Automatic titration table for detecting chemical oxygen demand of sewage

Abstract

The utility model discloses an automatic titration table for detecting chemical oxygen demand of sewage, and belongs to the technical field of titration tables. The automatic titration device comprises a table top, a magnetic stirring machine and a test tube moving assembly are installed on the table top, a beaker is placed on the magnetic stirring machine, a stirrer is placed in the beaker, a titration assembly is arranged above the beaker, and the titration assembly comprises a titration frame. The titration frame is provided with a rubber head dropper and an extruder for extruding the rubber head dropper, the top of the titration frame is connected with a transplanting assembly, and the transplanting assembly controls the titration frame to enable the rubber head dropper to move back and forth in a test tube of the test tube moving assembly and on the beaker. According to the automatic medicine adding device, medicine can be automatically sucked and then dripped into the beaker, automatic medicine adding is achieved, and potential safety hazards are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of titration platforms, in particular to an automatic titration platform for detecting chemical oxygen demand of sewage. Background Art

[0002] The titration stand is an important equipment commonly used in chemical laboratories, mainly used for titration experiments. The sewage chemical oxygen demand titration stand is an experimental equipment or platform used in chemical laboratories to measure the chemical oxygen demand of sewage.

[0003] Existing titration benches for detecting chemical oxygen demand in sewage mostly use manual dosing during testing and are unable to perform automatic dosing. Manual operation poses certain safety hazards when adding toxic and corrosive chemicals. In addition, manual stirring sometimes leads to insufficient stirring, thereby affecting the test results. Summary of the Invention

[0004] In view of the deficiencies of the existing technology, the utility model provides an automatic titration table for detecting the chemical oxygen demand of sewage, so as to solve the safety hazards of adding toxic and corrosive drugs during manual dosing and the problem of insufficient stirring caused by manual stirring during stirring.

[0005] To achieve the above objectives, the present invention provides an automatic titration stand for detecting chemical oxygen demand in sewage. The stand comprises a tabletop on which a magnetic stirrer and a test tube moving assembly are mounted. A titration assembly is located above the magnetic stirrer. The titration assembly comprises a titration stand, on which a rubber-tipped dropper and a squeezer for squeezing the dropper are mounted. A transplanting assembly is connected to the top of the titration stand, which controls the titration stand to move the dropper back and forth within the test tube of the test tube moving assembly and over a beaker.

[0006] Preferably, the transplanting assembly includes a mounting plate, two support frames are provided at the bottom of the mounting plate, the mounting plate is vertically fixed to the table through the support frames, a slide rail is installed on the side of the mounting plate close to the magnetic stirrer, a sliding plate is provided for sliding in the slide rail, one end of the sliding plate is connected to a transmission assembly for controlling the sliding plate to slide back and forth, a strip-shaped inclined hole is provided on the sliding plate, a long horizontal through hole is provided on the mounting plate, and the horizontal through hole is connected to a long vertical through hole at one end close to the test tube moving assembly, a moving rod is installed on the top of the titration stand, and a rotating shaft is provided at the other end of the moving rod, and the rotating shaft passes through the inclined hole and is movably arranged in the horizontal through hole.

[0007] Preferably, the transmission assembly includes a rotating wheel and a transmission rod, a rotating wheel bracket is fixed on the table top, a rotating wheel motor is installed on the rotating wheel bracket, a rotating wheel is installed on the output end of the rotating wheel motor, a rotating wheel column is fixed on the side wall of the rotating wheel, one end of the transmission rod is rotatably sleeved on the rotating wheel column, and the other end is fixedly connected to the middle part of the end face of the sliding plate.

[0008] Preferably, the titration stand comprises a top plate and a bottom plate which are spaced apart from each other, and four corners of the top surface of the bottom plate are provided with connecting posts for connecting the top plate.

[0009] Preferably, a through hole is provided in the middle area of ​​the frame bottom plate, a rubber head dropper is installed in the through hole, the rubber head end of the rubber head dropper is provided above the frame bottom plate, and the dropper end of the rubber head dropper is provided below the frame bottom plate.

[0010] Preferably, the squeezer includes an squeeze motor and a squeeze motor bracket, the squeeze motor bracket being fixed to a frame bottom plate, the output end of the squeeze motor being connected to a squeeze plate, a fixed plate being fixed to the frame bottom plate and cooperating with the squeeze plate, and a rubber dropper being installed between the squeeze plate and the fixed plate. The squeeze motor controls the squeeze plate to move closer or further away to squeeze or release the rubber dropper.

[0011] Preferably, the test tube moving assembly comprises a track, a moving frame is slidably mounted in the track, and a test tube rack is fixed on the moving frame.

