Detection particle for evaluating hydration state of cat body as well as preparation process and system of detection particle

Abstract

The invention belongs to the technical field of cat health. Firstly, the invention provides a preparation process and a preparation system of the detection particles for evaluating the hydration state of the cat body, secondly, the prepared detection particles are used for a detection bag, finally, the detection bag is used for evaluating the hydration state of the cat body, and related judgment standards include that the cat body is olive green, and the urine specific gravity value is 1.025; the beverage is olive brown, and the urine specific gravity value is 1.030; the beverage is olive light yellow, and the urine specific gravity value is 1.040; the urine is olive yellow, and the urine specific gravity value is 1.050. In the invention, the related detection particles can rapidly and accurately detect the urine specific gravity (Usg), so that the hydration state of the cat body can be evaluated, and a pet keeper can conveniently know the daily hydration state of the cat.

Description

Technical Field

[0001] The present invention specifically relates to a detection particle for evaluating the hydration status of a cat and a preparation process and system thereof, which are used to judge the hydration status and water intake of a cat, and belongs to the technical field of cat health monitoring. Background Art

[0002] As people's living standards continue to improve, more and more families are starting to keep cats, especially cats and dogs. Cats have even become an important member of the family, and their health is as important as that of the family members. Since cats have a strong tolerance to diseases, by the time the owner finds that the cat is sick, it has basically contracted a serious disease. Therefore, it is particularly important to effectively judge and detect the health of cats.

[0003] Water is necessary for maintaining life and is one of the important components of the cat's body. It plays a variety of physiological roles. The amount of water intake and excretion determines the body's hydration status. If the amount of water taken in is roughly equal to the amount of water excreted, the water in the body is in a state of water balance, that is, a normal hydration state; when the body takes in too little water (or loses too much water), the body is in a state of dehydration, which affects cognitive ability and physical fitness, and increases the risk of urinary system diseases; when the body takes in too much water, the body is in an overhydrated state, and severe cases may cause water poisoning. Therefore, in order to ensure the health and vitality of cats, it is necessary to evaluate the hydration status of cats at any time and in a timely manner.

[0004] At present, common tests for cats' hydration status include: total water intake test, urine test, hematology test, etc. Among them, urine test is a routine analysis, and the main items include urine osmotic pressure, urine specific gravity, urine output, urination frequency, etc. For urine test and hematology test, it is usually necessary to perform bladder puncture or blood draw on the cat, and pet owners need to take the cat to the cat hospital for testing regularly and at fixed locations, which is time-consuming and labor-intensive and extremely inconvenient; and the total water intake and urine output involved are also difficult to count and have large errors.

[0005] The prior art CN107205648A discloses a "hydration status indicator" and CN114340480A discloses a "hydration assessment system", both of which detect the hydration status of the human body. The urine specific gravity of a normal person will fluctuate greatly due to different diet, drinking, sweating and urination, and is generally 1.010-1.025. It fluctuates between 1.003-1.030 due to various conditions. For example, drinking a lot of water can reduce the urine specific gravity to 1.003, while drinking less water and sweating more can increase the urine specific gravity to 1.030. Even using a commonly used urine specific gravity detection agent, the urine specific gravity of the human body can be as high as 1.035.

[0006] As for cats, when a normal cat is obviously dehydrated, the urine specific gravity will exceed 1.045. Therefore, the urine specific gravity detector used for human testing cannot accurately show the hydration status of the cat's body. For example, the urine specific gravity of a healthy cat is 1.015-1.060. A lower urine specific gravity often indicates diabetes insipidus, chronic tubular nephritis, etc.; an increased urine specific gravity often indicates dehydration, acute nephritis, etc. Therefore, the urine specific gravity detector for humans cannot be directly applied to the urine specific gravity detection of cats, and there are currently very few studies involving the rapid assessment of the hydration status of cats. Therefore, there is an urgent need for a method that is convenient for pet owners to detect the hydration status of cats in daily life.

