Solenoid control valve with check function

Abstract

The invention discloses an electromagnetic regulating valve with a check function. The invention provides a valve with flow regulating and check functions, which can effectively regulate the flow in the valve body. Since the valve disc group has different lengths and cone angles, the flow regulation can be more precise, and the check function can prevent the medium from flowing back when necessary. At the same time, the mesh structure of the base of the valve disc can effectively reduce the instability of the flow field movement and play a rectifying effect.

Description

Technical Field

[0001] The invention relates to an electromagnetic control valve belonging to the technical field of fluid control valves, and in particular to an electromagnetic regulating valve with a check function. Background Art

[0002] The regulating valve is also called the control valve. Its main function is to change the flow rate, pressure and other process parameters of the fluid by means of power operation in the process industry.

[0003] In the process of using the regulating valve, at a small opening, the ordinary regulating valve cannot achieve more precise regulation when regulating the flow due to the single valve disc and limited regulation accuracy. At the same time, since the ordinary control valve can only simply adjust the flow, pressure and other parameters in the valve body, when the backflow phenomenon occurs in the valve body, it will cause adverse consequences. Therefore, in response to the needs of the existing actual use process, a new electromagnetic regulating valve with a check function is invented. Summary of the invention

[0004] In order to solve the problems existing in the background technology, the present invention provides an electromagnetic regulating valve with a check function, which can adjust the flow rate through a simple circuit, prevent the medium from flowing back, and achieve a rectifying effect.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] The present invention comprises a left-end valve body, a valve flap, an electromagnetic coil, an iron core, an annular permanent magnet, an annular spring, a right-end valve body, a sealing ring, an orifice plate and a valve flap base; the left-end valve body and the right-end valve body are connected by bolts and nuts, and the flow passages of the left-end valve body and the right-end valve body are coaxially connected; an annular cavity is provided inside the side wall of the left-end valve body close to one end of the right-end valve body, and an iron core wound with an electromagnetic coil is placed in the cavity, and the flow passage section of the left-end valve body close to one end of the right-end valve body is processed and arranged into an orifice plate; an annular groove connected to the flow passage is provided on the inner side wall of the right-end valve body close to one end of the left-end valve body, and an annular permanent magnet and an annular spring are placed in the annular groove in sequence from close to the left-end valve body to far away from the left-end valve body, and the annular spring is connected between the groove wall of the annular groove on the side far away from the left-end valve body and the annular permanent magnet, a circular valve flap group base is fixedly installed in the middle hole of the annular permanent magnet, and a valve flap is installed on the end face of the valve flap group base close to the left-end valve body.

[0007] The valve flap group base is mainly composed of a number of circular bases connected by a support frame. The circular bases are arranged in multiple circles. The diameters of the circular bases in each circle gradually decrease from the outside to the inside in the radial direction, and the diameters of the circular bases on each circle are the same; the circular base of the outermost circle is fixedly connected to the hole wall of the middle hole of the annular permanent magnet through a support frame; each circular base is equipped with a valve flap, and all the valve flaps form a valve flap group. The valve flap includes a boss and a flow-blocking cylinder, one end of the flow-blocking cylinder is installed in the circular base, and the other end of the flow-blocking cylinder is connected to a boss after passing through the hole of the orifice plate; the axial length of the valve flap on the circular base of each circle gradually shortens from the outside to the inside in the radial direction.

[0008] The length of the flow-blocking cylinder on each circle of the circular base gradually increases from the center to the periphery, and the height of the boss on each circle of the circular base gradually increases from the center to the periphery. The boss is truncated cone-shaped, and the inclination angle of the conical surface of the boss end on each circle of the circular base gradually decreases from the center to the periphery.

[0009] The position distribution of each circular base on the valve disc is consistent with the position distribution of each hole of the orifice plate.

[0010] A through hole is provided on the outer side of the cavity of the left end valve body, and the through hole is used to lead out the output wire of the electromagnetic coil and connect it to the external control circuit.

[0011] The right end flange of the left end valve body and the left end flange of the right end valve body are matched and installed oppositely, and are connected by bolts and nuts. The end face flanges of the left end valve body and the right end valve body are sealed and connected by a sealing ring.

