Sewage suction machine and method for detecting blockage degree of filter in sewage suction machine

Abstract

The sewage suction machine comprises a shell, a filter, a water suction pump, a controller and a sensor, the filter, the water suction pump, the controller and the sensor are arranged in the shell, a sewage suction opening and a water outlet are formed in the shell, a water flow channel communicated with the sewage suction opening and the water outlet is formed in the shell, the filter is arranged in the water flow channel, and the water suction pump is arranged in the water flow channel. The water suction pump is at least partially arranged in the water flow channel; wherein the controller is respectively connected with the water suction pump and the sensor, and the sensor comprises a sound sensor and / or a vibration sensor. Correspondingly, the invention further discloses a method for detecting the blockage degree of the filter in the sewage suction machine, the method is implemented based on the sewage suction machine, the sound volume information and / or vibration information of the sewage suction machine in the working period can be collected, and the blockage information of the filter is correspondingly obtained.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection equipment, and in particular to a sewage suction machine and a method for detecting the blockage degree of a filter in the sewage suction machine. Background Art

[0002] As we all know, swimming pools are the main places for people to swim, and some garbage or bacteria will appear in swimming pools during use, so swimming pools need to be cleaned regularly. Among them, underwater cleaning equipment is currently commonly used to clean swimming pools, such as a handheld vacuum cleaner, which can perform dynamic cleaning in water under the control of staff.

[0003] However, when the above-mentioned underwater cleaning equipment is actually applied, the filter screen of the filter of the sewage suction machine will absorb a lot of dust after working for a long time. Once it is not cleaned for a long time, the filter screen will be blocked, resulting in reduced water pumping efficiency, thereby reducing the cleaning ability. The user cannot check the garbage bin situation at all times during the cleaning process. Therefore, it is urgent to detect the degree of filter blockage of underwater cleaning equipment such as sewage suction machines to realize filter blockage alarm, thereby prompting the user to clean the filter, and reflecting it through indicator lights.

[0004] To this end, current researchers have studied and designed some methods for detecting the degree of filter blockage, but these methods generally add a water pressure sensor to the water flow channel of the suction machine to determine the degree of filter blockage by detecting the change in water pressure in the water flow channel. However, the existing solution of measuring the degree of filter blockage by using a water pressure sensor is relatively complicated to install and arrange, and the process of measuring water pressure by the water pressure sensor will affect the suction force of the suction-type underwater cleaning equipment. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a new sewage suction machine and a method for detecting the blockage degree of the filter in the sewage suction machine, which has a relatively simple installation arrangement and can detect the blockage degree of the filter without setting a water pressure sensor, and will not affect the suction force of the sewage suction machine.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a sewage suction machine, comprising: a shell and a filter, a water pump, a controller and a sensor arranged in the shell, the shell is provided with a sewage suction port and a water outlet, the shell is provided with a water flow channel connected with the sewage suction port and the water outlet, the filter is arranged in the water flow channel, and the water pump is at least partially arranged in the water flow channel; wherein, the controller is connected to the water pump and the sensor respectively, and the sensor includes a sound sensor and / or a vibration sensor.

[0007] Furthermore, in the sewage suction machine described in the present invention, a sealed cabin is also provided in the shell, and the controller is arranged in the sealed cabin.

[0008] Furthermore, the sewage suction machine described in the present invention also includes an indicating device, which is arranged on the shell and is electrically connected to the controller.

[0009] Furthermore, in the sewage suction machine described in the present invention, the indicating device includes an indicator light and / or a buzzer.

[0010] Furthermore, in the sewage suction machine described in the present invention, the filter includes a filter screen, and the filter screen is fixedly connected to the side wall of the water flow channel.

[0011] Furthermore, in the sewage suction machine described in the present invention, the sensor is arranged in the water flow channel, and the sensor is arranged at one end of the water flow channel close to the water outlet.

[0012] Furthermore, in the sewage suction machine described in the present invention, the sensor is arranged in the water flow channel, and the sensor is arranged on one side of the water pump.

