Laboratory waste gas purification device

Abstract

The invention relates to a laboratory waste gas purification device which comprises a flow guide part and a detection part, the flow guide part is used for keeping air flow longitudinally passing indoors in a filling manner, and the detection part is used for detecting a waste gas forming part and is matched with the flow guide part. Through the arrangement of the flow guide part in the laboratory, when external fresh air enters the laboratory, the air can longitudinally flow through the laboratory, so that waste gas can longitudinally flow away along with airflow, transverse spreading of the waste gas in the laboratory is avoided as far as possible, and meanwhile, the waste gas purification device can also be used for places with high waste gas concentration. According to the waste gas purification device, the air flow speed of the area is independently increased, so that the speed of taking away the waste gas is increased, pollution of the waste gas to other areas is reduced, and compared with an existing purification device, the effect is better in the process of guiding the waste gas to the outside.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, in particular to a laboratory waste gas purification device. BACKGROUND

[0002] The purification treatment of the waste gas in the laboratory is mainly through the steps of collection and decomposition, clean air outside is introduced into the laboratory through the air supply equipment, and the indoor suction is taken through the suction equipment, so that the indoor waste gas is concentrated under the guidance of the air flow and introduced into the corresponding treatment equipment for decomposition treatment such as pickling and alkaline washing.

[0003] In the above process, the conventional setting mode is usually that the air supply equipment and the suction are horizontally distributed, that is, they are arranged on the opposite walls, which makes the flow direction of the air flow in the laboratory horizontal, so as to easily cause the waste gas mixed in the air flow to pollute many areas in the laboratory, that is, to increase the diffusion range of the waste gas in the room, so as to not only pollute the equipment, but also pollute the personnel when there are many personnel in the room. SUMMARY

[0004] This part aims to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part and the abstract and title of the specification to avoid obscuring the purpose of this part, the abstract and the title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0005] To solve the technical problems reflected in the above background art, the present application provides the following technical solutions:

[0006] A laboratory waste gas purification device comprises:

[0007] A flow guide part keeps the air flow in the room in a full longitudinal direction;

[0008] A detection part detects the waste gas formation place, the flow guide part generates a strengthened air flow at the waste gas formation place through the detection result of the detection part, and the speed of the strengthened air flow is greater than that of the air flow.

[0009] As a preferred technical solution of the laboratory waste gas purification device, the flow guide part comprises an air suction end and an air outlet end, which are arranged on two opposite sides of the longitudinal direction in the room respectively, the air flow enters the room from the air suction end and flows out from the air outlet end.

[0010] As a preferred technical solution of the laboratory waste gas purification device, it further comprises:

[0011] An exhaust branch connected with the air suction end, and a plurality of exhaust branches are connected with the treatment equipment;

[0012] A gas supply branch connected to the gas outlet end, and a plurality of the gas supply branches are connected to a fresh air source.

[0013] An adjusting part, which synchronously adjusts the exhaust branch and the gas supply branch connected to the gas inlet end and the gas outlet end at the same level, and the detecting part is connected to the adjusting part.

[0014] As a preferred technical solution of the laboratory exhaust gas purification device, the adjusting part includes a first channel and a second channel arranged relatively fixedly, which are respectively connected to the treatment equipment and the fresh air source, and:

[0015] The first channel includes a plurality of inlet ports, which are respectively connected to a plurality of the exhaust branches;

[0016] The second channel includes a plurality of outlet ports, which are respectively connected to a plurality of the gas supply branches;

[0017] A shielding part, which synchronously shields one of the inlet ports and the outlet ports.

[0018] As a preferred technical solution of the laboratory exhaust gas purification device, the shielding part is arranged relatively movably with the first channel and the second channel, and the shielding part synchronously shields or unshields the inlet port and the outlet port during movement.

[0019] As a preferred technical solution of the laboratory exhaust gas purification device, it further includes a first driving unit, the shielding part is arranged relatively linearly with the first channel and the second channel, the first driving unit applies force to the shielding part, and the detecting part is connected to the first driving unit.

[0020] As a preferred technical solution of the laboratory exhaust gas purification device, the first driving unit includes an electromagnetic element arranged relatively fixedly with the first channel and the second channel, and the shielding part is configured with magnetism and close to the electromagnetic element.

