Sewage collecting and discharging system for garbage transfer station

Abstract

The utility model relates to a waste transfer station sewage collecting and discharging system in the field of waste transfer station sewage collecting devices, which comprises a vacuum sewage tank, a water discharging pipe is arranged at the bottom of the vacuum sewage tank, a water inlet pipe and a scavenging port are arranged at the top of the vacuum sewage tank, and the water inlet pipe is connected with a sewage outlet pipe of waste treatment equipment through a water inlet pipeline. The scavenging port branch is connected with an inflation branch and a vacuum branch, the inflation branch is connected with a pressure station, and the vacuum branch is connected with a vacuumizing system. Compared with a non-vacuum sewage storage device, the sewage collection and discharge system for the garbage transfer station has the following beneficial effects that the vacuum sealed storage of the sewage of the garbage transfer station is realized, the water is smoothly fed and discharged, and the problem of peculiar smell emission of the sewage is avoided.

Description

Technical Field

[0001] The utility model relates to the field of sewage collection devices for garbage transfer stations, in particular to a sewage collection and discharge system for a garbage transfer station. Background Art

[0002] Waste transfer stations generate large amounts of wastewater when processing wet waste with a high water content. Furthermore, wastewater is temporarily stored in the wastewater transfer tanks of mobile garbage trucks, all of which needs to be collected at the waste transfer station. This wastewater requires further treatment before it can be discharged or used for other purposes. The tanks used to collect this wastewater are generally sealed to prevent odors from escaping and potentially affecting the surrounding environment. This also prevents expansion of gases within the tanks, which could cause pipe ruptures. A more reliable method is to use vacuum storage within the wastewater tanks, which prevents gas from escaping and improves wastewater storage safety. Therefore, a safe and reliable vacuum wastewater storage system is required, while also considering filtration to facilitate water inflow and outflow. Utility Model Content

[0003] The utility model aims at the sealing water storage demand of the sewage tank of the garbage transfer station in the prior art, and provides a garbage transfer station sewage collection and discharge system, which realizes vacuum sealing water storage, prevents the odor of the sewage storage system, and ensures safe storage and discharge.

[0004] The purpose of the utility model is achieved in this way. A sewage collection and discharge system for a garbage transfer station includes a vacuum sewage tank, a drain pipe is provided at the bottom of the vacuum sewage tank, a water inlet pipe and a ventilation port are provided at the top, the water inlet pipe is connected to the sewage outlet pipe of the garbage treatment equipment through a water inlet pipe, the ventilation port branch is connected to an inflation branch and a vacuum branch, the inflation branch is connected to the pressure station, and the vacuum branch is connected to the vacuum pumping system.

[0005] The wastewater collection and discharge system for a garbage transfer station of the present invention collects wastewater from garbage processing equipment or other garbage transfer equipment through a vacuum sewage tank. A ventilation port is provided at the top of the sewage tank, and the ventilation port is connected to an air-charging branch and a vacuum branch. The air-charging branch is used to inflate the vacuum tank to restore the pressure to normal pressure during sewage discharge, allowing the sewage to be discharged from the bottom. The vacuum branch is closed during drainage. The vacuum branch is used to vacuum the tank when storing water and when water is introduced. At this time, the air-charging path is closed. Therefore, compared with non-vacuum sewage storage devices, the wastewater collection and discharge system of the present invention has the following advantages: it realizes vacuum-sealed storage of wastewater from the garbage transfer station, and facilitates water introduction and discharge, avoiding the problem of sewage odor.

[0006] To facilitate vacuuming the vacuum sewage tank, the vacuuming system includes a vacuum pump, the air inlet of the vacuum pump is connected to the vacuum branch through a vacuum pipeline, and the exhaust port of the vacuum pump is connected to the inlet end of the demister of the steam-water separator; the steam-water separator includes a demister and a water collecting tank, the exhaust port of the demister is connected to the deodorization pipe, a water collecting circuit is provided at the bottom of the water collecting tank, the water collecting circuit is connected to the water supply branch of the vacuum pump, the water collecting tank is provided with a water supply pipeline, and a liquid level sensor and a temperature sensor are provided in the water collecting tank.

