Vertical chemical axial flow pump with reduction gearbox

Abstract

The utility model relates to a vertical chemical axial flow pump with a reduction gearbox, the vertical chemical axial flow pump with a reduction gearbox presents vertical structure as a whole, the vertical chemical axial flow pump includes: the pump body with the elbow pipe and the pump shaft, the lower end of the pump body with the elbow pipe is connected with the impeller chamber, the lower end of the impeller chamber is connected with the trumpet mouth, the upper end of the pump body with the elbow pipe is connected with the reduction gearbox seat, the upper end of the reduction gearbox seat is connected with the motor seat, the reduction gearbox seat is installed with the reduction gearbox, the motor is fixed on the motor seat, the pump shaft passes through the motor seat, the reduction gearbox seat, the pump body with the elbow pipe and the impeller chamber, the upper end of the pump shaft is connected with the reduction gearbox through the shaft coupling, and the lower end of the pump shaft is equipped with the impeller, and the motor is located above the reduction gearbox, the utility model has the advantages of small floor space, can be matched with higher speed motor, better anti - jamming performance, and can increase the service life of the pump shaft.

Description

Technical Field

[0001] This utility model relates to a chemical axial flow pump, specifically a vertical chemical axial flow pump with a gearbox that has a small footprint, can be equipped with a higher speed motor, has better anti-clogging performance, and can increase the service life of the pump shaft. Background Technology

[0002] Existing chemical axial flow pumps generally consist of a pump body, impeller, pump shaft, seal, and bearing chamber. Most adopt a horizontal chemical axial flow pump structure, and the total floor space of the pump is equal to the sum of the horizontal floor space of the pump head, bearing housing, and motor, requiring a relatively large floor space for installation and maintenance.

[0003] The motor of the vertical pump is installed at the highest point of the entire pump, and the weight of the motor accounts for a large proportion of the weight of the entire pump. Therefore, the pump center is relatively high and unstable.

[0004] Chemical axial flow pumps are exposed to corrosive liquids for extended periods of time, and the impeller and other parts in contact with the medium are prone to corrosion, requiring regular maintenance. Since the inlet and outlet flanges are connected to the system pipeline, the motor must be removed before the rotor can be extracted and the impeller can be inspected when disassembling a horizontal pump. Utility Model Content

[0005] To address the aforementioned problems, the main objective of this utility model is to provide a vertical chemical axial flow pump with a gearbox that has a small footprint, can be equipped with a higher speed motor, has better anti-clogging performance, and can increase the service life of the pump shaft.

[0006] This utility model solves the above-mentioned technical problems through the following technical solution: a vertical chemical axial flow pump with a gearbox, wherein the vertical chemical axial flow pump with a gearbox has an overall vertical structure, the vertical chemical axial flow pump with a gearbox includes: a pump body with a bend and a pump shaft, the lower end of the pump body with the bend is connected to an impeller chamber, the lower end of the impeller chamber is connected to a bell mouth, the upper end of the pump body with the bend is connected to a gearbox seat, the upper end of the gearbox seat is connected to a motor seat, a gearbox is installed in the gearbox seat, the motor is fixed on the motor seat, the pump shaft passes through the motor seat, the gearbox seat, the pump body with the bend and the impeller chamber, the upper end of the pump shaft is connected to the gearbox through a coupling, and an impeller is provided at the lower end of the pump shaft; the motor is located above the gearbox.

[0007] In a specific embodiment of this utility model, the vertical chemical axial flow pump with a gearbox also includes a seal, which is installed on the pump body with a bend and seals the pump shaft.

[0008] In a specific embodiment of this utility model, a bearing is installed on the pump shaft between the seal and the gearbox.

[0009] In a specific embodiment of this utility model, a bushing is installed on the outside of the pump shaft, the lower end of the bushing is connected to the impeller, the connection surface between the lower end of the bushing and the impeller is sealed with a rubber surface, and the upper end of the bushing is connected to a sealing element.

[0010] In a specific embodiment of this utility model, fasteners are used to connect the bushing and the shaft into a whole.

[0011] In a specific embodiment of this utility model, the impeller is a cylindrical impeller.

[0012] The positive and progressive effects of this utility model are as follows: The vertical chemical axial flow pump with a gearbox provided by this utility model has the following advantages:

[0013] This utility model adopts a vertical structure instead of the traditional horizontal chemical axial flow pump structure. The footprint of the entire pump is the same as that of the pump body with the bend, which is more than half the footprint of the horizontal pump.

