CN115876561A - Sample liquid level detection device for parallel concentration instrument - Google Patents
Sample liquid level detection device for parallel concentration instrument Download PDFInfo
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- CN115876561A CN115876561A CN202310213209.5A CN202310213209A CN115876561A CN 115876561 A CN115876561 A CN 115876561A CN 202310213209 A CN202310213209 A CN 202310213209A CN 115876561 A CN115876561 A CN 115876561A
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Abstract
The invention discloses a sample liquid level detection device for a parallel concentrator, which comprises a box body, wherein a water bath is arranged in the box body, a nitrogen blowing frame is rotatably arranged on the water bath, a nitrogen blowing mechanism is connected in the nitrogen blowing frame, the nitrogen blowing mechanism comprises a driving assembly, the driving assembly is used for controlling the nitrogen blowing mechanism to fold and lift, so that the concentration efficiency of a concentration bottle is improved, a floating ball catching and releasing mechanism is arranged on the nitrogen blowing frame, the concentration process is accurately controlled by combining with a measurement floating ball, meanwhile, the measurement floating ball can be controlled to enter the water bath to be cleaned when the concentration is finished, so that the concentration bottle can be repeatedly used next time, a liquid level detection mechanism is arranged in the water bath, the liquid level detection mechanism also comprises a height adjusting assembly, the height of an optical fiber sensor is rapidly adjusted by using the height adjusting assembly, the concentration requirements of different liquids are met, the height adjusting assembly is connected with a lifting assembly, the concentration bottle after the concentration is lifted by using the lifting assembly, and the concentration bottle can be conveniently taken out.
Description
Technical Field
The invention relates to the technical field of concentration equipment, in particular to sample liquid level detection equipment for a parallel concentrator.
Background
In the fields of environmental pollutants, food safety analysis and the like, in order to obtain the target residue, a sample to be detected needs to be pretreated, and the process mainly comprises the basic steps of sample extraction (extraction), concentration, purification, reconcentration and the like. Wherein, how to concentrate quickly without introducing impurities is a key step. The solution is composed of solute and solvent, the concentration of the solution is that the solvent in the solution is evaporated, the volume of the solution is reduced, the solute concentration of the solution rises, the evaporation speed of the solvent in the solution is influenced by factors such as temperature, surface area and air flow, a nitrogen blowing instrument is generally used for concentrating the solution, the gas-liquid balance above the solution is destroyed by the rapid flow of nitrogen, the volatilization speed of the solution is accelerated, the temperature is raised by dry heating or water bath heating, the purpose of oxygen-free concentration is achieved, and the purity of the concentrated sample can be kept.
The concentrator in the prior art is large in size, a concentration end point is judged through a capillary optical fiber sensor, the capillary optical fiber sensor is influenced by factors such as attenuation of light source energy, deformation of the capillary optical fiber, cleanliness of a concentration cup and cleanliness of a heating medium in the using process, so that a light emitting device and a light receiving device of the capillary optical fiber sensor cannot work accurately, faults such as false alarm or no alarm are prone to occurring during use, and the accurate concentration degree of solution cannot be obtained.
Disclosure of Invention
The present invention is directed to a sample level detection device for a parallel concentration apparatus, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
a sample liquid level detection device for a parallel concentrator comprises a box body, wherein a water bath is arranged in the box body, a nitrogen blowing frame is rotatably arranged on the water bath, a separation frame and a bracket are arranged in the water bath, concentration bottles are uniformly placed between the separation frame and the bracket and comprise large-diameter sections and small-diameter sections, an inner groove is arranged in the nitrogen blowing frame, an air supply pipe is arranged in the inner groove and connected with a nitrogen blowing mechanism, a floating ball catching and releasing mechanism is arranged on the nitrogen blowing frame, a heating component is arranged in the water bath, and a liquid level detection mechanism is arranged in the water bath;
the floating ball grabbing and releasing mechanism comprises a second driving motor fixed in an inner groove, the second driving motor is connected with a driving rod, winding drums are uniformly arranged on the driving rod, pull ropes are wound on the winding drums, an installation rod parallel to the driving rod is arranged in the inner groove, the height of the installation rod is lower than that of the driving rod, a guide drum is arranged on the installation rod, the pull ropes are arranged in the guide drum in an extending mode, the guide drum is arranged in a horn shape, a floating ball adsorption block is arranged at the tail end of each pull rope, the floating ball adsorption block and a measuring floating ball are adsorbed mutually, and the tail end of the guide drum is arranged right above the concentration bottle;
the liquid level detection mechanism comprises an optical fiber sensor arranged in a water bath tank, the optical fiber sensor is arranged on the side edge of the small-diameter section of the concentration bottle, the optical fiber sensor is connected with a movable frame, and the movable frame is connected with a height adjusting assembly.
