阅读说明：本技术 一种节流电磁换向阀 (Throttling electromagnetic reversing valve ) 是由 王奇明 贺文东 于 2020-12-30 设计创作，主要内容包括：一种节流电磁换向阀,属于电磁阀技术领域,解决了传统方式控制流量采用外部增加节流阀导致成本增加和安装空间增加等技术问题。解决方案为：一种节流电磁换向阀,包括阀体、阀芯、电磁驱动装置、设于阀体左侧的第一调节装置和设于电磁驱动装置右侧的第二调节装置；第二调节装置包括设于第二调节杆过孔中的第二调节杆和设于固定铁芯右侧的第二手持部,第一调节装置包括第一手持部、第一调节杆、调节座和第二复位装置。本发明结构简单,在电磁换向阀左右两侧增加第一调节装置和第二调节装置,通过第一调节装置和第二调节装置的调节实现了对进入电磁换向阀中流量的控制,也避免了外部再次增加节流阀,不仅方便操作,也降低了设备成本和维修成本。(The utility model provides a throttle solenoid directional valve, belongs to solenoid valve technical field, has solved traditional mode control flow and has adopted the outside technical problem such as increase cost increase and installation space increase that increases of increasing the choke valve. The solution is as follows: a throttling electromagnetic directional valve comprises a valve body, a valve core, an electromagnetic driving device, a first adjusting device arranged on the left side of the valve body and a second adjusting device arranged on the right side of the electromagnetic driving device; the second adjusting device comprises a second adjusting rod arranged in the second adjusting rod through hole and a second handheld part arranged on the right side of the fixed iron core, and the first adjusting device comprises a first handheld part, a first adjusting rod, an adjusting seat and a second resetting device. The electromagnetic reversing valve is simple in structure, the first adjusting device and the second adjusting device are additionally arranged on the left side and the right side of the electromagnetic reversing valve, the flow entering the electromagnetic reversing valve is controlled through the adjustment of the first adjusting device and the second adjusting device, a throttle valve is prevented from being additionally arranged outside, the operation is convenient, and the equipment cost and the maintenance cost are reduced.)

1. The utility model provides a throttle solenoid directional valve, includes valve body (1), case (2) and electromagnetic drive device (3), be equipped with a plurality of hydraulic fluid port on valve body (1), set up the case along the horizontal direction in valve body (1) and place passageway (1-1), a plurality of hydraulic fluid port respectively with the case place passageway (1-1) intercommunication to a plurality of hydraulic fluid ports all place the axis direction mutually perpendicular of passageway (1-1) with the case, case (2) install in the case is placed passageway (1-1) in and is placed passageway (1-1) reciprocating motion along the case, electromagnetic drive device (3) are located valve body (1) right side, its characterized in that: the throttling electromagnetic directional valve also comprises a first adjusting device (4) arranged on the left side of the valve body (1) and a second adjusting device (5) arranged on the right side of the electromagnetic driving device (3);

a first mounting hole (1-2) is formed in the left side wall of the valve body (1), a second mounting hole (1-3) is formed in the right side wall of the valve body (1), the axes of the first mounting hole (1-2) and the second mounting hole (1-3) are collinear with the axis of the valve core (2), a stop block (1-4) is arranged on the bottom surface of each of the first mounting hole (1-2) and the second mounting hole (1-3), and a valve core through hole (1-4-1) is formed in the center of each stop block (1-4); the outer walls of the left side and the right side of the valve core (2) close to the two ends are respectively provided with a shaft shoulder (2-1), and the outer diameter of each shaft shoulder (2-1) is equal to the inner diameter of the valve core through hole (1-4-1);

