Two-position three-way solenoid valve

Abstract

The two-position three-way solenoid valve for which protection is sought in the present invention comprises a magnetic isolation tube, a fixed iron core and a pump body inserted in the magnetic isolation tube, a pump core arranged in the magnetic isolation tube and placed between the fixed iron core and the pump body, and a winding coil; a pump core spring is arranged between the pump core and the fixed iron core, and the winding coil can drive the pump core to compress the pump core spring when energized; a first one-way valve is arranged at one end of the pump core facing the pump body, and a second one-way valve is arranged at one end of the pump body facing the pump core, and the first one-way valve and / or the second one-way valve comprise a mounting plate, and a diaphragm arranged on the mounting plate, wherein the diaphragm is arranged in an umbrella-shaped structure. The present invention reduces the space required for the one-way valve to be assembled in the two-position three-way solenoid valve, and has the advantages of reducing the noise of the two-position three-way solenoid valve when it is in operation, and improving the stability of the pressure and flow rate of the two-position three-way solenoid valve when it is in operation.

Description

Technical Field

[0001] The invention belongs to the technical field related to flow control, and in particular relates to a two-position three-way solenoid valve. Background Art

[0002] Solenoid valve is a basic automation component used to control the direction of medium movement. It is usually used in mechanical control and industrial valves to control the flow of the medium. Among them, the two-position three-way solenoid valve is one of the solenoid valves. The medium has two movement modes and three movement channels in the two-position three-way solenoid valve.

[0003] At present, the movable iron core used for driving the movement of the valve seal on the existing two-position three-way solenoid valve is usually set as an integrated structure. Due to the inevitable tolerances of the components on the two-position three-way solenoid valve during the production and assembly processes, when the movable iron core collides with the fixed iron core, the valve seal driven by the movable iron core has not yet achieved complete sealing of one of the medium movement channels, thereby causing internal leakage of the two-position three-way solenoid valve and resulting in defective products; and the existing two-position three-way solenoid valve cannot be used in vending machines because it cannot be completely cleaned. Summary of the invention

[0004] Based on this, it is necessary to provide a two-position three-way solenoid valve to address the technical problems existing in the prior art.

[0005] Specifically, a two-position three-way solenoid valve includes a magnetic isolation tube, a fixed iron core arranged in the magnetic isolation tube, a movable iron core assembly cooperating with the fixed iron core, and a first valve body and a second valve body; the first valve body has an inlet pipe and a first outlet pipe, the second valve body is plugged into the first valve body, wherein the second valve body has a second outlet pipe partially extending out of the first valve body; the movable iron core assembly is configured as a split structure, wherein a valve seal is connected to the portion of the movable iron core assembly extending into the first valve body, the movable iron core assembly can drive the valve seal to perform lifting and lowering movements, and the lifted and lowered valve seal can control the inlet pipe to selectively connect with the first outlet pipe or the second outlet pipe.

[0006] As a preferred embodiment of the present invention, the movable iron core assembly includes a movable iron core, a movable iron core sleeve fixedly connected to the movable iron core, and a movable iron core rod; the movable iron core rod is movably connected to the movable iron core sleeve, wherein a first elastic member is provided between the part of the movable iron core rod connected to the movable iron core sleeve and the movable iron core sleeve, and the valve seal is fixedly connected to one side end of the movable iron core rod extending out of the movable iron core sleeve.

[0007] As a preferred solution of the present invention, the movable iron core rod is provided with a limit baffle at one end extending into the movable iron core sleeve, and the first elastic member is arranged at a position between the limit baffle and the movable iron core sleeve.

[0008] As a preferred solution of the present invention, the first elastic member is a spring, and the spring is sleeved on the movable iron core rod.

[0009] As a preferred solution of the present invention, a guide column is provided on the second valve body, and the movable iron core rod passes through the guide column and is connected and fixed to the valve seal, wherein the part of the movable iron core rod arranged in the guide column is loosely matched with the guide column.

