Preparation process and equipment of color-changing cat litter

Abstract

The invention relates to the technical field of cat litter preparation and processing, in particular to a color-changing cat litter preparation process and equipment which comprises a supporting device, a drying device, a mixing device, a first tank body, a sieve pore cylinder body, a plug body, a connecting rod and a balancing weight. An opening is formed in the top end of the first tank; an aerator pipe is arranged at the bottom in the first tank; openings are formed in the upper end and the lower end of the screen hole barrel correspondingly, the screen hole barrel is rotationally installed on the supporting device, and the supporting device is used for providing power for rotation of the screen hole barrel and driving the screen hole barrel to vibrate and move and adjust. The plug body is arranged at an opening in the bottom end of the sieve pore cylinder; the bottom end of the connecting rod is connected with the plug body; the upper part of the connecting rod is slidably mounted on the sieve hole barrel; the device is reliable in structure, comprehensive in function coverage, simple in process and convenient to operate, the cat litter has the color changing function, the color can be changed according to the pH value change of the use environment, and an owner can conveniently know the use state of the cat litter in time.

Description

Technical Field

[0001] This invention relates to the technical field of cat litter preparation and processing, and in particular to a preparation process and equipment for color-changing cat litter. Background Technology

[0002] As a core consumable in the pet supplies industry, cat litter's market size has continued to expand with the rise of the pet economy. Among them, tofu cat litter dominates the high-end market due to its advantages such as being environmentally friendly, biodegradable, and producing less dust. However, traditional cat litter has a single function, only meeting basic needs such as water absorption and clumping, and cannot meet the upgraded needs of pet owners for health monitoring.

[0003] Currently, in existing cat litter preparation, such as the patent with announcement number CN119817477A, ​​the invention relates to the field of pet product technology, and in particular to a biodegradable cat litter and cat litter preparation process. The corn starch, tapioca starch and wheat starch used in this invention are all natural plant ingredients that are easy to biodegrade; at the same time, calcium carbonate is used as a filler.

[0004] Existing processes have revealed that they are not suitable for preparing color-changing cat litter, and the processing equipment has limited functionality, which reduces the efficiency of cat litter processing. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a process and equipment for preparing color-changing cat litter that features a reliable structure, comprehensive functions, simple process, and convenient operation. This equipment enables cat litter to change color according to changes in the pH of the environment, allowing owners to easily understand the status of the cat litter.

[0006] The present invention provides a device for preparing color-changing cat litter, comprising a support device, a drying device, a mixing device, a first tank, a sieve cylinder, a plug, a connecting rod, and a counterweight. The top of the first tank is provided with an opening, and the bottom of the first tank is provided with an aeration pipe. The screen cylinder has openings at both the top and bottom. The screen cylinder is rotatably mounted on a support device. The support device provides power for the rotation of the screen cylinder and is used to drive the screen cylinder to vibrate and move. The plug is positioned at the bottom opening of the sieve cylinder. The bottom end of the connecting rod is connected to the plug body, and the upper part of the connecting rod is slidably mounted on the screen hole cylinder. The counterweight is located at the top of the connecting rod; The drying device is located on the side of the first tank and is used to dry the cat litter. The mixing device is connected to the drying device. The mixing device is used to mix orange-scented cat litter with regular cat litter. A certain amount of bromothymol blue and anhydrous alcohol are mixed and stirred evenly in a first tank according to a mass ratio. The cat litter is placed inside a perforated cylinder, and then a support device moves the perforated cylinder into the first tank, allowing the cat litter inside the perforated cylinder to immerse in the mixture in the first tank. At this time, the support device causes the perforated cylinder to vibrate up and down, causing the cat litter inside the perforated cylinder to float up and down. Simultaneously, an aeration pipe aerates the mixture in the first tank, thereby improving the penetration effect and efficiency of the mixture on the cat litter. After the cat litter is fully soaked and absorbed in the mixture, it forms an orange-scented substance. Then, the perforated cylinder is moved upwards out of the mixture, and the mixture is passed through... The supporting device drives the sieve cylinder to rotate, causing the cat litter soaked in the sieve cylinder to be centrifuged and dried. The dried cat litter is then placed in a drying device for further drying. Subsequently, the dried cat litter is conveyed to a mixing device, where it is mixed with ordinary cat litter in a certain proportion to obtain the finished color-changing cat litter. The equipment has a reliable structure, comprehensive functions, simple process, and convenient operation. It does not require complex equipment or harsh reaction conditions, making it suitable for large-scale industrial production. By treating the cat litter with a mixed solution of bromothymol blue and anhydrous alcohol, the cat litter gains a color-changing function, which can change color according to changes in the pH of the environment. This allows pet owners to understand the status of the cat litter in a timely manner and determine whether it needs to be replaced, improving the convenience and hygiene of pet ownership.

