Food and feed protein content nondestructive testing device using terahertz time-domain spectroscopy

Abstract

The invention discloses a food and feed protein content nondestructive testing device using terahertz time-domain spectroscopy, which is characterized in that a material receiving assembly transfers received powder to a mixed powder conveying assembly, and the mixed powder conveying assembly is used for sequentially conveying mixed powder bearing bases to working points of the material receiving assembly according to fixed intervals; the material transferring assembly is used for transferring powder in the material receiving assembly located at the position of the mixed powder conveying assembly into the mixed powder bearing base; the material moving assembly comprises a vertical moving mechanism and a vacuum material suction mechanism arranged on the vertical moving mechanism, a material stirring assembly is installed on the vertical moving mechanism, and when the material stirring assembly moves up and down, the material receiving assembly is driven to rotate between the material storage barrel and the mixed powder conveying assembly in a reciprocating mode. Powder in the material receiving assembly located at the position of the mixed powder conveying assembly is transferred into the mixed powder bearing base through the vacuum material suction mechanism; according to the invention, unmanned preparation of mixed tablets is realized, and the accuracy of detection results is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of protein detection, and in particular to a non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy. Background Art

[0002] Using terahertz time-domain spectroscopy (THz-TDS) to measure protein content in food and feed is an emerging non-destructive analytical technology based on the interaction of terahertz waves with molecular vibrations, rotational energy levels, and hydrogen bond networks in substances. The specific method and steps are as follows:

[0003] 1. Sample preparation;

[0004] Drying treatment: Terahertz waves are easily absorbed by moisture, so high-moisture samples need to be freeze-dried or dried at low temperature to reduce moisture interference.

[0005] Uniform pulverization: Grind the sample into a uniform powder with a particle size smaller than the terahertz wavelength, usually <100μm, to ensure the consistency of the spectral signal.

[0006] Tablet molding: Mix the powder with terahertz transparent media such as polyethylene (PE) or polytetrafluoroethylene (PTFE) and press them into tablets, or directly use uniform thin film samples.

[0007] 2. Terahertz time-domain spectroscopy measurement;

[0008] Reference scan: First measure the terahertz pulse reference signal without a sample.

[0009] Sample scanning: Place the prepared sample in the light path and measure the transmission or reflection signal.

[0010] Parameter extraction:

[0011] Time domain signal: records the time delay and amplitude attenuation of the terahertz pulse after it passes through the sample.

[0012] Frequency domain analysis: The absorption coefficient α and refractive index n spectrum are obtained through Fourier transform.

[0013] Most existing technologies use manual tableting to form multiple powders mixed with terahertz transparent media such as polyethylene (PE) or polytetrafluoroethylene (PTFE) and pressed into tablets. The protein content in the multiple mixed tablets is measured using terahertz time-domain spectroscopy, and the protein content of the food or feed is determined by averaging the values. However, manual tableting has problems such as different amounts of mixed powder and low efficiency. Summary of the Invention

[0014] The purpose of the present invention is to provide a non-destructive detection device for the protein content of food and feed using terahertz time-domain spectroscopy, so as to solve the technical problems of the prior art of using manual tableting, which has different amounts of mixed tableting powder and low efficiency.

[0015] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0016] A non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy, comprising:

[0017] A material receiving assembly is installed below a storage barrel containing a food or feed mixed powder, and is used to receive the powder discharged quantitatively from the storage barrel and transfer the received powder to the mixed powder transmission assembly;

[0018] A mixed powder material transmission component is provided on the side of the material receiving component, and is used to sequentially transmit the mixed powder material carrying base to the working point of the material receiving component at fixed intervals;

[0019] a material transfer assembly, disposed directly above the mixed powder material transmission assembly, for transferring the powder material in the material receiving assembly located at the position of the mixed powder material transmission assembly to the mixed powder material carrying base, so that the amount of powder material in each of the mixed powder material carrying bases is the same;

[0020] The material receiving assembly includes a reciprocating rotating mechanism and a material receiving plate provided on the reciprocating rotating mechanism, and the reciprocating rotating mechanism reciprocates between the material storage barrel and the mixed powder transmission assembly to transfer the powder discharged quantitatively from the material storage barrel to the mixed powder transmission assembly;

[0021] The material shifting assembly includes a vertical shifting mechanism and a vacuum material suction mechanism arranged on the vertical shifting mechanism. The vertical shifting mechanism is equipped with a material shifting assembly that moves up and down synchronously. When the material shifting assembly moves up and down, it drives the reciprocating rotating mechanism to rotate back and forth between the material storage barrel and the mixed powder material transmission assembly, and transfers the powder in the material receiving assembly at the position of the mixed powder material transmission assembly to the mixed powder material carrying base through the vacuum material suction mechanism.

