Nitrogen determination device for food quality detection

Abstract

The utility model discloses a nitrogen determination device for food quality detection. The nitrogen determination device comprises a main body, an adjusting screw rod and a fixing mechanism, two sliding grooves are formed in the front end of the main body, and adjusting screw rods are in threaded connection with the interiors of the sliding grooves; the two fixing mechanisms are arranged on the adjusting screw rod in an array mode. The fixing mechanism comprises a mounting plate, an adjusting ring, a screw rod and a driving gear; top blocks are symmetrically arranged at the rear end of the mounting plate and are in threaded connection with adjusting screw rods; mounting groove mounting screws and driving gears are arranged at the upper end of the mounting ring in an array manner; the lower part of the mounting ring is rotationally connected with an adjusting ring; a circular ring is formed at the front ends of the screw rods in the mounting grooves arranged in the array; the screw rod is in sliding connection with the mounting groove, and the screw rod is in threaded connection with the driving gear; a replaceable sponge layer is arranged at the front end of the screw rod; the driving gear is in gear connection with the adjusting gear; the driving gear is controlled to rotate by rotating the adjusting ring, the screw rod is controlled to move back and forth, and the diameter of a circular ring formed at the front end of the screw rod in the mounting groove is adjusted.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of food safety detection, specifically relates to a nitrogen determination device for food quality detection. BACKGROUND

[0002] The nitrogen determination instrument is an important analysis instrument for determining protein content in the field of food quality detection, which is based on the Kjeldahl nitrogen determination method principle, and the protein content is obtained by detecting the nitrogen element content in the sample. In the prior art, the digestion tube is a core component of the nitrogen determination instrument, which needs to contain samples and reagents during high-temperature digestion, and its fixing stability directly affects the accuracy of the detection result. However, the fixing method of the digestion tube in the traditional nitrogen determination instrument usually adopts a rigid clamping structure at both ends, and in the actual use process, the liquid in the digestion tube is easy to cause the pipe body to vibrate due to violent boiling, which causes the digestion tube and the instrument interface to deviate, and further causes sealing failure, gas leakage and other problems. Such gas leakage not only interferes with the quantitative detection of nitrogen elements, but also may cause reagent volatilization pollution, reducing the experimental safety and reliability.

[0003] In view of the above problems, an improvement scheme is proposed in the prior art. For example, patent application CN202320179546.2 discloses a fixing device for digestion tube of nitrogen determination instrument, which adjusts the position of the supporting plate by hydraulic drive sliding block to adapt to different specifications of digestion tube, and fixes the lower end of the digestion tube by using the fixing structure. Although this scheme improves the adaptability and operation convenience to some extent, it still has the following limitations: first, the adjusting device relies on the hydraulic system, which has complex structure and high maintenance cost, and the positioning accuracy may decrease due to the wear of hydraulic components during long-term use, and the pressure distribution is uneven, which may cause the fixed sliding phenomenon; second, although the cooperation design of the supporting plate and the fixing structure can fix the lower end of the digestion tube, the absorption capacity of the vibration energy of the pipe body is insufficient, and the upper end of the digestion tube may still produce micro-displacement due to high-frequency vibration, which causes the interface sealing performance to deteriorate; in addition, frequent disassembly of the supporting plate may cause mechanical fatigue of the connecting structure, affecting the long-term stability of the fixing device. Therefore, it is urgent to develop a nitrogen determination device with simplified structure, excellent anti-vibration performance and high sealing reliability to meet the needs of high precision, high efficiency and low maintenance cost in the field of food detection.

[0004] Therefore, the utility model discloses a nitrogen determination device for food quality detection. UTILITY MODEL CONTENTS

[0005] In order to achieve the above technical effects, the utility model is realized by the following technical scheme: a nitrogen determination device for food quality detection, comprising: a main body, an adjusting screw rod and a fixing mechanism.

