A chemical laboratory equipment cleaning device

Abstract

The present invention discloses a chemical laboratory equipment cleaning device, comprising a support cabinet, a cleaning box is fixedly installed on the top of the support cabinet, a liquid inlet pipe located below the cleaning box is penetrated and arranged on one side of the support cabinet, a liquid storage box is fixedly installed inside the support cabinet, a placement rack is fixedly installed inside the cleaning box, a rotating nozzle located below the placement rack is arranged on the other end of the liquid inlet pipe, a high-pressure air pump is fixedly installed on the top of the liquid storage box, an air guide pipe is fixedly installed at the air outlet of the high-pressure air pump, the other end of the air guide pipe is fixedly installed with the top of the liquid storage box, a liquid guide pipe is fixedly installed at the bottom of the liquid storage box, and the other end of the liquid guide pipe is penetrated and fixedly installed with the bottom of the cleaning box. This chemical laboratory equipment cleaning device achieves a good cleaning effect and solves the problem of poor cleaning effect of the existing device.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment cleaning, and in particular to an equipment cleaning device for chemical laboratories. Background Art

[0002] The chemical laboratory is a scientific research place that provides a good adjustment for chemical experiments. There are a large number of chemical laboratory equipment in the chemical laboratory, and a chemical laboratory equipment cleaning device is needed after the equipment is used.

[0003] The experimental equipment used in precision chemical experiments must be free of metal residues and must be soaked in a dilute nitric acid solution before use. The existing soaking tanks are heavy, and replacing the dilute nitric acid and cleaning are time-consuming and laborious.

[0004] However, the cleaning effect of the existing chemical laboratory equipment cleaning device is not good. The cleaning device cannot clean the inner and outer walls of the equipment well, which easily leads to residual impurities in the equipment, affecting the progress of chemical experiments and causing inaccurate chemical experiment results. Personnel need to clean again, which is time-consuming and labor-intensive. Summary of the invention

[0005] In view of the defects in the prior art, the present invention provides an equipment cleaning device for a chemical laboratory, comprising a supporting cabinet, a cleaning box is fixedly installed on the top of the supporting cabinet, a liquid inlet pipe located below the cleaning box is penetrated and arranged on one side of the supporting cabinet, a liquid storage box is fixedly installed inside the supporting cabinet, a placement rack is fixedly installed inside the cleaning box, a rotating nozzle located below the placement rack is arranged on the other end of the liquid inlet pipe, a high-pressure air pump is fixedly installed on the top of the liquid storage box, an air guide pipe is fixedly installed at the air outlet of the high-pressure air pump, the other end of the air guide pipe is fixedly installed with the top of the liquid storage box, a liquid guide pipe is fixedly installed on the bottom of the liquid storage box, the other end of the liquid guide pipe is penetrated and fixedly installed with the bottom of the cleaning box, a liquid drain pipe located on one side of the liquid guide pipe is fixedly installed on the bottom of the cleaning box, the bottom of the liquid drain pipe is fixedly installed with the top of the cleaning box, and a drain valve is arranged in the middle of the liquid drain pipe.

[0006] Preferably, a one-way valve is provided in the middle of the air duct, an air supply pipe is fixedly installed in the middle of the air duct, the connection between the air duct and the air supply pipe is located between the one-way valve and the liquid storage tank, an air intake duct is fixedly installed at the air intake end of the high-pressure air pump, the other end of the air intake duct is vertically downward, and an air supply valve is provided in the middle of the air supply pipe.

[0007] Preferably, a rotating bracket located inside the support cabinet is fixedly installed at the bottom of the cleaning tank. A follower gear located on one side of the rotating bracket is rotatably connected to the middle of the rotating bracket. A rotating groove is fixedly installed at the bottom of the rotating bracket. A drive shaft is rotatably connected to the middle of the rotating groove. A rotating gear located on one side of the rotating bracket is fixedly installed at one end of the drive shaft. The rotating gear meshes with the bottom of the follower gear.

[0008] Preferably, the other end of the air supply pipe is fixedly installed on the side surface of the rotating groove. An air inlet pipe is fixedly installed on the other side of the rotating groove. A rotating fan blade located inside the rotating groove is fixedly installed in the middle of the drive shaft. A sliding block is rotatably connected to one side of the follower gear. The rotating connection of the sliding block and the follower gear is close to the outer peripheral surface of the follower gear.

