Shield pump with abrasion-free rotating shaft

Abstract

The utility model relates to the technical field of shield pumps, in particular to a shield pump with a wear-free rotating shaft, which comprises a pump body, a front end cover and a rear end cover, the front end cover is mounted at one end of the pump body through a first connecting bolt, and a sealing ring is mounted between adjacent sides of the pump body and the front end cover. A rear end cover is installed at the other end of the pump body through a second connecting bolt, a first wear-resistant clamping groove is formed in the center of the end, close to the pump body, of the rear end cover, a sealing gasket is installed on the periphery, close to the first wear-resistant clamping groove, of the rear end cover, and an adjusting gasket is clamped to the right side, embedded into the pump body, of the interior of the front end cover; according to the utility model, not only is the structure simple, but also the wear-resistant rolling structure which can be limited and is convenient for threaded assembly is provided, the wear-free stable limiting rotation use of the rotating shaft is facilitated, and the detachable wear-resistant rolling structure is convenient for the quick replacement and maintenance use after the wear of the wear-resistant rolling structure, so that the wear-resistant rolling structure is very practical.

Description

Technical Field

[0001] The utility model relates to the technical field of shielded pumps, in particular to a shielded pump with a rotation shaft free from wear. Background Art

[0002] The canned pump is a sealless pump. The pump and the driving motor are sealed in a pressure vessel filled with the pumped medium. This pressure vessel has only static seals, and a wire group is used to provide a rotating magnetic field and drive the rotor. This structure eliminates the rotating shaft sealing device of the traditional centrifugal pump, so it can be completely leak-free. The canned pump connects the pump and the motor together. The rotor of the motor and the impeller of the pump are fixed on the same shaft. The shielding sleeve is used to separate the rotor and the stator of the motor. The rotor runs in the medium being transported, and its power is transmitted to the rotor through the stator magnetic field.

[0003] The shielded pump in the prior art does not have a wear-resistant rolling structure that can be limited and convenient for threaded assembly, which makes it difficult to use the rotating shaft to stably limit rotation without wear. At the same time, it does not have a detachable wear-resistant rolling structure, which makes it inconvenient to quickly replace and repair it after wear.

[0004] Therefore, it is necessary to design a shielded pump with a rotating shaft that is free from wear to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to provide a shielded pump with a wear-free rotating shaft, so as to improve the shielded pump with a wear-resistant rolling structure that can be limited and convenient for threaded assembly, facilitate the stable limited rotation of the rotating shaft without wear, and the detachable wear-resistant rolling structure facilitates its rapid replacement and maintenance after wear, thereby solving the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A shielded pump with a wear-free rotating shaft comprises a pump body, a front cover and a rear cover, one end of the pump body is installed with the front cover by a first connecting bolt, a sealing ring is installed between the adjacent sides of the pump body and the front cover, the other end of the pump body is installed with the rear cover by a second connecting bolt, a first wear-resistant groove is provided at the center of one end of the rear cover close to the pump body, a sealing gasket is installed at the periphery of the rear cover close to the first wear-resistant groove, an adjusting gasket is embedded in the right side of the pump body and installed, a second wear-resistant groove is provided at the center of the right side of the adjusting gasket, and the adjusting gasket A limiting slot is provided on the left side of the plate, and a rotor shielding sleeve and a stator shielding sleeve are sequentially embedded and installed inside the pump body, a stator is installed inside the stator shielding sleeve, a rotor is arranged inside the rotor shielding sleeve, a rotating shaft is installed through the inside of the rotor, a first wear-resistant rolling body is sleeved on the right side of the outer periphery of the rotating shaft, a second wear-resistant rolling body is sleeved on the left side of the outer periphery of the rotating shaft, a threaded connecting rod is installed on the left end of the rotating shaft passing through the left side of the adjusting gasket, a locking nut and an impeller are sequentially sleeved and installed on the outer periphery of the threaded connecting rod, and an electric control box is installed on the top right side of the pump body.

[0008] As a preferred solution of the utility model, a liquid inlet pipe is provided on the left side of the front end cover, a liquid outlet pipe is installed on the top of the front end cover, and a circulation pipe is installed on the right side of the liquid outlet pipe through and connected to the interior of the rear end cover.

[0009] As a preferred solution of the utility model, a first connecting thread for mounting a first wear-resistant rolling body is disposed on the periphery of one end of the rotating shaft, and a second connecting thread for mounting a second wear-resistant rolling body is disposed on the periphery of the other end of the rotating shaft.

[0010] As a preferred solution of the utility model, a first flow hole is opened in the internal rotating shaft penetrating the end face of the threaded connecting rod, and a second flow hole is opened in the end face of the rotating shaft away from the threaded connecting rod, and the first flow hole and the second flow hole are both T-shaped opening structures.

[0011] As a preferred solution of the utility model, the first wear-resistant rolling body is size-matched and mounted inside the first wear-resistant slot, and the second wear-resistant rolling body is size-matched and mounted inside the second wear-resistant rolling body.

[0012] As a preferred solution of the utility model, a limiting clamp is rotatably installed inside a limiting clamping groove embedded in the right side of the impeller.

