Cat litter deodorizing device

Abstract

The application discloses a cat litter deodorization device, and belongs to the technical field of pet products. The cat litter deodorization device solves the problem of poor deodorization effect of a cat litter, and the technical solution for solving the problem mainly comprises a shell, a garbage bin, and an inner cylinder rotatably arranged in the shell. The inner cylinder is provided with a screening part for screening cat litter and a sand leakage opening for allowing clumps to be separated from the inner cylinder. The garbage bin is arranged at the lower part of the inner cylinder. An exhaust opening and an entrance for pets to enter and exit are arranged on the shell. The inner cylinder has a first position where the sand leakage opening is in communication with the entrance and a second position where the sand leakage opening is in communication with the garbage bin. The shell is provided with a fan assembly, a first air duct in communication with the entrance and the garbage bin, and a second air duct in communication with the exhaust opening and the garbage bin. The second air duct is provided with a deodorization part. The fan assembly works to make the airflow at the entrance pass through the garbage bin and the deodorization part and then be discharged from the exhaust opening. The application is mainly used for effectively improving the deodorization effect.

Description

Technical Field

[0001] This invention relates to the field of pet supplies technology, and in particular to a cat toilet deodorization device. Background Technology

[0002] With the pet market expanding and the number of cat owners increasing dramatically, automatic litter boxes have emerged, bringing convenience to pet owners. Specifically, these boxes include a roller and a screening component inside. The roller has an entrance for the cat and a discharge port for waste. As the roller rotates, gravity forces the waste out through the screening component and guides it to the discharge port, where it is discharged into a waste bin. However, because litter boxes are semi-enclosed spaces, and the smell of cat urine and feces is extremely strong, odor control has become a major concern for customers.

[0003] To address this, existing technologies, such as the utility model patent CN211064559U, disclose a pet cat litter box. This litter box includes a sand-sieving component, a base, and a deodorizing and sterilizing component. The sand-sieving component is configured to sift excrement from the cat litter; the base has a receiving groove configured to receive the excrement; and the deodorizing and sterilizing component is detachably mounted on the base and configured to deodorize and sterilize the excrement in the receiving groove. However, the deodorizing and sterilizing component of this device cannot deodorize the sand-sieving component, allowing odors from the sand-sieving component to easily escape from the litter box entrance, negatively impacting the user experience.

[0004] Furthermore, utility model patent CN213784703U discloses a ventilation mechanism for a cat litter box, including a base with a waste box for collecting cat excrement inside. A fan is installed on the inner wall of the base away from the cat litter box inlet. An exhaust duct is located on the base below the fan, with one end connected to the fan's outlet and the other end open to the atmosphere. The base has multiple first air inlets near the cat litter box inlet, which are open to the atmosphere. The airflow generated by the fan expels odors from inside the cat litter box to the outside, achieving a good deodorizing effect. However, odors inside the cat litter box can still be expelled through the inlet, affecting the user experience. Summary of the Invention

[0005] The purpose of this invention is to provide a cat toilet deodorization device that solves the problem of poor deodorization effect in cat toilets and effectively improves the deodorization effect.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a cat litter deodorizing device, comprising an outer shell, a litter bin, and an inner cylinder rotatably disposed within the outer shell. The inner cylinder has a sieving component for sieving cat litter and a litter outlet for clogging and removing litter from the inner cylinder. The litter bin is disposed at the lower part of the inner cylinder. The outer shell is provided with an exhaust port and an entrance for pets to enter and exit. The inner cylinder has a first position where the litter outlet communicates with the entrance and a second position where the litter outlet communicates with the litter bin. The outer shell is provided with a fan assembly, a first air duct communicating with the entrance and the litter bin, and a second air duct communicating with the exhaust port and the litter bin. The second air duct is provided with a deodorizing component. The fan assembly operates so that the airflow at the entrance passes through the litter bin and the deodorizing component and is discharged from the exhaust port.

