Sample feeding and cleaning device of liquid continuous combustion tester

Abstract

The application discloses a liquid continuous combustion test instrument sample feeding and cleaning device, and relates to the technical field of liquid continuous combustion test, which comprises a bottom plate, a sample feeder is installed on the top of the bottom plate, and a liquid cylinder containing liquid to be used is placed on the top of a detection box through the setting of a moving plate, the detection box and the liquid cylinder. At this time, the limiting block is located in the limiting groove, then the connecting rod is loosened by the operator, the bottom end of the connecting shaft is inserted into the positioning groove, then the rotating rod drives the bidirectional screw rod to rotate through the belt pulley, the bidirectional screw rod drives the other bidirectional screw rod to rotate through the connecting column, the push block pushes one end of the connecting column to be inserted into the clamping groove, the rotating shaft is rotated, the rotating shaft drives the threaded rod to rotate through the second bevel gear, the connecting rod pushes the sleeve head to move upwards, the bottom end of the nozzle is located in the hose, and the waste liquid generated during cleaning can be prevented from flowing into the outside world and causing the outside world to be polluted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid sustained combustion test, in particular to a sample feeding and cleaning device of a liquid sustained combustion tester. BACKGROUND

[0002] The liquid sustained combustion test is to determine whether a substance will sustain combustion when heated and exposed to a flame under test conditions, and is an important test for evaluating whether a substance is a flammable liquid. The liquid sustained combustion tester is a detection device for conducting the liquid sustained combustion test, which heats a metal block having a recess (a test sample groove) to a specified temperature. A specified amount of a test substance is placed in the test groove, and then a standard flame is applied under specified conditions and is immediately removed, and it is observed whether the test substance will sustain stable combustion. The tester is suitable for liquids that do not crystallize or precipitate at room temperature, and when it is necessary to replace different types of liquids for testing, the sample feeder needs to be cleaned, and at this time, the waste liquid cleaned out is easy to flow into the outside world, causing pollution to the outside world and causing safety accidents to occur. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a sample feeding and cleaning device of a liquid sustained combustion tester, which solves the problems raised in the background art.

[0004] To achieve the above purpose, the present application is implemented by the following technical scheme: a sample feeding and cleaning device of a liquid sustained combustion tester, comprising a bottom plate, a sample feeder is installed on the top of the bottom plate, a detection box is fixedly connected to one side of the top of the bottom plate and located at the sample feeder, a liquid cylinder is placed on the top of the detection box, a switch valve is installed on the top of the liquid cylinder, a suction tube is arranged at the bottom of the switch valve, the bottom end of the suction tube extends into the liquid cylinder, a piston block is slidably connected to the outside of the suction tube in the liquid cylinder, connecting shafts are arranged at the bottom of the piston block and located on both sides of the suction tube, a moving cavity is formed in the detection box, a moving plate is slidably connected in the moving cavity, the connecting shafts extend into the moving cavity, positioning grooves are formed in the top of the moving plate and located below the connecting shafts, the connecting shafts extend into the positioning grooves, connecting grooves are formed in the moving plate and located outside the positioning grooves, bidirectional screws are rotatably connected in the connecting grooves, push blocks are threadedly connected to positions on the outer sides of the bidirectional screws in opposite screw directions, coupling columns are arranged on the top of the push blocks, clamping grooves are formed in the bottom of the connecting shafts and located at one end of the coupling columns, one end of the coupling columns extends into the clamping grooves, and the two bidirectional screws are connected through the connecting column.

[0005] Optionally, one side of the detection box is provided with a sliding slot, the sliding slot is internally and slidably connected with a sliding block, one end of the bidirectional screw rod extends into the sliding block, one side of the sliding block inner cavity is rotatably connected with a rotating rod, the rotating rod and the outer side of the bidirectional screw rod are both provided with a belt pulley connected through a belt.

[0006] Optionally, one end of the rotating rod extends to the outside of the sliding block.

