A sampling device and a sampling method for preparing hydrogen peroxide

Abstract

The invention relates to the field of hydrogen peroxide sampling, and discloses a sampling device for hydrogen peroxide preparation and a sampling method thereof, comprising a circulation tube, an end tube and a plug-in tube, both ends of the circulation tube are connected with the end tubes, a plug-in tube is fixedly inserted in the middle of the lower part of the circulation tube, an extraction structure is arranged in the plug-in tube, a plurality of L-shaped tubes are arranged on the plug-in tube through a rotating structure, a sampling tube is arranged at the bottom end of each of the L-shaped tubes, a screw sleeve is rotatably provided at the outer side of the sampling tube near the upper position, the screw sleeve is tightened on the L-shaped tube, a second blocking structure is arranged on the L-shaped tube, a first blocking structure is arranged on the sampling tube, and the sampling tube can be flexibly switched to be connected with the plug-in tube by using the rotating structure, so that hydrogen peroxide produced in different time periods can be sampled, thereby improving the sampling quality.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen peroxide sampling, and in particular to a sampling device and a sampling method for preparing hydrogen peroxide. Background Art

[0002] Hydrogen peroxide is a colorless, transparent liquid with strong oxidizing properties. It is relatively stable at low temperatures and high purity. When heated to 153°C or higher, it will undergo violent explosive decomposition. The pH value of the medium has a great influence on the stability of hydrogen peroxide. Under acidic conditions, the properties of hydrogen peroxide are relatively stable, and the oxidation reaction is slow. In the preparation process of hydrogen peroxide, a sampling device is required for sampling.

[0003] In the prior art hydrogen peroxide sampling device, when sampling hydrogen peroxide flowing through the circulation housing, the hydrogen peroxide mixture enters the sampling cylinder through the liquid inlet filter cartridge, so that the sampled sample liquid can be filtered and impurities removed by the liquid inlet filter cartridge, and then the sample liquid entering the sampling cylinder is discharged and collected, thereby reducing the impurity content in the sampled hydrogen peroxide;

[0004] However, the hydrogen peroxide sampling device in the prior art only samples the hydrogen peroxide in a certain period of time, which reduces the sampling efficiency. Therefore, there is room for improvement. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a sampling device and a sampling method for preparing hydrogen peroxide.

[0006] In a first aspect, the present invention provides a sampling device for preparing hydrogen peroxide, which adopts the following technical solution:

[0007] A sampling device for preparing hydrogen peroxide, comprising a circulation tube, an end tube and a plug-in tube, both ends of the circulation tube are connected to the end tubes, a plug-in tube is fixedly inserted in the middle of the bottom of the circulation tube, an extraction structure is arranged in the plug-in tube, a plurality of L-shaped tubes are arranged on the plug-in tube through a rotating structure, a sampling tube is arranged at the bottom end of each L-shaped tube, a screw sleeve is rotatably provided on the outside of the sampling tube near the top, the screw sleeve is tightened on the L-shaped tube, a second blocking structure is arranged on the L-shaped tube, and a first blocking structure is arranged on the sampling tube;

[0008] The rotating structure includes a first fixed sleeve fixedly mounted on the plug-in tube near the middle, a lifting structure is arranged at the bottom of the first fixed sleeve, a first through hole connected to the plug-in tube is opened on the first fixed sleeve, a first rotating sleeve is rotatably mounted on the side of the first fixed sleeve, a plurality of second through holes are opened on the first rotating sleeve, a plurality of L-shaped tubes are respectively connected to the first rotating sleeve at the positions of the second through holes, and a rotating structure is arranged at the bottom end of the plug-in tube.

[0009] Preferably, the extraction structure includes a lifting column that is movably inserted into the bottom end of the plug-in tube, the top of the lifting column is fixedly connected to a plug rod, a second fixed sleeve is fixedly provided at a position near the middle of the plug rod, a piston is fixedly provided on the second fixed sleeve, and the piston is tightly attached to the inner wall of the plug-in tube, a pull-out rod is movably provided on the top of the plug rod, a first spring is provided on the plug rod, both ends of the first spring are respectively connected to the second fixed sleeve and the bottom end of the pull-out rod, a plug is fixedly provided on the top of the pull-out rod, and the plug is tightened at the upper edge of the plug-in tube.

