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CN-117536304-B - Filter screen, drainer, water tank and water tank anti-blocking control method

CN117536304BCN 117536304 BCN117536304 BCN 117536304BCN-117536304-B

Abstract

The application discloses a filter screen, a drainer, a water tank and a water tank anti-blocking control method, wherein the filter screen comprises a first filter screen and a second filter screen, the second filter screen is at least partially positioned in the first filter screen and is in rotary fit with the first filter screen, and the second filter screen is in positioning fit with the first filter screen in the rotary axis direction of the second filter screen. The above scheme can prevent the filter screen from blocking at least.

Inventors

  • REN FUJIA
  • CHENG YUNLONG
  • WANG YUMIN
  • LI XIAOWEI
  • YU MINGYUE

Assignees

  • 杭州老板电器股份有限公司

Dates

Publication Date
20260505
Application Date
20231130

Claims (9)

  1. 1. The drainer (5) is characterized by comprising a drainer shell (501), a filter screen and a driving device, wherein the filter screen is positioned in the drainer shell (501), the filter screen comprises a first filter screen (1), a second filter screen (2), an axial positioning piece (3) and a transmission part (4), the second filter screen (2) is at least partially positioned in the first filter screen (1), the second filter screen (2) and the first filter screen (1) are respectively in rotary fit with the axial positioning piece (3), and the second filter screen (2) and the first filter screen (1) are respectively in rotary fit with the axial positioning piece (3) in the axial direction of rotation of the axial positioning piece; The axial positioning piece (3) comprises an annular main body, the annular main body is sleeved on the outer side of the first filter screen (1), one of a first protrusion (104) and a first groove (301) is arranged on the inner side of the annular main body, the other one of the first protrusion (104) and the first groove (301) is arranged on the outer side of the first filter screen (1), the first protrusion (104) is at least partially positioned in the first groove (301), and the first groove (301) is an annular groove coaxial with the axial direction; One of a second bulge and a second groove (302) is arranged on the outer side of the annular main body, a flanging (202) is arranged at the opening of the second filter screen (2), the other one of the second bulge and the second groove (302) is arranged on the flanging (202), the second bulge is at least partially positioned in the second groove (302), and the second groove (302) is an annular groove coaxial with the axial direction; The transmission part (4) comprises a planet carrier (401), at least one planet wheel (403) is rotatably arranged on the planet carrier (401), at least one circle of internal teeth is arranged on the inner side of the first filter screen (1), at least one circle of first external teeth (205) is arranged on the outer side of the second filter screen (2), and the planet wheel (403) is meshed with the internal teeth and the first external teeth (205) respectively; the driving device is used for driving the first filter screen (1) to rotate.
  2. 2. The drain (5) according to claim 1, wherein the first screen (1) is provided with at least a plurality of first filtering holes (101); The second filter screen (2) is provided with a plurality of second filter holes (201) at least, and the opening of the second filter holes (201) is larger than the opening of the first filter holes (101).
  3. 3. The drainer (5) according to claim 1, wherein the driving device comprises a driving motor (503), the driving motor (503) is arranged outside the drainer housing (501), a transmission shaft of the driving motor (503) stretches into the drainer housing (501) and is fixedly connected with a driving gear (504), at least one circle of second external teeth (103) is arranged outside the first filter screen (1), and the driving gear (504) is meshed with the second external teeth (103).
  4. 4. A drain (5) according to claim 1 or 3, further comprising a pressure sensor (508), a control device (505) and an electric filler valve (507); The pressure sensor (508) is used for detecting the pressure value of the filter screen acting on the pressure sensor (508); The control device (505) is used for determining whether to open the electric water injection valve (507) to inject water into the drainer shell (501) according to the pressure value, and/or controlling the driving device to drive the first filter screen (1) to rotate.
  5. 5. The drainer (5) according to claim 4, wherein a water flow injection port (509) is provided on the drainer housing (501), and a water flow injection direction of the water flow injection port (509) is tangential to an outer circumferential surface of the first screen (1); the water outlet of the electric water injection valve (507) is communicated with the water flow injection port (509).
  6. 6. The drainer (5) according to claim 5, wherein the water jet opening (509) is an elongated hole, and the elongated hole has a length extending in a direction parallel to the axis of the first screen (1).
  7. 7. A sink, characterized by comprising a tank body (6), the bottom of the tank body (6) being provided with a drain opening, the drain opening being connected with a drain (5) according to any one of claims 4-6.
  8. 8. A method of controlling blocking prevention of a sink, applied to a drain (5) according to any one of claims 4 to 6 or a sink according to claim 7, comprising the steps of: acquiring a pressure value of the filter screen acting on a pressure sensor (508) in real time; According to the pressure value, whether the electric water injection valve (507) is opened or not is determined so as to inject water into the drainer shell (501) of the water tank to flush the filter screen, and/or whether the first filter screen (1) and the second filter screen (2) are controlled to rotate respectively or not is determined.
  9. 9. The method according to claim 8, wherein the step of determining whether to open the electric water injection valve (507) to inject water into the drainer housing (501) to flush the screen according to the magnitude of the pressure value, and/or whether to control the first screen (1) and the second screen (2) to rotate respectively, specifically: If V 0 <V<2V 1 is set, the electric water injection valve (507) is opened to inject water into the drainer shell (501) to wash the filter screen, and the first filter screen (1) and the second filter screen (2) are controlled to rotate respectively; If V is more than 2V 1 , opening the electric water injection valve (507) to inject water into the drainer shell (501) to wash the filter screen, and controlling the first filter screen (1) and the second filter screen (2) to rotate respectively until V is less than 2V 1 ; Wherein V 0 is a first pressure threshold acting on the pressure sensor (508) when no residue exists in the filter screen, V is the pressure value, and V 1 is a second pressure threshold acting on the pressure sensor (508) when residue is filled in the filter screen.

