Dust explosion demonstration experiment device

Abstract

The utility model relates to the technical field of dust explosion science popularization demonstration. The dust explosion demonstration experiment device comprises a main body structure, the main body structure comprises a base, and clamping grooves are formed in the two sides of the upper surface of the base; the protective structure comprises a protective cylinder, a clamping seat and a clamping block, the lower end of the protective cylinder is inserted into the upper surface of the base, the cover body structure comprises two groups of fixing plates and a protective cover, and the two groups of fixing plates are fixedly connected to the outer surface of one side of the upper end of the protective cylinder. The rotating handle is rotated to drive the threaded rod to rotate in the fixed shell, meanwhile, the abutting block is driven to rotate and move upwards, meanwhile, the outer surface of the lower end of the abutting block is separated from the surfaces of the two clamping columns, the fixed shell is lifted upwards, and the two clamping columns move towards the interior of the fixed shell; the fixed shell is separated from the clamping grooves in the two sides of the upper surface of the base.

Description

Technical Field

[0001] The utility model relates to the technical field of dust explosion popular science demonstration, and more specifically to a dust explosion demonstration experimental device. Background Art

[0002] The dust explosion demonstration device is a device used to show dust explosion under specific conditions. By adding an ignition source or electric spark to trigger an explosion, the process, characteristics and impact of the dust explosion can be observed. The dust explosion demonstration device can help people understand the dangers of dust explosions, learn how to prevent and control dust explosions, and ensure production and work safety.

[0003] At present, during the use of the dust explosion demonstration experimental device in the prior art, some burnt dust will be generated after the dust explosion test, and it needs to be cleaned up in order not to affect the next test. However, the protective covers of some existing experimental devices are usually fixedly connected to the base, which makes cleaning inconvenient. In addition, in the dust explosion demonstration, the impact force generated by the explosion is relatively large, and the cover of some existing equipment is directly placed on the upper end of the protective cover. Without being fixed to the protective cover, the cover may be blown away by the impact force generated by the explosion, which may cause safety hazards. Therefore, there is an urgent need for a dust explosion demonstration experimental device to solve the above problems. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides a dust explosion demonstration experimental device to solve the problems existing in the above background technology.

[0005] The utility model provides the following technical solution: a dust explosion demonstration experimental device, comprising:

[0006] The main structure includes a base, and the inner sides of the upper surface of the base are provided with engaging grooves;

[0007] The protective structure includes a protective tube, a snap-fit ​​seat and a snap-fit ​​block, and the lower end of the protective tube is inserted into the interior of the upper surface of the base:

[0008] A cover structure, the cover structure includes a fixing plate and a protective cover, and the fixing plates are provided in two groups, and the two groups of fixing plates are respectively fixedly connected to the outer surface of one side of the upper end of the protective tube;

[0009] The fixing structure is provided with two groups, and the fixing structure includes a fixing seat, and the two groups of fixing seats are respectively fixedly connected to the outer surfaces of both sides of the lower end of the protective tube.

[0010] Preferably, the main structure also includes a dust cylinder, and the dust cylinder is fixedly connected to the middle position of the upper surface of the base, and an ignition device is fixedly connected to the interior of one side of the base, and an air pipe is connected to the interior of the other side of the base, and an air pump is installed at one end of the air pipe, and a start button is fixedly connected to one end of the air pump, and an ignition button is provided on the surface of one end of the ignition device, making the operation safer.

[0011] Preferably, the snap-fit ​​seat is fixedly connected to the outer surface of the other side of the upper end of the protective tube, the lower end bearing of the snap-fit ​​block is connected to the upper surface inside the snap-fit ​​seat, and a protective pad is provided on the outer surface of the lower end of the protective tube to increase the air tightness of the lower end of the protective tube.