[0010] Preferably, the rotating structure includes a first gear rotatably connected to the bottom of the plug-in tube, a driving sleeve is fixedly installed at the bottom of the first gear, a driving sleeve is fixedly installed at the bottom of the first gear, a third fixed sleeve is provided at the outer side of the driving sleeve, a driving space is left between the third fixed sleeve and the driving sleeve, a connecting strip is connected at the top of the driving sleeve, one end of the connecting strip is connected to the plug-in tube, a through groove is provided at the inner wall of the third fixed sleeve away from the connecting strip, the third fixed sleeve is in the through groove and rotates through a rotating shaft, a sleeve fixed in the middle of the rotating shaft is provided with a second gear, the second gear is meshingly connected with the teeth on the side of the driving sleeve, a second rotating sleeve is provided on the outer surface of the third fixed sleeve, teeth meshingly connected with the second gear are provided on the inner wall of the second rotating sleeve, a first connecting rod is connected at the position of each L-shaped tube on the outer surface of the second rotating sleeve, and the top of the first connecting rod is connected to the L-shaped tube.

[0011] Preferably, the lifting structure includes an electric telescopic rod installed below the first fixed sleeve, the bottom end of the electric telescopic rod output shaft is provided with a second connecting rod through a transmission structure, the second connecting rod movably passes through the third fixed sleeve, and the bottom end of the second connecting rod is connected to the bottom end of the lifting column.

[0012] Preferably, the transmission structure includes a U-shaped plate connected to the bottom end of the output shaft of the electric telescopic rod, the top end of the second connecting rod is fixedly connected to the U-shaped plate, a screw is rotatably passed through the U-shaped plate, a switching block is sleeved on the screw, the top of the switching block is attached to the upper inner wall of the U-shaped plate, a threaded groove for the screw to pass through is opened on the switching block, a rotating disk is fixedly sleeved on one end of the screw, vertical bars are connected to both sides of the bottom of the switching block, and two belts are fixedly passed through the bottom ends of the two vertical bars respectively. A movable rod, a transmission plate is arranged at the lower edge of the plug-in tube just below the U-shaped plate, a slide bar is installed at the bottom of the transmission plate, and the slide bar is slidably arranged in the slide groove of the lower edge of the plug-in tube, an insertion groove is arranged at the rear side of the left side and the front side of the right side of the transmission plate, and a plurality of driving grooves are respectively arranged on the left and right side surfaces of the transmission plate, the top of the insertion groove is connected with the corresponding driving groove, and vertical grooves are arranged at the lower groove walls of two adjacent driving grooves, and one end of the driving rod on the left side is movably inserted into the insertion groove.

[0013] Preferably, the first blocking structure includes a fourth fixing sleeve fixedly mounted on the sampling cylinder, the inner wall of the sampling cylinder is provided with a first inner plate at the position of the fourth fixing sleeve, the left and right sides of the first inner plate are provided with a first communicating port, the fourth fixing sleeve is provided with a first inner cavity respectively connected to the two first communicating ports, a first blocking plate is tightly inserted into the first communicating port, the two first blocking plates are connected to the first T-shaped rod in the middle of a side away from each other, a second spring is sleeved on a part of the first T-shaped rod that passes through the fourth fixing sleeve, two ends of the second spring are respectively connected to one end of the first T-shaped rod and the fourth fixing sleeve, two first extrusion rods are connected to the first inner plate near the middle position, the two first sealing plates are connected to the first extrusion plates on the side close to each other, the two first extrusion plates are provided with a first extrusion groove on the side close to each other, and the groove wall of the two first extrusion grooves on the side away from each other is an inclined surface.

[0014] Preferably, the second blocking structure includes a fifth fixing sleeve fixedly sleeved on the L-shaped tube near the bottom end, the inner wall of the L-shaped tube being provided with a second inner plate at the position of the fifth fixing sleeve, the second inner plate being provided with a second communicating opening at both front and rear sides, the fifth fixing sleeve being provided with a second inner cavity respectively communicating with the two second communicating openings, and the two second communicating openings being tightly inserted with a second blocking plate, the two second blocking plates being connected at the middle of a side surface away from each other with a second T-shaped rod movably passing through the fifth fixing sleeve, the part of the second T-shaped rod passing through the fifth fixing sleeve being sleeved with a third spring, the two ends of the third spring being respectively connected to one end of the fifth fixing sleeve and the second T-shaped rod, a second extrusion plate being installed at the edge of a side surface close to each other under the two second blocking plates, a second extrusion groove being provided on a side surface close to each other of the two second extrusion plates, the groove wall on a side surface away from each other of the two second extrusion grooves being both inclined, and two second extrusion rods being connected near the middle under the second inner plate.

