A submersible flow-throwing device for improving the operating environment of reducer and motor

Abstract

The utility model provides a submersible flow impeller for improving the operating environment of a reducer and a motor, comprising a motor, a reducer and an impeller connected in sequence, and also comprising a first magnet, which is arranged in the inner cavity of the reducer and fixedly mounted on the bottom inner wall of the housing of the reducer. A submersible flow impeller for improving the operating environment of a reducer and a motor is provided, which can effectively reduce the content of metal powder in lubricating oil and reduce the replacement frequency of lubricating oil in the reducer.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to a submersible flow propeller for improving the operating environment of a reducer and a motor. Background Art

[0002] Submersible flowmakers are widely used in the oxidation ditch process of sewage treatment. The horizontally installed submersible flowmakers mix and push the sewage so that the sludge in the sewage will not precipitate. The submersible flowmaker is composed of a motor, a reducer and an impeller. The reducer is arranged at the output end of the motor, and the impeller is arranged at the output end of the reducer. A mechanical seal cavity is formed between the end of the motor and the end of the reducer. The mechanical seal cavity is connected to the inner cavity of the reducer. A mechanical seal is arranged in the mechanical seal cavity. The mechanical seal is used to prevent the lubricating oil in the cavity from entering the motor to protect the safe operation of the motor. However, the following situations will affect the long-term safe use of the submersible flowmaker:

[0003] 1. During the operation of the reducer, the high-speed rotating gear pairs mesh with each other, causing metal wear and producing metal powder. The metal powder mixes with the lubricating oil to form a mixed liquid. The mixed liquid acts as a lubricant for the gear pair, causing the meshing surface of the gear to gradually wear, thereby shortening the life of the reducer. Therefore, it is necessary to replace the lubricating oil regularly to ensure the safe and reliable use of the reducer.

[0004] 2. The high-speed rotating mechanical seal pair performs relative sealing movement through lubricating oil under the action of the spring. Since the mechanical seal chamber is connected to the inner chamber of the reducer, metal powder enters the mechanical seal chamber along with the lubricating oil. When the metal powder enters between the seal pairs, the sealing surface is worn, so that the lubricating oil enters the motor, causing damage to the motor.

[0005] 3. The volume of the mechanical seal chamber is small, and there are hidden dangers in the heat dissipation of the mechanical seal. Summary of the invention

[0006] The technical problem to be solved by the utility model is to provide a submersible flow propeller which improves the operating environment of a reducer and a motor, can effectively reduce the metal powder content in the lubricating oil, and reduce the replacement frequency of the lubricating oil in the reducer.

[0007] In order to solve the above technical problems, an embodiment of the utility model provides a submersible flow propeller that improves the operating environment of the reducer and the motor, including a motor, a reducer and an impeller connected in sequence, and also includes a first magnet, which is arranged in the inner cavity of the reducer and fixedly mounted on the bottom inner wall of the reducer housing.

[0008] As a further improvement to the embodiment of the utility model, the first magnet is cylindrical, and the axial direction of the first magnet is vertical.

[0009] As a further improvement of the embodiment of the utility model, a plurality of flow grooves penetrating inside and outside of the tube are provided in the lower middle part of the tube wall of the first magnet.

[0010] As a further improvement of the embodiment of the utility model, it also includes a second magnet, which is arranged in the mechanical seal cavity formed between the motor and the reducer, and is fixedly mounted on the bottom inner wall of the mechanical seal seat.

[0011] As a further improvement of the embodiment of the utility model, the second magnet is in sheet shape.

[0012] As a further improvement of the embodiment of the utility model, the lower surface of the second magnet is matched with the inner wall surface of the mechanical seal seat.

[0013] As a further improvement of the embodiment of the utility model, it also includes a flow swirl member, which is installed on the motor rotor shaft and is located in the mechanical seal cavity.