[0007] Optionally, the outside of the detection box is fixedly provided with a limiting sleeve, the top of the limiting sleeve is provided with a bottom sleeve, the top of the bottom sleeve is connected with the bottom of the liquid cylinder, the top of the moving cavity inner cavity and the top of the moving plate are both embedded with electromagnets.

[0008] Optionally, one side of the detection box inside and located in the moving cavity is provided with a moving groove, the moving groove inner cavity is rotatably connected with a threaded column, the outer side of the threaded column is threadedly connected with a moving block, one end of the moving block extends to the inside of the moving cavity, the detection box inside and located below the moving groove is provided with an odd transmission groove, one side of the detection box is rotatably connected with a fixed rod, one end of the fixed rod extends to the inside of the transmission groove, the bottom end of the threaded column extends to the inside of the transmission groove, the outer sides of the fixed rod and the threaded column are both provided with a first bevel gear engaged with each other, one side of the detection box is provided with a visual plate.

[0009] Optionally, one end of the sample injector is provided with a connecting head, the top of the on-off valve is provided with a fixed head, the outer side of the fixed head is provided with two limiting blocks, both sides of the connecting head are provided with detection box nozzles, the top of each limiting block and located below the detection box nozzle is provided with a limiting groove, the limiting groove is internally provided with a limiting block, the top of the limiting block is connected with the bottom of the detection box nozzle, the inside of the limiting block and located on one side of the limiting groove is provided with a connecting cavity, the connecting cavity is internally and slidably connected with a fixed column, one side of the limiting block is provided with a column groove, one end of the fixed column extends to the inside of the column groove, one end of the fixed column is provided with a connecting rod, the connecting cavity inside and located on the outer side of the connecting rod is slidably connected with a connecting spring, one end of the connecting rod extends to the outside of the limiting block.

[0010] Optionally, the top of the bottom plate is provided with a placing seat, the placing seat is internally placed with a waste liquid bottle, one side of the waste liquid bottle is provided with a fixed cylinder, the inside of the fixed cylinder is rotatably connected with a threaded rod, the outer side of the threaded rod is threadedly connected with a connecting rod, one side of the fixed cylinder is rotatably connected with a rotating shaft, one end of the rotating shaft extends to the inside of the fixed cylinder, the outer sides of the threaded rod and the rotating shaft are both provided with a second bevel gear engaged with each other, one end of the connecting rod is provided with a sleeve head, the other end of the sample injector is provided with a nozzle, the bottom of the sleeve head is provided with a hose, the bottom of the hose is connected with the top of the waste liquid bottle.

[0011] The application provides a liquid continuous combustion test instrument sample feeding and cleaning device, which has the following beneficial effects:

[0012] 1. The liquid continuous combustion test instrument sample feeding and cleaning device, when the sample feeder needs to be cleaned, the liquid cylinder containing the liquid to be used is placed on the top of the detection box, then the switch valve is opened, then the operator pulls the connecting rod, so that the connecting rod moves into the connecting cavity through the fixed column, at this time the bottom of the connecting head is inserted into the switch valve, at this time the limiting block is located in the limiting groove, then the operator releases the connecting rod, at this time the connecting spring pushes one end of the fixed column into the column groove, at this time the bottom sleeve is located above the limiting sleeve, at this time the bottom end of the connecting shaft is inserted into the positioning groove, then the rotating rod drives the bidirectional screw rod to rotate through the belt pulley, so that the bidirectional screw rod drives the other bidirectional screw rod to rotate through the connecting column, so that the push block pushes one end of the connecting column into the clamping groove, and the waste liquid bottle is placed in the placing seat, then the rotating shaft is rotated, so that the rotating shaft drives the threaded rod to rotate through the second bevel gear, so that the connecting rod pushes the sleeve head to move upwards, so that the bottom end of the nozzle is located in the hose, which can prevent the waste liquid generated during cleaning from flowing into the outside world and causing pollution to the outside world.

