Anti-siphon water pipe connector

Abstract

The utility model relates to the technical field of water pipe connectors, in particular to an anti-siphon water pipe connector. An anti-siphon water pipe connector comprises a connector body, and a fluid channel is formed in the connector body. The two ends of the connector body are provided with a water inlet connector and a water outlet connector respectively, the connector body is provided with a pressure relief valve, and the pressure relief valve comprises a pressure relief pipe formed on the connector body and communicated with the fluid channel; the cap is arranged at the end of the pressure relief pipe, an air hole is formed in the cap in a penetrating mode, and when the cap is arranged at the end of the pressure relief pipe, the air hole communicates with the interior of the pressure relief pipe; the steel ball is movably arranged in the pressure relief pipe; when the pressure applied to the steel ball by the fluid in the fluid channel is larger than the gravity of the steel ball, the steel ball is pushed by the fluid to block the air hole.

Description

Technical Field

[0001] The utility model relates to the technical field of water pipe joints, in particular to an anti-siphon water pipe joint. Background Art

[0002] The siphon phenomenon is a very common physical phenomenon in life. When the two ends of a water pipe are submerged in water at different depths, the water will flow from the end with higher hydraulic pressure to the end with lower hydraulic pressure under the action of pressure. Although people can use the siphon phenomenon to provide convenience for life.

[0003] However, sometimes the siphon phenomenon can also affect people's work. For example, when the water in a container needs to be emptied, as the water pump continuously pumps water from the container that needs to be drained, the fluid inside the container that needs to be drained decreases, resulting in a decrease in pressure. The hydraulic pressure at the drainage end of the water pipe may be higher than the hydraulic pressure at the pumping end of the water pipe, resulting in a siphon phenomenon, which affects the pumping work.

[0004] Therefore, some anti-siphon water pipe structures have appeared on the market to avoid the occurrence of siphon phenomenon and ensure the smooth progress of pumping work. However, the existing anti-siphon water pipe joints are relatively cumbersome in production and assembly, and the subsequent maintenance process is not convenient for maintenance and replacement of parts. Utility Model Content

[0005] The utility model aims to provide an anti-siphon water pipe joint which has a simple structure and is convenient for assembly and maintenance.

[0006] The purpose of this utility model is achieved in this way:

[0007] An anti-siphon water pipe joint, comprising a joint body, wherein a fluid channel is formed in the joint body;

[0008] The two ends of the joint body are respectively provided with a water inlet interface and a water outlet interface, and the joint body is provided with a pressure relief valve, and the pressure relief valve includes:

[0009] A pressure relief pipe, which is formed on the joint body and is connected to the fluid channel;

[0010] A cap is arranged at the end of the pressure relief pipe, and an air hole is formed through the cap. When the cap is arranged at the end of the pressure relief pipe, the air hole is connected to the inside of the pressure relief pipe;

[0011] a sealing member movably disposed in the pressure relief pipe;

[0012] When the pressure exerted on the sealing member by the fluid in the fluid channel is greater than the gravity of the sealing member, the sealing member will be pushed by the fluid and block the air hole.

[0013] Preferably, a through hole is opened on the side wall of the fluid channel, the through hole is connected to the interior of the pressure relief pipe, and the sealing member cannot pass through the through hole.

[0014] Preferably, a gasket is further provided in the pressure relief pipe, and the gasket is attached to the inner wall of the pressure relief pipe;

[0015] The seal rests against the inner side of the gasket.

[0016] Preferably, the gasket may be made of hard plastic or soft rubber.

[0017] Preferably, a convex portion is formed on the cap, and the air hole passes through the convex portion;

[0018] When the cap is disposed at the end of the pressure relief pipe, the protrusion can extend into the pressure relief pipe.

[0019] Preferably, a handle is provided on the cap.

[0020] Preferably, the cap is made of hard plastic or soft rubber.

[0021] Preferably, the water inlet interface can be sleeved on the outside of the water inlet end of the joint body;

[0022] A clamping hole is formed on the side wall of the water inlet end, and a clamping part is formed on the inner side wall of the water inlet interface. The clamping part can be inserted into the clamping hole and connect the water inlet interface to one end of the joint body.

