A propellant toxicity test device

Abstract

The present invention belongs to the technical field of toxicity test devices, and specifically relates to a propellant toxicity test device, comprising a box body, in which a first poisoning component, a second poisoning component and a mouse fixing component are installed, a rotating groove is provided on one side of the inner part of the box body, the mouse fixing component comprises a bottom plate and a cover plate, a fixing groove is provided on the bottom plate, a plurality of drip holes are provided on both the bottom plate and the cover plate, the drip holes are connected to the fixing groove, a stepped groove is provided at one end of the rotating groove of the box body, a sealing head is sealed in the stepped groove, an adjustment plate is provided at one end of the sealing head of the bottom plate, a slot is provided on the sealing head, an opening assembly is provided at one end of the box body away from the adjustment plate, the opening assembly is rotatably connected to the cover plate, and the first poisoning component and the second poisoning component are both provided on the top of the box body. The invention solves the problem in the prior art that there is a certain risk in dripping unsymmetrical dimethylhydrazine outside the toxicity test device, and once contaminated on the test personnel, it is easy to cause poisoning of the test personnel.

Description

Technical Field

[0001] The invention belongs to the technical field of toxicity test devices, and in particular relates to a propellant toxicity test device. Background Art

[0002] Propellants, also known as propellant powders, are chemical substances that rapidly produce large quantities of high-temperature gases when burned. They are used to launch projectiles such as projectiles for firearms, rockets, and missiles. Large amounts of propellant can leak due to production accidents, equipment corrosion, or launch failures, causing acute poisoning through the respiratory tract, skin contact, and oral route. Toxicological studies of propellants are often conducted by placing mice in toxicity testing devices and exposing them to poisons. Propellant toxicity studies primarily involve exposure to nitrogen tetroxide and unsymmetrical dimethylhydrazine. Nitrogen tetroxide is a gas at room temperature, so mice are placed in the toxicity testing device and a certain amount of nitrogen tetroxide gas is introduced to conduct toxicity tests.

[0003] Since UDMH is liquid at room temperature and different parts of mice need to be contaminated with UDMH, the experimenters can only drip UDMH on the parts of the mice that need to be tested before placing the mice in the toxicity test device, and then place the mice in the toxicity test device and pass in a certain amount of nitrogen tetroxide for toxicity testing.

[0004] However, there is a certain risk in dripping unsymmetrical dimethylhydrazine outside the toxicity test device. Once it comes into contact with the test personnel, it can easily cause poisoning. Summary of the Invention

[0005] The purpose of the present invention is to provide a propellant toxicity test device to solve the problem in the prior art that there is a certain risk in dripping unsymmetrical dimethylhydrazine outside the toxicity test device, which can easily lead to poisoning of the test personnel once contaminated by it.

[0006] In order to achieve the above technical objectives, the technical solutions adopted by the present invention are as follows:

[0007] A propellant toxicity testing device comprises a box body, in which a first poisoning component, a second poisoning component and a mouse fixing component are installed, a rotating groove is provided on one side of the inner side of the box body, and the mouse fixing component is installed in the rotating groove, and the mouse fixing component comprises a bottom plate and a cover plate, a fixing groove is provided on the bottom plate, and the cover plate is slidably clamped on the bottom plate, and a plurality of drip holes are provided on the bottom plate and the cover plate, and the drip holes are connected with the fixing groove, the box body is provided with a stepped groove at one end of the rotating groove, the stepped groove passes through the box body, and a sealing head is sealed in the stepped groove, the bottom plate is provided with an adjusting plate at one end of the sealing head, a slot is provided on the sealing head, the adjusting plate is sealingly inserted in the slot, and the end of the adjusting plate is located outside the box body, and an opening cover component is provided at the end of the box body away from the adjusting plate, and the opening cover component is rotatably connected to the cover plate, and the first poisoning component and the second poisoning component are both provided at the top of the box body.

