CN202823409U - Clean type weighing room - Google Patents

Abstract

The utility model discloses a clean type weighing room which comprises a working area. A return air box body and a draught fan box body are arranged at one side of the working area. An air-out box body is arranged at the upper portion of the working area. A draught fan is arranged in the draught fan box body. An air volume adjusting valve is arranged at the upper end of the air-out box body. A first high-efficiency filter and a uniform flowing membrane are sequentially arranged at the upper end of the working area. The clean type weighing room solves the problems in the prior art that cross contamination is easy to generate and cleanliness of the weighting room can not be guaranteed due to the fact that air pressure of the working area is the same with outside air pressure. By using vertical one-way airflow, the clean type weighing room is capable of enabling air supply and air exhaust to be without residual dust through the high-efficiency filter, a medium efficiency filter and a primary efficiency filter, and thereby secondary pollution is avoided. Part of clean air is cycled in the working area and part of the clean air is exhausted into a nearby area, and then the working area produces negative pressure, and thereby dust in the working area does not spread to outdoor to a certain extent and a function of protecting external environment is achieved.

Description

Clean weighing room

technical field

The utility model relates to a weighing room, in particular to a clean weighing room.

Background technique

The weighing room is a special local cleaning equipment used in places such as pharmaceuticals, microbial research, and scientific experiments. The dust and reagents are weighed and packaged in the equipment, which can control the spillage and uplift of dust and reagents, and prevent dust and reagents from contaminating Inhalation hazards to the human body, avoid cross-contamination of dust and reagents, and protect the safety of the external environment and indoor personnel.

However, in the existing weighing room, the air pressure in the working area is usually the same as the external air pressure, which is prone to cross-contamination, and the cleanliness of the weighing room cannot be guaranteed.

Utility model content

The technical problem to be solved by the utility model is to provide a clean weighing room, which uses vertical unidirectional airflow to circulate part of the clean air in the working area, and part of it is discharged to the nearby area, so that the working area can generate negative pressure and prevent cross-contamination. Used to ensure a high cleanliness environment in the work area.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A clean weighing room, including a work area, a return air box and a fan box are installed on one side of the work area, and an air outlet box is installed on the top, and a fan is installed in the fan box. The upper end of the air outlet box is provided with an air volume regulating valve, and the upper end of the working area is sequentially provided with a first high-efficiency filter and a flow equalizing membrane.

The aforementioned clean weighing room is characterized in that: the working area includes a plurality of stainless steel punching workbenches, and the return air box corresponding to the position of the stainless steel punching workbenches is provided with a primary filter , a medium-effect filter is also installed outside the primary-effect filter.

The aforementioned clean weighing room is characterized in that: a control electric box is also installed in the return air box, and a touch panel electrically connected to the control electric box is installed on the front of the working area.

The aforementioned clean weighing room is characterized in that an ozone sterilizing lamp is also provided in the return air box.

The aforementioned clean weighing chamber is characterized in that a deflector is provided between the fan box and the air outlet box.

The aforementioned clean weighing chamber is characterized in that a second high-efficiency filter is provided below the air volume regulating valve, and a differential pressure gauge is connected to the air volume regulating valve.

The aforementioned clean weighing room is characterized in that: the upper part of the working area is also provided with LED lighting.

The beneficial effects of the utility model are: by using the vertical one-way airflow, through the high, medium and primary effect filters, the air supply and exhaust are free from residual dust, preventing secondary pollution; Circulation, and part of it is discharged to the nearby area, so that the working area generates negative pressure, which ensures that the dust in this area will not spread to the outside to a certain extent, and plays a role in protecting the external environment.

Description of drawings

Fig. 1 is the side view of the utility model clean room weighing room;

Fig. 2 is the front view of the utility model clean room weighing room;

Fig. 3 is a schematic diagram of module connection of the clean room weighing control system of the present invention.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings of the description.

As shown in Figures 1-2, a clean weighing room includes a work area 50, a return air box 20 and a fan box 30 are installed on one side of the work area 50, and an air outlet box 40 is installed above. A fan 32 is installed in the fan box 30 , an air volume regulating valve 41 is provided on the upper end of the air outlet box 40 , and a first high-efficiency filter 51 and a flow equalizing membrane 52 are arranged successively on the upper end of the working area 50 .

The air generated by the fan 32 enters the air outlet box 40 from the fan box 30, and about 10% of the air is discharged to the weighing room through the air volume regulating valve 41, and the remaining 90% of the air is filtered through the first high-efficiency filter 51 to achieve cleanliness. After meeting the temperature requirements, a uniform vertical air supply flow is formed through the flow equalizing film 52 to generate negative pressure in the working area, which ensures that the dust in this area will not spread to the outside to a certain extent, and plays a role in protecting the external environment.

A plurality of stainless steel punching workbenches 54 are included in the working area 50, and a primary effect filter 23 is arranged in the return air box body 20 corresponding to the position of the stainless steel punching workbench 54, and the primary effect filter 23 is A medium-efficiency filter 22 is also installed, and an ozone sterilizing lamp 24 is also provided in the return air box body 20 .

