CN201340414Y - Spraying aerosol ignition distance tester - Google Patents

Abstract

The utility model discloses a spray aerosol ignition distance tester. Including gas tank automatic turning mechanism, aerosol automatic spraying mechanism, gas tank positioning and clamping mechanism, gas tank height adjustment mechanism, linear guide rail movement mechanism, ignition source mechanism, combustion detection unit and processing circuit; The gas tank automatic turning mechanism is installed on the portal frame, the gas tank fixed stand is connected with the gas tank automatic turning mechanism, one side of the gas tank fixing stand is fixed with the gas tank automatic turning mechanism, and the other side is sequentially from top to bottom Install the automatic spraying mechanism of aerosol, the positioning and clamping mechanism of the gas tank and the height adjustment mechanism of the gas tank, the linear motion mechanism is installed on the other side of the platform, the ignition source mechanism is installed on the linear guide rail movement mechanism, and the combustion detection unit is installed on the ignition source mechanism; processing circuit , the gantry and the automatic turning mechanism of the gas tank are enclosed in an electric control box, and a display and a control keyboard are installed on the electric control box. The utility model realizes automatic measurement, has high accuracy and good safety.

Description

A spray aerosol ignition distance tester

technical field

The utility model relates to a dangerous goods tester, in particular to a spray aerosol ignition distance tester.

Background technique

Flammable aerosols are dangerous goods in international trade. The "Recommendations on the Transport of Dangerous Goods: Manual of Tests and Standards" issued by the United Nations requires the ignition distance test of flammable aerosols, and has formulated relevant test standards. Among them, the flammable aerosol ignition distance test is used to determine the ignition distance of flammable aerosol products with a spraying distance of 15cm or more, so as to evaluate the relevant degree of fire hazard.

At present, my country's testing methods for flammable aerosols are quite different from international standards. Globally harmonized system, my country's new national standard "GB/T 21630-2008 Test method for ignition distance of aerosols for dangerous goods" implemented in September 2008. At present, domestic spray aerosol verification is mostly manual operation, with low measurement accuracy, low measurement efficiency, and poor safety. With the implementation of new standards, it no longer meets the verification requirements; there is no similar equipment abroad.

Contents of this utility model

The purpose of this utility model is to provide a spray aerosol ignition distance tester, which can realize the automatic control of the ignition distance of flammable gas sol, with high accuracy and good safety. The test method and evaluation method conform to GB/T 21630-2008.

The technical scheme that the utility model object realizes is:

The spray aerosol ignition distance tester includes the gas tank automatic turning mechanism, the aerosol automatic spraying mechanism, the gas tank positioning and clamping mechanism, the gas tank height adjustment mechanism, the linear guide rail movement mechanism, the ignition source mechanism, the combustion detection unit and the processing circuit; A door-shaped frame is installed on one side of the platform, and the gas tank automatic turning mechanism is installed on the door-shaped frame. The gas tank fixed platform is connected with the gas tank automatic turning mechanism. The shaft of the turning mechanism is fixed, and the other side is installed from top to bottom in order to install the automatic spraying mechanism of aerosol, the positioning and clamping mechanism of the gas tank and the height adjustment mechanism of the gas tank, the linear motion mechanism is installed on the other side of the platform, and the ignition source mechanism is installed on the linear guide rail to move In terms of mechanism, the combustion detection unit is installed on the ignition source mechanism; the processing circuit, the gantry and the automatic turning mechanism of the gas tank are enclosed in an electric control box, and a display and a control keyboard are installed on the electric control box.

The automatic turning mechanism of the gas tank is as follows: two bearing seats are installed on both sides of the upper surface of the gantry frame, the shaft is installed in the two bearing seats, the left end of the shaft is equipped with a driven wheel, and the right side of the shaft is connected and fixed to the base plate through a key; A DC motor is installed on the inside of the gantry, and the driving wheel on the DC motor shaft drives the driven wheel and the shaft to rotate through the synchronous belt. A cam-shaped baffle bracket is fixed in the middle of the shaft, and the baffle bracket is equipped with a baffle. The baffle brackets are respectively equipped with photoelectric pair tubes, the travel switch is installed under the baffle brackets, and the power line of the DC motor is connected to the travel switches.