[0008] It is further defined that the first poisoning component includes a cylinder body, a push rod and a dropper, the top of the box body is provided with a mounting groove, a rotating ball is provided in the mounting groove, a through hole is provided on the rotating ball, the dropper is sealed and passed through the through hole, a first connector is provided at the bottom of the cylinder body, a one-way valve is provided in the first connector, the first connector is sealed and connected to the top of the dropper, an inner cylinder is integrally formed in the cylinder body, a plurality of through grooves are provided at the bottom of the inner cylinder, a sealing tube is slidably inserted in the inner cylinder, the push rod is inserted in the inner cylinder, a piston is provided at the bottom of the push rod, the piston is tightly connected to the side wall of the sealing tube, a cover body is threadedly connected to the top of the cylinder body, a sealing protrusion is provided on the cover body, the push rod passes through the sealing protrusion and is passed through the outside of the cover body, a spring is sleeved on the push rod, one end of the spring is connected to the top of the piston, and the other end is connected to the bottom of the sealing protrusion.

[0009] It is further defined that the second contamination component includes a tank body and a delivery pipe, the box body is provided with a first receiving groove at the top of the step groove side, the tank body is fixedly installed in the first receiving groove, and the top of the box body is provided with a vent hole, one end of the delivery pipe is connected to the tank body, and the other end is sealed and connected to the vent hole.

[0010] It is further defined that the cover opening assembly includes a pull rod, a second accommodating groove is provided at the bottom of the box body, the pull rod is located in the second accommodating groove, one end of the pull rod is sealed and passes through the end of the box body and is located outside the box body, and a second connecting head is provided at the other end, and a sealing groove is provided on the side wall of the box body corresponding to the position of the second connecting head, the cover plate is provided with a connecting column at the second connecting head, a connecting groove is provided in the second connecting head, the connecting column is inserted in the connecting groove, and multiple groups of limiting protrusions are provided on the connecting column, and multiple limiting rings are provided in the connecting groove, and the limiting protrusions are clamped between adjacent limiting rings.

[0011] It is further defined that both sides of the base plate are integrally formed with inverted L-shaped limit strips, the limit strips and the base plate form sliding grooves, and the two ends of the cover plate are respectively clamped in the two sliding grooves.

[0012] It is further defined that ball plungers are fixedly installed at the four corners of the base plate, a limiting groove is provided at the bottom of the cover plate, the top of the ball plunger is clamped in the limiting groove, the cover plate is integrally formed with a baffle at the end of the connecting column, the connecting column is integrally formed on the baffle, and the cover plate is against the bottom of the adjustment plate.

[0013] It is further defined that a sealing cover is fixedly installed on the top of the box body at the rotating ball, the sealing cover is provided with a pleated portion, the bottom of the sealing cover is fixedly connected to the top surface of the box body, and the other end is tightly sleeved on the dropper.

[0014] It is further defined that a control switch, a flow valve and a digital display are provided on the top of the tank body.

[0015] The invention adopting the above technical solution has the following advantages:

[0016] 1. By setting up a mouse fixing component and a first poisoning component, the mouse is first fixed using the bottom plate and cover plate of the fixing component, and then placed in the box. Then, the push rod in the first poisoning component is used to drip the unsymmetrical dimethylhydrazine in the inner cylinder from the dropper and into the drip holes on the bottom plate and cover plate to poison the mouse. This eliminates the need for experimenters to pre-poison the mouse, preventing the experimenters from being contaminated by the unsymmetrical dimethylhydrazine and ensuring their safety.

[0017] 2. By setting up a rotating groove and a sealing head, the mouse fixing component in the box can be rotated to achieve drip dyeing on the front and back of the mouse; by setting up a rotating ball, the second poisoning component can be rotated to drip dye on different parts of the mouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;

[0019] Figure 1 This is a schematic structural diagram of a propellant toxicity test device according to the present invention;

[0020] Figure 2 This is a schematic cross-sectional view of a propellant toxicity test device according to the present invention;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of a box in a propellant toxicity test device of the present invention;

[0022] Figure 4 This is a schematic cross-sectional view of the first poisoning component in a propellant toxicity testing device according to the present invention;

[0023] Figure 5 This is a schematic structural diagram of a mouse fixing assembly in a propellant toxicity test device of the present invention;

[0024] Figure 6 This is a schematic cross-sectional structure diagram of a pull rod and a cover plate in a propellant toxicity test device of the present invention;

[0025] Figure 7 The figure is a schematic structural diagram of the second poisoning component in a propellant toxicity testing device of the present invention.

