High-temperature-resistant sealing shaft sleeve

Abstract

The utility model provides a high-temperature-resistant sealing shaft sleeve which comprises a first shaft sleeve body and a second shaft sleeve body detachably connected with the first shaft sleeve body, a plurality of first containing grooves are formed in the inner wall of the first shaft sleeve body and the inner wall of the second shaft sleeve body, and second containing grooves are further formed in the inner wall of the first shaft sleeve body and the inner wall of the second shaft sleeve body. The second containing groove is communicated with the first containing groove, a countersunk head screw hole is formed in the first shaft sleeve, and the countersunk head screw hole is communicated with the second containing groove in the first shaft sleeve. Through the arrangement of the first containing groove and the second containing groove, the containing space of lubricating grease is increased through the first containing groove and the second containing groove, a more stable lubricating film can be formed between the shaft and the first shaft sleeve and between the shaft and the second shaft sleeve, and therefore friction and abrasion are reduced; due to the arrangement of the countersunk screw holes, lubricating grease can be supplemented easily and quickly, and a user can inject new lubricating grease into the second containing groove and the first containing groove only through the countersunk screw holes.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sealing shaft sleeve, specifically, relates to a high temperature resistant sealing shaft sleeve. BACKGROUND

[0002] In mechanical equipment, the shaft sleeve as the key transmission component, its performance directly influences the whole system's operation efficiency and stability, the traditional shaft sleeve design often adopts the inner wall plane structure, this kind of structure is simple, but in practical application, the lubrication performance has exposed the problem of not being good, specifically, the contact area between the shaft sleeve inner wall of plane structure and shaft is larger, leads to the accommodation space of lubricating grease to be limited, difficult to form effective lubricating film, thereby shortens the service life of shaft sleeve, in addition, the traditional shaft sleeve is inconvenient in the replenishment of lubricating grease, once the lubricating grease is exhausted, often needs to disassemble and relubricate the whole shaft sleeve, this not only increases the maintenance cost, also influences the continuous operation of equipment. SUMMARY

[0003] The utility model discloses a high temperature resistant sealing shaft sleeve, which can improve the above-mentioned problems.

[0004] In order to achieve the above-mentioned utility model purposes, the utility model provides a high temperature resistant sealing shaft sleeve to improve the above-mentioned problems.

[0005] The application is as follows:

[0006] A high temperature resistant sealing shaft sleeve, comprising a first shaft sleeve and a second shaft sleeve detachably connected with the first shaft sleeve, a plurality of first accommodating grooves are formed in the inner walls of the first shaft sleeve and the second shaft sleeve, and a second accommodating groove is also formed in the inner walls of the first shaft sleeve and the second shaft sleeve, the second accommodating groove and the first accommodating grooves are in communication with each other, a countersunk hole is formed in the first shaft sleeve, and the countersunk hole is in communication with the second accommodating groove of the first shaft sleeve.

[0007] As a preferred technical solution of the application, a sealing bolt is threadedly connected to the inner wall of the countersunk hole, and the sealing bolt is used for plugging the countersunk hole.

[0008] As a preferred technical solution of the application, two connecting pieces are arranged between the first shaft sleeve and the second shaft sleeve, and the connecting pieces are used for connecting the first shaft sleeve and the second shaft sleeve.

[0009] As a preferred technical solution of the application, the connecting piece comprises a threaded hole formed in the first shaft sleeve and a countersunk hole formed in the second shaft sleeve, and a fastening bolt is connected between the countersunk hole and the threaded hole.

[0010] Preferably, the second shaft sleeve is provided with a sealing element between the two ends of the first shaft sleeve.

[0011] Preferably, the sealing element comprises two grooves respectively formed in the ends of the first shaft sleeve and the second shaft sleeve, and a baffle is inserted between the two grooves.

[0012] Preferably, the first shaft sleeve, the second shaft sleeve, the sealing bolt and the fastening bolt are made of austenitic stainless steel.

[0013] Preferably, the first shaft sleeve, the second shaft sleeve, the first accommodating groove and the second accommodating groove are provided with a high-temperature-resistant coating.

[0014] Preferably, the high-temperature-resistant coating is a ceramic coating.