[0022] As a preferred solution of the present invention, the mixed powder transmission component includes a drive transmission component and a mixed powder supporting base driven to shift by the drive transmission component, the upper end surface of the mixed powder supporting base is a horizontal plane, and the upper end surface of the mixed powder supporting base is provided with an outer wrapping panel, and the outer wrapping panel is used to limit the distribution of powder at the center position of the upper end surface of the mixed powder supporting base.

[0023] As a preferred embodiment of the present invention, the mixed powder supporting base includes a lower gravity block and an upper circular panel connected to the upper end of the lower gravity block, wherein the diameter of the upper circular panel is larger than the diameter of the mixed tablet;

[0024] The drive transmission assembly includes a flat plate and a sinking trough arranged on the upper surface of the flat plate. The mixed powder carrying base is in the sinking trough. The groove walls on both sides of the sinking trough are provided with supporting cross plates. The lower surface of the upper circular panel is provided with a card plate. Transmission chains are provided on both sides of the sinking trough, and the transmission chain is provided with a groove for fixing the card plate. The transmission chain is matched and engaged with the card plate of the upper circular panel through the groove to fix the mixed powder carrying base.

[0025] As a preferred solution of the present invention, the reciprocating rotating mechanism includes an inner fixed rod and an outer rotating sleeve sleeved on the inner fixed rod, a baffle and a receiving tray with a vertical angle are installed on the outer rotating sleeve, wherein the baffle is located above the receiving tray, and a return spring is provided on the outer sleeve of the outer rotating sleeve, one end of the return spring is connected to the receiving tray, and the other end of the return spring is fixed to the inner fixed rod;

[0026] When the material shifting assembly moves downward, the baffle is driven to rotate, so that the receiving plate is rotated from the mixed powder transmission assembly to the material storage barrel to receive the powder quantitatively discharged from the material storage barrel;

[0027] When the material-diverting assembly moves upward, the material-receiving plate rotates from the material storage barrel to the mixed powder transmission assembly under the drive of the return spring, so as to transfer the powder material quantitatively discharged from the material storage barrel to the mixed powder transmission assembly, and the powder material in the material-receiving assembly at the position of the mixed powder transmission assembly is sucked by the vacuum suction mechanism;

[0028] When the material-diverting assembly moves downward, it drives the baffle to rotate, so that the receiving plate rotates from the mixed powder transmission assembly to the storage barrel to receive the powder discharged quantitatively from the storage barrel, and transfers the adsorbed powder to the mixed powder carrying base through the vacuum suction mechanism.

[0029] As a preferred embodiment of the present invention, the vertical displacement mechanism includes a support frame and a lifting plate arranged in the support frame, a driving cylinder is installed at the upper end of the support frame, a telescopic shaft of the driving cylinder is connected to the lifting plate, and the driving cylinder drives the lifting plate to move up and down when it moves in a telescopic manner;

[0030] The vacuum material suction mechanism is mounted on the lifting plate, and the driving cylinder drives the vacuum material suction mechanism to move up and down synchronously when the driving cylinder moves in a telescopic manner.

[0031] As a preferred embodiment of the present invention, the vacuum material suction mechanism includes a material holding cavity and a material suction pump provided at the upper end of the material holding cavity, the material holding cavity below the material suction pump forms a negative pressure space, and a material nozzle communicating with the negative pressure space is installed at the lower end of the material holding cavity;

[0032] When the suction pump is working, a negative pressure space is formed at the lower end of the material holding cavity, and the powder in the receiving tray is adsorbed by the material nozzle;

[0033] When the suction pump stops working, the powder in the negative pressure space is transferred to the mixed powder carrying base by gravity.

[0034] As a preferred solution of the present invention, a start button is provided at the upper end of the support frame, and a pause button is provided at the lower end of the support frame;

[0035] When the lifting plate moves upward and the start button is turned on, the receiving tray transfers the powder material quantitatively discharged from the storage barrel to the mixed powder material transmission assembly, and the working vacuum suction mechanism absorbs the powder material in the receiving assembly at the position of the mixed powder material transmission assembly;

[0036] When the lifting plate moves downward and the pause button is turned on, the vacuum suction mechanism stops working, and the powder in the vacuum suction mechanism falls into the mixed powder carrying base under the action of its gravity.

[0037] As a preferred solution of the present invention, the material shifting assembly includes a transverse support rod installed on the lower end surface of the lifting plate, and a drooping shifting plate provided at the end of the transverse support rod, wherein the drooping shifting plate is always located in the angle space between the baffle and the receiving tray;

[0038] In which, the drooping plate is provided with an inclined surface on the side facing the baffle. When the lifting plate moves downward, the baffle rotates under the push of the inclined surface of the drooping plate to drive the receiving tray to move to the bottom of the storage barrel. When the lifting plate moves upward, the baffle rotates in the opposite direction under the driving action of the return spring to drive the receiving tray to move to the mixed powder transmission assembly.

