Vertical filtering device

Abstract

The invention discloses a vertical filtering device, which comprises: a housing; the filter element is formed by overlapping a plurality of rings, and the cavity of the shell is divided into an outer cavity and an inner cavity by the filter element; an intercepting structure for intercepting particulate matters is arranged between every two adjacent annular filter sheets; a spray washing mechanism; the axial force application mechanism enables every two adjacent annular filter pieces to be close to each other and enables every two adjacent annular filter pieces to be far away from each other; a torsion drive mechanism; the annular filter sheets comprise a first annular filter sheet and a second annular filter sheet; the first annular filter sheet and the second annular filter sheet are coaxial and are alternately overlapped with each other; a disturbance component is arranged on one side, facing the interception structure, of the first annular filter or the second annular filter; the torsion driving mechanism is used for providing power, so that all the first annular filtering pieces rotate relative to all the first annular filtering pieces, and the disturbance component passes through the intercepting structure when rotating along with the first annular filtering pieces.

Description

Technical Field

[0001] The invention relates to the technical field of water purification, and in particular to a vertical filtering device. Background Art

[0002] In the prior art, a vertical filter device for filtering particles in water generally includes a housing with a water inlet and a water outlet, a filter element disposed in the housing, and a cleaning mechanism for cleaning the filter element; the filter element is formed by stacking a plurality of filter plates axially to form a cylindrical structure, and the filter element of the cylindrical structure divides the housing into an outer cavity located radially outside and an inner cavity located radially inside, and the water to be filtered enters the outer cavity through the water inlet and enters the inner cavity after passing through two adjacent filter plates, and the particles in the water are intercepted in the process of flowing through the filter plates, thereby achieving filtration. The reason why the filter plates can intercept particles is that the opposite surfaces of each of the two filter plates are provided with a plurality of prismatic grooves, and the grooves on the two opposite surfaces intersect with each other. When water passes through the intersecting grooves, the particles stay in the intersection area of ​​the grooves due to the swirl.

[0003] The vertical filtering device in the prior art also provides a function for cleaning the filter element. Specifically, when filtering water, a force-applying mechanism is used to apply a pre-tightening force to the stacked filter plates so that the grooves between the filter plates are adapted to intercept particulate matter. When there are too many particulate matter between the filter plates and affect the filtering efficiency and effect, the force-applying mechanism cancels the pre-tightening force or applies a reverse force to increase the distance between the filter plates. Then, a spray cleaning mechanism (as a cleaning mechanism) is used to spray fluid between the filter plates to clean the surface of the filter plates (this cleaning method may be referred to as spray cleaning). Then, the filtered water is allowed to flow from the inner cavity through the gaps between the filter plates and reversely flow to the outer cavity to clean the surface of the filter plates (this cleaning method may be referred to as reverse cleaning).

[0004] The above-mentioned vertical filtering device in the prior art has at least the following defects:

[0005] 1. It is difficult to completely or quickly remove particles attached to the surface of the filter (in the groove) by the jet cleaning method and the reverse cleaning method. The reason is at least that the flow rate of the fluid in the reverse cleaning method is low and the flow rate of the fluid in the jet cleaning method is severely attenuated.

[0006] 2. The initial throttling pressure of the filter element to the fluid is too large, or the initial resistance of the filter element to the fluid is too large. The reason is at least that the ratio of the sum of the cross-sections of all prismatic grooves to the sum of the cross-sections of the prismatic protrusions between all prismatic grooves is small. Therefore, the flow cross-section of all prismatic grooves allowing fluid to pass through is small.

[0007] 3. The filter element has poor storage capacity for particulate matter, so it needs to be cleaned frequently. In addition, the filter sheet has a small ability to intercept particulate matter, and the particle size range that can effectively intercept particulate matter is small. Summary of the invention

[0008] In view of the above technical problems existing in the prior art, the present invention provides a vertical filtering device.