[0013] Correspondingly, another object of the present invention is to provide a method for detecting the degree of clogging of the filter in a sewage suction machine. The method for detecting the degree of clogging of the filter in a sewage suction machine is implemented based on the above-mentioned sewage suction machine of the present invention, and the degree of clogging of the filter can be obtained by collecting sound signal and / or vibration signal during the operation of the sewage suction machine.

[0014] In the present invention, a specific technical solution is: a method for detecting the degree of blockage of a filter in a sewage suction machine, which is applied to the sewage suction machine mentioned above in the present invention, and comprises the steps of:

[0015] Collecting sound level information and / or vibration information of the sewage suction machine during operation;

[0016] Obtaining filter clogging information according to the sound volume information and a pre-calibrated mapping relationship between the sound volume and the filter clogging degree;

[0017] And / or the filter clogging information is obtained according to the vibration information and a mapping relationship between pre-calibrated vibration information and the filter clogging degree.

[0018] Furthermore, in the method for detecting the degree of filter blockage in a sewage suction machine described in the present invention, the collecting of vibration information during the operation of the sewage suction machine specifically includes: collecting vibration frequency information and / or vibration amplitude information during the operation of the sewage suction machine.

[0019] Furthermore, in the method for detecting the clogging degree of the filter in the sewage suction machine of the present invention, the clogging information of the filter is obtained according to the mapping relationship between the vibration information and the pre-calibrated vibration information and the clogging degree of the filter, specifically:

[0020] Obtain filter clogging information according to the vibration frequency information and a mapping relationship between a pre-calibrated vibration frequency and a filter clogging degree;

[0021] And / or the filter clogging information is obtained according to the vibration amplitude information and a mapping relationship between a pre-calibrated vibration amplitude and a filter clogging degree.

[0022] The beneficial effects of the present invention are as follows: the inventor has optimized and designed a new sewage suction machine and a method for detecting the degree of filter blockage in the sewage suction machine, which can use a sound sensor and / or a vibration sensor to detect the sound information and / or vibration information of the sewage suction machine when it is working, and can obtain the degree of filter blockage based on the above sound information and / or vibration information, so as to provide timely warning to the user; the installation arrangement of the above sound sensor and / or vibration sensor is relatively simple, and at the same time will not affect the suction force of the sewage suction machine, and it has good promotion prospects and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the sewage suction machine of the present invention in one embodiment;

[0024] Description of labels:

[0025] 1. Shell; 11. Sewage suction port; 12. Water outlet; 13. Water flow channel;

[0026] 2. Filter; 21. Filter;

[0027] 3. Water pump;

[0028] 4. Controller;

[0029] 5. Sensor;

[0030] 6. Sealed cabin;

[0031] 7. Indicator device. DETAILED DESCRIPTION

[0032] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0033] Research has found that in the current existing technology, although there are vacuum cleaners on the market that can detect the degree of filter blockage, the vacuum cleaners on the market generally use water pressure sensors to detect changes in water pressure in the water flow channel to determine the degree of filter blockage. This solution of using water pressure sensors to measure the degree of filter blockage is very complicated in actual installation and layout, and the process of measuring water pressure by the water pressure sensor will affect the suction force of the suction-type underwater cleaning equipment.

[0034] To do this, please refer to Figure 1 As shown, the present invention designs a sewage suction machine, which includes a shell 1 and a filter 2, a water pump 3, a controller 4 and a sensor 5 arranged in the shell 1, the shell 1 is provided with a sewage suction port 11 and a water outlet 12, the shell 1 is provided with a water flow channel 13 connected with the sewage suction port 11 and the water outlet 12, the filter 2 is arranged in the water flow channel 13, and the water pump 3 is at least partially arranged in the water flow channel 13; wherein, the controller 4 is connected to the water pump 3 and the sensor 5 respectively, and the sensor 5 includes a sound sensor and / or a vibration sensor.

