CN102102767B - Directly operated type general electromagnetic valve - Google Patents

Abstract

The invention discloses a directly operated type general electromagnetic valve which comprises a valve body, wherein the valve body is provided with an electromagnetic open and close mechanism and a valve rod internally; the valve body is provided with an input interface and an output interface; the input interface is connected with an input chamber internally; the output interface is connected with an output chamber internally; the valve rod is a cylindrical hollow body and is provided with two partition walls, thus a hollow body in the valve rod is divided into a left section, a middle section and a right section; the middle section of the valve rod is provided with a valve rod guiding hole and a valve hole; at least two seal sleeves are arranged between the valve rod and the valve body; the inner edge of each seal sleeve is fixedly connected at the periphery of the valve rod; and the outer edge of each seal sleeve is fixedly connected at the periphery of an inner cavity wall in the valve body, and the seal sleeves are limited by a limit ring. The directly operated type general electromagnetic valve disclosed by the invention has the advantages of high-voltage resistance, stable working, small pressure applied by electromagnets, large output, small and uniform force of open and close of the valve, particles of solid state prevention, favorable seal property, abrasion prevention and long service life.

Description

Direct acting general purpose solenoid valve

technical field

The invention relates to a valve, in particular to a direct-acting universal solenoid valve, which is used in a pipe network as a valve for controlling gaseous or liquid state.

Background technique

Currently known direct-acting solenoid valves at home and abroad have very low working pressures, and their fluid working pressure ranges are limited to vacuum, small negative pressure, zero pressure and very low pressure states. In addition, its valve through hole is restricted and cannot be enlarged. The step-by-step solenoid valve and the pilot solenoid valve also have strict requirements on the fluid pressure, which limits the versatility of the solenoid valve under a wide range of pressure, so basically a certain range of pressure requires a special structure of the valve. Its structure is complex and costly, and its performance is not satisfactory. The sealing performance of the valve is uneven, and it is easily affected by solid particles in the fluid. In addition, the opening of the valve cannot be continuously adjusted, and only electric valves can be used.

Contents of the invention

Aiming at the above-mentioned problems in the prior art, the purpose of the present invention is to provide a direct-acting general-purpose solenoid valve, which can withstand high pressure, work stably, have small electromagnetic pressure, large output, and small and uniform valve opening and closing force. , and can prevent solid particles.

The technical solution adopted by the present invention to achieve its purpose: a direct-acting universal solenoid valve, including a valve body, an electromagnetic opening and closing mechanism and a valve stem are arranged in the valve body, an input interface and an output interface are arranged on the valve body, and the input interface is connected to the input chamber. The output interface is connected to the output cavity. The valve stem is a cylindrical hollow body with two partitions inside, so that the hollow body in the valve stem is divided into three sections: left, middle and right; the middle section of the valve stem is provided with a valve stem introduction hole and Valve hole; there are at least two sealing sleeves between the valve stem and the valve body, the inner edge of the sealing sleeve is fixed on the periphery of the valve stem, the outer edge of the sealing sleeve is fixed on the periphery of the inner wall of the valve body, and the sealing sleeve is limited by a limit ring. bit.

Three sealing sleeves are arranged between the valve stem and the valve body, and the cavity formed between the first sealing sleeve and the second sealing sleeve is an input cavity, which communicates with the input interface; between the second sealing sleeve and the third sealing sleeve The formed cavity is an output cavity, which communicates with the output interface; the valve stem introduction hole is long and arranged around the valve stem between the inner edge of the first sealing sleeve and the inner edge of the second sealing sleeve; the valve The hole is also elongated, arranged around the valve stem between the inner edge of the second sealing sleeve and the inner edge of the third sealing sleeve; the electromagnetic opening and closing mechanism is arranged at one end of the valve stem; the end of the valve body is provided with a balance through hole , Equilibrium diversion holes are set on the valve body. The electromagnetic opening and closing mechanism includes an electromagnetic coil and an iron core, the iron core is fixedly connected to the end of the valve stem, and a closing spring is arranged in the center of the electromagnetic coil.

