Non-negative pressure water supply device

Abstract

The utility model discloses a non-negative pressure water supply device which comprises a bottom plate, a flow stabilizing tank and a water pipe are arranged on the bottom plate, a piston plate matched with the flow stabilizing tank in section shape and size is arranged in the flow stabilizing tank in a sealed and sliding mode, and at least one water outlet nozzle is arranged on the lower side of the piston plate. A piston plate is arranged in the flow stabilizing tank and divides the interior of the flow stabilizing tank into a pressure part and a water storage part, a water inlet pipe and a water outlet pipe are arranged on the water storage part in a communicating mode, the piston plate is communicated with the water inlet pipe, the water inlet pipe and the water outlet pipe are both communicated with a water pipe, the water inlet pipe is provided with a first electromagnetic valve, and the water outlet pipe is provided with a second electromagnetic valve. A third electromagnetic valve is arranged on the water pipe and located between an inlet of the water inlet pipe and an outlet of the water outlet pipe. The flow stabilizing tank has the beneficial effects that the problem of water safety caused by pollution of water in the flow stabilizing tank after long-time placement can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply, in particular to a non-negative pressure water supply device. Background Art

[0002] The concept of non-negative pressure water supply has been introduced into China for more than 20 years since the early 1990s. During the development process of more than 20 years, a wide variety of non-negative pressure equipment (also known as superimposed equipment) has emerged, with hundreds of manufacturers.

[0003] The non-negative pressure water supply is achieved by setting up a stabilizing tank. When the water pressure is too high, the stabilizing tank stabilizes the water flow, and the excess water is stored in the stabilizing tank. When the water pressure is too low, the water in the stabilizing tank is added to the water pipe for pressurization to maintain a stable water pressure. However, there is a defect in the prior art. The water pressure is in a stable state most of the time. Then, the water in the stabilizing tank may be left for a long time. After being left for a long time, the water in the stabilizing tank is easily contaminated because it is in a dead water state.

[0004] Therefore, it is necessary to propose a non-negative pressure water supply device, which can avoid the water in the stagnation tank from being contaminated when placed for a long time, causing water safety problems. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and to provide a non-negative pressure water supply device, which can prevent the water in the stagnation tank from being polluted when left for a long time, thus preventing the water safety problem.

[0006] The purpose of the utility model is achieved through the following technical scheme: a non-negative pressure water supply device, including a bottom plate, on which a turbulence tank and a water pipe are arranged, a piston plate matching the cross-sectional shape and size of the turbulence tank is sealingly and slidingly arranged inside the turbulence tank, at least one water outlet nozzle is arranged on the lower side of the piston plate, the piston plate divides the interior of the turbulence tank into a pressure part and a water storage part, a water inlet pipe and a water outlet pipe are connected to the water storage part, the piston plate is connected to the water inlet pipe, the water inlet pipe and the water outlet pipe are both connected to the water pipe, the water inlet pipe is provided with a first solenoid valve, the water outlet pipe is provided with a second solenoid valve, the water pipe is provided with a third solenoid valve, and the third solenoid valve is located between the inlet of the water inlet pipe and the outlet of the water outlet pipe.

[0007] The swirl pot is provided with a water inlet connected to the water inlet pipe and a water outlet connected to the water outlet pipe. The water inlet is connected to the piston plate through a flexible hose.

[0008] The simmer tank is provided with a booster pump and a negative pressure suppressor which are communicated with the pressure part.

[0009] The water outlet is located at one end of the water storage portion away from the piston plate.

[0010] The simmering tank is provided with a first pressure gauge.

[0011] A second pressure gauge is arranged on the water pipe.

[0012] The water storage part is connected with a spare pipe, the spare pipe is connected with the water pipe, and a fourth electromagnetic valve is arranged on the spare pipe.

[0013] The beneficial effect of the utility model is that when the storage part in the stabilizing tank stores water and the water pressure in the water pipe is stable, the third solenoid valve is closed, the first solenoid valve and the second solenoid valve are opened, and the third solenoid valve is closed, the water flow in the water pipe will first enter the upper part of the water storage part, and the water flow in the stabilizing tank will be sent out, so that the water in the stabilizing tank is always changed and in a running water state, thereby avoiding the water in the stabilizing tank from being contaminated when left for a long time, causing water safety problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the utility model;

[0015] Figure 2 This is a schematic diagram of the interior of the stagnation tank;

[0016] Figure 3 It is a schematic diagram of the connection of multi-layer stepped connecting parts;

[0017] Figure 4 for Figure 3 A magnified image;

[0018] In the figure, 1-bottom plate, 2-stable flow tank, 21-piston plate, 22-water outlet nozzle, 23-pressure part, 24-water storage part, 25-water inlet, 26-water outlet, 27-hose, 28-spare port, 29-connecting part, 210-positioning port, 3-water pipe, 31-third solenoid valve, 32-second pressure gauge, 4-water inlet pipe, 41-first solenoid valve, 5-water outlet pipe, 51-second solenoid valve, 6-boosting pump, 7-negative pressure suppressor, 8-first pressure gauge, 9-spare pipe, 91-fourth solenoid valve, 10-multi-layer stepped connecting part, 101-annular groove, 102-rubber part, 103-wedge block, 104 telescopic rod, 105-reset spring. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0020] It is to be noted that the concepts of directions “left”, “right”, “up”, “down”, “front”, “back”, “inside” and “outside” in the following schemes are all relative directions and will not be listed one by one here.

