CN219376450U - Flow equalizing device in negative pressure weighing chamber - Google Patents

Abstract

The utility model discloses a flow equalizing device in a negative pressure weighing chamber, which comprises a flow equalizing inlet box, wherein a filter screen for filtering gas is arranged in the middle of the inner wall of the flow equalizing inlet box, a flow equalizing plate is arranged at the bottom of the flow equalizing inlet box, a cleaning mechanism for cleaning the filter screen is arranged in the middle of the front of the flow equalizing inlet box, the cleaning mechanism comprises a mounting shell, a screw rod, a machine box and a motor, the screw rod is rotatably connected in the mounting shell, the machine box is arranged in the machine box, one side of the mounting shell is fixedly connected with one side of the machine box, the output end of the motor is connected with one end of the screw rod, a sleeve is in threaded connection with the surface of the screw rod, a transverse rod is fixedly connected with the middle of the sleeve, and extends to the inside of the flow equalizing inlet box.

Description

Flow equalizing device in negative pressure weighing chamber

Technical Field

The utility model relates to the field of negative pressure weighing chambers, in particular to a flow equalizing device in a negative pressure weighing chamber.

Background

The negative pressure weighing chamber (negative pressure weighing platform) is a special local purifying device for places such as pharmacy, microbiological research and scientific experiments, and provides a vertical unidirectional air flow, part of clean air circulates in a working area and part of clean air is discharged to a nearby area, so that the working area generates negative pressure, cross contamination is prevented, and the device is used for ensuring the high-cleanliness environment of the working area.

The existing negative pressure weighing chamber can convey wind to a working area through a mode of a flow equalizing plate at an outlet of an air supply box, and then flow equalizing treatment is carried out on the wind, but impurities in some air can be accumulated on the flow equalizing plate in a long-term use process, and the accumulated impurities are more so that the flow equalizing plate can form blockage.

Disclosure of Invention

The utility model aims to provide a flow equalizing device in a negative pressure weighing chamber, which aims to solve the problems that in the prior art, wind is conveyed to a working area at an outlet of an air supply box through a flow equalizing plate in the negative pressure weighing chamber so as to perform flow equalizing treatment on the wind, but impurities in some air can be accumulated on the flow equalizing plate in a long-term use process, and the accumulated impurities are more so that the flow equalizing plate can be blocked.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a flow straightener in negative pressure weighing room, includes flow equalizing air inlet case, the aviation baffle is installed at the top of flow equalizing air inlet case inner wall, the air inlet has all been seted up to the both sides of aviation baffle, flow equalizing air inlet case inner wall's mid-mounting has the filter screen that is used for gaseous filtration, flow equalizing plate is installed to flow equalizing air inlet case's bottom, flow equalizing air inlet case positive mid-mounting has the clearance mechanism to clear up the filter screen, clearance mechanism includes the installation shell, rotates the lead screw, the machine box of connection in the installation shell inside and installs the motor in the machine box inside, just one side of installation shell and one side fixed connection of machine box, the output and the one end of lead screw of motor are connected, the surface threaded connection of lead screw has the sleeve, telescopic middle part fixedly connected with sideslip pole, the pole extends to the inside of flow equalizing air inlet case, the bottom of sideslip pole is equipped with the clearance brush.

As a preferable technical scheme of the utility model, the motor is electrically connected with an external power supply through an external switch, and the external switch is used for controlling the motor.

As a preferable technical scheme of the utility model, one end of the transverse moving rod, which is close to the sleeve, is in sliding connection with the front surface of the flow equalizing air inlet box, and one end of the transverse moving rod, which is far away from the sleeve, is in sliding connection with the back surface of the inner wall of the flow equalizing air inlet box.

As a preferable technical scheme of the utility model, the cleaning mechanism is arranged corresponding to the filter screen, the bottom of the cleaning brush is contacted with the surface of the filter screen, and the cleaning brush is used for brushing the surface and meshes of the filter screen.

As a preferable technical scheme of the utility model, the middle part of one side of the uniform flow air inlet box is provided with a cleaning opening which is convenient for discharging impurities, and the cleaning opening is correspondingly arranged at the top of one side of the filter screen.

