Anti-blocking and anti-overflow method for pet toilet

Abstract

The invention relates to an anti-blocking and anti-overflow method for a pet toilet. The pet toilet comprises an excrement treatment device with a funnel; during water injection, a washing area is formed on the inner surface of the funnel through washing of water flow; a target water level sensor is installed on the outer wall or the inner wall of the funnel, and the detection end of the target water level sensor faces the washing area for detection; taking the position of the detection end of the target water level sensor as the target water injection height of the funnel; a discontinuous water injection mode is adopted in the water injection link, and the state detected by a target water level sensor at the temporary water injection stopping moment of the discontinuous water injection mode serves as the condition for judging whether the water injection link is stopped or not. Even if the pet toilet works for a long time, the target water level sensor can accurately detect the target water injection height in the funnel, and overflow is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of pet toilets, in particular to a method for preventing blocking and overflowing of pet toilets. Background Art

[0002] In order to free the hands of the pet owner and prevent the pet owner from touching the pet's feces, pet toilets on the market are generally equipped with feces treatment devices. The current feces treatment device is generally like the technical solution described in Chinese patent application number "CN2021226149751" and the name "A Pet Feces Processor". During use, when feces enter the crushing chamber through the feces inlet, the electromagnetic water valve on the water inlet is opened to inject water into the inner cavity of the shell. When the upper water level sensor detects that the water level reaches the highest water level, the electromagnetic water valve on the water inlet is closed; when the pet feces processor completes the crushing work, the discharge port discharges the mixture of feces and water. When the lower water level sensor detects that the water level reaches the lowest water level, the discharge port stops discharging. When using such a structure, water needs to be injected into the shell to soak the feces, so that after a period of use, a water stain line will be formed on the inner wall of the shell. The water stain line will affect the accuracy of the upper water level sensor detection, which causes the pet feces disposer to easily overflow after the pet toilet has been used for a period of time. The owner needs to clean the shell of the pet feces disposer after each period of use to remove the water stain line, which is very inconvenient to use. Summary of the invention

[0003] The purpose of the present invention is to provide a method for preventing blockage and overflow of a pet toilet. The method has the advantages that even if the pet toilet works for a long time, the target water level sensor can accurately detect the target water filling height in the funnel, prevent overflow, avoid waste of water resources, and is very convenient to use.

[0004] The technical solution of the present invention is implemented as follows: a method for preventing blockage and overflow of a pet toilet, in particular, including an excrement treatment device, the excrement treatment device including a funnel and a crushing mechanism connected to the bottom of the funnel, the crushing mechanism being provided with a discharge port; water is injected into the funnel toward the inner wall surface of the funnel, and the flushing of the water flow forms a flushing area on the inner wall surface of the funnel; a water level sensor is installed on the outer wall or inner wall of the funnel and the detection end of the water level sensor is directed toward the flushing area for detection, and the water level sensor is called a target water level sensor; the position of the detection end of the target water level sensor is used as the target water filling height of the funnel; water is added to the inside of the funnel in an intermittent water filling mode in the water filling link, and the state detected by the target water level sensor at the moment of temporary water filling in the intermittent water filling mode is used as the condition for judging whether to stop the water filling link: if the target water level sensor detects that the water level has not reached the target water filling height at the moment of temporary water filling, the intermittent water filling is resumed; if the target water level sensor detects that the water level has reached the target water filling height at the moment of temporary water filling, the water filling link is stopped.

[0005] This solution forms a flushing area on the inner wall surface of the funnel. The flushing area can always be kept clean under the intermittent flushing of the water flow, so that after long-term use, the water stain line in the funnel will not be formed near the detection end of the target water level sensor. In this way, the water stain line will not affect the accuracy of the target water level sensor in detecting the water level. Even if the pet toilet works for a long time, the target water level sensor can accurately detect the target water filling height in the funnel to achieve accurate control to stop water filling, prevent overflow, avoid water resource waste, and it is very convenient to use. In addition, this solution uses intermittent water injection to add water to the inside of the funnel during the water injection link, and the target water level sensor performs detection work when the water injection is temporarily stopped. In this way, the flushing of the water flow on the flushing area will not affect the accuracy of the target water level sensor detection.

[0006] Furthermore, an upper section is provided in the downstream pipeline of the discharge outlet, so that the water level in the upper section reaches a position flush with the target water filling height. In this way, since the upper section is connected to the funnel, even if the water filling has been added to the target water filling height but the water filling has not been stopped, the problem of water overflowing from the funnel will not occur. In addition, it can be considered that no electric control valve is installed on the discharge outlet or the downstream pipeline of the discharge outlet to avoid the problem of the discharge blocking and damaging the valve.

