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Negative pressure weighing cover convenient to change primary filter

A primary-effect filter that is easy to replace, applied in the field of weighing hoods, can solve problems such as difficult operation and heavy workload, and achieve good filtering effect

Inactive Publication Date: 2017-08-18
SUZHOU RUIDAJU AUTOMATIC EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when replacing the primary filter, it is necessary to remove other components first, which requires a lot of work and is not easy to operate

Method used

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  • Negative pressure weighing cover convenient to change primary filter
  • Negative pressure weighing cover convenient to change primary filter
  • Negative pressure weighing cover convenient to change primary filter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Examples, see e.g. Figure 1 to Figure 5 As shown, a negative pressure weighing hood that is convenient for replacing the primary filter includes a cabinet 1, and the cabinet 1 is provided with a working area 101, a fan area 102, a return air area 103, and an air outlet area 104. The fan Area 102 is positioned at the left side of work area 101 and is arranged at intervals, and described air return area 103 and air outlet area 104 are respectively positioned at the bottom and top of work area 101, and workbench 21 is arranged in described work area 101, and on workbench 21 There are through holes extending in the vertical direction, and a return window is provided on the side wall of the return air area 103, and the primary effect filter 3 and the intermediate effect filter 4 are arranged in the return air area 103, and the primary effect filter 3 is located between the workbench 21 and the medium-efficiency filter 4, the bottom of the fan area 102 is provided with a fan...

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Abstract

The present invention discloses a negative pressure weighing cover convenient to change a primary filter. The cover comprises a cabinet which is internally provided with a work area, a fan area, an air return area and an air-out area, the air return area is internally provided with a primary filter consisting of a rectangular pedestal sleeved in a rectangular notch, the rectangular pedestal is internally provided with a holder, the upper portion and the lower portion of the holder are provided with fiber cloth layers, a filtering cavity is formed among the holder, the upper fiber cloth layer and the lower fiber cloth layer, the filtering cavity is filled with activated carbon, the left side and the right side of the lower end of the rectangular pedestal are respectively pressed at a first support and a second support which are slidingly connected in the rectangular notch, the first support and the second support are provided with a sidesway climbing mechanism, a settling tank is formed at the right side of the rectangular notch and is internally provided with a cover plate, and the left side wall of the cover plate is pressed at the right side wall of the rectangular pedestal. The negative pressure weighing cover convenient to change a primary filter can simplify and conveniently change a primary filter and has a good filtering effect.

Description

[0001] Technical field: [0002] The invention relates to the technical field of purification, in particular to a weighing cover. [0003] Background technique: [0004] Layer weighing hood is a special local purification equipment used in pharmaceutical, microbial research and scientific experiments, etc. It provides a unidirectional airflow, part of the clean air circulates in the working area, and part of it is discharged to the nearby area, so that the working area generates Negative pressure to prevent cross-contamination, used to ensure a high cleanliness environment in the work area. [0005] The invention patent document with the authorized announcement number CN203672473U discloses a negative pressure weighing cover, which includes a chassis, a primary filter, a medium filter, a high efficiency filter, a flow equalizing membrane, a static pressure box, a fan, and a return window , adjusting windows and hoses, the chassis has a working area, a fan area, a return air ar...

Claims

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Application Information

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IPC IPC(8): G01G21/28B01D46/30B01D46/00
CPCB01D46/0012B01D46/30G01G21/28B01D46/88
Inventor 胡虎
Owner SUZHOU RUIDAJU AUTOMATIC EQUIP CO LTD
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