[0007] In addition, the urine specific gravity detection agent involved in the prior art is often used in the form of detection particles combined with cat litter exposed to the air, which requires that the detection particles themselves are not easily affected by environmental factors. The detection test papers currently available on the market are mostly composed of materials such as a hard base plate, a transparent label film, a white backing paper and a reaction membrane, which have the characteristics of strong water absorption and are easily affected by the environment, causing errors. Therefore, the substrate of the detection test paper involved is not suitable for cat urine specific gravity detection. For this reason, there is an urgent need for a substrate suitable for detecting cat urine specific gravity. Summary of the invention

[0008] The present invention aims to overcome the shortcomings of the prior art and proposes a detection particle for evaluating the hydration status of a cat and its preparation process and system. In this technical solution, a specific detection particle component formula is provided, and based on a specific processing technology, the prepared detection particles are ensured to quickly and accurately detect urine specific gravity (Usg), thereby realizing the evaluation of the hydration status of a cat, so that pet owners can understand the daily hydration status of cats, and at the same time, when cats are sick, it is also convenient to seek medical treatment in time.

[0009] In order to achieve the above technical objectives, the following technical solutions are proposed: The first purpose of the technical solution is to propose: a detection kit for evaluating the hydration status of a cat, comprising detection particles and a colorimetric card for colorimetric judgment; wherein the detection particles are obtained by spraying a substrate with a spraying liquid, and the spraying liquid is calculated by mass percentage as follows: 2.5-3% bromothymol blue, 68-70% methyl vinyl ether-maleic acid copolymer, and 27.5-29% sodium hydroxide; The color comparison card includes an olive green card position, an olive brown card position, an olive light yellow card position and an olive yellow card position. The olive green card position is provided with an olive green color rendering card, the olive brown card position is provided with an olive brown color rendering card, the olive light yellow card position is provided with an olive light yellow color rendering card, and the olive yellow card position is provided with an olive yellow color rendering card.

[0010] Furthermore, the indicator is one of bromophenol blue, phenolphthalein, thymolphthalein, phenol red, cresol red, australopithecin blue, methyl orange, neutral red, diphenylamine and Congo red, or a mixture of any two or more thereof.

[0011] Furthermore, the urine specific gravity detection agent is one of ethylene-methacrylic acid copolymer, polylactic acid-glycolic acid copolymer, methyl vinyl ether-maleic acid copolymer, maleic anhydride-acrylic acid copolymer, polyvinyl alcohol-polyacrylic acid copolymer, polylactic acid-glycolic acid copolymer, or a mixture of any two or more thereof.

[0012] Furthermore, the substrate is polyester fiber, wherein the substrate is specially designed for the particularity of the cat's body. The substrate is a granular material formed by polyester fiber, which is used to carry the detection agent and indicator, and has good weather resistance and resistance to organic solvents. At the same time, the substrate has the characteristics of strong adsorption, and can better carry an appropriate amount of detection agent and indicator; combined with a specific preparation process, the chemical properties of the product in this test package are stable, avoiding the unstable materials in the commonly used substrates in the prior art or the components that may be dissolved by cat urine, which eventually transfer and contaminate the sample and interfere with the test results. At the same time, it also improves the precision, accuracy and instantaneous color development of the test, and maintains the color development with a high timeliness for more than 48 hours, and is not easily affected by various types of cat litter components. It has the characteristics of non-toxicity, tastelessness, hygiene, and good safety, and reduces or avoids the harm caused by cats eating by mistake.

[0013] Furthermore, the colorimetric card is rectangular, 10 cm long and 6 cm wide; there is a 0.5 cm blank space between adjacent color cards in the colorimetric card, which enhances the judgment of ambiguous colors. The colorimetric card is a high-grade printing paper or coated paper made of base paper coated with white paint.

[0014] The second purpose of the technical solution is to propose: a method for evaluating the hydration status of a cat, comprising: Based on the calculation that each kg of cat litter corresponds to 8-20g of test particles in the test package, the test particles are mixed in the cat litter, and 30s-48h after the cat urinates, the test particles are compared with the colorimetric card for colorimetric judgment; The judgment criteria include: if it is olive green, the urine specific gravity value is 1.025; if it is olive brown, the urine specific gravity value is 1.030; if it is light olive yellow, the urine specific gravity value is 1.040; if it is olive yellow, the urine specific gravity value is 1.050.