[0007] To facilitate the water intake and drainage of the vacuum sewage tank, the pressure station includes a positive pressure gas storage tank and an air compressor connected by pipelines. The air compressor regularly stores gas in the positive pressure gas storage tank until the preset pressure value is reached in the tank. The positive pressure gas storage tank is used to inflate the tank when the vacuum sewage tank is drained.

[0008] As a preferred solution of the present invention, two vacuum sewage tanks are provided, and two positive pressure air storage tanks are also provided. Each positive pressure air storage tank is connected to the inflation branch of one of the vacuum sewage tanks via an inflation valve, and the pressure inflation end of each positive pressure air storage tank is connected to the air compressor via a fluid control valve.

[0009] As a further priority of the present invention, the vacuum branches of each vacuum sewage tank are respectively connected to two groups of vacuum pumps in parallel, each vacuum branch is respectively provided with an air filter, a pressure sensor and an exhaust valve, and the exhaust end of each group of vacuum pumps is respectively connected to the vacuum branch through the pump branch via a check valve; the discharge ports of the vacuum pumps are respectively connected to the discharge branches, and the discharge branches are converged to the inlet pipes of the steam-water separator, and the inlet pipes are provided with a filter and a water inlet valve.

[0010] In order to facilitate the decompression and exhaust of the vacuum sewage tank, a ventilation branch is also branched on the vacuum branch between the pressure sensor and the exhaust valve. The ventilation branch is connected to the deodorization pipe through the ventilation valve. The ventilation branch is used for vacuum decompression and ventilation when the sewage tank discharges sewage.

[0011] In order to facilitate timely replenishment when the water level in the water collecting tank of the steam-water separator is too low or the water temperature is high, the water collecting tank of the steam-water separator is also provided with a water replenishment pipeline, which is connected to the water supply pipeline through a water inlet valve.

[0012] In order to facilitate monitoring of the water volume in the vacuum sewage tank, a number of weighing sensors are symmetrically arranged at the center of the bottom of the vacuum sewage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a flow diagram of the sewage collection and discharge system of the garbage transfer station of the utility model.

[0014] Among them, 1 is a vacuum sewage tank; 2 is a drain pipe; 3 is a ventilation port; 4 is a water inlet pipe; 5 is a water pump; 6 is a valve air storage tank; 7 is an air compressor; 8 is a fluid control valve; 9 is a positive pressure air storage tank; 10 is an air charging valve; 11 is an air charging branch; 12 is a vacuum branch; 13 is an air filter; 14 is a pressure sensor; 15 is a ventilation valve; 16 is an air extraction valve; 17 is a check valve; 18 is a vacuum pump; 19 is a steam-water separator; 20 is a deodorization pipe; 21 is a water supply pipe; 22 is a water collection circuit; 23 is a water inlet valve; 24 is a filter; 25 is a weighing sensor. DETAILED DESCRIPTION

[0015] like Figure 1 The wastewater collection and discharge system for a waste transfer station of the present invention is shown. It includes a vacuum wastewater tank 1 with a drain pipe 2 at the bottom and a water inlet pipe 4 and ventilation port 3 at the top. The water inlet pipe 4 is connected to the wastewater outlet pipe of the waste treatment equipment via an inlet pipeline. Generally, wastewater in waste transfer stations comes from two sources: one is the wastewater discharged after the wet waste is compressed by the station's waste compression tank, which needs to be collected and processed; the other is wastewater collected from other locations and transported to the waste transfer station via a wastewater transfer tank for centralized treatment. Therefore, the water inlet pipe of the present invention connects to the wastewater transfer tank and the waste compression tank's discharge pipes via a pumping valve 5.

[0016] The ventilation port 3 of the present invention is connected to a gas-filled branch 11 and a vacuum branch 12 . The gas-filled branch 11 is connected to a pressure station, and the vacuum branch 12 is connected to a vacuum pumping system.

