A filtering method for a ground grinding robot

Abstract

The invention discloses a filtering method for a floor grinding robot, which belongs to the technical field of floor construction. The method is used for a floor grinding robot, and the method comprises the following steps: the floor grinding robot works, and the sewage is pumped into a sewage tank from a squeegee; the first water level sensor in the sewage tank senses that the liquid level has reached the upper limit, and the submersible pump is started to pump the sewage mixture to a sedimentation tank; the solenoid valve is opened, and the PAC and PAM solvents flow into the sedimentation tank in sequence; the stirring motor drives the blades to stir, so that the sewage mixture fully reacts with the PAC and PAM solvents; after the reaction is completed, the water valve is opened, and the reacted mixture falls into the filter box, and is filtered in the filter box to filter out the adhered particles, so as to achieve solid-liquid separation of the sewage. In the present invention, after the PAC and PAM solvents are successively added to the sedimentation tank, the dirt in the sewage can be quickly flocculated, and after filtering, the flocculants are filtered out, so as to achieve solid-liquid stratification, achieve a better filtering effect, and assist in the completion of water circulation.

Description

Technical Field

[0001] The invention relates to the technical field of floor construction, and in particular to a filtering method for a floor grinding robot. Background Art

[0002] Floor laying includes sprinkling water on the ground, grinding, manual sweeping, sewage collection and sewage discharge. Modern floor laying can be done by floor grinding robots, thus overcoming the problems of complex procedures, high labor intensity, noise, dust, leakage, mechanical accidental injury and other harm to human health. At the same time, the municipal water used in the suppression of dust by floor grinding robots can be recycled and filtered, saving water resources.

[0003] When the floor grinding robot in the prior art performs sewage circulation, it is necessary to ensure the filtering effect of fine particles in the sewage. If the fine particles in the sewage cannot be fully filtered, the spray structure is easily blocked, causing failure of the water circulation system. Summary of the invention

[0004] The purpose of the present invention is to provide a filtering method for a floor grinding robot to solve the technical problem of the prior art that a filter box of a water circulation system needs to be protected.

[0005] The present invention provides a filtering method for a floor grinding robot. The method is used for the floor grinding robot. The floor grinding robot comprises a shell and a main frame. The shell is fixed to the surface of the main frame. A PAC and PAM solvent box is arranged on the top of the shell. The PAC and PAM solvent boxes are separated by a partition in the middle and contain PAC solvent and PAM solvent separately. A solenoid valve is arranged at the bottom of the PAC and PAM solvent boxes for controlling conduction. A suction structure and a filtering structure are fixed in the main frame. The suction structure comprises a negative pressure fan, a squeegee, a sewage tank, a submersible pump and a first water level sensor. The filtering structure comprises a sedimentation box, a water valve, a filtering box, a filtering net, a water pump, a stirring motor, blades and a second water level sensor. The method comprises the following steps:

[0006] Sp1: Sewage pumping: The floor grinding robot starts working, and the sewage mixed with fine particles is pumped from the squeegee into the sewage tank through the negative pressure fan;

[0007] Sp2: Sewage transfer: The first water level sensor in the sewage tank senses that the liquid level has reached the upper limit, and starts the submersible pump to pump the sewage mixture to the sedimentation tank;

[0008] Sp3: Adding solvent: the solenoid valve is opened, and the PAC and PAM solvents in the PAC and PAM solvent boxes flow into the precipitation box in sequence;

[0009] Sp4: Flocculation sedimentation: The stirring motor starts to drive the blades to stir, so that the sewage mixture fully reacts with the PAC and PAM solvents. The fine particles in the sewage mixture adhere to each other under the action of the PAC and PAM solvents, thereby increasing the volume of the tiny particles;

[0010] Sp5: Filtration, solid-liquid separation: After a period of reaction, open the water valve, and the reaction mixture falls into the filter box by gravity, and is filtered through the filter net in the filter box to remove the sticky particles and achieve solid-liquid separation of the sewage.

[0011] Furthermore, the PAC and PAM solvents in the PAC and PAM solvent boxes are added to the precipitation box in sequence, and the interval between the additions is 10s-2min. The PAC solvent is added first and can react with the fine particles in 10s-2min. After the reaction is complete, the PAM solvent is added to aid flocculation, which can prevent the reaction between the two solvents.