[0012] Beneficial effects of the present invention:

[0013] The present invention controls the position of the permanent magnet and the valve disc group through an external circuit, and prevents the medium from flowing back through the cooperation of the orifice plate, the spring and the valve disc group. Compared with the traditional single valve disc, the valve disc group structure is now adopted. During the adjustment process, the flow rate can be more accurately regulated to achieve precise regulation and rapid check. It can be widely used in chemical industry, light industry, water conservancy, petroleum and other fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a stereogram of the present invention.

[0015] Figure 2 It is a cross-sectional view of the present invention.

[0016] Figure 3 It is a schematic diagram of the appearance of the valve disc group of the present invention.

[0017] Figure 4 It is a right side view of the valve disc group of the present invention.

[0018] Figure 5 It is a front view of the valve flap group of the present invention.

[0019] Figure 6 It is a cross-sectional view of the left end valve body of the present invention.

[0020] Figure 7 It is a cross-sectional view of the valve body of the present invention when it is at its maximum opening.

[0021] In the figure: 1-left end valve body; 2-valve disc; 3-electromagnetic coil; 4-iron core; 5-bolt; 6-nut; 7-annular permanent magnet; 8-annular spring; 9-right end valve body; 10-sealing ring; 11-through hole; 12-orifice plate; 21-boss; 22-blocking cylinder; 23-support frame; 24-valve disc group base. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1 and Figure 2 As shown, the present invention includes a left valve body 1, a valve flap 2, an electromagnetic coil 3, an iron core 4, an annular permanent magnet 7, an annular spring 8, a right valve body 9, a sealing ring 10, an orifice plate 12 and a valve flap base 24; the right end flange of the left valve body 1 and the left end flange of the right valve body 9 are matched and installed opposite to each other, connected by bolts 5 and nuts 6 to form a total valve body, and the flow channels of the left valve body 1 and the right valve body 9 are coaxially connected; the end face flanges of the left valve body 1 and the right valve body 9 are sealed and connected by a sealing ring 10, and the sealing ring is made of fluororubber material. The inner hole of the flange connector on one side of the valve body is used as a water inlet, and the inner hole of the flange connector on the other side of the valve body is used as an outlet. In the specific implementation, the fluid flows from the left valve body 1 to the right valve body 9.

[0024] An annular cavity is provided inside the side wall of the left end valve body 1 near the end of the right end valve body 9, and an iron core 4 with an electromagnetic coil 3 is placed in the cavity. The flow channel section of the left end valve body 1 near the end of the right end valve body 9 is processed into an orifice plate 12; an annular groove connected to the flow channel is provided on the inner side wall of the right end valve body 9 near the end of the left end valve body 1, and an annular permanent magnet 7 and an annular spring 8 are placed in the annular groove in sequence from the left end valve body 1 to the direction away from the left end valve body 1, that is, the annular permanent magnet 7 is arranged in one side of the annular groove near the left end valve body 1, and the annular spring 8 is arranged in one side of the annular groove away from the left end valve body 1. The annular spring 8 is connected between the groove wall of the annular groove away from the left end valve body 1 and the annular permanent magnet 7, and is placed on the side of the annular permanent magnet away from the electromagnetic coil. A circular valve disc group base 24 is fixedly installed in the middle hole of the annular permanent magnet 7, and a valve disc 2 is installed on the end face of the valve disc group base 24 near the left end valve body 1.

[0025] The power control device is located in the outer cavity at the orifice plate of the left end valve body 1, and is used to control the horizontal movement of the annular permanent magnet 7 nested inside the right end valve body 9. It also includes a non-return regulating body for installation inside the valve body, which includes: an orifice plate structure nested in the left end valve body 1, a valve disc group matching the orifice plate structure inside the left end valve body 1, an iron core 4 with an electromagnetic coil 3 wound around it fixed in the cavity of the left end valve body 1, an annular permanent magnet 7 nested in the annular groove of the right end valve body 9, and an annular spring 8 placed in the track of the annular permanent magnet 7 facing away from the electromagnetic coil 3, wherein the valve disc group is composed of a valve disc 2 composed of a flow-blocking cylinder 22 of different lengths and a boss 21 of a cone angle, and the valve disc group is installed on a valve disc group base 24 at the bottom of the valve disc group, and the diameter of the valve disc group base 24 is larger than the valve disc 2. The valve disc group base 24 is connected to each other by a support frame 23 to form a mesh structure, and the overall mesh structure is connected to the annular permanent magnet 7 in the track from top to bottom.