As a further scheme of the invention: nitrogen blows the adjustable shelf in the mechanism recess including setting up, the adjustable shelf symmetry sets up the both sides below at the air supply pipe, the tip of inner groovy is provided with the groove of sliding, slidable mounting between adjustable shelf and the groove of sliding, be provided with the cylinder section on the adjustable shelf, it installs the rotating turret to rotate on the cylinder section, the end of rotating turret rotates and is connected with the lifter, be provided with the folded tube between lifter and the air supply pipe, be provided with the gas outlet on the lifter, the gas outlet is just to concentrated bottle, nitrogen blows the mechanism and still includes drive assembly.
As a still further scheme of the invention: drive assembly is including setting up the rhombus folding leg in the adjustable shelf bottom, two articulated shafts fixed mounting that the rhombus folding leg is in on the perpendicular adjustable shelf position are on the adjustable shelf, the parallel adjustable shelf direction of rhombus folding leg is provided with the installation piece, it is articulated between rhombus folding leg and the installation piece, the air supply pipe below is provided with the mounting bracket, the fixed driving motor that is provided with one on the mounting bracket, driving motor is connected with two-way lead screw, two-way lead screw respectively with install between the piece threaded connection.
As a still further scheme of the invention: heating element is including setting up the heating rod around the concentrated bottle, the ninety degrees settings in heating rod uniform interval, the inboard of removing the frame is provided with the installation cover, cup joint between installation cover and the heating rod.
As a still further scheme of the invention: the liquid level detection mechanism further comprises a height adjusting assembly, the height adjusting assembly comprises a sleeve arranged between the separation frame and the bracket, the sleeve is fixedly connected with the bracket, the upper end of the sleeve is provided with a cylindrical disc, a semicircular handle is installed in the cylindrical disc in a rotating mode, the cylindrical disc is connected with a threaded rod, a lifting sleeve is arranged in the sleeve, guide convex strips are evenly arranged on the inner wall of the sleeve, guide grooves matched with the guide convex strips are formed in the lifting sleeve, the threaded rod is connected with the lifting sleeve in a threaded mode, the bottom of the lifting sleeve is provided with a connecting disc, the connecting disc is provided with a connecting frame, and the connecting frame is fixedly connected with the mounting sleeve.
As a still further scheme of the invention: the water bath is provided with the lifting assembly in the groove, the lifting assembly is including setting up the bottom plate in the bracket bottom, be provided with the stop collar on the bottom plate, the threaded rod passes the connection pad bottom and is provided with the extension section, the end of extension section is provided with the cooperation piece, rotate the installation between cooperation piece and the stop collar.
As a still further scheme of the invention: the measuring device comprises a measuring floating ball, and is characterized in that an iron block is arranged at one end of the measuring floating ball, the iron block is embedded in the measuring floating ball, a balancing weight is arranged at one end, away from the iron block, of the measuring floating ball, and the measuring floating ball is made of rubber.
As a still further scheme of the invention: the guide cylinder comprises a wide-mouth end and a narrow-mouth end, the diameter of the measuring floating ball is larger than that of the wide-mouth end of the guide cylinder, and the diameter of the floating ball adsorption block is smaller than that of the wide-mouth end of the guide cylinder and larger than that of the narrow-mouth end of the guide cylinder.
Compared with the prior art, the invention has the beneficial effects that:
(1) The height of the air outlet is adjusted through the nitrogen blowing mechanism and the driving assembly, the nitrogen blowing concentration efficiency can be improved, and meanwhile, the air outlet can be retracted and folded after the concentration is finished, so that a concentration bottle in the water bath tank can be conveniently taken out;
(2) The floating ball grabbing and releasing mechanism is arranged to grab and release a measuring floating ball involved in liquid level measurement in the concentration bottle, so that the grabbing and releasing efficiency of the floating ball is improved while the concentration process is accurately controlled, the inconvenience caused by manual grabbing and releasing is saved, meanwhile, the measuring floating ball can be controlled to enter a water bath tank for cleaning after concentration is completed, the device is convenient to continue to use when the next concentration is carried out, and the introduction of impurities into the liquid concentrated next time can be avoided;
(3) The height of optical fiber sensor can be adjusted fast to the height adjustment subassembly that combines among the liquid level detection mechanism to adapt to different concentrated demands, and the threaded rod end in the height adjustment subassembly sets up the extension section and connects the bottom plate, and cooperation semicircle handle can promote the bottom plate, can promote concentrated bottle when accomplishing the concentration, is convenient for take out concentrated bottle from the water bath tank.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view showing an internal structure of the water bath in the present invention.
