CN219532254U

CN219532254U - Negative pressure weighing cover

Info

Publication number: CN219532254U
Application number: CN202223440396.0U
Authority: CN
Inventors: 宋彦凌
Original assignee: Amines Suzhou Biotechnology Co ltd
Current assignee: Amines Suzhou Biotechnology Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-08-15
Anticipated expiration: 2032-12-22

Abstract

The utility model belongs to the technical field of weighing systems, in particular to a negative pressure weighing cover, which comprises a filtering mechanism, a buffering and damping mechanism and a sound insulation and noise reduction mechanism, wherein the filtering mechanism comprises a case, an air outlet box body, an air return box body, a fan box body and a working area are arranged in the case, a primary filter and a middle filter are arranged at the top of the air return box body, an air return window is arranged on one side of the air return box body, a screen and an adsorption module are arranged in the air return window at equal intervals, the buffering and damping mechanism comprises a buffer plate adhered to the bottom of the case, a spring damper fixedly connected with four corners of the bottom of the buffer plate and a bottom plate welded at the bottom of the spring damper, and the sound insulation and noise reduction mechanism comprises a sound insulation module, a hollow interlayer on one side of the sound insulation module and a fiber board layer on one side of the hollow interlayer which are arranged in equal intervals in the case. The utility model greatly increases the practicability, the screen mesh and the adsorption module can prevent external dust particles and water from entering the negative pressure weighing cover, and the chassis has good sound insulation and noise reduction functions.

Description

Negative pressure weighing cover

Technical Field

The utility model relates to the technical field of weighing systems, in particular to a negative pressure weighing cover.

Background

The weighing cover is an open room special for places such as pharmacy, microbiological research, scientific experiments and the like and is used for weighing and split charging dust and reagents; the vertical unidirectional air flow is provided, part of clean air circulates in a working area and is partially discharged to a nearby area, so that negative pressure is generated in the working area, cross contamination is prevented, the vertical unidirectional air flow is used for ensuring the high-cleanliness environment of the working area, and the vertical unidirectional air flow is special local purifying equipment for places such as pharmacy, microbiological research and scientific experiments.

The existing weighing cover has the following defects or shortcomings:

1. the exhausted gas cannot be well filtered and purified, so that the exhausted gas is easy to cause adverse effect on the environment;

2. the circulating gas cannot be filtered again, and the cleanliness of the air in the weighing cover cannot be guaranteed;

3. because the fans and other devices in the weighing cover can generate certain noise during operation, the external working environment is influenced.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides a negative pressure weighing cover, wherein a fan is arranged in a regulating window, a gear regulating switch is arranged at the top of the fan, and the gear of the fan determines the air exhaust amount, so that the weighing requirements of different works and different objects can be met, the universality is greatly improved, a screen and an adsorption module are equidistantly arranged in a return air window, the screen and the adsorption module can not only prevent external dust particles from entering the negative pressure weighing cover, but also prevent water from entering the negative pressure weighing cover, and a chassis sequentially comprises a hollow layer, a soundproof cotton layer and a glass fiber board layer from outside to inside, and the chassis has a good soundproof noise reduction function by combining the hollow interlayer.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the negative pressure weighing cover comprises a filtering mechanism, a buffering and damping mechanism and a sound insulation and noise reduction mechanism, wherein the filtering mechanism comprises a case, an air outlet box body, an air return box body, a fan box body and a working area are arranged in the case, a primary filter and a secondary filter are arranged at the top of the air return box body, an air return window is arranged on one side of the air return box body, and a screen and an adsorption module are arranged in the air return window at equal intervals;

the buffering and damping mechanism comprises a buffering plate adhered to the bottom of the chassis, a spring damper fixedly connected with four corners of the bottom of the buffering plate and a bottom plate welded at the bottom of the spring damper;

the sound insulation and noise reduction mechanism comprises a sound insulation module, a hollow interlayer on one side of the sound insulation module and a fiberboard layer on one side of the hollow interlayer, wherein the sound insulation module and the hollow interlayer are arranged in the chassis at equal intervals.

Preferably, the air outlet box body is arranged above the working area and the air blower box body, the air return box body is arranged right below the working area, and the air blower box body and the working area are respectively arranged at left and right intervals.

Preferably, the fan bottom of the fan box portion is provided with a fan, an air inlet end of the fan is communicated with an air return box body, a static pressure box is arranged in an air outlet box body and is communicated with an air outlet end of the fan through a hose, a high-grade filter is arranged at the right end of the static pressure box, an adjusting window is arranged on one side of the high-grade filter, a fan is arranged in the adjusting window, and a switch for adjusting the gear of the fan is arranged at the top of the adjusting window.

