A sterilization device for molecular biology experimental instruments

Abstract

This invention discloses a sterilization device for molecular biology experimental instruments, belonging to the field of sterilization devices. The device includes a housing with a vertically slidable basket for holding the biological experimental instruments. The outer wall of the basket is fitted against the inner wall of a cylinder. Multiple through holes are formed on the cylinder plate. A scrubbing mechanism for washing the biological experimental instruments in the basket is located inside the housing. A drive unit is located at the top of the housing to drive the scrubbing mechanism. The cylinder slides vertically back and forth within the housing under the control of the drive unit. By slidably connecting the cylinder to the basket and allowing the cylinder to slide vertically back and forth within the housing, the invention enables the disinfectant solution inside the cylinder to be sprayed upwards through the through holes on the bottom of the basket onto the biological experimental instruments. This ensures that the instruments come into full contact with the disinfectant solution while simultaneously being rinsed by the disinfectant. Combined with the scrubbing mechanism, this results in a more effective cleaning of the biological experimental instruments.

Description

Technical Field

[0001] This invention relates to the field of disinfection device technology, specifically a disinfection device for molecular biology experimental instruments. Background Technology

[0002] Molecular biology is the science that studies life phenomena at the molecular level. It elucidates the essence of various life phenomena by studying the structure, function, and biosynthesis of biological macromolecules. The research content of molecular biology includes various life processes, such as photosynthesis, the molecular mechanisms of development, the mechanisms of neural activity, and the occurrence of cancer. In molecular biology experiments, it is necessary to clean the experimental instruments regularly.

[0003] Manual cleaning is not only slow, but also carries the risk of leaving harmful substances such as DNA or RNA viruses on biological experimental instruments, which can cause harm to people. Existing simple setups typically involve adding disinfectant and using a motor to drive brushes to clean biological experimental instruments. This method is not convenient for thoroughly cleaning biological experimental instruments, and sometimes it is necessary to manually turn the instruments over. More complex setups use ultrasonic cleaning. Although ultrasonic cleaners are usually equipped with shielding covers, if the shielding covers fall off and are not noticed by personnel, the ultrasonic waves can penetrate the human body and cause harm. Summary of the Invention

[0004] The purpose of this invention is to provide a sterilization device for molecular biology experimental instruments, which has the advantage of being able to thoroughly clean biological experimental instruments, and solves the problems of incomplete cleaning and harm to the health of users caused by existing devices.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sterilization device for molecular biology experimental instruments, comprising a box body, wherein a placement basket for placing biological experimental instruments is vertically slidably connected to the box body, and a cylinder for holding disinfectant solution is vertically slidably connected to the bottom of the placement basket inside the box body, the outer wall of the placement basket is in contact with the inner wall of the cylinder, a circular plate is fixedly connected to the bottom of the placement basket, and multiple through holes are provided on the circular plate, a brushing mechanism for brushing the biological experimental instruments in the placement basket is provided inside the box body, and a driving part for driving the brushing mechanism is provided at the upper part of the box body, wherein the cylinder slides vertically back and forth inside the box body under the control of the driving part.

[0006] Preferably, the drive unit includes a motor, the output end of which is fixedly connected to a drive shaft, the drive shaft passing through the top wall of the housing and fixedly connected to a sun gear, a gear ring fixedly connected inside the housing, a planetary gear between the gear ring and the sun gear, the planetary gear meshing with the sun gear and the gear ring, and a stirring rod fixedly connected to the lower surface of both the planetary gear and the sun gear.

[0007] Preferably, the scrubbing mechanism includes multiple cleaning brushes, which are respectively fixedly connected to the bottom of multiple stirring rods.

[0008] Preferably, two mounting plates are symmetrically fixedly connected to both sides of the placement basket, and grooves that cooperate with the two mounting plates are opened on the side wall of the box. Two symmetrically arranged electric screws are rotatably connected to the bottom wall of the box, and threaded holes that cooperate with the two electric screws are opened in the middle of the two mounting plates.

[0009] Preferably, a circular ring is rotatably connected to the lower surface of the toothed ring, and multiple through holes adapted to multiple stirring rods are opened on the circular ring. Two mounting handles are symmetrically and fixedly connected to the upper end face of the cylinder, and a slider is fixedly connected to the top of each of the two mounting handles. A ring-shaped wavy groove connected end to end is opened on the side wall of the circular ring, and the slider is slidably connected in the groove.

[0010] Preferably, two symmetrically arranged first piston cylinders are fixedly connected to the bottom wall of the box body, and two symmetrically arranged first piston rods are fixedly connected to the lower surface of the cylinder, with the two first piston rods slidably connected inside the two first piston cylinders respectively.