[0021] A non-negative pressure water supply device, reference Figure 1 , including a bottom plate 1. A water pipe 3 is arranged on the bottom plate 1. Water in the water pipe 3 flows from left to right. A third electromagnetic valve 31 is arranged on the water pipe 3. A second pressure gauge 32 for detecting the pressure of the water pipe 3 is arranged on the water pipe 3.

[0022] The simmering tank 2 is suspended on the bottom plate 1 by a hollow bracket. Figure 2 A piston plate 21 matching its cross section is provided in the swirl pot 2 in a sealed and sliding manner up and down. The piston plate 21 divides the interior of the swirl pot 2 into a pressure portion 23 and a water storage portion 24. The pressure portion 23 is located directly above the water storage portion 24. A water inlet 25, a water outlet 26 and a spare port 28 are provided on the swirl pot 2. The water outlet 26 and the spare port 28 are both located at the bottom of the swirl pot 2. The water inlet 25, the water outlet 26 and the spare port 28 are all connected to the water storage portion 24. A booster pump 6, a negative pressure suppressor 7 and a first pressure gauge 8 connected to the pressure portion 23 are provided on the upper side of the swirl pot 2.

[0023] The water inlet 25 is connected to the water inlet pipe 4, the inlet of the water inlet pipe 4 is connected to the water pipe 3, and the first solenoid valve 41 is provided on the water inlet pipe. The standby port 28 is connected to the standby pipe 9, the other end of the standby pipe 9 is connected to the water pipe 3, and the standby pipe 9 is provided with a fourth solenoid valve 91. The water outlet 26 is connected to the water outlet pipe 5, the outlet of the water outlet pipe 5 is connected to the water pipe 4, and the second solenoid valve 51 is provided on the water outlet pipe 5. The first solenoid valve 41 and the second solenoid valve 51 are both one-way solenoid valves. The inlet of the water inlet pipe 4 is located on the left side of the third solenoid valve 3, and the outlet of the water outlet pipe 5 is located on the right side of the third solenoid valve 3.

[0024] A plurality of water outlet nozzles 22 are arranged on the lower side of the piston plate 21. The hollow interior of the piston plate 21 is communicated with the water outlet nozzles 22. The interior of the piston plate 21 is communicated with the water inlet 25 through a hose 27. The hose 27 is foldable.

[0025] When the pressure in the water pipe 3 is too high, the first solenoid valve 41 and the third solenoid valve 31 are opened, and the second solenoid valve 51 is closed, and part of the water flow in the water pipe 3 enters the water storage part 24, thereby realizing diversion and pressure relief. Under the action of the water flow, the piston plate 21 moves upward, the volume of the pressure part 23 is reduced, and the negative pressure suppressor 7 works to discharge the excess gas in the pressure part 23. When the water inlet pipe 4 cannot meet the pressure relief and diversion requirements, the fourth solenoid valve 91 is opened, and the spare pipe 9 plays an auxiliary role in pressure relief and diversion.

[0026] When the pressure in the water pipe 3 is too low, the first solenoid valve 41 is closed, the second solenoid valve 51 and the third solenoid valve 31 are opened, the booster pump 6 is started, the piston plate 21 moves downward, and the water stored in the swirl tank 2 is sent to the water pipe 3 for compensation, thereby ensuring that the water pressure in the water pipe 3 is normal. When the water outlet pipe 5 cannot meet the compensation requirements of the water pipe 3, the fourth solenoid valve 91 is opened, and the spare pipe 9 plays a role in compensation.

[0027] When the water pressure in the water pipe 3 is normal, the first solenoid valve 41 and the second solenoid valve 51 are opened, and the third solenoid valve 31 is closed. The water in the water pipe 3 is first sprayed out from the water spray nozzle 22 and enters the water storage part 24. The newly entered water squeezes the water originally stored in the water storage part 24 from the water outlet pipe 5 into the water pipe 3. Thus, the water in the swirl tank 2 is always in a live water flow state.

[0028] As a further improvement of the present invention, it can be further extended based on the above cases to provide a variety of new embodiments.