[0010] As a preferred solution of the present invention, the two-position three-way solenoid valve further includes a sealing assembly for assembling and sealing the portion of the second valve body located above the second outlet pipe and the movable iron core rod.

[0011] As a preferred embodiment of the present invention, the sealing assembly includes a fixing member, and a sealing rubber sleeve sleeved on the fixing member; the sealing rubber sleeve includes an outer sleeve portion clamped on the fixing member, an inner sleeve portion partially extending into the fixing member, and a connecting portion for connecting the outer sleeve portion and the inner sleeve portion; the outer sleeve portion is arranged at a position between the second valve body and the fixing member in a tight fit manner, and the movable iron core rod passes through the inner sleeve portion, wherein the inner sleeve portion is partially bent under the action of the movable iron core rod, and the bent inner sleeve portion is abutted against the portion of the movable iron core rod that passes through the inner sleeve portion.

[0012] As a preferred embodiment of the present invention, the first valve opening on the first valve body for cooperating with the valve seal is set as a conical structure; and / or the second valve opening on the second valve body for cooperating with the valve seal is set as a conical structure.

[0013] As a preferred solution of the present invention, a sealing ring is sleeved on the second valve body, and the second valve body and the first valve body are assembled and sealed by the sealing ring.

[0014] As a preferred solution of the present invention, the magnetic isolation tube is provided with a limiting convex plate, and the first valve body is provided with a slot body capable of clamping the limiting convex plate; the magnetic isolation tube and the first valve body can be limited and fixed through the cooperation between the limiting convex plate and the slot body.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0016] The two-position three-way solenoid valve provided by the present invention, by setting the movable iron core component to a split structure, enables the two-position three-way solenoid valve to use the movable iron core component to drive the valve seal to achieve complete sealing of the second valve body, thereby solving the technical problem of internal leakage and reducing the overall production and assembly accuracy of the two-position three-way solenoid valve, which has the effect of reducing production costs and assembly costs; at the same time, the two-position three-way solenoid valve has a simple structure and is easy to assemble, and can achieve the function of fully cleaning the first valve body and the second valve body, and is suitable for use in vending machines. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A cross-sectional view of a two-position three-way solenoid valve provided in one embodiment of the present invention.

[0018] Figure 2 for Figure 1 Enlarged view of the P part.

[0019] Figure 3 for Figure 1 Schematic diagram of the structure of the magnetic isolation tube in the two-position three-way solenoid valve from another perspective.

[0020] Figure 4 for Figure 1 A cross-sectional view of the movable iron core assembly in a two-position three-way solenoid valve.

[0021] Figure 5 for Figure 1 A schematic structural diagram of the first valve body in the two-position three-way solenoid valve from another perspective.

[0022] Figure 6 for Figure 1 A schematic structural diagram of the second valve body in the two-position three-way solenoid valve from another perspective.

[0023] Among them, 10, magnetic isolation tube; 11, limiting convex plate; 111, limiting concave part; 20, fixed iron core; 21, second elastic part; 22, winding coil; 30, movable iron core assembly; 31, valve seal; 32, movable iron core; 33, movable iron core sleeve; 34, movable iron core rod; 341, limiting baffle; 35, first elastic part; 40, first valve body; 41, inlet pipe; 42, first outlet pipe; 43, missing groove; 44, slot body; 441, limiting convex part; 50, second valve body; 51, second outlet pipe; 52, guide column; 60, sealing assembly; 61, fixing part; 62, sealing rubber sleeve; 621, outer sleeve; 622, inner sleeve; 623, connecting part; 101, sealing ring; 201, first valve port; 202, second valve port. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0026] See also Figure 1-Figure 6 A two-position three-way solenoid valve provided in one embodiment of the present invention includes a magnetic isolation tube 10, a fixed iron core 20 arranged in the magnetic isolation tube 10, a movable iron core assembly 30 cooperating with the fixed iron core 20, and a first valve body 40 and a second valve body 50.