[0012] Preferably, the cover structure also includes a rotating shaft, and the rotating shaft is inserted into the inside of the two groups of fixed plates, and a connecting block is fixedly connected to the outer surface of the middle position of the rotating shaft, a protective cover is fixedly connected to the lower surface of one end of the connecting block, and a pull rod is fixedly connected to the inside of the other end of the connecting block, and springs are sleeved on the outer surfaces of both ends of the pull rod, a fixing rod is inserted into the inside of one end of the two groups of springs, and a plurality of groups of circular holes are opened on the upper surface of the protective cover to release the impact force generated by the explosion.

[0013] Preferably, the outer surface of one end of the protective cover is fixedly connected with a locking plate, the lower surface of the locking plate is fitted with the upper surface inside the locking seat, and the size of the inside of the locking plate is adapted to the size of the locking block, and the lower surface of the locking block is fitted with the upper surface of the locking plate. When the locking block rotates, the lower surface can be fitted with the upper surface of the locking plate, so that the position of the protective cover is fixed.

[0014] Preferably, the fixing structure also includes a fixed shell, and the fixed shell is inserted into the interior of the fixed seat, and a turning handle is inserted into the interior of the upper end of the fixed shell, the lower end of the turning handle is fixedly connected to a threaded rod, and the lower end of the threaded rod is fixedly connected to a moving block, and both sides of the lower end of the moving block are fitted with locking columns, and the sizes of the fixed shell and the two groups of locking columns are matched with the locking grooves opened on both sides of the upper surface of the base, and when the turning handle is rotated, the threaded rod and the moving block can be pushed downward, and the two groups of locking columns can be pushed outward to fix the protective tube to the base.

[0015] The technical effects and advantages of the utility model are as follows: the utility model drives the threaded rod to rotate inside the fixed shell by rotating the handle, and at the same time drives the abutment block to rotate and upward, and at the same time the outer surface of the lower end of the abutment block disengages from the surface of the two groups of engaging columns, lifts the fixed shell upward, and makes the two groups of engaging columns move toward the inside of the fixed shell. At this time, the fixed shell disengages from the engaging grooves on both sides of the upper surface of the base, and the protective tube can be removed for cleaning. This design allows the protective tube to be removed from the inside of the base, which is more convenient for cleaning the inside of the protective tube.

[0016] The protective cover and the pulling rod are driven to move by rotating the connecting block, so that the lower surface of the protective cover is fitted against the upper surface of the protective tube. Then the pulling rod pulls the two sets of springs, and at the same time the clamping plate is clamped into the interior of the upper end of the clamping seat. The clamping block is rotated so that the lower surface of the clamping block is fitted against the upper surface of the clamping plate, thereby fixing the position of the protective cover. This design allows the protective cover to be fixed to the protective tube to avoid being blown away by the impact force generated by the explosion, thereby improving the safety of the experiment to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the main structure of the utility model.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure explosion of the main structure of the utility model.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the protective structure of the utility model.

[0021] Figure 5 It is a three-dimensional structural schematic diagram of the cover structure of the utility model.

[0022] Figure 6 It is a schematic diagram of the use state of the utility model.

[0023] Figure 7 It is a schematic diagram of the use state of the engaging block of the utility model.

[0024] Figure 8 It is a schematic exploded view of the three-dimensional structure of the fixed structure of the utility model.

[0025] Fig. 9 This is a schematic diagram of the use status of the fixing structure of the utility model.

[0026] The accompanying drawings are marked as follows: 1. main structure; 11. base; 12. dust cylinder; 13. ignition device; 14. air pipe; 15. air pump; 16. start button; 2. protective structure; 21. protective cylinder; 22. snap-fit ​​seat; 23. snap-fit ​​block; 3. cover structure; 31. fixed plate; 32. rotating shaft; 33. connecting block; 34. protective cover; 35. pulling rod; 36. spring; 37. fixed rod; 38. snap-fit ​​plate; 4. fixed structure; 41. fixed seat; 42. fixed shell; 43. turning handle; 44. threaded rod; 45. moving block; 46. snap-fit ​​column. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are only examples. The dust explosion demonstration experimental device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0028] Embodiment 1

