Feed enzyme preparation activity detection instrument

Abstract

The present invention provides a feed enzyme preparation activity detection instrument, and particularly relates to the technical field of detection equipment, the feed enzyme preparation activity detection instrument comprises a detection box and a detection assembly arranged in the detection box, one side of the top surface of the detection box is provided with a display and a controller, and the center of the top surface of the detection box is provided with a placement port. The detection assembly comprises a transmitting device and a receiving device which are arranged on the two sides of the interior of the detection box respectively, and two sealing plates are arranged between the transmitting device and the receiving device, so that the cuvette can be sealed after the cuvette is placed by a detector and the sealing cover is closed; and then the transmitting device and the receiving device are driven to approach to each other for detection, so that unnecessary pollution on the surfaces of the transmitting device and the receiving device due to accidental contact between the detecting personnel and the transmitting device and the receiving device in the process of manually placing the cuvette is avoided, and the detection effect of the transmitting device and the receiving device during detection operation is ensured.

Description

Technical Field

[0001] The invention provides a feed enzyme preparation activity detection instrument, and particularly relates to the technical field of detection equipment. Background Art

[0002] With the rapid development of modern animal husbandry, feed enzyme preparations have become an important means to improve feed conversion rate, promote animal growth and improve environmental hygiene, and the activity data detection of feed enzyme preparations is particularly important. In the prior art, a "spectrophotometer" is used to measure the absorbance of the sample, thereby calculating the activity of the feed enzyme. The spectrophotometer is mainly composed of a light emitting device and a light receiving device. In the specific operation, the test personnel generally manually inject the test agent into the cuvette, and then put the cuvette into the detection instrument, and use the light of the emitting device to irradiate the light-transmitting surfaces on both sides of the cuvette, so as to cause the light to pass through the light-transmitting surface of the cuvette and the test agent, and finally the light is received by the light receiving device, and then through data analysis and calculation, the test results are finally displayed on the display.

[0003] In the invention patent with authorization announcement number CN115508295B, a rapid detection instrument for the activity of feed enzyme preparations has the following deficiencies when in use: the transmitting device and the receiving device in the detection instrument, when not testing, the transmitting surface of the transmitting device and the receiving surface of the receiving device can directly contact the external environment. When the operator manually takes or places the cuvette (equivalent to the test tube in the comparative document), it is very easy to accidentally touch the transmitting surface and the receiving surface, causing unnecessary pollution, thereby affecting the accuracy of the detection effect. In addition, the instrument adopts a rotation method to promote the uniform distribution of the components in the reagent. However, during the rotation process, not only will the reagent in the cuvette be attached to the wall and the components be unevenly distributed due to the factor of the rotation force, affecting the final detection data, but also after the cuvette is rotated, it is impossible to ensure that the light-transmitting surface of the cuvette is always located between the transmitting device and the receiving device, which will also affect the detection effect.

[0004] Therefore, the present invention proposes a feed enzyme preparation activity detection instrument to make up for and improve the deficiencies of the prior art. Summary of the invention

[0005] In view of the defects existing in the prior art, the present invention provides a feed enzyme preparation activity detection instrument, which can effectively solve the relevant technical problems raised by the background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The invention discloses a feed enzyme preparation activity detection instrument, comprising a detection box and a detection component arranged inside the detection box, wherein a display and a controller are respectively arranged on one side of the top surface of the detection box, a placement opening is arranged at the center of the top surface of the detection box, and a sealing cover is rotatably connected to the placement opening, the detection component comprises a transmitter and a receiver respectively arranged on both sides of the inside of the detection box, the transmitter and the receiver are symmetrically arranged on both sides of the inside of the detection box, a bracket frame is arranged inside the detection box and between the transmitter and the receiver, and no less than four cuvettes are equidistantly arranged on the bracket frame.

