Sealing device for material door of internal mixer

Abstract

The utility model discloses an internal mixer material door sealing device which comprises a material door body sliding on the front face of a material pressing channel in the vertical direction, the front face of the material pressing channel is fixedly connected with a door frame body with an upper opening, and the front face of the material door body is provided with a side sealing set and a bottom sealing set. A top sealing set is arranged on the back face of the material door body, a driving assembly is arranged on the front face of the material door body, and the driving assembly drives a side sealing set and a bottom sealing set to move, so that the side sealing set and the inner side wall of the door frame body are in surface contact sealing fit, and the bottom sealing set and the inner bottom wall of the door frame body are in surface contact sealing fit. The front face of the material door body is fixedly connected with a pressure intensity adjusting and controlling assembly, and the pressure intensity adjusting and controlling assembly injects pressurizing media into the top sealing set, so that the top sealing set generates elastic deformation sealing pressure facing the front face of the material pressing channel. According to the utility model, the side sealing group, the bottom sealing group and the top sealing group are arranged, so that the periphery of the feeding hole in the material pressing channel can be sealed, and the sealing performance is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of internal mixers, in particular to an internal mixer material door sealing device. BACKGROUND

[0002] In the processing of rubber, plastic and other polymer materials, an internal mixer is a key equipment for mixing, plasticizing and homogenizing various raw materials. The material door sealing device of the internal mixer is an important component for ensuring efficient operation of the equipment and product quality.

[0003] According to the search, the Chinese patent with the publication number CN107901260A discloses an internal mixer feeding door sealing structure. The sealing structure can realize sealing of the feeding door through the action of the sealing strip group driven by the air cylinder, and can prevent the sealing strip group from being abraded and improve the service life. However, the sealing structure only seals the two side positions of the feeding door, and does not seal the top and bottom of the sealing door, which is easy to cause dust leakage from the top and bottom of the sealing door during the rubber mixing process. Therefore, the internal mixer material door sealing device is provided to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing an internal mixer material door sealing device to solve the problems in the background technology.

[0005] The application embodiment adopts the following technical scheme:

[0006] An internal mixer material door sealing device comprises a material door body sliding in a vertical direction on the front of a material pressing channel, the front of the material pressing channel is fixedly connected with a door frame body in an upper opening shape, the front of the material door body is respectively provided with a side sealing group and a bottom sealing group, the back of the material door body is provided with a top sealing group, the front of the material door body is provided with a driving assembly, the driving assembly drives the side sealing group and the bottom sealing group to move, so that the side sealing group and the inner side wall of the door frame body and the bottom sealing group and the inner bottom wall of the door frame body respectively form face contact sealing cooperation, the front of the material door body is fixedly connected with a pressure control assembly, the pressure control assembly injects pressurized medium into the top sealing group, so that the top sealing group generates an elastic deformation sealing pressure towards the front of the material pressing channel.

[0007] Preferably, the number of the side sealing groups is two, each side sealing group comprises a side plate slidingly connected with the front of the material door body, and the outer side of the side plate is fixedly connected with a side sealing strip.

[0008] Preferably, the bottom sealing group comprises a bottom plate slidingly connected with the front of the material door body, and the lower surface of the bottom plate is fixedly connected with a bottom sealing strip.

[0009] Preferably, the drive assembly includes a slider slidably connected to the front of the material gate body, side support rods rotatably connected to both sides of the slider, the ends of the two side support rods away from the slider being rotatably connected to the opposite surfaces of the two side plates respectively, a fixing rod being fixedly connected to the bottom of the slider, the bottom end of the fixing rod being fixedly connected to the upper surface of the base plate, a bracket being fixedly connected to the front of the material gate body, a cylinder being fixedly connected to the front of the bracket, a connecting block being fixedly connected to the upper surface of the slider, and the output end of the cylinder being fixedly connected to the bottom of the connecting block.

[0010] Preferably, a groove is provided on the back of the material gate body, and the top sealing assembly is fixedly connected inside the groove. The top sealing assembly is a bladder with a pressure regulating cavity formed inside, and the pressure regulating cavity is connected to the pressure control component.

[0011] Preferably, the pressure control assembly includes a container for filling pressurized media that is fixedly connected to the front of the material gate body. A connecting pipe is fixedly connected to the bottom of the container, and the pressure regulating chamber is connected to the inner cavity of the container through the connecting pipe.