The automatic spraying mechanism of aerosol is as follows: the dustproof cap is installed on the upper plate, the push-pull electromagnet is installed on the middle plate, the lower end of the push-pull electromagnet is installed with a pressure head, and the pressure head passes through the lower plate with a long slot and fixes it with the gas tank The seat plate of the bench, the seat plate is fixed on the base plate, the tightening screw passes through the left vertical plate and is connected with the seat plate, the adjusting screw rod is connected with the lower plate, and the microphone is installed on the base plate on one side of the indenter.

The gas tank positioning and clamping mechanism is as follows: screw rods with positive and negative threads at both ends are fixed on the middle part of the base plate of the gas tank fixing platform by bolts, and the left and right sliders are respectively installed on the left and right sides of the screw rod, The clamping block is fixed on the left slider, and the clamping block is the middle clamping layer. The upper limit block and the lower limit block are fixed on the right slider. The upper limit block and the lower limit block are the upper and lower clamping layers. The left end of the screw rod is connected with the turntable. Fix the handle on the turntable.

The gas tank height adjustment mechanism is as follows: a long groove is opened at the lower end of the base plate of the gas tank fixing platform, the pull rod passes through the front splint, the groove, the base and the rear splint in sequence, the left end of the pull rod is fixed with a nut, and the cam pressure wheel is fixed by the hinge shaft. At the right end of the pull rod, one end of the cam pressing wheel fixes the handle.

The motion mechanism of the linear guide rail is as follows: a screw rod is installed on the platform, and one end of the screw rod is connected to the main shaft of the stepping motor after cooperating with the nut screw pair under the slide plate; A limit switch, six photoelectric pair tubes are equidistantly installed between the limit switches every 15cm, the candle holder of the ignition source mechanism is fixed on the slide plate, and the positioning block is fixed on the slide plate.

The ignition source mechanism is as follows: a spring is placed at the lower end of the candle holder hole, a spring seat is installed at the upper end of the spring, the candle is installed on the spring seat, a heat insulation pad is placed at the upper end of the candle, a metal sleeve with heat insulation cotton and a candle holder The metal sleeve is sealed with a heat insulating pad with a hole, and a candle baffle with a round hole is installed on the upper end of the metal sleeve, and is fixed by a clip.

The combustion detection unit is as follows: a sensor mounting frame is installed at an angle of 45 degrees between the upper end of the metal sleeve and the direction of movement of the ignition source mechanism, a thermocouple is fixed on the side of the sensor mounting frame close to the flame, and the sensor insulation cover is installed on the side of the thermocouple. Install six photosensitive tubes at equal intervals in the sensor heat preservation cover.

The processing circuit is: the microprocessor is respectively connected with the modulation circuit, the keyboard, the photoelectric pair tube on the baffle bracket, the microphone, the limit switch, six photoelectric pair tubes on a guide rail, a push-pull electromagnet, a DC motor, a stepper, etc. The motor, alarm, temperature and humidity sensor, display, and photosensitive tube are connected; the modulation circuit is connected to the thermocouple.

The beneficial effect that the utility model has is:

1. High degree of measurement automation: it can automatically turn over the gas tank; automatically spray the aerosol and the spray time is controllable; the ignition source mechanism is automatically and accurately positioned at different measurement interval points; the height of the candle flame is automatically kept unchanged; the combustion phenomenon is automatically judged, Real-time display of environmental parameters and test results, automatic processing and analysis.

2. High measurement accuracy: Aiming at the instantaneous and high brightness characteristics of the flame generated after the gas mist is ignited, the flame is monitored by the flame capture sensor system including photosensitive tubes and thermocouples and quickly transmitted to the microprocessor for corresponding processing; The microprocessor's internal timer automatically and accurately keeps time.

3. Good safety: due to the realization of automatic measurement, the testers can stay away from the test area; when the system goes wrong, an alarm will sound and an emergency button is used to stop the operation of the instrument and initialize the recovery system;

4. Wide range of application: suitable for gas tanks of different sizes, types, specifications and shapes.

5. The test method and evaluation method of this tester comply with GB/T 21630-2008, and realize automatic measurement with high accuracy and good safety.

Description of drawings

Fig. 1 is the schematic diagram of the spray aerosol ignition distance tester of the present invention.