[0014] This utility model adopts a gearbox transition structure to replace the traditional vertical axial flow pump structure with direct connection between the pump and motor. The whole machine is equipped with a higher speed motor, the frame size of the motor is smaller and lighter, the motor cost is lower, and the center of gravity of the whole pump is much lower than that of conventional vertical axial flow pumps, resulting in better stability.

[0015] This utility model uses an impeller instead of the traditional impeller and guide vane structure of a vertical axial flow pump to suit the operating conditions of chemical axial flow pumps. Chemical axial flow pumps are mainly used in chemical evaporation, concentration and crystallization processes. Using a specially designed impeller hydraulic model, the medium flows axially through the impeller outlet. Eliminating the guide vane structure can prevent the medium from crystallizing on the guide vanes and clogging the flow channel.

[0016] This invention uses a cylindrical impeller instead of the spherical impeller of a traditional axial flow pump. The cylindrical impeller has a wider flow channel than the spherical impeller, thus it has better anti-clogging performance and is more suitable for the use of chemical axial flow pumps in media containing a lot of crystals. In addition, compared with the spherical impeller, the cylindrical impeller can be drawn out from the pump inlet, and there is no need to adjust the spherical impeller and the center of the impeller chamber in the axial direction, which facilitates installation and maintenance.

[0017] This utility model adopts a single pump shaft structure. The rigidity of the single integral pump shaft is better than the shaft system structure of the pump shaft plus the drive shaft of the traditional vertical axial flow pump. In addition, the single pump shaft structure does not require the coaxiality of the pump shaft and the drive shaft to be corrected during pump installation, which is convenient for installation and maintenance.

[0018] This utility model uses a sleeve-shaped bushing installed on the outside of the pump shaft. The bushing and shaft system are connected as a whole by fasteners. Compared with the traditional vertical axial flow pump with a bare shaft structure without a bushing, the shaft system has better rigidity. In addition, the bushing can isolate the pump shaft from contact with the medium, making it more suitable for the use of chemical axial flow pumps with corrosive media, and can increase the service life of the pump shaft.

[0019] In this invention, the original straight pipe connected to the lower end of the impeller chamber is replaced with a flared structure. The flared structure can reduce the resistance of water flow, improve the water pump's suction efficiency, and save energy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] The following are the names corresponding to the reference numerals in this utility model:

[0022] Figure 1 In the middle: 1. Bell mouth; 2. Impeller chamber; 3. Impeller; 4. Pump body with bent pipe; 5. Pump shaft; 6. Seal; 7. Bearing housing; 8. Bearing; 9. Gearbox; 10. Motor base; 11. Coupling; 12. Motor; 13. Shaft sleeve. Detailed Implementation

[0023] The preferred embodiments of this utility model are given below with reference to the accompanying drawings to illustrate the technical solution of this utility model in detail.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention, as shown below. Figure 1 As shown: This utility model provides a vertical chemical axial flow pump with a gearbox. The vertical chemical axial flow pump with a gearbox has an overall vertical structure and includes: a pump body 4 with a bend and a pump shaft 5. The lower end of the pump body 4 with the bend is connected to an impeller chamber 2, and the lower end of the impeller chamber 2 is connected to a bell mouth 1. The upper end of the pump body 4 with the bend is connected to a gearbox seat 7, and the upper end of the gearbox seat 7 is connected to a motor seat 10. A gearbox 9 is installed inside the gearbox seat 7. A motor 12 is fixed on the motor seat 10. The pump shaft 5 passes through the motor seat 10, the gearbox seat 7, the pump body 4 with the bend and the impeller chamber 2. The upper end of the pump shaft 5 is connected to the gearbox 9 through a coupling 11. An impeller 3 is provided at the lower end of the pump shaft 5. The motor 12 is located above the gearbox 9.

[0025] In this invention, the straight pipe originally connected to the lower end of the impeller chamber 2 is replaced with a flared structure. The flared structure can reduce the resistance of water flow, improve the water pump's suction efficiency, and save energy.

[0026] The vertical chemical axial flow pump with a gearbox also includes a seal 6, which is installed on the pump body 4 with a bend and seals the pump shaft.

[0027] In this invention, a bearing 8 is installed on the pump shaft between the seal 6 and the gearbox 9.

[0028] In this invention, a bushing 13 is installed on the outside of the pump shaft 5. The lower end of the bushing 13 is connected to the impeller 3, and the connecting surfaces are sealed with a rubber surface. The upper end of the bushing 13 is connected to a sealing element.