[0008] An active detection mechanism is arranged inside the detection box and on both sides of the transmitting device and the receiving device, and the active detection mechanism includes two partition plates symmetrically fixedly connected to the inside of the detection box, and each of the two partition plates is provided with a through hole, and two electric slide rails are symmetrically fixedly installed inside the detection box and on the side away from each other of the two partition plates, and there are four electric slide rails in total, and an electric slider is slidably arranged on each of the electric slide rails, and four pulleys 1 are rotatably connected to the two side walls inside the detection box, and the four pulleys 1 are symmetrically arranged in pairs above the two electric slide rails on the same side, and two pulleys 2 are rotatably connected to the side close to each other of the two partition plates, and there are four pulleys 2 in total, located A pull rope is wound around pulley one and pulley two on the same side, and one end of the pull rope close to pulley one is fixedly connected to the top surface of the corresponding electric slider, and the two partition plates are respectively provided with limit grooves on the sides close to each other, and there are four limit grooves in total, and limit blocks are respectively slidably arranged inside the four limit grooves, and there are four limit blocks in total, and a sealing plate is fixedly connected between the two limit blocks located on the same side, and there are two sealing plates in total, and the initial positions of the two sealing plates are mutually fitted with the through-holes on the corresponding partition plates, and the side surfaces of the two sealing plates close to each other are mutually fitted with the two side surfaces of the bracket frame, and the end of the pull rope close to pulley two is fixedly connected to the top surface of the corresponding limit block.

[0009] Preferably, the initial positions of the four electric sliders are all located on a side away from the partition plate.

[0010] Preferably, the four pulleys 1 and the four pulleys 2 are located at the same horizontal height, and the two partition plates are provided with round holes for the pull rope to pass horizontally.

[0011] Preferably, outer surfaces of the four pulleys 1 and the four pulleys 2 are all smooth surfaces.

[0012] Preferably, the sliding portion between the limiting block and the limiting groove is T-shaped, and the shape of the limiting groove matches the shape of the T-shaped portion of the limiting block.

[0013] Preferably, a concave opening is provided at the top of the bracket frame and at a position corresponding to the cuvette, a follower plate is fixedly connected to the side of the two sealing plates close to each other and at a position corresponding to the cuvette, and a wiping cotton is bonded to the side of the follower plate close to the cuvette.

[0014] Preferably, the width of the follower plate and the wiping cotton is the same as the width of the interior of the cuvette, and the follower plate and the wiping cotton are located in the corresponding concave openings after they move up to the final positions.

[0015] Preferably, the bracket frame and the sealing plate are jointly provided with a follower knocking mechanism, and the follower knocking mechanism includes a plurality of follower rods fixedly connected to a sealing plate close to a side of the bracket frame, the position of each follower rod corresponds one-to-one to the position of each cuvette, four positioning shafts are symmetrically fixedly connected inside the bracket frame and on both sides of each cuvette, a side plate is commonly slidably connected between the four positioning shafts, springs are sleeved on the outside of the four positioning shafts, a plurality of triangular blocks are evenly fixedly provided on the side of the side plate away from the cuvette, each of the triangular blocks is provided with two inclined surfaces on the side away from the side plate, and the inclined surface of each triangular block is located on the path of vertical movement of the corresponding follower rod, and a plurality of abutment rods are evenly provided on the surface of the side plate close to the cuvette.

[0016] Preferably, the outer surface of the follower rod and the inclined surface of the triangular block are both smooth surfaces.

[0017] Preferably, each of the push rods is made of elastic rubber material, and the plurality of push rods are distributed in a rectangular shape.

[0018] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0019] The feed enzyme preparation activity detection instrument, by arranging two sealing plates between the transmitting device and the receiving device, after the detection personnel have placed the cuvette and closed the sealing cover, the transmitting device and the receiving device are urged to move closer to each other for detection, thereby avoiding the detection personnel from accidentally contacting the transmitting device and the receiving device during the process of manually placing the cuvette, causing unnecessary contamination on the surfaces of the two devices, thereby ensuring the detection effect of the two devices during the detection operation;

[0020] When not testing, the transmitter and receiver are blocked by the corresponding sealing plates, so that they are in independent sealed spaces respectively, which can also effectively prevent external dust and impurities from adhering to their surfaces, thus ensuring the effectiveness of the testing.

