Automatic mixing and sample adding device

Abstract

The invention discloses an automatic mixing and sample adding device, and belongs to the field of chemical instruments.The automatic mixing and sample adding device comprises a placement base, supporting shafts are fixedly connected to the four corners of the upper surface of the placement base, a top plate is fixedly connected to the tops of the supporting shafts, and a pretreatment assembly used for mixing samples is arranged in the top plate; the pretreatment assembly is provided with a feeding assembly capable of accurately controlling the flow. A liquid sample can enter a movable sleeve through a liquid inlet and is continuously pushed and scattered by a rotating material pushing plate, so that a plurality of falling liquid samples are preliminarily mixed in a pretreatment bin, and when the liquid is subjected to pre-mixing treatment and pre-stirring, less time is conveniently needed for subsequent sample treatment to operate; through premixing, uniform distribution of different components in a sample can be ensured, and nonuniformity of the components is reduced, so that errors in subsequent experiments or analysis are reduced, the time of one-by-one sample adding in the subsequent experiments can be shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of chemical instruments, and more particularly to an automatic mixing and adding sample device. Background Art

[0002] In many fields such as scientific research, drug development, chemical analysis and food manufacturing, the accurate mixing and adding of liquid samples is the key to the success of the experiment.

[0003] Traditional manual mixing and sample addition methods are not only inefficient, but also easily affected by human factors, resulting in uneven sample mixing and inaccurate sample addition, which has a negative impact on the reproducibility and reliability of experimental results.

[0004] In view of the above problems, the prior art has also proposed some solutions. For example, a Chinese patent with authorization announcement number CN216082791U discloses an automatic sample adding device. The device uses a PLC controller to shut down the motor, injects the sample into the sample container through the water outlet, and achieves the effect of automatic sample adding through the setting of the electric push rod. However, when adding samples, it can only add the sample, and lacks the operation of mixing multiple samples, resulting in that different components (such as liquid, powder or gas) between multiple samples cannot be evenly distributed. The experimental error caused by the uneven components will affect the progress of the experiment. In addition, when adding multiple times, since there will be small errors in each addition, multiple additions will continuously expand the errors, resulting in errors in the experimental data. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention aims to provide an automatic mixing and adding sample device.

[0006] To solve the above problems, the present invention adopts the following technical solutions.

[0007] An automatic mixing and adding device comprises a placement seat, wherein the four corners of the upper surface of the placement seat are fixedly connected with support shafts, the top of the support shaft is fixedly connected with a top plate, a pretreatment component for mixing samples is arranged inside the top plate, and a feeding component for accurately controlling the flow is arranged on the pretreatment component.

[0008] The pretreatment component includes a mixing bin fixed inside the top plate, four feeding bins are fixedly connected to the upper surface of the mixing bin, an observation component is arranged inside the feeding bin, a connecting pipe is fixedly connected to the bottom of the feeding bin, a pretreatment bin is fixedly connected to the bottom of the connecting pipe, a liquid outlet is provided at the bottom of the pretreatment bin, a first drive motor is fixedly connected to the upper surface of the pretreatment bin, a rotating shaft is fixedly connected to the output end of the first drive motor, a push plate is fixedly connected to the outer surface of the rotating shaft near the top, a closing component is slidably connected to the inside of the connecting pipe, and a mixing component is rotatably arranged on the outer surface of the rotating shaft near the bottom.

[0009] Furthermore, the closing component includes a second ring fixed in the middle of the outer surface of the rotating shaft and a movable sleeve sliding inside the connecting pipe, two second trapezoidal blocks are fixedly connected to the upper surface of the second ring, liquid inlets are symmetrically opened on the outer surface of the movable sleeve, a linkage rod is fixedly connected to the top of the movable sleeve, the bottom of the linkage rod is fixedly connected to the first ring, an L-shaped rod is symmetrically fixedly connected to the inner surface of the first ring, the bottom of the linkage rod extends through the interior of the pretreatment bin, the bottom of the L-shaped rod is located on the upper surface of the second ring, and the push plate is located inside the pretreatment bin.