[0021] As a preferred technical solution of the laboratory exhaust gas purification device, the detecting part includes a gas sensor, which is arranged horizontally in the room and connected to a plurality of the first driving units.

[0022] As a preferred technical solution of the laboratory exhaust gas purification device, it further includes a second driving element and an air guide for forming air flow, and:

[0023] The first channel further includes an air outlet, which is connected to the treatment equipment;

[0024] The second channel further includes an air inlet, which is connected to the fresh air source;

[0025] The air guide is arranged in the air outlet and the air inlet respectively, and is connected with the transmission shaft by the second driving element.

[0026] As a preferred technical scheme of the laboratory exhaust gas purification device, the air inlet end and the air outlet end are horizontally extended and reach the indoor wall surface.

[0027] The laboratory exhaust gas purification device has the following beneficial effects:

[0028] 1. The laboratory exhaust gas purification device can keep the fresh air entering the laboratory in a longitudinal direction, so that the exhaust gas also flows in a longitudinal direction, thereby avoiding the horizontal spread of the exhaust gas in the laboratory as much as possible, reducing the pollution to other areas, and achieving better effect in guiding the exhaust gas to the outside compared with the existing purification device.

[0029] 2. The laboratory exhaust gas purification device can further increase the speed of the longitudinal airflow at the exhaust gas generation position through the cooperation of the detection part and the flow guide part, thereby further increasing the speed of the exhaust gas being guided out to the outdoor. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor. Among them:

[0031] Figure 1 It is a three-dimensional schematic view of the device arranged in the laboratory.

[0032] Figure 2 It is a longitudinal schematic view of the device arranged in the laboratory.

[0033] Figure 3 It is a three-dimensional display diagram of part of the structure.

[0034] Figure 4 It is Figure 3 Another view of the structure shown.

[0035] Figure 5 It is Figure 3 The top view of the structure shown.

[0036] Figure 6 It is Figure 3 The internal structure diagram of the structure shown by cutting.

[0037] Figure 7A sectional view of the structure shown in FIG. 1. Figure 6 A sectional view of the structure shown in FIG. 1.

[0038] Figure 8 A schematic diagram of the pipeline between some structures in the embodiment of the present application.

[0039] Figure 9 A schematic diagram of the structure of the gas outlet in the embodiment of the present application.

[0040] Figure 10 A sectional view of the structure shown in FIG. 1. Figure 9 A sectional view of the structure shown in FIG. 1.

[0041] Figure 11 A schematic diagram of the pipeline between some structures in the embodiment of the present application. Figure 9 A schematic diagram of the pipeline between some structures in the embodiment of the present application.

[0042] Reference signs:

[0043] 1, air inlet; 2, air outlet; 201, bottom shell; 202, bottom cover; 203, middle cavity; 204, side cavity; 205, air release port; 3, air supply branch; 4, air supply main line; 5, air exhaust branch; 6, air exhaust main line; 7, power assembly; 8, first channel; 9, air outlet main port; 10, inlet port; 11, second channel; 12, air inlet main port; 13, outlet port; 14, moving rod; 15, permanent magnet; 16, electromagnet; 17, paddle; 18, driving motor. DETAILED DESCRIPTION

[0044] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0045] In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0046] Secondly, "one embodiment" or "an embodiment" referred to herein means that a specific feature, structure or characteristic can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is separate or alternative to other embodiments.

[0047] Thirdly, the present application is described in detail in conjunction with the schematic diagram, and in the detailed description of the embodiments of the present application, the sectional view of the device structure will be partially enlarged without the general proportion for the convenience of description, and the schematic diagram is only an example, which should not limit the scope of protection of the present application herein. In addition, three-dimensional spatial dimensions including length, width and depth should be included in actual manufacture.

