Laboratory glass instrument disinfection device

Abstract

The invention relates to the technical field of glass instrument disinfection devices, in particular to a laboratory glass instrument disinfection device which comprises a heat preservation barrel, a sealing cover is detachably installed at the upper end of the heat preservation barrel, a pressure relief barrel is fixedly installed at the bottom end of the sealing cover, an annular pipe is installed on the outer surface of the pressure relief barrel, and a spray pipe is fixedly connected to the upper end of the annular pipe. An uncovering pressure relief device for preventing sudden leakage of steam is arranged in the pressure protection and relief cylinder, an instrument stabilizing device for supporting the glassware is arranged in the spray pipe, high-temperature and high-pressure steam is sprayed out through a spray head to clean the interior of the glassware, and then the interior of the glassware is sterilized at a high temperature; steam injection avoids physical friction, abrasion and scratch to the inner surface of the glass instrument are reduced, the opening of the instrument faces downwards, the steam is condensed into high-temperature water drops, the high-temperature water drops fall off and spray the outer surface of the instrument below, at the moment, cleaning of the outer surface of the instrument is completed, and the overall cleaning efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of glass instrument sterilizing devices, in particular to a laboratory glass instrument sterilizing device. Background Art

[0002] Glass instruments are widely used in the chemical, pharmaceutical, laboratory and food industries. Especially in experimental operations and production processes, the cleaning and disinfection of glass instruments are important links to ensure the accuracy of experimental results and product quality. Traditional glass instrument cleaning methods mostly use manual washing, ultrasonic cleaning or chemical solvent washing, and then use high temperature, steam or ultraviolet light for disinfection after cleaning. However, these methods have many shortcomings.

[0003] After searching, it was found that the prior art announcement number is CN 220293874 U, which discloses a rotary disinfection device for laboratory glass instruments, including a disinfection box, wherein the inner bottom wall of the disinfection box is fixedly inlaid with two electric telescopic rods, the top ends of the two electric telescopic rods are commonly fixedly connected to a cleaning pool, a cleaning and disinfection frame is provided inside the cleaning pool, a sealed bearing is fixedly inlaid on the bottom surface of the disinfection box, a servo motor is fixedly connected to the upper surface of the disinfection box, and a rotating shaft is fixedly connected to the output end of the servo motor. The scheme can clamp and place the glass instruments through the cleaning pool, cleaning and disinfection frame, placement rack, rotating shaft and servo motor, and the cleaning and disinfection frame and the placement rack are driven to rotate inside the cleaning pool by the servo motor, so as to realize the rotary cleaning and disinfection of the glass instruments, and the aeration pump, aeration pipe and aeration head are provided to aerate and clean the glass instruments.

[0004] Therefore, based on the above search and in combination with the existing technology, after the existing disinfection cabinet disinfects the glass instruments, the internal pressure is greater than the external pressure due to the high-temperature disinfection inside the disinfection cabinet. Then, at the moment the cabinet door is opened, the internal pressure will be balanced with the external pressure, causing the internal high-temperature gas or high-temperature steam to pour out. If the operator does not take certain protective measures during the opening process, he will be at risk of scalding and will have to wait for a long time for the cabinet door to cool down before opening it. The practicality is not strong. For this reason, we propose a laboratory glass instrument disinfection device. Summary of the invention

[0005] The object of the present invention is to provide a laboratory glass instrument disinfection device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a laboratory glass instrument disinfection device, comprising a heat preservation barrel, a sealing cover is detachably installed on the upper end of the heat preservation barrel, a handle for easy grasping is rotatably installed on the upper end of the sealing cover, a pressure relief cylinder is fixedly installed on the bottom end of the sealing cover, a plurality of ring tubes are fixedly installed on the outer surface of the pressure relief cylinder, a plurality of nozzles capable of spraying high-temperature steam are fixedly connected to the upper ends of the ring tubes, a steam jet pump is arranged on the right side of the heat preservation barrel, a connector is fixedly installed on the inner bottom end of the heat preservation barrel, an air pipe is fixedly connected to the output end of the steam jet pump, and the output end of the air pipe is fixedly connected to the connector, a connecting nozzle is fixedly connected to the outer surface of the ring tube close to the connector, and the connecting nozzle corresponds to the connector, a plurality of pressure relief holes for pressure relief are opened on the outer surface of the pressure relief cylinder, the high-pressure steam inside the heat preservation barrel enters the pressure relief cylinder through the pressure relief holes, a cover-opening pressure relief device for preventing sudden leakage of steam is arranged in the pressure relief cylinder, and an instrument stabilizing device for supporting the glass instrument is arranged inside the nozzle.