[0007] Furthermore, the position where water is injected into the funnel toward the inner wall surface of the funnel is used as the first water injection position, and a second water injection position is provided near the discharge port or on the upper section. In this way, when in use, water entering from the second water injection position also injects water into the funnel, and can disperse pet litter or feces deposited near the discharge port or in the upper section, avoiding blockage and greatly extending the maintenance cycle.

[0008] Furthermore, the first water injection location and the second water injection location are supplied with water by the same water supply pipe in a one-to-two structure, and the water flow rate of the second water injection location is greater than the water flow rate of the first water injection location. In this case, the second water injection location is the main contribution location for injecting water into the funnel.

[0009] Furthermore, the second water injection part has a larger water outlet, and the first water injection part has a smaller water outlet, so that the water flow rate of the second water injection part is greater than the water flow rate of the first water injection part.

[0010] Furthermore, another water level sensor is installed on the outer wall of the funnel and is lower than the ground height of the target water level sensor, and the detection end of the water level sensor is directed toward the inside of the funnel for detection. This water level sensor is called an alarm water level sensor; the position of the detection end of the alarm water level sensor is used as the alarm height; if the crushing and discharge link is completed and the water injection link is not started, and the alarm water level sensor detects that the water has reached the alarm height, an alarm prompt is issued to the user; if the crushing and discharge link is completed and the water injection link is not started, and the alarm water level sensor detects that the water has not reached the alarm height, no alarm prompt is issued.

[0011] Furthermore, the upward section is preferably a section of an "n"-shaped or inverted "v"-shaped pipeline where the water flows from bottom to top.

[0012] Furthermore, a conical surface is provided at the narrow opening of the funnel to guide the object to be crushed into the crushing mechanism.

[0013] Furthermore, a number of evenly distributed crushing teeth are arranged on the conical surface to improve the crushing efficiency.

[0014] The beneficial effects of the present invention include: even if the pet toilet works for a long time, the target water level sensor can accurately detect the target water filling height in the funnel, prevent overflow, avoid waste of water resources, and is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is one of the structural schematic diagrams of the excrement treatment device, the water supply pipe and the electromagnetic water valve after being connected in the embodiment.

[0016] Figure 2 This is the second structural schematic diagram of the excrement treatment device, water supply pipe and electromagnetic water valve after being connected in the embodiment.

[0017] Figure 3 It is a schematic diagram of the structure of the excrement treatment device from above (after removing the downstream pipeline) according to the embodiment.

[0018] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure in the AA direction.

[0019] Figure 5 It is a schematic diagram of the structure of the excrement treatment device after the funnel is turned over in the embodiment.

[0020] Explanation of the reference numerals: 1-excrement treatment device; 2-funnel; 21-flushing area; 22-first water injection position; 23-first water injection port; 24-flow guide; 25-conical surface; 26-crushing teeth; 3-crushing mechanism; 31-discharge port; 32-bottom shell; 33-crushing paddle; 34-crushing space; 35-dock pipe; 36-second water injection position; 37-connecting part; 4-target water level sensor; 5-downstream pipeline; 51-upper section; 6-water supply pipe; 7-electromagnetic water valve; 8-alarm water level sensor. DETAILED DESCRIPTION

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a method for preventing blockage and overflow of a pet toilet in this embodiment includes an excrement treatment device 1, which includes a funnel 2 and a crushing mechanism 3 connected to the bottom of the funnel 2, and the crushing mechanism 3 is provided with a discharge port 31; the crushing mechanism 3 includes a bottom shell 32, a crushing paddle 33 and a crushing motor; the bottom shell 32 is connected to the bottom of the funnel 2, and the bottom shell 32 is connected to the bottom surface of the funnel 2 to form a crushing space 34, and the crushing space 34 is connected to the narrow mouth of the funnel 2; the discharge port 31 is arranged on the bottom shell 32, and the discharge port 31 connects the crushing space 34 with the outside world; the crushing paddle 33 is rotatably installed in the crushing space 34, and the crushing motor is outside the crushing space 34 (the crushing motor is not shown in the accompanying drawings), and the crushing motor is used to drive the crushing paddle 33 to rotate. Water is injected into the funnel 2 toward the inner wall surface of the funnel 2, and the scouring of the water flow forms a scouring area 21 on the inner wall surface of the funnel 2; a water level sensor is installed on the outer wall of the funnel 2 and the detection end of the water level sensor is directed toward the scouring area 21 for detection. The water level sensor is called a target water level sensor 4; the position of the detection end of the target water level sensor 4 is used as the target water filling height of the funnel 2; in the water filling link, intermittent water filling is used to add water to the inside of the funnel 2, and the state detected by the target water level sensor 4 at the moment of temporary interruption of water filling in the intermittent water filling method is used as the condition for judging whether to stop the water filling link: if the target water level sensor 4 detects that the water level has not reached the target water filling height at the moment of temporary interruption of water filling, the intermittent water filling is resumed; if the target water level sensor 4 detects that the water level has reached the target water filling height at the moment of temporary interruption of water filling, the water filling link is stopped. With such a design, when in use, the flushing area 21 can always be kept clean under the intermittent flushing of the water flow, so that after a long time of use, a water stain line will be formed in the funnel 2 that is interrupted by the flushing area 21; and the detection end of the target water level sensor 4 is directed toward the flushing area 21 for detection, so that the water stain line does not affect the accuracy of the target water level sensor 4 in detecting the water level. Even if the funnel 2 works for a long time, the target water level sensor 4 can accurately detect the target water filling height in the funnel 2, so as to achieve accurate control to stop water filling, prevent overflow, avoid water resource waste, and it is very convenient to use. In addition, in the water filling link, water is added to the inside of the funnel 2 by intermittent water filling, and the target water level sensor 4 performs detection work at the moment of temporarily stopping the water filling, so that the flushing of the flushing area 21 by the water flow does not affect the accuracy of the detection of the target water level sensor 4.