[0009] Preferably, rotating pipes located on the front and rear sides of the placement rack are rotatably connected inside the cleaning tank. An air spraying port is fixedly installed on the side of the rotating pipe facing the placement rack. One end of the rotating pipe penetrates through one side of the cleaning tank and is hermetically rotatably connected to the air inlet pipe. A reciprocating gear located inside the cleaning tank is fixedly installed on the rotating pipe.

[0010] Preferably, a connecting frame is slidably connected through the bottom of the cleaning tank. A rack is fixedly installed at the top of the connecting frame. The rack is slidably connected to the front and rear side walls inside the cleaning tank. The reciprocating gear meshes with the rack. The middle of the connecting frame is slidably connected through the middle of the sliding block.

[0011] Preferably, a drain port is provided at the bottom of the liquid storage tank. The air supply valve and the drain valve are electric control valves. The top of the liquid guide pipe is higher than the bottom inside the cleaning tank. Another one-way valve is provided on the liquid guide pipe below the cleaning tank. Another drain port is provided at the bottom of the side surface of the cleaning tank.

[0012] Preferably, the rotating groove is circular. The end of the rotating fan blade is in sliding contact with the inner arc surface of the rotating groove. The drive shaft is coaxially arranged with the rotating groove.

[0013] Preferably, the through sliding connection between the connecting frame and the bottom of the cleaning tank is a sealed sliding connection. The shape of the connecting frame is "凵"-shaped. The horizontal rod in the middle of the connecting frame is slidably connected through the middle of the sliding block.

[0014] Preferably, a heating pipe located below the rotating nozzle is fixedly installed at the bottom inside the cleaning tank. The bottom of the heating pipe is higher than the bottom inside the cleaning tank.

[0015] The beneficial effects of the present invention are embodied in:

[0016] 1. A chemical laboratory equipment cleaning device, by setting a liquid storage tank, placing dilute nitric acid for cleaning experimental equipment in the liquid storage tank, placing the experimental equipment to be cleaned on a placement rack, closing the air supply valve and the drain valve, starting the high-pressure air pump, and filling air into the liquid storage tank through the air guide pipe, so that the pressure inside the liquid storage tank increases. Under the action of pressure, the dilute nitric acid inside the liquid storage tank enters the cleaning box through the liquid guide pipe, so that the dilute nitric acid can soak the experimental equipment placed on the placement rack, and the experimental equipment is thoroughly cleaned by soaking.

[0017] 2. The chemical laboratory equipment cleaning device is provided with an air supply pipe. When the soaking is completed, the drain valve and the air supply valve are opened. Under the action of gravity, the dilute nitric acid inside the cleaning box is discharged into the liquid storage tank through the drain pipe. At the same time, the high-pressure air pump supplies air to the liquid storage tank again, so that the air inside the liquid storage tank is sent into the rotating tube through the air supply pipe and sprayed out through the air nozzles provided on the rotating tube. The dilute nitric acid adhering to the experimental equipment is left behind under the action of the high-speed airflow, thereby reducing the residual dilute nitric acid on the surface of the experimental equipment.

[0018] 3. This kind of chemical laboratory equipment cleaning device is provided with a rotating groove. When the air inside the liquid storage tank is sent into the rotating tube through the air supply pipe, it first enters the inside of the rotating groove, so that the rotating fan plate drives the transmission shaft to rotate, and the rotating gear drives the follower gear to rotate, and then the sliding block rotates, and the rotating sliding block drives the connecting frame and the rack to move up and down reciprocatingly, and then the reciprocating gear meshing with the rack drives the rotating tube to reciprocate, so that the air ejected from the air outlet is evenly blown on the experimental equipment placed on the placement rack.