[0007] As a further solution of the present invention, the instrument stabilizing device includes a stress ring, which is slidably installed on the inner upper end of the nozzle, and the stress ring is connected to the nozzle by a reset spring. A plurality of rectangular holes are provided on the outer surface of the nozzle, and expansion leaves are rotatably installed in the rectangular holes. When the expansion leaves rotate in a direction away from each other, the inner surface of the glass instrument is supported.

[0008] As a further solution of the present invention, a plurality of racks are fixedly mounted on the bottom end of the force ring, the racks correspond to the expansion leaves, a passive gear is fixedly mounted on the rotational connection between the expansion leaves and the nozzle, and the passive gear meshes with the racks.

[0009] As a further solution of the present invention, a negative pressure cylinder is fixedly connected to one end of the nozzle close to the pressure relief cylinder, a plurality of through holes are opened on the outer surface of the pressure relief cylinder, the negative pressure cylinder is inserted into the through holes, and a piston is slidably installed inside the negative pressure cylinder.

[0010] As a further solution of the present invention, a clamping block is fixedly connected to one end of the piston close to the nozzle, a stabilizing tube is fixedly installed at the bottom end of the force ring, the stabilizing tube is located inside the nozzle, and the bottom end of the stabilizing tube corresponds to the clamping block, two triangular blocks are slidably installed inside the clamping block, the triangular blocks and the clamping block are connected by a resistance spring, and when the clamping block moves toward the stabilizing tube, it then clamps the outer surface of the stabilizing tube.

[0011] As a further solution of the present invention, a counterweight rod is slidably installed on the inner end of the stabilizing tube, an expansion rod is fixedly installed on the bottom end of the counterweight rod, and two strip holes are opened on the outer surface of the stabilizing tube, and expansion bars are arranged in each of the strip holes.

[0012] As a further solution of the present invention, the expansion strips are respectively located on the left and right sides of the expansion rod, and a force plate is fixedly installed at one end of the expansion strip close to the expansion rod. A force block is fixedly installed at the inner end of the stabilizing tube, and the force block is clamped in the spiral groove.

[0013] As a further solution of the present invention, the cover opening pressure relief device includes a connecting rod, which is fixedly installed at the bottom end of the handle, and a stabilizing plate is fixedly installed at the inner end of the pressure relief cylinder. The stabilizing plate is located below the connecting rod, and a movable plate is arranged above the stabilizing plate, and the movable plate is slidably connected to the inner wall of the nozzle pressure relief cylinder.

