Wear resistant sealing ring for an internal mixer

Abstract

The utility model discloses a kind of wear-resistant sealing rings for internal mixer, specifically related to internal mixer sealing structure technical field, comprising: static ring main body, annular rubber layer is vulcanized with the side wall of static ring main body, the side of static ring main body towards annular rubber layer is equipped with multiple clamping holes evenly distributed along its circumferential direction, the position of each clamping hole is equipped with rubber column on the side of annular rubber layer towards static ring main body, the rubber column is nested in corresponding clamping hole, exhaust hole is opened on annular rubber layer. The utility model forms the composite combination mode of integrated vulcanization and mechanical embedding structure by synchronously forming in hot vulcanization stage, improve the firmness of annular rubber layer and static ring main body surface combination, compared with traditional glue sticking or compression mode, the combination strength is improved significantly, effectively avoid the phenomenon that annular rubber layer falls off under high temperature, strong shearing effect.

Description

Technical Field

[0001] This utility model relates to the technical field of sealing structure for internal mixers, and specifically to a wear-resistant sealing ring for internal mixers. Background Technology

[0002] As a core component ensuring the airtightness of an internal mixer, the sealing ring is typically installed at the end of the rotor shaft, between the rotating and stationary rings. It prevents rubber material from leaking through the gap between the rotor and the mixing chamber wall under high pressure, high temperature, and high shear conditions. The performance of the sealing ring directly affects the operating efficiency, maintenance costs, and final product quality of the internal mixer.

[0003] Currently, the existing internal mixer sealing structure often adopts a metal-rubber composite sealing structure. However, the rubber layer and the metal substrate are mostly bonded with adhesives, which have poor heat resistance and are easy to peel off. Under high pressure and high frequency vibration, the rubber layer is prone to axial movement or even falling off. Utility Model Content

[0004] The purpose of this invention is to provide a wear-resistant sealing ring for an internal mixer to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant sealing ring for an internal mixer, comprising: The stationary ring body has an integrally vulcanized annular rubber layer on its sidewall. The stationary ring body has multiple evenly distributed circumferential locking holes on the side facing the annular rubber layer. The annular rubber layer has rubber pillars at the positions corresponding to each locking hole on the side facing the stationary ring body. The rubber pillars are nested in the corresponding locking holes. The annular rubber layer has vent holes.

[0006] Furthermore, there are two vent holes, and the centers of the two vent holes are located on the same radial line of the annular rubber layer.

[0007] Furthermore, the exhaust port is a stepped through hole, and the diameter of the exhaust port on the side away from the stationary ring body is larger than the diameter on the side closer to the stationary ring body, so as to facilitate gas discharge and prevent impurities from entering.

[0008] Furthermore, an adhesive layer is applied to the side of the stationary ring body facing the annular rubber layer, and the adhesive layer is a Chemlock layer.

[0009] Furthermore, the annular rubber layer is made of fluororubber or nitrile rubber system, which has high temperature resistance, oil resistance and chemical corrosion resistance.

[0010] Furthermore, the annular rubber layer has a spiral microgroove on the side of the ring away from the main body, which is used to store oil and reduce friction, thereby reducing the coefficient of friction, reducing lubricating oil consumption and improving wear resistance.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. By providing multiple locking holes on the stationary ring body and integrally vulcanizing the annular rubber layer onto the end face of the stationary ring body, while the rubber pillars on the annular rubber layer are nested in the locking holes on the stationary ring body, a composite combination of integral vulcanization and mechanical interlocking is formed, which improves the firmness of the bond between the annular rubber layer and the surface of the stationary ring body. Compared with the traditional adhesive or compression method, the bonding strength is significantly improved, effectively avoiding the phenomenon of the annular rubber layer falling off under high temperature and strong shear. 2. By providing vent holes on the annular rubber layer, the gas generated during the integral vulcanization molding process can be discharged in a timely manner to avoid causing visible scars; 3. By creating spiral microgrooves on the annular rubber layer, a stable lubricating film can be formed, further reducing dry friction power consumption, reducing lubricating oil consumption, and improving wear resistance. 4. This wear-resistant sealing ring is suitable for both internal pressure sealing and external pressure sealing in internal mixers. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the separation of the annular rubber layer and the stationary ring body of this utility model; Figure 3 This is a schematic diagram of the annular rubber layer of this utility model; Figure 4 This is a schematic diagram of the present invention installed on the rotor.

