Auxiliary water feeding valve with low pressure and low flow resistance

Abstract

The utility model discloses an auxiliary water feeding valve with low pressure and low flow resistance, which belongs to the technical field of water feeding valves, and comprises a valve casing, a main water inlet and a main water outlet are arranged on the valve casing, an exhaust valve water inlet and an exhaust valve water outlet are arranged between the main water inlet and the main water outlet on the valve casing, and the exhaust valve water inlet and the exhaust valve water outlet are communicated with the main water inlet and the main water outlet. A valve turning plate is rotationally arranged in the position, between the exhaust valve water inlet and the exhaust valve water outlet, of the interior of the valve shell. The valve is arranged for the non-self-priming pump, can feed water to the non-self-priming pump through the bypass pipeline and automatically assist the non-self-priming pump to exhaust and feed water under the unattended condition, closes the bypass pipeline after the non-self-priming pump works normally, and exhausts and feeds water to the non-self-priming pump through the valve.

Description

Technical Field

[0001] The utility model belongs to the technical field of water supply valves and relates to an auxiliary water supply valve with low pressure and low flow resistance. Background Art

[0002] When a non-self-priming pump works, it is necessary to manually fill water into the non-self-priming pump to discharge the air inside its pump body to form a negative pressure environment. Even after the non-self-priming pump is manually filled with water, during the working process of the non-self-priming pump, if there are a large number of bubbles in the liquid entering the non-self-priming pump, the negative pressure environment inside the non-self-priming pump will also be damaged, which will lead to the shutdown of the non-self-priming pump. Therefore, during the working process of the traditional non-self-priming pump, not only does it need to be manually filled with water, but it also needs to constantly observe whether the non-self-priming pump is working properly, and manually fill water into the non-self-priming pump again when the non-self-priming pump stops abnormally, which is very labor-consuming. Once there is no one on duty, it is difficult to ensure the automatic water filling of the non-self-priming pump.

[0003] Therefore, aiming at the lack of auxiliary water filling for non-self-priming pumps in the prior art, the utility model discloses an auxiliary water supply valve with low pressure and low flow resistance. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an auxiliary water supply valve with low pressure and low flow resistance, which can fill water into the non-self-priming pump through a bypass pipeline in the case of no one on duty, automatically assist the non-self-priming pump to perform the exhaust and water filling operation, and close the bypass pipeline after the non-self-priming pump works normally, and perform the exhaust and water filling of the non-self-priming pump through the valve itself.

[0005] The utility model is realized by the following technical solutions:

[0006] An auxiliary water supply valve with low pressure and low flow resistance includes a valve housing. A main water inlet and a main water outlet are arranged on the valve housing. An exhaust valve water inlet and an exhaust valve water outlet are arranged between the main water inlet and the main water outlet on the valve housing. A valve flap is rotatably arranged inside the valve housing between the exhaust valve water inlet and the exhaust valve water outlet.

[0007] When it is closed between the exhaust valve water inlet and the exhaust valve water outlet, that is, the exhaust valve water inlet and the exhaust valve water outlet are not communicated, at this time, the fluid enters the valve housing through the main water inlet and directly acts on one side of the valve flap close to the main water inlet. Driven by the fluid pressure, the valve flap rotates towards the direction close to the main water outlet to open, so that the fluid flows to the main water outlet.

[0008] When the exhaust valve is open between the water inlet and the water outlet, that is, the water inlet of the exhaust valve is connected to the water outlet of the exhaust valve. At this time, the fluid enters the valve housing through the main water inlet, then flows through the water inlet of the exhaust valve to the water outlet of the exhaust valve and re-enters the valve housing. At this time, part of the fluid flows out of the valve housing through the main water outlet, and part of the fluid acts on one side of the valve flap away from the main water inlet, causing the valve flap to close the inside of the valve housing, thereby ensuring that the fluid cannot directly flow from the main water inlet to the main water outlet. The closing of the valve flap depends on its own gravity and the action of part of the fluid from the water outlet of the exhaust valve.

[0009] To better implement the present invention, further, it further includes a diaphragm exhaust pump. One end of the diaphragm exhaust pump is connected to the water inlet of the exhaust valve through a pipeline, and the other end of the diaphragm exhaust pump is connected to the water outlet of the exhaust valve through a pipeline.

[0010] To better implement the present invention, further, a limiting step is provided inside the valve housing between the water inlet of the exhaust valve and the water outlet of the exhaust valve. One end of the valve flap is hinged to the inner wall of the valve housing, and the other end of the valve flap is in contact connection with the limiting step on the side close to the main water inlet.