FIG. 3 is a schematic structural view of a nitrogen blowing frame according to the present invention.
FIG. 4 is a schematic structural view of a nitrogen blowing mechanism according to the present invention.
FIG. 5 is a schematic structural diagram of a driving assembly of the nitrogen blowing mechanism of the present invention.
FIG. 6 is a schematic view of the floating ball catching and releasing mechanism of the present invention.
FIG. 7 is a schematic view of the installation of the liquid level detection mechanism of the present invention.
FIG. 8 is an enlarged schematic view of a height adjustment assembly of the fluid level detection mechanism of the present invention.
FIG. 9 is a schematic view of the structure of the measuring float according to the present invention.
In the figure: 1. a box body; 2. nitrogen is blown to the frame; 20. an inner groove; 21. a sliding groove; 3. a concentration bottle; 30. a spacer; 31. a bracket; 32. a base plate; 33. a water bath; 34. a heating rod; 4. a nitrogen blowing mechanism; 40. a movable frame; 41. a cylindrical section; 42. a gas supply pipe; 43. folding the tube; 44. a rotating frame; 45. a lifting rod; 46. an air outlet; 5. a drive assembly; 50. a mounting frame; 51. driving a motor I; 52. a bidirectional screw rod; 53. a rhombus folding leg; 54. mounting blocks; 6. a floating ball catching and releasing mechanism; 60. a drive rod; 61. winding the reel; 62. a second driving motor; 63. pulling a rope; 64. mounting a rod; 65. a guide cylinder; 66. a floating ball adsorption block; 7. a height adjustment assembly; 70. a sleeve; 701. a guide convex strip; 702. a lifting sleeve; 703. a guide groove; 704. a threaded rod; 71. a connecting disc; 72. a movable frame; 73. installing a sleeve; 74. an optical fiber sensor; 75. an extension section; 750. a matching block; 751. a limiting sleeve; 76. a cylindrical disk; 760. a semicircular handle; 77. a connecting frame; 8. measuring a floating ball; 80. an iron block; 81. and a balancing weight.
Detailed Description
In the description of the present invention, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
As shown in fig. 1, 2, 3, 6, and 7, a sample liquid level detection device for a parallel concentration instrument includes a box 1, a water bath 33 is provided in the box 1, a nitrogen blowing frame 2 is rotatably installed on the water bath 33, a separation frame 30 and a bracket 31 are provided in the water bath 33, concentration bottles 3 are uniformly placed between the separation frame 30 and the bracket 31, each concentration bottle 3 includes a large diameter section and a small diameter section, an inner groove 20 is provided in the nitrogen blowing frame 2, an air supply pipe 42 is installed in the inner groove 20, the air supply pipe 42 is connected to a nitrogen blowing mechanism 4, a floating ball catching and releasing mechanism 6 is provided on the nitrogen blowing frame 2, a heating component is provided in the water bath 33, and a liquid level detection mechanism is provided in the water bath 33;
as shown in fig. 6, the floating ball catching and releasing mechanism 6 includes a second driving motor 62 fixed in the inner groove 20, the second driving motor is connected to a driving rod 60, winding drums 61 are uniformly arranged on the driving rod 60, pull ropes 63 are wound on the winding drums 61, mounting rods 64 parallel to the driving rod 60 are arranged in the inner groove 20, the height of the mounting rods 64 is lower than that of the driving rod 60, guide drums 65 are arranged on the mounting rods 64, the pull ropes 63 are extended into the guide drums 65, the guide drums 65 are arranged in a horn shape, floating ball adsorption blocks 66 are arranged at the tail ends of the pull ropes 63, the floating ball adsorption blocks 66 and the measuring floating balls 8 are adsorbed with each other, and the tail ends of the guide drums 65 are arranged right above the concentration bottle 3;
as shown in fig. 7, the liquid level detection mechanism includes an optical fiber sensor 74 disposed in the water bath 33, the optical fiber sensor 74 is disposed at a side of the small diameter section of the concentration bottle 3, the optical fiber sensor 74 is connected to a moving frame 72, and the moving frame 72 is connected to the height adjustment assembly 7.