[0026] The annular spring 8 is used to control the movement of the entire valve flap group. The annular spring 8 is placed on the other side of the electromagnetic coil 3, so that the valve flap 2 is in a closed state under normal conditions, which is beneficial to improving the sealing performance of the overall structure.

[0027] like Figure 3 , Figure 4 and Figure 5 As shown, the valve disc group base 24 is mainly composed of a number of circular bases connected by a support frame 23, and each circular base is arranged in multiple circles. The diameter of the circular base of each circle gradually decreases from the outside to the inside in the radial direction, and the diameter of each circular base on each circle is the same; a regular multi-circle mesh structure is formed, and two circular bases adjacent in the circumferential direction / radially are connected by the support frame 23, and the circular base of the outermost circle is fixedly connected to the hole wall of the middle hole of the annular permanent magnet 7 through the support frame 23; each circular base is equipped with a valve disc 2, and all valve discs 2 form a valve disc group, and the valve disc 2 includes a boss 21 at the top and a flow-blocking cylinder 22 in the middle, one end of the flow-blocking cylinder 22 is installed in the circular base, and the flow-blocking cylinder 22 is arranged on the side close to the left end valve body 1, and the other end of the flow-blocking cylinder 22 passes through the hole of the orifice plate 12 and is connected to a truncated cone-shaped boss 21; the axial length of the valve disc 2 on the circular base of each circle from the outside to the inside in the radial direction gradually becomes shorter. The circular permanent magnet 7 cooperates with the electromagnetic coil 3 in the cavity of the left end valve body 1 to adjust the position of the valve flap group base 24 and the valve flap group thereon relative to the orifice plate 12, thereby realizing the flow regulation and non-return function of the valve.

[0028] The length of the flow-blocking cylinder 22 on each circle of the circular base gradually increases from the center to the periphery, and the height of the boss 21 on each circle of the circular base gradually increases from the center to the periphery.

[0029] The boss 21 is a truncated cone-shaped boss 21 , and the inclination angle of the conical surface at the end of the boss 21 on the circular base of each circle gradually decreases from the center to the periphery.

[0030] The position distribution of each circular base on the valve disc 2 is consistent with the position distribution of each hole of the orifice plate 12, and the orifice plate 12 is placed corresponding to the right end valve disc 2. The hole diameter of the orifice plate 12 is the same as the outer diameter of the flow blocking cylinder 22 and the boss 21.

[0031] like Figure 6 As shown, a through hole 11 is provided on the outer side of the cavity of the left end valve body 1, and the through hole 11 is used to lead out the output wire of the electromagnetic coil 3 and connect it to the external control circuit.

[0032] The right end flange of the left end valve body 1 and the left end flange of the right end valve body 9 are matched and installed opposite to each other, and are connected by bolts 5 and nuts 6.

[0033] The end face flanges of the left valve body 1 and the right valve body 9 are sealed and connected via a sealing ring 10. The sealing ring is made of fluororubber material.

[0034] Working principle: The present invention aims to combine the electromagnetic effect and the design of the valve structure with the effect of the annular spring 8, and control the opening and closing and non-return functions of the valve by controlling whether the electromagnetic coil 3 is energized, and change the magnetic field strength of the electromagnet 4 by controlling the current in the electromagnetic coil 3, thereby controlling the distance between the right end permanent magnet 7 and the valve disc 2 and the left end orifice plate 12, thereby controlling the flow rate. Due to the large number of valve discs 2, accurate control of the flow rate can be achieved, and the tail mesh structure can reduce the turbulence of the fluid in the valve and play a role in rectification. The structure is simple and easy to maintain.