[0009] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0010] A vertical filtering device, comprising:

[0011] A shell having a water inlet, a water outlet, and a cylindrical cavity;

[0012] A filter element, which is formed by stacking a plurality of annular filter sheets in an axial direction, the filter element is arranged in the housing to divide the cavity into an outer cavity located radially outward and an inner cavity located radially inward, the water inlet is connected to the outer cavity, and the water outlet is connected to the inner cavity; an interception structure for intercepting particulate matter is arranged between each two adjacent annular filter sheets;

[0013] A spray cleaning mechanism, which performs radial spray cleaning on the interception structure based on the pressure difference between the outer cavity and the inner cavity;

[0014] An axial force applying mechanism, which applies an axial force to the filter element so that each two adjacent annular filter sheets are brought closer to each other for intercepting particles and each two adjacent annular filter sheets are moved away from each other for cleaning the interception structure;

[0015] A torsion drive mechanism; wherein:

[0016] The annular filter plate comprises a first annular filter plate and a second annular filter plate; the first annular filter plate and the second annular filter plate are coaxial and alternately stacked with each other;

[0017] A disturbance component is provided on a side of the first annular filter plate or the second annular filter plate facing the interception structure;

[0018] The first annular filter plate and the second annular filter plate are configured as follows:

[0019] The torsion drive mechanism provides power to rotate all the first annular filter plates relative to all the first annular filter plates, so that the disturbance component passes through the interception structure when rotating with the first annular filter plates to separate the particles from the interception structure or assist in separating the particles.

[0020] Preferably, the vertical filtering device further comprises a retaining component;

[0021] The retaining component comprises an inner retaining tube and an outer retaining tube coaxially arranged and located outside the inner retaining tube; the inner retaining tube and the outer retaining tube are both defined by axially arranged grids to form a strip-shaped hollow portion for fluid to pass through;

[0022] The outer retaining tube has a plurality of inner retaining ribs located radially inward, extending axially and arranged circumferentially; each of the inner retaining ribs is provided with a first fitting groove extending axially and opening toward the radial inward; the inner retaining tube has a plurality of outer retaining ribs located radially outward, extending axially and arranged circumferentially; each of the outer retaining ribs is provided with a second fitting groove extending axially and opening toward the radial outward;

[0023] The first annular filter has a plurality of first mating protrusions arranged circumferentially on its radially outer circumferential surface; the second annular filter has a plurality of second mating protrusions arranged circumferentially on its radially inner circumferential surface; wherein:

[0024] The first engaging protrusions of the first annular filter plate slide into the first engaging grooves from the end of the outer retaining tube respectively and correspondingly so that all the first annular filter plates can rotate with the outer retaining tube;

[0025] The plurality of second engaging protrusions of the second annular filter plate slide into the plurality of second engaging grooves correspondingly from the end of the outer retaining tube respectively so as to limit the rotation of all the second annular filter plates through the inner retaining tube.

[0026] Preferably,

[0027] The axial force applying mechanism is a linear drive;

[0028] The torsion drive mechanism includes a rotary driver, a rotating shaft, a driven component, a first transmission gear, a second transmission gear and a spring;

[0029] The linear drive and the rotary drive are both arranged on the top of the housing; the rotating shaft is connected to the linear drive and can rotate relative to the linear drive, the first transmission gear is sleeved on the rotating shaft and can slide along the axial direction of the rotating shaft; the second transmission gear is connected to the rotary drive and meshes with the first transmission gear, and the spring is used to push the first transmission gear upward;

[0030] The driven component comprises a driven body having a cylindrical surface and a driving disk detachably arranged at the lower end of the driven body, the upper end of the driven body is connected to the rotating shaft, and the lower end of the driven body extends into the housing; wherein:

[0031] The radially outer peripheral surface of the driving disk is provided with a plurality of third engaging protrusions arranged circumferentially, and the plurality of third engaging blocks of the driving disk slide into the plurality of first engaging grooves correspondingly from the upper end of the outer retaining tube.

