Anti-interference water inlet system of water tank

Abstract

The utility model discloses an anti-interference water inlet system of a water tank, which comprises the water tank, a water inlet pipe communicated into the water tank, a liquid level control valve arranged on the water inlet pipe and connected with a floating ball valve through a connecting piece, and a standard water level line arranged in the water tank, when the water level is lower than the standard water level line, the floating ball valve drives the liquid level control valve to open, and when the water level reaches or is higher than the standard water level line, the floating ball valve drives the liquid level control valve to close. The floating ball valve drives the liquid level control valve to be closed; the orifice of the water inlet pipe is lower than a standard water line; one end of the backflow prevention pipe is communicated with the water inlet pipe, and the other end of the backflow prevention pipe is an air inlet end higher than a standard water level. The pipe orifice of the water inlet pipe is arranged to be lower than the standard water level line, so that large fluctuation cannot be caused during water injection; when the water level reaches or is higher than the standard water level, the ball float valve drives the liquid level control valve to be closed, negative pressure is generated near the liquid level control valve, and due to the fact that the backflow-preventing pipe is arranged, air enters the water inlet pipe from the backflow-preventing pipe to damage the negative pressure, liquid in the water tank is prevented from flowing back, and it is guaranteed that the liquid level control valve is not prone to being opened and closed frequently.

Description

Technical Field

[0001] The utility model relates to the field of water tank inlet systems for high-rise buildings, in particular to an interference-proof water tank inlet system. Background Art

[0002] In today's rapidly developing urban environment, building space is becoming increasingly valuable, leading to the increasing construction of high-rise buildings. Given that municipal water supply systems typically only provide water pressure of approximately 14 meters, buildings two stories and above often require additional pressure-boosting facilities to ensure water supply. Currently, combined water tank and pump systems have become the mainstream choice for pressurized water supply. However, with the widespread adoption of this system, some challenges have also emerged, particularly the increasing problem of vibration in the water tank inlet pipe.

[0003] The current water tank water inlet control mostly relies on mechanical float valves, such as Figure 1 As shown, the pipe mouth 160 of the water inlet pipe in the water tank 100 is located above the standard water level line 170, and the float valve 120 automatically adjusts the opening and closing of the liquid level control valve 140 according to the change of the water level in the water tank 100: when the water level is lower than the standard water level line, the liquid level control valve 140 opens to let water in; when the water level reaches or exceeds the standard, the liquid level control valve 140 closes, thereby ensuring that the water storage amount in the water tank 100 is relatively stable.

[0004] However, when water is injected into the water inlet pipe of the water tank 100, the fluctuation of the water surface will cause the water level in the water tank 100 to be unstable, which will in turn cause the float valve 120 to operate frequently, triggering the continuous switching of the liquid level control valve 140, and may eventually cause water hammer phenomenon, causing the water flow to generate impact pressure in the pipe, which will not only be accompanied by noise and interfere with the living environment, but may also cause damage to the pipe in the long run, affecting the normal water supply to residents. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the present invention aims to provide an anti-interference water tank water inlet system to solve the problem that the water tank system in the existing technology is prone to water hammer, causing noise nuisance and even damage to pipes. The specific technical solution is as follows:

[0006] An anti-interference water tank water inlet system includes a water tank, a water inlet pipe is introduced into the water tank to fill the water tank, a liquid level control valve is provided on the water inlet pipe, and the liquid level control valve is connected to a float valve via a connector. A standard water level line is provided in the water tank. When the water level in the water tank is lower than the standard water level line, the float valve drives the liquid level control valve to open. When the water level in the water tank reaches or exceeds the standard water level line, the float valve drives the liquid level control valve to close. The system is characterized by:

[0007] The outlet of the water inlet pipe is lower than the standard water level;

[0008] An anti-backflow pipe is also provided in the water tank, one end of the anti-backflow pipe is connected to the water inlet pipe, and the other end is an air inlet end, which is higher than the standard water level line.

[0009] As a preferred embodiment: the height of the pipe mouth is 150-250 mm lower than the standard water level line.