[0015] Preferably, the ceramic coating is a zirconium oxide coating or an aluminum oxide coating.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] In the scheme of the application:

[0018] In order to solve the problem that the containing space of the lubricating grease is limited and the lubricating grease is not easy to supplement in the prior art, the first accommodating groove and the second accommodating groove are arranged, the containing space of the lubricating grease is increased, the shaft and the first shaft sleeve and the second shaft sleeve can form a more stable lubricating film, thereby reducing friction and wear; the setting of the countersunk hole makes the supplement of the lubricating grease simple and fast, and users only need to inject new lubricating grease into the second accommodating groove and the first accommodating groove through the countersunk hole, without disassembling the shaft sleeve, so that the maintenance cost and downtime are greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure schematic view of the high-temperature-resistant sealing shaft sleeve is provided.

[0020] Figure 2 The structure schematic view of the high-temperature-resistant sealing shaft sleeve is provided.

[0021] Figure 3 The explosion view of the high-temperature-resistant sealing shaft sleeve is provided.

[0022] Figure 4 The structure schematic view of the groove of the high-temperature-resistant sealing shaft sleeve is provided.

[0023] Indicated in the figure:

[0024] 1, first shaft sleeve; 101, second shaft sleeve; 102, threaded hole; 103, countersunk hole; 104, fastening bolt; 105, first accommodating groove; 106, second accommodating groove; 2, countersunk hole; 201, sealing bolt; 3, groove; 301, baffle. DETAILED DESCRIPTION

[0025] In order to make the person skilled in the art better understand the technical scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0026] It should be noted that the embodiments and features and technical solutions in the embodiments in the present application can be combined with each other without conflict.

[0027] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] Embodiment, please refer to Figures 1-4 A high-temperature-resistant sealing shaft sleeve, comprising a first shaft sleeve 1 and a second shaft sleeve 101 detachably connected with the first shaft sleeve 1, a plurality of first accommodating grooves 105 are formed in the inner walls of the first shaft sleeve 1 and the second shaft sleeve 101, and a second accommodating groove 106 is also formed in the inner walls of the first shaft sleeve 1 and the second shaft sleeve 101, the second accommodating groove 106 and the first accommodating groove 105 are in communication with each other, a countersunk hole 2 is formed in the first shaft sleeve 1, and the countersunk hole 2 is in communication with the second accommodating groove 106 on the first shaft sleeve 1, the first accommodating groove 105 and the second accommodating groove 106 increase the accommodation space of the lubricating grease, so that a more stable lubricating film can be formed between the shaft and the first shaft sleeve 1 and the second shaft sleeve 101, thereby reducing friction and wear; the setting of the countersunk hole 2 makes the replenishment of the lubricating grease simple and fast, and the user only needs to inject new lubricating grease into the second accommodating groove 106 and the first accommodating groove 105 through the countersunk hole 2, without disassembling the shaft sleeve, thereby greatly reducing the maintenance cost and downtime.

[0029] Further, a sealing bolt 201 is threadedly connected to the inner wall of the countersunk hole 2, the sealing bolt 201 is used for plugging the countersunk hole 2, and the lubricating grease can be injected through the countersunk hole 2 by unscrewing the sealing bolt 201, and the sealing bolt 201 can be screwed after the injection of the lubricating grease is completed, so as to avoid leakage of the lubricating grease from the countersunk hole 2.

[0030] Further, two connecting pieces are arranged between the first shaft sleeve 1 and the second shaft sleeve 101, and the connecting pieces are used to realize the connection between the first shaft sleeve 1 and the second shaft sleeve 101.

[0031] Further, the connecting pieces include a threaded hole 102 arranged on the first shaft sleeve 1 and a countersunk hole 103 arranged on the second shaft sleeve 101, and a fastening bolt 104 is connected between the threaded hole 102 and the countersunk hole 103, so as to realize the connection between the second shaft sleeve 101 and the first shaft sleeve 1, and then the second shaft sleeve 101 and the first shaft sleeve 1 are installed on the shaft.

[0032] Further, the two ends of the second shaft sleeve 101 and the two ends of the first shaft sleeve 1 are both provided with sealing pieces, and the sealing pieces can reduce the leakage of lubricating grease from the connection between the second shaft sleeve 101 and the first shaft sleeve 1.

[0033] Further, the sealing pieces include two grooves 3 arranged at the ends of the first shaft sleeve 1 and the second shaft sleeve 101 respectively, and a baffle 301 is inserted between the two grooves 3, the baffle 301 fills the gap between the first shaft sleeve 1 and the second shaft sleeve 101, reduces the leakage of lubricating grease from the connection between the second shaft sleeve 101 and the first shaft sleeve 1, and the baffle 301 can be made of a ceramic fiber plate.

