Booster pump mechanical seal added shaft sleeve

Abstract

The utility model discloses a shaft sleeve for adding a mechanical seal of a booster pump, which belongs to the technical field of booster pumps and is technically characterized by comprising a shaft seat component, a sleeving component and a fixing component. When the mechanical seal is sleeved, in order to prevent the mechanical seal from being damaged in the sleeving period, the sleeving assembly can be installed on the shaft seat assembly firstly, and the fixing assembly is arranged on the sleeving assembly, so that the sleeving assembly can be stably arranged on the shaft seat assembly, and the sleeving assembly is prevented from falling off in the subsequent use period; at the moment, through the sleeving assembly, the machine sleeve can be arranged on the shaft seat assembly in a sleeving mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of booster pumps, and particularly relates to adding a shaft sleeve to the mechanical seal of a booster pump. Background Technique

[0002] When replacing the mechanical seal of the currently used booster pump, during the installation on the pump shaft, there is a step at the front end of the mechanical seal position. During the installation of the mechanical seal, when passing through the step, the internal sealing ring of the mechanical seal will be extruded and damaged, resulting in leakage of the mechanical seal, increasing the operation risk and cost of the pump.

[0003] In the prior art, there is no good method to solve the above problems. It can only be judged whether it is damaged through the familiarity of the installer. If it cannot be judged, the mechanical seal needs to be removed and reinstalled for confirmation. After ensuring no problems, it can be installed. The above operations will result in a large amount of time and manpower loss; if it is damaged, the sealing ring needs to be replaced, increasing the cost. Therefore, we propose adding a shaft sleeve to the mechanical seal of the booster pump to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a shaft sleeve added to the mechanical seal of a booster pump to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A shaft sleeve is added to the mechanical seal of a booster pump, including a shaft seat assembly, a sleeve assembly is installed on the shaft seat assembly, and a fixing assembly is installed on the sleeve assembly;

[0007] Among them, the sleeve assembly includes a sleeve part A and a sleeve part B. The inner diameters at the front and rear ends of the sleeve part A are the same. The outer diameter at the rear end of the sleeve part A is larger than the outer diameter at the front section, and a slope structure is provided on the surface of the sleeve part A. The sleeve part B has the same shape and size as the sleeve part A;

[0008] The fixing assembly includes a rack and a gear. Installation grooves are provided on the surfaces of the sleeve part A and the sleeve part B. The rack is slidably installed in the installation groove, the gear is arranged in the installation groove, and the rack and the gear are meshed.

[0009] Preferably, the shaft seat assembly includes a booster pump shaft, a base, and a connecting piece. The base is installed on the booster pump shaft. There are two connecting pieces, and both connecting pieces are installed on the base.

[0010] Preferably, a threaded part and a stepped part are provided on the surface of the booster pump shaft.

[0011] Preferably, the outer diameter of the rear ends of the A sleeve member and the B sleeve member is the same as the diameter of the stepped portion, and the outer diameter of the front segments of the A sleeve member and the B sleeve member is slightly larger than the diameter of the booster pump shaft.

[0012] Preferably, the sleeve assembly further includes an A fixing member, a ratchet tooth, an A rotating member, a B rotating member and a connecting rod. Fixing grooves are formed inside both the A sleeve member and the B sleeve member. The A fixing member and the B fixing member are respectively installed in the two fixing grooves. The A rotating member and the B rotating member are both arranged between the A fixing member and the B fixing member. The A fixing member is connected to the A rotating member, the B fixing member is connected to the B rotating member, and the connecting rod connects the A rotating member and the B rotating member.

[0013] Preferably, the fixing assembly further includes a ratchet wheel and a ratchet tooth. The ratchet wheel is rotatably installed in the installation groove, the ratchet tooth is installed in the installation groove, and the ratchet wheel and the ratchet tooth are engaged.

[0014] Preferably, the gear is fixedly installed on the ratchet wheel.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. Through the sleeve assembly, when sleeving the mechanical seal, the mechanical seal can move along the sleeve assembly. And since the diameter of the sleeve assembly gradually increases, it can ensure that the mechanical seal can be successfully sleeved on the shaft seat assembly during sleeving, and the mechanical seal will not be damaged during this period.

[0017] 2. Through the fixing assembly, the sleeve assembly can be disassembled, so that the sleeve assembly can be installed on the shaft seat assembly before sleeving the mechanical seal and will not fall off during sleeving, and the sleeve assembly can be disassembled after sleeving. Description of the Drawings

[0018] Figure 1 is the first three-dimensional structure diagram of the present utility model;

[0019] Figure 2 is the second three-dimensional structure diagram of the present utility model;

[0020] Figure 3 is the first partial three-dimensional diagram of the present utility model;

[0021] Figure 4 is the second partial three-dimensional diagram of the present utility model;

[0022] Figure 5 is the first partial exploded view of the present utility model;

[0023] Figure 6 is the second partial exploded view of the present utility model.