[0011] Preferably, the outer wall of the housing is provided with an extraction mechanism for extracting disinfectant from the cylinder. The extraction mechanism includes a receiving box, a bracket is fixedly connected to the receiving box, a second piston cylinder is fixedly connected to the bracket, a second piston rod is slidably connected inside the second piston cylinder, and a rectangular plate is elastically connected to one end of the second piston rod away from the second piston cylinder. The rectangular plate is slidably connected inside the receiving box and fits against the inner wall of the receiving box. An air extraction pipe and an air exhaust pipe are fixedly connected to the side wall of the first piston cylinder. Both the air extraction pipe and the air exhaust pipe are provided with one-way valves. The end of the air extraction pipe away from the first piston cylinder passes through the side wall of the housing and communicates with the second piston cylinder.

[0012] Preferably, a first telescopic rod is fixedly connected between the second piston rod and the rectangular plate, and a tension spring is sleeved on the first telescopic rod. The two ends of the tension spring are fixedly connected to the rectangular plate and the first telescopic rod, respectively. An extraction tube is fixedly connected between the receiving box and the cylinder. A solenoid valve is provided on the extraction tube. A pressure-sensitive switch for controlling the solenoid valve is provided inside the second piston cylinder. The second piston rod and the pressure-sensitive switch intermittently abut against each other.

[0013] Preferably, a pressure relief pipe is fixedly connected to the second piston cylinder, and a first valve is provided on the pressure relief pipe. A pressure stabilizing pipe is fixedly connected to the top wall of the receiving box, and a discharge pipe is fixedly connected to the side wall of the receiving box. Both the pressure stabilizing pipe and the discharge pipe are provided with a second valve.

[0014] Preferably, a door is rotatably connected to the box body, and a locking mechanism for controlling the opening and closing of the door is provided on the receiving box. The locking mechanism includes a U-shaped stop bar, a slide block is fixedly connected to the side wall of the receiving box, the U-shaped stop bar is slidably connected in the slide block, a vertical plate is fixedly connected to the side of the U-shaped stop bar away from the door, a second telescopic rod is fixedly connected between the vertical plate and the slide block, a spring is sleeved on the second telescopic rod, and the two ends of the spring are fixedly connected to the slide block and the vertical plate respectively. The rectangular plate intermittently abuts against the U-shaped stop bar.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. This invention features a cylindrical tube that slides slidably with a placement basket, allowing the tube to slide vertically back and forth within the box. This enables the disinfectant solution inside the tube to be sprayed upwards through the through-holes on the bottom circular plate of the placement basket onto the biological experimental instruments. This ensures that the biological experimental instruments are in full contact with the disinfectant solution while simultaneously being rinsed by the disinfectant, thus removing any DNA or RNA residues from the instruments. Combined with a brushing mechanism, the cleaning effect on DNA or RNA residues from the biological experimental instruments is further enhanced.

[0017] 2. By setting up a container, the present invention enables the disinfectant in the cylinder to be extracted into the container through the extraction tube and stored therein, thus avoiding the leakage of disinfectant and causing infection.

[0018] 3. This invention, by setting a U-shaped baffle, prevents the cabinet door from being opened and causing infection to the user if the disinfectant solution has not been drained. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure at the toothed ring of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the circular plate in this invention;

[0023] Figure 5 This is a schematic diagram of the structure of the first piston cylinder of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure at the ring of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the slider in this invention;

[0026] Figure 8This is a schematic diagram of the structure at the basket placement point of the present invention;

[0027] Figure 9 This is a schematic diagram of the rectangular plate structure of the present invention;

[0028] Figure 10 This is a schematic diagram of the structure of the U-shaped stop bar of the present invention;

[0029] Figure 11 This is a schematic diagram of the structure of the second valve in this invention.

[0030] In the diagram: 1. Box body; 11. Box door; 12. Placement basket; 13. Mounting plate; 14. Electric screw; 15. Circular plate; 16. Cylinder; 17. Mounting handle; 18. Slider; 19. High-temperature steam inlet pipe; 2. Motor; 21. Drive shaft; 22. Sun gear; 23. Planetary gear; 24. Gear ring; 25. Stirring rod; 26. Cleaning brush; 27. Ring; 28. Slide groove; 3. First piston cylinder; 31. First piston rod; 32. Exhaust pipe; 33. 34. Air extraction pipe; 35. One-way valve; 36. Second piston cylinder; 37. Second piston rod; 38. Pressure relief pipe; 49. First valve; 401. Container box; 41. Bracket; 42. Extraction pipe; 43. Solenoid valve; 44. Pressure-sensitive switch; 45. Rectangular plate; 46. First telescopic rod; 47. Tension spring; 48. Pressure stabilizing pipe; 49. Discharge pipe; 502. Second valve; 51. Slide seat; 52. U-shaped stop bar; 53. Second telescopic rod; 54. Spring; 55. Vertical plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 8This invention provides a technical solution: a sterilization device for molecular biology experimental instruments, comprising a box body 1, a high-temperature steam inlet pipe 19 fixedly connected to the top of the box body 1, a placement basket 12 for placing biological experimental instruments vertically slidably connected to the box body 1, a cylinder 16 for holding disinfectant solution vertically slidably connected to the bottom of the placement basket 12 inside the box body 1, the outer wall of the placement basket 12 being in contact with the inner wall of the cylinder 16, a circular plate 15 fixedly connected to the bottom of the placement basket 12, the circular plate 15 having multiple through holes, a brushing mechanism for brushing the biological experimental instruments inside the placement basket 12 being provided inside the box body 1, and a driving part for driving the brushing mechanism being provided at the top of the box body 1, the cylinder 16 being vertically reciprocating within the box body 1 under the control of the driving part.