[0012] Preferably, a piston is slidably connected to the inner wall of the accommodating body, a transmission rod is fixedly connected to the top of the piston, the end of the transmission rod away from the piston is fixedly connected to the top of the connecting block, and a U-shaped limiting plate is fixedly connected to the upper surface of the accommodating body, with the transmission rod passing through the limiting plate.

[0013] The above-described technical solutions adopted in the embodiments of this application can achieve the following beneficial effects:

[0014] In this invention, by setting a driving component, the side sealing assembly is moved horizontally, so that the side sealing assembly forms a surface contact sealing fit with the inner wall of the door frame. At the same time, the bottom sealing assembly is moved vertically, so that the bottom sealing assembly forms a surface contact sealing fit with the inner bottom wall of the door frame. By setting a pressure control component, an additional medium is injected into the top sealing assembly, so that the top sealing assembly generates elastic deformation sealing pressure facing the front of the pressing channel, thereby forming a seal around the feed inlet on the pressing channel and improving the sealing performance. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 Here is a three-dimensional structural schematic diagram of this utility model;

[0017] Figure 2 Here is a three-dimensional structural diagram of the door frame and the material gate body of this utility model;

[0018] Figure 3 The utility model discloses Figure 2 Amplification structural schematic diagram of middle A place;

[0019] Figure 4 The utility model discloses

[0020] Figure 5 The utility model discloses Figure 4 Structural schematic diagram of section along B-B line in middle;

[0021] Figure 6 Structural schematic diagram of side section of the utility model door frame body.

[0022] In the drawing: 1, material pressing channel;2, material door body;3, door frame body;4, side sealing group;41, side plate;42, side sealing strip;5, bottom sealing group;51, bottom plate;52, bottom sealing strip;6, top sealing group;61, pressure regulating cavity;62, capsule;7, drive assembly;71, sliding block;72, side support rod;73, fixed rod;74, support;75, air cylinder;76, connecting block;8, pressure control assembly;81, containing body;82, connecting pipe;83, piston;84, transmission rod;85, limiting plate;9, machine body;10, feed inlet. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantage of the application more clear, the technical scheme of the application will be described clearly and completely in combination with specific embodiments of the application and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0024] The technical scheme provided by each embodiment of the application will be described in detail below in combination with the drawings.

[0025] Please refer to Figures 1-6 The utility model provides a kind of sealing device technical scheme of mixer feed door:

[0026] The utility model provides a sealing device for the material door of an internal mixer, wherein the internal mixer comprises a body 9, the top of the body 9 is provided with a compression channel 1, the compression channel 1 is provided with a compression block pair to generate pressure on the material, the front of the compression channel 1 is provided with an inlet 10, which comprises a material door body 2 sliding along the vertical direction on the front of the compression channel 1, the material door body 2 is driven to move up and down by external power equipment, such as a hydraulic cylinder or a motor, etc., the material door body 2 can completely close the inlet 10 when it moves to the bottom, and the top of the material door body 2 is higher than the inlet 10, the front of the compression channel 1 is fixedly connected with a door frame body 3 in the form of an upper opening, the inner bottom wall of the door frame body 3 is located at the lower part of the inlet 10, the front of the material door body 2 is respectively provided with a side sealing group 4 and a bottom sealing group 5, the back of the material door body 2 is provided with a top sealing group 6, the front of the material door body 2 is provided with a driving assembly 7, the driving assembly 7 drives the side sealing group 4 and the bottom sealing group 5 to move, so that the side sealing group 4 and the inner side wall of the door frame body 3 and the bottom sealing group 5 and the inner bottom wall of the door frame body 3 respectively form a surface contact sealing cooperation, the front of the material door body 2 is fixedly connected with a pressure control assembly 8, the pressure control assembly 8 injects pressurized medium into the top sealing group 6, so that the top sealing group 6 generates an elastic deformation sealing pressure towards the front of the compression channel 1, and the pressurized medium can be liquid medium such as water or oil or gas medium such as air or nitrogen.

[0027] Specifically, by arranging the driving member, the side sealing group 4 is driven to move along the horizontal direction, so that the side sealing group 4 and the inner side wall of the door frame body 3 form a surface contact sealing cooperation, and the bottom sealing group 5 is driven to move along the vertical direction, so that the bottom sealing group 5 and the inner bottom wall of the door frame body 3 form a surface contact sealing cooperation, and by arranging the pressure control assembly 8, the pressurized medium is injected into the top sealing group 6, so that the top sealing group 6 generates an elastic deformation sealing pressure towards the front of the compression channel 1, thereby forming a seal around the inlet 10 on the compression channel 1, and improving the sealing performance.