[0019] 4. This chemical laboratory equipment cleaning device is provided with a rotating nozzle. When the dilute nitric acid in the cleaning box completely flows into the liquid storage tank, the drain valve is closed, and clean water is transported to the inside of the cleaning box through the liquid inlet pipe. At the same time, the rotating nozzle is sprayed from the bottom of the placement rack to clean the experimental equipment. After the cleaning is completed, the heating tube is started to perform a drying operation, thereby achieving a good cleaning effect and solving the problem of poor cleaning effect of the existing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2It is a structural schematic diagram of the support cabinet of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the cleaning box of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the liquid storage tank of the present invention;

[0025] Figure 5 For the present invention Figure 4 The enlarged view of point A in the middle;

[0026] Figure 6 It is a schematic structural diagram of the rotating bracket of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the follower gear of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the rotating tank of the present invention.

[0029] In the attached figure: 1. support cabinet; 2. cleaning box; 3. liquid storage tank; 4. placement rack; 5. rotating pipe; 6. liquid inlet pipe; 7. rotating nozzle; 8. heating pipe; 9. air nozzle; 10. rack; 11. reciprocating gear; 12. air inlet pipe; 13. connecting frame; 14. liquid guide pipe; 15. liquid discharge pipe; 16. drain valve; 17. high-pressure air pump; 18. air guide pipe; 19. one-way valve; 20. air supply pipe; 21. air supply valve; 22. air inlet duct; 23. rotating bracket; 24. follower gear; 25. sliding block; 26. transmission shaft; 27. rotating gear; 28. rotating groove; 29. ​​rotating fan plate. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0031] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0032] See also Figures 1 to 8, a chemical laboratory equipment cleaning device comprises a supporting cabinet 1, a cleaning box 2 is fixedly installed on the top of the supporting cabinet 1, a liquid inlet pipe 6 located below the cleaning box 2 is penetrated and arranged on one side of the supporting cabinet 1, a liquid storage box 3 is fixedly installed inside the supporting cabinet 1, a placement rack 4 is fixedly installed inside the cleaning box 2, a rotating nozzle 7 located below the placement rack 4 is arranged on the other end of the liquid inlet pipe 6, a high-pressure air pump 17 is fixedly installed on the top of the liquid storage box 3, an air guide pipe 18 is fixedly installed at the air outlet of the high-pressure air pump 17, the other end of the air guide pipe 18 is fixedly installed with the top of the liquid storage box 3, a liquid guide pipe 14 is fixedly installed at the bottom of the liquid storage box 3, the other end of the liquid guide pipe 14 is penetrated and fixedly installed with the bottom of the cleaning box 2, a liquid discharge pipe 15 located on one side of the liquid discharge pipe 14 is fixedly installed at the bottom of the cleaning box 2, the bottom of the liquid discharge pipe 15 is fixedly installed with the top of the cleaning box 2, and a drain valve 16 is arranged in the middle of the liquid discharge pipe 15.

[0033] As an embodiment of the present invention, a one-way valve 19 is provided in the middle of the air guide pipe 18, and an air supply pipe 20 is fixedly installed in the middle of the air guide pipe 18. The connection between the air guide pipe 18 and the air supply pipe 20 is located between the one-way valve 19 and the liquid storage tank 3. An air intake duct 22 is fixedly installed at the air intake end of the high-pressure air pump 17, and the other end of the air intake duct 22 is vertically downward. An air supply valve 21 is provided in the middle of the air supply pipe 20. By setting the liquid storage tank 3, the dilute nitric acid for cleaning the experimental equipment is placed in the liquid storage tank 3, and the experimental equipment to be cleaned is placed on the placement rack 4. The air supply valve 21 and the drain valve 16 are closed, and the high-pressure air pump 17 is started. Air is filled into the liquid storage tank through the air guide pipe 18, so that the pressure inside the liquid storage tank 3 increases. Under the action of the pressure, the dilute nitric acid inside the liquid storage tank 3 enters the cleaning box 2 through the liquid guide pipe 14, so that the dilute nitric acid can soak the experimental equipment placed on the placement rack 4, and the experimental equipment is thoroughly cleaned by soaking.

[0034] As an embodiment of the present invention, a rotating bracket 23 located inside the supporting cabinet 1 is fixedly installed at the bottom of the cleaning box 2, the middle part of the rotating bracket 23 is rotatably connected to a follower gear 24 located on one side of the rotating bracket 23, a rotating groove 28 is fixedly installed at the bottom of the rotating bracket 23, the middle part of the rotating groove 28 is rotatably connected to a transmission shaft 26, a rotating gear 27 located on one side of the rotating bracket 23 is fixedly installed at one end of the transmission shaft 26, and the rotating gear 27 is meshed with the bottom of the follower gear 24.