Specifically, nitrogen is sent into the nitrogen blowing frame 2 through the air supply pipe 42, the nitrogen is sent into the concentration bottles 3 on the separation frame 30 and the bracket 31 respectively by combining the nitrogen blowing mechanism 4, solution concentration is carried out, during concentration, the measurement floating ball 8 adsorbed on the floating ball adsorption block 66 is loosened by the floating ball grabbing and releasing mechanism 6, so that the measurement floating ball 8 falls into the concentration bottles 3, the liquid level height gradually descends along with continuous concentration, when the measurement floating ball 8 of the liquid level reaches the position of the optical fiber sensor 74, the optical path is blocked, photoelectric signals are caused to change, the data acquisition card receives the changed photoelectric signals and sends a stop signal to the nitrogen blowing mechanism 4, and the nitrogen blowing concentration process is stopped.
Further, as shown in fig. 3 and 4, the nitrogen blowing mechanism 4 includes a movable frame 40 disposed in the inner groove 20, the movable frame 40 is symmetrically disposed below two sides of the air supply pipe 42, the end portion of the inner groove 20 is provided with a sliding groove 21, the movable frame 40 and the sliding groove 21 are slidably mounted, the movable frame 40 is provided with a cylindrical section 41, a rotating frame 44 is rotatably mounted on the cylindrical section 41, the end of the rotating frame 44 is rotatably connected with a lifting rod 45, a folding pipe 43 is disposed between the lifting rod 45 and the air supply pipe 42, the lifting rod 45 is provided with an air outlet 46, the air outlet 46 is right aligned to the concentration bottle 3, and the nitrogen blowing mechanism 4 further includes a driving assembly 5.
Specifically, through set up the groove 21 of sliding in inner groove 20, the symmetry sets up adjustable shelf 40, combine the drive assembly 5 that sets up between the adjustable shelf 40, control interval between the adjustable shelf 40, thereby make the cylinder section 41 that links to each other with adjustable shelf 40 drive the swing of rotating turret 44, and then make the lifter 45 of rotating turret 44 end-to-end connection rise or descend, control adjustable shelf 40 is close to each other when concentrating, make folding tube 43 descend, gas outlet 46 stretches into in the concentration bottle 3, promote concentration efficiency.
Further, as shown in fig. 5, the driving assembly 5 includes a rhombic folding frame 53 disposed at the bottom of the movable frame 40, the rhombic folding frame 53 is disposed on the movable frame 40 perpendicular to two hinge shafts fixedly disposed on the position of the movable frame 40, an installation block 54 is disposed in the direction of the movable frame 40 parallel to the rhombic folding frame 53, the rhombic folding frame 53 is hinged to the installation block 54, the installation frame 50 is disposed below the air supply pipe 42, a first driving motor 51 is fixedly disposed on the installation frame 50, the driving motor is connected with a bidirectional screw rod 52, and the bidirectional screw rod 52 is respectively connected with the installation block 54 through threads.
Specifically, the rhombic folding frames 53 are arranged between the movable frames 40, and the two-way screw rods 52 are driven to rotate by the driving motor II 62 fixedly mounted on the air supply pipe 42, so that the mounting blocks 54 at the two ends of the rhombic folding frames 53 are close to or separated from each other, the movable frames 40 connected with the rhombic folding frames are controlled to be opened or close to each other, and the nitrogen blowing mechanism 4 is controlled to extend into the concentration bottle 3 or be folded and retracted.
Further, as shown in fig. 7, the heating assembly includes heating rods 34 disposed around the concentrating bottle 3, the heating rods 34 are disposed at regular intervals of ninety degrees, and a mounting sleeve 73 is disposed on the inner side of the moving frame 72, and the mounting sleeve 73 is sleeved with the heating rods 34.
Specifically, the optical fiber sensor 74 is connected to the movable frame 72, and the installation sleeve 73 and the heating rod 34 are movably installed, so that the height of the optical fiber sensor 74 can be conveniently adjusted to adapt to concentration degrees under different requirements.