[0017] To facilitate vacuuming the vacuum sewage tank 1, the vacuuming system includes a vacuum pump 18, the air inlet of the vacuum pump 18 is connected to the vacuum branch 12 through a vacuum pipe, and the exhaust port of the vacuum pump 18 is connected to the demister inlet of the steam-water separator 19; the steam-water separator 19 includes a demister and a water collecting tank, the exhaust port of the demister is connected to the deodorization pipe 20, and a water collecting circuit 22 is provided at the bottom of the water collecting tank, the water collecting circuit 22 is connected to the water supply branch of the vacuum pump 18, the water collecting tank is provided with a water supply pipe 21, and a liquid level sensor and a temperature sensor are provided in the water collecting tank. When the liquid level sensor detects that the water level in the water collecting tank reaches the set high water level, the valve of the water collecting circuit 22 opens and starts to drain water to the water supply branch of the vacuum pump; when the temperature sensor detects that the temperature in the box is high, it will issue a high temperature alarm, and the water supply branch 21 will open to appropriately add low-temperature water to the water collecting tank to cool it down.

[0018] To facilitate the water intake and drainage of the vacuum sewage tank 1, the pressure station includes a positive pressure gas storage tank 9 and an air compressor 7 connected by pipelines. The air compressor 7 regularly stores gas in the positive pressure gas storage tank 9 until the preset pressure value is reached in the tank. The positive pressure gas storage tank 9 is used to inflate the tank when the vacuum sewage tank 1 is drained. At the same time, in order to facilitate the pneumatic air supply to various valves installed in all pipelines in the system, the pressure station is also separately provided with a valve gas storage tank 6 for inflating each valve.

[0019] In order to ensure the stable operation of the sewage collection and discharge system of the present invention, two vacuum sewage tanks 1 are provided, which can be used alternately. When the amount of sewage is large, they can be used simultaneously. In order to ensure the stable movement of each vacuum sewage tank 1 and normal water inlet and drainage, two positive pressure air storage tanks 9 are also provided. Each positive pressure air storage tank 9 is respectively connected to the inflation branch 11 of one of the vacuum sewage tanks through the inflation valve 10, and the pressure inflation end of each positive pressure air storage tank 9 is respectively connected to the air compressor 7 through the fluid control valve 8.

[0020] In order to ensure the stable maintenance of the vacuum system of each vacuum sewage tank, the vacuum branch 12 of each vacuum sewage tank 1 is connected in parallel with two groups of vacuum pumps 18, and each vacuum branch is provided with an air filter 13, a pressure sensor 14 and an exhaust valve 16. The exhaust end of each group of vacuum pumps 18 is connected to the vacuum branch 12 through the pump branch and the check valve 17; the discharge port of the vacuum pump 18 is connected to the discharge branch, and the discharge branch is gathered to the inlet pipe of the steam-water separator 19, and the inlet pipe is provided with a filter 24 and a water inlet valve 23.

[0021] In order to facilitate the pressure relief and exhaust of the vacuum sewage tank 1, a ventilation branch is also branched off on the vacuum branch between the pressure sensor 14 and the exhaust valve 16. The ventilation branch is connected to the deodorization pipe 20 through the ventilation valve 15. The ventilation branch is used for vacuum pressure relief and ventilation when the sewage tank discharges sewage.

[0022] In order to facilitate timely replenishment when the water level in the water collecting tank of the steam-water separator 19 is too low or the water temperature is high, the water collecting tank of the steam-water separator 19 is also provided with a water replenishment pipeline 21, which is connected to the water supply pipeline through a water inlet valve.

[0023] In order to facilitate the monitoring of the water volume in the vacuum sewage tank, a number of weighing sensors 25 are symmetrically arranged at the bottom center of the vacuum sewage tank 1. According to the water storage volume and deadweight of the vacuum sewage tank 1, when the deadweight of the vacuum sewage tank 1 reaches 90% of the maximum water storage capacity (pre-set), the drain valve 2 at the bottom opens, the vacuum branch of the ventilation pipe at the top is closed, the ventilation branch begins to vacuum pressure relief, and at the same time, air is inflated into the tank to the bottom to drain smoothly, until the weight displayed by the weighing sensor 25 reaches the total weight corresponding to the preset minimum water level, and the drainage is completed.