[0039] As a preferred solution of the present invention, the receiving tray includes a connecting rod fixed on the outer rotating sleeve, and a conical tray arranged at the end of the connecting rod. When the lifting plate moves upward, the baffle rotates in the opposite direction under the driving action of the return spring to drive the receiving tray to move to the mixed powder transmission assembly. The material nozzle is located directly above the conical tray to absorb the powder in the conical tray.

[0040] As a preferred solution of the present invention, a rubber soft sleeve is provided at the lower end of the nozzle, the rubber soft sleeve is trumpet-shaped, and a cutting groove is provided at the lower edge of the rubber soft sleeve. When the lifting plate moves downward to the lowest point, the rubber soft sleeve covers the powder on the receiving tray.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The present invention realizes unmanned automated mixed tablet preparation, so that the content of the mixed food or feed in the mixed tablets prepared each time is similar, thereby reducing the error in the protein content detection results in multiple mixed tablets and improving the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0044] Figure 1 This is a schematic diagram of the overall structure of the material moving assembly when moving upwards according to an embodiment of the present invention;

[0045] Figure 2 This is a schematic diagram of the overall structure of the material moving assembly when it moves downward according to an embodiment of the present invention;

[0046] Figure 3 This is a schematic structural diagram of a drive transmission assembly according to an embodiment of the present invention;

[0047] Figure 4 This is a structural diagram of the mixed powder carrying base when locked in an embodiment of the present invention;

[0048] Figure 5 Schematic diagram of the structure of the reciprocating rotating mechanism according to an embodiment of the present invention;

[0049] Figure 6 Schematic diagram of the overall structure of the vertical shifting mechanism according to an embodiment of the present invention;

[0050] Figure 7 Schematic diagram of the installation structure of the lifting plate according to an embodiment of the present invention.

[0051] The numbers in the figure represent the following:

[0052] 1- Material receiving assembly; 2- Mixed powder transmission assembly; 3- Material transfer assembly; 4- Start button; 5- Pause button; 6- Rubber soft cover; 7- Cutting strip groove;

[0053] 11- reciprocating rotating mechanism; 12- receiving tray;

[0054] 21- drive transmission assembly; 22- mixed powder bearing base; 23- outer wrapping panel;

[0055] 31- vertical shift mechanism; 32- vacuum suction mechanism; 33- material shifting assembly;

[0056] 111 - internal fixing rod; 112 - external rotating sleeve; 113 - baffle; 114 - return spring;

[0057] 121-connecting rod; 122-conical disc;

[0058] 211- plane plate; 212- sinking trough; 213- supporting horizontal plate; 214- clamping plate; 215- transmission chain; 216- groove;

[0059] 221-lower gravity block; 222-upper circular panel;

[0060] 311-support frame; 312-lifting plate; 313-driving cylinder;

[0061] 321-material holding cavity; 322-suction pump; 323-material nozzle;

[0062] 331- transverse support rod; 332- drooping plate. DETAILED DESCRIPTION

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0064] like Figure 1 and Figure 2 As shown, the present invention provides a non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy, which includes a material receiving component 1, a mixed powder transmission component 2 and a material moving component 3.

[0065] The material receiving assembly 1 is installed below a storage barrel containing food or feed mixed powder. The material receiving assembly 1 is used to receive the powder discharged quantitatively from the storage barrel and transfer the received powder to the mixed powder transmission assembly 2.

[0066] The mixed powder transmission component 2 is arranged on the side of the material receiving component 1, and the mixed powder transmission component 2 is used to transmit the mixed powder carrying base 22 to the working point of the material receiving component 1 in sequence at fixed intervals.

[0067] The material moving assembly 3 is arranged directly above the mixed powder transmission assembly 2. The material moving assembly 3 is used to transfer the powder in the material receiving assembly 1 at the position of the mixed powder transmission assembly 2 to the mixed powder carrying base 22, so that the amount of powder in each mixed powder carrying base 22 is the same.

[0068] Among them, the material receiving component 1 includes a reciprocating rotating mechanism 11 and a material receiving plate 12 arranged on the reciprocating rotating mechanism 11. The reciprocating rotating mechanism 11 rotates back and forth between the material storage barrel and the mixed powder transmission component 2 to transfer the powder discharged quantitatively from the material storage barrel to the mixed powder transmission component 2.

