CN213981158U - Electromagnetic oil pump - Google Patents

Abstract

The utility model relates to an electromagnetic type oil pump, be equipped with oil feed passageway, check valve installation cavity, circulation chamber and solenoid valve installation cavity on the pump body, be equipped with contact passageway one between check valve installation cavity and the oil feed passageway, and be equipped with contact passageway two between the solenoid valve installation cavity, and be equipped with contact passageway three between the circulation chamber, be equipped with contact passageway four between circulation chamber and the solenoid valve installation cavity; the oil pump is characterized in that two one-way valves are arranged in the one-way valve mounting cavity, the two-way electromagnetic valve is arranged on the electromagnetic valve mounting cavity, and the two-way electromagnetic valve is matched with the two one-way valves to suck and push oil liquid so as to replace the conventional hydraulic pump, so that the volume of the oil pump can be greatly reduced, the production cost of the oil pump is reduced, and the oil pump has the advantages of compact structure, low cost, high pump pressure and the like; the pressure stabilizing valve and the pressure regulating valve are designed on the pump body, so that the output pressure of oil is stable and controllable, and the safety and the stability of the oil pump are improved.

Description

Electromagnetic oil pump

Technical Field

The utility model relates to an oil pump technical field especially relates to an electromagnetic type oil pump.

Background

In the prior art, an oil pump generally adopts a diesel engine or an electric motor to drive a plunger, a gear, a blade and the like to do linear or circular motion, so that liquid can be pumped in and pushed out. However, such an oil pump structure has disadvantages of large volume and high cost, and is not suitable for the trend of system miniaturization and cost reduction.

Based on this, the present disclosure is thus directed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electromagnetic type oil pump for reduce the oil pump volume, reduce the manufacturing cost of oil pump.

In order to achieve the above purpose, the technical solution of the present invention is as follows:

an electromagnetic type oil pump comprises a pump body, wherein an oil inlet channel, a one-way valve installation cavity, a circulation cavity and an electromagnetic valve installation cavity are arranged on the pump body, a first communication channel is arranged between the one-way valve installation cavity and the oil inlet channel, a second communication channel is arranged between the one-way valve installation cavity and the electromagnetic valve installation cavity, a third communication channel is arranged between the one-way valve installation cavity and the circulation cavity, and a fourth communication channel is arranged between the circulation cavity and the electromagnetic valve installation cavity;

an oil inlet check valve and an oil outlet check valve are arranged in the check valve mounting cavity, an inlet of the oil inlet check valve is communicated with the first communication channel, an outlet of the oil inlet check valve is communicated with the second communication channel, an inlet of the oil outlet check valve is communicated with the second communication channel, and an outlet of the oil outlet check valve is communicated with the third communication channel;

the electromagnetic valve installation cavity is provided with an outlet valve seat and a two-way electromagnetic valve, the two-way electromagnetic valve comprises an upper movable iron core, a lower movable iron core and an oil outlet channel communicated with the communication channel IV, the lower movable iron core is fixedly connected with a plunger, and a plunger sleeve in clearance fit with the plunger is sleeved outside the plunger; the plunger sleeve is clamped in the electromagnetic valve installation cavity, and the electromagnetic valve installation cavity forms a variable cavity communicated with the communication channel II through the plunger sleeve and the plunger; an oil outlet communicated with the oil outlet channel is formed in the outlet valve seat, and an oil outlet valve plug used for opening and closing the oil outlet is fixed on the upper movable iron core.

Furthermore, the two-way solenoid valve still includes quiet iron core, goes out the passageway and runs through upper movable iron core, quiet iron core and lower movable iron core.

Furthermore, a silencing pad is arranged between the static iron core and the upper movable iron core.

And the circulation cavity is provided with a pressure stabilizing valve mounting opening connected with the pressure stabilizing valve seat, and the energy accumulator assembly is right opposite to the pressure stabilizing valve mounting opening.

Furthermore, the pump body is provided with a pressure regulating valve installation cavity, a fifth communication channel is arranged between the pressure regulating valve installation cavity and the circulation cavity, a sixth communication channel is arranged between the pressure regulating valve installation cavity and the oil inlet channel, and a pressure regulating valve is arranged in the pressure regulating valve installation cavity.