[0026] The main component symbols are described as follows:

[0027] Box body 1, rotating groove 11, stepped groove 12, sealing head 131, slot 132, mounting groove 14, first accommodating groove 15, second accommodating groove 16, window 17, sealing plate 171, first infection component 2, cylinder 21, first connector 211, one-way valve 212, push rod 22, piston 221, dropper 23, inner cylinder 24, through groove 241, sealing tube 25, cover 26, sealing protrusion 261, spring 27, second infection component 3, Tank body 31, control switch 311, flow valve 312, digital display 313, delivery pipe 32, mouse fixing assembly 4, bottom plate 41, fixing groove 411, adjustment plate 412, limit strip 413, ball plunger 414, cover plate 42, connecting column 421, limit protrusion 422, baffle 423, drip hole 43, rotating ball 5, through hole 51, sealing cover 52, pull rod 6, second connector 61, connecting groove 611, limit ring 612. DETAILED DESCRIPTION

[0028] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that in the drawings or descriptions, similar or identical parts are numbered the same. Implementations not shown or described in the drawings are forms known to those of ordinary skill in the art. In addition, directional terms mentioned in the embodiments, such as "upper," "lower," "top," "bottom," "left," "right," "front," and "back," are merely references to the directions in the drawings and are not intended to limit the scope of protection of the present invention.

[0029] like Figures 1 to 7 As shown, a propellant toxicity test device of the present invention includes a box body 1, in which a first poisoning component 2, a second poisoning component 3 and a mouse fixing component 4 are installed. The first poisoning component 2 is used for unsymmetrical dimethylhydrazine poisoning, the second poisoning component 3 is used for nitrogen tetroxide poisoning, and the mouse fixing component 4 is used to fix mice.

[0030] A rotating groove 11 is provided on one side of the interior of the housing 1, and a mouse fixing assembly 4 is installed in the rotating groove 11. The mouse fixing assembly 4 can rotate in the rotating groove 11 so as to carry out unsymmetrical dimethylhydrazine poisoning on the front and back of the mouse. The mouse fixing assembly 4 includes a base plate 41 and a cover plate 42. A fixing groove 411 is provided on the base plate 41. The fixing groove 411 is in the shape of a mouse, with a head, feet, and tail. The mouse can be unfolded and fixed in the fixing groove 411, which is convenient for poisoning different parts of the mouse. The cover plate 42 is slidably clamped on the base plate 41, and the mouse is fixed in the fixing groove 411 by the cover plate 42 to prevent the mouse from moving at will. A number of drip holes 43 are provided on both the base plate 41 and the cover plate 42. The drip holes 43 are connected to the fixing groove 411. When the first poisoning assembly 2 is poisoning the mouse with unsymmetrical dimethylhydrazine, the unsymmetrical dimethylhydrazine can be dripped onto the mouse body through the drip holes 43.

[0031] The housing 1 has a stepped groove 12 at one end of the rotating groove 11. The stepped groove 12 runs through the housing 1 and is sealed with a sealing head 131. The bottom plate 41 is integrally formed with an adjustment plate 412 at one end of the sealing head 131. The sealing head 131 has a slot 132. The adjustment plate 412 is sealed and inserted into the slot 132, and the end of the adjustment plate 412 is located outside the housing 1. By rotating the adjustment plate 412, the mouse fixing assembly 4 can be rotated within the rotating groove 11 to switch between the front and back of the mouse. Then, through the drip holes 43 on the bottom plate 41 and the cover plate 42, different parts of the mouse can be infected with the poison.

[0032] A lid opening assembly is provided at one end of the housing 1, away from the adjustment plate 412. The lid opening assembly is rotatably connected to the cover plate 42. Both the first and second exposure assemblies 2 and 3 are located on the top of the housing 1. After the first exposure assembly 2 is used to expose mice to unsymmetrical dimethylhydrazine, the lid opening assembly is controlled to open the cover plate 42, allowing mice to move freely within the housing 1 and allowing observation of their condition after exposure.

