An automatic acid dosing device

Abstract

This invention discloses an automatic acid addition device, the key technical features of which include a feeding mechanism for feeding test tubes to be acidified; a discharging mechanism for discharging test tubes after acidification; an acid addition seat into which the test tubes are inserted during acid addition; a transfer mechanism for transferring test tubes between the feeding mechanism and the acid addition seat, and between the acid addition seat and the discharging mechanism; and an acid addition nozzle positioned above the acid addition seat for adding acid to the test tubes on the seat. By transferring the test tubes through the transfer mechanism and adding acid to the test tubes delivered to the acid addition seat through the acid addition nozzle, manual acid addition is unnecessary, thus reducing the risk of danger to operators and improving the efficiency of acid addition.

Description

Technical Field

[0001] This invention relates to the technical field of sample digestion, and more specifically, to an automatic acid dosing apparatus. Background Technology

[0002] In the field of testing, the obtained samples need to be digested to destroy the organic matter or reducing substances in the samples.

[0003] During digestion, acid needs to be added manually to the test tube containing the sample. Since the acid itself is highly corrosive, it is easy to cause danger to the operator during the acid addition process. Furthermore, when dealing with the digestion of large batches of samples, manual acid addition takes a lot of time, resulting in low acid addition efficiency and affecting the progress of the entire experiment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an automatic acid adder that uses a transfer mechanism to transfer test tubes and adds acid to the test tubes delivered to the acid adder seat via an acid adder nozzle. This eliminates the need for manual acid addition, thereby reducing the risk to operators and improving the efficiency of acid addition.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic acid addition device, comprising a feeding mechanism, wherein the feeding mechanism is used to feed test tubes to be acidified;

[0006] A discharge mechanism, used to deliver the test tubes after acid addition;

[0007] An acid-adding holder is provided, into which the test tube is inserted when acid is added.

[0008] A transfer mechanism, wherein the transfer is used to transfer test tubes between the feeding mechanism and the acid adding seat, and between the acid adding seat and the discharging mechanism;

[0009] And an acid-adding nozzle, which is disposed above the acid-adding seat and is used to add acid to the test tubes on the acid-adding seat.

[0010] The present invention is further configured such that: when the test tube is transferred between the feeding mechanism and the acid addition seat, and between the acid addition seat and the discharge mechanism, the transfer is carried out in a straight line in the horizontal direction;

[0011] The transfer mechanism includes a transfer rod that can move vertically and horizontally, and the horizontal movement direction of the transfer rod is parallel to the horizontal movement direction of the test tube between the acid addition seat and the discharge mechanism.

[0012] The device includes a clamping assembly for clamping test tubes. The clamping assembly is mounted on a transfer rod and there are two clamping assemblies. When the transfer rod is located between the acid filling seat and the feeding mechanism, the two clamping assemblies can clamp the test tubes on the feeding mechanism and the acid filling seat respectively. When the transfer rod is located between the acid filling seat and the discharge mechanism, the two clamping assemblies can clamp the test tubes on the acid filling seat and the discharge mechanism respectively.

[0013] The present invention is further configured such that: the clamping assembly includes clamping plates, and two clamping plates are provided, the two clamping plates sliding along directions of approaching and moving away from each other to achieve clamping and releasing of the test tube;

[0014] And a double-piston rod hydraulic cylinder, which is used to drive the two clamping plates to slide.

[0015] The present invention is further configured such that: the clamping assembly further includes elastic pads, and two elastic pads are provided and respectively fixedly connected to the sides of the two clamping plates that are close to each other.

[0016] The present invention is further configured such that: the feeding mechanism and the discharging mechanism have the same structure, both including a feeding box, a conveying component, a discharging box, and a test tube rack;

[0017] The feeding mechanism has a test tube rack containing test tubes stored in the feeding box. The conveying component conveys the test tube rack in the feeding box to the discharging box. During the conveying process, the transfer mechanism clamps and transfers the test tubes on the test tube rack.

[0018] The feeding box of the discharging mechanism stores empty test tube racks. The conveying mechanism transfers the test tube racks in the feeding box to the discharging box. During the transfer process, the transfer mechanism clamps and transfers the acidified test tubes to the test tube racks.