[0010] As a preferred embodiment: the height of the pipe mouth is 200 mm lower than the standard water level line.

[0011] As a preferred embodiment: the water inlet pipe includes an external water inlet pipe and an internal water inlet pipe that are interconnected, the external water inlet pipe is located outside the water tank, the internal water inlet pipe is located inside the water tank, and the pipe mouth is located at the end of the internal water inlet pipe.

[0012] As a preferred implementation manner: the inner diameter of the backflow prevention pipe is smaller than the inner diameter of the inner water inlet pipe.

[0013] As a preferred implementation manner: the distance between the air inlet end and the standard water level line is not less than the inner diameter of the inner water inlet pipe.

[0014] As a preferred embodiment: an anti-backflow pipe elbow is provided at the air inlet end, and the outlet of the anti-backflow pipe elbow is arranged downward.

[0015] As a preferred embodiment: the backflow prevention pipe is connected to the water inlet pipe through a three-way joint.

[0016] As a preferred embodiment: a maintenance hole is opened on the top of the water tank.

[0017] As a preferred embodiment: the float valve and the air inlet end of the anti-backflow pipe are respectively located on both sides of the water tank.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model sets the mouth of the water inlet pipe below the standard water level line. When the water level is below the standard water level line, the water inlet pipe will not cause large fluctuations in the water level when filling the water tank with water; when the water level reaches or exceeds the standard water level line, the float valve drives the liquid level control valve to close. At this time, negative pressure is generated near the liquid level control valve, and the water in the water tank tends to flow back. However, since the anti-backflow pipe is set at the same time, air enters the water inlet pipe from the anti-backflow pipe, destroying the negative pressure near the liquid level control valve and preventing the liquid in the water tank from flowing back, thereby ensuring that the water level in the water tank is relatively stable, and the liquid level control valve is not easy to be opened and closed frequently, avoiding the water hammer phenomenon that causes noise disturbance and damages the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of a water tank water inlet system in the prior art;

[0021] Figure 2 It is a structural diagram of the anti-interference water tank water inlet system disclosed by the utility model.

[0022] In the figure, 100, water tank; 110, backflow prevention pipe; 120, float valve; 130, external water inlet pipe; 140, liquid level control valve; 150, connector; 160, pipe mouth; 170, standard water level line; 180, tee joint; 190, internal water inlet pipe; 200, return pipe elbow; 210, maintenance hole. DETAILED DESCRIPTION

[0023] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0024] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0025] Example 1

[0026] like Figure 2 As shown, an anti-interference water tank water inlet system includes a water tank 100. A maintenance hole 210 is opened at the top of the water tank 100 to facilitate maintenance personnel to enter and repair the equipment inside the water tank 100. The water tank 100 is connected to a water inlet pipe, which includes an external water inlet pipe 130 and an internal water inlet pipe 190. The external water inlet pipe 130 and the internal water inlet pipe 190 are interconnected. The external water inlet pipe 130 is located outside the water tank 100, and the internal water inlet pipe 190 is located inside the water tank 100. The end of the internal water inlet pipe 190 is a nozzle 160. A standard water level line 170 is set inside the water tank 100. The nozzle 160 is located below the standard water level line 170. The distance between the nozzle 160 and the standard water level line 170 is 150-250 mm, preferably 200 mm.

[0027] A liquid level control valve 140 is provided on the water inlet pipe, and the liquid level control valve 140 is connected to the float valve 120 through a connector 150. The float valve 120 is mechanical. When the water level in the water tank 100 is lower than the standard water level line 170, the float valve 120 drives the liquid level control valve 140 to open; when the water level in the water tank 100 reaches or exceeds the standard water level line 170, the float valve 120 drives the liquid level control valve 140 to close.