Before the return air flowing out from the working area 50 enters the return air box 20, it is pre-filtered by the primary effect filter 23, and the particles in the air flow are disposed of, and the pre-treated air passes through the intermediate effect filter 22 carry out secondary filtration, to play the effect of fully protecting the high-efficiency filter, eliminate the bacteria in the return air by the ozone sterilizing lamp 24.

A deflector 31 is also provided between the fan box body 30 and the air outlet box body 40 to facilitate the air generated by the fan to enter the air outlet box body 40 from the fan box body 30 .

A second high-efficiency filter 43 is also provided below the air volume regulating valve 41, and a differential pressure gauge 42 is also connected to the air volume regulating valve 41, and an LED illuminating lamp 52 is also provided on the top of the working area 50, and all of the entire weighing chamber The ground corner is designed with a circular arc surface, which is in line with the principle of air flow and fluidics.

A control electric box 21 is also installed in the return air box 20, and a touch panel 55 electrically connected to the control electric box 21 is installed on the front of the work area 50. The control electric box 21 includes a CPU control module, and the electric control module on the CPU control module The primary effect differential pressure sensor, the intermediate effect differential pressure sensor, and the high efficiency differential pressure sensor (not shown in the figure) installed on the primary effect filter 23, the medium effect filter 22, and the first high efficiency filter 51 respectively are connected, and the CPU The control module is also electrically connected with indoor static pressure sensor and air supply wind speed sensor, and CPU control module is also electrically connected with fan 32, LED lighting lamp 52, ozone sterilizing lamp 24, exhaust air valve actuator; CPU control module is connected with fan A frequency converter is connected between 32, and a relay is connected between the LED lighting lamp 52 and the ozone sterilizing lamp 24.

Control the start and stop and set the operating frequency through the touch screen panel 55, adjust the fan speed through the frequency converter, the operating status and operating frequency can be displayed on the screen, the fault alarm of the fan 32 is set on the screen, and the source of the fan failure signal is provided by the frequency converter. Fault signal of fan 32.

Differential pressure sensors are installed next to the high-efficiency, medium-efficiency, and primary-effect filters to display the differential pressure of the filter respectively, and the alarm point can be set respectively through the touch screen panel 55, and the alarm display is performed for the differential pressure value exceeding the set value.

The start and time setting value of the ozone sterilizing lamp 24 are controlled by the touch screen panel 55, and after the sterilizing lamp is started, the operating time reaches the set value and is automatically closed;

The wind speed is detected by the wind speed sensor and displayed on the screen, and it can also be used as a given basis for the frequency conversion frequency of the fan 32;

The indoor static pressure can be set on the touch screen panel 55, the indoor and outdoor pressure difference is measured by the indoor static pressure sensor, and the opening degree of the exhaust electric regulating valve is automatically controlled to ensure the indoor static pressure;

At the same time, the cumulative working time can also be calculated through the control system (a lithium battery is required to ensure that the data will not be lost in case of power failure).

To sum up, the clean weighing room provided by the utility model uses vertical unidirectional airflow to circulate part of the clean air in the working area, and partly discharges to the nearby area, so that the working area can generate negative pressure and prevent cross-contamination. Used to ensure a high cleanliness environment in the work area.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims (7)

1. cleaningization weighing room, it is characterized in that: comprise workspace (50), return air casing (20) is installed one side of described workspace (50) and fan box (30), top are equipped with air-out casing (40), blower fan (32) is installed in the described fan box (30), the upper end of described air-out casing (40) is provided with volume damper (41), and the upper end of described workspace (50) is provided with the first high efficiency particulate air filter (51) and current-sharing film (52) successively.

2. according to right 1 described cleaningization weighing room, it is characterized in that: include a plurality of stainless steel punch work platforms (54) in described workspace (50), be provided with roughing efficiency air filter (23) in the return air casing (20) corresponding with described stainless steel punch work platform (54) position, the outer medium effeciency filter (22) that also is equipped with of described roughing efficiency air filter (23).

3. cleaningization according to claim 1 and 2 weighing room, it is characterized in that: control electronic box (21) also is installed in the described return air casing (20), is installed in the front of described workspace (50) with the contact panel (55) of described control electronic box (21) electrical connection.

4. cleaningization according to claim 3 weighing room is characterized in that: also be provided with ozone sterilization lamp (24) in the described return air casing (20).

5. cleaningization according to claim 4 weighing room is characterized in that: also be provided with deflector (31) between described fan box (30) and the air-out casing (40).

6. cleaningization according to claim 5 weighing room is characterized in that: the below of described volume damper (41) also is provided with the second high efficiency particulate air filter (43), also is connected with a differential manometer (42) on the described volume damper (41).

7. cleaningization according to claim 6 weighing room is characterized in that: the top of described workspace (50) also is provided with LED illuminating lamp (52).

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