[0019] The present invention is further configured such that: the feed box and the discharge box have the same structure, including a base plate, the base plate is horizontally arranged, and the test tube rack is supported on the top of the base plate;

[0020] Side plates, two of which are fixedly connected to the top of the base plate, the two side plates are located on both sides of the base plate, the two side plates are vertical and parallel to each other, and the test tube rack is located between the two side plates;

[0021] End plate, the end plate is fixedly connected to the top of the base plate and located at one end of the base plate, and the two ends of the end plate are fixedly connected to the two side plates respectively;

[0022] A pusher plate is disposed between two side plates. The pusher plate applies a pushing force to the test tube rack to push the test tube rack away from the bottom plate from the end away from the end plate.

[0023] And a locking assembly for locking the test tube rack away from the end plate to the two side plates.

[0024] The present invention is further configured such that: the conveying assembly includes a conveying rod, the length direction of the conveying rod is arranged along the arrangement direction of the feed box and the discharge box, the conveying rod slides along its own length direction and the conveying rod is close to the side of the feed box and the discharge box away from the end plate, and a receiving groove is opened near the feed box and the discharge box of the conveying rod, the receiving groove can be aligned with the feed box and the discharge box respectively, when the receiving groove is aligned with the feed box, the push plate pushes the test tube rack to move so that the test tube rack away from the push plate enters the receiving groove;

[0025] And the discharge hydraulic cylinder, when the receiving tank is aligned with the discharge box, the discharge hydraulic cylinder pushes the test tube rack in the receiving tank into the space between the two side plates.

[0026] The invention is further configured to include a base, an acid-adding seat and a transfer mechanism located on the top of the base, a feeding mechanism and a discharging mechanism located on both sides of the base, and two transmission rods of the feeding mechanism and the discharging mechanism sliding on both sides of the base; the feeding box and the discharging box of the feeding mechanism and the discharging mechanism are detachably connected to the base.

[0027] The present invention is further configured such that: a long groove is provided on the base corresponding to the position of each bottom plate, and a disc groove is provided on the side of the long groove away from the bottom plate;

[0028] A limiting strip is provided at the end of the base plate away from the end plate. The limiting strip can pass through the long groove and enter the disc groove. The limiting strip is rotatably connected to the base plate so that the limiting strip rotates in the disc groove and is pressed against the side of the disc groove near the base plate.

[0029] The invention is further configured such that: a rotating rod is provided inside the base plate, which extends through the base plate along the length of the base plate; the rotating rod is fixedly connected to the limiting strip; the rotating rod can rotate on the base plate to drive the limiting strip to rotate; and the rotating rod can slide on the base plate to push the limiting strip in and out of the long groove and the disc groove.

[0030] In summary, the present invention has the following advantages over the prior art: the present invention uses a transfer mechanism to transfer test tubes and adds acid to the test tubes transferred to the acid adding seat through an acid adding nozzle, eliminating the need for manual acid addition, thus reducing the risk to operators and improving the efficiency of acid addition. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the embodiment;

[0032] Figure 2 for Figure 1 Enlarged schematic diagram of part A;

[0033] Figure 3 This is a schematic diagram of the feed box for an embodiment.

[0034] Figure 4 for Figure 3 Enlarged schematic diagram of part B;

[0035] Figure 5 A cross-sectional view of the feed box in an embodiment;

[0036] Figure 6 for Figure 5 Enlarged schematic diagram of part C;

[0037] Figure 7 A cross-sectional view of the feed box and base in an embodiment;

[0038] Figure 8 This is a schematic diagram of the base and acid-adding mechanism in an embodiment;

[0039] Figure 9 for Figure 8 Enlarged schematic diagram of part D;

[0040] Figure 10 for Figure 8 Enlarged schematic diagram of part E;

[0041] Figure 11 This is a schematic diagram illustrating the discharge hydraulic cylinder in an embodiment;

[0042] Figure 12 for Figure 11 Enlarged schematic diagram of part F.

