CN116688866A - Automatic sampling system of chemical reaction kettle and application method - Google Patents
Automatic sampling system of chemical reaction kettle and application method Download PDFInfo
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- CN116688866A CN116688866A CN202310739172.XA CN202310739172A CN116688866A CN 116688866 A CN116688866 A CN 116688866A CN 202310739172 A CN202310739172 A CN 202310739172A CN 116688866 A CN116688866 A CN 116688866A
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- 238000005070 sampling Methods 0.000 title claims abstract description 76
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 269
- 239000011521 glass Substances 0.000 claims abstract description 97
- 238000003860 storage Methods 0.000 claims abstract description 91
- 238000007667 floating Methods 0.000 claims abstract description 74
- 230000000903 blocking effect Effects 0.000 claims abstract description 45
- 238000007789 sealing Methods 0.000 claims description 18
- 238000009423 ventilation Methods 0.000 claims description 18
- 239000011550 stock solution Substances 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 2
- 230000007246 mechanism Effects 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 7
- 238000013459 approach Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
- B01J4/007—Feed or outlet devices as such, e.g. feeding tubes provided with moving parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/005—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the outlet side being of particular interest
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1031—Sampling from special places
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N1/14—Suction devices, e.g. pumps; Ejector devices
- G01N2001/1418—Depression, aspiration
- G01N2001/1427—Positive displacement, piston, peristaltic
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydrology & Water Resources (AREA)
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- General Health & Medical Sciences (AREA)
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of chemical machinery, in particular to an automatic sampling system of a chemical reaction kettle and a use method thereof, wherein the automatic sampling system comprises a sampling tube, a first cylindrical valve body, a liquid storage glass tube, a second cylindrical valve body and a third cylindrical valve body, wherein a control valve is arranged on the outer wall of the first cylindrical valve body, a buoyancy opening and closing assembly is arranged in the liquid storage glass tube, the buoyancy opening and closing assembly comprises an annular floating plate, an upper blocking body, a lower blocking body, a blocking piece and a limiting mechanism.
Description
Technical Field
The invention relates to the technical field of chemical machinery, in particular to an automatic sampling system of a chemical reaction kettle and a use method thereof.
Background
The reaction kettle is widely understood to be a container with physical or chemical reaction, and the heating, evaporating and cooling functions and the low-speed and high-speed mixing functions required by the process are realized through structural design and parameter configuration of the container.
The reaction kettle is a comprehensive reaction container, and the structural function and configuration accessories of the reaction kettle are designed according to the reaction conditions. The preset reaction steps can be completed with higher automation degree from the beginning of feeding, reaction and discharging, and the important parameters such as temperature, pressure, mechanical control, reactant concentration and the like in the reaction process are strictly regulated and controlled. The structure of the device is generally composed of a kettle body, a transmission device, a stirring device, a heating device, a cooling device and a sealing device. Auxiliary equipment matched correspondingly: fractionation columns, condensers, water separators, collection tanks, filters, and the like.
During production, reactant liquid in the reaction kettle needs to be sampled and observed, a sampler is needed to be used during sampling, the traditional sampler is mostly composed of an inner insertion tube, a liquid storage tube, a sampling bottle, a negative pressure system and a valve body system, the valve body system comprises a plurality of valve bodies which are respectively used for controlling the in-out of the liquid and the in-out of the gas, finally, the liquid storage tube is ensured to be a closed negative pressure space during liquid pumping, after liquid pumping, the air pressure in the liquid storage tube is kept consistent with the external air pressure, so that the liquid in the liquid storage tube is discharged, the negative pressure system is used for providing negative pressure suction, the liquid level in the reaction kettle is ensured to be pumped out, wherein during actual operation, operators need to observe the liquid level in the liquid storage tube in real time, the valve body system is finally ensured to be discharged into the sampling bottle, the leakage is easy to occur through manual control of the valve body system, and meanwhile, the valve body system is further caused to be not to be opened or closed in time, and finally, the chemical engineering reaction kettle is required to be provided, and the sampling and the method is used for solving the problems.
Disclosure of Invention
Based on the above, it is necessary to provide an automatic sampling system for chemical reaction kettles and a using method thereof, aiming at the problems in the prior art.
In order to solve the problems in the prior art, the invention adopts the following technical scheme: an automatic sampling system of a chemical reaction kettle comprises a sampling tube, a first cylindrical valve body, a liquid storage glass tube, a second cylindrical valve body and a third cylindrical valve body which are coaxially connected end to end and sequentially distributed along the vertical direction from bottom to top, wherein a liquid inlet groove is coaxially arranged in the first cylindrical valve body, a liquid draining groove which is horizontal and communicated with the liquid inlet groove is arranged on the outer wall of the first cylindrical valve body, a through groove is coaxially arranged in the second cylindrical valve body, a horizontal and communicated air ventilating groove is arranged on the outer wall of the second cylindrical valve body, a connecting groove is coaxially arranged in the third cylindrical valve body, a negative pressure groove which is horizontal and communicated with the connecting groove is arranged on the outer wall of the third cylindrical valve body, the upper end of the sampling tube is communicated with the lower end of the liquid inlet groove, the upper end and the lower end of the liquid storage glass tube are respectively communicated with the lower end of the through groove and the upper end of the liquid inlet groove, the upper end of the through groove is communicated with the lower end of the connecting groove, the control valve for opening and closing the liquid discharge groove is arranged on the outer wall of the first cylindrical valve body, the buoyancy opening and closing assembly is arranged in the liquid storage glass tube and comprises an annular floating plate, an upper blocking body, a lower blocking body, a collision piece and a limiting mechanism, the upper blocking body is connected with the lower blocking body through a vertical rod, the collision piece is arranged on the vertical rod, the collision piece is located above the annular floating plate, the annular floating plate slides in the liquid storage glass tube, the movable sleeve is arranged on the vertical rod, the limiting mechanism comprises a limiting ring and a limiting plate, the limiting ring is formed in the liquid storage glass tube and is used for limiting the descending of the annular floating plate, the limiting plate is formed in the upper end of the sampling tube and is used for limiting the descending of the lower blocking body, the annular floating plate and the upper blocking body are of a hollow structure, the upper blocking body is used for opening and closing the ventilation groove and the negative pressure groove, and the lower blocking body is used for opening and closing the liquid inlet groove.
