Non-negative pressure variable frequency water supply equipment

Abstract

The utility model relates to the field of water supply equipment, and discloses non-negative-pressure variable-frequency water supply equipment which comprises a bottom plate, a control cabinet, a flow stabilizing tank, a water pump unit, a water outlet pipe and a water supply main pipe, and the control cabinet, the flow stabilizing tank, the water pump unit, the water outlet pipe and the water supply main pipe are fixedly installed at the top of the bottom plate. A plurality of suction ends of the water pump unit are fixedly communicated with the water outlet pipe, a plurality of discharge ends of the water pump unit are fixedly communicated with the water supply main pipe, one side of the air pressure tank is fixedly communicated with an air outlet pipe, and a pressure stabilizing mechanism is arranged between the air pressure tank and the water supply main pipe. The pressure stabilizing mechanism is used for keeping water supply pressure in the water supply header pipe constant. The water supply system has the following advantages and effects that the water supply pressure in the water supply main pipe can be automatically kept stable, it is ensured that the water pressure conveyed from the water supply main pipe is stable when supplied to users, and the water supply effect is improved.

Description

Technical Field

[0001] The present application relates to the technical field of water supply equipment, and in particular to a non-negative pressure variable frequency water supply equipment. Background Art

[0002] The non-negative pressure variable frequency water supply equipment uses the municipal pipe network as the water source, making full use of the original pressure of the municipal pipe network to form a closed continuous relay booster water supply mode, with good energy-saving effect and no secondary pollution of water quality. It is the development and extension of variable frequency constant pressure water supply equipment. It directly superimposes water supply on the basis of the pressure of the municipal pipe network, saving energy, and also has many advantages such as fully enclosed, pollution-free, small footprint, quick installation, reliable operation, and convenient maintenance.

[0003] In the related art, the non-negative pressure variable frequency water supply equipment is usually composed of components such as a control cabinet, a flow stabilizer tank, a water pump unit, a water outlet pipe and a water supply main. Although the non-negative pressure variable frequency water supply equipment meets the basic requirements of non-negative pressure variable frequency water supply to public households, it is found in actual use that there are still at least the following shortcomings: when the water pressure inside the water supply main becomes low due to factors such as abnormal operation of the water pump unit, it is unable to automatically maintain the stability of the water supply pressure inside the water supply main, which will cause the water pressure transported from the water supply main to be unstable when supplied to users, reducing the water supply effect. Therefore, we propose a non-negative pressure variable frequency water supply equipment to solve the above problems. Utility Model Content

[0004] In order to solve the problem that when the water pressure inside the water supply main becomes low, the water supply pressure inside the water supply main cannot be automatically maintained stable, which will cause the water pressure delivered from the water supply main to be unstable when supplied to users, thereby reducing the water supply effect, the present application provides a negative pressure-free variable frequency water supply equipment.

[0005] The above-mentioned technical purpose of the present application is achieved through the following technical scheme: a non-negative pressure variable frequency water supply equipment, including a base plate and a control cabinet, a flow stabilizing tank, a water pump unit, a water outlet pipe and a water supply main pipe installed and fixed on the top of the base plate, an air pressure tank is arranged on the top of the water supply main pipe, a water inlet is fixedly connected to the top of the flow stabilizing tank, the water outlet pipe is fixedly connected to the water outlet of the flow stabilizing tank, multiple suction ends of the water pump unit are fixedly connected to the water outlet pipe, multiple discharge ends of the water pump unit are fixedly connected to the water supply main pipe, one side of the air pressure tank is fixedly connected to the air outlet pipe, and a pressure stabilizing mechanism is arranged between the air pressure tank and the water supply main pipe, and the pressure stabilizing mechanism is used to maintain the water supply pressure inside the water supply main pipe constant.

[0006] By adopting the above technical solution, the water inlet is used to transport municipal water to the flow stabilization tank, the water pump unit is used to transport water, and the pressure stabilizing mechanism is used to maintain the stable water supply pressure inside the water supply main, so that the water pressure transported from the water supply main is stable when supplied to users.

