Smoke intensity detection device
By introducing a cleaning rod and a gear drive system into the smoke detection device, the inner wall of the detection tube is automatically cleaned, solving the problem of difficult removal of deposits on the inner wall of the detection tube, and improving measurement accuracy and cleaning efficiency.
Patent Information
- Application Number
- CN202422081364.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-08-27
AI Technical Summary
After long-term use, the black matter deposited on the inner wall of the detection tube of the existing smoke detection device is difficult to remove, affecting the measurement accuracy. The existing cleaning method is ineffective and cumbersome to operate.
A smoke detection device was designed. A cleaning rod was used to make circular motion in the detection tube. Automatic cleaning was achieved by combining gears and a driver. A detachable transparent lens was used to prevent particle adhesion. An optical signal transmitter and receiver was used for transmittance detection.
It achieves efficient cleaning of the inner wall of the detection tube, avoids the long-term deposition of black matter, and ensures measurement accuracy and ease of operation.
Smart Images
Figure CN223361994U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of detection, in particular to a smoke detection device. Background Art
[0002] As environmental protection departments pay more and more attention to the excessive emission of motor vehicle exhaust, it is usually necessary to conduct smoke density testing on the exhaust emitted by motor vehicles on the road.
[0003] The smoke detection device works on the physical principle of light attenuation. A beam of light is blocked by exhaust gas particles, and the intensity of the light beam is inversely proportional to its length. The degree of exhaust gas absorption of light is measured to determine the degree of environmental pollution caused by exhaust smoke.
[0004] In smoke detectors, a large amount of black matter deposits on the inner wall of the detector tube after prolonged use. This deposit reduces light transmittance and thus affects the device's measurement accuracy. After a period of use, the inner wall of the detector tube needs to be cleaned. Existing detector tubes are typically cleaned manually by inserting a soft-bristled brush through the smoke outlet. This cleaning method only removes floating dust from the inner wall of the tube, but not the deposited black matter, resulting in poor cleaning effectiveness. After extended use, the detector tube must be disassembled for deep cleaning, which is quite cumbersome. Utility Model Content
[0005] In response to the above-mentioned defects, the purpose of the present utility model is to provide a smoke detection device, which can detect the transmittance of exhaust gas. The cleaning rod can clean the black matter deposited on the inner wall of the detection tube and remove it from the inner wall of the detection tube, thereby avoiding the long-term deposition of black matter on the inner wall of the detection tube and affecting the accuracy of the measurement.
[0006] To achieve the above-mentioned object, the utility model provides a smoke detection device, comprising a detection tube, wherein a smoke inlet pipe is provided in the middle of the detection tube; the detection tube is provided with two smoke outlet pipes respectively located on both sides of the smoke inlet pipe; the detection tube is connected to a base; a first end of the detection tube is connected to the outer ring of a first rolling bearing; one side of the inner ring of the first rolling bearing is connected to a plurality of cleaning rods located in the detection tube, and the other side is connected to an outer gear ring; the outer gear ring is meshed with a gear; the gear is connected to a rotating shaft of a driver; and the driver is connected to the base;
[0007] The first port and the second port of the detection tube are both provided with an optical signal transmitter and receiver connected to the base; and a detachable transparent lens for sealing the detection tube is provided between the two optical signal transmitter and receiver and the detection tube.
[0008] According to the smoke detection device of the present invention, the second port of the detection tube is connected to the outer ring of the second rolling bearing; and the cleaning rods are connected to the inner ring of the second rolling bearing.
[0009] According to the smoke detection device of the present invention, a first cleaner connected to the detection tube is provided at the inner wall of the outer gear ring and the inner wall of the first rolling bearing; a second cleaner connected to the detection tube is provided at the inner wall of the second rolling bearing.
[0010] According to the smoke detection device of the present invention, a slider is provided at the bottom of the two transparent lenses; the two sliders are provided with matching guide rails; the two guide rails are connected to the base; and the sliders are provided with a limiting device connected to the base.
[0011] According to the smoke detection device of the present invention, a plurality of supporting legs are provided at the bottom of the base; the two smoke outlet pipes are both located between the detection pipe and the base; and the two smoke outlet pipes pass through the base to communicate with the outside world.
[0012] According to the smoke detection device of the present invention, the two smoke outlet pipes are symmetrical with respect to the smoke inlet pipe; and the connection position between the smoke outlet pipe and the detection pipe is far away from the smoke inlet pipe.