[0048] Referring to Figures 1-8 , the embodiments of the present application provide a laboratory exhaust gas purification device, the device includes an air suction end 1 and an air outlet end 2, both of which are arranged in a transverse array at the ceiling and the ground of the laboratory respectively, the array direction is consistent, the air suction end 1 and the air outlet end 2 are both in the form of a long strip, and both ends reach the horizontally opposite side walls of the laboratory, Figure 1 A diagram of this arrangement is given, which can be used as a reference;

[0049] The air suction end 1 and the air outlet end 2 are both in the form of an open structure for the passage of air flow, as shown in the air path diagram in Figure 8 , all air suction ends 1 are respectively connected to an exhaust branch 5 and an exhaust main path 6, the exhaust main path 6 is finally connected to a treatment device; and all air outlet ends 2 are respectively connected to a gas supply branch 3 and a gas supply main path 4, the end of the gas supply main path 4 is a fresh air inlet (an outdoor air source); both the gas supply main path 4 and the exhaust main path 6 are provided with a pumping device (paddle 17) for pumping air flow, when both pumping devices are working, the external fresh air reaches each gas supply branch 3 along the gas supply main path 4, and then enters the laboratory from the ground through each air outlet end 2, at the same time, the indoor air is discharged through each air suction end 1 at the top of the laboratory, and then reaches the exhaust main path 6 along the exhaust branch 5, and finally enters the treatment device for corresponding treatment; in this process, the air enters the laboratory from the ground and then flows away from the ceiling, so that the longitudinal air flow is formed in the entire laboratory, as shown in the diagram in Figure 2 (the colored arrows in the diagram represent air flow), so that the external fresh air continuously circulates in the laboratory in this flow direction, and the longitudinal flow can reduce the horizontal spread of solid particle pollutants or contaminated gas (hereinafter referred to as exhaust gas) in the laboratory, thereby reducing the pollution to other places in the laboratory;

[0050] For the operation of the above air path, the present application further includes a power assembly 7, the structure of which is shown in Figures 3-5 , the internal structure of the assembly has a first channel 8 and a second channel 11, the first channel 8 is used for the passage of indoor discharged air, and the second channel 11 is used for the passage of external fresh air flowing into the laboratory, in detail:

[0051] One end of the first channel 8 is an air outlet main port 9, and the other end is a plurality of entry ports 10 arranged side by side, the air outlet main port 9 is used for communication with the exhaust main path 6, and the plurality of entry ports 10 are used for communication with a plurality of exhaust branches 5 respectively;

[0052] The second channel 11 has an air inlet 12 at one end and a plurality of air outlets 13 at the other end. The air inlet 12 is connected to the air supply main line 4, and the air outlets 13 are connected to the air supply branch lines 3.

[0053] The power assembly 7 is also provided with a plurality of moving rods 14. Figure 6 and Figure 7 As shown in the figure, the plurality of air inlets 10 are arranged on the same ring array surface, and the plurality of air outlets 13 are also arranged on the same ring array surface. The two surfaces are parallel and opposite to each other. The air inlets 10 and the air outlets 13 located at the same array point on the two surfaces are connected to the air suction end 1 and the air outlet end 2, respectively, which are located at the same longitudinal position in the laboratory (i.e., the same horizontal position). That is, the air suction end 1 and the air outlet end 2 are longitudinally opposite to each other, and the air suction end 1 is located directly above the air outlet end 2.

[0054] The distribution of the plurality of moving rods 14 is the same as that of the plurality of air inlets 10 and the plurality of air outlets 13. That is, the moving rods 14 are also arranged in a ring array. Each moving rod 14 has two ends that can approach the air inlets 10 and the air outlets 13 located at the same array point, respectively. The two ends of the moving rod 14 are circular plates. The moving rod 14 is connected to the housing of the assembly by a return spring, so that the moving rod 14 is fixed in place in the normal state. At this time, the two ends of the moving rod 14 partially block the air inlets 10 and the air outlets 13, respectively. However, the air can still flow through the air inlets 10 and the air outlets 13, and the flow rate can meet the requirements of normal air flow circulation in the laboratory. Figure 7 As shown in the figure, when the moving rod 14 is slightly offset to the right, the blockage of the air inlets 10 and the air outlets 13 located at the same array point is removed, thereby increasing the air flow rate of the air inlets 10 and the air outlets 13 at the same array point. Correspondingly, in the laboratory, the air suction end 1 and the air outlet end 2 at the same horizontal position have increased air suction and air intake, thereby increasing the air flow rate at that position in the laboratory, making the air flow rate at that position greater than that at other positions.