[0029] The present invention uses a sleeve-shaped bushing 13 installed on the outside of the pump shaft, and fasteners are used to connect the bushing and the shaft into a whole.

[0030] In use, the motor first drives the gearbox to rotate, and the pump shaft 4 is driven to rotate by the motor 12 through the coupling. The pump shaft is a single long shaft, which can reduce vibration and noise, thereby ensuring the stability of the transmission. Then, the pump shaft 4 drives the impeller 1 at the bottom to rotate, thereby conveying the liquid. The conveying is stable and has a long service life.

[0031] This utility model adopts a vertical structure instead of the traditional horizontal chemical axial flow pump structure. The footprint of the entire pump is the same as that of the pump body with the bend, which is more than half the footprint of the horizontal pump.

[0032] This utility model adopts a gearbox transition structure to replace the traditional vertical axial flow pump structure with direct connection between the pump and motor. The whole machine is equipped with a higher speed motor, the frame size of the motor is smaller and lighter, the motor cost is lower, and the center of gravity of the whole pump is much lower than that of conventional vertical axial flow pumps, resulting in better stability.

[0033] This utility model uses an impeller instead of the traditional impeller and guide vane structure of a vertical axial flow pump to suit the operating conditions of chemical axial flow pumps. Chemical axial flow pumps are mainly used in chemical evaporation, concentration and crystallization processes. Using a specially designed impeller hydraulic model, the medium flows axially through the impeller outlet. Eliminating the guide vane structure can prevent the medium from crystallizing on the guide vanes and clogging the flow channel.

[0034] This invention uses a cylindrical impeller instead of the spherical impeller of a traditional axial flow pump. The cylindrical impeller has a wider flow channel than the spherical impeller, thus it has better anti-clogging performance and is more suitable for the use of chemical axial flow pumps in media containing a lot of crystals. In addition, compared with the spherical impeller, the cylindrical impeller can be drawn out from the pump inlet, and there is no need to adjust the spherical impeller and the center of the impeller chamber in the axial direction, which facilitates installation and maintenance.

[0035] This utility model adopts a single pump shaft structure. The rigidity of the single integral pump shaft is better than the shaft system structure of the pump shaft plus the drive shaft of the traditional vertical axial flow pump. In addition, the single pump shaft structure does not require the coaxiality of the pump shaft and the drive shaft to be corrected during pump installation, which is convenient for installation and maintenance.

[0036] This utility model uses a sleeve-shaped bushing installed on the outside of the pump shaft. The bushing and shaft system are connected as a whole by fasteners. Compared with the traditional vertical axial flow pump with a bare shaft structure without a bushing, the shaft system has better rigidity. In addition, the bushing can isolate the pump shaft from contact with the medium, making it more suitable for the use of chemical axial flow pumps with corrosive media, and can increase the service life of the pump shaft.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A vertical chemical axial flow pump with a gearbox, characterized in that: The vertical chemical axial flow pump with a gearbox has an overall vertical structure. It includes a pump body with a curved pipe and a pump shaft. The lower end of the pump body with the curved pipe is connected to an impeller chamber, and the lower end of the impeller chamber is connected to a bell-shaped opening. The upper end of the pump body with the curved pipe is connected to a gearbox seat, and the upper end of the gearbox seat is connected to a motor seat. A gearbox is installed inside the gearbox seat, and the motor is fixed on the motor seat. The pump shaft passes through the motor seat, the gearbox seat, the pump body with the curved pipe, and the impeller chamber. The upper end of the pump shaft is connected to the gearbox via a coupling, and an impeller is located at the lower end of the pump shaft. The motor is located above the gearbox.

2. The vertical chemical axial flow pump with a gearbox according to claim 1, characterized in that: The vertical chemical axial flow pump with a gearbox also includes a seal, which is installed on the pump body with a bend and seals the pump shaft.

3. The vertical chemical axial flow pump with a gearbox according to claim 2, characterized in that: A bearing is installed on the pump shaft between the seal and the gearbox.

4. The vertical chemical axial flow pump with a gearbox according to claim 1, characterized in that: A bushing is installed on the outside of the pump shaft. The lower end of the bushing is connected to the impeller. The connection surface between the lower end of the bushing and the impeller is sealed with a rubber surface. The upper end of the bushing is connected to a sealing element.

5. The vertical chemical axial flow pump with a gearbox according to claim 4, characterized in that: Use fasteners to connect the bushing and the shaft into a single unit.

6. The vertical chemical axial flow pump with a gearbox according to claim 1, characterized in that: The impeller is cylindrical.

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