[0021] Use the wiping cotton to wipe the light-transmitting surfaces on both sides of the cuvette to effectively remove the water droplets or fingerprints attached to the light-transmitting surfaces of the cuvette to prevent the water droplets and fingerprints from affecting the light emitted by the emitting device, thereby ensuring the accuracy of the test data;

[0022] After each cuvette is placed, each push rod reciprocates to knock the two sides of the cuvette to generate vibration force on both sides of the cuvette, and utilizes the vibration force to promote uniform mixing of the feed enzyme reagent components inside the cuvette, thereby avoiding the final test data being affected by the uneven distribution of the internal components of the reagent during detection. Compared with the manual shaking method or the rotation shaking method in the prior art, the vibration method is more convenient, there will be no problem of reagent sticking to the wall, and it is more conducive to the uniform distribution of the components in the reagent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a main perspective structural diagram of the present invention;

[0024] Figure 2 It is a partial three-dimensional structural diagram of the relevant components of the detection box and the partition plate in the cut state in the present invention;

[0025] Figure 3 It is a three-dimensional structural diagram of the relevant components of the detection box in the present invention in a cut-away state from another perspective;

[0026] Figure 4 It is a partial three-dimensional structural diagram of the electric slide rail and the related components of the pull rope in the present invention;

[0027] Figure 5 It is a partial three-dimensional structural diagram of the relevant components at the limiting groove in the present invention;

[0028] Figure 6 It is a partial three-dimensional structural diagram of the concave opening and the related parts of the follower plate in the present invention;

[0029] Figure 7 It is a three-dimensional structural diagram of the follower plate and the wiping cotton in the present invention;

[0030] Figure 8 It is a partial three-dimensional structural diagram of the follower rod and the related parts at the side plate in the present invention;

[0031] Fig. 9 It is a partial three-dimensional structural diagram of the cuvette and the related parts at the side plate in the present invention;

[0032] Fig.10 It is a front view structural diagram of the cuvette and the related parts at the side plate in the present invention.

[0033] The numbers in the figure represent:

[0034] 1. Detection box; 11. Display; 12. Controller; 13. Placement port; 14. Sealing cover; 15. Transmitter; 16. Receiver; 17. Bracket; 171. Concave port; 18. Cuvette;

[0035] Active detection mechanism: 21, partition plate; 22, through-hole; 23, electric slide rail; 24, electric slide block; 25, pulley 1; 26, pulley 2; 27, pull rope; 28, sealing plate; 281, follower plate; 282, wiping cotton; 29, limit block; 210, limit groove;

[0036] Follow-up striking mechanism: 31, follow-up rod; 32, positioning shaft; 321, spring; 33, side plate; 34, triangular block; 35, resisting rod. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the embodiments.

[0038] Embodiment 1:

[0039] like Figures 1 to 7 As shown, a feed enzyme preparation activity detection instrument includes a detection box 1 and a detection component arranged inside the detection box 1, a display 11 and a controller 12 are respectively arranged on one side of the top surface of the detection box 1, a placement opening 13 is arranged at the center of the top surface of the detection box 1, and a sealing cover 14 is rotatably connected to the placement opening 13, the detection component includes a transmitter 15 and a receiver 16 respectively arranged on both sides of the inside of the detection box 1, the transmitter 15 and the receiver 16 are symmetrically arranged on both sides of the inside of the detection box 1, and the transmitter 15 and the receiver 16 are components of an existing spectrophotometer. A bracket rack 17 is provided inside the detection box 1 and between the transmitting device 15 and the receiving device 16. No less than four cuvettes 18 are placed equidistantly on the bracket rack 17. Specifically, a rectangular opening is provided on the top of the bracket rack 17 for the cuvettes 18 to pass downward. The corresponding cuvettes 18 are limited by the rectangular opening to ensure the stability of the placement of the cuvettes 18; and the two side surfaces of the cuvette 18 close to the transmitting device 15 and the receiving device 16 are both light-transmitting surfaces, while the other two sides are frosted surfaces.