[0043] In the diagram: 1. Base; 11. Conveying trough; 12. Long trough; 13. Disc trough; 2. Acid adding seat; 3. Feeding mechanism; 4. Discharging mechanism; 5. Acid adding mechanism; 51. Support seat; 52. Acid adding nozzle; 53. Lifting seat; 54. Acid bottle; 55. Hoses; 6. Transfer mechanism; 61. Transfer rod; 62. Clamping assembly; 621. Clamping plate; 622. Double piston rod hydraulic cylinder; 623. Elastic pad; 624. Fixing block; 625. Guide rod; 63. Lifting rod; 64. Horizontal moving seat; 65. Fixed seat; 7. Discharge box; 71. 72. Base plate; 73. Side plate; 74. Positioning groove; 75. Positioning rod; 76. Spring; 77. Storage groove; 78. End plate; 79. Push plate; 70. Positioning block; 71. Locking assembly; 72. Locking rod; 73. Pull rod; 74. Rotating rod; 75. Limiting strip; 76. Baffle; 8. Feed box; 90. Conveying assembly; 91. Conveying rod; 91. Receiving groove; 912. Through groove; 913. Guide groove; 92. Push rod; 921. Guide block; 93. Discharge hydraulic cylinder; 10. Test tube rack; 101. Locking groove. Detailed Implementation

[0044] To enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments in this application, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the scope of protection of this application. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0045] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0046] Example: An automatic acid dosing device, see appendix. Figure 1 -Appendix Figure 12 The system includes a base 1, a feeding mechanism 3 located on one side of the base 1, a discharging mechanism 4 located on the side of the base 1 away from the feeding mechanism 3, an acid-adding seat 2 located on top of the base 1, a transfer mechanism 6 located on the base 1, and an acid-adding mechanism 5 located on the base 1. The test tubes in the feeding mechanism 3 contain samples without added acid, and are considered to be ready for acid addition. The test tubes in the discharging mechanism 4 contain samples with added acid, and are considered to be ready for acid addition. The test tubes can be inserted into the acid-adding seat 2, and the acid-adding mechanism 5 adds acid to the test tubes inserted into the acid-adding seat 2. The transfer mechanism 6 is used to transfer the test tubes between the feeding mechanism 3 and the acid-adding seat 2, and between the acid-adding seat 2 and the discharging mechanism 4.

[0047] The operator places the test tube to be acidified in the feeding mechanism 3, and the transfer mechanism 6 transfers the test tube to be acidified in the feeding mechanism 3 to the acidification seat 2. Then, the acidification mechanism 5 adds acid to the test tube on the acidification seat 2. After the acidification is completed, the transfer mechanism 6 transfers the test tube on the acidification seat 2 to the discharge mechanism 4. The operator can then take out the acidified test tube from the discharge mechanism 4. In the whole operation process, the operator only needs to place and take out the test tube.

[0048] Specifically, the base 1 is a horizontal rectangle; the horizontal movement direction of the test tube between the feeding mechanism 3 and the acid adding seat 2 and the horizontal movement direction of the test tube between the acid adding seat 2 and the discharging mechanism 4 are a straight line, and are set along the width direction of the base 1. When transferring the test tube, the transfer mechanism 6 first moves the test tube vertically upward, so that the test tube is separated from its original position, then moves along the width direction of the base 1 to reach above the target position, and then moves vertically downward to insert into the target position.

[0049] The transfer mechanism 6 includes a transfer rod 61 and clamping assemblies 62 fixedly connected to both ends of the transfer rod 61. The length direction of the transfer rod 61 is parallel to the width direction of the base 1. The transfer rod 61 can move up and down above the base 1 and slide along the width direction of the base 1. When the transfer rod 61 is located between the acid addition seat 2 and the feeding mechanism 3, the two clamping assemblies 62 can clamp the test tubes on the feeding mechanism 3 and the acid addition seat 2 respectively. When the transfer rod 61 is located between the acid addition seat 2 and the discharge mechanism 4, the two clamping assemblies 62 can clamp the test tubes on the acid addition seat 2 and the discharge mechanism 4 respectively.

