Dustproof rubber internal mixer

Abstract

The utility model relates to the field of internal mixers, in particular to a dust raising prevention type rubber internal mixer which comprises an internal mixer body and a feeding box installed on the internal mixer body, and a feeding channel is formed in the right side wall of the feeding box; a feeding box is arranged outside the feeding box, a feeding groove is formed in the side, close to the feeding box, of the feeding box, and a shielding part is formed in the part, located above the feeding groove, of the box body; a pressing plate is arranged in the feeding box, a first through hole is formed in the left side wall of the feeding box, a suction assembly is installed at the first through hole and comprises a sleeve installed in the first through hole and a filter screen arranged in the sleeve in a sliding mode, and the pressing plate is connected with the filter screen through a transmission assembly so as to drive the filter screen to move. According to the utility model, the liftable feeding box and the feeding channel on the feeding box form a dynamic sealed feeding port, so that a main path for dust overflow is physically isolated, efficient dust suppression is realized from the source, and the working environment is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of internal mixers, and in particular to a dust-proof rubber internal mixer. Background Technology

[0002] The rubber internal mixer is a key piece of equipment in the rubber industry. It prepares a uniform compound by subjecting rubber compounds and various compounding agents (such as carbon black, fillers, and additives) to high-temperature and high-pressure shearing and mixing in a closed chamber.

[0003] The traditional feeding process of an internal mixer involves directly pouring powdered or granular additives into the feed inlet. During this process, the lighter powders (especially carbon black) are easily stirred up by airflow disturbances, which not only wastes raw materials and increases production costs, but also causes serious pollution to the workshop working environment and may lead to safety hazards such as dust explosions.

[0004] In existing technologies, connecting to a central dust collection system is commonly used to improve dust generation during material feeding. However, these methods are mostly passive, peripheral control measures with high energy consumption and limited effectiveness in sealing and suppressing dust at the feed inlet of the internal mixer, the primary dust source. In particular, the hot airflow accumulated inside the mixing chamber may carry trace amounts of residual dust back out, which, combined with the falling powder dust, exacerbates the pollution. Utility Model Content

[0005] This invention provides a dust-proof rubber internal mixer to solve the problems mentioned in the background art.

[0006] This utility model is achieved through the following technical solution: a dust-proof rubber internal mixer, including a mixer body and a feeding box installed thereon, wherein a feeding channel is provided on the upper half of the right side wall of the feeding box; a feed box that can reciprocate along its height direction is provided outside the feeding box, and a feed trough selectively connected to the feeding channel is provided on the side of the feed box near the feeding box, and a box body portion above the feed trough forms a shielding part with a height greater than the height of the feeding channel;

[0007] The feeding box is equipped with a pressure plate inside. The left side wall of the feeding box has a first through hole. A suction assembly is installed at the first through hole. The suction assembly includes a sleeve installed at the first through hole and having a suction port, and a filter screen slidably disposed in the sleeve. The pressure plate is connected to the filter screen through a transmission assembly to drive the filter screen to move.

[0008] Optionally, a first propulsion cylinder is installed on the top of the feeding box, and the pressure plate is fixedly connected to the telescopic end of the first propulsion cylinder.

[0009] Optionally, sliders are fixedly connected to the outer walls on both sides of the feeding box, and a slide rod is fixedly connected to the outer wall of the loading box through a slide rod seat, with the sliders and the slide rods slidingly engaged.

[0010] Optionally, a connecting plate is fixedly connected to the bottom of the outer wall of the feeding box, and a second propulsion cylinder is installed on the connecting plate. The outer bottom wall of the feeding box is fixedly connected to the telescopic end of the second propulsion cylinder.

[0011] Optionally, the transmission assembly includes a crossbar, an L-shaped frame, and a spring; the crossbar slides through the sleeve, with one end fixedly connected to the filter screen and the other end fixedly connected to the L-shaped frame; a second through hole is provided on the left side wall of the feed box, and the L-shaped frame is slidably disposed in the second through hole, with one end of the L-shaped frame extending into the feed box abutting against the pressure plate; the spring is sleeved on the crossbar, with both ends connected to the L-shaped frame and the outer wall of the sleeve, respectively, and a crescent-shaped retaining ring is provided on the upper right end of the sleeve.

[0012] Optionally, one end of the L-shaped frame extending into the feed box has a first inclined surface, and the side of the pressure plate is provided with a second inclined surface that cooperates with the first inclined surface.