[0023] Preferably, an abutment portion is protrudingly formed on the clamping portion;

[0024] A sealing ring is also provided in the water inlet end;

[0025] When the water inlet interface is connected to one end of the joint body, the abutment portion can pass through the clamping hole and extend into the fluid channel, so that the sealing ring can abut against the abutment portion.

[0026] Preferably, the water outlet interface is screwed onto the water outlet end of the joint body;

[0027] A serration is formed on the inner side of the water outlet interface, and the serration is used to cooperate with the water outlet end to clamp the water outlet pipe.

[0028] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0029] 1. The safety valve of this technical solution has a simple structure and a stable working mode. Through a seal arranged in the pressure relief pipe, when the hydraulic pressure in the fluid channel is sufficient, the seal will block the air hole of the cap to maintain the pressure in the fluid channel stable. When the pressure in the fluid channel drops, the seal will drop under the action of gravity, causing the air hole to open, destroying the sealing state in the fluid channel and preventing the siphon effect from occurring.

[0030] 2. When assembling this technical solution, you only need to put the gasket and the seal into the pressure relief pipe in sequence, and then cover the cap to complete the installation. Subsequent maintenance is also very simple, and parts can be quickly replaced without disassembling the entire anti-siphon joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the utility model;

[0032] Figure 2 It is a cross-sectional view of the utility model;

[0033] Figure 3 It is a schematic diagram of the utility model when performing water pumping.

[0034] Figure 4 It is a partial cross-sectional view of the anti-siphon joint of the utility model when it is in a working state.

[0035] Reference numerals:

[0036] 1. Connector body; 11. Water inlet end; 12. Water outlet end; 13. Fluid channel; 14. Through hole; 15. Clamp hole;

[0037] 2. Pressure relief valve;

[0038] 3. Pressure relief pipe;

[0039] 4. Cover cap; 41. Air hole; 42. Raised part; 43. Handle;

[0040] 5. Seal; 51. Gasket;

[0041] 6. water inlet interface; 61. clamping portion; 62. abutting portion;

[0042] 7. Water outlet interface; 71. Sawtooth portion;

[0043] 8. Sealing ring;

[0044] 9. Anti-siphon joint; 91. Water pump; 92. Drain outlet; 93. Water inlet pipe; 94. Water outlet pipe. DETAILED DESCRIPTION

[0045] The following are specific embodiments of the present invention, and the technical solution of the present invention is further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0046] Embodiment 1:

[0047] like Figure 1 and Figure 2 An anti-siphon water pipe joint shown includes a joint body 1 , and a fluid channel 13 is formed on the inner side of the joint body 1 .

[0048] The two ends of the joint body 1 are respectively provided with a water inlet interface 6 and a water outlet interface 7. When in use, the water inlet pipe 93 is connected to the water inlet interface 6, and the water outlet pipe 94 is connected to the water outlet interface 7, so that the water flow in the water inlet pipe 93 can enter the water outlet pipe 94 through the fluid channel 13.

[0049] However, siphon phenomenon may occur during the water pumping process, affecting the normal progress of the pumping work.

[0050] Specific as Figure 3 As shown, one end of the water inlet pipe 93 is connected to the anti-siphon joint 9, and the other end of the water inlet pipe 93 is connected to the water pump 91, and the water pump 91 is placed in the container that needs to be emptied.

[0051] When the water pump 91 is started to drain water, the liquid level in the container to be emptied will gradually drop, and if the drainage outlet 92 of the water outlet pipe 94 is submerged below the liquid level, the water pressure at the drainage outlet 92 may be greater than the hydraulic pressure inside the container to be emptied. Under the action of the hydraulic pressure, the water flow will have a tendency to flow back from the drainage outlet 92, thereby causing the formation of a siphon phenomenon, which will affect the normal pumping work.

[0052] A pressure relief valve 2 is provided on the joint body 1. The pressure relief valve 2 is used to open when a siphon phenomenon occurs in the fluid channel 13, allowing air flow to enter the fluid channel 13, and preventing the occurrence of the siphon phenomenon by destroying the sealing state inside the fluid channel 13, thereby preventing the fluid from flowing back and affecting the pumping effect.

[0053] The pressure relief valve 2 includes:

[0054] A pressure relief pipe 3, which is formed on the joint body 1, and the pressure relief pipe 3 is connected to the fluid channel 13;

[0055] The cap 4 is arranged at the end of the pressure relief pipe 3. The cap 4 is formed with an air hole 41. When the cap 4 is arranged at the end of the pressure relief pipe 3, the air hole 41 is connected to the inside of the pressure relief pipe 3.