[0050] When the test tubes on the acid addition seat 2 have finished adding acid, the transfer rod 61 moves between the acid addition seat 2 and the feeding mechanism 3. The two clamping components 62 clamp the test tubes on the acid addition seat 2 that have finished adding acid and the test tubes to be added acid in the feeding mechanism 3, respectively. Then, the transfer rod 61 is moved between the acid addition seat 2 and the discharge mechanism 4. At this time, the test tubes that have finished adding acid enter the discharge mechanism 4, and the test tubes to be added acid enter the acid addition seat 2. Through one feeding, the feeding of the test tubes to be added acid and the unloading of the test tubes that have finished adding acid are completed at the same time, which further improves the efficiency of acid addition.

[0051] Specifically, the clamping assembly 62 includes two clamping plates 621 and a double-piston rod hydraulic cylinder 622 that drives the two clamping plates 621 to move. The two clamping plates 621 slide in directions that bring them closer together and further apart to clamp and release the test tube. Specifically, two fixing blocks 624 are fixedly connected to the cylinder body of the double-piston rod hydraulic cylinder 622. Each fixing block 624 is fixedly connected to two guide rods 625 that pass through the two clamping plates 621 respectively. The length direction of the guide rods 625 is set along the sliding direction of the clamping plates 621. The clamping plates 621 slide on the guide rods 625 to guide the sliding direction of the guide plates.

[0052] Specifically, the clamping assembly 62 also includes two elastic pads 623. The two elastic pads 623 are respectively fixedly connected to the side of the two clamping plates 621 that are close to each other. When the two clamping plates 621 are close to each other to clamp the test tube, the elastic pads 623 are in contact with the test tube. The setting of the elastic pads 623 makes it less likely for the clamping plates 621 to break the test tube when clamping it.

[0053] Specifically, the transmission mechanism 6 includes a horizontal moving seat 64 and a fixed seat 65. The fixed seat 65 is fixedly connected to the top of the base 1. The horizontal moving seat 64 slides on the base 1 along the width direction of the base 1. A lifting rod 63 is fixedly connected to the transmission rod 61. The lifting rod 63 moves up and down on the horizontal moving seat 64. The movement of the lifting rod 63 and the horizontal moving seat 64 is powered by one of the following power components: hydraulic cylinder, air cylinder, lead screw, etc. In this embodiment, the lifting rod 63 and the horizontal moving seat 64 slide by being driven by the lead screw.

[0054] Specifically, the feeding mechanism 3 and the discharging mechanism 4 have the same structure, both including a feeding box 8, a conveying component 9, a discharging box 7, and a test tube rack 10; the feeding box 8 of the feeding mechanism 3 stores a test tube rack 10 containing test tubes, the conveying component 9 conveys the test tube rack 10 in the feeding box 8 to the discharging box 7, and during the conveying process, the transfer mechanism 6 clamps and transfers the test tubes on the test tube rack 10.

[0055] The feeding box 8 of the discharge mechanism 4 stores an empty test tube rack 10. The conveying mechanism conveys the test tube rack 10 in the feeding box 8 to the discharge box 7. During the conveying process, the transfer mechanism 6 clamps and transfers the acidified test tubes to the test tube rack 10.

[0056] The feed box 8 and the discharge box 7 have the same structure, both including a rectangular, horizontally arranged base plate 71, two side plates 72 fixedly connected to the top two sides of the base plate 71, an end plate 73 fixedly connected to one end of the top of the base plate 71, a push plate 74 disposed between the two side plates 72, and two locking assemblies 75 disposed on the two side plates 72. The two side plates 72 are vertical plates and parallel to each other, and the length direction of the side plates 72 is parallel to that of the base plate 71. The two ends of the end plate 73 are fixedly connected to the two side plates 72 respectively. The test tube rack 10 is located between the two side plates 72 and supported on the top of the base plate 71. The length direction of the test tube rack 10 is arranged along the width direction of the base plate 71. When the test tube rack 10 is located between the two side plates 72, the two ends of the test tube rack 10 contact the side of the two side plates 72 that are close to each other. The test tube rack 10 is provided with multiple holes for accommodating test tubes, and the multiple holes are arranged along the length direction of the test tube rack 10. Multiple test tube racks 10 located on the top of the base plate 71 are arranged along the length of the base plate 71. The test tube rack 10 closest to the end plate 73 is pressed against the push plate 74 on the side away from the end plate 73. The push plate 74 applies a force to the test tube rack 10 to slide in the direction away from the end plate 73. The locking assembly 75 is used to lock the test tube rack 10 away from the end plate 73 onto the side plate 72.