[0034] High-temperature steam is introduced through the high-temperature steam inlet pipe 19, causing the DNA and RNA residues on the biological experimental instruments inside chamber 1 to be completely inactivated by the high temperature. The high-temperature steam inlet pipe 19 is connected to an external steam generator with temperature and pressure control functions. The chamber 1 is designed to place the biological experimental instruments to be cleaned, isolating any potentially harmful residues from the outside environment. By controlling the placement basket 12 to slide vertically downwards inside chamber 1, a certain gap is created between the placement basket 12 and the washing mechanism. The biological experimental instruments can be placed into the placement basket 12 through this gap. After the biological experimental instruments are placed, the placement basket 12 is controlled to slide downwards. The upward movement allows the scrubbing mechanism to contact the biological experimental instruments inside the placement basket 12. Activating the drive unit initiates the scrubbing mechanism to clean the biological experimental instruments inside the placement basket 12. Simultaneously, the drive unit controls the cylinder 16 to slide vertically back and forth within the housing 1, allowing the disinfectant solution inside the cylinder 16 to be sprayed upwards onto the biological experimental instruments through the through-holes on the bottom circular plate 15 of the placement basket 12. This ensures that the biological experimental instruments are in full contact with the disinfectant solution while also being rinsed by the disinfectant. Combined with the scrubbing mechanism, this completely removes high-temperature inactivated DNA and RNA residues from the biological experimental instruments, thereby preventing cross-contamination of the instruments.

[0035] Reference Figures 1-3 The drive unit includes a motor 2, the output end of which is fixedly connected to a drive shaft 21. The drive shaft 21 passes through the top wall of the housing 1 and is fixedly connected to a sun gear 22. A gear ring 24 is fixedly connected inside the housing 1. A planetary gear 23 is provided between the gear ring 24 and the sun gear 22. The planetary gear 23 meshes with the sun gear 22 and the gear ring 24. A stirring rod 25 is fixedly connected to the lower surface of both the planetary gear 23 and the sun gear 22.

[0036] When the motor 2 is started, the drive shaft 21 rotates. At this time, the sun gear 22, which is fixedly connected to the bottom of the drive shaft 21, rotates. The sun gear 22 then drives the planetary gear 23, which meshes with it, to rotate. Since the planetary gear 23 meshes with the gear ring 24, and the gear ring 24 is fixedly connected to the inside of the housing 1, the planetary gear 23 can roll inside the gear ring 24. At this time, the stirring rod 25, which is fixedly connected to the bottom of the planetary gear 23, can rotate on its own axis and revolve around the drive shaft 21 as the center. At this time, the multiple stirring rods 25 can stir the disinfectant and biological experimental instruments in the placement basket 12, so that the biological experimental instruments are in full contact with the disinfectant. At the same time, the biological experimental instruments are stirred by the stirring rods 25 and roll inside the placement basket 12. When the biological experimental instruments roll inside the placement basket 12, they can be rinsed by the disinfectant from all directions, increasing the cleaning and disinfection effect of the biological experimental instruments.

[0037] Reference Figure 3 The scrubbing mechanism includes multiple cleaning brushes 26, which are fixedly connected to the bottom of multiple stirring rods 25.

[0038] When the stirring rod 25 rotates, the cleaning brush 26, which is fixedly connected to the bottom of the stirring rod 25, rotates synchronously. At this time, the cleaning brush 26 can scrub the biological experimental instruments in the basket 12, so that DNA or RNA residues that are not easily washed away by disinfectant are brushed off. At the same time, the biological experimental instruments are constantly turned over by the stirring rod 25, so that the cleaning brush 26 can scrub the biological experimental instruments in all directions, so that DNA or RNA residues on the biological experimental instruments are thoroughly cleaned, thus avoiding the occurrence of infection due to poor equipment.

[0039] Reference Figure 2 and Figure 3 Two mounting plates 13 are symmetrically fixedly connected to both sides of the basket 12. The side wall of the box 1 is provided with grooves that cooperate with the two mounting plates 13. The bottom wall of the box 1 is rotatably connected with two symmetrically arranged electric screws 14. The middle of the two mounting plates 13 is provided with threaded holes that cooperate with the two electric screws 14.

[0040] Because the housing 1 has grooves that fit the two mounting plates 13, the placement basket 12, which is fixedly connected to the mounting plates 13, can slide vertically in the housing 1 without rotating. This ensures the cleaning effect of the cleaning brush 26 on the biological experimental instruments in the placement basket 12. By controlling the synchronous rotation of the two electric screws 14, the two mounting plates 13 can slide vertically in the axial direction on the electric screws 14. This allows the placement basket 12, which is fixedly connected to the mounting plates 13, to slide vertically back and forth in the axial direction. This allows the distance between the placement basket 12 and the cleaning brush 26 to be adjusted, making it easier to place the biological experimental instruments in the placement basket 12. At the same time, because the vertical position of the placement basket 12 is controllable, the distance between the placement basket 12 and the cleaning brush 26 can be controlled according to the size of the biological experimental instruments, so that it can adapt to cleaning biological experimental instruments of different sizes.