[0035] As an embodiment of the present invention, the other end of the air supply pipe 20 is fixedly installed on the side of the rotating groove 28, the other side of the rotating groove 28 is fixedly installed with the intake pipe 12, the middle part of the transmission shaft 26 is fixedly installed with a rotating fan plate 29 located inside the rotating groove 28, and one side of the follower gear 24 is rotatably connected with a sliding block 25, and the rotational connection between the sliding block 25 and the follower gear 24 is close to the outer peripheral surface of the follower gear 24.

[0036] As an embodiment of the present invention, a rotating pipe 5 is rotatably connected inside the cleaning tank 2 on the front and rear sides of the placement rack 4. An air spraying port 9 is fixedly installed on one side of the rotating pipe 5 facing the placement rack 4. One end of the rotating pipe 5 penetrates through one side of the cleaning tank 2 and is hermetically rotatably connected to the air inlet pipe 12. A reciprocating gear 11 is fixedly installed on the rotating pipe 5 inside the cleaning tank 2. By providing an air supply pipe 20, after the soaking is completed, the drain valve 16 and the air supply valve 21 are opened. Under the action of gravity, the dilute nitric acid inside the cleaning tank 2 is discharged into the liquid storage tank 3 through the liquid discharge pipe 15. At the same time, the high-pressure air pump 17 sends air into the liquid storage tank 3 again, so that the air inside the liquid storage tank 3 is sent into the rotating pipe 5 through the air supply pipe 20 and sprayed out through the air spraying port 9 provided on the rotating pipe 5, leaving the dilute nitric acid adhering to the experimental equipment under the action of the high-speed air flow, and reducing the residual dilute nitric acid on the surface of the experimental equipment.

[0037] As an embodiment of the present invention, a connecting frame 13 is slidably connected through the bottom of the cleaning tank 2. A rack 10 is fixedly installed on the top of the connecting frame 13. The rack 10 is slidably connected to the front and rear side walls inside the cleaning tank 2. The reciprocating gear 11 meshes with the rack 10. The middle part of the connecting frame 13 is slidably connected through the middle part of the sliding block 25. By providing a rotating groove 28, when the air inside the liquid storage tank is sent into the rotating pipe 5 through the air supply pipe 20, it first enters the inside of the rotating groove 28, causing the rotating fan plate 29 to drive the transmission shaft 26 to rotate, causing the rotating gear 27 to drive the follower gear 24 to rotate, and further causing the sliding block 25 to rotate. The rotating sliding block 25 drives the connecting frame 13 and the rack 10 to move up and down reciprocally, and further causes the reciprocating gear 11 meshing with the rack 10 to drive the rotating pipe 5 to rotate reciprocally, so that the air sprayed out from the air spraying port 9 blows evenly on the experimental equipment placed on the placement rack 4.

[0038] As an embodiment of the present invention, a drain port is provided at the bottom of the liquid storage tank 3. The air supply valve 21 and the drain valve 16 are electric control valves. The top of the liquid guide pipe 14 is higher than the bottom inside the cleaning tank 2. Another one-way valve 19 is provided on the liquid guide pipe 14 below the cleaning tank 2. Another drain port is provided at the bottom of the side of the cleaning tank 2.

[0039] As an embodiment of the present invention, the rotating groove 28 is circular. The end of the rotating fan plate 29 is in sliding contact with the inner arc surface of the rotating groove 28. The transmission shaft 26 is coaxially arranged with the rotating groove 28.

[0040] As an embodiment of the present invention, the through-sliding connection part between the connecting frame 13 and the bottom of the cleaning tank 2 is a sealed sliding connection. The shape of the connecting frame 13 is "U" shaped. The transverse rod in the middle of the connecting frame 13 is slidably connected through the middle part of the sliding block 25.