Preferably, the primary filter is arranged at the upper end of the advanced filter, and the interiors of the primary filter and the intermediate filter are filled with activated carbon.

Preferably, the adsorption module is activated carbon adsorption cotton block, the sound insulation module is sound insulation cotton, the fiberboard layer is a glass fiberboard, and the sound insulation module, the hollow interlayer and the fiberboard layer are sequentially arranged from outside to inside.

Preferably, universal wheels are arranged at four corners of the bottom plate, and a handle is arranged at the top of one side of the bottom plate.

The beneficial effects of the utility model are as follows:

1. a fan is arranged in the adjusting window, a gear adjusting switch is arranged at the top of the fan, and the gear of the fan determines the exhaust amount, so that the weighing requirements of different works and different articles can be met, and the universality is greatly improved;

2. the screen cloth and the adsorption module are arranged in the return air window at equal intervals, so that external dust particles can be prevented from entering the negative pressure weighing cover by the screen cloth and the adsorption module, and water can be prevented from entering the negative pressure weighing cover;

3. the machine case sequentially comprises a hollow interlayer, a sound insulation cotton layer and a glass fiber board layer from outside to inside, and the sound insulation cotton of the sound insulation cotton layer and the physical characteristics of the glass fiber board layer are combined with the hollow interlayer, so that the machine case has good sound insulation and noise reduction functions, and meanwhile, the buffer damping mechanism is arranged, so that the effect of buffering and damping is achieved when the fan is operated, and the purpose of noise reduction is achieved.

Drawings

FIG. 1 is a three-dimensional front view of a negative pressure weighing hood according to the present utility model;

FIG. 2 is a front cross-sectional view of the whole structure of a negative pressure weighing cover according to the present utility model;

FIG. 3 is a schematic view of a negative pressure weighing hood with a partially enlarged return air window;

fig. 4 is a partial enlarged view of a sound insulation and noise reduction mechanism of a negative pressure weighing cover.

In the figure: 1. a chassis; 2. a wind outlet box body; 3. a return air box body; 4. the fan box body; 5. a working area; 6. a primary filter; 7. a medium-grade filter; 8. a return air window; 9. a screen; 10. an adsorption module; 11. a buffer plate; 12. a spring damper; 13. a bottom plate; 14. a sound insulation module; 15. a hollow interlayer; 16. a fiberboard layer; 17. a blower; 18. a static pressure box; 19. a high-grade filter; 20. adjusting the window; 21. a fan.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Embodiment 1, refer to fig. 1-4, a negative pressure weighing cover, including filtering mechanism, buffering damper and mechanism of making an uproar falls in giving sound insulation, filtering mechanism includes quick-witted case 1, quick-witted case 1 inside is provided with out bellows 2, back bellows 3, fan case 4 and workspace 5, back bellows 3 top is provided with primary filter 6 and well level filter 7, back bellows 3 one side is provided with return air window 8, equidistance is provided with screen cloth 9 and adsorption module 10 in the return air window 8, adsorption module 10 is the cotton piece of active carbon absorption, not only can block external dust particle and get into negative pressure weighing cover, can also prevent that water from getting into negative pressure weighing cover inside, out bellows 2 sets up in the top of workspace 5 and fan case 4, back bellows 3 sets up in the direct under the workspace 5, fan case 4 and workspace 5 are left and right sides interval setting respectively, fan 17 are equipped with to fan case 4 bottom, the air inlet end and the back bellows 3 of fan 17 are linked together, back bellows 3 inside is provided with static pressure case 18, static pressure case 18 is linked together with fan 17 air outlet end through the hose, the static pressure case 18 right-hand member is equipped with high level filter 19, well level filter 19 is equipped with well level filter 19, the level filter 21 is equipped with well level filter 21 and well level filter 21 is not set up in the big or 20, thereby the level is not satisfied, the level of the general purpose filter is large and the level is not set up to be adjusted to the primary level 20, the level is different, the level of the filter is set up with the level 20, and the level of the filter is not satisfied, and the level of the filter is 20 is adjusted.