[0011] To better implement the present invention, further, a water guiding member is provided on the inner top surface of the valve housing corresponding to the water outlet of the exhaust valve. The two sides of the water guiding member are respectively provided with a first water guiding surface and a second water guiding surface. The first water guiding surface is provided corresponding to the side of the valve flap away from the main water inlet, and the second water guiding surface is provided corresponding to the main water outlet.

[0012] To better implement the present invention, further, the axis of the main water inlet and the axis of the main water outlet are located in the same plane.

[0013] To better implement the present invention, further, the axis of the water inlet of the exhaust valve and the axis of the water outlet of the exhaust valve are located in different planes.

[0014] To better implement the present invention, further, the valve housing includes a valve bottom plate and a valve housing body. The valve housing body is fixedly installed on the valve bottom plate through connecting bolts.

[0015] To better implement the present invention, further, a sealing ring is provided between the mating surfaces of the valve bottom plate and the valve housing body.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] The utility model is provided with an exhaust valve water inlet and an exhaust valve water outlet between the main water inlet and the main water outlet on the valve housing, and a valve flap is rotatably arranged inside the valve housing between the exhaust valve water inlet and the exhaust valve water outlet; when a non-self-priming pump needs to draw water, the exhaust valve water inlet and the exhaust valve water outlet are communicated, so that the fluid enters the non-self-priming pump through the bypass pipeline for exhaust water intake, and at the same time, the fluid acts on one side of the valve flap far away from the main water inlet to ensure that the valve flap closes the flow channel inside the valve housing; after the non-self-priming pump works normally, the exhaust valve water inlet and the exhaust valve water outlet are closed, and at this time, the fluid directly flows from the main water inlet to the main water outlet to realize the water intake of the non-self-priming pump, without affecting the normal operation of the non-self-priming pump. Description of the Drawings

[0018] Figure 1 Figure 6 is a three-dimensional structural schematic diagram of the auxiliary water intake valve;

[0019] Figure 2 Figure 10 is an internal sectional view of the auxiliary water intake valve;

[0020] Figure 3 Figure 14 is a schematic diagram of the valve flap being opened;

[0021] Figure 4 Figure 18 is a schematic diagram of the valve flap being closed;

[0022] Figure 5 Figure 22 is a bottom view of the auxiliary water intake valve.

[0023] Wherein: 1-valve housing; 2-main water inlet; 3-main water outlet; 4-exhaust valve water inlet; 5-exhaust valve water outlet; 6-valve flap; 7-diaphragm exhaust pump; 8-limit step; 9-water guiding member; 11-valve bottom plate; 12-valve housing body; 13-sealing ring; 91-first water guiding surface; 92-second water guiding surface. Detailed Description of the Embodiment

[0024] The following detailed descriptions are all illustrative and are intended to provide further explanations of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the present utility model clearly states otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] For the convenience of description, in the present utility model, if the words "upper", "lower", "left", and "right" appear, they only indicate the same directions as the upper, lower, left, and right of the attached drawings themselves, and do not limit the structure. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0027] Term explanation part: Terms such as "installation", "connection", "connection", and "fixation" in the present utility model should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection, an electrical connection, a direct connection, or an indirect connection through an intermediate medium, and it can be an internal connection between two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Embodiment 1:

[0029] An auxiliary water inlet valve with low pressure and low flow resistance in this embodiment, as Figure 1 and Figure 2 shown, includes a valve housing 1. A main water inlet 2 and a main water outlet 3 are provided on the valve housing 1. An exhaust valve water inlet 4 and an exhaust valve water outlet 5 are provided on the valve housing 1 between the main water inlet 2 and the main water outlet 3. A valve flap 6 is rotatably arranged inside the valve housing 1 between the exhaust valve water inlet 4 and the exhaust valve water outlet 5.

[0030] The main water outlet 3 on the valve housing 1 is connected to a non-self-priming pump. An exhaust valve water inlet 4 and an exhaust valve water outlet 5 are provided on the valve housing 1 between the main water inlet 2 and the main water outlet 3. The exhaust valve water inlet 4 and the exhaust valve water outlet 5 are connected through a bypass pipeline arranged side by side on one side of the valve housing 1, and an auxiliary power device is provided on the bypass pipeline. A valve flap 6 is rotatably arranged inside the valve housing 1 between the exhaust valve water inlet 4 and the exhaust valve water outlet 5. When the valve flap 6 rotates in the direction from the main water inlet 2 towards the main water outlet 3, the flow channel inside the valve housing 1 is opened. When the valve flap 6 rotates in the direction from the main water outlet 3 towards the main water inlet 2, the flow channel inside the valve housing 1 is closed.