[0013] Beneficial effect: With regard to the shielded pump in the prior art, it does not have a wear-resistant rolling structure that can be limited and convenient for threaded assembly, which makes it inconvenient to use the rotating shaft for stable limited rotation without wear. At the same time, it is inconvenient to quickly replace and repair it after wear because it does not have a detachable wear-resistant rolling structure. In the utility model, the first connecting thread and the second connecting thread set on the rotating shaft are convenient for threaded connection and assembly of the first wear-resistant rolling body and the second wear-resistant rolling body, so that the rotating shaft for assembling the first wear-resistant rolling body and the second wear-resistant rolling body cooperates with the rear end cover with the first wear-resistant slot and the adjustment gasket with the second wear-resistant slot to limit and clamp each other, thereby facilitating stable limited rotation while avoiding wear of the rotating shaft. At the same time, the detachable first wear-resistant rolling body and the second wear-resistant rolling body are convenient for quick replacement and repair after wear. The structure is simple and has a wear-resistant rolling structure that can be limited and convenient for threaded assembly, which is convenient for stable limited rotation of the rotating shaft without wear, and the detachable wear-resistant rolling structure is convenient for quick replacement and repair after wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall front view of a canned pump with a wear-free rotating shaft according to the utility model;

[0015] Figure 2 This is a schematic diagram of the overall internal structure of a shielded pump with a wear-free rotating shaft according to the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of a pump body, a front cover, a rear cover, a sealing ring, a first connecting bolt, a second connecting bolt, and a circulating pipe of a shielded pump with a rotating shaft free from wear according to the utility model;

[0017] Figure 4 The utility model is a schematic diagram of the internal structure of the rotor, the rotating shaft, the first wear-resistant rolling body, the second wear-resistant rolling body, the adjusting gasket and the impeller of a shielded pump with a wear-free rotating shaft.

[0018] In the figure: 1. pump body; 11. front end cover; 111. liquid inlet pipe; 112. liquid outlet pipe; 12. rear end cover; 121. sealing gasket; 122. first wear-resistant slot; 13. sealing ring; 14. first connecting bolt; 15. second connecting bolt; 16. circulation pipe; 2. electric control box; 3. stator; 31. stator shielding sleeve; 4. rotor shielding sleeve; 5. rotor; 6. rotating shaft; 61. first connecting thread; 62. first circulation hole; 63. second connecting thread; 64. second circulation hole; 65. threaded connecting rod; 66. locking nut; 7. first wear-resistant rolling element; 8. second wear-resistant rolling element; 9. adjusting gasket; 91. second wear-resistant slot; 92. limit slot; 10. impeller; 100. limit card. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant literature, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this article includes any and all combinations of one or more related listed items.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A shielded pump with a wear-free rotating shaft comprises a pump body 1, a front end cover 11 and a rear end cover 12. The front end cover 11 is installed at one end of the pump body 1 through a first connecting bolt 14, a sealing ring 13 is installed between the adjacent sides of the pump body 1 and the front end cover 11, and the rear end cover 12 is installed at the other end of the pump body 1 through a second connecting bolt 15. A liquid inlet pipe 111 is provided on the left side of the front end cover 11, a liquid outlet pipe 112 is installed on the top of the front end cover 11, and a circulation pipe 16 is installed on the right side of the liquid outlet pipe 112 through the inside of the rear end cover 12, a first wear-resistant groove 122 is provided at the center of one end of the rear end cover 12 close to the pump body 1, a sealing gasket 121 is installed on the periphery of the rear end cover 12 close to the first wear-resistant groove 122, and the interior of the front end cover 11 is embedded with a pump An adjusting gasket 9 is clamped on the right side of the body 1, a second wear-resistant clamping groove 91 is provided at the right center of the adjusting gasket 9, a limiting clamping groove 92 is provided on the left side of the adjusting gasket 9, a rotor shielding sleeve 4 and a stator shielding sleeve 31 are sequentially embedded and installed inside the pump body 1, a stator 3 is installed inside the stator shielding sleeve 31, a rotor 5 is arranged inside the rotor shielding sleeve 4, a rotating shaft 6 is installed through the inside of the rotor 5, a first wear-resistant rolling body 7 is sleeved on the right side of the outer periphery of the rotating shaft 6, a second wear-resistant rolling body 8 is sleeved on the left side of the outer periphery of the rotating shaft 6, a threaded connecting rod 65 is installed on the left end of the rotating shaft 6 through the left side of the adjusting gasket 9, a locking nut 66 and an impeller 10 are sleeved and installed on the outer periphery of the threaded connecting rod 65 in sequence, and an electric control box 2 is installed on the top right side of the pump body 1.

