Electromagnetic proportional flow valve

Abstract

The utility model provides an electromagnetic proportional flow valve, and belongs to the technical field of valves. The inserting hole communicated with the sliding way is formed in the valve body with the sliding way, the spring seat and the electromagnetic assembly are arranged on the valve body and located at the two ends of the sliding way respectively, the valve element is arranged in the sliding way in a sliding mode and located between the spring seat and the electromagnetic assembly, and the reset spring is arranged between the spring seat and the valve element. The electromagnetic assembly and the reset spring act on the two ends of the valve element correspondingly, so that the valve element moves in the sliding way, the inserting rod is installed in the inserting hole, one end of the inserting rod extends into the sliding way, and the sliding groove is formed in the outer side wall of the valve element in the axial direction and matched with the end, extending into the sliding way, of the inserting rod. According to the technical scheme, guiding can be carried out through cooperation of the inserting rod and the sliding groove, meanwhile, circumferential rotation of the valve element is limited, and therefore the problems of excessive abrasion or reset spring torsion damage caused by circumferential rotation of the valve element after long-time use are solved, the service life is prolonged, and the use cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, concretely relates to a kind of electromagnetic proportional flow valve. BACKGROUND

[0002] Electromagnetic proportional valve is widely used in automatic control pipeline system, such as fuel supply system of automobile, because it can realize flow control and regulation through electric control structure, and has broad market prospect.

[0003] The electromagnetic proportional valve on the market usually like the proportional regulating electromagnetic valve disclosed in patent CN104864118A, the spring seat is fixedly installed in the inner cavity of valve sleeve at one end, the valve core is installed in the inner cavity of valve sleeve and moves linearly relative to valve sleeve, the return spring is installed between spring seat and valve core, oil port is provided on valve sleeve, which is communicated with the inner cavity of valve sleeve, the magnetic core is installed in the inner cavity of guide sleeve and can slide linearly relative to guide sleeve, the magnetic core is in contact with the rear end of valve core, the electromagnetic solenoid sleeve is installed on guide sleeve, the magnetic field generated by the electromagnetic solenoid can push the magnetic core to slide in the guide sleeve, so as to push the valve core to slide in the valve sleeve, thereby realizing the opening and closing control of oil port and the adjustment of the size of oil port opening, and the valve core resets under the action of return spring after the electromagnetic solenoid is powered off, which meets the flow regulation requirement. Although the above structure can well meet the flow regulation requirement and is suitable for most existing use occasions, due to the fact that one end of valve core directly abuts against one end of return spring, and the other end of valve core also abuts against magnetic core in contact, due to the influence of the difference between internal medium pressure and the force distribution of return spring, the valve core is prone to rotate circumferentially in addition to linear sliding in the process of long-time extension and contraction, which not only increases wear, but also twists return spring, increases the burden of return spring and affects service life. SUMMARY

[0004] In view of the above problems existing in the prior art, the present application provides an electromagnetic proportional flow valve, which has a through hole with a sliding channel communicated with the valve core on the valve body, a plug rod with one end extending into the sliding channel is installed in the through hole, and a sliding groove is formed on the outer side wall of the valve core along the axial direction, the end of the plug rod extending into the sliding channel extends into the sliding groove, the cooperation of the plug rod and the sliding groove can meet the axial movement requirement of the valve core and limit the circumferential rotation of the valve core, thereby avoiding the problems of increased wear or shortened service life of the valve core due to circumferential rotation after long-time use, and reducing the use cost.

[0005] The specific technical solutions are as follows:

[0006] An electromagnetic proportional flow valve, a valve body, a valve core, a reset spring, a spring seat and an electromagnetic assembly, the valve body is provided with a slide channel penetrating through both ends, one end of the slide channel is provided with a spring seat, the valve core is slidingly arranged in the slide channel, and a reset spring is arranged between one end of the valve core and the spring seat, the electromagnetic assembly is installed at the other end of the valve body, one end of the moving iron core of the electromagnetic assembly abuts against the end of the valve core away from the reset spring, and the valve has the following characteristics: a plug rod is arranged, a plug hole penetrating through the side wall of the valve body is formed on the valve body in a direction perpendicular to the slide channel, the plug rod is installed in the plug hole, and one end of the plug rod extends into the slide channel, and a sliding groove is formed on the outer wall of the valve core in the axial direction, and the end of the plug rod extending into the slide channel is inserted into the sliding groove.