[0012] Preferably, the inner side of the movable frame is symmetrically provided with racks along the moving direction of the track, and a gear is meshed and connected between the two racks. A gear motor is installed in the table, and the output end of the gear motor is connected to the gear.

[0013] Preferably, the test tube rack includes two symmetrically arranged bracket blocks, a top plate and a support plate spaced below the top plate are fixed between the two bracket blocks, a plurality of test tube placement holes are evenly spaced on the top plate, and a buffer pad is provided on the support plate.

[0014] Preferably, a beaker clamp is fixed to the top of the magnetic stirrer, and the beaker clamp includes two open ends of a clamp soft ring symmetrically arranged, the middle area of ​​the bottom end of the clamp soft ring is fixed to the top of the magnetic stirrer, and the two ends of the clamp soft ring can be respectively fastened by bolts, a beaker is placed in the clamp soft ring, and a stirrer is placed in the beaker.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model can automatically absorb the medicine and then drip the medicine into the beaker, thereby realizing automatic medicine addition and avoiding the occurrence of safety hazards.

[0017] 2. The utility model controls the stirring bar in the beaker through the magnetic stirrer, so that the stirring is more sufficient and the accuracy of the test data is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of the present invention from the front view;

[0019] Figure 2 This is a three-dimensional diagram of the present invention from the back side;

[0020] Figure 3 A three-dimensional diagram of the front side of the present invention from another perspective;

[0021] Figure 4 This is a diagram of the mechanism of the magnetic stirrer of the present invention;

[0022] Figure 5 This is a structural diagram of the track and moving frame of the utility model.

[0023] Reference numerals:

[0024] 1 table,

[0025] 2 magnetic stirrers, 21 stirring bars,

[0026] 3 test tube moving assembly, 31 track, 32 moving frame, 321 rack, 322 gear, 323 gear motor,

[0027] 33 test tube rack, 331 bracket block, 332 top plate, 333 support plate, 334 cushion pad,

[0028] 4 beakers,

[0029] 5 titration assembly, 51 titration stand, 511 moving rod, 512 rotating shaft, 513 stand top plate, 514 stand bottom plate, 515 connecting column, 52 rubber head dropper, 53 extruder, 531 extrusion motor, 532 extrusion motor bracket, 533 extrusion plate, 534 fixed plate,

[0030] 6 transplanting assembly, 61 mounting plate, 611 horizontal through hole, 612 vertical through hole, 62 support frame, 63 slide rail, 64 sliding plate, 641 oblique hole, 65 transmission assembly, 651 runner, 652 transmission rod, 653 runner bracket, 654 runner motor, 655 runner column,

[0031] 7 beaker clamp, 71 clamp soft ring, 72 bolt. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0033] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0036] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] Example

[0039] like Figures 1 to 5The automatic titration stand for detecting chemical oxygen demand in sewage shown in the figure comprises a table 1, on which are mounted a magnetic stirrer 2 and a test tube moving assembly 3. A beaker 4 is placed on the magnetic stirrer 2, and a stirrer 21 is placed in the beaker 4. A beaker clamp 7 is fixed to the top of the magnetic stirrer 2. The beaker clamp 7 includes two open ends symmetrically spaced apart and a flexible clamp ring 71. The middle region of the bottom end of the flexible clamp ring 71 is fixed to the top of the magnetic stirrer 2, and the two ends of the flexible clamp ring 71 can be respectively fastened by bolts 72. A titration assembly 5 is provided above the beaker 4. The titration assembly 5 includes a titration stand 51, on which is mounted a rubber-tipped dropper 52 and an extruder 53 for squeezing the rubber-tipped dropper 52. A transplanting assembly 6 is connected to the top of the titration stand 51. The transplanting assembly 6 controls the titration stand 51 to move the rubber-tipped dropper 52 back and forth within the test tube of the test tube moving assembly 3 and on the beaker 4.

[0040] The transplanting assembly 6 includes a mounting plate 61, and two support frames 62 are provided at the bottom of the mounting plate 61. The mounting plate 61 is vertically fixed on the table 1 through the support frame 62. A slide rail 63 is installed on the side of the mounting plate 61 close to the magnetic stirrer 2. A sliding plate 64 is provided for sliding in the slide rail 63. One end of the sliding plate 64 is connected to a transmission assembly 65 for controlling the sliding plate 64 to slide back and forth. The transmission assembly 65 includes a turntable 651 and a transmission rod 652. A turntable bracket 653 is fixed on the table 1, and a turntable motor 654 is installed on the turntable bracket 653. A turntable 651 is installed at the output end of the turntable motor 654, and a turntable column 655 is fixed on the side wall of the turntable 651. One end of the transmission rod 652 is rotatably sleeved on the turntable column 655, and the other end is fixedly connected to the middle part of the end face of the sliding plate 64. A strip-shaped inclined hole 641 is provided on the sliding plate 64, and a long horizontal through hole 611 is provided on the mounting plate 61. One end of the horizontal through hole 611 close to the test tube moving assembly 3 is connected to a long vertical through hole 612. A moving rod 511 is installed on the top of the titration stand 51, and a rotating shaft 512 is provided at the other end of the moving rod 511. The rotating shaft 512 passes through the inclined hole 641 and is movably arranged in the horizontal through hole 611.