[0007] After adopting the above technical solution, the present invention has the following advantages: By setting a fan assembly, a first air duct connecting the inlet and the garbage bin, and a second air duct connecting the exhaust port and the garbage bin, the fan assembly works so that the odor at the inlet enters the first air duct instead of leaking directly out of the inlet. The odor entering the first air duct then passes through the garbage bin and the second air duct. The deodorizing component in the second air duct purifies and deodorizes the odor, so that clean air is output from the exhaust port. When the fan assembly is working, the odor in the garbage bin can also be drawn in by the fan assembly and purified by the deodorizing component, thereby further reducing odor leakage. In addition, the inner cylinder is only provided with one sand leakage port. When the inner cylinder is in the first position, the sand leakage port is connected to the inlet, and the cat and cat litter can enter the inner cylinder in sequence through the inlet and the sand leakage port. When the inner cylinder is in the second position, the sand leakage port is connected to the garbage bin to allow clumps to detach from the inner cylinder. The sand leakage port achieves multiple functions, can also reduce the number of openings on the inner cylinder, reduce the path of odor leakage from the inner cylinder, and also help prevent the cat from accidentally entering other openings, thus improving the safety of the cat.

[0008] Furthermore, the deodorizing component is located upstream of the fan assembly.

[0009] With the aforementioned technical solution, the deodorizing component is located upstream of the fan assembly, so that the odorous air drawn in by the fan assembly needs to be deodorized by the deodorizing component first, and the odorous air is purified into clean air before contacting the fan assembly. This effectively avoids odor residue on the fan assembly, thereby making the air output by the fan assembly cleaner.

[0010] Furthermore, the deodorizing component is located downstream of the fan assembly.

[0011] With the aforementioned technical solution, the deodorizing component is located downstream of the fan assembly, and the fan has a large air intake volume, which helps to shorten the deodorizing time and thus improve the deodorizing efficiency.

[0012] Furthermore, the first air duct is equipped with a deodorizing component.

[0013] By adopting the above technical solution, the odorous air drawn in by the fan assembly from the inlet is purified for the first time when passing through the first air duct, and then purified a second time when passing through the second air duct, effectively improving the deodorization effect.

[0014] Furthermore, the deodorizing component includes a catalyst composed of one or more of oxides, silicon dioxide, aluminum oxide, and carbon.

[0015] Using the above technical solution, the catalyst mainly acts as a catalyst, enabling odorous gases to decompose into odorless gases such as water and carbon dioxide when they pass through the catalyst. The catalyst itself is not consumed, and users do not need to replace the catalyst during long-term use, making it more convenient to use.

[0016] Furthermore, the outer casing is also equipped with a controller electrically connected to the fan assembly, and the inner cylinder is equipped with a gravity sensor that detects the pet entering or leaving the inner cylinder and transmits the information to the controller via an electrical signal.

[0017] By adopting the above technical solution, the weight of the inner tube is obtained by setting a gravity sensor. As the pet enters and exits the inner tube, the weight of the inner tube will change. After the pet finishes using the toilet and leaves the inner tube, the fan component will automatically turn on to deodorize. No manual operation is required, which is convenient to use. The weight of the cat litter can also be obtained by the change of the weight of the inner tube, so that the cat litter can be replaced when it is low.

[0018] Furthermore, the outer casing is also equipped with a controller electrically connected to the fan assembly, and the inner cylinder is equipped with an infrared sensor that detects the status of the pet inside the inner cylinder and transmits the information to the controller via an electrical signal.

[0019] By adopting the above technical solution, an infrared sensor is set up to detect whether there is a pet in the inner cylinder. After the pet finishes using the toilet and leaves the inner cylinder, the fan assembly automatically turns on to deodorize, which does not require manual operation by the user and is more convenient to use.

[0020] Furthermore, the housing is also equipped with a controller electrically connected to the fan assembly, and the housing contains an odor sensor that acquires odor and transmits it to the controller via an electrical signal.

[0021] By adopting the above technical solution, an odor sensor can be set up to automatically detect odors, thereby controlling the fan assembly to automatically turn on for deodorization. The controller can also adjust the fan speed according to the intensity of the odor detected by the odor sensor.