[0057] Specifically, two positioning grooves 721 are provided on the side of the two side plates 72 that are close to each other. The length direction of the positioning grooves 721 is set along the length direction of the bottom plate 71. Two positioning blocks 741 are fixedly connected to both ends of the push plate 74. The two positioning blocks 741 are respectively embedded in the two positioning grooves 721 and slide in the positioning grooves 721 along the length direction of the positioning grooves 721. Two springs 723 are provided on the side of the two positioning blocks 741 near the end plate 73. The two springs 723 are respectively set in the two positioning grooves 721 and are set in a compressed state. The end of the spring 723 away from the positioning block 741 is pressed against the end of the positioning groove 721 near the end plate 73. A positioning rod 722 is provided in the positioning groove 721. The positioning rod 722 passes through the positioning block 741 along the length direction of the positioning groove 721, and the spring 723 is sleeved on the positioning rod 722. When the positioning block 741 contacts the end of the positioning groove 721 away from the end plate 73, the end of the push plate 74 away from the end plate 73 aligns with the end of the base plate 71 away from the end plate 73, so that the push plate 74 can completely push the test tube rack 10 out of the base plate 71.

[0058] When the feed box 8 and the discharge box 7 are close to the side of the base 1, the length direction of the base plate 71 is set along the width direction of the base 1, and the end plate 73 is located at the end of the base plate 71 away from the base 1. The feed box 8 and the discharge box 7, which belong to the same mechanism, are arranged along the length direction of the base 1.

[0059] The pusher plate 74 in the feed box 8 pushes the test tube rack 10, which is away from the end plate 73, out of the feed box 8. Then, the conveying assembly 9 transfers the test tube rack 10 to the discharge box 7. During the transfer process, each hole on the test tube rack 10 is sequentially aligned with the clamping assembly 62 along the width direction of the base 1. When the holes on the test tube rack 10 are aligned with the clamping assembly 62, the clamping assembly 62 removes the test tubes from the holes or inserts the test tubes into the holes. For the feeding mechanism 3, the clamping assembly 62 removes the test tubes from the holes of the test tube rack 10. After the clamping assembly 62 removes all the test tubes from the test tube rack 10, the conveying assembly 9 aligns the test tube rack 10 with the discharge box 7. For the discharge mechanism 4, the clamping assembly 62 inserts the test tubes into the holes of the test tube rack 10. When all the holes on the test tube rack 10 are filled with test tubes, the conveying assembly 9 aligns the test tube rack 10 with the discharge box 7. When the test tube rack 10 is aligned with the discharge box 7, the conveying assembly 9 pushes the test tube rack 10 into the discharge box 7.

[0060] Specifically, the conveying assembly 9 includes a conveying rod 91. The length direction of the conveying rod 91 is arranged along the arrangement direction of the feed box 8 and the discharge box 7. The conveying rod 91 slides along its own length direction and is close to the side of the feed box 8 and the discharge box 7 away from the end plate 73. A receiving groove 911 is formed near the feed box 8 and the discharge box 7 on the conveying rod 91. The receiving groove 911 can be aligned with the feed box 8 and the discharge box 7 respectively. When the receiving groove 911 is aligned with the feed box 8, the push plate 74 pushes the test tube rack 10 to move so that the test tube rack 10 away from the push plate 74 enters the receiving groove 911. During the sliding process, the conveying rod 91 always remains in contact with the feed box 8 and the discharge box 7, so that when the receiving groove 911 is not aligned with the feed box 8 and the discharge box 7, the test tube rack 10 in the feed box 8 and the discharge box 7 will not be sent out from the feed box 8 and the discharge box 7.

[0061] Specifically, two conveying grooves 11 are provided on both sides of the base 1, extending upward through the base 1. Two conveying rods 91 are respectively located in the two conveying grooves 11. The length direction of the conveying grooves 11 is set along the length direction of the base 1, and the conveying rods 91 slide along the length direction of the conveying grooves 11. The receiving groove 911 extends vertically through the conveying rods 91, and the bottom of the conveying groove 11 is flush with the top of the base plate 71, so that the test tube rack 10 can be inserted into the receiving groove 911. When the test tube rack 10 is inserted into the receiving groove 911, the side of the test tube rack 10 protruding from the receiving groove 911 is aligned with the side of the conveying rod 91.