[0014] As a further solution of the present invention, a plurality of conducting plugs are fixedly installed on the upper end of the stabilizing plate, a plurality of holes are opened on the upper end of the movable plate, the holes correspond to the conducting plugs respectively, and the connecting rod is passed through the interior of the central tube, a resistance block is fixedly installed on the upper end of the movable plate, a ratchet is fixedly installed on the outer surface of the connecting rod, and the resistance block is clamped at the trough of the ratchet.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is in use, when the handle is turned, the high-temperature and high-pressure steam inside the insulation barrel is balanced by the low-pressure environment inside the pressure relief cylinder, so as to avoid the high-temperature steam inside the insulation barrel from overflowing when the sealing cover is opened, causing burns to the operator, thereby effectively reducing the risk of steam splashing and ensuring the safety of the operator; 2. When the present invention is working, the inside of the glass instrument is cleaned by spraying high-temperature and high-pressure steam from the nozzle, thereby sterilizing the inside of the glass instrument at high temperature. Compared with traditional brushing, steam spraying avoids physical friction, reduces wear and scratches on the inner surface of the glass instrument, and the instrument mouth is facing downward, so the steam condenses into high-temperature water droplets and falls, and sprinkles the outer surface of the instrument below, thereby completing the cleaning of the outer surface of the instrument and improving the overall cleaning efficiency; 3. When the present invention is in use, the rotation of the expansion blades and the fixation of the inside of the instrument ensure that the instrument remains stable during the jet cleaning process, preventing the instrument from sliding, tipping over or shifting due to the impact of high-pressure steam or water flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a laboratory glass instrument disinfection device; Figure 2 It is a schematic diagram of the internal structure of a laboratory glass instrument disinfection device; Figure 3 It is a schematic diagram of the structure of the outside of the pressure relief cylinder; Figure 4 It is a schematic diagram of the structure inside the pressure relief cylinder; Figure 5 It is a schematic diagram of the structure inside the nozzle; Figure 6 It is the structural diagram of the ring pipe; Figure 7 It is a structural schematic diagram of the piston; Figure 8 It is a schematic diagram of the structure inside the stabilizing tube; Fig. 9 It is a structural schematic diagram of the movable plate; Fig.10 It is a structural schematic diagram of the card connection block.