[0041] The titration stand 51 includes a top plate 513 and a bottom plate 514, each spaced apart. Connecting posts 515 are located at each of the four corners of the top surface of the bottom plate 514, connecting to the top plate 513. A through-hole is provided in the central region of the bottom plate 514, into which a rubber-tipped dropper 52 is mounted. The rubber-tipped end of the dropper 52 is located above the bottom plate 514, while the dropper end of the dropper 52 is located below the bottom plate 514. The squeezer 53 includes an squeeze motor 531 and a squeeze motor bracket 532. The squeeze motor bracket 532 is fixed to the bottom plate 514. The output end of the squeeze motor 531 is connected to the squeeze plate 533. A fixed plate 534 is fixed to the bottom plate 514, cooperating with the squeeze plate 533. The rubber-tipped dropper 52 is mounted between the squeeze plate 533 and the fixed plate 534.

[0042] The test tube moving assembly 3 includes a track 31, within which a moving frame 32 is slidably mounted, and a test tube rack 33 is fixed to the moving frame 32. Racks 321 are symmetrically arranged on the inside of the moving frame 32 along the direction of track movement. A gear 322 is meshed between the two racks 321. A gear motor 323 is mounted within the table 1, and the output end of the gear motor 323 is connected to the gear 322. The test tube rack 33 comprises two symmetrically arranged bracket blocks 331. A top plate 332 is fixed between the two bracket blocks 331, and a support plate 333 is spaced below the top plate 332. The top plate 332 is evenly spaced with multiple test tube placement holes, and the support plate 333 is provided with a cushioning pad 334.

[0043] The following describes the process flow of the utility model when it works:

[0044] Place the required testing drugs into different test tubes in turn, mark them, and place the test tubes containing the drugs into the test tube placement holes on the top plate 332 in turn. Pull out the bolt 72 on the clamp soft ring 71, take out the beaker 4, and put the sewage to be tested in the beaker 4. Put the beaker 4 back into the beaker clamp 7, insert the bolt 72 until the beaker clamp 7 clamps the beaker 4, and place the stirring bar 21 into the beaker.

[0045] The gear motor 323 is turned on, and the gear motor 323 drives the gear 322 and thus drives the moving frame 32 to move the test tube rack to a designated position.

[0046] Turn on the rotary motor 654, which drives the rotary wheel 651 to rotate, thereby driving the transmission rod 652. The transmission rod 652 drags the sliding plate 64 to move to the left. During the movement of the sliding plate 64 to the left, the rotating shaft 512 moves from the left end of the horizontal through hole 611 to the right end of the vertical through hole 612. At this time, the inclined hole 641 causes the rotating shaft 512 to slowly descend as the sliding plate 64 moves to the left. The rotating shaft 512 drives the moving rod 511, thereby driving the titration stand 51 to make the dropper end of the rubber-tipped dropper 52 penetrate into the test tube containing the test drug.

[0047] Turn on the extrusion motor 531, and the squeezer 53 squeezes and releases the rubber tip end of the rubber tip dropper 52. After the test drug in the test tube is sucked, the transmission assembly 65 controls the sliding plate 64 to move to the right so that the rubber tip dropper 52 returns to the top of the beaker 4. The squeezer 53 squeezes the rubber tip end of the rubber tip dropper 52 and drops the test drug into the beaker. Turn on the magnetic stirrer 2, and the magnetic stirrer 2 controls the stirring bar 21 in the beaker to rotate to fully stir the test drug in the sewage.

[0048] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. An automatic titration station for detecting chemical oxygen demand in sewage, characterized by: The invention comprises a table (1), on which a magnetic stirrer (2) and a test tube moving assembly (3) are installed, a titration assembly (5) is provided above the magnetic stirrer (2), the titration assembly (5) comprises a titration stand (51), a rubber-tipped dropper (52) and an extruder (53) for squeezing the rubber-tipped dropper (52) are installed on the titration stand (51), a transplanting assembly (6) is connected to the top of the titration stand (51), and the transplanting assembly (6) controls the titration stand (51) to move the rubber-tipped dropper (52) back and forth in the test tube of the test tube moving assembly (3) and on the beaker (4).