[0013] According to the smoke detection device of the present invention, the base is connected to the protective shell; the smoke inlet pipe passes through the protective shell to communicate with the outside world; and two through holes for the transparent lens to pass through are respectively provided on the protective shell.
[0014] The utility model provides a smoke detection device, comprising a detection tube, a smoke inlet pipe is arranged in the middle position of the detection tube, and the smoke inlet pipe can pass the exhaust gas discharged from the exhaust pipe of the automobile into the detection tube; the detection tube is provided with two smoke outlet pipes respectively located on both sides of the smoke inlet pipe, and the smoke outlet pipes are connected to the outside world and can discharge the exhaust gas in the detection tube to the outside world; the detection tube is connected to a base, and the base can fix the detection tube; the first port position of the detection tube is connected to the outer ring of a first rolling bearing, one side of the inner ring of the first rolling bearing is connected to a plurality of cleaning rods located in the detection tube, and the other side is connected to an outer gear ring, the outer gear ring is meshed with the gear, and the first rolling bearing can make the cleaning rod perform a circular motion inside the detection tube to clean the inner wall of the detection tube, and the rotation of the gear can drive the outer ring to rotate. The rotation of the gear ring causes the cleaning rod to move in a circular motion; the gear is connected to the rotating shaft of the driver, and the driver is connected to the base. The base fixes the driver to prevent the driver from changing its position during operation, and the driver can drive the gear to rotate; the first port and the second port of the detection tube are both provided with an optical signal transmitter and receiver connected to the base, and the optical signal transmitter and receiver can detect the transmittance of the exhaust gas inside the detection tube; a detachable transparent lens for sealing the detection tube is provided between the two optical signal transmitter and receiver and the detection tube, and the transparent lens can prevent the exhaust gas from contacting the optical signal transmitter and receiver, thereby preventing particulate matter from adhering to the optical signal transmitter and receiver. The detachable transparent lens is convenient for wiping and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural diagram of the utility model;
[0016] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the protective shell;
[0017] Figure 3 yes Figure 2 Front view of
[0018] Figure 4 yes Figure 3 Schematic diagram of the structure of part A;
[0019] Figure 5 yes Figure 2 A top view of
[0020] Figure 6 yes Figure 3 BB position cross-sectional view;
[0021] Figure 7 yes Figure 5 Cross-sectional view of CC position;
[0022] In the figure: 1-limiting device, 2-protective shell, 3-smoke inlet pipe, 4-transparent lens, 5-smoke outlet pipe, 6-base, 7-support leg, 8-driver, 9-guide rail, 10-optical signal transmitter and receiver, 11-gear, 12-outer gear ring, 13-first rolling bearing, 14-detection tube, 15-second rolling bearing, 16-optical signal direction, 17-slider, 18-second cleaner, 19-cleaning rod, 20-first cleaner. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0024] See also Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 The utility model provides a smoke detection device, which includes a detection tube 14, which can provide a channel for exhaust gas and detection light. The middle position of the detection tube 14 is fixedly connected to the smoke inlet pipe 3, which can pass the exhaust gas discharged from the automobile exhaust pipe into the detection tube 14. Two smoke outlet pipes 5 are respectively located on both sides of the smoke inlet pipe 3 and fixedly connected to the detection tube 14. The two smoke outlet pipes 5 can discharge the exhaust gas in the detection tube 14 to the outside. The detection tube 14 is fixedly connected to the base 6, which can provide fixed support for the detection tube 14. The first port of the detection tube 14 is fixedly connected to the outer ring of the first rolling bearing 13. The inner ring of the first rolling bearing 13, near the detection tube 14, is fixedly connected to two cleaning rods 19 located inside the detection tube 14. The two cleaning rods 19 are equal in length to the inner wall of the detection tube 14 and contact the inner wall of the detection tube 14. The other side of the inner ring of the first rolling bearing 13 is fixedly connected to the outer gear ring 12. The inner ring of the first rolling bearing 13 can rotate, allowing the cleaning rods 19 thereon to make a circular motion to clean the inner wall of the detection tube 14. The outer gear ring 12 is responsible for driving the inner ring of the first rolling bearing 13 to rotate. The driver 8 is fixedly connected to the base 6. The rotating shaft of the driver 8 is fixedly connected to the gear 11. The gear 11 meshes with the outer gear ring 12. The driver 8 can drive the gear 11 to rotate, thereby driving the outer gear ring 12 to rotate. The driver 8 drives the gear 11 to rotate, and the gear 11 engages with the outer ring gear 12 to drive the outer ring gear 12 to rotate. The inner ring of the first rolling bearing 13 fixedly connected to the outer ring gear 12 rotates to drive the cleaning rod 19 to make a circular motion to clean the inner wall of the detection tube 14.