Four sealing sleeves are arranged between the valve stem and the valve body, and two output interfaces are arranged on the valve body, and the cavity formed between the first sealing sleeve and the second sealing sleeve is an input cavity, which communicates with the input interface; The cavity formed between the second sealing sleeve and the third sealing sleeve is the first output cavity, which communicates with the first output interface; the cavity formed between the first sealing sleeve and the fourth sealing sleeve is the second output cavity, It communicates with the second output interface; the valve stem introduction hole is circular and is arranged around the valve stem between the inner edge of the first sealing sleeve and the inner edge of the third sealing sleeve; the valve hole is also circular and arranged in rows Two rows, one of which is arranged around the valve stem between the inner edge of the second sealing sleeve and the inner edge of the third sealing sleeve, and the other row is arranged around the valve stem between the inner edge of the first sealing sleeve and the inner edge of the fourth sealing sleeve Two sets of electromagnetic opening and closing mechanisms are arranged at both ends of the valve stem; balance through holes are respectively set at both ends of the valve body, and balance diversion holes are set on the valve body. The electromagnetic opening and closing mechanism includes an electromagnetic coil and an iron core, and the iron core is fixedly connected to the end of the valve stem respectively.

There are two sealing sleeves between the valve stem and the valve body, and the cavity formed between the first sealing sleeve and the second sealing sleeve is an input cavity, which communicates with the input interface; The cavity forms an output cavity, which communicates with the output interface; the first sealing sleeve and the inner cavity on the right side of the valve body form a balance cavity, and the balance cavity is connected to the output interface through a balance bypass pipe; the valve stem introduction hole is a long strip , arranged around the valve stem between the inner edge of the first sealing sleeve and the inner edge of the second sealing sleeve; the valve hole is also elongated, arranged on the left side of the inner edge of the second sealing sleeve; the upper part of the valve stem 1. Balance diversion holes are arranged on the lower section; the end of the valve stem is provided with an electromagnetic opening and closing mechanism. The electromagnetic opening and closing mechanism is arranged at one end of the valve stem, and the electromagnetic opening and closing mechanism includes an electromagnetic coil and an iron core, the iron core is fixedly connected to the end of the valve stem, and a closing spring is arranged in the center of the electromagnetic coil.

There are two sealing sleeves between the valve stem and the valve body, and the cavity formed between the first sealing sleeve and the second sealing sleeve is an input cavity, which communicates with the input interface; The cavity forms an output cavity, which communicates with the output interface; the first sealing sleeve and the inner cavity on the right side of the valve body form a balance cavity, and the balance cavity is connected to the output interface through a balance bypass pipe; the introduction hole of the valve stem is circular, Arranged around the valve stem between the inner edge of the first sealing sleeve and the inner edge of the second sealing sleeve; the valve hole is also circular and arranged on the left side of the inner edge of the second sealing sleeve; the upper and lower sections of the valve stem Balance diversion holes are arranged on the top; two sets of electromagnetic opening and closing mechanisms are arranged at both ends of the valve stem. The electromagnetic opening and closing mechanism includes an electromagnetic coil and an iron core, and the iron core is fixedly connected to the end of the valve stem respectively.

Beneficial effects of the present invention:

(1) High pressure resistance, that is, the fluid pressure of this valve can be very high.

(2) The work is stable, the electromagnetic pressure is small, and both are relatively energy-saving and energy-saving.

(3) The output is large, and the size of the valve hole can be set at will.

(4) The opening and closing force of the valve is small, uniform and constant.

(5) Anti-wear, anti-solid particles, long life.

(6) Excellent sealing performance.

(7) The opening and closing speed is fast.

(8) The working energy efficiency is high, and the structure is simple, and the cost is low.

Description of drawings

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a schematic sectional view of a structure of Embodiment 1 of the present invention;

Fig. 2 is a schematic sectional view of the second embodiment of the present invention;

Fig. 3 is a schematic sectional view of the third embodiment of the present invention;

Fig. 4 is a schematic sectional view of the fourth embodiment of the present invention.

In the figure 1. Valve body, 2. Balance diversion hole, 3. Output interface, 4. Balance bypass pipe, 5. Valve stem, 6. Partition, 7. Valve stem inlet hole, 8-1, First sealing sleeve , 8-2, second sealing sleeve, 8-3, third sealing sleeve, 8-4, fourth sealing sleeve, 9, limit ring, 10, valve hole, 11, input interface, 12, iron core, 13 . Electromagnetic coil, 14. Closing spring, 15. Balance through hole, 16. First output interface, 17. Second output interface.

