CN115822959A - Novel in turn let transition type rotor displacement pump - Google Patents

Abstract

The invention relates to a displacement pump, in particular to a novel alternative yielding type rotor displacement pump. The displacement pump is characterized in that a pump shell inlet flow channel is arranged in a left rotor connected with a pump shell, a pump shell outlet flow channel is arranged in a right rotor connected with the pump shell, and the inlet flow channel and the outlet flow channel are opposite but not connected. The rotor is rotationally connected with the pump shell and consists of a left rotor, a middle rotor and a right rotor, and the left rotor, the middle rotor and the right rotor are respectively separated by the inner space of the pump shell. The pump casing is internally provided with a front baffle and a rear baffle, a spring is arranged between the front baffle and the rear baffle and the pump casing, and a space is provided for the movement of the rotor through the extension and contraction of the spring. The cavity formed between the front baffle and the rear baffle and the rotor forms a left rotor working cavity, a middle rotor working cavity and a right rotor working cavity. The left rotor, the middle rotor and the right rotor are distributed in parallel through the inflow channel and the outflow channel and are connected with the front baffle and the rear baffle in a tangent mode.

Description

Novel in turn let transition type rotor displacement pump

Technical Field

The invention relates to a displacement pump, in particular to a novel alternative yielding type rotor displacement pump. It is suitable for conveying various fluids.

Background

The pump is a general term of a general machine, is controlled by a prime mover to drive a medium to move, and is an energy conversion device for converting the output capacity of the prime mover into medium pressure energy. Many types of fluids and fluid, gas mixtures themselves containing suspended solids can be transported by means of pumps. Generally, a variety of pumps are used for conveying various fluids, and a gear pump is one of the pumps, and although the pump is favorable for reducing the friction loss of a mechanism, the pump has the defects of large flow rate and pressure pulsation, large vibration noise, invariable displacement and the like. In addition, because the pump shell bears unbalanced radial force, the gear in the pump shell is easy to wear, the leakage is large and the sealing performance is poor in long-term operation. Is not suitable for conveying fluid containing solid particles and fluid with high volatility and low flash point, and has small flow of conveying medium. The screw pump mainly comprises a pump shell and a screw rod arranged in the pump shell. The pump has high manufacturing and processing technical requirements. The device is sensitive to viscosity change of the medium, the flow of the conveyed medium is small, the medium is conveyed in a clearance mode, and the working range is limited. There is also a rotary pump which has a higher discharge pressure but a smaller flow output than a reciprocating pump, and generally uses and delivers a small fluid. The pump discharges liquid intermittently with large flow fluctuation.

Disclosure of Invention

The invention aims to provide a novel alternately-yielding type rotor displacement pump which can overcome the defects of the prior art, effectively reduce friction, reduce loss, prolong the service life, have good sealing performance and improve the overall efficiency of the pump.

The solution is as follows: the left rotor connected with the pump shell is internally provided with a pump shell inlet channel, the right rotor connected with the pump shell is internally provided with a pump shell outlet channel, and the inlet channel and the outlet channel are opposite but not connected. The rotor is rotationally connected with the pump shell and consists of a left rotor, a middle rotor and a right rotor, and the left rotor, the middle rotor and the right rotor are respectively separated by the inner space of the pump shell. The pump casing is internally provided with a front baffle and a rear baffle, a spring is arranged between the front baffle and the rear baffle and the pump casing, and a space is provided for the movement of the rotor through the extension and contraction of the spring. The cavity formed between the front baffle and the rear baffle and the rotor forms a left rotor working cavity, a middle rotor working cavity and a right rotor working cavity. The left rotor, the middle rotor and the right rotor are distributed in parallel through the inflow channel and the outflow channel and are connected with the front baffle and the rear baffle in a tangent mode.

The left rotor is internally provided with a flow inlet channel, the left rotor is connected with a pump shell through a shaft, a front baffle and a rear baffle are respectively arranged in front of and behind the left rotor and are connected with the pump shell through springs, the front baffle and the rear baffle move through the springs, and a space provided by the movement of the spring telescopic baffles provides a space for the movement of the left rotor.

A flow outlet channel is arranged in the right rotor, the right rotor is connected with a pump shell through a shaft, a front baffle and a rear baffle are arranged in front of and behind the right rotor respectively and are connected with the pump shell through springs, the front baffle and the rear baffle move through the springs, and a space provided by the movement of the spring telescopic baffles provides a space for the movement of the right rotor.