[0014] As a further improvement of the embodiment of the utility model, the flow stirring member includes a body, a shaft hole is provided at the center of the body, and the body is sleeved on the motor rotor shaft through the shaft hole; and blades are provided on the outer wall of the body.

[0015] As a further improvement of the embodiment of the utility model, a retaining ring is fixedly provided on the motor rotor shaft, one end of the flow stirring member abuts against the retaining ring, and the other end abuts against the mechanical seal.

[0016] As a further improvement of the embodiment of the utility model, the number of the blades is 2 to 3.

[0017] Compared with the prior art, the technical solution of the utility model has the following beneficial effects: a submersible flow-propelling device for improving the operating environment of a reducer and a motor provided by an embodiment of the utility model, by arranging magnets in the inner cavity of the reducer and the mechanical seal cavity, continuously collects metal powder moving with the lubricating oil during operation, thereby reducing the metal powder in the lubricating oil, improving the lubrication effect of the gear pair, greatly slowing down the wear rate of the gear pair, effectively reducing the frequency of replacing the lubricating oil, ensuring the long-term and reliable use of the reducer and the mechanical seal, improving the operating environment of the reducer and the motor, and ensuring the safe operation of the submersible flow-propelling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a submersible flow-thrusting device for improving the operating environment of a reducer and a motor according to an embodiment of the utility model;

[0019] Figure 2 yes Figure 1 A cross-sectional view of the structure between the motor and the impeller;

[0020] Figure 3 yes Figure 2 Schematic diagram of the structure of the stirring element.

[0021] The figure includes: impeller 1, reducer 2, housing 21, transmission member 22, reducer inner cavity 3, mechanical seal cavity 4, retaining ring 5, agitator 6, shaft hole 61, body 62, blade 63, motor 7, mechanical seal 8, first magnet 91, second magnet 92, and mechanical seal seat 10. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings.

[0023] The utility model provides a submersible flow propeller that improves the operating environment of the reducer and the motor, such as Figure 1 As shown, it includes a motor 7, a reducer 2 and an impeller 1 which are connected transversely in sequence. The motor 7 is arranged horizontally, the mechanical seal seat 10 passes through the rotor shaft of the motor 7 and is arranged at the end of the motor 10, the reducer 2 is arranged at the end of the mechanical seal seat 10, and the impeller 1 is arranged on the reducer rotor shaft. The reducer 2 includes a housing 21 and a transmission member 22, and a reducer inner cavity 3 is formed in the housing 21, and the transmission member 22 is arranged in the reducer inner cavity 3. The pinion gear at the end of the motor 7 is meshed with the large gear of the primary transmission of the reducer 2, and the pinion gear rotating at a high speed drives the transmission member 22 in the reducer to move, thereby obtaining the required transmission ratio. A mechanical seal cavity 4 is formed between the mechanical seal seat 10 and the end of the reducer 2, and the internal space of the reducer itself forms the reducer inner cavity 3. The mechanical seal cavity 4 and the reducer inner cavity 3 are connected to form a closed space, and lubricating oil is injected into the closed space for lubrication of the sealing pair of the transmission member 22 and the mechanical seal 8 to ensure reliable operation of the transmission member and the mechanical seal.

[0024] like Figure 1 and Figure 2 As shown, the submersible flow propeller of this embodiment further includes a first magnet 91, which is disposed in the reducer inner cavity 3 and fixedly mounted on the bottom inner wall of the housing 21 of the reducer 2. If the lubricating oil contains metal powder, when the metal powder moves with the lubricating oil to the vicinity of the first magnet 91 during operation, the metal powder is accelerated to move toward it under the action of magnetic force, and is thus absorbed by the first magnet.

[0025] The submersible flow-thrusting device of the present embodiment arranges a first magnet in the inner cavity of the reducer to continuously collect metal powder moving with the lubricating oil during operation, thereby reducing the metal powder in the lubricating oil, improving the lubrication effect of the gear pair, greatly slowing down the wear rate of the gear pair, and effectively reducing the replacement frequency of the lubricating oil, thereby ensuring the long-term and reliable use of the reducer and mechanical seal, improving the operating environment of the reducer and the motor, and ensuring the safe operation of the submersible flow-thrusting device.