[0035] It can be seen from the above description that in the present invention, the inventor has optimized and designed a new sewage suction machine, and the overall structure of the sewage suction machine of the present invention is not much different from the existing sewage suction machine; in specific application, the water pump 3 partially arranged in the water flow channel 13 can effectively pump sewage from the sewage suction port 11 into the shell 1, and make the sewage flow in the water flow channel 13, so that the sewage entering the water flow channel 13 can be discharged from the drain port after being filtered by the filter 2; wherein, Figure 1 The X in the figure represents the flow trajectory of the water flow. Different from the prior art, in the sewage suction machine designed by the present invention, a sound sensor and / or a vibration sensor are also installed in the housing 1, which can pre-calibrate the mapping relationship between the sound level (decibel), vibration information and the degree of filter blockage, and then use the sound sensor and the vibration sensor to detect the sound level information and / or vibration information (including vibration frequency information and / or vibration amplitude information) during the operation of the sewage suction machine, so as to determine the degree of blockage of the filter 2 in the sewage suction machine, so as to give the user a timely warning when the filter 2 is blocked.

[0036] When actually designing such a sewage suction machine, it is only necessary to set the above-mentioned sound sensor and / or vibration sensor in the sewage suction machine to achieve the above-mentioned beneficial effects. The installation is simple and will not affect the structure of the water flow channel 13, thereby not affecting the cleaning ability. In other words, in the sewage suction machine designed by the present invention, the installation and arrangement of the above-mentioned sound sensor and / or vibration sensor is relatively simple and will not affect the suction force of the sewage suction machine. It can solve the problem that the installation and arrangement of the existing solution of measuring the blockage degree of the filter by a water pressure sensor is complicated and will affect the suction force of the sewage suction machine.

[0037] Furthermore, in the sewage suction machine described in the present invention, a sealed cabin 6 is further provided in the shell 1 , and the controller 4 is disposed in the sealed cabin 6 .

[0038] In the above technical solution of the present invention, in some specific embodiments, a sealed cabin 6 can also be provided in the shell 1 of the above-mentioned sewage suction machine, and the controller 4 and some other circuit parts can be provided in the sealed cabin 6 to prevent the sewage sucked into the sewage suction machine from contaminating the controller 4 and the circuit parts.

[0039] like Figure 1 In the embodiment shown, based on this arrangement, in actual use, the water pump 3 may include a motor and an impeller, the motor may be electrically connected to the controller 4, and the motor of the water pump 3 and the controller 4 are arranged together in the sealed cabin 6 to prevent being contaminated by sewage and thus affecting normal use. Accordingly, the impeller of the water pump 3 may be specifically arranged in the water flow channel 13, and the impeller may rotate under the drive of the motor, so as to draw sewage from the sewage suction port 11 into the housing 1, and drive the water in the water flow channel 13 to move.

[0040] Furthermore, the sewage suction machine of the present invention further comprises an indicating device 7 , which is arranged on the housing 1 and is electrically connected to the controller 4 .

[0041] Furthermore, in the sewage suction machine described in the present invention, the indicating device 7 includes an indicator light and / or a buzzer.

[0042] Currently, when the underwater handheld vacuum cleaner is cleaning for a period of time, the filter 2 will be clogged with fine dust due to the accumulation of fine dust, which will cause the water intake to slowly decrease, the drainage to decrease, and finally cause the cleaning ability of the vacuum cleaner to continuously decrease. If the swimming pool is particularly dirty, the filter 2 of the vacuum cleaner will be clogged quickly, and subsequent cleaning will be ineffective, which is likely to cause user complaints.

[0043] Therefore, when the sewage suction machine is actually used, an indicator device 7 can also be set on the sewage suction machine. The indicator device 7 can include an indicator light and / or a buzzer. Once it is detected that the blockage degree of the filter 2 exceeds the set threshold, the controller 4 can send an alarm signal to the indicator device 7. At this time, the indicator light of the indicator device 7 can light up and the buzzer sounds an alarm to remind the user to clean the filter 2 of the sewage suction machine in time to ensure the cleaning ability of the sewage suction machine.