[0041] Reference Figure 2 , Figure 6 and Figure 7 A ring 27 is rotatably connected to the lower surface of the toothed ring 24. The ring 27 has multiple through holes that are adapted to multiple stirring rods 25. Two mounting handles 17 are symmetrically and fixedly connected to the upper end face of the cylinder 16. A slider 18 is fixedly connected to the top of each mounting handle 17. A ring-shaped wave-shaped groove 28 with the ends connected is provided on the side wall of the ring 27. The slider 18 is slidably connected in the groove 28.

[0042] Multiple stirring rods 25 pass through the ring 27 and can rotate relative to the ring 27, thus their rotation is not interfered with. Simultaneously, since the multiple stirring rods 25 revolve around the drive shaft 21, and the ring 27 and the drive shaft 21 are on the same axis, the multiple stirring rods 25 can drive the ring 27 to rotate at the bottom of the toothed ring 24. Because the cylinder 16 slides vertically within the housing 1 and is restricted from rotating, the ring 27 rotates relative to the cylinder 16. At this time, the slider 18 on the mounting handle 17 fixedly connected to the upper end face of the cylinder 16 can rotate relative to the side wall of the ring 27. The chute 28 slides relative to each other. Since the shape of the chute 28 is a ring-shaped wave connected end to end, the vertical position of the slider 18 can change up and down when the ring 27 rotates. This causes the cylinder 16 to slide vertically back and forth inside the box 1. Since the outer wall of the basket 12 is in contact with the inner wall of the cylinder 16, the pressure between the cylinder 16 and the basket 12 can change between positive and negative pressure when the cylinder 16 slides vertically back and forth relative to the basket 12. This allows the disinfectant in the cylinder 16 to be sprayed upward through the through hole on the circular plate 15 to the biological experimental instrument for rinsing.

[0043] Example 2

[0044] Reference Figure 2 , Figure 5 and Figure 7 Furthermore, based on Embodiment 1, two symmetrically arranged first piston cylinders 3 are fixedly connected to the bottom wall of the housing 1, and two symmetrically arranged first piston rods 31 are fixedly connected to the lower surface of the cylinder 16. The two first piston rods 31 are slidably connected inside the two first piston cylinders 3 respectively.

[0045] At least two sets of first piston cylinders 3 and corresponding first piston rods 31 are provided. By providing two or more sets of first piston cylinders 3 and first piston rods 31, the cylinder 16 will not rotate. Since the first piston cylinder 3 is fixedly connected to the housing 1, and the first piston rod 31 is fixedly connected to the cylinder 16 and slidably connected to the first piston cylinder 3, the movement trajectory of the cylinder 16 is restricted to vertical reciprocating sliding. This prevents the cylinder 16 from rotating synchronously with the ring 27, allowing the slider 18 to slide within the groove 28, thus ensuring the stable vertical lifting and lowering of the cylinder 16.

[0046] Reference Figure 1 , Figure 2 , Figure 5 and Figure 9 The outer wall of the housing 1 is provided with an extraction mechanism for extracting disinfectant from the cylinder 16. The extraction mechanism includes a receiving box 4, a bracket 401 is fixedly connected to the receiving box 4, a second piston cylinder 35 is fixedly connected to the bracket 401, a second piston rod 36 is slidably connected inside the second piston cylinder 35, a rectangular plate 44 is elastically connected to the end of the second piston rod 36 away from the second piston cylinder 35, the rectangular plate 44 is slidably connected inside the receiving box 4 and fits against the inner wall of the receiving box 4, an air extraction pipe 33 and an exhaust pipe 32 are fixedly connected to the side wall of the first piston cylinder 3, a one-way valve 34 is provided on both the air extraction pipe 33 and the exhaust pipe 32, and the end of the air extraction pipe 33 away from the first piston cylinder 3 passes through the side wall of the housing 1 and communicates with the second piston cylinder 35.

[0047] The bracket 401 secures the second piston cylinder 35. When the cylinder 16 slides vertically back and forth within the housing 1, the first piston rod 31, fixedly connected to the bottom of the cylinder 16, can slide back and forth within the first piston cylinder 3. At this time, the pressure within the first piston cylinder 3 alternates between positive and negative. One-way valves 34 are installed on both the exhaust pipe 32 and the suction pipe 33 of the first piston cylinder 3. Thus, the first piston cylinder 3 can gradually extract air from the second piston cylinder 35 through the suction pipe 33. The air extracted from the second piston cylinder 35 into the first piston cylinder 3 is finally discharged through the exhaust pipe. When the trachea 32 is discharged, the second piston rod 36 gradually slides into the second piston cylinder 35, and then the second piston rod 36 pulls the rectangular plate 44. Since the second piston rod 36 and the rectangular plate 44 are elastically connected, and the rectangular plate 44 is in contact with the inner wall of the container 4, when the pressure in the container 4 does not change, the position between the rectangular plate 44 and the container 4 will only change slightly or not at all. At this time, a negative pressure will be generated in the space between the rectangular plate 44 and the container 4. The generation of this negative pressure has a tendency to draw out the disinfectant in the cylinder 16.