[0040] An active detection mechanism is provided inside the detection box 1 and on both sides of the transmitting device 15 and the receiving device 16. The active detection mechanism includes two partition plates 21 symmetrically fixedly connected to the inside of the detection box 1. The two partition plates 21 are respectively provided with through openings 22. Two electric slide rails 23 are symmetrically fixedly installed inside the detection box 1 and on the side away from the two partition plates 21. There are four electric slide rails 23 in total. Each electric slide rail 23 is slidably provided with an electric slider 24. The electric slide rail 23 is controlled by the controller 12. The initial positions of the four electric sliders 24 are all located on the side away from the partition plate 21. Four pulleys 25 are rotatably connected to the two side walls inside the detection box 1. The four pulleys 25 are symmetrically arranged in pairs above the two electric slide rails 23 on the same side. Two pulleys 26 are rotatably connected to the sides of the two partition plates 21 close to each other. There are four pulleys 26 in total. A pull rope 27 is wound between the pulleys 25 and 26 on the same side. The four pulleys 25 and 26 are at the same horizontal height, and the two partition plates 21 are provided with round holes for the pull ropes 27 to pass horizontally. The outer surfaces of the four pulleys 25 and 26 are smooth to reduce the friction they exhibit. The pull rope 27 is made of polyester fiber, which has strong wear resistance, long service life, and is not easily corroded. One end of the pull rope 27 near the pulley 1 25 is fixedly connected to the top surface of the corresponding electric slider 24. The two partition plates 21 are respectively provided with a limit groove 210 on the side close to each other. There are four limit grooves 210. The inside of the four limit grooves 210 is respectively provided with a limit block 29 for sliding. The sliding part of the limit block 29 and the limit groove 210 is T-shaped. The shape of the limit groove 210 is adapted to the shape of the T-shaped part of the limit block 29. There are four limit blocks 29. A sealing plate 28 is fixedly connected between the two limit blocks 29 on the same side. There are two sealing plates 28. The initial positions of the two sealing plates 28 are mutually fitted with the through openings 22 on the corresponding partition plates 21. The side surfaces of the two sealing plates 28 near each other are mutually fitted with the two side surfaces of the bracket frame 17. The end of the pull rope 27 near the pulley 26 is fixedly connected to the top surface of the corresponding limit block 29.

[0041] Furthermore, if Figure 6 , Figure 7As shown, a concave opening 171 is provided on the top of the bracket frame 17 and at a position corresponding to the cuvette 18, and a follower plate 281 is fixedly connected to the side of the two sealing plates 28 close to each other and at a position corresponding to the cuvette 18, and a wiping cotton 282 is bonded to the side of the follower plate 281 close to the cuvette 18. The wiping cotton 282 is bonded to the follower plate 281 by Velcro for user replacement, and a surface of the wiping cotton 282 on one side away from the follower plate 281 is attached to the light-transmitting surfaces on both sides of the cuvette 18. The width of the follower plate 281 and the wiping cotton 282 is the same as the width of the inside of the cuvette 18, and after the follower plate 281 and the wiping cotton 282 move up to the final position, they are located in the corresponding concave opening 171, and when the two are in this position, they will not block the portion of the cuvette 18 below the concave opening 171, that is, the cuvette 18 can be located below the concave opening 171, and can normally receive the irradiation of the light emitted by the emitting device 15, and will not affect normal detection.