[0007] The electromagnetic proportional flow valve, wherein the end face of the end of the plug rod inserted into the sliding groove is arranged in a spherical surface.

[0008] The electromagnetic proportional flow valve, wherein a gland is further arranged, the gland is installed at the end of the plug hole away from the communication slide channel, and one end of the plug rod abuts against the gland.

[0009] The electromagnetic proportional flow valve, wherein a rubber pad is arranged between the gland and the plug rod.

[0010] The electromagnetic proportional flow valve, wherein the end of the plug hole communicating with the slide channel is arranged in a tapered shape, and the diameter of the end of the plug rod located in the plug hole is greater than the diameter of the end extending into the sliding groove.

[0011] The electromagnetic proportional flow valve, wherein the oil inlet and the adjusting oil outlet are arranged on the end of the valve body away from the electromagnetic assembly and spaced apart along the axial direction of the valve body, an oil outlet is formed on the spring seat, and a guide oil groove is arranged on the outer wall of the valve core, and the guide oil groove communicates with the oil inlet and the adjusting oil outlet or the oil inlet, the adjusting oil outlet and the oil outlet when the valve core moves in the slide channel.

[0012] The electromagnetic proportional flow valve, wherein a ring-shaped stopper is arranged on the outer wall of the end of the valve body connected with the electromagnetic assembly, an outer shell is arranged outside the electromagnetic assembly, one end of the outer shell abuts against the stopper, and the outer side wall of the outer shell protrudes outward beyond the outer side wall of the stopper.

[0013] The electromagnetic proportional flow valve, wherein the electromagnetic assembly comprises a coil and a guide sleeve, one end of the coil is sleeved on one end of the valve body, the guide sleeve is embedded in the coil and arranged coaxially with the valve body, and the moving iron core is slidingly arranged in the guide sleeve.

[0014] The electromagnetic proportional flow valve, wherein the electromagnetic assembly further comprises a magnetic shielding sleeve, the magnetic shielding sleeve is arranged in a barrel shape, the magnetic shielding sleeve is sleeved outside the guide sleeve, one end of the barrel of the magnetic shielding sleeve is sleeved outside one end of the valve body, and the coil is sleeved outside the magnetic shielding barrel.

[0015] The electromagnetic proportional flow valve, wherein the spring seat is in interference fit with the valve body.

[0016] The technical scheme has the advantages that:

[0017] The electromagnetic proportional flow valve has the advantages that: the insertion hole is arranged on the valve body with the sliding channel, the insertion rod is arranged in the insertion hole and extends into the sliding channel, the valve core is arranged to slide in the sliding channel, the sliding groove is arranged on the outer wall of the valve core along the axial direction, and the end of the insertion rod extending into the sliding channel is inserted into the sliding groove. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure diagram of the embodiment of the electromagnetic proportional flow valve of the utility model;

[0019] Figure 2 The structure diagram of the embodiment of the electromagnetic proportional flow valve of the utility model; Figure 1 The enlarged view of the A part in the middle;

[0020] Figure 3 The installation state diagram of the gland, rubber pad and insertion rod of the preferred embodiment of the utility model.

[0021] In the drawings: 1, valve body; 11, sliding channel; 12, insertion hole; 13, oil inlet; 14, adjusting oil port; 15, blocking edge; 2, valve core; 21, sliding groove; 22, oil guide groove; 3, reset spring; 4, spring seat; 41, oil discharge port; 5, electromagnetic assembly; 51, moving iron core; 52, coil; 53, guide sleeve; 6, insertion rod; 61, gland; 62, rubber pad; 7, shell; 8, magnetic isolation sleeve. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects achieved by the utility model easy to understand, the following embodiments are combined with the accompanying drawings to further describe the utility model in detail. Figure 1 to the accompanying drawings Figure 3 The technical scheme of the utility model is described in detail, but the following content is not limited to the utility model.