[0015] The third purpose of the technical solution is to propose: a preparation process of detection particles for evaluating the hydration status of a cat, comprising the following steps: A. Preparation of Substrate Particles Using a pelletizer, the polyester fiber is prepared (heat-processed, stretched, and then cut) into cylindrical particles with a particle size of 3*5 cm under the conditions of a temperature of 190-220°C and a humidity of 25-30%; The temperature and humidity conditions are limited to ensure the stability and continuity of the particle preparation process. For example, if the temperature is too low, the wire drawing cannot be completed and is easy to break; if the temperature is too high, the polyester fiber will melt and not form. Therefore, the drawing temperature involved in the production process is extremely important, that is, to ensure the good performance of the obtained cylindrical particles. B. Mixed Weigh an indicator, a urine specific gravity detection agent and sodium hydroxide respectively, mix them, and obtain a spraying liquid, wherein the spraying liquid comprises, by mass percentage, 2.5-3% bromothymol blue, 68-70% methyl vinyl ether-maleic acid copolymer and 27.5-29% sodium hydroxide; Among them, as a preferred embodiment, the spraying liquid includes: 2.8% bromothymol blue, 69% methyl vinyl ether-maleic acid copolymer, and 28.2% sodium hydroxide, so as to ensure that the color development in subsequent detection is more obvious and easy to distinguish; C. Spraying The cylindrical particles obtained in step A are placed in a high-frequency ultrasonic oscillator, and the oscillation frequency of the high-frequency ultrasonic oscillator is controlled to be 40KHz and the power to be 2.85kw; At the same time, a sprayer is used, and the output voltage is set to 220V, the working voltage is 50V, the output current is 35A, the sprayer caliber is 0.8nm, the spraying air pressure is 0.29Mpa, the spraying liquid discharge volume is 150ML / min, the spraying distance is 200mm, and the spraying amplitude is 190mm. The spraying liquid obtained in step B is sprayed on the vibrating cylindrical particles to form a thin film on the surface of the cylindrical particles; Among them, spraying the vibrating cylindrical particles can ensure that the spraying liquid is evenly sprayed on the cylindrical particles, and can more evenly and effectively spray on the surface of the particle object to form a nano film, increase product stability, and thus improve the quality of the subsequent detection particles; D.Cure Within 0.8-1.5 hours after spraying, put the sprayed particles into the curing machine, set the curing machine output voltage to 220 V and the working voltage to 50 V, and cure for 3-8 minutes at 75-85 ° C. Turn the particles every half an hour to avoid color differences due to uneven heat source. The material transfer time between spraying and curing is set to 0.8-1.5hh, which can ensure that the spraying liquid / mixed powder fully and completely penetrates into the particles, thereby improving the spraying efficiency and quality, and facilitating subsequent curing; E. Sorting The solidified particles are placed in a sorting machine to remove unqualified particles and sample, pack and store qualified particles.

[0016] In addition, the technical solution also proposes a system that cooperates with the preparation process, including: an indicator storage tank, a urine specific gravity detection agent storage tank, a substrate storage tank, a granulator, a sprayer, a high-frequency ultrasonic oscillator, a curing machine, a sorting machine and a finished product temporary storage tank; The substrate storage tank is connected to the granulator through a substrate feeding pipe, the granulator is arranged at the rear side of the station of the substrate storage tank, and a metering pump is arranged on the substrate feeding pipe; the granulator is connected to a high-frequency ultrasonic oscillator, and the high-frequency ultrasonic oscillator is arranged at the rear side of the station of the granulator; The sprayer is arranged on one side of the high-frequency ultrasonic oscillator station, a mixer is arranged in front of the sprayer station, the indicator storage tank is connected to the mixer through an indicator feed pipe, the urine specific gravity detection agent storage tank is connected to the mixer through a urine specific gravity detection agent feed pipe, and metering pumps are arranged on the indicator feed pipe and the urine specific gravity detection agent feed pipe; the mixer is connected to the sprayer; The discharge port of the high-frequency ultrasonic oscillator is connected to the feed port of the curing machine, and the curing machine is arranged at the rear side of the workstation of the high-frequency ultrasonic oscillator; The discharge port of the curing machine is connected to the feed port of the sorting machine, and the sorting machine is arranged at the rear side of the station of the curing machine; The discharge port of the sorting machine is connected to the feed port of the finished product temporary storage tank, and the finished product temporary storage tank is arranged at the rear side of the workstation of the sorting machine; A continuous passage for preparing test particles for evaluating the hydration status of a cat body is formed between the mixer, the sprayer, the granulator, the high-frequency ultrasonic oscillator, the curing machine, the sorting machine and the finished product temporary storage tank.

