Vacuum negative pressure drainage system for rainwater and sewage confluence in old block

Abstract

The vacuum negative pressure drainage system comprises a vacuum collection box, a vacuum tank, a treatment tank and a control center, the water inlet end of the vacuum collection box is connected with a water inlet pipe, a water pumping pipe is arranged in the vacuum collection box, the water outlet end of the water pumping pipe is connected with the vacuum tank, and a water outlet pipe is arranged at the bottom of the vacuum tank; the water outlet end of the water outlet pipe is connected with the treatment tank, a blow-off pipe is arranged on the side face of the treatment tank, a blow-off pump is arranged on the blow-off pipe, and the control center controls normal operation of the vacuum negative pressure drainage system. According to the vacuum negative pressure drainage system for rainwater and sewage confluence in the old block, multiple filtering procedures and shearing procedures are added in the drainage treatment process, the probability of occurrence of blockage in the rainwater and sewage confluence drainage system can be effectively reduced, the service life is long, and the drainage system runs more efficiently and stably.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum negative pressure drainage systems, and in particular to a vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods. Background Art

[0002] The vacuum negative pressure drainage system uses vacuum negative pressure technology in the drainage pipe. Under the action of the vacuum pump station, negative pressure is generated inside the drainage pipe, and then a high-speed airflow with sewage is generated by the air pressure difference, and then the sewage is discharged. Some existing old urban areas are located in the center of the old city, with high urban construction density, concentrated population, lagging drainage pipe network construction standards, and tight underground space of urban roads. There is no condition for complete separation of rainwater and sewage, so the old urban areas still adopt the drainage system of combined rainwater and sewage. The drainage system of combined rainwater and sewage has uncertain sewage sources and contains many large impurities, which are easy to block the drainage pipes, thereby affecting the stability of the drainage system. Therefore, the present invention provides a vacuum negative pressure drainage system suitable for combined rainwater and sewage in old blocks, which uses vacuum negative pressure technology for drainage, does not affect the original gravity drainage in the building, and can also reduce the probability of blockage of the drainage system, making the operation of the drainage system more efficient and stable. Summary of the invention

[0003] The purpose of the present invention is to provide a vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods. By adding multiple filtering and shearing processes in the drainage treatment process, the probability of blockage in the combined rainwater and sewage drainage system can be effectively reduced, the service life is long, and the operation of the drainage system is more efficient and stable.

[0004] To achieve the above-mentioned purpose, the present invention provides a vacuum negative pressure drainage system for combined rainwater and sewage in old blocks, including a vacuum collecting box, a vacuum tank, a treatment tank and a control center, the water inlet end of the vacuum collecting box is connected to the water inlet pipe, a pumping pipe is arranged inside the vacuum collecting box, the water outlet end of the pumping pipe is connected to the vacuum tank, a water outlet pipe is arranged at the bottom of the vacuum tank, the water outlet end of the water outlet pipe is connected to the treatment tank, a sewage pipe is arranged on the side of the treatment tank, and a sewage pump is arranged on the sewage pipe, and the control center controls the normal operation of the vacuum negative pressure drainage system.

[0005] Furthermore, the water inlet pipe is provided with a solenoid valve and a water inlet pump for water intake.

[0006] Furthermore, a liquid level sensor for monitoring the liquid level and a metal mesh for filtering are arranged inside the vacuum collection box, a first air inlet pipe for air intake is arranged on the side of the vacuum collection box, and a water outlet of the water inlet pipe is arranged above the metal mesh.

[0007] Furthermore, the water pumping pipe is arranged at the bottom of the vacuum collection box, a water pumping assembly for facilitating water pumping is arranged at the lower end of the water pumping pipe, and a second solenoid valve is arranged on the water pumping pipe.

[0008] Furthermore, the pumping assembly includes a columnar pumping unit and a conical pumping unit, the area of ​​the upper bottom of the conical pumping unit is smaller than the area of ​​the lower bottom, the top of the columnar pumping unit is connected to the pumping pipe, and the bottom of the columnar pumping unit is connected to the upper bottom of the conical pumping unit, and a plurality of pumping holes for pumping water are arranged on the surface of the pumping assembly.

[0009] Furthermore, a liquid level sensor 2 for monitoring the liquid level is provided inside the vacuum tank, a shearing net for shearing is provided below the liquid level sensor 2, a vacuum pump is provided outside the vacuum tank, a solenoid valve 3 is provided between the vacuum pump and the vacuum tank, a liquid level observation window, a pressure gauge for detecting the air pressure and a second air inlet pipe are also provided outside the vacuum tank, and a solenoid valve 4 is provided on the second air inlet pipe.

[0010] Furthermore, the water outlet pipe is provided with a solenoid valve five, a drainage pump for drainage and a solenoid valve six.