[0032] Preferably,

[0033] The interception structure includes a sheet-like body and a plurality of strip-shaped convex pieces integrally formed on the sheet-like body, extending radially and arranged circumferentially, wherein the sheet-like body is attached to each surface of the first annular filter plate, and each adjacent strip-shaped convex piece defines a microchannel allowing fluid to pass through; each strip-shaped convex piece is divided into a plurality of convex piece units, and the plurality of convex piece units can be deformed in the width direction of the microchannel;

[0034] The disturbance component is a plurality of convex strips formed on each surface of the second annular filter plate and extending radially and arranged circumferentially, and the number of the convex strips is less than the number of the strip-shaped convex strips;

[0035] When the first filter plate rotates relative to the second filter plate, the convex strip passes through the strip-shaped protrusion and contacts the top of the strip-shaped protrusion when passing through the strip-shaped protrusion, thereby forcing the strip-shaped protrusion to swing.

[0036] Preferably, the plurality of lug units on each of the strip-shaped lugs are divided and formed by a plurality of through grooves, and the depth of the through grooves is smaller than the height of the strip-shaped lugs.

[0037] Preferably,

[0038] The thickness of the radially inner and radially outer edge regions of the first annular filter plate and the second annular filter plate is smaller than the thickness of the middle region;

[0039] A plurality of convex components arranged circumferentially are arranged on two surfaces of the edge region of the first annular filter plate, and the convex components include a hard component with a ball head for contacting the second annular filter plate and an elastic component connected to the bottom of the hard component;

[0040] The surface of the edge region of the second annular filter plate is configured as a hardened surface.

[0041] Preferably,

[0042] The lower part of the cavity is provided with a mounting plate, the lower part of the inner retaining cylinder forms a flange, and the flange is attached to the mounting plate;

[0043] The mounting plate and the bottom of the shell define a water outlet cavity, the water outlet is formed at the bottom of the water outlet cavity, the inner retaining tube has a water outlet sleeve extending into the water outlet cavity, and the water outlet sleeve is sleeved with a first lock nut.

[0044] Preferably, the spraying mechanism includes a plurality of spray pipes, which are circumferentially arranged on the inner side of the inner retaining tube; the tube wall of the spray pipe is provided with spray holes arranged at intervals along the axial direction; the spray pipe extends from the bottom of the water outlet jacket into the inner retaining tube.

[0045] Preferably, the spray cleaning mechanism further comprises an annular component having an annular cavity, and the annular component is sleeved outside the water outlet jacket; wherein:

[0046] The water outlet sleeve is provided with a plurality of circumferentially arranged notches from the bottom, the inner wall of the annular component is provided with a plurality of circumferentially arranged interfaces, the elbows at the lower end of the injection pipe are correspondingly attached to the interfaces, and the notches avoid the elbows so that the annular component can be sleeved on the water outlet sleeve and locked by a second lock nut.

[0047] Preferably, a sewage outlet is provided on the installation plate, and a sewage pipe is led out from the sewage outlet.

[0048] The beneficial effects of the vertical filtering device provided by the present invention are:

[0049] 1. The vertical filtering device of the present invention can significantly improve the cleaning efficiency of the filter element by rotating all first annular filter plates relative to adjacent second annular filter plates and cooperating with the disturbance component and the interception structure.

[0050] 2. The vertical filter device of the present invention provides a preferred interception structure that can significantly increase the filter element's storage capacity for particulate matter and significantly reduce the initial throttling pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the embodiments of the invention. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0052] Figure 1 This is a main cross-sectional view of the vertical filtering device provided by the present invention.

[0053] Figure 2 It is a schematic diagram of the three-dimensional structure of the retaining component in the vertical filtering device provided by the present invention.

[0054] Figure 3It is a three-dimensional structural schematic diagram of the assembly relationship between the retaining component, the driving disk and the filter element in the vertical filtering device provided by the present invention.

[0055] Figure 4 It is a schematic diagram of the three-dimensional structure of the filter element in the vertical filtering device provided by the present invention.

