CN113350969B - A pharmaceutical waste gas collection device - Google Patents

Abstract

The invention relates to the technical field of pharmaceutical equipment, and discloses a pharmaceutical waste gas collection device, which includes a mounting plate, one end of the mounting plate is fixedly installed with a side plate, and the outer wall of the side plate facing the side of the mounting plate passes through a support bearing An air cylinder is connected, and a motor is fixedly installed on the outer wall of the side plate facing away from the mounting plate, and the driving device connected between the top of the output shaft of the motor and the air cylinder drives the air cylinder to rotate. The motor runs to drive the gear on the top of its output shaft to rotate, and the gear rotates to drive the fan cylinder to rotate through the gear ring meshed on its outer wall. , so that the air flow speed in the pharmaceutical workshop can be significantly improved; the negative pressure fan is also running when the air cylinder rotates, and the negative pressure fan runs through the air inlet pipe to enter the air, and the air inlet pipe enters the air while rotating, so that the collection of exhaust gas is more efficient comprehensive.

Description

A pharmaceutical waste gas collection device

technical field

The invention relates to the technical field of pharmaceutical equipment, in particular to a pharmaceutical waste gas collection device.

Background technique

With the improvement of medical level, there are corresponding treatment methods for various diseases, and more and more pharmaceutical workshops are set up. During the normal production and processing of drugs in pharmaceutical workshops, a large amount of chemical waste gas will be generated. These chemical waste gases will not only affect people's health, but also cause serious pollution to the environment. Therefore, how to effectively collect and treat pharmaceutical waste gas is our responsibility. A problem that had to be solved.

The Chinese patent announcement number is: CN108355409B invention patent, which discloses a waste gas collection and purification unit for a pharmaceutical workshop, including a suction swing plate, a sealed air chamber, a burning plate, an exhaust cylinder, a transmission frame, a fixed column, and a dust filter suction frame , the first pendulum shaft, the connecting plate, the second pendulum shaft, the motor, the storage box, the push-pull ring, the movable rack, the rack and the blower. The beneficial effects of the present invention are: the device sucks and collects the waste gas in the pharmaceutical workshop through two symmetrically arranged suction swing plates reciprocating left and right, and the first and second swing shafts on the suction swing plate drive the dust filter suction frame to Continuously swinging in a direction, so that the swinging amplitude and frequency of the suction swing plate are larger and faster, and the drive frame drives the two suction swing plates to continuously slide back and forth through the movable gear rod to inhale air, which improves the air flow speed in the workshop and at the same time, It also makes the device more comprehensive in the collection of waste gas in the workshop, ensuring the high efficiency of waste gas collection; the device is easy to operate, and the connections of various components are flexible.

Although the above exhaust gas collection and purification unit has the advantages of comprehensive exhaust gas collection, convenient operation, and the ability to increase the air flow rate, we have found that it still has certain shortcomings in actual use, such as:

1. The collection of pharmaceutical waste gas by the above-mentioned waste gas collection and purification unit is still not comprehensive enough, and the wind force generated during the swing process is also limited, making it difficult to effectively increase the air flow speed;

2. The above waste gas collection and purification unit cannot use purification particles to adsorb and purify pharmaceutical waste gas. Even if the waste gas collection and purification unit is filled with purification particles, the contact effect between the filled purification particles and the waste gas is limited, and it will also increase the fan. The wind resistance of the fan is higher, and the demand for the wind pressure of the fan is higher, and the power consumption is also greater;

3. Although the dust filter suction rack in the above-mentioned waste gas collection and purification unit can filter the dust and other particles in the pharmaceutical waste gas, it is not convenient to clean the particles adhered to the filter screen, and it is easy to block the filter screen after a long time of use. Moreover, if you want to To achieve a better filtering effect, it is necessary to use a filter with a smaller pore size. However, a filter with a smaller pore size is more likely to be clogged. Such a vicious cycle leads to poor practicability of the above-mentioned dust filter suction rack;

Based on this, we propose a pharmaceutical waste gas collection device, hoping to solve the deficiencies in the prior art.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a pharmaceutical waste gas collection device, which has comprehensive waste gas collection, can significantly increase the air flow speed, facilitates the adsorption and purification of pharmaceutical waste gas by purification particles, and can automatically clean and collect dust on the filter net. advantage.

