Constant-temperature stirring rubber plasticizing device

Abstract

The utility model relates to the technical field of rubber processing, in particular to a constant-temperature stirring rubber plasticizing device, which comprises a plasticizing bin, a spiral propelling structure, a heating component and a driving component, the heating part is used for heating raw materials in the plasticizing bin; the spiral propelling structure comprises a central shaft, a spiral blade, a fixed seat, a movable seat and a driving motor, the central shaft is rotatably arranged in the plasticizing bin, the driving motor is mounted outside the plasticizing bin, an output shaft of the driving motor is fixedly connected with the central shaft, and the fixed seat is fixed outside the central shaft. According to the utility model, the spiral blades can be driven to stretch out and draw back in a reciprocating manner in the plasticizing process, larger rubber raw materials are crushed by utilizing the distance change of adjacent blades of the spiral blades, the stirring and mixing degree of the rubber raw materials is improved, and meanwhile, rubber attached outside the central shaft can be scraped off through the movement of the spiral blades and the movable seat, so that the rubber raw materials are uniformly mixed. And the subsequent cleaning difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber processing, and particularly relates to a constant-temperature stirring rubber plasticizing device. Background Art

[0002] In the desulfurization and plasticizing process of vulcanized rubber powder, it usually includes processes such as batching, stirring and mixing, desulfurization and plasticizing, and cooling. Among them, stirring and mixing is an important link to uniformly mix the proportioned materials inside the plasticizing device. At present, most commonly used plasticizing devices adopt a screw rod structure to realize the transportation and mixing of rubber raw materials. In the actual application process, the traditional screw rod type plasticizing device has at least the following deficiencies: First, during the plasticizing process, the rubber raw materials need to be heated to a molten state to achieve the plasticizing effect. However, the molten rubber has strong adhesiveness and is easy to adhere to the surface of the screw rod, causing difficulties in equipment cleaning and affecting the subsequent processing quality and efficiency. Second, since the screw rod mainly drives the materials forward by the screw propulsion effect, its shearing and crushing ability for the materials is limited. Especially when dealing with waste rubber recycling materials, it is difficult to achieve rapid and effective crushing and uniform mixing, thus reducing the overall plasticizing efficiency and product quality. In view of the above problems, the utility model proposes a constant-temperature stirring rubber plasticizing device. Content of the Utility Model

[0003] The purpose of the utility model is to provide a constant-temperature stirring rubber plasticizing device to solve the problems put forward in the above background art.

[0004] The utility model is achieved through the following technical solutions:

[0005] A constant-temperature stirring rubber plasticizing device includes a plasticizing bin, a screw propulsion structure, a heating component, and a driving component. Among them, a feed inlet and a discharge outlet are respectively arranged at both ends of the plasticizing bin; the heating component is used to heat the raw materials in the plasticizing bin; the screw propulsion structure includes a central shaft, screw blades, a fixed seat, a movable seat, and a driving motor. The central shaft is rotatably arranged in the plasticizing bin. The driving motor is installed outside the plasticizing bin, and the output shaft of the driving motor is fixedly connected to the central shaft. The fixed seat is fixed outside the central shaft. The movable seat is movably sleeved outside the central shaft. The screw blades are movably sleeved outside the central shaft and are fixedly connected to the fixed seat and the movable seat at both ends respectively; the driving component can drive the movable seat to move along the axial direction of the central shaft.

[0006] Optionally, the driving component includes a cylinder and a top block. The cylinder is fixedly installed on the plasticizing bin. The top block is arranged on the side of the movable seat facing away from the fixed seat. The top block is in sliding or rolling contact with the movable seat. The output shaft of the cylinder is fixedly connected to the top block.

[0007] Optionally, a ball is provided on one side of the top block facing the movable seat, and the top block is in rolling contact with the movable seat through the ball.

[0008] Optionally, a plurality of balls are provided, and the plurality of balls are arranged circumferentially along the central axis. A ring-shaped rolling groove is provided on one side of the movable seat facing the top block, and the balls roll along the rolling groove when the movable seat rotates relative to the top block.

[0009] Optionally, the heating component is an electromagnetic induction heating coil provided outside the plasticizing bin, and both the central axis and the spiral blade are made of conductor materials.

[0010] Optionally, a cooling device is provided at the discharge port, and the cooling device is used to cool the material discharged through the discharge port.

