Detection azotometer

Abstract

The utility model discloses a detection azotometer which comprises an azotometer body, an electric lifting assembly is fixedly installed on one side of the outer surface of the azotometer body, a first motor is fixedly installed at the movable end of the electric lifting assembly, and a driving shaft of the first motor is fixedly connected with a mounting seat. A second motor is fixedly connected to the bottom of the mounting base, a spline shaft is fixedly connected to the driving end of the second motor, and the spline shaft penetrates through the bottom of the mounting base and extends into the mounting base. According to the utility model, through the arrangement of the electric lifting assembly, the first motor, the mounting seat, the second motor, the spline shaft, the spline housing, the inclined bottom placing seat, the tension spring assembly, the supporting rod, the conical flask clamping assembly, the connecting block, the bidirectional screw seat and the burette clamping plate, the titration and the azotometer are integrally designed, so that the occupied space of the test bed is reduced; secondly, after nitrogen absorption is completed, the conical flask filled with the absorption liquid can be automatically moved to the position below the burette, and convenience is achieved.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen analyzer technology, and in particular to a nitrogen analyzer for detection. Background Technology

[0002] A nitrogen analyzer is a chemical analysis instrument mainly used to determine the nitrogen content in samples. It is an important piece of equipment for research and analysis in fields such as food, environment, agriculture, and medicine.

[0003] Currently, the most common nitrogen analyzer on the market is the Kjeldahl nitrogen analyzer. The Kjeldahl nitrogen analyzer is based on the principle that the nitrogen content in proteins is constant; it calculates the protein content by measuring the nitrogen content in a sample.

[0004] Existing Kjeldahl nitrogen analyzers require the conical flask containing the absorbent to be removed from the analyzer after ammonia is absorbed by the absorbent before titration. During titration, the experimenter needs to continuously shake the conical flask and constantly monitor the color change of the solution, which is cumbersome and increases the workload of the experimenter. It is also easy to miss the titration endpoint due to distraction. Therefore, a nitrogen analyzer with an integrated design that can assist in the titration operation is proposed. Utility Model Content

[0005] This invention is a nitrogen analyzer proposed to address the shortcomings of existing technologies.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a nitrogen analyzer, comprising a nitrogen analyzer body, an electric lifting assembly fixedly installed on one side of the outer surface of the nitrogen analyzer body, a first motor fixedly installed on the movable end of the electric lifting assembly, a mounting base fixedly connected to the drive shaft of the first motor, a second motor fixedly connected to the bottom of the mounting base, a spline shaft fixedly connected to the drive end of the second motor, and the spline shaft extending through the bottom of the mounting base into the interior, a spline sleeve slidably fitted on the outer surface of the spline shaft, a sloping bottom placement seat fixedly connected to the top of the spline sleeve, a tension spring assembly jointly installed between the sloping bottom placement seat and the spline shaft, and two support rods abutting the bottom of the sloping bottom placement seat;

[0007] A conical bottle clamping assembly is installed at the top of the sloping bottom placement seat;

[0008] A connecting block is fixedly connected to one side of the outer surface of the nitrogen analyzer body, and a bidirectional screw seat is fixedly installed on one side of the outer surface of the connecting block. Two burette clamps are symmetrically threaded on the outer surface of the bidirectional screw seat.

[0009] Furthermore, the electric lifting assembly includes an electric push rod, which is fixedly installed on the nitrogen analyzer body. The movable end of the electric push rod is fixedly connected to a slide block, and a first motor is fixedly installed on the top of the slide block. The mounting shaft of the mounting base is rotatably connected to the slide block. Two slide rails are symmetrically slidably connected to one side of the outer surface of the slide block, and the slide rails are fixedly connected to the nitrogen analyzer body. The slide rails have a limiting effect on the slide block, which can ensure the stability of the slide block movement.

[0010] Furthermore, the spline shaft is rotatably connected to the mounting base, and the mounting base provides support for the spline shaft, which facilitates its installation.

[0011] Furthermore, the tension spring assembly includes a tension spring, which is fixedly installed at the bottom of the sloping base. An annular plate is fixedly connected to the bottom of the tension spring, and the annular plate is fixedly sleeved on the outer surface of the spline shaft. The tension spring provides a downward pulling force to the sloping base through its elasticity.

[0012] Furthermore, the two support rods are arranged at different heights, so that when the inclined base is in the set position, it is in a horizontal state under the action of the two support rods.