[0007] Optionally, the pressure stabilizing mechanism includes a pressure stabilizing cylinder, a piston, a spring, an L-shaped exhaust pipe and a connecting pipe. The pressure stabilizing cylinder is fixedly installed at one end of the air outlet pipe away from the air pressure tank, and the end of the air outlet pipe away from the air pressure tank extends into the pressure stabilizing cylinder. The piston is arranged in the pressure stabilizing cylinder, and the side wall of the piston is in sliding and sealing contact with the inner wall of the pressure stabilizing cylinder. The top of the spring is fixedly connected to the bottom of the piston, and the bottom end of the spring is fixedly connected to the bottom inner wall of the pressure stabilizing cylinder. The L-shaped exhaust pipe is fixedly connected to the outer side wall of the pressure stabilizing cylinder, and the piston is used to seal the horizontal end of the L-shaped exhaust pipe. The vertical end of the L-shaped exhaust pipe is fixedly connected to the water supply main. An L-shaped air duct is opened on the top of the piston, and the horizontal end of the L-shaped air duct is located directly above the horizontal end of the L-shaped exhaust pipe. The connecting pipe is fixedly connected to the bottom of the pressure stabilizing cylinder, and the bottom end of the connecting pipe is fixedly connected to the water supply main.

[0008] By adopting the above technical scheme, the water supply main pipe and the lower part of the pressure-stabilizing cylinder can be connected by using a connecting pipe, the horizontal end of the L-shaped exhaust pipe can be sealed by using a piston, and the interior of the pressure-stabilizing cylinder can be divided into two parts by using a piston, so that the space above the piston is connected to the internal space of the air pressure tank and has a certain air pressure value, and the space below the piston is connected to the interior of the water supply main pipe and has a certain water pressure value, and the piston can be controlled to automatically reset by the elastic force of the spring.

[0009] Optionally, the inner diameter of the L-shaped exhaust pipe is set to be the same as the aperture of the L-shaped air passage.

[0010] By adopting the above technical solution, it is ensured that the pressurized air passes smoothly through the L-shaped air passage and enters the L-shaped exhaust pipe.

[0011] Optionally, a limiting ring located above the piston is fixedly installed in the pressure stabilizing cylinder, and the limiting ring contacts the top of the piston.

[0012] By adopting the above technical solution, the upward movement stroke of the piston can be blocked and limited.

[0013] Optionally, a guide groove is provided at the bottom of the piston, a guide column is fixedly mounted on the inner wall of the bottom of the pressure stabilizing cylinder, and the top end of the guide column slides and extends into the guide groove.

[0014] By adopting the above technical solution, the movement direction of the piston is guided so that the piston can move smoothly in the vertical direction in the pressure stabilizing cylinder.

[0015] Optionally, a one-way valve is fixedly installed on the L-shaped exhaust pipe.

[0016] By adopting the above technical solution, it is ensured that the air flows in one direction in the L-shaped exhaust pipe without backflow.

[0017] Optionally, an annular groove is provided on the outer wall of the piston, a sealing ring is slidably installed in the annular groove, and the outer ring surface of the sealing ring is in sliding sealing contact with the inner wall of the pressure stabilizing cylinder.

[0018] By adopting the above technical solution, the sealing effect between the piston and the inner wall of the pressure-stabilizing cylinder is enhanced.

[0019] Optionally, a first pressure gauge is fixedly installed on the top of the air pressure tank, and a second pressure gauge is fixedly installed on the top of the water supply main.

[0020] By adopting the above technical solution, the first pressure gauge is used to display the air pressure inside the air pressure tank, and the second pressure gauge is used to display the water pressure inside the water supply main.

[0021] Optionally, an air supply pipe is fixedly connected to one side of the air pressure tank, and an air supply valve is fixedly installed on the air supply pipe.

[0022] By adopting the above technical solution, pressurized air is added into the air pressure tank to increase the air pressure value inside the air pressure tank.

[0023] Optionally, a seat is provided at the bottom of the air pressure tank, and the bottom of the seat is fixedly connected to the top of the water supply main.

[0024] By adopting the above technical solution, the reliability and stability of the connection between the air pressure tank and the water supply main are improved.

[0025] The present application includes at least one of the following beneficial technical effects:

[0026] The present application utilizes a pressure-stabilizing mechanism composed of a pressure-stabilizing cylinder, a piston, a spring, an L-shaped exhaust pipe and a connecting pipe to automatically maintain the stability of the water supply pressure inside the water supply main, ensure that the water pressure delivered from the water supply main is stable when supplied to users, and improve the water supply effect.