[0022] Furthermore, the housing also includes a controller electrically connected to the fan assembly, the controller including a timer switch; and / or, the housing also includes a controller electrically connected to the fan assembly, the housing also including an operation switch that facilitates manual operation by the user, the operation switch being electrically connected to the controller; and / or, the housing also includes a controller electrically connected to the fan assembly, the controller including a wireless switch.

[0023] By adopting the above technical solutions, the fan assembly can be activated at set times to deodorize, preventing users from forgetting to deodorize; and / or, by setting an operation switch, users can manually turn on the fan assembly to deodorize, thus enabling more timely deodorization; and / or, by setting a wireless switch, users can remotely control the fan assembly to turn on deodorization, facilitating remote use and realizing the intelligentization of pet products.

[0024] Furthermore, the housing is also provided with a controller electrically connected to the fan assembly, and the housing is provided with a drive mechanism for driving the inner cylinder to rotate. The drive mechanism is electrically connected to the controller, and the fan assembly operates simultaneously with the drive mechanism.

[0025] Using the above technical solution, since the clumps move and easily generate a strong odor during the rotation of the inner drum, the fan assembly can automatically deodorize during the scooping process, reducing odor leakage. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of a cat toilet deodorization device according to Embodiment 1 of the present invention;

[0028] Figure 2 This is an exploded view of the cat toilet deodorization device in Embodiment 1 of the present invention;

[0029] Figure 3 This is a cross-sectional view of the cat toilet deodorizing device in Embodiment 1 of the present invention when the inner cylinder is in the first position;

[0030] Figure 4 In Embodiment 1 of the present invention Figure 3 Enlarged view of the structure at point A;

[0031] Figure 5 This is a cross-sectional view of the cat toilet deodorizing device in Embodiment 1 of the present invention when the inner cylinder is in the second position;

[0032] Figure 6 This is a schematic diagram of a deodorizing component installed at the second air duct in Embodiment 1 of the present invention;

[0033] Figure 7 This is a cross-sectional view of the cat toilet deodorizing device in Embodiment 2 of the present invention when the inner cylinder is in the first position;

[0034] Figure 8 In Embodiment 2 of the present invention Figure 7 Enlarged view of the structure at point B;

[0035] Figure 9This is a cross-sectional view of the cat toilet deodorizing device in Embodiment 3 of the present invention when the inner cylinder is in the first position;

[0036] Figure 10 In Embodiment 3 of the present invention Figure 9 Enlarged view of the structure at point C;

[0037] Figure 11 This is a cross-sectional view of the cat toilet deodorization device in Embodiment 4 of the present invention;

[0038] In the diagram, 10 is the outer casing; 11 is the entrance; 12 is the electric door; 13 is the step; 14 is the first air duct; 15 is the exhaust port; 16 is the second air duct; 17 is the air guide; 18 is the receiving cavity; 20 is the inner cylinder; 21 is the sand outlet; 22 is the baffle; 23 is the screen; 24 is the litter box; 30 is the bracket; 31 is the through hole; 40 is the garbage bin; 50 is the drive motor; 60 is the deodorizing component; 61 is the catalyst; 62 is the filter; and 70 is the turbine fan. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0040] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0041] It should be understood that in the various embodiments of the present invention, the number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0042] It should be understood that in this invention, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0043] It should be understood that in this invention, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, or Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Contains X, Y, and Z", "Contains X, Y, and Z" means that all three X, Y, and Z are contained; "Contains X, Y, or Z" means that one of X, Y, and Z is contained; "Contains X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are contained.