[0017] In the figure: 1. Insulated bucket; 2. Sealing cover; 3. Handle; 4. Air pipe; 5. Steam jet pump; 11. Pressure relief valve; 41. Connector; 101, annular tube; 102, pressure relief cylinder; 103, central tube; 104, transmission tube; 105, connection nozzle; 106, clamping block; 107, pressure relief hole; 108, connecting rod; 109, ratchet; 201, nozzle; 202, force ring; 203, expansion blade; 204, rack; 205, return spring; 206, stabilizing tube; 207, clamping block; 208, piston; 209, passive gear; 210, unlocking block; 211, triangular block; 212, resistance spring; 213, negative pressure cylinder; 301, movable plate; 302, stabilizing plate; 303, conducting plug; 304, resistance block; 401, counterweight rod; 402, spiral groove; 403, expansion rod; 404, force plate; 405, expansion strip; 406, force block. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figures 1 to 3A laboratory glass instrument disinfection device comprises an insulation barrel 1, a sealing cover 2 is detachably mounted on the upper end of the insulation barrel 1, a sealing rubber ring is fixedly mounted on the outer surface of the sealing cover 2, and is tightly fitted with the inner end of the insulation barrel 1 to increase the airtightness between the insulation barrel 1 and the sealing cover 2, a handle 3 for easy grasping is rotatably mounted on the upper end of the sealing cover 2, and a pressure relief valve 11 is arranged above the sealing cover 2 to prevent the risk of explosion caused by excessive internal pressure of the insulation barrel 1, a pressure relief cylinder 102 is fixedly mounted on the bottom end of the sealing cover 2, and a plurality of annular tubes 101 are fixedly mounted on the outer surface of the pressure relief cylinder 102 through a clamp, two adjacent annular tubes 101 are connected by a transmission tube 104, and the upper and lower ends of the annular tubes 101 are connected by a transmission tube 104. The ends are fixedly connected with a plurality of nozzles 201 capable of spraying high-temperature steam. A steam jet pump 5 is arranged on the right side of the heat preservation barrel 1. The steam jet pump 5 is an existing mature technology and will not be described in detail here. A connector 41 is fixedly installed on the inner bottom end of the heat preservation barrel 1. The output end of the steam jet pump 5 is fixedly connected with an air pipe 4, and the output end of the air pipe 4 is fixedly connected with the connector 41. Specifically, an air hole is fixedly installed on the outer surface of the heat preservation barrel 1. The air pipe 4 is penetrated in the air hole. A connecting nozzle 105 is fixedly connected to the outer surface of the ring tube 101 close to the connector 41. The connecting nozzle 105 corresponds to the connector 41. When the ring tube 101 moves downward to the lowest point, the connecting nozzle 105 is connected to the connector 41. See also Figure 2 , 3 4. The outer surface of the pressure relief cylinder 102 is provided with a plurality of pressure relief holes 107 for pressure relief. The high-pressure steam inside the heat preservation barrel 1 enters the pressure relief cylinder 102 through the pressure relief holes 107. The pressure relief cylinder 102 is provided with a cover-opening pressure relief device to prevent the sudden leakage of steam. Specifically, when the handle 3 is turned, the high-temperature and high-pressure steam inside the heat preservation barrel 1 can be sucked into the pressure relief cylinder 102 through the cover-opening pressure relief device to prevent the operator from being scalded by the steam. The nozzle 201 is provided with an instrument stabilizing device for supporting the glass instrument. Specifically, the instrument stabilizing device can stabilize the glass instrument outside the nozzle 201 to prevent the glass instrument from being pushed out by the sputtering thrust of the high-pressure steam; See also Figure 4 , 5 6. The instrument stabilizing device includes a stress ring 202, which is slidably mounted on the inner upper end of the nozzle 201. A heat-resistant rubber sleeve is fixedly mounted on the upper end of the stress ring 202 to prevent scratches or breakage of the instrument caused by hard contact with the glass instrument, and further protect the glass instrument. The stress ring 202 is connected to the nozzle 201 through a reset spring 205. The outer surface area of ​​the nozzle 201 is provided with a plurality of rectangular holes, and expansion leaves 203 are rotatably mounted in the rectangular holes. When the expansion leaves 203 rotate in a direction away from each other, the inner surface of the glass instrument is supported to prevent the glass instrument from shaking violently during the steam sputtering process. A heat-resistant rubber sleeve is fixedly mounted on the outer surface of the expansion leaves 203 to prevent damage to the glass instrument. A plurality of racks 204 are fixedly installed at the bottom end of the force ring 202, and the racks 204 correspond to the expansion leaves 203. A passive gear 209 is fixedly installed at the rotation connection between the expansion leaves 203 and the nozzle 201, and the passive gear 209 meshes with the rack 204. When the glass instrument is placed upside down on the upper end of the force ring 202, and the force ring 202 and the rack 204 are pressed downward under the action of gravity, the passive gear 209 starts to rotate under the meshing action of the rack 204. The heavier the instrument is, the greater the force of the expansion leaves 203 to rotate, thereby clamping the glass instrument from the inside. See also Figure 4 , 5 7. One end of the nozzle 201 close to the pressure relief cylinder 102 is fixedly connected with a negative pressure cylinder 213. The outer surface of the pressure relief cylinder 102 is provided with a plurality of through holes, and the negative pressure cylinder 213 is inserted into the through holes. Specifically, a sealing ring is fixedly installed on the outer surface of the negative pressure cylinder 213, and the sealing ring fits tightly between the through holes to prevent the pressure relief cylinder 102 from releasing pressure. A piston 208 is slidably installed inside the negative pressure cylinder 213, and the outer surface of the piston 208 is wrapped by a high temperature resistant rubber sleeve and fits tightly with the inner surface of the negative pressure cylinder 213. The end of the piston 208 close to the nozzle 201 is fixedly connected with a block 207, and the bottom end of the force ring 202 is fixedly installed with a stabilizing tube 206, which is located inside the nozzle 201, and the bottom end of the stabilizing tube 206 corresponds to the block 207. When high-pressure steam is ejected through the nozzle 201, the piston 208 moves toward the nozzle 201 due to the effect that the greater the gas flow rate, the smaller the pressure. During the movement, the air inside the pressure relief cylinder 102 is extracted. Then, the pistons 208 inside multiple negative pressure cylinders 213 on the outer surface of the pressure relief cylinder 102 move simultaneously, thereby reducing the pressure inside the pressure relief cylinder 102.