[0028] The number of the side sealing groups 4 is two, and each side sealing group 4 comprises a side plate 41 slidingly connected with the front of the material door body 2, and the outer side of the side plate 41 is fixedly connected with a side sealing strip 42.

[0029] The bottom sealing group 5 comprises a bottom plate 51 slidingly connected with the front of the material door body 2, and the lower surface of the bottom plate 51 is fixedly connected with a bottom sealing strip 52, wherein the side sealing strip 42 and the bottom sealing strip 52 are both made of rubber material.

[0030] The drive assembly 7 includes a slider 71 slidably connected to the front of the gate body 2. Side support rods 72 are rotatably connected to both sides of the slider 71. The ends of the two side support rods 72 away from the slider 71 are rotatably connected to the opposite surfaces of two side plates 41, respectively. A fixing rod 73 is fixedly connected to the bottom of the slider 71, and the bottom end of the fixing rod 73 is fixedly connected to the upper surface of the base plate 51. A bracket 74 is fixedly connected to the front of the gate body 2, and a cylinder 75 is fixedly connected to the front of the bracket 74. A connecting block 76 is fixedly connected to the upper surface of the slider 71, and the output end of the cylinder 75 is connected to the connecting block 76. The bottom is fixedly connected. The output end of the cylinder 75 drives the slider 71 to move downward. The slider 71 drives the two side support rods 72 to move, changing their angle. The side support rods 72 drive the two side plates 41 to move away from each other in the horizontal direction, which in turn drives the two side sealing strips 42 to move away from each other, so that the side sealing strips 42 form a surface contact seal with the two inner side walls of the door frame 3. At the same time, the slider 71 drives the fixed rod 73 to move downward. The fixed rod 73 drives the bottom plate 51 to move downward, which in turn drives the bottom sealing strip 52 to move downward and form a surface contact seal with the inner bottom wall of the door frame 3.

[0031] The back of the material gate body 2 is provided with a groove, and the top sealing assembly 6 is fixedly connected inside the groove. The top sealing assembly 6 is a bladder 62 with a pressure regulating cavity 61 inside, and the pressure regulating cavity 61 is connected to the pressure control assembly 8.

[0032] The pressure control assembly 8 includes a container 81 for filling pressurizing medium, which is fixedly connected to the front of the material gate body 2. The pressurizing medium is filled inside the container 81. A connecting pipe 82 is fixedly connected to the bottom of the container 81. The pressure regulating chamber 61 is connected to the inner cavity of the container 81 through the connecting pipe 82.

[0033] A piston 83 is slidably connected to the inner wall of the container 81. A transmission rod 84 is fixedly connected to the top of the piston 83. The end of the transmission rod 84 away from the piston 83 is fixedly connected to the top of the connecting block 76. A U-shaped limiting plate 85 is fixedly connected to the upper surface of the container 81. The transmission rod 84 passes through the limiting plate 85. When the slider 71 moves downward, the slider 71 drives the transmission rod 84 to move downward. The transmission rod 84 drives the piston 83 to move downward, increasing the pressure on the pressurizing medium in the container 81. This causes the medium to enter the pressure regulating chamber 61 along the connecting pipe 82, causing the bladder 62 to bulge and generate elastic deformation sealing pressure facing the front of the pressing channel 1, thereby improving the sealing performance of the top of the material gate body 2.

[0034] Working principle: in the process of using the sealing device of the mixer material door, when the material door body 2 is closed and needs to be sealed, the air cylinder 75 is started, the output end of the air cylinder 75 is retracted to drive the sliding block 71 to move downward, the sliding block 71 drives the two side supporting rods 72 to move, so that the angle changes, the side supporting rods 72 drive the two side plates 41 to move away from each other in the horizontal direction, and then drive the two side sealing strips 42 to move away from each other, so that the side sealing strips 42 form a surface contact sealing with the two inner side walls of the door frame body 3, at the same time, the sliding block 71 drives the fixed rod 73 to move downward, the fixed rod 73 drives the bottom plate 51 to move downward, and then drives the bottom sealing strip 52 to move downward to form a surface contact sealing with the inner bottom wall of the door frame body 3, on the other hand, the sliding block 71 drives the transmission rod 84 to move downward, the transmission rod 84 drives the piston 83 to move downward, so as to enhance the pressure of the pressurized medium in the containing body 81, so as to enter the pressure adjusting cavity 61 through the connecting pipe 82, so that the capsule 62 is inflated to generate an elastic deformation sealing pressure towards the front of the pressure material channel 1, improve the sealing performance of the top of the material door body 2, at the same time, when the sealing needs to be removed, the output end of the air cylinder 75 is extended to drive the sliding block 71 to move upward, so as to form a sealing around the inlet 10 of the pressure material channel 1, improve the sealing performance.