Further, as shown in fig. 8, the liquid level detection mechanism further includes a height adjustment assembly 7, the height adjustment assembly 7 includes a sleeve 70 disposed between the separation frame 30 and the bracket 31, the sleeve 70 is fixedly connected with the bracket 31, a cylindrical disc 76 is disposed at the upper end of the sleeve 70, a semicircular handle 760 is rotatably mounted in the cylindrical disc 76, the cylindrical disc 76 is connected with a threaded rod 704, a lifting sleeve 702 is disposed in the sleeve 70, guide protruding strips 701 are uniformly disposed on the inner wall of the sleeve 70, a guide groove 703 mutually matched with the guide protruding strips 701 is disposed on the lifting sleeve 702, the threaded rod 704 is in threaded connection with the lifting sleeve 702, a connection disc 71 is disposed at the bottom of the lifting sleeve 702, a connection frame 77 is disposed on the connection disc 71, and the connection frame 77 is fixedly connected with the mounting sleeve 73.
Specifically, the sleeve 70 is arranged between the separation frame 30 and the bracket 31, the lifting sleeve 702 and the threaded rod 704 are installed by using the sleeve 70, the threaded rod 704 is in threaded connection with the lifting sleeve 702, and the lifting sleeve 702 can be lifted up and down between the sleeve 70 and the threaded rod 704 by rotating the threaded rod 704 under the driving of the semicircular handle 760 in the top cylindrical disc 76, so as to drive the connecting disc 71, the connecting frame 77 and the moving frame 72 to be lifted up and down, thereby adjusting the height of the optical fiber sensor 74.
Further, as shown in fig. 7, a lifting assembly is arranged in the water bath 33, the lifting assembly includes a bottom plate 32 arranged at the bottom of the bracket 31, a limit sleeve 751 is arranged on the bottom plate 32, the threaded rod 704 passes through the bottom of the connecting disc 71 and is provided with an extension section 75, a matching block 750 is arranged at the tail end of the extension section 75, and the matching block 750 and the limit sleeve 751 are rotatably mounted.
Specifically, accomplish concentrated back at concentrated bottle 3, in order to facilitate taking out concentrated bottle 3, set up extension section 75 through the bottom extension at threaded rod 704, utilize the extension end to set up bottom plate 32, after accomplishing concentrated operation, pulling semicircle handle 760, promote threaded rod 704 for bottom plate 32 rebound, lift concentrated bottle 3, thereby be convenient for take out concentrated bottle 3 after the concentration.
Further, as shown in fig. 9, an iron block 80 is disposed at one end of the measurement floating ball 8, the iron block 80 is embedded in the measurement floating ball 8, a counterweight 81 is disposed at one end of the measurement floating ball 8 far away from the iron block 80, and the measurement floating ball 8 is made of rubber.
Specifically, set up iron plate 80 on measuring the floater 8, set up balancing weight 81 on the floater simultaneously for the floater is in balancing weight 81 downwards all the time, and the ascending gesture of iron plate 80 floats in concentrated bottle 3, transfers floater adsorption block 66 and can adsorb the measurement floater 8 after accomplishing the concentration.
Further, as shown in fig. 6, the guide cylinder 65 includes a wide end and a narrow end, the diameter of the measuring float 8 is greater than the diameter of the wide end of the guide cylinder 65, and the diameter of the float adsorption block 66 is smaller than the diameter of the wide end of the guide cylinder 65 and greater than the diameter of the narrow end of the guide cylinder 65.
Specifically, the diameter of measuring the floater 8 is greater than the opening diameter of guide cylinder 65, and the diameter of floater adsorption block 66 is less than the wide-mouth end diameter of guide cylinder 65 and is greater than the narrow-mouth end diameter of guide cylinder 65, can make floater adsorption block 66 adsorb after measuring floater 8, make the floater stop near guide cylinder 65 position, when the floater 8 is measured in the release of needs simultaneously, control continues rolling stay cord 63 around reel 61, make floater adsorption block 66 get into inside the guide cylinder 65, make floater adsorption block 66 separate with measure floater 8, thereby make to measure in the concentrate bottle 3 that floater 8 fell into the bottom, participate in concentrated level measurement.