[0020] Example 2: Please refer to Figure 5 , 7 , a laboratory glass instrument disinfection device, based on the embodiment 1, two triangular blocks 211 are slidably installed inside the clamping block 207, and the triangular block 211 and the clamping block 207 are connected by a resistance spring 212. When the clamping block 207 moves toward the stabilizing tube 206, the outer surface of the stabilizing tube 206 is then clamped. Specifically, when the clamping block 207 moves to the stabilizing tube 206, the outer surface of the stabilizing tube 206 and the slope of the triangular block 211 are squeezed against each other, and then the stabilizing tube 206 is clamped between the two triangular blocks 211 and the clamping block 207, so as to fix the position of the piston 208 after the movement; like Figure 5 , 8The inner end of the stabilizing tube 206 is slidably mounted with a counterweight rod 401, and the bottom end of the counterweight rod 401 is fixedly mounted with an expansion rod 403. The outer surface of the stabilizing tube 206 is provided with two strip holes, and expansion bars 405 are arranged in the strip holes, and the expansion bars 405 are respectively located on the left and right sides of the expansion bar 403. The expansion bars 405 are fixedly mounted with a force plate 404 at one end close to the expansion bar 403, and a certain angle is formed between the force plate 404 and the expansion bar 405, and the force plate 404 and the expansion bar 405 are connected by a spring. Specifically, the nozzle 201 A stabilizing frame is fixedly installed at the inner bottom end, and the stabilizing frame is sleeved on the outer surface of the stabilizing tube 206. A spiral groove 402 is opened on the outer surface of the expansion rod 403. A force block 406 is fixedly installed at the inner end of the stabilizing tube 206. The force block 406 is clamped in the spiral groove 402. When the counterweight rod 401 rotates, the spiral groove 402 then moves the counterweight rod 401 and the expansion rod 403 downward under the restriction of the force block 406. When the expansion rod 403 moves downward, it squeezes the force plate 404 toward both sides, and the expansion bar 405 is firmly clamped in the stabilizing frame; The upper end of the counterweight rod 401 is fixedly mounted with an unlocking block 210, and the outer surface of the unlocking block 210 is fixedly mounted with a heat-resistant rubber pad to prevent hard contact with glass instruments and damage to the glass; like Figure 4 , 9 As shown in 10, the cover opening pressure relief device includes a connecting rod 108, which is fixedly installed at the bottom end of the handle 3, and a stabilizing plate 302 is fixedly installed at the inner end of the pressure relief cylinder 102, and the stabilizing plate 302 is located below the connecting rod 108. A movable plate 301 is arranged above the stabilizing plate 302, and the movable plate 301 is slidably connected to the inner wall of the pressure relief cylinder 102 of the nozzle 201. A sealing rubber ring is fixedly installed at the connection between the movable plate 301 and the pressure relief cylinder 102 to increase the air tightness between the movable plate 301 and the pressure relief cylinder 102. The movable plate 301 and the stabilizing plate 302 are connected by a high-strength spring (not shown in the figure), and a plurality of conducting plugs 303 are fixedly installed at the upper end of the stabilizing plate 302. A plurality of holes are opened at the upper end of the movable plate 301, and the holes correspond to the conducting plugs 303 respectively, and the connecting rod 108 is penetrated inside the center tube 103. Specifically, the upper end of the conducting plug 303 is flush with the upper end of the movable plate 301. More specifically, the outer surface of the conducting plug 303 is provided with an air hole, and the air hole is below the movable plate 301. When the movable plate 301 moves downward, the air hole is exposed above the movable plate 301, so that the inside of the pressure relief cylinder 102 is connected with the internal chamber of the heat preservation barrel 1 through the conducting plug 303; A resistance block 304 is fixedly mounted on the upper end of the movable plate 301, and a ratchet 109 is fixedly mounted on the outer surface of the connecting rod 108. The resistance block 304 is clamped at the trough of the ratchet 109. When the ratchet 109 is driven to rotate by the handle 3, the resistance block 304 moves from the trough of the ratchet 109 to the crest under the squeezing force of the ratchet 109, thereby pushing the movable plate 301 to move downward. A slot is provided at the bottom end of the connecting rod 108, and the slot is in a "T" shape. A snap-in block 106 is fixedly installed at the inner end of the center tube 103, and the snap-in block 106 is snapped into the slot. When the connecting rod 108 is inserted into the center tube 103, it starts to rotate so that the snap-in block 106 is located in the upper groove of the slot.