[0011] Furthermore, a filtration area and a sedimentation area are arranged inside the treatment tank, the filtration area is arranged above the sedimentation area, and a filter screen 1, a filter screen 2 and a metal screen 2 are arranged in sequence from top to bottom inside the treatment tank.

[0012] Furthermore, the filter screen 1 and the filter screen 2 are arranged at an angle, a sewage outlet 1 is arranged above the filter screen 1, and a sewage outlet 2 is arranged above the filter screen 2. The metal mesh 2 is arranged horizontally, and a sewage pipe is arranged below the metal mesh 2. The sewage pipe is provided with an electromagnetic valve 7 and a sewage pump.

[0013] Furthermore, a liquid level sensor 3 for monitoring the liquid level is provided inside the processing tank.

[0014] The advantages and positive effects of the vacuum negative pressure drainage system for rainwater and sewage combined in old blocks described in the present invention are: The drainage system of the present invention is provided with a vacuum collection box, a vacuum tank and a treatment tank in sequence, and then uses vacuum negative pressure technology to draw sewage from the vacuum collection box into the vacuum tank, and then discharges it after preliminary treatment in the treatment tank. Multiple filtering processes and shearing processes are added during the drainage treatment process, and the vacuum negative pressure technology is used without changing the original gravity drainage in the building, which can not only effectively reduce the probability of blockage in the combined rainwater and sewage drainage system, extend the service life, but also make the drainage system more efficient and stable.

[0015] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a vacuum negative pressure drainage system for rainwater and sewage combined in old blocks according to the present invention; Figure 2 A schematic diagram of a vacuum collection box of an embodiment of a vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods according to the present invention; Figure 3 It is a schematic diagram of a pumping component of an embodiment of a vacuum negative pressure drainage system for combined rainwater and sewage in old blocks of the present invention; Figure 4 A schematic diagram of a vacuum tank of an embodiment of a vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods according to the present invention; Figure 5 A schematic diagram of a shear net of an embodiment of a vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods according to the present invention; Figure 6 This is a schematic diagram of a treatment tank in an embodiment of a vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods according to the present invention.

[0017] Reference numerals 1. Vacuum collection box; 2. Liquid level sensor 1; 3. Water inlet pipe; 4. Solenoid valve 1; 5. Water inlet pump; 6. Control center; 7. Solenoid valve 2; 8. First air inlet pipe; 9. Water pumping pipe; 10. Water pumping assembly; 11. Vacuum tank; 12. Vacuum pump; 13. Solenoid valve 3; 14. Liquid level observation window; 15. Liquid level sensor 2; 16. Second air inlet pipe; 17. Solenoid valve 4; 18. Pressure gauge; 19. Water outlet pipe; 20. Solenoid valve 5; 21 , drainage pump; 22, treatment tank; 23, solenoid valve six; 24, sewage outlet one; 25, third air inlet pipe; 26, sewage outlet two; 27, sewage pipe; 28, solenoid valve seven; 29, sewage pump; 30, metal mesh one; 31, columnar pumping unit; 32, pumping hole; 33, conical pumping unit; 34, shear net; 35, liquid level sensor three; 36, filtration area; 37, sedimentation area; 38, filter screen one; 39, filter screen two; 40, metal mesh two. DETAILED DESCRIPTION

[0018] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0019] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] Example like Figure 1 As shown, a vacuum negative pressure drainage system for rainwater and sewage confluence in old neighborhoods includes a vacuum collection box 1, a vacuum tank 11, a treatment tank 22 and a control center 6. The water inlet end of the vacuum collection box 1 is connected to the water inlet pipe 3, and a water pumping pipe 9 is arranged inside the vacuum collection box 1, and the water outlet end of the water pumping pipe 9 is connected to the vacuum tank 11. A water outlet pipe 19 is arranged at the bottom of the vacuum tank 11, and the water outlet end of the water outlet pipe 19 is connected to the treatment tank 22. A sewage pipe 27 is arranged on the side of the treatment tank 22, and a sewage pump 29 is arranged on the sewage pipe 27. The control center 6 controls the normal operation of the vacuum negative pressure drainage system.

[0021] The water inlet pipe 3 is provided with a solenoid valve 4 and a water inlet pump 5 for water inlet. When the water inlet pump 5 and the solenoid valve 4 are turned on, the sewage enters the vacuum collection box 1 through the water inlet pipe 3.

[0022] like Figure 2 As shown, the vacuum collection box 1 is provided with a liquid level sensor 2 for monitoring the liquid level and a metal mesh 30 for filtering. A first air intake pipe 8 for air intake is provided on the side of the vacuum collection box 1, and the first air intake pipe 8 is used to balance the atmospheric pressure. The water outlet of the water inlet pipe 3 is arranged above the metal mesh 30. When sewage passes through the metal mesh 30, impurities with larger volume will be filtered by the metal mesh 30, and the impurities are cleaned regularly through the inspection port on the top of the vacuum collection box 1.