[0024] The sewage collection and discharge system of the garbage transfer station of the present invention collects sewage from the garbage treatment equipment or other equipment of the garbage transfer station through the vacuum sewage tank 1, and can vacuum the tank through the vacuum branch. When the sewage in the tank needs to be discharged, the drain valve 2 at the bottom is opened, and the ventilation valve 15 of the ventilation branch is opened to first perform vacuum pressure relief, and at the same time, the fluid control valve 8 of the corresponding tank body is closed, and the inflation valve 10 of the corresponding inflation branch is opened to inflate the tank through the inflation branch so that the sewage can be discharged smoothly through the drain pipe at the bottom; after the drainage is completed, the drain valve 2, the ventilation valve 15, and the inflation valve 10 are closed, and the corresponding fluid control valve 8 is opened; when the tank body is vacuumed, the exhaust valve of one of the vacuum pipes of the vacuum branch corresponding to the tank body is opened, and the tank body is vacuumed until the pressure in the tank reaches a predetermined vacuum value (-0.7 bar), the exhaust valve is closed, and the vacuuming is completed; when there is sewage in the sewage pipe that needs to be discharged into the vacuum sewage tank 1, the pumping valve 5 is opened to store water in the tank until the water filling is completed, and the pumping valve is closed.

[0025] In summary, the wastewater collection and discharge system for a garbage transfer station of the present invention realizes the vacuum-sealed storage of wastewater in the garbage transfer station, and enables smooth water intake and discharge, thus avoiding the problem of wastewater odor.

Claims

1. A wastewater collection and discharge system for a garbage transfer station, characterized in that: It includes a vacuum sewage tank, which has a drain pipe at the bottom and a water inlet pipe and a ventilation port at the top. The water inlet pipe is connected to the sewage outlet pipe of the garbage disposal equipment through a water inlet pipe. The ventilation port branch is connected to an inflation branch and a vacuum branch. The inflation branch is connected to the pressure station, and the vacuum branch is connected to the vacuum pumping system.

2. The wastewater collection and discharge system of the garbage transfer station according to claim 1, characterized in that: The vacuum system includes a vacuum pump, the air inlet of the vacuum pump is connected to the vacuum branch through a vacuum pipeline, and the exhaust port of the vacuum pump is connected to the inlet end of the demister of the steam-water separator; the steam-water separator includes a demister and a water collecting tank, the exhaust port of the demister is connected to the deodorization pipe, a water collecting circuit is provided at the bottom of the water collecting tank, the water collecting circuit is connected to the water supply branch of the vacuum pump, the water collecting tank is provided with a water supply pipeline, and a liquid level sensor and a temperature sensor are provided in the water collecting tank.

3. The wastewater collection and discharge system of the garbage transfer station according to claim 2, characterized in that: The pressure station includes a positive pressure gas storage tank and an air compressor connected by pipelines. The air compressor regularly stores gas in the positive pressure gas storage tank until the pressure in the tank reaches a preset value. The positive pressure gas storage tank is used to inflate the tank when the vacuum sewage tank is drained.

4. The wastewater collection and discharge system of the garbage transfer station according to claim 3, characterized in that: There are two vacuum sewage tanks and two positive pressure air storage tanks. Each positive pressure air storage tank is connected to the inflation branch of one of the vacuum sewage tanks via an inflation valve, and the pressure inflation end of each positive pressure air storage tank is connected to the air compressor via a fluid control valve.

5. The wastewater collection and discharge system of the garbage transfer station according to claim 4, characterized in that: The vacuum branch of each vacuum sewage tank is connected to two groups of vacuum pumps in parallel, each vacuum branch is provided with an air filter, a pressure sensor and an exhaust valve, and the exhaust end of each group of vacuum pumps is connected to the vacuum branch through a pump branch and a check valve; the discharge port of the vacuum pump is connected to a discharge branch, and the discharge branch is gathered to the inlet pipeline of the steam-water separator, and the inlet pipeline is provided with a filter and a water inlet valve.

6. The wastewater collection and discharge system of a garbage transfer station according to claim 5, characterized in that: A ventilation branch is also provided on the vacuum branch between the pressure sensor and the air extraction valve. The ventilation branch is connected to the deodorization pipe through the ventilation valve. The ventilation branch is used for vacuum pressure relief and ventilation when the sewage tank discharges sewage.

7. The wastewater collection and discharge system of a garbage transfer station according to claim 2, characterized in that: The water collecting tank of the steam-water separator is also provided with a water supply pipeline, and the water supply pipeline is connected to the water supply pipeline via a water inlet valve.

8. The wastewater collection and discharge system for a garbage transfer station according to any one of claims 1 to 7, characterized in that: A plurality of weighing sensors are symmetrically arranged at the center of the bottom of the vacuum sewage tank.

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