[0021] The working principle of the present invention is: When in use, the experimental glass instruments that need to be sterilized are placed upside down on the nozzle 201 one by one. When the glass instruments are placed upside down on the upper end of the force ring 202, the force ring 202 and the rack 204 are pressed downward under the action of gravity. Then the passive gear 209 starts to rotate under the meshing action of the rack 204. The heavier the instrument, the greater the force of the expansion leaf 203 to rotate, thereby clamping the glass instrument from the inside. In this case, some instruments are lighter in weight. Before this, the force ring 202 is pressed downward to expand the expansion leaf 203 to the same length as the inner diameter of the instrument. Then the unlocking block 210 is rotated to drive the counterweight rod 401 to rotate. Then the spiral groove 402 moves the counterweight rod 401 and the expansion rod 403 downward under the restriction of the force block 406. Then the expansion rod 403 squeezes the force plate 404 toward both sides when moving downward. Then the expansion bar 405 is firmly stuck in the stabilizing frame, thereby achieving the stability of the current position of the expansion leaf 203. Then, the sealing cover 2 is lowered so that the sealing cover 2 and the heat preservation barrel 1 are completely overlapped, and then the handle 3 is rotated. At this time, the connecting rod 108 is inserted into the center tube 103, the clamping block 106 is located in the upper groove of the clamping groove, and the connecting nozzle 105 and the connector 41 are connected to each other. Then, the steam jet pump 5 is started, and the high-temperature and high-pressure steam is transmitted to the ring tube 101 through the air pipe 4, and then sprayed out through the nozzle 201 to achieve high-temperature flushing and disinfection of the inside of the instrument. Since the instrument port is facing downward, the steam condenses into high-temperature water droplets and falls, and pours the outer surface of the instrument below, and the cleaning of the outer surface of the instrument is completed at this time; Then, in the process of ejecting high-temperature steam, the piston 208 moves toward the nozzle 201, and the air inside the pressure relief cylinder 102 is extracted during the movement. Then, the pistons 208 inside the multiple negative pressure cylinders 213 on the outer surface of the pressure relief cylinder 102 move simultaneously, thereby reducing the pressure inside the pressure relief cylinder 102. After waiting for the disinfection to be completed, turn the handle 3, and the handle 3 drives the connecting rod 108 to rotate. At this time, the ratchet 109 squeezes the resistance block 304 to move the movable plate 301 downward, so that the air vents on the outer surface of the conductive plug 303 are exposed above the movable plate 301. At this time, the high-temperature and high-pressure gas inside the insulation barrel 1 is sucked in under the low-pressure environment inside the pressure relief cylinder 102. Then, when the operator lifts the sealing cover 2, the high-temperature gas inside the insulation barrel 1 will not be instantly sprayed out at the moment of opening the cover, causing skin damage, thereby avoiding the risk of burns.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed in the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A laboratory glass instrument disinfection device, comprising a heat preservation barrel (1), characterized in that: The upper end of the heat preservation barrel (1) is detachably mounted with a sealing cover (2), the upper end of the sealing cover (2) is rotatably mounted with a handle (3) for easy grasping, the lower end of the sealing cover (2) is fixedly mounted with a pressure relief cylinder (102), the outer surface of the pressure relief cylinder (102) is fixedly mounted with a plurality of annular tubes (101), the upper ends of the annular tubes (101) are fixedly connected with a plurality of nozzles (201) capable of spraying high-temperature steam, a steam jet pump (5) is arranged on the right side of the heat preservation barrel (1), a connector (41) is fixedly mounted on the inner bottom end of the heat preservation barrel (1), and the output end of the steam jet pump (5) is fixedly connected with an air pipe (4). The output end of the air pipe (4) is fixedly connected to the connector (41); a connecting nozzle (105) is fixedly connected to the outer surface of the ring tube (101) near the connector (41); the connecting nozzle (105) corresponds to the connector (41); a plurality of pressure relief holes (107) for pressure relief are provided on the outer surface of the pressure relief cylinder (102); the high-pressure steam inside the heat preservation barrel (1) enters the pressure relief cylinder (102) through the pressure relief holes (107); a cover-opening pressure relief device for preventing sudden leakage of steam is provided inside the pressure relief cylinder (102); and an instrument stabilizing device for supporting the glass instrument is provided inside the nozzle (201).

