A large volume atmospheric gas collection sampling device

Abstract

The application discloses a large gas volume collecting and sampling device, and belongs to the technical field of gas collecting and sampling. The device mainly comprises a bottom plate and a collecting box. The collecting box is fixed on the top of the bottom plate. A collecting pipe is in communication with the inside of the collecting box. A supporting block is fixed on the outside of the collecting pipe. A guide assembly is arranged in the inside of the supporting block. A guide plate is slidably connected to the outside of the guide assembly. A valve leaf is fixed on the inner wall of the guide plate. The large gas volume collecting and sampling device provided by the application drives the guide ring connected to the handle to slide along the inner wall of the supporting block by pulling the handle. The linear displacement of the guide ring is converted into the rotary motion of the guide plate. The guide plate further drives the valve leaf to rotate synchronously in the collecting pipe. When the valve leaf is opened or closed to the target angle, the limiting rod is inserted into the preset limiting groove outside the collecting pipe through the positioning hole on the handle, and locking is formed, so that the flow regulation and balance are realized.

Description

Technical Field

[0001] This application relates to the field of gas collection and sampling technology, specifically a large-volume gas collection and sampling device. Background Technology

[0002] Large gas volume usually refers to the total volume of gas passing through a certain cross section or system within a unit of time, which is relatively large. It is generally measured in cubic meters per minute or cubic meters per hour. In industrial emission monitoring, large gas volume is commonly seen in large chimneys, chemical reaction vessels or smelting furnaces, and the emission flow rate of a single device can reach tens to hundreds of cubic meters per minute.

[0003] In large-volume gas scenarios, the gas composition may contain pollutants, harmful substances, or key monitoring indicators. If these are not captured in a timely manner by professional collection and sampling devices, it may lead to data loss or the spread of environmental hazards. The device can capture representative gas samples to provide reliable evidence for pollution source tracing, compliance monitoring, or scientific research analysis, avoiding errors and sample failure. Existing large-volume gas collection and sampling devices usually adopt fixed flow channels or simple flow-limiting orifice designs. Their core structure relies on pipe diameter, fan power, or constant flow orifice plates to achieve basic flow control, lacking a separate flow regulation function, making it difficult to achieve flow control and dynamic balance.

[0004] Therefore, it is necessary to provide a large-volume gas collection and sampling device to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is: to provide a large gas volume collection and sampling device that achieves the effect of individual flow rate regulation / solves the problem of flow control.

[0007] The technical solution adopted by this application to solve its technical problem is: a large gas volume collection and sampling device, including a base plate and a collection box, the collection box being fixed to the top of the base plate, a collection pipe being connected inside the collection box, a support block being fixed to the outside of the collection pipe, a guide component being provided inside the support block, a guide plate being slidably connected to the outside of the guide component, a valve leaf being fixed to the inner wall of the guide plate, a limit rod being provided inside the guide component, a disassembly component being provided inside the collection box, and a filter screen being provided inside the disassembly component;

[0008] A collection component is disposed on the top of the base plate, and an air outlet pipe is provided on one side of the collection component. One end of the air outlet pipe is connected to a diversion pipe.

[0009] A collection tube is connected to one end of a diversion tube. A sealing assembly is provided on the outside of the collection tube, and a bolt is provided on the top of the sealing assembly. One end of the collection tube is connected to a collection tank.

[0010] Furthermore, the guide assembly includes a guide ring slidably connected to the inner wall of the support block, a handle is fixed to the outer side of the guide ring, and the inner wall of the handle is inserted into the outer side of the limiting rod.

[0011] Furthermore, the disassembly assembly includes a disassembly plate slidably connected to the inner wall of the collection box, a sealing plate fixed to the top of the disassembly plate, the inner wall of the disassembly plate being fixed to the outer side of the filter screen, and the bottom of the sealing plate being snapped into the top of the collection box.

[0012] Furthermore, the collection assembly includes an air pump fixed to the top of the base plate, the air pump having an air inlet connected to an air inlet pipe, one end of the air inlet pipe being connected to the inner wall of the collection box, and the air pump having an air outlet connected to one end of the air outlet pipe.

[0013] Furthermore, the sealing assembly includes a clamping plate fixed to the outside of the collection tube, a buckle plate fixed to the outside of the diversion tube, and the outside of the clamping plate engaging with the inner wall of the buckle plate, and the tops of the clamping plate and the buckle plate being threadedly connected to the outside of the bolt, respectively.

[0014] Furthermore, a support frame is fixed to the top of the base plate, and a connecting rod is slidably connected to the inner wall of the support frame.

[0015] Furthermore, a spring is fixed to one side of the support frame, a limit ring is fixed to one end of the connecting rod, and the other end of the spring is fixed to one side of the limit ring.