[0034] Further, the first shaft sleeve 1, the second shaft sleeve 101, the sealing bolt 201 and the fastening bolt 104 are all made of austenitic stainless steel, and specifically made of 1.4835 stainless steel, which has the characteristics of high temperature resistance.

[0035] Further, the first shaft sleeve 1, the second shaft sleeve 101, the first accommodating groove 105 and the second accommodating groove 106 are all provided with a high-temperature-resistant coating.

[0036] Further, the high-temperature-resistant coating is a ceramic coating, which has the advantages of high hardness, wear resistance and high temperature resistance, and the crystal structure of the ceramic material itself makes it have good high temperature resistance and can withstand thermal stress and chemical corrosion in a high temperature environment.

[0037] Further, the ceramic coating is a zirconium oxide coating or an aluminum oxide coating, the aluminum oxide coating can resist high temperatures of 1600-1800℃, and the zirconium oxide coating can resist high temperatures of 2200-2400℃, and by using austenitic stainless steel combined with a ceramic coating, the application has the characteristics of high temperature resistance.

[0038] In use, the second shaft sleeve 101 and the first shaft sleeve 1 are sleeved on the shaft, and the second shaft sleeve 101 and the first shaft sleeve 1 are fixed together through the fastening bolt 104, the countersunk hole 103 and the threaded hole 102, then the countersunk hole 2 is unscrewed and the lubricating grease is injected, the lubricating grease enters between the first containing groove 105 and the second containing groove 106, and after the injection is completed, the sealing bolt 201 is screwed on the countersunk hole 2.

[0039] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation, unless another definite limitation.For ordinary skilled person in the art, the above terms can be understood according to the specific meaning of the utility model.

[0040] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, and are not all the embodiments, and the preferred embodiments of the utility model are given in the drawings, but do not limit the patent range of the utility model.The utility model can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.Upon the foregoing detailed description of the utility model with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing each specific embodiment, or make equivalent replacement to part of technical features.Using the equivalent structure of the utility model specification and drawings, direct or indirect application in other related technical fields, are also within the patent protection range of the utility model.

Claims

1. A high-temperature resistant sealing bushing, characterized in that, The device includes a first bushing (1) and a second bushing (101) detachably connected to the first bushing (1). The inner walls of the first bushing (1) and the second bushing (101) are provided with a plurality of first receiving grooves (105). The inner walls of the first bushing (1) and the second bushing (101) are also provided with second receiving grooves (106). The second receiving grooves (106) and the first receiving grooves (105) are interconnected. The first bushing (1) is provided with a countersunk screw hole (2), and the countersunk screw hole (2) is connected to the second receiving groove (106) on the first bushing (1).

2. The high-temperature resistant sealing bushing according to claim 1, characterized in that, A sealing bolt (201) is threaded onto the inner wall of the countersunk screw hole (2), and the sealing bolt (201) is used to seal the countersunk screw hole (2).

3. The high-temperature resistant sealing bushing according to claim 1, characterized in that, Two connectors are provided between the first bushing (1) and the second bushing (101), and the connectors are used to connect the first bushing (1) and the second bushing (101).

4. The high-temperature resistant sealing bushing according to claim 3, characterized in that, The connector includes a threaded hole (102) on the first bushing (1) and a countersunk hole (103) on the second bushing (101), and a fastening bolt (104) is connected between the countersunk hole (103) and the threaded hole (102).

5. A high-temperature resistant sealing bushing according to claim 4, characterized in that, Seals are provided between both ends of the second bushing (101) and both ends of the first bushing (1).

6. A high-temperature resistant sealing bushing according to claim 5, characterized in that, The seal includes two grooves (3) respectively opened at the ends of the first bushing (1) and the second bushing (101), and a baffle (301) is inserted between the two grooves (3).

7. A high-temperature resistant sealing bushing according to claim 6, characterized in that, The first bushing (1), the second bushing (101), the sealing bolt (201), and the fastening bolt (104) are all made of austenitic stainless steel.

8. A high-temperature resistant sealing bushing according to claim 1, characterized in that, The first bushing (1), the second bushing (101), the first receiving groove (105) and the second receiving groove (106) are all provided with a high temperature resistant coating.

9. A high-temperature resistant sealing bushing according to claim 8, characterized in that, The high-temperature resistant coating is a ceramic coating.

10. A high-temperature resistant sealing bushing according to claim 9, characterized in that, The ceramic coating is a zirconium oxide coating or an alumina coating.

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