved purpose and efficacy realized by the present utility model easy to understand, the following further elaborates in combination with the specific implementation mode.

[0023] As Figures 1-4 shown, a volatile-removing gear pump direct-pressure rubber sheet cutter of the present utility model includes a rubber gear pump 9 and a conical screw 18; a conical barrel 2 is connected behind the gear pump 9, baffles 3 are connected to the left and right sides of the gear pump 9, the gear pump 9, the conical barrel 2 and the baffles 3 are pin-connected through a locking cylinder 1, a temperature sensor 4 and a pressure sensor 10 are arranged on the gear pump 9, the baffle 3 is connected with a hinge baffle 8, the hinge baffle 8 is connected with a die plate lock 11, the herringbone gear 5 is connected with a universal joint coupling 7, the universal joint coupling 7 is connected with a reducer 6, the reducer 6 is connected with an asynchronous motor 16, the asynchronous motor 16 is connected with a bracket 13, a conical screw 18 is arranged in the conical barrel 2, the conical screw is connected with a transmission box 14, the transmission box 14 is connected with an elastic pin coupling 15, and the elastic pin coupling 15 is connected with a motor reduction box; a vacuum pumping device is arranged on the conical screw part, and is connected with a vacuum pump 17 to pump and absorb the removed volatile substances.

[0024] Specifically, the herringbone gears mesh and rotate in opposite directions, and are designed in an X shape to make the material tend to both sides, and a cooling water channel is arranged in the middle.

[0025] Specifically, the gear pump 9 is provided with an axially communicating water channel, bolt holes are arranged at the bottom, and is bolt-connected to the bracket 13, and temperature sensors and pressure sensors are arranged.

[0026] Specifically, the gear pump 9 and the die plate are hinged, and a sheet outlet corresponding to the die plate is arranged in the middle, and is in front of the die plate.

[0027] Specifically, the conical barrel 2, the left and right baffles 3 and the gear pump 9 are locked by a locking cylinder, and a conical pin is used to connect and lock the barrel, the pressing plate and the pump body.

[0028] Specifically, the locking cylinder 1 is arranged on a support plate, and the support plate is bolt-connected to the bracket.

[0029] Specifically, the vacuum pumping device is composed of a vacuum pump 17 and a gas pipeline, and is used to collect the volatile gases generated during the devolatilization of the conical screw part.

[0030] When using this devolatilizing rubber sheet cutter, first connect the external power supply to drive the conical extruder and the gear pump to operate. Add the rubber compound to the inlet of the extruder. The rubber compound is kneaded and conveyed by the conical extruder, and the volatiles are removed. Then it is conveyed to the gear pump, and the kneaded rubber compound is pressurized and sheeted by a pair of herringbone gears that mesh with each other. Utilize the air pressure difference generated by gear meshing to achieve the suction and release of the rubber compound. Then the rubber compound is formed and sheeted through the die plate. The volatile gas collection device is arranged above the conical screw, and is driven by a vacuum pump to extract air and absorb the removed volatile substances. This is the working principle of this devolatilizing rubber sheet cutter.

[0031] The above has shown and described the basic principles, main features and advantages of the present utility model. Therefore, those skilled in the art can think of various modifications, changes and alternative solutions without departing from the spirit and scope of this article.

Claims

1. A rubber sheeting machine with a gear pump that can release volatility and directly pressurizes the rubber sheet, characterized in that: The invention comprises a conical barrel (2), a conical screw (18) is installed in the conical barrel (2), and the conical screw (18) is connected to a first power rotating mechanism; wherein the discharge end of the conical barrel (2) is connected to a rubber gear pump (9), a feed hopper (19) is arranged on the upper part of the conical barrel (2), a sealing cover (20) is installed on the top of the feed hopper (19), and the feed hopper (19) is connected to a vacuum pump (17) through a gas pipeline (21); two mutually meshing herringbone gears (5) are installed in the rubber gear pump (9), and the herringbone gears (5) are respectively connected to a second power rotating mechanism; and a sheet outlet (22) is formed on the outer side surface of the rubber gear pump (9).

2. The rubber sheeting machine with a devolatile gear pump directly pressurized as claimed in claim 1, characterized in that: The conical screw (18) is a conical twin screw.

3. The rubber sheeting machine with a devolatile gear pump directly pressurized as claimed in claim 1, characterized in that: The rubber gear pump (9) is provided with a temperature sensor (4) and a pressure sensor (10).

4. The rubber sheeting machine with a devolatile gear pump directly pressurized as claimed in claim 1, characterized in that: The second power rotating mechanism comprises an asynchronous motor (16), the asynchronous motor (16) is connected to a universal joint coupling (7) via a reducer (6), baffles (3) are respectively installed on the left and right sides of the rubber gear pump (9), the universal joint coupling (7) passes through the baffle (3) and is connected to one end of the herringbone gear (5), and the other end of the herringbone gear (5) is connected to a rotating joint (12).

5. The rubber sheeting machine with a devolatile gear pump directly pressurized as claimed in claim 4, characterized in that: The baffle (3) is connected to a locking cylinder (1).

6. The rubber sheeting machine with a devolatile gear pump directly pressurized as claimed in claim 4, characterized in that: The baffle (3) is connected to a hinge baffle (8), and the hinge baffle (8) is connected to a mouth plate locker (11).

7. The rubber sheeting machine with a devolatile gear pump directly pressurized as claimed in claim 4, characterized in that: The first power rotating mechanism comprises an asynchronous motor (16), the asynchronous motor (16) is connected to a gear transmission box (14) via an elastic pin coupling (15), and the gear transmission box (14) is connected to a conical screw (18).

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