[0042] When in use: the inspector manually flips the sealing cover 14 upward to open it, and then passes the cuvette 18 containing the feed enzyme reagent downward through the rectangular opening, and places them one by one on the bracket 17. After all the cuvettes 18 are placed, the inspector flips the sealing cover 14 downward to reset it. Subsequently, the controller 12 simultaneously starts each electric slide rail 23. As the electric slide rail 23 is started, the electric slider 24 will be prompted to move horizontally along the track of the electric slide rail 23 toward the direction close to the partition plate 21, thereby driving the transmitting device 15 and the receiving device 16 to move synchronously, that is, the transmitting device 15 and the receiving device 16 are close to each other, that is, close to the light-transmitting surfaces on both sides of each cuvette 18. In the process of horizontal displacement of each electric slider 24 toward the partition plate 21, the sealing plate 28 will be pulled by the pull rope 27 along the track of the limit groove 210 and gradually moved upward, and when the electric slider 24 drives the transmitting device 15 and the receiving device 16 to stop moving, the sealing plate 28 will not block the position of the through-opening 22. At this time, the inspector starts the transmitting device 15 and the receiving device 16 through the controller 12, and uses the transmitting device 15 to emit light to illuminate the light-transmitting surface of the cuvette 18, and then starts to detect the feed enzyme reagent inside the cuvette 18, and the relevant information of the detection will be displayed on the display 11 for the inspector to view and analyze.

[0043] When the inspection is completed, the inspector controls the electric slide rail 23 through the controller 12 to cause the electric slide block 24 to reset in the opposite direction. After the electric slide block 24 is reset, it automatically moves downward to the initial position under the gravity of the sealing plate 28, that is, it automatically blocks on the corresponding sealing plate 28, so that the transmitting device 15 and the receiving device 16 are respectively in independent spaces.

[0044] Therefore, by setting two sealing plates 28 between the transmitting device 15 and the receiving device 16, only after the testing personnel has placed the cuvette 18 and closed the sealing cover 14, the transmitting device 15 and the receiving device 16 are pushed towards each other for testing, thereby avoiding the testing personnel accidentally touching the transmitting device 15 and the receiving device 16 during the process of manually placing the cuvette 18, causing unnecessary contamination on the surfaces of the two, and further affecting the detection effect of the two during the detection operation. Moreover, when no detection is performed, the transmitting device 15 and the receiving device 16 are blocked by the corresponding sealing plates 28, so that the two are respectively in independent sealed spaces, which can also effectively prevent external dust and impurities from adhering to the surfaces of the two.

[0045] In addition, during the upward movement of the sealing plate 28, the follower plate 281 and the wiping cotton 282 will also be driven to move upward synchronously, and each wiping cotton 282 will move upward synchronously along the light-transmitting surfaces on both sides of the corresponding cuvette 18, so that the wiping cotton 282 can be used to wipe the light-transmitting surfaces on both sides of the cuvette 18, and the water droplets or fingerprints attached to the light-transmitting surfaces of the cuvette 18 can be effectively removed, so as to avoid the water droplets and fingerprints affecting the light emitted by the emitting device 15, thereby ensuring the accuracy of the detection data.

[0046] Embodiment 2:

