WO2020051966A1

WO2020051966A1 - Electromagenetic check valve with adjustable cutoff direction

Info

Publication number: WO2020051966A1
Application number: PCT/CN2018/109868
Authority: WO
Inventors: 邱梅
Original assignee: 苏州丹顿机电有限公司
Priority date: 2018-09-12
Filing date: 2018-10-11
Publication date: 2020-03-19
Also published as: CN108869849A; CN108869849B

Abstract

A check valve with an adjustable cutoff direction, the check valve comprising a first housing (10) and a second housing (50) connected to one another, a first through hole (15) being disposed in the first housing (10) and a fourth connecting hole (54) in communication with the first through hole (15) being disposed in the second housing (50), a first valve core (16) slidably engaged with the first through hole (15), and a first spring (19) pressing against the first valve core (16), the first valve core (16) being capable of sealing the fourth connecting hole (54), a second through hole (55) being disposed in the second housing (50), a second connecting hole (14) in communication with the second through hole (55) being disposed in the first housing (10), and the second connecting hole (14) and the fourth connecting hole (54) being in communication with one another; a second valve core (56) slidably engaged with the second through hole (55), and a second spring (59) pressing against the second valve core (56), the second valve core (56) being capable of sealing the second connecting hole (14); a first electromagnet drive apparatus (100) connected to the first housing (10), the first electromagnet drive apparatus (100) being capable of driving the first drive core (16) to separate from the fourth connecting hole (54); and a second electromagnet drive apparatus (150) connected to the second housing (50), the second electromagnet drive apparatus (150) being capable of driving the second drive core (56) to separate from the second connecting hole (14). The present check valve can conveniently control the reverse direction flow of the oil.

Description

Electromagnetic check valve with adjustable cutoff direction

Technical field

The invention relates to a one-way valve, in particular to an electromagnetic one-way valve with adjustable cutoff direction.

Background technique

One-way valve is that the fluid can only flow along the water inlet, but the medium at the water outlet cannot return. It is commonly known as one-way valve. Check valve is also called check valve or check valve. Used to prevent reverse flow of oil flow in hydraulic systems or to prevent reverse flow of compressed air in pneumatic systems. Check valves are available in straight and right angle versions.

The existing check valve can only allow the oil to flow in one direction, so that it remains open when the oil flows in a fixed direction, and remains off when the oil flows in the reverse direction, but in some cases, the oil needs to be reversed. One-way flow, that is, the oil flows from the original water outlet to the original water inlet in one direction. At this time, you need to install the check valve in reverse, or use two check valves. Disassembly and assembly takes time and effort, and the oil is easy to flow out. polluted environment.

Summary of the Invention

An object of the present invention is to provide an electromagnetic check valve with an adjustable direction, which can conveniently control the direction of preventing oil from flowing backwards, in view of the above defects in the prior art.

In order to achieve the above-mentioned object of the present invention, the present invention adopts the following technical solution: An electromagnetic check valve with adjustable cutoff direction includes a first housing and a second housing connected to each other, and the first housing is provided with a first housing. A through hole, the second housing is provided with a fourth connection hole communicating with the first through hole, and the one-way valve further includes a first valve core slidingly connected to the first through hole and an extruder A first spring that presses the first valve core, the first valve core can seal the fourth connection hole, the second housing is provided with a second through hole, and the first housing is provided with a A second connection hole communicating with the second through hole, and the second connection hole and the fourth connection hole communicate with each other;

The electromagnetic check valve with adjustable cutoff direction further includes:

A second valve core slidingly mated with the second through hole and a second spring pressing the second valve core, the second valve core can seal the second connection hole;

A first electromagnet driving device connected to the first housing, and the first electromagnet driving device can drive the first valve core out of the fourth connection hole;

A second electromagnet driving device connected to the second housing, and the second electromagnet driving device can drive the second valve core out of the second connection hole.

In addition, the present invention also proposes the following subsidiary technical solutions:

The first electromagnet driving device includes a first armature, and a first tie rod is connected between the first armature and the first valve core.

The first electromagnet driving device includes a first casing connected to the first casing and a first coil disposed in the first casing and driving the first armature to move.

The first electromagnet driving device further includes a first handle located outside the first housing and connected to the first armature.

The second electromagnet driving device includes a second armature, and a second tie rod is connected between the second armature and the second valve core.

The second electromagnet driving device further includes a second casing connected to the second casing and a second coil disposed in the second casing and driving the second armature to move.

The second electromagnet driving device further includes a second handle located outside the second casing and connected to the second armature.

The first housing is provided with a first flow hole communicating with the first through hole and the second connection hole.

The second housing is provided with a second flow hole communicating with the second through hole and the fourth connection hole, and the second flow hole is matched with the first flow hole.