[0048] Reference Figure 1 , Figure 2 , Figure 5 and Figure 9 A first telescopic rod 45 is fixedly connected between the second piston rod 36 and the rectangular plate 44. A tension spring 46 is sleeved on the first telescopic rod 45. The two ends of the tension spring 46 are fixedly connected to the rectangular plate 44 and the first telescopic rod 45, respectively. An extraction tube 41 is fixedly connected between the receiving box 4 and the cylinder 16. A solenoid valve 42 is provided on the extraction tube 41. A pressure-sensitive switch 43 for controlling the solenoid valve 42 is provided inside the second piston cylinder 35. The second piston rod 36 and the pressure-sensitive switch 43 intermittently abut against each other.

[0049] With the solenoid valve 42 closed, when the second piston rod 36 slides into the second piston cylinder 35, the first telescopic rod 45 is stretched, and the tension spring 46 is stretched, giving the tension spring 46 a tendency to pull the rectangular plate 44. As the second piston rod 36 continues to slide into the second piston cylinder 35, it eventually contacts the pressure-sensitive switch 43 inside the second piston cylinder 35 and squeezes it. At this time, the solenoid valve 42, controlled by the pressure-sensitive switch 43, opens, and the negative pressure inside the container 4 is released. The container 4 can then extract the disinfectant from the cylinder 16 into the container 4 through the extraction tube 41 for storage, preventing the disinfectant from leaking out and causing infection. The second piston rod 36 has sufficient length, allowing the cylinder 16 to cycle up and down a sufficient number of times to rinse the biological experimental instruments inside the basket 12.

[0050] Reference Figure 5 and Figure 11A pressure relief pipe 37 is fixedly connected to the second piston cylinder 35. A first valve 38 is provided on the pressure relief pipe 37. A pressure stabilizing pipe 47 is fixedly connected to the top wall of the receiving box 4. A discharge pipe 48 is fixedly connected to the side wall of the receiving box 4. A second valve 49 is provided on both the pressure stabilizing pipe 47 and the discharge pipe 48.

[0051] By opening the first valve 38, the internal atmospheric pressure of the second piston cylinder 35 can be balanced with the external atmospheric pressure. At this time, the second piston rod 36 can be manually controlled or the rectangular plate 44 can be pushed to make the second piston rod 36 slide outward of the second piston cylinder 35, so that the rectangular plate 44 returns to its original position, making it convenient for the container 4 to extract the disinfectant after the next cleaning. At the same time, opening the second valve 49 on the pressure stabilizing pipe 47 and the discharge pipe 48 allows the disinfectant in the container 4 to flow out through the discharge pipe 48. At this time, the disinfectant can be collected at the discharge pipe 48 and then processed for later disinfection.

[0052] Example 3

[0053] Reference Figure 1 , Figure 9 and Figure 10 Furthermore, based on Embodiment 1, a door 11 is rotatably connected to the box body 1, and a locking mechanism for controlling the opening and closing of the door 11 is provided on the receiving box 4. The locking mechanism includes a U-shaped stop bar 51, a slide block 5 is fixedly connected to the side wall of the receiving box 4, the U-shaped stop bar 51 is slidably connected in the slide block 5, a vertical plate 54 is fixedly connected to the side of the U-shaped stop bar 51 away from the door 11, a second telescopic rod 52 is fixedly connected between the vertical plate 54 and the slide block 5, a spring 53 is sleeved on the second telescopic rod 52, and the two ends of the spring 53 are fixedly connected to the slide block 5 and the vertical plate 54 respectively. The rectangular plate 44 intermittently abuts against the U-shaped stop bar 51.

[0054] By setting the door 11, the chamber 1 is sealed, preventing disinfectant from splashing out of the chamber 1 when cleaning biological experimental instruments. Simultaneously, because the chamber 1 is sealed, the high-temperature steam inlet pipe 19 introduces high-temperature steam into the chamber 1, increasing the pressure inside and effectively killing microorganisms on the biological experimental instruments. After the receiving chamber 4 extracts the disinfectant from the cylinder 16, the rectangular plate 44 inside the receiving chamber 4 slides outwards. When the disinfectant in the cylinder 16 is about to be completely extracted, the rectangular plate 44 contacts the U-shaped stop bar 51 and pushes it. At this time, the U-shaped stop bar 51... After being pushed, it slides away from the door 11. At this time, the U-shaped stop bar 51 no longer blocks the door 11, and the door 11 can be opened. This avoids the door 11 being opened before the disinfectant is drained, which could cause infection to the user. After the door 11 is opened, the cleaned biological experimental instruments can be taken out, and then the biological experimental instruments to be cleaned can be placed. New disinfectant is added to the cylinder 16. Then the height of the placement basket 12 is adjusted and the door 11 is closed. Then the first valve 38 is opened to reset the rectangular plate 44, and the first valve 38 and the second valve 49 are closed at the same time to clean the biological experimental instruments in the placement basket 12.