[0013] 2. The liquid continuous combustion test instrument sample feeding and cleaning device, when the sample feeder is started, the liquid in the liquid cylinder is extracted, at this time the piston block pushes the connecting shaft to move downwards, at this time the moving plate moves downwards, when the moving plate triggers the trigger switch, the external controller alarms to prompt the operator that the liquid in the liquid cylinder is about to be consumed, which facilitates the operator to timely adjust the liquid continuous combustion test. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an internal structure diagram of the application;

[0015] Figure 2 It is a connecting head structure diagram of the application;

[0016] Figure 3 It is a detection box side view structure diagram of the application;

[0017] Figure 4 It is an A enlarged view of the application; Figure 1

[0018] Figure 5 It is a B enlarged view of the application; Figure 1

[0019] Figure 6 It is a C enlarged view of the application; Figure 1

[0020] Figure 7 It is an internal structure diagram of the application;​​​Figure 1 Enlarged view of D.

[0021] In the figure: 1, base plate; 2, sample feeder; 3, connecting head; 4, spray head; 5, detection box; 6, moving plate; 7, connecting groove; 8, bidirectional screw rod; 9, connecting column; 10, push block; 11, positioning groove; 12, clamping groove; 13, connecting shaft; 14, sliding groove; 15, sliding block; 16, rotating rod; 17, pulley; 18, connecting column; 19, limiting sleeve; 20, bottom sleeve; 21, liquid cylinder; 22, suction tube; 23, piston block; 25, on-off valve; 26, fixed head; 27, limiting block; 28, limiting groove; 29, limiting block; 30, connecting cavity; 31, fixed column; 32, column groove; 33, connecting spring; 34, connecting rod; 35, moving groove; 36, moving block; 37, threaded column; 38, transmission groove; 39, first bevel gear; 40, fixed rod; 41, electromagnet; 42, trigger switch; 43, moving cavity; 44, fixed cylinder; 45, threaded rod; 46, rotating shaft; 47, second bevel gear; 48, connecting rod; 49, hose; 50, sleeve head; 51, waste liquid bottle; 52, placing seat; 53, visual plate. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0023] Embodiment one

[0024] Please refer to Figures 1 to 6The application provides a technical scheme: a sampling and cleaning device of a liquid continuous combustion tester, which comprises a bottom plate 1, a sampler 2 is arranged on the top of the bottom plate 1, a detection box 5 is fixedly connected to one side of the top of the bottom plate 1 and located at one side of the sampler 2, a liquid cylinder 21 is arranged on the top of the detection box 5, a switch valve 25 is arranged on the top of the liquid cylinder 21, a suction tube 22 is arranged on the bottom of the switch valve 25, the bottom end of the suction tube 22 extends into the liquid cylinder 21, a piston block 23 is slidably connected to the outside of the suction tube 22 in the liquid cylinder 21, connecting shafts 13 are arranged on the bottom of the piston block 23 and located on both sides of the suction tube 22, a moving cavity 43 is arranged in the detection box 5, a moving plate 6 is slidably connected to the inside of the moving cavity 43, the bottoms of the connecting shafts 13 extend into the inside of the moving cavity 43, positioning grooves 11 are arranged on the top of the moving plate 6 and located below the connecting shafts 13, the bottoms of the connecting shafts 13 extend into the inside of the positioning grooves 11, connecting grooves 7 are arranged in the moving plate 6 and located outside the positioning grooves 11, bidirectional screws 8 are rotatably connected to the inside of the connecting grooves 7, push blocks 10 are threadedly connected to positions with opposite screw directions on the outside of the bidirectional screws 8, coupling columns 9 are arranged on the top of the push blocks 10, clamping grooves 12 are arranged on the bottom of the connecting shafts 13 and located at one end of the coupling columns 9, one end of the coupling columns 9 extends into the inside of the clamping grooves 12, and the two bidirectional screws 8 are connected through a connecting column 18.

[0025] Wherein, a sliding groove 14 is arranged on one side of the detection box 5, sliding blocks 15 are slidably connected to the inside of the sliding groove 14, one end of one bidirectional screw 8 extends into the inside of the sliding block 15, a rotating rod 16 is rotatably connected to one side of the inner cavity of the sliding block 15, and belt pulleys 17 driven by belts are arranged on the outside of the bidirectional screw 8 and the rotating rod 16, so as to conveniently drive the bidirectional screw 8 to rotate.