[0010] Furthermore, the mixing assembly includes five first trapezoidal blocks fixed on the inner surface of the mixing bin near the bottom, a first annular rack fixed on the inner surface of the mixing bin and two rotating sleeves rotatably connected to the outer surface of the rotating shaft near the bottom, two through grooves are symmetrically opened on the outside of the rotating sleeve, a telescopic rod is slidably connected inside the rotating sleeve, a stirring blade is symmetrically fixedly connected to the outer surface of the telescopic rod, a first gear is fixedly connected to one side of the rotating sleeve, and a first spring is fixedly connected to one side of the telescopic rod.

[0011] Furthermore, the first annular rack is located above the first trapezoidal block, the first annular rack and the first gear are meshed with each other, the telescopic rod is at the same horizontal height as the first trapezoidal block, the stirring blades pass through the through slot and slide with each other, the first spring is located inside the rotating sleeve, and one side of the first spring is fixedly connected to the inside of the rotating sleeve.

[0012] Furthermore, the observation assembly includes a sliding rod fixed at the bottom of the feeding bin, the outer surface of the sliding rod is slidably connected to the foam, the upper surface of the foam is fixedly connected to the scale rod, and the top of the scale rod extends out of the interior of the feeding bin.

[0013] Furthermore, the feeding assembly includes a fixed cylinder fixed on the lower surface of the mixing bin, the lower surface of the fixed cylinder is fixedly connected to a transparent feed hopper, the outer surface of the fixed cylinder is fixedly connected to a second drive motor, the output end of the second drive motor is fixedly connected to a second gear, the top and bottom of the inner surface of the fixed cylinder are fixedly connected to shielding plates, a feed port is provided inside the shielding plate, the interior of the fixed cylinder is rotatably connected to a rotating block, the outer surface of the rotating block is fixedly connected to a second annular rack, and the interior of the rotating block is provided with multiple groups of discharge cavities.

[0014] Furthermore, the second gear is meshed with the second annular rack, the two feed ports are arranged at opposite positions, a rubber pad is provided on the side where the two shielding plates are close to each other, a switching assembly is slidably connected to the upper surface of the rotating block, a sealing assembly is provided on the outer surface of the transparent feed hopper, and the volumes of the multiple groups of discharge cavities are different.

[0015] Furthermore, the switching assembly includes a rotating plate rotating on the upper surface of the rotating block and an identification ring fixed on the lower surface of the rotating block, a feeding hole is opened inside the rotating plate, a rotating rod is fixedly connected to the bottom of the rotating plate, and a pointer is fixedly connected to the outer surface of the rotating rod near the bottom.

[0016] Furthermore, the bottom of the rotating rod passes through the interior of the rotating block, the rotating rod and the rotating block rotate relative to each other, a rubber sealing ring is provided on the outer surface of the rotating plate, the pointer is located above the identification ring, a volume value is provided on the identification ring, and the volume value corresponds one-to-one to a plurality of discharge cavities, and the position of the feed hole is consistent with the position pointed by the pointer.

[0017] Furthermore, the sealing assembly includes two support rods symmetrically fixed on the outside of the transparent feed hopper, the outer surfaces of the support rods are slidably connected to a shielding frame, the outer surfaces of the support rods are sleeved with a second spring, the interior of the support rods is provided with a storage groove, the interior of the storage groove is hinged with a hinge block, a limit plate is provided on one side of the support rod, and the second spring is located between the limit plate and the shielding frame.

[0018] Compared with the prior art, the present invention has the following beneficial effects: 1. This scheme is provided with a pretreatment component. The liquid sample enters the interior of the movable sleeve through the liquid inlet and is continuously pushed and broken up by the rotating push plate, so that the falling multiple liquid samples are preliminarily mixed inside the pretreatment chamber. Therefore, when the liquid is premixed and pre-stirred, it is convenient to improve the efficiency of subsequent sample processing. Premixing can ensure that different components are evenly distributed in the sample, reduce the inhomogeneity of the components, and reduce the errors in subsequent experiments or analyses. In subsequent experiments, the time for adding samples one by one can be reduced, the expansion of errors can be reduced, and work efficiency can be improved.