2. The automatic titration stand for detecting chemical oxygen demand of sewage according to claim 1, characterized in that: The transplanting assembly (6) comprises a mounting plate (61), two support frames (62) are provided at the bottom of the mounting plate (61), the mounting plate (61) is vertically fixed on the table (1) through the support frames (62), a slide rail (63) is provided on the side of the mounting plate (61) close to the magnetic stirrer (2), a sliding plate (64) is provided to slide in the sliding rail (63), one end of the sliding plate (64) is connected to a transmission assembly (65) for controlling the sliding plate (64) to slide back and forth, and the sliding plate (64) is provided to slide in the sliding rail (63). A strip-shaped oblique hole (641) is provided on the plate (64), a long horizontal through hole (611) is provided on the mounting plate (61), one end of the horizontal through hole (611) close to the test tube moving assembly (3) is connected to a long vertical through hole (612), a moving rod (511) is installed on the top of the titration stand (51), the other end of the moving rod (511) is provided with a rotating shaft (512), and the rotating shaft (512) passes through the oblique hole (641) and is movably arranged in the horizontal through hole (611).

3. The automatic titration stand for detecting chemical oxygen demand in sewage according to claim 2, characterized in that: The transmission assembly (65) comprises a rotating wheel (651) and a transmission rod (652). A rotating wheel bracket (653) is fixed on the table (1). A rotating wheel motor (654) is installed on the rotating wheel bracket (653). A rotating wheel (651) is installed on the output end of the rotating wheel motor (654). A rotating wheel column (655) is fixed on the side wall of the rotating wheel (651). One end of the transmission rod (652) is rotatably sleeved on the rotating wheel column (655), and the other end is fixedly connected to the middle part of the end surface of the sliding plate (64).

4. The automatic titration stand for detecting chemical oxygen demand in sewage according to claim 1, characterized in that: The titration stand (51) comprises a stand top plate (513) and a stand bottom plate (514) which are spaced apart from each other. The four corners of the top surface of the stand bottom plate (514) are provided with connecting posts (515) for connecting the stand top plate (513).

5. The automatic titration stand for detecting chemical oxygen demand in sewage according to claim 4, characterized in that: A through hole is provided in the middle area of ​​the frame bottom plate (514), a rubber head dropper (52) is installed in the through hole, the rubber head end of the rubber head dropper (52) is arranged above the frame bottom plate (514), and the dropper end of the rubber head dropper (52) is arranged below the frame bottom plate (514).

6. The automatic titration stand for detecting chemical oxygen demand in sewage according to claim 4, characterized in that: The extruder (53) comprises an extrusion motor (531) and an extrusion motor bracket (532); the extrusion motor bracket (532) is fixed on a frame bottom plate (514); an output end of the extrusion motor (531) is connected to an extrusion plate (533); a fixing plate (534) matched with the extrusion plate (533) is fixed on the frame bottom plate (514); and a rubber head dropper (52) is installed between the extrusion plate (533) and the fixing plate (534).

7. The automatic titration stand for detecting chemical oxygen demand in sewage according to claim 1, characterized in that: The test tube moving assembly (3) comprises a track (31), a moving frame (32) is slidably mounted in the track (31), and a test tube rack (33) is fixed on the moving frame (32).

8. The automatic titration stand for detecting chemical oxygen demand in sewage according to claim 7, characterized in that: The inner side of the movable frame (32) is symmetrically provided with racks (321) along the moving direction of the track, and a gear (322) is meshed and connected between the two racks (321). A gear motor (323) is installed in the table (1), and the output end of the gear motor (323) is connected to the gear (322).

9. The automatic titration stand for detecting chemical oxygen demand in sewage according to claim 7, characterized in that: The test tube rack (33) comprises two symmetrically arranged support blocks (331), a top plate (332) and a support plate (333) spaced below the top plate (332) are fixed between the two support blocks (331), a plurality of test tube placement holes are evenly spaced on the top plate (332), and a buffer pad (334) is provided on the support plate (333).

10. The automatic titration stand for detecting chemical oxygen demand in sewage according to claim 1, characterized in that: A beaker clamp (7) is fixed to the top of the magnetic stirrer (2), and the beaker clamp (7) includes two open ends of a clamp soft ring (71) symmetrically arranged at intervals. The middle area of ​​the bottom end of the clamp soft ring (71) is fixed to the top of the magnetic stirrer (2), and the two ends of the clamp soft ring (71) can be respectively fastened by bolts (72). A beaker (4) is placed in the clamp soft ring (71), and a stirrer (21) is placed in the beaker (4).

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