CN216522302U

CN216522302U - A drainage device for clean district terminal surface cooler

Info

Publication number: CN216522302U
Application number: CN202123219687.2U
Authority: CN
Inventors: 喻星星; 肖鹏; 张敏
Original assignee: Zhejiang Meiyang International Engineering Design Co ltd
Current assignee: Zhejiang Meiyang International Engineering Design Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-05-13
Anticipated expiration: 2031-12-21

Abstract

The utility model relates to the technical field of medicine production and purification, in particular to a drainage device for a tail end surface cooler of a clean area, which comprises a drainage pipe, a water seal pipe arranged on the drainage pipe, a drainage electromagnetic valve arranged on the drainage pipe and a conductivity sensor, wherein the drainage electromagnetic valve is arranged on the drainage pipe; the conductivity sensor is connected with the water discharge electromagnetic valve, and the water discharge electromagnetic valve adjusts the on-off state according to the signal of the conductivity sensor. The device of the utility model automatically controls the opening of the water discharge electromagnetic valve by using the conductivity sensor, discharges water in time when condensed water exists, and cuts off the passage of the water discharge pipe when no condensed water exists, thus avoiding the risk of drug pollution caused by the air backflow of the water discharge pipe of the surface air cooler no matter in the normal operation state or the shutdown state of the purification air conditioner.

Description

A drainage device for clean district terminal surface cooler

Technical Field

The utility model relates to the technical field of medicine production and purification, in particular to a drainage device for a surface cooler at the tail end of a clean area.

Background

Pharmaceutical production needs to be done in a strictly controlled clean room which requires good temperature, humidity, cleanliness, etc. In order to meet the requirements, a purification air conditioner is required to supply air to a clean area.

For a common clean room, the air supply of the purification air conditioner can reduce the room temperature to the required temperature. However, in some clean rooms, the heat generated by the process equipment in the clean room is large, which increases the cooling load, and the air supply of the purification air conditioner is not enough to reduce the room temperature to the required temperature, so that the room is in an overheated state, which cannot meet the requirements of pharmaceutical production. In order to solve the problem of overheating of a room, an end surface cooler is usually added to an air supply pipe of the room to reduce the air supply temperature and take away the heat of the room. The humiture in room can accurate control to end surface cooler, but ordinary end surface cooler drain pipe can have the condition that the air flows backward when shutting down, and these air of flowing backward into the blast pipe can bring the risk of polluting to the drug production.

The commonly used solution at present is as follows: and a water seal pipe is arranged on a drain pipe of a surface cooler at the tail end of the common clean area. When the purifying air conditioner normally operates, condensed water is generated in the surface cooler at the tail end, a water seal is formed in the water seal pipe, and the water seal can block air from flowing backwards into the air supply pipe, so that the risk of pollution in medicine production is eliminated (see figure 1). When the purifying air conditioner is stopped, no condensed water is generated in the surface air cooler at the tail end, and a water seal cannot be formed in the water seal pipe, so that air flows backwards into the air supply pipe, and the risk of pollution is brought to the production of medicines (see fig. 2). It is obvious that the solution of simply arranging the water seal pipe still cannot solve the problem of air backflow when the purifying air conditioner is stopped.

In short, the prior art still has the problem that when the purification air conditioner is shut down, air flows backward into the blast pipe through the drain pipe, and the production of medicines brings pollution risks.

The present application was made based on this.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects in the prior art, the utility model provides the drainage device for the surface cooler at the tail end of the clean area, which can prevent air from flowing backwards into the air supply pipe through the drainage pipe to cause air supply pollution when the purification air conditioner works and is shut down.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a drainage device for a surface cooler at the tail end of a clean area comprises a drainage pipe, a water seal pipe arranged on the drainage pipe, a drainage electromagnetic valve arranged on the drainage pipe and a conductivity sensor; the conductivity sensor is connected with the drainage electromagnetic valve, and the drainage electromagnetic valve adjusts the on-off state according to the signal of the conductivity sensor.

In order to further ensure that the air can be prevented from flowing backwards under the normal operation and shutdown states of the purification air conditioner, the utility model provides a preferable scheme, the drainage electromagnetic valve is normally closed, when the conductivity sensor detects that condensed water is accumulated in the water seal pipe, a signal is output, and the drainage electromagnetic valve is opened; when the conductivity sensor does not detect the condensed water accumulated in the water seal pipe, a signal is output, and the water drainage electromagnetic valve is closed.

In order to ensure the effectiveness of the water seal and the timeliness of air blocking, the utility model provides a preferable scheme, the conductivity sensor is close to the inlet of the drain pipe, and the drain electromagnetic valve is close to the outlet of the drain pipe.

In order to further ensure the effectiveness of the water seal, the utility model provides a preferable scheme that the conductivity sensor is positioned at or above the highest position of the water seal pipe,

in order to ensure the effectiveness of the water seal, the utility model provides a preferable scheme, and the height of the water seal in the water seal pipe is 120 mm.