[0011] Optionally, the discharge port is of a tubular structure, and the cooling device is a cooling bin wrapped outside the discharge port. The cooling bin has a cooling medium inlet and a cooling medium outlet.

[0012] Optionally, the feed port is in the shape of a funnel, and a preheating bin is wrapped outside the feed port. The preheating bin has a preheating medium inlet and a preheating medium outlet.

[0013] Optionally, the cooling medium outlet and the preheating medium inlet are connected by a pipe.

[0014] Optionally, the driving component includes a reciprocating lead screw and a transmission component. The reciprocating lead screw includes a lead screw and a slider. The lead screw is rotatably connected to the plasticizing bin, the slider is connected between the movable seat and the lead screw, and the transmission component is provided between the central axis and the lead screw.

[0015] Compared with the prior art, the present utility model provides a constant-temperature stirring rubber plasticizing device, which has the following beneficial effects:

[0016] 1. By the combined use of the plasticizing bin, the screw propulsion structure, the heating component and the driving component, the present utility model can drive the spiral blade to reciprocate and stretch during the plasticizing process, and use the change in the distance between adjacent blades of the spiral blade to crush larger rubber raw materials, improving the stirring and mixing degree of the rubber raw materials. At the same time, the movement of the spiral blade and the movable seat can also scrape off the rubber attached to the outside of the central axis, reducing the subsequent cleaning difficulty;

[0017] 2. By providing the balls and the rolling grooves, the balls can reduce the friction between the top block and the movable seat, thereby reducing the load on the driving motor. The rolling grooves can limit the swing of the movable seat in the radial direction of the central axis, improving the stability during the rotation of the spiral blade;

[0018] 3. The cooling medium outlet of the present utility model is connected to the preheating medium inlet through a pipe. The water discharged from the cooling medium outlet already has a certain temperature. By introducing this water into the preheating bin through the pipe, this part of heat can be effectively recovered, achieving the purpose of energy conservation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is a structural schematic diagram showing a driving component of the present utility model;

[0021] Figure 3 is of the present utility model Figure 2 structural schematic diagram of the screw propulsion structure and the driving component therein;

[0022] Figure 4 is a structural schematic diagram showing another driving component of the present utility model.

[0023] In the figure: 100, plasticizing bin; 110, feeding port; 111, preheating bin; 112, preheating medium inlet; 113, preheating medium outlet; 120, discharging port; 121, cooling bin; 122, cooling medium inlet; 123, cooling medium outlet; 200, screw propulsion structure; 210, central shaft; 220, screw blade; 230, fixed seat; 240, movable seat; 241, rolling groove; 250, driving motor; 300, heating component; 400, driving component; 410, cylinder; 420, top block; 430, ball; 440, transmission component; 450, lead screw; 460, slider; 500, pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment: Please refer to Figures 1 to 3, according to an embodiment of the present utility model, a constant-temperature stirring rubber plasticizing device is provided, which includes a plasticizing bin 100, a screw propulsion structure 200, a heating component 300, and a driving component 400. Among them, a feed inlet 110 and a discharge outlet 120 are respectively arranged at both ends of the plasticizing bin 100; the heating component 300 is used to heat the raw materials in the plasticizing bin 100; the screw propulsion structure 200 includes a central shaft 210, screw blades 220, a fixed seat 230, a movable seat 240, and a driving motor 250. The central shaft 210 is rotatably arranged in the plasticizing bin 100. The driving motor 250 is installed outside the plasticizing bin 100, and the output shaft of the driving motor 250 is fixedly connected to the central shaft 210. The fixed seat 230 is fixed outside the central shaft 210. The movable seat 240 is movably sleeved outside the central shaft 210. The screw blades 220 are movably sleeved outside the central shaft 210 and are respectively fixedly connected to the fixed seat 230 and the movable seat 240 at both ends; the driving component 400 can drive the movable seat 240 to move axially along the central shaft 210.