[0041] As an embodiment of the present invention, a heating tube 8 located below the rotating nozzle 7 is fixedly installed at the bottom of the cleaning box 2, and the bottom of the heating tube 8 is higher than the bottom of the cleaning box 2. By setting the rotating nozzle 7, when the dilute nitric acid in the cleaning box 2 completely flows into the liquid storage tank, the drain valve 16 is closed, and clean water is transported to the cleaning box 2 through the liquid inlet pipe 6. At the same time, it is sprayed from the bottom of the placement rack 4 through the rotating nozzle 7 to clean the experimental equipment. After cleaning, the heating tube 8 is started and the drying operation is performed to achieve a good cleaning effect, thereby solving the problem of poor cleaning effect of the existing device.

[0042] It should be noted that, when in use, the dilute nitric acid for cleaning the experimental equipment is placed in the liquid storage tank 3, the experimental equipment to be cleaned is placed on the placement rack 4, the air supply valve 21 and the drain valve 16 are closed, the high-pressure air pump 17 is started, and air is filled into the liquid storage tank through the air guide pipe 18, so that the pressure inside the liquid storage tank 3 increases. Under the action of pressure, the dilute nitric acid inside the liquid storage tank 3 enters the cleaning box 2 through the liquid guide pipe 14, so that the dilute nitric acid can soak the experimental equipment placed on the placement rack 4, and the experimental equipment is thoroughly cleaned by soaking. When the soaking is completed, the drain valve 16 and the air supply valve 21 are opened, and the dilute nitric acid inside the cleaning box 2 is discharged into the liquid storage tank 3 through the drain pipe 15 under the action of gravity. At the same time, the high-pressure air pump 17 again supplies air to the liquid storage tank 3, so that the air inside the liquid storage tank 3 is sent into the rotating tube 5 through the air supply pipe 20, and is sprayed out through the air nozzle 9 set on the rotating tube 5, leaving the dilute nitric acid adhering to the experimental equipment under the action of the high-speed airflow. To reduce the residual dilute nitric acid on the surface of the experimental equipment, when the air inside the liquid storage tank is sent into the rotating tube 5 through the air supply pipe 20, it first enters the interior of the rotating groove 28, so that the rotating fan plate 29 drives the transmission shaft 26 to rotate, so that the rotating gear 27 drives the follower gear 24 to rotate, and then the sliding block 25 is rotated, and the connecting frame 13 and the rack 10 are driven by the rotating sliding block 25 to reciprocate up and down, so that the reciprocating gear 11 meshing with the rack 10 drives the rotating tube 5 to reciprocate, so that the air sprayed from the air nozzle 9 is evenly blown on the experimental equipment placed on the placement rack 4. When the dilute nitric acid inside the cleaning box 2 completely flows into the liquid storage tank, the drain valve 16 is closed, and clean water is transported to the inside of the cleaning box 2 through the liquid inlet pipe 6. At the same time, it is sprayed from the bottom of the placement rack 4 through the rotating nozzle 7 to clean the experimental equipment. After the cleaning is completed, the heating tube 8 is started to perform a drying operation to achieve a good cleaning effect, thereby solving the problem of poor cleaning effect of the existing device.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A chemical laboratory equipment cleaning device, comprising a support cabinet (1), characterized in that: A cleaning box (2) is fixedly installed on the top of the support cabinet (1); a liquid inlet pipe (6) located below the cleaning box (2) is provided through one side of the support cabinet (1); a liquid storage box (3) is fixedly installed inside the support cabinet (1); a placement rack (4) is fixedly installed inside the cleaning box (2); a rotating nozzle (7) located below the placement rack (4) is provided at the other end of the liquid inlet pipe (6); a high-pressure air pump (17) is fixedly installed on the top of the liquid storage box (3); and an air outlet of the high-pressure air pump (17) is fixedly installed. An air guide pipe (18) is installed, the other end of the air guide pipe (18) is fixedly installed on the top of the liquid storage tank (3), a liquid guide pipe (14) is fixedly installed on the bottom of the liquid storage tank (3), the other end of the liquid guide pipe (14) is fixedly installed through the bottom of the cleaning tank (2), a drainage pipe (15) located on one side of the drainage pipe (14) is fixedly installed on the bottom of the cleaning tank (2), the bottom of the drainage pipe (15) is fixedly installed on the top of the cleaning tank (2), and a drainage valve (16) is arranged in the middle of the drainage pipe (15).