[0017] Preferably, the curing machine is a UV curing machine, in which ultraviolet rays are used as a heat source to improve curing efficiency and quality and reduce energy consumption.

[0018] Preferably, the sorting machine is a fully intelligent sorting machine (such as: Meiya Taikai, weight 1000kg, power 1.5KW, intelligent control, feed particle size 154mm, degree of automation), and the fully intelligent sorting machine includes a hopper, a feeder, a chute, a signal processor, a high-definition camera, a sensor, a light source and a spray valve.

[0019] Preferably, a defective product collecting trough and a finished product collecting trough are provided at the rear side of the workstation of the sorting machine, and a finished product temporary storage tank is provided at the rear side of the workstation of the finished product collecting trough.

[0020] In the present technical solution, the urine specific gravity value (Usg) involved is an indicator reflecting the hydration status. Generally, Usg = 1.020 or Posm = 290 mOsm / kg is used as the critical indicator of hydration status. For cats, the normal urine specific gravity of healthy adult cats is in the range of 1.020-1.040. Due to drinking water and other reasons, the urine specific gravity value generally fluctuates in the range of 1.015-1.060. Generally speaking, a decrease in urine specific gravity (<1.020) often indicates that the cat is overhydrated or has kidney loss, etc.; an increase in urine specific gravity (>1.045) often indicates that the cat is obviously dehydrated, body fluids are lost through other channels, or acute nephritis, etc. In addition, for cats eating dry food, the urine specific gravity of the first urination in the morning is >1.035; while for cats eating canned food, the urine specific gravity of the first urination in the morning is >1.025.

[0021] In the present technical solution, the polyelectrolyte method is utilized, that is, the electrolytes in the urine undergo ion exchange with the urine specific gravity detection agent (methyl vinyl ether-maleic acid copolymer, etc.), and the cations in the electrolytes in the form of salts in the urine are exchanged with the polymers, releasing hydrogen ions, which undergo color changes with the acid-base indicator (bromophenol blue, etc.), and finally, the urine specific gravity is detected and used to evaluate the body's hydration status.

[0022] The positional relationships involved in this technical solution, such as "between", "on", "front side of the workstation", "rear side of the workstation", and "one side", are defined according to the actual usage conditions. They are conventional terms in this technical field and are also conventional terms used by technical personnel in this field in actual use.

[0023] The beneficial technical effects brought about by adopting this technical solution are: 1. In the present invention, an appropriate preparation process of the detection particles is adopted. Through the effective connection of each process and the limitation of each control condition, the controllability, stability and sustainability of the preparation process of the detection particles are ensured on the one hand, and the good performance of the obtained detection particles is ensured on the other hand, providing an effective prerequisite for its subsequent application; At the same time, a matching preparation system is also provided to ensure the stability of the preparation process and improve the preparation efficiency and quality; Second, in the present invention, based on the characteristics of the detection particles, they are formed into a detection package, which overcomes the inconvenience of the existing cat body hydration status detection and the problem that the detection process requires bladder puncture or blood drawing, which is not very cat-friendly; 3. The urine specific gravity test kit involved in the present invention has high accuracy, fast color development, and the color development lasts for more than 3 days. At the same time, it also has the characteristics of environmental protection and safety of the substrate (polyester fiber), rapid water lock, low dust, not easy to be taken out of the cat bowl, and high adsorption capacity, which greatly improves the user experience; Fourth, the detection particles involved in the present invention contain low levels of water and nutrients, which are not conducive to the growth of microorganisms in cat litter; 5. In the detection particles of the present invention, the use of the compound indicator can better realize the color reaction of the cat urine specific gravity value, and the cat's hydration status can be preliminarily warned through the color display, so that the pet owner can understand the cat's daily hydration status. At the same time, when the cat is sick, it is also convenient to seek medical treatment in time; Sixth, the present invention can be used with a variety of common cat litters, and the particle shape is similar to most cat litter particles. When mixed in the cat litter, it has little impact on the overall environment in the cat litter box, avoiding the impact on the cat caused by changing the cat litter. Cats are extremely sensitive animals. Once they have identified an environment, they are reluctant to change it easily. Even if there is only a slight change in the external environment, the cat will make a corresponding stress response. For example, suddenly changing to a new cat litter will make the cat alert and difficult to adapt to the new environment. The cat will hold back urine, which will cause certain harm to the body. In addition, the cat may not continue to excrete in the cat litter box, which will bring unnecessary trouble to the pet owner. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A flow chart of the preparation process in the invention; Figure 2 A schematic diagram of the urine specific gravity colorimetric card in the invention; Figure 3 It is a diagram of the test results during the use of the invention; Figure 4 To prepare a system structure diagram in the present invention; Figure 5 It is a schematic diagram of the working principle of the sorting machine in the present invention; Among them, in the figure, 1. indicator storage tank, 2. urine specific gravity detection agent storage tank, 3. substrate storage tank, 4. granulator, 5. sprayer, 6. oscillator, 7. curing machine, 8. sorter, 9. finished product temporary storage tank, 10. mixer, 11. defective product collection tank, 12. finished product collection tank, 13. substrate feed pipe, 14. metering pump, 15. indicator feed pipe, 16. urine specific gravity detection agent feed pipe. DETAILED DESCRIPTION