[0026] For the constant-temperature stirring rubber plasticizing device with the above structure, rubber raw materials (such as waste rubber, plasticizer, etc.) are added into the plasticizing bin 100 through the feed inlet 110. Then, the heating component 300 and the driving motor 250 are started. The heating component 300 can be used to heat the rubber raw materials in the plasticizing bin 100 to the temperature required for plasticization. The driving motor 250 drives the central shaft 210 and the screw blades 220 to rotate. The raw materials are stirred and mixed under the push of the screw blades 220 and slowly move towards the discharge outlet 120. During this period, the driving component 400 can be used to drive the top block 420 to reciprocate in the plasticizing bin 100, drive the movable seat 240 to reciprocate on the central shaft 210, and thus push the screw blades 220 to expand and contract. When the screw blades 220 expand and contract, larger rubber raw materials will be crushed by the adjacent blades of the screw blades 220, improving the stirring and mixing degree of the rubber raw materials. At the same time, the movement of the screw blades 220 and the movable seat 240 can also scrape off the rubber attached to the outside of the central shaft 210, reducing the subsequent cleaning difficulty.

[0027] In this exemplary embodiment, the driving component 400 includes a cylinder 410 and a top block 420. The cylinder 410 is fixedly installed on the plasticizing bin 100. A top block 420 is arranged on the side of the movable seat 240 facing away from the fixed seat 230. The top block 420 is in sliding or rolling contact with the movable seat 240. The output shaft of the cylinder 410 is fixedly connected to the top block 420. With such a setting, when it is necessary to drive the movable seat 240 to move axially along the central shaft 210, the top block 420 can be driven to move by controlling the expansion and contraction of the cylinder 410, so as to push the movable seat 240 to move axially along the central shaft 210.

[0028] In the present exemplary embodiment, a ball 430 is provided on the side of the top block 420 facing the movable seat 240, and the top block 420 is in rolling contact with the movable seat 240 through the ball 430. With such a setting, the frictional force between the top block 420 and the movable seat 240 can be reduced, thereby reducing the load on the drive motor 250.

[0029] In the present exemplary embodiment, a plurality of balls 430 are provided. The plurality of balls 430 are arranged circumferentially along the central axis 210. A ring-shaped rolling groove 241 is provided on the side of the movable seat 240 facing the top block 420. The balls 430 roll along the rolling groove 241 when the movable seat 240 rotates relative to the top block 420. The rolling groove 241 can limit the radial swing of the movable seat 240 along the central axis 210, and improve the stability during the rotation of the spiral blade 220.

[0030] In the present exemplary embodiment, the heating component 300 is an electromagnetic induction heating coil provided outside the plasticizing chamber 100, and both the central axis 210 and the spiral blade 220 are made of conductor materials. With such a setting, when it is necessary to heat the rubber raw material in the plasticizing chamber 100, an alternating current can be applied to the electromagnetic induction heating coil, so that the central axis 210 and the spiral blade 220 located in the plasticizing chamber 100 can be heated, and then the rubber raw material can be heated evenly.

[0031] In the present exemplary embodiment, a cooling device is provided at the discharge port 120, and the cooling device is used to cool the material discharged through the discharge port 120. By providing the cooling device, the rubber about to be discharged through the discharge port 120 can be cooled, so that the rubber can enter the next process as soon as possible.

[0032] In the present exemplary embodiment, the discharge port 120 is of a tubular structure, and the cooling device is a cooling chamber 121 covering the outside of the discharge port 120. The cooling chamber 121 has a cooling medium inlet 122 and a cooling medium outlet 123. With such a setting, the cooling medium inlet 122 is connected to an external flowing water source, and the cooling water enters the cooling chamber 121 through the cooling medium inlet 122 and then is discharged through the cooling medium outlet 123. When flowing through the cooling chamber 121, the cooling water can take away the heat of the rubber discharged through the discharge port 120, thereby achieving the purpose of cooling the rubber.

[0033] In the present exemplary embodiment, the feed inlet 110 is in the shape of a funnel, and the outside of the feed inlet 110 is covered with a preheating chamber 111. The preheating chamber 111 has a preheating medium inlet 112 and a preheating medium outlet 113. With such a setting, by introducing water at an appropriate temperature into the preheating chamber 111 through the preheating medium inlet 112, the purpose of preheating the rubber raw material in the feed inlet 110 can be achieved.

[0034] In this exemplary embodiment, the cooling medium outlet 123 and the preheating medium inlet 112 are connected by a pipe 500. With this arrangement, the water discharged from the cooling medium outlet 123 already has a certain temperature. By introducing this water into the preheating chamber 111 through the pipe 500, this part of the heat can be effectively recovered, achieving the purpose of energy conservation.