[0016] The beneficial effects of this application are as follows: The large gas volume collection and sampling device provided by this application drives the guide ring connected to it to slide directionally along the inner wall of the support block by pulling the handle. The linear displacement of the guide ring is converted into the rotational motion of the guide plate. The guide plate further drives the valve leaf to rotate synchronously in the collection tube. When the valve leaf opens to the target angle, the limiting rod passes through the positioning hole on the handle and is inserted into the preset limiting groove on the outside of the collection tube to form a lock, thereby realizing flow regulation and balance.

[0017] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0019] Figure 1This is an overall schematic diagram of a large-volume gas collection and sampling device according to this application;

[0020] Figure 2 This is a schematic diagram of the guide assembly and disassembly assembly of a large gas volume collection and sampling device according to this application;

[0021] Figure 3 This is a schematic diagram of the collection components of a large-volume gas collection and sampling device according to this application;

[0022] Figure 4 This is a schematic diagram of the sealing assembly of a large-volume gas collection and sampling device according to this application;

[0023] Figure 5 This is a schematic diagram of the limiting ring of a large gas volume collection and sampling device according to this application;

[0024] The following are the labeling elements in the figure:

[0025] 1. Base plate; 2. Collection box; 3. Collection pipe; 4. Support block; 5. Guide assembly; 51. Guide ring; 52. Handle; 6. Guide plate; 7. Valve leaf; 8. Limiting rod; 9. Disassembly assembly; 91. Disassembly plate; 92. Sealing plate; 10. Filter screen; 11. Collection assembly; 111. Air pump; 112. Inlet pipe; 12. Outlet pipe; 13. Diverter pipe; 14. Collection pipe; 15. Sealing assembly; 151. Clamping plate; 152. Buckle plate; 16. Bolt; 17. Collection tank; 18. Support frame; 19. Connecting rod; 20. Spring; 21. Limiting ring. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0028] like Figure 1-5As shown, this application provides a large gas volume collection and sampling device, including a base plate 1 and a collection box 2. The collection box 2 is fixed to the top of the base plate 1. The collection box 2 is connected to a collection pipe 3. A support block 4 is fixed to the outside of the collection pipe 3. A guide component 5 is provided inside the support block 4. A guide plate 6 is slidably connected to the outside of the guide component 5. A valve leaf 7 is fixed to the inner wall of the guide plate 6. A limit rod 8 is provided inside the guide component 5. A disassembly component 9 is provided inside the collection box 2. A filter screen 10 is provided inside the disassembly component 9. In terms of flow regulation, the guide plate 6 is driven to rotate by the guide component 5. The guide plate 6 drives the valve leaf 7 to rotate synchronously inside the collection pipe 3. When the valve leaf 7 is opened to the target angle, the limit rod 8 is inserted through the guide component 5 into the preset limit groove on the outside of the collection pipe 3 to form a lock, thereby realizing stepless flow regulation and dynamic balance. In terms of disassembling the filter screen 10, the filter screen 10 is separated from the collection box 2 by sliding the disassembly component 9 out of the collection box 2 and unhooking it.

[0029] It should be noted that: the inner wall of the base plate 1 is provided with a positioning groove. The collection tank 17 is embedded in the positioning groove of the base plate 1 to achieve the effect of preliminary positioning. The outer side of the collection tube 3 is provided with multiple limiting grooves. When the valve leaf 7 is adjusted to a suitable angle, the limiting rod 8 passes through the handle 52 and is inserted into the preset limiting groove on the outer side of the collection tube 3 to lock the handle 52.

[0030] The collection component 11 is located on the top of the base plate 1. An outlet pipe 12 is provided on one side of the collection component 11. One end of the outlet pipe 12 is connected to a diversion pipe 13. The gas in the collection box 2 is drawn out through the inlet pipe 112 by the collection component 11, and the gas then flows through the outlet pipe 12 into the diversion pipe 13, thereby realizing the directional flow and uniform distribution of the gas.

[0031] The sampling tube 14 is connected to one end of the diversion tube 13. A sealing component 15 is provided on the outside of the sampling tube 14, and a bolt 16 is provided on the top of the sealing component 15. One end of the sampling tube 14 is connected to the sampling tank 17. The diversion tube 13 distributes the gas evenly to the sampling tube 14, and finally flows into the sampling tank 17, realizing sampling and storage. The gap is filled by the locking of the sealing component 15. When the bolt 16 is tightened, axial pressure is applied to make the diversion tube 13 and the sampling tube 14 fit tightly, forming a double sealing barrier, which effectively avoids sampling errors caused by gas leakage and the mixing of external impurities, and ensures data stability.

