CN211287994U

CN211287994U - Internal flow distribution variable displacement pump

Info

Publication number: CN211287994U
Application number: CN201922398915.3U
Authority: CN
Inventors: 周承岗
Original assignee: Pan Tianteng Shenzhen Technology Co ltd
Current assignee: Pan Tianteng Shenzhen Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-08-18
Anticipated expiration: 2029-12-27

Abstract

The internal flow distribution variable displacement pump is a variable displacement pump for distributing flow in a working cavity, and comprises a cavity, a conveying device and a control device, and is characterized in that the inner cavity of the cavity is a closed annular fluid channel with an inlet and an outlet, the conveying device comprises a stator and a rotor, the stator is a magnetic or electromagnetic device fixedly arranged outside the cavity, and the stator can make unidirectional circulating motion in the inner cavity through magnetic force or ampere force; a stopping device is arranged to enable the rotor to stop at a fixed point to block the inner cavity, or a movable brake is arranged at the stopping point to block or communicate the inner cavity; the rotor in the working stroke moves from the inlet to the outlet, and the inner cavity is blocked by another rotor or a movable brake at a stopping point; the mover in the working stroke discharges fluid at the front and sucks the fluid at the rear; after a section of continuous working stroke is finished, the rotor in the working stroke and the rotor of the stopping point exchange roles or exceed the moving brake and enter the next working stroke in the same movement direction.

Description

Internal flow distribution variable displacement pump

Technical Field

The utility model relates to a positive displacement pump of joining in marriage a class in intracavity, directly drive with the magnetoelectric, the structure is simplified, light-weighted, technical field such as modularization are relevant.

Background

The reciprocating pump is divided according to the working principle, the types of the pump mainly comprise a variable displacement pump and a power pump, the variable displacement pump realizes suction and discharge functions by dynamically changing the static pressure and the volume of a working cavity, and the reciprocating pump is the main type of the pump and has the advantages of large discharge pressure, large flow and the like. In order to make the working chamber repeatedly connected and disconnected with the high-pressure and low-pressure fluid in coordination with the conversion of the working process, the reciprocating pump needs a flow distribution device, which is one of important technical links for determining the working performance of the reciprocating pump. The existing flow distribution mode mainly comprises valve flow distribution, a flow distribution plate flow distribution, shaft flow distribution, outer ring flow distribution and the like, all belong to external flow distribution, a special mechanism needs to be arranged outside a working cavity or special structural arrangement is carried out on related components, the valve flow distribution is simple and easy to implement, but has hysteresis and is difficult to adapt to high-speed operation, the valve is a quick-wear part and needs to be replaced frequently, other flow distribution devices are dynamically matched with the working cavity and are one of main friction links of a pump, the requirements on sealing performance and wear-resistant friction-reducing performance are high, only a single flow distribution function is usually provided, the resource utilization rate is low, and the complexity of the structure and the manufacturing cost are increased. The reciprocating pump mostly uses an electric motor and an internal combustion engine as prime movers, the assembly is provided with a complete prime mover structure, the integration degree with other components is lower, a special motion mechanism is also needed to convert the circular motion into the reciprocating motion, the occupied space is larger, and the weight of the reciprocating pump also influences the overall power density to a great extent. In addition, the pumping assembly of a reciprocating pump operates in a reciprocating manner, requiring a large amount of inertia to be overcome when operating at high speeds.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a positive displacement pump of joining in marriage a class is carried out to work intracavity portion, conveying assembly utilizes self and entry, the relative position relation of export to decide fluidic flow direction, inhale the in-process of arranging the job task and realize joining in marriage a class naturally in the execution, need not add special joining in marriage a class device, what adopt moreover is that magnetoelectric directly drives the mode, to a great extent has simplified the structure and has alleviateed weight and volume, the loss of overcoming motion inertia has also been reduced to the unidirectional circulation motion mode.

The inner cavity of the cavity body of the utility model is a closed annular fluid channel with an inlet and an outlet, the transmission device comprises a stator and a rotor, the stator is a magnetic or magnetoelectric device fixedly arranged outside the cavity body, and the rotor can perform unidirectional circulating motion in the inner cavity by magnetic force or ampere force; a stopping device is arranged to enable the rotor to stop at a fixed point to block the inner cavity, or a movable brake is arranged at the stopping point to block or communicate the inner cavity; the rotor in the working stroke moves from the inlet to the outlet, and the inner cavity is blocked by another rotor or a movable brake at a stopping point; the mover in the working stroke discharges fluid at the front and sucks the fluid at the rear; after a section of continuous working stroke is finished, the rotor in the working stroke and the rotor of the stopping point exchange roles or exceed the moving brake and enter the next working stroke in the same movement direction.