[0044] The technical solution of the present invention will be described in detail below with reference to specific embodiments. The following specific embodiments may be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0045] Example 1:

[0046] like Figures 1 to 7 As shown, the present invention provides a cat litter deodorizing device, including a shell 10, an inner cylinder 20, a support 30, a litter bin 40, and a fan assembly disposed within the shell 10. The inner cylinder 20 is rotatably disposed within the shell 10 via the support 30. The litter bin 40 is disposed at the lower part of the inner cylinder 20. The shell 10 is provided with an exhaust port 15 and an inlet 11 for pets to enter and exit. The support 30 is provided with a through hole 31 communicating with the litter bin 40. The inner cylinder 20 is provided with a sieving component for sieving cat litter and a litter outlet 21 for clogging to escape from the inner cylinder 20. The sieving component includes a baffle 22 and a screen 23. One end of the baffle 22 is close to the litter outlet 21, and the other end of the baffle 22 is connected to the screen 23. The screen 23 is provided with a plurality of screen holes. The width of the screen holes is greater than the diameter of the cat litter and smaller than the diameter of the clogging. A litter bin 24 for placing cat litter is formed between the baffle 22 and the inner wall of the inner cylinder 20.

[0047] To achieve automatic poop scooping, the bracket 30 is equipped with a drive mechanism. The output end of the drive mechanism is connected to the inner cylinder 20, thereby driving the inner cylinder 20 to rotate, so that the inner cylinder 20 has a first position where the sand leakage port 21 communicates with the inlet 11 and a second position where the sand leakage port 21 communicates with the through hole 31. Figure 3 As shown, when the inner cylinder 20 is in the first position, the litter outlet 21 is connected to the inlet 11, and both cat litter and cat sand can enter the inner cylinder 20 after passing through the inlet 11 and the litter outlet 21 in sequence. During the rotation of the inner cylinder 20 from the first position to the second position, cat litter enters the litter bin 24 through the sieve holes, while clumps cannot pass through the sieve holes and remain on the baffle 22 and the inner wall of the inner cylinder 20 until the inner cylinder 20 rotates to the second position. Figure 5As shown, the sand outlet 21 is connected to the through hole 31. At this time, the sand outlet 21 is at its lowest position, and the clumps fall from the sand outlet 21 into the garbage bin 40, realizing the collection of clumps. This enables the sand outlet 21 to perform multiple functions, eliminating the need for a separate opening for the cat and cat litter to enter the inner cylinder 20. This reduces the number of openings on the inner cylinder 20, which helps to reduce the path of odor leakage from the inner cylinder 20 and also prevents the cat from accidentally entering other openings, thus improving the cat's safety.

[0048] It should be noted that the drive mechanism includes a drive motor 50, which can directly drive the inner cylinder 20 to rotate.

[0049] To prevent the odor from cat feces and urine from escaping from the inlet 11 and affecting the user experience, the outer casing 10 in this embodiment is equipped with a fan assembly, a first air duct 14 connecting the inlet 11 and the garbage bin 40, and a second air duct 16 connecting the exhaust port 15 and the garbage bin 40. The second air duct 16 is equipped with a deodorizing component 60. The odor at the inlet 11 is drawn into the first air duct 14 by the fan assembly, instead of leaking directly out of the inlet 11. The odor entering the first air duct 14 continues to pass through the garbage bin 40 and the second air duct 16 under the suction of the fan. The deodorizing component 60 can purify and deodorize the odor, and finally output clean air from the exhaust port 15, improving the freshness of the air.

[0050] It should be noted that when the fan assembly is working, the odor in the garbage bin 40 is also drawn in by the fan assembly and purified by the deodorizing component 60, thereby further reducing odor leakage.

[0051] To prevent odors from remaining on the fan assembly, the deodorizing component 60 is located upstream of the fan assembly. This ensures that the odorous air drawn in by the fan assembly is deodorized by the deodorizing component 60 before contacting the fan assembly, effectively preventing odors from remaining on the fan assembly and thus making the air output by the fan assembly cleaner.

[0052] Existing technologies typically employ photocatalyst 61 spray, deodorizers (sugarcane polyphenols, persimmon tannin), and purification liquid (plant extracts) for deodorization. However, these components are consumables, requiring frequent refills by the user, which is inconvenient. Therefore, in this embodiment, the deodorizing component 60 includes a catalyst 61 composed of oxides, silicon dioxide, aluminum oxide, and carbon. The catalyst 61 primarily acts as a catalyst; odorous gases are decomposed into odorless gases such as water and carbon dioxide upon passing through it. The catalyst 61 itself is not consumed, eliminating the need for user replacement during long-term use, thus making it more convenient.

