CN213986354U

CN213986354U - Smoke density tester

Info

Publication number: CN213986354U
Application number: CN202022934474.7U
Authority: CN
Inventors: 赵永花; 罗文华; 江溪; 孙加洁; 李峥; 孟令鑫; 刘小松
Original assignee: Jiaotong Railway Inspection And Certification Changzhou Co ltd
Current assignee: Jiaotong Railway Inspection And Certification Changzhou Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-08-17
Anticipated expiration: 2030-12-09

Abstract

The utility model discloses a smoke density tester, which comprises a combustion chamber, and a combustion assembly, a light emitting component, a light receiving component and a dust removing assembly which are arranged in the combustion chamber, wherein the number of the dust removing assemblies is two, the two dust removing assemblies are oppositely arranged, the dust removing assembly comprises a fixing piece and a transparent glass plate, the deflector, the backup pad, cam and elastic component, mounting and backup pad are all located on the inside wall of burning storehouse, be equipped with the through-hole that is used for installing light emission spare and light receiving part on the mounting, the fixed through-hole that just seals that locates on the mounting of transparent glass breast board, the deflector rotationally locate on the inside wall of burning storehouse and laminate with transparent glass board slidable, the cam rotationally locates on the backup pad, the outer back of cam supports with the deflector, the elastic component is installed telescopically between backup pad and deflector, the air jet is installed to one side of deflector. The utility model discloses have dust removal function, guaranteed the accuracy of test result.

Description

Smoke density tester

Technical Field

The utility model relates to a smoke density test technical field especially relates to a smoke density tester.

Background

Smoke density is a measure of the amount of smoke emitted by a material under specified test conditions and is described in terms of the attenuation of the light intensity transmitted through the smoke. The higher the smoke density of the material, the more detrimental it is to evacuation of people and fire fighting in case of fire, and therefore the density of the burning smoke is one of the factors in assessing the performance of the material.

In the aspect of rail transit vehicles, smoke density tests need to be carried out on cables inside the rail transit vehicles, so that the quality of the cables is guaranteed, and sufficient rescue time is reserved for accidents of combustion. At present, a smoke density tester is generally adopted to test the smoke density, and in the actual use process, smoke dust is attached to a light emitting end and a light receiving end more or less, so that light is blocked to normally pass through smoke, and the test result is inaccurate.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: in order to overcome the defects in the prior art, the smoke density tester with accurate test results is provided.

The utility model provides a technical scheme that its technical problem adopted is: a smoke density tester comprises a combustion chamber, and a combustion assembly, a light emitting element, a light receiving element and a dust removing assembly which are arranged in the combustion chamber, wherein the dust removing assembly comprises two dust removing assemblies which are arranged oppositely, each dust removing assembly comprises a fixing element, a transparent glass plate, a deflecting plate, a supporting plate, a cam and an elastic element, the fixing element and the supporting plate are arranged on the inner side wall of the combustion chamber, the fixing element is provided with a through hole for installing the light emitting element and the light receiving element, the transparent glass baffle plate is fixedly arranged on the fixing element and seals the through hole, the deflecting plate is rotatably arranged on the inner side wall of the combustion chamber and can be slidably attached to the transparent glass plate, the cam is rotatably arranged on the supporting plate, the outer back of the cam is abutted against the deflecting plate, and the elastic element is telescopically arranged between the supporting plate and the deflecting plate, and one side of the deflection plate is provided with an air jet.

Further, a motor is fixedly mounted on the supporting plate, and the rotating center of the cam is fixedly connected with an output shaft of the motor.

Further, the motor is a forward and reverse rotating motor.

Further, a buffer layer is formed on the surface of the deflection plate, and the buffer layer is attached to the transparent glass plate.

Further, the buffer layer is made of silica gel or rubber material.

Furthermore, one end of the elastic part is fixedly connected with the support plate, the other end of the elastic part is fixedly connected with the deflection plate, and the elastic part is a spring.

Further, the smoke density tester also comprises a gas storage tank and a vent pipe, wherein the vent pipe is connected between the gas storage tank and the gas jet port, and a valve is arranged on the vent pipe.

Further, the burning subassembly includes the sample support, installs the burning frame and the setting of sample support bottom are in the clamping structure of the relative both sides of sample support, clamping structure includes fixed connection in mount on the sample support, locate along vertical slidable clamp plate on the mount and rotationally install lead screw on the mount, the lead screw with clamp plate threaded connection.

