Multi-scene gas component detection sampling device
By using a detachable base and multi-layer filter structure, combined with low-speed crushing and inert gas replacement, the problems of dust pollution and cross-contamination of residues are solved, achieving efficient cleaning and accurate and reliable detection of the equipment.
Patent Information
- Application Number
- CN202522583501.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-05
AI Technical Summary
During the coal sample gas sampling and testing process, dust pollution and cross-contamination of residues shorten the equipment lifespan and result in inaccurate test results. Furthermore, the traditional structure's cleaning dead zones affect the reliability of the test.
It adopts a detachable base design and a multi-layer filter structure, combined with low-speed crushing and inert gas replacement to reduce dust pollution, and ensures detection accuracy and equipment cleanliness through multi-layer filtration and nozzle cleaning.
It effectively reduces dust pollution, improves equipment reliability and detection accuracy, extends equipment life, and ensures cleaning efficiency and continuous testing.
Smart Images
Figure CN224933706U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas equipment, and in particular to a multi-scenario gas composition detection and sampling device. Background Technology
[0002] In the process of coal sample gas sampling and testing, coal blocks are usually placed in a sealed tank and broken up by means of impact, hammering, or high-speed rotation. During this process, the violent mechanical action can easily generate a large amount of dust. The dust enters with the airflow and adheres to the exhaust pipe and sensor probe, which not only contaminates and damages the precision detection components, leading to a shortened equipment life, but also affects the accuracy of gas concentration readings due to background interference. In addition, after the test is completed, the coal dust remaining inside the tank is difficult to clean completely. Traditional fixed structures have cleaning dead zones, and the residue will continue to release residual gas and contaminate subsequent samples, affecting the reliability of continuous testing.
[0003] In addition, during the testing process, the air inside the container can affect the detection results of the gas composition, and the dust and moisture generated by the breakage can easily damage the precision sensing elements. Utility Model Content
[0004] In order to overcome the shortcomings of dust pollution of detection elements, cross-contamination of samples and residual air affecting detection results in coal gas detection sampling, this utility model provides a multi-scenario gas composition detection sampling device.
[0005] The technical implementation scheme of this utility model is as follows: a multi-scenario gas composition detection and sampling device, including a tank, a spherical cover, a circular cover plate, and a detection component installed inside the spherical cover; the spherical cover is provided above the tank; a circular cover plate is fixedly connected to the upper side of the spherical cover; it also includes a detachable base; a detachable base is installed on the lower side of the tank, and the detachable base is configured as a flat cone shape; a support frame is fixedly connected inside the tank, and the support frame is located on the upper side of the detachable base, and the support frame is fitted with the detachable base; a helical bevel gear is fixedly connected to the upper side of the support frame; a mounting frame is provided on the tank; a driving component is provided on the mounting frame; a pressure roller for crushing and turning coal blocks is movably connected to the mounting frame, and a helical bevel gear is fixedly connected to the upper side of the pressure roller and meshes with the helical bevel gear provided on the support frame.
[0006] Furthermore, a sealing ring is provided at the connection between the tank body and the detachable base.
[0007] Furthermore, a positioning block is provided on the lower side of the support frame; furthermore, a ring of locking blocks is provided on the inner side of the tank body.
[0008] Furthermore, it includes an extraction hood, a first filter screen, a second filter screen, a third filter screen, an air pump, an air supply pipe, a nozzle, a first one-way valve, and a second one-way valve; the extraction hood is fixedly connected to the lower side of the spherical cover, and the lower side of the extraction hood is inserted into the tank body, and the extraction hood is a hollow flat cone shape; a first filter screen for blocking powder particles in the gas is provided on the lower side of the extraction hood; a second filter screen for absorbing and isolating moisture is provided inside the extraction hood, and the second filter screen is located above the first filter screen; a third filter screen is provided at the opening on the upper side of the extraction hood. The third filter is located above the second filter; an air pump is installed between the detection element and the extraction hood, and the detection element and the extraction hood are connected through the air pump; an air supply pipe is connected to the lower side of the air pump, and the air supply pipe is embedded in the extraction hood; three layers of annular pipes are installed inside the extraction hood, and several downward-sloping nozzles are installed at the annular pipes, and all the annular pipes are connected to the air supply pipes; a first one-way valve is installed on the side of the air supply pipe near the air pump; a second one-way valve is installed on the lower side of the air pump, and the second one-way valve is located below the connection between the air pump and the air supply pipe.
[0009] Furthermore, the first filter screen is set to a wavy shape.