[0028] A three-way connecting pipe 180 is provided on the inner water inlet pipe 190 for connecting to the anti-backflow pipe 110. The inner pipe diameter of the anti-backflow pipe 110 is two levels smaller than that of the inner water inlet pipe 190, specifically 10-20 mm smaller. One end of the anti-backflow pipe 110 is connected to the inner water inlet pipe 190 through the three-way connecting pipe 180, and the other end is the air inlet end, which is located above the standard water level line 170. According to the "Building Water Supply and Drainage Design Standard", the air gap between the lowest point of the water inlet pipe mouth and the overflow edge should not be less than the diameter of the inner water inlet pipe, and not less than 25 mm. Specifically, the distance between the air inlet end and the standard water level line 170 is not less than the inner pipe diameter of the inner water inlet pipe 190. The anti-backflow pipe 110 is preferably arranged horizontally, and the air inlet end and the float valve 120 are respectively arranged on both sides of the water tank 100.

[0029] Since the air inlet end of the anti-backflow pipe 110 is at a high height and the diameter of the anti-backflow pipe 110 is also narrow, when the liquid level control valve 140 is opened, the resistance encountered when the water is diverted to the anti-backflow pipe 110 is much greater than that encountered by the internal water inlet pipe 190. Therefore, even when the water pressure is high, the amount of water diverted to the anti-backflow pipe is very small. Moreover, since the air inlet end and the float valve 120 are respectively arranged on both sides of the water tank 100 and are far apart, it is difficult for the water flowing out of the air inlet end to affect the rise and fall of the float valve 120 after flowing into the water tank 110.

[0030] In some preferred embodiments, the air inlet end of the anti-backflow pipe 110 is also provided with an anti-backflow pipe elbow 200, and the outlet of the anti-backflow pipe elbow 200 is set downward, which can prevent the water in the anti-backflow pipe 110 from directly rushing out and impacting the wall of the water tank 100 to generate noise when the pressure is too high.

[0031] The specific working principle is:

[0032] When the municipal water pressure is high and the water level in the water tank 100 is lower than the standard water level line 170, the float valve 120 drives the liquid level control valve 140 to open through the connector 150, and the water inlet pipe flows into the water tank 100 through the nozzle 160. Since the nozzle 160 is below the standard water level line 170, the water replenishment will not cause large water surface fluctuations. Due to the high water pressure, part of the water flows into the pool through the return pipe elbow 200. Since the return pipe elbow 200 is high, the water level in the water tank 100 is 100%. The backflow prevention pipe 110 has a relatively high diameter, and the inner diameter of the inner water inlet pipe 190 is two steps smaller. This results in the water flow resistance of the backflow prevention pipe 110 being much greater than that of the inner water inlet pipe 190. Therefore, the amount of water entering the pool through the backflow pipe elbow 200 is relatively small. The backflow pipe elbow 200 and the float valve 120 are located on opposite sides of the water tank 100 and are relatively far apart. Therefore, the fluctuations caused by the water entering the pool through the backflow pipe elbow 200 have little impact on the float valve 120. Therefore, when the water pressure in the water inlet pipe is high, the water replenishment to the water tank 100 through this water inlet system will not interfere with the float valve 120, and the liquid level control valve 140 can start and stop normally.

[0033] When the municipal water pressure is low and the water level in the water tank 100 is lower than 170°, the float valve 120 drives the liquid level control valve 140 to open via the connector 150, and the water inlet pipe fills the water tank 100 through the nozzle 160. Since the nozzle 160 is replenishing water below the normal water level and below the standard water level 170°, this replenishment does not cause significant water surface fluctuations. Furthermore, the backflow prevention pipe 110 is two steps smaller than the inner diameter of the inner water inlet pipe 190, and the amount of water entering the pool through the backflow pipe elbow 200 is almost zero. Therefore, when the water pressure in the water inlet pipe is low, replenishing the water tank 100 through this water inlet system will not interfere with the float valve 120, and the start and stop of the liquid level control valve 140 are normal.