[0025] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0026] Example 1 This embodiment provides: a preparation process of detection particles for evaluating the hydration status of a cat, such as Figure 1As shown, the following steps are included: A. Preparation of granules: Using a granulator, the polyester fiber substrate is prepared into cylindrical granules with a particle size of 3*5 cm at a temperature of 190-220°C and a humidity of 25-30%; B. Mixing: Weigh the indicator and urine specific gravity detection agent separately, mix them, add sodium hydroxide to obtain the spray solution; C. Spraying: placing the cylindrical particles obtained in step A in an oscillator; at the same time, using a sprayer, spraying the spraying liquid obtained in step B on the oscillating cylindrical particles to form a thin film on the surface of the cylindrical particles; D. Curing: Within 0.8-1.5 hours after spraying, put the sprayed particles into the curing machine and cure them at 75-85℃ for 3-8 minutes; E. Sorting: Place the solidified particles in a sorting machine, remove unqualified particles, sample, pack and store qualified particles, and obtain test particles.

[0027] Example 2 In order to further ensure the controllability, stability and sustainability of the preparation process, this embodiment specifically defines: In step C, the oscillator is controlled to have an oscillation frequency of 40 KHz and a power of 2.85 kW; Control sprayer: output voltage 220V, working voltage 50V, output current 35A, sprayer aperture 0.8nm, spraying air pressure 0.29Mpa, spraying liquid output 150ML / min, spraying distance 200mm, spraying amplitude 190mm.

[0028] And, in step D, the curing machine is controlled: output voltage 220 V, working voltage 50 V; during the curing process, it is turned over every 0.5 hours.

[0029] Example 3 On the basis of Example 1-2, this example provides a detection particle for evaluating the hydration status of a cat, which is prepared by the aforementioned preparation process.

[0030] A detection particle for evaluating the hydration status of a cat's body, obtained by spraying a substrate with a spray liquid, wherein the spray liquid comprises, by mass percentage, 2.5-3% bromothymol blue, 68-70% methyl vinyl ether-maleic acid copolymer, and 27.5-29% sodium hydroxide; The indicator is one of bromophenol blue, phenolphthalein, thymolphthalein, phenol red, cresol red, australopithecin blue, methyl orange, neutral red, diphenylamine and Congo red, or a mixture of any two or more thereof.

[0031] The urine specific gravity detection agent is one of ethylene-methacrylic acid copolymer, polylactic acid-glycolic acid copolymer, methyl vinyl ether-maleic acid copolymer, maleic anhydride-acrylic acid copolymer, polyvinyl alcohol-polyacrylic acid copolymer, polylactic acid-glycolic acid copolymer, or a mixture of any two or more thereof.

[0032] The substrate is polyester fiber, which is specially designed for the particularity of the cat's body. The substrate is a granular material formed by polyester fiber, which is used to carry the detection agent and indicator, and has good weather resistance and resistance to organic solvents. At the same time, the substrate has a strong adsorption property and can better carry an appropriate amount of detection agent and indicator; combined with a specific preparation process, the chemical properties of the product in this test package are stable, avoiding unstable materials in the commonly used substrates in the prior art or containing ingredients that may be dissolved by cat urine, which eventually transfer and contaminate the sample and interfere with the test results. At the same time, it also improves the precision, accuracy and instantaneous color development of the test, and maintains the color development with a high timeliness for more than 48 hours, and is not easily affected by various types of cat litter components. It has the characteristics of non-toxicity, tastelessness, hygiene, and good safety, which reduces or avoids the harm caused by cats eating by mistake.