[0029] like Figures 1 to 7 As shown, the utility model provides a dust explosion demonstration experimental device, comprising: a main structure 1, the main structure 1 comprises a base 11, and the interior of both sides of the upper surface of the base 11 is provided with a snap-fit ​​groove, the main structure 1 also comprises a dust cylinder 12, and the dust cylinder 12 is fixedly connected to the middle position of the upper surface of the base 11, and the interior of one side of the base 11 is fixedly connected with an ignition device 13, the interior of the other side of the base 11 is connected with an air pipe 14, and an air pump 15 is installed at one end of the air pipe 14, and a start button 16 is fixedly connected to one end of the air pump 15, and a snap-fit ​​groove is provided inside the upper surface of the base 11, and the size of the snap-fit ​​groove is adapted to the size of the lower end of the protective cylinder 21, so that the protective cylinder 21 is more stable when inserted into the interior of the base 11, and the protective cylinder 21 is prevented from shaking when subjected to the impact of the explosion, and the stability of the protective cylinder 21 during the experiment is improved, and the start of the air pump 15 is controlled by the start button 16, so that the operator can perform the experiment at a position far away from the protective cylinder 21, and will not block the viewer's field of view, and at the same time make the operation process safer.

[0030] The protective structure 2 includes a protective tube 21, a snap-fit ​​seat 22 and a snap-fit ​​block 23, and the lower end of the protective tube 21 is inserted into the inner part of the upper surface of the base 11, the snap-fit ​​seat 22 is fixedly connected to the outer surface of the other side of the upper end of the protective tube 21, and the lower end bearing of the snap-fit ​​block 23 is connected to the upper surface inside the snap-fit ​​seat 22. A protective pad is arranged on the outer surface of the lower end of the protective tube 21. The material of the protective pad is rubber. The rubber material has good elasticity and can quickly return to its original shape after being subjected to force. The rubber material has good shock absorption performance and can reduce vibration and noise. The rubber material itself has good air tightness and can effectively seal to prevent leakage of liquid or gas, which can reduce the vibration of the protective tube 21 caused by the explosion, and can ensure the air tightness of the bottom end of the protective tube 21 to ensure the progress of the experiment. The snap-fit ​​block 23 can rotate inside the snap-fit ​​seat 22.

[0031] The cover structure 3 includes a fixing plate 31 and a protective cover 34, and the fixing plate 31 is provided with two groups, and the two groups of fixing plates 31 are respectively fixedly connected to the outer surface of one side of the upper end of the protective tube 21, and the cover structure 3 also includes a rotating shaft 32, and the rotating shaft 32 is inserted into the inside of the two groups of fixing plates 31, and a connecting block 33 is fixedly connected to the outer surface of the middle position of the rotating shaft 32, and the lower surface of one end of the connecting block 33 is fixedly connected to the protective cover 34, and the inner surface of the other end of the connecting block 33 is fixedly connected to the protective cover 34. A pulling rod 35 is connected, and springs 36 are sleeved on the outer surfaces of both ends of the pulling rod 35, and a fixing rod 37 is inserted into the interior of one end of the two sets of springs 36. When the connecting block 33 moves, it can drive the protective cover 34 and the pulling rod 35 to move. When the pulling rod 35 moves, it will pull the two sets of springs 36 to stretch and slightly lift the protective cover 34. The two sets of springs 36 can pull the pulling rod 35 through their own elastic force, thereby driving the connecting block 33 and the pulling rod 35 to rotate, so that the protective cover 34 is separated from the upper surface of the protective tube 21.

[0032] The outer surface of one end of the protective cover 34 is fixedly connected with a snap plate 38, the lower surface of the snap plate 38 is fitted with the upper surface inside the snap seat 22, and the size of the inside of the snap plate 38 is adapted to the size of the snap block 23, and the lower surface of the snap block 23 is fitted with the upper surface of the snap plate 38. The snap plate 38 can pass through the snap block 23, and then the bottom of the snap plate 38 is fitted with the upper surface inside the snap seat 22. The snap block 23 is rotated so that the lower surface of the snap block 23 is fitted with the upper surface of the snap plate 38. The position of the snap plate 38 can be fixed, thereby fixing the protective cover 34 to the upper surface of the protective tube 21.