Further, the pressure regulating valve comprises a pressure regulating bolt, a pressure regulating spring, a pressure regulating valve seat and pressure regulating valve port rubber, the pressure regulating bolt is in threaded connection with the pressure regulating valve installation cavity, the threaded connection end of the pressure regulating bolt is of a hollow structure with an opening at one end, the pressure regulating valve seat, the pressure regulating valve port rubber and the pressure regulating spring are located in the hollow cavity of the pressure regulating bolt, and the pressure regulating valve port rubber is blocked on the connecting channel five through the pressure regulating valve seat and the pressure regulating spring.

Furthermore, a sealing screw installation cavity is arranged on the pump body, a communication channel seven is arranged between the sealing screw installation cavity and the circulation cavity, an air release hole is formed in the side wall of the sealing screw installation cavity, a sealing screw for opening and closing the air release hole is connected to the inner thread of the sealing screw installation cavity, and air in the oil discharge way is discharged by utilizing the opening and closing of the sealing screw.

Furthermore, the oil inlet check valve comprises an oil inlet check valve seat, an oil inlet check valve plug and an oil inlet check valve spring, the oil outlet check valve comprises an oil outlet check valve seat, an oil outlet check valve plug, an oil outlet check valve spring and a spring seat, the oil inlet check valve seat and the oil outlet check valve seat are respectively provided with an inlet and an outlet, the oil inlet check valve plug is used for opening and closing the inlet on the oil inlet check valve seat, and the oil outlet check valve plug is used for opening and closing the inlet on the oil outlet check valve seat;

the oil inlet check valve and the oil outlet check valve are coaxially arranged, the oil inlet check valve spring is abutted between the oil inlet check valve plug and the oil outlet check valve seat, and the oil outlet check valve spring is abutted between the oil outlet check valve plug and the spring seat.

The utility model has the advantages that:

1. the oil pump has the advantages that the oil pump is compact in structure, low in cost, high in pumping pressure and the like;

2. the pressure stabilizing valve and the pressure regulating valve are designed on the pump body, so that the output pressure of oil is stable and controllable, and the safety and the stability of the oil pump are improved.

Drawings

Fig. 1 is a schematic three-dimensional structure in an embodiment of the present invention;

FIG. 2 is a schematic three-dimensional structure of a pump body according to an embodiment;

FIG. 3 is a schematic view of the structure of FIG. 2 from another perspective;

FIG. 4 is a schematic sectional view of FIG. 2;

FIG. 5 is a schematic side view of FIG. 1;

FIG. 6 is a schematic cross-sectional view C-C of FIG. 5;

FIG. 7 is a schematic sectional view A-A of FIG. 5;

FIG. 8 is a schematic cross-sectional view B-B of FIG. 5;

FIG. 9 is a schematic diagram showing the construction of movable and stationary cores in the solenoid valve according to the embodiment;

FIG. 10 (a) is a schematic structural view of a lower plunger in the embodiment;

FIG. 10 (b) is a schematic view showing the structure of a stationary core in the embodiment;

FIG. 10 (c) is a schematic structural diagram of an upper movable core in the embodiment;

FIG. 11 (a) is a schematic top view of FIG. 10 (a);

FIG. 11 (b) is a schematic top view of the upper movable core in FIG. 10 (c)

Description of the reference symbols

1, a pump body, 11, 12, 13, 14, 15, 16, 17, 18, 19, 110, 111, 112, 113, 114, 115 and 116 variable cavities;

2, a two-way electromagnetic valve, 21 upper movable iron core, 22 static iron core, 23 lower movable iron core, 24 movable iron core return spring, 25 oil outlet channel, 26 oil outlet valve plug and 27 silencing pad;

3, a 31-oil inlet one-way valve seat, a 32-oil inlet one-way valve plug, 33-oil inlet one-way valve springs, 34-oil inlet one-way valve inlets and 35-oil inlet one-way valve outlets;

4 oil outlet one-way valve, 41 oil outlet one-way valve seat, 42 oil outlet one-way valve plug, 43 oil outlet one-way valve spring, 44 oil outlet one-way valve inlet, 45 oil outlet one-way valve outlet, 46 spring seat;

5, a pressure stabilizing valve, 51, a pressure stabilizing valve seat and 52 an energy storage device;

6 pressure regulating valve, 61 pressure regulating bolt, 62 pressure regulating spring and 63 pressure regulating rubber;

7 sealing screws; 8 outlet valve seats, 81 oil outlets; 9 plunger and 91 plunger sleeve.