[0013] Furthermore, the conical bottle clamping assembly includes a first knob, which is disposed on one side of the outer surface of the inclined bottom placement seat. One end of the first knob is fixedly connected to a first bidirectional screw, which extends through the outer surface of the inclined bottom placement seat and into the interior. The first bidirectional screw is rotatably connected to the inclined bottom placement seat. Two clamping blocks are symmetrically threaded onto the outer surface of the first bidirectional screw, and the clamping blocks are slidably connected to the inclined bottom placement seat. The inclined bottom placement seat has a limiting effect on the clamping blocks, which can ensure the stability of the movement of the clamping blocks.

[0014] Furthermore, the bidirectional screw seat includes a frame, which is fixedly connected to the connecting block, and both burette clamps are slidably connected to the frame. A second knob is provided on one side of the outer surface of the frame, and a second bidirectional screw is fixedly connected to one end of the second knob. The second bidirectional screw extends through the outer wall of the frame and into the interior. The second bidirectional screw is rotatably connected to the frame, and the two burette clamps are symmetrically threaded onto the outer surface of the second bidirectional screw. The frame has a limiting effect on the burette clamps, which can ensure the stability of the movement of the burette clamps.

[0015] The beneficial effects of this utility model are:

[0016] In use, this utility model provides a nitrogen analyzer that integrates titration and nitrogen determination into a single unit through an electric lifting assembly, a first motor, a mounting base, a second motor, a splined shaft, a splined sleeve, a slanted bottom placement base, a tension spring assembly, a support rod, a conical flask clamping assembly, a connecting block, a bidirectional screw seat, and a burette clamping plate, thus reducing the space occupied on the experimental platform. Secondly, after nitrogen absorption is complete, the conical flask containing the absorption liquid can be automatically moved to the bottom of the burette, which is convenient. Finally, during the titration operation, the conical flask can be shaken to assist in the process, reducing manual operation, lowering the workload of the experimenter, making the operation easier, and preventing the experimenter from missing the titration endpoint due to distraction caused by shaking. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Fig. 1 : A first-view structural diagram of the present invention;

[0019] Fig. 2 : Overall second-view structural diagram of this utility model;

[0020] Fig. 3 : A schematic diagram of the installation of the bidirectional screw seat of this utility model;

[0021] Fig. 4 : Installation diagram of the mounting base of this utility model.

[0022] The attached figures are labeled as follows:

[0023] 1. Nitrogen analyzer body; 2. Burette clamp; 3. Electric push rod; 4. Slide rail; 5. First motor; 6. Frame; 7. Sloping bottom placement seat; 8. Mounting seat; 9. Connecting block; 10. Second knob; 11. Second double-acting screw; 12. First knob; 13. First double-acting screw; 14. Tension spring; 15. Spline sleeve; 16. Support rod; 17. Clamping block; 18. Slide seat; 19. Second motor; 20. Spline shaft; 21. Annular plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figs. 1 to 4 As shown, a nitrogen analyzer is disclosed, comprising an analyzer body 1. An electric lifting assembly is fixedly installed on one side of the outer surface of the analyzer body 1. A first motor 5 is fixedly installed on the movable end of the electric lifting assembly. The drive shaft of the first motor 5 is fixedly connected to a mounting base 8. The electric lifting assembly includes an electric push rod 3, which is fixedly installed on the analyzer body 1. A slide block 18 is fixedly connected to the movable end of the electric push rod 3. The first motor 5 is fixedly installed on the top of the slide block 18. The mounting shaft of the mounting base 8 is rotatably connected to the slide block 18. The mounting shaft of the mounting base 8 and the slide block 18 are connected by a bearing. The inner ring of the bearing is fixedly connected to the mounting shaft, and the outer ring of the bearing is fixedly connected to the slide block 18. Two slide rails 4 are symmetrically slidably connected on one side of the outer surface of the slide block 18, and the slide rails 4 are fixedly connected to the analyzer body 1.