the electromagnetic driving device (3) comprises an electromagnet (3-1), a fixed iron core (3-2), a movable iron core (3-3), a push rod (3-4), a reset device (3-5) and a movable iron core adjusting rod (3-6), the electromagnet (3-1) is fixedly connected with the right end face of the valve body (1), the fixed iron core (3-2) penetrates through the electromagnet (3-1) in the horizontal direction and extends to the outside of the electromagnet (3-1), a movable iron core placing cavity (3-2-1) is arranged in the middle of the fixed iron core (3-2), a push rod through hole (3-2-2) is formed in the left fixed iron core (3-2) of the movable iron core placing cavity (3-2-1), and the movable iron core placing cavity (3-2-1) is provided with the push rod through hole (3-2-2) on the right side of the fixed iron core A second adjusting rod via hole (3-2-3), wherein a resetting device mounting groove (3-2-4) is formed in the left end face of the fixed iron core (3-2); the left end of the fixed iron core (3-2) is in threaded connection with the second mounting hole (1-3), the reset device (3-5) is arranged in the reset device mounting groove (3-2-4), the reset device (3-5) comprises a reset spring (3-5-1) and a spring supporting plate (3-5-2) arranged on the left side of the reset spring (3-5-1), the right end of the reset spring (3-5-1) is fixedly connected with the bottom surface of the reset device mounting groove (3-2-4), the left end of the reset spring (3-5-1) is fixedly connected with the spring supporting plate (3-5-2), the middle part of the spring supporting plate (3-5-2) is provided with a second ejector rod through hole (3-5-3), the axes of the ejector rod through hole (3-2-2), the second adjusting rod through hole (3-2-3) and the second ejector rod through hole (3-5-3) are all coincided with the axis of the valve core (2), the inner diameter of the second ejector rod through hole (3-5-3) is equal to the outer diameter of the valve core (2), and the outer diameter of the spring supporting plate (3-5-2) is larger than the inner diameter of the valve core through hole (1-4-1);

the movable iron core (3-3) is arranged in the movable iron core placing cavity (3-2-1), the top wall of the fixed iron core placing cavity (3-2-1) is provided with a raised slide way (3-2-5), the top surface of the movable iron core (3-3) is provided with a slide groove (3-3-2) matched with the raised slide way (3-2-5), the slide groove (3-3-2) reciprocates left and right along the raised slide way (3-2-5), the axis position of the movable iron core (3-3) is provided with a movable iron core adjusting rod through hole (3-3-1), the axis of the movable iron core adjusting rod through hole (3-3-1) is superposed with the axis of the ejector rod through hole (3-2-2), the right end of the movable iron core adjusting rod (3-6) is provided with a rectangular end (3-6-1), the ejector rod (3-4) sequentially penetrates through the ejector rod through hole (3-2-2), the reset spring (3-5-1) and the second ejector rod through hole (3-5-3) and then abuts against the right end face of the valve core (2), the movable iron core adjusting rod (3-6) penetrates through the movable iron core adjusting rod through hole (3-3-1), the rectangular end (3-6-1) extends to the outside of the movable iron core (3-3), and the left side of the movable iron core adjusting rod through hole (3-3-1) is in threaded connection with the movable iron core adjusting rod (3-6);

the second adjusting device (5) comprises a second adjusting rod (5-1) arranged in a second adjusting rod through hole (3-2-3) and a second handheld part (5-2) arranged on the right side of the fixed iron core (3-2), a notch (5-1-1) matched with the rectangular end (3-6-1) is formed in the left end face of the second adjusting rod (5-1), and the right end of the second adjusting rod (5-1) extends out of the second adjusting rod through hole (3-2-3) and is detachably connected with the second handheld part (5-2);

the first adjusting device (4) comprises a first handheld part (4-1), a first adjusting rod (4-2), an adjusting seat (4-3) and a second resetting device (4-4), a first adjusting rod through hole (4-3-1) is formed in the adjusting seat (4-3), a second resetting device mounting groove (4-3-2) is formed in the right end face of the adjusting seat (4-3), the right end of the adjusting seat (4-3) is in threaded connection with the first mounting hole (1-2), the second resetting device (4-4) is arranged in the second resetting device mounting groove (4-3-2), the second resetting device (4-4) comprises a second resetting spring (4-4-1) and a second spring supporting plate (4-4-2) arranged on the right side of the second resetting spring (4-4-1), the left end of the second reset spring (4-4-1) is fixedly connected with the bottom surface of the second reset device mounting groove (4-3-2), the right end of the second return spring (4-4-1) is fixedly connected with the second spring supporting plate (4-4-2), a second valve core through hole (4-4-3) is formed in the middle of the second spring supporting plate (4-4-2), the axes of the first adjusting rod through hole (4-3-1) and the second valve core through hole (4-4-3) are coincident with the axis of the valve core (2), the inner diameter of the second valve core through hole (4-4-3) is equal to the outer diameter of the valve core (2), the outer diameter of the second spring supporting plate (4-4-2) is larger than the inner diameter of the valve core through hole (1-4-1);