[0055] Working Principle: This molecular biology experimental instrument disinfection device, when in use, is designed with a housing 1 to place the biological experimental instruments to be cleaned, isolating any potentially harmful residues from the outside environment. By controlling the placement basket 12 to slide vertically downwards within the housing 1, a certain gap is created between the placement basket 12 and the scrubbing mechanism, allowing the biological experimental instruments to be placed into the placement basket 12. After the biological experimental instruments are placed, the placement basket 12 is raised, allowing the scrubbing mechanism to contact the biological experimental instruments within the placement basket 12. The drive unit is activated to start the scrubbing mechanism to clean the biological experimental instruments within the placement basket 12. Simultaneously, the drive unit controls the cylinder 16 to slide vertically back and forth within the housing 1, allowing the disinfectant solution inside the cylinder 16 to be sprayed upwards onto the biological experimental instruments through the through holes on the circular plate 15 at the bottom of the placement basket 12. This ensures that the biological experimental instruments are in full contact with the disinfectant solution while also being rinsed by the disinfectant solution. Combined with the scrubbing mechanism, this results in a better cleaning effect for the biological experimental instruments.

[0056] When the motor 2 is started, the drive shaft 21 rotates. At this time, the sun gear 22, which is fixedly connected to the bottom of the drive shaft 21, rotates. The sun gear 22 then drives the planetary gear 23, which meshes with it, to rotate. Since the planetary gear 23 meshes with the gear ring 24, and the gear ring 24 is fixedly connected to the inside of the housing 1, the planetary gear 23 can roll inside the gear ring 24. At this time, the stirring rod 25, which is fixedly connected to the bottom of the planetary gear 23, can rotate on its own axis and revolve around the drive shaft 21 as the center. At this time, the multiple stirring rods 25 can stir the disinfectant and biological experimental instruments in the placement basket 12, so that the biological experimental instruments are in full contact with the disinfectant. At the same time, the biological experimental instruments are stirred by the stirring rods 25 and roll in the placement basket 12. When the biological experimental instruments roll in the placement basket 12, the biological experimental instruments can be rinsed by the disinfectant in all directions, which increases the cleaning and disinfection effect of the biological experimental instruments.

[0057] When the stirring rod 25 rotates, the cleaning brush 26 fixedly connected to the bottom of the stirring rod 25 rotates synchronously. At this time, the cleaning brush 26 can scrub the biological experimental instruments in the basket 12, so that DNA or RNA residues that are not easily washed away by disinfectant are brushed off. At the same time, the biological experimental instruments are constantly turned over by the stirring rod 25, so that the cleaning brush 26 can scrub the biological experimental instruments in all directions, so that DNA or RNA residues on the biological experimental instruments are scrubbed in all directions.

[0058] Because the housing 1 has grooves that fit the two mounting plates 13, the placement basket 12, which is fixedly connected to the mounting plates 13, can slide vertically in the housing 1 without rotating. This ensures the cleaning effect of the cleaning brush 26 on the biological experimental instruments in the placement basket 12. By controlling the synchronous rotation of the two electric screws 14, the two mounting plates 13 can slide vertically in the axial direction on the electric screws 14. This allows the placement basket 12, which is fixedly connected to the mounting plates 13, to slide vertically back and forth in the axial direction. This allows the distance between the placement basket 12 and the cleaning brush 26 to be adjusted, making it easier to place the biological experimental instruments in the placement basket 12. At the same time, because the vertical position of the placement basket 12 is controllable, the distance between the placement basket 12 and the cleaning brush 26 can be controlled according to the size of the biological experimental instruments, so that it can adapt to cleaning biological experimental instruments of different sizes.

[0059] Multiple stirring rods 25 pass through the ring 27 and can rotate relative to the ring 27, thus their rotation is not interfered with. Simultaneously, since the multiple stirring rods 25 revolve around the drive shaft 21, and the ring 27 and the drive shaft 21 are on the same axis, the multiple stirring rods 25 can drive the ring 27 to rotate at the bottom of the toothed ring 24. Because the cylinder 16 slides vertically within the housing 1 and is restricted from rotating, the ring 27 rotates relative to the cylinder 16. At this time, the slider 18 on the mounting handle 17 fixedly connected to the upper end face of the cylinder 16 can rotate relative to the side wall of the ring 27. The chute 28 slides relative to each other. Since the shape of the chute 28 is a ring-shaped wave connected end to end, the vertical position of the slider 18 can change up and down when the ring 27 rotates. This causes the cylinder 16 to slide vertically back and forth inside the box 1. Since the outer wall of the basket 12 is in contact with the inner wall of the cylinder 16, the pressure between the cylinder 16 and the basket 12 can change between positive and negative pressure when the cylinder 16 slides vertically back and forth relative to the basket 12. This allows the disinfectant in the cylinder 16 to be sprayed upward through the through hole on the circular plate 15 to the biological experimental instrument for rinsing.