[0026] A second motor 19 is fixedly connected to the bottom of the mounting base 8. A splined shaft 20 is fixedly connected to the drive end of the second motor 19, and the splined shaft 20 extends through the bottom of the mounting base 8 into the interior. The splined shaft 20 is rotatably connected to the mounting base 8. The splined shaft 20 and the mounting base 8 are connected by a bearing. The inner ring of the bearing is fixedly connected to the splined shaft 20, and the outer ring of the bearing is fixedly connected to the mounting base 8. A splined sleeve 15 is slidably fitted onto the outer surface of the splined shaft 20, and a sloping bottom mounting seat 7 is fixedly connected to the top of the splined sleeve 15. A tension spring assembly is installed between the sloping bottom mounting base 7 and the spline shaft 20. The tension spring assembly includes a tension spring 14, which is fixedly installed at the bottom of the sloping bottom mounting base 7. An annular plate 21 is fixedly connected to the bottom of the tension spring 14, and the annular plate 21 is fixedly sleeved on the outer surface of the spline shaft 20. The arrangement of the annular plate 21 facilitates the use of the tension spring 14. Two support rods 16 abut against the bottom of the sloping bottom mounting base 7. The two support rods 16 are arranged at different heights, and the support rods 16 provide support for the sloping bottom mounting base 7.

[0027] A conical flask clamping assembly is installed at the top of the sloping bottom placement base 7. The conical flask clamping assembly includes a first knob 12. The outer surface of the first knob 12 is provided with anti-slip texture to increase its surface friction and prevent slippage during use. The first knob 12 is located on one side of the outer surface of the sloping bottom placement base 7. One end of the first knob 12 is fixedly connected to a first bidirectional screw 13. The first bidirectional screw 13 extends through the outer surface of the sloping bottom placement base 7 and into the interior. The first bidirectional screw 13 is rotatably connected to the sloping bottom placement base 7. Two clamping blocks 17 are symmetrically threaded on the outer surface of the first bidirectional screw 13. The clamping blocks 17 are slidably connected to the sloping bottom placement base 7. Rubber pads are fixed on the clamping surfaces of the two clamping blocks 17 to prevent the clamping blocks 17 from directly contacting the conical flask and to protect the conical flask.

[0028] A connecting block 9 is fixedly connected to one side of the outer surface of the nitrogen analyzer body 1. A bidirectional screw seat is fixedly installed on one side of the outer surface of the connecting block 9. Two burette clamps 2 are symmetrically threaded on the outer surface of the bidirectional screw seat. Rubber pads are fixedly connected to the clamping surfaces of the two burette clamps 2. The rubber pads can prevent the burette clamps 2 from making hard contact with the outer surface of the burette, thus protecting the burette. The bidirectional screw seat includes a frame 6, which is fixedly connected to the connecting block 9. The two burette clamps 2 are slidably connected to the frame 6. A second knob 10 is provided on one side of the outer surface of the frame 6. The outer surface of the second knob 10 is provided with anti-slip texture to increase its surface friction and prevent slippage during use. A second bidirectional screw 11 is fixedly connected to one end of the second knob 10. The second bidirectional screw 11 extends through the outer wall of the frame 6 and into the interior. The second bidirectional screw 11 is limited to the frame 6 and rotated. The two burette clamps 2 are symmetrically threaded onto the outer surface of the second bidirectional screw 11.

[0029] Working principle: When using the nitrogen analyzer body 1, the conical flask containing the absorption liquid needs to be placed on the inclined bottom placement seat 7. Then, turn the first knob 12. The first knob 12 drives the first bidirectional screw 13 to rotate, driving the two clamping blocks 17 to move closer together, thereby clamping and fixing the conical flask. Then, the electric push rod 3 runs, driving the slide 18 along the slide rail 4. The slide 18, through the mounting seat 8 and other components, drives the inclined bottom placement seat 7 and the conical flask to rise until the desired position is reached. Then, the digestion tube is installed, and the nitrogen analyzer body 1 runs. The absorption liquid absorbs ammonia gas. During this process, the burette can be installed. Place the burette between the two burette clamping plates 2, and then turn the second knob 10. The second knob 10 drives the second bidirectional screw 11. The second bidirectional screw 11 drives the two burette clamps 2 to approach each other, thus clamping and fixing the burette. After the ammonia is absorbed, the electric lifting assembly drives the conical flask to descend through various components. Then, the first motor 5 runs and drives the mounting base 8 to rotate 180 degrees. The mounting base 8 moves the conical flask to below the burette through various components. Then, the height of the conical flask is adjusted by the electric lifting assembly. Next, the experimenter performs the titration operation. During the titration process, the second motor 19 runs and drives the spline shaft 20 to rotate. The spline shaft 20 drives the inclined bottom placement seat 7 to rotate through the spline sleeve 15. While rotating, the inclined bottom placement seat 7 shakes under the action of the tension spring 14 and the support rod 16, which can drive the conical flask to shake and assist the titration operation.