[0035] It should also be noted that the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0036] The above only describes the embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the scope of claims of the present application.

Claims

1. A sealing device for a material gate of a mixing mill, comprising a material gate body (2) that slides vertically along the front of a pressing channel (1), wherein a door frame (3) with an upward opening is fixedly connected to the front of the pressing channel (1), characterized in that: The front of the material gate body (2) is provided with a side sealing assembly (4) and a bottom sealing assembly (5), and the back of the material gate body (2) is provided with a top sealing assembly (6). The front of the material gate body (2) is provided with a driving assembly (7). The driving assembly (7) drives the side sealing assembly (4) and the bottom sealing assembly (5) to move, so that the side sealing assembly (4) and the inner side wall of the door frame (3) and the bottom sealing assembly (5) and the inner bottom wall of the door frame (3) respectively form a surface contact sealing fit. The front of the material gate body (2) is fixedly connected with a pressure control assembly (8). The pressure control assembly (8) injects a pressurizing medium into the top sealing assembly (6), so that the top sealing assembly (6) generates an elastic deformation sealing pressure facing the front of the material pressing channel (1).

2. The sealing device for the feed door of a mixer according to claim 1, characterized in that: The number of the side sealing groups (4) is two groups. Each side sealing group (4) includes a side plate (41) that is slidably connected to the front of the material gate body (2). A side sealing strip (42) is fixedly connected to the outside of the side plate (41).

3. The sealing device for the feed door of a mixer according to claim 2, characterized in that: The bottom sealing assembly (5) includes a bottom plate (51) that is slidably connected to the front of the material gate body (2), and a bottom sealing strip (52) is fixedly connected to the lower surface of the bottom plate (51).

4. The sealing device for the feed door of a mixer according to claim 3, characterized in that: The drive assembly (7) includes a slider (71) slidably connected to the front of the material gate body (2). Side support rods (72) are rotatably connected to both sides of the slider (71). The ends of the two side support rods (72) away from the slider (71) are rotatably connected to the opposite surfaces of the two side plates (41). A fixing rod (73) is fixedly connected to the bottom of the slider (71). The bottom end of the fixing rod (73) is fixedly connected to the upper surface of the base plate (51). A bracket (74) is fixedly connected to the front of the material gate body (2). A cylinder (75) is fixedly connected to the front of the bracket (74). A connecting block (76) is fixedly connected to the upper surface of the slider (71). The output end of the cylinder (75) is fixedly connected to the bottom of the connecting block (76).

5. A sealing device for the feed door of a mixer according to claim 4, characterized in that: The back of the material gate body (2) is provided with a groove, and the top sealing assembly (6) is fixedly connected inside the groove. The top sealing assembly (6) is a bladder (62) with a pressure regulating cavity (61) formed inside. The pressure regulating cavity (61) is connected to the pressure control assembly (8).

6. The sealing device for the feed door of a mixer according to claim 5, characterized in that: The pressure control assembly (8) includes a container (81) for filling pressurized medium that is fixedly connected to the front of the material gate body (2). A connecting pipe (82) is fixedly connected to the bottom of the container (81). The pressure regulating chamber (61) is connected to the inner cavity of the container (81) through the connecting pipe (82).

7. A sealing device for the feed door of a mixer according to claim 6, characterized in that: A piston (83) is slidably connected to the inner wall of the accommodating body (81). A transmission rod (84) is fixedly connected to the top of the piston (83). The end of the transmission rod (84) away from the piston (83) is fixedly connected to the top of the connecting block (76). A U-shaped limiting plate (85) is fixedly connected to the upper surface of the accommodating body (81). The transmission rod (84) passes through the limiting plate (85).

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