[0056] The seal 5 is movably arranged in the pressure relief pipe 3. The shape of the seal 5 is preferably a sphere. The density of the material making the seal 5 should be at least greater than the density of water, so that when the fluid pressure in the fluid channel 13 decreases, the seal 5 can descend under the action of gravity, so that the seal 5 no longer blocks one end of the air hole 41, so that air can enter the fluid channel 13.

[0057] When the pressure exerted by the fluid in the fluid channel 13 on the sealing member 5 is greater than the weight of the sealing member 5 , the sealing member 5 will be pushed by the fluid and block the air hole 41 .

[0058] In this embodiment, the sealing member 5 is a steel ball.

[0059] When the pumping operation is carried out smoothly, the pressure exerted by the fluid in the fluid channel 13 on the seal 5 is greater than the gravity of the seal 5 itself, so that the seal 5 moves upward and blocks the air hole 41. With the air hole 41 blocked, a closed environment is formed in the fluid channel 13.

[0060] When the water pressure in the fluid channel 13 decreases, it means that a siphon phenomenon has occurred and the water in the pipe has flowed back. The reduced water pressure can no longer support the gravity of the seal 5 itself. The seal will sink under the action of gravity and separate from the air hole 41, allowing the air flow to enter the fluid channel 13, destroying the closed environment in the fluid channel 13, thereby preventing the formation of the siphon phenomenon.

[0061] Specific as Figure 2 and Figure 4 As shown, a through hole 14 is formed on the side wall of the fluid channel 13, the through hole 14 is connected to the inside of the pressure relief pipe 3, and the seal 5 cannot pass through the through hole 14. This prevents the seal 5 from falling into the fluid channel 13 when the pressure of the fluid in the fluid channel 13 on the seal 5 is reduced.

[0062] Furthermore, a gasket 51 is provided in the pressure relief pipe 3 , and the gasket 51 is attached to the inner wall of the pressure relief pipe 3 .

[0063] The seal 5 rests against the inner side of the gasket 51 , and the gasket 51 can effectively limit the movement path of the seal 5 , ensuring that when the seal 5 is lifted by the pressure of the fluid in the fluid channel 13 , the seal 5 can accurately rest against the end of the pore 41 to close the pore 41 .

[0064] As a preferred embodiment, the gasket 51 may be made of hard plastic or soft rubber.

[0065] like Figure 1-Figure 4As shown, a protrusion 42 is formed on the cap 4, and the air hole 41 passes through the protrusion 42. When the cap 4 is set at the end of the pressure relief pipe 3, the protrusion 42 can extend into the pressure relief pipe 3, and the air hole 41 can lead to the inside of the pressure relief pipe 3.

[0066] like Figure 1-Figure 4 As shown, a handle 43 is provided on the cover cap 4 , and the cover cap can be easily removed from the end of the pressure relief pipe 3 through the handle 43 .

[0067] Furthermore, the cap 4 is made of hard plastic or soft rubber.

[0068] like Figure 2 and Figure 4 As shown, the water inlet interface 6 can be sleeved on the outer side of the water inlet end 11 of the joint body 1 .

[0069] A clamping hole 15 is formed on the side wall of the water inlet end 11, and a clamping portion 61 is formed on the inner side wall of the water inlet interface 6. The clamping portion 61 can be inserted into the clamping hole 15 and connect the water inlet interface 6 to one end of the joint body 1. By adopting the clamping method, it is convenient to connect the water inlet interface 6 and the joint body 1.

[0070] Furthermore, an abutting portion 62 is protrudingly formed on the clamping portion 61 .

[0071] A sealing ring 8 is also provided inside the water inlet end 11 .

[0072] When the water inlet interface 6 is connected to one end of the joint body 1, the abutment portion 62 can pass through the clamping hole 15 and extend into the fluid channel 13, so that the sealing ring 8 can abut against the abutment portion 62. The sealing ring can prevent the water inlet pipe 93 from leaking when it is connected to the water inlet end 11 of the joint body 1.