[0055] Further, the control process of the moving rod 14 is as shown in the figure. Figure 6 and Figure 7 As shown in the figure, the power assembly 7 is also provided with electromagnets 16. Each moving rod 14 corresponds to an electromagnet 16. The electromagnet 16 is ring-shaped, and the solenoid is arranged in the wall thickness of the ring-shaped structure. The moving rod 14 is fixed with a permanent magnet 15 on the side. The ring-shaped structure of the electromagnet 16 forms a sleeve around the moving rod 14 and covers part of the permanent magnet 15 on the moving rod 14. Therefore, the movement of the moving rod 14 can be controlled by the magnetic force of the electromagnet 16. Thus, each electromagnet 16 controls the increase of the air flow rate at each position in the laboratory.

[0056] The inside of the laboratory is also provided with sensors for detecting contaminating gases or substances in the airflow. Specifically, the sensors are selected according to the type of work of the laboratory. For example, for laboratories that require combustion experiments, solid contaminant waste in the form of fine particles will be formed in the air. At this time, a particulate matter sensor should be selected. For laboratories that conduct biochemical experiments, some acidic or alkaline contaminant gases will be formed in the laboratory. At this time, the corresponding sensor is selected according to the specific type of the laboratory. Specifically, the sensors are also provided on the ceiling of the laboratory. They can also be provided at each air suction end 1 for detecting the exhaust gas in the upward airflow in each place of the laboratory. The sensor in each place and the electromagnet 16 for controlling the airflow enhancement in the corresponding place are connected by a control module to establish an electrical signal connection.

[0057] Based on the above, the linkage mode of the signal connection is as follows: When there is exhaust gas in the upward airflow in a certain place in the laboratory, or the exhaust gas concentration reaches a certain value, it is detected by the corresponding sensor in that place. At this time, the electromagnet 16 for controlling the airflow enhancement in that place will act, thereby controlling the flow rate of the upward airflow in that place, i.e., the circulation speed of the airflow in that place is individually accelerated, so that the exhaust gas generated in that place can be carried away as soon as possible to reduce the spreading time in the laboratory. This mode makes the purification process in the laboratory more flexible. That is, when the laboratory is normally conducting experiments, the basic airflow circulation can be maintained. When it is detected that there is exhaust gas in a certain place, the circulation airflow speed in that place can be individually increased to accelerate the removal of the exhaust gas in that place. Therefore, compared with the traditional purification process, the purification of the present application can more accurately target the place where the exhaust gas is generated in the laboratory, and therefore the effect is better.

[0058] Further, the driving motor 18 is fixedly installed on the power assembly 7. The two paddles 17 are rotatably installed at the air outlet port 9 and the air inlet port 12, respectively. The two paddles 17 are connected by a transmission shaft that penetrates the power assembly 7 shell. The output shaft of the driving motor 18 is integrated with the transmission shaft. When the driving motor 18 works, the two paddles 17 work synchronously to realize the air intake and air extraction process in the laboratory.

[0059] Further, the above overall scheme describes the arrangement of the air suction end 1 at the top of the laboratory and the air outlet end 2 at the bottom. In actual arrangement, the arrangement can be reversed to realize the overall downward flow of the airflow in the laboratory. For example, for some heavy density contaminant gases or large diameter particulate pollutants, this arrangement can be selected.

[0060] Further, referring to Figures 9-11 For the structure of the air outlet end 2 in this scheme, it is composed of a bottom shell 201 and a bottom cover 202. The two are clamped together. One end of the bottom shell 201 is used to communicate with the air supply branch 3, as shown in Figure 11As shown, when the air outlet 2 is arranged, the bottom shell 201 is flush with the ground, and the bottom cover 202 has an air vent 205. The bottom shell 201 has a partition wall inside, which divides the entire internal space of the bottom shell 201 into a central cavity 203 and a side cavity 204. When the airflow reaches the air outlet 2, it first enters the central cavity 203, then reaches the side cavity 204, and finally is discharged into the room through the air vent 205. Figure 11 The middle arrow simply indicates the direction of airflow. The advantage of this structure is that the airflow does not blow directly vertically upwards when it first enters the room. Instead, it forms a bend through the structure of the bottom cover 202 and then rises after passing around the bottom cover 202, thus avoiding the airflow blowing directly onto the people in the room and reducing discomfort. Furthermore, this structure prevents foreign objects on the ground from falling into the air outlet 2. Even if they do fall in, they will eventually fall into the side cavity 204 and be stored there. They can be cleaned when the bottom cover 202 is lifted.

