A combined valve for pipelines

Abstract

The present invention discloses a combined valve for pipelines, which comprises a first valve body, a second valve body and a housing. A main pipeline, a first valve and a second valve are arranged in the housing. The first valve body is connected to the main pipeline through the first valve, and the second valve body is connected to the main pipeline through the second valve. The first valve body comprises a first valve body main body, a first electromagnet assembly, a first sealing rod and a first valve core. The second valve body comprises a second valve body main body, a second electromagnet assembly, a second sealing rod and a second valve core. The combined valve for pipelines provided by the present invention is simple to manufacture, has a stable structure and good sealing effect, and can effectively solve the problem of cross-interchange in the loop system.

Description

Technical Field

[0001] The present invention relates to the field of valves for pipelines. More specifically, the present invention relates to a combined valve for pipelines. Background Art

[0002] Currently, in existing liquid or gas pipelines, when a direction change is required, a double-pump system or an existing cross valve with a dial-type structure is usually adopted. The double-pump system has too high a cost. The original cross valve adopts a dial-type structure, and its disadvantages are unstable commutation sealing performance, easy liquid leakage, affecting the overall performance of the product, and very high manufacturing requirements. This combined valve is simple to manufacture, has a relatively low cost, and good sealing stability. Summary of the Invention

[0003] To achieve these and other advantages in accordance with the present invention, a preferred embodiment of the present invention provides a combined valve for pipelines, including a first valve body, a second valve body, and a housing. A main pipeline, a first valve, and a second valve are provided inside the housing. The first valve body is connected to the main pipeline through the first valve, and the second valve body is connected to the main pipeline through the second valve;

[0004] The first valve body includes a first valve body main body, a first electromagnet assembly, a first sealing rod, and a first valve core. The first valve body main body is connected above the housing and is hollow inside. The first electromagnet assembly is disposed inside the first valve body main body. The first sealing rod is movably inserted through the bottom of the first valve body main body up and down. The moving iron core of the first electromagnet assembly is suspended inside the first valve body main body through a first spring. The bottom end of the first electromagnet assembly faces the other end of the first sealing rod. The first valve includes a first annular pipeline A, a first annular pipeline B, and a first pipeline C. The first annular pipeline A is sleeved outside the first sealing rod in a ring shape. The first annular pipeline B is located below the first annular pipeline A and the two are connected and communicated; The two ends of the first pipeline C are respectively connected to the first annular pipeline B and the main pipeline;

[0005] The second valve body includes a second valve body main body, a second electromagnet assembly, a second sealing rod, and a second valve core. The second valve body main body is connected above the housing and is hollow inside. The moving iron core of the second electromagnet assembly is fixedly arranged at the inner top of the second valve body main body. The second sealing rod is vertically movably inserted through the bottom of the second valve body main body. The second electromagnet assembly is suspended in the second valve body main body through a second spring. The bottom end of the second electromagnet assembly faces the other end of the second sealing rod. The second valve includes a second annular pipe A, a second annular pipe B, and a second pipe C. The second annular pipe A is annularly sleeved outside the second sealing rod. The second annular pipe B is located below the second annular pipe A and the two are connected and communicated. The two ends of the first pipe C are respectively connected to the first annular pipe B and the main pipe.

[0006] When the first electromagnet assembly is in a power-off state, the first spring is in a compressed state, which pulls the first sealing rod and the first valve core upward. The first valve core then seals and cuts off the channel between the first annular pipe B and the first annular pipe A;

[0007] When the second electromagnet assembly is in a power-off state, the second spring is in a compressed state, which compresses the second sealing rod and the second valve core downward. Thus, the second annular pipe B and the second pipe C are sealed and cut off, and the channel between the second annular pipe B and the second annular pipe A is unblocked.

[0008] According to a preferred implementation scheme of the present invention, rubber sealing gaskets are connected to the other ends of the first valve core and the second valve core.

[0009] According to a preferred implementation scheme of the present invention, the first annular pipe A and the second annular pipe A are connected and communicated.

[0010] According to a preferred implementation scheme of the present invention, a water inlet and a water outlet are provided on the housing. The water inlet is connected and communicated with the first annular pipe A, and the water outlet is connected and communicated with the second annular pipe C.