Detailed Description

The present invention will be described in further detail with reference to examples.

The embodiment provides an electromagnetic type oil pump, including the pump body 1, as shown in fig. 2 to 4, be equipped with oil feed passageway 18, check valve installation cavity 19, circulation chamber 110 and solenoid valve installation cavity 111 on the pump body 1, be equipped with contact passageway 11 between check valve installation cavity 19 and the oil feed passageway 18, and be equipped with contact passageway two 12 between the solenoid valve installation cavity 111, and be equipped with contact passageway three 13 between the circulation chamber 110, be equipped with contact passageway four 14 between circulation chamber 110 and the solenoid valve installation cavity 111. Be equipped with oil feed check valve 3 and oil outlet check valve 4 in the check valve installation cavity 19, the import and the first 11 intercommunications of contact passageway of oil feed check valve, the export and the second 12 intercommunications of contact passageway of oil feed check valve, the import and the second 12 intercommunications of contact passageway of oil outlet check valve, the export and the third 13 intercommunications of contact passageway of oil outlet check valve.

As shown in fig. 6, the solenoid valve installation cavity 111 is provided with an outlet valve seat 8 and a two-way solenoid valve 2, the two-way solenoid valve 2 includes an upper movable iron core 21, a stationary iron core 22, a coil assembly, a lower movable iron core 23, and an oil outlet channel 25 communicated with the communication channel four 14, and the outlet valve seat 8 is fixed on the coil assembly. One end of the lower movable iron core 23, which is far away from the stationary iron core 22, is fixedly connected with a plunger 9, a plunger sleeve 91 in clearance fit with the plunger 9 is sleeved outside the plunger 9, the plunger sleeve 91 is clamped in an electromagnetic valve installation cavity 111, and the electromagnetic valve installation cavity 111 forms a variable cavity 116 communicated with the second communication channel 12 through the plunger sleeve 91 and the plunger 9. And movable iron core return springs 24 are arranged between the static iron core 22 and the upper movable iron core 21, between the lower movable iron core 23 and the plunger sleeve 91, so as to facilitate resetting. An oil outlet 9 communicated with the oil outlet channel 25 is arranged on the outlet valve seat 8, and an oil outlet valve plug 26 for opening and closing the oil outlet 9 is fixed on the upper movable iron core 21. In addition, a silencing pad 27 is arranged between the static iron core 22 and the upper movable iron core 21 to reduce the impact sound before the static iron core 22 and the upper movable iron core 21 and reduce the noise of the oil pump.

As shown in fig. 9 to 11, in order to make the structure more reasonable, the oil outlet channel 25 of the present embodiment penetrates through the upper movable iron core 21, the stationary iron core 22 and the lower movable iron core 23, and as shown in fig. 10 and 11, the upper movable iron core 21, the lower movable iron core 23 and the stationary iron core 22 are all hollow structures with openings at two ends. As shown in fig. 11 (a), the lower movable iron core 23 has a lower end surface, which is centrally used to fix the plunger 9, and has an opening formed along the circumferential direction of the plunger 9 for oil suction; as shown in fig. 10 (c), the upper movable iron core 21 has an upper end surface, which is provided with an oil outlet valve plug 26 at the middle portion and is open at the circumferential opening of the oil outlet valve plug 26 for the oil to be pushed out.

As shown in fig. 7, the oil inlet check valve 3 includes an oil inlet check valve seat 31, an oil inlet check valve plug 32 and an oil inlet check valve spring 33, the oil outlet check valve 4 includes an oil outlet check valve seat 41, an oil outlet check valve plug 42, an oil outlet check valve spring 43 and a spring seat 46, the oil inlet and outlet check valve seats 31 and 41 are both provided with inlets and outlets, the oil inlet check valve plug 32 is used for opening and closing an inlet on the oil inlet check valve seat 31, and the oil outlet check valve plug 42 is used for opening and closing an inlet on the oil outlet check valve seat 41. The oil inlet check valve 3 and the oil outlet check valve 4 are coaxially arranged, the oil inlet check valve spring 33 is abutted between the oil inlet check valve plug 32 and the oil outlet check valve seat 41, and the oil outlet check valve spring 43 is abutted between the oil outlet check valve plug 41 and the spring seat 46.