[0019] 2. This solution is provided with a mixing component. The stirring blade rotates around the rotating shaft while rotating around the rotating sleeve, and the multiple samples inside the mixing chamber are mixed with the left and right swinging motion trajectory, so that the premixing and mixing operations inside the mixing chamber can be carried out simultaneously, which greatly improves the work efficiency. At the same time, after the multiple samples are premixed, the mixing time inside the mixing chamber is greatly reduced, which further improves the work efficiency and achieves a better mixing effect.

[0020] 3. This solution is provided with an observation component. As the liquid is used, the foam will decrease and the water level of the liquid will continue to decrease. The foam will also drive the scale rod to move downward. The scale on the scale rod can be observed, and the amount of liquid inside the feeding bin can be observed at any time. It is more convenient to observe the scale rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the mixing bin of the present invention; Figure 3 This is a schematic diagram of the internal structure of the pretreatment chamber of the present invention; Figure 4 It is a schematic diagram of the structure of the mixing assembly of the present invention; Figure 5 It is a schematic cross-sectional structural diagram of the rotating sleeve of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the feeding bin of the present invention; Figure 7 It is a schematic diagram of the structure of the feeding assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the rotating block of the present invention; Fig. 9 It is a schematic diagram of the structure of the switching component of the present invention; Fig.10 It is a schematic diagram of the structure of the sealing assembly of the present invention; Fig.11 It is a schematic diagram of the cross-sectional structure of the support rod of the present invention.

[0022] Description of the numbers in the figure: 1. Placement seat; 2. Support shaft; 3. Top plate; 4. Pretreatment components; 41. Mixing bin; 42. Feeding bin; 43. Connecting pipeline; 44. Mixing assembly; 441. Rotating sleeve; 442. Through slot; 443. Stirring blade; 444. First gear; 445. First trapezoidal block; 446. Telescopic rod; 447. First annular rack; 448. First spring; 45. Observation assembly; 451. Sliding rod; 452. Foam; 453. Scale rod; 46. ​​first circular ring; 47. L-shaped rod; 48. second trapezoidal block; 49. liquid inlet; 410. second circular ring; 411. movable sleeve; 412. rotating shaft; 413. linkage rod; 414. liquid outlet; 415. push plate; 416. pre-treatment chamber; 417. first drive motor; 5. Feeding assembly; 51. Fixed cylinder; 52. Shielding plate; 53. Feeding port; 54. Rotating block; 55. Switching assembly; 551. Rotating rod; 552. Rotating plate; 553. Feeding hole; 554. Identification ring; 555. Pointer; 56, sealing assembly; 561, support rod; 562, shielding frame; 563, second spring; 564, storage slot; 565, hinge block; 57. Second driving motor; 58. Second gear; 59. Second annular rack; 510. Discharging cavity; 511. Transparent feeding hopper. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0024] See also Figures 1 to 11 An automatic mixing and adding device comprises a placement seat 1, the four corners of the upper surface of the placement seat 1 are fixedly connected with a support shaft 2, the top of the support shaft 2 is fixedly connected with a top plate 3, the interior of the top plate 3 is provided with a pretreatment component 4 for mixing samples, and the pretreatment component 4 is provided with a feeding component 5 for accurately controlling the flow rate.

[0025] like Figure 2 and Figure 3 As shown, the pretreatment component 4 includes a mixing bin 41 fixed inside the top plate 3, four feeding bins 42 are fixedly connected to the upper surface of the mixing bin 41, an observation component 45 is arranged inside the feeding bin 42, a connecting pipe 43 is fixedly connected to the bottom of the feeding bin 42, a pretreatment bin 416 is fixedly connected to the bottom of the connecting pipe 43, a liquid outlet 414 is provided at the bottom of the pretreatment bin 416, a first drive motor 417 is fixedly connected to the upper surface of the pretreatment bin 416, a rotating shaft 412 is fixedly connected to the output end of the first drive motor 417, a push plate 415 is fixedly connected to the outer surface of the rotating shaft 412 near the top, a closing component is slidably connected to the inside of the connecting pipe 43, and a mixing component 44 is rotatably arranged on the outer surface of the rotating shaft 412 near the bottom.