As a preferable technical scheme of the utility model, the top parts of the two sides of the flow equalizing air inlet box are fixedly connected with fixing plates which are convenient for installation of the device, fixing screw holes are formed in the middle of the fixing plates, and the fixing plates and the fixing screw holes are used for fixing the flow equalizing air inlet box.

Compared with the prior art, the utility model has the beneficial effects that:

after the use apoplexy gets into the flow equalizing and advances bellows inside, filter the processing through filter screen, and discharge after flow equalizing through the board that flow equalizes, filter the preliminary treatment to wind earlier before flow equalizing to wind in the use, start the motor of clearance mechanism and can drive the lead screw rotation, the sleeve on surface is followed on the lead screw horizontal migration when the lead screw pivoted, make the cleaning brush of bottom can brush filter screen's surface when sideslip pole removes, thereby dust that will filter and pile up the top is swept and is cleared up, whole flow equalizing device has significantly reduced the accumulation of some impurity on the board that flow equalizes, thereby avoided the phenomenon that the board that flow equalizes is blockked up.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of the flow equalizing inlet box of the present utility model;

FIG. 3 is a cross-sectional block diagram of a cleaning mechanism of the present utility model;

fig. 4 is an enlarged structural view of the present utility model a.

In the figure: 1. flow equalization air inlet box; 2. a cleaning mechanism; 3. a fixing plate; 4. fixing the screw holes; 5. an air deflector; 6. an air inlet; 7. a filter screen; 8. a flow equalizing plate; 9. a cleaning port; 10. a mounting shell; 11. a screw rod; 12. a sleeve; 13. a traversing lever; 14. a machine box; 15. a motor; 16. and (5) cleaning the brush.

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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the utility model provides a flow equalizing device in a negative pressure weighing chamber, which comprises a flow equalizing air inlet box 1, wherein an air deflector 5 is arranged at the top of the inner wall of the flow equalizing air inlet box 1, air inlets 6 are formed in two sides of the air deflector 5, a filter screen 7 for filtering air is arranged in the middle of the inner wall of the flow equalizing air inlet box 1, a flow equalizing plate 8 is arranged at the bottom of the flow equalizing air inlet box 1, a cleaning mechanism 2 for cleaning the filter screen 7 is arranged in the middle of the front of the flow equalizing air inlet box 1, the cleaning mechanism 2 comprises a mounting shell 10, a screw rod 11, a machine box 14 and a motor 15, wherein the screw rod 11 is rotatably connected in the mounting shell 10, the machine box 14, and the motor 15 is rotatably connected in the machine box 14, one side of the mounting shell 14 is fixedly connected with one side of the machine box 14, the output end of the motor 15 is connected with one end of the screw rod 11, a sleeve 12 is in threaded connection with the surface of the screw rod 11, a transverse rod 13 is fixedly connected with the middle of the sleeve 12, the transverse rod 13 extends to the inner side of the flow equalizing air inlet box 1, a cleaning brush 16 is arranged at the bottom of the transverse rod 13, the transverse rod 15 can drive the screw rod 11 to rotate, and the cleaning brush 16 is arranged at the bottom of the transverse rod 13, the cleaning mechanism 2 in the embodiment, the motor 15 can drive the screw rod 11 to rotate, and the filter dust can be cleaned by the transverse brush along with the horizontal brush 11 and the horizontal brush on the surface of the surface 12.

Referring to fig. 1-4, a motor 15 is electrically connected with an external power supply through an external switch, one end of a traversing rod 13, which is close to a sleeve 12, is in sliding connection with the front surface of a flow equalizing inlet box 1, one end of the traversing rod 13, which is far away from the sleeve 12, is in sliding connection with the back surface of the inner wall of the flow equalizing inlet box 1, a cleaning mechanism 2 is correspondingly arranged with a filter screen 7, the bottom of a cleaning brush 16 is contacted with the surface of the filter screen 7, a cleaning opening 9 which is convenient for discharging impurities is formed in the middle of one side of the flow equalizing inlet box 1, the cleaning opening 9 is correspondingly arranged with the top of one side of the filter screen 7, fixing plates 3 which are convenient for installation are fixedly connected with the tops of the two sides of the flow equalizing inlet box 1, fixing screw holes 4 are formed in the middle of the fixing plates 3, in this embodiment, during use, the flow equalizing inlet box 1 is integrally installed at the air outlet of the air supplying box 1, after the air enters the flow equalizing inlet box 1, the air is guided through the air inlet 6, is subjected to filtering treatment through the filter screen 7, and discharged after the flow equalizing operation is performed through the equalizing plate 8.

