Direct connection type structure for submerged pump

Abstract

The utility model discloses a direct connection type structure used for a submerged pump, which comprises a motor, a motor conversion disc, a supporting pipe, a pump body, an impeller, a liquid outlet pipe assembly and a mounting plate, a motor shaft in the motor and a pump shaft of the pump body are the same rotating shaft, the impeller is connected to the rotating shaft, the impeller is located in the pump body, and the liquid outlet pipe assembly is located in the pump body. The rotating shaft is located in the supporting pipe, the two ends of the supporting pipe are connected with the mounting plate and the pump body respectively, the mounting plate is connected with the motor conversion disc, the motor conversion disc is connected to the motor, one end of the liquid outlet pipe assembly is connected to a liquid outlet of the pump body, and the other end of the liquid outlet pipe assembly is connected to a liquid outlet of the pump body. And the other end of the liquid outlet pipe assembly is connected with the mounting plate. Compared with the prior art, miniaturization of the centrifugal pump can be achieved, meanwhile, the problem that on-site installation is difficult can be solved, and on-site use and production can be met.

Description

Technical Field

[0001] The utility model belongs to the field of centrifugal pumps, and in particular relates to a direct-connection structure for a submersible pump. Background Art

[0002] A centrifugal pump is a pump that transports liquids by the centrifugal force generated by the rotation of the impeller. It is mainly composed of an impeller, a pump body, a pump shaft, bearings, etc. Its main features include: compact structure, wide flow and head range, uniform flow, stable operation, low vibration, and low equipment installation, maintenance and repair costs.

[0003] At present, when installing centrifugal pumps for power equipment on site in the domestic fine chemical and coating industries, the construction site is generally within the factory area, especially in the tank area, which is often five stories high, with each floor about 4 meters high. There are a large number of pipelines, valves, reactors, heat exchangers and other equipment pipelines on site, and the site size is very tight. At the same time, the centrifugal pump is the last link to be installed when installing the equipment, so the installation size reserved for the centrifugal pump on site is very small and the activity space is limited. The workers on site have a hard time during the installation and maintenance operations. Therefore, the miniaturization of centrifugal pumps can also solve existing problems and become a demand on site. Utility Model Content

[0004] The utility model provides a direct connection structure for a submersible pump, which can realize the miniaturization of the centrifugal pump and solve the problem of difficult on-site installation, and can also meet the production needs on-site.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a direct-connected structure for a submersible pump, comprising: a motor, a motor conversion disk, a support tube, a pump body, an impeller, a liquid outlet pipe assembly and a mounting plate, the motor shaft in the motor and the pump shaft of the pump body are the same rotating shaft, the impeller is connected to the rotating shaft, the impeller is located in the pump body, the rotating shaft is located in the support tube, the two ends of the support tube are respectively connected to the mounting plate and the pump body, the mounting plate is connected to the motor conversion disk, the motor conversion disk is connected to the motor, one end of the liquid outlet pipe assembly is connected to the discharge port of the pump body, and the other end of the liquid outlet pipe assembly is connected to the mounting plate.

[0006] As a further description of the above technical solution:

[0007] The motor conversion disk is provided with a plurality of drainage holes.

[0008] As a further description of the above technical solution:

[0009] There are four drainage holes, and the four drainage holes are arranged equidistantly along the circumference of the motor conversion disk.

[0010] As a further description of the above technical solution:

[0011] The mounting plate is provided with a limiting groove, the motor conversion disk is provided with a limiting protrusion, and the limiting protrusion is inserted into the limiting groove.

[0012] As a further description of the above technical solution:

[0013] The rotating shaft has a first connecting section, a second connecting section and a third connecting section arranged in sequence, and the diameters of the first connecting section, the second connecting section and the third connecting section decrease in sequence.

[0014] As a further description of the above technical solution:

[0015] The first connecting section is connected with an organic seal, the impeller is connected with the second connecting section, and the third connecting section is provided with a fixed cover.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0017] 1. In the utility model, for the same liquid level height, the installation height above the mounting plate of the present invention is 350mm lower than that of the old one, which reduces the bearing housing, motor bracket, motor coupling and pump end coupling of the old structure, which not only saves the installation height size on site, but also makes on-site installation and maintenance more convenient.

[0018] 2. In the utility model, the motor adopts a single-shaft design, and the motor shaft is used as the shaft of the submersible pump, which reduces the use of motor couplings and pump-end couplings, greatly increases the concentricity of the single shaft, and makes the pump shaft run more smoothly and reliably.

[0019] 3. In the present invention, the support tube and the shaft can be universal, and the conversion disk has only two specifications, which greatly reduces the inventory of on-site users and reduces the inventory cost of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 The diagram is a schematic diagram of a direct-connected structure for a submersible pump.

[0022] Figure 2 The utility model is a structure of a direct-connection type structure of an existing submersible pump.

[0023] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0024] Figure 4 The present invention is a schematic diagram of the structure of a motor conversion disk in a direct-connected structure for a submersible pump.

[0025] Figure 5 The diagram is a schematic diagram of the structure of a rotating shaft in a direct-connected structure for a submersible pump.