The utility model discloses an inner chamber is the gyration shape, and the active cell uses the internal surface of inner chamber to move as the restraint, perhaps, the inner chamber is the gyration chamber that has the inner cylinder face, and the active cell is articulated with the inner cylinder face, does the restraint around axis rotary motion with the inner cylinder face.

The utility model discloses a cross sectional shape has nonparallel straight flange or arc limit, can come compensating wear through axial or radial relative movement to extension subassembly scrap time, reduction maintenance volume or free-maintenance in the life-span.

The utility model discloses a cavity has special coil to drive opening and shutting of floodgate outward, perhaps, passes through opening and shutting of magnetic force, hydraulic pressure or atmospheric pressure mode drive floodgate by the active cell.

The rotor of the utility model has an outer cladding layer, which can play the roles of antifriction, wear resistance, sealing, corrosion resistance, collision resistance, pollution prevention or silence.

The utility model discloses a active cell has the magnetic current body sealing ring, and sealing magnetic field also is the power magnetic field of active cell simultaneously.

The utility model discloses an entry, an export of inner chamber and between them one inhale the section and one discharge section be a basic combination, and an inner chamber has a plurality of basic combinations.

The utility model discloses have the pulse remove device that can the dynamic pressure regulating, perhaps, the cavity is multicavity balance and sets up the structure, can slow down output pulsation and vibrations, perhaps, has input house steward and output house steward, can come the modularization to establish ties a plurality of cavities and supporting subassembly as required by power.

The utility model is provided with an inlet and an outlet conversion valve.

The utility model discloses have power supply unit, power generation facility, manual control device, man-machine interchange part, control part or intelligent automated control module.

Drawings

FIG. 1 is an embodiment with a mover being a free slider;

FIG. 2 is a view showing the structure of the shutter;

FIG. 3 is a flow control block diagram of the active gate;

fig. 4 is an embodiment in which the mover is a hinge rotating structure;

FIG. 5 is a cross-sectional shape of the inner cavity and the mover;

FIG. 6 is a view of the magnetic fluid seal configuration.

Detailed Description

Referring to fig. 1, the inner cavity of the cavity 7 of the present invention is a closed annular fluid passage with an inlet 3 and an outlet 6, the conveying device includes a stator 4 and two movers 2, the stator 4 is a magnetoelectric device fixedly installed outside the cavity 7, the type of the stator is a driving coil of a motor, the stator is circumferentially continuous but not hermetically distributed, the inner cavity in the action range is a working section, the movers 2 are permanent magnets which are radially magnetized, and the mover and the stator 4 can generate an ampere force through magnetoelectric induction and move circumferentially in the action range of the stator 4; a stopping coil 1 capable of generating a radial magnetic field is arranged at a gap between two end points of the stator 4, a corresponding inner cavity channel of the stopping coil is not in the action range of the stator 4, and the mover 2 passing through the position can be sucked to bear circumferential pressure when the stator is electrified, so that an annular channel is blocked between the inlet 3 and the outlet 6, and the position is a stopping point; a sensor is adopted to sense the position of the rotor 2, and an automatic control device comprising a silicon controlled circuit or a contactor is adopted to control the power-on and power-off time of the stopping coil 1; the structure of the annular channel is cyclically arranged in the clockwise direction according to the sequence of the inlet, the movement section, the outlet and the stop point, the movement section of the inner chamber being divided into a suction section and a discharge section communicating with the inlet 3 and the outlet 6, respectively. In the initial state, when one mover 2 is in the action range of the stator 4, the other mover 2 is at a stop point outside the action range; when the stator 4 and the stopping coil 1 are both electrified with direct current, one mover 2 blocks the channel, the other mover moves clockwise, and the moving mover 2 simultaneously expands the rear suction section and reduces the front discharge section, so that fluid is sucked and discharged; when the side surface of the moving rotor 2 completely covers the outlet 6, the suction and discharge process is finished, the stopping coil 1 is powered off, the moving rotor 2 pushes the rotor 2 at the stopping point to synchronously move together when the moving rotor 2 continues to move, when the front rotor 2 enters the action range of the stator 4, the rear rotor 2 reaches the stopping point, at the moment, the stopping coil 1 is powered on again, and the two rotors 2 complete the role switching and enter the next working cycle in the same direction. The circumferential length of the movers 2 and the distance between the inlet 3 and the outlet 6 are compared with each other, so that the inlet 3 and the outlet 6 are kept in a state of mutual non-communication all the time, before the inlet 3 is completely covered by one mover 2 during the synchronous movement of the two movers 2, the outlet 6 covered by the other mover 2 is not opened yet. The stator 4 may also be an accelerating coil, a magnetic track, an electric rail, a permanent magnetic bar, or another type of magnetoelectric or magnetic device, and is arranged radially, axially, or in multiple directions, and the mover 2 correspondingly adopts a matching structure type to interact with the stator 4 to generate relative motion. One annular channel can only have one group of inlets, moving sections, outlets, stop points, matched stators and rotors, and can also be distributed in a plurality of groups in series. To naturally realize flow distribution during operation of the mover, the embodiment of fig. 2 may also be adopted, in which only one mover 23 is disposed in the inner cavity of the cavity 12, the movable gate 10 may move in the radial direction along the sliding cavity 11 to block or communicate the inner cavity, the movable gate 10 blocks the channel when the mover 23 operates, when one flow is finished, the movable gate 10 is opened, and after the mover 23 overtakes the other side, the movable gate is closed, so as to enter the next flow.