[0012] Furthermore, the dosage of PAC and PAM solvents in the PAC and PAM solvent box is 3-10 ppm.

[0013] Furthermore, when the flow rate of sewage flowing from the sewage tank into the sedimentation tank is constant, the second water level sensor detects that the water level in the sedimentation tank reaches the upper limit, and controls the water valve to be opened. When the flow rate of sewage flowing from the sewage tank into the sedimentation tank is constant, when the second water level sensor detects that the water level in the sedimentation tank reaches the upper limit, the PAC, PAM solvent and sewage can basically be fully reacted.

[0014] Furthermore, the filtered water in the sedimentation tank is pumped out by a water pump to realize water circulation. The clear water after water circulation can be used for spraying ground water mill water.

[0015] Furthermore, the mesh diameter of the filter is smaller than the diameter of the fine particle flocculants, and the flocculants in the sewage can be filtered by the filter.

[0016] Furthermore, the filter screen is a 100-mesh filter screen.

[0017] Furthermore, the reaction temperature of the PAC and PAM solvents in the PAC and PAM solvent tanks with the sewage is 5-60° C. 5-60° C. can ensure sufficient reaction of the PAC and PAM solvents with the tiny particles in the sewage.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] When the floor grinding robot in the prior art performs sewage circulation, it is necessary to ensure the filtering effect of fine particles in the sewage. If the fine particles in the sewage cannot be fully filtered, the spray structure is easily blocked, causing a failure of the water circulation system. In response to such problems, the present invention designs a filtering method. The mixture of sewage sucked in by the self-priming squeegee will be added with PAC and PAM solvents in the sedimentation tank. The PAC solvent has a good flocculation effect, while the PAM solvent can play a good coagulant effect. After the PAC and PAM solvents are successively added to the sedimentation tank, the dirt in the sewage can be quickly flocculated, so that the fine particles inside it stick together and agglomerate. After being filtered through the filter net, the flocculants are filtered out to achieve solid-liquid stratification, which can achieve a better filtering effect and assist in the completion of water circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the filtering process of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0024] Figure 4 It is a front view of the internal mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the sewage tank and the sedimentation tank in the present invention.

[0026] Reference numerals:

[0027] 1. Shell; 2. Mainframe frame; 3. PAC and PAM solvent tank; 4. Solenoid valve; 5. Suction structure; 51. Negative pressure fan; 52. Squeegee; 53. Sewage tank; 54. Submersible pump; 55. First water level sensor; 6. Filter structure; 61. Sedimentation tank; 62. Water valve; 63. Filter box; 63a. Filter net; 64. Water pump; 65. Stirring motor; 66. Blade; 67. Second water level sensor. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0030] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Combine the following Figures 1 to 5 As shown, an embodiment of the present invention provides a filtering method for a floor grinding robot. The method is used for a floor grinding robot. The floor grinding robot includes a shell 1 and a main frame 2. The shell 1 is fixed to the surface of the main frame 2. A PAC and PAM solvent box 3 is arranged on the top of the shell 1. The PAC and PAM solvent box 3 is separated by a partition to contain PAC solvent and PAM solvent separately. A solenoid valve 4 is arranged at the bottom of the PAC and PAM solvent box 3 for controlling conduction. A suction structure 5 and a filtering structure 6 are fixed in the main frame 2. The suction structure 5 includes a negative pressure fan 51, a squeegee 52, a sewage tank 53, a submersible pump 54 and a first water level sensor 55. The filtering structure 6 includes a sedimentation box 61, a water valve 62, a filter box 63, a filter screen 63a, a water pump 64, a stirring motor 65, a blade 66 and a second water level sensor 67. The method includes the following steps:

[0034] Sp1: sewage pump 64 in: the floor grinding robot starts working, and the sewage mixed with fine particles is pumped from the squeegee 52 into the sewage tank 53 through the negative pressure fan 51;

[0035] Sp2: Sewage transfer: The first water level sensor 55 in the sewage tank 53 senses that the liquid level has reached the upper limit, and starts the submersible pump 54 to pump the sewage mixture to the sedimentation tank 61;