The working principle of the embodiment of the invention is as follows:
as shown in fig. 1 to 9, the concentration bottle 3 is placed between the separation frame 30 and the bracket 31, the nitrogen blowing frame 2 is covered, the driving assembly 5 is controlled to enable the rhombic folding frames 53 to approach each other, further enable the movable frames 40 connected with the rhombic folding frames 53 to approach each other, the cylindrical section 41 coaxially connected with the movable frames 40 drives the rotating frame 44 to approach, the lifting rod 45 at the tail end of the rotating frame 44 extends into the concentration bottle 3, then the floating ball catching and releasing mechanism 6 is controlled to move, so that the floating ball adsorption block 66 and the measuring floating ball 8 are separated from each other, and the measuring floating ball 8 falls into the concentration bottle 3; the height of the liquid level detection mechanism is controlled through the height adjusting assembly 7, so that the concentration degree is controlled, the threaded rod 704 is rotated by using the semicircular handle 760 in the cylindrical disc 76, the threaded rod 704 drives the lifting sleeve 702 to lift in the sleeve 70, the connecting frame 77 connected with the connecting disc 71 and the moving frame 72 are driven to lift on the heating rod 34, so that the height of the optical fiber sensor 74 installed in the moving frame 72 relative to the small-diameter section of the concentration bottle 3 is adjusted, the concentration degree of the solution is controlled, the nitrogen gas supply to the air supply pipe 42 is stopped after the concentration is finished, the winding drum 61 is driven to release the pull rope 63, the floating ball adsorption block 66 falls into the concentration bottle 3, and the measurement floating ball 8 is adsorbed and lifted to the position of the guide drum 65; then pulling the semicircular handle 760 to lift the bottom plate 32, so that the concentration bottle 3 is lifted, and taking out the concentration bottle 3; the floating ball grabbing mechanism is continuously controlled to release the pull rope 63, so that the floating ball adsorption block 66 drives the measurement floating ball 8 to fall into the water bath 33, the measurement floating ball 8 is cleaned, and impurities are prevented from being brought in when the subsequent measurement floating ball 8 participates in the concentration process.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (8)
1. The sample liquid level detection device for the parallel concentrator comprises a box body (1), wherein a water bath (33) is arranged in the box body (1), a nitrogen blowing frame (2) is rotatably arranged on the water bath (33), a separation frame (30) and a bracket (31) are arranged in the water bath (33), a concentration bottle (3) is uniformly placed between the separation frame (30) and the bracket (31), and the concentration bottle (3) comprises a large-diameter section and a small-diameter section, and is characterized in that an inner groove (20) is arranged in the nitrogen blowing frame (2), an air supply pipe (42) is arranged in the inner groove (20), the air supply pipe (42) is connected with a nitrogen blowing mechanism (4), a floating ball catching and releasing mechanism (6) is arranged on the nitrogen blowing frame (2), a heating component is arranged in the water bath (33), and a liquid level detection mechanism is arranged in the water bath (33);
the floating ball grabbing and releasing mechanism (6) comprises a second driving motor (62) fixed in an inner groove (20), the second driving motor is connected with a driving rod (60), winding drums (61) are uniformly arranged on the driving rod (60), pull ropes (63) are wound on the winding drums (61), mounting rods (64) parallel to the driving rod (60) are arranged in the inner groove (20), the height of the mounting rods (64) is lower than that of the driving rod (60), guide cylinders (65) are arranged on the mounting rods (64), the pull ropes (63) are arranged in the guide cylinders (65) in an extending mode, the guide cylinders (65) are arranged in a horn shape, floating ball adsorption blocks (66) are arranged at the tail ends of the pull ropes (63), the floating ball adsorption blocks (66) and the measuring floating balls (8) are adsorbed to each other, and the tail ends of the guide cylinders (65) are arranged right above the concentration bottle (3);
the liquid level detection mechanism comprises an optical fiber sensor (74) arranged in a water bath (33), the optical fiber sensor (74) is arranged on the side edge of the small-diameter section of the concentration bottle (3), the optical fiber sensor (74) is connected with a movable frame (72), and the movable frame (72) is connected with a height adjusting assembly (7).
2. The sample liquid level detection device for the parallel concentration instrument is characterized in that the nitrogen blowing mechanism (4) comprises a movable frame (40) arranged in an inner groove (20), the movable frame (40) is symmetrically arranged below two sides of an air supply pipe (42), a sliding groove (21) is arranged at the end part of the inner groove (20), the movable frame (40) and the sliding groove (21) are slidably mounted, a cylindrical section (41) is arranged on the movable frame (40), a rotating frame (44) is rotatably mounted on the cylindrical section (41), a lifting rod (45) is rotatably connected to the tail end of the rotating frame (44), a folding pipe (43) is arranged between the lifting rod (45) and the air supply pipe (42), an air outlet (46) is arranged on the lifting rod (45), the air outlet (46) is opposite to the concentration bottle (3), and the nitrogen blowing mechanism (4) further comprises a driving assembly (5).