[0047] like Figures 8 to 10 As shown, the feed enzyme preparation activity detection instrument also includes a follower knocking mechanism commonly arranged on the bracket frame 17 and the sealing plate 28, and the follower knocking mechanism includes a plurality of follower rods 31 fixedly connected to a sealing plate 28 near the bracket frame 17. The position of each follower rod 31 corresponds to the position of each cuvette 18 one by one, and the follower rod 31 is made of iron. Four positioning shafts 32 are symmetrically fixedly connected inside the bracket frame 17 and located on both sides of each cuvette 18. A side plate 33 is slidably connected between the four positioning shafts 32. Springs 321 are sleeved on the outside of the four positioning shafts 32. One end of the spring 321 is fixedly connected to the outer wall of the positioning shaft 32, and the other end is fixedly connected to the outer wall of the side plate 33. A plurality of triangular blocks 34 are evenly fixedly arranged on the side of the side plate 33 away from the cuvette 18. Each triangular block 34 is provided with two inclined surfaces on the side away from the side plate 33. The inclined surfaces of each triangular block 34 are located on the path of vertical movement of the corresponding follower rod 31. The outer surface of the follower rod 31 and the inclined surfaces of the triangular blocks 34 are smooth surfaces. A plurality of abutting rods 35 are evenly arranged on the surface of the side plate 33 close to the cuvette 18. Each abutting rod 35 is made of elastic rubber material, and the plurality of abutting rods 35 are distributed in a rectangular shape. Specifically, the distribution surfaces of the abutting rods 35 in a rectangular shape correspond to the frosted surfaces on both sides of the cuvette 18. Initially, the abutting rods 35 do not contact the frosted surface of the cuvette 18, and the spring 321 is not deformed.

[0048] During use in the above-mentioned embodiment 1, after the inspector places the cuvette 18 on the bracket rack 17, as the sealing plate 28 moves upward, the follower rod 31 will also be driven to move synchronously, and the follower rod 31 will squeeze the inclined surface of the triangular block 34, thereby prompting the two side plates 33 on the frosted surfaces on both sides of each cuvette 18, and the multiple push rods 35 on the two side plates 33, all to move horizontally in the direction close to the frosted surfaces on both sides of the cuvette 18. During the process, each spring 321 is compressed until multiple push rods 35 hit the frosted surfaces on both sides of the cuvette 18, and multiple triangular blocks 34 are equidistantly arranged on the side plates 33, so that as the follower rod 31 gradually moves upward, each push rod 35 will be prompted to intermittently and reciprocally hit the outer walls of the cuvette 18 on both sides.

[0049] Therefore, after each cuvette 18 is placed, each push rod 35 reciprocates to knock on both sides of the cuvette 18, generating vibration force on both sides of the cuvette 18, and utilizing the vibration force to promote uniform mixing of the feed enzyme reagent components inside the cuvette 18, thereby avoiding the final test data being affected by the uneven distribution of the internal components of the reagent during detection. Compared with the manual shaking method or the rotation shaking method in the prior art, the vibration method is more convenient and more conducive to the uniform distribution of the components in the reagent.

[0050] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A feed enzyme preparation activity detection instrument, comprising a detection box (1) and a detection component arranged inside the detection box (1), wherein a display (11) and a controller (12) are respectively arranged on one side of the top surface of the detection box (1), a placement opening (13) is arranged at the center of the top surface of the detection box (1), and a sealing cover (14) is rotatably connected to the placement opening (13), the detection component comprises a transmitting device (15) and a receiving device (16) respectively arranged on both sides of the inside of the detection box (1), and the transmitting device (15) and the receiving device (16) are symmetrically arranged on both sides of the inside of the detection box (1), characterized in that: A bracket frame (17) is arranged inside the detection box (1) and between the transmitting device (15) and the receiving device (16), and no less than four cuvettes (18) are placed on the bracket frame (17) at equal intervals; An active detection mechanism is provided inside the detection box (1) and on both sides of the transmitting device (15) and the receiving device (16), and the active detection mechanism comprises two partition plates (21) symmetrically fixedly connected to the inside of the detection box (1), and the two partition plates (21) are respectively provided with a through hole (22), and two electric slide rails (23) are symmetrically fixedly installed inside the detection box (1) and on the side away from each other of the two partition plates (21), and there are four electric slide rails (23) in total, and each electric slide rail (23) is slidably provided with an electric slider (24), and four pulleys (25) are rotatably connected to the two side walls inside the detection box (1), and the four pulleys (25) are symmetrically arranged in pairs above the two electric slide rails (23) located on the same side, and two pulleys (26) are rotatably connected to the side of the two partition plates (21) that are close to each other, and there are four pulleys (26) in total, and the pulleys (25) located on the same side are rotatably connected. ) and the second pulley (26), a pull rope (27) is wound around each other, and one end of the pull rope (27) close to the first pulley (25) is fixedly connected to the top surface of the corresponding electric slider (24), and the two partition plates (21) are respectively provided with a limit groove (210) on the side close to each other, and there are four limit grooves (210) in total, and limit blocks (29) are respectively slidably arranged inside the four limit grooves (210), and there are four limit blocks (29) in total, which are located on the same side. A sealing plate (28) is fixedly connected between the two limit blocks (29), and two sealing plates (28) are provided in total, and the initial positions of the two sealing plates (28) are in contact with the through openings (22) on the corresponding partition plates (21), and the side surfaces of the two sealing plates (28) close to each other are in contact with the two side surfaces of the bracket frame (17), and one end of the pull rope (27) close to the second pulley (26) is fixedly connected to the top surface of the corresponding limit block (29).