Detailed ways

The direct-acting general solenoid valve mainly includes a valve body 1, an electromagnetic opening and closing mechanism and a valve stem 5 are arranged in the valve body 1, an input port 11 and an output port 3 are arranged on the valve body 1, the input port is connected to the input cavity, and the output port is connected to the Connected to the output chamber, the valve stem 5 is a cylindrical hollow body with two partitions 6 inside, so that the inner hollow body of the valve stem is divided into three sections: left, middle and right; the middle section of the valve stem is provided with a valve stem introduction hole 7 and a valve hole 10. There are two sealing sleeves between the valve stem and the valve body. The inner edge of the sealing sleeve is fixed to the periphery of the valve stem, and the outer edge of the sealing sleeve is fixed to the periphery of the inner wall of the valve body. The sealing sleeve is limited by the limit ring 9. . Embodiments of the present invention are described below.

Embodiment one

Referring to Fig. 1, three sealing sleeves are arranged between the valve stem 5 and the valve body 1 in this embodiment, the inner edge of the sealing sleeve is affixed to the periphery of the valve stem, the outer edge of the sealing sleeve is affixed to the periphery of the inner wall of the valve body, and the limit The position ring 9 is space-limited to the sealing sleeve. An input cavity is formed between the first sealing sleeve 8-1 and the second sealing sleeve 8-2, and the cavity communicates with the input interface 11; an output cavity is formed between the second sealing sleeve 8-2 and the third sealing sleeve 8-3, The cavity is connected with the output interface 3; the middle section of the valve stem 5 is provided with a valve stem introduction hole 7, which is elongated and arranged around the valve stem between the inner edge of the first sealing sleeve and the inner edge of the second sealing sleeve; Valve hole 10 is also arranged in the middle section of valve stem 5, and this hole is also elongated, and its position is around the valve stem between the inner edge of the second sealing sleeve and the inner edge of the third sealing sleeve. The electromagnetic opening and closing mechanism is arranged at one end of the valve stem 5; it is mainly composed of an electromagnetic coil 13 and an iron core 12, the iron core 12 is fixedly connected to the end of the valve stem, and a closing spring 14 is arranged in the center of the electromagnetic coil. The end of the valve body is provided with a balance through hole 15, and the valve body is provided with a balance diversion hole 2. In this example, the valve is in a closed state, and the second sealing sleeve 8-2 closes the valve hole 10. When the electromagnetic opening and closing mechanism is powered on, the electromagnetic coil 13 produces a magnetic attraction to pull the iron core 12 (this magnetic attraction force needs to be greater than the elastic force of the closing spring 14), the valve stem moves to the left, and the valve hole 10 is opened. The purpose of designing the balance through hole 15 is to make the internal and external pressure of the valve stem tend towards balance, so that the valve stem can move freely.

Embodiment two

Referring to Fig. 2, four sealing sleeves are arranged between the valve stem 5 and the valve body 1 in this embodiment, the inner edges of the sealing sleeves are affixed to the periphery of the valve stem, and the outer edges of the sealing sleeves are affixed to the periphery of the inner cavity wall of the valve body. The position ring 9 is space-limited to the sealing sleeve. The valve body is provided with a first output port 16 and a second output port 17 , and an input chamber is formed between the first sealing sleeve 8 - 1 and the second sealing sleeve 8 - 2 , which communicates with the input port 11 . The cavity formed between the second sealing sleeve 8-2 and the third sealing sleeve 8-3 is the first output cavity, which communicates with the first output interface 16; the first sealing sleeve 8-1 and the fourth sealing sleeve 8- The cavity formed between 4 is the second output cavity, which communicates with the second output interface 17; the valve stem introduction hole 7 is circular, and the valve stem arranged between the inner edge of the first sealing sleeve and the inner edge of the third sealing sleeve Surrounding; the valve hole 10 is also circular and arranged in two rows, one of which is arranged around the valve stem between the inner edge of the second sealing sleeve and the inner edge of the third sealing sleeve, and the other row is arranged in the first sealing sleeve Around the valve stem between the edge and the inner edge of the fourth sealing sleeve; two sets of electromagnetic opening and closing mechanisms are arranged at both ends of the valve stem 5; balance through holes 15 are set at both ends of the valve body, and balance guide holes 2 are set on the valve body . The electromagnetic opening and closing mechanism includes an electromagnetic coil 13 and an iron core 12, and the iron core 12 is fixedly connected to the end of the valve stem respectively. This example is a dual output design, and the two output interfaces can output alternately.