Further, the linking groove is divided into a conical groove and a narrow groove from bottom to top in sequence, the small caliber end of the conical groove faces upwards, the large caliber end of the conical groove is communicated with the upper end of the through groove, the narrow groove is vertical, the lower end of the narrow groove is communicated with the small caliber end of the conical groove, the negative pressure groove is communicated with the upper end of the narrow groove, the diameter of the through groove is smaller than that of the through groove, the upper plug body is a cylindrical shell sliding in the through groove, the outer diameter of the cylindrical shell is consistent with that of the through groove, the upper end of the cylindrical shell is gradually reduced to be a first conical shell which is matched with the conical groove, the lower end of the cylindrical shell is downwards reduced to be a second conical shell, ventilation holes which are uniformly distributed along the circumferential direction of the cylindrical shell are formed in the circumferential surface of the first conical shell, and the upper end of the vertical rod penetrates through the second conical shell and the cylindrical shell in sequence and then is coaxially and fixedly connected with the bottom of the first conical shell.
Further, the lower blocking body is a sealed circular plate, the upper half part of the liquid inlet groove is cylindrical, the lower half part of the liquid inlet groove is flaring-shaped, the upper end of the sampling pipe is communicated with the lower half part of the liquid inlet groove, the limiting plate is circular, the outer diameter of the limiting plate is smaller than the inner diameter of the sampling pipe, the top of the limiting plate is provided with a circular groove which is concave downwards and is used for accommodating the sealed circular plate, a circle of horizontal connecting strips which are uniformly distributed along the circumferential direction of the limiting plate are arranged between the limiting plate and the sampling pipe, two ends of each horizontal connecting strip are respectively connected with the outer wall of the limiting plate and the inner wall of the sampling pipe, a circular ring is coaxially formed in the upper half part of the liquid inlet groove, the center of the circular ring is a liquid inlet, and the lower end of the vertical rod is coaxially fixedly connected with the top of the sealed circular plate after downwards penetrating through the liquid inlet.
Further, the annular floating plate is of a hollow structure, a plurality of strip-shaped ventilation grooves uniformly distributed along the circumferential direction of the annular floating plate are formed in the annular floating plate, two limiting strips uniformly distributed along the circumferential direction of the liquid storage glass tube are formed in the inner wall of the liquid storage glass tube, the length direction of each limiting strip is parallel to the axial direction of the liquid storage glass tube, and two limiting grooves respectively in sliding fit with the two limiting strips are formed in the peripheral wall of the annular floating plate.
Further, the middle section of montant is the helicitic texture, the interference piece is the screw thread cover of locating on the montant middle section soon, the shaping has two branches along screw thread cover's circumferencial direction evenly distributed on the outer wall, all seted up on the one end of every branch with corresponding limit strip sliding fit's spout, the top of a conical shell is equipped with the rotating part, the rotating part includes changeing cover and telescopic link, the ladder groove has been seted up inwards at the top of third cylindricality valve body, the diameter of the lower half of ladder groove is less than the diameter of its upper half, and the lower half of ladder groove is linked together with the upper end of narrow groove, the upper half internal fixation of ladder groove is equipped with the column cover, the column cover is embedded to be equipped with two along its axial evenly distributed's first sealing bearing, change the cover vertical down with the inner circle of two first sealing bearing link firmly, and the lower extreme of changeing the cover stretches into in the narrow groove, the upper end of changeing the cover upwards stretches out outside the third cylindricality valve body, and the upper end of changeing the cover is the seal structure, the telescopic link is coaxial even inserting cover of top of a conical shell, the upper end of change the upper end of a conical shell has the upper end of two and the upper end of the same axial direction of the upper end of a telescopic link to be parallel to the two and the upper end of the strip is set up respectively.
Further, the control valve includes rectangle valve body and rotatory valve pin, horizontal chute has been seted up in the rectangle valve body and liquid groove is linked together with the drain chute, the liquid groove is vertical and its upper end is linked together with the other end of horizontal chute, the lower extreme in liquid groove link up the bottom of rectangle valve body to this forms the liquid outlet, a rotatory groove in horizontal run through horizontal chute middle section has been seted up on the rectangle valve body, rotatory valve pin rotates in rotatory inslot, be equipped with in the rotatory groove and be used for supplying rotatory valve pin to rotate and prevent the second sealed bearing of gas in and out, two through liquid breach along rotatory valve pin's circumferencial direction evenly distributed have been seted up on the rotatory valve pin.
Further, the periphery of stock solution glass pipe is equipped with a plurality of bracing piece along the circumferencial direction evenly distributed of stock solution glass pipe, the upper end of every bracing piece all upwards is inconsistent with the bottom of second cylinder valve body, the lower extreme of every bracing piece all downwards is inconsistent with the conflict of first cylinder valve body, the upper and lower both ends distribution shaping of every bracing piece has a connecting rod and No. two connecting rods, a connecting rod upwards links to each other second cylinder valve body and third cylinder valve body, a connecting rod downwards links firmly with first cylinder valve body, fixedly be equipped with the cover between first cylinder valve body and the second cylinder valve body and locate the outer transparent cover of a plurality of bracing piece, the upper end of stock solution glass pipe links firmly with the bottom of second cylinder valve body, the lower extreme of stock solution glass pipe stretches into in the upper half of feed liquor groove downwards.
Further, two arc-shaped sliding guide strips uniformly distributed along the circumferential direction of the annular floating plate are embedded on the outer wall of the annular floating plate, and each arc-shaped sliding guide strip is attached to the inner wall of the liquid storage glass tube.
The application method of the chemical reaction kettle automatic sampling system comprises the following steps:
s1, exhausting the negative pressure groove, rotating the rotary valve pin, and testing whether the horizontal groove is closed or not;
s2, rotating the rotating sleeve, observing the position of the threaded sleeve in the liquid storage glass tube through the transparent cover, and controlling the distance between the threaded sleeve and the annular floating plate;
s3, inserting the sampling tube into the reaction kettle downwards to extract liquid;
s4, observing whether the liquid level in the liquid storage glass tube rises through the transparent cover, and when the liquid level does not rise any more, rotating the rotary valve pin to discharge the liquid and collecting and sampling the discharged liquid.
Compared with the prior art, the invention has the following beneficial effects:
firstly, the device automatically controls the opening and closing of two groups of valve bodies through the buoyancy opening and closing assembly, so that after the liquid level in the liquid storage glass tube rises to a certain extent, the negative pressure suction negative pressure groove is closed, and meanwhile, a liquid inlet groove for liquid to flow upwards is closed, so that the liquid is finally ensured to be suspended in the liquid storage glass tube, in the process, manual intervention is not needed, the phenomenon of careless leakage caused by closing the valve bodies by manual operation is avoided, and the liquid sampling efficiency is further improved;
secondly, in the whole sampling process, an operator only needs to control the discharge of liquid through a control valve, and the speed of the discharged liquid can be controlled through the control valve of the device, so that the liquid is prevented from being rapidly discharged to cause the liquid to overflow the collecting bottle;
thirdly, the liquid amount of drawing into the liquid storage glass tube at every turn needs to be determined according to the sampling amount, and after the sampling is finished, if a large amount of liquid is reserved in the liquid storage glass tube, the part of liquid can only return into the reaction kettle again, so that the waste of the sampled sample can be caused, the position of the threaded sleeve in the liquid storage glass tube in the vertical direction is adjusted through the rotating part of the device, and finally, the liquid amount flowing into the liquid storage glass tube is controlled by changing the distance between the threaded sleeve and the annular floating plate.