[0036] Sp3: Adding solvent: the solenoid valve 4 is opened, and the PAC and PAM solvents in the PAC and PAM solvent tanks 3 flow into the precipitation tank 61 in sequence;

[0037] Sp4: flocculation sedimentation: the stirring motor 65 is started to drive the blade 66 to stir, so that the sewage mixture and the PAC and PAM solvents fully react, and the fine particles in the sewage mixture adhere to each other under the action of the PAC and PAM solvents, thereby increasing the volume of the tiny particles;

[0038] Sp5: Filtration, solid-liquid separation: After a period of reaction, the water valve 62 is opened, and the reacted mixture falls into the filter box 63 by gravity, and is filtered through the filter screen 63a in the filter box 63 to filter out the adhered particles, thereby achieving solid-liquid separation of the sewage.

[0039] In the floor grinding robot, the suction structure 5 includes a squeegee 52, which is located at the bottom of the main frame 2. The bottom array of the squeegee 52 is provided with suction holes. The suction structure 5 also includes a negative pressure fan 51 and a sewage tank 53. The sewage tank 53 and the negative pressure fan 51 are connected through a hose. The sewage tank 53 is also connected through the hose and the suction holes at the bottom of the squeegee 52. The suction structure 5 also includes a first water level sensor 55 and a submersible pump 54. The first water level sensor 55 and the submersible pump 54 are both arranged in the sewage tank 53. The sewage tank 53 is filled with water through the submersible pump 54. 3 is pumped into the sedimentation box 61; the filtering structure 6 includes the sedimentation box 61, the sedimentation box 61 and the sewage tank 53 can be closed and connected, a water valve 62 is arranged at the bottom of the sedimentation box 61, a filter box 63 is arranged at the bottom of the water valve 62, a water pump 64 is fixed on the side of the filter box 63, and the water in the filter box 63 can be pumped out by the water pump 64. The filtering structure 6 also includes a stirring motor 65, a blade 66 and a second water level sensor 67. The blade 66 and the second water level sensor 67 are both located in the sedimentation box 61, and the rotation of the blade 66 is controlled by the stirring motor 65.

[0040] When the floor grinding robot in the prior art performs sewage circulation, it is necessary to ensure the filtering effect of fine particles in the sewage. If the fine particles in the sewage cannot be fully filtered, the spray structure is easily blocked, causing a failure of the water circulation system. In response to such problems, the present invention designs a filtering method. The mixture of sewage sucked in by the self-squeegee 52 will be added with PAC and PAM solvents in the sedimentation tank 61. The PAC solvent has a good flocculation effect, while the PAM solvent can play a good coagulant effect. After the PAC and PAM solvents are successively added to the sedimentation tank 61, the dirt in the sewage can be quickly flocculated, so that the fine particles inside it adhere to each other and clump together. After being filtered by the filter mesh 63a, the flocculants are filtered out to achieve solid-liquid stratification, which can achieve a better filtering effect and assist in the completion of water circulation.

[0041] Specifically, the PAC and PAM solvents in the PAC and PAM solvent boxes 3 are added to the sedimentation box 61 in sequence, with an interval of 10s-2min between the additions. The PAC solvent is added first and can react with the fine particles in 10s-2min. After the reaction is complete, the PAM solvent is added to aid flocculation, which can prevent the two solvents from reacting with each other.

[0042] Specifically, the dosage of PAC and PAM solvents in the PAC and PAM solvent box 3 is 3-10 ppm.

[0043] Specifically, when the flow rate of sewage flowing from the sewage tank 53 into the sedimentation tank 61 is constant, when the second water level sensor 67 detects that the water level in the sedimentation tank 61 reaches the upper limit, the water valve 62 is controlled to open. When the flow rate of sewage flowing from the sewage tank 53 into the sedimentation tank 61 is constant, when the second water level sensor 67 detects that the water level in the sedimentation tank 61 reaches the upper limit, it can basically meet the full reaction of PAC, PAM solvents and sewage.