2. The feed enzyme preparation activity detection instrument according to claim 1, characterized in that: The initial positions of the four electric sliders (24) are all located on a side away from the partition plate (21).

3. The feed enzyme preparation activity detection instrument according to claim 1, characterized in that: The four pulleys 1 (25) and the four pulleys 2 (26) are located at the same level, and the two partition plates (21) are both provided with round holes for the pull rope (27) to pass horizontally.

4. The feed enzyme preparation activity detection instrument according to claim 1, characterized in that: The outer surfaces of the four pulleys one (25) and the four pulleys two (26) are all smooth surfaces.

5. The feed enzyme preparation activity detection instrument according to claim 1, characterized in that: The sliding portion of the limiting block (29) and the limiting groove (210) is T-shaped, and the shape of the limiting groove (210) is compatible with the shape of the T-shaped portion of the limiting block (29).

6. The feed enzyme preparation activity detection instrument according to claim 1, characterized in that: A concave opening (171) is provided at the top of the bracket frame (17) and at a position corresponding to the cuvette (18); a follower plate (281) is fixedly connected to one side of the two sealing plates (28) close to each other and at a position corresponding to the cuvette (18); and a wiping cotton (282) is bonded to one side of the follower plate (281) close to the cuvette (18).

7. The feed enzyme preparation activity detection instrument according to claim 6, characterized in that: The width of the follower plate (281) and the wiping cotton (282) is the same as the width of the interior of the cuvette (18), and the follower plate (281) and the wiping cotton (282) are located in the corresponding concave opening (171) after they move up to the final position.

8. The feed enzyme preparation activity detection instrument according to claim 1, characterized in that: The bracket frame (17) and the sealing plate (28) are jointly provided with a follower knocking mechanism, the follower knocking mechanism comprising a plurality of follower rods (31) fixedly connected to a sealing plate (28) close to the bracket frame (17), the position of each follower rod (31) corresponding to the position of each cuvette (18), four positioning shafts (32) are symmetrically fixedly connected inside the bracket frame (17) and located on both sides of each cuvette (18), and a sliding connection is commonly provided between the four positioning shafts (32). A side plate (33), the outsides of the four positioning shafts (32) are all sleeved with springs (321), a plurality of triangular blocks (34) are evenly and fixedly arranged on the side of the side plate (33) away from the cuvette (18), each of the triangular blocks (34) is provided with two inclined surfaces on the side away from the side plate (33), and the inclined surface of each triangular block (34) is located on the vertical movement path of the corresponding follower rod (31), and a plurality of abutment rods (35) are evenly arranged on the surface of the side of the side plate (33) close to the cuvette (18).

9. The feed enzyme preparation activity detection instrument according to claim 8, characterized in that: The outer surface of the follower rod (31) and the inclined surface of the triangular block (34) are both smooth surfaces.

10. The feed enzyme preparation activity detection instrument according to claim 8, characterized in that: Each of the support rods (35) is made of elastic rubber material, and a plurality of the support rods (35) are distributed in a rectangular shape.

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