[0060] At least two sets of first piston cylinders 3 and corresponding first piston rods 31 are provided. By providing two or more sets of first piston cylinders 3 and first piston rods 31, the cylinder 16 will not rotate. Since the first piston cylinder 3 is fixedly connected to the housing 1, and the first piston rod 31 is fixedly connected to the cylinder 16 and slidably connected to the first piston cylinder 3, the movement trajectory of the cylinder 16 is restricted to vertical reciprocating sliding. This prevents the cylinder 16 from rotating synchronously with the ring 27, allowing the slider 18 to slide in the groove 28, thus ensuring the stable vertical lifting and lowering of the cylinder 16.

[0061] The bracket 401 secures the second piston cylinder 35. When the cylinder 16 slides vertically back and forth within the housing 1, the first piston rod 31, fixedly connected to the bottom of the cylinder 16, can slide back and forth within the first piston cylinder 3. At this time, the pressure within the first piston cylinder 3 alternates between positive and negative. One-way valves 34 are installed on both the exhaust pipe 32 and the suction pipe 33 of the first piston cylinder 3. Thus, the first piston cylinder 3 can gradually extract air from the second piston cylinder 35 through the suction pipe 33. The air extracted from the second piston cylinder 35 into the first piston cylinder 3 is finally discharged through the exhaust pipe. When the trachea 32 is discharged, the second piston rod 36 gradually slides into the second piston cylinder 35, and then the second piston rod 36 pulls the rectangular plate 44. Since the second piston rod 36 and the rectangular plate 44 are elastically connected, and the rectangular plate 44 is in contact with the inner wall of the container 4, when the pressure in the container 4 does not change, the position between the rectangular plate 44 and the container 4 will only change slightly or not at all. At this time, a negative pressure will be generated in the space between the rectangular plate 44 and the container 4. The generation of this negative pressure has a tendency to draw out the disinfectant in the cylinder 16.

[0062] With the solenoid valve 42 closed, when the second piston rod 36 slides into the second piston cylinder 35, the first telescopic rod 45 is stretched, and the tension spring 46 is stretched, so that the tension spring 46 has a tendency to pull the rectangular plate 44. As the second piston rod 36 continues to slide into the second piston cylinder 35, the second piston rod 36 can eventually contact the pressure-sensitive switch 43 in the second piston cylinder 35 and squeeze it. At this time, the solenoid valve 42 controlled by the pressure-sensitive switch 43 opens, and the negative pressure in the container 4 is released. At this time, the container 4 can extract the disinfectant in the cylinder 16 into the container 4 through the extraction tube 41 for storage, avoiding the disinfectant from overflowing and causing infection. The second piston rod 36 has sufficient length, so that the cylinder 16 can rise and fall a sufficient number of times to rinse the biological experimental instruments in the placement basket 12.

[0063] By opening the first valve 38, the internal atmospheric pressure of the second piston cylinder 35 can be balanced with the external atmospheric pressure. At this time, the second piston rod 36 can be manually controlled or the rectangular plate 44 can be pushed to make the second piston rod 36 slide outward of the second piston cylinder 35, so that the rectangular plate 44 returns to its original position, making it convenient for the container 4 to extract the disinfectant after the next cleaning. At the same time, opening the second valve 49 on the pressure stabilizing pipe 47 and the discharge pipe 48 allows the disinfectant in the container 4 to flow out through the discharge pipe 48. At this time, the disinfectant can be collected at the discharge pipe 48 and then processed for later disinfection.

[0064] The enclosure 1 is sealed by the door 11, preventing disinfectant from splashing out of the enclosure 1 when cleaning biological experimental equipment. After the container 4 extracts the disinfectant from the cylinder 16, the rectangular plate 44 inside the container 4 slides outward. When the disinfectant in the cylinder 16 is about to be completely extracted, the rectangular plate 44 contacts the U-shaped stop bar 51 and pushes the U-shaped stop bar 51. At this time, the U-shaped stop bar 51 slides away from the door 11 after being pushed, and the U-shaped stop bar 51 no longer pushes against the door 11. The obstruction allows the door 11 to be opened, preventing infection of the user if the disinfectant solution is not drained. After the door 11 is opened, the cleaned biological experimental instruments can be taken out, and then the biological experimental instruments to be cleaned can be placed in the cylinder 16. New disinfectant solution is added to the cylinder 16, and then the height of the placement basket 12 is adjusted and the door 11 is closed. Then the first valve 38 is opened to reset the rectangular plate 44, and the first valve 38 and the second valve 49 are closed at the same time to clean the biological experimental instruments in the placement basket 12.

