CN212774801U

CN212774801U - Submerged pump with washing device

Info

Publication number: CN212774801U
Application number: CN202021695038.2U
Authority: CN
Inventors: 阎魁; 矫文玉; 孙元武
Original assignee: Yantai Humon Pumps Co ltd
Current assignee: Yantai Humon Pumps Co ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-03-23
Anticipated expiration: 2030-08-14

Abstract

The utility model provides a submerged pump with wash towards device, including the pump body, be equipped with the pump shaft in the pump body centre bore, the pump shaft lower extreme ann has the impeller, and the impeller is located pump body inner chamber, and the pump shaft outside in the pump cover is equipped with down protects the axle sleeve, protects the axle sleeve outside down and is equipped with gland and sliding bearing body A, and the sliding bearing body A outside is equipped with the sleeve pipe, the pump shaft outside at sleeve pipe middle part is equipped with sliding bearing body B, it is equipped with seal assembly to protect down between axle sleeve, gland and the sliding bearing body A, it has outer washing hole to bore on the sliding bearing body A, outer washing hole is linked together with outer washing pipeline, outer washing pipeline one end is passed the bottom plate and is connected with outer washing flange, be equipped with the water conservancy diversion hole on the sliding bearing body B, water conservancy diversion hole both ends all communicate with each. The utility model discloses with the separation of medium and submerged pump non-flow through parts, the non-corrosion, the wearing and tearing of flow through parts are lighter, have reduced the material requirement of these parts, have improved the life of pump, have prolonged the maintenance cycle of pump.

Description

Submerged pump with washing device

Technical Field

The utility model belongs to the field of machinery, specifically speaking relates to a submerged pump with wash towards device.

Background

Under the condition that a common submerged pump does not perform special treatment on a submerged part, and a shaft, a bushing, a shaft sleeve and the like are immersed in the medium, firstly, the submerged pump has high requirements on the material of a submerged part, and is required to resist corrosion and wear, so that the cost of the pump is increased; secondly, for some pumps with more impurities or higher viscosity, the medium is easy to adhere between the friction pairs, the service life of submerged parts is shortened, the replacement frequency of wearing parts is accelerated, the maintenance period of a user is shortened, and the unnecessary cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a submerged pump with wash towards device has solved the shortcoming that ordinary submerged pump medium among the background art easily adheres to on the pump liquid lower part.

The technical scheme of the utility model is realized like this: a submerged pump with a washing device comprises a pump body, a pump shaft is arranged in a central hole of the pump body, an impeller is arranged at the lower end of the pump shaft, the impeller is positioned in an inner cavity of the pump body, a pump cover is arranged on the outer side of the impeller, a lower protective shaft sleeve is arranged on the outer side of the pump shaft in the pump cover, a gland and a sliding bearing body A are arranged on the outer side of the lower protective shaft sleeve, a bushing is arranged between the lower protective shaft sleeve and the sliding bearing body A, a sleeve is arranged on the outer side of the sliding bearing body A, a sliding bearing body B is arranged on the outer side of the pump shaft in the middle of the sleeve, a pressure relief hole is arranged on one side of the upper portion of the sleeve, the upper end of the sleeve is connected with a bottom plate, a sealing assembly is arranged among the lower protective shaft sleeve, the gland and the sliding bearing body A, an outer washing hole is drilled on the sliding, both ends of the diversion hole are communicated with the inner cavity of the sleeve;

further, an outlet flange and a gas inlet flange are arranged on the bottom plate, the outlet flange is communicated with an outlet pipeline, the outlet pipeline is connected with a pump body below, and the gas inlet flange is communicated with a medium storage container.

Furthermore, the pump cover, the gland and the sliding bearing body A are fixedly connected through bolts and end socket nuts respectively.

The utility model has the advantages that: the utility model discloses with the separation of medium and submerged pump non-flow through parts, the non-corrosion, the wearing and tearing of flow through parts are lighter, have reduced the material requirement of these parts, have improved the life of pump, have prolonged the maintenance cycle of pump. The utility model discloses an increase pump seal reliability, except that the normal sealed pad of installation on the pump bottom plate, the flange interface has still been reserved, during the volatile medium of transport, can pour into nitrogen gas (or other inert gas) into in to medium storage container through reserving the flange interface, make and be full of nitrogen gas (or other inert gas) between medium liquid level and the bottom plate, realize sealedly through keeping gas pressure, the partial fastener of submerged adopts special design equally, adopt head nut (install the sealing washer additional), with the bolt, complete and medium isolation such as double-screw bolt, prevent that the fastener is because of corroding, cause such as rust leads to dismantling the difficulty.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

fig. 3 is a partially enlarged schematic view of the point B in fig. 1 according to the present invention.

Description of the parts: 1. the pump body, 2, impeller, 3, pump cover, 4, gland, 5, lower protecting shaft sleeve, 6, sealing assembly, 7, sliding bearing body A, 8, bushing, 9, outlet pipeline, 10, outer flushing pipeline, 11, sleeve, 12, pump shaft, 13, diversion hole, 14, bottom plate, 15, outlet flange, 16, outer flushing flange, 17, motor frame, 18, gas inlet flange, 19, pressure relief hole, 20, seal head nut, 21, outer flushing hole, 22 and sliding bearing body B.