[0007] Preferably, the drying device includes a second tank, a first valve, a support, a top rod, a conveying cylinder, spiral blades, a first motor, and an exhaust hood; The first valve is connected to the bottom of the second tank, and the output end of the first valve is connected to the mixing device. The bracket is installed on the upper part of the inner side wall of the second tank; The top rod is installed at the top of the bracket; The conveying cylinder is installed on the inner side wall of the second tank. The bottom end of the conveying cylinder is connected to the first valve. The lower part of the conveying cylinder is provided with multiple sets of feed inlets, and the upper part of the conveying cylinder is provided with multiple sets of discharge outlets. The spiral blades are rotated and installed inside the conveyor cylinder; The first motor is installed at the top of the conveyor cylinder, and the output end of the first motor is connected to the spiral blades; The exhaust hood is installed on the inner side wall of the second tank and is connected to the external hot air equipment. The support device moves the screen cylinder into the second tank. By pushing the plug body with the push rod, the plug body opens the opening at the bottom of the screen cylinder, allowing the cat litter dried in the screen cylinder to be discharged into the second tank. The cat litter entering the second tank flows into the conveying cylinder. The first motor drives the spiral blades to rotate, causing the spiral blades to circulate the cat litter up and down in the second tank. The external hot air equipment delivers hot air to the exhaust hood, which dries the cat litter, improving the drying efficiency.

[0008] Preferably, the mixing device includes a conveying device, a third tank, a discharge door, a feed hopper, a second motor, and a stirring paddle; The discharge door is located at the bottom of the third tank. The feed hopper is connected to the upper part of the third tank. The second motor is installed on the inner side wall of the third tank. The stirring paddle is rotated and installed inside the third tank, with its bottom end connected to the output end of the second motor. The conveying device is connected to the top of the third tank and is connected to the first valve. After the cat litter in the second tank is dried, the cat litter in the second tank is discharged by opening the first valve. Then, the conveying device is started to transport the cat litter discharged from the second tank to the third tank. Ordinary cat litter is put into the third tank through the feed hopper, so that the two types of cat litter are mixed. The second motor drives the agitator to rotate, which drives the third tank to rotate, so that the agitator mixes the two types of cat litter evenly. Finally, the color-changing cat litter is discharged by opening the discharge door.

[0009] Preferably, the conveying device includes a fourth tank, a second valve, a blower, and a conveying pipe; The fourth tank is connected to the top of the third tank, and the second valve is connected between the fourth tank and the third tank; The blower is connected to the top of the fourth tank, and a filter screen is installed at the input end of the blower; The bottom end of the delivery pipe is connected to the first valve, and the top end of the delivery pipe is connected to the fourth tank. When the first valve is opened, the fan draws air into the fourth tank, which then delivers the cat litter from the second tank to the fourth tank via the delivery pipe. Subsequently, by opening the second valve, the cat litter in the fourth tank is discharged into the third tank.