[0032] The guide assembly 5 includes a guide ring 51 slidably connected to the inner wall of the support block 4. A handle 52 is fixed to the outer side of the guide ring 51, and the inner wall of the handle 52 is inserted into the outer side of the limiting rod 8. When it is necessary to adjust the collected flow rate, by pulling the handle 52, the guide ring 51 connected to it is driven to slide directionally along the inner wall of the support block 4. The linear displacement of the guide ring 51 is converted into the rotational motion of the guide plate 6. The guide plate 6 further drives the valve leaf 7 to rotate synchronously in the collection tube 3. When the valve leaf 7 is opened to the target angle, the limiting rod 8 passes through the handle 52 and is inserted into the preset limiting groove on the outer side of the collection tube 3 to form a lock, thereby realizing flow rate adjustment and balance.

[0033] The disassembly assembly 9 includes a disassembly plate 91 that is slidably connected to the inner wall of the collection box 2. A sealing plate 92 is fixed to the top of the disassembly plate 91, and the inner wall of the disassembly plate 91 is fixed to the outer side of the filter screen 10. The bottom of the sealing plate 92 is engaged with the top of the collection box 2. When cleaning is required, the sealing plate 92 is pulled to release the engagement with the collection box 2, which causes the disassembly plate 91 to slide out along the collection box 2, so that the filter screen 10 is separated from the collection box 2, thus realizing the quick and non-destructive disassembly of the filter screen 10.

[0034] It should be noted that the filter screen 10 is made of nylon or stainless steel. It filters gas through the interception effect. That is, when the particles in the gas move along the airflow to the vicinity of the fiber surface, if the distance from the streamline to the fiber surface is less than the particle radius, the particles will be intercepted and deposited on the fiber, thereby purifying the gas.

[0035] The collection assembly 11 includes an air pump 111 fixed to the top of the base plate 1. The air pump 111 has an air inlet pipe 112 connected to its air inlet end, and one end of the air inlet pipe 112 is connected to the inner wall of the collection box 2. The air pump 111 has an air outlet end connected to one end of the air outlet pipe 12. When gas collection is required, the air pump 111 is started. External gas is drawn in through the collection pipe 3, and after being filtered by the filter screen 10 to intercept particulate matter and achieve preliminary purification, it enters the collection box 2. Under the continuous drive of the air pump 111, the gas is directionally extracted through the air inlet pipe 112 and then transported to the diversion pipe 13 through the air outlet pipe 12. The diversion pipe 13 distributes the gas to the collection pipe 14 and finally flows into the collection tank 17 to complete the storage, thus realizing sampling and storage.

[0036] The sealing assembly 15 includes a clamping plate 151 fixed to the outside of the collection tube 14, and a buckle plate 152 fixed to the outside of the diversion tube 13. The outer side of the clamping plate 151 is engaged with the inner wall of the buckle plate 152, and the tops of the clamping plate 151 and the buckle plate 152 are respectively threaded to the outer side of the bolt 16. Through the engagement of the clamping plate 151 and the buckle plate 152, axial pressure is applied when the bolt 16 is tightened, so that the diversion tube 13 and the collection tube 14 are tightly fitted, forming a double sealing barrier, which effectively avoids sampling errors caused by gas leakage and the mixing of external impurities, and ensures data stability.

[0037] A support frame 18 is fixed to the top of the base plate 1. A connecting rod 19 is slidably connected to the inner wall of the support frame 18. The connecting rod 19 slides along the support frame 18 to provide guidance and restriction for the subsequent limiting collection tank 17.

[0038] A spring 20 is fixed to one side of the support frame 18, and a limit ring 21 is fixed to one end of the connecting rod 19. The other end of the spring 20 is fixed to one side of the limit ring 21. In the fixing process of the collection tank 17, the collection tank 17 is first embedded into the positioning groove on the base plate 1 to achieve initial positioning and fixing. During the embedding process, the outer wall of the collection tank 17 will push the limit ring 21 to move, thereby compressing the spring 20 connected to it. After being compressed, the spring 20 accumulates elastic potential energy and then exerts a reverse force to push the limit ring 21. Under the action of the spring 20, the limit ring 21 drives the connecting rod 19 to slide smoothly along the track set by the support frame 18 until the limit ring 21 is tightly attached to the surface of the collection tank 17, forming a stable secondary fixation, ensuring that the collection tank 17 always maintains a stable state during the gas collection process.