[0033] Embodiment 2

[0034] like Figure 8 and Fig. 9 As shown, the present embodiment further proposes: a fixed structure 4, the fixed structure 4 is provided with two groups, and the fixed structure 4 includes a fixed seat 41, and the two groups of fixed seats 41 are respectively fixedly connected to the outer surfaces on both sides of the lower end of the protective tube 21, the fixed structure 4 also includes a fixed shell 42, and the fixed shell 42 is inserted into the interior of the fixed seat 41, and a turning handle 43 is inserted into the interior of the upper end of the fixed shell 42, the lower end of the turning handle 43 is fixedly connected with a threaded rod 44, and the lower end of the threaded rod 44 is fixedly connected with a moving block 45, and the two sides of the lower end of the moving block 45 are fitted with locking columns 46, the sizes of the fixed shell 42 and the two groups of locking columns 46 are adapted to the locking grooves opened inside the two sides of the upper surface of the base 11, the threaded rod 44 can rotate inside the fixed shell 42 and move up and down, and a limiting ring is provided on the outer surface of the middle position of the moving block 45, which can prevent the moving block 45 from detaching from the interior of the fixed shell 42 and limit the height of the turning handle 43 rotating upward.

[0035] The outer surfaces of the two groups of snap-fitting columns 46 are provided with limiting rings, which can limit the outward movement distance of the two groups of snap-fitting columns 46, and prevent the two groups of snap-fitting columns 46 from excessive movement and thus detaching from the interior of the fixed shell 42, and the outer surfaces of the two groups of snap-fitting columns 46 can fit with the snap-fitting grooves opened on both sides of the upper surface of the base 11, so that the fixing structure 4 is fixed to the interior of the base 11, thereby fixing the protective tube 21 and the base 11 The connection is fixed.

[0036] Working principle: When the equipment is in use, the base 11 is used to place the equipment in a suitable position, and then the dust required for the experiment is placed in the dust tube 12, and then the protective tube 21 is taken out and placed in the card slot inside the upper surface of the base 11, and the two sets of fixed shells 42 are passed through the inside of the fixed seat 41 and inserted into the inside of the card slots on both sides of the upper surface of the base 11, and the handle 43 is rotated downward to drive the threaded rod 44 and the abutting block 45 to move downward, so that the outer surface of the lower end of the abutting block 45 abuts against the surface of one end of the two sets of card columns 46, and the two sets of card columns 46 are abutted to move outward and fit with the inside of the card slot, so as to fix the connection between the protective tube 21 and the base 11;

[0037] The rotating connecting block 33 drives the rotating shaft 32 to rotate inside the two sets of fixed plates 31, and at the same time drives the protective cover 34 and the pulling rod 35 to move, so that the lower surface of the protective cover 34 fits with the upper surface of the protective tube 21, and at the same time the pulling rod 35 pulls the two sets of springs 36 to rotate and stretch on the outer surface of the fixed rod 37, and then the lower surface of the clamping plate 38 fits with the upper surface inside the clamping seat 22, and the clamping block 23 is rotated so that the lower surface of the clamping block 23 fits with the upper surface of the clamping plate 38, so that the protective cover 34 is fixed to the protective tube 21;

[0038] The ignition device 13 and the air pump 15 are powered by an external power supply, and a button on the surface of the ignition device 13 is pressed to cause a flame to spray out from one end of the ignition device 13, and then the start button 16 is pressed to start the air pump 15. The air pump 15 sprays gas through the air pipe 14, and then the dust inside the dust tube 12 is blown away. At this time, a dust explosion experiment is carried out. After the experiment, the power supply of the ignition device 13 and the air pump 15 is cut off, and the handle 43 is rotated upward to drive the threaded rod 44 and the abutment block 45 to rotate and move upward. At the same time, the outer surface of the lower end of the abutment block 45 is separated from the surface of one end of the two groups of engaging columns 46, and the fixed shell 42 is lifted upward so that the two groups of engaging columns 46 move toward the inside of the fixed shell 42. At this time, the fixed shell 42 is separated from the engaging grooves on both sides of the upper surface of the base 11, and the protective tube 21 can be removed for cleaning, and the upper surface of the base 11 and the inside of the dust tube 12 can be cleaned. The above is the entire working principle of the utility model.