[0027] The first valve body 40 has an inlet pipe 41 and a first outlet pipe 42 , and the second valve body 50 is plugged into the first valve body 40 , wherein the second valve body 50 has a second outlet pipe 51 partially extending out of the first valve body 40 .

[0028] In this embodiment, a notch 43 is provided on the first valve body 40 , and the second outlet pipe 51 on the second valve body 50 can be inserted into the first valve body 40 along the notch 43 on the first valve body 40 , thereby facilitating the assembly connection between the first valve body 40 and the second valve body 50 .

[0029] Among them, a sealing ring 101 is sleeved on the second valve body 50, and the second valve body 50 and the first valve body 40 are assembled and sealed by the sealing ring 101, so that the channel connecting the inlet pipe 41 and the first outlet pipe 42 and the channel connecting the inlet pipe 41 and the second outlet pipe 51 are two independent channels, and the two do not affect each other.

[0030] In this embodiment, the movable iron core assembly 30 is set to a split structure, wherein the movable iron core assembly 30 is connected to a valve seal 31 on the portion extending into the first valve body 40, and the movable iron core assembly 30 can drive the valve seal 31 to do lifting movement, and the lifted valve seal 31 can control the inlet pipe 41 to selectively connect with the first outlet pipe 42 or the second outlet pipe 51. In other words, the movable iron core assembly 30 of this embodiment can drive the valve seal 31 to selectively block the passage connecting the inlet pipe 41 with the first outlet pipe 42, and the passage connecting the inlet pipe 41 with the second outlet pipe 51.

[0031] Specifically, the movable core assembly 30 includes a movable core 32, a movable core sleeve 33 fixed to the movable core 32, and a movable core rod 34; the movable core rod 34 is movably connected to the movable core sleeve 33, wherein a first elastic member 35 is provided between the portion of the movable core rod 34 connected to the movable core sleeve 33 and the movable core sleeve 33, and the valve seal 31 is fixed to one end of the movable core rod 34 extending out of the movable core sleeve 33. The movable core sleeve 33 is clamped to the movable core 32, so that the movable core rod 34 fixed with the valve seal 31 can be elastically adjusted with the movable core 32 through the first elastic member 35, so as to ensure that when the movable core 32 abuts against the fixed core 20, the movable core 32 can drive the valve seal 31 through the movable core rod 34 to completely seal the second valve body 50.

[0032] Among them, the movable iron core rod 34 is provided with a limit baffle 341 at one end extending into the movable iron core sleeve 33, and the first elastic member 35 is arranged at a position between the limit baffle 341 and the movable iron core sleeve 33. The movable iron core rod 34 can push the limit baffle 341 on the movable iron core rod 34 against the movable iron core 32 under the elastic action of the first elastic member 35. The first elastic member 35 of this embodiment is set as a spring, and the spring is sleeved on the movable iron core rod 34. Of course, it should be noted that the position of the first elastic member 35 is not limited to the figure. Those skilled in the art can set the first elastic member 35 at a position between the limit baffle 341 and the movable iron core 32 according to the needs of use, so that the limit baffle 341 is pressed against the movable iron core sleeve 33 under the action of the first elastic member 35.

[0033] It should also be noted that a second elastic member 21 is provided between the movable iron core 32 and the fixed iron core 20, and the second elastic member 21 is also a spring, which partially extends into the movable iron core 32; and a winding coil 22 is also wound around the periphery of the magnetic isolation tube 10. When the winding coil 22 is energized, it can generate a magnetic field and attract the movable iron core 32 to the fixed iron core 20, and then drive the valve seal 31 to move upward through the movable iron core sleeve 33 and the movable iron core rod 34, and realize the blocking of the second valve body 50; and when the winding coil 22 is de-energized, the second elastic member 21 pushes the movable iron core 32 to move downward, and drives the valve air 31 to move downward through the movable iron core sleeve 33 and the movable iron core rod 34, and realizes the blocking of the first outlet pipe 42 on the first valve body 40.