Embodiment three

Referring to Fig. 3, in this embodiment, there are two sealing sleeves between the valve stem and the valve body, the inner edge of the sealing sleeve is affixed to the periphery of the valve stem, the outer edge of the sealing sleeve is affixed to the periphery of the inner wall of the valve body, and a limit ring is used to 9 pairs of sealing sleeve limit. The cavity formed between the first sealing sleeve 8-1 and the second sealing sleeve 8-2 is an input cavity, which communicates with the input interface 11; the second sealing sleeve 8-2 and the inner cavity on the left side of the valve body 1 form an output cavity, It is connected with the output port 3; the first sealing sleeve 8-1 forms a balance chamber with the inner cavity on the right side of the valve body, and the balance chamber is connected with the output chamber through the balance bypass pipe 4. In this example, the balance bypass pipe 4 is through the output port 3 connected to the output cavity. The balance bypass pipe can quickly balance the fluid pressure in the two chambers, thereby balancing and stabilizing the valve stem. In order to achieve the best and fastest balance effect, the diameter of the bypass balance pipe can be increased or an additional bypass balance pipe can be added. So that the valve stem can be in an excellent fluid dynamic balance state. The valve stem introduction hole 7 is strip-shaped, and is arranged around the valve stem between the inner edge of the first sealing sleeve and the inner edge of the second sealing sleeve; the valve hole 10 is also strip-shaped, and is arranged at the first 2. The inner edge of the sealing sleeve is along the left side; the balance diversion hole 2 is arranged on the upper and lower sections of the valve stem. The end of the valve stem is provided with an electromagnetic opening and closing mechanism, which is arranged at one end of the valve stem, and includes an electromagnetic coil 13 and an iron core 12, the iron core 12 is fixedly connected to the end of the valve stem, and a closing spring 14 is arranged in the center of the electromagnetic coil. The opening and closing principle of this example is the same as that of Embodiment 1.

Embodiment four

Referring to Fig. 3, in this embodiment, there are two sealing sleeves between the valve stem and the valve body, the inner edge of the sealing sleeve is affixed to the periphery of the valve stem, the outer edge of the sealing sleeve is affixed to the periphery of the inner wall of the valve body, and a limit ring is used to 9 pairs of sealing sleeve limit. The cavity formed between the first sealing sleeve 8-1 and the second sealing sleeve 8-2 is an input cavity, which communicates with the input interface 11; the second sealing sleeve 8-2 forms an output cavity with the inner cavity on the left side of the valve body, and is connected with the inner cavity on the left side of the valve body. The output port 3 is connected; the first sealing sleeve 8-1 forms a balance chamber with the inner cavity on the right side of the valve body, and the balance chamber is connected to the output chamber through the balance bypass pipe 4. In this example, the balance bypass pipe 4 is connected to the output port 3 connected to the output cavity. The valve stem introduction hole 7 is circular and is arranged around the middle section of the valve stem between the inner edge of the first sealing sleeve and the inner edge of the second sealing sleeve; the valve hole 10 is also circular and is arranged on the left side of the second sealing sleeve. ; Balance diversion holes 2 are arranged on the upper and lower sections of the valve stem. Two sets of electromagnetic opening and closing mechanisms are arranged at both ends of the valve stem, which include electromagnetic coils 13 and iron cores 12, and the iron cores 12 are fixedly connected to ends of the valve stem respectively. The opening and closing principle of this example is the same as that of the second embodiment.