(2) Technical solutions

In order to realize the above-mentioned purpose of collecting exhaust gas comprehensively and significantly increasing the air flow velocity, the present invention provides the following technical solution: a pharmaceutical exhaust gas collection device, comprising a mounting plate, one end of the mounting plate is fixedly installed with a side plate, and the side plate The outer wall of the side plate facing the mounting plate is connected with a blower through a support bearing, the outer wall of the side plate facing away from the mounting plate is fixedly installed with a motor, and the driving device connected between the top of the output shaft of the motor and the blower , to drive the fan to rotate;

A plurality of air inlet pipes are fixedly installed on the outer wall on the left side of the air cylinder, a negative pressure fan is fixedly installed on the inner wall of the air cylinder, and an air outlet pipe is fixedly installed on the right end of the air outlet pipe. The end extends through the support bearing and the side plate to the right side of the side plate.

As a preferred technical solution of the present invention, the drive device includes a gear and a ring gear, the gear is fixedly installed on the top of the output shaft of the motor, the outer wall of the gear is engaged with a ring gear, and the ring gear is fixedly installed on the wind turbine. on the outer wall of the cylinder.

On the basis of the above technical solution, in order to achieve the purpose of facilitating the adsorption and purification of pharmaceutical waste gas by purification particles, the present invention further provides the following technical solution: the inner wall of the air duct is also fixedly installed with a first barrier net and a second barrier net , the first barrier net and the second barrier net are arranged on the left side of the negative pressure fan;

Purification particles are filled between the first barrier net and the second barrier net.

As a preferred technical solution of the present invention, an elastic sleeve is also arranged between the first barrier net and the second barrier net, the elastic sleeve is fixedly installed on the inner wall of the air duct, and the purification particles are located in the first barrier net. In the cavity surrounded by the net, the second barrier net and the elastic sleeve.

On the basis of the above technical solution, in order to achieve the purpose of automatically cleaning and collecting dust on the filter screen, the present invention further provides the following technical solution: the air inlet pipe includes an inner cylinder, an outer cylinder and a wind deflector, and the inner cylinder It is fixedly installed on the outer wall of the air cylinder, the outer cylinder is sleeved on the top of the inner cylinder, and the wind guide plate is fixedly installed on both sides of the top of the outer cylinder.

As a preferred technical solution of the present invention, an inner box is fixedly installed on the top of the inner cylinder, and the inner box is slidably arranged on the inner wall of the limiting groove, and the limiting groove is opened on the inner wall of the outer cylinder;

Ventilation slots are opened on the top of the inner box, and a filter screen is arranged inside the inner box.

As a preferred technical solution of the present invention, both sides of the bottom of the filter screen are provided with retaining rods movable, the top of the retaining rod is an arc surface, and the retaining rod is fixedly installed on the inner bottom wall of the inner box;

Both sides of the top of the filter screen are fixedly installed with pillars, and the top ends of the pillars pass through the inner box and are fixedly installed on the inner top wall of the limiting groove.

As a preferred technical solution of the present invention, arc-shaped surfaces are formed on the left and right sides of the top of the wind deflector;

The bottom of the mounting plate is fixedly installed with a pressure rod, the bottom of the pressure rod is an arc surface, and the bottom of the pressure rod is movably arranged on the outer wall of the arc surface.

As a preferred technical solution of the present invention, several ash inlet holes are evenly opened on the outer wall of the pillar, the top of the pillar is connected with a first through pipe, and the top of the first through pipe is provided with a first control valve, the top of the first control valve is provided with a second pipe, and the second pipe is fixedly installed at the air inlet of the fan;

The first through pipe, the first control valve, the second through pipe and the fan are all arranged in the wall of the outer cylinder;

The air outlet of the fan is provided with a mounting groove, the inner wall of the mounting groove is threadedly connected with a mounting column, and the end of the mounting column is fixedly connected with a dust bag.

As a preferred technical solution of the present invention, a second control valve is arranged inside the inner cylinder;

The outer wall of the air duct is pasted with several reflective stickers, and the pasting positions of the several reflective stickers correspond to the installation positions of the several air inlet pipes one by one. sensor;

The output end of the proximity sensor is electrically connected to a controller, and the output end of the controller is electrically connected to the input ends of the first control valve, the second control valve and the fan.