[0011] According to a preferred implementation scheme of the present invention, when the first electromagnet assembly is in a power-on state, it relies on magnetic force to press the sealing rod and the first valve core downward. The first annular pipe B and the first pipe C are sealed and cut off, and then the channel between the first annular pipe B and the first annular pipe A is unblocked;

[0012] When the second electromagnet assembly is in a power-on state, it relies on magnetic force to stretch the second sealing rod and the second valve core upward. The second valve core then temporarily seals the channel between the second annular pipe B and the second annular pipe A.

[0013] According to a preferred embodiment of the present invention, the elastic force of the second spring is greater than 1.2 times the medium flow pressure in the second pipeline C.

[0014] According to a preferred embodiment of the present invention, the longitudinal sections of the first sealing rod and the second sealing rod are H-shaped, and their upper and lower ends are respectively provided with upper sockets and lower sockets. The upper sockets are for the moving iron cores of the first electromagnet assembly / the second electromagnet assembly to be inserted, and the lower sockets are for the first valve core / the second valve core to be inserted. The longitudinal sections of the first valve core and the second valve core are both inverted T-shaped.

[0015] The present invention has at least the following beneficial effects: The combined valve for pipelines provided by the present invention is simple to manufacture, has a stable structure and good sealing effect, and can effectively solve the problem of cross-interchange in the loop system.

[0016] Other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the principle of the combined valve for pipelines in the present invention.

[0018] Figure 2 It is a schematic diagram of the overall structure of the combined valve for pipelines in the present invention.

[0019] Figure 3 It is a sectional view of the structure of the combined valve for pipelines in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] The following further describes the present invention in detail with reference to the drawings, so that those skilled in the art can implement it according to the description in the specification.

[0021] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description can be applied to other embodiments, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not depart from the spirit and scope of the present invention.

[0022] Those skilled in the art should understand that in the disclosure of the present invention, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present invention.

[0023] It can be understood that the term "one" should be construed as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of this element can be multiple. The term "one" should not be construed as a limitation on the quantity.

[0024] As Figures 1-3 shown, a preferred embodiment of the present invention provides a combined valve for pipelines, including a first valve body 100, a second valve body 200, and a housing 300. A main pipeline 400, a first valve, and a second valve are provided inside the housing 300. The first valve body 100 is connected to the main pipeline 400 through the first valve, and the second valve body 200 is connected to the main pipeline 400 through the second valve.

[0025] The first valve body 100 includes a first valve body main body 110, a first electromagnet assembly 120, a first sealing rod 130, and a first valve core 140. The first valve body main body 110 is connected above the housing 300 and is hollow inside. The first electromagnet assembly 120 is arranged inside the first valve body main body 110. The first sealing rod 130 is vertically movably inserted through the bottom of the first valve body main body 110. The moving iron core of the first electromagnet assembly 120 is suspended inside the first valve body main body 110 through a first spring 160. The bottom end of the first electromagnet assembly 120 faces one end of the first sealing rod 130. The first valve core 140 is connected to the other end of the first sealing rod 130. The first valve includes a first annular pipeline A 5A, a first annular pipeline B 5B, and a first pipeline C 5C. The first annular pipeline A 5A is annularly sleeved outside the first sealing rod 130. The first annular pipeline B 5B is located below the first annular pipeline A 5A and the two are connected and communicated. The two ends of the first pipeline C 5C are respectively connected to the first annular pipeline B 5B and the main pipeline 400.

[0026] The second valve body 200 includes a second valve body main body 210, a second electromagnet assembly 220, a second sealing rod 230, and a second valve core 240. The second valve body main body 210 is connected above the housing 300 and is hollow inside. The second electromagnet assembly 220 is disposed inside the second valve body main body 210. The second sealing rod 230 is vertically movably inserted through the bottom of the second valve body main body 210. The moving iron core of the second electromagnet assembly 220 is suspended inside the second valve body main body 210 through a second spring 260. The bottom end of the second electromagnet assembly 220 faces one end of the second sealing rod 230. The second valve core 240 is connected to the other end of the second sealing rod 230. The second valve includes a second annular pipe A 6A, a second annular pipe B 6B, and a second pipe C 6C. The second annular pipe A 6A is annularly sleeved outside the second sealing rod 230. The second annular pipe B 6B is located below the second annular pipe A 6A and the two are connected and communicated with each other. Both ends of the first pipe C 5C are respectively connected to the first annular pipe B 5B and the main pipe 400.