[0062] The conveying assembly 9 also includes a discharge hydraulic cylinder 93. When the receiving groove 911 is aligned with the discharge box 7, the discharge hydraulic cylinder 93 pushes the test tube rack 10 in the receiving groove 911 into the space between the two side plates 72. A through groove 912 is provided on the side of the receiving groove 911 away from the feeding box 8 and the discharge box 7. The through groove 912 passes through the conveying rod 91 along the width direction of the base 1. The two ends of the through groove 912 are aligned with the two ends of the receiving groove 911. A push rod 92 is provided in the through groove 912 and cooperates with the through groove 912. The push rod 92 can slide along the width direction of the base 1 in the through groove 912 and the receiving groove 911, so that the test tube rack 10 can be pushed into the discharge box 7 under the action of the discharge hydraulic cylinder 93. Specifically, guide grooves 913 are provided at both ends of the through groove 912, and the guide grooves 913 extend into both ends of the receiving groove 911. Two guide blocks 921 are fixedly connected to both ends of the push rod 92 and are respectively embedded in the two guide grooves 913. The guide blocks 921 slide in the guide grooves 913 along the width direction of the base 1. When the guide blocks 921 are respectively in contact with both ends of the guide grooves 913, the push rod 92 is aligned with both sides of the conveying rod 91.

[0063] When the receiving trough 911 is aligned with the discharge box 7, the piston rod of the discharge hydraulic cylinder 93 contacts the push rod 92 and then continues to push the push rod 92. Under the action of the push rod 92, the test tube rack 10 in the receiving trough 911 completely leaves the receiving trough 911 and completely enters the discharge box 7. At this time, the conveying rod 91 slides, and the piston rod and the push rod 92 slide relative to each other. Through the sliding of the conveying rod 91, the receiving trough 911 and the feeding box 8 are misaligned. Thus, the test tube rack 10 that has entered the discharge box 7 will not leave the discharge box 7 again due to the obstruction of the conveying rod 91.

[0064] Specifically, the transmission rod 91 is driven to slide by one of the following power components: a cylinder, a hydraulic cylinder, or a lead screw. In this embodiment, the transmission rod 91 is driven to slide by a lead screw.

[0065] To prevent the feed box 8 and discharge box 7 from detaching from the base 1 under the action of the push plate 74, a long groove 12 is provided on the base 1 corresponding to the position of each base plate 71. A disc groove 13 is provided on the side of the long groove 12 away from the base plate 71. A limiting strip 761 is provided on the end of the base plate 71 away from the end plate 73. The limiting strip 761 can pass through the long groove 12 and enter the disc groove 13. The limiting strip 761 is rotatably connected to the base plate 71 so that the limiting strip 761 rotates in the disc groove 13 and is limited and pressed against the side of the disc groove 13 near the base plate 71. Through the contact between the limiting strip 761 and the side of the disc groove 13 near the end plate 73, the base plate 71 will not detach from the base 1 under the action of the push plate 74. Specifically, the axis of the circular groove 13 is set along the width direction of the base 1, and the length direction of the long groove 12 is set along the radial direction of the circular groove 13. A rotating rod 76 is provided on the base plate 71, passing through the base plate 71 along the length direction of the base plate 71. The rotating rod 76 is a round rod, and the axis of rotation of the rotating rod 76 is set along the length direction of the base plate 71. The rotating rod 76 can slide on the base plate 71 along its own length direction. When the base plate 71 is in contact with the base 1, the rotating rod 76 on the base plate 71 and the circular groove 13 corresponding to the base plate 71 are coaxial. The length direction of the limiting strip 761 on the rotating rod 76 is set along the radial direction of the rotating rod 76. By sliding the rotating rod 76, the limiting strip 761 is pushed into the circular groove 13 through the long groove 12. Then, by rotating the rotating rod 76, the limiting strip 761 and the long strip intersect each other, so that the limiting strip 761 contacts the side of the circular groove 13 near the end plate 73.