[0073] like Figure 2 and Figure 4 As shown, the water outlet interface 7 is screwed onto the water outlet end 12 of the joint body 1;

[0074] A serration portion 71 is formed on the inner side of the water outlet interface 7 , and the serration portion 71 is used to cooperate with the water outlet end 12 to clamp the water outlet pipe.

[0075] Embodiment 2:

[0076] like Figure 4 As shown, this embodiment is basically the same as the first embodiment, except that the gasket 51 of this embodiment is attached to the inner wall of the pressure relief pipe 3. After the raised portion 42 of the cap 4 is inserted into the pressure relief pipe 3, the outer side of the raised portion 42 is attached to the inner side end of the gasket 51.

[0077] Since the friction coefficient between the protrusion 42 and the gasket 51 is relatively large, a higher friction force can be provided, thereby further preventing the protrusion 42 from being separated from the pressure relief pipe 3 and improving the connection strength.

[0078] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

[0079] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0080] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0081] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

Claims

1. An anti-siphon water pipe joint, characterized in that: It comprises a joint body (1), wherein a fluid channel (13) is formed in the joint body (1); The two ends of the joint body (1) are respectively provided with a water inlet interface (6) and a water outlet interface (7), and the joint body (1) is provided with a pressure relief valve (2), and the pressure relief valve (2) comprises: a pressure relief pipe (3) formed on the joint body (1), the pressure relief pipe (3) being connected to the fluid channel (13); A cap (4) is arranged at the end of the pressure relief pipe (3), and an air hole (41) is formed through the cap (4). When the cap (4) is arranged at the end of the pressure relief pipe (3), the air hole (41) is connected to the inside of the pressure relief pipe (3); A sealing member (5) movably disposed in the pressure relief pipe (3); When the pressure exerted by the fluid in the fluid channel (13) on the sealing member (5) is greater than the weight of the sealing member (5), the sealing member (5) will be pushed by the fluid and block the air hole (41).

2. The anti-siphon water pipe joint according to claim 1, characterized in that: A through hole (14) is formed on the side wall of the fluid channel (13); the through hole (14) is connected to the interior of the pressure relief pipe (3), and the sealing member (5) cannot pass through the through hole (14).

3. The anti-siphon water pipe joint according to claim 1, characterized in that: A gasket (51) is also provided inside the pressure relief pipe (3), and the gasket (51) is attached to the inner wall of the pressure relief pipe (3); The seal (5) abuts against the inner side of the gasket (51).

4. The anti-siphon water pipe joint according to claim 3, characterized in that: The gasket (51) may be made of hard plastic or soft rubber.

5. An anti-siphon water pipe joint according to any one of claims 1 to 4, characterized in that: The cap (4) is formed with a raised portion (42) protruding therefrom, and the air hole (41) passes through the raised portion (42); When the cover cap (4) is arranged at the end of the pressure relief pipe (3), the protrusion (42) can extend into the pressure relief pipe (3).

6. The anti-siphon water pipe joint according to claim 5, characterized in that: The cover cap (4) is provided with a handle (43).

7. The anti-siphon water pipe joint according to claim 5, characterized in that: The cover cap (4) is made of hard plastic or soft rubber.

8. The anti-siphon water pipe joint according to claim 1, characterized in that: The water inlet interface (6) can be sleeved on the outside of the water inlet end (11) of the joint body (1); A clamping hole (15) is formed on the side wall of the water inlet end (11), and a clamping portion (61) is formed on the inner side wall of the water inlet interface (6). The clamping portion (61) can be inserted into the clamping hole (15) and connect the water inlet interface (6) to one end of the joint body (1).

9. The anti-siphon water pipe joint according to claim 8, characterized in that: The clamping portion (61) is formed with a contact portion (62) protruding therefrom; A sealing ring (8) is also provided inside the water inlet end (11); When the water inlet interface (6) is connected to one end of the joint body (1), the abutment portion (62) can pass through the clamping hole (15) and extend into the fluid channel (13), so that the sealing ring (8) can abut against the abutment portion (62).

10. The anti-siphon water pipe joint according to claim 1, characterized in that: The water outlet interface (7) is screwed onto the water outlet end (12) of the joint body (1); A serration portion (71) is formed on the inner side of the water outlet interface (7), and the serration portion (71) is used to cooperate with the water outlet end (12) to clamp the water outlet pipe.

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