(3) Beneficial effects

Compared with the prior art, the present invention provides a pharmaceutical waste gas collection device, which has the following beneficial effects:

1. In this waste gas collection device for pharmaceutical use, the motor runs to drive the gear on the top of the output shaft to rotate, and the gear rotates to drive the air cylinder to rotate through the gear ring meshed on its outer wall. When the air cylinder rotates, the air inlet pipe fixed on the outer wall can generate wind. (The air inlet pipe is equivalent to the fan blade), which can significantly increase the air flow speed in the pharmaceutical workshop;

When the air cylinder rotates, the negative pressure fan is also running, and the negative pressure fan operates to enter the air through the air inlet pipe, and the air inlet pipe enters the air while rotating, so that the collection of exhaust gas is more comprehensive.

2. In the exhaust gas collection device for pharmaceutical use, when the air cylinder rotates, the purification particles filled between the first barrier net and the second barrier net roll back and forth between the first barrier net and the second barrier net, so that the purification particles can be increased The contact area with the exhaust gas has a better adsorption and purification effect on the exhaust gas;

There is also an elastic sleeve between the first barrier net and the second barrier net, and the rolling purification particles collide with the elastic sleeve and are bounced, so that the movement range of the purification particles is greater and the contact effect with the exhaust gas is better , since the purification particles can bounce back and forth between the first barrier net and the second barrier net, there is no need to fill more purification particles between the first barrier net and the second barrier net to achieve an excellent adsorption and purification effect , the remaining space between the first barrier net and the second barrier net is large enough, the wind pressure of the negative pressure fan will not be increased too much, and the power consumption is small.

3. In this waste gas collection device for pharmaceutical use, when the air cylinder rotates, the air deflector on the top of the outer cylinder is in contact with the pressure rod in a cycle, and is pressed down by the pressure rod under the action of the arc surface, and the air deflector moves downward. Drive the outer cylinder to move downward, and the outer cylinder moves downward and passes through the pillars to press down the two ends of the filter net, so that the middle part of the filter net will bulge up. It will also become larger accordingly, so that the particles adhered to the outer wall can fall off;

Since the air deflectors on the top of the outer cylinder are in contact with the pressing rods one after the other, the pillars will have two pressing down and two recovering deformation actions. Through the two pressing down and two recovering deformation actions, the filter will Vibration is generated, and the vibration of the filter screen can further shake off the particles adhered to the filter screen, and the dust removal effect is better.

4. In the waste gas collection device for pharmaceutical use, when the air deflector on the top of the outer cylinder is in contact with the pressure rod, the reflective sticker corresponding to the position of the outer cylinder is also recognized by the proximity sensor, and the identification signal is transmitted to the control The controller receives the signal to control the second control valve at the outer cylinder to close, the first control valve to open, and the fan to run. At this time, the passage of the inner cylinder corresponding to the outer cylinder is closed, and the negative pressure generated by the negative pressure fan The air pressure cannot be transmitted to the inner cylinder, so the particles shaken off the filter net will be attracted by the negative pressure generated by the fan, and pass through the ash inlet hole, the pillar, the first pipe, the first control valve, the second pipe and the fan. The particles are sent into the dust bag to collect the particles, and the dust bag is screwed into the installation groove through the installation column, which is easy to disassemble and replace.

Description of drawings

Fig. 1 is the three-dimensional schematic view of the overall structure of the present invention;

Fig. 2 is the front sectional view of air duct part of the present invention;

Fig. 3 is a three-dimensional schematic view of the elastic sleeve part of the present invention;

Fig. 4 is a side sectional view of the air duct part of the present invention;

Fig. 5 is a three-dimensional schematic view of the air inlet pipe part of the present invention;

Fig. 6 is a sectional view of the air inlet pipe part of the present invention;

Fig. 7 is the enlarged schematic view of place A in Fig. 6 of the present invention;

Fig. 8 is the enlarged schematic view of place B in Fig. 6 of the present invention;

Fig. 9 is a schematic perspective view of the inner box part of the present invention;

Fig. 10 is the schematic diagram of filter screen filtering state of the present invention;

Fig. 11 is a schematic diagram of the cleaning state of the filter screen of the present invention.