In the embodiment of fig. 1, the inner cavity of the cavity 7 is in a revolution shape, and the mover 2 moves with the inner surface of the inner cavity as a constraint. The matching length of the mover 2 and the cavity 7 needs to be large enough, sliding is smooth and stable, and under the condition that the overall size is not changed, the larger matching length means smaller working distance and output flow, and in order to obtain larger flow with the smaller matching length, the rotary embodiment can adopt the structure shown in fig. 4, wherein the inner cavity of the cavity 15 is a rotary cavity with an inner cylindrical surface, and the mover 16 is hinged with the inner cylindrical surface and rotates around the central axis by being restrained by the inner cylindrical surface.

In fig. 5, the cross-sectional shape of the cavity 7 and the mover 2 is trapezoidal, and wear can be compensated for by relative axial or radial movement. After the abrasion is compensated through the relative movement, the gap between the rotor 2 and the end cover 8 is enlarged, the upper end face of the cavity 7 can be ground to have extra length for repair, the scrappage time of the assembly is prolonged, or the rotor 2 is adaptive by using a sealing device with good elasticity, so that the maintenance amount is reduced, and even the maintenance-free effect in the service life is realized. The cross-sectional shape may be a polygon having all its straight sides not parallel, or may be a shape with an arc line, such as a semicircular shape with the arc line directed downward.

In the embodiment of fig. 2, a special coil is arranged outside the cavity 12 to drive the movable brake 10 to open and close in the radial direction, or the movable brake is driven by the mover 13 through magnetic force, an elastic device is arranged in the sliding cavity 11 to apply an outward radial force to the movable brake 10 to enable the movable brake to be in a normally closed state, magnets enabling the movable brake 10 and the movable brake 13 to be mutually exclusive are respectively embedded on the movable brake 10 and the movable brake 13, when the movable brake 10 is close to the movable brake, the radial component of the repulsive force can cause the shutter 10 to retract inside the sliding chamber 11, as also shown in figure 3, the pumped fluid is used as working medium to drive the opening and closing of the movable brake 10-in a multi-cavity or multi-working-section composite structure, a cavity 12 is provided with a fluid channel 14 leading from a sliding cavity 11 to an inner cavity, the inlet or outlet of the inner cavity can be blocked or opened by the side surface of the rotor 13, and the sliding cavity 11 can be communicated with the front high-pressure area or the rear low-pressure area of different rotors 13 at different times along with the movement of the rotor 13.

In fig. 1, the inside of the mover 2 is made of magnetic material, and the outside is wrapped by a sealing outer cladding, which is of a type including but not limited to nylon, teflon and the like, and can play a role in friction reduction, wear resistance, sealing, corrosion prevention, collision prevention, pollution prevention or silencing when used alone or in combination.