[0056] Figure 5 It is a schematic diagram of the three-dimensional structure of the first annular filter plate in the filter element of the vertical filtering device provided by the present invention (only a part of the interception structure is shown).

[0057] Figure 6 It is a schematic diagram of the three-dimensional structure of the second annular filter plate in the filter element in the vertical filtering device provided by the present invention.

[0058] Figure 7 This is a state view when the disturbance component passes through the protruding piece unit of the interception structure.

[0059] Figure 8 It is a cross-sectional view of a first annular filter plate and a second annular filter plate in a stacked state.

[0060] Reference numerals:

[0061] 10-housing; 11-external cavity; 12-inner cavity; 13-water inlet; 14-water outlet; 15-drainage outlet; 151-drainage pipe; 16-mounting plate; 17-water outlet cavity; 20-filter element; 21-first annular filter disc; 211-first fitting protrusion; 22-second annular filter disc; 221-second fitting protrusion; 23-convex component; 231-hard component; 232-elastic component; 31-outer retaining cylinder; 311-inner retaining rib; 3111-first fitting groove; 312-grid; 32-inner retaining cylinder; 321-outer retaining rib; 3211-second fitting groove; 322-grid; 323-flange; 324-water outlet sleeve; 325-notch; 326-first lock nut; 327-second lock nut; 40-axial force mechanism; 50-torsion drive mechanism; 51-rotation drive; 52-rotating shaft; 53-driven component; 531-driving disk; 5311-third mating protrusion; 532-driven body; 54-spring; 551-first transmission gear; 552-second transmission gear; 60-spraying mechanism; 61-spray pipe; 62-annular component; 71-interception structure; 711-sheet body; 712-strip protrusion; 7121-protrusion unit; 7122-through groove; 713-microchannel; 72-disturbance component. DETAILED DESCRIPTION

[0062] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0063] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

[0064] The embodiment of the present invention discloses a vertical filtering device, which can be used to filter particles in sewage. The vertical filtering device is particularly suitable for filtering particles in water during agricultural drip irrigation to prevent particles in water from blocking drip irrigation holes of drip irrigation pipes.

[0065] like Figure 1 As shown, the vertical filtering device of the present invention includes: a housing 10, a retaining component, a filter element 20, a spraying mechanism 60, an axial force applying mechanism 40, a torsional force applying mechanism, a pressure sensor (not shown) for detecting the pressure of water before and after filtration, and a control module (not shown) for controlling related components based on the pressure detected by the pressure sensor.

[0066] The housing 10 is surrounded by a columnar cavity by a top, a bottom and a side wall. A water inlet 13, a water outlet 14 and a sewage outlet 15 are arranged on the housing 10. A mounting plate 16 is horizontally placed at the lower part of the cavity. The mounting plate 16 and the bottom of the housing 10 define a water outlet cavity 17. The filter element 20 is formed by stacking a plurality of annular filter sheets in the axial direction. Therefore, the overall shape of the filter element 20 is a cylindrical shape. The filter element 20 is placed in the columnar cavity and is substantially coaxial with the cavity. Thus, the filter element 20 divides the cavity into an outer cavity 11 located radially outside and an inner cavity 12 located radially inside. The water inlet 13 is arranged at the lower part of the side wall and radially penetrates to the outer cavity 11. The water outlet 14 is arranged at the bottom of the water outlet cavity 17 and communicates with the inner cavity 12. In this way, the water to be filtered enters the outer cavity 11 through the water inlet 13, and under the action of pressure, radially passes through the filter element 20 and enters the inner cavity 12. When passing through the filter element 20, the filter element 20 filters the water to intercept particulate matter in the water. The filtered water that enters the inner cavity 12 flows downward, passes through the water outlet cavity 17, and then flows out from the water outlet 14.