3. The sample liquid level detection device for the parallel concentration instrument is characterized in that the driving assembly (5) comprises a rhombic folding frame (53) arranged at the bottom of the movable frame (40), two hinged shafts of the rhombic folding frame (53) at the position of the vertical movable frame (40) are fixedly arranged on the movable frame (40), a mounting block (54) is arranged in the direction of the rhombic folding frame (53) parallel to the movable frame (40), the rhombic folding frame (53) is hinged to the mounting block (54), a mounting frame (50) is arranged below the air supply pipe (42), a first driving motor (51) is fixedly arranged on the mounting frame (50), the driving motor is connected with a bidirectional screw rod (52), and the bidirectional screw rod (52) is in threaded connection with the mounting block (54).
4. The sample level detection device for the parallel concentrator according to claim 1, wherein the heating assembly comprises heating rods (34) arranged around the concentrating bottle (3), the heating rods (34) are uniformly arranged at intervals of ninety degrees, the inner side of the moving frame (72) is provided with a mounting sleeve (73), and the mounting sleeve (73) is sleeved with the heating rods (34).
5. The sample liquid level detection device for the parallel concentration instrument is characterized in that the liquid level detection mechanism further comprises a height adjustment assembly (7), the height adjustment assembly (7) comprises a sleeve (70) arranged between the separation frame (30) and the bracket (31), the sleeve (70) is fixedly connected with the bracket (31), a cylindrical disc (76) is arranged at the upper end of the sleeve (70), a semicircular handle (760) is rotatably installed in the cylindrical disc (76), a threaded rod (704) is connected to the cylindrical disc (76), a lifting sleeve (702) is arranged in the sleeve (70), guide convex strips (701) are uniformly arranged on the inner wall of the sleeve (70), guide grooves (703) matched with the guide convex strips (701) are formed in the lifting sleeve (702), the threaded rod (704) is in threaded connection with the lifting sleeve (702), a connecting disc (71) is arranged at the bottom of the lifting sleeve (702), a connecting frame (77) is arranged on the connecting disc (71), and the connecting frame (77) is fixedly connected with the mounting sleeve (73).
6. The sample liquid level detection device for the parallel concentrator is characterized in that a lifting assembly is arranged in the water bath (33), the lifting assembly comprises a bottom plate (32) arranged at the bottom of the bracket (31), a limiting sleeve (751) is arranged on the bottom plate (32), the threaded rod (704) penetrates through the bottom of the connecting plate (71) and is provided with an extension section (75), the tail end of the extension section (75) is provided with a matching block (750), and the matching block (750) and the limiting sleeve (751) are rotatably installed.
7. The sample liquid level detection device for the parallel concentration instrument is characterized in that an iron block (80) is arranged at one end of the measurement floating ball (8), the iron block (80) is embedded in the measurement floating ball (8), a balancing weight (81) is arranged at one end, far away from the iron block (80), of the measurement floating ball (8), and the measurement floating ball (8) is made of rubber.
8. The sample level detection device for the parallel concentrator as claimed in claim 7, wherein the guide cylinder (65) comprises a wide end and a narrow end, the diameter of the measurement floating ball (8) is larger than that of the wide end of the guide cylinder (65), and the diameter of the floating ball adsorption block (66) is smaller than that of the wide end of the guide cylinder (65) and larger than that of the narrow end of the guide cylinder (65).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310213209.5A CN115876561B (en) | 2023-03-08 | 2023-03-08 | Sample liquid level detection equipment for parallel concentrator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310213209.5A CN115876561B (en) | 2023-03-08 | 2023-03-08 | Sample liquid level detection equipment for parallel concentrator |
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| CN115876561B CN115876561B (en) | 2023-05-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116474389A (en) * | 2023-04-14 | 2023-07-25 | 硕邦(湖州)生物医药科技有限公司 | Preparation process of high-purity hydroxypropyl tetrahydropyran triol |
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| CN118087629A (en) * | 2024-04-22 | 2024-05-28 | 广东裕恒工程检测技术有限责任公司 | Foundation pile detection fixing device for engineering detection |
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| CN115876561B (en) | 2023-05-09 |
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