In order to further ensure the effectiveness of the water seal, the utility model provides a preferable scheme, and the water seal pipe adopts an S-shaped bend.

Compared with the prior art, the utility model can realize the following beneficial technical effects:

the device of the utility model automatically controls the opening of the water discharge electromagnetic valve by using the conductivity sensor, discharges water in time when condensed water exists, and cuts off the passage of the water discharge pipe when no condensed water exists, thus avoiding the risk of drug pollution caused by the air backflow of the water discharge pipe of the surface air cooler no matter in the normal operation state or the shutdown state of the purification air conditioner.

Drawings

FIG. 1 is a schematic diagram of the water seal effect of a tail end surface cooler in a prior art operating state adopting a water seal structure;

FIG. 2 is a schematic diagram of the water seal effect of a tail end surface cooler in a shutdown state of the prior art adopting a water seal structure;

FIG. 3 is a schematic structural diagram of a water discharge device for a surface cooler at the end of a clean zone in the embodiment.

Description of reference numerals: the device comprises a tail end surface cooler 1, an air supply pipe 2, a drain pipe 3, a water seal pipe 4, a floor drain 5, a conductivity sensor 6, a drain electromagnetic valve 7, condensate water a with the height of H, no condensate water b, an air blocking position c, a clean air flow direction (air supply) d and an external air flow direction (backflow) e.

Detailed Description

In order to make the technical means and technical effects achieved by the technical means of the present invention more clearly and more perfectly disclosed, the following embodiments are provided, and the following detailed description is made with reference to the accompanying drawings:

referring to fig. 3, fig. 3 is a schematic structural diagram of a drainage device for a clean area end surface cooler in the present embodiment, which includes a drainage pipe, a water seal pipe disposed on the drainage pipe, a drainage electromagnetic valve mounted on the drainage pipe, and an electrical conductivity sensor; the conductivity sensor is connected with the drainage electromagnetic valve, and the drainage electromagnetic valve adjusts the on-off state according to the signal of the conductivity sensor.

In the embodiment, the drainage electromagnetic valve is normally closed, and when the conductivity sensor detects that condensed water is accumulated in the water seal pipe, a signal is output, and the drainage electromagnetic valve is opened; when the conductivity sensor does not detect the condensed water accumulation in the water seal pipe, the conductivity sensor outputs a signal, closes the drainage electromagnetic valve, further ensures that the air can be prevented from flowing backwards under the normal operation and shutdown states of the purification air conditioner,

in this embodiment, the conductivity sensor is proximate to the inlet of the drain, and the drain solenoid valve is proximate to the outlet of the drain. The conductivity sensor is close to the inlet of the drain pipe, so that the effective height of the water seal effect can be ensured when the condensate water is detected; the water discharge electromagnetic valve is close to the outlet of the water discharge pipe, and can timely block the outside air through opening and closing to prevent backflow from entering the water seal pipe.

In this embodiment, conductivity sensor is located or is higher than the water seal pipe highest point, and conductivity sensor is close to the entry of drain pipe, and it is for guaranteeing the effective height of water seal effect when can guarantee to detect to have the comdenstion water.

In the embodiment, the height of the water seal in the water seal pipe is 120mm, and the height can ensure the effectiveness of the water seal.

In this embodiment, the water seal pipe adopts the S type to bend, guarantees the validity of water seal.

The above description is provided for the purpose of further elaboration of the technical solutions provided in connection with the preferred embodiments of the present invention, and it should not be understood that the embodiments of the present invention are limited to the above description, and it should be understood that various simple deductions or substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and all such alternatives are included in the scope of the present invention.

Claims

1. A drainage device for a surface cooler at the tail end of a clean area comprises a drainage pipe and a water seal pipe arranged on the drainage pipe, and is characterized by further comprising a drainage electromagnetic valve and a conductivity sensor which are arranged on the drainage pipe; the conductivity sensor is connected with the drainage electromagnetic valve, and the drainage electromagnetic valve adjusts the on-off state according to the signal of the conductivity sensor.

2. The drain device for the clean area end surface cooler according to claim 1, wherein the drain solenoid valve is normally closed, and when the conductivity sensor detects that condensed water is accumulated in the water seal pipe, a signal is output to open the drain solenoid valve; when the conductivity sensor does not detect the condensed water accumulated in the water seal pipe, a signal is output, and the water drainage electromagnetic valve is closed.

3. The drain device for the clean zone end surface cooler according to claim 1, wherein the conductivity sensor is close to the inlet of the drain pipe, and the drain solenoid valve is close to the outlet of the drain pipe.

4. The drain device for the clean zone end surface cooler according to claim 1, wherein the conductivity sensor is located at or above the highest point of the water sealed pipe.

5. The drain device for the clean zone end surface cooler according to claim 1, wherein the height of the water seal in the water seal pipe is 120 mm.

6. The drain device for the clean zone end surface cooler according to claim 1, wherein the water seal pipe adopts an S-shaped bend.