[0027] The present application can block and limit the upward movement of the piston by utilizing a limit ring. When the water pressure inside the water supply main is within the normal pressure range, the set pressure inside the air pressure tank is lower than the normal water pressure inside the water supply main, and thus the piston will not be pushed to move downward, and the piston will remain in a state of conflict with the limit ring.

[0028] The present application utilizes an air supply pipe and an air supply valve to facilitate air supply to the inside of the air pressure tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 2 is a schematic diagram of the main stereoscopic structure of this embodiment.

[0030] Figure 2 It is a left-view stereoscopic structural schematic diagram of this embodiment.

[0031] Figure 3 It is a schematic diagram of the main cross-sectional structure of the voltage stabilizing mechanism.

[0032] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of part A.

[0033] In the figure, 1. bottom plate; 2. control cabinet; 3. flow stabilizing tank; 4. water pump unit; 5. water outlet pipe; 6. water supply main; 7. air pressure tank; 8. water inlet; 9. air outlet pipe; 10. pressure stabilizing cylinder; 11. piston; 12. spring; 13. L-shaped exhaust pipe; 14. L-shaped air duct; 15. limit ring; 16. guide groove; 17. guide column; 18. one-way valve; 19. first pressure gauge; 20. second pressure gauge; 21. air supply pipe; 22. air supply valve; 23. sealing ring; 24. connecting pipe. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] The embodiment of the present application discloses a non-negative pressure variable frequency water supply equipment, including a base plate 1 and a control cabinet 2, a simmering tank 3, a water pump unit 4, a water outlet pipe 5 and a water supply main pipe 6 installed and fixed on the top of the base plate 1. The control cabinet 2 can supply power to the water pump unit 4. A pressure tank 7 is provided on the top of the water supply main pipe 6. A water inlet 8 is fixedly connected to the top of the simmering tank 3. The water inlet 8 is fixedly connected to the municipal water supply network pipe. The water outlet pipe 5 is fixedly connected to the water outlet of the simmering tank 3. The water pump unit 4 The multiple suction ends of the water pump unit 4 are fixedly connected to the water outlet pipe 5, and the multiple discharge ends of the water pump unit 4 are fixedly connected to the water supply main pipe 6. The water supply main pipe 6 is connected to the user's water pipe to supply water to the user's home. One side of the air pressure tank 7 is fixedly connected with an air outlet pipe 9. A pressure stabilizing mechanism is arranged between the air pressure tank 7 and the water supply main pipe 6. The pressure stabilizing mechanism is used to maintain the water supply pressure inside the water supply main pipe 6 constant. The pressure stabilizing mechanism includes a pressure stabilizing cylinder 10, a piston 11, a spring 12, an L-shaped exhaust pipe 13 and a connecting pipe 24. The pressure stabilizing cylinder 10 is fixedly installed at one end of the air outlet pipe 9 away from the air pressure tank 7, and the end of the air outlet pipe 9 away from the air pressure tank 7 extends into the pressure stabilizing cylinder 10. The piston 11 is arranged in the pressure stabilizing cylinder 10, and the side wall of the piston 11 is in sliding and sealing contact with the inner side wall of the pressure stabilizing cylinder 10. The top end of the spring 12 is fixedly connected to the bottom of the piston 11, and the bottom end of the spring 12 is fixedly connected to the bottom inner wall of the pressure stabilizing cylinder 10. The L-shaped exhaust pipe 13 is fixedly connected to the pressure stabilizing cylinder 1 0, the piston 11 is used to block the horizontal end of the L-shaped exhaust pipe 13, the vertical end of the L-shaped exhaust pipe 13 is fixedly connected to the water supply main pipe 6, a one-way valve 18 is fixedly installed on the L-shaped exhaust pipe 13, an L-shaped air passage 14 is opened on the top of the piston 11, the horizontal end of the L-shaped air passage 14 is located directly above the horizontal end of the L-shaped exhaust pipe 13, a connecting pipe 24 is fixedly connected to the bottom of the pressure stabilizing cylinder 10, and the bottom end of the connecting pipe 24 is fixedly connected to the water supply main pipe 6.