2. A chemical laboratory equipment cleaning device according to claim 1, characterized in that: A one-way valve (19) is arranged in the middle of the air guide pipe (18), an air supply pipe (20) is fixedly installed in the middle of the air guide pipe (18), and the connection between the air guide pipe (18) and the air supply pipe (20) is located between the one-way valve (19) and the liquid storage tank (3). An air intake conduit (22) is fixedly installed at the air intake end of the high-pressure air pump (17), and the other end of the air intake conduit (22) is vertically downward. An air supply valve (21) is arranged in the middle of the air supply pipe (20).

3. A chemical laboratory equipment cleaning device according to claim 2, characterized in that: A rotating bracket (23) located inside the supporting cabinet (1) is fixedly mounted on the bottom of the cleaning box (2); the middle of the rotating bracket (23) is rotatably connected to a follower gear (24) located on one side of the rotating bracket (23); a rotating groove (28) is fixedly mounted on the bottom of the rotating bracket (23); the middle of the rotating groove (28) is rotatably connected to a transmission shaft (26); one end of the transmission shaft (26) is fixedly mounted with a rotating gear (27) located on one side of the rotating bracket (23); the rotating gear (27) is meshed with the bottom of the follower gear (24).

4. A chemical laboratory equipment cleaning device according to claim 3, characterized in that: The other end of the air supply pipe (20) is fixedly mounted on the side of the rotating groove (28), the other side of the rotating groove (28) is fixedly mounted with an air intake pipe (12), the middle part of the transmission shaft (26) is fixedly mounted with a rotating fan plate (29) located inside the rotating groove (28), one side of the follower gear (24) is rotatably connected with a sliding block (25), and the rotational connection between the sliding block (25) and the follower gear (24) is close to the outer peripheral surface of the follower gear (24).

5. A chemical laboratory equipment cleaning device according to claim 4, characterized in that: The interior of the cleaning box (2) is rotatably connected to a rotating tube (5) located at the front and rear sides of the placement rack (4); a nozzle (9) is fixedly installed on the side of the rotating tube (5) facing the placement rack (4); one end of the rotating tube (5) passes through one side of the cleaning box (2) and is sealed and rotatably connected to an air inlet pipe (12); and a reciprocating gear (11) located inside the cleaning box (2) is fixedly installed on the rotating tube (5).

6. A chemical laboratory equipment cleaning device according to claim 5, characterized in that: A connecting frame (13) is slidably connected through the bottom of the cleaning tank (2). A rack (10) is fixedly installed at the top of the connecting frame (13). The rack (10) is slidably connected to the front and rear side walls inside the cleaning tank (2). The reciprocating gear (11) meshes with the rack (10). The middle part of the connecting frame (13) is slidably connected through the middle part of the sliding block (25).

7. A chemical laboratory equipment cleaning device according to claim 2, characterized in that: A drain port is provided at the bottom of the liquid storage tank (3). The air supply valve (21) and the drain valve (16) are electrically controlled valves. The top of the liquid guide pipe (14) is higher than the bottom inside the cleaning tank (2). Another one-way valve (19) is provided on the liquid guide pipe (14) below the cleaning tank (2). Another drain port is provided at the bottom of the side of the cleaning tank (2).

8. A chemical laboratory equipment cleaning device according to claim 4, characterized in that: The rotating groove (28) is circular. The end of the rotating fan plate (29) is in sliding contact with the inner arc surface of the rotating groove (28). The transmission shaft (26) is coaxially arranged with the rotating groove (28).

9. A chemical laboratory equipment cleaning device according to claim 6, characterized in that: The through sliding connection part between the connecting frame (13) and the bottom of the cleaning tank (2) is a sealed sliding connection. The shape of the connecting frame (13) is "U". The transverse rod in the middle of the connecting frame (13) is slidably connected through the middle part of the sliding block (25).

10. The chemical laboratory equipment cleaning device according to claim 1, characterized in that: A heating pipe (8) is fixedly installed at the bottom inside the cleaning tank (2) below the rotating nozzle (7). The bottom of the heating pipe (8) is higher than the bottom inside the cleaning tank (2).

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