[0023] Figure 1 The structure diagram of the embodiment of the electromagnetic proportional flow valve of the utility model; Figure 2 The structure diagram of the embodiment of the electromagnetic proportional flow valve of the utility model; Figure 1 The enlarged view of the A part in the middle. Figure 1 The enlarged view of the A part in the middle. Figure 2As shown, the electromagnetic proportional flow valve provided by the embodiment comprises a valve body 1, a valve core 2, a reset spring 3, a spring seat 4, an electromagnetic assembly 5 and a plug rod 6.

[0024] Specifically, a slide 11 is formed on the valve body 1 and extends through both ends of the valve body 1, and the spring seat 4 is arranged at one end of the slide 11. The spring seat 4 forms a limiting structure at one end of the slide 11, thereby providing a bearing basis for the subsequent installation of the reset spring 3. In addition, the valve core 2 is arranged in the slide 11 in a sliding manner, and the movement of the valve core 2 in the slide 11 realizes flow regulation. Furthermore, the reset spring 3 is arranged between one end of the valve core 2 and the spring seat 4, and when the valve core 2 moves towards the spring seat 4, the reset spring 3 can be compressed, so that the reset spring 3 can store energy. When the valve core 2 needs to move away from the spring seat 4, the energy can be released through the reset of the reset spring 3, so that the valve core 2 is reset in the opposite direction by the reset spring 3, thereby meeting the flow regulation requirement. In addition, the electromagnetic assembly 5 is installed at the other end of the valve body 1, and one end of a moving iron core 51 of the electromagnetic assembly 5 abuts against one end of the valve core 2 away from the reset spring 3. That is, the magnetic field generated after the electromagnetic assembly 5 is electrified can act on the moving iron core 51, and the moving iron core 51 pushes the valve core 2 to slide towards the spring seat 4. That is, the electromagnetic assembly 5 and the reset spring 3 act on both ends of the valve core 2 respectively, thereby controlling the movement of the valve core 2, and meeting the use requirement.

[0025] Specifically, a plug hole 12 is further formed on the valve body 1 and extends through the side wall of the valve body 1 in a direction perpendicular to the slide 11, so that one end of the plug hole 12 communicates with the slide 11. In addition, a plug rod 6 is arranged in the plug hole 12, and one end of the plug rod 6 extends into the slide 11. A limiting structure is formed in the slide 11 by the end of the plug rod 6, and a sliding groove 21 is formed on the outer wall of the valve core 2 in the axial direction of the valve core 2. One end of the plug rod 6 extending into the slide 11 is inserted into the sliding groove 21. That is, the plug hole 12 is arranged on the valve body 1, and the plug rod 6 is installed through the plug hole 12, so that one end of the plug rod 6 can extend into the sliding groove 21 of the valve core 2. When the valve core 2 slides in the axial direction, the plug rod 6 slides in the sliding groove 21 to guide the valve core 2 in a straight line, thereby preventing the valve core 2 from rotating circumferentially, avoiding the problems of increased wear or damage of the reset spring 3 due to rotation of the valve core 2 after long-term use, prolonging the service life and reducing the use cost. In addition, the plug rod 6 is installed on the valve body 1 through the plug hole 12, thereby realizing detachable connection of the plug rod 6 and the valve body 1, facilitating separate machining of the plug rod 6 and the valve body 1, and reducing the machining difficulty.

[0026] More specifically, the end face of the rod 6 inserted into the groove 21 is arranged in a spherical shape, making the end of the rod 6 inserted into the groove 21 of the valve core 2 more rounded. This avoids the problem of excessive resistance when the valve core 2 slides due to an excessively large top contact surface, and reduces the impact on the movement of the valve core 2.