[0044] Furthermore, in the sewage suction machine of the present invention, the filter 2 includes a filter screen 21 , and the filter screen 21 is fixedly connected to the side wall of the water flow channel 13 .

[0045] In the above technical solution of the present invention, in order to ensure the filtering effect of the filter 2, a filter screen 21 may be further provided in the filter 2, and the filter screen 21 may be fixedly connected to the side wall of the water flow channel 13. In some preferred embodiments, in order to ensure the filtering effect of the filter screen 21, the surface area of ​​the filter screen 21 may be the same as the cross-sectional area of ​​the water flow channel 13.

[0046] Furthermore, in the sewage suction machine described in the present invention, the sensor 5 is disposed in the water flow channel 13 , and the sensor 5 is disposed at one end of the water flow channel 13 close to the water outlet 12 .

[0047] In order to improve the collection effect of the above-mentioned sensor 5, in some preferred embodiments, the sensor 5 can be set in the water flow channel 13, and specifically set at one end of the water flow channel 13 close to the water outlet 12. Among them, the reason why the sensor 5 is set at a position close to the water outlet 12 is that: the sensor 5 set at a position close to the water outlet 12 can effectively detect the sound size and / or vibration frequency and vibration amplitude caused by the water flow speed in the water flow channel 13. Of course, in actual settings, when the sensor 5 is set in the water flow channel 13, it is also preferred to set the sensor 5 at a position where the water flow can directly impact, so as to more conveniently detect and collect the sound size information and / or vibration information generated by the positive impact of the water flow.

[0048] Furthermore, in the sewage suction machine described in the present invention, the sensor 5 is disposed in the water flow channel 13 , and the sensor 5 is disposed on one side of the water pump 3 .

[0049] In order to improve the collection effect of the sensor 5, in some preferred embodiments, the sensor 5 can be arranged in the water flow channel 13, and specifically arranged on one side of the water pump 3. The reason why the sensor 5 is arranged on one side of the water pump 3 is that the sensor 5 arranged on one side of the water pump 3 can effectively detect the sound size information and / or vibration information emitted by the water pump 3 under different loads.

[0050] Accordingly, in order to facilitate the implementation of the above-mentioned sewage suction machine of the present invention, the inventors have also designed a method for detecting the degree of clogging of the filter in the sewage suction machine, which specifically includes the steps of:

[0051] Collecting sound level information and / or vibration information of the sewage suction machine during operation;

[0052] Obtaining the clogging information of the filter 2 according to the sound volume information and the mapping relationship between the pre-calibrated sound volume and the filter clogging degree;

[0053] And / or the clogging information of the filter 2 is obtained according to the vibration information and a mapping relationship between pre-calibrated vibration information and the filter clogging degree.

[0054] Furthermore, in the method for detecting the degree of filter blockage in a sewage suction machine described in the present invention, the collecting of vibration information during the operation of the sewage suction machine specifically includes: collecting vibration frequency information and / or vibration amplitude information during the operation of the sewage suction machine.

[0055] Further, in the method for detecting the clogging degree of the filter in the sewage suction machine described in the present invention, the clogging information of the filter 2 is obtained according to the mapping relationship between the vibration information and the pre-calibrated vibration information and the clogging degree of the filter, specifically:

[0056] Obtaining the clogging information of the filter 2 according to the vibration frequency information and the mapping relationship between the pre-calibrated vibration frequency and the filter clogging degree;

[0057] And / or the clogging information of the filter 2 is obtained according to the vibration amplitude information and a mapping relationship between a pre-calibrated vibration amplitude and a filter clogging degree.

[0058] It can be seen that in the present invention, in order to obtain the blockage degree of the filter 2 in the sewage suction machine based on the collected sound volume information and vibration information, the inventor also needs to calibrate the mapping relationship between the sound volume information and / or vibration information and the filter blockage degree in the controller 4 in advance, so that the blockage degree of the filter 2 can be obtained based on the actual collected sound volume information and vibration information.