Drawings
FIG. 1 is a schematic perspective view of an embodiment;
FIG. 2 is a top view of an embodiment;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged partial schematic view of the portion A1 in FIG. 3;
FIG. 5 is an enlarged partial schematic view designated by A2 in FIG. 3;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 7 is a cross-sectional view taken along line C-C of FIG. 2;
fig. 8 is an exploded perspective view of the second cylindrical valve body, the third cylindrical valve body and the liquid storage glass tube of the embodiment;
FIG. 9 is an enlarged partial schematic view designated by A3 in FIG. 8;
FIG. 10 is an exploded view of the perspective structure of the cylindrical sleeve and the third cylindrical valve body of the embodiment;
FIG. 11 is a schematic perspective view of a rotor sleeve of an embodiment;
FIG. 12 is an exploded view of the three-dimensional structure of the buoyancy opening/closing assembly and the liquid storage glass tube of the embodiment;
FIG. 13 is a schematic perspective view of a sampling tube according to an embodiment.
The reference numerals in the figures are: 1. a sampling tube; 2. a first cylindrical valve body; 3. a liquid storage glass tube; 4. a second cylindrical valve body; 5. a third cylindrical valve body; 6. a liquid inlet tank; 7. a liquid discharge tank; 8. a through groove; 9. a vent groove; 10. a connection groove; 11. a negative pressure tank; 12. an annular floating plate; 13. a vertical rod; 14. a limiting ring; 15. a limiting plate; 16. a conical groove; 17. a narrow groove; 18. a cylindrical shell; 19. a first conical shell; 20. a second conical shell; 21. ventilation holes; 22. a sealing circular plate; 23. a circular groove; 24. a horizontal connecting bar; 25. a circular ring; 26. a liquid inlet; 27. a strip-shaped ventilation groove; 28. a limit bar; 29. a limit groove; 30. a thread sleeve; 31. a supporting strip; 32. a chute; 33. a rotating sleeve; 34. a telescopic rod; 35. a stepped groove; 36. a columnar sleeve; 37. a first sealed bearing; 38. cutting; 39. a strip-shaped slot; 40. a rectangular valve body; 41. rotating the valve pin; 42. a horizontal launder; 43. a liquid outlet groove; 44. a liquid outlet; 45. a rotary groove; 46. a second sealed bearing; 47. a liquid-passing notch; 48. a support rod; 49. a first connecting rod; 50. a second connecting rod; 51. a transparent cover; 52. an arc-shaped slide guiding strip.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the invention and the specific objects and functions achieved.
An automatic sampling system of a chemical reaction kettle, which is described by referring to fig. 1 to 13, comprises a sampling tube 1, a first cylindrical valve body 2, a liquid storage glass tube 3, a second cylindrical valve body 4 and a third cylindrical valve body 5 which are coaxially connected end to end and sequentially distributed from bottom to top along the vertical direction, wherein a liquid inlet groove 6 is coaxially arranged in the first cylindrical valve body 2, a liquid discharging groove 7 which is horizontal and communicated with the liquid inlet groove 6 is arranged on the outer wall of the first cylindrical valve body 2, a through groove 8 is coaxially arranged in the second cylindrical valve body 4, a ventilation groove 9 which is horizontal and communicated with the through groove 8 is arranged on the outer wall of the second cylindrical valve body 4, a connecting groove 10 is coaxially arranged in the third cylindrical valve body 5, a negative pressure groove 11 which is horizontal and communicated with the connecting groove 10 is arranged on the outer wall of the third cylindrical valve body 5, the upper end of the sampling tube 1 is communicated with the lower end of the liquid inlet groove 6, the upper end and the lower end of the liquid storage glass tube 3 are respectively communicated with the lower end of the through groove 8 and the upper end of the liquid inlet groove 6, the upper end of the through groove 8 is communicated with the lower end of the connecting groove 10, a control valve for opening and closing the liquid outlet groove 7 is arranged on the outer wall of the first cylindrical valve body 2, a buoyancy opening and closing component is arranged in the liquid storage glass tube 3, the buoyancy opening and closing component comprises an annular floating plate 12, an upper blocking body, a lower blocking body, a collision piece and a limiting mechanism, the upper blocking body is connected with the lower blocking body through a vertical rod 13, the collision piece is arranged on the vertical rod 13, the collision piece is arranged above the annular floating plate 12, the annular floating plate 12 slides in the liquid storage glass tube 3 and is movably sleeved on the vertical rod 13, the limiting mechanism comprises a limiting ring 14 and a limiting plate 15, the limiting ring 14 is formed in the liquid storage glass tube 3, the limiting ring 14 is used for limiting the descending of the annular floating plate 12, the limiting plate 15 is formed in the upper end of the sampling tube 1, the limiting plate 15 is used for limiting the descending of the lower blocking body, the annular floating plate 12 and the upper blocking body are hollow structures, the upper blocking body is used for opening and closing the ventilation groove 9 and the negative pressure groove 11, and the lower blocking body is used for opening and closing the liquid inlet groove 6.