[0010] Preferably, the support device includes a moving device, a driving device, a first frame, a telescopic rod, a spring, a vibration motor, and a second frame; The screen cylinder is rotatably mounted on the first frame; The bottom ends of multiple sets of telescopic poles are connected to the top of the first frame; Multiple sets of springs are fitted together on multiple sets of telescopic rods; The vibration motor is installed on the outer wall of the first frame; The bottom of the second frame is connected to the top of multiple sets of telescopic rods. The second frame is mounted on a moving device, which is used to move the second frame. The drive unit is installed on the first frame and is used to drive the screen cylinder to rotate. By turning on the vibration motor, the vibration motor drives the first frame to vibrate up and down, thereby driving the screen cylinder to vibrate up and down, improving the floating effect of cat litter after it is immersed in the mixture. The drive unit drives the screen cylinder to rotate, which facilitates the centrifugal drying of the cat litter in the screen cylinder. The moving device drives the second frame to move and adjust, improving the convenience of moving the screen cylinder to different positions.

[0011] Preferably, the moving device includes a guide seat, a slider, a first hydraulic cylinder, a lead screw, and a third motor; The slider is slidably mounted on the guide seat, and the second frame is slidably mounted on the slider. The first hydraulic cylinder is mounted on the slider, and the moving end of the first hydraulic cylinder is connected to the second frame. The lead screw is rotatably mounted on the outer wall of the guide seat, and the slider is screwed onto the lead screw. The third motor is installed on the outer wall of the guide seat and connected to the lead screw. By controlling the extension and retraction adjustment of the moving end of the first hydraulic cylinder, the first hydraulic cylinder drives the second frame to move up and down. The third motor drives the lead screw to rotate, so that the lead screw drives the slider to slide, thereby improving the mobility of the screen cylinder.

[0012] Preferably, the drive device includes a ring gear, a gear, and a fourth motor; The toothed ring is installed on the outer wall of the screen cylinder; The gear is mounted on the output end of the fourth motor and meshes with the gear ring. The fourth motor is installed on the first frame; the fourth motor drives the gear to rotate, and the gear drives the screen cylinder to rotate through the gear ring.

[0013] Preferably, it also includes a second hydraulic cylinder and a clamping block; The second hydraulic cylinder is located on the outer wall of the first tank body; The clamping block is located on the moving end of the second hydraulic cylinder. When the screen cylinder rotates to centrifuge and dry the cat litter, the clamping block is moved by the second hydraulic cylinder to clamp and fix the first frame, thereby improving the stability of the screen cylinder during rotation and reducing the stress on the second frame.

[0014] Preferably, it also includes blades and a fifth motor; The blades are located inside the second tank. The fifth motor is installed on the outer wall of the second tank, and the output end of the fifth motor is connected to the blades. When the cat litter in the second tank circulates up and down, the rotating blades strike the cat litter, thereby breaking up the clumps in the soaked cat litter and improving the quality of the finished cat litter.