[0059] Among them, the vibration information may include vibration frequency information and / or vibration amplitude information. The vibration frequency information actually collected can obtain the blockage information of filter 2 according to the mapping relationship between the pre-calibrated vibration frequency and the filter blockage degree, thereby judging the blockage degree of filter 2; and the vibration amplitude information actually collected can also obtain the blockage information of filter 2 according to the mapping relationship between the pre-calibrated vibration amplitude and the filter blockage degree, thereby judging the blockage degree of filter 2.

[0060] Embodiment 1:

[0061] Please refer to Figure 1 As shown, the first embodiment of the present invention is: a sewage suction machine, which comprises a housing 1 and a filter 2, a water pump 3, a controller 4 and a sound sensor arranged in the housing 1, a sewage suction port 11 is provided at the lower end of the housing 1, a water outlet 12 is provided at one side of the housing 1, and a water flow channel 13 connected with the sewage suction port 11 and the water outlet 12 is provided in the housing 1. The filter screen 21 of the filter 2 is fixedly connected to the side wall of the water flow channel 13.

[0062] In the first embodiment, the water pump 3 specifically includes a motor and an impeller, the motor can be electrically connected to the controller 4, and the motor of the water pump 3 and the controller 4 are arranged together in the sealed cabin 6 to prevent being contaminated by sewage and thus affecting normal use. Accordingly, in the present embodiment, the impeller of the water pump 3 is arranged in the water flow channel 13, and a sound sensor is also arranged in the water flow channel 13, the sound sensor is connected to the controller 4, and the sound sensor is specifically arranged in the water flow channel 13 near the water outlet 12 of the housing 1, which can collect the sound size information caused by the water flow velocity in the water flow channel 13.

[0063] Correspondingly, in the first embodiment, an indicating device 7 is further provided on the housing 1 . The indicating device 7 includes an indicator light and a buzzer, and the indicating device 7 can be electrically connected to the controller 4 .

[0064] Before the sewage suction machine of the first embodiment is actually used, it is necessary to pre-calibrate the mapping relationship between the sound volume and the filter blockage degree in the controller 4, and pre-set the preset alarm threshold in the controller 4. When the sewage suction machine is turned on, the impeller can rotate under the drive of the motor, so that the sewage is sucked into the housing 1 from the sewage suction port 11. After the sewage enters the housing 1, it passes through the filter screen 21 of the filter 2 and is discharged from the water outlet 12. Figure 1 The X in the middle represents the flow trajectory of the water.

[0065] During the operation of the sewage suction machine, the sound sensor is placed at the water outlet 12. At this time, the sound sensor can collect the sound information caused by the water flow in the water flow channel 13 in real time. The sound sensor can monitor the change of the sound of the water flow and determine the water flow rate. When the filter screen 21 of the filter 2 is clean, the sound information collected by the sound sensor is greater than the preset alarm threshold, and it is normal cleaning at this time; when the filter screen 21 of the filter 2 is blocked to a certain extent after the sewage suction machine has been cleaned for a period of time, the water flow will gradually decrease, and the sound decibel will decline linearly until the sound information drops below the preset alarm threshold. It will be sampled three times, and if it continues to be lower than the preset alarm threshold, it will be reported to the controller 4.

[0066] In the first embodiment, the specific sound level information collected by the sound sensor, the drainage volume determined based on the sound level information, the mapping relationship between the sound level and the filter blockage degree established based on the sound level, and the implementation of the specific scheme of alarm determination can be referred to in the following Table 1:

[0067] Table 1.