[0053] To make the fan assembly more compact, the fan assembly includes a turbine fan 70, which has the advantages of small size and large air volume, which helps to reduce the space occupied inside the cat litter deodorization device.

[0054] During the suction process of the fan assembly, larger solid particles are drawn in along with the odor. Since the deodorization efficiency of the catalyst 61 is related to the odor contact area, this embodiment also includes a filter 62 in the deodorization component 60. The filter 62 is positioned upstream of the turbine fan 70 and the catalyst 61. The filter 62 effectively intercepts larger solid particles, preventing them from adsorbing onto the catalyst 61, thus ensuring the contact area between the catalyst 61 and the odor and further guaranteeing deodorization efficiency. It also prevents larger solid particles from contacting the high-speed rotating turbine fan 70, ensuring the lifespan of the turbine fan 70. The filter 62 can be stacked with the catalyst 61 for a more compact structure, reducing space occupation.

[0055] In order to make the airflow path inside the cat toilet deodorization device more reasonable, the turbine fan 70 is equipped with a guide shroud 17. The inlet of the guide shroud 17 is connected to the garbage bin 40, and the outlet of the guide shroud 17 is connected to the exhaust port 15. The guide shroud 17 forms a second air duct 16.

[0056] Since the height of the sand drain 21 in the same litter box is fixed, but cats vary in size, this embodiment provides a step 13 at the entrance 11 to facilitate the entry and exit of smaller cats. The step 13 allows the cat to enter the inner cylinder 20, avoiding the problem of the sand drain 21 being too high and difficult for the cat to enter. The step 13 is hollow inside, with openings at both its upper and lower ends. The upper end of the step 13 connects to the entrance 11, and the lower end connects to the waste bin 40, forming a first air duct 14.

[0057] To further improve the treatment effect of odor at inlet 11, the bracket 30 located at inlet 11 can also be made with an opening and connected to the inside of step 13 to increase the range of odor drawn in by the fan at inlet 11.

[0058] Since cat feces and urine are easily absorbed onto the inner cylinder 20 and continuously emit odor, in this embodiment, an anti-fouling coating can also be provided on the surface of the inner cylinder 20 to increase the difficulty of cat feces and urine being absorbed onto the inner cylinder 20, thereby reducing the generation of odor.

[0059] To further facilitate use, in this embodiment, the outer casing 10 is also equipped with a controller electrically connected to the fan assembly, and the inner cylinder 20 is equipped with a gravity sensor that detects the cat entering and exiting the inner cylinder 20 and transmits the information to the controller via an electrical signal. When the cat enters the inner cylinder 20, the gravity sensor detects an increase in the weight of the inner cylinder 20. The controller compares the detected data with a set value. If the weight is greater than the set value, the fan assembly will not start. When the cat leaves the inner cylinder 20, the gravity sensor detects a decrease in the weight of the inner cylinder 20. The controller compares the detected data with a set value. If the weight is less than the set value, it is determined that the cat has left the inner cylinder 20, and the fan assembly starts to deodorize. This eliminates the need for manual operation by the user, making it more convenient to use. At this time, the drive motor 50 can also be started according to the controller's determination, driving the inner cylinder 20 to rotate and sift cat litter and clumps. Of course, the change in the weight of the cat litter can also be obtained by comparing the data detected by the gravity sensor with the set value, so that cat litter can be replenished or replaced when it is insufficient.

[0060] It should be noted that a display screen can be installed on the outer casing 10 to show the working status of the cat litter deodorizing device and the weight of the cat litter, so that users can intuitively obtain information about the cat litter deodorizing device and the cat litter, and users can replenish or replace the cat litter in a timely manner.