Fig. 2 is a top view of the gas tank automatic turning mechanism and the gas tank fixing stand of the utility model.

Fig. 3 is a sectional view in the L-L direction of the gas tank automatic turning mechanism of the present invention.

Fig. 4 is a schematic diagram of the gas tank fixing platform of the present invention.

Fig. 5 is a B-B sectional view of the automatic aerosol spraying mechanism of the present invention.

Fig. 6 is a cross-sectional view in the C-C direction of the gas tank height adjustment mechanism of the present invention.

Fig. 7 is a schematic diagram of the ignition source mechanism of the present invention.

Fig. 8 is a top view of the ignition source mechanism of the present invention.

Fig. 9 is a top view of the linear guide rail movement mechanism of the present invention.

Fig. 10 is a structural block diagram of the processing circuit of the present invention.

Among the figure: 1. platform, 2. gantry, 3. DC motor, 4. driving wheel, 5. synchronous belt, 6. bearing with seat, 7. shaft, 8. axle sleeve, 9. adjusting screw rod, 10 .Left vertical plate, 11. Turntable, 12. Base plate, 13. Base, 14. Photoelectric tube, 15. Screw rod, 16. Positioning baffle, 17. Metal sleeve, 18. Sensor mounting frame, 19. Sensor Insulation cover, 20. stepping motor, 21. driven wheel, 22. photoelectric pair tube, 23. upper limit block, 24. dust cover, 25. tightening screw A, 26. handle A, 27. tightening screw, 28. Baffle, 29. Baffle bracket, 30. Travel switch, 31. Handle B, 32. Air tank, 33. Groove, 34. Clamping block, 35. Left slider, 36. Seat plate, 37. Microphone , 38. Pressure head, 39. Lower limit block, 40. Right slider, 41. Screw rod, 42. Cam pressure wheel, 43. Lower plate, 44. Upper plate, 45. Push-pull electromagnet, 46. Middle plate, 47. Right vertical plate, 48. Pressure head, 49. Nut, 50. Rear splint, 51. Front splint, 52. Hinge shaft, 53. Pull rod, 54. Candle holder, 55. Thermal insulation cotton, 56. Spring, 57 .Heat insulation pad, 58. Clip, 59. Candle baffle, 60. Thermocouple, 61. Photosensitive tube, 62. Candle, 63. Spring seat, 64. Skateboard, 65. Guide rail, 66. Limit switch.

Detailed ways

As shown in Figure 1, the utility model includes an automatic gas tank turning mechanism, an automatic aerosol spraying mechanism, a gas tank positioning and clamping mechanism, a gas tank height adjustment mechanism, a linear guide rail movement mechanism, an ignition source mechanism, a combustion detection unit and a processing circuit Install gantry 2 on one side of platform 1, install gas tank automatic turning mechanism on gantry 2, gas tank fixed platform is connected with gas tank automatic turning mechanism, and one side of gas tank fixed platform is welded with a shaft sleeve 8 is fixed with the axis 7 of the gas tank automatic turning mechanism, and the other side is installed in sequence from top to bottom with the automatic spraying mechanism of aerosol, the positioning and clamping mechanism of the gas tank and the height adjustment mechanism of the gas tank, and the linear motion mechanism is installed on the other side of the platform 1, and the ignition The source mechanism is installed on the linear guide rail movement mechanism, and the combustion detection unit is installed on the ignition source mechanism; the processing circuit, the gantry 2 and the automatic turning mechanism of the gas tank are enclosed in an electric control box, and a display and a control keyboard are installed on the electric control box. Place the gas tank 32 on the base 13 with round holes, adjust the vertical and other postures of the gas tank by the gas tank positioning and clamping mechanism, and the gas tank height adjustment mechanism adjusts the height of the gas tank 32 and fixes the gas tank 32 so that the height of the gas tank 32 The nozzle is facing the flame of the candle 62; the overturning of the gas tank 32 and the pressing of the push-pull electromagnet 45 are all controlled by the microprocessor. The ignition source mechanism is composed of candle 62 and its protection mechanism, installed on the linear guide rail motion mechanism driven by the stepper motor 20, to realize the movement and positioning of the ignition source mechanism, and to complete the ignition test at different ignition distances. The ignition is detected by the combustion detection unit, and the detection data is sent to the microprocessor for processing and analysis. With the microprocessor as the core of the control system, it processes the information of the automatic aerosol spraying mechanism, the automatic turning mechanism of the gas tank, the linear guide rail movement mechanism, and the combustion detection unit during the test process, and controls the working status of the mechanism.