[0010] The beneficial effects of this utility model are as follows: This utility model achieves comprehensive and uniform crushing of coal blocks through the low-speed compound motion of the pressure roller, while effectively reducing dust. The detachable base facilitates thorough cleaning of residues and avoids cross-contamination. Furthermore, the insertion and connection between the positioning block and the detachable base ensures accurate positioning and stable connection during reinstallation, thus comprehensively improving the reliability of equipment operation and maintenance efficiency. The first, second, and third filters remove harmful substances such as dust and moisture from the gas, effectively preventing the harmful substances from affecting the inspection equipment and the inspection results. By setting up several nozzles to clean the first, second, and third filters, and with the pleated pre-filter design that complements the first filter, the filtration area is increased and turbulence is generated, which helps to improve filtration efficiency while significantly enhancing self-cleaning effect and filter lifespan. Attached Figure Description
[0011] Figure 1 This is a three-dimensional structural diagram of the multi-scenario gas composition detection and sampling device of this utility model; Figure 2 This is a cross-sectional view of the multi-scenario gas composition detection and sampling device of this utility model; Figure 3 This is a three-dimensional structural diagram of the tank body, detachable base, and pressure roller assembly of this utility model; Figure 4 This is a three-dimensional structural diagram of the tank body and detachable base of this utility model in their separated states. Figure 5 This is a three-dimensional structural diagram of the combination of the spherical cover, the air extraction cover, and the air supply pipe of this utility model.
[0012] Reference numerals: 1-Tank body, 2-Spherical cover, 3-Circular cover plate, 4-Detection component, 101-Removable base, 102-Support frame, 10201-Positioning block, 103-Helical bevel gear, 104-Mounting frame, 105-Drive component, 106-Pressure roller, 201-Escape hood, 202-First filter screen, 203-Second filter screen, 204-Third filter screen, 205-Air pump, 206-Air supply pipe, 207-Nozzle, 208-First check valve, 209-Second check valve. Detailed Implementation
[0013] The present invention will now be described in detail with reference to the accompanying drawings.
[0014] Example 1: Multi-scenario gas composition detection and sampling device, such as Figures 1-4 As shown in the figure, it includes a tank body 1, a spherical cover 2, a circular cover plate 3, and a testing component 4; the spherical cover 2 is installed on top of the tank body 1; the circular cover plate 3 is bolted to the upper side of the spherical cover 2; the testing component 4 is installed inside the spherical cover 2; It also includes a detachable base 101, a support frame 102, a helical bevel gear 103, a mounting frame 104, a drive component 105, and a pressure roller 106; the detachable base 101 is installed on the lower side of the tank body 1, and the detachable base 101 is configured as a flat cone shape; the support frame 102 is fixedly connected inside the tank body 1, and the support frame 102 is located on the upper side of the detachable base 101, and the support frame 102 is fitted into the detachable base 101; a helical bevel gear 103 is fixedly connected to the upper side of the support frame 102. 03; A mounting frame 104 is provided on the tank body 1; A driving component 105 is provided on the mounting frame 104; A pressure roller 106 is movably connected to the mounting frame 104, and a helical bevel gear 103 is fixedly connected to the upper side of the pressure roller 106 and meshes with the helical bevel gear 103 provided on the support frame 102. When the driving component 105 drives the pressure roller 106 to make a circular motion against the inclined surface of the detachable base 101, it rotates under the meshing action of the two helical bevel gears 103.
[0015] A sealing ring is provided at the connection between the tank body 1 and the detachable base 101.
[0016] A positioning block 10201 is provided on the lower side of the support frame 102, and the positioning block 10201 is fitted with the detachable base 101, which is conducive to the disassembly and installation of the tank body 1 and the detachable base 101. A ring of locking blocks is provided on the inner side of the tank body 1 to restrict the movement of the pressure roller 106 and prevent the pressure roller 106 from being thrown upward when it is making circular motion.
[0017] In the process of coal sample gas sampling and testing, coal blocks are usually placed in a closed device and crushed by means of impact, hammering, or high-speed rotation. This process requires violent mechanical action to crush the coal blocks, which easily generates a large amount of dust. The dust can easily enter with the airflow and adhere to the exhaust pipe and sensor probe, which not only contaminates and damages the precision detection components, leading to a shortened equipment life, but also affects the accuracy of gas concentration readings due to background interference. In addition, after a single test, the coal dust remaining inside the device is difficult to clean completely. The traditional fixed structure creates blind spots for cleaning, and the residue will continue to release residual gas and contaminate subsequent samples, affecting the reliability of continuous testing.