[0026] The closing component includes a second ring 410 fixed in the middle of the outer surface of the rotating shaft 412 and a movable sleeve 411 sliding inside the connecting pipe 43, two second trapezoidal blocks 48 are fixedly connected to the upper surface of the second ring 410, and a liquid inlet 49 is symmetrically opened on the outer surface of the movable sleeve 411. A linkage rod 413 is fixedly connected to the top of the movable sleeve 411, and the bottom of the linkage rod 413 is fixedly connected to the first ring 46, and an L-shaped rod 47 is symmetrically fixedly connected to the inner surface of the first ring 46. The bottom of the linkage rod 413 extends through the interior of the pretreatment bin 416, and the bottom of the L-shaped rod 47 is located on the upper surface of the second ring 410, and the push plate 415 is located inside the pretreatment bin 416.

[0027] When adding samples to the interior of the experimental container or the experimental analysis and detection equipment, the samples need to be mixed before adding, and the samples to be mixed are transported to the interior of the feeding bin 42 respectively. At this time, the first drive motor 417 is turned on to work, and the first drive motor 417 drives the rotating shaft 412 to rotate. The rotating shaft 412 drives the two second trapezoidal blocks 48 to rotate through the second ring 410, and the second trapezoidal blocks 48 gradually approach the L-shaped rod 47. After the hypotenuse of the second trapezoidal block 48 contacts the bottom of the L-shaped rod 47, the second trapezoidal block 48 will push the L-shaped rod 47 upward, and the L-shaped rod 47 drives the four linkage rods 413 to move upward synchronously through the transmission of the first ring 46. The linkage rod 413 drives the movable sleeve 411 to move upward inside the connecting pipe 43, and drives the liquid inlet 49 to move toward the interior of the feeding bin 42. At this time, the liquid sample inside the feeding bin 42 passes through The liquid inlet 49 enters the interior of the movable sleeve 411 and falls into the interior of the pretreatment chamber 416. At the same time, the rotating shaft 412 drives the two push plates 415 to rotate inside the pretreatment chamber 416. Since the push plates 415 are at a certain angle to the direction of rotation, the push plates 415 continuously push and scatter the falling liquid to the edge of the pretreatment chamber 416 during rotation, so that the falling multiple liquid samples are preliminarily mixed inside the pretreatment chamber 416, and finally the mixed sample falls into the interior of the mixing chamber 41 through the liquid outlet 414. Therefore, when the liquid is pre-mixed and pre-stirred, it is convenient for the subsequent processing of the sample to require less time to operate. Pre-mixing can ensure that the different components are evenly distributed in the sample, reduce the unevenness of the components, and reduce the errors in subsequent experiments or analyses. In subsequent experiments, the time for adding samples one by one can be reduced, thereby improving work efficiency.

[0028] like Figure 4 and Figure 5As shown, the mixing assembly 44 includes five first trapezoidal blocks 445 fixed on the inner surface of the mixing chamber 41 near the bottom, a first annular rack 447 fixed on the inner surface of the mixing chamber 41 and two rotating sleeves 441 rotatably connected to the outer surface of the rotating shaft 412 near the bottom, two through grooves 442 are symmetrically provided on the outer side of the rotating sleeve 441, a telescopic rod 446 is slidably connected inside the rotating sleeve 441, a stirring blade 443 is symmetrically fixedly connected to the outer surface of the telescopic rod 446, a first gear 444 is fixedly connected to one side of the rotating sleeve 441, and a first spring 448 is fixedly connected to one side of the telescopic rod 446.

[0029] The first annular rack 447 is located above the first trapezoidal block 445, the first annular rack 447 and the first gear 444 are meshed with each other, the telescopic rod 446 is at the same horizontal height as the first trapezoidal block 445, the stirring blades 443 pass through the through groove 442 and slide against each other, the first spring 448 is located inside the rotating sleeve 441, and one side of the first spring 448 is fixedly connected to the inside of the rotating sleeve 441.