[0015] A preferred method for preparing color-changing cat litter includes the following steps: S1. Weigh a certain amount of bromothymol blue and mix it with anhydrous alcohol in the first container according to the mass ratio. Mix at room temperature to ensure that the bromothymol blue is fully dissolved in the anhydrous alcohol to form a uniform color-changing solution. S2. Select suitable ordinary cat litter, place the ordinary cat litter inside the sieve cylinder, and then move the sieve cylinder to the first tank through the support device, so that the cat litter in the sieve cylinder is immersed in the mixture in the first tank. S3. The support device drives the screen cylinder to vibrate up and down, causing the cat litter inside the screen cylinder to float up and down. At the same time, the aeration pipe aerates the mixed liquid in the first tank. After the cat litter is fully soaked and absorbed in the mixed liquid, it forms an orange gel-like substance. S4. Move the sieve cylinder upward to remove the mixture, and rotate the sieve cylinder through the support device to centrifuge and dry the cat litter soaked in the sieve cylinder. S5. After spinning, the cat litter is placed in a drying device for drying. S6. The dried cat litter is transported to the mixing device and mixed with ordinary cat litter in a certain proportion to obtain the finished color-changing cat litter.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the equipment structure is reliable and the functions are comprehensive, the process is simple and the operation is convenient. It does not require complicated equipment and harsh reaction conditions, and is suitable for large-scale industrial production. By treating cat litter with a mixed solution of bromothymol blue and anhydrous alcohol, the cat litter has a color-changing function and can change its color according to the changes in the pH of the environment. This makes it convenient for pet owners to understand the status of the cat litter and determine whether the cat litter needs to be replaced, thus improving the convenience and hygiene of pet ownership. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the isometric structure of the present invention; Figure 2 This is an isometric structural diagram of the connection between the connecting rod and the counterweight, etc. Figure 3 This is a partial isometric structural diagram of the connection between the second tank and the exhaust hood, etc. Figure 4 This is a partial isometric structural diagram of the connection between the conveyor cylinder and the spiral blades, etc. Figure 5 This is a partial isometric structural diagram of the connection between the fourth tank and the second valve, etc. Figure 6 This is a partial isometric structural diagram showing the connection between the slider and the first hydraulic cylinder, etc. Figure 7 This is an isometric structural diagram of the connection between the third tank and the fourth tank, etc. Figure 8This is a partial isometric structural diagram of the connection between the support and the top rod, etc. Figure 9 This is a partial isometric structural diagram of the connection between the sieve cylinder and the toothed ring, etc. Figure 10 This is an isometric structural diagram of the connection between the third tank and the agitator, etc.

[0018] The attached diagram shows the following markings: 101, First tank; 102, Screen cylinder; 103, Plug; 104, Connecting rod; 105, Counterweight; 201, Second tank; 202, First valve; 203, Support; 204, Top rod; 205, Conveying cylinder; 206, Spiral blade; 207, First motor; 208, Exhaust hood; 301, Third tank; 302, Discharge door; 303, Feed hopper; 304, Second motor; 305, Agitator; 401, Fourth tank. 402. Second valve; 403. Fan; 404. Conveying pipe; 501. First frame; 502. Telescopic rod; 503. Spring; 504. Vibration motor; 505. Second frame; 601. Guide seat; 602. Slider; 603. First hydraulic cylinder; 604. Lead screw; 605. Third motor; 701. Gear ring; 702. Gear; 703. Fourth motor; 801. Second hydraulic cylinder; 802. Clamping block; 901. Blade; 902. Fifth motor. Detailed Implementation

