CN216281798U

CN216281798U - Negative pressure weighing chamber

Info

Publication number: CN216281798U
Application number: CN202122507929.1U
Authority: CN
Inventors: 申彦军; 张健红; 沈刚; 李胜立
Original assignee: Wuxi Hengyi Health Technology Co ltd
Current assignee: Wuxi Hengyi Health Technology Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-04-12
Anticipated expiration: 2031-10-18

Abstract

The utility model relates to the technical field of air purification, in particular to a negative pressure weighing chamber. The frame has, the frame top is provided with the top ventilation district, and the anterior below is provided with weighs the workspace, it is provided with vertical ventilation district to weigh workspace rear, top ventilation district front and back end symmetry is provided with the external filtration ventilation subassembly of two sets of intercommunications, it is provided with two laminar flow filtration air guide component side by side around the workspace top to weigh, filtration subassembly and weighing workspace intercommunication are passed through to vertical ventilation district bottom, filtration subassembly the place ahead still is provided with a steam filter screen. The utility model can replenish clean fresh air, ensure the dryness of the circulating air and reduce the influence of the humidity in the air on the materials. The temperature in the weighing working area can be effectively controlled, and the temperature of the airflow is ensured to be maintained in a temperature range suitable for the production requirement of various medicines.

Description

Negative pressure weighing chamber

Technical Field

The utility model relates to the technical field of air purification, in particular to a negative pressure weighing chamber.

Background

The negative pressure weighing room is a special local purifying device for pharmaceutical, microbiological research, scientific experiment and other places, and provides a vertical one-way airflow. Part of the clean air circulates in the working area and part of the clean air is discharged to the nearby area, so that negative pressure is generated in the working area. The dust and reagent weighing and split charging are carried out in the equipment, the dust and reagent can be controlled to overflow and rise, the suction harm of the dust and the reagent to human bodies is prevented, the cross contamination of the dust and the reagent can be avoided, and the safety of the external environment and indoor personnel is protected.

However, the existing negative pressure weighing chamber is high in internal temperature along with continuous work of working elements around, and is not beneficial to long-time work of operators. And when the environment humidity is higher, the air with humidity is exhaled by the operating personnel, and the adverse effect is brought to the operated product. And the air with impurities outside the room can be brought into the room together without a special air inlet.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a negative pressure weighing chamber.

The technical scheme for realizing the purpose of the utility model is as follows: the utility model provides a room is weighed to negative pressure, has the frame, the frame top is provided with the top ventilation district, and the anterior below is provided with weighs the workspace, it is provided with vertical ventilation district to weigh workspace rear, the end symmetry is provided with the external filtration ventilation subassembly of two sets of intercommunications around the top ventilation district, it filters wind-guiding component to be provided with two laminar flows around the workspace top to weigh side by side, the filtration subassembly is passed through to vertical ventilation district bottom and weighs the workspace intercommunication, filtration subassembly the place ahead still is provided with a steam filter screen.

Further, a heat exchange box is arranged between the top end ventilation area and the vertical ventilation area and connected with the compressor.

Furthermore, the filtering and ventilating assembly comprises a filter and a fan, the filter is fixedly arranged on the inner wall of the top end ventilating area, and the fan is fixedly arranged on the other side of the filter.

Furthermore, the laminar flow filtering and air guiding assembly comprises a laminar flow fan and a laminar flow filter which are sequentially arranged from top to bottom.

Furthermore, the filtering component comprises a primary filter and a secondary filter which are sequentially arranged from front to back.

After the technical scheme is adopted, the utility model has the following positive effects:

(1) the utility model can replenish clean fresh air, ensure the dryness of the circulating air and reduce the influence of the humidity in the air on the materials.

(2) The utility model can effectively control the temperature in the weighing working area and ensure that the temperature of the airflow is maintained in the temperature range required by the production of various medicines.

Drawings

In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the present disclosure taken in conjunction with the accompanying drawings, in which

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a partially enlarged view of fig. 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 2, the utility model has a frame 1, a top end ventilation area 2 is arranged at the top end of the frame 1, a weighing working area 3 is arranged below the front part of the frame, a vertical ventilation area 4 is arranged behind the weighing working area 3, two groups of filtering and ventilating assemblies 5 communicated with the outside are symmetrically arranged at the front end and the rear end of the top end ventilation area 2, each filtering and ventilating assembly 5 comprises a filter 51 and a fan 52, the filter 51 is fixedly arranged on the inner wall of the top end ventilation area 2, and the fan 52 is fixedly arranged at the other side of the filter 51. Weigh workspace 3 top front and back and be provided with two laminar flow filtration wind guide component 6 side by side, laminar flow filtration wind guide component 6 includes laminar flow fan 61 and the laminar flow filter 62 that from the top down set gradually. The bottom end of the vertical ventilation area 4 is communicated with the weighing working area 3 through a filtering component 7, and a water vapor filter screen 8 is further arranged in front of the filtering component 7. The filter assembly 7 includes a primary filter 71 and a secondary filter 72 arranged in this order from front to back. A heat exchange box 9 is arranged between the top ventilation area 2 and the vertical ventilation area 4, and the heat exchange box 9 is connected with a compressor 10. An air speed sensor 11 for measuring the air speed is also arranged below the laminar flow filtering and air guiding assembly 6. So that the wind speed reaches reasonable requirements. An operation table 12 is arranged in the weighing working area 3. The top end of the weighing working area 3 is also provided with an illuminating lamp 13. An access hole is also reserved outside the filtering and ventilating assembly 5.

The air supplements the suction through the 5 supplementary suction of the filtration ventilation subassembly of 2 rear ends in top ventilation district, after adjusting the temperature through heat exchange box 9, in the leading-in weighing workspace 3 of laminar flow filtration wind guide assembly 6, some air passes through the 5 discharge of the filtration ventilation subassembly of 2 front ends in top ventilation district, the air of weighing workspace 3 passes through in steam filter screen 8 and filter assembly 7 filters steam and impurity and sends into vertical ventilation district 4, and the circulation is accomplished after 9 thermoregulation of rethread heat exchange box.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A negative pressure weighing chamber, its characterized in that: frame (1) has, frame (1) top is provided with top ventilation district (2), and the anterior below is provided with weighs workspace (3), it is provided with vertical ventilation district (4) to weigh workspace (3) rear, top ventilation district (2) front and back end symmetry is provided with two sets of external filtration ventilation subassembly (5) of intercommunication, it filters wind-guiding component (6) to be provided with two laminar flows around weighing workspace (3) top side by side, filtering component (7) and weighing workspace (3) intercommunication are passed through to vertical ventilation district (4) bottom, filtering component (7) the place ahead still is provided with one steam filter screen (8).

2. The negative pressure weighing chamber of claim 1, wherein: a heat exchange box (9) is arranged between the top ventilation area (2) and the vertical ventilation area (4), and the heat exchange box (9) is connected with a compressor (10).

3. The negative pressure weighing chamber of claim 1, wherein: the filtering and ventilating assembly (5) comprises a filter (51) and a fan (52), the filter (51) is fixedly arranged on the inner wall of the top end ventilating area (2), and the fan (52) is fixedly arranged on the other side of the filter (51).

4. The negative pressure weighing chamber of claim 1, wherein: the laminar flow filtering and air guiding assembly (6) comprises a laminar flow fan (61) and a laminar flow filter (62) which are sequentially arranged from top to bottom.

5. The negative pressure weighing chamber of claim 1, wherein: the filtering component (7) comprises a primary filter (71) and a middle filter (72) which are arranged from front to back in sequence.