A water guide bearing bush positioning structure for a pump

Abstract

The application discloses a pump water guide bearing shaft sleeve positioning structure, which comprises a pump shaft body, a guide vane body is installed at one end of the pump shaft body, a impeller body is installed at one end of the guide vane body, a positioning assembly for connection is arranged on the inner side of the impeller body, the positioning assembly comprises a bearing body and a mortise and tenon joint installed harf ring, a check ring and a sleeve piece, and the harf ring, the check ring and the sleeve piece are all installed on the pump shaft body; the original hot assembly interference fit is changed into the mortise and tenon joint structure, the wear of the shaft is reduced on the basis of removing the heating link, the difficulty of replacing the shaft is reduced, the detachability is high, transportation is facilitated, the positioning stability of the shaft and the bearing is ensured, the problems of product scratch, difficult installation and disassembly and the like occurring in the traditional interference fit installation process are solved by the mortise and tenon joint structure, time-consuming problems such as replacement after long-time use are avoided, and the small key and the impeller key are adopted, so that installation is facilitated, operation is simple, and the advantages of wide application range are achieved.

Description

Technical Field

[0001] This invention belongs to the field of water guide bearing technology for pumps, and specifically relates to a positioning structure for a water guide bearing bushing of a pump. Background Technology

[0002] Pump bearings are components that support the pump rotor shaft. They are mainly used to reduce the friction of the pump rotor and its impeller, reduce frictional noise during pump operation, and reduce shaft vibration. At the same time, bearings can also withstand axial and radial loads and torques. They are an important part of the entire pump system. Pump bearings play a role in supporting the rotating shaft and reducing friction in the pump system. They come in various types, including two main categories: sliding bearings and rolling bearings. Among the rolling bearings, deep groove ball bearings and tapered roller bearings are commonly used in the pump industry. Water pumps with motor bearings are widely used in production and daily life, and have various classifications and applications.

[0003] Patent application number 201910521705.0 discloses an axially non-destructive rolling bearing mounting structure. This invention can replace the conventional rolling bearing and rotor assembly structure, solving the technical problem that the outer shaft extension of a pump with a mechanical seal cannot be equipped with a rolling bearing for axial positioning and balancing its own thrust. It allows the pump shaft to be connected to the drive shaft using a flexible coupling, greatly improving the shaft system's operating condition. In conjunction with the above application and compared with existing structures, the existing technology uses an interference fit between the shaft and the bushing, which requires a heat-fitting assembly. The heat-fitting assembly requires preheating of the bushing to ensure assembly. Interference fits require high machining precision, making assembly difficult. The tight fit between the bushing and the shaft leads to difficulties in replacement and maintenance. Under high temperature or high speed conditions, thermal stress is easily generated, leading to fit failure and affecting the practicality of the pump. Therefore, we propose a water-guided bearing bushing positioning structure for pumps. Summary of the Invention

[0004] The purpose of this invention is to provide a pump water guide bearing bushing positioning structure to solve the problems mentioned in the background art. In the prior art, the pump body uses an interference fit between the shaft and the bushing, which requires a heat fitting. The heat fitting requires preheating of the bushing to ensure assembly. The interference fit requires high machining accuracy, making assembly difficult. The tight fit between the bushing and the shaft leads to difficulty in replacement and maintenance. Under high temperature or high speed conditions, thermal stress is easily generated, leading to fit failure, thus affecting the practicality of the pump.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pump water guide bearing bushing positioning structure, comprising a pump shaft body, a guide vane body installed at one end of the pump shaft body, an impeller body installed at one end of the guide vane body, and a positioning assembly for connection provided on the inner side of the impeller body. The positioning assembly includes a bearing body and a Haver ring, a retaining ring, and a sleeve installed by tenon and mortise joints. The Haver ring, the retaining ring, and the sleeve are all installed on the pump shaft body, and the bearing body is installed on the inner side of the guide vane body. The pump shaft body and the guide vane body are connected by the bearing body, the Haver ring, the retaining ring, and the sleeve.

[0006] Preferably, the pump shaft body is provided with a shoulder, the Haver ring is installed in the shoulder, the retaining ring is disposed at one end of the Haver ring, and the sleeve is installed at one end of the retaining ring.