2. A laboratory glass instrument disinfection device according to claim 1, characterized in that: The instrument stabilizing device comprises a force ring (202), the force ring (202) being slidably mounted on the inner upper end of the nozzle (201), the force ring (202) being connected to the nozzle (201) via a return spring (205), a plurality of rectangular holes being provided on the outer surface of the nozzle (201), expansion leaves (203) being rotatably mounted in each of the rectangular holes, and the expansion leaves (203) supporting the inner surface of the glass instrument when rotating in a direction away from each other.

3. A laboratory glass instrument disinfection device according to claim 2, characterized in that: A plurality of racks (204) are fixedly mounted on the bottom end of the force ring (202), the racks (204) corresponding to the expansion leaves (203), a passive gear (209) is fixedly mounted on the rotational connection between the expansion leaves (203) and the nozzle (201), and the passive gear (209) meshes with the racks (204).

4. A laboratory glass instrument disinfection device according to claim 3, characterized in that: One end of the nozzle (201) close to the pressure relief cylinder (102) is fixedly connected to a negative pressure cylinder (213); a plurality of through holes are formed on the outer surface of the pressure relief cylinder (102); the negative pressure cylinder (213) is inserted into the through holes; and a piston (208) is slidably mounted inside the negative pressure cylinder (213).

5. A laboratory glass instrument disinfection device according to claim 4, characterized in that: A clamping block (207) is fixedly connected to one end of the piston (208) close to the nozzle (201); a stabilizing tube (206) is fixedly installed at the bottom end of the force ring (202); the stabilizing tube (206) is located inside the nozzle (201), and the bottom end of the stabilizing tube (206) corresponds to the clamping block (207); two triangular blocks (211) are slidably installed inside the clamping block (207); the triangular blocks (211) and the clamping block (207) are connected via a resistance spring (212); when the clamping block (207) moves toward the stabilizing tube (206), it clamps the outer surface of the stabilizing tube (206).

6. A laboratory glass instrument disinfection device according to claim 5, characterized in that: A counterweight rod (401) is slidably mounted on the inner end of the stabilizing tube (206), an expansion rod (403) is fixedly mounted on the bottom end of the counterweight rod (401), and two strip-shaped holes are provided on the outer surface of the stabilizing tube (206), and expansion bars (405) are arranged in each of the strip-shaped holes.

7. A laboratory glass instrument disinfection device according to claim 6, characterized in that: The expansion bars (405) are respectively located on the left and right sides of the expansion rod (403); a force-bearing plate (404) is fixedly installed at one end of the expansion bar (405) close to the expansion rod (403); a force-bearing block (406) is fixedly installed at the inner end of the stabilizing tube (206); and the force-bearing block (406) is clamped in the spiral groove (402).

8. A laboratory glass instrument disinfection device according to claim 1, characterized in that: The cover opening pressure relief device comprises a connecting rod (108), wherein the connecting rod (108) is fixedly mounted on the bottom end of the handle (3), a stabilizing plate (302) is fixedly mounted on the inner end of the pressure relief cylinder (102), the stabilizing plate (302) is located below the connecting rod (108), a movable plate (301) is arranged above the stabilizing plate (302), and the movable plate (301) is slidably connected to the inner wall of the nozzle (201) pressure relief cylinder (102).

9. A laboratory glass instrument disinfection device according to claim 8, characterized in that: A plurality of conducting plugs (303) are fixedly mounted on the upper end of the stabilizing plate (302), a plurality of holes are opened on the upper end of the movable plate (301), the holes respectively correspond to the conducting plugs (303), and the connecting rod (108) is passed through the interior of the central tube (103), a resistance block (304) is fixedly mounted on the upper end of the movable plate (301), a ratchet (109) is fixedly mounted on the outer surface of the connecting rod (108), and the resistance block (304) is clamped at the trough of the ratchet (109).

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