[0068]

[0069] It can be seen that when the filter screen 21 of the filter 2 is blocked, the drainage volume is reduced, the water flow rate will slow down, the sound decibel will become smaller, and the sound volume information collected by the sound sensor will become smaller. When the sound volume information collected by the sound sensor is lower than the preset alarm threshold, the sound sensor will report the data to the controller 4, and the controller 4 will send an alarm signal to the indicating device 7. After the above-mentioned indicating device 7 receives the alarm signal from the controller 4, its indicator light will light up (such as bright red light) and the buzzer will sound to give the user a warning.

[0070] Embodiment 2:

[0071] In the second embodiment, the structure of the sewage suction machine designed in the second embodiment is exactly the same as that of the sewage suction machine in the first embodiment, but it should be pointed out that the difference between the second embodiment and the above-mentioned first embodiment is: in the second embodiment, the sound sensor is specifically arranged in the water flow channel 13 and is arranged on one side of the water pump 3 to collect the sound volume information emitted by the water pump 3 under different loads.

[0072] When the sewage suction machine of the second embodiment is actually applied, it is necessary to calibrate the mapping relationship between the sound volume and the filter blockage degree in the controller 4 in advance, and set a preset threshold in the controller 4 in advance. When the sewage suction machine is working, the sound sensor arranged on one side of the water pump 3 can collect the sound volume information emitted by the water pump 3 under different loads in real time, and then transmit the collected sound volume information to the controller 4. The controller 4 obtains the current filter blockage degree information according to the mapping relationship between the preset calibrated sound volume and the filter blockage degree through the collected sound volume information, and sends an alarm signal to the indicating device 7 when the current sound volume is greater than the preset threshold. After the indicating device 7 receives the alarm signal from the controller 4, its indicator light will light up (such as bright red light), and the buzzer will sound to give the user a warning.

[0073] Embodiment three:

[0074] In the third embodiment, the structure of the sewage suction machine designed in the third embodiment can refer to the sewage suction machine of the first embodiment except for the selection of the sensor 5.

[0075] It should be emphasized that the difference between the present third embodiment and the above-mentioned first embodiment is that in the present third embodiment, the sensor 5 arranged at one end of the water flow channel 13 close to the water outlet 12 is a vibration sensor, which is used to collect the vibration frequency information and / or vibration amplitude information of the water flow in the water flow channel 13.

[0076] When the sewage suction machine of the third embodiment is actually used, it is necessary to pre-calibrate the mapping relationship between the vibration frequency information and / or the vibration amplitude information and the filter blockage degree in the controller 4, and pre-set a preset threshold in the controller 4. During the operation of the sewage suction machine, the sound sensor arranged in the water flow channel 13 can collect the vibration frequency information and / or the vibration amplitude information caused by the water flow in the water flow channel 13 in real time.

[0077] When the vibration frequency information is collected, it can obtain the clogging information of the filter 2 according to the vibration frequency information and the mapping relationship between the pre-calibrated vibration frequency and the filter clogging degree;

[0078] When the vibration frequency information is collected, the clogging information of the filter 2 is obtained according to the vibration amplitude information and the mapping relationship between the pre-calibrated vibration amplitude and the filter clogging degree.

[0079] With respect to the filter blockage information obtained based on the vibration frequency information and the filter blockage information obtained based on the vibration amplitude information, the controller 4 can judge and confirm the final filter blockage information, and when the current vibration frequency and / or vibration amplitude is greater than a preset threshold, an alarm signal is sent to the indicator device 7. After the above-mentioned indicator device 7 receives the alarm signal from the controller 4, its indicator light will light up (such as a bright red light) and a buzzer will sound to give the user a warning.

[0080] Embodiment 4:

[0081] In the fourth embodiment, the structure of the sewage suction machine designed in the fourth embodiment is exactly the same as that of the sewage suction machine in the third embodiment, but it should be pointed out that the difference between the fourth embodiment and the above-mentioned third embodiment is: in the second embodiment, the vibration sensor is specifically arranged in the water flow channel 13 and is arranged on one side of the water pump 3 to collect the vibration frequency information and / or vibration amplitude information emitted by the water pump 3 under different loads.