Example 2, with reference to fig. 1-4, this example is optimized on the basis of example 1, specifically:

the buffering damping mechanism comprises a buffering plate 11 adhered to the bottom of the chassis 1, a spring damper 12 fixedly connected with four corners of the bottom of the buffering plate 11 and a bottom plate 13 welded to the bottom of the spring damper 12, so that when a fan 17 runs, the buffering damping effect is achieved, the purpose of noise reduction is achieved, universal wheels are mounted at four corners of the bottom plate 13, a handle is arranged at the top of one side of the bottom plate 13, the noise-insulation and noise-reduction mechanism comprises a noise-insulation module 14 arranged inside the chassis 1 at equal intervals, a hollow interlayer 15 on one side of the noise-insulation module 14 and a fiberboard layer 16 on one side of the hollow interlayer 15, the noise-insulation module 14 is made of noise-insulation cotton, the fiberboard layer 16 is made of glass fiber boards, and the noise-insulation module 14, the hollow interlayer 15 and the fiberboard layer 16 are sequentially arranged from outside to inside, so that the chassis 1 has good noise-insulation and noise-reduction functions.

Working principle: firstly, each parameter is set through a touch control screen on the outer wall of the case 1, then, a negative pressure weighing cover is started, air in a working area 5 firstly passes through a primary filter 6 and a secondary filter 7 to be purified, then enters the inside of an air outlet box body 2 through a fan 17, most of the air enters the working area 5 in a vertical laminar flow mode, the other part of the air is discharged through a static pressure box 18 and a high-level filter 19, a fan 21 is arranged in an adjusting window 20, a switch for adjusting the gear of the fan 21 is arranged at the top of the adjusting window 20, the gear of the fan 21 determines the size of the air exhaust amount, thus, the requirements of weighing different works and different articles can be met, the universality is greatly improved, and the sound insulation cotton of a sound insulation module 14 and the physical characteristics of a glass fiber board of a fiber board layer 16 are combined with a hollow interlayer 15, so that the case 1 has a good sound insulation function.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The negative pressure weighing cover comprises a filtering mechanism, a buffering and damping mechanism and a sound insulation and noise reduction mechanism, and is characterized in that the filtering mechanism comprises a case (1), an air outlet box body (2), an air return box body (3), a fan box body (4) and a working area (5) are arranged in the case (1), a primary filter (6) and a middle filter (7) are arranged at the top of the air return box body (3), an air return window (8) is arranged on one side of the air return box body (3), and a screen (9) and an adsorption module (10) are arranged in the air return window (8) at equal intervals;

the buffering and damping mechanism comprises a buffering plate (11) adhered to the bottom of the chassis (1), a spring damper (12) fixedly connected with four corners of the bottom of the buffering plate (11) and a bottom plate (13) welded at the bottom of the spring damper (12);

the sound insulation and noise reduction mechanism comprises a sound insulation module (14) which is arranged inside the chassis (1) at equal intervals, a hollow interlayer (15) on one side of the sound insulation module (14) and a fiberboard layer (16) on one side of the hollow interlayer (15).

2. The negative pressure weighing cover according to claim 1, wherein the air outlet box body (2) is arranged above the working area (5) and the air blower box body (4), the air return box body (3) is arranged right below the working area (5), and the air blower box body (4) and the working area (5) are respectively arranged at left and right intervals.

3. The negative pressure weighing cover according to claim 1, characterized in that a fan (17) is arranged at the bottom of the fan box body (4), an air inlet end of the fan (17) is communicated with the air return box body (3), a static pressure box (18) is arranged in the air outlet box body (2), the static pressure box (18) is communicated with the air outlet end of the fan (17) through a hose, an advanced filter (19) is arranged at the right end of the static pressure box (18), an adjusting window (20) is arranged on one side of the advanced filter (19), a fan (21) is arranged in the adjusting window (20), and a switch for adjusting the gear of the fan (21) is arranged at the top of the adjusting window (20).

4. A negative pressure weighing hood according to claim 1, characterized in that the primary filter (6) is arranged at the upper end of the intermediate filter (7), and that both the primary filter (6) and the intermediate filter (7) are filled with activated carbon.

5. The negative pressure weighing cover according to claim 1, wherein the adsorption module (10) is an activated carbon adsorption cotton block, the sound insulation module (14) is sound insulation cotton, the fiberboard layer (16) is a glass fiberboard, and the sound insulation module (14), the hollow interlayer (15) and the fiberboard layer (16) are sequentially arranged from outside to inside.

6. A negative pressure weighing cover according to claim 1, characterized in that universal wheels are arranged at four corners of the bottom plate (13), and a handle is arranged at the top of one side of the bottom plate (13).