[0034] Furthermore, in this embodiment, the first valve port 201 on the first valve body 40 for cooperating with the valve seal 31 is configured as a conical surface structure; and / or the second valve port 202 on the second valve body 50 for cooperating with the valve seal 31 is configured as a conical surface structure. This improves the sealing effect of the first valve port 201 or the second valve port 202 when the valve seal 31 acts on the first valve port 201 or the second valve port 202, thereby ensuring the sealing effect of the connection channel switching when the two-position three-way solenoid valve is working.

[0035] In this embodiment, a guide column 52 is provided on the second valve body 50, and the movable iron core rod 34 passes through the guide column 52 and is connected and fixed to the valve seal 31, wherein the portion of the movable iron core rod 34 disposed in the guide column 52 is in clearance fit with the guide column 52. The guide column 52 on the second valve body 50 of this embodiment can guide the lifting and lowering movement of the movable iron core rod 34, thereby solving the eccentricity problem generated when the movable iron core rod 34 is driven by the movable iron core 32, and further ensuring the sealing effect of the valve seal 31 when acting on the first valve port 201 or the second valve port 202.

[0036] In this embodiment, the two-position three-way solenoid valve of this embodiment further includes a sealing assembly 60, which is used to assemble and seal the portion of the second valve body 50 located above the second outlet pipe 51 and the movable iron core rod 34. That is, in this embodiment, the sealing assembly 60 is used to seal the opening of the second valve body 50 to prevent leakage of the material introduced by the inlet pipe 41 during discharge from the second outlet 51.

[0037] Specifically, the sealing assembly 60 includes a fixing part 61 and a sealing rubber sleeve 62 sleeved on the fixing part 61; the fixing part 61 realizes the assembly connection of the sealing rubber sleeve 62 between the second valve body 50 and the movable iron core rod 34. Specifically, part of the fixing part 61 can be set at the position between the magnetic isolation tube 10 and the first valve body 40, so as to realize the connection and assembly of the fixing part 61.

[0038] The sealing rubber sleeve 62 includes an outer sleeve 621 clamped on the fixing member 61, an inner sleeve 622 partially extending into the fixing member 61, and a connecting portion 623 for connecting the outer sleeve 621 and the inner sleeve 622. The outer sleeve 621 is arranged between the second valve body 50 and the fixing member 61 in a tight fit manner, so as to achieve the assembly seal between the second valve body 50 and the fixing member 61; the movable iron core rod 34 passes through the inner sleeve 622, and the inner sleeve 622 is partially bent under the action of the movable iron core rod 34, and the bent inner sleeve 622 is attached to the part of the movable iron core rod 34 that passes through the inner sleeve 622, so as to achieve the assembly seal between the inner sleeve 622 and the movable iron core rod 34, and further achieve the assembly seal between the second valve body 50 and the movable iron core rod 34.

[0039] In this embodiment, the magnetic isolation tube 10 is connected and fixed to the first valve body 40, so as to realize the assembly connection of the overall structure of the two-position three-way solenoid valve.

[0040] Specifically, a limiting convex plate 11 is provided on the magnetic isolation tube 10, and a slot body 44 capable of clamping the limiting convex plate 11 is provided on the first valve body 40. The magnetic isolation tube 10 and the first valve body 40 can be limited and fixed by the cooperation between the limiting convex plate 11 and the slot body 44. The number of the limiting convex parts 11 is two. Of course, it should be noted that the connection method between the magnetic isolation tube 10 and the first valve body 40 is not limited to that shown in the figure. Those skilled in the art can connect and fix the magnetic isolation tube 10 and the first valve body 40 by welding or clamping according to the needs of use, or provide a slot body on the magnetic isolation tube 10, and set a limiting convex plate matching the slot body on the first valve body 40.

[0041] Among them, a limiting recess 111 is opened on one of the end faces of the limiting protrusion 11, and a limiting protrusion 441 matching with the limiting recess 111 is provided on the slot body 44, and the locking between the limiting protrusion 111 and the slot body 44 is achieved through the concave-convex cooperation between the limiting recess 111 and the limiting protrusion 441.