The first housing is further provided with a first check sleeve, the first spring abuts between the first check sleeve and the first valve core, and the second housing is further provided with a first Two check sleeves, the second spring abuts between the second check sleeve and the second valve core.

Compared with the prior art, the present invention has the advantage that the electromagnetic check valve of the adjustable cut-off direction of the present invention automatically changes the state of the first spool and the second spool through the electromagnet driving device, so that the check valve can Convenient control prevents the oil from flowing in the reverse direction. In addition, it can also reach the state of full conduction and cutoff. The function is more diversified, and the operation is simple and convenient, the reliability is high, and it is convenient to realize automation.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a check valve in the present invention.

FIG. 2 is a left side view of the check valve in FIG. 1.

FIG. 3 is a schematic structural view of a one-way valve in the present invention after changing a flow limiting direction.

detailed description

The technical solution of the present invention will be further described in a non-limiting manner with reference to the preferred embodiments and the accompanying drawings.

As shown in FIG. 1 and FIG. 2, an electromagnetic check valve with an adjustable cutoff direction corresponding to a preferred embodiment of the present invention includes a first housing 10 and a second housing 50 connected to each other. The body 10 and the second shell 50 are connected by a flange. The first shell 10 and the second shell 50 are respectively provided with a matching first flange plate 11 and a second flange plate 51, and the first shell is bolted by a nut. The body 10 and the second casing 50 are fastened together.

The adjustable check direction electromagnetic check valve of the present invention further includes a first electromagnet driving device 100 and a second electromagnet driving device 150 connected to the first casing 10 and the second casing 50, respectively.

A first through hole 12 is formed on an end surface of the first case 10, and a first connection hole 13 and a second connection hole 14 are formed on the end surface of the other end. The first case 10 is also provided with a first connection hole inside. 13 and the first through hole 15 of the first through hole 12, preferably, the first connecting hole 13 and the first through hole 15 are coaxially arranged; the second connecting hole 14 is in communication with the first through hole 12, and Used to connect external oil lines.

The structure of the second casing 50 is similar to that of the first casing 10, and a second through-hole 52 matching the first through-hole 12 is formed on an end surface of one end thereof, and a third connection hole 53 and The fourth connection hole 54 and a second through hole 55 communicating with the third connection hole 53 and the fourth connection hole 54 are also provided inside the second housing 50. Preferably, the third connection hole 53 and the second through hole 55 are coaxial. The fourth connection hole 54 is in communication with the second through-hole 52 and is used to connect an external oil pipeline.

Preferably, after the first casing 10 and the second casing 50 are connected, the second connection hole 14 is coaxial with the second through hole 55; the fourth connection hole 54 is coaxial with the first through hole 15.

The check valve of the present invention further includes a first spool 16, a first check sleeve 17, a first tie rod 18, and a first spring 19.

The first valve core 16 is slidably fitted in the first through hole 15. In one embodiment, the fitting relationship between the first valve core 16 and the first through hole 15 may refer to the fitting of the cylinder piston and the cylinder in the prior art. relationship. The first spool 16 is provided with a first tapered surface 71 that can seal the fourth connection hole 54 at one end, and a first blind hole 70 is opened at the other end. A first bottom surface 72 of the first blind hole 70 is also provided with the first The first screw hole 73 to which the tie rod 18 is screwed. A first flow hole 75 is also provided in the radial direction of the first valve body 16 in fluid communication with the first and second through

holes

12 and 52.

One end of the first pull rod 18 is screwed into the first screw hole 73, and the other end protrudes from the first connection hole 13 and is connected to the first electromagnet driving device 100. After the first electromagnet driving device 100 is powered on, the first A tie rod 18 separates the first valve element 16 from the fourth connection hole 54.

The surface of the first connection hole 13 is provided with threads. The first backstop sleeve 17 is threadedly connected in the first connection hole 13. The first tie rod 18 is threaded in the first backstop sleeve 17. The first backstop sleeve 17 is provided with a first A support surface 74.

The first spring 19 is disposed in the first blind hole 70, and is sleeved on the first tie rod 18, and the two ends of the first spring 19 abut against the first support surface 74 and the first bottom surface 72, respectively. The first spring 19 applies a force in the direction of the fourth connection hole 54 to the first valve core 16; so that when the first electromagnet driving device 100 is not energized, the first valve core 16 can abut and seal the fourth connection hole 54; When the first electromagnet driving device 100 is energized, the first electromagnet driving device 100 can drive the first valve core 16 out of the fourth connection hole 54.

The check valve of the present invention further includes a second valve core 56, a second check sleeve 57, a second tie rod 58, and a second spring 59.