As shown in fig. 1 and 5, which are schematic views illustrating the assembly of the oil pump, the oil pump of the present embodiment operates as follows:

the oil inlet passage 18 is connected with an oil inlet joint, oil flows in from the oil inlet joint and flows to the oil inlet one-way valve inlet 34 along the oil inlet passage 18 and the communication passage I11, the two-way electromagnetic valve 2 is electrified, the coil assembly enables the static iron core 22 to generate magnetism, the static iron core 22 attracts the upper moving iron 21 and the lower moving iron 23, the lower moving iron core 23 moves upwards to drive the plunger 9 to move upwards in the plunger sleeve 91, the space of the variable cavity 116 is enlarged, the oil pressure at the oil inlet one-way valve outlet 35 is reduced, the oil at the oil inlet one-way valve inlet 34 overcomes the jacking force of the oil inlet one-way valve spring 33 and jacks the oil inlet one-way valve plug 32 under the action of the atmospheric pressure, the oil can pass through the oil inlet one-way valve outlet 35 (as can be seen from the figure, the oil inlet one-way valve 3 and the oil outlet one-way valve 4 are arranged in the one-way valve installation cavity 19, the two parts are separated by adopting a sealing ring between, The second connecting channel 12 enters the variable cavity 116, and at the moment, because the variable cavity 116 is expanded, the oil pressure at the inlet 44 of the oil outlet one-way valve cannot push the oil outlet one-way valve plug 41;

when the two-way electromagnetic valve 2 is powered off, the static iron core 22 loses magnetic force, the plunger 9 and the lower movable iron core 23 reset under the action of the movable iron core return spring 24, the variable cavity 116 becomes small, oil in the variable cavity 116 is pressed back by an original circuit, and at the moment, under the action of oil pressure and the return spring, the oil inlet one-way valve plug 32 resets to plug the oil inlet one-way valve inlet 34; at the moment, as the oil pressure at the inlet 44 of the oil outlet one-way valve is increased, the oil outlet one-way valve plug 42 is jacked open, so that the oil enters the circulation cavity 110 after passing through the inlet 44 of the oil outlet one-way valve, the outlet 45 of the oil outlet one-way valve and the third communication channel 13 in sequence;

the oil in the circulation chamber 110 enters the solenoid valve installation chamber 111 through the connection passage four 14 under the action of oil pressure (as can be seen from the figure, the lower part of the solenoid valve installation chamber 111 is blocked by the plunger sleeve 91, so that the oil entering the solenoid valve installation chamber 111 from the circulation chamber 110 does not flow back to the variable chamber 116), and continues to enter the oil outlet passage 25 (flows in from the opening of the lower end face of the lower movable iron core 23) under the action of oil pressure until reaching the oil outlet valve plug 26 (flows out from the opening of the upper end face of the upper movable iron core 21). When the static iron core 22 does not attract the upper movable iron core 21, the upper movable iron core 21 is jacked up under the action of the movable iron core return spring 24, at the moment, the oil outlet valve plug 26 just plugs the oil outlet 9, and oil cannot flow out; when the stationary iron core 22 attracts the upper movable iron core 21, the upper movable iron core 21 can move downwards against the acting force of the movable iron core return spring 24, so that the valve plug is far away from the oil outlet 9, and after the oil outlet 9 is opened, oil is sprayed out from the oil outlet 9 under the action of oil pressure.