[0042] In summary, the two-position three-way solenoid valve provided by the present invention, by setting the movable iron core assembly to a split structure, enables the two-position three-way solenoid valve to use the movable iron core assembly to drive the valve seal to achieve complete sealing of the second valve body, thereby solving the technical problem of internal leakage and reducing the overall production and assembly accuracy of the two-position three-way solenoid valve, which has the effect of reducing production costs and assembly costs; at the same time, the two-position three-way solenoid valve has a simple structure, is easy to assemble, can achieve the function of fully cleaning the first valve body and the second valve body, and is suitable for use in vending machines.

[0043] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A two-position three-way solenoid valve, Features: It comprises a magnetic isolation tube, a fixed iron core arranged in the magnetic isolation tube, a movable iron core assembly matched with the fixed iron core, and a first valve body and a second valve body; the first valve body has an inlet pipe and a first outlet pipe, the second valve body is plugged into the first valve body, wherein the second valve body has a second outlet pipe that partially extends out of the first valve body; the movable iron core assembly is a split structure, wherein a valve seal is connected to the portion of the movable iron core assembly extending into the first valve body, the movable iron core assembly can drive the valve seal to perform lifting movement, and the lifted valve seal can control the inlet pipe to selectively connect with the first outlet pipe or the second outlet pipe; The movable iron core assembly comprises a movable iron core, a movable iron core sleeve fixedly connected to the movable iron core, and a movable iron core rod; the movable iron core rod is movably connected to the movable iron core sleeve, wherein a first elastic member is provided between the portion of the movable iron core rod connected to the movable iron core sleeve and the movable iron core sleeve, and the valve seal is fixedly connected to one end of the movable iron core rod extending out of the movable iron core sleeve; The two-position three-way solenoid valve further includes a sealing assembly for assembling and sealing the portion of the second valve body located above the second outlet pipe and the movable iron core rod; The sealing assembly includes a fixing member and a sealing rubber sleeve sleeved on the fixing member; the sealing rubber sleeve includes an outer sleeve portion clamped on the fixing member, an inner sleeve portion partially extending into the fixing member, and a connecting portion for connecting the outer sleeve portion and the inner sleeve portion; the outer sleeve portion is arranged at a position between the second valve body and the fixing member in a tight-fitting manner, the movable iron core rod passes through the inner sleeve portion, wherein the inner sleeve portion is partially bent under the action of the movable iron core rod, and the bent inner sleeve portion is abutted against a portion of the movable iron core rod that passes through the inner sleeve portion; The magnetic isolation tube is provided with a limiting convex plate, and a limiting recess is formed on one of the end faces of the limiting convex plate. The first valve body is provided with a slot body capable of clamping the limiting convex plate, and the slot body is provided with a limiting convex portion matched with the limiting recess. The magnetic isolation tube and the first valve body can be limited and fixed by the cooperation between the limiting convex plate and the slot body.

2. The two-position three-way solenoid valve according to claim 1, Features: The movable iron core rod is provided with a limit baffle at one end extending into the movable iron core sleeve, and the first elastic member is arranged at a position between the limit baffle and the movable iron core sleeve.

3. The two-position three-way solenoid valve according to claim 2, Features: The first elastic member is a spring, and the spring is sleeved on the movable iron core rod.

4. The two-position three-way solenoid valve according to claim 1, Features: The second valve body is provided with a guide column, the movable iron core rod penetrates the guide column and is connected and fixed to the valve seal, wherein the portion of the movable iron core rod disposed in the guide column is in clearance fit with the guide column.

5. The two-position three-way solenoid valve according to claim 1, Features: The first valve opening on the first valve body for cooperating with the valve seal is configured as a conical structure; and / or the second valve opening on the second valve body for cooperating with the valve seal is configured as a conical structure.

6. The two-position three-way solenoid valve according to claim 1, Features: A sealing ring is sleeved on the second valve body, and the second valve body and the first valve body are assembled and sealed by the sealing ring.

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