[0033] Example 4 On the basis of Examples 1-3, this Example provides a detection kit for evaluating the hydration status of a cat, including a colorimetric card for colorimetric judgment and detection particles prepared by the aforementioned preparation process.

[0034] Among them, Figure 2 As shown, the color comparison card includes an olive green card position, an olive brown card position, an olive light yellow card position and an olive yellow card position. The olive green card position is provided with an olive green color rendering card, the olive brown card position is provided with an olive brown color rendering card, the olive light yellow card position is provided with an olive light yellow color rendering card, and the olive yellow card position is provided with an olive yellow color rendering card.

[0035] The colorimetric card is rectangular, 10 cm long and 6 cm wide; there is a 0.5 cm blank space between adjacent color cards in the colorimetric card.

[0036] Example 5 Based on Example 4, this example provides a method for using a detection kit for evaluating the hydration status of a cat, comprising: Based on the calculation that each kg of cat litter corresponds to 8-20g of test particles in the test package, the test particles are mixed in the cat litter, and 30s-48h after the cat urinates, the test particles are compared with the colorimetric card for colorimetric judgment; The judgment criteria include: if it is olive green, the urine specific gravity value is 1.025; if it is olive brown, the urine specific gravity value is 1.030; if it is light olive yellow, the urine specific gravity value is 1.040; if it is olive yellow, the urine specific gravity value is 1.050.

[0037] The results are as follows Figure 3 As shown (wherein, the components and mass percentages of the spray liquid in the test particles are: 2.8% bromothymol blue, 69.0% methyl vinyl ether-maleic acid copolymer and 28.2% sodium hydroxide).

[0038] Example 6 On the basis of Example 1-2, Figure 4 As shown, this embodiment provides a preparation system of detection particles for evaluating the hydration status of a cat, comprising an indicator storage tank 1, a urine specific gravity detection agent storage tank 2, a polyester fiber substrate storage tank 3, a granulator 4, a sprayer 5, an oscillator 6, a curing machine 7, a sorter 8 and a finished product temporary storage tank 9; The polyester fiber base material storage tank 3 is connected to the granulator 4, and the granulator 4 is arranged at the rear side of the station of the polyester fiber base material storage tank 3; the granulator 4 is connected to the oscillator 6, and the oscillator 6 is arranged at the rear side of the station of the granulator 4; the sprayer 5 is arranged at one side of the station of the oscillator 6, and a mixer 10 is arranged at the front side of the station of the sprayer 5, the indicator storage tank 1 is connected to the mixer 10, and the urine specific gravity detection agent storage tank 2 is connected to the mixer 10; the mixer 10 is connected to the sprayer 5; the discharge port of the oscillator 6 is connected to the feed port of the curing machine 7, and the curing machine 7 is arranged at the rear side of the station of the oscillator 6; the discharge port of the curing machine 7 is connected to the feed port of the sorting machine 8, and the sorting machine 8 is arranged at the rear side of the station of the curing machine 7; the discharge port of the sorting machine 8 is connected to the feed port of the finished product temporary storage tank 9, and the finished product temporary storage tank 9 is arranged at the rear side of the station of the sorting machine 8; A continuous passage for preparing test particles for evaluating the hydration status of a cat body is formed between the mixer 10, the sprayer 5, the granulator 4, the vibrator 6, the solidifier 7, the classifier 8 and the finished product temporary storage tank 9.

[0039] Among them, the oscillator 6 is a high-frequency ultrasonic oscillator 6.

[0040] The curing machine 7 is an ultraviolet curing machine 7, in which ultraviolet rays are used as a heat source to improve curing efficiency and quality and reduce energy consumption.

[0041] The sorting machine 8 is a fully intelligent sorting machine 8 (such as: Meiya Taikai, weight 1000kg, power 1.5KW, intelligent control, feed particle size 154mm, degree of automation), and the fully intelligent sorting machine 8 includes a hopper, a vibrating feeder, a chute, a signal processor, a high-definition camera, a sensor, a light source and a spray valve, a defective tank and a finished product tank (such as Figure 5 as shown).