The middle rotor is internally provided with an inflow channel, an outflow channel and a piston, a front baffle and a rear baffle are arranged in front of and behind the middle rotor respectively and are connected with the pump shell through springs, the front baffle and the rear baffle move through the springs, and a space provided by the movement of the spring telescopic baffles provides a space for the movement of the middle rotor. The piston arranged on the middle rotor is used for preventing fluid entering the inflow channel and fluid flowing out of the outflow channel from entering other spaces during the movement of the rotor. The inlet channel and the outlet channel are respectively arranged at two sides of the piston, and the movement space of the fluid is expanded or reduced according to the movement space of the intermediate rotor.

By adopting the technical scheme, the left rotor, the middle rotor and the right rotor are distributed in parallel, the contact area among the left rotor, the middle rotor and the right rotor can be increased, and the left rotor, the middle rotor and the right rotor are in tangential connection with the front baffle and the rear baffle, so that the sealing performance of the positive displacement pump can be effectively improved. The left rotor, the middle rotor and the right rotor are distributed in parallel and have the same rotating direction, and the pump shell is solid, so that the rotating body system can keep balance, and the pump has stable operation and low vibration and noise. And the flow of the displacement pump is only related to the rotating speed of the main shaft, and the inlet fluid and the outlet fluid are both conveyed along the inlet flow channel and the outlet flow channel, so that the displacement pump is convenient to use and small in occupied area. The pump can be directly connected with the generator, and has the advantages of reliable operation, convenient management and use and higher rotating speed. The pump has wide application, can convey various fluids, and can be particularly applied to the following fields:

<1> applied to internal combustion generators, hydroelectric generators, hydraulic motors, pneumatic motors or gas expanders, metering pumps and hydraulic rotating wheels, and can convert the energy of fluid into mechanical energy.

<2> applied to compressible fluid pressure pumps, comprising a fan, a compressor, an air compressor and a vacuum pump; the liquid pressure pump is applied to liquid pressure pumps, and comprises a water pump, an oil pump or a displacement pump suitable for other liquid-phase media; the method is applied to the constant-ratio flow distribution pump; the heat pump compressor is applied to a two-phase flow heat pump compressor, and comprises a two-phase flow air conditioner compressor, a two-phase flow refrigerator compressor, a two-phase flow heat pump water heater compressor and the like; the device is applied to the flow distribution booster pump of the internal combustion engine with the optimized air-fuel ratio and the constant-ratio flow distributor of the gas stove. Mechanical energy can be converted into fluid energy.

<3> can be applied to a hydraulic motor-water pump unit and can convert fluid energy into mechanical energy and then into fluid energy.

<4> applied to hydraulic speed reducers or hydraulic speed increasers, hydraulic torque converter transmission devices, and can convert mechanical energy into fluid energy and then into mechanical energy.

Drawings

Fig. 1 is a side view of a novel alternating-yield rotor displacement pump.

Fig. 2 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A in fig. 1.

Fig. 3 is a cross-sectional view taken along line B-B of fig. 2.

Fig. 4 is a cross-sectional view taken along line C-C in fig. 2.

Fig. 5 is a cross-sectional view taken along line D-D in fig. 2.

Fig. 6 is a cross-sectional view taken along line E-E in fig. 2.

Fig. 7 is a sectional view taken along line F-F in fig. 2.

Fig. 8 is a sectional view taken along line G-G in fig. 5.

Fig. 9 is a sectional view taken along line H-H in fig. 5.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings.

In fig. 1 to 9, a left rotor 7, a middle rotor 3, and a right rotor 2 are provided in a pump housing 5. The front and the back of the left rotor 7, the middle rotor 3 and the right rotor 2 are respectively provided with a front baffle 9 and a back baffle 4, the front and the back baffles are provided with a front spring space 13 and a back spring space 12, and springs 8 are arranged in the front and the back spring spaces. The left side of the displacement pump is provided with an inlet channel 6, the right side of the displacement pump is provided with an outlet channel 1, and a left rotor 7 and a right rotor 2 are respectively connected with a pump shell 5 through a pair of shafts 10.

