CN203200886U - Drainage backward-flowing prevention system for equipment in clean area of pharmaceutical factory - Google Patents

Abstract

The utility model relates to a drainage anti-backflow system for equipment in a clean area of a pharmaceutical factory, which is suitable for draining equipment installed in the clean area of a pharmaceutical factory. The drainage and anti-backflow system for the equipment in the clean area of the pharmaceutical factory includes the pharmaceutical factory building and the drainage tank. The equipment drainage pipe of the pharmaceutical factory building is connected to the drainage tank through the drain valve, and the end of the drainage tank is connected to the factory building drainage pipe. Connect the cooling water pipeline, install a pressure relief valve on the drainage tank, install a data acquisition device inside the drainage tank, and connect the data acquisition device to the control system, which controls the drain valve, cooling water valve and pressure relief valve respectively. The system has a complete structure, and has corresponding detection methods and treatment methods for various risks that arise, which greatly reduces the risk of cross-contamination caused by recharging during the drainage process. The entire system can be automatically controlled, and can timely and effectively deal with the impact of the increase in the pressure of the plant pipeline on the drainage of the equipment and the environment of the clean area.

Description

Drainage and anti-backflow system for equipment in clean area of pharmaceutical factory

technical field

The utility model relates to a drainage anti-backflow system for equipment in a clean area of a pharmaceutical factory, which is suitable for draining equipment installed in the clean area of a pharmaceutical factory. the

Background technique

Inside the pharmaceutical factory building, especially the biopharmaceutical factory building, the cleanliness requirements are very high, and the clean area has drainage requirements. The connection between the drainage pipe of the equipment and the factory building drain pipe needs to be effectively cut off to prevent the pressure in the drain pipe from flowing back into the clean area. In the environment or equipment, the clean area environment or equipment pipelines are polluted, resulting in cross-contamination. Moreover, the drainage pipe of the clean workshop is connected to multiple devices. In order to prevent the high-temperature water discharged from the device from affecting other devices, there is a requirement to cool down the high-temperature discharge of the device. the

Utility model content

According to the above requirements, what the utility model needs to solve is to provide a drainage anti-backflow system for equipment in the clean area of a pharmaceutical factory. In the clean area of equipment or workshop. the

The drainage anti-backflow system for equipment in the clean area of a pharmaceutical factory provided by the utility model includes a pharmaceutical factory building and a drainage tank. The tank is also connected to the cooling water pipeline through the cooling water valve, a pressure relief valve is installed on the drainage tank, a data acquisition device is installed inside the drainage tank, the data acquisition device is connected to the control system, and the control system controls the drain valve, the cooling water valve and the pressure relief valve respectively. the

An upper baffle and a lower baffle are installed in the drainage box, the upper end of the upper baffle is fixed on the top of the drainage box, and there is a gap between the lower end of the upper baffle and the bottom of the drainage box; the lower baffle is arranged on On one side of the upper baffle, its lower end is fixed on the bottom of the drainage box, and its upper end has a gap with the top of the drainage box. the

The data acquisition device includes a temperature sensor, a pressure sensor and a liquid level sensor, and the data acquisition device is connected with the control system. The control system includes a processing device and its auxiliary circuits, which are used to collect the signals detected by the temperature sensor, pressure sensor and liquid level sensor, and control the opening and closing of the drain valve, cooling water valve and pressure relief valve according to the preset, and automatically realize Discharge cooling, anti-backflow function. the

The water outlet pipe of the drainage box is connected to the factory building drainage pipe through the pipe connection point. The connection and maintenance of pipelines are facilitated by setting pipeline connection points. the

The drain valve is installed in the drain pipe of the equipment, the cooling water valve is connected with the cooling water pipe, and the pressure relief valve is directly connected to the atmosphere. The upper baffle and the lower baffle in the drainage box are used to mix high-temperature discharge water and cooling water. And there are slow discharge holes at the root of the lower baffle to ensure that the drainage tank can be completely discharged. the

working principle:

The drainage pipe of the drainage box is tightly connected with the drainage pipe of the factory building to ensure that it will not affect the installation environment. the

The pipeline of the pressure relief valve of the drainage tank is directly connected to the atmosphere to ensure that it will not affect the installation environment. the

When the equipment is draining, the temperature sensor detects the drain temperature at the drain pipe. If the discharge temperature exceeds the limit value, the control system will open the cooling water valve to cool the high-temperature discharge water. the

During the equipment drainage process, when the liquid level sensor and pressure sensor detect that the liquid level or pressure in the drainage tank exceeds the standard, the control system will first close the drain valve to prevent backflow and backfill, and the equipment will stop draining. At the same time, the pressure relief valve will be opened to release the pipeline. Internal pressure, to ensure that there will be no leakage at the connection point of the pipeline due to the high internal pressure of the pipeline, thereby polluting the environment in the clean area. After the internal pressure of the plant drainage pipe is normal, the equipment starts to drain again. the

The beneficial effects that the utility model has are:

The system has a complete structure, and has corresponding detection methods and treatment methods for various risks that arise, which greatly reduces the risk of cross-contamination caused by recharging during the drainage process. The entire system can be automatically controlled, and can promptly and effectively deal with the impact of the increase in the pressure of the plant pipeline on the drainage of the equipment and the environment of the clean area.