[0023] like Figure 1 and Figure 3As shown, the pumping pipe 9 is arranged at the bottom of the vacuum collection box 1, and a pumping assembly 10 for pumping water is arranged at the lower end of the pumping pipe 9, and a solenoid valve 7 is arranged on the pumping pipe 9. The pumping assembly 10 includes a columnar pumping unit 31 and a conical pumping unit 33, the area of ​​the upper bottom of the conical pumping unit 33 is smaller than the area of ​​the lower bottom, the upper part of the columnar pumping unit 31 is connected to the pumping pipe 9, and the lower part of the columnar pumping unit 31 is connected to the upper bottom of the conical pumping unit 33, and a plurality of pumping holes 32 for pumping water are arranged on the surface of the pumping assembly 10. The pumping assembly 10 can increase the pumping area at the bottom of the pumping pipe 9, and when pumping water, the fluctuation amplitude of the sewage in the vacuum collection box 1 is reduced, so that the drainage system can operate more stably.

[0024] like Figure 4 As shown, the vacuum tank 11 is provided with a liquid level sensor 15 for monitoring the liquid level, and a shearing net 34 for shearing is provided below the liquid level sensor 15. The structure of the shearing net 34 is as follows: Figure 5 As shown. A vacuum pump 12 is provided outside the vacuum tank 11, and a solenoid valve 3 13 is provided between the vacuum pump 12 and the vacuum tank 11. The vacuum pump 12 evacuates the inside of the vacuum tank 11 to maintain the air pressure inside the vacuum tank 11 within the set negative pressure range (-0.03MPA to -0.06MPA). A liquid level observation window 14, a barometer 18 for detecting air pressure, and a second air intake pipe 16 are also provided outside the vacuum tank 11. A solenoid valve 4 17 is provided on the second air intake pipe 16. If the air pressure detected by the barometer 18 is greater than the set upper limit of air pressure, the vacuum pump 12 evacuates the vacuum tank 11. If the air pressure detected by the barometer 18 is less than the set lower limit of air pressure, the vacuum pump 12 stops evacuating the vacuum tank 11, thereby maintaining the negative pressure inside the vacuum tank 11.

[0025] The outlet pipe 19 is provided with a solenoid valve 5, a drainage pump 21 for drainage and a solenoid valve 6 23. When the sewage is discharged from the vacuum tank 11 through the outlet pipe 19, the sewage passes through the shearing net 34, and the impurities in the sewage are sheared, which is more conducive to the discharge of the sewage.

[0026] like Figure 6 As shown, the processing tank 22 is provided with a filtration area 36 and a sedimentation area 37, the filtration area 36 is provided above the sedimentation area 37, and the processing tank 22 is provided with a filter screen 1 38, a filter screen 2 39 and a metal screen 2 40 from top to bottom. The filter screen 1 38 and the filter screen 2 39 are arranged obliquely, a sewage outlet 1 24 is provided above the filter screen 1 38, a sewage outlet 26 is provided above the filter screen 2 39, the metal screen 2 40 is arranged horizontally, a sewage pipe 27 is provided below the metal screen 2 40, and a solenoid valve 7 28 and a sewage pump 29 are provided on the sewage pipe 27. The processing tank 22 is provided with a liquid level sensor 3 35 for monitoring the liquid level.

[0027] The sewage entering the treatment tank 22 is filtered by the filter screen 1 38 and the filter screen 2 39 to further remove impurities, wherein the gap of the filter screen 2 39 is smaller than the gap of the filter screen 1 38. Then the sewage enters the sedimentation area 37 through the metal mesh 2 40 for sedimentation to remove solid impurities such as soil and smaller gravel, and then the sewage is discharged through the sewage pipe 27 below the metal mesh 2 40, and the sewage pipe 27 can be connected to the treatment pipeline of the sewage treatment company.

[0028] In the present invention, the control center 6 controls the operation of the entire sewage system, wherein the liquid level sensor 1 2, the liquid level sensor 2 15, the liquid level sensor 3 35, the solenoid valve 1 4, the solenoid valve 2 7, the solenoid valve 3 13, the solenoid valve 4 17, the solenoid valve 5, the solenoid valve 6 23, the solenoid valve 7 28, the water inlet pump 5, the vacuum pump 12, the pressure gauge 18, the drainage pump 21, the sewage pump 29, etc. are all electrically connected to the control center 6, and the liquid level sensor, the solenoid valve and the pump components are all selected from the existing structures according to the needs.