[0022] In order to make the water in the funnel 2 reach the target water filling height during use, Figure 1 As shown, an upper section 51 is provided in the downstream pipeline 5 of the discharge port 31, so that the water level in the upper section 51 reaches a position flush with the target water injection height. With such a structure, it is not necessary to provide a switch valve at the discharge port 31, so as to avoid pet litter or feces blocking the switch valve, thereby increasing the service life of the excrement treatment device 1.

[0023] like Figure 1 , Figure 3 , Figure 4 As shown, the position for injecting water into the funnel 2 toward the inner wall surface of the funnel 2 is used as the first water injection position 22, and the first water injection position 22 includes a first water injection port 23 and a guide portion 24 formed on the funnel 2, and the guide portion 24 is arranged on the inner wall surface of the funnel 2, and the guide portion 24 is used to guide the water entering from the first water injection port 23 to the lower part thereof; a second water injection position 36 is also arranged near the discharge port 31, specifically, a docking pipe 35 is connected to the discharge port 31, and the second water injection position 36 includes a second water injection port arranged on the docking pipe 35 and a connecting portion 37 connected to the second water injection port. Such a design can prevent the discharge port 31 from being blocked by pet litter or feces, thereby achieving the purpose of preventing blockage.

[0024] In order to make the water injection pipeline simpler, Figure 1 , Figure 2 As shown, the first water injection position 22 and the second water injection position 36 are supplied with water by the same water supply pipe 6 in a one-to-two pipe structure, and the water flow rate of the second water injection position 36 is greater than the water flow rate of the first water injection position 22, so that the water entering from the second water injection position 36 has a greater impact force to disperse the pet litter and feces deposited near the discharge port 31. When in use, the water inlet end of the water supply pipe 6 is connected to the water outlet end of the electromagnetic water valve 7 on the pet toilet, and the electromagnetic water valve 7, the target water level sensor 4, and the crushing motor are all electrically connected to the main control module of the pet toilet (the main control module is not shown in the accompanying drawings). The main control module can control the electromagnetic water valve 7 for intermittent water injection; the target water level sensor 4 will transmit the detected signal to the main control module. When the main control module receives the signal from the target water level sensor 4 that the water level has reached the target water injection height, the main control module will control the electromagnetic water valve 7 to stop the water injection link. After that, the main control module also controls the crushing motor to start, so that the crushing paddle 33 rotates to crush the feces in the crushing space 34 and push it toward the discharge outlet 31.

[0025] The second water injection part 36 of the anti-blocking and anti-overflow method of the pet toilet has a larger water outlet, and the first water injection part 22 has a smaller water outlet, so that the water flow rate of the second water injection part 36 is greater than the water flow rate of the first water injection part 22.

[0026] In order to further optimize the anti-blocking and anti-overflow method of the pet toilet, Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, another water level sensor is installed on the outer wall of the funnel 2 and is lower than the ground height of the target water level sensor 4, and the detection end of the water level sensor is directed toward the inside of the funnel 2 for detection. The water level sensor is called the alarm water level sensor 8; the position of the detection end of the alarm water level sensor 8 is used as the alarm height; if the crushing and discharge link is completed and the water injection link is not started, and the alarm water level sensor 8 detects that the water has reached the alarm height, an alarm prompt is issued to the user; if the crushing and discharge link is completed and the water injection link is not started, and the alarm water level sensor 8 detects that the water has not reached the alarm height, no alarm prompt is issued. When in use, the alarm water level sensor 8 is also electrically connected to the main control module of the pet toilet. When the main control module receives the signal sent by the alarm water level sensor 8 that the water has reached the alarm height, the main control module will issue a warning prompt, which can be a sound or flashing text, so that the user can promptly inspect and maintain the excrement treatment device 1.