[0031] In the case where no one provides the priming power for the non - self - priming pump, the auxiliary power device is turned on. At this time, the water inlet 4 of the exhaust valve is connected to the water outlet 5 of the exhaust valve, and the flow sequence of the fluid is the main water inlet 2 → the water inlet 4 of the exhaust valve → the water outlet 5 of the exhaust valve → the inside of the valve housing → the main water outlet 3, thereby realizing automatic water supply for the non - self - priming pump without unattended operation. And the fluid that re - enters the inside of the valve housing 1 through the water outlet 5 of the exhaust valve acts on the side of the valve flap 6 away from the main water inlet 2, causing the valve flap 6 to close the flow channel inside the valve housing 1. At this time, the fluid flows through the bypass pipeline to the non - self - priming pump.

[0032] When the auxiliary power device is turned off, that is, the water inlet 4 of the exhaust valve is disconnected from the water outlet 5 of the exhaust valve. At this time, the fluid entering the inside of the valve housing 1 through the main water inlet 2 acts on the side of the valve flap 6 close to the main water inlet 2, and under the action of the fluid pressure, the valve flap 6 opens the flow channel inside the valve housing 1, without affecting the water supply work of the non - self - priming pump.

[0033] Furthermore, the auxiliary power device includes a diaphragm exhaust pump 7. One end of the diaphragm exhaust pump 7 is connected to the water inlet 4 of the exhaust valve through a pipeline, and the other end of the diaphragm exhaust pump 7 is connected to the water outlet 5 of the exhaust valve through a pipeline. When the diaphragm exhaust pump 7 works, it connects the water inlet 4 of the exhaust valve to the water outlet 5 of the exhaust valve. When the diaphragm exhaust pump 7 stops, it disconnects the water inlet 4 of the exhaust valve from the water outlet 5 of the exhaust valve.

[0034] Embodiment 2:

[0035] An auxiliary water supply valve with low pressure and low flow resistance is improved on the basis of Embodiment 1. As Figure 3 shown, a limiting step 8 is provided inside the valve housing 1 between the water inlet 4 of the exhaust valve and the water outlet 5 of the exhaust valve. One end of the valve flap 6 is hinged to the inner wall of the valve housing 1, and the other end of the valve flap 6 on the side close to the main water inlet 2 is in contact connection with the limiting step 8.

[0036] One end of the valve flap 6 is rotatably connected to the inner wall of the valve housing 1 through a hinge rotating shaft, and the other end of the valve flap 6 on the side close to the main water inlet 2 is in contact with the limiting step 8. When the diaphragm exhaust pump 7 is turned on, part of the fluid acts on the side of the valve flap 6 away from the main water inlet 2, thereby driving the valve flap 6 to rotate in the direction from the main water outlet 3 towards the main water inlet 2, so that the valve flap 6 contacts the limiting step 8 to close the flow channel inside the valve housing 1. When the diaphragm exhaust pump 7 is turned off, the fluid acts on the side of the valve flap 6 close to the main water inlet 2, thereby driving the valve flap 6 to rotate in the direction from the main water inlet 2 towards the main water outlet 3, so that the valve flap 6 opens the flow channel inside the valve housing 1.

[0037] Other parts of this embodiment are the same as those of Embodiment 1, so they will not be elaborated here.

[0038] Example 3:

[0039] An auxiliary water inlet valve with low pressure and low flow resistance, which is improved on the basis of Example 1 or 2. As Figure 4 shown, a water guiding member 9 is provided on the inner top surface of the valve housing 1 corresponding to the position of the exhaust valve water outlet 5. A first water guiding surface 91 and a second water guiding surface 92 are respectively provided on both sides of the water guiding member 9. The first water guiding surface 91 is provided corresponding to the side of the valve flap 6 away from the main water inlet 2, and the second water guiding surface 92 is provided corresponding to the main water outlet 3.

[0040] The first water guiding surface 91 is an arc surface provided towards the side of the valve flap 6 away from the main water inlet 2. The inlet end of the first water guiding surface 91 corresponds to the fluid flowing out of the exhaust valve water outlet 5, and the outlet end of the first water guiding surface 91 corresponds to the side of the valve flap 6 away from the main water inlet 2. By providing the first water guiding surface 91, part of the fluid from the exhaust valve water outlet 5 can be guided to the side of the valve flap 6 away from the main water inlet 2 to ensure that the valve flap 6 tightly closes the internal flow channel of the valve housing 1.

[0041] The second water guiding surface 92 is an arc surface provided towards the main water outlet 3. The inlet end of the second water guiding surface 92 corresponds to the fluid flowing out of the exhaust valve water outlet 5, and the outlet end of the second water guiding surface 92 corresponds to the main water outlet 3. By providing the second water guiding surface 92, part of the fluid from the exhaust valve water outlet 5 can be guided to the main water outlet 3.