Detailed Description

For a better understanding and appreciation of the invention, it will be further described in connection with the accompanying drawings: a submerged pump with a washing device comprises a pump body 1, a pump shaft 12 is arranged in a central hole of the pump body 1, an impeller 2 is arranged at the lower end of the pump shaft 12, the impeller 2 is positioned in an inner cavity of the pump body 1, a pump cover 3 is arranged on the outer side of the impeller 2, a lower protective shaft sleeve 5 is arranged on the outer side of the pump shaft 12 in the pump cover 3, a gland 4 and a sliding bearing body A7 are arranged on the outer side of the lower protective shaft sleeve 5, a bushing 8 is arranged between the lower protective shaft sleeve 5 and the sliding bearing body A7, a sleeve 11 is arranged on the outer side of a sliding bearing body A7, a sliding bearing body B22 is arranged on the outer side of the pump shaft 12 in the middle of the sleeve 11, a pressure relief hole 19 is formed in one side of the upper portion of the sleeve 11, the upper end of the sleeve 11 is connected with a bottom plate 14, a sealing assembly 6 is arranged; the mechanical seal has higher price and high reliability. By using a sealing device, the medium is isolated from components such as shafts, bushings, etc., without the medium contacting these components and corroding or abrading these components.

An outer washing hole 21 is drilled in the sliding bearing body A7, the outer washing hole 21 is communicated with an outer washing pipeline 10, one end of the outer washing pipeline 10 penetrates through the bottom plate 14 to be connected with an outer washing flange 16, a guide hole 13 is formed in the sliding bearing body B22, and two ends of the guide hole 13 are communicated with the inner cavity of the sleeve 11; an outlet flange 15 and a gas inlet flange 18 are arranged on the bottom plate 14, the outlet flange 15 is communicated with an outlet pipeline 9, the outlet pipeline 9 is connected with the lower pump body 1, the gas inlet flange 18 is communicated with a medium storage container, and the pump cover 3, the gland 4 and the sliding bearing body A7 are fixedly connected through bolts and a seal head nut 20 respectively.

Specifically, after the medium is sucked from the inlet, the medium is isolated outside a friction pair (consisting of a movable assembly shaft sleeve and a static assembly shaft sleeve) due to the existence of the sealing assembly 6, and the influence on the friction pair is avoided; the lubrication and heat dissipation of the friction pair are completed by external washing liquid: an outer flushing hole 21 is drilled in the sliding bearing body 7, clean flushing liquid which does not pollute a medium is injected through the outer flushing flange 16, the friction pair is lubricated and then flows upwards to pass through the flow guide hole 13, and finally the flushing liquid is discharged into the medium through the pressure relief hole 19. When the conveying medium is volatile, nitrogen (or other inert gas) can be injected through the 18 gas inlet flange to assist sealing, and the sealing reliability is improved.

Claims

1. The utility model provides a submerged pump with wash towards device, includes the pump body (1), is equipped with pump shaft (12) in the pump body (1) centre bore, and impeller (2) have been installed to pump shaft (12) lower extreme, and impeller (2) are located pump body (1) inner chamber, and impeller (2) outside is equipped with pump cover (3), and pump shaft (12) outside in pump cover (3) is equipped with down protects axle sleeve (5), protects axle sleeve (5) outside down and is equipped with gland (4) and sliding bearing body A (7), protects and is equipped with between axle sleeve (5) and the sliding bearing body A (7) bushing (8) down, and the sliding bearing body A (7) outside is equipped with sleeve pipe (11), the pump shaft (12) outside at sleeve pipe (11) middle part is equipped with sliding bearing body B (22), and sleeve pipe (11) upper portion one side is equipped with pressure release hole (19), and sleeve pipe (11) upper end is connected with bottom plate (14), its characterized, Be equipped with seal assembly (6) between gland (4) and the sliding bearing body A (7), it has outer washing hole (21) to bore on sliding bearing body A (7), outer washing hole (21) are linked together with outer washing pipeline (10), outer washing pipeline (10) one end is passed bottom plate (14) and is connected with outer washing flange (16), be equipped with water conservancy diversion hole (13) on sliding bearing body B (22), water conservancy diversion hole (13) both ends all communicate with each other with sleeve pipe (11) inner chamber.

2. A submerged pump with flushing device according to claim 1, characterised in that the bottom plate (14) is provided with an outlet flange (15) and a gas inlet flange (18), the outlet flange (15) being in communication with an outlet line (9), the outlet line (9) being connected to the lower pump body (1), the gas inlet flange (18) being in communication with a medium reservoir.

3. A submerged pump with a flushing device according to claim 1, characterised in that the pump cover (3), the gland (4) and the sliding bearing body a (7) are fixedly connected by means of bolts and gland nuts (20), respectively.