the first adjusting rod (4-2) is arranged in the first adjusting rod through hole (4-3-1), the right end of the first adjusting rod (4-2) is arranged in the second reset spring (4-4-1), and the left end of the first adjusting rod (4-2) is detachably connected with the first handheld part (4-1) arranged on the outer side of the left end of the adjusting seat (4-3).

2. A throttle electromagnetic directional valve according to claim 1, characterized in that: and a first sealing ring (6) is arranged at the contact position of the first adjusting rod (4-2) and the inner wall of the adjusting seat (4-3).

3. A throttle electromagnetic directional valve according to claim 1, characterized in that: and a second sealing ring (7) is arranged at the contact position of the adjusting seat (4-3) and the inner wall of the first mounting hole (1-2).

4. A throttle electromagnetic directional valve according to claim 1, characterized in that: and a third sealing ring (8) is arranged at the contact position of the fixed iron core (3-2) and the inner wall of the second mounting hole (1-3).

5. A throttle electromagnetic directional valve according to claim 1, characterized in that: and a fourth sealing ring (9) is arranged at the contact position of the second adjusting rod (5-1) and the inner wall of the second adjusting rod through hole (3-2-3) of the fixed iron core (3-2).

6. A throttle electromagnetic directional valve according to claim 1, characterized in that: the second handheld part (5-2) comprises a second connecting sleeve (5-2-1) and a second connecting seat (5-2-2) which is arranged on the right side of the second connecting sleeve (5-2-1), the inner wall of the second connecting sleeve (5-2-1) is in threaded connection with the outer wall of the right end of the fixed iron core (3-2), and the right end of the second adjusting rod (5-1) penetrates through the second connecting sleeve (5-2-1) and is connected with the second connecting seat (5-2-2) through a set screw.

7. A throttle electromagnetic directional valve according to claim 1, characterized in that: the first handheld portion (4-1) comprises a first connecting sleeve (4-1-1) and a first connecting seat (4-1-2), the first connecting sleeve (4-1-1) is horizontally arranged, the first connecting seat (4-1-2) is arranged on the left side of the first connecting sleeve (4-1-1), the inner wall of the first connecting sleeve (4-1-1) is in threaded connection with the outer wall of the left end of the adjusting seat (4-3), and the left end of the first adjusting rod (4-2) penetrates through the first connecting sleeve (4-1-1) and the first connecting seat (4-1-2) to be connected through a set screw.

8. A throttle electromagnetic directional valve according to claim 1, characterized in that: the electromagnet fixing seat is characterized in that an electromagnet fixing seat (10) is arranged on the right side of the electromagnet (3-1), a fixed iron core through hole (10-1) is formed in the electromagnet fixing seat (10), the electromagnet fixing seat (10) is sleeved on the right end face of the fixed iron core (3-2) and is in threaded connection with the outer wall of the fixed iron core (3-2), and the left end face of the electromagnet fixing seat (10) is tightly pressed on the right end face of the electromagnet (3-1).

Technical Field

The invention belongs to the technical field of electromagnetic valves, and particularly relates to a throttling electromagnetic directional valve.

Background

The solenoid valve is an industrial device controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, and is used for adjusting the direction, flow rate, speed and other parameters of a medium in an industrial control system. The electromagnetic change valve uses the electromagnet attraction to push the valve core to change the working position of the valve, the valve core makes relative movement in the valve body to change the liquid flow direction, and the oil path is switched on or switched off, thereby controlling the change, start or stop of the actuating element.

