CN219378367U

CN219378367U - Negative pressure weighing chamber capable of self-cleaning

Info

Publication number: CN219378367U
Application number: CN202320808390.XU
Authority: CN
Inventors: 王贞; 孙文家; 孙小响
Original assignee: Suzhou Maisile Machinery Device Co ltd
Current assignee: Suzhou Maisile Machinery Device Co ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-07-21
Anticipated expiration: 2033-04-13

Abstract

The utility model discloses a self-cleaning negative pressure weighing chamber which comprises a weighing box, wherein a self-cleaning mechanism is fixedly connected to the bottom of an inner cavity of a hollow cavity, a connecting mechanism is fixedly connected to one side of the inner cavity of the hollow cavity, a partition plate is fixedly connected to the middle part of the inner cavity of the hollow cavity, a suction fan is fixedly arranged at the top of the partition plate, an air collecting cavity is arranged at one side of the top of the weighing box, the self-cleaning mechanism comprises an ultrasonic cleaner, a waterproof box is fixedly connected to one side of the inner cavity of the ultrasonic cleaner, the tops of two rotating shafts are respectively and fixedly connected with two ends of the bottom of a primary filter screen, a clamping ring is fixedly connected to one side of the primary filter screen, the connecting mechanism comprises a base ring, a sealing air bag is fixedly connected to the inner wall of the base ring, and an air pump and an electric air release valve are respectively and fixedly arranged at two ends of one side of the sealing air bag.

Description

Negative pressure weighing chamber capable of self-cleaning

Technical Field

The utility model relates to the technical field of negative pressure weighing chambers, in particular to a self-cleaning negative pressure weighing chamber.

Background

The negative pressure weighing chamber 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 primary filter screen of the existing negative pressure weighing chamber is used for carrying out the first filtration, so that certain impurities are easy to generate after the primary filter screen is used, and self-cleaning cannot be well carried out, and therefore the negative pressure weighing chamber capable of self-cleaning is provided.

Disclosure of Invention

The utility model aims to provide a self-cleaning negative pressure weighing chamber, which solves the problems that the prior negative pressure weighing chamber provided in the background art is easy to generate certain impurities after being used and cannot be self-cleaned well because a primary filter screen bears the first filtering.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a but self-cleaning negative pressure weighing chamber, includes the weighing box, the cavity has been seted up to one side of weighing box, the bottom fixedly connected with self-cleaning mechanism of cavity inner chamber, one side fixedly connected with coupling mechanism of cavity inner chamber, the middle part fixedly connected with baffle of cavity inner chamber, the top fixed mounting of baffle has the suction fan, the gas collection chamber has been seted up to one side at weighing box top, self-cleaning mechanism includes ultrasonic cleaner, one side fixedly connected with waterproof box of ultrasonic cleaner inner chamber, the inside fixed mounting of waterproof box has the biax motor, two equal fixedly connected with axis of rotation of output of biax motor, the one end fixedly connected with dwang of axis of rotation, two the top of dwang respectively with the both ends fixedly connected with of primary filter screen bottom, one side fixedly connected with snap ring of primary filter screen, coupling mechanism includes the base ring, the inner wall fixedly connected with sealed gasbag of base ring, the both ends of sealed gasbag one side are fixedly mounted with air pump and electronic bleeder valve respectively.

Preferably, a side filter screen is clamped at one side of the inner cavity of the gas collection cavity, and a bottom filter screen is clamped at the bottom of the inner cavity of the gas collection cavity and used for carrying out secondary filtration and discharge on gas.

Preferably, the output end of the suction fan is fixedly communicated with a communicating pipe, and one end of the communicating pipe is fixedly communicated with the inner cavity of the gas collecting cavity for communicating gas.

Preferably, a plurality of blocking curtains are fixedly connected to the top of one side of the weighing box, which is far away from the connecting mechanism, and the blocking curtains are made of transparent PVC materials.

Preferably, one end of the clamping ring penetrates into the inner cavity of the connecting mechanism, and the surface of the sealing air bag is in contact with the surface of the clamping ring and is used for sealing and installing the primary filter screen.

Preferably, the positive top fixed mounting of weighing box has switch panel, just suction fan, ultrasonic cleaner, biax motor, air pump and electronic bleeder all carry out on-off control to suction fan, ultrasonic cleaner, biax motor, air pump and electronic bleeder through switch panel and external power source electric connection.

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

the inner cavity of the sealing air bag is deflated through the electric air release valve, so that the clamping state of the sealing air bag to the clamping ring is relaxed, the double-shaft motor is utilized to drive the rotation shaft, the primary filter screen and the clamping ring to rotate, the clamping ring is separated from the connecting mechanism, the primary filter screen rotates to the inner cavity of the ultrasonic cleaner to be soaked by cleaning liquid, then the ultrasonic cleaner is opened, the primary filter screen is cleaned by utilizing ultrasonic waves, and the filtering efficiency of the primary filter screen is improved.