Wherein, the second valve core 56 is slidably fitted in the second through hole 55. In one embodiment, the fitting relationship between the second valve core 56 and the second through hole 55 can refer to the fitting of the cylinder piston and the cylinder in the prior art. relationship. The second valve core 56 is provided at one end with a second tapered surface 81 that can seal the second connection hole 14, and the other end is provided with a second blind hole 80. The second bottom surface 82 of the second blind hole 80 is also provided with a second The second screw hole 83 to which the tie rod 58 is screwed. The second valve core 56 is further provided with a second flow hole 85 in fluid communication with the first and second through

holes

12 and 52.

One end of the second pull rod 58 is screwed into the second screw hole 83, and the other end extends out of the third connection hole 53 and is connected to the second electromagnet driving device 150. After the second electromagnet driving device 150 is powered on, the first The two tie rods 58 separate the second valve core 56 from the second connection hole 14.

The surface of the third connection hole 53 is provided with threads. The second backstop sleeve 57 is threadedly connected in the third connection hole 53. The second tie rod 58 is threaded in the second backstop sleeve 57. The second backstop sleeve 57 is provided with a first二 Supporting surface 84.

The second spring 59 is disposed in the second blind hole 80, and is sleeved on the second tie rod 58, and both ends of the second spring 59 abut against the second support surface 84 and the second bottom surface 82. The second spring 59 exerts a force in the direction of the second through hole 55 on the second valve core 56; so that when the second electromagnet driving device 150 is not energized, the second valve core 56 can abut and seal the second connection hole 14; When the second electromagnet driving device 150 is energized, the second electromagnet driving device 150 can drive the second valve core 56 out of the second connection hole 14.

The first electromagnet driving device 100 includes a first casing 101 connected to a side of the first casing 10, a first coil 102 disposed in the first casing 101, and slidingly connected in the first casing 101 and defined by the first casing 101. The first armature 103 driven by the first coil 102. One end of the first armature 103 is connected to the first tie rod 18 through the first connecting rod 104 and the connecting sleeve 105, and the other end is provided with a second connecting rod 106. The second connecting rod 106 extends out of the first housing 101 and is provided with a first handle 107. . After the first coil 102 is energized, the first armature 103 is driven to move outward, so that the first valve core 16 is out of contact with the fourth connection hole 54. After power loss, the first valve core 16 returns to its original position under the action of the spring force ( The energization of the coil to drive the armature is a well-known technique in the art, and will not be described in detail here). In addition, in some special cases, the first valve core 16 can also be opened by pulling the first handle 107 by hand.

The second electromagnet driving device 150 includes a second casing 151 connected to a side of the second casing 50, a second coil 152 disposed in the second casing 151, and slidingly connected in the second casing 151 and formed by The second armature 153 is driven by the second coil 152. One end of the second armature 153 is connected to the second tie rod 58 through the third link 154 and the connecting sleeve 155. The other end is provided with a fourth link 156. The fourth link 156 extends out of the second housing 151 and is provided with a second handle 157. . After the second coil 152 is energized, the second armature 153 is driven to move outward, so that the second valve core 56 is out of contact with the second connection hole 14. After the power is lost, the second valve core 56 returns to its original position under the action of the spring force. In addition, in some special cases, the second valve core 56 can also be opened by pulling the second handle 157 by hand.

As shown in FIG. 1, when the first electromagnet 100 loses power and the second electromagnet 150 receives power, the first valve core 16 abuts against the fourth connection hole 54, and the second valve core 56 is disengaged from the second connection hole 14. Contact, at this time, after the oil enters through the fourth connection hole 54, the first valve core 16 can be pushed open and flow out from the second connection hole 14 through the first and second through

holes

12 and 52; and if the oil When flowing in from the second connection hole 14, the first spring 19 presses the first valve core 16 against the fourth connection hole 54, and the pressure of the oil will further press the first valve core 16 against the fourth connection hole 54. Therefore, The oil cannot flow into the fourth connection hole 54, that is, only the oil is allowed to flow in from the second connection hole 14 and flow out from the fourth connection hole 54 at this time.

Correspondingly, as shown in FIG. 2, when the first electromagnet 100 is energized and the second electromagnet 150 is de-energized, the first spool 16 is disconnected from the fourth connection hole 54, and the second spool 56 is connected to the second The hole 14 is tight. At this time, after the oil enters from the second connection hole 14, the second valve core 56 can be pushed open and flow out from the fourth connection hole 54 through the first and second through

holes

12, 52; and If the oil flows from the fourth connection hole 54, the second spring 59 presses the second valve core 56 against the second connection hole 14, and the pressure of the oil will further cause the second valve core 56 to press the second connection hole 14 tightly. Therefore, the oil cannot flow into the second connection hole 14, that is, only the oil is allowed to flow in from the fourth connection hole 54 and flow out from the second connection hole 14 at this time.