[0039] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0040] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0041] Finally: The above are only preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A dust explosion demonstration experimental device, characterized in that: include: A main body structure (1), the main body structure (1) comprising a base (11), and engaging grooves are provided inside two sides of the upper surface of the base (11); A protective structure (2), the protective structure (2) comprising a protective tube (21), a snap-fit ​​seat (22) and a snap-fit ​​block (23), and the lower end of the protective tube (21) is inserted into the interior of the upper surface of the base (11): A cover structure (3), the cover structure (3) comprising a fixing plate (31) and a protective cover (34), wherein the fixing plates (31) are provided in two groups, and the two groups of fixing plates (31) are respectively fixedly connected to the outer surface of one side of the upper end of the protective tube (21); A fixing structure (4), wherein the fixing structure (4) is provided with two groups, and the fixing structure (4) comprises a fixing seat (41), and the two groups of fixing seats (41) are respectively fixedly connected to the outer surfaces of both sides of the lower end of the protective tube (21).

2. A dust explosion demonstration experimental device according to claim 1, characterized in that: The main structure (1) also includes a dust cylinder (12), and the dust cylinder (12) is fixedly connected to the middle position of the upper surface of the base (11), and the interior of one side of the base (11) is fixedly connected to an ignition device (13), and the interior of the other side of the base (11) is connected to an air pipe (14), and an air pump (15) is installed at one end of the air pipe (14), and a start button (16) is fixedly connected to one end of the air pump (15).

3. A dust explosion demonstration experimental device according to claim 1, characterized in that: The engaging seat (22) is fixedly connected to the outer surface of the other side of the upper end of the protective tube (21), and the lower end bearing of the engaging block (23) is connected to the upper surface inside the engaging seat (22).

4. A dust explosion demonstration experimental device according to claim 1, characterized in that: The cover structure (3) also includes a rotating shaft (32), and the rotating shaft (32) is inserted into the inside of the two groups of fixed plates (31), and a connecting block (33) is fixedly connected to the outer surface of the middle position of the rotating shaft (32), and a protective cover (34) is fixedly connected to the lower surface of one end of the connecting block (33), and a pulling rod (35) is fixedly connected to the inside of the other end of the connecting block (33), and springs (36) are sleeved on the outer surfaces of both ends of the pulling rod (35), and a fixing rod (37) is inserted into the inside of one end of the two groups of springs (36).

5. A dust explosion demonstration experimental device according to claim 1, characterized in that: A snap-fit ​​plate (38) is fixedly connected to the outer surface of one end of the protective cover (34); the lower surface of the snap-fit ​​plate (38) is in contact with the upper surface of the inside of the snap-fit ​​seat (22); the size of the inside of the snap-fit ​​plate (38) is matched with the size of the snap-fit ​​block (23); and the lower surface of the snap-fit ​​block (23) is in contact with the upper surface of the snap-fit ​​plate (38).

6. A dust explosion demonstration experimental device according to claim 1, characterized in that: The fixing structure (4) also includes a fixing shell (42), and the fixing shell (42) is inserted into the interior of the fixing seat (41), and a turning handle (43) is inserted into the interior of the upper end of the fixing shell (42), the lower end of the turning handle (43) is fixedly connected to a threaded rod (44), and the lower end of the threaded rod (44) is fixedly connected to a moving block (45), and the two sides of the lower end of the moving block (45) are fitted with engaging columns (46), and the size of the fixing shell (42) and the two groups of engaging columns (46) are adapted to the engaging grooves opened inside the two sides of the upper surface of the base (11).

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