[0019] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0020] Example 1 like Figures 1 to 10 As shown, a color-changing cat litter preparation device of the present invention includes a support device, a drying device, a mixing device, a first tank 101, a sieve cylinder 102, a plug 103, a connecting rod 104, and a counterweight 105. The top of the first tank 101 is provided with an opening, and the bottom of the first tank 101 is provided with an aeration pipe. The screen cylinder 102 has openings at both the upper and lower ends. The screen cylinder 102 is rotatably mounted on the support device. The support device is used to provide power for the rotation of the screen cylinder 102 and to drive the screen cylinder 102 to vibrate and move. The plug 103 is located at the bottom opening of the sieve cylinder 102; The bottom end of the connecting rod 104 is connected to the plug body 103, and the upper part of the connecting rod 104 is slidably mounted on the screen cylinder 102. The counterweight 105 is located at the top of the connecting rod 104; The drying device is located on the side of the first tank 101 and is used to dry the cat litter. The mixing device is connected to the drying device, and the mixing device is used to mix orange glue cat litter with regular cat litter. The drying device includes a second tank 201, a first valve 202, a support 203, a top rod 204, a conveying cylinder 205, a spiral blade 206, a first motor 207, and an exhaust hood 208; The first valve 202 is connected to the bottom end of the second tank 201, and the output end of the first valve 202 is connected to the mixing device. The bracket 203 is installed on the upper part of the inner side wall of the second tank 201; Top rod 204 is installed at the top of bracket 203; The conveying cylinder 205 is installed on the inner wall of the second tank 201. The bottom end of the conveying cylinder 205 is connected to the first valve 202. The lower part of the conveying cylinder 205 is provided with multiple sets of feed inlets, and the upper part of the conveying cylinder 205 is provided with multiple sets of discharge outlets. The spiral blade 206 is rotatably installed inside the conveying cylinder 205; The first motor 207 is installed at the top of the conveyor cylinder 205, and the output end of the first motor 207 is connected to the spiral blade 206. The exhaust hood 208 is installed on the inner wall of the second tank 201 and is connected to the external hot air equipment. In this embodiment, a certain amount of bromothymol blue and anhydrous ethanol are mixed and stirred evenly in the first tank 101 according to the mass ratio. Cat litter is placed inside the perforated cylinder 102. Then, the perforated cylinder 102 is moved into the first tank 101 by a support device, so that the cat litter in the perforated cylinder 102 is immersed in the mixture in the first tank 101. At this time, the perforated cylinder 102 is vibrated up and down by the support device, so that the cat litter in the perforated cylinder 102 floats up and down. At the same time, the mixture in the first tank 101 is aerated by the aeration pipe, thereby improving the penetration effect and efficiency of the mixture on the cat litter. After the cat litter is fully soaked and absorbed in the mixture, it forms an orange gel-like substance. Then, the perforated cylinder 102 is moved upward to remove the mixture. The support device drives the sieve cylinder 102 to rotate, causing the soaked cat litter inside the sieve cylinder 102 to be centrifuged and dried. The dried cat litter is then placed in a drying device for further drying. Subsequently, the dried cat litter is conveyed to a mixing device to be mixed with ordinary cat litter in a certain proportion, thereby obtaining the color-changing cat litter product. The equipment has a reliable structure, comprehensive functions, simple process, and convenient operation. It does not require complex equipment or harsh reaction conditions, making it suitable for large-scale industrial production. By treating the cat litter with a mixed solution of bromothymol blue and anhydrous alcohol, the cat litter acquires a color-changing function, which can change color according to changes in the pH of the environment. This allows pet owners to understand the status of the cat litter in a timely manner and determine whether the cat litter needs to be replaced, improving the convenience and hygiene of pet ownership.