Obviously, when the first and

second electromagnets

100 and 150 are powered, the first and

second valve cores

10 and 50 are both in an open state, and the entire valve body is in a fully conducting state at this time; When the second and

second electromagnets

100 and 150 are de-energized, the first and

second valve cores

10 and 50 are in contact with the fourth connection hole 54 and the second connection hole 14, respectively. At this time, the entire valve body is completely cut off. , The oil circuit is disconnected.

The adjustable check direction electromagnetic check valve of the present invention automatically changes the state of the first valve core and the second valve core through the electromagnet driving device, so that the check valve can conveniently control the direction of preventing oil from flowing in the reverse direction. It can also reach the fully on and off states, with more diversified functions, simple and convenient operation, high reliability, and easy to realize automation.

It should be pointed out that the above-mentioned preferred embodiments are only for explaining the technical concepts and features of the present invention, and the purpose thereof is to enable persons familiar with the technology to understand the content of the present invention and implement it accordingly, and shall not limit the present invention. protected range. Any equivalent change or modification made according to the spirit and essence of the present invention should be covered by the protection scope of the present invention.

Claims

An electromagnetic check valve with adjustable cutoff direction includes a first casing (10) and a second casing (50) connected to each other. The first casing (10) is provided with a first through hole (15). ), The second casing (50) is provided with a fourth connection hole (54) communicating with the first through hole (15), and the check valve further includes a first through hole (15) The first valve core (16) slidingly matched and the first spring (19) pressing the first valve core (16), the first valve core (16) can seal the fourth connection hole (54) ), Characterized in that the second housing (50) is provided with a second through hole (55), and the first housing (10) is provided with a second communication with the second through hole (55) A connection hole (14), the second connection hole (14) and the fourth connection hole (54) communicate with each other;

The electromagnetic check valve with adjustable cutoff direction further includes:

A second valve core (56) slidingly mated with the second through hole (55), and a second spring (59) pressing the second valve core (50); the second valve core (56) Can seal the second connection hole (14);

A first electromagnet driving device (100) connected to the first housing (10), the first electromagnet driving device (100) can drive the first valve core (16) to be released from the fourth connection Hole (54);

A second electromagnet drive device (150) connected to the second housing (50), the second electromagnet drive device (150) can drive the second valve core (56) to disengage from the second connection Hole (14).
The electromagnetic check valve with adjustable cutoff direction according to claim 1, characterized in that the first electromagnet driving device (100) comprises a first armature (103), the first armature (103) and the A first tie rod (18) is connected between the first valve core (16).
The electromagnetic check valve with adjustable cut-off direction according to claim 2, characterized in that said first electromagnet driving device (100) comprises a first housing (101) connected to said first housing (10) And a first coil (102) disposed in the first casing (101) and driving the first armature (103) to move.
The electromagnetic check valve with adjustable cut-off direction according to claim 3, characterized in that the first electromagnet driving device (100) further comprises an outer portion of the first casing (10) and is connected to the first The first handle (107) connected to the armature (103).
The electromagnetic check valve with adjustable cutoff direction according to claim 1, characterized in that said second electromagnet driving device (150) comprises a second armature (153), said second armature (153) and said A second draw rod (58) is connected between the second valve core (56).
The electromagnetic check valve with adjustable cutoff direction according to claim 4, characterized in that the second electromagnet driving device (150) further comprises a second housing (151) connected to the second casing (10). ) And a second coil (152) disposed in the second casing (151) and driving the movement of the second armature (153).
The electromagnetic check valve with adjustable cut-off direction according to claim 6, characterized in that the second electromagnet driving device (150) further comprises an outer portion of the second casing (10) and is connected to the second The second handle (157) is connected to the armature (153).
The electromagnetic check valve with adjustable cutoff direction according to claim 1, characterized in that the first housing (10) is provided with the first through hole (15) and the second connection hole (14) ) Communicating first flow holes (75).
The electromagnetic check valve with adjustable cutoff direction according to claim 8, characterized in that the second housing (50) is provided with the second through hole (55) and the fourth connection hole (54) ) Communicating second flow holes (85), the second flow holes (85) are mated with the first flow holes (75).
The electromagnetic check valve with adjustable cut-off direction according to claim 1, characterized in that the first housing (10) is further provided with a first stop sleeve (17), and the first spring (19) resists Connected between the first check sleeve (17) and the first valve core (16), the second housing (50) is further provided with a second check sleeve (57), and the second A spring (59) abuts between the second check sleeve (17) and the second valve core (56).