[0035] The present invention adopts the above-mentioned electromagnetic regulating valve with non-return function. The process of the regulating method is as follows:

[0036] In the initial normal state, the valve is in a closed state, and the valve flap 2 at the center is closely fitted with the orifice plate 12 at the center. The annular permanent magnet 7 is closely fitted with the side wall of the cavity close to the electromagnetic coil 3.

[0037] Opening and regulating function: the electromagnetic coil 3 in the cavity of the left valve body 1 is energized, a magnetic field is generated in the electromagnetic coil 3, and the annular permanent magnet 7 in the right valve body 9 is acted upon by the repulsive force of the magnetic field generated by the electromagnetic coil 3, so that the annular permanent magnet 7 drives the entire valve flap group to move in the direction of the fluid moving away from the electromagnetic coil 3, so that the valve flaps on the central circular base of the valve flap group are separated from the holes in the central circle of the orifice plate 12, so that a gap is formed between the valve flap group and the orifice plate 12 and can be adjusted;

[0038] The axial position of the valve disc 2 is changed by changing the current of the energized coil 3, so that the fluid enters from the valve body inlet and flows to the outlet through the gap between the valve disc group and the orifice plate 12, and the valve discs 2 on different radial circles of the circular base are adjusted to be separated from the holes on the corresponding radial circles of the orifice plate 12. The gaps at different circle positions are changed to achieve the opening size adjustment, thereby realizing the opening and opening adjustment of the valve.

[0039] Check function: When the electromagnetic coil 3 is powered off, the annular permanent magnet 7 loses the magnetic field repulsion force applied by the electromagnetic coil 3 in the cavity of the left end valve body 1, and moves axially toward the orifice plate 12 under the action of the annular spring 8 until the annular permanent magnet 7 fits the groove wall of the annular groove near the left end valve body 1, that is, until it moves to the position as shown in FIG. Figure 2 The leftmost end of the annular groove shown is such that the cylindrical surface of the valve disc in the center circle is in close contact and sealed with the holes in the center circle of the orifice plate 12 to prevent the flow of fluid.

[0040] The external circuit generates a magnetic field by energizing the electromagnetic coil 3, controlling the right end circular permanent magnet 7 to move left and right, and controls the valve opening by adjusting the position of the circular permanent magnet 7 in the track. The circular spring 8 in the track plays a role in accurately controlling the position of the circular permanent magnet 7. Specific embodiment:

[0042] like Figure 7 As shown, when the electromagnetic coil 3 is energized, the electromagnetic coil 3 generates an electromagnetic field with a magnetic field strength, which generates a repulsive force on the annular permanent magnet 7 of the right-end valve body 9, so that the annular permanent magnet 7 moves toward the right-end valve body, driving the valve flap group base 24 connected to the annular permanent magnet 7 to move toward the right-end valve body; when the current continues to increase, the annular permanent magnet 7 moves toward the right-end valve body and continuously compresses the annular spring 8. When the annular spring 8 is compressed to the point where it cannot be compressed, the position of the valve flap group base 24 is the farthest distance that the valve flap group base 24 can reach, and the valve body is at its maximum opening.

[0043] like Figure 2 As shown, when the electromagnetic coil 3 is not energized, the annular permanent magnet 7 of the right end valve body 9 and the valve disc group base 24 move to the left due to the force of the annular spring 8 and the water flow, and finally the annular permanent magnet 7 fits with the left end wall of the annular groove. At this time, the top of the choke cylinder 22 of the valve disc at the center of the valve disc 2 fits with the circular hole at the center of the orifice plate 12, and the choke cylinders 22 of the other valve discs also fit with the circular holes at the corresponding positions of the orifice plate 12, thereby realizing the flow direction control and sealing control of the valve.

[0044] During specific implementation, the magnetic pole direction of the annular permanent magnet 7 and the direction of the current of the electromagnetic coil 3 can be adjusted accordingly.

[0045] In this embodiment, the length of each valve disc of the valve disc 2 is further limited to gradually increase from the center to the periphery, the height of the front end boss 21 of each valve disc gradually increases from the center to the periphery, and the inclination angle gradually decreases from the center to the periphery. The diameter of the orifice plate 12 and the valve disc gradually increases from the center to the periphery.