[0033] The first poisoning component 2 includes a cylinder 21, a push rod 22 and a dropper 23. A mounting groove 14 is provided on the top of the box 1, and a rotating ball 5 is provided in the mounting groove 14. The rotating ball 5 is provided with a through hole 51. The dropper 23 is sealed and penetrates through the through hole 51. When in use, the dropper 23 can slide in the through hole 51, and by rotating the ball 5, the dropper 23 can correspond to different drop holes 43 respectively, so that unsymmetrical dimethylhydrazine can be dripped onto different parts of the mouse.

[0034] The bottom of the barrel 21 is provided with a first connector 211, which houses a one-way valve 212. The first connector 211 is sealed to the top of the dropper 23. An inner barrel 24 is integrally formed within the barrel 21. The space between the inner wall of the barrel 21 and the outer wall of the inner barrel 24 is used to load UDMH. The bottom of the inner barrel 24 is provided with multiple through-slots 241, which allow UDMH to enter the inner barrel 24. A sealing tube 25 is slidably inserted into the inner barrel 24 to seal the through-slots 241.

[0035] The push rod 22 is inserted into the inner cylinder 24. A piston 221 is provided at the bottom of the push rod 22. The piston 221 is tightly connected to the side wall of the sealing tube 25. A cover body 26 is threadedly connected to the top of the cylinder body 21 for sealing the cylinder body 21 and the inner cylinder 24. A sealing protrusion 261 is provided on the cover body 26. The push rod 22 passes through the sealing protrusion 261 and is provided outside the cover body 26. A spring 27 is sleeved on the push rod 22. One end of the spring 27 is connected to the top of the piston 221, and the other end is connected to the bottom of the sealing protrusion 261. During use, the push rod 22 is pressed downward to squeeze the gas in the inner tube 24 into the dropper 23 through the first connector 211. During this process, the piston 221 drives the sealing tube 25 downward to block the through groove 241, and the spring 27 is stretched; then, the push rod 22 is released, and the spring 27 causes the push rod 22 and the piston 221 to move upward, and the piston 221 drives the sealing tube 25 upward to open the through groove 241; during this process, the one-way valve 212 is closed, the inner tube is in a negative pressure state, and UDMH enters the inner tube through the through groove 241; then, the push rod 22 is pressed downward again to drip UDMH from the dropper 23 into the drip hole 43.

[0036] The second exposure assembly 3 includes a tank 31 and a delivery pipe 32. The tank 31 is filled with compressed nitrogen tetroxide gas. The housing 1 has a first receiving tank 15 at the top, adjacent to the stepped groove 12. The tank 31 is securely mounted within the first receiving tank 15. A vent is provided at the top of the housing 1. The delivery pipe 32 is connected to the tank 31 at one end and sealed within the vent at the other end. The delivery pipe 32 delivers nitrogen tetroxide gas into the housing 1, exposing the mice to nitrogen tetroxide.

[0037] The lid opening assembly includes a pull rod 6. A second receiving groove 16 is defined at the bottom of the housing 1. The second receiving groove 16 is used to accommodate the moved cover plate 42. The pull rod 6 is located within the second receiving groove 16. One end of the pull rod 6 is sealed and passes through the end of the housing 1 and is located outside the housing 1. The other end is integrally formed with a second connector 61. A sealing groove is defined in the side wall of the housing 1 at the position corresponding to the second connector 61. By providing the sealing groove, when the pull rod 6 is pulled so that the second connector 61 is located within the sealing groove, the housing 1 can be sealed, preventing gas inside the housing 1 from leaking from the connection between the pull rod 6 and the housing 1.

[0038] The cover plate 42 is provided with a connecting post 421 at the second connector 61. A connecting slot 611 is defined within the second connector 61. The connecting post 421 is inserted into the connecting slot 611. Multiple sets of limiting protrusions 422 are integrally formed on the connecting post 421. Multiple limiting rings 612 are integrally formed within the connecting slot 611. The limiting protrusions 422 are positioned between adjacent limiting rings 612. The limiting rings 612 and limiting protrusions 422 allow the pull rod 6 to be removably connected to the cover plate 42. When the connecting post 421 is inserted into the second connector 61, the limiting protrusions 422 align with the connecting slot 611. Once inserted into the connecting slot 611, the pull rod 6 is rotated so that the limiting protrusions 422 engage between the limiting rings 612. Pulling the pull rod 6 then moves the cover plate 42, freeing it from securing the mouse in the fixing slot 411 of the base plate 41, facilitating observation of the mouse's condition after infection.