[0042] Other parts of this embodiment are the same as those of Example 1 or 2, so they will not be described in detail.

[0043] Example 4:

[0044] An auxiliary water inlet valve with low pressure and low flow resistance, which is improved on the basis of any one of Examples 1 - 3. The axis of the main water inlet 2 and the axis of the main water outlet 3 are in the same plane; the axis of the exhaust valve water inlet 4 and the axis of the exhaust valve water outlet 5 are in different planes.

[0045] As Figure 5 shown, the axis of the main water inlet 2 and the axis of the main water outlet 3 are on the neutral plane of the valve housing 1, and the axis of the exhaust valve water inlet 4 and the axis of the exhaust valve water outlet 5 are symmetrically arranged on different planes with respect to the neutral plane of the valve housing 1. Placing the axis of the main water inlet 2 and the axis of the main water outlet 3 in the same plane can ensure the smoothness of the fluid flow in the internal flow channel of the valve housing 1.

[0046] Other parts of this embodiment are the same as any one of Examples 1 - 3, so they will not be described in detail.

[0047] Example 5:

[0048] An auxiliary water supply valve with low pressure and low flow resistance, which is improved on the basis of any one of Embodiments 1-4. The valve housing 1 includes a valve bottom plate 11 and a valve housing 12. The valve housing 12 is fixedly installed on the valve bottom plate 11 through connecting bolts. The valve bottom plate 11 is fixedly clamped at the opening of the valve housing 12 through connecting bolts. A sealing ring 13 is arranged between the mating surfaces of the valve bottom plate 11 and the valve housing 12. The sealing ring 13 ensures the sealing between the valve bottom plate 11 and the valve housing 12, avoiding internal fluid leakage.

[0049] Other parts of this embodiment are the same as any one of Embodiments 1-4, so they will not be described in detail.

[0050] The above are only the preferred embodiments of the present invention, and do not impose any formal limitations on the present invention. Any simple modifications and equivalent changes made to the above embodiments based on the technical essence of the present invention all fall within the protection scope of the present invention.

Claims

1. A low-pressure and low-flow resistance auxiliary water supply valve, comprising a valve housing (1), characterized in that: The valve housing (1) is provided with a main water inlet (2) and a main water outlet (3); an exhaust valve water inlet (4) and an exhaust valve water outlet (5) are provided on the valve housing (1) between the main water inlet (2) and the main water outlet (3); and a valve flap (6) is rotatably provided inside the valve housing (1) between the exhaust valve water inlet (4) and the exhaust valve water outlet (5).

2. A low-pressure and low-flow-resistance auxiliary water supply valve according to claim 1, characterized in that: It also comprises a diaphragm exhaust pump (7), one end of which is connected to the exhaust valve water inlet (4) via a pipeline, and the other end of which is connected to the exhaust valve water outlet (5) via a pipeline.

3. A low-pressure and low-flow-resistance auxiliary water supply valve according to claim 2, characterized in that: A limiting step (8) is provided inside the valve housing (1) between the exhaust valve water inlet (4) and the exhaust valve water outlet (5); one end of the valve flap (6) is hinged to the inner wall of the valve housing (1); and the other end of the valve flap (6) is in contact with the limiting step (8) on a side close to the main water inlet (2).

4. A low-pressure and low-flow-resistance auxiliary water supply valve according to claim 3, characterized in that: A water guide member (9) is provided on the inner top surface of the valve housing (1) at a position corresponding to the exhaust valve water outlet (5), and a first water guide surface (91) and a second water guide surface (92) are provided on both sides of the water guide member (9), the first water guide surface (91) being provided corresponding to a side of the valve flap (6) away from the main water inlet (2), and the second water guide surface (92) being provided corresponding to the main water outlet (3).

5. A low-pressure and low-flow-resistance auxiliary water supply valve according to any one of claims 1 to 4, characterized in that: The axis of the main water inlet (2) and the axis of the main water outlet (3) are located on the same plane.

6. A low-pressure and low-flow-resistance auxiliary water supply valve according to any one of claims 1 to 4, characterized in that: The axis of the exhaust valve water inlet (4) and the axis of the exhaust valve water outlet (5) are located on different planes.

7. A low-pressure and low-flow-resistance auxiliary water supply valve according to any one of claims 1 to 4, characterized in that: The valve housing (1) comprises a valve bottom plate (11) and a valve casing (12); the valve casing (12) is fixedly mounted on the valve bottom plate (11) via connecting bolts.

8. The low-pressure and low-flow-resistance auxiliary water supply valve according to claim 7, characterized in that: A sealing ring (13) is provided between the joint surfaces of the valve bottom plate (11) and the valve housing (12).

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