The negative pressure groove 11 on the third cylindrical valve body 5 of the device is connected with an external negative pressure source (not shown in the figure), in an initial state, the annular floating plate 12 slides down by self weight and is limited by the limiting ring 14, so that the annular floating plate 12 is located in the lower end of the liquid storage glass tube 3, the upper blocking body and the lower blocking body are connected into a whole through the vertical rod 13, the lower blocking body slides down by self weight and is limited by the limiting plate 15, so that the liquid inlet groove 6 in the current first cylindrical valve body 2 is in an open state, the air vent groove 9 in the second cylindrical valve body 4 is blocked by the upper blocking body to be in a closed state, the negative pressure groove 11 in the third cylindrical valve body 5 is in an open state, and the current liquid discharge groove 7 is closed by the control valve, thereafter, the sampling tube 1 is inserted into the reaction kettle downwards, and the external negative pressure source connected with the negative pressure groove 11 is started, because the air vent groove 9 and the liquid discharge groove 7 are already closed at this time, then a closed negative pressure space is formed in the through groove 8, the connecting groove 10, the liquid storage glass tube 3, the liquid inlet groove 6 and the sampling tube 1, then the liquid is pumped out by the sampling tube 1, in the process, the liquid is discharged into the liquid storage glass tube 3 through the liquid inlet groove 6, the liquid level in the liquid storage glass tube 3 gradually rises, the annular floating plate 12 positioned in the lower end of the liquid storage glass tube 3 can be lifted by the buoyancy of the liquid, when the annular floating plate 12 ascends to be contacted with the abutting piece, the annular floating plate 12 can drive the abutting piece to ascend together, the abutting piece can drive the whole vertical rod 13 to ascend, finally the upper blocking body and the lower blocking body can synchronously ascend, in the process, the upper blocking body can seal the negative pressure groove 11, and simultaneously open the ventilation groove 9, the lower blocking body can seal the liquid inlet groove 6, after the upper blocking body seals the negative pressure groove 11, the upper plug body is sucked by buoyancy suction generated by the negative pressure groove 11, so that the lower plug body connected with the upper plug body through the vertical rod 13 is in a temporary fixed state, the lower plug body can always seal the liquid inlet groove 6 in the current period, after the negative pressure groove 11 and the liquid inlet groove 6 are sealed, liquid in the liquid storage glass tube 3 can be suspended in the liquid storage glass tube 3, after the vent groove 9 is opened, the liquid in the liquid storage glass tube 3 can be pressed down by external larger air pressure, at the moment, the liquid in the liquid storage glass tube 3 can be discharged by opening the liquid discharge groove 7 through the control valve, and finally, the liquid in the reaction kettle is sampled;
after the sampling is finished, the annular floating plate 12 can descend to an initial state along with the liquid level in the liquid storage glass tube 3, and then the external negative pressure source is closed, so that the upper plug body, the vertical rod 13 and the lower plug body can descend through dead weight until the lower plug body is limited by the limiting plate 15 again.
In order to show the specific structure of the upper blocking body, the following characteristics are provided:
the connecting groove 10 is sequentially divided into a conical groove 16 and a narrow groove 17 from bottom to top, the small-caliber end of the conical groove 16 faces upwards, the large-caliber end of the conical groove 16 is communicated with the upper end of the through groove 8, the narrow groove 17 is vertical, the lower end of the narrow groove 17 is communicated with the small-caliber end of the conical groove 16, the negative pressure groove 11 is communicated with the upper end of the narrow groove 17, the diameter of the ventilation groove 9 is smaller than that of the through groove 8, the upper plug body is a cylindrical shell 18 sliding in the through groove 8, the outer diameter of the cylindrical shell 18 is consistent with that of the through groove 8, the upper end of the cylindrical shell 18 is gradually reduced to a first conical shell 19 which is matched with the conical groove 16, the lower end of the cylindrical shell 18 is gradually reduced to a second conical shell 20, ventilation holes 21 uniformly distributed along the circumferential direction of the first conical shell 19 are formed in the circumferential surface, and the upper end of the vertical rod 13 sequentially penetrates through the second conical shell 20 and the cylindrical shell 18 and is coaxially and fixedly connected with the bottom of the first conical shell 19.
In the initial state, after the lower blocking body downwards abuts against the limiting plate 15, the cylindrical shell 18 can seal the opening communicated with the vent groove 9 and the vent groove 8, the first conical shell 19 can be downwards separated from the conical groove 16, when the negative pressure groove 11 generates negative pressure suction, the narrow groove 17 and the conical groove 16 can have negative pressure suction, at the moment, the gas in the sampling tube 1 can upwards move, after passing through the liquid storage glass tube 3, the gas can upwards pass through the whole upper blocking body and is discharged from the plurality of air holes 21, meanwhile, the liquid can enter the liquid storage glass tube 3 along the sampling tube 1, the annular floating plate 12 is upwards lifted by buoyancy, after the annular floating plate 12 upwards contacts with the abutting piece, the first conical shell 19 can upwards move towards the conical groove 16, the cylindrical shell 18 can upwards slide in the vent groove 8, the second conical shell 20 is displaced upwards towards the vent groove 9, so that when the first conical shell 19 gradually approaches the conical groove 16 upwards, the second conical shell 20 gradually approaches the vent groove 9, the opening of the vent groove 9 communicated with the vent groove 8 is gradually opened, finally, after the first conical shell 19 is completely attached to the conical groove 16 upwards, the opening of the vent groove 9 communicated with the vent groove 8 is completely opened, at the moment, the top of the first conical shell 19 seals the opening at the lower end of the narrow groove 17, the first conical shell 19 is adsorbed in the conical groove 16 by negative pressure suction force, so that the negative pressure of the extracted liquid is disconnected, the lower plug is in a fixed state, the liquid inlet groove 6 is sealed by the lower plug, the liquid inlet groove 6 and the narrow groove 17 are simultaneously sealed, after the vent groove 9 is opened, the external air pressure enters the liquid storage glass tube 3 through the vent groove 8, thereby pressing down the liquid in the liquid storage glass tube 3;
in the process that the first conical shell 19 gradually approaches upwards to the conical groove 16, the opening of the ventilation groove 9 communicated with the ventilation groove 8 is gradually opened, so that little air from the outside flows into the ventilation groove 8, but at the moment, the negative pressure groove 11 is not closed yet, and the conical groove 16 has larger suction force, so that the air from the outside does not influence the upward extraction of liquid at the moment;
the upper blocking body, the lower blocking body and the vertical rods 13 are all made of light materials so that the annular floating plate 12 is driven to ascend, and after the negative pressure groove 11 generates suction force, the upward gas is discharged from the air holes 21 due to the air holes 21 arranged on the upper blocking body, so that the upper blocking body is difficult to automatically move upwards due to the negative pressure suction force generated by the negative pressure groove 11 in an initial state.
In order to reveal the specific structure of the lower blocking body and the mounting manner of the limiting plate 15, the following features are provided:
the lower blocking body is a sealing circular plate 22, the upper half part of the liquid inlet groove 6 is cylindrical, the lower half part of the liquid inlet groove 6 is flaring, the upper end of the sampling tube 1 is communicated with the lower half part of the liquid inlet groove 6, the limiting plate 15 is circular, the outer diameter of the limiting plate is smaller than the inner diameter of the sampling tube 1, a circular groove 23 which is sunken downwards and is used for accommodating the sealing circular plate 22 is formed in the top of the limiting plate 15, a circle of horizontal connecting strips 24 which are uniformly distributed along the circumferential direction of the limiting plate 15 are arranged between the limiting plate 15 and the sampling tube 1, two ends of each horizontal connecting strip 24 are respectively connected with the outer wall of the limiting plate 15 and the inner wall of the sampling tube 1, a circular ring 25 is coaxially formed in the upper half part of the liquid inlet groove 6, the center of the circular ring 25 is a liquid inlet 26, and the lower end of the vertical rod 13 passes through the liquid inlet 26 downwards and is coaxially and fixedly connected with the top of the sealing circular plate 22.