[0030] After the premixing is completed, the samples need to be deeply mixed to ensure that the samples are fully mixed. While the rotating shaft 412 rotates, the rotating shaft 412 drives the two movable sleeves 411 to rotate in a circle, and the rotating sleeve 441 drives the first gear 444 to move on the first annular rack 447. Since the first gear 444 and the first annular rack 447 are meshed with each other, the first gear 444 rotates, driving the rotating sleeve 441 to rotate synchronously. The rotating sleeve 441 drives the stirring blade 443 to rotate around the rotating sleeve 441 through the through groove 442. While the rotating sleeve 441 moves in a circle, it drives the telescopic rod 446 to move toward the inclined surface of the first trapezoidal block 445, so that the telescopic rod 446 moves toward the rotating sleeve. The internal contraction of the cylinder 441 drives the stirring blade 443 to slide inside the through groove 442. When the telescopic rod 446 leaves the first trapezoidal block 445, the telescopic rod 446 and the stirring blade 443 are reset under the compression of the first spring 448, so that the stirring blade 443 presents a left-right swinging motion trajectory. Finally, the stirring blade 443 rotates around the rotating shaft 412 while rotating around the rotating sleeve 441, and simultaneously performs a left-right swinging motion trajectory to mix multiple samples inside the mixing chamber 41, so that the pre-mixing and mixing operations inside the mixing chamber 41 are carried out simultaneously, which greatly improves the work efficiency. At the same time, after multiple samples are pre-mixed, the mixing time inside the mixing chamber 41 is greatly reduced, which further improves the work efficiency and achieves a better mixing effect.

[0031] like Figure 6 As shown, the observation assembly 45 includes a slide rod 451 fixed at the bottom of the feeding bin 42, the outer surface of the slide rod 451 is slidably connected to the foam 452, the upper surface of the foam 452 is fixedly connected to the scale rod 453, and the top of the scale rod 453 extends out of the interior of the feeding bin 42.

[0032] When adding and mixing samples, the samples inside the feeding bin 42 will continue to decrease. When the number of mixed samples that need to be tested is too large, the samples stored in the feeding bin 42 will be used up. However, it is necessary to constantly observe the inside of the feeding bin 42, and it is inconvenient to observe the inside of the feeding bin 42, which increases a lot of workload. When the liquid inside the feeding bin 42 is used up, the foam 452 will decrease as the liquid is used and the water level of the liquid continues to decrease. The foam 452 will also drive the scale rod 453 to move downward, and the scale on the scale rod 453 can be observed. The amount of liquid inside the feeding bin 42 can be observed at any time, and observing the scale rod 453 is more convenient.

[0033] like Figure 7 and Figure 8 As shown, the feeding assembly 5 includes a fixed cylinder 51 fixed on the lower surface of the mixing bin 41, a transparent feed hopper 511 is fixedly connected to the lower surface of the fixed cylinder 51, a second drive motor 57 is fixedly connected to the outer surface of the fixed cylinder 51, the output end of the second drive motor 57 is fixedly connected to the second gear 58, a shielding plate 52 is fixedly connected to the top and bottom of the inner surface of the fixed cylinder 51, a feed port 53 is provided inside the shielding plate 52, the interior of the fixed cylinder 51 is rotatably connected to a rotating block 54, the outer surface of the rotating block 54 is fixedly connected to a second annular rack 59, and a plurality of discharge cavities 510 are provided inside the rotating block 54.

[0034] The second gear 58 is meshed with the second annular rack 59, the two feed ports 53 are arranged at opposite positions, a rubber pad is provided on the side where the two shielding plates 52 are close to each other, a switching assembly 55 is slidably connected to the upper surface of the rotating block 54, a sealing assembly 56 is provided on the outer surface of the transparent feed hopper 511, and the multiple groups of discharge chambers 510 have different volumes.

[0035] When adding samples to the inside of detection instruments and experimental containers, the same volume of liquid is often required and added manually. However, for a large number of samples, manual addition may result in large errors. When adding samples, the second drive motor 57 is turned on to drive the second gear 58 to rotate. The second gear 58 drives the rotating block 54 to rotate through the second annular rack 59, and the discharge chamber 510 moves to the upper feed port 53. The liquid inside the mixing chamber 41 enters the discharge chamber 510. At this time, the rotating block 54 continues to rotate, driving the liquid inside the discharge chamber 510 to move to the lower feed port 53. At this time, the liquid inside the discharge chamber 510 enters the transparent feed hopper 511 through the lower feed port 53 and is output through the transparent feed hopper 511. This continuous process can effectively control the amount of liquid each time, thereby performing quantitative addition.