[0066] Specifically, a baffle 762 is fixedly connected to the rotating rod 76. When the limiting strip 761 contacts the side of the disc groove 13 near the end plate 73, the baffle 762 fits against the end of the base plate 71 near the end plate 73. Under the combined action of the limiting strip 761 and the baffle 762, the base plate 71 is fixed on the base 1.

[0067] Specifically, the locking assembly 75 on the side plate 72 is a locking rod 751. A storage slot 724 is provided on the side of the side plate 72 near the test tube rack 10, and the locking rod 751 is located in the storage slot 724. A pull rod 752 is provided on the side of the locking rod 751 away from the test tube rack 10, and the pull rod 752 passes through the side plate 72 along the width direction of the base plate 71. Two locking slots 101 are provided on both sides of the test tube rack 10. The locking slots 101 cooperate with the locking rod 751. When it is necessary to lock the test tube rack 10 at the top of the base plate 71 away from the end plate 73, the locking rod 751 in the storage slot 724 is pushed by the pull rod 752 into the locking slot 101. Under the action of the pull rod 752 and the locking rod 751, the test tube rack 10 will not be pushed out from the top of the base plate 71.

[0068] The acid-adding mechanism 5 includes a support base 51 fixedly connected to the top of the base 1, a lifting base 53 mounted on the support base 51 and capable of moving up and down on the support base 51, an acid-adding nozzle 52 fixedly connected to the lifting base 53 and located directly above the acid-adding seat 2, an acid bottle 54 mounted on the base 1, a hose 55 for conveying acid from the acid bottle 54 to the acid-adding nozzle 52, and a peristaltic pump for driving the acid from the acid bottle 54 into the acid-adding nozzle 52. The peristaltic pump is fixed to the lifting base 53 and connected to the hose 55.

[0069] A lead screw is provided on the support base 51, which drives the lifting seat 53 to slide up and down on the support base 51.

[0070] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An automatic acid dosing device, characterized in that: include: Feeding mechanism (3), the feeding mechanism (3) is used to feed the test tube to be acidified; Discharge mechanism (4), the discharge mechanism (4) is used to send out the test tube after acid addition; Acid addition seat (2), the test tube is inserted into the acid addition seat (2) when acid is added; The transfer mechanism (6) is used to transfer test tubes between the feeding mechanism (3) and the acid addition seat (2) and between the acid addition seat (2) and the discharge mechanism (4); And an acid-adding nozzle (52), which is disposed above the acid-adding seat (2) and is used to add acid to the test tubes on the acid-adding seat (2); The test tubes are transferred horizontally along a straight line between the feeding mechanism (3) and the acid adding seat (2), and between the acid adding seat (2) and the discharge mechanism (4). The transfer mechanism (6) includes a transfer rod (61), which is capable of moving vertically and horizontally. The horizontal movement direction of the transfer rod (61) is parallel to the horizontal movement direction of the test tube between the acid addition seat (2) and the discharge mechanism (4). And a clamping assembly (62), which is used to clamp the test tube. The clamping assembly (62) is set on the transfer rod (61) and there are two of them. When the transfer rod (61) is located between the acid addition seat (2) and the feeding mechanism (3), the two clamping assemblies (62) can clamp the test tubes on the feeding mechanism (3) and the acid addition seat (2) respectively. When the transfer rod (61) is located between the acid addition seat (2) and the discharge mechanism (4), the two clamping assemblies (62) can clamp the test tubes on the acid addition seat (2) and the discharge mechanism (4) respectively.

2. The automatic acid dosing device according to claim 1, characterized in that: The clamping assembly (62) includes two clamping plates (621), which slide in directions that are close to each other and far apart to clamp and release the test tube. And a double piston rod hydraulic cylinder (622), which is used to drive the two clamping plates (621) to slide.

3. An automatic acid dosing device according to claim 2, characterized in that: The clamping assembly (62) further includes two elastic pads (623), which are respectively fixedly connected to the two clamping plates (621) on the side that are close to each other.