[0015] In a second aspect, the present application provides a sampling method for preparing hydrogen peroxide, which adopts the following technical solution:

[0016] A sampling method for preparing hydrogen peroxide comprises the following steps:

[0017] Step 1: Connect the two end pipes to the pipelines in the hydrogen peroxide production equipment;

[0018] Step 2: The lifting structure drives the extraction structure to extract the hydrogen peroxide flowing in the circulation cylinder into one of the sampling cylinders;

[0019] Step 3: When sampling hydrogen peroxide produced in different time periods, the lifting structure drives the extraction structure to sample the hydrogen peroxide, and the rotating structure, the transmission structure and the rotating structure are used to automatically switch the sampling tube to sample the hydrogen peroxide;

[0020] Step 4: After sampling, the sampling cylinder is rotated down from the bottom end of the L-shaped tube, and the corresponding sampling cylinder and the L-shaped tube can be automatically blocked through the first blocking structure and the second blocking structure.

[0021] In summary, the present invention includes the following beneficial technical effects:

[0022] 1. The present invention provides a first fixed sleeve on the plug-in tube, and provides multiple groups of L-shaped tubes and sampling tubes on the first fixed sleeve through a rotating structure. The sampling tube can be flexibly switched to be connected with the plug-in tube by using the rotating structure, so that hydrogen peroxide produced in different time periods can be sampled, thereby improving the sampling quality;

[0023] 2. The present invention is provided with a lifting structure and an extraction structure. The lifting structure can automatically drive the extraction structure to extract hydrogen peroxide into the corresponding sampling tube to perform sampling work, which is more labor-saving and convenient to operate;

[0024] 3. The present invention is provided with a lifting structure, a rotating structure and a transmission structure, so that the lifting structure drives the extraction structure to perform sampling, and cooperates with the rotating structure and the transmission structure to automatically switch the corresponding sampling tube and the plug-in tube connecting tube to perform sampling, thereby realizing the automatic switching function;

[0025] 4. The present invention is provided with a first blocking structure and a second blocking structure, so that after the sampling cylinder and the L-shaped tube are plugged in, the sampling cylinder and the L-shaped tube are automatically connected; after the sampling cylinder and the L-shaped tube are disassembled, the sampling cylinder and the L-shaped tube are blocked separately to prevent dust and other impurities in the air from entering the L-shaped tube or the sampling cylinder, affecting the sampling quality and making it difficult to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0027] Figure 2 Schematic diagram of the internal structure of the plug-in tube in the embodiment of the present invention;

[0028] Figure 3 is a schematic diagram of the structure inside the flow-through cylinder in an embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of the structure of the disassembled circulation cartridge in the embodiment of the present invention;

[0030] Figure 5 In the embodiment of the present invention Figure 4 A magnified view of the structure at A;

[0031] Figure 6 2 is a schematic diagram of the structure in which the plug-in pipe is located at the transmission plate in an embodiment of the present invention;

[0032] Figure 7 In the embodiment of the present invention Figure 6 A magnified view of the structure at B;

[0033] Figure 8 is a structural schematic diagram of a transmission structure in an embodiment of the present invention;

[0034] Fig. 9 is a structural schematic diagram of a first blocking structure in an embodiment of the present invention;

[0035] Fig.10 It is a structural schematic diagram of the second blocking structure in an embodiment of the present invention.

[0036] Description of the accompanying drawings: 1. circulation tube; 2. end tube; 3. plug-in tube; 4. first fixed sleeve; 5. first rotating sleeve; 6. L-shaped tube; 7. screw sleeve; 8. sampling tube; 9. pull-out rod; 10. plugging rod; 11. first spring; 12. second fixed sleeve; 13. lifting column; 14. piston; 15. plugging head; 16. first gear; 17. driving sleeve; 18. second rotating sleeve; 19. third fixed sleeve; 20. first connecting rod; 21. rotating shaft; 22. second gear; 23. connecting strip; 24. electric telescopic rod; 25. second connecting rod; 26. U-shaped plate; 27. screw rod; 28. switching block; 29. ​​turntable; 30. Vertical bar; 31. Driving rod; 32. Transmission plate; 33. L-shaped plate; 34. Sliding bar; 35. Insertion groove; 36. Driving groove; 37. Vertical groove; 38. Fourth fixed sleeve; 39. First inner plate; 40. First connecting port; 41. First blocking plate; 42. First T-shaped rod; 43. Second spring; 44. First extrusion plate; 45. First extrusion groove; 46. First extrusion rod; 47. Second inner plate; 48. Second connecting port; 49. Second blocking plate; 50. Second T-shaped rod; 51. Third spring; 52. Second extrusion plate; 53. Second extrusion groove; 54. Second extrusion rod; 55. Fifth fixed sleeve. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-Figure 10 The present invention is described in further detail.

[0038] The embodiment of the invention discloses a sampling device for preparing hydrogen peroxide.