[0069] The material shifting assembly 3 includes a vertical shifting mechanism 31 and a vacuum material suction mechanism 32 arranged on the vertical shifting mechanism 31. A material shifting assembly 33 that moves up and down synchronously is installed on the vertical shifting mechanism 31. When the material shifting assembly 33 moves up and down, it drives the reciprocating rotating mechanism 11 to rotate back and forth between the material storage barrel and the mixed powder transmission assembly 2, and transfers the powder in the material receiving assembly 1 at the position of the mixed powder transmission assembly 2 to the mixed powder supporting base 22 through the vacuum material suction mechanism 32.

[0070] This embodiment can realize the automated non-destructive detection of the protein content of food and feed, wherein it can realize automated mixing and tableting, automated measurement of protein content by terahertz time-domain spectroscopy, and automated analysis and determination of protein content by computer models.

[0071] Among them, in this embodiment, the tableting operation for non-destructive detection of protein content in food and feed using terahertz time-domain spectroscopy is automated. Specifically, the ground food or feed powder is mixed and stirred with a terahertz transparent medium such as polyethylene PE or polytetrafluoroethylene PTFE to form a mixed powder, and the mixed powder is poured into a storage barrel.

[0072] The storage barrel discharges a fixed amount of powder into the receiving component 1 at a time, and the receiving component 1 transfers the received powder to the bottom of the moving component 3. The moving component 3 absorbs the mixed powder in the receiving component 1 and transfers it to each mixed powder supporting base 22 in the mixed powder transmission component 2. The mixed powder supporting base 22 is transferred to the downstream extrusion component to extrude the mixed powder on the mixed powder supporting base 22 into sheets.

[0073] In order to form multiple mixed powder tablets, this embodiment sets a plurality of evenly distributed mixed powder supporting bases 22 on the mixed powder transmission component 2, that is, the distance between two adjacent mixed powder supporting bases 22 is the same, and in order to ensure that the amount of powder in each mixed powder supporting base is the same and to prevent the powder from spilling within the distance between the two mixed powder supporting bases 22, this embodiment specially sets a material receiving component 1 to quantitatively receive the powder discharged from the storage barrel containing food or feed mixed powder, and transfer the powder to the position of the mixed powder supporting base 22, thereby realizing quantitative transfer and effectively preventing the powder from spilling.

[0074] As a preferred embodiment of this embodiment, in order to realize the combined cooperation of the material moving component 3 and the material receiving component 1, this embodiment drives the material receiving plate 12 on the reciprocating rotating mechanism 11 to reciprocate between the material storage barrel and the mixed powder supporting base 22 through the material shifting component 33.

[0075] That is, when the vacuum suction mechanism 32 moves downward, the material receiving tray 12 is driven by the material shifting assembly 33 to move to the bottom of the storage barrel containing the food or feed mixed powder, and receives the quantitative mixed powder discharged from the storage barrel.

[0076] When the vacuum suction mechanism 32 moves upward, the receiving tray 12 automatically moves to the bottom of the vacuum suction mechanism 32 under the drive of the reciprocating rotating mechanism 11 , and the vacuum suction mechanism 32 absorbs the mixed powder received in the receiving tray 12 .

[0077] Then, when the vacuum suction mechanism 32 moves downward, the material receiving tray 12 is driven by the material shifting assembly 33 to move to the bottom of the storage barrel containing the food or feed mixed powder, and continues to receive the mixed powder discharged in a quantitative manner from the storage barrel. The vacuum suction mechanism 32 will absorb the mixed powder received in the material receiving tray 12 and discharge it into the mixed powder supporting base 22.

[0078] The mixed powder transmission component 2 includes a drive transmission component 21 and a mixed powder supporting base 22 driven to shift by the drive transmission component 21. The upper end surface of the mixed powder supporting base 22 is a horizontal plane, and the upper end surface of the mixed powder supporting base 22 is provided with an outer wrapping panel 23. The outer wrapping panel 23 is used to limit the distribution of powder in the center position of the upper end surface of the mixed powder supporting base 22.

[0079] The mixed powder supporting base 22 includes a lower gravity block 221 and an upper circular panel 222 connected to the upper end of the lower gravity block 221 . The diameter of the upper circular panel 222 is larger than the diameter of the mixed tablet.

[0080] like Figure 3 and Figure 4As shown, the drive transmission component 21 includes a flat plate 211 and a sinking groove 212 arranged on the upper surface of the flat plate 211. The mixed powder carrying base 22 is in the sinking groove 212. The groove walls on both sides of the sinking groove 212 are provided with supporting cross plates 213. The lower surface of the upper circular panel 222 is provided with a card plate 214. Transmission chains 215 are provided on both sides of the sinking groove 212, and the transmission chain 215 is provided with a groove 216 for fixing the card plate 214. The transmission chain 215 is matched and engaged with the card plate 214 of the upper circular panel 222 through the groove 216 to fix the mixed powder carrying base 22.