In the figure: 1. Mounting plate; 2. Side plate; 3. Support bearing; 4. Air duct; 5. Motor; 6. Gear; 7. Gear ring; 8. Air inlet pipe; 9. Negative pressure fan; 10. Outlet pipe; 11. The first barrier net; 12. The second barrier net; 13. Purification particles; 14. Elastic sleeve; 15. Inner cylinder; 16. Outer cylinder; 17. Air guide plate; 19. Inner box; 20. Limiting slot; 21. Ventilation slot; 22. Filter screen; 23. Barrier; 24. Pillar; 25. First through pipe; 26. First control valve; 27. Second through pipe ; 28, fan; 29, installation slot; 30, installation column; 31, dust bag; 32, second control valve; 33, reflective sticker; 34, proximity sensor;

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal" etc. is based on the orientation or positional relationship shown in the drawings, and is only In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Embodiment one:

Please refer to Figure 1, a waste gas collection device for pharmaceuticals, including a mounting plate 1, one end of the mounting plate 1 is fixedly installed with a side plate 2, and the outer wall of the side plate 2 facing the side of the mounting plate 1 is connected with a blower through a support bearing 3 4. A motor 5 is fixedly installed on the outer wall of the side plate 2 facing away from the installation plate 1, and the driving device connected between the top of the output shaft of the motor 5 and the air cylinder 4 drives the air cylinder 4 to rotate;

Several air inlet pipes 8 are fixedly installed on the outer wall on the left side of the air cylinder 4, a negative pressure fan 9 is fixedly installed on the inner wall of the air cylinder 4, an air outlet pipe 10 is fixedly installed on the right end of the air cylinder 4, and the end of the air outlet pipe 10 Extend through the supporting bearing 3 and the side plate 2 to the right side of the side plate 2;

The driving device includes a gear 6 and a gear ring 7. The gear 6 is fixedly installed on the top of the output shaft of the motor 5. The outer wall of the gear 6 is meshed with a gear ring 7. The gear ring 7 is fixedly installed on the outer wall of the air duct 4. The motor 5 runs to drive it. The gear 6 on the top of the output shaft rotates, and the gear 6 rotates through the gear ring 7 meshed with its outer wall to drive the air cylinder 4 to rotate. When the air cylinder 4 rotates, the air inlet pipe 8 fixedly installed on its outer wall can generate wind (the air inlet pipe 8 is equivalent to Fan blades), which can significantly increase the air flow speed in the pharmaceutical workshop;

When the air cylinder 4 rotates, the negative pressure fan 9 is also running, and the negative pressure fan 9 runs through the air inlet pipe 8 to enter the air, and the air inlet pipe 8 enters the wind while rotating, so that the collection of exhaust gas is more comprehensive. The air pipe 10 is discharged, and the end of the air outlet pipe 10 can be connected to storage equipment such as an air storage tank to facilitate the collection of exhaust gas;

Embodiment two:

Please refer to Fig. 2 and Fig. 3, on the basis of the first embodiment, the inner wall of the air duct 4 is also fixedly installed with a first barrier net 11 and a second barrier net 12, and the first barrier net 11 and the second barrier net 12 are arranged on On the left side of the negative pressure fan 9, between the first barrier net 11 and the second barrier net 12, there are purification particles 13;

When the blower 4 rotates, the purification particles 13 filled between the first barrier net 11 and the second barrier net 12 roll back and forth between the first barrier net 11 and the second barrier net 12, thereby increasing the concentration of the purification particles 13 and the waste gas. The contact area between them has a better adsorption and purification effect on exhaust gas. In this embodiment, the purification particles 13 can be selected as adsorbents with adsorption functions such as activated carbon;

An elastic sleeve 14 is also arranged between the first barrier net 11 and the second barrier net 12, and the elastic sleeve 14 is fixedly installed on the inner wall of the blower 4, and the purification particles 13 are located between the first barrier net 11, the second barrier net 12 and the elastic In the cavity surrounded by cover 14;

An elastic sleeve 14 is also arranged between the first barrier net 11 and the second barrier net 12, and the rolling purification particles 13 collide with the elastic sleeve 14 and are bounced up again, so that the movement range of the purification particles 13 can be larger, and the exhaust gas The contact effect between is better;

Since the purification particles 13 can bounce back and forth between the first barrier net 11 and the second barrier net 12, there is no need to fill more purification particles 13 between the first barrier net 11 and the second barrier net 12. Excellent adsorption and purification effect, the remaining space between the first barrier net 11 and the second barrier net 12 is large enough, the wind pressure of the negative pressure fan 9 will not be increased too much, and the power consumption is small.