In the initial state, the sealing circular plate 22 is located in the circular groove, when the liquid is pumped out, the liquid will pass through the sampling tube 1, then the liquid will be discharged into the lower half part of the liquid inlet groove 6 through the gap between the adjacent horizontal connecting strips 24, the liquid entering the lower half part of the liquid inlet groove 6 will be discharged into the upper half part of the liquid inlet groove 6 through the liquid inlet opening 26 in the center of the circular ring 25, and finally the liquid will enter the liquid storage glass tube 3 through the upper half part of the liquid inlet groove 6.
In order to specifically show the sliding connection mode of the annular floating plate 12 and the liquid storage glass tube 3, the following features are provided:
the annular floating plate 12 is of a hollow structure, a plurality of strip-shaped ventilation grooves 27 uniformly distributed along the circumferential direction of the annular floating plate 12 are formed in the annular floating plate 12, two limiting strips 28 uniformly distributed along the circumferential direction of the liquid storage glass tube 3 are formed in the inner wall of the liquid storage glass tube 3, the length direction of each limiting strip 28 is parallel to the axial direction of the liquid storage glass tube 3, and two limiting grooves 29 which are respectively in sliding fit with the two limiting strips 28 are formed in the circumferential wall of the annular floating plate 12.
Through the cooperation of spacing groove 29 on the annular floating plate 12 and spacing strip 28 on the inner wall of stock solution glass pipe 3 for annular floating plate 12 can only follow vertical direction after being promoted by buoyancy and move, a plurality of bar ventilation groove 27 on the annular floating plate 12 are used for the gas to flow through, ensure that negative pressure groove 11 produces negative pressure suction after, the gas that upwards flows can pass annular floating plate 12, when annular floating plate 12 receives liquid buoyancy to rise, because liquid has certain density and has surface tension, liquid can be located the below of annular floating plate 12 always, can not upwards gush out through a plurality of bar ventilation groove 27.
In order to reveal the structure of the abutments and in order to be able to adjust the spacing of the abutments from the annular floating plate 12, the following features are provided:
the middle section of the vertical rod 13 is of a threaded structure, the abutting piece is a threaded sleeve 30 which is rotationally arranged on the middle section of the vertical rod 13, two supporting strips 31 which are evenly distributed along the circumferential direction of the threaded sleeve 30 are formed on the outer wall of the threaded sleeve 30, a sliding groove 32 which is in sliding fit with the corresponding limiting strip 28 is formed at one end of each supporting strip 31, a rotating piece is arranged above the first conical shell 19 and comprises a rotating sleeve 33 and a telescopic rod 34, a stepped groove 35 is formed in the top of the third cylindrical valve body 5 inwards, the diameter of the lower half part of the stepped groove 35 is smaller than that of the upper half part of the stepped groove 35, the lower half part of the stepped groove 35 is communicated with the upper end of the narrow groove 17, a cylindrical sleeve 36 is fixedly arranged in the upper half part of the stepped groove 35, the columnar sleeve 36 is embedded with two first sealing bearings 37 which are uniformly distributed along the axial direction of the columnar sleeve, the rotating sleeve 33 is vertically and downwardly fixedly connected with the inner rings of the two first sealing bearings 37, the lower end of the rotating sleeve 33 stretches into the narrow groove 17, the upper end of the rotating sleeve 33 stretches out of the third columnar valve body 5 upwards, the upper end of the rotating sleeve 33 is of a closed structure, the telescopic rod 34 is coaxially and fixedly connected with the top of the first conical shell 19, the upper end of the telescopic rod 34 is upwardly inserted into the lower end of the rotating sleeve 33, two cutting bars 38 which are uniformly distributed along the circumferential direction of the rotating sleeve 33 are formed on the inner wall of the lower end of the rotating sleeve 33, the length direction of each cutting bar 38 is parallel to the axial direction of the rotating sleeve 33, and two strip-shaped inserting grooves 39 which are respectively matched with the two cutting bars 38 are formed on the outer wall of the upper end of the telescopic rod 34.
The liquid amount pumped into the liquid storage glass tube 3 each time needs to be determined according to the sampling amount, when the sampling is finished, if a large amount of liquid is reserved in the liquid storage glass tube 3, the part of liquid can only return into the reaction kettle again, so that the waste of the sampled sample can be caused, and the liquid amount entering the liquid storage glass tube 3 needs to be controlled;
when the annular floating plate 12 rises under the buoyancy of liquid, the annular floating plate 12 rises for a certain distance and then contacts with the interference piece, the vertical rod 13 is driven to rise by the interference piece, the rising of the vertical rod 13 drives the upper blocking body and the lower blocking body to rise, the liquid inlet groove 6 and the negative pressure groove 11 are sealed, and finally the liquid is suspended in the liquid storage glass tube 3, so that the liquid amount entering the liquid storage glass tube 3 can be controlled by changing the distance between the interference piece and the annular floating plate 12;
when the rotating sleeve 33 is manually rotated, the rotating sleeve 33 drives the telescopic rod 34 to rotate through the cooperation of the cutting 38 and the strip-shaped slot 39, the telescopic rod 34 drives the first conical shell 19 to rotate, the first conical shell 19 drives the vertical rod 13 to rotate, the vertical rod 13 drives the threaded sleeve 30 in threaded fit with the middle section of the vertical rod 13 to rotate after rotating, and the threaded sleeve 30 can only move up and down along the axial direction of the vertical rod 13 because the threaded sleeve 30 is limited to rotate by the two branch strips 31, so that the distance between the threaded sleeve 30 and the annular floating plate 12 is adjusted, and finally the liquid amount flowing into the liquid storage glass tube 3 is controlled by changing the distance between the threaded sleeve 30 and the annular floating plate 12;
in the initial state, the sealing circular plate 22 is located in the circular groove 23, at this time, the upper end of the telescopic rod 34 is inserted into the lower end of the rotating sleeve 33, so that when the annular floating plate 12 abuts against the threaded sleeve 30 and drives the vertical rod 13 to rise, the upper plug body rises, so as to drive the telescopic rod 34 to gradually insert into the rotating sleeve 33 upwards, and finally, the rotating sleeve 33 is ensured to always drive the telescopic rod 34 to rotate.