[0044] Specifically, the filtered water in the sedimentation tank 61 is pumped out by the water pump 64 to realize water circulation, and the clear water after the water circulation can be used for spraying ground water mill water.

[0045] Specifically, the mesh diameter of the filter 63a is smaller than the diameter of the fine particle flocculants, and the flocculants in the sewage can be filtered by the filter 63a.

[0046] Specifically, the filter screen 63a uses a 100-mesh filter screen.

[0047] Specifically, the reaction temperature of the PAC and PAM solvents in the PAC and PAM solvent box 3 and the sewage is 5-60° C., which can ensure sufficient reaction between the PAC and PAM solvents and the tiny particles in the sewage.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A filtering method for a floor grinding robot, the method being used for the floor grinding robot, the floor grinding robot comprising a housing (1) and a main frame (2), the housing (1) being fixed to the surface of the main frame (2), a PAC and PAM solvent box (3) being arranged on the top of the housing (1), a partition being provided in the middle of the PAC and PAM solvent box (3) to separately contain PAC solvent and PAM solvent, and a solenoid valve (4) being arranged at the bottom of the PAC and PAM solvent box (3) for controlling The main frame (2) is provided with a suction structure (5) and a filtering structure (6), wherein the suction structure (5) comprises a negative pressure fan (51), a squeegee (52), a sewage tank (53), a submersible pump (54) and a first water level sensor (55), and the filtering structure (6) comprises a sedimentation tank (61), a water valve (62), a filtering tank (63), a filtering net (63a), a water pump (64), a stirring motor (65), a blade (66) and a second water level sensor (67), characterized in that: The method comprises the following steps: Sp1: sewage pump (64) in: the floor grinding robot starts working, and the sewage mixed with fine particles is pumped from the squeegee (52) into the sewage tank (53) through the negative pressure fan (51); Sp2: Sewage transfer: the first water level sensor (55) in the sewage tank (53) senses that the liquid level has reached the upper limit, and starts the submersible pump (54) to pump the sewage mixture to the sedimentation tank (61); Sp3: Adding solvent: the solenoid valve (4) is opened, and the PAC and PAM solvents in the PAC and PAM solvent tanks (3) flow into the precipitation tank (61) in sequence; Sp4: flocculation sedimentation: the stirring motor (65) is started to drive the blade (66) to stir, so that the sewage mixture and the PAC and PAM solvents fully react, and the fine particles in the sewage mixture adhere to each other under the action of the PAC and PAM solvents, thereby increasing the volume of the tiny particles; Sp5: Filtration and solid-liquid separation: After a period of reaction, the water valve (62) is opened, and the reaction mixture falls into the filter box (63) by gravity, and is filtered through the filter screen (63a) in the filter box (63) to filter out the adhering particles, thereby achieving solid-liquid separation of the sewage.

2. A filtering method for a floor grinding robot according to claim 1, characterized in that: The PAC and PAM solvents in the PAC and PAM solvent box (3) are added into the precipitation box (61) in sequence, and the interval between the additions is 10s-2min.

3. A filtering method for a floor grinding robot according to claim 1, characterized in that: The dosage of PAC and PAM solvents in the PAC and PAM solvent box (3) is 3-10 ppm.

4. The filtering method for a floor grinding robot according to claim 1, characterized in that: When the flow rate of sewage flowing from the sewage tank (53) into the sedimentation tank (61) is constant, the second water level sensor (67) controls the water valve (62) to open when it detects that the water level in the sedimentation tank (61) reaches the upper limit.

5. The filtering method for a floor grinding robot according to claim 1, characterized in that: The filtered water in the sedimentation tank (61) is pumped out by a water pump (64) to realize water circulation.

6. The filtering method for a floor grinding robot according to claim 1, characterized in that: The mesh diameter of the filter (63a) is smaller than the diameter of the fine particle flocculants, and the flocculants in the sewage can be filtered by the filter (63a).

7. A filtering method for a floor grinding robot according to claim 6, characterized in that: The filter screen (63a) is a 100-mesh filter screen.

8. The filtering method for a floor grinding robot according to claim 1, characterized in that: The reaction temperature of the PAC, PAM solvent and sewage in the PAC and PAM solvent box (3) is 5-60°C.

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