Embodiment three:

Please refer to Fig. 4-Fig. 11, on the basis of Embodiment 1 and Embodiment 2, the air inlet pipe 8 includes an inner cylinder 15, an outer cylinder 16 and a wind deflector 17, and the inner cylinder 15 is fixedly installed on the outer wall of the air cylinder 4 , the outer cylinder 16 is sheathed on the top of the inner cylinder 15 , and the wind deflectors 17 are fixedly installed on both sides of the top of the outer cylinder 16 .

The top of the inner cylinder 15 is fixed with an inner box 19, the inner box 19 is slidably arranged on the inner wall of the limiting groove 20, the limiting groove 20 is opened on the inner wall of the outer cylinder 16, and the top of the inner box 19 is provided with a ventilation groove 21. A filter screen 22 is arranged inside the box 19, and the filter screen 22 can filter particulate matter in the exhaust gas;

Both sides of filter screen 22 tops are fixedly equipped with pillars 24, and the top of pillars 24 passes through inner box 19 and is fixedly installed on the inner top wall of limit groove 20, and the both sides of filter screen 22 bottoms are movable to be provided with retaining bar 23, The top of retaining rod 23 is an arc surface, and retaining rod 23 is fixedly installed on the inner bottom wall of inner box 19, and retaining rod 23 plays the effect of " fulcrum ". Under the effect of 23, the middle part of filter screen 22 can bulge, as shown in Figure 11;

Please refer to Fig. 10 again, what shown in Fig. 10 is the shape of filter screen 22 under the common state;

The left and right sides of the top of the wind deflector 17 are all formed with arc-shaped surfaces 18, and the bottom of the mounting plate 1 is fixedly equipped with a depression bar 35. On the outer wall of the air cylinder 4, when the air cylinder 4 rotates, the wind deflector 17 on the top of the outer cylinder 16 is in contact with the pressure rod 35 in a cycle, and is pressed down by the pressure rod 35 under the action of the arc surface 18, and the wind deflector 17 moves toward the The downward movement drives the outer cylinder 16 to move downward, and the outer cylinder 16 moves downward and passes through the support 24 to press the two ends of the filter screen 22 to make the middle part of the filter screen 22 bulge. When the middle part of the filter screen 22 bulges, its mesh must Stretch deformation occurs, and the filter hole will be correspondingly enlarged, so that the particles adhered to the outer wall can fall off;

Since the wind guide plate 17 on the top of the outer cylinder 16 is in contact with the pressing rod 35 one after the other, the pillar 24 will have two pressing down and two recovering deformation actions. , the filter screen 22 will vibrate, and the vibration of the filter screen 22 can further shake off the particles adhered to the filter screen 22, and the ash removal effect is better;

When the filter holes of filter screen 22 are denser, the effect of utilizing pulling and shaking to remove dust is better, thereby, in practical application, denser filter screen 22 can be selected for use to achieve the effect of high-efficiency filtration;

The outer wall of the pillar 24 is evenly provided with several ash inlet holes, the top of the pillar 24 is connected with a first through pipe 25, the top of the first through pipe 25 is provided with a first control valve 26, and the top of the first control valve 26 is provided with a The second through pipe 27, the second through pipe 27 is fixedly installed on the air inlet of the fan 28, the first through pipe 25, the first control valve 26, the second through pipe 27 and the fan 28 are all arranged in the wall of the outer cylinder 16;

The air outlet of the fan 28 is provided with a mounting groove 29, the inner wall of the mounting groove 29 is threadedly connected with a mounting column 30, and the end of the mounting column 30 is fixedly connected with a dust bag 31, and the dust bag 31 is threaded in the mounting groove through the mounting column 30 29, easy to disassemble and replace;

A second control valve 32 is provided inside the inner cylinder 15, and the second control valve 32 is used to control the on-off of the inner cylinder 15;

The outer wall of the air duct 4 is pasted with several reflective stickers 33, the pasting positions of the several reflective stickers 33 correspond to the installation positions of the several air inlet pipes 8, and the bottom of the mounting plate 1 is also fixedly installed with reflective stickers 33 for identification. Proximity sensor 34, the output end of proximity sensor 34 is electrically connected with controller, and the output end of controller is electrically connected with the input end of first control valve 26, second control valve 32 and fan 28;

