Sealing sleeve for stirring shaft of reaction kettle

Abstract

The utility model relates to the technical field of stirring shaft sealing sleeves, in particular to a reaction kettle stirring shaft sealing sleeve which comprises a shaft sleeve body, a first sealing groove and a second sealing groove are formed in the inner circumferential wall of the shaft sleeve body, and flexible sealing pieces made of different materials are detachably installed in the first sealing groove and the second sealing groove. One end of the second sealing groove penetrates through the shaft sleeve body, a gland is detachably installed on the inner circumferential wall of the second sealing groove, and one end of the gland can make contact with the flexible sealing piece in the second sealing groove. According to the reaction kettle stirring shaft sealing sleeve, through cooperation of the flexible sealing pieces in the first sealing groove and the second sealing groove, double sealing is achieved, the sealing effect is remarkably improved, the two flexible sealing pieces are made of different materials, the reaction kettle stirring shaft sealing sleeve can adapt to different experiment environments on the basis that the cost is reduced, and through the detachable gland, the sealing effect is good. And the flexible sealing piece in the sealing groove can be pressed, and the applicability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of stirring shaft sealing sleeves, specifically a stirring shaft sealing sleeve for a reaction vessel. Background Technology

[0002] Reactors and agitators are important equipment for laboratory pilot tests. When the agitator is working inside the container, gaseous or liquid materials inside the container may leak out of the container through the agitator shaft. Therefore, it is necessary to use an agitator shaft sealing sleeve to seal the agitator shaft to prevent media leakage and protect the bearings and transmission system.

[0003] Existing pilot-scale stirring shaft sealing sleeves have simple structures, generally using felt rings for sealing. Felt rings have poor sealing performance, are prone to leakage, and cannot withstand harsh experimental conditions such as high temperature and high corrosion. On the other hand, commercially available sealing sleeves with complex structures are difficult to manufacture and costly. In view of this, we propose a new stirring shaft sealing sleeve for reactors. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a reaction vessel stirring shaft sealing sleeve, which solves the problems of poor sealing effect of existing stirring shaft sealing sleeves.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A sealing sleeve for a reactor stirring shaft includes a sleeve body. The inner peripheral wall of the sleeve body is provided with a sealing groove 1 and a sealing groove 2. Flexible sealing elements of different materials are detachably installed in the sealing groove 1 and the sealing groove 2. One end of the sealing groove 2 penetrates the sleeve body, and a pressure cap is detachably installed on the inner peripheral wall of the sealing groove 2. One end of the pressure cap can contact the flexible sealing element in the sealing groove 2.

[0007] Furthermore, the inner peripheral wall of the sealing groove two is provided with an internal thread, and the outer peripheral wall of the pressure cap is provided with an external thread that matches the internal thread, and the length of the external thread is greater than the length of the internal thread.

[0008] Furthermore, the flexible sealing element within the sealing groove is a felt ring.

[0009] Furthermore, the flexible seal within the second sealing groove is a PTFE packing.

[0010] Furthermore, the inner peripheral wall of the bushing body is provided with an annular protrusion.

[0011] Furthermore, the outer peripheral wall of the bushing body is provided with mounting threads.

[0012] By employing the above technical solution, this utility model provides a sealing sleeve for the stirring shaft of a reactor. It possesses at least the following beneficial effects:

[0013] (1) The stirring shaft sealing sleeve of the reactor achieves double sealing through the cooperation of the flexible sealing elements in sealing groove one and sealing groove two, which significantly improves the sealing effect. The two flexible sealing elements are made of different materials, which can adapt to different experimental environments while reducing costs. The flexible sealing elements in the sealing groove can be pressed by the detachable pressure cap, which improves the applicability of the device.

[0014] (2) The sealing sleeve of the reactor stirring shaft can adjust the depth of the pressure plate in the sealing groove 2 by the cooperation of the internal and external threads, thereby adjusting the compression degree of the flexible seal. It also makes it convenient for users to select seals of different lengths according to their needs, so as to balance cost investment and sealing effect to the greatest extent. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the bushing body in an embodiment of the present utility model;

[0018] Figure 3 This is a schematic diagram of the felt ring, PTFE packing and gland in an embodiment of this utility model.

[0019] In the figure: 1. Bushing body; 101. Sealing groove one; 102. Sealing groove two; 103. Internal thread; 104. Protrusion; 105. Mounting thread; 2. Felt ring; 3. PTFE packing; 4. Gland; 401. External thread. Detailed Implementation

[0020] 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.

[0021] When the agitator is stirring inside the container, the gas-phase or liquid-phase materials inside the container will leak out of the container through the agitator shaft. The existing sealing sleeves for small-scale trial agitator shafts have a simple structure and generally use felt rings for sealing. Judging from the usage situation, the sealing effect of the felt ring is poor, it is easy to cause leakage, and it cannot adapt to relatively harsh experimental conditions such as high temperature and high corrosiveness. Moreover, the sealing sleeves with complex structures on the market have problems such as large manufacturing difficulty and high cost.