[0034] When water tank 100 continues to replenish and the water level within tank 100 reaches or exceeds standard water level line 170, float valve 120 drives liquid level control valve 140 to close via connector 150. After liquid level control valve 140 closes, water stops flowing into tank 100. At this point, negative pressure is generated near liquid level control valve 140 (negative pressure can also be generated when municipal water pressure suddenly drops). However, due to the backflow prevention pipe 110, air can enter inner water inlet pipe 190 via backflow prevention pipe 110 from backflow pipe elbow 200, eliminating the negative pressure within inner water inlet pipe 190. Water in the pool will not flow back into outer water inlet pipe 130 through inner water inlet pipe 190, ensuring a relatively stable water level within tank 100 and preventing frequent starts and stops of liquid level control valve 140.

[0035] Therefore, due to the provision of the anti-backflow pipe 110, the utility model can set the pipe mouth 160 of the internal water inlet pipe 190 below the standard water level line 170, ensuring that the water level in the water tank 100 is relatively stable when replenishing water, and the liquid level control valve 140 will not be frequently started and stopped, thereby preventing the occurrence of water hammer phenomenon, eliminating the noise in the water tank 100, and extending the service life of the water tank system.

[0036] In the description of the present invention, it should be understood that the terms "middle", "length", "upper", "lower", "front", "back", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the present invention, unless otherwise expressly specified or limited, a first feature "on" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. "Multiple" means at least two, such as two or three, unless otherwise expressly specified or limited.

[0038] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] The above is only for explaining the implementation mode of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention without creative work should be included in the scope of protection of the present invention.

Claims

1. An anti-interference water tank water inlet system, comprising a water tank (100), a water inlet pipe passing through the water tank (100) to fill water into the water tank (100), a liquid level control valve (140) being provided on the water inlet pipe, the liquid level control valve (140) being connected to a float valve (120) via a connector (150), a standard water level line (170) being provided in the water tank (100), when the water level in the water tank (100) is lower than the standard water level line (170), the float valve (120) drives the liquid level control valve (140) to open, and when the water level in the water tank (100) reaches or exceeds the standard water level line (170), the float valve (120) drives the liquid level control valve (140) to close, characterized in that: The pipe opening (160) of the water inlet pipe is lower than the standard water level (170); A backflow prevention pipe (110) is further provided in the water tank (100), one end of the backflow prevention pipe (110) is connected to the water inlet pipe, and the other end is an air inlet end, which is higher than the standard water level line (170).

2. The anti-interference water tank water inlet system according to claim 1, characterized in that: The height of the nozzle (160) is 150-250 mm lower than the standard water level (170).

3. The anti-interference water tank water inlet system according to claim 2, characterized in that: The height of the pipe mouth (160) is 200 mm lower than the standard water level line (170).

4. The anti-interference water tank water inlet system according to claim 1, characterized in that: The water inlet pipe comprises an outer water inlet pipe (130) and an inner water inlet pipe (190) which are interconnected. The outer water inlet pipe (130) is located outside the water tank (100), and the inner water inlet pipe (190) is located inside the water tank (100). The pipe opening (160) is located at the end of the inner water inlet pipe (190).

5. The anti-interference water tank water inlet system according to claim 4, characterized in that: The inner diameter of the backflow prevention pipe (110) is smaller than the inner diameter of the inner water inlet pipe (190).

6. The anti-interference water tank water inlet system according to claim 4, characterized in that: The distance between the air inlet end and the standard water level line (170) is not less than the inner diameter of the inner water inlet pipe (190).

7. The anti-interference water tank water inlet system according to claim 1, characterized in that: An anti-backflow pipe elbow (200) is provided at the air inlet end, and the outlet of the anti-backflow pipe elbow (200) is arranged downward.

8. The anti-interference water tank water inlet system according to claim 1, characterized in that: The backflow prevention pipe (110) is connected to the water inlet pipe via a three-way joint (180).

9. The anti-interference water tank water inlet system according to claim 1, characterized in that: A maintenance hole (210) is provided on the top of the water tank (100).

10. The anti-interference water tank water inlet system according to any one of claims 1 to 9, characterized in that: The float valve (120) and the air inlet end of the backflow prevention pipe (110) are respectively located on two sides of the water tank (100).

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