When the wind deflector 17 on the top of the outer cylinder 16 is in contact with the pressure rod 35, the reflective sticker 33 corresponding to the position of the outer cylinder 16 is also recognized by the proximity sensor 34 at the same time, and the identification signal is transmitted to the controller. The device receives the signal to control the second control valve 32 at the outer cylinder 16 to close, the first control valve 26 to open, and the fan 28 to run. At this time, the passage of the corresponding inner cylinder 15 at the outer cylinder 16 is closed, and the negative pressure fan The negative pressure generated by 9 cannot be transmitted to the inner cylinder 15, so that the particles shaken off on the filter screen 22 will be attracted by the negative pressure generated by the fan 28, and pass through the ash inlet hole, pillar 24, first through pipe 25, The first control valve 26, the second duct 27 and the fan 28 send the particles into the dust bag 31 to collect the particles;

In actual operation, the air inlet pipe 8 rotated to the top cleans and collects the dust on the filter screen 22, and the remaining air inlet pipes 8 normally enter the air, which will not affect the collection progress of exhaust gas.

Principle of work of the present invention and use process:

The motor 5 runs to drive the gear 6 on the top of its output shaft to rotate, and the gear 6 rotates to drive the fan cylinder 4 to rotate through the toothed ring 7 meshed with its outer wall. The air duct 8 is equivalent to the fan blade), which can significantly improve the air flow velocity in the pharmaceutical workshop;

When the air cylinder 4 rotates, the negative pressure fan 9 is also running, and the negative pressure fan 9 operates to enter the air through the air inlet pipe 8, and the air inlet pipe 8 enters the air while rotating, so that the collection of exhaust gas is more comprehensive;

When the blower 4 rotates, the purification particles 13 filled between the first barrier net 11 and the second barrier net 12 roll back and forth between the first barrier net 11 and the second barrier net 12, thereby increasing the concentration of the purification particles 13 and the waste gas. The contact area between them has a better adsorption and purification effect on exhaust gas;

An elastic sleeve 14 is also arranged between the first barrier net 11 and the second barrier net 12, and the rolling purification particles 13 collide with the elastic sleeve 14 and are bounced up again, so that the movement range of the purification particles 13 can be larger, and the exhaust gas The contact effect between is better;

Since the purification particles 13 can bounce back and forth between the first barrier net 11 and the second barrier net 12, there is no need to fill more purification particles 13 between the first barrier net 11 and the second barrier net 12. Excellent adsorption and purification effect, the remaining space between the first barrier net 11 and the second barrier net 12 is large enough, the wind pressure of the negative pressure fan 9 will not be increased too much, and the power consumption is small;

When the air cylinder 4 rotates, the wind deflector 17 on the top of the outer cylinder 16 is in contact with the pressure rod 35 in a cyclical manner, and is pressed down by the pressure rod 35 under the action of the arc surface 18, and the wind deflector 17 moves downward to drive the outer cylinder 4. The cylinder 16 moves downward, and the outer cylinder 16 moves downward through the pillar 24, which will press down the two ends of the filter screen 22, so that the middle part of the filter screen 22 will bulge up. , at the same time the filter hole will be correspondingly enlarged, so that the particles adhered to the outer wall can be shed;

Since the wind guide plate 17 on the top of the outer cylinder 16 is in contact with the pressing rod 35 one after the other, the pillar 24 will have two pressing down and two recovering deformation actions. , the filter screen 22 will vibrate, and the vibration of the filter screen 22 can further shake off the particles adhered to the filter screen 22, and the ash removal effect is better;

When the wind deflector 17 on the top of the outer cylinder 16 is in contact with the pressure rod 35, the reflective sticker 33 corresponding to the position of the outer cylinder 16 is also recognized by the proximity sensor 34 at the same time, and the identification signal is transmitted to the controller. The device receives the signal to control the second control valve 32 at the outer cylinder 16 to close, the first control valve 26 to open, and the fan 28 to run. At this time, the passage of the corresponding inner cylinder 15 at the outer cylinder 16 is closed, and the negative pressure fan The negative pressure generated by 9 cannot be transmitted to the inner cylinder 15, so that the particles shaken off on the filter screen 22 will be attracted by the negative pressure generated by the fan 28, and pass through the ash inlet hole, pillar 24, first through pipe 25, The first control valve 26, the second pipe 27 and the fan 28 send the particles into the dust bag 31 to collect the particles. The dust bag 31 is threaded in the installation groove 29 through the installation column 30, which is convenient for dust collection. The bag 31 is disassembled and replaced.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (4)