[0061] Furthermore, in this scheme, when the intake end 1 and the exhaust end 2 are arranged in opposite directions, so that the air enters from the top and exits from the bottom, it is not necessary to swap all the intake ends 1 and exhaust ends 2. Instead, the corresponding air supply branch 3 and exhaust branch 5 connected to them can be directly swapped. That is, in this case, the original intake end 1 directly becomes the exhaust end 2, and the original exhaust end 2 directly becomes the intake end 1. Figure 9 The structure shown can be placed on the ground and connected to the exhaust branch 5; therefore, this structure makes it simple, convenient and easy to implement when changing the arrangement of the intake end 1 and the exhaust end 2 in this invention.

[0062] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A laboratory exhaust air purification device, which functions indoors, characterized in that: The device comprises: a flow guide part that keeps the air flow in the room in a full longitudinal direction; a detection part that detects the location where exhaust gas is formed, and the flow guide part generates a strengthened air flow at the location where exhaust gas is formed according to the detection result, and the speed of the strengthened air flow is greater than that of the air flow.

2. The laboratory exhaust air purification device according to claim 1, characterized in that: The flow guide part comprises an air suction end and an air outlet end, which are respectively arranged on two opposite sides of the room in the longitudinal direction, the air flow enters the room through the air suction end and flows out through the air outlet end.

3. The laboratory exhaust air purification device according to claim 2, characterized in that: Further comprising: a plurality of exhaust branch lines connected to the air suction end, and the plurality of exhaust branch lines are connected to the treatment equipment; a plurality of air supply branch lines connected to the air outlet end, and the plurality of air supply branch lines are connected to the fresh air source; an adjusting part that synchronously adjusts the air supply branch lines and the exhaust branch lines connected to the air suction end and the air outlet end distributed at the same level through the adjusting part, and the detection part is connected to the adjusting part.

4. The laboratory exhaust air purification device according to claim 3, characterized in that: The adjusting part comprises a first channel and a second channel arranged in opposite fixed positions, which are respectively connected to the treatment equipment and the fresh air source, and: the first channel comprises a plurality of inlet ports connected to the plurality of exhaust branch lines; the second channel comprises a plurality of outlet ports connected to the plurality of air supply branch lines; a shielding part that synchronously shields one of the inlet ports and the outlet ports.

5. The laboratory exhaust air purification device according to claim 4, characterized in that: The shielding part is arranged in opposite active positions with the first channel and the second channel, and the shielding part synchronously shields or unshields the inlet ports and the outlet ports during the active process.

6. The laboratory exhaust air purification device according to claim 5, characterized in that: Further comprising a first driving unit, the shielding part is arranged in opposite linear active positions with the first channel and the second channel, and the first driving unit applies force to the shielding part and is connected to the detection part.

7. The laboratory exhaust air purification device according to claim 6, characterized in that: The first driving unit comprises an electromagnetic element arranged in opposite fixed positions with the first channel and the second channel, and the shielding part is configured with magnetism and is close to the electromagnetic element.

8. The laboratory exhaust air purification device according to claim 6, characterized in that: The detection part comprises a gas sensor arranged in horizontal distribution in the room and connected to the plurality of first driving units.

9. The laboratory exhaust air purification device according to claim 4, characterized in that: Further comprising a second driving element and a wind guide part for forming the air flow, and: the first channel further comprises an air outlet total port connected to the treatment equipment; the second channel further comprises an air inlet total port connected to the fresh air source; the wind guide part is arranged in the air outlet total port and the air inlet total port respectively and is connected through a transmission shaft, and the second driving element applies force to the transmission shaft.

10. The laboratory exhaust air purification device according to claim 3, characterized in that: The air suction end is alternately connected to the air supply branch line and the exhaust branch line, and the air outlet end is alternately connected to the air supply branch line and the exhaust branch line.

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