Novel sealing mechanism of internal mixer

Abstract

The utility model relates to the technical field of rubber and plastic processing equipment, in particular to a novel sealing mechanism of an internal mixer, which comprises an internal mixing chamber, a stirring shaft and a sealing device, the internal mixing chamber comprises an internal mixing groove and side wall plates arranged on two sides of the internal mixing groove, and two ends of the stirring shaft respectively penetrate through the side wall plates on two sides of the internal mixing chamber. The material sealing devices are arranged at the connecting positions of the two ends of the stirring shaft and the side wall plates, a support is arranged on the lower portion of the internal mixing chamber, the two ends of the stirring shaft are movably connected with the support through bearing seats, and stirring blades are arranged in the middle section of the stirring shaft. The mode of combining the wear-resistant static ring and the wear-resistant movable ring is adopted, the sealing performance of sealing materials between the stirring shaft and the internal mixing chamber is improved, the overall service life of the internal mixer is prolonged, and the internal mixer is suitable for internal mixing of various different rubber and plastic materials at different speeds.

Description

Technical Field

[0001] This utility model relates to the technical field of rubber and plastic processing equipment, and specifically to a novel sealing mechanism for a mixer. Background Technology

[0002] For the purpose of material recycling, internal mixers are widely used production equipment in the current plastics industry. In the current tipping bucket internal mixer and drop mixer, the connection between the mixing chamber and the stirring shaft is only sealed with flanges and ordinary sealing rings during the rubber mixing process, which cannot achieve the purpose of efficient lubrication and sealing. Furthermore, water cooling cannot be circulated around the flange seat, so it can only dry grind at high temperature, which cannot achieve the purpose of efficient flow lubrication and sealing. This leads to a decrease in the stirring shaft speed and a reduction in production efficiency. In the long term, it will also generate break-in noise, accelerate the wear of the sealing rings, reduce the sealing effect, and cause material leakage from both ends of the stirring shaft in the mixing chamber, thus affecting the service life of the equipment. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a novel sealing mechanism for a mixing mill. This mechanism has a reasonable structural design and uses sealing devices at the connection points between the mixing shaft and the side wall of the mixing chamber. By combining wear-resistant stationary rings and wear-resistant moving rings, the sealing performance between the mixing shaft and the mixing chamber is improved, thereby extending the overall service life of the mixing mill and adapting to the mixing of various rubber and plastic materials at different speeds.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A novel internal mixer sealing mechanism includes a mixing chamber, a stirring shaft, and a sealing device. The mixing chamber comprises a mixing tank and side wall plates on both sides of the mixing tank. The two ends of the stirring shaft pass through the side wall plates on both sides of the mixing chamber. The sealing device is located at the connection points between the two ends of the stirring shaft and the side wall plates. A support is provided at the lower part of the mixing chamber. The two ends of the stirring shaft are movably connected to the support via bearing seats. A stirring blade is provided in the middle section of the stirring shaft.

[0006] The sealing device comprises, from the inside out: a wear-resistant stationary ring, a wear-resistant moving ring, a spring washer, a spring, an adjusting screw, and a flange nut;

[0007] The wear-resistant stationary ring is set at both ends of the stirring blade on the stirring shaft, and the wear-resistant stationary ring is provided with an oil injection channel that runs through the inner and outer rings.

[0008] The wear-resistant moving ring is set at both ends of the wear-resistant stationary ring on the stirring shaft. The wear-resistant moving ring has a T-shaped circular structure, and one end of the ring is set corresponding to the wear-resistant stationary ring.

[0009] The spring pads are located at both ends of the stirring shaft and are fitted to the other end of the wear-resistant moving ring. The spring and the adjusting screw are both located between the spring pads and the flange nut.

[0010] Furthermore, the sealing devices at both ends of the stirring shaft are symmetrically arranged, and the wear-resistant stationary rings on the sealing devices are connected to the side wall plates on both sides of the mixing chamber.

[0011] Furthermore, the adjusting screws are arranged in a plurality of equidistant arrays on the flange of the flange nut.

[0012] Furthermore, the head of the adjusting screw is provided with a groove, one end of the spring is placed in the groove of the head of the adjusting screw, and the other end of the spring is in contact with the spring washer.

[0013] The beneficial effects of this utility model are:

[0014] 1. A novel sealing mechanism for an internal mixer, which sets sealing devices at the connection between the two ends of the mixing shaft and the side wall of the mixing chamber, adopts a combination of wear-resistant stationary rings and wear-resistant moving rings, and adds an oil injection structure to achieve a lubrication effect between the wear-resistant stationary rings and the wear-resistant moving rings, and also increases the lubrication of the wear-resistant rings, thereby meeting the requirements of high-speed rotation of the mixing shaft and reducing break-in noise.