[0081] In this embodiment, in order to automatically prepare multiple mixed tablets, the mixed powder carrying base 22 is placed on the transmission chain 215, specifically, the clamping plate 214 of the upper circular panel 222 is placed in the groove 216 of the transmission chain 215, and the spacing between all the mixed powder carrying bases 22 is the same. When the transmission chain 215 is driven, the mixed powder carrying base 22 is sequentially transmitted to the bottom of the vacuum suction mechanism 32.

[0082] The mixed powder discharged by the vacuum suction mechanism 32 is specifically located inside the outer wrapping panel 23 , and the outer wrapping panel 23 is used to limit the distribution of the powder at the center position of the upper end surface of the mixed powder bearing base 22 .

[0083] When the mixed powder carrying base 22 is transferred to the bottom of the vacuum suction mechanism 32 in sequence, the reciprocating rotating mechanism 11 transfers the mixed powder in the receiving tray 12 to the top of the mixed powder carrying base 22. After the vacuum suction mechanism 32 absorbs the mixed powder, the reciprocating rotating mechanism 11 transfers the receiving tray 12 again to the bottom of the storage barrel. At this time, the vacuum suction mechanism 32 just transfers the absorbed mixed powder to the mixed powder carrying base 22, thereby realizing the transfer of the mixed powder and facilitating the subsequent pressing of the mixed powder into tablets.

[0084] like Figure 1 、 Figure 2 and Figure 5 As shown, the reciprocating rotating mechanism 11 includes an inner fixed rod 111 and an outer rotating sleeve 112 mounted on the inner fixed rod 111, and a baffle 113 with a vertical angle and a receiving tray 12 are installed on the outer rotating sleeve 112, wherein the baffle 113 is above the receiving tray 12, and a return spring 114 is provided on the outer sleeve of the outer rotating sleeve 112, one end of the return spring 114 is connected to the receiving tray 12, and the other end of the return spring 114 is fixed on the inner fixed rod 111.

[0085] When the material shifting assembly 33 moves downward, the baffle 113 is driven to rotate, so that the material receiving plate 12 is rotated from the mixed powder transmission assembly 2 to the material storage barrel to receive the powder quantitatively discharged from the material storage barrel.

[0086] When the material shifting assembly 33 moves upward, the material receiving plate 12 is driven by the return spring 114 to rotate from the material storage barrel to the mixed powder transmission assembly 2, so as to transfer the powder discharged quantitatively from the material storage barrel to the mixed powder transmission assembly 2, and absorb the powder in the material receiving assembly 1 at the position of the mixed powder transmission assembly 2 through the vacuum suction mechanism 32.

[0087] When the material shifting assembly 33 moves downward, it drives the baffle 113 to rotate, so that the receiving plate 12 rotates from the mixed powder transmission assembly 2 to the storage barrel to receive the powder discharged quantitatively from the storage barrel, and transfers the adsorbed powder to the mixed powder carrying base 22 through the vacuum suction mechanism 32.

[0088] like Figure 6 As shown, the vertical shift mechanism 31 includes a support frame 311 and a lifting plate 312 arranged in the support frame 311. A driving cylinder 313 is installed at the upper end of the support frame 311. The telescopic shaft of the driving cylinder 313 is connected to the lifting plate 312. When the driving cylinder 313 moves in telescopic motion, it drives the lifting plate 312 to move up and down.

[0089] The vacuum material suction mechanism 32 is installed on the lifting plate 312, and the driving cylinder 313 drives the vacuum material suction mechanism 32 to move up and down synchronously when the driving cylinder 313 moves telescopically.

[0090] After the material moving assembly 3 transfers the mixed powder to the mixed powder carrying base 22 , the material moving assembly 3 moves upward until the next empty mixed powder carrying base 22 moves to right below the material moving assembly 3 .

[0091] The initial position of the receiving tray 12 is directly below the material moving assembly 3. Therefore, when the material moving assembly 3 moves to the uppermost end, the receiving tray 12 automatically resets to directly below the material moving assembly 3 under the action of the reset spring 114, and the mixed powder in the receiving tray 12 is also directly below the material moving assembly 3.

[0092] When the vacuum suction mechanism 32 completely absorbs the mixed powder in the receiving tray 12, the material moving component 3 moves downward, and during the downward movement of the material moving component 3, the material digging component 33 is synchronously driven to move downward. When the material digging component 33 moves downward, the baffle 113 is driven to rotate, so that the receiving tray 12 is rotated from the mixed powder transmission component 2 to the storage barrel to receive the powder discharged quantitatively from the storage barrel, and the adsorbed powder is transferred to the mixed powder supporting base 22 through the vacuum suction mechanism 32.