[0024] In the figure: 1. Shaft seat assembly; 11. Booster pump shaft; 12. Base; 13. Connecting piece; 14. Threaded part; 15. Step part; 2. Sleeve assembly; 21. Sleeve part A; 22. Sleeve part B; 23. Fixing part A; 24. Fixing part B; 25. Rotating part A; 26. Rotating part B; 27. Connecting rod; 3. Fixing assembly; 31. Rack; 32. Gear; 33. Ratchet; 34. Ratchet teeth. Detailed implementation mode

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Please refer to Figures 1-6 , the present invention provides a shaft sleeve added to the mechanical seal of a booster pump, including a shaft seat assembly 1, a sleeve assembly 2 is installed on the shaft seat assembly 1, and a fixing assembly 3 is installed on the sleeve assembly 2;

[0027] Among them, the sleeve assembly 2 includes a sleeve part A 21 and a sleeve part B 22. The inner diameters of the front and rear ends of the sleeve part A 21 are the same. The outer diameter of the rear end of the sleeve part A 21 is larger than the outer diameter of the front section, and a slope structure is provided on the surface of the sleeve part A 21. The sleeve part B 22 has the same shape and size as the sleeve part A 21;

[0028] The fixing assembly 3 includes a rack 31 and a gear 32. Installation grooves are opened on the surfaces of the sleeve part A 21 and the sleeve part B 22. The rack 31 is slidably installed in the installation groove, the gear 32 is arranged in the installation groove, and the rack 31 and the gear 32 are meshed.

[0029] Specifically, when the mechanical seal is sleeved, in order to avoid damage to the mechanical seal during sleeving, a sleeve assembly 2 can be set on the shaft seat assembly 1, and the sleeve part A 21 and the sleeve part B 22 have the same structure, both of which have a smaller diameter at the front section and a larger diameter at the rear section. Through the sleeve assembly 2, the mechanical seal can be sleeved more completely to avoid damage to the mechanical seal during this period. During use, in order to avoid the sleeve assembly 2 falling off during the sleeving of the mechanical seal, installation grooves can be opened on the sleeve part A 21 and the sleeve part B 22, and the rack 31 is slidably arranged in the installation groove, and the gear 32 is rotatably arranged. Through the meshing and clamping of the gear 32 on the rack 31, the sleeve part A 21 and the sleeve part B 22 can be stably connected.

[0030] In this embodiment, the shaft seat assembly 1 includes a booster pump shaft 11, a base 12, and a connecting member 13. The base 12 is installed on the booster pump shaft 11. There are two connecting members 13, and both of the two connecting members 13 are installed on the base 12.

[0031] Specifically, during actual use, in order to enable the booster pump shaft 11 to be stably arranged, a base 12 is provided at its rear end, and a connecting member 13 is provided on the base 12. During use, it can be connected to the connecting member 13 through an external bolt group, so that the booster pump shaft 11 can be stably arranged.

[0032] In this embodiment, a threaded portion 14 and a stepped portion 15 are provided on the surface of the booster pump shaft 11; the outer diameters of the rear ends of the A sleeve member 21 and the B sleeve member 22 are the same as the diameter of the stepped portion 15, and the outer diameters of the front segments of the A sleeve member 21 and the B sleeve member 22 are slightly larger than the diameter of the booster pump shaft 11.

[0033] Specifically, during use, in order to facilitate subsequent use, a threaded portion 14 and a stepped portion 15 are provided on the surface of the booster pump shaft 11. And in order to enable the mechanical seal to be sleeved onto the stepped portion 15, the diameters of the rear ends of the A sleeve member 21 and the B sleeve member 22 are set to be the same as the diameter of the stepped portion 15, while the diameter of the front segment is slightly larger than the diameter of the booster pump shaft 11.

[0034] In this embodiment, the sleeving assembly 2 further includes an A fixing member 23, a ratchet tooth 34, an A rotating member 25, a B rotating member 26, and a connecting rod 27. Fixing grooves are respectively formed inside the A sleeve member 21 and the B sleeve member 22. The A fixing member 23 and the B fixing member 24 are respectively installed in the two fixing grooves. Both the A rotating member 25 and the B rotating member 26 are arranged between the A fixing member 23 and the B fixing member 24. The A fixing member 23 is connected to the A rotating member 25, the B fixing member 24 is connected to the B rotating member 26, and the connecting rod 27 connects the A rotating member 25 and the B rotating member 26.

[0035] Specifically, during actual use, in order to enable relative rotation between the A sleeve member 21 and the B sleeve member 22, so as to facilitate their disassembly and installation, the A fixing member 23 is connected to the A rotating member 25, the B fixing member 24 is connected to the B rotating member 26, and the A rotating member 25 and the B rotating member 26 are connected by the connecting rod 27, so that the A sleeve member 21 and the B sleeve member 22 can be stably connected and can rotate relative to each other.