[0021] Example 2 Based on Example 1, the present invention provides a color-changing cat litter preparation device, wherein the mixing device includes a conveying device, a third tank 301, a discharge door 302, a feed hopper 303, a second motor 304, and a stirring paddle 305. The discharge door 302 is connected to the lower part of the third tank 301; The feed hopper 303 is connected to the upper part of the third tank 301; The second motor 304 is installed on the inner wall of the third tank 301; The stirring paddle 305 is rotatably installed inside the third tank 301, and the bottom end of the stirring paddle 305 is connected to the output end of the second motor 304. The conveying device is connected to the top of the third tank 301 and is connected to the first valve 202; The conveying device includes a fourth tank 401, a second valve 402, a blower 403, and a conveying pipe 404; The fourth tank 401 is connected to the top of the third tank 301, and the second valve 402 is connected between the fourth tank 401 and the third tank 301; The blower 403 is connected to the top of the fourth tank 401, and a filter screen is provided at the input end of the blower 403; The bottom end of the conveying pipe 404 is connected to the first valve 202, and the top end of the conveying pipe 404 is connected to the fourth tank 401. The support device includes a moving device, a driving device, a first frame 501, a telescopic rod 502, a spring 503, a vibration motor 504, and a second frame 505; The screen cylinder 102 is rotatably mounted on the first frame 501; The bottom ends of multiple sets of telescopic rods 502 are connected to the top end of the first frame 501; Multiple sets of springs 503 are fitted together on multiple sets of telescopic rods 502; The vibration motor 504 is installed on the outer wall of the first frame 501; The bottom of the second frame 505 is connected to the top of the multiple sets of telescopic rods 502. The second frame 505 is mounted on the moving device, which is used to move the second frame 505. The drive unit is installed on the first frame 501 and is used to drive the screen cylinder 102 to rotate. The moving device includes a guide seat 601, a slider 602, a first hydraulic cylinder 603, a lead screw 604, and a third motor 605; The slider 602 is slidably mounted on the guide seat 601, and the second frame 505 is slidably mounted on the slider 602. The first hydraulic cylinder 603 is mounted on the slider 602, and the moving end of the first hydraulic cylinder 603 is connected to the second frame 505. The lead screw 604 is rotatably mounted on the outer wall of the guide seat 601, and the slider 602 is screwed onto the lead screw 604. The third motor 605 is mounted on the outer wall of the guide seat 601 and connected to the lead screw 604; The drive device includes a gear ring 701, a gear 702, and a fourth motor 703; The toothed ring 701 is installed on the outer wall of the screen cylinder 102; Gear 702 is mounted on the output end of the fourth motor 703 and meshes with gear ring 701; The fourth motor 703 is installed on the first frame 501; It also includes a second hydraulic cylinder 801 and a clamping block 802; The second hydraulic cylinder 801 is installed on the outer wall of the first tank body 101; The clamping block 802 is disposed on the moving end of the second hydraulic cylinder 801; It also includes blade 901 and fifth motor 902; Blade 901 is located inside the second tank body 201; The fifth motor 902 is installed on the outer wall of the second tank 201, and the output end of the fifth motor 902 is connected to the blade 901; In this embodiment, the support device moves the sieve cylinder 102 into the second tank 201. The push rod 204 supports and pushes the plug 103, causing the plug 103 to open the opening at the bottom of the sieve cylinder 102. This allows the spun-dry cat litter inside the sieve cylinder 102 to be discharged into the second tank 201. The cat litter entering the second tank 201 flows into the conveying cylinder 205. The first motor 207 drives the spiral blades 206 to rotate, causing the spiral blades 206 to circulate the cat litter up and down within the second tank 201. Hot air is then delivered to the exhaust hood 208 via an external hot air device, allowing the exhaust hood 208 to dry the cat litter. The high-efficiency cat litter drying process involves opening the first valve 202 after the cat litter in the second tank 201 has dried, allowing it to be discharged. Then, the conveying device is activated to transport the cat litter discharged from the second tank 201 to the third tank 301. Ordinary cat litter is then fed into the third tank 301 through the feed hopper 303, thus mixing the two types of cat litter. The second motor 304 drives the stirring paddle 305 to rotate, which in turn drives the third tank 301 to rotate, ensuring that the two types of cat litter are mixed evenly. Finally, the discharge door 302 is opened to discharge the prepared color-changing cat litter.

[0022] Example 3 The present invention provides a process for preparing color-changing cat litter, comprising the following steps: S1. Weigh a certain amount of bromothymol blue and mix it with anhydrous alcohol in the first container 101 according to the mass ratio. Mix the bromothymol blue in the anhydrous alcohol at room temperature to form a uniform color-changing solution. S2. Select suitable ordinary cat litter, place the ordinary cat litter inside the sieve cylinder 102, and then move the sieve cylinder 102 to the first tank 101 through the support device, so that the cat litter in the sieve cylinder 102 is immersed in the mixture in the first tank 101. S3. The support device drives the screen cylinder 102 to vibrate up and down, causing the cat litter inside the screen cylinder 102 to float up and down. At the same time, the aeration pipe aerates the mixed liquid in the first tank 101. After the cat litter is fully soaked and absorbed in the mixed liquid, it forms an orange gel-like substance. S4. Move the sieve cylinder 102 upward out of the mixture, and drive the sieve cylinder 102 to rotate through the support device, so that the cat litter soaked in the sieve cylinder 102 is centrifuged and dried. S5. After spinning, the cat litter is placed in a drying device for drying. S6. The dried cat litter is transported to the mixing device and mixed with ordinary cat litter in a certain proportion to obtain the finished color-changing cat litter.