[0026] Wherein, one end of the rotating rod 16 extends to the outside of the sliding block 15, so as to conveniently rotate the rotating rod 16.

[0027] Wherein, a limiting sleeve 19 is fixedly arranged on the outside of the detection box 5, a bottom sleeve 20 is arranged on the top of the limiting sleeve 19, the top of the bottom sleeve 20 is connected with the bottom of the liquid cylinder 21, and electromagnets 41 are inlaid on the top of the moving cavity 43 and the top of the moving plate 6, so that the liquid cylinder 21 can be placed above the detection box 5.

[0028] The detection box 5 is internally provided with a moving slot 35 on one side of the moving cavity 43, a threaded column 37 is rotationally connected in the inner cavity of the moving slot 35, a moving block 36 is threadedly connected to the outer side of the threaded column 37, one end of the moving block 36 extends into the moving cavity 43, an even transmission slot 38 is formed in the detection box 5 below the moving slot 35, a fixed rod 40 is rotationally connected to one side of the detection box 5, one end of the fixed rod 40 extends into the transmission slot 38, the bottom end of the threaded column 37 extends into the transmission slot 38, the outer sides of the fixed rod 40 and the threaded column 37 are both sleeved with a first bevel gear 39 that is engaged, a visual plate 53 is arranged on one side of the detection box 5, so that the operator can clearly obtain the position of the trigger switch 42 when adjusting the position of the trigger switch 42.

[0029] The one end of the sample injector 2 is provided with a connecting head 3, the top of the switch valve 25 is provided with a fixed head 26, the outer side of the fixed head 26 is provided with two limiting blocks 27, the two sides of the connecting head 3 are both provided with a detection box 5 nozzle 4, the top of the limiting block 27 and below the detection box 5 nozzle 4 are both provided with a limiting slot 28, the limiting slot 28 is internally provided with a limiting block 29, the top of the limiting block 29 is connected with the bottom of the detection box 5 nozzle 4, the inside of the limiting block 27 and on one side of the limiting slot 28 are both provided with a connecting cavity 30, the connecting cavity 30 is internally and slidably connected with a fixed column 31, one side of the limiting block 29 is provided with a column slot 32, one end of the fixed column 31 extends into the column slot 32, one end of the fixed column 31 is provided with a connecting rod 34, the connecting cavity 30 is internally and slidably connected with a connecting spring 33 on the outer side of the connecting rod 34, one end of the connecting rod 34 extends to the outer side of the limiting block 27, so as to facilitate the fixation of the connecting head 3.

[0030] Example two

[0031] Please refer to Figure 1 With Figure 7 The top of the bottom plate 1 is provided with a placing seat 52, the placing seat 52 internally places a waste liquid bottle 51, one side of the waste liquid bottle 51 is provided with a fixed cylinder 44, a threaded rod 45 is rotationally connected in the fixed cylinder 44, the outer side of the threaded rod 45 is threadedly connected with a connecting rod 48, one side of the fixed cylinder 44 is rotationally connected with a rotating shaft 46, one end of the rotating shaft 46 extends into the fixed cylinder 44, the outer sides of the threaded rod 45 and the rotating shaft 46 are both sleeved with a second bevel gear 47 that is engaged, one end of the connecting rod 48 is provided with a sleeve head 50, the other end of the sample injector 2 is provided with a nozzle 4, the bottom of the sleeve head 50 is provided with a hose 49, the bottom of the hose 49 is connected with the top of the waste liquid bottle 51, so as to prevent the cleaning waste liquid from falling into the outside.