Through the cooperation of the two one-way valves and the two-way electromagnetic valve 2, the oil pressure can be regularly sucked and pushed out to replace a hydraulic pump, but the suction of the two-way electromagnetic valve 2 has a pulse effect, so that the output of oil has instability, and in order to solve the defect, as shown in fig. 7, the embodiment further comprises a pressure stabilizing valve 5, wherein the pressure stabilizing valve 5 comprises a pressure stabilizing valve seat 51, an energy storage assembly 52 is arranged in the pressure stabilizing valve seat 51, and the energy storage assembly 52 is generally made of materials with elastic deformation functions, such as rubber. A pressure stabilizing valve mounting opening 114 connected with the pressure stabilizing valve seat 51 is formed in the circulation cavity 110, the energy accumulator assembly 52 is opposite to the pressure stabilizing valve mounting opening 114, when the oil pressure is too large, the pressure stabilizing valve 5 is extruded, so that the energy accumulator assembly 52 is deformed, and the space of the circulation cavity 110 is enlarged in the deformation process of the energy accumulator assembly 52, so that the effect of reducing the oil pressure is achieved; on the contrary, when the oil pressure is too small, the accumulator assembly 52 is reset to reduce the space of the circulation chamber 110, thereby achieving the effect of increasing the oil pressure.

Because the hydraulic pump has different requirements for output pressure due to different use occasions, the hydraulic pump is provided with a pressure regulating valve 6, as shown in fig. 7, in this embodiment, a pressure regulating valve mounting cavity 113 is provided on the pump body 1, a communication channel five 15 is provided between the pressure regulating valve mounting cavity 113 and the circulation cavity 110, a communication channel six 16 is provided between the pressure regulating valve mounting cavity 113 and the oil inlet channel 18, the pressure regulating valve 6 is provided in the pressure regulating valve mounting cavity 113, the pressure regulating valve 6 comprises a pressure regulating bolt 61, a pressure regulating spring 62, a pressure regulating valve seat and a pressure regulating valve port rubber 63, the pressure regulating bolt 61 is screwed in the pressure regulating valve mounting cavity 113, the screwed end of the pressure regulating bolt 61 is a hollow structure with one open end, the pressure regulating valve seat, the pressure regulating valve port rubber 63 and the pressure regulating spring 62 are located in the hollow cavity of the pressure regulating bolt 61, the pressure regulating valve port rubber 63 is blocked on the communication passage five 15 by the pressure regulating spring 62. When the oil pressure is smaller than the set range, after the oil passes through the connecting channel five 15, the hydraulic pressure acting on the pressure regulating valve port rubber 63 is smaller than the elastic force of the pressure regulating spring 62, the pressure regulating valve port rubber 63 is pushed by the spring force to move towards the valve port, and the pressure relief amount is reduced, so that the outlet pressure is increased to the set range; when the oil pressure exceeds the set range, after the oil passes through the fifth communication channel 15, the pressure adjusting rubber 63 is pushed open by overcoming the spring force, the pressure relief amount is increased, the outlet pressure is reduced to the set range, and the oil flowing into the pressure regulating valve mounting cavity 113 returns to the oil inlet channel 18 through the sixth communication channel 16.

The oil pump has the air at the time of just beginning to work, influences the pressure stability of oil pump and can not produce oil even the pump, as shown in fig. 7 and 8, this embodiment is equipped with sealing screw installation cavity 115 on the pump body 1, is equipped with contact passageway seven 17 between sealing screw installation cavity 115 and the circulation chamber 110, has seted up air bleed hole 112 on the lateral wall of sealing screw installation cavity 115, sealing screw installation cavity 115 internal thread connection has the sealing screw 7 that is used for opening and close air bleed hole 112. When the air needs to be exhausted, the air release hole 112 can be opened by unscrewing the sealing screw 7, so that the air is exhausted. In addition, the bleed hole 112 can also be used to measure the output pressure of the oil pump at any time.

The above-mentioned embodiments are merely illustrative of the inventive concept and are not intended to limit the scope of the invention, which is defined by the claims and the insubstantial modifications of the inventive concept can be made without departing from the scope of the invention.