The effect of the electrification of an electromagnet in the existing electromagnetic directional valve on a valve core is unchanged, the flow passing through the electromagnetic directional valve is constant, a throttle valve is generally added outside to control the flow, and the addition of the throttle valve not only increases the installation space of equipment, but also increases the equipment cost and the maintenance cost.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a throttling electromagnetic directional valve, which solves the technical problems of cost increase, installation space increase and the like caused by the fact that a throttling valve is additionally arranged outside the traditional mode for controlling flow.

In order to solve the problems, the technical scheme of the invention is as follows: the utility model provides a throttle solenoid directional valve, includes valve body, case and electromagnetic drive device, be equipped with a plurality of hydraulic fluid port on the valve body, set up the case along the horizontal direction in the valve body and place the passageway, a plurality of hydraulic fluid ports place the passageway intercommunication with the case respectively to a plurality of hydraulic fluid ports all place the axis direction mutually perpendicular of passageway with the case, the case install in the case is placed in the passageway and is placed passageway reciprocating motion along the case, electromagnetic drive device locates the valve body right side, wherein: the throttling electromagnetic directional valve also comprises a first adjusting device arranged on the left side of the valve body and a second adjusting device arranged on the right side of the electromagnetic driving device;

a first mounting hole is formed in the left side wall of the valve body, a second mounting hole is formed in the right side wall of the valve body, the axes of the first mounting hole and the second mounting hole are collinear with the axis of the valve core, stop blocks are arranged on the bottom surfaces of the first mounting hole and the second mounting hole, and a valve core through hole is formed in the center of each stop block; the outer walls of the left side and the right side of the valve core, which are close to the two ends, are provided with shaft shoulders, and the outer diameter of each shaft shoulder is equal to the inner diameter of the valve core through hole;

the electromagnetic driving device comprises an electromagnet, a fixed iron core, a movable iron core, an ejector rod, a reset device and a movable iron core adjusting rod, wherein the electromagnet is fixedly connected with the right end face of the valve body, the fixed iron core penetrates through the electromagnet in the horizontal direction and extends to the outside of the electromagnet, a movable iron core placing cavity is arranged in the middle of the fixed iron core, an ejector rod through hole is formed in the fixed iron core on the left side of the movable iron core placing cavity, a second adjusting rod through hole is formed in the fixed iron core on the right side of the movable iron core placing cavity, and a reset device mounting groove is formed in the; the left end of the fixed iron core is in threaded connection with the second mounting hole, the reset device is arranged in the reset device mounting groove and comprises a reset spring and a spring supporting plate arranged on the left side of the reset spring, the right end of the reset spring is fixedly connected with the bottom surface of the reset device mounting groove, the left end of the reset spring is fixedly connected with the spring supporting plate, a second ejector rod through hole is formed in the middle of the spring supporting plate, the axes of the ejector rod through hole, a second adjusting rod through hole and a second ejector rod through hole are all overlapped with the axis of the valve core, the inner diameter of the second ejector rod through hole is equal to the outer diameter of the valve core, and the outer diameter of the spring supporting plate is larger than the inner diameter of the;

the movable iron core is arranged in the movable iron core placing cavity, a raised slide way is arranged on the top wall in the fixed iron core placing cavity, a slide groove matched with the raised slide way is arranged on the top surface of the movable iron core, the slide groove moves in a reciprocating mode left and right along the raised slide way, a movable iron core adjusting rod through hole is arranged at the axis position of the movable iron core, the axis of the movable iron core adjusting rod through hole is superposed with the axis of the ejector rod through hole, a rectangular end is arranged at the right end of the movable iron core adjusting rod, the ejector rod sequentially penetrates through the ejector rod through hole, a reset spring and a second ejector rod through hole to abut against the right end face of the valve core, the movable iron core adjusting rod penetrates through the movable iron core adjusting rod through hole, the rectangular end extends to the outside of;

the second adjusting device comprises a second adjusting rod arranged in a second adjusting rod through hole and a second handheld part arranged on the right side of the fixed iron core, a notch matched with the rectangular end is formed in the left end face of the second adjusting rod, and the right end of the second adjusting rod extends out of the second adjusting rod through hole and is detachably connected with the second handheld part;