[0035] In another embodiment, as Figure 4 shown, the driving component 400 includes a reciprocating lead screw and a transmission component 440. The reciprocating lead screw includes a lead screw 450 and a slider 460. The lead screw 450 is rotatably connected to the plasticizing chamber 100. The slider 460 is connected between the movable seat 240 and the lead screw 450. The transmission component 440 is disposed between the central shaft 210 and the lead screw 450. Specifically in this embodiment, the transmission component 440 is a belt. It can be understood that the reciprocating lead screw can be rotated manually or by using a motor, thereby driving the movable seat 240 to reciprocate within the plasticizing chamber 100. Of course, as long as the movable seat 240 can be driven to reciprocate within the plasticizing chamber 100, there is no particular limitation on the specific structural form of the driving component 400.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A constant-temperature stirring rubber plasticizing device, characterized in that, It includes a plasticizing bin (100), a screw propulsion structure (200), a heating component (300), and a driving component (400). Among them, a feeding port (110) and a discharging port (120) are respectively arranged at both ends of the plasticizing bin (100); the heating component (300) is used to heat the raw materials in the plasticizing bin (100); the screw propulsion structure (200) includes a central shaft (210), screw blades (220), a fixed seat (230), a movable seat (240), and a driving motor (250). The central shaft (210) is rotatably arranged in the plasticizing bin (100), the driving motor (250) is installed outside the plasticizing bin (100), and the output shaft of the driving motor (250) is fixedly connected to the central shaft (210). The fixed seat (230) is fixed outside the central shaft (210), the movable seat (240) is movably sleeved outside the central shaft (210), and the screw blades (220) are movably sleeved outside the central shaft (210) and are respectively fixedly connected to the fixed seat (230) and the movable seat (240) at both ends; the driving component (400) can drive the movable seat (240) to move axially along the central shaft (210).

2. The constant-temperature stirring rubber plasticizing device according to claim 1, wherein: The driving component (400) includes a cylinder (410) and a top block (420). The cylinder (410) is fixedly installed on the plasticizing bin (100). The top block (420) is arranged on one side of the movable seat (240) facing away from the fixed seat (230). The top block (420) is in sliding or rolling contact with the movable seat (240), and the output shaft of the cylinder (410) is fixedly connected to the top block (420).

3. The constant-temperature stirring rubber plasticizing device according to claim 2, wherein: A ball (430) is arranged on the side of the top block (420) facing the movable seat (240), and the top block (420) is in rolling contact with the movable seat (240) through the ball (430).

4. The constant-temperature stirring rubber plasticizing device according to claim 3, wherein: A plurality of the balls (430) are arranged. The plurality of balls (430) are arranged circumferentially along the central shaft (210). A ring-shaped rolling groove (241) is arranged on the side of the movable seat (240) facing the top block (420). The balls (430) roll along the rolling groove (241) when the movable seat (240) rotates relative to the top block (420).

5. The constant temperature stirring rubber plasticizing device according to claim 1, characterized in that: The heating component (300) is an electromagnetic induction heating coil arranged outside the plasticizing bin (100), and both the central shaft (210) and the screw blades (220) are made of conductor materials.

6. The constant-temperature stirring rubber plasticizing device according to claim 1, wherein: A cooling device is arranged at the discharging port (120), and the cooling device is used to cool the materials discharged through the discharging port (120).

7. The constant-temperature stirring rubber plasticizing device according to claim 6, wherein: The discharging port (120) is of a tubular structure, and the cooling device is a cooling bin (121) wrapped outside the discharging port (120). The cooling bin (121) has a cooling medium inlet (122) and a cooling medium outlet (123).

8. The constant-temperature stirring rubber plasticizing device according to claim 7, characterized in that: The feed inlet (110) is in the shape of a funnel, and the outside of the feed inlet (110) is covered with a preheating chamber (111), and the preheating chamber (111) has a preheating medium inlet (112) and a preheating medium outlet (113).

9. The constant temperature stirring rubber plasticizing device according to claim 8, characterized in that: The cooling medium outlet (123) is connected to the preheating medium inlet (112) through a pipe (500).

10. The constant-temperature stirring rubber plasticizing device according to claim 1, wherein: The driving component (400) includes a reciprocating lead screw and a transmission component (440). The reciprocating lead screw includes a lead screw (450) and a slider (460). The lead screw (450) is rotatably connected to the plasticizing chamber (100). The slider (460) is connected between the movable seat (240) and the lead screw (450). The transmission component (440) is arranged between the central shaft (210) and the lead screw (450).

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