The same sealing sleeve is arranged on the cylindrical valve stem of the present invention, and the same sealing sleeve gap formed by the same limiting ring, no matter how the internal pressure of the input chamber changes, the pressure relative to the valve stem is always balanced. When the valve stem moves, the two sealing sleeves are respectively stretched. Since the two sealing sleeves on the same valve stem have equal stretching strokes, the volume in the input chamber does not change. And the amount of fluid accommodated in the tiny gap formed by the inner limit ring limit in the sealing sleeve is very little. The extremely fast valve stem movement is formed by the electromagnetic force and a slight pressure wave is formed in the gap of the sealing sleeve that moves accordingly. The transmission of this pressure wave will show a non-linear increase with the increase of the fluid pressure, and can be simultaneously The negative pressure wave generated by the other rapidly expanding sealing sleeve is relieved, so the pressure wave in the high pressure is spontaneous and can be ignored. Therefore, when the valve stem moves left and right, its pressure resistance is always constant (mainly the tension of the sealing sleeve), and is not affected by the fluid pressure in the valve body. No matter how much the fluid pressure increases, the pressure exerted by the valve stem remains unchanged, which creates extremely favorable conditions for the stable operation of the electromagnetic force of the solenoid valve. You can rest assured that you can control it safely and freely. In addition, because the internal and external pressures of the covering surface on the valve hole covered by the sealing sleeve are always balanced, the valve is not affected by the fluid pressure all the time. At the same time, due to the set limit ring, the two sealing sleeves can minimize the pressure gap surface from the huge fluid pressure in the valve body. If the sealing sleeve is made into a lacing reinforcement sleeve, it can be applied to ultra-high pressure. The formation of an ultra-high pressure direct-acting general-purpose solenoid valve is of far-reaching significance. In addition, since the electromagnetic valve is opened by rolling outside the valve stem, the solid particles flowing out from the valve stem will not affect the sealing effect of the valve sleeve again covering and closing the valve hole. Therefore, the combination of this valve and the electromagnetic suction device can solve almost all fatal flaws and deficiencies of the current prior art.

The present invention is applicable to different environmental pressures, and is suitable for vacuum external environment, low-pressure external environment, high-pressure external environment and ultrahigh-pressure external environment. The fluid pressure state controlled by the internal switch of this general-purpose solenoid valve can be either a low-pressure state, or a stable high-pressure state, or even an ultra-high pressure state (for example, it is used as a deep-sea solenoid valve on the seabed in ocean exploration). It can also adjust the flow rate of the valve according to the current of the electromagnetic force, which is both a regulating valve and a solenoid valve. When the double electromagnetic opening and closing mechanism is adopted, as long as two DC pulses are respectively input to the electromagnetic coils at both ends, the valve can be opened or closed, thereby effectively saving electric energy.

Claims (9)

1. the direct-acting type universaling electromagnetic valve comprises valve body, establishes electromagnetism open-and-close mechanism and valve rod in the valve body; Establish input interface and output interface on the valve body; Connect input cavity in the input interface, connect output cavity in the output interface, it is characterized in that said valve rod is a cylindrical hollow body; In establish two partitions, make that hollow article is divided into three sections of left, center, right in the valve rod; The valve rod stage casing is provided with valve rod introduction hole and valve hole; Between valve rod and valve body, establish two stuffing box glands at least, along being fixed in the valve rod periphery, the stuffing box gland outer is fixed in body cavity wall periphery, and spacing to stuffing box gland with limited ring in the stuffing box gland; By the position of a stuffing box gland shutoff wherein, said introduction hole was arranged between the interior edge of two stuffing box glands when said valve hole was arranged in valve closing.

2. direct-acting type universaling electromagnetic valve according to claim 1 is characterized in that establishing between said valve rod and the valve body three stuffing box glands, and the cavity that constitutes between first stuffing box gland and second stuffing box gland is an input cavity, is communicated with input interface; The cavity that constitutes between second stuffing box gland and the 3rd stuffing box gland is an output cavity, leads to output interface; Said valve rod introduction hole is a long strip, is arranged in around the valve rod between interior edge of first stuffing box gland and the interior edge of second stuffing box gland; Said valve hole is a long strip also, is arranged in around the valve rod between interior edge of second stuffing box gland and the interior edge of the 3rd stuffing box gland; Said electromagnetism open-and-close mechanism is arranged on an end of valve rod; The balance through hole is established in the valve body termination, establishes the balance pod apertures on the valve body; By the position of the second stuffing box gland shutoff, said introduction hole was arranged between the interior edge of first and second stuffing box gland when said valve hole was arranged in valve closing.