[0006] Two sliding grooves are arranged at the front end of the main body, and the adjusting screw rod is connected in the sliding groove through screw thread; two fixing mechanisms are arranged on the adjusting screw rod in array;

[0007] The fixing mechanism comprises a mounting plate, an adjusting ring, a screw rod and a driving gear;

[0008] The rear end of the mounting plate is symmetrically provided with a top block threadedly connected with an adjusting screw rod, the middle part of the mounting plate is provided with a through hole, and the outer periphery of the through hole is integrally formed with a mounting ring; the upper end of the mounting ring is arrayed with mounting grooves for mounting the screw rod and the driving gear, and the lower part of the mounting ring is rotatably connected with the adjusting ring; the front end of the screw rod in the mounting groove is arrayed and is formed into a circular ring; the screw rod is slidably connected with the mounting groove, and the screw rod is threadedly connected with the driving gear; the front end of the screw rod is provided with a replaceable sponge layer; the driving gear is gear-connected with the adjusting gear; the driving gear is controlled to rotate by rotating the adjusting ring, the screw rod is controlled to move forward and backward, and the diameter of the circular ring formed at the front end of the screw rod in the mounting groove is adjusted;

[0009] Further, the main body is a nitrogen determination instrument main body, which is a special instrument for detecting the nitrogen content in seeds, dairy products, beverages, feed, soil and other agricultural and sideline products;

[0010] Further, the front end of the screw rod is provided with a sponge body, and a limiting groove is formed in the rod body of the screw rod and movably connected with the mounting ring;

[0011] Further, the number of the mounting grooves arrayed on the mounting ring is greater than 5;

[0012] Further, a clamping head is integrally arranged on the inner wall of the mounting groove; the clamping head is slidably arranged in the limiting groove, so as to ensure the linear sliding of the screw rod in the mounting groove;

[0013] Further, two fixing mechanisms are arrayed on the screw rod; the distance between the two fixing mechanisms is in the range of 3-8 cm, and the synchronous lifting of the two fixing mechanisms is controlled by the screw rod;

[0014] The beneficial effects of the utility model are as follows:

[0015] The fixing stability and adaptability are enhanced: the fixing mechanism is arranged, the driving ring is controlled to move by rotating the adjusting ring, the screw rod moves in the mounting groove, the diameter of the circular ring formed at the front end of the screw rod in the mounting groove is adjusted, the fixing mechanism can effectively fix the cooking pipes of different specifications, the design simplifies the complex structure of the traditional hydraulic system, reduces the maintenance cost, and significantly improves the adaptability and stability of the cooking pipes of different sizes.

[0016] Excellent anti-vibration performance: the replaceable sponge layer is arranged at the front end of the two fixed mechanisms arranged in an upper and lower array, the replaceable sponge layer provides good buffering effect, effectively absorbs the vibration energy generated by liquid boiling in the high-temperature digestion process of the digestion tube, reduces the micro-displacement of the upper end of the tube body, and the two fixed mechanisms arranged in an upper and lower array further limit the micro-displacement of the tube body caused by the vibration energy generated by liquid boiling; improve the accuracy of the experiment.

[0017] Simplify operation and maintenance: compared with the traditional fixed device relying on hydraulic system, the structure of the utility model is more simplified, and the operation is more convenient. The design of the adjusting screw and the fixed mechanism enables the user to complete the fixation and adjustment of the digestion tube without complex operation steps, and the replaceable sponge layer design also facilitates the user to replace according to the actual demand, reduces the maintenance difficulty and cost of long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be a brief introduction to the drawings needed for the embodiment description.

[0019] Figure 1 It is a kind of whole structure schematic diagram for the nitrogen fixation device for food quality detection;

[0020] Figure 2 It is the enlarged structure schematic diagram in figure 1 for the nitrogen fixation device for food quality detection;

[0021] Figure 3 It is the connection structure schematic diagram of fixed mechanism and adjusting screw for the nitrogen fixation device for food quality detection;

[0022] Figure 4 It is the sectional structure schematic diagram of fixed mechanism for the nitrogen fixation device for food quality detection;

[0023] Figure 5 It is the enlarged structure schematic diagram in figure 4 for the nitrogen fixation device for food quality detection.

[0024] In the drawings, the component list represented by each sign is as follows:

[0025] 1-main body, 101-slotted, 2-mounting plate, 201-mounting ring, 2011-mounting groove, 2012-clamping head, 3-adjusting ring, 4-screw, 401-replaceable sponge layer, 402-limiting groove, 5-driving gear, 6-adjusting screw. DETAILED DESCRIPTION

[0026] The nitrogen fixation device for food quality detection of the utility model comprises: main body 1, adjusting screw 64, fixed mechanism;

[0027] The front end of the main body 1 is provided with two sliding grooves 101, and the sliding grooves 101 are threadedly connected to the adjusting screws 64; two fixing mechanisms are arranged in an array on the adjusting screws 64.

