CN212898999U - Submerged pump with novel mechanical sealing structure - Google Patents

Abstract

The utility model discloses a submerged pump with novel mechanical seal structure, its characterized in that: the submerged pump comprises a bottom plate, a frame is arranged on the top end surface of the bottom plate, a motor is supported on the frame, a supporting tube is connected on the bottom end surface of the bottom plate, a pump cover and a pump body are connected at the bottom of the supporting tube, an impeller is arranged in the pump body, a water raising pipe is also connected on the pump body, the outlet of the water raising pipe is positioned above the bottom plate, the impeller is connected with the bottom end of the pump shaft, the pump shaft is rotatably supported in the supporting pipe, the top of the pump shaft is rotatably connected in the bearing box, the top end of the pump shaft is connected with the output end of the motor, the bearing box is positioned above the bottom plate and below the frame, a mechanical sealing structure is arranged in the bearing box and is packaged in a mechanical sealing shell, and a drainage pipeline is connected to the side wall in the middle of the mechanical seal shell, and the outlet end of the drainage pipeline is positioned below the bottom plate.

Description

Submerged pump with novel mechanical sealing structure

Technical Field

The utility model relates to a submerged pump, especially a submerged pump with novel mechanical seal structure.

Background

Submerged pumps are one type of pump and are generally used to transport a variety of corrosive media, such as strong acids, bases, salts, strong oxidants, and the like, at any concentration. The traditional submerged pump needs to be provided with a mechanical seal at the upper part of liquid (namely between a motor and a bottom plate), but the mechanical seal needs to be soaked by the liquid in the working process, otherwise, dry grinding is formed, and the mechanical seal is damaged, so that the traditional submerged pump needs to be provided with a set of liquid circulation system for the mechanical seal structure, and the circulation system is started before the pump body works to prevent the mechanical seal from being in a problem. This results in a relatively high overall cost, a relatively complex fluid circulation system, and a relatively high amount of labor required for installation and adjustment. There is therefore a need for a method or apparatus that addresses the above-mentioned problems.

Disclosure of Invention

The utility model relates to a solve the above-mentioned not enough that prior art exists, provide a simple structure, design benefit, rationally distributed, low cost, easy and simple to handle's submerged pump that has novel mechanical seal structure.

The technical solution of the utility model is that: the utility model provides a submerged pump with novel mechanical seal structure which characterized in that: the submerged pump comprises a bottom plate 1, a frame 2 is arranged on the top end face of the bottom plate 1, a motor 3 is supported on the frame 2, a support tube 4 is connected on the bottom end face of the bottom plate 1, a pump cover 5 and a pump body 6 are connected on the bottom of the support tube 4, an impeller 7 is arranged in the pump body 6, a water raising pipe 8 is further connected on the pump body 6, the outlet of the water raising pipe 8 is positioned above the bottom plate 1, the impeller is connected to the bottom end of a pump shaft 9, the pump shaft 9 is rotatably supported in the support tube 4, the top of the pump shaft 9 is rotatably connected in a bearing box 10, the top of the pump shaft 9 is connected with the output end of the motor 3, the bearing box 10 is positioned above the bottom plate 1 and below the frame 2, a mechanical sealing structure 11 is arranged in the bearing box, the mechanical sealing structure 11 is packaged in a mechanical sealing shell 12, and a liquid drainage pipeline 13, the outlet end of the drainage pipeline 13 is located below the bottom plate 1, a first pipeline 14 is connected between the water raising pipe 8 and the mechanical sealing shell 12, a first valve 15 is arranged on the first pipeline 14, a liquid storage tank 17 is fixedly connected to the bottom plate 1 through a support frame 16, the liquid storage tank 17 is connected with the mechanical sealing shell 12 through a second pipeline 18, a second valve 19 is further arranged on the second pipeline 18, the height of the liquid storage tank 17 is higher than that of the mechanical sealing shell 12, and the diameter of the outlet end of the drainage pipeline 13 is smaller than the diameters of the first pipeline 14 and the second pipeline 18.

Compared with the prior art, the utility model, have following advantage:

this kind of structural style's submerged pump that has novel mechanical seal structure, its simple structure, design benefit, rationally distributed. The pump is designed to solve various problems caused by the fact that a circulating system is required to be prepared for a mechanical sealing structure in the traditional submerged pump. The liquid storage tank at a high position is used for replacing a circulating system, a water return pipeline is connected between the water raising pipe and the mechanical sealing structure, and the liquid in the liquid storage tank can be introduced into the mechanical sealing structure only by opening the valve before starting. The submerged pump has the advantages of simple overall structure, convenient maintenance and greatly reduced cost compared with the traditional submerged pump, so that the submerged pump has various advantages, is particularly suitable for popularization and application in the field and has very wide market prospect.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a mechanical seal in an embodiment of the present invention.

