CN209818324U - Special electric pump for hydraulic wrench - Google Patents

Abstract

The utility model discloses a special electric pump for hydraulic wrenches, which comprises a shell, wherein one end of the shell is provided with an oil inlet, the bottom end of the shell is provided with an oil outlet, a filter screen is arranged in the shell at one side of the oil inlet, the right side of the filter screen is provided with an impeller, the right end of the impeller is connected with an impeller bracket, the impeller bracket is sleeved with a bearing A, the right end of the bearing A is connected with a rotating shaft, the right end of the rotating shaft is connected with the output end of a motor through an elastic coupling, a bearing seat is arranged on the inner wall of the shell, a bearing B is arranged in the bearing seat, the bearing B is sealed with the rotating shaft through a sealing framework, the shell is connected with the motor through a pump seat, the special electric pump has reasonable design and simple structure, polluting the motor and having good sealing performance.

Description

Special electric pump for hydraulic wrench

Technical Field

The utility model relates to an electric pump especially relates to a special electric pump of hydraulic wrench, relates to the electric pump field.

Background

An electrically-powered hydraulic pump is a hydraulic component that provides pressurized fluid for a hydraulic drive. The hydraulic wrench is a conventional hydraulic torque wrench kit and generally comprises a hydraulic torque wrench body, a hydraulic torque wrench special pump station, a duplex high-pressure hose and a high-strength heavy sleeve. In the installation, debugging, maintenance and other constructions of industries such as petrochemical industry, ocean chemical industry, electric power, shipbuilding, machinery, coal, pharmacy, cement, nuclear power and the like, the hydraulic wrench has irreplaceable effects of other tools for the installation and the disassembly of bolts with large specifications or torque value requirements, is a very important tool, has higher equipment major accident probability due to bolt problems, and therefore has strict requirements under most conditions and is difficult to meet the requirements under the manual condition, the hydraulic wrench is convenient and flexible to use, the provided torque is huge and very accurate, and the high-precision fastening of the bolts with large specifications can be realized.

But the current electric pump for hydraulic pressure spanner leakproofness has great problem, often leads to during fluid gets into the motor by a small amount, has reduced the life of motor, leads to the motor to damage even, greatly reduced the work efficiency of electric pump, and most of electric pumps for hydraulic pressure spanner often the structure is more complicated, and the wholeness is relatively poor, carries inconveniently.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a special electric pump of hydraulic wrench can solve the problem that the oil leak of the special electric pump of the existing hydraulic wrench and the structure are too complicated, the unity is poor.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a special electric pump of hydraulic wrench, includes the casing, casing one end sets up the oil inlet, the bottom of casing is provided with the oil-out, the inside filter screen that is provided with of casing of oil inlet one side, the filter screen right side is provided with the impeller, the impeller right-hand member is connected with the impeller support, impeller support cup has connect bearing A outward, bearing A right-hand member is connected with the rotation axis, the rotation axis right-hand member passes through elastic coupling with the output of motor and is connected, the last bearing frame that is provided with of shells inner wall, be provided with bearing B in the bearing frame, it is sealed through sealed skeleton between bearing B and the rotation axis, the casing.

Preferably, the left end of the oil inlet is connected with an oil tank.

Preferably, a pump nozzle is arranged on the shell between the filter screen and the impeller.

Preferably, the right end of the motor is connected with a protection frame.

Preferably, a sealing ring is arranged between the rotating shaft and the sealing framework.

Preferably, the right end of the protection frame is provided with a control box, and the control box is connected with the motor.

Compared with the prior art, the utility model discloses the beneficial effect that can reach is: the utility model discloses the rotation axis both ends are supported by the bearing, and it is sealed to be equipped with the skeleton type in the upper end bearing frame, can prevent that liquid from getting into the motor part, pollutes the motor, has good sealing performance, through setting up the fender bracket, can protect the motor.