[0028] The fixing mechanism includes a mounting plate 2, an adjusting ring 3, a screw 4, and a drive gear 5;

[0029] The mounting plate 2 has a top block threaded connection to the adjusting screw 64 symmetrically arranged at its rear end. A through hole is opened in the middle of the mounting plate 2, and a mounting ring 201 is integrally formed around the outer circumference of the through hole. The upper end of the mounting ring 201 has an array of mounting grooves 2011 for mounting screws 4 and a drive gear 5. The lower part of the mounting ring 201 is rotatably connected to the adjusting ring 3. The front end of the screw 4 inside the arrayed mounting grooves 2011 is formed into a circular ring. The screw 4 is slidably connected to the mounting groove 2011 and threadedly connected to the drive gear 5. A replaceable sponge layer 401 is provided at the front end of the screw 4. The drive gear 5 is gear-connected to the adjusting gear. Rotating the adjusting ring 3 controls the rotation of the drive gear 5, which in turn controls the forward and backward movement of the screw 4, adjusting the diameter of the circular ring formed at the front end of the screw 4 inside the mounting groove 2011.

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model; obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Example 1

[0031] like Figures 1 to 5 As shown, this embodiment provides a nitrogen determination device for food quality testing, including a main body 11, an adjusting screw 646, and a fixing mechanism.

[0032] The main body 11 is the nitrogen analyzer body 1, specifically used for detecting nitrogen content in seeds, dairy products, beverages, feed, soil, and other agricultural by-products. The front end of the main body 11 has two sliding grooves 101101, with an adjusting screw 64 threaded inside each groove. Two fixing mechanisms are arrayed on the adjusting screw 64 for clamping and fixing the digestion tube.

[0033] Each fixing mechanism includes a mounting plate 22, an adjusting ring 33, a screw 44, and a drive gear 55. The rear end of the mounting plate 22 is symmetrically provided with top blocks, which are threaded onto the adjusting screw 64, allowing the mounting plate 22 to move up and down as the adjusting screw 64 rotates, thereby adjusting the height of the fixing mechanism. A through hole is formed in the middle of the mounting plate 22, and a mounting ring 201201 is integrally formed around the outer circumference of the through hole.

[0034] The upper end array of the mounting ring 201201 is provided with a mounting groove 20112011 for mounting the screw rod 44 and the drive gear 55. The lower part of the mounting ring 201201 is rotationally connected with the adjusting ring 33. Inside the mounting ring 201201, the front end of the screw rod 44 is shaped as a circular ring for clamping the digestion tube. The screw rod 44 is in sliding connection with the mounting groove 20112011, and at the same time, the screw rod 44 is also in threaded connection with the drive gear 55. When the drive gear 55 rotates, it drives the screw rod 44 to move forward and backward in the mounting groove 20112011, thereby adjusting the diameter of the circular ring to adapt to digestion tubes of different specifications.

[0035] In order to further enhance the stability and adaptability of the fixation, the front end of the screw rod 44 is provided with a replaceable sponge layer 401401. The replaceable sponge layer 401401 provides good cushioning effect and can effectively absorb the vibration energy generated by the boiling of the liquid during the high-temperature digestion process of the digestion tube. In addition, the design of the replaceable sponge layer 401401 also facilitates the user to replace it according to actual needs, reducing the maintenance difficulty and cost of long-term use.

[0036] The adjusting ring 33 is used to control the rotation of the drive gear 55. By rotating the adjusting ring 33, the drive gear 55 can be driven to rotate, thereby controlling the movement of the screw rod 44 in the mounting groove 20112011. This design simplifies the complex structure of the traditional hydraulic system, reduces the maintenance cost, and improves the adaptability and stability of the fixation of digestion tubes of different sizes.

[0037] In this embodiment, the number of mounting grooves 20112011 arranged on the upper end array of the mounting ring 201201 is greater than 5, to ensure sufficient clamping force and stability. At the same time, the inner wall of the mounting groove 20112011 is integrally provided with a clamping head 20122012, which is slidingly installed in the limiting groove 402402 on the screw rod 44. This design can ensure the linear sliding of the screw rod 44 in the mounting groove 20112011, avoiding the deviation or jamming of the screw rod 44 during rotation.