[0018] First, open the sealing cover at the feed inlet of tank 1, then feed the obtained coal sample into tank 1 through the feed inlet, close the sealing cover, and then start the drive unit 105 to drive the pressure roller 106 to rotate in a circular motion along the inclined surface of the detachable base 101. At the same time, under the action of the helical bevel gear 103 on the detachable base 101 and the pressure roller 106, the pressure roller 106 rotates to crush the coal. The pressure roller 106 moves at a low speed to avoid dust being raised after the coal is crushed, thereby reducing the pollution and damage to the equipment during subsequent air extraction testing and minimizing the impact on the inspection results. After the inspection is completed, the detachable base 101 can be removed, the coal and coal powder inside the tank 1 can be poured out, and the coal powder on the surface of the tank 1 and the detachable base 101 can be cleaned to reduce the impact of residual coal powder and other substances on the next inspection. This detachable base 101 facilitates the cleaning of the tank 1 and the detachable base 101. After cleaning and drying, the detachable base 101 is aligned and installed with the tank 1 under the action of the positioning block 10201, and the positioning block 10201 is inserted into the detachable base 101 to further strengthen the connection between the two.
[0019] Example 2, based on Example 1, such as Figure 5As shown, the system includes an extraction hood 201, a first filter 202, a second filter 203, a third filter 204, an air pump 205, an air supply pipe 206, a nozzle 207, a first one-way valve 208, and a second one-way valve 209. The extraction hood 201 is fixedly connected to the lower side of the spherical cover 2, and the lower side of the extraction hood 201 is inserted into the tank body 1. The extraction hood 201 is a hollow, flat cone shape. The first filter 202 is disposed on the lower side of the extraction hood 201. The second filter 203 is disposed inside the extraction hood 201, and the second filter 203 is located above the first filter 202. The third filter 204 is disposed at the upper opening of the extraction hood 201, and the third filter 204 is located above the second filter 203. A detection element 4 is attached to the extraction hood. An air pump 205 is installed between 201, and the detection component 4 is connected to the extraction hood 201 through the air pump 205; an air supply pipe 206 is connected to the lower side of the air pump 205, and the air supply pipe 206 is embedded in the extraction hood 201; a three-layer annular pipe is installed inside the extraction hood 201, and several downward-sloping nozzles 207 are installed at the annular pipes, and all the annular pipes are connected to the air supply pipe 206, so that gas can be delivered to the annular pipes through the air supply pipe 206 and then sprayed out from the nozzles 207; a first one-way valve 208 is installed on the side of the air supply pipe 206 near the air pump 205; a second one-way valve 209 is installed on the lower side of the air pump 205, and the second one-way valve 209 is located below the connection between the air pump 205 and the air supply pipe 206.
[0020] The first filter 202 is designed in a wavy shape, which can increase the filtration area and improve the filtration efficiency. At the same time, it can better withstand the impact force generated by the backflushing of gas, avoiding cracking or permanent deformation. Furthermore, the backflushing airflow will generate stronger turbulence and vibration between the peaks and valleys of the folds, which helps to shake off dust and improve the service life of the first filter 202.
[0021] The tank body 1 and the detachable base 101, as well as the tank body 1 and the exhaust hood 201, are connected by snap-fit, which ensures good clamping effect while facilitating disassembly and installation between the two.
[0022] In the precise detection of the gas composition contained in coal blocks, the coal block sample is first broken in tank 1 to collect the gas. However, the air in the container will affect the detection results of the gas composition. In addition, since some dust will inevitably be generated when the coal block sample is broken, the collected gas will be mixed with dust and moisture, which can easily damage the precision sensing elements.