Drawings

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

Wherein: 1. a housing; 2. an oil inlet; 3. an oil outlet; 4. a filter screen; 5. an impeller; 6. an impeller holder; 7. a bearing A; 8. a rotating shaft; 9. a motor; 10. an elastic coupling; 11. a bearing seat; 12. a bearing B; 13. sealing the framework; 14. a pump mount; 15. an oil tank; 16. a protection frame; 17. a control box; 18. and (5) sealing rings.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Referring to fig. 1, the electric pump special for the hydraulic wrench comprises a housing 1, wherein an oil inlet 2 is formed in one end of the housing 1, an oil outlet 3 is formed in the bottom end of the housing 1, a filter screen 4 is arranged inside the housing 1 on one side of the oil inlet 2, an impeller 5 is arranged on the right side of the filter screen 4, an impeller support 6 is connected to the right end of the impeller 5, a bearing a7 is sleeved outside the impeller support 6, the right end of the bearing a7 is connected with a rotating shaft 8, the right end of the rotating shaft 8 is connected with the output end of a motor 9 through an elastic coupling 10, a bearing seat 11 is arranged on the inner wall of the housing 1, a bearing B12 is arranged in the bearing seat 11, the bearing B12 is sealed with the rotating shaft 8 through a sealing framework.

Further, the left end of the oil inlet 2 is connected with an oil tank 15 for supplying oil to the electric pump.

Further, a pump nozzle is arranged on the shell 1 between the filter screen 4 and the impeller 5, and air is discharged to avoid overlarge air pressure in the pump.

Further, the right end of the motor 9 is connected with a protection frame 16 for protecting the electric pump.

Further, a control box 17 is arranged at the right end of the protection frame 16, the control box 17 is connected with the motor 9, and the control box 17 controls the motor 9 to operate so as to control the operation of the hydraulic wrench.

Further, a sealing ring 18 is arranged between the rotating shaft 8 and the sealing framework 13, so that the sealing performance of the device is improved, and oil is prevented from entering the motor 9.

The working principle is as follows: when the hydraulic oil pump is used, the oil outlet pipe is connected with a hydraulic wrench, the starting motor 9 is controlled by operating the control panel on the control box 17, oil in the oil tank 15 flows into the impeller 5 through the oil inlet 2, the impeller 5 is driven by the rotating shaft 8 to rotate at a high speed, the oil among the blades rotates, under the action of centrifugal force, the oil is thrown to the outer edge from the center of the impeller 5 and obtains energy, the oil leaves the outer edge of the impeller 5 at a high speed and enters the volute casing, in the volute casing, the liquid decelerates due to gradual expansion of a flow channel, partial kinetic energy is converted into static pressure, and finally the oil flows into the oil outlet pipe from the oil outlet 3 at a high pressure and is sent to the hydraulic wrench to provide kinetic energy for the.

The embodiments of the present invention are not limited to the above embodiments, and according to the contents of the above embodiments of the present invention, the above preferred embodiments can also make modifications, replacements or combinations of other forms by using conventional technical knowledge and conventional means in the field without departing from the basic technical idea of the present invention, and the obtained other embodiments all fall within the scope of the present invention.

Claims (6)

1. The electric pump special for the hydraulic wrench comprises a shell (1) and is characterized in that one end of the shell (1) is provided with an oil inlet (2), the bottom end of the shell (1) is provided with an oil outlet (3), a filter screen (4) is arranged inside the shell (1) on one side of the oil inlet (2), an impeller (5) is arranged on the right side of the filter screen (4), the right end of the impeller (5) is connected with an impeller support (6), a bearing A (7) is sleeved outside the impeller support (6), the right end of the bearing A (7) is connected with a rotating shaft (8), the right end of the rotating shaft (8) is connected with the output end of a motor (9) through an elastic coupling (10), a bearing seat (11) is arranged on the inner wall of the shell (1), a bearing B (12) is arranged in the bearing seat (11), and the bearing B (12) and the rotating shaft (, the shell (1) is connected with the motor (9) through a pump seat (14).

2. The electric pump special for hydraulic wrenches, as recited in claim 1, characterized in that the left end of said oil inlet (2) is connected with an oil tank (15).

3. The electric pump special for hydraulic wrenches, as recited in claim 1, characterized in that a pump nozzle is arranged on the housing (1) between the filter screen (4) and the impeller (5).

4. An electric pump as claimed in claim 1, characterized in that a protective frame (16) is connected to the right end of the electric motor (9).

5. An electric pump special for a hydraulic wrench as claimed in claim 4, characterized in that a control box (17) is arranged at the right end of the protection frame (16), and the control box (17) is connected with the motor (9).

6. An electric pump as claimed in claim 4, characterized in that a sealing ring (18) is arranged between the rotating shaft (8) and the sealing frame (13).