Description of drawings

Fig. 1 is a structural representation of the utility model:

In the figure: 1. drain valve; 2. drain tank; 3. temperature sensor; 4. pressure sensor; 5. liquid level sensor; 6. pressure relief valve; 7. cooling water valve; 8. upper baffle; 9. Lower baffle; 10. Pipe connection point.

Detailed ways

Embodiments of the utility model are further described below in conjunction with the accompanying drawings:

The drainage anti-backflow system for equipment in the clean area of a pharmaceutical factory as shown in Figure 1 includes the pharmaceutical factory building and the drainage tank 2. The equipment drainage pipe of the pharmaceutical factory building is connected to the drainage tank 2 through the drain valve 1, and the end of the drainage tank 2 is connected to the factory building Drainage pipeline, drainage tank 2 is also connected to the cooling water pipeline through the cooling water valve 7, a pressure relief valve is installed on the drainage tank, a data acquisition device is installed inside the drainage tank, and the data acquisition device is connected to the control system, and the control system controls the drain valve 1 and cooling water respectively Valve 7 and pressure relief valve 6. the

An upper baffle 8 and a lower baffle 9 are installed in the drainage box 2, the upper end of the upper baffle 8 is fixed on the top of the drainage box, and the lower end of the upper baffle 8 has a gap with the bottom of the drainage box 2; the lower baffle The plate 9 is arranged on one side of the upper baffle 8, and its lower end is fixed on the bottom of the drainage box 2. There is a gap between its upper end and the top of the drainage box 2, and the root of the lower baffle 9 has a slow discharge hole. the

The data acquisition device includes a temperature sensor, a pressure sensor and a liquid level sensor, and the data acquisition device is connected with the control system. the

During the drainage process of the pharmaceutical plant equipment, the water in the equipment will enter the drainage tank 2 through the drainage valve 1, and the temperature sensor 3 will automatically detect the drainage temperature. When the temperature exceeds the discharge limit value, the control system will open the cooling water valve 7, and the cooling water and equipment will The discharge water is fully mixed through the circuitous deflections of the upper baffle plate 8 and the lower baffle plate 9 to effectively reduce the temperature of the discharge water. the

During the equipment drainage process, when the liquid level sensor 5 detects that the liquid level in the drainage tank 2 exceeds the standard or the pressure sensor 4 detects that the pressure in the drainage tank 2 exceeds the standard, the control system closes the equipment drainage valve 1 to prevent the water or air in the plant pipeline from passing through the drainage. Case 2 is backflowed back to the plant equipment of the pharmaceutical factory. Open the pressure relief valve 6 while the equipment drainage is stopped, and release the pressure in the pipeline of the factory building through the drainage tank 2, so as to ensure that the pipeline connection point 10 will not leak due to the high pressure in the pipeline, thereby polluting the environment in the clean area. After the internal pressure of the plant drainage pipe is normal, the equipment starts to drain again. the

Claims (4)

1. The drainage anti-backflow system for the equipment in the clean area of the pharmaceutical factory includes the pharmaceutical factory building and the drainage tank (2). The equipment drainage pipe of the pharmaceutical factory building is connected to the drainage tank (2) through the drain valve (1), and the drainage tank (2) ) end is connected to the factory building drainage pipe, the drainage tank (2) is also connected to the cooling water pipeline through the cooling water valve (7), the pressure relief valve (6) is installed on the drainage tank, and the data acquisition device is installed inside the drainage tank, and the data acquisition device is connected to the control system , the control system respectively controls the drain valve (1), the cooling water valve (7) and the pressure relief valve (6). the 2. The drainage anti-backflow system for equipment in the clean area of a pharmaceutical factory according to claim 1, characterized in that an upper baffle (8) and a lower baffle (9) are installed in the drainage tank (2) , the upper end of the upper baffle (8) is fixed on the top of the drainage box, and there is a gap between the lower end of the upper baffle (8) and the bottom of the drainage box (2); the lower baffle (9) is set on the upper baffle ( 8) On one side, its lower end is fixed at the bottom of the drainage box (2), its upper end has a gap with the top of the drainage box (2), and the root of the lower baffle (9) is provided with slow drainage holes. the 3. The drainage anti-backflow system for equipment in the clean area of a pharmaceutical factory according to claim 1, wherein the data acquisition device includes a temperature sensor, a pressure sensor and a liquid level sensor, and the data acquisition device is connected to the control system. the 4. The drainage anti-backflow system for equipment in the clean area of a pharmaceutical factory according to claim 1, wherein the outlet pipe of the drainage tank is connected to the drainage pipe of the factory building through the pipe connection point (10). the

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