[0023] The main functions achieved by this invention are: 1. The equipment has a reliable structure, comprehensive functions, simple process, and convenient operation. It does not require complex equipment or harsh reaction conditions, making it suitable for large-scale industrial production. 2. By treating cat litter with a mixed solution of bromothymol blue and anhydrous alcohol, the cat litter becomes color-changing, changing its color according to changes in the pH of the environment. This allows pet owners to easily understand the condition of the cat litter and determine whether it needs to be replaced, improving the convenience and hygiene of pet care. 3. Improve the penetration effect and efficiency of the mixed solution on cat litter, break up clumps in the soaked cat litter, and improve the quality of the finished cat litter.

[0024] The first motor 207, second motor 304, fan 403, first frame 501, vibration motor 504, first hydraulic cylinder 603, third motor 605, fourth motor 703, second hydraulic cylinder 801 and fifth motor 902 of the color-changing cat litter preparation process and equipment of the present invention are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0025] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A device for preparing color-changing cat litter, characterized in that, It includes a support device, a drying device, a mixing device, a first tank (101), a sieve cylinder (102), a plug (103), a connecting rod (104), and a counterweight (105). The top of the first tank (101) is provided with an opening, and the bottom of the first tank (101) is provided with an aeration pipe; The screen cylinder (102) has openings at both the upper and lower ends. The screen cylinder (102) is rotatably mounted on the support device. The support device is used to provide power for the rotation of the screen cylinder (102) and to drive the screen cylinder (102) to vibrate and move. The plug (103) is located at the bottom opening of the sieve cylinder (102); The bottom end of the connecting rod (104) is connected to the plug body (103), and the upper part of the connecting rod (104) is slidably installed on the screen hole cylinder (102); The counterweight (105) is set at the top of the connecting rod (104); The drying device is located on the side of the first tank (101) and is used to dry the cat litter. The mixing device is connected to the drying device, and the mixing device is used to mix orange glue cat litter with regular cat litter.

2. The equipment for preparing color-changing cat litter as described in claim 1, characterized in that, The drying device includes a second tank (201), a first valve (202), a support (203), a top rod (204), a conveying cylinder (205), spiral blades (206), a first motor (207), and an exhaust hood (208). The first valve (202) is connected to the bottom end of the second tank (201), and the output end of the first valve (202) is connected to the mixing device; The bracket (203) is installed on the upper part of the inner side wall of the second tank (201); The top rod (204) is installed at the top of the bracket (203); The conveying cylinder (205) is installed on the inner wall of the second tank (201). The bottom end of the conveying cylinder (205) is connected to the first valve (202). The lower part of the conveying cylinder (205) is provided with multiple sets of feed inlets, and the upper part of the conveying cylinder (205) is provided with multiple sets of discharge outlets. The spiral blade (206) is rotatably installed inside the conveying cylinder (205); The first motor (207) is installed at the top of the conveying cylinder (205), and the output end of the first motor (207) is connected to the spiral blade (206); The exhaust hood (208) is installed on the inner wall of the second tank (201) and is connected to the external hot air equipment.

3. The equipment for preparing color-changing cat litter as described in claim 1, characterized in that, The mixing device includes a conveying device, a third tank (301), a discharge door (302), a feed hopper (303), a second motor (304), and a stirring paddle (305). The discharge door (302) is connected to the lower part of the third tank (301); The feed hopper (303) is connected to the upper part of the third tank (301); The second motor (304) is installed on the inner wall of the third tank (301); The stirring paddle (305) is rotatably installed inside the third tank (301), and the bottom end of the stirring paddle (305) is connected to the output end of the second motor (304); The conveying device is connected to the top of the third tank (301) and is connected to the first valve (202).

4. The equipment for preparing color-changing cat litter as described in claim 3, characterized in that, The conveying device includes a fourth tank (401), a second valve (402), a blower (403), and a conveying pipe (404). The fourth tank (401) is connected to the top of the third tank (301), and the second valve (402) is connected between the fourth tank (401) and the third tank (301); The blower (403) is connected to the top of the fourth tank (401), and a filter screen is provided at the input end of the blower (403); The bottom end of the conveying pipe (404) is connected to the first valve (202), and the top end of the conveying pipe (404) is connected to the fourth tank (401).