[0007] Preferably, a keyway is provided on one end of the sleeve on the pump shaft body, and a corresponding keyway is provided on the inner side of one end of the sleeve. A small key is installed in the keyway, and an impeller key is provided on the other end of the small key. The impeller body is installed on the pump shaft body through the impeller key. The Haval ring, retaining ring and sleeve are positioned and installed through the small key and the impeller key.

[0008] Preferably, the bearing body includes a bearing shell and a bushing, with the bushing fixed on the guide vane body and the bearing shell in contact with the retaining ring.

[0009] Preferably, the Haval ring is provided with an integrated assembly step, and one end of the retaining ring is engaged with the Haval ring through the assembly step.

[0010] Preferably, the Haval ring is composed of two semi-circular rings, which facilitates the assembly of the shaft. The end of the Haval ring away from the assembly step has a certain slope, and the other end of the retaining ring has a corresponding slope. The tilt angle of the Haval ring is oriented towards the motor direction.

[0011] Preferably, a second sealing ring seat is installed on the inner side of the guide vane body at the other end of the positioning assembly. A rubber contact wear-resistant sheet is installed on one side of the second sealing ring seat. A limit spring is provided on the inner side of the second sealing ring seat. The rubber contact wear-resistant sheet is limited within the second sealing ring seat by a T-shaped limit block, and the inner side of the rubber contact wear-resistant sheet contacts and adheres to the surface of the pump shaft body.

[0012] Preferably, a sealing contact seat is installed on the inner side of the guide vane body at one end of the positioning assembly, a sealing contact ring is installed on the inner side of the sealing contact seat, a push-tightening spring is installed on one side of the sealing contact ring, the sealing contact ring is installed in the sealing contact seat through the push-tightening spring, and push-tightening contact grooves are provided at both ends of the inner side of the sealing contact seat, and sealing contact sliders are provided at both ends of the sealing contact ring. The sealing contact ring and the sealing contact seat are also slidably installed with the sealing contact sliders through the push-tightening contact grooves.

[0013] Preferably, a sealing contact groove is provided on the other side of the sealing contact ring, and a sealing wear-resistant ring is installed in the sealing contact groove. A first sealing ring seat is provided on the impeller body, and a sealing protrusion is provided on the first sealing ring seat. The first sealing ring seat contacts the sealing contact groove on the sealing contact ring through the sealing protrusion.

[0014] Preferably, the two ends of the positioning component are separated from the sealing protrusion by the rubber contact wear-resistant sheet, thereby sealing the installed positioning component.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) This application changes the original hot-fit interference fit to a tenon and mortise structure, which reduces the wear on the shaft by eliminating the heating process, reduces the difficulty of shaft replacement, is highly detachable, and is easy to transport. While ensuring the stable positioning of the shaft and bearing, the tenon and mortise structure solves the problems of product scratches and difficult installation and disassembly that occur during the traditional interference fit installation process, and avoids the problems of time-consuming replacement after long-term use and wear. At the same time, the small key and impeller key used are easy to install, simple to operate, and have a wide range of applications.

[0017] (2) In addition, during the operation of this pump body, when the impeller is rotating, if the fluid enters the inside of the guide vane body and comes into contact with the Hasher ring, retaining ring and sleeve components used for positioning the bushing, and if the fluid contains impurities, the rotating components may rub against the impurities when they come into contact with the components, thereby accelerating the wear of the components and affecting their service life. By setting the sealing structure at both ends of the inside of the guide vane body, the Hasher ring, retaining ring and sleeve components can be separated, preventing the fluid from coming into contact with them during use, avoiding unnecessary wear, improving the use, reducing the replacement frequency of structural components, reducing the cost of use, and improving the service life of the structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the pump shaft body of the present invention;

[0020] Figure 3 For the present invention Figure 1 Schematic diagram of the structure at point B;

[0021] Figure 4 For the present invention Figure 1 Schematic diagram of the structure at point A;

[0022] Figure 5 This is a schematic diagram of the structure of the Haver ring of the present invention;

[0023] Figure 6 This is a schematic diagram of the retaining ring of the present invention;

[0024] Figure 7 This is a schematic diagram of the sleeve component of the present invention;