[0039] Both sides of the bottom plate 41 are integrally formed with an inverted L-shaped limit strip 413, which forms a slide groove with the bottom plate 41. The two ends of the cover plate 42 are respectively clamped in the two slide grooves. By setting the slide groove, the cover plate 42 can only slide on the bottom plate 41, preventing the cover plate 42 from moving up and down.

[0040] Ball plungers 414 are fixedly mounted at each corner of the base plate 41. The bottom of the cover plate 42 has a limit slot, into which the top of the ball plunger 414 is locked. The ball plunger 414 secures the base plate 41 and the cover plate 42, preventing relative movement between the two plates, which could potentially allow mice to escape. A baffle 423 is integrally formed at the end of the connecting post 421 of the cover plate 42. The connecting post 421 is integrally formed on the baffle 423, and the cover plate 42 abuts against the bottom of the adjustment plate 412. The baffle 423 and the adjustment plate 412 limit the sliding range of the cover plate 42, preventing it from sliding freely.

[0041] A sealing cover 52 is fixedly mounted on the top of the housing 1, over the rotating ball 5. This seal prevents gas from leaking from the housing 1 through the rotating ball 5. The sealing cover 52 is provided with a pleated portion. The bottom of the sealing cover 52 is fixedly connected to the top of the housing 1, and the other end tightly fits over the dropper 23. The pleated portion prevents the sealing cover 52 from interfering with the rotational flexibility of the dropper 23. A window 17 is provided at the top of the housing 1, and a sealing plate 171 is sealed within the window 17. By opening the sealing plate 171, the mouse inside the housing 1 can be removed through the window 17.

[0042] A control switch 311, a flow valve 312 and a digital display 313 are provided on the top of the tank body 31. The control switch 311 is used to open and close the tube body, the flow valve 312 is used to count the flow of nitrogen tetroxide gas, and the digital display 313 is used to display the flow value of nitrogen tetroxide gas, which is convenient for the test personnel to control.

[0043] When using the propellant toxicity test device of the present invention, the mouse securing assembly 4 is first removed from the box 1 and the cover 42 is opened. Subsequently, the mouse is placed in the securing grooves 411 of the bottom plate 41, with its head, feet, body, and tail aligned with the securing grooves 411. The cover 42 is then gradually slid to secure the mouse in the securing grooves 411. The mouse securing assembly 4 and the sealing head 131 are then placed together in the box 1, which is then sealed with the sealing head 131.

[0044] When poisoning with unsymmetrical dimethylhydrazine, press the push rod 22 downward to squeeze the gas in the inner tube 24 into the dropper 23 from the first connector 211. During this process, the piston 221 drives the sealing tube 25 downward to block the through groove 241, and the spring 27 is stretched; then release the push rod 22, the spring 27 causes the push rod 22 and the piston 221 to move upward, and the piston 221 drives the sealing tube 25 upward to open the through groove 241; the unsymmetrical dimethylhydrazine enters the inner tube through the through groove 241; then rotate the cylinder 21 to align the dropper 23 with the drip hole 43 to be dripped; by rotating the adjustment plate 412, the mouse fixing device is flipped and the front and back sides are switched. After determining the dripping position, press the push rod 22 downward again to drip the unsymmetrical dimethylhydrazine from the dropper 23 into the drip hole 43 to drip-dye the mouse.

[0045] After the unsymmetrical dimethylhydrazine poisoning is completed, the cover plate 42 is moved by pulling the pull rod 6, so that the cover plate 42 is separated from the mouse in the fixing groove 411 of the bottom plate 41, so that the mouse can move freely; then the nitrogen tetroxide poisoning is carried out, and the control switch 311 is turned on to allow the nitrogen tetroxide gas in the tank 31 to enter the box 1 through the delivery pipe 32, and the amount of nitrogen tetroxide delivered is observed through the digital display 313. When the required value is reached, it is stopped, and the activity of the mouse can be observed subsequently.

[0046] The above describes in detail the propellant toxicity test device provided by the present invention. The description of the specific embodiments is intended only to facilitate understanding of the method and core concepts of the present invention. It should be noted that those skilled in the art will readily appreciate that various improvements and modifications may be made to the present invention without departing from the principles of the present invention, and such improvements and modifications are intended to fall within the scope of protection of the claims.