[0039] Working Principle: When using the main unit, the operator first embeds the collection tank 17 into the positioning groove of the base plate 1 to complete the initial positioning. During this process, the outer wall of the collection tank 17 pushes the limiting ring 21 to move, compressing the connected spring 20, allowing it to accumulate elastic potential energy. The spring 20 then exerts force in the opposite direction, pushing the limiting ring 21 to drive the connecting rod 19 to slide smoothly along the track of the support frame 18 until the limiting ring 21 is tightly attached to the surface of the collection tank 17, forming a stable secondary fixation, effectively preventing the collection tank 17 from shaking or displacing during the collection process. Next, the connection between the diversion pipe 13 and the collection pipe 14 is performed. Through the snap-fit ​​of the clamping plate 151 and the buckle plate 152, combined with the axial pressure applied when the bolt 16 is tightened, the two pipe interfaces are tightly fitted, forming a double sealing barrier. This effectively avoids sampling errors caused by gas leakage, while preventing external impurities from mixing in, ensuring the purity of the collected gas. After completing the pipeline connection, the collection flow rate is adjusted according to the actual gas flow rate requirements. Pulling the handle 52 drives the guide ring 51 to slide directionally along the inner wall of the support block 4, converting the linear displacement into the rotational motion of the guide plate 6, which in turn drives the valve leaf 7 to rotate synchronously in the collection pipe 3. When the valve leaf 7 opens to the target angle, the limiting rod 8 passes through the handle 52 and is inserted into the limiting groove on the outside of the collection pipe 3 to form a lock, thereby achieving flow rate adjustment and balance. During the gas collection stage, the air pump 111 is started, and external gas is drawn in through the collection pipe 3. After passing through the filter screen 10 to intercept particulate matter and achieving preliminary purification, it enters the collection box 2. Under the continuous drive of the air pump 111, the gas is directionally extracted through the inlet pipe 112 and then transported to the diversion pipe 13 through the outlet pipe 12. The diversion pipe 13 evenly distributes the gas to each collection pipe 14 and finally flows into the collection tank 17 for storage, ensuring the reliability of the sampling data.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A large-volume gas collection and sampling device, comprising a base plate (1), characterized in that, Also includes: A collection box (2) is fixed to the top of the base plate (1). The inside of the collection box (2) is connected to a collection pipe (3). A support block (4) is fixed to the outside of the collection pipe (3). A guide component (5) is provided inside the support block (4). A guide plate (6) is slidably connected to the outside of the guide component (5). A valve leaf (7) is fixed to the inner wall of the guide plate (6). A limit rod (8) is provided inside the guide component (5). A disassembly component (9) is provided inside the collection box (2). A filter screen (10) is provided inside the disassembly component (9). A collection component (11) is provided on the top of the base plate (1). An air outlet pipe (12) is provided on one side of the collection component (11), and one end of the air outlet pipe (12) is connected to a diversion pipe (13). A collection tube (14) is connected to one end of a diversion tube (13). A sealing assembly (15) is provided on the outside of the collection tube (14). A bolt (16) is provided on the top of the sealing assembly (15). One end of the collection tube (14) is connected to a collection tank (17).

2. The large-volume gas collection and sampling device according to claim 1, characterized in that: The guide assembly (5) includes a guide ring (51) slidably connected to the inner wall of the support block (4), and a handle (52) is fixed to the outer side of the guide ring (51), and the inner wall of the handle (52) is inserted into the outer side of the limiting rod (8).

3. The large-volume gas collection and sampling device according to claim 1, characterized in that: The disassembly assembly (9) includes a disassembly plate (91) slidably connected to the inner wall of the collection box (2). A sealing plate (92) is fixed to the top of the disassembly plate (91), and the inner wall of the disassembly plate (91) is fixed to the outer side of the filter screen (10). The bottom of the sealing plate (92) is engaged with the top of the collection box (2).

4. The large-volume gas collection and sampling device according to claim 1, characterized in that: The collection assembly (11) includes an air pump (111) fixed to the top of the base plate (1). The air pump (111) has an air inlet pipe (112) connected to its air inlet end, and one end of the air inlet pipe (112) is connected to the inner wall of the collection box (2). The air outlet end of the air pump (111) is connected to one end of the air outlet pipe (12).

5. A large-volume gas collection and sampling device according to claim 1, characterized in that: The sealing assembly (15) includes a clamping plate (151) fixed to the outside of the collection tube (14), a buckle plate (152) fixed to the outside of the diversion tube (13), and the outside of the clamping plate (151) is engaged with the inner wall of the buckle plate (152), and the tops of the clamping plate (151) and the buckle plate (152) are respectively threaded to the outside of the bolt (16).

6. A large-volume gas collection and sampling device according to claim 1, characterized in that: The top of the base plate (1) is fixed with a support frame (18), and the inner wall of the support frame (18) is slidably connected with a connecting rod (19).

7. A large-volume gas collection and sampling device according to claim 6, characterized in that: A spring (20) is fixed to one side of the support frame (18), a limit ring (21) is fixed to one end of the connecting rod (19), and the other end of the spring (20) is fixed to one side of the limit ring (21).

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