[0039] A sampling device for preparing hydrogen peroxide, comprising a flow tube 1, an end tube 2 and a plug tube 3, both ends of the flow tube 1 are connected with the end tube 2, a plug tube 3 is fixedly inserted into the middle of the lower part of the flow tube 1, an extraction structure is arranged in the plug tube 3, a plurality of L-shaped tubes 6 are arranged on the plug tube 3 through a rotating structure, a sampling tube 8 is arranged at the bottom end of each L-shaped tube 6, a screw sleeve 7 is rotatably sleeved near the upper part of the outside of the sampling tube 8, the screw sleeve 7 is tightened on the L-shaped tube 6, a second blocking structure is arranged on the L-shaped tube 6, and a first blocking structure is arranged on the sampling tube 8;

[0040] The rotating structure includes a first fixed sleeve 4 fixedly sleeved on the plug-in tube 3 near the middle, a lifting structure is arranged below the first fixed sleeve 4, a first through hole connected to the plug-in tube 3 is provided on the first fixed sleeve 4, a first rotating sleeve 5 is rotatably sleeved on the side of the first fixed sleeve 4, a plurality of second through holes are provided on the first rotating sleeve 5, a plurality of L-shaped tubes 6 are respectively connected to the first rotating sleeve 5 at the positions of the second through holes, and a rotating structure is arranged at the bottom end of the plug-in tube 3;

[0041] The extraction structure includes a lifting column 13 that is movably inserted into the bottom end of the plug-in tube 3, a plug rod 10 is fixedly connected to the top of the lifting column 13, a second fixed sleeve 12 is fixedly sleeved near the middle of the plug rod 10, a piston 14 is fixedly sleeved on the second fixed sleeve 12, and the piston 14 is tightly attached to the inner wall of the plug-in tube 3, a pull-out rod 9 is movably sleeved on the top of the plug rod 10, a first spring 11 is sleeved on the plug rod 10, and the two ends of the first spring 11 are respectively connected to the second fixed sleeve 12 and the bottom end of the pull-out rod 9, a plug head 15 is fixedly sleeved on the top of the pull-out rod 9, and the plug head 15 is tightened at the upper edge of the plug-in tube 3;

[0042] The lifting structure includes an electric telescopic rod 24 installed below the first fixed sleeve 4. The bottom end of the output shaft of the electric telescopic rod 24 is provided with a second connecting rod 25 through a transmission structure. The second connecting rod 25 movably passes through the third fixed sleeve 19. The bottom end of the second connecting rod 25 is connected to the bottom end of the lifting column 13. When sampling, the electric telescopic rod 24 is started to drive the lifting column 13 to move upward in the plug-in tube 3, pushing the plug head 15 to move away at the upper edge of the plug-in tube 3. At this time, the lifting column 13 drives the piston 14 to move above the first through hole on the plug-in tube 3, and the plug-in tube 3 and the circulation tube 1 are connected to each other. The hydrogen peroxide in the circulation tube 1 flows into the plug-in tube 3, and then under the action of the electric telescopic rod 24, the lifting column 13 and the plug head 15 are driven to move downward as a whole. When the plug head 15 is tightened to the top of the plug-in tube 3 When the piston 14 is at the end, the top end of the plug-in tube 3 is blocked. At this time, the piston 14 is still above the first through hole, and the electric telescopic rod 24 continues to drive the lifting column 13 to move downward, driving the plug rod 10 to move downward in the pull rod 9, and the first spring 11 is stretched by the second fixed sleeve 12. As the piston 14 continues to move downward, the first through hole is exposed, so that the hydrogen peroxide entering the plug-in tube 3 enters the sampling tube 8 from the L-shaped tube 6 to perform sampling. When it is necessary to sample the hydrogen peroxide prepared in different time periods, it is only necessary to rotate the first rotating sleeve 5 on the first fixed sleeve 4 to drive the next L-shaped tube 6 to be connected to the plug-in tube 3, so that the vacant sampling tube 8 can be switched and sampling can be performed again. In addition, the first fixed sleeve 4 blocks the end of the L-shaped tube 6 after sampling, and the sampling tube 8 after sampling can be automatically blocked.

[0043] See also Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8, the rotating structure includes a first gear 16 rotatably connected to the bottom end of the plug-in tube 3, a driving sleeve 17 is fixedly installed at the bottom end of the first gear 16, a third fixed sleeve 19 is arranged at the outer side of the driving sleeve 17, a driving space is left between the third fixed sleeve 19 and the driving sleeve 17, a connecting strip 23 is connected to the upper part of the driving sleeve 17, one end of the connecting strip 23 is connected to the plug-in tube 3, a through groove is provided at the inner wall of the third fixed sleeve 19 away from the connecting strip 23, the third fixed sleeve 19 is in the through groove and rotates through a rotating shaft 21, a second gear 22 is fixed at the middle of the rotating shaft 21, the second gear 22 is meshed with the teeth on the side of the driving sleeve 17, a second rotating sleeve 18 is rotatably provided on the outer side surface of the third fixed sleeve 19, teeth meshed with the second gear 22 are arranged on the inner wall of the second rotating sleeve 18, and a first connecting rod 20 is connected to the position of each L-shaped tube 6 on the outer side surface of the second rotating sleeve 18, and the top of the first connecting rod 20 is connected to the L-shaped tube 6;