[0046] It can be seen that the technical effect of the present invention is remarkable, and it can realize accurate control of valve flow and prevent the backflow of the medium in the valve, and at the same time, it can achieve a good sealing effect and reduce the instability of the fluid in the valve, and realize the effect of rectification. The structure is simple and easy to maintain.

Claims

1. A solenoid regulating valve with a check function, characterized in that: The valve body comprises a left valve body (1), a valve disc (2), an electromagnetic coil (3), an iron core (4), a circular permanent magnet (7), an circular spring (8), a right valve body (9), a sealing ring (10), an orifice plate (12) and a valve disc group base (24); the left valve body (1) and the right valve body (9) are connected by bolts (5) and nuts (6), and the flow passages of the left valve body (1) and the right valve body (9) are coaxially connected; an annular cavity is provided inside the side wall of the left valve body (1) close to one end of the right valve body (9), and the iron core (4) wound with the electromagnetic coil (3) is placed in the cavity; the left valve body (1) is close to the right valve body (9) The flow channel cross section at one end is processed and set to be an orifice plate (12); an inner wall of the right end valve body (9) close to the left end valve body (1) is provided with an annular groove connected to the flow channel, and a circular ring-shaped permanent magnet (7) and a circular ring-shaped spring (8) are placed in the annular groove in a direction from close to the left end valve body (1) to far away from the left end valve body (1). The circular ring-shaped spring (8) is connected between the groove wall of the annular groove on the side away from the left end valve body (1) and the circular ring-shaped permanent magnet (7), and a circular valve disc group base (24) is fixedly installed in the middle hole of the circular ring-shaped permanent magnet (7). The valve disc (2) is installed on the end surface of the valve disc group base (24) close to the left end valve body (1).

2. The electromagnetic regulating valve with a check function according to claim 1, characterized in that: The valve flap group base (24) is mainly composed of a number of circular bases connected by a support frame (23), each circular base is arranged in a plurality of circles, the diameter of each circular base gradually decreases from the outside to the inside in the radial direction, and the diameter of each circular base on each circle is the same; the circular base of the outermost circle is fixedly connected to the hole wall of the middle hole of the annular permanent magnet (7) through the support frame (23); each circular base is equipped with a valve flap (2), and all the valve flaps (2) form a valve flap group, the valve flap (2) comprises a boss (21) and a flow-blocking cylinder (22), one end of the flow-blocking cylinder (22) is installed in the circular base, and the other end of the flow-blocking cylinder (22) is connected to the boss (21); the axial length of the valve flap (2) on each circular base from the outside to the inside in the radial direction gradually decreases.

3. The electromagnetic regulating valve with a check function according to claim 1, characterized in that: The length of the flow-blocking cylinder (22) on the circular base of each circle gradually increases from the center to the periphery, and the height of the boss (21) on the circular base of each circle gradually increases from the center to the periphery.

4. The electromagnetic regulating valve with a check function according to claim 3, characterized in that: The boss (21) is in the shape of a truncated cone, and the inclination angle of the conical surface at the end of the boss (21) on the circular base of each circle gradually decreases from the center to the periphery.

5. The electromagnetic regulating valve with a check function according to claim 1, characterized in that: The position distribution of each circular base on the valve flap (2) is consistent with the position distribution of each hole of the orifice plate (12).

6. The electromagnetic regulating valve with a check function according to claim 1, characterized in that: A through hole (11) is formed on the outer side of the cavity of the left end valve body (1), and the through hole (11) is used to lead out the output wire of the electromagnetic coil (3) and connect it to an external control circuit.

7. The electromagnetic regulating valve with a check function according to claim 1, characterized in that: The right end flange of the left end valve body (1) and the left end flange of the right end valve body (9) are matched and installed facing each other, and are connected by bolts (5) and nuts (6).

8. The electromagnetic regulating valve with a check function according to claim 1, characterized in that: The end face flanges of the left valve body (1) and the right valve body (9) are sealed and connected via a sealing ring (10).

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