[0093] The vacuum suction mechanism 32 includes a material holding cavity 321 and a material suction pump 322 arranged at the upper end of the material holding cavity 321. The material holding cavity 321 below the material suction pump 322 forms a negative pressure space, and the lower end of the material holding cavity 321 is equipped with a material nozzle 323 that communicates with the negative pressure space.

[0094] When the suction pump 322 is working, a negative pressure space is formed at the lower end of the material holding cavity 321 , and the powder in the receiving tray 12 is sucked by the material nozzle 323 .

[0095] When the suction pump 322 stops working, the powder in the negative pressure space is transferred to the mixed powder carrying base 22 by gravity.

[0096] like Figure 7 As shown, a start button 4 is provided at the upper end of the support frame 311 , and a pause button 5 is provided at the lower end of the support frame 311 .

[0097] When the lifting plate 312 moves upward and the start button 4 is turned on, the receiving tray 12 transfers the powder discharged quantitatively from the storage barrel to the mixed powder transmission component 2, and the working vacuum suction mechanism 32 absorbs the powder in the receiving component 1 at the position of the mixed powder transmission component 2.

[0098] When the lifting plate 312 moves downward and the pause button 5 is turned on, the vacuum suction mechanism 32 stops working, and the powder in the vacuum suction mechanism 32 falls into the mixed powder supporting base 22 under the action of gravity.

[0099] It should be further explained that, after the material moving assembly 3 transfers the mixed powder to the mixed powder carrying base 22 , the material moving assembly 3 moves upward until the next empty mixed powder carrying base 22 moves to directly below the material moving assembly 3 .

[0100] When the material transfer component 3 moves upward to the highest end, the receiving tray 12 transfers the powder material quantitatively discharged from the storage barrel to the bottom of the material transfer component 3. At this time, the lifting plate 312 moves upward and turns on the start button 4. The vacuum suction mechanism 32 is energized and the powder material in the receiving tray 12 is adsorbed into the negative pressure space through the nozzle 323.

[0101] When the material moving component 3 moves downward to the lowest end, the material receiving tray 12 is moved to the bottom of the material storage barrel through the material shifting component 33. At this time, the lifting plate 312 moves downward and the pause button 5 is turned on. The vacuum suction mechanism 32 is powered off, and the powder in the negative pressure space is transferred to the upper end surface of the mixed powder supporting base 22 through the material nozzle 323 under the action of its own weight.

[0102] In order to achieve the downward movement of the material shifting assembly 33 and drive the material receiving tray 12 to be transferred to the bottom of the material storage barrel, the material shifting assembly 33 includes a transverse support rod 331 installed on the lower end surface of the lifting plate 312, and a drooping shifting plate 332 arranged at the end of the transverse support rod 331. The drooping shifting plate 332 is always located in the angle space between the baffle 113 and the material receiving tray 12.

[0103] Among them, the drooping plate 332 is provided with an inclined surface on the side facing the baffle 113. When the lifting plate 312 moves downward, the baffle 113 rotates under the push of the inclined surface of the drooping plate 332 to drive the receiving tray 12 to move to the bottom of the storage barrel. When the lifting plate 312 moves upward, the baffle 113 rotates in the opposite direction under the driving action of the return spring 114 to drive the receiving tray 12 to move to the mixed powder transmission component 2.

[0104] The receiving tray 12 includes a connecting rod 121 fixed on the outer rotating sleeve 112, and a conical tray 122 arranged at the end of the connecting rod 121. When the lifting plate 312 moves upward, the baffle 113 rotates in the opposite direction under the driving action of the return spring 114 to drive the receiving tray 12 to move to the mixed powder transmission assembly 2. The material nozzle 323 is located directly above the conical tray 122 to absorb the powder in the conical tray 122.

[0105] like Figure 6 As shown, a rubber sleeve 6 is provided at the lower end of the nozzle 323. The rubber sleeve 6 is trumpet-shaped and a cutting groove 7 is provided at the lower edge of the rubber sleeve 6. When the lifting plate 312 moves downward to the lowest point, the rubber sleeve 6 covers the powder on the receiving tray 12.

[0106] When the material moving assembly 3 moves upward to the highest end, the receiving tray 12, driven by the return spring 114, transfers the powder discharged quantitatively from the storage barrel to the bottom of the material moving assembly 3. At this time, the powder in the conical disk 122 is at the bottom of the conical disk 122, and the nozzle 323 covers the powder at the bottom of the conical disk 122 through the rubber soft sleeve 6 at its lower end. The vacuum suction mechanism 32 is energized to work, and the powder in the receiving tray 12 is adsorbed into the negative pressure space through the nozzle 323.