[0036] like Fig. 9 As shown, the switching assembly 55 includes a rotating plate 552 rotating on the upper surface of the rotating block 54 and an identification ring 554 fixed on the lower surface of the rotating block 54, a feed hole 553 is opened inside the rotating plate 552, a rotating rod 551 is fixedly connected to the bottom of the rotating plate 552, and a pointer 555 is fixedly connected to the outer surface of the rotating rod 551 near the bottom.

[0037] The bottom of the rotating rod 551 passes through the interior of the rotating block 54, and the rotating rod 551 and the rotating block 54 rotate relative to each other. A rubber sealing ring is provided on the outer surface of the rotating plate 552. The pointer 555 is located above the identification ring 554. The identification ring 554 is provided with a volume value, and the volume value corresponds one by one to the multiple discharge cavities 510. The position of the feed hole 553 is consistent with the position pointed by the pointer 555.

[0038] However, there are multiple discharge chambers 510 of different volumes inside the rotating block 54. The amount of liquid added each time is inconsistent. In order to ensure that the amount added each time is consistent, the rotating rod 551 is rotated to drive the rotating plate 552 to rotate, and the rotating plate 552 drives the feed hole 553 to rotate. While rotating, it drives the pointer 555 to rotate on the identification ring 554. Observe that the pointer 555 points to a certain scale on the identification ring 554, indicating that the feed hole 553 is located on the discharge chamber 510 corresponding to the scale, and the rotating plate 552 rotates the other several discharge chambers 510. Blocked. At this time, when the rotating block 54 rotates, the rotating block 54 will drive the rotating plate 552 to rotate synchronously. When the feed hole 553 rotates to the upper feed port 53, the liquid enters the discharge chamber 510 through the feed hole 553. When the rotating block 54 continues to rotate, the inside of the discharge chamber 510 is discharged through the lower feed port 53. Therefore, by controlling the position of the feed hole 553 on each discharge chamber 510 and switching the discharge chambers 510 of different sizes for use, the discharge of samples with different flow rates can be accurately controlled, and the flow rates of the same batch of discharges are consistent without error.

[0039] like Fig. 9 and Fig.10 As shown, the sealing assembly 56 includes two support rods 561 symmetrically fixed on the outside of the transparent feed hopper 511, the outer surface of the support rod 561 is slidably connected to the shielding frame 562, the outer surface of the support rod 561 is sleeved with a second spring 563, the support rod 561 is provided with a storage groove 564 inside, the storage groove 564 is hinged with a hinge block 565 inside, a limit plate is provided on one side of the support rod 561, and the second spring 563 is located between the limit plate and the shielding frame 562.

[0040] After the sample adding device has finished adding, the front end of the transparent feed hopper 511 is directly exposed to the outside world, and the interior of the transparent feed hopper 511 is easily contaminated by the outside world, which can easily affect the next discharge of liquid. Therefore, when the transparent feed hopper 511 is idle, the two shielding frames 562 are close to each other to wrap the transparent feed hopper 511, and the transparent feed hopper 511 is sealed inside the shielding frame 562, which can reduce the internal contamination of the transparent feed hopper 511 by external dust and viruses. When using the device, pull the shielding frame 562 away from the transparent feed hopper 511. When the second spring 563 passes through the receiving groove 564, the hinge block 565 is rotated to a vertical shape. The shielding frame 562 is squeezed by the second spring 563 and stuck on one side of the hinge block 565, thereby ensuring that the shielding frame 562 is fixed on the support rod 561 to avoid obstruction to the sample adding work.