5. The equipment for preparing color-changing cat litter as described in claim 1, characterized in that, The support device includes a moving device, a driving device, a first frame (501), a telescopic rod (502), a spring (503), a vibration motor (504), and a second frame (505); The sieve cylinder (102) is rotatably mounted on the first frame (501); The bottom ends of multiple sets of telescopic rods (502) are connected to the top end of the first frame (501); Multiple sets of springs (503) are fitted together on multiple sets of telescopic rods (502); The vibration motor (504) is installed on the outer wall of the first frame (501); The bottom of the second frame (505) is connected to the top of multiple sets of telescopic rods (502). The second frame (505) is installed on the moving device, which is used to drive the second frame (505) to move. The drive unit is installed on the first frame (501) and is used to drive the screen cylinder (102) to rotate.

6. The equipment for preparing color-changing cat litter as described in claim 5, characterized in that, The moving device includes a guide seat (601), a slider (602), a first hydraulic cylinder (603), a lead screw (604), and a third motor (605). The slider (602) is slidably mounted on the guide seat (601), and the second frame (505) is slidably mounted on the slider (602); The first hydraulic cylinder (603) is mounted on the slider (602), and the moving end of the first hydraulic cylinder (603) is connected to the second frame (505); The lead screw (604) is rotatably mounted on the outer wall of the guide seat (601), and the slider (602) is screwed onto the lead screw (604); The third motor (605) is mounted on the outer wall of the guide seat (601) and connected to the lead screw (604).

7. The equipment for preparing color-changing cat litter as described in claim 5, characterized in that, The drive unit includes a gear ring (701), a gear (702), and a fourth motor (703). The toothed ring (701) is installed on the outer wall of the sieve cylinder (102); The gear (702) is mounted on the output end of the fourth motor (703) and meshes with the gear ring (701); The fourth motor (703) is mounted on the first frame (501).

8. The equipment for preparing color-changing cat litter as described in claim 1, characterized in that, It also includes a second hydraulic cylinder (801) and a clamping block (802); The second hydraulic cylinder (801) is located on the outer wall of the first tank body (101); The clamping block (802) is located on the moving end of the second hydraulic cylinder (801).

9. The equipment for preparing color-changing cat litter as described in claim 2, characterized in that, It also includes blades (901) and a fifth motor (902); The blade (901) is located inside the second tank body (201); The fifth motor (902) is installed on the outer wall of the second tank (201), and the output end of the fifth motor (902) is connected to the blade (901).

10. A process for preparing color-changing cat litter, characterized in that, Includes the following steps: S1. Weigh a certain amount of bromothymol blue and mix it with anhydrous alcohol in the first tank (101) according to the mass ratio. Mix the bromothymol blue in the anhydrous alcohol at room temperature to form a uniform color-changing solution. S2. Select a suitable ordinary cat litter, place the ordinary cat litter inside the sieve cylinder (102), and then move the sieve cylinder (102) to the first tank (101) through the support device, so that the cat litter in the sieve cylinder (102) is immersed in the mixture in the first tank (101); S3. The support device drives the screen cylinder (102) to vibrate up and down, causing the cat litter in the screen cylinder (102) to float up and down. At the same time, the aeration pipe aerates the mixed liquid in the first tank (101). After the cat litter is fully soaked and absorbed in the mixed liquid, it forms an orange gel-like substance. S4. Move the sieve cylinder (102) upward out of the mixture, and drive the sieve cylinder (102) to rotate through the support device, so that the cat litter soaked in the sieve cylinder (102) is centrifuged and dried. S5. After spinning, the cat litter is placed in a drying device for drying. S6. The dried cat litter is transported to the mixing device and mixed with ordinary cat litter in a certain proportion to obtain the finished color-changing cat litter.

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