[0030] It should be noted that, in actual use, the nitrogen analyzer body 1 has a built-in controller that is electrically connected to the electric push rod 3, the first motor 5, and the second motor 19 to facilitate overall control. The specific data analysis and processing involved to further realize the control function are methods that can be implemented by those skilled in the art based on common knowledge. These methods are not within the scope of this solution. The above description is only to illustrate the beneficial effects that can be achieved by this hardware structure improvement in conjunction with common knowledge.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A nitrogen analyzer, comprising a nitrogen analyzer body (1), characterized in that: An electric lifting assembly is fixedly installed on one side of the outer surface of the nitrogen analyzer body (1). A first motor (5) is fixedly installed on the movable end of the electric lifting assembly. The drive shaft of the first motor (5) is fixedly connected to a mounting base (8). A second motor (19) is fixedly connected to the bottom of the mounting base (8). A spline shaft (20) is fixedly connected to the drive end of the second motor (19). The spline shaft (20) extends through the bottom of the mounting base (8) into the interior. A spline sleeve (15) is slidably sleeved on the outer surface of the spline shaft (20). A sloping bottom placement seat (7) is fixedly connected to the top of the spline sleeve (15). A tension spring assembly is installed between the sloping bottom placement seat (7) and the spline shaft (20). Two support rods (16) abut against the bottom of the sloping bottom placement seat (7). The top of the inclined bottom placement seat (7) is equipped with a conical bottle clamping assembly; A connecting block (9) is fixedly connected to one side of the outer surface of the nitrogen analyzer body (1). A bidirectional screw seat is fixedly installed on one side of the outer surface of the connecting block (9). Two burette clamps (2) are symmetrically threaded on the outer surface of the bidirectional screw seat.

2. The nitrogen analyzer according to claim 1, characterized in that: The electric lifting assembly includes an electric push rod (3), which is fixedly installed on the nitrogen analyzer body (1). The movable end of the electric push rod (3) is fixedly connected to a slide (18), and the first motor (5) is fixedly installed on the top of the slide (18). The mounting shaft of the mounting base (8) is rotatably connected to the slide (18). Two slide rails (4) are symmetrically slidably connected to one side of the outer surface of the slide (18), and the slide rails (4) are fixedly connected to the nitrogen analyzer body (1).

3. A nitrogen analyzer according to claim 1, characterized in that: The spline shaft (20) is rotatably connected to the mounting base (8).

4. A nitrogen analyzer according to claim 1, characterized in that: The tension spring assembly includes a tension spring (14), which is fixedly installed at the bottom of the inclined base (7). The bottom of the tension spring (14) is fixedly connected to an annular plate (21), which is fixedly sleeved on the outer surface of the spline shaft (20).

5. A nitrogen analyzer according to claim 1, characterized in that: The two support rods (16) are arranged with one high and one low.

6. A nitrogen analyzer according to claim 1, characterized in that: The conical bottle clamping assembly includes a first knob (12), which is located on one side of the outer surface of the inclined bottom placement seat (7). One end of the first knob (12) is fixedly connected to a first bidirectional screw (13), which extends through the outer surface of the inclined bottom placement seat (7) to the interior. The first bidirectional screw (13) and the inclined bottom placement seat (7) are connected in a limited rotational connection. Two clamping blocks (17) are symmetrically threaded on the outer surface of the first bidirectional screw (13), and the clamping blocks (17) are slidably connected to the inclined bottom placement seat (7).

7. A nitrogen analyzer according to claim 1, characterized in that: The bidirectional screw seat includes a frame (6), and the frame (6) is fixedly connected to the connecting block (9). Both burette clamps (2) are slidably connected to the frame (6). A second knob (10) is provided on one side of the outer surface of the frame (6). A second bidirectional screw (11) is fixedly connected to one end of the second knob (10). The second bidirectional screw (11) extends through the outer wall of the frame (6) and into the interior. The second bidirectional screw (11) is limited to the frame (6) and rotated. The two burette clamps (2) are symmetrically threaded onto the outer surface of the second bidirectional screw (11).

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