[0025] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 7 Preferably, the first and second ports of the detection tube 14 of the present invention are both provided with optical signal transmitters and receivers 10 fixedly connected to the base 6. The optical signal transmitters and receivers 10 are capable of transmitting optical signals and transmitting them through the optical channel within the detection tube 14, where they are then detected by another optical signal transmitter and receiver 10. The optical signal direction 16 is parallel to the axial direction of the detection tube. A removable transparent lens 4 for sealing the detection tube 14 is provided between the two optical signal transmitters and receivers 10 and the detection tube 14. The two transparent lenses 4 are respectively located at the two exits of the detection tube 14 channel. Sliders 17 are fixed to the bottom of the two transparent lenses 4. Both sliders 17 are provided with cooperating guide rails 9, which are fixedly connected to the base 6. Two limiting devices 1 are fixed to the base 6 to limit the movement of the two sliders 17, preventing the transparent lenses 4 from detaching from the smoke detection device during use. The transparent lenses 4 can be installed and removed from the smoke detection device through the cooperation of the guide rails 9, the sliders 17, and the limiting devices 1.
[0026] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 Furthermore, the second port of the detection tube 14 of the present invention is fixedly connected to the outer ring of the second rolling bearing 15, and the cleaning rod 19 is fixedly connected to the inner ring of the second rolling bearing 15. The provision of the second rolling bearing 15 can prevent the end of the cleaning rod 19 away from the first rolling bearing 13 from deforming and losing contact with the inner wall of the detection tube 14 during long-term use. A first cleaner 20 fixedly connected to the detection tube 14 is provided at the inner wall of the outer ring gear 12 and the inner wall of the first rolling bearing 13, and a second cleaner 18 fixedly connected to the detection tube 14 is provided at the inner wall of the second rolling bearing 15. The first cleaner 20 can clean the inner wall of the outer ring gear 12 and the inner wall of the first rolling bearing 13 as they rotate, preventing the long-term adhesion of black matter to the inner wall of the outer ring gear 12 and the inner wall of the first rolling bearing 13. The second cleaner 18 is responsible for cleaning the inner wall of the second rolling bearing 15. The first cleaner 20 and the second cleaner 18 do not interfere with the moving cleaning rod 19. Four supporting legs 7 are fixedly set at the bottom of the base 6. The two smoke outlet pipes 5 are located between the detection tube 14 and the base 6. The two smoke outlet pipes 5 pass through the base 6 to connect to the outside world. The setting of the supporting legs 7 can create a gap between the base 6 and the ground, preventing the ground from blocking the smoke outlet pipe 5 and causing the exhaust gas in the detection tube 14 to be unable to be discharged.
[0027] See also Figure 1 、 Figure 2 、 Figure 3Furthermore, the two smoke outlet pipes 5 of the present invention are symmetrical with respect to the smoke inlet pipe 3. The symmetrical arrangement of the two smoke outlet pipes 5 can make the distance between the two smoke outlet pipes 5 and the smoke inlet pipe 3 equal, so that the exhaust gas can be discharged relatively evenly from the two smoke outlet pipes 5. The fixed connection position of the smoke outlet pipe 5 and the detection tube 14 is far away from the smoke inlet pipe 3, which can leave a flue of sufficient length for the exhaust gas to facilitate detection. The base 6 is fixedly connected to the protective shell 2, and the protective shell 2 protects the components on the base 6 inside to prevent damage to the components on the base 6 or dust from entering. The smoke inlet pipe 3 passes through the protective shell 2 to connect to the outside world, so as to prevent the protective shell 2 from blocking the function of the smoke inlet pipe 3. Two through holes are respectively provided on the protective shell 2 for the transparent lens 4 to pass through, and the through holes can facilitate the disassembly of the transparent lens 4.
[0028] Working Principle: The smoke inlet pipe 3 is connected to the vehicle exhaust pipe. Exhaust gas continuously enters the detection tube 14 and is then discharged through the smoke outlet pipe 5. The exhaust gas in the detection tube 14 is detected by the optical signal transmitter and receiver 10. When cleaning the inner wall of the detection tube 14, the driver 8 is turned on. The driver 8 drives the cleaning rod 19 to move in a circular motion, forming a relative motion with the inner wall of the detection tube 14 to remove black matter attached to the inner wall of the detection tube 14. At the same time, the first cleaner 20 forms a relative motion with the inner wall of the outer ring gear 12 and the inner wall of the first rolling bearing 13 to remove black matter attached to the inner wall of the outer ring gear 12 and the inner wall of the first rolling bearing 13. The second cleaner 18 forms a relative motion with the inner wall of the second rolling bearing 15 to remove black matter attached to the inner wall of the second rolling bearing 15. After the black matter is removed, the smoke inlet pipe 3 can be connected to an external fan to discharge the black matter from the smoke outlet pipe 5. After the black matter is discharged, the transparent lens 4 is removed and wiped clean to complete the cleaning process.