[0022] For this reason, please refer to Figures 1-3 A technical solution provided by the present utility model:

[0023] A sealing sleeve for a reaction kettle agitator shaft, comprising a shaft sleeve body 1, and a shaft hole penetrating through both ends is provided at the axis of the shaft sleeve body 1. An annular convex portion 104 is provided on the inner peripheral wall of the shaft sleeve body 1, and the annular convex portion 104 is used to cooperate with the flange on the agitator shaft to achieve positioning. An installation thread 105 is provided on the outer peripheral wall of the shaft sleeve body 1 for installing the shaft sleeve body 1. Sealing grooves one 101 and two 102 are provided on the inner peripheral wall of the shaft sleeve body 1, and flexible sealing members made of different materials are detachably installed in the sealing grooves one 101 and two 102. Through double sealing, the sealing effect is improved.

[0024] Among them, the inner circumference of the sealing groove one 101 is connected to the shaft hole, and both ends and the outer circumference of the sealing groove one 101 are closed, so that the cross-section of the sealing groove two 102 is in a "匚" shape. The flexible sealing member in the sealing groove one 101 is a felt ring 2, and the felt ring 2 is embedded in the sealing groove one 101. The felt ring 2 has a low cost and is easy to install, and can achieve a good dust-proof sealing effect.

[0025] In this embodiment, the inner shaft of the sealing groove two 102 is connected to the shaft hole, and one end of the sealing groove two 102 far from the sealing groove one 101 penetrates through the shaft sleeve body 1 and is connected to the outside, so that the cross-section of the sealing groove two 102 is in a "7" shape. Further, a gland 4 is provided on the inner peripheral wall of the sealing groove two 102, and one end of the gland 4 can contact the flexible sealing member in the sealing groove two 102 to press the flexible sealing member.

[0026] Specifically, the inner circumferential wall of the sealing groove 102 is provided with an internal thread 103, and the outer circumferential wall of the pressure cap 4 is provided with an external thread 401 that matches the internal thread 103. The engagement of the internal thread 103 and the external thread 401 facilitates the disassembly of the pressure cap 4. The length of the external thread 401 is greater than the length of the internal thread 103, which facilitates adjusting the depth of the pressure cap 4 within the sealing groove 102 and the compression of the flexible seal, causing the flexible seal to expand radially and create a radial sealing force on the stirring shaft. It also allows for the use of flexible seals of different lengths according to application requirements. The flexible seal within the sealing groove 102 is a PTFE packing 3. PTFE packing 3 has strong corrosion resistance, a low coefficient of friction, and can adapt to harsh and complex working conditions, providing excellent sealing performance. When used in conjunction with the felt ring 2, it can significantly improve the sealing effect.

[0027] The stirring shaft sealing sleeve of this reactor achieves double sealing through the cooperation of flexible sealing elements in sealing groove one and sealing groove two, which significantly improves the sealing effect. The two flexible sealing elements are made of different materials, which can adapt to different experimental environments while reducing costs. The flexible sealing elements in the sealing groove can be pressed tightly by the detachable pressure cap, which improves the applicability of the device.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] 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 sealing sleeve for a reactor stirring shaft, comprising a sleeve body (1), characterized in that, The inner peripheral wall of the bushing body (1) is provided with a sealing groove 1 (101) and a sealing groove 2 (102). Flexible sealing elements of different materials are detachably installed in the sealing groove 1 (101) and the sealing groove 2 (102). One end of the sealing groove 2 (102) penetrates the bushing body (1), and a pressure cap (4) is detachably installed on the inner peripheral wall of the sealing groove 2 (102). One end of the pressure cap (4) can contact the flexible sealing element in the sealing groove 2 (102).

2. The reactor stirring shaft sealing sleeve according to claim 1, characterized in that, The inner peripheral wall of the sealing groove (102) is provided with an internal thread (103), and the outer peripheral wall of the pressure cap (4) is provided with an external thread (401) that matches the internal thread (103). The length of the external thread (401) is greater than the length of the internal thread (103).

3. The reactor stirring shaft sealing sleeve according to claim 1, characterized in that, The flexible sealing element in the sealing groove (101) is a felt ring (2).

4. The reactor stirring shaft sealing sleeve according to claim 1, characterized in that, The flexible seal in the sealing groove 2 (102) is a PTFE packing (3).

5. The reactor stirring shaft sealing sleeve according to claim 1, characterized in that, The inner peripheral wall of the bushing body (1) is provided with an annular protrusion (104).

6. The reactor stirring shaft sealing sleeve according to claim 1, characterized in that, The bushing body (1) has an installation thread (105) on its outer peripheral wall.

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