[0025] Specifically, a first connecting thread 61 for installing the first wear-resistant rolling body 7 is arranged on the periphery of one end of the rotating shaft 6, and a second connecting thread 63 for installing the second wear-resistant rolling body 8 is arranged on the periphery of the other end of the rotating shaft 6. The size of the first wear-resistant rolling body 7 is matched and card-mounted inside the first wear-resistant card groove 122, and the size of the second wear-resistant rolling body 8 is matched and card-mounted inside the second wear-resistant rolling body 8. The first connecting thread 64 and the second connecting thread 63 provided on the rotating shaft 6 are conveniently threadedly connected and assembled with the first wear-resistant rolling body 7 and the second wear-resistant rolling body 8 respectively, so that the rotating shaft 6 on which the first wear-resistant rolling body 7 and the second wear-resistant rolling body 8 are assembled cooperate with the rear end cover 12 with the first wear-resistant card groove 122 and the adjusting gasket 9 with the second wear-resistant card groove 91 to limit and card each other, thereby facilitating stable limited rotation while avoiding wear of the rotating shaft 6. At the same time, the detachable first wear-resistant rolling body 7 and the second wear-resistant rolling body 8 are convenient for their rapid replacement and maintenance after wear.

[0026] Preferably, the internal rotating shaft 6 through which the end face of the threaded connecting rod 65 is provided with a first flow hole 62, and the end face of the rotating shaft 6 away from the threaded connecting rod 65 is provided with a second flow hole 64, and the first flow hole 62 and the second flow hole 64 are both T-shaped opening structures. The rotating shaft 6 with the first flow hole 62 and the second flow hole 64 does not affect the filling of the pressure vessel of the pump body 1 by the pumping medium.

[0027] Preferably, a limit card 100 is rotatably installed inside the limit card slot 92 embedded in the right side of the impeller 10. The limit card 100 provided by the impeller 10 is clamped in the limit card slot 92, which facilitates the limited and stable rotation of the impeller 10 driven by the rotating shaft 6.

[0028] To sum up, the utility model is not only simple in structure but also has a wear-resistant rolling structure that can be limited and convenient for threaded assembly, which is convenient for the stable limited rotation of the rotating shaft without wear, and the detachable wear-resistant rolling structure facilitates its rapid replacement and maintenance after wear, which is very practical.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A canned pump with a wear-free rotating shaft, comprising a pump body (1), a front cover (11) and a rear cover (12), characterized in that A front end cover (11) is installed at one end of the pump body (1) through a first connecting bolt (14); a sealing ring (13) is installed between the adjacent sides of the pump body (1) and the front end cover (11); a rear end cover (12) is installed at the other end of the pump body (1) through a second connecting bolt (15); a first wear-resistant groove (122) is provided at the center of one end of the rear end cover (12) close to the pump body (1); a sealing gasket (121) is installed at the periphery of the rear end cover (12) close to the first wear-resistant groove (122); an adjusting gasket (9) is embedded in the right side of the pump body (1) and is installed inside the front end cover (11); a second wear-resistant groove (91) is provided at the center of the right side of the adjusting gasket (9); a limit groove is provided on the left side of the adjusting gasket (9) (92), a rotor shielding sleeve (4) and a stator shielding sleeve (31) are sequentially embedded in the pump body (1), a stator (3) is mounted in the stator shielding sleeve (31), a rotor (5) is arranged in the rotor shielding sleeve (4), a rotating shaft (6) is installed through the inside of the rotor (5), a first wear-resistant rolling body (7) is sleeved on the right side of the outer periphery of the rotating shaft (6), a second wear-resistant rolling body (8) is sleeved on the left side of the outer periphery of the rotating shaft (6), a threaded connecting rod (65) is installed on the left side of the adjusting gasket (9) through the left end of the rotating shaft (6), a locking nut (66) and an impeller (10) are sequentially sleeved on the outer periphery of the threaded connecting rod (65), and an electric control box (2) is installed on the right side of the top of the pump body (1).

2. A canned motor pump with a rotating shaft free from wear according to claim 1, characterized in that: A liquid inlet pipe (111) is provided on the left side of the front end cover (11), a liquid outlet pipe (112) is installed on the top of the front end cover (11), and a circulation pipe (16) is installed on the right side of the liquid outlet pipe (112) and is connected to the interior of the rear end cover (12).

3. A canned motor pump with a rotating shaft free from wear according to claim 1, characterized in that: A first connecting thread (61) for mounting a first wear-resistant rolling body (7) is disposed on the periphery of one end of the rotating shaft (6), and a second connecting thread (63) for mounting a second wear-resistant rolling body (8) is disposed on the periphery of the other end of the rotating shaft (6).

4. A canned motor pump with a rotating shaft free from wear according to claim 1, characterized in that: The internal rotating shaft (6) passing through the end face of the threaded connecting rod (65) is provided with a first circulation hole (62), and the end face of the rotating shaft (6) away from the threaded connecting rod (65) is provided with a second circulation hole (64), and the first circulation hole (62) and the second circulation hole (64) are both T-shaped opening structures.

5. A canned motor pump with a rotating shaft free from wear according to claim 1, characterized in that: The first wear-resistant rolling body (7) is matched in size and is clamped inside the first wear-resistant clamping groove (122), and the second wear-resistant rolling body (8) is matched in size and is clamped inside the second wear-resistant rolling body (8).

6. A canned motor pump with a rotating shaft free from wear according to claim 1, characterized in that: The right side of the impeller (10) is embedded in the limiting clamping groove (92) and a limiting clamping member (100) is rotatably mounted therein.

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