[0036] In this embodiment, the inner diameter of the L-shaped exhaust pipe 13 is set to be the same as the aperture of the L-shaped air passage 14 .

[0037] In this embodiment, a limiting ring 15 located above the piston 11 is fixedly installed in the pressure stabilizing cylinder 10 , and the limiting ring 15 abuts against the top of the piston 11 .

[0038] In this embodiment, a guide groove 16 is formed at the bottom of the piston 11 , and a guide column 17 is fixedly mounted on the inner wall of the bottom of the pressure stabilizing cylinder 10 , and the top end of the guide column 17 slidably extends into the guide groove 16 .

[0039] In this embodiment, an annular groove is formed on the outer wall of the piston 11 , and a sealing ring 23 is slidably installed in the annular groove. The outer ring surface of the sealing ring 23 is in sliding and sealing contact with the inner wall of the pressure stabilizing cylinder 10 .

[0040] In this embodiment, a first pressure gauge 19 is fixedly installed on the top of the air pressure tank 7 , and a second pressure gauge 20 is fixedly installed on the top of the water supply main pipe 6 .

[0041] In this embodiment, an air supply pipe 21 is fixedly connected to one side of the air pressure tank 7, an air supply valve 22 is fixedly installed on the air supply pipe 21, and the air supply pipe 21 is fixedly connected to the air outlet port of the external air booster.

[0042] In this embodiment, a cushion is provided at the bottom of the air pressure tank 7 , and the bottom of the cushion is fixedly connected to the top of the water supply main pipe 6 .

[0043] Through the above structure, the non-negative pressure variable frequency water supply equipment provided by the present application can automatically maintain the stability of the water supply pressure inside the water supply main 6 when in use, ensure that the water pressure delivered from the water supply main 6 is stable when supplied to users, and improve the water supply effect. When in specific use, the water of the municipal water supply network pipe flows into the stabilizing tank 3 through the water inlet 8. By controlling the operation of the water pump unit 4, the water in the stabilizing tank 3 can be delivered to the water supply main 6, and then delivered to the user's home through the water supply main 6, so that water can be supplied to the user. When the water pump unit 4 is running stably, the water pressure inside the water supply main 6 is within the normal pressure range. At this time, the water pressure in the water supply main 6 will apply a downward force to the piston 11 through the connecting pipe 24, so that the top of the piston 11 contacts the limit ring 15, and at this time, the air pressure inside the air pressure tank 7 applies a downward pressure to the piston 11 through the air outlet pipe 9. The set pressure inside the air pressure tank 7 is less than the normal water pressure inside the water supply main 6, and thus the piston 11 will not be pushed to move downward;

[0044] When the water pump unit 4 operates unstably and abnormally, causing the water pressure inside the water supply main pipe 6 to be lower than the normal pressure range, the pressure inside the air pressure tank 7 is higher than the water pressure inside the water supply main pipe 6, which in turn pushes the piston 11 to move vertically downward, and the spring 12 is gradually compressed. When the piston 11 moves down to the point where the L-shaped air passage 14 and the L-shaped exhaust pipe 13 are connected, the pressurized air inside the air pressure tank 7 passes through the air outlet pipe 9, the L-shaped air passage 14, and the L-shaped exhaust pipe 13 in sequence and enters the water supply main pipe 6, thereby pressurizing the water inside the water supply main pipe 6, thereby ensuring that the water pressure delivered from the water supply main pipe 6 is stable when supplied to users;