Drawings

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

FIG. 2 is a side cross-sectional view of the present utility model;

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

FIG. 4 is a cross-sectional view of the attachment mechanism of the present utility model;

fig. 5 is a cross-sectional view of the waterproof case of the present utility model.

In the figure: 1. weighing box; 2. a hollow cavity; 3. a self-cleaning mechanism; 4. a connecting mechanism; 5. a partition plate; 6. a suction fan; 7. an air collection cavity; 8. a side filter screen; 9. a bottom filter screen; 10. a curtain; 11. an ultrasonic cleaner; 12. a waterproof box; 13. a biaxial motor; 14. a rotating shaft; 15. a rotating lever; 16. a primary filter screen; 17. a clasp; 18. a base ring; 19. sealing the air bag; 20. an air pump; 21. an electric air release valve; 22. a communicating pipe; 23. and a switch panel.

Description of the embodiments

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. 1-5, the utility model provides a self-cleaning negative pressure weighing chamber, which comprises a weighing box 1, wherein one side of the weighing box 1 is provided with a hollow cavity 2, the bottom of the inner cavity of the hollow cavity 2 is fixedly connected with a self-cleaning mechanism 3, one side of the inner cavity of the hollow cavity 2 is fixedly connected with a connecting mechanism 4, the middle part of the inner cavity of the hollow cavity 2 is fixedly connected with a baffle plate 5, the top of the baffle plate 5 is fixedly provided with a suction fan 6, one side of the top of the weighing box 1 is provided with an air collecting cavity 7, the self-cleaning mechanism 3 comprises an ultrasonic cleaning machine 11, one side of the inner cavity of the ultrasonic cleaning machine 11 is fixedly connected with a waterproof box 12, the inside of the waterproof box 12 is fixedly provided with a double-shaft motor 13, two output ends of the double-shaft motor 13 are fixedly connected with rotating shafts 14, one end of each rotating shaft 14 is fixedly connected with rotating rods 15, the tops of the two rotating rods 15 are respectively fixedly connected with two ends of the bottom of a primary filter screen 16, one side of the primary filter screen 16 is fixedly connected with a clamping ring 17, the connecting mechanism 4 comprises a base ring 18, the inner wall of the base ring 18 is fixedly connected with a sealing air bag 19, two ends of one side of the sealing air bag 19 are respectively fixedly provided with an air pump 20 and an electric release valve 21; firstly, the weighing device is placed between the connecting mechanism 4 and the baffle curtain 10 for weighing, at the moment, the suction fan 6 is turned on, dust generated in the weighing process is adsorbed to the vicinity of the connecting mechanism 4 through the suction fan 6 for primary filtration, air after primary filtration enters the inner cavity of the air collection cavity 7 through the communicating pipe 22, a part of air is filtered and discharged through the side filter screen 8, and a part of air flows into the space between the connecting mechanism 4 and the baffle curtain 10 through the bottom filter screen 9 to form a negative pressure state.

Referring to fig. 1-5, further, a side filter screen 8 is clamped at one side of the inner cavity of the air collection cavity 7, a bottom filter screen 9 is clamped at the bottom of the inner cavity of the air collection cavity 7, air after primary filtration enters the inner cavity of the air collection cavity 7 through a communicating pipe 22, a part of air is filtered and discharged through the side filter screen 8, and a part of air flows into a space between the connecting mechanism 4 and the baffle curtain 10 through the bottom filter screen 9 to form a negative pressure state.

Referring to fig. 1-5, further, the output end of the suction fan 6 is fixedly connected with a communicating pipe 22, one end of the communicating pipe 22 is fixedly connected with the inner cavity of the air collection cavity 7, and the communicating pipe 22 is used for communicating air.

Referring to fig. 1-5, further, a plurality of blocking curtains 10 are fixedly connected to the top of one side of the weighing box 1 far away from the connecting mechanism 4 at equal intervals, and the blocking curtains 10 are made of transparent PVC materials, so that the connecting mechanism 4 and the blocking curtains 10 are shielded, and dust diffusion is prevented.

Referring to fig. 1-5, further, one end of the clasp 17 penetrates into the inner cavity of the connecting mechanism 4, and the surface of the sealing air bag 19 is contacted with the surface of the clasp 17, and the clasp 17 is tightly attached to the surface of the sealing air bag 19 by inflating the inner cavity of the sealing air bag 19 through the air pump 20 after the clasp 17 is contacted with the surface of the sealing air bag 19, so that the primary filter screen 16 is installed in a sealing way.