[0065] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sterilization device for molecular biology experimental instruments, comprising a housing (1), characterized in that: A high-temperature steam inlet pipe (19) is fixedly connected to the top of the box (1). A placement basket (12) for placing biological experimental instruments is vertically slidably connected to the box (1). A cylinder (16) for holding disinfectant is vertically slidably connected to the bottom of the placement basket (12) inside the box (1). The outer wall of the placement basket (12) is in contact with the inner wall of the cylinder (16). A circular plate (15) is fixedly connected to the bottom of the placement basket (12). Multiple through holes are opened on the circular plate (15). A brushing mechanism for brushing the biological experimental instruments in the placement basket (12) is provided inside the box (1). A driving part for driving the brushing mechanism is provided at the top of the box (1). The cylinder (16) slides vertically back and forth inside the box (1) under the control of the driving part. The drive unit includes a motor (2), the output end of which is fixedly connected to a drive shaft (21). The drive shaft (21) passes through the top wall of the housing (1) and is fixedly connected to a sun gear (22). A gear ring (24) is fixedly connected inside the housing (1). A planetary gear (23) is provided between the gear ring (24) and the sun gear (22). The planetary gear (23) meshes with the sun gear (22) and the gear ring (24). A stirring rod (25) is fixedly connected to the lower surface of both the planetary gear (23) and the sun gear (22). The lower surface of the toothed ring (24) is rotatably connected to a circular ring (27). The circular ring (27) has multiple through holes adapted to multiple stirring rods (25). The upper end face of the cylinder (16) is symmetrically and fixedly connected to two mounting handles (17). The top of each of the two mounting handles (17) is fixedly connected to a slider (18). The side wall of the circular ring (27) has an annular wave-shaped groove (28) connected end to end. The slider (18) is slidably connected in the groove (28). Two symmetrically arranged first piston cylinders (3) are fixedly connected to the bottom wall of the box (1), and two symmetrically arranged first piston rods (31) are fixedly connected to the lower surface of the cylinder (16). The two first piston rods (31) are slidably connected to the two first piston cylinders (3). The outer wall of the box (1) is provided with a extraction mechanism for extracting disinfectant from the cylinder (16). The extraction mechanism includes a container (4), a bracket (401) is fixedly connected to the container (4), a second piston cylinder (35) is fixedly connected to the bracket (401), a second piston rod (36) is slidably connected inside the second piston cylinder (35), and a rectangular plate (44) is elastically connected to one end of the second piston rod (36) away from the second piston cylinder (35). The rectangular plate (44) is slidably connected inside the container (4), and the rectangular plate (44) is in contact with the inner wall of the container (4). A suction pipe (33) and an exhaust pipe (32) are fixedly connected to the side wall of the first piston cylinder (3). Both the suction pipe (33) and the exhaust pipe (32) are equipped with a one-way valve (34). The end of the suction pipe (33) away from the first piston cylinder (3) passes through the side wall of the box (1) and is connected to the second piston cylinder (35). A first telescopic rod (45) is fixedly connected between the second piston rod (36) and the rectangular plate (44). A tension spring (46) is sleeved on the first telescopic rod (45). The two ends of the tension spring (46) are fixedly connected to the rectangular plate (44) and the first telescopic rod (45) respectively. An extraction tube (41) is fixedly connected between the container (4) and the cylinder (16). An electromagnetic valve (42) is provided on the extraction tube (41). A pressure-sensitive switch (43) for controlling the electromagnetic valve (42) is provided inside the second piston cylinder (35). The second piston rod (36) intermittently abuts against the pressure-sensitive switch (43). The second piston cylinder (35) is fixedly connected to a pressure relief pipe (37), and the pressure relief pipe (37) is provided with a first valve (38). The top wall of the container (4) is fixedly connected to a pressure stabilizing pipe (47), and the side wall of the container (4) is fixedly connected to a discharge pipe (48). The pressure stabilizing pipe (47) and the discharge pipe (48) are both provided with a second valve (49).

2. The sterilization device for molecular biology experimental instruments according to claim 1, characterized in that: The washing mechanism includes multiple washing brushes (26), which are fixedly connected to the bottom of multiple stirring rods (25).

3. The sterilization device for molecular biology experimental instruments according to claim 1, characterized in that: The placement basket (12) is symmetrically fixedly connected to two mounting plates (13) on both sides. The side wall of the box (1) is provided with grooves that cooperate with the two mounting plates (13). The bottom wall of the box (1) is rotatably connected to two symmetrically arranged electric screws (14). The middle of the two mounting plates (13) is provided with threaded holes that cooperate with the two electric screws (14).

4. The sterilization device for molecular biology experimental instruments according to claim 1, characterized in that: The box body (1) is rotatably connected to a door (11). The container box (4) is provided with a locking mechanism for controlling the opening and closing of the door (11). The locking mechanism includes a U-shaped stop bar (51). A slide block (5) is fixedly connected to the side wall of the container box (4). The U-shaped stop bar (51) is slidably connected in the slide block (5). A vertical plate (54) is fixedly connected to the side of the U-shaped stop bar (51) away from the door (11). A second telescopic rod (52) is fixedly connected between the vertical plate (54) and the slide block (5). A spring (53) is sleeved on the second telescopic rod (52). The two ends of the spring (53) are fixedly connected to the slide block (5) and the vertical plate (54) respectively. The rectangular plate (44) intermittently abuts against the U-shaped stop bar (51).

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