the first adjusting device comprises a first handheld part, a first adjusting rod, an adjusting seat and a second resetting device, a first adjusting rod through hole is arranged in the adjusting seat, a second resetting device mounting groove is arranged on the right end face of the adjusting seat, the right end of the adjusting seat is in threaded connection with the first mounting hole, the second resetting device is arranged in the second resetting device mounting groove, the second resetting device comprises a second resetting spring and a second spring supporting plate arranged on the right side of the second resetting spring, the left end of the second resetting spring is fixedly connected with the bottom face of the second resetting device mounting groove, the right end of the second resetting spring is fixedly connected with the second spring supporting plate, a second valve core through hole is arranged in the middle of the second spring supporting plate, the axes of the first adjusting rod through hole and the second valve core through hole are coincident with the axis of the valve core, and the inner diameter of the second valve core through hole is equal to the outer diameter of the valve core, the outer diameter of the second spring supporting plate is larger than the inner diameter of the valve core through hole;

the first adjusting rod is arranged in the first adjusting rod through hole, the right end of the first adjusting rod is arranged in the second reset spring, and the left end of the first adjusting rod is detachably connected with a first handheld portion arranged on the outer side of the left end of the adjusting seat.

Furthermore, a first sealing ring is installed at the contact position of the first adjusting rod and the inner wall of the adjusting seat.

Furthermore, the contact position of the adjusting seat and the inner wall of the first mounting hole is provided with a second sealing ring.

Further, a third sealing ring is installed at the contact position of the fixed iron core and the inner wall of the second installation hole.

Furthermore, a fourth sealing ring is installed at the contact position of the second adjusting rod and the inner wall of the second adjusting rod through hole of the fixed iron core.

Furthermore, the second handheld part comprises a second connecting sleeve and a second connecting seat, the second connecting sleeve is horizontally arranged, the second connecting seat is arranged on the right side of the second connecting sleeve, the inner wall of the second connecting sleeve is in threaded connection with the outer wall of the right end of the fixed iron core, and the right end of the second adjusting rod penetrates through the second connecting sleeve and is connected with the second connecting seat through a set screw.

Further, first handheld portion includes the first connecting sleeve that the level set up and locates the left first connecting seat of first connecting sleeve, first connecting sleeve inner wall with adjust a left end outer wall threaded connection, first regulation pole left end passes first connecting sleeve with first connecting seat passes through holding screw and connects.

Further, the electromagnet right side is equipped with the electromagnet fixing base, the electromagnet fixing base is equipped with fixed iron core via hole, the electromagnet fixing base cover is located fixed iron core right-hand member face and with fixed iron core outer wall threaded connection, electromagnet fixing base left end face sticiss the electromagnet right-hand member face.

Compared with the prior art, the invention has the beneficial effects that:

1. before electrifying, the valve core is positioned in the middle of the valve body, the oil port is in a closed state, after electrifying, the movable iron core and the fixed iron core are attracted, the valve core is further pushed to reach the initial position of the left end, the oil inlet is communicated with the oil outlet, and oil conveying is started;

2. adjusting a first adjusting device, rotating a first handheld part, driving a first adjusting rod to push a valve core to move rightwards, further changing the flow of oil in an oil port, pushing a movable iron core and a movable iron core adjusting rod on the right side to move rightwards under the action of rightwards movement of the valve core, and forming a gap between a fixed iron core and the movable iron core;

3. in order to avoid heating caused by too long gap time between the fixed iron core and the movable iron core and reduce the service life of the fixed iron core and the movable iron core, the second adjusting device is adjusted, the second handheld part is rotated, the second adjusting rod drives the rectangular end in the notch on the left side of the second adjusting rod to rotate, the left end of the movable iron core adjusting rod is in threaded connection with the movable iron core, and the movable iron core is pushed to move leftwards under the rotation of the movable iron core adjusting rod, so that the movable iron core and the fixed iron core are attracted in the most appropriate state, the position with the optimal magnetic flux is reached, and;

4. the protruding slide way on the roof was mutually supported with the spout of activity iron core top surface in the chamber was placed to fixed iron core, and reciprocating motion about the protruding slide way was followed to the spout, and horizontal migration about control activity iron core only did has avoided movable iron core to adjust pole rotation effect down and rotatory again.