[0015] 2. The tightness between the wear-resistant moving ring and the wear-resistant stationary ring can also be adjusted by adjusting the screw, which can improve the sealing performance between the mixing shaft and the mixing chamber, prevent material leakage due to wear of the mixing chamber after long-term use, extend the overall service life of the mixing machine, and adapt to the mixing of various rubber and plastic materials at different speeds. Attached Figure Description

[0016] Figure 1 This is a top view of the present invention;

[0017] Figure 2 This is a cross-sectional schematic diagram of the stirring shaft part of this utility model;

[0018] Figure 3 This is a utility model Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a reference diagram showing the usage state of this utility model. Detailed Implementation

[0020] The following is in conjunction with the appendix Figures 1 to 4The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or / several" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] This utility model discloses a novel sealing mechanism for a mixing mill, comprising a mixing chamber 1, a stirring shaft 2, and a sealing device 10. The mixing chamber 1 includes a mixing tank and side wall plates 11 disposed on both sides of the mixing tank. The two ends of the stirring shaft 2 pass through the side wall plates 11 on both sides of the mixing chamber 1. The sealing device 10 is disposed at the connection points between the two ends of the stirring shaft 2 and the side wall plates 11. A support 3 is disposed at the lower part of the mixing chamber 1. The two ends of the stirring shaft 2 are movably connected to the support 3 through bearing seats 4. A stirring blade 20 is disposed in the middle section of the stirring shaft 2. The sealing device 10 includes, from the inside out: a wear-resistant stationary ring 100, a wear-resistant moving ring 102, and a spring pad 103. The agitator includes a spring 104, an adjusting screw 105, and a flange nut 106. A wear-resistant stationary ring 100 is disposed at both ends of the agitator blades 20 on the agitator shaft 2, and an oil injection channel 101 is provided on the wear-resistant stationary ring 100, penetrating both the inner and outer rings. A wear-resistant moving ring 102 is disposed at both ends of the wear-resistant stationary ring 100 on the agitator shaft 2. The wear-resistant moving ring 102 has a T-shaped circular structure, with one end of the ring corresponding to the wear-resistant stationary ring 100. A spring washer 103 is disposed at both ends of the agitator shaft 2, cooperating with the other end of the wear-resistant moving ring 102. The spring 104 and the adjusting screw 105 are both disposed between the spring washer 103 and the flange nut 106.

[0023] The sealing devices 10 at both ends of the stirring shaft 2 are symmetrically arranged. The wear-resistant stationary ring 100 on the sealing device 10 is connected to the side wall plates 11 on both sides of the mixing chamber 1. The wear-resistant stationary ring and the wear-resistant moving ring are combined to prevent material leakage at the joint between the mixing chamber 1 and the stirring shaft 2.

[0024] The adjusting screws 105 are arranged in a plurality of equidistant arrays on the flange of the flange nut 106.

[0025] The head of the adjusting screw 105 is provided with a groove, and one end of the spring 104 is set in the groove of the head of the adjusting screw 105. The other end of the spring 104 is in contact with the spring washer 103. The tightness between the wear-resistant moving ring and the wear-resistant stationary ring is adjusted by adjusting the screw, thereby improving the sealing performance between the stirring shaft and the mixing chamber and preventing material leakage due to wear during long-term use of the mixing chamber.

[0026] This utility model discloses a novel sealing mechanism for an internal mixer. By setting sealing devices at the connection points between the two ends of the stirring shaft and the side wall of the mixing chamber, and using a combination of wear-resistant stationary rings and wear-resistant moving rings, the sealing performance between the stirring shaft and the mixing chamber is improved, thereby extending the overall service life of the internal mixer and adapting to the mixing of various rubber and plastic materials at different speeds.

[0027] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A novel sealing mechanism for an internal mixer, comprising a mixing chamber (1), a stirring shaft (2), and a sealing device (10), characterized in that: The mixing chamber (1) includes a mixing tank and side wall plates (11) on both sides of the mixing tank. The two ends of the stirring shaft (2) pass through the side wall plates (11) on both sides of the mixing chamber (1). The sealing device (10) is set at the connection between the two ends of the stirring shaft (2) and the side wall plates (11). The lower part of the mixing chamber (1) is provided with a support (3). The two ends of the stirring shaft (2) are movably connected to the support (3) through bearing seats (4). The middle section of the stirring shaft (2) is provided with stirring blades (20). The sealing device (10) includes, from the inside out: a wear-resistant stationary ring (100), a wear-resistant moving ring (102), a spring washer (103), a spring (104), an adjusting screw (105), and a flange nut (106). The wear-resistant stationary ring (100) is set at both ends of the stirring blade (20) on the stirring shaft (2), and the wear-resistant stationary ring (100) is provided with an oil injection channel (101) that runs through the inner and outer rings. The wear-resistant moving ring (102) is set at both ends of the wear-resistant stationary ring (100) on the stirring shaft (2). The wear-resistant moving ring (102) is a T-shaped ring structure, and one end of the ring is set corresponding to the wear-resistant stationary ring (100). The spring pads (103) are set at both ends of the stirring shaft (2) and are matched with the other end of the wear-resistant moving ring (102). The spring (104) and the adjusting screw (105) are both set between the spring pads (103) and the flange nut (106).

2. The novel internal mixer sealing mechanism according to claim 1, characterized in that: The sealing devices (10) at both ends of the stirring shaft (2) are symmetrically arranged, and the wear-resistant static ring (100) on the sealing device (10) is connected to the side wall plates (11) on both sides of the mixing chamber (1).

3. The novel sealing mechanism for a mixer according to claim 1, characterized in that: The adjusting screws (105) are arranged in a plurality of equidistant arrays on the flange of the flange nut (106).

4. The novel sealing mechanism for a mixer according to claim 1, characterized in that: The head of the adjusting screw (105) is provided with a groove, one end of the spring (104) is provided in the groove of the head of the adjusting screw (105), and the other end of the spring (104) is in contact with the spring pad (103).

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