3. direct-acting type universaling electromagnetic valve according to claim 2 is characterized in that said electromagnetism open-and-close mechanism comprises electromagnetic coil and iron core, and iron core is fixed in the valve rod termination, and central authorities are provided with closing spring at electromagnetic coil.

4. direct-acting type universaling electromagnetic valve according to claim 1; It is characterized in that establishing between said valve rod and the valve body four stuffing box glands; Establish two output interfaces on the said valve body, the cavity that constitutes between first stuffing box gland and second stuffing box gland is an input cavity, is communicated with input interface; The cavity that constitutes between second stuffing box gland and the 3rd stuffing box gland is first output cavity, leads to first output interface; The cavity that constitutes between first stuffing box gland and the 4th stuffing box gland is second output cavity, is communicated with second output interface; Said valve rod introduction hole is circular, is arranged in around the valve rod between interior edge of first stuffing box gland and the interior edge of second stuffing box gland; Said valve hole also is circular, and apportion two is gone, and wherein delegation is arranged in around the valve rod between interior edge of second stuffing box gland and the interior edge of the 3rd stuffing box gland, and another row is arranged in around the valve rod between interior edge of first stuffing box gland and the interior edge of the 4th stuffing box gland; Two cover electromagnetism open-and-close mechanisms are arranged at the two ends of said valve rod; The valve body two ends is established the balance through hole respectively, establishes the balance pod apertures on the valve body; By the position of first and second stuffing box gland shutoff, said introduction hole was arranged between the interior edge of first and second stuffing box gland when said valve hole was arranged in valve closing.

5. direct-acting type universaling electromagnetic valve according to claim 4 is characterized in that said electromagnetism open-and-close mechanism comprises electromagnetic coil and iron core, and iron core is fixed in the valve rod termination respectively.

6. direct-acting type universaling electromagnetic valve according to claim 1 is characterized in that being provided with between said valve rod and the valve body two stuffing box glands, and the cavity that constitutes between first stuffing box gland and second stuffing box gland is an input cavity, is communicated with input interface; Second stuffing box gland and valve body left side inner chamber constitute output cavity, lead to said output interface; First stuffing box gland and valve body right side inner chamber constitute counter balance pocket, and counter balance pocket links to each other with output cavity through the balance bypass tube; Said valve rod introduction hole is a long strip, is arranged in around the valve rod between interior edge of first stuffing box gland and the interior edge of second stuffing box gland; Said valve hole is a long strip also, is arranged in second stuffing box gland along the left side; Go up for left and right section of said valve rod and arrange the balance pod apertures; The electromagnetism open-and-close mechanism is established in said valve rod termination; By the position of the second stuffing box gland shutoff, said introduction hole was arranged between the interior edge of first and second stuffing box gland when said valve hole was arranged in valve closing.

7. direct-acting type universaling electromagnetic valve according to claim 6; It is characterized in that said electromagnetism open-and-close mechanism is arranged on an end of said valve rod; Said electromagnetism open-and-close mechanism comprises electromagnetic coil and iron core, and iron core is fixed in the valve rod termination, and central authorities establish closing spring at electromagnetic coil.

8. direct-acting type universaling electromagnetic valve according to claim 1 is characterized in that being provided with between said valve rod and the valve body two stuffing box glands, and the cavity that constitutes between first stuffing box gland and second stuffing box gland is an input cavity, is communicated with input interface; Second stuffing box gland and valve body left side inner chamber constitute output cavity, lead to said output interface; First stuffing box gland and valve body right side inner chamber constitute counter balance pocket, and counter balance pocket links to each other with output cavity through the balance bypass tube; Said valve rod introduction hole is circular, is arranged in around the valve rod between interior edge of first stuffing box gland and the interior edge of second stuffing box gland; Said valve hole also is circular, is arranged in second stuffing box gland along the left side; Go up for left and right section of said valve rod and arrange the balance pod apertures; Two cover electromagnetism open-and-close mechanisms are arranged at the two ends of said valve rod; By the position of the second stuffing box gland shutoff, said introduction hole was arranged between the interior edge of first and second stuffing box gland when said valve hole was arranged in valve closing.

9. direct-acting type universaling electromagnetic valve according to claim 5 is characterized in that said electromagnetism open-and-close mechanism comprises electromagnetic coil and iron core, and iron core is fixed in the valve rod termination respectively.

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