When the flow equalizing device in the negative pressure weighing chamber is particularly used, the flow equalizing air inlet box 1 is integrally arranged at the air outlet of the air inlet box in the use process, the flow equalizing air inlet box 1 is correspondingly arranged with the air outlet of the air inlet box, after wind enters the air inlet box 1, the wind is filtered through the filter screen 7 and discharged after being equalized through the flow equalizing plate 8, in the use process, the wind is filtered and preprocessed before the wind is equalized, the accumulation of some impurities on the flow equalizing plate 8 is greatly reduced, the phenomenon of blocking of the flow equalizing plate 8 is avoided, the motor 15 of the cleaning mechanism 2 is started to drive the screw rod 11 to rotate, the sleeve 12 on the surface of the screw rod 11 moves horizontally, the cleaning brush 16 at the bottom can brush the surface of the filter screen 7 while the traversing rod 13 moves, so that dust accumulated above in the filtration process can be cleaned in a sweeping way, the blocking of the meshes is avoided, and the impurities can be cleaned out through the cleaning port 9, so that the negative pressure weighing device is very convenient to use.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (6)

1. The utility model provides a flow straightener in negative pressure weighing room, includes flow equalizing air inlet box (1), its characterized in that: the utility model provides a filter screen (7) that flow equalizes, flow equalizing inlet box (1) inner wall's top is installed aviation baffle (5), air inlet (6) have all been seted up to the both sides of aviation baffle (5), flow equalizing inlet box (1) inner wall's mid-mounting has filter screen (7) that are used for filtering gas, flow equalizing inlet box (1)'s bottom is installed and is flow equalizing plate (8), flow equalizing inlet box (1) positive mid-mounting has clearance mechanism (2) to clear up filter screen (7), clearance mechanism (2) including installation shell (10), rotation connection lead screw (11) in installation shell (10), box (14) and install motor (15) in the inside of box (14), just one side of installation shell (10) and one side fixed connection of box (14), the output of motor (15) is connected with one end of lead screw (11), the surface threaded connection of lead screw (11) has sleeve (12), the middle part fixed connection of sleeve (12) has sideslip pole (13), sideslip pole (13) extend to inside inlet box (1), the bottom of setting up brush (16).

2. The flow equalizer in a negative pressure weighing chamber of claim 1, wherein: the motor (15) is electrically connected with an external power supply through an external switch.

3. The flow equalizer in a negative pressure weighing chamber of claim 1, wherein: one end of the traversing rod (13) close to the sleeve (12) is in sliding connection with the front surface of the uniform flow air inlet box (1), and one end of the traversing rod (13) far away from the sleeve (12) is in sliding connection with the back surface of the inner wall of the uniform flow air inlet box (1).

4. The flow equalizer in a negative pressure weighing chamber of claim 1, wherein: the cleaning mechanism (2) is arranged corresponding to the filter screen (7), and the bottom of the cleaning brush (16) is contacted with the surface of the filter screen (7).

5. The flow equalizer in a negative pressure weighing chamber of claim 1, wherein: the middle part of flow equalizing inlet box (1) one side has offered the cleaning mouth (9) of being convenient for impurity discharge, and cleaning mouth (9) correspond the setting with the top of filter screen cloth (7) one side.

6. The flow equalizer in a negative pressure weighing chamber of claim 1, wherein: the top of flow equalizing air inlet box (1) both sides is all fixedly connected with fixed plate (3) convenient to device installation, fixed screw (4) have been seted up at the middle part of fixed plate (3).