[0026] Legend:

[0027] 1. Motor; 2. Motor conversion plate; 3. Support pipe; 4. Pump body; 5. Impeller; 6. Liquid outlet pipe assembly; 7. Mounting plate; 8. Rotating shaft; 9. Liquid discharge hole; 10. Limiting groove; 11. Limiting protrusion; 12. First connecting section; 13. Second connecting section; 14. Third connecting section; 15. Machine seal; 16. Fixed cover. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-5 The utility model provides a technical solution: a direct-connected structure for a submersible pump, comprising: a motor 1, a motor conversion disk 2, a support tube 3, a pump body 4, an impeller 5, a liquid outlet pipe assembly 6 and a mounting plate 7, wherein the motor shaft in the motor 1 and the pump shaft of the pump body 4 are the same rotating shaft 8, the impeller 5 is connected to the rotating shaft 8, the impeller is located in the pump body 4, the rotating shaft 8 is located in the support tube 3, the two ends of the support tube 3 are respectively connected to the mounting plate 7 and the pump body 4, the mounting plate 7 is connected to the motor conversion disk 2, the motor conversion disk 2 is connected to the motor 1, one end of the liquid outlet pipe assembly 6 is connected to the discharge port of the pump body 4, and the other end of the liquid outlet pipe assembly 6 is connected to the mounting plate 7.

[0030] The motor conversion disk 2 is provided with a plurality of drainage holes 8. Four drainage holes 9 are provided, and the four drainage holes 9 are arranged equidistantly along the circumference of the motor conversion disk 2. The motor conversion disk is connected to the motor and the mounting plate at the same time. Considering the drainage requirements, when the liquid level is too high, the water can be drained from the four drainage points, thereby improving the waterproof effect of the motor.

[0031] The mounting plate 7 is provided with a limiting groove 10, and the motor conversion disk 2 is provided with a limiting protrusion 11, and the limiting protrusion 11 is inserted into the limiting groove 10. It is convenient to install the motor conversion disk, and the sealing effect can be improved to prevent dust from entering the motor.

[0032] The rotating shaft 8 has a first connecting section 12, a second connecting section 13 and a third connecting section 14 arranged in sequence, and the diameters of the first connecting section 12, the second connecting section 13 and the third connecting section 14 decrease in sequence. The first connecting section 12 is connected to an organic seal 15, the impeller 5 is connected to the second connecting section 13, and the third connecting section 14 is provided with a fixing cover 16. This can save the internal space of the pump body and make the pump miniaturized.

[0033] Working principle: With the same liquid level, the installation height above the mounting plate is 350mm lower than the old one. The bearing housing, motor bracket, motor coupling and pump-end coupling of the old structure are reduced, which not only saves the installation height size on site, but also makes on-site installation and maintenance more convenient. The motor adopts a single-axis design, and uses the motor shaft as the shaft of the submersible pump, which reduces the use of motor couplings and pump-end couplings, greatly increases the concentricity of one shaft, and makes the pump shaft run more smoothly and reliably. The motor conversion plate must be connected to both the motor and the mounting plate, considering the drainage requirements. When the liquid level is too high, water can be drained from the four drainage points, which improves the waterproof effect of the motor. Four circular drainage holes are also set at the top of the support pipe to prevent water from flowing to the motor due to excessive liquid level. If the liquid level is within 600mm, there will be no problem with such a structure, which achieves the function of the old structure and simplifies the structure more than the old structure. Through the above-mentioned improvements, a lower installation height than normal is achieved, the structure is simpler, and it is more convenient to install and maintain. It can be mass-produced later, making on-site construction more convenient, greatly saving product costs, and greatly reducing customers' spare parts inventory.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A direct connection structure for a submersible pump, characterized in that: include: A motor, a motor conversion disk, a support tube, a pump body, an impeller, a liquid outlet pipe assembly and a mounting plate, wherein the motor shaft in the motor and the pump shaft of the pump body are the same rotating shaft, the impeller is connected to the rotating shaft, the impeller is located in the pump body, the rotating shaft is located in the support tube, the two ends of the support tube are respectively connected to the mounting plate and the pump body, the mounting plate is connected to the motor conversion disk, the motor conversion disk is connected to the motor, one end of the liquid outlet pipe assembly is connected to the discharge port of the pump body, and the other end of the liquid outlet pipe assembly is connected to the mounting plate.

2. A direct connection structure for a submersible pump according to claim 1, characterized in that: The motor conversion disk is provided with a plurality of drainage holes.

3. A direct connection structure for a submersible pump according to claim 2, characterized in that: There are four drainage holes, and the four drainage holes are arranged equidistantly along the circumference of the motor conversion disk.

4. A direct connection structure for a submersible pump according to claim 1, characterized in that: The mounting plate is provided with a limiting groove, the motor conversion disk is provided with a limiting protrusion, and the limiting protrusion is inserted into the limiting groove.

5. A direct connection structure for a submersible pump according to claim 1, characterized in that: The rotating shaft has a first connecting section, a second connecting section and a third connecting section arranged in sequence, and the diameters of the first connecting section, the second connecting section and the third connecting section decrease in sequence.

6. A direct connection structure for a submersible pump according to claim 5, characterized in that: The first connecting section is connected with an organic seal, the impeller is connected with the second connecting section, and the third connecting section is provided with a fixed cover.

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