[0013] Optionally, the internal mixer body is provided with a rotor that rotates relative to the rotor, and the outer wall of the internal mixer body is equipped with a transmission box for driving the rotor to rotate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model forms a dynamic sealed feeding port by means of a liftable feeding box and a feeding channel on the feeding box, which physically isolates the main path of dust overflow, achieves efficient dust suppression from the source, and greatly improves the working environment;

[0016] 2. In this utility model, when the pressure plate moves downward, it first drives the filter screen to slide outward synchronously through the transmission component. Then, the filter screen resets at high speed under the action of the spring, generating violent vibration, which can effectively shake off the rubber particles and compounding agents trapped on the filter screen, thereby avoiding filter screen blockage. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a half-sectional schematic diagram of the present invention;

[0019] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0020] In the diagram: 1. Internal mixer body; 101. Rotor; 102. Transmission box; 2. Feeding box; 201. Feeding channel; 202. Connecting plate; 203. Slide bar seat; 204. Slide bar; 205. First through hole; 206. Second through hole; 3. Pressure plate; 301. Second inclined surface; 4. First propulsion cylinder; 5. Feed box; 501. Blocking part; 502. Feed trough; 503. Sliding block; 6. Sleeve; 601. Suction port; 602. Filter screen; 7. Transmission assembly; 701. Crossbar; 702. L-shaped frame; 703. Spring; 704. First inclined surface; 705. Retaining ring; 8. Second propulsion cylinder. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] refer to Figures 1 to 3 This embodiment provides a dust-proof rubber internal mixer, which mainly includes a mixer body 1, a feeding box 2, a pressure plate 3, a first propulsion cylinder 4, a feed box 5, a suction assembly, and a transmission assembly 7.

[0023] The internal mixer body 1 provided in this embodiment has a conventional structure, with a rotor 101 rotating relatively inside and a transmission box 102 externally mounted to drive the rotor 101 to rotate. The feeding box 2 is fixedly installed above the top feed inlet of the internal mixer body 1 via a frame (not shown) and docks with the internal mixer body 1. A rectangular feeding channel 201 is formed in the upper half of the right side wall of the feeding box 2. A feed box 5 that can reciprocate vertically is provided on the outer right side of the feeding box 2. A feed groove 502 is formed on the left side wall of the feed box 5, its position and size designed to be precisely aligned with or offset from the feeding channel 201. The box portion above the feed groove 502 forms a shielding part 501, the height of which is greater than the height of the feeding channel 201, ensuring that the feeding channel 201 can be completely closed when not aligned.

[0024] To achieve stable lifting and lowering of the feed box 5, sliders 503 are fixedly connected to its two outer walls. A vertical slide rod 204 is fixedly installed on the outer wall of the loading box 2 via a slide rod seat 203. The sliders 503 and slide rod 204 slide in cooperation, forming a guiding mechanism. A connecting plate 202 is fixedly connected to the bottom of the outer wall of the loading box 2. A second propulsion cylinder 8 is installed on the connecting plate 202, and its telescopic end is fixedly connected to the bottom of the feed box 5. The second propulsion cylinder 8 can drive the feed box 5 to lift and lower.

[0025] The feeding box 2 provided in this embodiment is equipped with a vertically movable pressure plate 3, which is driven by a first propulsion cylinder 4 installed on the top of the box. The main function of the pressure plate 3 is to push the material fed into the feeding box 2 into the internal mixer body 1 below and to initially compact it.

[0026] A first through hole 205 is provided on the left side wall of the feeding box 2, and a suction assembly is installed at the first through hole 205. The assembly includes a sleeve 6 fixed at the first through hole 205 and provided with a suction port 601, and a filter screen 602 slidably disposed in the sleeve 6. The filter screen 602 is used to intercept dust or particles.

[0027] To achieve the linkage between the movement of the pressure plate 3 and the vibration of the filter screen 602, this embodiment includes a transmission assembly 7. The transmission assembly 7 includes:

[0028] Crossbar 701: Slidably inserted through the side wall of sleeve 6, with its right end fixedly connected to filter screen 602.

[0029] L-shaped frame 702: Its vertical section is fixedly connected to the left end of the horizontal bar 701, while its horizontal section extends into the box through the second through hole 206 on the left side wall of the loading box 2. The end of the L-shaped frame 702 extending into the box is machined with a first inclined surface 704.

[0030] Spring 703: Sleeved on crossbar 701, its two ends are fixedly connected to the outer wall of L-shaped frame 702 and sleeve 6 respectively and are in a stretched state, providing elastic force for filter screen 602 to return to the right.

[0031] Half-moon shaped retaining ring 705: Located at the upper right end of the sleeve 6, used to restrict the filter screen 602 and prevent it from falling out of the sleeve 6.

[0032] Corresponding to the first inclined surface 704 of the L-shaped frame 702, a second inclined surface 301 is provided on the upper left side of the pressure plate 3 to cooperate with it.

[0033] Working process and principle:

[0034] Step 1. The operator puts the rubber raw material and powdered compounding agent (such as carbon black) into the feed box 5 from above. The second propulsion cylinder 8 is activated to drive the feed box 5 to rise, so that its feed trough 502 is aligned with the feeding channel 201 of the feeding box 2. The material falls into the feeding box 2 through the feeding channel 201.