[0027] Figure 3 This is a diagram showing the installation state of the pressure cap, rubber gasket, and insertion rod according to a preferred embodiment of the present invention. Figures 1 to 3 As shown, a pressure cap 61 is also installed on the insertion hole 12. The pressure cap 61 is installed on the end of the insertion hole 12 facing away from the connecting slide 11, sealing this end. One end of the insertion rod 6 is also placed against the pressure cap 61, thus confining the insertion rod 6 within the insertion hole 12 and preventing it from slipping out and losing its restraint on the valve core 2. Preferably, the pressure cap 61 and the insertion hole 12 are threaded together. The end of the pressure cap 61 facing away from the insertion rod 6 has an internal hexagonal hole. After installation, the pressure cap 61 is hidden within the insertion hole 12, maintaining the flatness of the outer wall of the valve body 1, facilitating the subsequent installation of a housing on the valve body 1. It also allows the user to easily remove and install the pressure cap 61 using an internal hexagonal wrench, improving assembly efficiency and providing conditions for subsequent replacement of the valve core 2.

[0028] More specifically, a rubber gasket 62 is provided between the gland 61 and the insert rod 6. Because the rubber gasket 62 has a certain elasticity, after the gland 61 is tightened, the gland 61 can press the insert rod 6 by squeezing the rubber gasket 62, so that the rubber gasket 62 can apply a pre-tightening force to the insert rod 6, making the installation of the insert rod 6 more stable and reliable. At the same time, it can also reduce the vibration problem of the insert rod 6 when it is guided by the slide groove 21, improving the performance of the valve. In addition, it can also achieve a seal at the joint between the insert rod 6 and the insertion hole 12, preventing leakage problems.

[0029] More specifically, the end of the insertion hole 12 connecting to the slide rail 11 is arranged in a constricted manner, so that the opening of the insertion hole 12 connecting to the slide rail 11 gradually narrows, thereby forming a restriction. Furthermore, the diameter of the end of the insertion rod 6 located within the insertion hole 12 is set to be larger than the diameter extending into the slide groove 21, making the insertion rod 6 a "T" structure. After the larger diameter end of the insertion rod 6 is located within the insertion hole 12, the step formed between the larger and smaller diameter ends of the insertion rod 6 abuts against the constricted end of the insertion hole 12, thereby preventing the cap 61 and rubber gasket 62 from excessively squeezing the insertion rod 6 and causing the insertion rod 6 to press against the slide groove 21, ensuring that the valve core 2 can always slide normally. In addition, by increasing the diameter of the end of the insertion rod 6 within the insertion hole 12, the contact area between the insertion rod 6 and the insertion hole 12 is larger, further improving the stability of the insertion rod 6 installed on the valve body 1, making the structural design more reasonable.

[0030] More specifically, the oil inlet 13 and the adjusting oil port 14 are arranged at the end of the valve body 1 away from the electromagnetic assembly 5 and spaced apart along the axial direction of the valve body 1, and the communication channel 11 is arranged between the oil inlet 13 and the adjusting oil port 14, so as to realize the flow of oil in the communication channel 11. In addition, the oil discharge port 41 is arranged on the spring seat 4, and the oil guide groove 22 is arranged on the outer wall of the valve core 2. In use, when the valve core 2 moves in the communication channel 11, the oil guide groove 22 connects the oil inlet 13 and the adjusting oil port 14, so that the oil in the oil inlet 13 can enter the communication channel 11 and then enter the adjusting oil port 14 through the oil guide groove 22, thereby realizing the conduction of the oil circuit. In addition, when the valve core 2 moves in the communication channel 11 and the moving stroke continues to change, the oil guide groove 22 on the valve core 2 can connect the oil inlet 13, the adjusting oil port 14 and the oil discharge port 41, so that the oil in the oil inlet 13 can flow out of the adjusting oil port 14 and the oil discharge port 41, thereby meeting the control requirements of different pipeline systems and being more adaptable.