[0082] Correspondingly, in the sewage suction machine of the fourth embodiment, the method of obtaining the filter blockage degree based on the collected vibration frequency information and / or vibration amplitude information can refer to the above-mentioned third embodiment, and will not be described in detail here.

[0083] In addition, it should be pointed out that in some preferred embodiments, when designing the sewage suction machine, a sound sensor and a vibration sensor can be simultaneously set in the housing 1 to respectively collect sound volume information, vibration frequency information and vibration amplitude information. When the controller 4 obtains the corresponding filter 2 blockage information based on these three types of information, the controller 4 can confirm and obtain the final filter blockage information according to the preset judgment logic. The reason for this setting is to improve the accuracy of the sewage suction machine in detecting the filter blockage degree.

[0084] From the above, it can be seen that in the sewage suction machine and the method for detecting the degree of blockage of the filter in the sewage suction machine designed by the present invention, the inventor has optimized and designed a new sewage suction machine and a method for detecting the degree of blockage of the filter in the sewage suction machine, which can use sound sensors and / or vibration sensors to detect the sound information and / or vibration information of the sewage suction machine when it is working, and can obtain the blockage degree of the filter based on the above sound information and / or vibration information, so as to provide timely warning to the user; the installation arrangement of the above sound sensors and / or vibration sensors is relatively simple, and will not affect the suction force of the sewage suction machine, and it has good promotion prospects and application value.

[0085] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sewage suction machine, characterized in that: include: A shell and a filter, a water pump, a controller and a sensor arranged in the shell, the shell is provided with a sewage suction port and a water outlet, the shell is provided with a water flow channel connected with the sewage suction port and the water outlet, the filter is arranged in the water flow channel, and the water pump is at least partially arranged in the water flow channel; wherein the controller is connected to the water pump and the sensor respectively, and the sensor includes a sound sensor and / or a vibration sensor.

2. The sewage suction machine according to claim 1, characterized in that: A sealed cabin is also provided in the shell, and the controller is arranged in the sealed cabin.

3. The sewage suction machine according to claim 1, characterized in that: It also includes an indicating device, which is arranged on the shell and is electrically connected to the controller.

4. The sewage suction machine according to claim 3, characterized in that: The indicating device includes an indicator light and / or a buzzer.

5. The sewage suction machine according to claim 1, characterized in that: The filter comprises a filter screen, and the filter screen is fixedly connected to the side wall of the water flow channel.

6. The sewage suction machine according to claim 1, characterized in that: The sensor is arranged in the water flow channel, and the sensor is arranged at one end of the water flow channel close to the water outlet.

7. The sewage suction machine according to claim 1, characterized in that: The sensor is arranged in the water flow channel, and the sensor is arranged on one side of the water pump.

8. A method for detecting the blockage degree of a filter in a sewage suction machine, applied to the sewage suction machine as claimed in any one of claims 1 to 7, characterized in that: Includes steps: Collecting sound level information and / or vibration information of the sewage suction machine during operation; Obtaining filter clogging information according to the sound volume information and a pre-calibrated mapping relationship between the sound volume and the filter clogging degree; And / or the filter clogging information is obtained according to the vibration information and a mapping relationship between pre-calibrated vibration information and the filter clogging degree.

9. The method for detecting the blockage degree of the filter in the sewage suction machine according to claim 8, characterized in that: The collecting of vibration information of the sewage suction machine during operation specifically includes: collecting vibration frequency information and / or vibration amplitude information of the sewage suction machine during operation.

10. The method for detecting the blockage degree of the filter in the sewage suction machine according to claim 9, characterized in that: According to the mapping relationship between the vibration information and the pre-calibrated vibration information and the filter blockage degree, the filter blockage information is obtained, specifically: Obtain filter clogging information according to the vibration frequency information and a mapping relationship between a pre-calibrated vibration frequency and a filter clogging degree; And / or the filter clogging information is obtained according to the vibration amplitude information and a mapping relationship between a pre-calibrated vibration amplitude and a filter clogging degree.

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