[0023] To address the aforementioned issues, before placing the coal sample, the extraction hood 201 needs to be installed and fixed onto the tank 1, and sealed with clips. Then, the circular cover 3 on the spherical cover 2 is opened, and the air pump 205 inside the extraction hood 201 is connected to an external inert gas source. Inert gas is then introduced into the gas supply pipe 206 and sprayed out from the nozzle 207, allowing the inert gas to enter the tank 1. At this time, the sealing cover at the feed inlet on the tank 1 is opened, continuously supplying inert gas and expelling the air inside the tank 1 from the feed inlet. At this point, the first one-way valve 208 is open under air pressure, and the second one-way valve 209 is closed. The coal sample is then fed through the feed inlet. The gas is fed into tank 1, and the circular cover 3 and the sealing cover at the feed inlet on tank 1 are closed to prevent air from affecting the gas composition detection. After the coal is crushed in tank 1, the air pump 205 draws the gas from tank 1 into the detection element 4 for testing. When the gas passes through the first filter screen 202, small dust particles floating in the gas can be blocked by the first filter screen 202. When it passes through the second filter screen 203, the moisture in the air can be absorbed by the second filter screen 203. The third filter screen 204 serves as the final layer of filtration. The three-layer filter screen effectively avoids the influence of harmful substances on the inspection equipment and the inspection results. During the process, the first one-way valve 208 is closed under air pressure, while the second one-way valve 209 is open to prevent residual gas accumulation in the long gas delivery pipe 206. After the test is completed, the sealing cover at the inlet of the tank 1 is opened to restore the air pressure inside the tank 1 to normal. Then, the extraction hood 201 can be separated from the tank 1, and the circular cover 3 is opened to connect the air pump 205 to the outside. Air is then delivered to the gas delivery pipe 206, and the nozzle 207 sprays air onto the first filter screen 202, the second filter screen 203, and the third filter screen 204 to clean and dry them. 04. To improve the service life of the first filter 202, the second filter 203, and the third filter 204, and to reduce the impact on the next inspection, during this air jet cleaning process, the first one-way valve 208 is in the open state under the action of air pressure, and the second one-way valve 209 is in the closed state, so as to ensure that the gas can be ejected at high pressure from the nozzle 207. The first filter 202 is set in a pleated shape, which can increase the filtration area and improve the filtration efficiency. At the same time, it can better withstand the impact force generated by the gas backflushing, avoiding cracking or permanent deformation. Moreover, the backflushing airflow will generate stronger turbulence and vibration between the peaks and valleys of the pleats, which helps to shake off dust and is conducive to improving the service life of the first filter 202.
[0024] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.
Claims
1. A multi-scenario gas composition detection and sampling device, comprising a tank (1), a spherical cover (2), a circular cover plate (3), and a detection component (4) installed inside the spherical cover (2); the spherical cover (2) is provided above the tank (1); the circular cover plate (3) is fixedly connected to the upper side of the spherical cover (2); its characteristic is: It also includes a detachable base (101); a detachable base (101) is installed on the lower side of the tank body (1), and the detachable base (101) is set in the shape of a flat cone; a support frame (102) is fixedly connected inside the tank body (1), and the support frame (102) is located on the upper side of the detachable base (101), and the support frame (102) is fitted with the detachable base (101); a helical bevel gear (103) is fixedly connected on the upper side of the support frame (102); an installation frame (104) is provided on the tank body (1); a driving component (105) is provided on the installation frame (104); a pressure roller (106) for crushing and turning coal blocks is movably connected on the installation frame (104), and a helical bevel gear (103) is fixedly connected on the upper side of the pressure roller (106), and meshes with the helical bevel gear (103) provided on the support frame (102).
2. The multi-scenario gas composition detection and sampling device according to claim 1, characterized in that: A sealing ring is provided at the connection between the tank body (1) and the detachable base (101).
3. The multi-scenario gas composition detection and sampling device according to claim 1, characterized in that: A ring of locking blocks is provided on the inner side of the tank (1).
4. The multi-scenario gas composition detection and sampling device according to claim 3, characterized in that: It includes an extraction hood (201), a first filter (202), a second filter (203), a third filter (204), an air pump (205), an air supply pipe (206), a nozzle (207), a first check valve (208), and a second check valve (209); the extraction hood (201) is fixedly connected to the lower side of the spherical cover (2), and the lower side of the extraction hood (201) is inserted into the tank (1), and the extraction hood (201) is a hollow flat cone shape; a first filter (202) for blocking powder particles in the gas is provided on the lower side of the extraction hood (201); a second filter (203) for absorbing and isolating moisture is provided inside the extraction hood (201), and the second filter (203) is located above the first filter (202); a third filter (204) is provided at the upper opening of the extraction hood (201), and the third filter... The screen (204) is located above the second filter screen (203); an air pump (205) is provided between the detection component (4) and the extraction hood (201), and the detection component (4) and the extraction hood (201) are connected through the air pump (205); an air supply pipe (206) is connected to the lower side of the air pump (205), and the air supply pipe (206) is embedded in the extraction hood (201); a three-layer annular pipe is provided inside the extraction hood (201), and several downward-sloping nozzles (207) are provided at the annular pipes, and all the annular pipes are connected to the air supply pipe (206); a first one-way valve (208) is installed on the side of the air supply pipe (206) near the air pump (205); a second one-way valve (209) is installed on the lower side of the air pump (205), and the second one-way valve (209) is located below the connection between the air pump (205) and the air supply pipe (206).
5. The multi-scenario gas composition detection and sampling device according to claim 4, characterized in that: The first filter (202) is set to a wavy shape.