[0044] The transmission structure includes a U-shaped plate 26 connected to the bottom end of the output shaft of the electric telescopic rod 24, the top end of the second connecting rod 25 is fixedly connected to the U-shaped plate 26, a screw 27 is rotatably passed through the U-shaped plate 26, a switching block 28 is sleeved on the screw 27, the top of the switching block 28 is attached to the upper inner wall of the U-shaped plate 26, a threaded groove for the screw 27 to pass through is opened on the switching block 28, a turntable 29 is fixedly sleeved on one end of the screw 27, vertical bars 30 are connected to both sides below the switching block 28, and two driving rods 31 are fixedly passed through the bottom ends of the two vertical bars 30, a transmission plate 32 is arranged at the lower edge of the plug-in tube 3 just below the U-shaped plate 26, a slide bar 34 is installed at the lower part of the transmission plate 32, and the slide bar 34 is slidably arranged in the slide groove opened at the lower edge of the plug-in tube 3, and the rear side of the left side and the front side of the right side of the transmission plate 32 are provided with insertion grooves 35. A plurality of driving grooves 36 are respectively provided on the left and right side surfaces of the transmission plate 32, and the top of the insertion groove 35 is connected to the corresponding driving groove 36, and a vertical groove 37 is provided at the lower groove wall of the two adjacent driving grooves 36. One end of the driving rod 31 on the left side is movably inserted into the insertion groove 35, and the electric telescopic rod 24 drives the lifting column 13 to move up and down, and then in the sampling process, the driving rod 31 on the left side is driven to slide in the driving groove 36 and the vertical groove 37 respectively, to drive the transmission plate 32 and the L-shaped plate 33 to move intermittently toward the rear side as a whole, and through the first gear 16 and the driving sleeve 17, the rotating shaft 21 and the second gear 22 are driven to rotate, and the second gear 22 drives the second rotating sleeve 18 to rotate. Since the second rotating sleeve 18 is connected to the L-shaped tube 6 through the first connecting rod 20, it automatically drives the first rotating sleeve 5 to rotate on the first fixed sleeve 4, thereby realizing the automatic switching function of the sampling cylinder 8.

[0045] See also Figure 1 , Fig. 9 Fig.10The first blocking structure includes a fourth fixing sleeve 38 fixedly sleeved on the sampling tube 8, a first inner plate 39 is installed on the inner wall of the sampling tube 8 at the position of the fourth fixing sleeve 38, first connecting ports 40 are provided on the left and right sides of the first inner plate 39, a first inner cavity connected to the two first connecting ports 40 is provided in the fourth fixing sleeve 38, a first blocking plate 41 is inserted into the first connecting port 40, and a first T-shaped rod 42 is connected to the middle of the two first blocking plates 41 away from one side, and the first T-shaped rod 42 A second spring 43 is sleeved on the portion passing through the fourth fixing sleeve 38, and the two ends of the second spring 43 are respectively connected to one end of the first T-shaped rod 42 and the fourth fixing sleeve 38. Two first extrusion rods 46 are connected to the first inner plate 39 near the middle. The two first blocking plates 41 are connected to the first extrusion plates 44 on the sides close to each other. The two first extrusion plates 44 are provided with first extrusion grooves 45 on the sides close to each other. The groove walls of the two first extrusion grooves 45 on the sides away from each other are both inclined surfaces.