The electromagnetic suction valve is simple in structure, the first adjusting device and the second adjusting device are additionally arranged on the left side and the right side of the electromagnetic reversing valve body, the first adjusting device adjusts and controls the flow in the valve body, the second adjusting device ensures that the electromagnetic suction is in the optimal suction state, and the problems that the heating is caused and the service life is shortened due to the fact that the electromagnetic suction is not in the optimal suction state are solved; and the throttle valve is prevented from being added outside for regulating the flow, so that the operation is convenient, and the equipment cost and the maintenance cost are reduced.

Drawings

FIG. 1 is a structural diagram of the valve core in an initial state after the valve core reaches the left end after being electrified;

FIG. 2 is a schematic structural diagram illustrating a state in which only the first adjustment device is adjusted in the initial state of FIG. 1 according to the present invention;

FIG. 3 is a structural diagram illustrating a state of the second adjusting device adjusted in the state of FIG. 2 according to the present invention;

FIG. 4 is a view A-A of FIG. 1;

fig. 5 is a schematic structural diagram of a valve body and a valve core in the invention.

Detailed Description

The invention is described in further detail below with reference to the figures and examples.

As shown in fig. 1 to 5, a throttling electromagnetic directional valve includes a valve body 1, a valve core 2 and an electromagnetic driving device 3, wherein a plurality of oil ports are arranged on the valve body 1, a valve core placing passage 1-1 is arranged in the valve body 1 along a horizontal direction, the plurality of oil ports are respectively communicated with the valve core placing passage 1-1, the plurality of oil ports are all perpendicular to an axial direction of the valve core placing passage 1-1, the valve core 2 is installed in the valve core placing passage 1-1 and reciprocates along the valve core placing passage 1-1, and the electromagnetic driving device 3 is arranged on a right side of the valve body 1, wherein: the throttling electromagnetic directional valve also comprises a first adjusting device 4 arranged on the left side of the valve body 1 and a second adjusting device 5 arranged on the right side of the electromagnetic driving device 3;

a first mounting hole 1-2 is formed in the left side wall of the valve body 1, a second mounting hole 1-3 is formed in the right side wall of the valve body 1, the axes of the first mounting hole 1-2 and the second mounting hole 1-3 are collinear with the axis of the valve core 2, a stop block 1-4 is arranged on the bottom surfaces of the first mounting hole 1-2 and the second mounting hole 1-3, and a valve core through hole 1-4-1 is formed in the center of the stop block 1-4; the outer walls of the left side and the right side of the valve core 2 close to the two ends are respectively provided with a shaft shoulder 2-1, and the outer diameter of the shaft shoulder 2-1 is equal to the inner diameter of the valve core through hole 1-4-1;

the electromagnetic driving device 3 comprises an electromagnet 3-1, a fixed iron core 3-2, a movable iron core 3-3, a mandril 3-4, a reset device 3-5 and a movable iron core adjusting rod 3-6, wherein the electromagnet 3-1 is fixedly connected with the right end face of the valve body 1, the fixed iron core 3-2 penetrates through the electromagnet 3-1 along the horizontal direction and extends to the outside of the electromagnet 3-1, a movable iron core placing cavity 3-2-1 is arranged in the middle of the fixed iron core 3-2, the fixed iron core 3-2 on the left side of the movable iron core placing cavity 3-2-1 is provided with a mandril through hole 3-2-2, the fixed iron core 3-2 on the right side of the movable iron core placing cavity 3-2-1 is provided with a second adjusting rod 3-2-3, a resetting device mounting groove 3-2-4 is formed in the left end face of the fixed iron core 3-2; the left end of the fixed iron core 3-2 is in threaded connection with the second mounting hole 1-3, the reset device 3-5 is arranged in the reset device mounting groove 3-2-4, the reset device 3-5 comprises a reset spring 3-5-1 and a spring supporting plate 3-5-2 arranged on the left side of the reset spring 3-5-1, the right end of the reset spring 3-5-1 is fixedly connected with the bottom surface of the reset device mounting groove 3-2-4, the left end of the reset spring 3-5-1 is fixedly connected with the spring supporting plate 3-5-2, the middle of the spring supporting plate 3-5-2 is provided with a second ejector rod through hole 3-5-3, the ejector rod through hole 3-2-2, the first mounting hole 3-5-3, the second mounting hole 3-2, the, The axes of the second adjusting rod through hole 3-2-3 and the second ejector rod through hole 3-5-3 are coincided with the axis of the valve core 2, the inner diameter of the second ejector rod through hole 3-5-3 is equal to the outer diameter of the valve core 2, and the outer diameter of the spring supporting plate 3-5-2 is larger than the inner diameter of the valve core through hole 1-4-1;