As shown in Figures 1 to 3, the gas tank automatic turning mechanism of the present invention: two bearing seats 6 are installed on both sides of the upper surface of the portal frame 2, the shaft 7 is installed in the two bearing seats 6, and the left end of the shaft 7 is installed Driven wheel 21, shaft 7 right side and base plate 12 are connected and fixed by key; DC motor 3 is installed in gantry 2 inner sides, and driving wheel 4 on DC motor 3 shaft drives driven wheel 21 and shaft 7 to rotate through synchronous belt 5, shaft 7 middle parts fix a cam-shaped baffle plate support 29, the baffle plate support 29 installs baffle plate 28, and the photoelectric pair tube 22 is equipped with respectively symmetric to the baffle plate support 29 on both sides of the portal frame 2. After the shaft 7 rotates through 180 degrees, the photoelectric pair tube B22 receives the signal and is stopped by the microprocessor; the travel switch 30 is installed under the baffle bracket 29, and the power line of the DC motor 3 is connected to the travel switch 30. When the photoelectric pair tube 22 fails , the DC motor 3 is controlled by the travel switch 30 to stop.

As shown in Fig. 1, Fig. 4 and Fig. 5, in the aerosol automatic spraying mechanism of the present utility model, the dustproof cap 24 is installed on the upper plate 44, the push-pull electromagnet 45 is installed on the middle plate 46, and the lower end of the push-pull electromagnet 45 is installed Indenter 48, the indenter 48 passes through the lower plate 43 with a long groove and the seat plate 36 of the gas tank fixed stand, the seat plate 36 is fixed on the base plate 12, and the set screw rod 27 passes through the left vertical plate 10 and the seat plate 36 connection, the adjustment screw rod 9 is connected with the lower plate 43, the microphone 37 is installed on the base plate 12 on the side of the pressure head 48, the microphone 37 collects the sound signal of the automatic spraying of the gas tank, and sends it to the microprocessor; the microprocessor controls the push and pull The number of times and the time that the pressure head 48 at the lower end of the electromagnet 45 presses the nozzle of the gas tank.

As shown in Fig. 1 and Fig. 4, the positioning and clamping mechanism of the gas tank of the present utility model is fixed on the middle part of the base plate 12 of the gas tank fixed platform by bolts with two ends being positive and negative threads respectively, and the screw mandrel 41 A left slider 35 and a right slider 40 are respectively installed on the left and right sides, the clamping block 34 is fixed on the left slider 35, the clamping block 34 is the middle clamping layer, and the upper limit block 23 and the lower limit block 39 are fixed on the right slider 40 , the upper limit block 23 and the lower limit block are the upper and lower clamping layers, the left end of the screw rod 41 is connected with the turntable 11, and the handle 26 is fixed on the turntable 11; the handle 26 is rotated clockwise, and the clamping block 34 and the limit block 39 move toward the center at the same time. Moving, through the three-point fixing of the clamping block 34 and the limit block 39, the vertical and automatic centering clamping of the gas tanks 32 with different diameters is realized.

As shown in Figure 1, Figure 4 and Figure 6, the gas tank height adjustment mechanism of the present utility model has a long groove 33 at the lower end of the base plate 12 of the gas tank fixed stand, and the pull rod 53 passes through the front splint 51, groove 33, Base 13 and rear splint 50, pull rod 53 left end fixing nut 49, cam pressure roller 42 is fixed on the right end of pull rod 53 through hinge shaft 52, and one end of cam pressure roller 42 fixes handle 31, when the direction of handle 31 is consistent with pull rod 53, it can be adjusted up and down For the height of the entire height adjustment mechanism, the handle B31 is rotated to one side of the base plate 12 to fix the base 13 .