Claims (8)

1. An electromagnetic oil pump, characterized in that: the electromagnetic valve circulation pump comprises a pump body, wherein an oil inlet channel, a one-way valve installation cavity, a circulation cavity and an electromagnetic valve installation cavity are arranged on the pump body, a first communication channel is arranged between the one-way valve installation cavity and the oil inlet channel, a second communication channel is arranged between the one-way valve installation cavity and the electromagnetic valve installation cavity, a third communication channel is arranged between the one-way valve installation cavity and the circulation cavity, and a fourth communication channel is arranged between the circulation cavity and the electromagnetic valve installation cavity;

an oil inlet check valve and an oil outlet check valve are arranged in the check valve mounting cavity, an inlet of the oil inlet check valve is communicated with the first communication channel, an outlet of the oil inlet check valve is communicated with the second communication channel, an inlet of the oil outlet check valve is communicated with the second communication channel, and an outlet of the oil outlet check valve is communicated with the third communication channel;

the electromagnetic valve installation cavity is provided with an outlet valve seat and a two-way electromagnetic valve, the two-way electromagnetic valve comprises an upper movable iron core, a lower movable iron core and an oil outlet channel communicated with the communication channel IV, the lower movable iron core is fixedly connected with a plunger, and a plunger sleeve in clearance fit with the plunger is sleeved outside the plunger; the plunger sleeve is clamped in the electromagnetic valve installation cavity, and the electromagnetic valve installation cavity forms a variable cavity communicated with the communication channel II through the plunger sleeve and the plunger; an oil outlet communicated with the oil outlet channel is formed in the outlet valve seat, and an oil outlet valve plug used for opening and closing the oil outlet is fixed on the upper movable iron core.

2. The electromagnetic oil pump according to claim 1, characterized in that: the bidirectional electromagnetic valve further comprises a static iron core, and the oil outlet channel penetrates through the upper movable iron core, the static iron core and the lower movable iron core.

3. The electromagnetic oil pump according to claim 2, characterized in that: and a silencing pad is arranged between the static iron core and the upper movable iron core.

4. The electromagnetic oil pump according to claim 1, characterized in that: the pressure stabilizing valve comprises a pressure stabilizing valve seat, an energy accumulator assembly is arranged in the pressure stabilizing valve seat, a pressure stabilizing valve mounting opening connected with the pressure stabilizing valve seat is formed in the circulation cavity, and the energy accumulator assembly is right opposite to the pressure stabilizing valve mounting opening.

5. The electromagnetic oil pump according to claim 1, characterized in that: the pressure regulating valve is characterized in that a pressure regulating valve mounting cavity is arranged on the pump body, a connecting channel five is arranged between the pressure regulating valve mounting cavity and the circulation cavity, a connecting channel six is arranged between the pressure regulating valve mounting cavity and the oil inlet channel, and a pressure regulating valve is arranged in the pressure regulating valve mounting cavity.

6. The electromagnetic oil pump according to claim 5, characterized in that: the pressure regulating valve comprises a pressure regulating bolt, a pressure regulating spring, a pressure regulating valve seat and pressure regulating valve port rubber, the pressure regulating bolt is in threaded connection with a mounting cavity of the pressure regulating valve, a threaded connection end of the pressure regulating bolt is of a hollow structure with an opening at one end, the pressure regulating valve seat, the pressure regulating valve port rubber and the pressure regulating spring are located in a hollow cavity of the pressure regulating bolt, and the pressure regulating valve port rubber is blocked on the connecting channel V through the pressure regulating valve seat and the pressure regulating spring.

7. The electromagnetic oil pump according to claim 1, characterized in that: the pump body is provided with a sealing screw installation cavity, a communication channel seven is arranged between the sealing screw installation cavity and the circulation cavity, the side wall of the sealing screw installation cavity is provided with an air vent, and the sealing screw installation cavity is internally threaded with a sealing screw for opening and closing the air vent.

8. The electromagnetic oil pump according to claim 1, characterized in that: the oil inlet check valve comprises an oil inlet check valve seat, an oil inlet check valve plug and an oil inlet check valve spring, the oil outlet check valve comprises an oil outlet check valve seat, an oil outlet check valve plug, an oil outlet check valve spring and a spring seat, the oil inlet check valve seat and the oil outlet check valve seat are both provided with an inlet and an outlet, the oil inlet check valve plug is used for opening and closing the inlet on the oil inlet check valve seat, and the oil outlet check valve plug is used for opening and closing the inlet on the oil outlet check valve seat;

the oil inlet check valve and the oil outlet check valve are coaxially arranged, the oil inlet check valve spring is abutted between the oil inlet check valve plug and the oil outlet check valve seat, and the oil outlet check valve spring is abutted between the oil outlet check valve plug and the spring seat.

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