[0029] In summary, the utility model provides a smoke detection device, including a detection tube, a smoke inlet pipe is arranged in the middle position of the detection tube, and the smoke inlet pipe can pass the exhaust gas discharged from the exhaust pipe of the car into the detection tube; the detection tube is provided with two smoke outlet pipes respectively located on both sides of the smoke inlet pipe, and the smoke outlet pipes are connected to the outside world and can discharge the exhaust gas in the detection tube to the outside world; the detection tube is connected to the base, and the base can fix the detection tube; the first port position of the detection tube is connected to the outer ring of the first rolling bearing, one side of the inner ring of the first rolling bearing is connected to several cleaning rods located in the detection tube, and the other side is connected to the outer gear ring, the outer gear ring is engaged with the gear, and the first rolling bearing can make the cleaning rod perform a circular motion inside the detection tube to clean the inner wall of the detection tube, and the rotation of the gear can The outer gear ring is driven to rotate, thereby causing the cleaning rod to move in a circular motion; the gear is connected to the rotating shaft of the driver, and the driver is connected to the base. The base fixes the driver to prevent the driver from changing its position during operation, and the driver can drive the gear to rotate; the first port and the second port of the detection tube are both provided with an optical signal transmitter and receiver connected to the base, and the optical signal transmitter and receiver can detect the transmittance of the exhaust gas inside the detection tube; a detachable transparent lens for sealing the detection tube is provided between the two optical signal transmitter and receiver and the detection tube, and the transparent lens can prevent the exhaust gas from contacting the optical signal transmitter and receiver, thereby preventing particulate matter from adhering to the optical signal transmitter and receiver. The detachable transparent lens is convenient for wiping and cleaning.
[0030] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.
Claims
1. A smoke detection device, characterized in that: The invention comprises a detection tube, wherein a smoke inlet pipe is provided in the middle of the detection tube; the detection tube is provided with two smoke outlet pipes respectively located on both sides of the smoke inlet pipe; the detection tube is connected to a base; a first end of the detection tube is connected to the outer ring of a first rolling bearing; one side of the inner ring of the first rolling bearing is connected to a plurality of cleaning rods located in the detection tube, and the other side is connected to an outer gear ring; the outer gear ring is meshed with a gear; the gear is connected to a rotating shaft of a driver; and the driver is connected to the base; The first port and the second port of the detection tube are both provided with an optical signal transmitter and receiver connected to the base; A detachable transparent lens for sealing the detection tube is provided between the two optical signal transmitters and receivers and the detection tube.
2. The smoke detection device according to claim 1, characterized in that: The second port position of the detection tube is connected to the outer ring of the second rolling bearing; and the cleaning rods are all connected to the inner ring of the second rolling bearing.
3. The smoke detection device according to claim 2, characterized in that: A first cleaner connected to a detection tube is provided at the inner wall of the outer gear ring and the inner wall of the first rolling bearing; a second cleaner connected to a detection tube is provided at the inner wall of the second rolling bearing.
4. The smoke detection device according to claim 1, characterized in that: The bottoms of the two transparent lenses are both provided with sliders; the two sliders are both provided with matching guide rails; the two guide rails are both connected to the base; and the sliders are both provided with a limiting device connected to the base.
5. The smoke detection device according to claim 1, characterized in that: A plurality of supporting legs are provided at the bottom of the base; the two smoke outlet pipes are both located between the detection tube and the base; and the two smoke outlet pipes pass through the base to communicate with the outside world.
6. The smoke detection device according to claim 5, characterized in that: The two smoke outlet pipes are symmetrical with respect to the smoke inlet pipe; and the connection position between the smoke outlet pipe and the detection pipe is far away from the smoke inlet pipe.
7. The smoke detection device according to claim 1, characterized in that: The base is connected to the protective shell; the smoke inlet pipe passes through the protective shell and is connected to the outside world; and two through holes for the transparent lens to pass through are respectively provided on the protective shell.