[0032] In summary, the liquid continuous combustion test sample injection cleaning device, when using, if the sample injector 2 needs to be cleaned, place the liquid cylinder 21 containing the liquid to be used on the top of the detection box 5, then open the switch valve 25, then the operator pulls the connecting rod 34, so that the connecting rod 34 moves to the inside of the connecting cavity 30 through the fixed column 31, at this time the bottom of the connecting head 3 is inserted into the inside of the switch valve 25, at this time the limiting block 29 is located in the limiting groove 28, then the operator releases the connecting rod 34, at this time the connecting spring 33 pushes one end of the fixed column 31 to insert into the column groove 32, at this time the bottom sleeve 20 is located above the limiting sleeve 19, at this time the bottom end of the connecting shaft 13 is inserted into the positioning groove 11, then rotate the rod 16 to drive the two-way screw rod 8 to rotate through the belt pulley 17, so that the two-way screw rod 8 drives another two-way screw rod 8 to rotate through the connecting column 18, so that the push block 10 pushes one end of the connecting column 9 to insert into the clamping groove 12, then place the waste liquid bottle 51 in the placing seat 52, then rotate the rotating shaft 46 to drive the threaded rod 45 to rotate through the second bevel gear 47, so that the connecting rod 48 pushes the sleeve head 50 to move upwards, so that the bottom end of the spray head 4 is located in the hose 49, at this time the electromagnet 41 is closed, so that the suction force between the two electromagnets 41 disappears, at this time the sample injector 2 starts to suck the liquid in the liquid cylinder 21 and then discharges it into the waste liquid bottle 51 through the spray head 4, so as to clean the sample injector.

[0033] After cleaning, the rotating shaft 46 can be reset, at this time the second bevel gear 47 drives the threaded rod 45 to reset the rotation, so that the connecting rod 48 drives the sleeve head 50 to move downwards, then the waste liquid bottle 51 is taken out to pour out the waste liquid inside, then the test mechanism is moved to the below of the spray head 4, then the sample injector 2 starts to suck the liquid in the liquid cylinder 21, at this time the piston block 23 pushes the connecting shaft 13 to move downwards, at this time the moving plate 6 moves downwards, when the moving plate 6 triggers the trigger switch 42, the external controller alarms to prompt the operator that the liquid in the liquid cylinder 21 is about to be consumed, the operator can adjust the alarm position by rotating the fixed rod 40, so as to adjust the position of the moving block 36, and then adjust the alarm position, when replacing the liquid cylinder 21, the operator rotates the rotating rod 16, at this time the rotating rod 16 drives the two-way screw rod 8 to reset the rotation through the belt pulley 17, so that the connecting column 18 resets the rotation, so that one end of the connecting column 9 moves out of the clamping groove 12, then the operator pulls the connecting rod 34, so that the connecting rod 34 drives one end of the fixed column 31 to move out of the column groove 32, then the connecting head 3 is taken out from the fixed head 26, then the liquid cylinder 21 is taken off, then the electromagnet 41 is started, so that the suction force between the two electromagnets 41 is generated, so that the moving plate 6 moves upwards to the original position.