[0042] A defective product collecting tank 11 and a finished product collecting tank 12 are arranged at the rear side of the station of the sorting machine 8 , and a finished product temporary storage tank 9 is arranged at the rear side of the station of the finished product collecting tank 12 .

[0043] Discussion Example 1 The detection particles obtained in Example 1 are used, and solutions with different urine specific gravities are used to simulate cat urine (i.e., standard solution), and the solution is used to react with the detection particles to make them develop color. After multiple adjustments and tests, the technicians compare the final stable color of the detection particles with the Pantone color card to determine the color of the solutions with different specific gravities and formulate a color comparison card accordingly. This is to further illustrate the technical solution.

[0044] Among them, there are three groups of tests, mainly to improve the process for excessive coloration and unclear coloration, and to adjust the sensitivity of urine specific gravity detection agent (such as Figure 3 shown); Standard solutions include: potassium dihydrogen oxalate 0.05 mol / kg, potassium hydrogen tartrate saturated solution - potassium hydrogen phthalate 0.05 mol / kg, dipotassium hydrogen phosphate 0.025 mol / kg, sodium tetraborate 0.01 mol / kg; The results are shown in Table 1.

[0045] Discussion Example 2 This discussion example takes a cat as an example, provides a method for evaluating the hydration status of a cat in the prior art, and compares it with Example 5.

[0046] Among them, the prior art methods for assessing the hydration status of a cat include: The cat's basic information: number: CDMD202304, gender: male, BCS: 5, weight: 4.3kg, diet: free eating, drinking method: drinking water at multiple points, MCS: 3.

[0047] A. Take the cat to the cat hospital and calm the cat down; B. Preparation of hospital instruments and consumables: 22-gauge needles, 6-12mL syringes, alcohol cotton, shavers, disposable medical gloves, disinfectant alcohol, MASTER-VET cat urine specific gravity scale handheld refractometer (product model: MASTER-VET dual scale), etc.; C. Ensure and soothe the cat by lying on its side or back; D. Shave the skin at the cat's bladder puncture site and use palpation to fix the position of the bladder; compress the bladder from both sides of the abdomen to facilitate palpation and identification of the bladder.

[0048] E. Use a 22-gauge needle connected to a 6-12 mL syringe for bladder puncture; aim the needle toward the pelvic entrance to reduce bladder trauma, as the bladder will shrink after urine is drawn out; during the puncture, gently apply negative pressure to the syringe, and immediately aspirate urine after puncturing the bladder cavity; F. Soothe the cat's emotions. Use a cat urine specific gravity scale handheld refractometer to test the collected urine. The urine specific gravity value can be directly read through the refractive index and urine specific gravity curve.

[0049] Test results, urine specific gravity: 1.03; Result analysis: Urine specific gravity reflects the kidney's ability to concentrate urine and is used to monitor a cat's response to treatment. Urine tests only reflect the health of the animal's body over a short period of time. The cat's urine specific gravity test value was 1.03, which is within the normal range.

[0050] Then, based on Example 5 and Figure 3 It can be clearly seen that the detection method involved in the present invention is simpler and the results obtained are more intuitive. At the same time, there is no need to comfort the cat too much, and the hydration status can be evaluated by its normal routine, which is extremely convenient for pet owners.

Claims

1. A preparation process of detection particles for evaluating the hydration status of a cat, characterized in that: The following steps are included: A. Preparation of substrate particles: using a pelletizer, the polyester fiber substrate is prepared into cylindrical particles with a particle size of 3*5 cm at a temperature of 190-220°C and a humidity of 25-30%; B. Mixing: Weigh the indicator and urine specific gravity detection agent separately, mix them, add sodium hydroxide to obtain the spray solution; C. Spraying: placing the cylindrical particles obtained in step A in an oscillator; at the same time, using a sprayer, spraying the spraying liquid obtained in step B on the oscillating cylindrical particles to form a thin film on the surface of the cylindrical particles; D. Curing: Within 0.8-1.5 hours after spraying, put the sprayed particles into the curing machine and cure them at 75-85℃ for 3-8 minutes; E. Sorting: Place the solidified particles in a sorting machine, remove unqualified particles, sample, pack and store qualified particles, and obtain test particles.