Further, the sample support is the U-shaped structure, the mount is the U-shaped structure, clamp plate slidable ground sets up between two relative lateral walls of mount, the vertical guide post that installs on the roof of mount, guide post slidable ground passes the clamp plate.

Further, a rotating wheel is fixedly mounted at the upper end of the screw rod.

The utility model has the advantages that: the utility model provides a smoke density tester, through rotating the cam and then push away to the deflector and dodge or shield the through-hole, can avoid the transparent glass board to correspond through-hole position department and adhere to the smog dust, simultaneously, sweep the transparent glass board through the air jet, can guarantee not have the smog dust when shielding the through-hole and adhere to the condition emergence at the transparent glass board, guaranteed the accuracy of test result, convenient to popularize and use.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a schematic structural view of the smoke density tester of the present invention;

FIG. 2 is a cross-sectional view of the smoke density tester of FIG. 1;

FIG. 3 is a cross-sectional view taken along A-A of the smoke density tester of FIG. 2;

fig. 4 is a schematic structural view of the dust removing assembly in the direction B in the smoke density tester shown in fig. 2.

In the figure: 10. the device comprises a cable, 1, a combustion chamber, 11, a sealing door, 13, a transparent glass window, 14, a flue outlet, 15, an exhaust fan, 16, a heat insulation layer, 17, a display, 2, a combustion assembly, 21, a sample support, 22, a combustion support, 23, a clamping structure, 231, a fixing frame, 2311, a guide column, 232, a pressing plate, 233, a screw rod, 2331, a rotating wheel, 3, a light emitting element, 4, a light receiving element, 5, a dust removal assembly, 51, a fixing element, 511, a through hole, 52, a transparent glass plate, 53, a deflection plate, 531, a buffer layer, 532, a rotating shaft, 54, a supporting plate 541, an air nozzle, 55, a cam, 56 and an elastic element.

Detailed Description

The present invention will now be described in detail with reference to the accompanying drawings. This figure is a simplified schematic diagram, and merely illustrates the basic structure of the present invention in a schematic manner, and therefore it shows only the constitution related to the present invention.

Please refer to fig. 1, fig. 2, the utility model provides a smoke density tester, be used for testing cable 10 inlet wire burning, this smoke density tester includes combustion chamber 1 and installs combustion assembly 2 in combustion chamber 1, light emission piece 3, light receiving piece 4 and dust removal subassembly 5, light emission piece 3 sets up with light receiving piece 4 relatively, combustion assembly 2 is used for fixed cable 10 and burns cable 10, light emission piece 3 is used for launching light, light receiving piece 4 is used for receiving the light of light emission piece 3 transmission, dust removal subassembly 5 is used for preventing that the smog granule that produces after the burning of cable 10 from attaching to light emission piece 3 and light receiving piece 4.

The combustion chamber 1 is roughly of a sealed box structure, a sealing door 11 is rotatably mounted on one chamber wall of the combustion chamber 1, a transparent glass window 13 is arranged on the sealing door 11, a cable 10 to be tested can be mounted and fixed on the combustion assembly 2 through the sealing door 11, and the transparent glass window 13 is used for a user to observe the combustion condition in the combustion chamber 1. In addition, the top of the combustion chamber 1 is connected with a flue outlet 14 communicated with the inner cavity of the combustion chamber 1, an exhaust fan 15 is installed on the flue outlet 14, and after the combustion test is finished, the exhaust fan 15 is started to discharge the smoke in the combustion chamber 1 to the outside of the combustion chamber 1 through the flue outlet 14.

In this embodiment, a thermal insulation layer 16 is disposed in the wall body of the combustion chamber 1, and the thermal insulation layer 16 can prevent the heat in the combustion chamber 1 from dissipating. In this embodiment, the heat insulating layer 16 is made of a polyurethane material, which has a heat insulating effect, a good fireproof performance, and a low cost.

In addition, a controller (not shown) and a display 17 are installed on the combustion chamber 1, the light receiving part 4 and the display 17 are electrically connected with the controller, the light receiving part 4 receives light and transmits the signal to the controller, and the controller analyzes the light density and feeds the result back to the display 17. In this embodiment, the light emitting element 3 is a laser emitter, the light receiving element 4 is a light sensor, the type of the light sensor is HA2003, and the controller is an ARM single chip microcomputer.