The displacement pump is characterized in that a pump shell 5 is connected to a left rotor 7 and a right rotor 2, the left rotor 7 and the right rotor 2 are designed to be egg-shaped rotors, when the left rotor 7 and the right rotor 2 rotate, the movement of a protruding part can pull a front baffle plate 9 and a rear baffle plate 4 to move, and the movement of the front baffle plate and the rear baffle plate is mainly realized through the expansion and contraction of springs 8 placed in a front spring space 13 and a rear spring space 12. When the protruding part is rotated to the backplate 4, the spring 8 of the rear spring space 12 is contracted, and at this time, the backplate 4 is extended and contracted backward, and by this process, the backward extension of the backplate 4 provides a movement space for the interrotor 3, and along with the movement of the interrotor 3, a space for the liquid flow entering the inlet channel 6 is increased, a space for the liquid flow exiting the outlet channel 1 is decreased, and the piston 11 prevents the liquid flow from flowing to other parts when the interrotor 3 is rotated to the backplate 4. When the protruding parts of the left rotor 7 and the right rotor 2 rotate to the front baffle 9, the spring 8 of the front spring space 13 contracts, and at this time, the front baffle 9 contracts backwards, and through this process, the backward contraction of the front baffle 9 provides a movement space for the interrotor 3, and with the movement of the interrotor 3, the space for the liquid flow entering the inlet channel 6 decreases, the space for the liquid flow exiting the outlet channel 1 increases, and the piston 11 prevents the liquid flow from flowing to other parts when the interrotor 3 rotates to the front baffle 9 and the rear baffle 4. The fluid energy is converted into mechanical energy by the movement of the fluid flow in and out of the flow channel 6 and 1.

Claims (2)

1. The utility model provides a novel type rotor displacement pump lets in turn which characterized in that: the pump shell inlet channel (6) is arranged inside the left rotor (7) connected with the pump shell (5), the pump shell outlet channel (1) is arranged inside the right rotor (2) connected with the pump shell (5), the inlet channel (6) and the outlet channel (1) are opposite but not connected, a rotor rotationally connected with the pump shell is arranged inside the pump shell (5), the rotor comprises the left rotor (7), a middle rotor (3) and the right rotor (2), the left rotor (7), the middle rotor (3) and the right rotor (2) are respectively separated through the inner space of the pump shell, a front baffle (9) and a rear baffle (4) are arranged inside the pump shell, a spring (8) is arranged between the front baffle (9) and the rear baffle (4) and the pump shell, space is provided for the movement of the rotor through the expansion and contraction of the spring (8), a left rotor working cavity, a middle rotor working cavity and a right rotor working cavity are formed between the front baffle and the rotor, the left rotor (7), the middle rotor (3) and the right rotor (2) are distributed in parallel with the outlet channel, and are connected with the front baffle (9) and the rear baffle (2).

2. The novel alternating-concession type rotor displacement pump according to claim 1 is characterized in that the pump shell (5) is connected to the left rotor (7) and the right rotor (2), the left rotor (7) and the right rotor (2) are designed to be egg-shaped rotors, when the left rotor (7) and the right rotor (2) rotate, the movement of the protruding part draws the movement of the front baffle plate (9) and the rear baffle plate (4), the movement of the front baffle plate and the rear baffle plate is mainly realized by the expansion and contraction of the springs (8) placed in the front spring space (13) and the rear spring space (12), when the protruding part rotates to the rear baffle plate (4), the springs (8) in the rear spring space (12) are contracted, at the same time, the rear baffle plate (4) is expanded backwards, through the process, the backward expansion of the rear baffle plate (4) provides a movement space for the intermediate rotor (3), along with the movement of the intermediate rotor (3), the space for the liquid flow entering the flow channel (6) is increased, the space for the liquid flow channel (1) is reduced, and when the liquid flows to the intermediate baffle plate (3) is prevented from rotating, and the other liquid flows to the rear baffle plate (4); when the protruding part rotates to the front baffle (9), the spring (8) of the front spring space (13) contracts, at the same time, the front baffle (9) stretches backwards, through the process, the backward stretching of the front baffle (9) provides a movement space for the intermediate rotor (3), along with the movement of the intermediate rotor (3), the space for the liquid flow entering the inflow channel (6) is reduced, the space for the liquid flow exiting the outflow channel (1) is increased, and the piston (11) prevents the liquid flow from flowing to other parts when the intermediate rotor (3) rotates to the front baffle (9); the fluid energy is converted into mechanical energy by the movement of the liquid flow in the flow channel (6) and the flow out of the flow channel (1).

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