[0041] Method of use: First, when the liquid sample enters the interior of the movable sleeve 411 through the liquid inlet 49 and falls into the interior of the pretreatment chamber 416, at the same time, the rotating shaft 412 drives the two push plates 415 to rotate inside the pretreatment chamber 416. Since the push plates 415 form a certain angle with the direction of rotation, the push plates 415 continuously push and scatter the falling liquid to the edge of the pretreatment chamber 416 during rotation, so that the falling multiple liquid samples are preliminarily mixed inside the pretreatment chamber 416. While the rotating sleeve 441 moves in a circle, it rotates on its own with the cooperation of the first gear 444 and the first annular rack 447, and at the same time, the telescopic rod 44 6 Under the cooperation of the first spring 448 and the first trapezoidal block 445, the telescopic rod 446 is constantly swung left and right inside the rotating sleeve 441, so that the stirring blade 443 rotates around the rotating shaft 412 while swung left and right along the motion trajectory to mix multiple samples inside the mixing chamber 41, and the foam 452 will decrease as the liquid is used and the water level of the liquid is continuously reduced. The foam 452 will simultaneously drive the scale rod 453 to move downward, and the scale on the scale rod 453 can be observed, and the amount of liquid inside the feeding chamber 42 can be observed at any time, and it is more convenient to observe the scale rod 453; Then, the liquid enters the interior of the discharge chamber 510, and the rotating block 54 continues to rotate, driving the liquid in the discharge chamber 510 to move to the feed port 53 below. At this time, the liquid in the discharge chamber 510 enters the interior of the transparent feed hopper 511 through the feed port 53 below, and is output through the transparent feed hopper 511. This continuous process can effectively control the amount of liquid each time, so as to perform quantitative addition. By controlling the feed hole 553 and the discharge chambers 510 of different sizes, the volume of different liquid discharge and sample addition can be switched, so that the discharge of samples with different flow rates can be accurately controlled, and the flow rate of the same batch of discharges is consistent without error. The two shielding frames 562 can be used to wrap and seal the transparent feed hopper 511 when it is idle to prevent external dirt from contaminating the interior of the transparent feed hopper 511.

[0042] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic mixing and adding sample device, comprising a placement seat (1), wherein four corners of the upper surface of the placement seat (1) are fixedly connected to support shafts (2), and the top of the support shaft (2) is fixedly connected to a top plate (3); Features: A pretreatment component (4) for mixing samples is disposed inside the top plate (3), and a feeding component (5) for accurately controlling flow is disposed on the pretreatment component (4); The pretreatment component (4) comprises a mixing bin (41) fixed inside the top plate (3); four feeding bins (42) are fixedly connected to the upper surface of the mixing bin (41); an observation component (45) is arranged inside the feeding bin (42); a connecting pipe (43) is fixedly connected to the bottom of the feeding bin (42); a pretreatment bin (416) is fixedly connected to the bottom of the connecting pipe (43); a liquid outlet (414) is provided at the bottom of the pretreatment bin (416); a first drive motor (417) is fixedly connected to the upper surface of the pretreatment bin (416); a rotating shaft (412) is fixedly connected to the output end of the first drive motor (417); a pushing plate (415) is fixedly connected to the outer surface of the rotating shaft (412) near the top; a closing component is slidably connected to the inside of the connecting pipe (43); and a mixing component (44) is rotatably arranged on the outer surface of the rotating shaft (412) near the bottom.

2. The automatic mixing and adding device according to claim 1, characterized in that: The closing component comprises a second circular ring (410) fixed at the middle of the outer surface of the rotating shaft (412) and a movable sleeve (411) sliding inside the connecting pipe (43); two second trapezoidal blocks (48) are fixedly connected to the upper surface of the second circular ring (410); liquid inlets (49) are symmetrically provided on the outer surface of the movable sleeve (411); a linkage rod (413) is fixedly connected to the top of the movable sleeve (411); a first circular ring (46) is fixedly connected to the bottom of the linkage rod (413); an L-shaped rod (47) is symmetrically fixedly connected to the inner surface of the first circular ring (46); the bottom of the linkage rod (413) extends through the inside of the pre-treatment bin (416); the bottom of the L-shaped rod (47) is located on the upper surface of the second circular ring (410); and the push plate (415) is located inside the pre-treatment bin (416).