2. The preparation process of the detection particles for evaluating the hydration status of a cat according to claim 1, characterized in that: The spraying liquid comprises, by mass percentage, 2.5-3% bromothymol blue, 68-70% methyl vinyl ether-maleic acid copolymer, and 27.5-29% sodium hydroxide.

3. The preparation process of the detection particles for evaluating the hydration status of a cat according to claim 2, characterized in that: In step C, the oscillator is controlled to have an oscillation frequency of 40 KHz and a power of 2.85 kW; Control sprayer: output voltage 220V, working voltage 50V, output current 35A, sprayer aperture 0.8nm, spraying air pressure 0.29Mpa, spraying liquid output 150ML / min, spraying distance 200mm, spraying amplitude 190mm.

4. The preparation process of the detection particles for evaluating the hydration status of a cat according to claim 3, characterized in that: In step D, the curing machine is controlled: output voltage 220 V, working voltage 50 V; During the curing process, turn it over every 0.5h.

5. A detection particle for evaluating the hydration status of a cat, characterized in that: The invention is prepared by the preparation process described in any one of claims 1 to 4.

6. A test kit for evaluating the hydration status of a cat, characterized in that: The invention comprises a colorimetric card for colorimetric judgment and detection particles prepared by the preparation process described in any one of claims 1 to 4.

7. The detection kit for evaluating the hydration status of a cat according to claim 6, characterized in that: The color comparison card includes an olive green card position, an olive brown card position, an olive light yellow card position and an olive yellow card position. The olive green card position is provided with an olive green color rendering card, the olive brown card position is provided with an olive brown color rendering card, the olive light yellow card position is provided with an olive light yellow color rendering card, and the olive yellow card position is provided with an olive yellow color rendering card.

8. The detection kit for evaluating the hydration status of a cat according to claim 7, characterized in that: The colorimetric card is rectangular, 10 cm long and 6 cm wide; in the colorimetric card, there is a 0.5 cm blank space between adjacent color developing cards.

9. A method for using a detection kit for evaluating the hydration status of a cat, characterized in that: include: Based on the calculation that each kg of cat litter corresponds to 8-20g of test particles in the test package, the test particles are mixed in the cat litter, and 30s-48h after the cat urinates, the test particles are compared with the colorimetric card for colorimetric judgment; The judgment criteria include: if it is olive green, the urine specific gravity value is 1.025; if it is olive brown, the urine specific gravity value is 1.030; if it is light olive yellow, the urine specific gravity value is 1.040; if it is olive yellow, the urine specific gravity value is 1.

050.

10. A system for preparing detection particles for evaluating the hydration status of a cat, characterized in that: It comprises an indicator storage tank (1), a urine specific gravity detection agent storage tank (2), a polyester fiber substrate storage tank (3), a granulator (4), a sprayer (5), an oscillator (6), a curing machine (7), a sorter (8) and a finished product temporary storage tank (9); The polyester fiber base material storage tank (3) is connected to a granulator (4), and the granulator (4) is arranged at the rear side of the station of the polyester fiber base material storage tank (3); the granulator (4) is connected to an oscillator (6), and the oscillator (6) is arranged at the rear side of the station of the granulator (4); The sprayer (5) is arranged on one side of the workstation of the oscillator (6); a mixer (10) is arranged on the front side of the workstation of the sprayer (5); the indicator storage tank (1) is connected to the mixer (10); the urine specific gravity detection agent storage tank (2) is connected to the mixer (10); and the mixer (10) is connected to the sprayer (5); The discharge port of the oscillating machine (6) is connected to the feed port of the curing machine (7), and the curing machine (7) is arranged at the rear side of the workstation of the oscillating machine (6); The discharge port of the curing machine (7) is connected to the feed port of the sorting machine (8), and the sorting machine (8) is arranged at the rear side of the station of the curing machine (7); The discharge port of the sorting machine (8) is connected to the feed port of the finished product temporary storage tank (9), and the finished product temporary storage tank (9) is arranged at the rear side of the workstation of the sorting machine (8); A continuous passage for preparing test particles for evaluating the hydration status of a cat body is formed between the mixer (10), the sprayer (5), the granulator (4), the vibrator (6), the solidifier (7), the classifier (8) and the finished product temporary storage tank (9).

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