[0029] The operation process is: open the solenoid valve 14 and the water inlet pump 5, the sewage enters the vacuum collection box 1 through the water inlet pipe 3, when the water level reaches the highest water level of the liquid level sensor 12, the solenoid valve 14 and the water inlet pump 5 are closed, the vacuum pump 12 evacuates the vacuum tank 11, so that the air pressure in the vacuum tank 11 is within the set range (monitored by the barometer 18 and adjusted by the solenoid valve 4 17 and the second air inlet pipe 16), open the solenoid valve 27, under the action of negative pressure, the water pump 9 draws the sewage into the vacuum tank 11, when the water level reaches the highest water level of the liquid level sensor 2 15, the solenoid valve 27 is closed, the solenoid valve 5 20, the drainage pump 21 and the solenoid valve 6 23 are opened, and the sewage is pumped into the treatment tank 22, when the water level reaches the highest water level of the liquid level sensor 3 35, the solenoid valve 5 20, the drainage pump 21 and the solenoid valve 6 23 are closed, and after the sewage enters the treatment tank 22, it is filtered and precipitated, and finally the solenoid valve 7 28 and the sewage pump 29 are opened, and the sewage is discharged through the sewage pipe 27; and so on. During operation, the control center 6 controls the smooth operation of the entire system.

[0030] Therefore, the present invention adopts the above-mentioned vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods, and adds multiple filtering and shearing processes in the drainage treatment process, which can effectively reduce the probability of blockage in the combined rainwater and sewage drainage system, prolong the service life, and make the drainage system run more efficiently and stably.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A vacuum negative pressure drainage system for rainwater and sewage confluence in old neighborhoods, characterized by: It includes a vacuum collection box, a vacuum tank, a treatment tank and a control center. The water inlet end of the vacuum collection box is connected to the water inlet pipe. A water pumping pipe is arranged inside the vacuum collection box. The water outlet end of the water pumping pipe is connected to the vacuum tank. A water outlet pipe is arranged at the bottom of the vacuum tank. The water outlet end of the water outlet pipe is connected to the treatment tank. A sewage pipe is arranged on the side of the treatment tank. A sewage pump is arranged on the sewage pipe. The control center controls the normal operation of the vacuum negative pressure drainage system. The processing tank is provided with a filtering area and a settling area, wherein the filtering area is arranged above the settling area, and a first filter screen, a second filter screen and a second metal screen are sequentially arranged in the processing tank from top to bottom.

2. A vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods according to claim 1, characterized in that: The water inlet pipe is provided with a solenoid valve 1 and a water inlet pump for water inlet.

3. The vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods according to claim 1 is characterized by: The interior of the vacuum collection box is provided with a liquid level sensor for monitoring the liquid level and a metal mesh for filtering, the side of the vacuum collection box is provided with a first air inlet pipe for air intake, and the water outlet of the water inlet pipe is provided above the metal mesh.

4. The vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods according to claim 1 is characterized by: The water pumping pipe is arranged at the bottom of the vacuum collecting box, the lower end of the water pumping pipe is provided with a water pumping assembly for facilitating water pumping, and the water pumping pipe is provided with a second electromagnetic valve.

5. The vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods according to claim 4 is characterized by: The pumping assembly includes a columnar pumping unit and a conical pumping unit. The area of ​​the upper bottom of the conical pumping unit is smaller than the area of ​​the lower bottom. The top of the columnar pumping unit is connected to the pumping pipe, and the bottom of the columnar pumping unit is connected to the upper bottom of the conical pumping unit. A plurality of pumping holes for pumping water are arranged on the surface of the pumping assembly.

6. The vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods according to claim 1 is characterized by: The interior of the vacuum tank is provided with a liquid level sensor 2 for monitoring the liquid level, a shearing net for shearing is provided below the liquid level sensor 2, a vacuum pump is provided outside the vacuum tank, a solenoid valve 3 is provided between the vacuum pump and the vacuum tank, and the outside of the vacuum tank is also provided with a liquid level observation window, a pressure gauge for detecting the air pressure and a second air inlet pipe, and a solenoid valve 4 is provided on the second air inlet pipe.

7. The vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods according to claim 1 is characterized by: The water outlet pipe is provided with a solenoid valve five, a drainage pump for drainage and a solenoid valve six.

8. The vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods according to claim 1 is characterized by: The filter screens 1 and 2 are arranged at an angle, a sewage outlet 1 is arranged above the filter screen 1, and a sewage outlet 2 is arranged above the filter screen 2. The metal mesh 2 is arranged horizontally, a sewage pipe is arranged below the metal mesh 2, and a solenoid valve 7 and a sewage pump are arranged on the sewage pipe.

9. The vacuum negative pressure drainage system for combined rainwater and sewage in old neighborhoods according to claim 1 is characterized by: A liquid level sensor 3 for monitoring the liquid level is arranged inside the processing tank.

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