[0025] In the diagram: 100, Pump shaft body; 101, Guide vane body; 102, Impeller body; 200, Bearing body; 201, Haval ring; 211, Assembly step; 202, Retaining ring; 203, Sleeve; 204, Small key; 205, Key assembly groove; 206, Impeller key; 207, Shaft shoulder; 300, First sealing ring seat; 301, Sealing protrusion; 302, Sealing contact seat; 303, Sealing contact ring; 304, Push spring; 305, Push contact groove; 306, Sealing contact slider; 307, Sealing contact groove; 308, Sealing wear-resistant ring; 400, Second sealing ring seat; 401, Limiting spring; 402, Rubber contact wear-resistant sheet; 403, T-shaped limiting block. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] Please see Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7This invention provides a technical solution: a pump bearing supports the rotating shaft, allowing it to rotate freely within the pump casing, thus achieving the pumping function. It also reduces friction, minimizing direct contact between the shaft and the casing, significantly reducing friction loss and improving efficiency. Pumps with motor-driven bearings are widely used in production and daily life, with various classifications and applications. A pump water guide bearing bushing positioning structure includes a pump shaft body 100, with a guide vane 101 mounted at one end. The guide vane 101 has a conical outer shell, and an impeller is mounted at one end of the guide vane 101. The impeller body 102 has a positioning assembly for connection on its inner side. The positioning assembly includes a bearing body 200 and a Haver ring 201, a retaining ring 202, and a sleeve 203 installed by tenon and mortise joints. The bearing body 200 is adapted to reduce friction. The Haver ring 201, the retaining ring 202, and the sleeve 203 are all installed on the pump shaft body 100, and the bearing body 200 is installed on the inner side of the guide vane body 101. The pump shaft body 100 and the guide vane body 101 are connected by the bearing body 200 and the Haver ring 201, the retaining ring 202, and the sleeve 203. When this assembly is installed on an existing pump bearing... When locating the bearing bushing, first, the pump shaft body 100 passes through the guide vane body 101. The bearing body 200, a wear-resistant water guide bearing, is pre-installed on the guide vane body 101. Next, the pump bushing assembly is installed onto the pump shaft. This assembly uses a tenon and mortise structure and consists of a Haver ring 201, a retaining ring 202, a sleeve 203, a small key 204, and a key assembly groove 205. During installation, first, two semi-circular Haver rings 201 are placed at the shaft shoulder 207 on the pump shaft body 100, and then the retaining ring 202 is installed. The retaining ring 202 and the protruding assembly step 211 on the Haver ring 201 are aligned. The sleeve 203 is installed last, and then the impeller key 206 is pushed into the key assembly groove 205 on the corresponding position of the sleeve 203 and the pump shaft body 100. The impeller key 206 is then quickly installed. The pump shaft sleeve assembly is positioned by the small key 204 and the impeller key 206. At the same time, the Haver ring 201 is inclined near the guide vane body 101, which facilitates the guide vane body 101 to be guided into the bearing hole during installation. Once the installation is completed, it can be put into operation. This assembly method is simple and convenient, avoiding the time-consuming replacement problem after wear and tear from long-term use, thereby improving the practicality and convenience of the device, and can be widely promoted and used.

[0029] Specifically, the pump shaft body 100 is provided with an integral shoulder 207, a Haver ring 201 is positioned and installed in the shoulder 207, a retaining ring 202 is located at one end of the Haver ring 201, and a sleeve 203 is installed at one end of the retaining ring 202. A keyway 205 is provided on one end of the sleeve 203 on the pump shaft body 100, and a corresponding keyway 205 is provided on the inner side of one end of the sleeve 203. A small key 204 is installed in the keyway 205, and the other end of the small key 204 is provided with... There is an impeller key 206, and the impeller body 102 is mounted on the pump shaft body 100 via the impeller key 206. The Haval ring 201, the retaining ring 202, and the sleeve 203 are positioned and installed via the small key 204 and the impeller key 206. The bearing body 200 includes a bearing shell and a bushing. The bearing shell is generally made of wear-resistant rubber, wear-resistant plastic, wear-resistant ceramic, etc., and the bushing is generally made of stainless steel, alloy steel, cast iron, etc. The bushing is fixed on the guide vane body 101, and the bearing shell is in contact with the retaining ring 202.

[0030] Specifically, the Haval ring 201 is provided with an integrated assembly step 211. One end of the retaining ring 202 is engaged with the Haval ring 201 through the assembly step 211, ensuring stable installation while avoiding gaps at the installation point. The Haval ring 201 is composed of two semi-circular rings, which facilitates shaft assembly. The end of the Haval ring 201 away from the assembly step 211 has a certain slope, and the other end of the retaining ring 202 has a corresponding slope. The tilt angle of the Haval ring 201 faces the direction of the motor, which facilitates assembly.