4. An automatic acid dosing device according to claim 1, characterized in that: The feeding mechanism (3) and the discharging mechanism (4) have the same structure, both including a feeding box (8), a conveying assembly (9), a discharging box (7), and a test tube rack (10); The feeding box (8) of the feeding mechanism (3) stores a test tube rack (10) containing test tubes. The conveying component (9) conveys the test tube rack (10) in the feeding box (8) to the discharge box (7). During the conveying process, the transfer mechanism (6) clamps and transfers the test tubes on the test tube rack (10). Empty test tube racks (10) are stored in the feed box (8) of the discharge mechanism (4). The conveying mechanism conveys the test tube racks (10) in the feed box (8) to the discharge box (7). During the conveying process, the transfer mechanism (6) clamps and transfers the acid-added test tubes to the test tube racks (10).

5. An automatic acid dosing device according to claim 4, characterized in that: The feed box (8) and the discharge box (7) have the same structure, including a base plate (71). The base plate (71) is set horizontally, and the test tube rack (10) is supported on the top of the base plate (71). Side plate (72), two side plates (72) are provided and fixedly connected to the top of the base plate (71), the two side plates (72) are located on both sides of the base plate (71), the two side plates (72) are vertical plates and parallel to each other, and the test tube rack (10) is located between the two side plates (72); End plate (73), the end plate (73) is fixedly connected to the top of the base plate (71) and located at one end of the base plate (71), and the two ends of the end plate (73) are fixedly connected to the two side plates (72) respectively; Push plate (74), which is disposed between two side plates (72), applies a pushing force to the test tube rack (10) to push the test tube rack (10) away from the bottom plate (71) away from the end plate (73); And a locking assembly (75) for locking the test tube rack (10) away from the end plate (73) onto the two side plates (72).

6. An automatic acid dosing device according to claim 5, characterized in that: The conveying assembly (9) includes a conveying rod (91). The length direction of the conveying rod (91) is arranged along the arrangement direction of the feed box (8) and the discharge box (7). The conveying rod (91) slides along its own length direction and is close to the side of the feed box (8) and the discharge box (7) away from the end plate (73). The conveying rod (91) has a receiving groove (911) near the feed box (8) and the discharge box (7). The receiving groove (911) can be aligned with the feed box (8) and the discharge box (7) respectively. When the receiving groove (911) is aligned with the feed box (8), the push plate (74) pushes the test tube rack (10) to move so that the test tube rack (10) away from the push plate (74) enters the receiving groove (911). And the discharge hydraulic cylinder (93), when the receiving groove (911) is aligned with the discharge box (7), the discharge hydraulic cylinder (93) pushes the test tube rack (10) in the receiving groove (911) into the space between the two side plates (72).

7. An automatic acid dosing device according to claim 6, characterized in that: It also includes a base (1), an acid addition seat (2), and a transfer mechanism (6) set on the top of the base (1). The feeding mechanism (3) and the discharging mechanism (4) are located on both sides of the base (1). The two transmission rods (91) of the feeding mechanism (3) and the discharging mechanism (4) slide on both sides of the base (1). The feeding box (8) and the discharging box (7) of the feeding mechanism (3) and the discharging mechanism (4) are detachably connected to the base (1).

8. An automatic acid dosing device according to claim 7, characterized in that: A long groove (12) is provided on the base (1) corresponding to each base plate (71), and a disc groove (13) is provided on the side of the long groove (12) away from the base plate (71); A limiting strip (761) is provided at the end of the base plate (71) away from the end plate (73). The limiting strip (761) can pass through the long groove (12) and enter the disc groove (13). The limiting strip (761) is rotatably connected to the base plate (71) so that the limiting strip (761) can rotate in the disc groove (13) and be limited and pressed against the side of the disc groove (13) near the base plate (71).

9. An automatic acid dosing device according to claim 8, characterized in that: A rotating rod (76) is provided inside the base plate (71) and extends through the base plate (71) along its length. The rotating rod (76) is fixedly connected to the limiting strip (761). The rotating rod (76) can rotate on the base plate (71) to drive the limiting strip (761) to rotate. The rotating rod (76) can slide on the base plate (71) to push the limiting strip (761) in and out of the long groove (12) and the disc groove (13).

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