[0026] Preferably, the first magnet 91 is cylindrical, and the axial direction of the first magnet 91 is vertical. When the moving metal powder flows to the vicinity of the outer surface of the first magnet 91, it is adsorbed onto the outer surface of the first magnet; when the moving metal powder flows into the inner cavity of the first magnet 91, it is adsorbed onto the inner surface of the first magnet; when the moving metal powder flows to the top surface of the first magnet 91, it is adsorbed onto the top surface of the first magnet. The inner surface, outer surface and top surface of the cylindrical first magnet 91 can absorb more metal powder at the same time, thereby improving the efficiency of absorbing metal powder.

[0027] Preferably, a plurality of flow grooves penetrating the inside and outside of the barrel are provided in the middle and lower part of the barrel wall of the first magnet 91. When the moving lubricating oil containing metal powder flows into the inner cavity of the first magnet, the metal powder is adsorbed by the inner surface of the first magnet, and the lubricating oil flows out to the outside of the barrel through the flow grooves, thereby purifying the lubricating oil. When the lubricating oil containing metal powder enters the inner cavity again, the metal powder is further absorbed, and the lubricating oil flows out to the outside of the barrel through the flow grooves, thereby continuously performing the absorption cycle.

[0028] Preferably, Figure 2 As shown, the submersible flow propeller of this embodiment further includes a second magnet 92, which is disposed in the mechanical seal chamber 4 formed between the motor 7 and the reducer 2, and is fixedly mounted on the bottom inner wall of the mechanical seal seat 10. When the lubricating oil containing metal powder in the mechanical seal chamber moves onto or near the second magnet, the metal powder is absorbed by the second magnet, thereby purifying the lubricating oil, improving the operating environment of the mechanical seal, and thus improving the operating environment of the motor.

[0029] Preferably, the second magnet 92 is in the form of a sheet. The lower surface of the second magnet 92 is adapted to the inner wall surface of the mechanical seal seat 10 .

[0030] Preferably, Figure 2 As shown, the submersible flow propeller of this embodiment further includes a flow stirring member 6, which is mounted on the motor rotor shaft and is located in the mechanical seal chamber 4. Specifically, as Figure 3 As shown, the flow stirrer 6 includes a body 62, a shaft hole 61 is provided at the center of the body 62, and the body 62 is sleeved on the motor rotor shaft through the shaft hole 61. The outer wall of the body 62 is provided with blades 63, and the number of blades 63 is 2 to 3. The flow stirrer 6 rotates in the mechanical seal chamber 4 along with the motor rotor shaft, and the blades work on the lubricating oil to produce tangential fluid, thereby continuously changing the motion trajectory of the metal powder in the mechanical seal chamber 4, so that the metal powder is continuously adsorbed by the second magnet 92. At the same time, the flowing lubricating oil takes away the heat generated by the mechanical seal pair in time, and the flowing lubricating oil is effectively cooled by the water outside the cavity, which further improves the operating environment of the mechanical seal.

[0031] Preferably, a retaining ring 5 is fixedly provided on the motor rotor shaft, one end of the flow stirrer 6 abuts against the retaining ring 5, and the other end abuts against the mechanical seal 8. The retaining ring 5 is used to position the flow stirrer 6, thereby ensuring the axial positioning of the mechanical seal 8, so that the mechanical seal operates effectively under the action of the spring.

[0032] The working process of the submersible flow propeller for improving the operating environment of the reducer and the motor in the above preferred embodiment is as follows:

[0033] The high-speed rotating motor drives the transmission parts in the reducer to rotate at high speed, thereby driving the lubricating oil in the reducer cavity to fly out tangentially. If the reducer cavity contains metal powder, the metal powder and the lubricating oil form a mixed liquid. When the metal powder in the mixed liquid flows to the vicinity of the first magnet at the bottom of the reducer cavity, the magnetic field generated by the first magnet accelerates the metal powder to move toward the first magnet, so that the metal powder is adsorbed by the first magnet.