[0036] In this embodiment, the fixing assembly 3 further includes a ratchet wheel 33 and a ratchet tooth 34. The ratchet wheel 33 is rotatably installed in the installation groove, the ratchet tooth 34 is installed in the installation groove, and the ratchet wheel 33 and the ratchet tooth 34 are engaged; the gear 32 is fixedly installed on the ratchet wheel 33.

[0037] Specifically, during actual use, to prevent the gear 32 from rotating in the reverse direction, which may cause the rack 31 and the gear 32 to fail to mesh, and further prevent the stable connection between the A sleeve member 21 and the B sleeve member 22, a ratchet wheel 33 and a ratchet tooth 34 can be provided in the installation groove. The gear 32 is installed on the ratchet wheel 33, and the ratchet tooth 34 can latch onto the ratchet wheel 33, thereby preventing the gear 32 from rotating in the reverse direction.

[0038] The working principle and usage process of the present utility model: When sleeving the mechanical seal, to prevent the mechanical seal from being damaged during sleeving, the sleeving assembly 2 can be first installed on the shaft seat assembly 1, and by providing a fixing assembly 3 on the sleeving assembly 2, the sleeving assembly 2 can be stably set on the shaft seat assembly 1, preventing the sleeving assembly 2 from falling off during subsequent use. At this time, through the sleeving assembly 2, the mechanical seal can be sleeved on the shaft seat assembly 1.

[0039] The electronic components and modules used in the content of this utility model can all be parts commonly used in the current market that can achieve the specific functions in this case, and the specific models and sizes can be selected and adjusted according to actual needs.

[0040] The above shows and describes the basic principles, main features, and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. The mechanical seal of the booster pump is increased with a shaft sleeve, and it is characterized in that: It includes a shaft seat assembly (1), a sleeve assembly (2) is installed on the shaft seat assembly (1), and a fixing assembly (3) is installed on the sleeve assembly (2); Among them, the sleeve assembly (2) includes a sleeve part A (21) and a sleeve part B (22). The inner diameters at the front and rear ends of the sleeve part A (21) are the same. The outer diameter at the rear end of the sleeve part A (21) is larger than the outer diameter at the front section, and a slope structure is provided on the surface of the sleeve part A (21). The sleeve part B (22) has the same shape and size as the sleeve part A (21); The fixing assembly (3) includes a rack (31) and a gear (32). Installation grooves are formed on the surfaces of both the sleeve part A (21) and the sleeve part B (22). The rack (31) is slidably installed in the installation groove, the gear (32) is arranged in the installation groove, and the rack (31) meshes with the gear (32).

2. The shaft sleeve is added to the mechanical seal of the booster pump according to claim 1, wherein: The shaft seat assembly (1) includes a booster pump shaft (11), a base (12), and a connecting piece (13). The base (12) is installed on the booster pump shaft (11), and there are two connecting pieces (13), and both of the two connecting pieces (13) are installed on the base (12).

3. The shaft sleeve is added to the mechanical seal of the booster pump according to claim 2, characterized in that: A threaded part (14) and a stepped part (15) are provided on the surface of the booster pump shaft (11).

4. The shaft sleeve is added to the mechanical seal of the booster pump according to claim 3, characterized in that: The outer diameters at the rear ends of the sleeve part A (21) and the sleeve part B (22) are the same as the diameter of the stepped part (15), and the outer diameters at the front sections of the sleeve part A (21) and the sleeve part B (22) are slightly larger than the diameter of the booster pump shaft (11).

5. The shaft sleeve is added to the mechanical seal of the booster pump according to claim 1, characterized in that: The sleeve assembly (2) further includes a fixing part A (23), a ratchet tooth (34), a rotating part A (25), a rotating part B (26), and a connecting rod (27). Fixing grooves are formed inside both the sleeve part A (21) and the sleeve part B (22). The fixing part A (23) and the fixing part B (24) are respectively installed in the two fixing grooves. The rotating part A (25) and the rotating part B (26) are both arranged between the fixing part A (23) and the fixing part B (24). The fixing part A (23) is connected to the rotating part A (25), the fixing part B (24) is connected to the rotating part B (26), and the connecting rod (27) connects the rotating part A (25) and the rotating part B (26).

6. The shaft sleeve is added to the mechanical seal of the booster pump according to claim 1, characterized in that: The fixing assembly (3) further includes a ratchet wheel (33) and a ratchet tooth (34). The ratchet wheel (33) is rotatably installed in the installation groove, the ratchet tooth (34) is installed in the installation groove, and the ratchet wheel (33) and the ratchet tooth (34) are engaged.

7. The shaft sleeve is added to the mechanical seal of the booster pump according to claim 6, characterized in that: The gear (32) is fixedly installed on the ratchet wheel (33).

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