In order to reveal the specific structure of the control valve, the following features are provided:
the control valve comprises a rectangular valve body 40 and a rotary valve pin 41, wherein a horizontal flow groove 42 and a liquid outlet groove 43 are formed in the rectangular valve body 40, one end of the horizontal flow groove 42 is communicated with the liquid outlet groove 7, the liquid outlet groove 43 is vertical, the upper end of the liquid outlet groove is communicated with the other end of the horizontal flow groove 42, the bottom of the rectangular valve body 40 is communicated with the lower end of the liquid outlet groove 43, a liquid outlet 44 is formed in the liquid outlet groove, a rotary groove 45 transversely penetrating through the middle section of the horizontal flow groove 42 is formed in the rectangular valve body 40, the rotary valve pin 41 rotates in the rotary groove 45, a second sealing bearing 46 for allowing the rotary valve pin 41 to rotate and preventing gas from entering and exiting is arranged in the rotary groove 45, and two liquid through gaps 47 uniformly distributed along the circumferential direction of the rotary valve pin 41 are formed in the rotary valve pin 41.
As shown in fig. 3, the horizontal flow groove 42 is separated into two sections of sub-grooves by the rotary valve pin 45, when the rotary valve pin 41 is rotated until the two liquid through holes 47 are respectively directed to the two sub-grooves, the rotary valve pin 41 can seal the whole horizontal flow groove 42, so that the liquid in the liquid storage glass tube 3 cannot flow to the liquid outlet groove 43 through the horizontal flow groove 42, when the rotary valve pin 41 is gradually rotated, the liquid in the liquid storage glass tube 3 can flow from the first section of sub-groove to the second section of sub-groove through the two liquid through holes 47, and finally the liquid flows out from the liquid outlet groove 43, and then a sampling bottle is rotatably arranged on the liquid outlet 44, so that the collection of the discharged liquid can be realized;
before the sampling tube 1 is inserted into the reaction kettle downwards, an external negative pressure source is started firstly, at the moment, the rotary valve pin 41 is rotated, whether the liquid outlet 44 is provided with negative pressure suction force or not is judged by touching the liquid outlet 44 by hand to judge whether the current rotary valve pin 41 is used for plugging the horizontal launder 42, and if the liquid outlet 44 is not provided with negative pressure suction force at the moment, the sampling tube 1 is inserted into the reaction kettle downwards.
In order to specifically show the head-to-tail connection mode of the sampling tube 1, the first cylindrical valve body 2, the liquid storage glass tube 3, the second cylindrical valve body 4 and the third cylindrical valve body 5, the following characteristics are specifically set:
the periphery of stock solution glass pipe 3 is equipped with a plurality of bracing piece 48 along the circumferencial direction evenly distributed of stock solution glass pipe 3, the upper end of every bracing piece 48 all upwards is inconsistent with the bottom of second cylindricality valve body 4, the lower extreme of every bracing piece 48 all downwards is inconsistent with the conflict of first cylindricality valve body 2, the upper and lower both ends distribution shaping of every bracing piece 48 has a connecting rod 49 and No. two connecting rods 50, a connecting rod 49 upwards links to each other second cylindricality valve body 4 and third cylindricality valve body 5, a connecting rod 49 links firmly with first cylindricality valve body 2 downwards, fixedly be equipped with the cover between first cylindricality valve body 2 and the second cylindricality valve body 4 and locate the outer transparent cover 51 of a plurality of bracing piece 48, the upper end of stock solution glass pipe 3 links firmly with the bottom of second cylindricality valve body 4, the lower extreme of stock solution glass pipe 3 stretches into in the upper half of feed tank 6 downwards.
The plurality of support rods 48 are used for supporting the second cylindrical valve body 4 and the third cylindrical valve body 5 above the liquid storage glass tube 3, so that the liquid storage glass tube 3 is prevented from being broken by the weight of the second cylindrical valve body 4 and the third cylindrical valve body 5;
the transparent cover 51 is used for protecting the liquid storage glass tube 3 and preventing the liquid storage glass tube 3 from being broken by external force.
In order to reduce friction between the annular floating plate 12 and the inner wall of the liquid storage glass tube 3 when the annular floating plate is lifted, the following characteristics are specifically set:
the outer wall of the annular floating plate 12 is embedded with two arc-shaped slide guiding strips 52 which are uniformly distributed along the circumferential direction of the annular floating plate 12, and each arc-shaped slide guiding strip 52 is attached to the inner wall of the liquid storage glass tube 3.
The friction force between the rising of the annular floating plate 12 and the inner wall of the liquid storage glass tube 3 is reduced through the two arc-shaped sliding guide strips 52, so that the annular floating plate 12 can stably rise after being subjected to buoyancy.
The application method of the chemical reaction kettle automatic sampling system comprises the following steps:
s1, pumping the negative pressure groove 11, rotating the rotary valve pin 41, and testing whether the horizontal groove 42 is closed or not;
before the sampling tube 1 is inserted into the reaction kettle downwards, an external negative pressure source is started firstly, at the moment, the rotary valve pin 41 is rotated, whether the liquid outlet 44 is provided with negative pressure suction force or not is judged by touching the liquid outlet 44 by hand to judge whether the current rotary valve pin 41 is used for plugging the horizontal launder 42, and if the liquid outlet 44 is not provided with negative pressure suction force at the moment, the sampling tube 1 is inserted into the reaction kettle downwards.
S2, rotating the rotating sleeve 33, observing the position of the threaded sleeve 30 in the liquid storage glass tube 3 through the transparent cover 51, and controlling the distance between the threaded sleeve 30 and the annular floating plate 12;
the liquid amount pumped into the liquid storage glass tube 3 each time needs to be determined according to the sampling amount, when the sampling is finished, if a large amount of liquid is reserved in the liquid storage glass tube 3, the part of liquid can only return into the reaction kettle again, so that the waste of the sampled sample can be caused, and the liquid amount entering the liquid storage glass tube 3 needs to be controlled;
when the annular floating plate 12 rises under the buoyancy of liquid, the annular floating plate 12 rises for a certain distance and then contacts with the interference piece, the vertical rod 13 is driven to rise by the interference piece, the rising of the vertical rod 13 drives the upper blocking body and the lower blocking body to rise, the liquid inlet groove 6 and the negative pressure groove 11 are sealed, and finally the liquid is suspended in the liquid storage glass tube 3, so that the liquid amount entering the liquid storage glass tube 3 can be controlled by changing the distance between the interference piece and the annular floating plate 12;
when the rotating sleeve 33 is manually rotated, the rotating sleeve 33 drives the telescopic rod 34 to rotate through the cooperation of the cutting 38 and the strip-shaped slot 39, the telescopic rod 34 drives the first conical shell 19 to rotate, the first conical shell 19 drives the vertical rod 13 to rotate, the vertical rod 13 drives the threaded sleeve 30 which is in threaded fit with the middle section of the vertical rod 13 to rotate after rotating, and the threaded sleeve 30 can only move up and down along the axial direction of the vertical rod 13 due to the fact that the threaded sleeve 30 is limited to rotate by the two branch strips 31, so that the distance between the threaded sleeve 30 and the annular floating plate 12 is adjusted, and finally the liquid amount flowing into the liquid storage glass tube 3 is controlled by changing the distance between the threaded sleeve 30 and the annular floating plate 12.