As shown in Fig. 1 and Fig. 9, in the linear guide rail motion mechanism of the present utility model, a screw mandrel 15 is installed on the platform 1, and one end of the screw mandrel 15 is connected with the main shaft of the stepping motor 20 after the screw pair of nuts below the slide plate 64 cooperates; Guide rails 65 are installed on both sides of the screw mandrel 15, wherein a limit switch 66 is respectively installed at both ends of a guide rail 65, and six photoelectric pair tubes 14 are equidistantly installed between the limit switches 66 at intervals of 15 cm. The candle holder 54 of the ignition source mechanism It is fixed on the slide plate 64 , and the positioning block 16 is fixed on the slide plate 64 , and the screw rod 15 is driven to rotate by the stepping motor 20 to realize the axial movement of the ignition source mechanism on the guide rail 65 .

As shown in Figure 1 and Figure 5, in the ignition source mechanism of the present invention, a spring 56 is placed at the lower end of the candle holder 54 holes, a spring seat 63 is installed on the upper end of the spring 56, a candle 62 is installed on the spring seat 63, and a heat insulation is placed on the upper end of the candle 62. Pad 57, the metal sleeve 17 that has heat-insulating layer insulation cotton 55 cooperates with the circular groove on the candlestick 54 seats, seals metal sleeve 17 with the heat-insulating pad 57 with holes, and the metal sleeve 17 upper end installs belt The candle baffle plate 59 of circular hole is fixed by clip 58, and when ignition takes place, the temperature rises suddenly, because the heat insulation effect of thermal insulation cotton 55 and the protection of metal sleeve 17 have prevented candle 62 from melting. Candle 62 is pushed up by spring 56 when burning, and candle 62 is kept in contact with candle baffle plate 59 all the time, guarantees that the height of candle flame is constant.

As shown in Fig. 1, Fig. 7 and Fig. 8, in the combustion detection unit of the present utility model, the sensor mounting frame 18 is installed at an angle of 45 degrees on the upper end of the metal sleeve 17 and the direction of motion of the ignition source mechanism, and the sensor mounting frame 18 is close to the flame. Side fixed thermocouple 60 is used to collect the temperature signal of combustion and sends it to the microprocessor. Sensor heat preservation cover 19 is installed on one side of thermocouple 60, and six photosensitive tubes 61 are installed at equal intervals in sensor heat preservation cover 19 for Collect the burning flame signal and send it to the microprocessor.

As shown in Figure 10, the processing circuit of the present utility model, the microprocessor is respectively connected with the photoelectric pair tube 22 on the modulation circuit, the keyboard, the baffle bracket 29, the microphone 37, the limit switch 66, and six photoelectric tubes on a guide rail 65. Connect to tube 14, push-pull electromagnet 45, DC motor 3, stepper motor 20, alarm, temperature and humidity sensor, display, photosensitive tube 61; modulation circuit connects thermocouple 60. The processing circuit is a fully automatic detector with a microprocessor as the core of the control system, and uses temperature and humidity sensors to collect test environment information. Control, the thermocouple 60 and the photosensitive tube 61 detect the combustion state data and send them to the microprocessor for processing and analysis, and are controlled by the keyboard, and the test results of the ignition process are displayed on the display, and the alarm is used to alarm the wrong operation process. machine for remote communication and control.

The specific embodiment of the utility model is as follows:

Before the start of the test, according to the requirements of GB/T 21630-2008 for sampling and sample processing, place a full gas tank on the base, loosen the nut 49 to adjust the height of the base 13, so that the gas tank nozzles of different heights and the candle flame are at the same Height, locking nut 49, rotary handle 31, fixed base 13 heights. The handle 26 is rotated, and the gas tank positioning and clamping mechanism clamps the gas tank 32 . Adjust the adjusting screw mandrel 9 in the aerosol automatic spraying mechanism, and when the pressure head 38 is aimed at the nozzle, the set screw rod 25 is fixed. Turn on the spray aerosol ignition distance tester, manually input the product name, net capacity, initial loading level, etc. on the host computer, and the temperature and humidity of the environment will be collected by the temperature and humidity sensor SHT11 and transmitted to the host computer. The microprocessor AT89C55WD+EPM7064 controls the stepper motor 57BYGH20 to drive the screw A15 of the linear guide rail movement mechanism, so that the ignition source mechanism moves and positions automatically. Firstly, the combustion system is positioned at a distance of 60cm from the gas tank, that is, the ignition distance is 60cm, and the push-pull electromagnet 45 is controlled by the microprocessor AT89C55WD+EPM7064 to press the nozzle start valve, the spray is sprayed for 5 seconds, and the sound signal of the nozzle is collected by the microphone MK200 37 , sent to the microprocessor AT89C55WD+EPM7064 to judge whether the gas tank 32 sprays out the gas mist, if ignition occurs, record the flame time for 5 seconds from the ignition; if no ignition occurs, the DC motor is controlled by the microprocessor AT89C55WD+EPM7064 3 rotation, the gas tank automatic turning mechanism drives the base plate 12 of the gas tank fixed stand to turn over, and after the axis 7 turns 180 degrees, the baffle is transferred to the photoelectric pair tube TP85040, and the output signal is sent to the microprocessor AT89C55WD+EPM7064, which is controlled by the microprocessor The device AT89C55WD+EPM7064 controls the DC motor 3 to stop rotating. If the photoelectric pair tube TP85040 fails, the long diameter of a cam-shaped baffle bracket 29 contacts the normally closed travel switch LM8-3002NA43 to open, and the DC motor 3 loses power and stops rotating. Control the push-pull electromagnet 27 to press the nozzle start valve, the spray is sprayed for 5 seconds, the spray sound information of the sprayer 32 is detected by the microphone 37, the ignition is detected by the photosensitive tube TPS80651 and the thermocouple WRNK-29150, and the detection data is sent to the microprocessor AT89C55WD +EPM7064 processing and analysis, check whether ignition occurs, if the ignition is successful, record the detection result and the distance at this time; the microprocessor AT89C55WD+EPM7064 controls the stepper motor 20 to increase the distance between the ignition source and the nozzle by 15cm, and the photoelectric on the right side of the guide rail 65 Collect the position signal of the ignition source mechanism for the tube TP85014, and repeat the detection process until the ignition fails or the ignition source reaches 90cm; otherwise, reduce the distance by 15cm until the ignition succeeds or the ignition source reaches 15cm. The microprocessor AT89C55WD+EPM7064 processes and analyzes the measured data and compares it with the national standard to evaluate the danger of the spray, and the display dynamically displays the experimental results.

The above-mentioned specific embodiments are used to explain the utility model, rather than to limit the utility model. Within the spirit of the utility model and the protection scope of the claims, any modifications and changes made to the utility model fall within the scope of this utility model. Protection scope of utility model.

Claims (9)

1, a kind of test instrument for ignition distance of atomizing aerosol is characterized in that: this device comprises gas tank automatic turning mechanism, aerosol bulk spreading truck structure, gas tank positioning and clamping mechanism, gas tank height adjustment mechanism, line slideway motion, incendiary source mechanism, burning detecting unit and treatment circuit; On platform (1) one side, portal (2) is installed, the gas tank automatic turning mechanism is installed above the portal (2), the gas tank fixed rack is connected with the gas tank automatic turning mechanism, one face down bonding of gas tank fixed rack has an axle sleeve (8) fixing with the axle (7) of gas tank automatic turning mechanism, opposite side is installed aerosol bulk spreading truck structure from top to down successively, gas tank positioning and clamping mechanism and gas tank height adjustment mechanism, platform (1) opposite side is installed straight-line motion mechanism, incendiary source mechanism is installed on the line slideway motion, install combustion detecting unit in the incendiary source mechanism; Treatment circuit, portal (2) and gas tank automatic turning mechanism are enclosed in the electric cabinet, and display and supervisory keyboard are installed on the electric cabinet.

2, a kind of test instrument for ignition distance of atomizing aerosol according to claim 1, it is characterized in that: described gas tank automatic turning mechanism is: two bearing seats (6) are installed in portal (2) upper surface both sides, axle (7) is installed in two bearing seats (6), axle (7) left end is installed engaged wheel (21), and axle (7) right side and substrate (12) are connected and fixed by key; At portal (2) installed inside direct current generator (3), driving wheel (4) on direct current generator (3) axle is by band (5) drive engaged wheel (21) and axle (7) rotate synchronously, the barrier support (29) of a cam-shaped is fixed at axle (7) middle part, barrier support (29) is installed baffle plate (28), portal (2) symmetria bilateralis is equipped with photoelectric tube (22) respectively in barrier support (29), travel switch (30) is installed in barrier support (29) below, and the power lead of direct current generator (3) connects travel switch (30).