[0014] Explanation of reference numerals in the attached figures: 1. Static ring body; 2. Annular rubber layer; 3. Card hole; 4. Rubber column; 5. Vent hole; 6. Spiral microgroove. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0016] This utility model provides, for example Figures 1 to 4 The wear-resistant sealing ring shown is for use in an internal mixer and includes: The stationary ring body 1 has an integrally vulcanized annular rubber layer 2 on its sidewall. The stationary ring body 1 has multiple evenly distributed locking holes 3 on the side facing the annular rubber layer 2. Rubber pillars 4 are provided on the side facing the stationary ring body 1 corresponding to the positions of each locking hole 3, and the rubber pillars 4 are nested in the corresponding locking holes 3.

[0017] An adhesive layer is applied to the side of the stationary ring body 1 facing the annular rubber layer 2. The adhesive layer is a Chemlock layer.

[0018] The annular rubber layer 2 is made of fluororubber or nitrile rubber system, which has high temperature resistance, oil resistance and chemical corrosion resistance. It should be noted that the annular rubber layer 2 can be made of, but is not limited to, fluororubber or nitrile rubber system composite materials.

[0019] In this invention, multiple locking holes 3 are provided on the stationary ring body 1, and the annular rubber layer 2 is integrally vulcanized on the end face of the stationary ring body 1. At the same time, the rubber pillars 4 on the annular rubber layer 2 are nested in the locking holes 3 on the stationary ring body 1, forming a mechanical interlocking structure simultaneously during the hot vulcanization stage. This creates a composite combination of integral vulcanization and mechanical interlocking, which improves the firmness of the bond between the annular rubber layer 2 and the surface of the stationary ring body 1. Compared with traditional adhesive or compression methods, the bonding strength is significantly improved, effectively preventing the annular rubber layer 2 from falling off under high temperature and strong shear. This wear-resistant sealing ring is suitable for both internal pressure sealing and external pressure sealing of internal mixers.

[0020] like Figure 2 and Figure 3 As shown, an exhaust hole 5 is provided on the annular rubber layer 2.

[0021] There are two vent holes 5, and the centers of the two vent holes 5 are located on the same radial line of the annular rubber layer 2.

[0022] The exhaust port 5 is a stepped through hole. The diameter of the exhaust port 5 on the side away from the stationary ring body 1 is larger than the diameter on the side closer to the stationary ring body 1, so as to facilitate gas discharge and prevent impurities from entering.

[0023] In this invention, the design of the vent hole 5 allows the gas and bubbles generated by the rubber material due to high temperature and high shear to be discharged, thereby avoiding the looseness and unevenness caused by the bubbles to the annular rubber layer 2. After the gas and bubbles are discharged, the rubber material can better fill all the gaps, so that the annular rubber layer 2 can fit more tightly to the surface of the stationary ring body 1, forming a denser structure. This not only improves the sealing effect of the annular rubber layer 2, but also enhances its wear resistance and aging resistance.

[0024] like Figure 2As shown, the annular rubber layer 2 has a spiral microgroove 6 on the side of the ring-shaped body 1 away from the stationary ring body 1, which is used to store oil and reduce friction, thereby reducing the coefficient of friction, reducing lubricating oil consumption and improving wear resistance.

[0025] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A wear-resistant sealing ring for an internal mixer, characterized in that, include: The stationary ring body (1) has an integrally vulcanized annular rubber layer (2) on its sidewall. The stationary ring body (1) has a plurality of evenly distributed circumferential holes (3) on the side facing the annular rubber layer (2). The annular rubber layer (2) has rubber pillars (4) at the positions corresponding to each circumferential hole (3) on the side facing the stationary ring body (1). The rubber pillars (4) are nested in the corresponding circumferential holes (3). The annular rubber layer (2) has vent holes (5).

2. The wear-resistant sealing ring for an internal mixer according to claim 1, characterized in that: There are two exhaust holes (5), and the centers of the two exhaust holes (5) are located on the same radial line of the annular rubber layer (2).

3. The wear-resistant sealing ring for an internal mixer according to claim 1, characterized in that: The exhaust hole (5) is a stepped through hole, and the diameter of the exhaust hole (5) on the side away from the stationary ring body (1) is larger than the diameter on the side closer to the stationary ring body (1).

4. A wear-resistant sealing ring for an internal mixer according to claim 1, characterized in that: The static ring body (1) is coated with an adhesive layer on the side facing the annular rubber layer (2), and the adhesive layer is a Chemlock layer.

5. A wear-resistant sealing ring for an internal mixer according to claim 1, characterized in that: The annular rubber layer (2) is made of fluororubber or nitrile rubber.

6. A wear-resistant sealing ring for an internal mixer according to claim 1, characterized in that: The annular rubber layer (2) has a spiral microgroove (6) on the side face away from the stationary ring body (1).

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