[0061] Since cats require a quiet environment when using the litter box, an electric door 12 can be installed at the entrance 11 in this embodiment to prevent the cat from re-entering the litter box while the fan assembly is running. When the fan assembly is running, the electric door 12 is closed to prevent the cat from entering the litter box and being startled. The closed electric door 12 also reduces odor emissions from the entrance 11. After deodorization is complete, the electric door 12 is opened, allowing the cat to enter and exit the litter box.

[0062] To facilitate users in cleaning up the garbage that enters the garbage bin 40, the outer shell 10 is provided with a receiving cavity 18 for the garbage bin 40 to be accommodated. The garbage bin 40 is installed in the receiving cavity 18 by a pull-out method. Users can empty the garbage bin 40, thereby reducing the odor generated by the garbage bin 40.

[0063] It is understood that in other embodiments of the present invention, the catalyst may also include only one of oxides, silicon dioxide, aluminum oxide, and carbon, or a mixture of two or three of them in equal quantities.

[0064] It is understood that in other embodiments of the present invention, a fan assembly may also be provided in the first air duct, thereby bringing the fan assembly closer to the inlet, enhancing the suction effect of odor at the inlet, and reducing the leakage of odor from the inlet.

[0065] Understandably, in other embodiments of the present invention, openings communicating with the first channel are provided around the entrance to more comprehensively draw in odorous gases from the entrance.

[0066] Understandably, in other embodiments of the present invention, the inner cylinder is equipped with an infrared sensor that detects the presence of a cat inside the inner cylinder and transmits an electrical signal to the controller. By setting the infrared sensor to detect whether there is a cat inside the inner cylinder, the fan assembly is automatically turned on to deodorize after the cat finishes using the litter box and leaves the inner cylinder, eliminating the need for manual operation and making it more convenient to use.

[0067] Understandably, in other embodiments of the present invention, an odor sensor is provided inside the housing to acquire odor and transmit it to the controller via an electrical signal. This sensor can automatically acquire odor and thus control the fan assembly to automatically turn on for deodorization. The fan assembly can also automatically adjust its airflow speed according to the intensity of the odor.

[0068] Understandably, in other embodiments of the present invention, the housing is also provided with a timer switch electrically connected to the fan assembly, which can deodorize at regular intervals to prevent people from forgetting to deodorize.

[0069] Understandably, in other embodiments of the present invention, the outer casing is also provided with an operation switch that is convenient for manual operation by the user. The operation switch is electrically connected to the controller, and the user can manually turn on the deodorization, thereby enabling deodorization to be performed more promptly.

[0070] Understandably, in other embodiments of the present invention, the housing is also provided with a wireless switch connected to the controller, allowing users to remotely control the fan assembly to deodorize via mobile phone or computer, thus realizing the intelligentization of cat products.

[0071] Understandably, in other embodiments of the present invention, since the clumps move during the rotation of the inner cylinder and are prone to generating a strong odor, the drive motor is electrically connected to the controller, and the fan assembly can automatically start to deodorize during the rotation of the inner cylinder to scoop up manure.

[0072] It is understood that in other embodiments of the present invention, the drive mechanism may include not only a drive motor, but also an intermediate transmission structure such as a gear set, with the output shaft of the drive motor connected to the inner cylinder through the intermediate transmission structure to make the rotation of the inner cylinder smoother.

[0073] It should be noted that clumps mainly consist of lumps formed from a mixture of feces, urine, and cat litter.

[0074] It should be noted that the cat litter box deodorizing device can also be used for pets such as hamsters and dogs.

[0075] Example 2:

[0076] like Figure 7 and Figure 8As shown, in this embodiment, the deodorizing component 60 is located downstream of the fan assembly. The air intake side of the fan is not blocked, the air intake volume of the fan is large, the deodorization efficiency is higher, and it is beneficial to shorten the deodorization time.

[0077] Other content not described in this embodiment can be found in Embodiment 1.

[0078] Example 3:

[0079] like Figure 9 and Figure 10 As shown, in this embodiment, a deodorizing component 60 is provided in the first air duct 14. This allows the odorous air drawn in by the fan assembly from the inlet 11 to undergo a first purification when passing through the first air duct 14, and a second purification when passing through the second air duct 16, effectively improving the deodorizing effect.