[0027] The first annular pipe A 5A and the second annular pipe A 6A are connected and communicated with each other through a pipe 700.

[0028] An inlet 310 and an outlet 320 are provided on the housing 300. The inlet 310 is connected and communicated with the first annular pipe A 5A. The outlet 320 is connected and communicated with the second annular pipe A 6A.

[0029] The combined valve of the present application has two use states.

[0030] First, when the first electromagnet assembly 120 is in a power-off state, the first spring 160 is in a compressed state. And since the moving iron core of the first electromagnet assembly 120 is not fixedly arranged but is movably arranged, the upward restoring force of the first spring will upwardly pull the first sealing rod 130 and the first valve core 140. The first valve core 140 will then temporarily seal the channel between the first annular pipe B 5B and the first annular pipe A 5A.

[0031] When the second electromagnet assembly 220 is in a power-off state, the second spring 260 is in a compressed state. Since the moving iron core of the second electromagnet assembly is fixedly arranged, the second spring 260 will downwardly compress the second sealing rod 230 and the second valve core 240. At this time, the second valve core 240 does not close the channel, thus keeping the channel between the second annular pipe B 6B and the second annular pipe A 6A unblocked.

[0032] In the above embodiments, the medium enters from the water inlet 310. The first electromagnet assembly 120 presses the first sealing rod 130 and the first valve core 140 upward by the elastic force of the first spring, and the first valve body is in a closed state. The medium can only enter the second annular pipe A 6A through the channel between the second annular pipe B 6B and the second annular pipe A 6A, and then flows out through the water outlet 320 via the second annular pipe A 6A.

[0033] In actual use, the functions of the water inlet 310 and the water outlet 320 can be swapped at any time. After swapping the water inlet 310 and the water outlet 320, the medium enters from the original water outlet 320. The first electromagnet assembly 120 presses the first sealing rod 130 and the first valve core 140 upward by the elastic force of the first spring, and the first valve body is in a closed state. The medium can only enter the second annular pipe A 6A through the channel between the second annular pipe B 6B and the second annular pipe A 6A, and then flows out through the original water inlet �10 via the second annular pipe A 6A.

[0034] Second, when the first electromagnet assembly 120 is in the energized state, it presses the pressing sealing rod and the first valve core 140 downward by magnetic force, so as to make the channel between the first annular pipe B 5B and the first annular pipe A 5A unobstructed;

[0035] When the second electromagnet assembly 220 is in the energized state, it presses the second sealing rod and the second valve core 240 upward by magnetic force, and the second valve core 240 then temporarily seals the channel between the second annular pipe B 6B and the second annular pipe A 6A.

[0036] In the above embodiments, the medium enters from the water inlet 310. The second electromagnet assembly 220 pulls the second sealing rod 230 and the second valve core 240 upward by the magnetic force of the magnet, and the second valve body is in a closed state. It can only enter the first annular pipe A 5A through the channel between the first annular pipe B 5B and the first annular pipe A 5A, and then flows out through the water outlet 320.

[0037] In actual use, the functions of the water inlet 310 and the water outlet 320 can be swapped at any time. After swapping the water inlet 310 and the water outlet 320, the medium enters from the original water outlet 320. The second electromagnet assembly 220 pulls the second sealing rod and the second valve core upward by the magnetic force of the magnet, and the second valve body is in a closed state. It can only enter the first annular pipe A 5A through the channel between the first annular pipe B 5B and the first annular pipe A 5A, and then flows out through the original water inlet 310.

[0038] According to a preferred embodiment of the present invention, the other ends of the first valve core 140 and the second valve core 240 are both connected to a rubber gasket 700. In this way, when the first valve core 140 temporarily seals the channel between the first annular pipe B 5B and the first annular pipe A 5A, a good sealing effect can be achieved. When the second valve core 240 further temporarily seals the channel between the second annular pipe B 6B and the second annular pipe A 6A, a good sealing effect can be achieved.

[0039] According to a preferred embodiment of the present invention, the elastic force of the first spring is greater than 1.2 times the medium flow pressure in the first pipe C 5C. In this way, it can be better ensured that when the first electromagnet assembly 120 is in a power-off state, the first spring can press down the first sealing rod and the first valve core 140 to temporarily seal the channel between the first annular pipe B 5B and the first annular pipe A 5A;

[0040] The longitudinal sections of the first sealing rod 130 and the second sealing rod 230 are in an H shape, and their upper and lower ends respectively have an upper socket and a lower socket. The upper socket is for the moving iron core of the first electromagnet assembly 120 / second electromagnet assembly 220 to be inserted, and the lower socket is for the first valve core 140 / second valve core 240 to be inserted. The longitudinal sections of the first valve core 140 and the second valve core 240 are both in an inverted T shape.