[0034] When the metal powder in the mixed liquid flows to the top surface of the second magnet 92, the metal powder is adsorbed onto the top surface of the second magnet; when the metal powder in the mixed liquid flows to the vicinity of the outer surface of the second magnet 92, the metal powder is adsorbed onto the outer surface of the second magnet; when the metal powder in the mixed liquid flows into the inner cavity of the second magnet 92, the metal powder is adsorbed onto the inner surface of the second magnet, and the lubricating oil flows out to the outside of the cylinder through the flow groove; thereby continuously purifying the lubricating oil and improving the operating environment of the reducer.

[0035] The agitator 6 arranged in the mechanical seal chamber 4 rotates at high speed with the motor rotor shaft, driving the lubricating oil in the mechanical seal chamber to fly out tangentially, and the metal powder in the lubricating oil constantly changes its running trajectory. When the metal powder runs near the second magnet 92, the magnetic field formed by the second magnet accelerates the metal powder to move toward the second magnet, so that the metal powder is adsorbed, and the lubricating oil in the mechanical seal chamber is continuously purified. At the same time, the fluid generated by the agitator 6 continuously takes away the heat generated by the mechanical seal pair, and the flowing lubricating oil is effectively cooled by the water outside the cavity, which further improves the operating environment of the mechanical seal. Since the reducer cavity and the mechanical seal cavity are connected, the fluid generated by the high-speed rotating agitator 6 accelerates the flow of the lubricating oil in the enclosed space, thereby improving the temperature of the lubricating oil in the reducer, and further improving the operating environment of the reducer.

[0036] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above specific embodiments. The above specific embodiments and the description in the specification are only for further illustrating the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the claims and their equivalents.

Claims

1. A submersible flow propeller for improving the operating environment of a reducer and a motor, characterized in that: It comprises a motor (7), a reducer (2) and an impeller (1) connected in sequence, and also comprises a first magnet (91), the first magnet (91) being arranged in an inner cavity (3) of the reducer and fixedly mounted on the bottom inner wall of a housing (21) of the reducer (2).

2. The submersible flow propeller according to claim 1, characterized in that: The first magnet (91) is cylindrical, and the axial direction of the first magnet (91) is vertical.

3. The submersible flow propeller according to claim 2, characterized in that: A plurality of flow grooves penetrating inside and outside the tube are provided at the lower middle portion of the tube wall of the first magnet (91).

4. The submersible flow propeller according to claim 1, characterized in that: It also includes a second magnet (92), which is arranged in a mechanical seal cavity (4) formed between the motor (7) and the reducer (2) and is fixedly mounted on the bottom inner wall of the mechanical seal seat (10).

5. The submersible flow propeller according to claim 4, characterized in that: The second magnet (92) is in the shape of a sheet.

6. The submersible flow propeller according to claim 5, characterized in that: The lower surface of the second magnet (92) is matched with the inner wall surface of the mechanical seal seat (10).

7. The submersible flow propeller according to claim 1, characterized in that: It also includes a flow stirring member (6), which is mounted on the motor rotor shaft and is located in the mechanical seal chamber (4).

8. The submersible flow propeller according to claim 7, characterized in that: The flow stirring member (6) comprises a body (62), a shaft hole (61) is provided at the center of the body (62), and the body (62) is sleeved on the motor rotor shaft through the shaft hole (61); and blades (63) are provided on the outer wall of the body (62).

9. The submersible flow propeller according to claim 8, characterized in that: A retaining ring (5) is fixedly provided on the motor rotor shaft, one end of the flow stirring member (6) abuts against the retaining ring (5), and the other end abuts against the mechanical seal (8).

10. The submersible flow propeller according to claim 8, characterized in that: The number of the blades (63) is 2 to 3.

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