[0080] The steps 13 can also form a space for installing the deodorizing component 60, solving the problem of limited space at the entrance 11 making it difficult to install the deodorizing component 60, thus facilitating the installation of the deodorizing component 60.

[0081] Other content not described in this embodiment can be referred to in the above embodiments.

[0082] Example 4:

[0083] like Figure 11 As shown, in this embodiment, the outer casing 10 may also be provided with multiple exhaust ports 15, and correspondingly, multiple second air ducts 16 are provided. The second air ducts 16 are provided with multiple fan assemblies and multiple deodorizing components 60. The multiple fan assemblies and multiple deodorizing components 60 can deodorize simultaneously to improve the deodorization effect.

[0084] Understandably, it's also possible to simply set up a second air duct connecting multiple exhaust ports and waste bins, resulting in a simpler structure.

[0085] Other content not described in this embodiment can be referred to in the above embodiments.

[0086] In addition to the preferred embodiments described above, the present invention has other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection claimed by the present invention.

Claims

1. A cat litter box deodorizing device, comprising a shell, a litter bin, and an inner cylinder rotatably disposed within the shell, the inner cylinder having a sieving component for sieving cat litter and a litter outlet for allowing clumps to escape from the inner cylinder, the litter bin being disposed at the lower part of the inner cylinder, and the shell having an exhaust port and an entrance for pets to enter and exit, characterized in that, The inner cylinder has a first position where it rotates to connect with the sand drain and the inlet, and a second position where it connects with the garbage bin. The outer shell has a first air duct connecting the inlet and the garbage bin, and a second air duct connecting the exhaust port and the garbage bin. Both the first and second air ducts are equipped with deodorizing components and fan assemblies. The fan assembly operates so that the airflow at the inlet passes through the garbage bin and the second air duct and is discharged from the exhaust port. The inlet is equipped with an electric door. When the fan assembly is running, the electric door is in a closed state. When deodorization is completed, the electric door is in an open state. The inlet has a step that facilitates the entry and exit of cats. The step is hollow inside. The hollow structure inside the step forms a space for the installation of the deodorizing components and fan assembly of the first air duct. Both the upper and lower ends of the step are provided with openings. The upper end of the step connects to the inlet, and the lower end of the step connects to the garbage bin. The step forms the first air duct. The outer shell is also equipped with a controller electrically connected to the fan assembly. The outer shell is equipped with a drive mechanism for driving the inner cylinder to rotate. The drive mechanism is electrically connected to the controller. The fan assembly operates simultaneously with the drive mechanism.

2. The deodorizing device for cat litter boxes according to claim 1, characterized in that, The deodorizing component of the second air duct is located upstream of the fan assembly within the second air duct.

3. The deodorizing device for cat litter boxes according to claim 1, characterized in that, The deodorizing component of the second air duct is located downstream of the fan assembly within the second air duct.

4. The deodorizing device for cat litter boxes according to claim 1, characterized in that, The deodorizing components in the first and second air ducts are both catalysts composed of one or more of silicon dioxide, aluminum oxide, and carbon.

5. The deodorizing device for cat litter boxes according to claim 1, characterized in that, The inner cylinder is equipped with a gravity sensor that detects whether a pet enters or exits the inner cylinder and transmits the information to the controller via an electrical signal.

6. The deodorizing device for cat litter boxes according to claim 1, characterized in that, The inner cylinder is equipped with an infrared sensor that detects the pet inside the inner cylinder and transmits the information to the controller via an electrical signal.

7. The cat litter box deodorizing device according to claim 1, characterized in that, The housing contains an odor sensor that acquires odor and transmits it to the controller via an electrical signal.

8. The deodorizing device for cat litter boxes according to claim 1, characterized in that, The controller includes a timer switch; and / or, the housing is further provided with an operation switch that facilitates manual operation by the user, the operation switch being electrically connected to the controller; and / or, the controller includes a wireless switch.

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