[0046] The second blocking structure includes a fifth fixed sleeve 55 fixedly sleeved at a position near the bottom end of the L-shaped tube 6, a second inner plate 47 is installed at the inner wall of the L-shaped tube 6 at the position of the fifth fixed sleeve 55, second connecting ports 48 are opened at the front and rear sides of the second inner plate 47, a second inner cavity connecting the two second connecting ports 48 is opened in the fifth fixed sleeve 55, and a second blocking plate 49 is tightly inserted in the two second connecting ports 48, and a second T-shaped rod 50 that movably passes through the fifth fixed sleeve 55 is connected to the middle of the side away from each other of the two second blocking plates 49, and a third spring 51 is sleeved on the part of the second T-shaped rod 50 that passes through the fifth fixed sleeve 55, and the two ends of the third spring 51 are respectively connected to one end of the fifth fixed sleeve 55 and the second T-shaped rod 50, and a second extrusion plate 52 is installed at the side edge close to each other under the two second blocking plates 49, and a second extrusion groove 53 is opened on the side surface close to each other of the two second extrusion plates 52. The groove walls on one side of the second extrusion groove 53 that are away from each other are all inclined surfaces, and two second extrusion rods 54 are connected near the middle under the second inner plate 47. When the sampling tube 8 is inserted into the L-shaped tube 6 for installation, the second extrusion groove 53 on the second extrusion plate 52 is squeezed by the first extrusion rod 46 to open the second connecting port 48 in the L-shaped tube 6, and the groove wall of the first extrusion groove 45 on the first extrusion plate 44 is squeezed by the second extrusion rod 54 to push open the two first blocking plates 41 in the sampling tube 8, thereby opening the first connecting port 40, so that when the sampling tube 8 is plugged into the L-shaped tube 6, the L-shaped tube 6 and the sampling tube 8 are automatically connected. When the sampling tube 8 is removed from the L-shaped tube 6, under the resetting action of the second spring 43 on the first blocking plate 41, and the automatic resetting of the second blocking plate 49 by the third spring 51, the disassembled sampling tube 8 and the L-shaped tube 6 are automatically blocked, so as to prevent dust and other debris in the air from entering the L-shaped tube 6 and the sampling tube 8.

[0047] The embodiment of the present invention also discloses a sampling method for preparing hydrogen peroxide, comprising the following steps:

[0048] Step 1: Connect the two end pipes 2 to the pipelines in the hydrogen peroxide production equipment;

[0049] Step 2: The lifting structure drives the extraction structure to extract the hydrogen peroxide flowing in the circulation tube 1 into one of the sampling tubes 8;

[0050] Step 3: When sampling hydrogen peroxide produced in different time periods, the lifting structure drives the extraction structure to sample the hydrogen peroxide, and the rotating structure, the transmission structure and the rotating structure are used to automatically switch the sampling tube 8 to sample the hydrogen peroxide;

[0051] Step 4: After sampling, the sampling cylinder 8 is rotated down from the bottom end of the L-shaped tube 6, and the corresponding sampling cylinder 8 and the L-shaped tube 6 can be automatically blocked through the first blocking structure and the second blocking structure.

[0052] The implementation principle of a sampling device for preparing hydrogen peroxide and a sampling method thereof according to an embodiment of the present invention is as follows: when sampling, the electric telescopic rod 24 is started to drive the lifting column 13 to move upward in the plug-in tube 3, pushing the plug head 15 to move away from the upper edge of the plug-in tube 3. At this time, the lifting column 13 drives the piston 14 to move above the first through hole on the plug-in tube 3, and the plug-in tube 3 and the flow tube 1 are connected to each other, and the hydrogen peroxide in the flow tube 1 flows into the plug-in tube 3. Then, under the action of the electric telescopic rod 24, the lifting column 13 and the plug head 15 are driven to move downward as a whole. When the plug head 15 is tightened to the top of the plug-in tube 3, the top of the plug-in tube 3 is blocked. The piston 14 is still above the first through hole, and the electric telescopic rod 24 continues to drive the lifting column 13 to move downward, driving the insertion rod 10 to move downward in the pulling rod 9, and the first spring 11 is stretched through the second fixing sleeve 12. As the piston 14 continues to move downward, the first through hole is exposed, so that the hydrogen peroxide entering the insertion tube 3 enters the sampling tube 8 from the L-shaped tube 6 to perform sampling. When it is necessary to sample the hydrogen peroxide prepared in different time periods, as the electric telescopic rod 24 drives the lifting column 13 to move up and down, and then in the process of sampling, the driving rod 31 on the left side is driven to slide in the driving groove 36 and the vertical groove 37 respectively, to drive the transmission The plate 32 and the L-shaped plate 33 move intermittently toward the rear side as a whole, and drive the rotating shaft 21 and the second gear 22 to rotate through the first gear 16 and the driving sleeve 17, and the second gear 22 drives the second rotating sleeve 18 to rotate. Since the second rotating sleeve 18 is connected with the L-shaped tube 6 through the first connecting rod 20, the first rotating sleeve 5 is automatically driven to rotate on the first fixed sleeve 4, thereby realizing the automatic switching function of the sampling tube 8, which is more labor-saving and convenient from the left. When the transmission plate 32 moves to the rearmost position, the rotating disk 29 can be used to rotate the screw 27, and the switching block 28 moves when the rotating screw 27 moves, and the driving rod 31 on the left vertical bar 30 is moved from the left corresponding The electric telescopic rod 24 drives the lifting column 13 to move up and down for sampling, and at the same time, drives the first rotating sleeve 5 to rotate in the reverse direction, and continues to switch the sampling tube 8. When the sampling tube 8 is removed from the L-shaped tube 6, the second spring 43 resets the first blocking plate 41, and the third spring 51 resets the second blocking plate 49 automatically, so that the disassembled sampling tube 8 and the L-shaped tube 6 are automatically blocked respectively, to prevent dust and other debris in the air from entering the L-shaped tube 6 and the sampling tube 8, which is not easy to clean.