Claims

1. A propellant toxicity test device, comprising a housing, characterized in that: A first poisoning component, a second poisoning component and a mouse fixing component are installed in the box body, a rotating groove is provided on one side of the inner side of the box body, and the mouse fixing component is installed in the rotating groove, and the mouse fixing component includes a bottom plate and a cover plate, a fixing groove is provided on the bottom plate, and the cover plate is slidably clamped on the bottom plate, and a plurality of drip holes are provided on the bottom plate and the cover plate, and the drip holes are connected with the fixing groove, and the box body is provided with a stepped groove at one end of the rotating groove, and the stepped groove passes through the box body, and a sealing head is sealed in the stepped groove, and an adjusting plate is provided at one end of the sealing head of the bottom plate, and a slot is provided on the sealing head, and the adjusting plate is sealingly inserted in the slot, and the end of the adjusting plate is located outside the box body, and an opening cover component is provided at one end of the box body away from the adjusting plate, and the opening cover component is rotatably connected to the cover plate, and the first poisoning component and the second poisoning component are both provided at the top of the box body; The first poisoning component includes a cylinder body, a push rod and a dropper, the top of the box body is provided with a mounting groove, a rotating ball is provided in the mounting groove, a through hole is provided on the rotating ball, the dropper is sealed and penetrated in the through hole, a first connector is provided at the bottom of the cylinder body, a one-way valve is provided in the first connector, the first connector is sealed and connected to the top of the dropper, an inner cylinder is integrally formed in the cylinder body, a plurality of through grooves are provided at the bottom of the inner cylinder, a sealing tube is slidably inserted in the inner cylinder, the push rod is inserted in the inner cylinder, a piston is provided at the bottom of the push rod, the piston is tightly connected to the side wall of the sealing tube, a cover body is threadedly connected to the top of the cylinder body, a sealing protrusion is provided on the cover body, the push rod passes through the sealing protrusion and is penetrated outside the cover body, a spring is sleeved on the push rod, one end of the spring is connected to the top of the piston, and the other end is connected to the bottom of the sealing protrusion; The second contamination component includes a tank body and a delivery pipe. The tank body is provided with a first receiving groove at the top of the stepped groove side. The tank body is fixedly installed in the first receiving groove. A vent hole is provided at the top of the tank body. One end of the delivery pipe is connected to the tank body, and the other end is sealed in the vent hole. The cover opening assembly includes a pull rod, a second accommodating groove is provided at the bottom of the box body, the pull rod is located in the second accommodating groove, one end of the pull rod is sealed and passes through the end of the box body and is located outside the box body, and a second connecting head is provided at the other end, and a sealing groove is provided on the side wall of the box body corresponding to the position of the second connecting head, the cover plate is provided with a connecting column at the second connecting head, a connecting groove is provided in the second connecting head, the connecting column is inserted in the connecting groove, a plurality of groups of limiting protrusions are provided on the connecting column, a plurality of limiting rings are provided in the connecting groove, and the limiting protrusions are clamped between adjacent limiting rings.

2. A propellant toxicity test device according to claim 1, characterized in that: Both sides of the bottom plate are integrally formed with inverted L-shaped limiting strips, the limiting strips and the bottom plate form sliding grooves, and the two ends of the cover plate are respectively clamped in the two sliding grooves.

3. A propellant toxicity test device according to claim 2, characterized in that: Ball plungers are fixedly installed at the four corners of the base plate, a limiting groove is provided at the bottom of the cover plate, the top of the ball plunger is clamped in the limiting groove, the cover plate is integrally formed with a baffle at the end of the connecting column, the connecting column is integrally formed on the baffle, and the cover plate is against the bottom of the adjustment plate.

4. A propellant toxicity test device according to claim 3, characterized in that: A sealing cover is fixedly installed on the top of the box body at the rotating ball. The sealing cover is provided with a pleated portion. The bottom of the sealing cover is fixedly connected to the top surface of the box body, and the other end is tightly sleeved on the dropper.

5. A propellant toxicity test device according to claim 4, characterized in that: A control switch, a flow valve and a digital display are provided on the top of the tank body.

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