[0107] When the new mixed powder carrying base 22 is transferred to the bottom of the material moving assembly 3, and the material moving assembly 3 moves downward to the lowest end, the baffle 113 of the material receiving assembly 1 rotates under the push of the inclined surface of the drooping plate 332 to drive the material receiving tray 12 to move to the bottom of the storage barrel.

[0108] The material transfer assembly 3 moves downward until the nozzle 323 is directly above the new mixed powder supporting base 22 , the vacuum suction mechanism 32 is powered off, and the powder in the mixed powder supporting base 22 is discharged into the mixed powder supporting base 22 through the nozzle 323 .

[0109] This embodiment realizes unmanned automated mixed tablet preparation, so that the content of mixed food or feed in the mixed tablets prepared each time is similar, so that the error of the protein content detection results in multiple mixed tablets is small, and the accuracy of the detection results is improved.

[0110] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy, characterized in that: include: A material receiving assembly (1) is installed below a storage barrel containing food or feed mixed powder, and the material receiving assembly (1) is used to receive the powder discharged quantitatively from the storage barrel and transfer the received powder to the mixed powder transmission assembly (2); A mixed powder material transmission component (2) is arranged on the side of the material receiving component (1), and the mixed powder material transmission component (2) is used to sequentially transmit the mixed powder material bearing base (22) to the working point of the material receiving component (1) at fixed intervals; A material transfer assembly (3) is arranged directly above the mixed powder material transmission assembly (2), and the material transfer assembly (3) is used to transfer the powder material in the material receiving assembly (1) at the position of the mixed powder material transmission assembly (2) to the mixed powder material bearing base (22), so that the amount of powder material in each mixed powder material bearing base (22) is the same; The material receiving assembly (1) comprises a reciprocating rotating mechanism (11) and a material receiving plate (12) arranged on the reciprocating rotating mechanism (11), and the reciprocating rotating mechanism (11) reciprocates between the material storage barrel and the mixed powder transmission assembly (2) to transfer the powder quantitatively discharged from the material storage barrel to the mixed powder transmission assembly (2); The material shifting assembly (3) comprises a vertical shifting mechanism (31) and a vacuum material suction mechanism (32) arranged on the vertical shifting mechanism (31); a material shifting assembly (33) is installed on the vertical shifting mechanism (31) and moves up and down synchronously; when the material shifting assembly (33) moves up and down, it drives the reciprocating rotating mechanism (11) to rotate back and forth between the material storage barrel and the mixed powder material transmission assembly (2), and transfers the powder in the material receiving assembly (1) at the position of the mixed powder material transmission assembly (2) to the mixed powder material bearing base (22) through the vacuum material suction mechanism (32).

2. The non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy according to claim 1, characterized in that: The mixed powder material transmission component (2) comprises a drive transmission component (21) and a mixed powder material bearing base (22) driven to shift by the drive transmission component (21); the upper end surface of the mixed powder material bearing base (22) is a horizontal surface, and the upper end surface of the mixed powder material bearing base (22) is provided with an outer wrapping panel (23); the outer wrapping panel (23) is used to limit the distribution of powder material at the center position of the upper end surface of the mixed powder material bearing base (22).

3. The non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy according to claim 2, characterized in that: The mixed powder bearing base (22) comprises a lower gravity block (221) and an upper circular panel (222) connected to the upper end of the lower gravity block (221), wherein the diameter of the upper circular panel (222) is greater than the diameter of the mixed tablet; The drive transmission assembly (21) includes a plane plate (211) and a sinking groove (212) arranged on the upper surface of the plane plate (211). The mixed powder bearing base (22) is located in the sinking groove (212). The groove walls on both sides of the sinking groove (212) are provided with supporting transverse plates (213). The lower surface of the upper circular panel (222) is provided with a clamping plate (214). Transmission chains (215) are provided on both sides of the sinking groove (212), and the transmission chain (215) is provided with a groove (216) for fixing the clamping plate (214). The transmission chain (215) is matched and engaged with the clamping plate (214) of the upper circular panel (222) through the groove (216) to fix the mixed powder bearing base (22).