[0034] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A liquid continuous combustion tester sample feeding and cleaning device, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is provided with a sample injector (2), and the top of the bottom plate (1) and one side of the sample injector (2) are fixedly connected with a detection box (5), the top of the detection box (5) is provided with a liquid cylinder (21), the top of the liquid cylinder (21) is provided with an on-off valve (25), the bottom of the on-off valve (25) is provided with a suction tube (22), the bottom end of the suction tube (22) extends into the liquid cylinder (21), the inside of the liquid cylinder (21) and the outside of the suction tube (22) are slidably connected with a piston block (23), the bottom of the piston block (23) and the two sides of the suction tube (22) are provided with connecting shafts (13), the inside of the detection box (5) is provided with a moving cavity (43), the inside of the moving cavity (43) is slidably connected with a moving plate (6), the bottom of the connecting shaft (13) extends into the moving cavity (43), the top of the moving plate (6) and below the connecting shaft (13) are provided with positioning grooves (11), the bottom of the connecting shaft (13) extends into the positioning groove (11), the inside of the moving plate (6) and the outside of the positioning groove (11) are provided with connecting grooves (7), the inside of the connecting groove (7) is rotatably connected with a bidirectional screw rod (8), the opposite positions of the outer sides of the bidirectional screw rod (8) are threadedly connected with push blocks (10), the top of the push block (10) is provided with a connecting column (9), the bottom of the connecting shaft (13) and one end of the connecting column (9) are provided with clamping grooves (12), one end of the connecting column (9) extends into the clamping groove (12), and the two bidirectional screw rods (8) are connected through the connecting column (18); The inside of the detection box (5) and one side of the moving cavity (43) are provided with a moving groove (35), the moving groove (35) is rotatably connected with a threaded column (37), the outer side of the threaded column (37) is threadedly connected with a moving block (36), one end of the moving block (36) extends into the moving cavity (43), the inside of the detection box (5) and below the moving groove (35) are provided with a transmission groove (38), one side of the detection box (5) is rotatably connected with a fixed rod (40), one end of the fixed rod (40) extends into the transmission groove (38), the bottom end of the threaded column (37) extends into the transmission groove (38), the outer sides of the fixed rod (40) and the threaded column (37) are provided with meshing first bevel gears (39), and one side of the detection box (5) is provided with a visual plate (53). One end of the sample injector (2) is provided with a connecting head (3), the top of the switch valve (25) is provided with a fixing head (26), the outer side of the fixing head (26) is provided with two limiting blocks (27), both sides of the connecting head (3) are provided with detection box (5) spray head (4), the top of the limiting block (27) and below the detection box (5) spray head (4) are provided with a limiting groove (28), the limiting groove (28) is provided with a limiting block (29) inside, the top of the limiting block (29) is connected with the bottom of the detection box (5) spray head (4), the inside of the limiting block (27) and one side of the limiting groove (28) are provided with a connecting cavity (30), the connecting cavity (30) is slidably connected with a fixing column (31) inside, one side of the limiting block (29) is provided with a column groove (32), one end of the fixing column (31) extends into the column groove (32), one end of the fixing column (31) is provided with a connecting rod (34), the connecting cavity (30) is slidably connected with a connecting spring (33) inside and outside the connecting rod (34), one end of the connecting rod (34) extends to the outside of the limiting block (27).

2. The sample injection and cleaning device of a liquid sustained combustion tester according to claim 1, characterized in that: One side of the detection box (5) is provided with a sliding groove (14), the sliding groove (14) is slidably connected with a sliding block (15) inside, one end of the bidirectional screw rod (8) extends into the sliding block (15), one side of the sliding block (15) inner cavity is rotatably connected with a rotating rod (16), the rotating rod (16) and the outer side of the bidirectional screw rod (8) are sleeved with a belt pulley (17) connected by a belt.

3. The sample injection and cleaning device of a liquid sustained combustion tester according to claim 2, characterized in that: One end of the rotating rod (16) extends to the outside of the sliding block (15).

4. The sample injection and cleaning device of a liquid sustained combustion tester according to claim 1, characterized in that: The outer side of the detection box (5) is fixedly sleeved with a limiting sleeve (19), the top of the limiting sleeve (19) is placed with a bottom sleeve (20), the top of the bottom sleeve (20) is connected with the bottom of the liquid cylinder (21), the top of the moving cavity (43) inner cavity and the top of the moving plate (6) are embedded with an electromagnet (41).

5. The sample injection and cleaning device of a liquid sustained combustion tester according to claim 1, characterized in that: The top of the bottom plate (1) is provided with a placing seat (52), the placing seat (52) is placed with a waste liquid bottle (51) inside, one side of the waste liquid bottle (51) is provided with a fixing cylinder (44), the fixing cylinder (44) is rotatably connected with a threaded rod (45) inside, the outer side of the threaded rod (45) is threadedly connected with a connecting rod (48), one side of the fixing cylinder (44) is rotatably connected with a rotating shaft (46), one end of the rotating shaft (46) extends into the fixing cylinder (44), the outer sides of the threaded rod (45) and the rotating shaft (46) are sleeved with a second bevel gear (47) engaged with each other, one end of the connecting rod (48) is provided with a sleeve head (50), the other end of the sample injector (2) is provided with a spray head (4), the bottom of the sleeve head (50) is provided with a hose (49), the bottom of the hose (49) is connected with the top of the waste liquid bottle (51).

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