[0053] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sampling device for preparing hydrogen peroxide, comprising a flow-through tube (1), an end tube (2) and a plug-in tube (3), characterized in that: Both ends of the circulation tube (1) are connected to end tubes (2); a plug-in tube (3) is fixedly inserted into the middle of the bottom of the circulation tube (1); an extraction structure is arranged inside the plug-in tube (3); a plurality of L-shaped tubes (6) are arranged on the plug-in tube (3) through a rotating structure; a sampling tube (8) is arranged at the bottom end of each L-shaped tube (6); a screw sleeve (7) is rotatably sleeved on the outside of the sampling tube (8) near the top; the screw sleeve (7) is tightened on the L-shaped tube (8); a second blocking structure is arranged on the L-shaped tube (6); and a first blocking structure is arranged on the sampling tube (8); The rotating structure comprises a first fixed sleeve (4) fixedly sleeved on the plug-in tube (3) near the middle, a lifting structure is arranged below the first fixed sleeve (4), a first through hole connected to the plug-in tube (3) is provided on the first fixed sleeve (4), a first rotating sleeve (5) is rotatably sleeved on the side of the first fixed sleeve (4), a plurality of second through holes are provided on the first rotating sleeve (5), a plurality of L-shaped tubes (6) are respectively connected to the first rotating sleeve (5) at the positions of the second through holes, and a rotating structure is arranged at the bottom end of the plug-in tube (3).

2. A sampling device for preparing hydrogen peroxide according to claim 1, characterized in that: The extraction structure comprises a lifting column (13) movably inserted into the bottom end of the plug-in tube (3); a plug rod (10) is fixedly connected to the top end of the lifting column (13); a second fixed sleeve (12) is fixedly provided on the plug rod (10) at a position close to the middle; a piston (14) is fixedly provided on the second fixed sleeve (12); the piston (14) is tightly attached to the inner wall of the plug-in tube (3); a pull-out rod (9) is movably provided on the top end of the plug rod (10); a first spring (11) is provided on the plug rod (10); the two ends of the first spring (11) are respectively connected to the second fixed sleeve (12) and the bottom end of the pull-out rod (9); a plug (15) is fixedly provided on the top end of the pull-out rod (9); the plug (15) is tightened on the upper edge of the plug-in tube (3).

3. A sampling device for preparing hydrogen peroxide according to claim 1, characterized in that: The rotating structure comprises a first gear (16) rotatably connected to the bottom end of the plug-in tube (3); a driving sleeve (17) is fixedly installed at the bottom end of the first gear (16); a third fixing sleeve (19) is arranged on the outer side of the driving sleeve (17); a driving space is reserved between the third fixing sleeve (19) and the driving sleeve (17); a connecting strip (23) is connected to the top of the driving sleeve (17); one end of the connecting strip (23) is connected to the plug-in tube (3); a through groove is provided on the inner wall of the third fixing sleeve (19) at a position away from the connecting strip (23); the third fixing sleeve (19) A rotating shaft (21) is rotatably passed through the through groove, a sleeve fixed in the middle of the rotating shaft (21) is provided with a second gear (22), the second gear (22) is meshingly connected with the teeth on the side of the driving sleeve (17), a second rotating sleeve (18) is rotatably provided on the outer surface of the third fixed sleeve (19), the inner wall of the second rotating sleeve (18) is provided with teeth meshingly connected with the second gear (22), the outer surface of the second rotating sleeve (18) is connected with a first connecting rod (20) at a position corresponding to each L-shaped tube (6), and the top end of the first connecting rod (20) is connected to the L-shaped tube (6).

4. A sampling device for preparing hydrogen peroxide according to claim 1, characterized in that: The lifting structure comprises an electric telescopic rod (24) installed below the first fixed sleeve (4); the bottom end of the output shaft of the electric telescopic rod (24) is provided with a second connecting rod (25) through a transmission structure; the second connecting rod (25) movably passes through the third fixed sleeve (19); the bottom end of the second connecting rod (25) is connected to the bottom end of the lifting column (13).