[0031] Example 2

[0032] Please see Figure 1 , Figure 3 and Figure 4This invention provides a technical solution: a pump water guide bearing bushing positioning structure. An integrated second sealing ring seat 400 is installed on the inner side of the guide vane body 101 at the other end of the positioning assembly. A rubber contact wear-resistant plate 402 is installed on one side of the second sealing ring seat 400. A limit spring 401 is provided on the inner side of the second sealing ring seat 400. The rubber contact wear-resistant plate 402 is limited within the second sealing ring seat 400 by a T-shaped limit block 403, and the inner side of the rubber contact wear-resistant plate 402 contacts and adheres to the surface of the pump shaft body 100. Furthermore, during installation and use, when the pump shaft body 100 is inserted into the bearing hole inside the guide vane body 101, and after the impeller body 102 is installed... Subsequently, two sets of sealing protrusions 301 and rubber contact wear-resistant plates 402 are respectively provided on both ends of the inner side of the guide vane body 101 and on both sides of the positioning component. During the installation of the pump shaft body 100, the rubber contact wear-resistant plate 402 provided on the second sealing ring seat 400 at one end of the guide vane body 101 contacts the pump shaft body 100 during the installation process. After installation and fixing, the rubber contact wear-resistant plate 402 is limited and installed in the second sealing ring seat 400 by the T-shaped limiting block 403 and the limiting spring 401. The rubber contact wear-resistant plate 402 is in close contact with the pump shaft body 100, thereby sealing one side of the installed positioning component through the rubber contact wear-resistant plate 402.

[0033] Specifically, an integrated sealing contact seat 302 is installed on the inner side of the guide vane body 101 at one end of the positioning assembly. A sealing contact ring 303 is installed on the inner side of the sealing contact seat 302. A push-pressing spring 304 is fixedly installed on one side of the sealing contact ring 303. The sealing contact ring 303 is installed in the sealing contact seat 302 through the push-pressing spring 304. Push-pressing contact grooves 305 are opened at both ends of the inner side of the sealing contact seat 302. An integrated sealing contact slider 306 is provided at both ends of the sealing contact ring 303. The sealing contact ring 303 and the sealing contact seat 302 are also connected by a... The push-tightening contact groove 305 and the sealing contact slider 306 are slidably installed to ensure the stable movement of the sealing contact ring 303. At the same time, the sliding push-tightening contact groove 305 and the sealing contact slider 306 slide in a sealed manner. A sealing contact groove 307 is provided on the other side of the sealing contact ring 303, and a sealing wear-resistant ring 308 is installed in the sealing contact groove 307. A first sealing ring seat 300 is provided on the impeller body 102, and a sealing protrusion 301 is provided on the first sealing ring seat 300. The first sealing ring seat 300 contacts the sealing contact groove 303 through the sealing protrusion 301. The other end of the guide vane 101 installed in the groove 307 contacts the first sealing ring seat 300 provided on the impeller body 102 through the sealing contact seat 302. When in contact, the sealing protrusion 301 on the first sealing ring seat 300 protrudes and contacts the sealing contact ring 303 inside the sealing contact seat 302. During contact, the protruding sealing protrusion 301 contacts and squeezes the sealing contact ring 303 installed inside the sealing contact seat 302. The sealing contact ring 303 is provided with a sealing contact groove 307 corresponding to the sealing protrusion 301, and a sealing resistance is also provided in the sealing contact groove 307. When the grinding ring 308 contacts, the sealing contact ring 303 slides within the pushing contact groove 305 via the sealing contact slider 306, simultaneously compressing the pushing spring 304. The pushing spring 304 deforms, generating a push force, thereby ensuring that the sealing protrusion 301 and the sealing contact groove 307 are tightly fitted, guaranteeing a seal on the other end of the inner side of the guide vane body 101. Through the sealing effect at both ends, the positioning component can be sealed and separated, preventing impurities in the fluid from repeatedly contacting the positioning component during pump shaft operation, thus avoiding wear and tear on the positioning component and allowing for better use of the pump shaft, thereby improving the practicality of the structure.

[0034] Specifically, the two ends of the positioning component are separated from the sealing protrusion 301 by the rubber contact wear-resistant sheet 402, thereby sealing the installed positioning component and preventing damage to the positioning component from external factors during operation, thus improving the safety of the structure.