In the embodiment of fig. 1, the mover 2 is a magnetic fluid sealing structure, which is formed as shown in fig. 6, in which an axially magnetized or radially magnetized permanent magnet 24 is fixed at the middle section of a base 23, permanent magnet rings 22 are fixed at the front and rear ends of the base 23 in the movement direction, the shape of the ring is matched with the shape of the section of an inner cavity, the magnetization direction of the ring is perpendicular to the annular contour line, and a magnetic fluid sealing ring 20 is connected to an annular groove at the outer side. The magnetic fluid sealing ring 20 is magnetized by the permanent magnet ring 22 and extends to the periphery to be directly contacted with the inner cavity of the cavity 7 to form a sealing layer. The magnetic fields of the permanent magnet ring 22 and the magnetofluid sealing ring 20 can also be induced to the stator 4 to generate power.

Referring to fig. 1, the chamber of the present embodiment has only one inlet 3, one outlet 6 and one suction section and one discharge section formed by the mover 2, which are a basic combination, and a chamber may have a plurality of such basic combinations arranged in series.

On the basis of the embodiment of fig. 1, an air pressure device capable of dynamically regulating pressure is arranged at the outlet 6 to slow down output pulse, or a multi-cavity multi-phase balanced distribution structure is adopted to slow down output pulse and vibration, or an input main pipe and an output main pipe are arranged, and a plurality of cavities and matched components thereof are modularly connected in series according to power requirements.

In fig. 1, a switching valve is provided outside the chamber to connect the inlet 3 and the outlet 6 so that the pump can work in reverse.

Claims

1. The internal flow distribution variable displacement pump comprises a cavity, a conveying device and a control device, and is characterized in that an inner cavity of the cavity is a closed annular fluid channel with an inlet and an outlet, the conveying device comprises a stator and a rotor, the stator is a magnetic or magnetoelectric device fixedly arranged outside the cavity, and the rotor can perform unidirectional circulating motion in the inner cavity through magnetic force or ampere force; a stopping device is arranged to enable the rotor to stop at a fixed point to block the inner cavity, or a movable brake is arranged at the stopping point to block or communicate the inner cavity; the rotor in the working stroke moves from the inlet to the outlet, and the inner cavity is blocked by another rotor or a movable brake at a stopping point; the mover in the working stroke discharges fluid at the front and sucks the fluid at the rear; after a section of continuous working stroke is finished, the rotor in the working stroke and the rotor of the stopping point exchange roles or exceed the moving brake and enter the next working stroke in the same movement direction.

2. The internal distribution flow variable displacement pump according to claim 1, wherein the inner chamber is a rotary shape, and the mover moves with the inner surface of the inner chamber as a constraint, or the inner chamber is a rotary chamber with an inner cylindrical surface, and the mover is hinged to the inner cylindrical surface and constrained to rotate around the central axis with the inner cylindrical surface.

3. An internal distribution positive displacement pump according to claim 1, wherein the cross-sectional shape has non-parallel straight or arcuate sides, and wherein relative axial or radial movement compensates for wear, thereby increasing component wear time, reducing maintenance, or being maintenance free over its lifetime.

4. The internal distribution flow variable displacement pump according to claim 1, 2 or 3, wherein the cavity has a special coil to drive the opening and closing of the movable brake, or the movable brake is driven by the rotor through magnetic force, hydraulic pressure or pneumatic pressure.

5. The internal distribution flow variable displacement pump according to claim 4, wherein the rotor has an outer cladding layer for friction reduction, wear resistance, sealing, corrosion resistance, collision resistance, pollution prevention or silencing.

6. An internal distribution positive displacement pump according to claim 1, 2, 3 or 5, wherein the mover carries a magnetic fluid sealing ring, and the sealing magnetic field is also the motive magnetic field of the mover.

7. An internally ported positive displacement pump according to claim 6 wherein an inlet, an outlet and a suction and a discharge section therebetween of the chamber are in a basic group, and a chamber has a plurality of basic groups.

8. The internal distribution variable displacement pump of claim 1, 2, 3, 5 or 7, wherein the internal distribution variable displacement pump is provided with a pulse eliminating device capable of dynamically adjusting pressure, or the cavity is a multi-cavity balance structure capable of reducing output pulsation and vibration, or an input manifold and an output manifold are provided, and a plurality of cavities and matching components thereof can be modularly connected in series according to power requirements.

9. An internally ported positive displacement pump according to claim 8 having inlet and outlet switching valves.

10. An internal distribution positive displacement pump according to claim 1, 2, 3, 5, 7 or 9, characterized by a power supply, a power generation, a manual control, a human-machine communication, a monitoring or an intelligent automation control module.