[0027] In order to make the crushing efficiency of the excrement treatment device 1 higher, Figure 2 , Figure 3 , Figure 4 As shown, a conical surface 25 is provided at the narrow opening of the funnel 2 to guide the object to be crushed into the crushing mechanism 3. The conical surface 25 is a structure with a small upper opening and a large lower opening. The upper opening of the conical surface 25 is the narrow opening of the funnel 2, and the lower opening of the conical surface 25 is connected to the crushing space 34. The object to be crushed refers to the feces mass formed by pet feces and pet litter. With this design, when working, the rotation of the crushing paddle 33 will not throw out the mixture of water, pet litter and feces, making the anti-blocking and anti-overflow method of the pet toilet cleaner and more sanitary when in use.

[0028] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a number of evenly distributed crushing teeth 26 are provided on the conical surface 25 to improve the crushing efficiency.

Claims

1. A method for preventing blockage and overflow of a pet toilet, characterized in that: The invention comprises an excrement treatment device, which comprises a funnel and a crushing mechanism connected to the bottom of the funnel, wherein the crushing mechanism is provided with a discharge port; water is injected into the funnel toward the inner wall surface of the funnel, and the flushing of the water flow forms a flushing area on the inner wall surface of the funnel; a water level sensor is installed on the outer wall or the inner wall of the funnel and the detection end of the water level sensor is directed toward the flushing area for detection, and the water level sensor is called a target water level sensor; the position of the detection end of the target water level sensor is used as the target water filling height of the funnel; water is added to the funnel in an intermittent water filling mode in the water filling link, and the state detected by the target water level sensor at the moment of temporary water filling of the intermittent water filling mode is used as the condition for judging whether to stop the water filling link: if the target water level sensor detects that the water level does not reach the target water filling height at the moment of temporary water filling, the intermittent water filling is resumed; if the target water level sensor detects that the water level has reached the target water filling height at the moment of temporary water filling, the water filling link is stopped.

2. The method for preventing blockage and overflow of a pet toilet according to claim 1, characterized in that: An upward section is set in the downstream pipeline of the discharge outlet so that the water level in the upward section reaches a position flush with the target water injection height.

3. The method for preventing blockage and overflow of a pet toilet according to claim 1, characterized in that: The position where water is poured into the funnel toward the inner wall surface of the funnel is defined as a first water pouring location, and a second water pouring location is provided near the discharge port.

4. The method for preventing blockage and overflow of a pet toilet according to claim 2, characterized in that: The position where water is injected into the funnel toward the inner wall surface of the funnel is used as the first water injection position, and a second water injection position is also set in the upper section.

5. A method for preventing blockage and overflow of a pet toilet according to claim 3 or 4, characterized in that: The first water injection location and the second water injection location are supplied with water by the same water supply pipe in a one-to-two pipe structure, and the water flow rate of the second water injection location is greater than the water flow rate of the first water injection location.

6. The method for preventing blockage and overflow of a pet toilet according to claim 5, characterized in that: The second water injection part has a larger water outlet, and the first water injection part has a smaller water outlet, so that the water flow rate of the second water injection part is greater than the water flow rate of the first water injection part.

7. The method for preventing blockage and overflow of a pet toilet according to claim 1, characterized in that: Another water level sensor is installed on the outer wall of the funnel at a height lower than the ground height of the target water level sensor, and the detection end of the water level sensor is directed toward the inside of the funnel for detection. This water level sensor is called an alarm water level sensor; the position of the detection end of the alarm water level sensor is used as the alarm height; if the crushing and discharge link is completed and the water injection link is not started, and the alarm water level sensor detects that the water has reached the alarm height, an alarm prompt is issued to the user; if the crushing and discharge link is completed and the water injection link is not started, and the alarm water level sensor detects that the water has not reached the alarm height, no alarm prompt is issued.

8. The method for preventing blockage and overflow of a pet toilet according to claim 2, characterized in that: The upward section is a section of the "n"-shaped or inverted "v"-shaped pipeline where the water flows from bottom to top.

9. The method for preventing blockage and overflow of a pet toilet according to claim 1, characterized in that: A conical surface is arranged at the narrow opening of the funnel to guide the objects to be crushed into the crushing mechanism.

10. The method for preventing blockage and overflow of a pet toilet according to claim 9, characterized in that: Several evenly distributed crushing teeth are set on the conical surface to improve the crushing efficiency.

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