5. A sampling device for preparing hydrogen peroxide according to claim 1, characterized in that: The transmission structure comprises a U-shaped plate (26) connected to the bottom end of the output shaft of the electric telescopic rod (24); the top end of the second connecting rod (25) is fixedly connected to the U-shaped plate (26); a screw rod (27) is rotatably passed through the U-shaped plate (26); a switching block (28) is sleeved on the screw rod (27); the top of the switching block (28) is attached to the upper inner wall of the U-shaped plate (26); a threaded groove for the screw rod (27) to pass through is formed on the switching block (28); a rotating disk (29) is fixedly sleeved on one end of the screw rod (27); vertical bars (30) are connected to both sides of the bottom of the switching block (28); two driving rods ( 31), a transmission plate (32) is arranged at the lower edge of the plug tube (3) just below the U-shaped plate (26), a slide bar (34) is installed below the transmission plate (32), and the slide bar (34) is slidably arranged in a slide groove at the lower edge of the plug tube (3), an insertion groove (35) is arranged at the rear side of the left side and the front side of the right side of the transmission plate (32), and a plurality of driving grooves (36) are respectively arranged on the left and right side surfaces of the transmission plate (32), the top of the insertion groove (35) is connected to the corresponding driving groove (36), and the lower groove walls of two adjacent driving grooves (36) are each provided with a vertical groove (37), and one end of the left driving rod (31) is movably inserted into the insertion groove (35).

6. A sampling device for preparing hydrogen peroxide according to claim 1, characterized in that: The first blocking structure comprises a fourth fixing sleeve (38) fixedly mounted on the sampling tube (8); a first inner plate (39) is installed on the inner wall of the sampling tube (8) at the position of the fourth fixing sleeve (38); first connecting ports (40) are respectively provided on the left and right sides of the first inner plate (38); a first inner cavity is provided in the fourth fixing sleeve (38) and is respectively connected to the two first connecting ports (40); a first blocking plate (41) is tightly inserted into the first connecting port (40); a first T-shaped rod (42) is connected to the middle of the two first blocking plates (41) away from one side; the first T-shaped rod ( A second spring (43) is sleeved on the portion of the first inner plate (39) that passes through the fourth fixing sleeve (38), and the two ends of the second spring (43) are respectively connected to one end of the first T-shaped rod (42) and the fourth fixing sleeve (38). Two first extrusion rods (46) are connected to the first inner plate (39) near the middle. The two first blocking plates (41) are connected to first extrusion plates (44) on one side close to each other. The two first extrusion plates (44) are provided with first extrusion grooves (45) on one side close to each other, and the groove walls of the two first extrusion grooves (45) on the side away from each other are both inclined.

7. A sampling device for preparing hydrogen peroxide according to claim 1, characterized in that: The second blocking structure comprises a fifth fixing sleeve (55) fixedly sleeved on the L-shaped tube (6) near the bottom end; a second inner plate (47) is installed on the inner wall of the L-shaped tube (6) at the position of the fifth fixing sleeve (55); second connecting openings (48) are provided on both the front and rear sides of the second inner plate (47); a second inner cavity respectively connected to the two second connecting openings (48) is provided in the fifth fixing sleeve (55); a second blocking plate (49) is tightly inserted into the two second connecting openings (48); and a second T-shaped rod (49) movably passing through the fifth fixing sleeve (55) is connected to the middle of a side surface away from each other of the two second blocking plates (49). 50), a third spring (51) is sleeved on the portion of the second T-shaped rod (50) passing through the fifth fixing sleeve (55), two ends of the third spring (51) are respectively connected to the fifth fixing sleeve (55) and one end of the second T-shaped rod (50), a second extrusion plate (52) is installed at the edge of the side close to each other under the two second blocking plates (49), a second extrusion groove (53) is opened on the side surface close to each other of the two second extrusion plates (52), and the groove walls of the two second extrusion grooves (53) away from each other are inclined surfaces, and two second extrusion rods (54) are connected near the middle under the second inner plate (47).

8. A sampling method for preparing hydrogen peroxide, characterized in that: The sampling method uses a sampling device for preparing hydrogen peroxide as described in any one of claims 1 to 7, comprising the following steps: Step 1: Connect the two end pipes (2) to the pipelines in the hydrogen peroxide production equipment; Step 2: The extraction structure is driven by the lifting structure to extract the hydrogen peroxide flowing in the circulation cylinder (1) into one of the sampling cylinders (8); Step 3: When sampling hydrogen peroxide produced in different time periods, the lifting structure drives the extraction structure to sample the hydrogen peroxide, and the rotating structure, the transmission structure and the rotating structure are used to automatically switch the sampling tube (8) to sample the hydrogen peroxide; Step 4: After sampling, the sampling cylinder (8) is rotated down from the bottom end of the L-shaped tube (6), and the corresponding sampling cylinder (8) and the L-shaped tube (6) can be automatically blocked by the first blocking structure and the second blocking structure.

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