[0031] More specifically, the outer wall of the end of the valve body 1 connected to the electromagnetic assembly 5 is further provided with a ring-shaped stop 15, and the outer shell 7 is further arranged outside the electromagnetic assembly 5. Preferably, the outer shell 7 is a ferrous shell, which can realize external protection of the electromagnetic assembly 5. In addition, one end of the outer shell 7 abuts against the stop 15, and the outer side wall of the outer shell 7 protrudes outward beyond the outer side wall of the stop 15, and the outer wall of the outer shell 7 is provided with external threads, so that the valve can be directly screwed onto the matching carrier through the external threads, thereby facilitating the installation of the valve. In addition, when the outer shell 7 is connected to the installation carrier, the stop 15 can be pressed by the outer shell 7, so that the valve body 1 can also be stably installed on the installation carrier, thereby improving the stability of the valve installation.

[0032] More specifically, the electromagnetic assembly 5 for driving the valve core 2 to move includes the coil 52 and the guide sleeve 53 in addition to the moving iron core 51. In installation, one end of the coil 52 is sleeved on one end of the valve body 1, thereby realizing the installation of the coil 52 in the axial direction. In addition, the guide sleeve 53 is embedded in the coil 52 and arranged coaxially with the valve body 1, and the moving iron core 51 is slidably arranged in the guide sleeve 53, so that the moving iron core 51 can be used in cooperation with the coil 52, and the movement of the moving iron core 51 can be guided by the guide sleeve 53, thereby improving the stability of the movement of the moving iron core 51. In addition, the movement direction of the moving iron core 51 is consistent with the movement direction of the valve core 2, thereby providing power for the movement of the valve core 2. It should be pointed out that the traditional electromagnetic valve on the market usually also has the structure of the coil 52, so that the coil 52 in the present embodiment can directly use the existing coil 52 structure, thereby meeting the use requirements. Therefore, no further description is given here.

[0033] More specifically, the electromagnetic assembly 5 comprises the magnetic isolation sleeve 8 in addition to the moving iron core 51, the coil 52 and the guide sleeve 53, and the magnetic isolation sleeve 8 is arranged in a barrel shape so as to have an inner cavity. During installation, the magnetic isolation sleeve 8 is sleeved outside the guide sleeve 53 and the barrel opening end of the magnetic isolation sleeve 8 is sleeved outside one end of the valve body 1, thereby wrapping the guide sleeve 53 and enabling the guide sleeve 53 to be stably installed on one end of the valve body 1, i.e., to be used as a support structure for the installation of the guide sleeve 53. Meanwhile, the coil 52 is sleeved outside the magnetic isolation barrel, so that the coil 52 and the moving iron core 51 can be located on the two sides of the magnetic isolation barrel, respectively, thereby meeting the magnetic isolation requirement.

[0034] More specifically, the spring seat 4 installed in the sliding channel 11 is in interference fit with the valve body 1, i.e., the spring seat 4 is pressed into the sliding channel 11 of the valve body 1, thereby realizing stable installation of the spring seat 4 on the valve body 1 and facilitating installation.

[0035] The electromagnetic proportional flow valve provided by the embodiment comprises a valve body 1, a valve core 2, a return spring 3, a spring seat 4, an electromagnetic assembly 5 and a plug rod 6. A plug hole 12 is formed in the valve body 1 with the sliding channel 11, the spring seat 4 and the electromagnetic assembly 5 are arranged on the valve body 1 and located at the two ends of the sliding channel 11, respectively, the valve core 2 is slidingly arranged in the sliding channel 11 and located between the spring seat 4 and the electromagnetic assembly 5, the return spring 3 is arranged between the spring seat 4 and the valve core 2, and the valve core 2 abuts against the moving iron core 51 of the electromagnetic assembly 5. The valve core 2 is moved in the sliding channel 11 by the electromagnetic assembly 5 and the return spring 3 acting on the valve core 2, and the plug rod 6 is installed in the plug hole 12 and extends into the sliding channel 11 at one end. A sliding groove 21 is formed in the outer side wall of the valve core 2 along the axial direction and cooperates with the one end of the plug rod 6 extending into the sliding channel 11, so that the valve core 2 can be guided by the cooperation of the plug rod 6 and the sliding groove 21 when the valve core 2 moves along the axial direction, and the circumferential rotation of the valve core 2 is limited, thereby avoiding the problems of excessive wear or damage of the return spring 3 due to the circumferential rotation of the valve core 2 after long-term use, prolonging the service life and reducing the use cost.