S3, inserting the sampling tube 1 into the reaction kettle downwards to extract liquid;
after contacting the annular floating plate 12, the annular floating plate 12 is driven to rise, after the annular floating plate 12 is contacted, the threaded sleeve 30 drives the vertical rod 13 to rise, the vertical rod 13 can drive the upper blocking body and the lower blocking body to rise, in the process, the first conical shell 19 can move upwards towards the conical groove 16, the cylindrical shell 18 can slide upwards in the through groove 8, the second conical shell 20 can move upwards towards the air vent groove 9, then the first conical shell 19 gradually approaches the air vent groove 9 when approaching the conical groove 16 upwards, the opening communicated with the air vent groove 9 and the through groove 8 can be gradually opened, finally, after the first conical shell 19 is completely attached to the conical groove 16 upwards, the opening communicated with the air vent groove 9 and the through groove 8 is completely opened, at the same time, the top of the first conical shell 19 can move upwards towards the conical groove 16, the cylindrical shell 19 can be adsorbed in the through groove 8, the liquid is sucked into the liquid storage groove 6 through the conical groove 16, the liquid storage groove is sucked into the glass groove 6 through the closed groove 6, and the liquid storage groove is sucked into the glass groove 3 through the closed groove 6, and the air pressure is simultaneously, and the liquid is sucked into the glass groove 3 is sealed.
S4, observing whether the liquid level in the liquid storage glass tube 3 rises through the transparent cover 51, and when the liquid level does not rise any more, rotating the rotary valve pin 41 to discharge the liquid and collecting and sampling the discharged liquid.
The horizontal launder 42 can be cut off into two sections of sub-tanks by rotary groove 45, when rotating rotary valve pin 41 to two logical liquid breach 47 respectively towards two sub-tanks, rotary valve pin 41 can be with whole horizontal launder 42 shutoff to this liquid that is located in stock solution glass pipe 3 can not flow to play cistern 43 through horizontal flow tank 42, when rotating rotary valve pin 41 gradually, liquid in the stock solution glass pipe 3 can flow to the second section sub-tank from first section sub-tank through two logical liquid breach 47, finally liquid can flow from play cistern 43, set up a sampling bottle soon on liquid outlet 44 and can realize the collection to the drainage liquid.
The foregoing examples merely illustrate one or more embodiments of the invention, which are described in greater detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (9)
1. An automatic sampling system of a chemical reaction kettle is characterized by comprising a sampling tube (1), a first cylindrical valve body (2), a liquid storage glass tube (3), a second cylindrical valve body (4) and a third cylindrical valve body (5) which are coaxially connected end to end and sequentially distributed from bottom to top along the vertical direction, wherein a liquid inlet groove (6) is coaxially arranged in the first cylindrical valve body (2), a liquid draining groove (7) which is horizontal and communicated with the liquid inlet groove (6) is arranged on the outer wall of the first cylindrical valve body (2), a through groove (8) is coaxially arranged in the second cylindrical valve body (4), a connecting groove (9) which is horizontal and communicated with the through groove (8) is arranged on the outer wall of the second cylindrical valve body (4), a negative pressure groove (11) which is horizontal and communicated with the connecting groove (10) is arranged on the outer wall of the third cylindrical valve body (5), the upper end of the sampling tube (1) is communicated with the lower end of the liquid inlet groove (6), the upper end and the lower end of the liquid storage tube (3) are respectively communicated with the lower end of the through groove (8) and the upper end of the liquid inlet groove (6), a buoyancy valve assembly (3) is arranged on the upper end of the liquid storage tube (8) which is communicated with the upper end of the liquid inlet groove (8), the buoyancy switching subassembly includes annular floating plate (12), go up stifled body, lower stifled body, conflict piece and stop gear, it links to each other through montant (13) to go up the stifled body with lower stifled body, conflict piece is located montant (13), and conflict piece is located the top of annular floating plate (12), annular floating plate (12) slide in stock solution glass pipe (3), and the movable sleeve is located on montant (13), stop gear includes spacing ring (14) and limiting plate (15), spacing ring (14) shaping is in stock solution glass pipe (3), and spacing ring (14) are used for restricting the decline of annular floating plate (12), limiting plate (15) shaping is in the upper end of sampling tube (1), and limiting plate (15) are used for restricting the decline of stifled body down, annular floating plate (12) and last stifled body are hollow out structure, it is used for switching ventilation groove (9) and negative pressure groove (11) to go up the stifled body down and be used for switching to advance cistern (6).
2. The automatic sampling system of a chemical reaction kettle according to claim 1, wherein the connecting groove (10) is sequentially divided into a conical groove (16) and a narrow groove (17) from bottom to top, the small caliber end of the conical groove (16) is upward, the large caliber end of the conical groove (16) is communicated with the upper end of the through groove (8), the narrow groove (17) is vertical and the lower end of the narrow groove is communicated with the small caliber end of the conical groove (16), the diameter of the negative pressure groove (11) is smaller than the diameter of the through groove (8), the upper plug body is a cylindrical shell (18) sliding in the through groove (8), the outer diameter of the cylindrical shell (18) is consistent with the diameter of the through groove (8), the upper end of the cylindrical shell (18) is gradually reduced to a first conical shell (19) which is matched with the conical groove (16), the lower end of the cylindrical shell (18) is gradually reduced to a second conical shell (20), the circumferential surface of the first conical shell (19) is provided with a uniform circumference (21) which is distributed along the circumferential direction, and the circumference of the first conical shell (19) is uniformly distributed along the circumferential direction, and the circumference of the cylindrical shell is uniformly distributed along the circumference of the cylindrical shell (19.
3. The automatic sampling system of a chemical reaction kettle according to claim 1, wherein the lower blocking body is a sealing circular plate (22), the upper half part of the liquid inlet groove (6) is cylindrical, the lower half part of the liquid inlet groove is flaring, the upper end of the sampling pipe (1) is communicated with the lower half part of the liquid inlet groove (6), the limiting plate (15) is circular, the outer diameter of the limiting plate is smaller than the inner diameter of the sampling pipe (1), the top of the limiting plate (15) is provided with a circular groove (23) which is concave downwards and used for accommodating the sealing circular plate (22), a circle of horizontal connecting strips (24) which are uniformly distributed along the circumferential direction of the limiting plate (15) are arranged between the limiting plate (15) and the sampling pipe (1), two ends of each horizontal connecting strip (24) are respectively connected with the outer wall of the limiting plate (15) and the inner wall of the sampling pipe (1), a circular ring (25) is coaxially formed in the upper half part of the liquid inlet groove (6), the center of the circular ring (25) is a liquid inlet (26), and the lower end of the vertical rod (13) passes downwards through the liquid inlet (26) and is coaxially fixedly connected with the top of the sealing circular plate (22).