3. An automatic mixing and adding sample device according to claim 2, characterized in that: The mixing assembly (44) comprises five first trapezoidal blocks (445) fixed on the inner surface of the mixing chamber (41) near the bottom, a first annular rack (447) fixed on the inner surface of the mixing chamber (41), and two rotating sleeves (441) rotatably connected to the outer surface of the rotating shaft (412) near the bottom, the rotating sleeve (441) having two through grooves (442) symmetrically formed on the outer side, a telescopic rod (446) slidably connected inside the rotating sleeve (441), a stirring blade (443) symmetrically fixedly connected to the outer surface of the telescopic rod (446), a first gear (444) fixedly connected to one side of the rotating sleeve (441), and a first spring (448) fixedly connected to one side of the telescopic rod (446).

4. The automatic mixing and adding device according to claim 3, characterized in that: The first annular rack (447) is located above the first trapezoidal block (445); the first annular rack (447) and the first gear (444) are meshed with each other; the telescopic rod (446) is at the same horizontal height as the first trapezoidal block (445); the stirring blades (443) penetrate the through slots (442) and slide against each other; the first spring (448) is located inside the rotating sleeve (441); and one side of the first spring (448) is fixedly connected to the inside of the rotating sleeve (441).

5. The automatic mixing and adding sample device according to claim 4, characterized in that: The observation assembly (45) comprises a sliding rod (451) fixed to the bottom of the feeding bin (42); the outer surface of the sliding rod (451) is slidably connected to a foam (452); the upper surface of the foam (452) is fixedly connected to a scale rod (453); the top of the scale rod (453) extends out of the interior of the feeding bin (42).

6. The automatic mixing and adding device according to claim 5, characterized in that: The feeding assembly (5) comprises a fixed cylinder (51) fixed to the lower surface of the mixing bin (41); a transparent feeding hopper (511) is fixedly connected to the lower surface of the fixed cylinder (51); a second driving motor (57) is fixedly connected to the outer surface of the fixed cylinder (51); an output end of the second driving motor (57) is fixedly connected to a second gear (58); shielding plates (52) are fixedly connected to the top and bottom of the inner surface of the fixed cylinder (51); a feeding port (53) is provided inside the shielding plate (52); a rotating block (54) is rotatably connected inside the fixed cylinder (51); a second annular rack (59) is fixedly connected to the outer surface of the rotating block (54); and a plurality of discharge cavities (510) are provided inside the rotating block (54).

7. The automatic mixing and adding device according to claim 6, characterized in that: The second gear (58) and the second annular rack (59) are meshed with each other, the two feed ports (53) are arranged at opposite positions, a rubber pad is arranged on the side where the two shielding plates (52) are close to each other, a switching component (55) is slidably connected to the upper surface of the rotating block (54), a sealing component (56) is arranged on the outer surface of the transparent feed hopper (511), and the volumes of the plurality of discharge chambers (510) are different.

8. The automatic mixing and adding sample device according to claim 7, characterized in that: The switching assembly (55) comprises a rotating plate (552) rotating on the upper surface of the rotating block (54) and an identification ring (554) fixed on the lower surface of the rotating block (54); a feeding hole (553) is provided inside the rotating plate (552); a rotating rod (551) is fixedly connected to the bottom of the rotating plate (552); and a pointer (555) is fixedly connected to the outer surface of the rotating rod (551) near the bottom.

9. The automatic mixing and adding device according to claim 8, characterized in that: The bottom of the rotating rod (551) passes through the interior of the rotating block (54); the rotating rod (551) and the rotating block (54) rotate relative to each other; a rubber sealing ring is provided on the outer surface of the rotating plate (552); the pointer (555) is located above the identification ring (554); a volume value is provided on the identification ring (554); and the volume values ​​correspond to the plurality of discharge cavities (510) one by one; the position of the feed hole (553) is consistent with the position pointed to by the pointer (555).

10. The automatic mixing and adding sample device according to claim 9, characterized in that: The sealing assembly (56) comprises two support rods (561) symmetrically fixed outside the transparent feed hopper (511); the outer surfaces of the support rods (561) are slidably connected to a shielding frame (562); the outer surfaces of the support rods (561) are sleeved with a second spring (563); a receiving groove (564) is provided inside the support rod (561); a hinge block (565) is hinged inside the receiving groove (564); a limiting plate is provided on one side of the support rod (561); and the second spring (563) is located between the limiting plate and the shielding frame (562).

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