[0036] The above is only the preferred embodiment of the utility model, and does not limit the implementation and protection scope of the utility model. For those skilled in the art, it should be realized that any equivalent replacement and obvious change made according to the contents of the utility model specification and drawings should be included in the protection scope of the utility model.

Claims

1. An electromagnetic proportional flow valve, comprising a valve body, a valve core, a return spring, a spring seat, and an electromagnetic assembly, wherein the valve body has a through-type slide rail, a spring seat is disposed at one end of the slide rail, the valve core is slidably disposed within the slide rail, and a return spring is disposed between one end of the valve core and the spring seat, the electromagnetic assembly is mounted at the other end of the valve body, and one end of the moving iron core of the electromagnetic assembly abuts against the end of the valve core opposite to the return spring, characterized in that... It also includes a plug rod. The valve body has a hole that penetrates the side wall of the valve body in a direction perpendicular to the slide. The plug rod is installed in the hole, and one end of the plug rod extends into the slide. At the same time, a groove is formed on the outer wall of the valve core along its axial direction. The end of the plug rod that extends into the slide is inserted into the groove.

2. The electromagnetic proportional flow valve according to claim 1, characterized in that, The end face of the rod that is inserted into the groove is spherically shaped.

3. The electromagnetic proportional flow valve according to claim 1, characterized in that, It also includes a pressure cap, which is installed on the end of the socket opposite to the end that communicates with the slide, and one end of the plug abuts against the pressure cap.

4. The electromagnetic proportional flow valve according to claim 3, characterized in that, A rubber pad is provided between the pressure cap and the insertion rod.

5. The electromagnetic proportional flow valve according to claim 1, characterized in that, The insertion hole is arranged in a constricted manner at one end connected to the slide rail, and the diameter of the end of the insertion rod located in the insertion hole is larger than the diameter extending into the slide rail.

6. The electromagnetic proportional flow valve according to claim 1, characterized in that, The valve body has an oil inlet and an adjusting oil port that are spaced apart along the axial direction of the valve body at one end away from the electromagnetic component. The spring seat has an oil outlet, and the outer wall of the valve core has an oil guide groove. When the valve core moves in the slide, the oil guide groove connects the oil inlet and the adjusting oil port or connects the oil inlet, the adjusting oil port and the oil outlet.

7. The electromagnetic proportional flow valve according to claim 1, characterized in that, A retaining rim is provided on the outer wall of one end of the valve body connected to the electromagnetic component. Meanwhile, an outer shell is provided on the electromagnetic component, and one end of the outer shell abuts against the retaining rim. The outer side wall of the outer shell protrudes outward from the outer side wall of the retaining rim.

8. The electromagnetic proportional flow valve according to claim 1, characterized in that, The electromagnetic component includes a coil and a guide sleeve. One end of the coil is sleeved on one end of the valve body. The guide sleeve is embedded in the coil and arranged coaxially with the valve body. The moving iron core is slidably disposed in the guide sleeve.

9. The electromagnetic proportional flow valve according to claim 8, characterized in that, The electromagnetic component also includes a magnetic shielding sleeve, which is arranged in a barrel shape. The magnetic shielding sleeve is fitted outside the guide sleeve, and one end of the barrel opening of the magnetic shielding sleeve is fitted outside one end of the valve body. At the same time, the coil is fitted outside the magnetic shielding barrel.

10. The electromagnetic proportional flow valve according to claim 1, characterized in that, The spring seat and the valve body are interference fit.

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