Referring to fig. 1-5, further, a switch panel 23 is fixedly installed at the top of the front face of the weighing box 1, and the suction fan 6, the ultrasonic cleaner 11, the double-shaft motor 13, the air pump 20 and the electric air release valve 21 are all electrically connected with an external power supply through the switch panel 23, so as to perform switch control on and off on the suction fan 6, the ultrasonic cleaner 11, the double-shaft motor 13, the air pump 20 and the electric air release valve 21.

When the device is specifically used, firstly, the weighing device is placed between the connecting mechanism 4 and the baffle curtain 10 to weigh, at the moment, the suction fan 6 is opened, dust generated in the weighing process is adsorbed to the vicinity of the connecting mechanism 4 through the suction fan 6 to perform primary filtration, air after primary filtration enters the inner cavity of the air collection cavity 7 through the communicating pipe 22, a part of air is filtered and discharged through the side filter screen 8, a part of air flows into the space between the connecting mechanism 4 and the baffle curtain 10 through the bottom filter screen 9 to form a negative pressure state, when the primary filter screen 16 is required to be cleaned in a long-time use, the electric air release valve 21 is opened to release the inner cavity of the sealing air bag 19, so that the clamping state of the sealing air bag 19 to the clamping ring 17 is released, then the rotation of the double-shaft motor 13 is controlled, the rotation of the double-shaft motor 13 drives the rotation of the rotation shaft 14, the rotation of the primary filter screen 16 and the clamping ring 17 is separated from the connecting mechanism 4, the primary filter screen 16 rotates to the inner cavity of the ultrasonic cleaner 11 to be soaked by cleaning liquid, and then the ultrasonic cleaner 11 is opened to clean the primary filter screen 16, and the filtering efficiency of the primary filter screen 16 is improved.

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

1. The utility model provides a but self-cleaning negative pressure weighing chamber, includes weighing box (1), its characterized in that: the utility model discloses a self-cleaning device for the air bag, which comprises a weighing box (1), wherein a hollow cavity (2) is formed in one side of the weighing box (1), a self-cleaning mechanism (3) is fixedly connected to the bottom of the inner cavity of the hollow cavity (2), a connecting mechanism (4) is fixedly connected to one side of the inner cavity of the hollow cavity (2), a partition plate (5) is fixedly connected to the middle part of the inner cavity of the hollow cavity (2), a suction fan (6) is fixedly arranged at the top of the partition plate (5), an air collecting cavity (7) is formed in one side of the top of the weighing box (1), the self-cleaning mechanism (3) comprises an ultrasonic cleaner (11), a waterproof box (12) is fixedly connected to one side of the inner cavity of the ultrasonic cleaner (11), a double-shaft motor (13) is fixedly arranged in the inner side of the waterproof box (12), two output ends of the double-shaft motor (13) are fixedly connected with rotating shafts (14), one end of each rotating shaft (14) is fixedly connected with rotating rods (15), the tops of the two rotating rods (15) are respectively fixedly connected with two ends of the bottom of a primary filter screen (16), one side of the primary (16) is fixedly connected with a base ring (18), the connecting mechanism (4) comprises a base ring (18), a sealing ring (19), an air pump (20) and an electric air release valve (21) are respectively and fixedly arranged at two ends of one side of the sealing air bag (19).

2. A self-cleaning negative pressure weighing cell according to claim 1, characterized in that: one side of the inner cavity of the air collection cavity (7) is clamped with a side filter screen (8), and the bottom of the inner cavity of the air collection cavity (7) is clamped with a bottom filter screen (9).

3. A self-cleaning negative pressure weighing cell according to claim 1, characterized in that: the output end of the suction fan (6) is fixedly communicated with a communicating pipe (22), and one end of the communicating pipe (22) is fixedly communicated with the inner cavity of the gas collection cavity (7).

4. A self-cleaning negative pressure weighing cell according to claim 1, characterized in that: a plurality of blocking curtains (10) are fixedly connected to the top of one side of the weighing box (1) far away from the connecting mechanism (4) at equal intervals, and the blocking curtains (10) are made of transparent PVC materials.

5. A self-cleaning negative pressure weighing cell according to claim 1, characterized in that: one end of the clamping ring (17) penetrates into the inner cavity of the connecting mechanism (4), and the surface of the sealing air bag (19) is in contact with the surface of the clamping ring (17).

6. A self-cleaning negative pressure weighing cell according to claim 1, characterized in that: the top of the front face of the weighing box (1) is fixedly provided with a switch panel (23), and the suction fan (6), the ultrasonic cleaner (11), the double-shaft motor (13), the air pump (20) and the electric air release valve (21) are electrically connected with an external power supply through the switch panel (23).