Description

Filter screen, drainer, water tank and water tank anti-blocking control method Technical Field The invention relates to the technical field of kitchen equipment, in particular to a filter screen, a drainer, a water tank and a water tank anti-blocking control method. Background In the prior kitchen sink, in order to prevent kitchen residue (garbage) from directly flowing into the sewer pipe along with water flow to cause the sewer pipe to be blocked, a filter screen (also called a filter basket) is generally arranged at a water outlet of the sink to filter the kitchen residue, so that the problem that the sewer pipe is blocked due to the kitchen residue directly entering the sewer pipe can be solved, but the filter screen is easily blocked by the kitchen residue, so that the kitchen residue in the filter screen needs to be poured manually frequently. Because the filter screen contains kitchen residues, the filter screen is relatively dirty, and for some users, the filter screen can be cleaned by bare hands, which has a certain psychological trouble. Disclosure of Invention The present application is intended to provide a filter screen, a drainer, a sump, and a sump anti-blocking control method, at least for preventing clogging of the filter screen. In a first aspect, the present invention provides a filter screen comprising: A first filter screen; The second filter screen is at least partially positioned in the first filter screen and is in running fit with the first filter screen, and the second filter screen is in positioning fit with the first filter screen in the rotating axial direction. As an implementation manner, the filter screen further comprises an axial positioning piece, the second filter screen and the first filter screen are respectively in running fit with the axial positioning piece, and the second filter screen and the first filter screen are respectively in positioning fit with the axial positioning piece in the axial direction. As an implementation manner, the axial positioning piece comprises an annular main body, the annular main body is sleeved on the outer side of the first filter screen, one of a first protrusion and a first groove is arranged on the inner side of the annular main body, the other one of the first protrusion and the first groove is arranged on the outer side of the first filter screen, the first protrusion is at least partially positioned in the first groove, and the first groove is an annular groove coaxial with the axial direction. As an achievable mode, one of a second protrusion and a second groove is arranged on the outer side of the annular main body, a flanging is arranged at the opening of the second filter screen, the other one of the second protrusion and the second groove is arranged on the flanging, the second protrusion is at least partially positioned in the second groove, and the second groove is an annular groove coaxial with the axial direction. As an implementation manner, the filter screen further comprises a transmission part, and the transmission part is used for driving the second filter screen to rotate by the first filter screen. As an implementation manner, the transmission part comprises a planet carrier, at least one planet wheel is rotatably arranged on the planet carrier, at least one circle of internal teeth is arranged on the inner side of the first filter screen, at least one circle of first external teeth is arranged on the outer side of the second filter screen, and the planet wheels are respectively meshed with the internal teeth and the first external teeth. As an implementation manner, the first filter screen is provided with at least a plurality of first filter holes; The second filter screen is provided with a plurality of second filtration holes at least, the opening of second filtration hole is greater than the opening of first filtration hole. In a second aspect, the present invention provides a drain comprising a drain housing, and a screen as described above, the screen being located within the drain housing; the filter screen further comprises a driving device, wherein the driving device is used for driving the first filter screen to rotate. As an implementation manner, the driving device comprises a driving motor, the driving motor is arranged outside the drainer shell, a transmission shaft of the driving motor stretches into the drainer shell and is fixedly connected with a driving gear, at least one circle of second external teeth is arranged on the outer side of the first filter screen, and the driving gear is meshed with the second external teeth. As an realizable mode, the device also comprises a pressure sensor, a control device and an electric water injection valve; the pressure sensor is used for detecting the pressure value of the filter screen acting on the pressure sensor; the control device is used for determining whether to open the electric water injection valve to inject water into the drainer shell accordin