4. The non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy according to claim 1, characterized in that: The reciprocating rotating mechanism (11) comprises an inner fixed rod (111) and an outer rotating sleeve (112) sleeved on the inner fixed rod (111), a baffle (113) and a receiving tray (12) having a vertical angle are mounted on the outer rotating sleeve (112), wherein the baffle (113) is located above the receiving tray (12), and a return spring (114) is provided on the outer sleeve of the outer rotating sleeve (112), one end of the return spring (114) is connected to the receiving tray (12), and the other end of the return spring (114) is fixed to the inner fixed rod (111); When the material shifting assembly (33) moves downward, it drives the baffle (113) to rotate, so that the receiving plate (12) rotates from the mixed powder material transmission assembly (2) to the material storage barrel to receive the powder material quantitatively discharged from the material storage barrel; When the material shifting assembly (33) moves upward, the material receiving plate (12) is driven by the return spring (114) to rotate from the material storage barrel to the mixed powder transmission assembly (2) to transfer the powder quantitatively discharged from the material storage barrel to the mixed powder transmission assembly (2), and the powder in the material receiving assembly (1) at the position of the mixed powder transmission assembly (2) is adsorbed by the vacuum suction mechanism (32); When the material shifting assembly (33) moves downward, it drives the baffle (113) to rotate, so that the receiving plate (12) rotates from the mixed powder material transmission assembly (2) to the material storage barrel to receive the powder material quantitatively discharged from the material storage barrel, and transfers the adsorbed powder material to the mixed powder material carrying base (22) through the vacuum suction mechanism (32).

5. The non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy according to claim 4, characterized in that: The vertical displacement mechanism (31) comprises a support frame (311) and a lifting plate (312) arranged in the support frame (311); a driving cylinder (313) is installed at the upper end of the support frame (311); a telescopic shaft of the driving cylinder (313) is connected to the lifting plate (312); and when the driving cylinder (313) telescopes, it drives the lifting plate (312) to move up and down; The vacuum material suction mechanism (32) is mounted on the lifting plate (312), and the driving cylinder (313) drives the vacuum material suction mechanism (32) to move up and down synchronously when the driving cylinder (313) moves in a telescopic manner.

6. The non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy according to claim 5, characterized in that: The vacuum material suction mechanism (32) includes a material holding cavity (321) and a material suction pump (322) arranged at the upper end of the material holding cavity (321); the material holding cavity (321) below the material suction pump (322) forms a negative pressure space; and a material nozzle (323) communicating with the negative pressure space is installed at the lower end of the material holding cavity (321); When the suction pump (322) is in operation, a negative pressure space is formed at the lower end of the material holding cavity (321), and the powder material in the receiving tray (12) is adsorbed by the material nozzle (323); When the suction pump (322) stops working, the powder in the negative pressure space is transferred to the mixed powder bearing base (22) by gravity.

7. The non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy according to claim 5, characterized in that: The upper end of the support frame (311) is provided with a start button (4), and the lower end of the support frame (311) is provided with a pause button (5); When the lifting plate (312) moves upward and the start button (4) is turned on, the receiving tray (12) transfers the powder material quantitatively discharged from the storage barrel to the mixed powder material transmission component (2), and the working vacuum suction mechanism (32) absorbs the powder material in the receiving component (1) at the position of the mixed powder material transmission component (2); When the lifting plate (312) moves downward and the pause button (5) is turned on, the vacuum suction mechanism (32) stops working, and the powder in the vacuum suction mechanism (32) falls into the mixed powder supporting base (22) under the action of its gravity.

8. The non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy according to claim 5, characterized in that: The material shifting assembly (33) includes a transverse support rod (331) mounted on the lower end surface of the lifting plate (312), and a drooping shifting plate (332) arranged at the end of the transverse support rod (331), wherein the drooping shifting plate (332) is always located in the angle space between the baffle (113) and the receiving tray (12); The drooping plate (332) is provided with an inclined surface on the side facing the baffle (113); when the lifting plate (312) moves downward, the baffle (113) rotates under the pushing action of the inclined surface of the drooping plate (332) to drive the receiving plate (12) to move to the bottom of the storage barrel; when the lifting plate (312) moves upward, the baffle (113) rotates in the opposite direction under the driving action of the return spring (114) to drive the receiving plate (12) to move to the mixed powder transmission component (2).

9. The non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy according to claim 6, characterized in that: The receiving plate (12) includes a connecting rod (121) fixed on the outer rotating sleeve (112), and a conical plate (122) arranged at the end of the connecting rod (121). When the lifting plate (312) moves upward, the baffle (113) rotates in the opposite direction under the driving action of the return spring (114) to drive the receiving plate (12) to move to the mixed powder transmission component (2). The material nozzle (323) is located directly above the conical plate (122) to absorb the powder in the conical plate (122).

10. The non-destructive detection device for protein content in food and feed using terahertz time-domain spectroscopy according to claim 5, characterized in that: The lower end of the nozzle (323) is provided with a rubber sleeve (6), the rubber sleeve (6) is trumpet-shaped, and the lower edge of the rubber sleeve (6) is provided with a cutting groove (7). When the lifting plate (312) moves downward to the lowest point, the rubber sleeve (6) covers the powder on the receiving tray (12).

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