[0035] Step 2. After feeding is complete, the second propulsion cylinder 8 drives the feeding box 5 to descend, and its shielding part 501 re-closes the feeding channel 201, achieving a physical seal at the feeding port. Simultaneously, the first propulsion cylinder 4 drives the pressure plate 3 downward. Before the pressure plate 3 descends, its side abuts against the L-shaped frame 702 outward, forcing the L-shaped frame 702 to drive the crossbar 701 and filter screen 602 to overcome the tension of the spring 703. After the pressure plate 3 descends, the spring 703 pulls the L-shaped frame 702 to the right momentarily until the upper part of the filter screen 602 collides with the retaining ring 705 and vibrates. This shakes off and disperses the rubber particles and compounding agent powder that adhered to the filter screen 602 in the previous mixing cycle. The shaken-off material falls directly back to the lower part of the feeding box 2 and mixes with the main material.

[0036] Step 3. After the pressure plate 3 descends, it compacts the loose material. At the same time, the internal mixer body 1 performs the internal mixing process. The suction port 601 is connected to the negative pressure source for dust suction. The dust is effectively intercepted by the filter screen 602. As dust accumulates on the filter screen 602, it will be further sucked to slide to the left side of the sleeve 6. The right section of the sleeve 6 can form a dust accumulation area, which can be pushed out of the sleeve 6 by the filter screen 602 that moves to the right.

[0037] Step 4. After the mixing is completed, the pressure plate 3 moves upward and returns, and the second inclined surface 301 at its upper end abuts against the L-shaped frame 702 again and pushes it outward, while the spring 703 continues to store energy to shake off the powder in the next mixing cycle.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust-proof rubber internal mixer, comprising a mixer body (1) and a feeding box (2) installed thereon, characterized in that: The upper half of the right side wall of the feeding box (2) is provided with a feeding channel (201); the outside of the feeding box (2) is provided with a feeding box (5) that can move back and forth along its height direction. The feeding box (5) is provided with a feeding groove (502) that selectively communicates with the feeding channel (201) on the side near the feeding box (2), and the box body above the feeding groove (502) forms a shielding part (501) with a height greater than that of the feeding channel (201). The feeding box (2) is provided with a pressure plate (3) inside. The left side wall of the feeding box (2) is provided with a first through hole (205). A suction assembly is installed at the first through hole (205). The suction assembly includes a sleeve (6) installed at the first through hole (205) and provided with a suction port (601) and a filter screen (602) slidably disposed in the sleeve (6). The pressure plate (3) is connected to the filter screen (602) through a transmission assembly (7) to drive the filter screen (602) to move.

2. The dust-proof rubber mixer according to claim 1, characterized in that: The top of the feeding box (2) is equipped with a first propulsion cylinder (4), and the pressure plate (3) is fixedly connected to the telescopic end of the first propulsion cylinder (4).

3. The dust-proof rubber internal mixer according to claim 1, characterized in that: The feed box (5) has sliders (503) fixedly connected to the outer walls on both sides, and the feed box (2) has a slide rod (204) fixedly connected to the outer wall through a slide rod seat (203). The sliders (503) and the slide rod (204) slide in cooperation.

4. The dust-proof rubber internal mixer according to claim 3, characterized in that: A connecting plate (202) is fixedly connected to the bottom of the outer wall of the feeding box (2), and a second propulsion cylinder (8) is installed on the connecting plate (202). The outer bottom wall of the feeding box (5) is fixedly connected to the telescopic end of the second propulsion cylinder (8).

5. A dust-proof rubber internal mixer according to claim 1, characterized in that: The transmission assembly (7) includes a crossbar (701), an L-shaped frame (702), and a spring (703); the crossbar (701) slides through the sleeve (6), one end of which is fixedly connected to the filter screen (602), and the other end is fixedly connected to the L-shaped frame (702); a second through hole (206) is provided on the left side wall of the feed box (5), the L-shaped frame (702) is slidably disposed in the second through hole (206), and one end of the L-shaped frame (702) extending into the feed box (5) abuts against the pressure plate (3); the spring (703) is sleeved on the crossbar (701), and its two ends are respectively connected to the L-shaped frame (702) and the outer wall of the sleeve (6), and a crescent-shaped retaining ring (705) is provided on the upper right end of the sleeve (6).

6. A dust-proof rubber internal mixer according to claim 5, characterized in that: The L-shaped frame (702) has a first inclined surface (704) at one end that extends into the feed box (5), and the side of the pressure plate (3) is provided with a second inclined surface (301) that cooperates with the first inclined surface (704).

7. The dust-proof rubber internal mixer according to claim 1, characterized in that: The internal mixer body (1) is provided with a rotor (101) that rotates relative to the rotor (101), and the outer wall of the internal mixer body (1) is provided with a transmission box (102) for driving the rotor (101) to rotate.

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