[0038] In addition, the spacing between the two fixing mechanisms is in the range of 3-8 cm, which can be adjusted according to the specifications of the digestion tube actually used. By adjusting the screw rod 64 to control the synchronous lifting of the two fixing mechanisms, different lengths of digestion tubes can be easily adapted. Embodiment 2

[0039] The embodiment is basically the same as embodiment 1, except that the number of installation grooves 20112011 arranged on the installation ring 201201 can be adjusted according to actual needs. For example, in some cases, more installation grooves 20112011 may be needed to provide more uniform clamping force or to adapt to more complex cooking tube shapes. Therefore, in embodiment 2, the number of installation grooves 20112011 can be increased to 10 or more.

[0040] At the same time, in embodiment 2, the material and shape of the replaceable sponge layer 401401 can also be further optimized. For example, a sponge material with higher elastic modulus and better wear resistance can be selected to make the replaceable sponge layer 401401 to improve its buffering effect and durability. In addition, the replaceable sponge layer 401401 can also be custom designed according to the outer diameter and shape of the cooking tube to ensure the best clamping effect and sealing performance. Embodiment 3

[0041] The embodiment is basically the same as embodiments 1 and 2, except that the lubrication and maintenance design of the adjusting screw 646 and the fixing mechanism are increased. In order to reduce the wear and friction resistance during long-term use, an appropriate amount of lubricant can be applied to the contact surface of the adjusting screw 646 and the fixing mechanism. In addition, the fixing mechanism can also be regularly inspected and maintained, and the severely worn parts or loose connectors can be replaced or adjusted in time to ensure the long-term stability and reliability of the nitrogen fixation device.

[0042] In summary, the present application provides a nitrogen fixation device with simplified structure, excellent anti-vibration performance and high sealing reliability. Through the innovative design of the fixing mechanism and the replaceable sponge layer 401, the present application not only improves the adaptability and stability of different specifications of cooking tubes, but also significantly reduces the maintenance cost and use difficulty. At the same time, the excellent anti-vibration performance and simplified operation and maintenance design also make the present application have a wide application prospect in the field of food quality detection.

[0043] The preferred embodiments of the present application disclosed above are only used to help explain the present application, and the preferred embodiments do not describe all the details and do not limit the present application to the specific embodiments described.

Claims

1. A nitrogen determination device for food quality detection, characterized by, Include: Main body, adjusting screw, fixed mechanism; Two chute are arranged in the front end of the main body, and the adjusting screw is connected with the chute through screw thread; two fixed mechanisms are arranged on the adjusting screw in array; The fixed mechanism comprises a mounting plate, an adjusting ring, a screw rod and a driving gear; The top block is symmetrically arranged at the rear end of the mounting plate and connected with the adjusting screw through screw thread; a through hole is formed in the middle of the mounting plate, and a mounting ring is integrally formed on the outer periphery of the through hole; the mounting ring is arranged with mounting slots for mounting the screw rod and the driving gear in array at the upper end of the mounting ring, and the adjusting ring is rotatably connected to the lower part of the mounting ring; the screw rod is formed as a circular ring at the front end of the mounting slot arranged in array; the screw rod is slidably connected with the mounting slot, and the screw rod is connected with the driving gear through screw thread; the front end of the screw rod is provided with a replaceable sponge layer; the driving gear is connected with the adjusting gear through gear.

2. The nitrogen determination device for food quality detection according to claim 1, characterized in that, The main body is a nitrogen determination instrument, which is a special instrument for detecting the nitrogen content in seeds, dairy products, beverages, feed and soil.

3. The nitrogen determination device for food quality detection according to claim 1, characterized in that, The front end of the screw rod is provided with a sponge body, and a limiting groove is formed in the rod body of the screw rod to movably connect the mounting ring.

4. The nitrogen determination device for food quality detection according to claim 1, characterized in that, The number of mounting slots arranged in array on the mounting ring is greater than 5.

5. The nitrogen determination apparatus for food quality detection according to claim 1, wherein The mounting slots are integrally provided with clamping heads on the inner wall; the clamping heads are slidably installed in the limiting groove, so as to ensure the linear sliding of the screw rod in the mounting slot.

6. The nitrogen determination apparatus for food quality detection according to claim 1, wherein The screw rod is arranged with two fixed mechanisms in array; the distance between the two fixed mechanisms is in the range of 3-8 cm, and the synchronous lifting of the two fixed mechanisms is controlled by the screw rod.

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