[0041] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A combined valve for pipelines, characterized in that, It includes a first valve body, a second valve body and a housing. A main pipeline, a first valve and a second valve are provided in the housing. The first valve body is connected to the main pipeline through the first valve, and the second valve body is connected to the main pipeline through the second valve; The first valve body includes a first valve body main body, a first electromagnet assembly, a first sealing rod and a first valve core. The first valve body main body is connected above the housing and is hollow inside. The first electromagnet assembly is arranged inside the first valve body main body. The first sealing rod is movably inserted through the bottom of the first valve body main body. The moving iron core of the first electromagnet assembly is suspended inside the first valve body main body through a first spring. The bottom end of the first electromagnet assembly faces the other end of the first sealing rod. The first valve includes a first annular pipeline A, a first annular pipeline B and a first pipeline C. The first annular pipeline A is sleeved outside the first sealing rod in a ring shape. The first annular pipeline B is located below the first annular pipeline A and the two are connected. Both ends of the first pipeline C are respectively connected to the first annular pipeline B and the main pipeline; The second valve body includes a second valve body main body, a second electromagnet assembly, a second sealing rod and a second valve core. The second valve body main body is connected above the housing and is hollow inside. The moving iron core of the second electromagnet assembly is fixedly arranged at the top inside the second valve body main body. The second sealing rod is movably inserted through the bottom of the second valve body main body. The second electromagnet assembly is suspended inside the second valve body main body through a second spring. The bottom end of the second electromagnet assembly faces the other end of the second sealing rod. The second valve includes a second annular pipeline A, a second annular pipeline B and a second pipeline C. The second annular pipeline A is sleeved outside the second sealing rod in a ring shape. The second annular pipeline B is located below the second annular pipeline A and the two are connected. Both ends of the first pipeline C are respectively connected to the first annular pipeline B and the main pipeline; When the first electromagnet assembly is in a power-off state, the first spring is in a compressed state, which pulls the first sealing rod and the first valve core upward, and the first valve core further seals and cuts off the channel between the first annular pipeline B and the first annular pipeline A; When the second electromagnet assembly is in a power-off state, the second spring is in a compressed state, which compresses the second sealing rod and the second valve core downward, so that the second annular pipeline B and the second pipeline C are sealed off, and the channel between the second annular pipeline B and the second annular pipeline A is unblocked.

2. The combined valve for pipelines according to claim 1, characterized in that, Rubber sealing gaskets are connected to the other ends of the first valve core and the second valve core.

3. The combined valve for pipeline according to claim 1, wherein The first annular pipeline A and the second annular pipeline A are connected.

4. The combined valve for pipeline according to claim 1, characterized in that, An inlet and an outlet are provided on the housing. The inlet is connected to the first annular pipeline A, and the outlet is connected to the second annular pipeline A.

5. The combined valve for pipeline according to claim 1, wherein When the first electromagnet assembly is in the energized state, it relies on magnetic force to press the sealing rod and the first valve core downward, sealing off the first annular pipeline B and the first pipeline C, and thus the passage between the first annular pipeline B and the first annular pipeline A is unblocked; When the second electromagnet assembly is in the energized state, it relies on magnetic force to stretch the second sealing rod and the second valve core upward, and the second valve core then temporarily seals the passage between the second annular pipeline B and the second annular pipeline A.

6. The combined valve for pipeline according to claim 1, wherein, The elastic force of the second spring is greater than 1.2 times the medium flow pressure in the second pipeline C.

7. The combined valve for pipeline according to claim 1, characterized in that, The longitudinal sections of the first sealing rod and the second sealing rod are in the shape of "H", and their upper and lower ends respectively have upper sockets and lower sockets. The upper sockets are for the moving iron cores of the first electromagnet assembly / second electromagnet assembly to be inserted, and the lower sockets are for the first valve core / second valve core to be inserted. The longitudinal sections of the first valve core and the second valve core are both in the shape of an inverted "T".

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