Referring to fig. 3, the combustion assembly 2 includes a sample holder 21, a combustion frame 22 installed at the bottom of the sample holder 21, and clamping structures 23 disposed at two opposite sides of the sample holder 21, where the clamping structures 23 include a fixing frame 231 fixedly connected to the sample holder 21, a pressing plate 232 longitudinally slidably disposed on the fixing frame 231, and a screw 233 rotatably installed on the fixing frame 231, and the screw 233 is in threaded connection with the pressing plate 232. During the use, through rotating lead screw 233, can drive clamp plate 232 and move down, and then fix the cable 10 centre gripping that will await measuring on sample support 21, finally make cable 10 be located the top of burning frame 22, the upper end opening setting of burning frame 22 is used for placing the fuel in the burning frame 22, and cable 10 burns after the fuel is lighted.

In the present embodiment, the sample holder 21 has a substantially "U" -shaped structure, the holder 231 has a substantially "U" -shaped structure, and the pressing plate 232 is slidably disposed between two opposite side walls of the holder 231. In this embodiment, the top wall of the fixing frame 231 is vertically provided with the guide post 2311, and the guide post 2311 slidably penetrates through the pressing plate 232, so that the pressing plate 232 can be limited and the pressing plate 232 is prevented from rotating along with the screw rod 233.

In addition, a turning wheel 2331 is fixedly mounted on the upper end of the screw 233 in order to facilitate the user to turn the screw 233.

Referring to fig. 2 and 4, the dust removing assembly 5 has two dust removing assemblies 5, wherein the two dust removing assemblies 5 are disposed opposite to each other, one dust removing assembly 5 is used for removing dust from the light emitting element 3, and the other dust removing assembly 5 is used for removing dust from the light receiving element 4. The dust removing assembly 5 comprises a fixing member 51, a transparent glass plate 52, a deflection plate 53, a support plate 54, a cam 55 and an elastic member 56, wherein the fixing member 51 is fixedly installed on the inner side wall of the combustion chamber 1, the fixing member 51 is provided with a through hole 511 for installing the light emitting member 3 and the light receiving member 4, the transparent glass plate 52 is fixedly installed on the fixing member 51 and seals the through hole 511, the deflection plate 53 is rotatably installed on the inner side wall of the combustion chamber 1 and is slidably attached to the transparent glass plate 52, the support plate 54 is fixedly installed on the inner side wall of the combustion chamber 1 and is positioned at one side of the fixing member 51, the cam 55 is rotatably arranged on the support plate 54, the outer peripheral surface of the cam 55 is abutted against the deflection plate 53, the elastic member 56 is telescopically installed between the support plate 54 and the deflection plate 53, and one side of the deflection plate 54 is provided with an air injection port 541.

When the cable 10 is in the burning stage, the deflector 53 is attached to the transparent glass plate 52 and shields the through hole 511 of the fixing member 51, so that smoke dust cannot adhere to the transparent glass plate 52 at a position corresponding to the through hole 511. After the burning and sintering, when the smoke density is to be tested, the cam 55 is rotated to make the convex part of the cam 55 gradually get away from the deflection plate 53, the deflection plate 53 deflects to one side under the elastic force of the elastic member 56 to avoid the through hole 511, and at this time, the light emitted from the light emitting element 3 is emitted after passing through the through hole 511, and finally can be received by the light receiving element 4. After the smoke density test is finished, the transparent glass plate 52 is blown out through the gas outlet 541 to blow a small amount of smoke dust that may be attached to the transparent glass plate 52 during the test, and then the cam 55 is rotated in the opposite direction, so that the elastic member 56 is stretched and pushed against the deflection plate 53 to shield the through hole 511 again, thereby preventing dust from attaching. In this embodiment, the fixing member 51 has a circular disk-shaped structure, the deflector plate 53 has a rectangular plate-shaped structure, and the deflector plate 53 is rotatably mounted on the inner sidewall of the combustion chamber 1 through a rotating shaft 532.

In this embodiment, a motor (not shown) is fixedly mounted on the support plate 54, the rotation center of the cam 55 is fixedly connected with the output shaft of the motor, and when in use, the motor drives the cam 55 to rotate, and in addition, the motor is a forward and reverse rotation motor, so that forward and reverse rotation of the cam 55 is realized.