3, a kind of test instrument for ignition distance of atomizing aerosol according to claim 1, it is characterized in that: described aerosol bulk spreading truck structure is: dust cap (24) is installed on the upper plate (44), sliding electromagnet (45) is installed on the middle plate (46), pressure head (48) is installed in sliding electromagnet (45) lower end, pressure head (48) passes the lower plate (43) that has an elongated slot and the seat board (36) of gas tank fixed rack, seat board (36) is fixed on the substrate (12), tightening screw rod (27) passes left side vertical plate (10) and is connected with seat board (36), adjust screw mandrel (9) and be connected with lower plate (43), microphone (37) is installed on the substrate (12) of pressure head (48) one sides.

4, a kind of test instrument for ignition distance of atomizing aerosol according to claim 1, it is characterized in that: described gas tank positioning and clamping mechanism is: two ends just are respectively, the screw mandrel of left-hand thread (41) is by the middle part that is bolted to gas tank fixed rack substrate (12), left slider (35) and right slide block (40) are housed respectively about screw mandrel (41), fix to clamp piece (34) on the left slider (35), clamp (34) is middle holding sheet, right slide block (40) is gone up fixed upper limit position piece (23), lower position block (39), upper limit position block (23), lower position block is a holding sheet up and down, screw mandrel (41) left end links to each other with rotating disk (11), goes up fixed handle (26) at rotating disk (11).

5, a kind of test instrument for ignition distance of atomizing aerosol according to claim 1, it is characterized in that: described gas tank height adjustment mechanism is: substrate (12) lower end at the gas tank fixed rack has an elongated slot (33), pull bar (53) passes front plate (51), groove (33), base (13) and rear plate (50) successively, pull bar (53) left end hold-down nut (49), cam pinch roller (42) is fixed on pull bar (53) right-hand member by hinge axis (52), cam pinch roller (42) one end fixed handles (31).

6, a kind of test instrument for ignition distance of atomizing aerosol according to claim 1, it is characterized in that: described line slideway motion is: platform (1) is gone up screw mandrel (15) is installed, and the nut screw pair of an end of screw mandrel (15) below slide plate (64) cooperates the back to be connected with the main shaft of stepper motor (20); Screw mandrel (15) both sides mounting guide rails (65), wherein a limit switch (66) is respectively installed at a guide rail (65) two ends, six photoelectric tubes (14) equidistantly are installed between limit switch (66) every 15cm, the candle stick of incendiary source mechanism (54) is fixed on the slide plate (64), and locating stop piece (16) is fixed on the slide plate (64).

7, a kind of test instrument for ignition distance of atomizing aerosol according to claim 1, it is characterized in that: described incendiary source mechanism is: place spring (56) in candle stick (54) lower end, hole, spring (56) upper end mounting spring seat (63), candle (62) is installed on the spring base (63), candle (62) upper ends heat insulating mattress (57), having the metal sleeve (17) of thermofin heat-preservation cotton (55) cooperates with circular trough on candle stick (54) seat, seal metal sleeve (17) with heat insulating mattress with holes (57), the candle baffle plate (59) of metal sleeve (17) upper end mounting strap circular hole, and fixing by clip (58).

8, a kind of test instrument for ignition distance of atomizing aerosol according to claim 1, it is characterized in that: described burning detecting unit is: metal sleeve (17) upper end becomes miter angle sensor installation erecting frame (18) with incendiary source mechanism kinematic direction, sensor erecting frame (18) is gone up near flame one side stationary heat galvanic couple (60), sensor stay-warm case (19) is installed in thermopair (60) one sides, and six photosensitive tubes (61) equidistantly are installed in sensor stay-warm case (19) lining.

9, a kind of test instrument for ignition distance of atomizing aerosol according to claim 1, it is characterized in that: described treatment circuit is: microprocessor respectively with modulation circuit, keyboard, barrier support (29) on photoelectric tube (22), microphone (37), limit switch (66), a guide rail (65) on six photoelectric tubes (14), sliding electromagnet (45), direct current generator (3), stepper motor (20), alarm, Temperature Humidity Sensor, display, photosensitive tube (61) be connected; Modulation circuit connects thermopair (60).

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