the movable iron core 3-3 is arranged in the movable iron core placing cavity 3-2-1, the top wall of the fixed iron core placing cavity 3-2-1 is provided with a raised slideway 3-2-5, the top surface of the movable iron core 3-3 is provided with a chute 3-3-2 matched with the raised slideway 3-2-5, the chute 3-3-2 reciprocates along the raised slideway 3-2-5, the axial position of the movable iron core 3-3 is provided with a movable iron core adjusting rod through hole 3-3-1, the axial line of the movable iron core adjusting rod through hole 3-3-1 is superposed with the axial line of the ejector rod through hole 3-2-2, the right end of the movable iron core adjusting rod 3-6 is provided with a rectangular end 3-6-1, the ejector rod 3-4 sequentially penetrates through the ejector rod through hole 3-2-2, the reset spring 3-5-1 and the second ejector rod through hole 3-5-3 and then abuts against the right end face of the valve core 2, the movable iron core adjusting rod 3-6 penetrates through the movable iron core adjusting rod through hole 3-3-1, the rectangular end 3-6-1 extends to the outside of the movable iron core 3-3, and the left side of the movable iron core adjusting rod through hole 3-3-1 is in threaded connection with the movable iron core adjusting rod 3-6;

the second adjusting device 5 comprises a second adjusting rod 5-1 arranged in a second adjusting rod through hole 3-2-3 and a second holding part 5-2 arranged on the right side of the fixed iron core 3-2, the left end face of the second adjusting rod 5-1 is provided with a notch 5-1-1 matched with the rectangular end 3-6-1, and the right end of the second adjusting rod 5-1 extends out of the second adjusting rod through hole 3-2-3 and is detachably connected with the second holding part 5-2;

the first adjusting device 4 comprises a first handheld part 4-1, a first adjusting rod 4-2, an adjusting seat 4-3 and a second resetting device 4-4, a first adjusting rod through hole 4-3-1 is arranged in the adjusting seat 4-3, a second resetting device mounting groove 4-3-2 is arranged on the end face of the right side of the adjusting seat 4-3, the right end of the adjusting seat 4-3 is in threaded connection with the first mounting hole 1-2, the second resetting device 4-4 is arranged in the second resetting device mounting groove 4-3-2, the second resetting device 4-4 comprises a second resetting spring 4-4-1 and a second spring supporting plate 4-4-2 arranged on the right side of the second resetting spring 4-4-1, and the left end of the second resetting spring 4-4-1 and the second resetting device mounting groove 4-3-1 2, the bottom surface of the second return spring 4-4-1 is fixedly connected, the right end of the second return spring 4-4-1 is fixedly connected with the second spring supporting plate 4-4-2, a second valve core through hole 4-4-3 is formed in the middle of the second spring supporting plate 4-4-2, the axes of the first adjusting rod through hole 4-3-1 and the second valve core through hole 4-4-3 are both coincided with the axis of the valve core 2, the inner diameter of the second valve core through hole 4-4-3 is equal to the outer diameter of the valve core 2, and the outer diameter of the second spring supporting plate 4-4-2 is larger than the inner diameter of the valve core through hole 1-4-1;

the first adjusting rod 4-2 is arranged in the first adjusting rod through hole 4-3-1, the right end of the first adjusting rod 4-2 is arranged in the second return spring 4-4-1, and the left end of the first adjusting rod 4-2 is detachably connected with the first handheld part 4-1 arranged on the outer side of the left end of the adjusting seat 4-3.