Detailed Description

The following description will explain embodiments of the present invention with reference to the drawings. As shown in fig. 1 and 2: a submerged pump with a novel mechanical sealing structure comprises a bottom plate 1, a frame 2 is arranged on the top end face of the bottom plate 1, a motor 3 is supported on the frame 2, a supporting tube 4 is connected on the bottom end face of the bottom plate 1, a pump cover 5 and a pump body 6 are connected at the bottom of the supporting tube 4, an impeller 7 is arranged in the pump body 6, a pumping pipe 8 is further connected on the pump body 6, the outlet of the pumping pipe 8 is positioned above the bottom plate 1, the impeller is connected at the bottom end of a pump shaft 9, the pump shaft 9 is rotatably supported in the supporting tube 4, the top of the pump shaft 9 is rotatably connected in a bearing box 10, the top of the pump shaft 9 is connected with the output end of the motor 3, the bearing box 10 is positioned above the bottom plate 1 and below the frame 2, a mechanical sealing structure 11 is arranged in the bearing box, and the mechanical sealing structure 11 is packaged, be connected with drainage pipeline 13 on the lateral wall at mechanical seal casing 12 middle part, drainage pipeline 13's exit end is located the below of bottom plate 1, still is connected with first pipeline 14 simultaneously between lifting pipe 8 and mechanical seal casing 12, be provided with first valve 15 on the first pipeline 14, still through support frame 16 fixedly connected with liquid storage pot 17 on the bottom plate 1, liquid storage pot 17 is connected with mechanical seal casing 12 through second pipeline 18 to still be provided with second valve 19 on second pipeline 18, just liquid storage pot 17 highly is higher than mechanical seal casing 12's height, drainage pipeline 13 exit end's diameter is less than the diameter of first pipeline 14 and second pipeline 18.

The utility model discloses the working process of submerged pump with novel mechanical seal structure as follows: the liquid storage tank 17 is filled with enough water in advance, before the motor 3 is started, the second valve 19 on the second pipeline 18 is opened, because the horizontal height of the liquid storage tank 17 is higher than that of the mechanical seal shell 12, the water in the liquid storage tank 17 flows into the mechanical seal shell 12 through the second pipeline 18, although a part of water is discharged through the liquid discharge pipeline 13, because the diameter of the outlet end of the liquid discharge pipeline 13 is smaller than that of the second pipeline 18, namely the water inlet speed in the mechanical seal shell 12 is higher than the water outlet speed, and meanwhile, the liquid discharge pipeline 13 is connected to the middle part of the mechanical seal shell 12, a part of water is remained in the inner cavity of the mechanical seal shell 12;

the motor 3 is started, the motor 3 can drive the pump shaft 9 to rotate, the impeller 7 is further driven to rotate, pumped media are sucked from an inlet on the pump body 6 under the action of the impeller 7 and are discharged through an outlet end of the water raising pipe 8, when water flows to the top of the water raising pipe 8, the first valve 15 is opened, and therefore a part of water flows into an inner cavity of the mechanical seal shell 12 through the first pipeline 14, and as long as the submerged pump works normally, the water is always reserved in the inner cavity of the mechanical seal shell 12, and the second valve 10 on the second pipeline 18 can be closed;

after the machine is stopped, the water remaining in the mechanical seal housing 12 is automatically discharged through the discharge pipe 13, and after a period of use, if the water in the storage tank 17 is completely consumed, the water is replenished.

Claims (1)

1. The utility model provides a submerged pump with novel mechanical seal structure which characterized in that: the submerged pump comprises a bottom plate (1), a frame (2) is arranged on the top end face of the bottom plate (1), a motor (3) is supported on the frame (2), a supporting pipe (4) is connected to the bottom end face of the bottom plate (1), a pump cover (5) and a pump body (6) are connected to the bottom of the supporting pipe (4), an impeller (7) is arranged in the pump body (6), a water raising pipe (8) is connected to the pump body (6), an outlet of the water raising pipe (8) is located above the bottom plate (1), the impeller is connected to the bottom end of a pump shaft (9), the pump shaft (9) is rotatably supported in the supporting pipe (4), the top of the pump shaft (9) is rotatably connected into a bearing box (10), the top end of the pump shaft (9) is connected with the output end of the motor (3), the bearing box (10) is located above the bottom plate (1) and below the frame (2), the bearing box is internally provided with a mechanical sealing structure (11), the mechanical sealing structure (11) is packaged in a mechanical sealing shell (12), the side wall of the middle part of the mechanical sealing shell (12) is connected with a liquid discharge pipeline (13), the outlet end of the liquid discharge pipeline (13) is positioned below the bottom plate (1), meanwhile, a first pipeline (14) is also connected between the water lifting pipe (8) and the mechanical sealing shell (12), the first pipeline (14) is provided with a first valve (15), the bottom plate (1) is also fixedly connected with a liquid storage tank (17) through a support frame (16), the liquid storage tank (17) is connected with the mechanical sealing shell (12) through a second pipeline (18), the second pipeline (18) is also provided with a second valve (19), and the height of the liquid storage tank (17) is higher than that of the mechanical sealing shell (12), the diameter of the outlet end of the liquid discharge pipeline (13) is smaller than the diameters of the first pipeline (14) and the second pipeline (18).

Images