[0029] As a second embodiment of the present invention, based on Embodiment 1, Figure 3 and Figure 4 , a plurality of multi-layered stepped connecting parts 10 are provided on the piston plate 21. The water outlet nozzle 22 is installed on the multi-layered stepped connecting part 10. The multi-layered stepped connecting part 10 is composed of a plurality of annular steps connected in sequence. Each annular step is provided with an annular groove 101. The inner wall of the annular groove 101 is provided with a rubber piece 102. The lower end of the water outlet nozzle 22 is provided with a connecting part 29 installed on the annular groove 101. The outer wall of the water outlet nozzle 102 is evenly provided with a plurality of snap-in openings 210 in an annular shape. The annular step is provided with a telescopic rod 104 that matches the number and position of the snap-in openings 210. The end of the telescopic rod 104 is provided with a wedge block 103 that matches the snap-in opening 210. A return spring 105 is sleeved on the telescopic rod 104.

[0030] Since the water outlet nozzle 22 has various calibers, a multi-layer stepped connecting portion 10 is designed to realize the installation of water outlet nozzles 22 of different calibers. When installing the water outlet nozzle 22, it is only necessary to insert the water outlet nozzle 22 into the annular groove 101 of the corresponding size. The rubber part 102 on the annular groove 101 and the connecting portion 29 are squeezed and matched with each other, thereby achieving a seal at the contact point between the two. During the insertion of the water outlet nozzle 22, the wedge block 103 is squeezed, but it does not hinder the installation of the water outlet nozzle 22. When the water outlet nozzle 22 is installed, the locking port 210 is aligned with the wedge block 103, and under the action of the reset spring 105, the wedge block 103 is locked into the locking port 210, so that the water outlet nozzle 22 is fixed on the multi-layer stepped connecting portion 10 and cannot be separated.

[0031] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above description or the technology or knowledge in the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A non-negative pressure water supply device, comprising a bottom plate (1), on which a swirl tank (2) and a water pipe (3) are arranged, characterized in that: A piston plate (21) having a cross-sectional shape and size matching that of the simmering pot (2) is provided in a sealing and sliding manner inside the simmering pot (2), at least one water outlet nozzle (22) is provided on one side of the piston plate (21), the piston plate (21) divides the interior of the simmering pot into a pressure portion (23) and a water storage portion (24), the water outlet nozzle (22) is located in the water storage portion (24), a water inlet pipe (4) and a water outlet pipe (5) are provided in communication on the water storage portion (24), the piston plate (21) is in communication with the water inlet pipe (4), the water inlet pipe (4) and the water outlet pipe (5) are both in communication with the water pipe (3), the water inlet pipe (4) is provided with a first solenoid valve (41), the water outlet pipe (5) is provided with a second solenoid valve (51), the water pipe (3) is provided with a third solenoid valve (31), and the third solenoid valve (31) is located between the inlet of the water inlet pipe (4) and the outlet of the water outlet pipe (5).

2. A non-negative pressure water supply device according to claim 1, characterized in that: The swirl pot (2) is provided with a water inlet (25) connected to the water inlet pipe (4) and a water outlet (26) connected to the water outlet pipe (5); the water inlet (25) is connected to the piston plate (21) via a flexible hose (27).

3. The non-negative pressure water supply device according to claim 1, characterized in that: The simmering tank (2) is provided with a booster pump (6) and a negative pressure suppressor (7) which are connected to the pressure part.

4. The non-negative pressure water supply device according to claim 2, characterized in that: The water outlet (26) is located at an end of the water storage portion (24) away from the piston plate (21).

5. The non-negative pressure water supply device according to claim 1, characterized in that: The simmering tank (2) is provided with a first pressure gauge (8).

6. The non-negative pressure water supply device according to claim 1, characterized in that: The water pipe (3) is provided with a second pressure gauge (32).

7. The non-negative pressure water supply device according to claim 1, characterized in that: The water storage portion (24) is connected to a spare pipe (9), the spare pipe (9) is connected to the water pipe (3), and a fourth solenoid valve (91) is provided on the spare pipe (9).

8. The non-negative pressure water supply device according to claim 1, characterized in that: The piston plate (21) is provided with a multi-layer stepped connection portion (10) matching the number and position of the water outlet nozzles (22); the radius of the multi-layer stepped connection portion (10) at one end away from the piston plate (21) is larger than the radius of the end close to the piston plate (21); the multi-layer stepped connection portion (10) is composed of a plurality of annular steps connected in sequence; an annular groove (101) is provided on the annular step; a connection portion (29) matching the annular groove (101) is provided at the lower end of the water outlet nozzle (22); a plurality of locking openings (210) are evenly and annularly provided on the water outlet nozzle (22); a telescopic rod (104) is provided on the annular step; a wedge block (103) matching the position and shape of the locking opening (210) is provided at the end of the telescopic rod (104); a return spring (105) is sleeved on the telescopic rod (104); and a rubber piece (102) is provided on the annular groove (101).

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