[0045] When the water pressure inside the water supply main pipe 6 returns to normal, the pressure inside the air pressure tank 7 returns to a state lower than the normal water pressure inside the water supply main pipe 6. Under the elastic force of the spring 12, the piston 11 can be controlled to automatically rise and reset to contact the bottom of the limit ring 15. At this time, the piston 11 blocks the horizontal port of the L-shaped exhaust pipe 13, and the pressurized air in the air pressure tank 7 will not enter the water supply main pipe 6.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A non-negative pressure variable frequency water supply equipment, characterized in that: The invention comprises a base plate (1), a control cabinet (2) fixedly mounted on the top of the base plate (1), a flow stabilizing tank (3), a water pump unit (4), a water outlet pipe (5) and a water supply main pipe (6), wherein a pressure tank (7) is arranged on the top of the water supply main pipe (6), a water inlet (8) is fixedly connected to the top of the flow stabilizing tank (3), the water outlet pipe (5) is fixedly connected to the water outlet of the flow stabilizing tank (3), multiple suction ends of the water pump unit (4) are fixedly connected to the water outlet pipe (5), multiple discharge ends of the water pump unit (4) are fixedly connected to the water supply main pipe (6), one side of the pressure tank (7) is fixedly connected to an air outlet pipe (9), and a pressure stabilizing mechanism is arranged between the pressure tank (7) and the water supply main pipe (6), the pressure stabilizing mechanism is used to maintain a constant water supply pressure inside the water supply main pipe (6).

2. The non-negative pressure variable frequency water supply equipment according to claim 1 is characterized in that: The pressure stabilizing mechanism comprises a pressure stabilizing cylinder (10), a piston (11), a spring (12), an L-shaped exhaust pipe (13) and a connecting pipe (24); the pressure stabilizing cylinder (10) is fixedly mounted on one end of the outlet pipe (9) away from the air pressure tank (7); the end of the outlet pipe (9) away from the air pressure tank (7) extends into the pressure stabilizing cylinder (10); the piston (11) is disposed in the pressure stabilizing cylinder (10); the side wall of the piston (11) is in sliding sealing contact with the inner side wall of the pressure stabilizing cylinder (10); the top end of the spring (12) is fixedly connected to the bottom end of the piston (11); the bottom end of the spring (12) is in contact with the pressure stabilizing cylinder (10); The piston (11) is used to seal the horizontal end of the L-shaped exhaust pipe (13); the vertical end of the L-shaped exhaust pipe (13) is fixedly connected to the water supply main pipe (6); an L-shaped air passage (14) is provided on the top of the piston (11); the horizontal end of the L-shaped air passage (14) is located directly above the horizontal end of the L-shaped exhaust pipe (13); the connecting pipe (24) is fixedly connected to the bottom of the pressure-stabilizing cylinder (10); and the bottom end of the connecting pipe (24) is fixedly connected to the water supply main pipe (6).

3. The non-negative pressure variable frequency water supply equipment according to claim 2 is characterized in that: The inner diameter of the L-shaped exhaust pipe (13) is set to be the same as the aperture of the L-shaped air passage (14).

4. The non-negative pressure variable frequency water supply equipment according to claim 2 is characterized in that: A limiting ring (15) located above the piston (11) is fixedly installed in the pressure stabilizing cylinder (10), and the limiting ring (15) abuts against the top of the piston (11).

5. The non-negative pressure variable frequency water supply equipment according to claim 2 is characterized in that: A guide groove (16) is formed at the bottom of the piston (11), and a guide column (17) is fixedly mounted on the inner wall of the bottom of the pressure stabilizing cylinder (10), with the top end of the guide column (17) slidably extending into the guide groove (16).

6. The non-negative pressure variable frequency water supply equipment according to claim 2 is characterized in that: A one-way valve (18) is fixedly mounted on the L-shaped exhaust pipe (13).

7. The non-negative pressure variable frequency water supply equipment according to claim 2 is characterized in that: An annular groove is formed on the outer wall of the piston (11), a sealing ring (23) is slidably mounted in the annular groove, and an outer ring surface of the sealing ring (23) is in sliding sealing contact with the inner wall of the pressure stabilizing cylinder (10).

8. The non-negative pressure variable frequency water supply equipment according to claim 1 is characterized in that: A first pressure gauge (19) is fixedly mounted on the top of the air pressure tank (7), and a second pressure gauge (20) is fixedly mounted on the top of the water supply main pipe (6).

9. The non-negative pressure variable frequency water supply equipment according to claim 1, characterized in that: An air supply pipe (21) is fixedly connected to one side of the air pressure tank (7), and an air supply valve (22) is fixedly mounted on the air supply pipe (21).

10. The non-negative pressure variable frequency water supply equipment according to claim 1, characterized in that: A cushion seat is provided at the bottom of the air pressure tank (7), and the bottom of the cushion seat is fixedly connected to the top of the water supply main pipe (6).

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