In one embodiment, to avoid scratching the transparent glass plate 52 by the deflection plate 53 during rotation, a buffer layer 531 is formed on the surface of the deflection plate 53, and the buffer layer 531 is attached to the transparent glass plate 52, and it is understood that the buffer layer 531 is made of silicone or rubber material.

One end of the elastic member 56 is fixedly connected to the supporting plate 54, and the other end of the elastic member 56 is fixedly connected to the deflecting plate 53, in this embodiment, the elastic member 56 is a spring, and it is understood that in other embodiments not shown, the elastic member 56 may also be a rigid and elastic element such as a stainless steel elastic sheet or a copper elastic sheet, which is not limited herein.

Additionally, the utility model discloses a smoke density tester still includes gas holder (not shown in the figure) and breather pipe (not shown in the figure), the breather pipe is connected go out between gas pitcher and the jet 541, be provided with the valve on the breather pipe, through valve control the switching of gas holder.

The utility model provides a smoke density tester, through rotating cam 55 and then push away deflection board 53 and dodge or shield through-hole 511, can avoid transparent glass board 52 to correspond through-hole 511 position department and adhere to the smog dust, simultaneously, sweep transparent glass board 52 through air jet 541, can guarantee that there is not the smog dust when shielding through-hole 511 and adhere to the condition emergence at transparent glass board 52, guaranteed the accuracy of test result, convenient to popularize and use.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a smoke density tester which characterized in that: the dust removal device comprises a combustion chamber, a combustion assembly, a light emitting piece, a light receiving piece and a dust removal assembly, wherein the combustion assembly, the light emitting piece, the light receiving piece and the dust removal assembly are arranged in the combustion chamber, the dust removal assembly comprises a fixing piece, a transparent glass plate, a deflection plate, a supporting plate, a cam and an elastic piece, the fixing piece and the supporting plate are arranged on the inner side wall of the combustion chamber, a through hole for installing the light emitting piece and the light receiving piece is arranged on the fixing piece, the transparent glass baffle plate is fixedly arranged on the fixing piece and seals the through hole, the deflection plate is rotatably arranged on the inner side wall of the combustion chamber and is slidably attached to the transparent glass plate, the cam is rotatably arranged on the supporting plate, the outer back of the cam is abutted against the deflection plate, and the elastic piece is telescopically arranged between the supporting plate and the deflection plate, and one side of the deflection plate is provided with an air jet.

2. The smoke density tester of claim 1 wherein: the supporting plate is fixedly provided with a motor, and the rotating center of the cam is fixedly connected with an output shaft of the motor.

3. The smoke density tester of claim 2 wherein: the motor is a positive and negative rotation motor.

4. The smoke density tester of claim 1 wherein: a buffer layer is formed on the surface of the deflection plate and is attached to the transparent glass plate.

5. The smoke density tester of claim 4 wherein: the buffer layer is made of silica gel or rubber materials.

6. The smoke density tester of claim 1 wherein: one end of the elastic piece is fixedly connected with the supporting plate, the other end of the elastic piece is fixedly connected with the deflection plate, and the elastic piece is a spring.

7. The smoke density tester of claim 1 wherein: the smoke density tester also comprises a gas storage tank and a vent pipe, wherein the vent pipe is connected between the gas storage tank and the gas jet, and a valve is arranged on the vent pipe.

8. The smoke density tester of claim 1 wherein: the combustion assembly comprises a sample support, a combustion frame arranged at the bottom of the sample support and clamping structures arranged on two opposite sides of the sample support, the clamping structures comprise fixed frames fixedly connected to the sample support, pressing plates arranged on the fixed frames along the longitudinal direction in a sliding mode and screw rods rotatably arranged on the fixed frames, and the screw rods are in threaded connection with the pressing plates.

9. The smoke density tester of claim 8 wherein: the test sample support is the U-shaped structure of "", the mount is the structure of "#" shape, clamp plate slidable ground sets up between two relative lateral walls of mount, the vertical guide post of installing on the roof of mount, guide post slidable ground passes the clamp plate.

10. The smoke density tester of claim 9 wherein: and a rotating wheel is fixedly arranged at the upper end of the screw rod.