[0035] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pump water guide bearing bushing positioning structure, comprising a pump shaft body (100), wherein a guide vane body (101) is mounted at one end of the pump shaft body (100), and an impeller body (102) is mounted at one end of the guide vane body (101), characterized in that: The impeller body (102) has a positioning assembly for connection on its inner side. The positioning assembly includes a bearing body (200) and a Haver ring (201), a retaining ring (202) and a sleeve (203) installed by tenon and mortise. The Haver ring (201), the retaining ring (202) and the sleeve (203) are all installed on the pump shaft body (100), and the bearing body (200) is installed on the inner side of the guide vane body (101). The pump shaft body (100) and the guide vane body (101) are connected by the bearing body (200) and the Haver ring (201), the retaining ring (202) and the sleeve (203). The pump shaft body (100) is provided with a shoulder (207), the Haver ring (201) is installed in the shoulder (207), the retaining ring (202) is provided at one end of the Haver ring (201), and the sleeve (203) is installed at one end of the retaining ring (202); A key assembly groove (205) is provided at one end of the sleeve (203) on the pump shaft body (100). A corresponding key assembly groove (205) is provided on the inner side of one end of the sleeve (203). A small key (204) is installed in the key assembly groove (205). An impeller key (206) is provided at the other end of the small key (204). The impeller body (102) is installed on the pump shaft body (100) through the impeller key (206). The Haval ring (201), the retaining ring (202) and the sleeve (203) are positioned and installed through the small key (204) and the impeller key (206). The bearing body (200) includes a bearing shell and a bushing, the bushing being fixed on the guide vane body (101), while the bearing shell is in contact with the retaining ring (202); The Haval ring (201) is provided with an integrated assembly step (211), and one end of the retaining ring (202) is engaged with the Haval ring (201) through the assembly step (211).

2. The pump water guide bearing bushing positioning structure according to claim 1, characterized in that: The Haval ring (201) consists of two semi-circular rings, which facilitates the assembly of the shaft. The end of the Haval ring (201) away from the assembly step (211) has a certain slope, and the other end of the retaining ring (202) has a corresponding slope. The tilt angle of the Haval ring (201) is oriented towards the motor direction.

3. The pump water guide bearing bushing positioning structure according to claim 1, characterized in that: The inner side of the guide vane body (101) is equipped with a second sealing ring seat (400) at the other end of the positioning assembly. A rubber contact wear-resistant plate (402) is installed on one side of the second sealing ring seat (400). A limit spring (401) is provided on the inner side of the second sealing ring seat (400). The rubber contact wear-resistant plate (402) is limited in the second sealing ring seat (400) by a T-shaped limit block (403), and the inner side of the rubber contact wear-resistant plate (402) contacts and adheres to the surface of the pump shaft body (100).

4. The pump water guide bearing bushing positioning structure according to claim 3, characterized in that: A sealing contact seat (302) is installed on the inner side of the guide vane body (101) at one end of the positioning assembly. A sealing contact ring (303) is installed on the inner side of the sealing contact seat (302). A push-tightening spring (304) is installed on one side of the sealing contact ring (303). The sealing contact ring (303) is installed in the sealing contact seat (302) by the push-tightening spring (304). Push-tightening contact grooves (305) are provided at both ends of the inner side of the sealing contact seat (302). Sealing contact sliders (306) are provided at both ends of the sealing contact ring (303). The sealing contact ring (303) and the sealing contact seat (302) are also slidably installed by the push-tightening contact grooves (305) and the sealing contact sliders (306).

5. The pump water guide bearing bushing positioning structure according to claim 4, characterized in that: A sealing contact groove (307) is provided on the other side of the sealing contact ring (303), and a sealing wear-resistant ring (308) is installed in the sealing contact groove (307). A first sealing ring seat (300) is provided on the impeller body (102), and a sealing protrusion (301) is provided on the first sealing ring seat (300). The first sealing ring seat (300) contacts the sealing contact groove (307) opened on the sealing contact ring (303) through the sealing protrusion (301).

6. The pump water guide bearing bushing positioning structure according to claim 5, characterized in that: The two ends of the positioning component are separated from the sealing protrusion (301) by the rubber contact wear-resistant sheet (402) to seal the installed positioning component.

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