Furthermore, a first sealing ring 6 is arranged at the contact position of the first adjusting rod 4-2 and the inner wall of the adjusting seat 4-3.

Furthermore, a second sealing ring 7 is arranged at the contact position of the adjusting seat 4-3 and the inner wall of the first mounting hole 1-2.

Further, a third sealing ring 8 is arranged at the contact position of the fixed iron core 3-2 and the inner wall of the second mounting hole 1-3.

Further, a fourth sealing ring 9 is installed at the contact position of the second adjusting rod 5-1 and the inner wall of the second adjusting rod through hole 3-2-3 of the fixed iron core 3-2.

Further, the second handheld part 5-2 comprises a second connecting sleeve 5-2-1 and a second connecting seat 5-2-2, the second connecting sleeve 5-2-1 is horizontally arranged, the second connecting seat is arranged on the right side of the second connecting sleeve 5-2-1, the inner wall of the second connecting sleeve 5-2-1 is in threaded connection with the outer wall of the right end of the fixed iron core 3-2, and the right end of the second adjusting rod 5-1 penetrates through the second connecting sleeve 5-2-1 to be connected with the second connecting seat 5-2-2 through a set screw.

Furthermore, the first handheld portion 4-1 comprises a first connecting sleeve 4-1-1 and a first connecting seat 4-1-2, the first connecting sleeve 4-1-1 is horizontally arranged, the first connecting seat is arranged on the left side of the first connecting sleeve 4-1-1, the inner wall of the first connecting sleeve 4-1-1 is in threaded connection with the outer wall of the left end of the adjusting seat 4-3, and the left end of the first adjusting rod 4-2 penetrates through the first connecting sleeve 4-1-1 to be connected with the first connecting seat 4-1-2 through a set screw.

Further, an electromagnet fixing seat 10 is arranged on the right side of the electromagnet 3-1, a fixed iron core through hole 10-1 is formed in the electromagnet fixing seat 10, the electromagnet fixing seat 10 is sleeved on the right end face of the fixed iron core 3-2 and is in threaded connection with the outer wall of the fixed iron core 3-2, and the left end face of the electromagnet fixing seat 10 is tightly pressed on the right end face of the electromagnet 3-1.

The working process of the invention is as follows:

before electrifying, the valve core 2 is positioned in the middle of the valve body 1, the oil port is in a closed state at the moment, after electrifying, the movable iron core 3-3 and the fixed iron core 3-2 are attracted, the valve core 2 is further pushed to reach the initial position at the left end, the state shown in figure 1 is reached, the oil inlet is communicated with the oil outlet, and oil conveying is started;

adjusting a first adjusting device 4, rotating a first handheld part 4-1 to drive a first adjusting rod 4-2 to push a valve core 2 to move rightwards, and further changing the flow of oil in an oil port, at the moment, under the action of rightwards movement of the valve core 2, pushing a right movable iron core 3-3 and a right movable iron core adjusting rod 3-6 to move rightwards, and forming a gap between a fixed iron core 3-2 and the movable iron core 3-3, wherein the state is shown in fig. 2;

in order to avoid heating and reduction of the service life caused by too long gap time between the fixed iron core 3-2 and the movable iron core 3-3, the second adjusting device 5 is adjusted, the second holding part 5-2 is rotated, the second adjusting rod 5-1 drives the rectangular end 3-6-1 in the notch on the left side to rotate, the left end of the movable iron core adjusting rod 3-6 is in threaded connection with the movable iron core 3-3, and the movable iron core 3-3 is pushed to move like the left under the rotation of the movable iron core adjusting rod 3-6, so that the movable iron core 3-3 and the fixed iron core 3-2 are attracted in the initial state, the optimal attraction position is reached, the optimal magnetic flux position is also reached, and the heating phenomenon is also avoided.

Under the cooperation of the first adjusting device 4 and the second adjusting device 5, the flow is adjusted, and the phenomenon that the service life is influenced due to heating caused by the fact that the fixed iron core 3-2 and the movable iron core 3-3 are not in place in suction after the flow is adjusted is avoided.