4. The automatic sampling system of a chemical reaction kettle according to claim 1, wherein the annular floating plate (12) is of a hollow structure, a plurality of strip-shaped ventilation grooves (27) uniformly distributed along the circumferential direction of the annular floating plate (12) are formed in the annular floating plate (12), two limiting strips (28) uniformly distributed along the circumferential direction of the liquid storage glass tube (3) are formed in the inner wall of the liquid storage glass tube (3), the length direction of each limiting strip (28) is parallel to the axial direction of the liquid storage glass tube (3), and two limiting grooves (29) which are respectively in sliding fit with the two limiting strips (28) are formed in the circumferential wall of the annular floating plate (12).
5. The automatic sampling system of chemical reaction kettle according to claim 2, wherein the middle section of the vertical rod (13) is of a threaded structure, the abutting piece is a threaded sleeve (30) rotationally arranged on the middle section of the vertical rod (13), two supporting strips (31) uniformly distributed along the circumferential direction of the threaded sleeve (30) are formed on the outer wall of the threaded sleeve (30), a sliding groove (32) which is in sliding fit with the corresponding limiting strip (28) is formed at one end of each supporting strip (31), a rotating piece is arranged above the first conical shell (19), the rotating piece comprises a rotating sleeve (33) and a telescopic rod (34), the top of the third cylindrical valve body (5) is internally provided with a stepped groove (35), the diameter of the lower half part of the stepped groove (35) is smaller than that of the upper half part of the stepped groove, the lower half part of the stepped groove (35) is communicated with the upper end of the narrow groove (17), two first sealing sleeves (37) uniformly distributed along the axial direction of the stepped groove (35) are fixedly arranged in the cylindrical sleeve (36), the upper half part of the stepped groove (35) is fixedly provided with two first sealing sleeves (37) which are fixedly connected with the upper end of the first conical shell (33) which is fixedly connected with the upper end of the upper conical shell (33) of the third cylindrical valve body (33) and the upper end (33) which is fixedly connected with the upper end of the upper conical shell (33), the upper end of the telescopic rod (34) is inserted into the lower end of the rotating sleeve (33) upwards, two cutting strips (38) which are uniformly distributed along the circumferential direction of the rotating sleeve (33) are formed on the inner wall of the lower end of the rotating sleeve (33), the length direction of each cutting strip (38) is parallel to the axial direction of the rotating sleeve (33), and two strip-shaped slots (39) which are matched with the two cutting strips (38) respectively are formed in the outer wall of the upper end of the telescopic rod (34).
6. The automatic sampling system of a chemical reaction kettle according to claim 1, wherein the control valve comprises a rectangular valve body (40) and a rotary valve pin (41), a horizontal flow groove (42) and a liquid outlet groove (43) are formed in the rectangular valve body (40), one end of the horizontal flow groove (42) is communicated with the liquid outlet groove (7), the liquid outlet groove (43) is vertical and the upper end of the liquid outlet groove is communicated with the other end of the horizontal flow groove (42), the bottom of the rectangular valve body (40) is communicated with the lower end of the liquid outlet groove (43), so that a liquid outlet (44) is formed, a rotary groove (45) transversely penetrating through the middle section of the horizontal flow groove (42) is formed in the rectangular valve body (40), the rotary valve pin (41) rotates in the rotary groove (45), a second sealing bearing (46) for enabling the rotary valve pin (41) to rotate and preventing gas from entering and exiting is formed in the rotary valve pin (45), and two liquid through gaps (47) are formed in the rotary valve pin (41) and evenly distributed along the circumferential direction of the rotary valve pin (41).
7. The automatic sampling system of a chemical reaction kettle according to claim 3, wherein a plurality of supporting rods (48) uniformly distributed along the circumferential direction of the liquid storage glass tube (3) are arranged on the periphery of the liquid storage glass tube (3), the upper end of each supporting rod (48) is in upward collision with the bottom of the second cylindrical valve body (4), the lower end of each supporting rod (48) is in downward collision with the bottom of the first cylindrical valve body (2), a first connecting rod (49) and a second connecting rod (50) are distributed at the upper end and the lower end of each supporting rod (48), the first connecting rod (49) is used for connecting the second cylindrical valve body (4) with the third cylindrical valve body (5) upward, the first connecting rod (49) is fixedly connected with the first cylindrical valve body (2) downward, a transparent cover (51) sleeved outside the plurality of the supporting rods (48) is fixedly arranged between the first cylindrical valve body (2) and the second cylindrical valve body (4), and the upper end of the liquid storage glass tube (3) is fixedly connected with the bottom of the second cylindrical valve body (4), and the lower end of the liquid storage glass tube (3) downwardly extends into the upper half part of the liquid inlet groove (6).
8. The automatic sampling system of a chemical reaction kettle according to claim 4, wherein two arc-shaped slide guiding strips (52) uniformly distributed along the circumferential direction of the annular floating plate (12) are embedded on the outer wall of the annular floating plate (12), and each arc-shaped slide guiding strip (52) is attached to the inner wall of the liquid storage glass tube (3).
9. A method for using an automatic sampling system of a chemical reaction kettle, comprising the automatic sampling system of the chemical reaction kettle as claimed in claim 1, characterized in that the method comprises the following steps:
s1, sucking air from a negative pressure groove (11), rotating a rotary valve pin (41) and testing whether a horizontal groove (42) is closed or not;
s2, rotating the rotating sleeve (33), observing the position of the threaded sleeve (30) in the liquid storage glass tube (3) through the transparent cover (51), and controlling the distance between the threaded sleeve (30) and the annular floating plate (12);
s3, inserting the sampling tube (1) into the reaction kettle downwards to extract liquid;
s4, observing whether the liquid level in the liquid storage glass tube (3) rises through the transparent cover (51), and when the liquid level does not rise any more, rotating the rotary valve pin (41) to discharge the liquid and collecting and sampling the discharged liquid.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117554556A (en) * | 2024-01-12 | 2024-02-13 | 佳木斯大学 | Gastric juice acidity detection device for digestive system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117554556A (en) * | 2024-01-12 | 2024-02-13 | 佳木斯大学 | Gastric juice acidity detection device for digestive system |
| CN117554556B (en) * | 2024-01-12 | 2024-05-10 | 佳木斯大学 | Gastric juice acidity detection device for digestive system |
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