1. A pharmaceutical waste gas collection device, comprising a mounting plate (1), characterized in that: one end of the mounting plate (1) is fixedly mounted with a side plate (2), and the side plate (2) faces the mounting plate ( 1) An air duct (4) is connected to the outer wall of one side through a supporting bearing (3), and a motor (5) is fixedly installed on the outer wall of the side plate (2) facing away from the installation plate (1), connected to the The driving device between the top of the output shaft of the motor (5) and the air cylinder (4) drives the air cylinder (4) to rotate; Several air inlet pipes (8) are fixedly installed on the outer wall on the left side of the air cylinder (4), and a negative pressure fan (9) is fixedly installed on the inner wall of the air cylinder (4), and the air cylinder (4) The right end of the air outlet pipe (10) is fixedly installed, and the end of the air outlet pipe (10) extends through the support bearing (3) and the side plate (2) to the right side of the side plate (2); The air inlet pipe (8) includes an inner cylinder (15), an outer cylinder (16) and an air deflector (17), the inner cylinder (15) is fixedly installed on the outer wall of the air cylinder (4), and the outer The cylinder (16) is sleeved on the top of the inner cylinder (15), and the wind deflector (17) is fixedly installed on both sides of the top of the outer cylinder (16); An inner box (19) is fixedly installed on the top of the inner cylinder (15), and the inner box (19) is slidably arranged on the inner wall of the limiting groove (20), and the limiting groove (20) is opened in the outer cylinder ( 16) on the inner wall, the top of the inner box (19) is provided with a ventilation slot (21), and the inside of the inner box (19) is provided with a filter screen (22); Both sides of the bottom of the filter (22) are provided with retaining rods (23), the top of the retaining rod (23) is an arc surface, and the retaining rods (23) are fixedly installed in the inner box (19). The two sides of the top of the filter screen (22) on the bottom wall are fixed with pillars (24), and the top of the pillars (24) passes through the inner box (19) and is fixedly installed on the inner top of the limit groove (20). on the wall; The left and right sides of the top of the wind deflector (17) are formed with arc-shaped surfaces (18), the bottom of the installation plate (1) is fixedly installed with a pressure rod (35), and the bottom of the pressure rod (35) is an arc surface, and the bottom of the pressure rod (35) is movably arranged on the outer wall of the arc surface (18); The outer wall of the pillar (24) is evenly provided with several ash inlet holes, the top of the pillar (24) is connected with a first through pipe (25), and the top of the first through pipe (25) is provided with a first A control valve (26), the top of the first control valve (26) is provided with a second pipe (27), the second pipe (27) is fixedly installed at the air inlet of the fan (28), the The first pipe (25), the first control valve (26), the second pipe (27) and the fan (28) are all arranged in the wall of the outer cylinder (16), and the air outlet of the fan (28) is opened There is an installation groove (29), the inner wall of the installation groove (29) is threadedly connected with an installation column (30), and the end of the installation column (30) is fixedly connected with a dust bag (31); The inner cylinder (15) is provided with a second control valve (32), and the outer wall of the air duct (4) is pasted with several reflective stickers (33), and the pasting positions of the several reflective stickers (33) are The installation positions of several air inlet pipes (8) correspond one by one, and the bottom of the installation plate (1) is also fixedly installed with a proximity sensor (34) for identifying reflective stickers (33), and the proximity sensor (34) The output end is electrically connected with a controller, and the output end of the controller is electrically connected with the input end of the first control valve (26), the second control valve (32) and the fan (28). 2. A pharmaceutical waste gas collection device according to claim 1, characterized in that: the driving device includes a gear (6) and a ring gear (7), and the gear (6) is fixedly installed on the motor (5) On the top of the output shaft, the outer wall of the gear (6) is meshed with a gear ring (7), and the gear ring (7) is fixedly installed on the outer wall of the air duct (4). 3. A pharmaceutical waste gas collection device according to claim 1, characterized in that: the inner wall of the air cylinder (4) is also fixedly installed with a first barrier net (11) and a second barrier net (12), The first barrier net (11) and the second barrier net (12) are arranged on the left side of the negative pressure fan (9); Purification particles (13) are filled between the first blocking net (11) and the second blocking net (12). 4. A pharmaceutical waste gas collection device according to claim 3, characterized in that: an elastic sleeve (14) is arranged between the first barrier net (11) and the second barrier net (12), so that The elastic sleeve (14) is fixedly installed on the inner wall of the air duct (4), and the purification particles (13) are located in the circle surrounded by the first barrier net (11), the second barrier net (12) and the elastic sleeve (14). inside the cavity.

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