[0067] The filter element 20 is disposed in the housing 10 by means of a retaining member, which not only retains the filter element 20, but also has other beneficial effects on the filter element 20 (described later). Figures 2 to 4 Combined with Figure 1 As shown, the retaining component includes an outer retaining cylinder 31 and an inner retaining cylinder 32. The outer retaining cylinder 31 and the inner retaining cylinder 32 are coaxially arranged and the outer retaining cylinder 31 is located outside the inner retaining cylinder 32. The outer retaining cylinder 31 and the inner retaining cylinder 32 define an annular installation space, and the filter element 20 is placed in the annular space as a whole; the outer retaining cylinder 31 and the inner retaining cylinder 32 are slidably matched at the lower end so that the outer retaining cylinder 31 can rotate relative to the inner retaining cylinder 32; the outer retaining cylinder 31 and the inner retaining cylinder 32 both have a plurality of axially arranged grids 312, 322 ( Figures 2 to 4 Only part of the grille is shown), each two adjacent grilles define a strip-shaped hollow portion, which is used to allow water to pass through, and the width of the grille is minimized to reduce the resistance of the two retaining tubes to water; the lower part of the inner retaining tube 32 has a flange 323, and a water outlet sleeve 324 is provided below the flange 323. The water outlet sleeve 324 passes through the mounting plate 16 and extends into the water outlet cavity 17, so that the water entering the inner retaining tube 32 after filtration flows into the water outlet cavity 17 through the water outlet sleeve 324, and flows out from the water outlet cavity 17 through the water outlet 14. The flange 323 is attached to the mounting plate 16, and a key structure is provided between the flange 323 and the mounting plate 16 to limit the rotation of the inner retaining tube 32. A first lock nut 326 is provided on the water outlet sleeve 324, and the first lock nut 326 is used to lock the water outlet sleeve 324, thereby achieving fixed installation of the inner retaining tube 32.

[0068] The outer retaining tube 31 has a plurality of inner retaining ribs 311 located radially inside, extending axially and arranged circumferentially; each inner retaining rib 311 is provided with a first mating groove 3111 extending axially and opening toward the radial inside; the inner retaining tube 32 has a plurality of outer retaining ribs 321 located radially outside, extending axially and arranged circumferentially; each outer retaining rib 321 is provided with a second mating groove 3211 extending axially and opening toward the radial outside.

[0069] The annular filter disc includes a first annular filter disc 21 and a second annular filter disc 22, which are coaxial and alternately stacked with each other; the radially outer peripheral surface of the first annular filter disc 21 has a plurality of first fitting protrusions 211 arranged circumferentially; the radially inner peripheral surface of the second annular filter disc 22 has a plurality of second fitting protrusions 221 arranged circumferentially. When assembling the filter element 20, the plurality of first fitting protrusions 211 of the first annular filter disc 21 slide into the plurality of first fitting grooves 3111 from the upper end of the outer retaining tube 31, respectively, and the plurality of second fitting protrusions 221 of the second annular filter disc 22 slide into the plurality of second fitting grooves 3211 from the upper end of the outer retaining tube 31, respectively. In this way, all first annular filter plates 21 can rotate with the outer retaining tube 31 through the cooperation between the first fitting groove 3111 and the first fitting protrusion 211, and all second annular filter plates 22 are restricted from rotating through the cooperation between the second fitting groove 3211 and the second fitting protrusion 221, so that each first annular filter plate 21 can rotate relative to the second annular filter plate 22 adjacent thereto.

[0070] like Figures 5 to 7 As shown, an interception structure 71 and a disturbance component 72 are provided between each adjacent first annular filter plate 21 and second annular filter plate 22. Specifically, the interception structure 71 is arranged on the surface of the first annular filter plate 21, and the disturbance component 72 is arranged on the surface of the second annular filter plate 22. Therefore, both surfaces of the first annular filter plate 21 have the interception structure 71, and both surfaces of the second annular filter plate 22 have the disturbance component 72. The function of the interception structure 71 is: when the first annular filter plate 21 and the second annular filter plate 22 are maintained at a small distance for filtering, the interception structure 71 intercepts (or captures) particles in the water passing through it, so that the filter element 20 performs filtering. The function of the disturbance component 72 is: when the first annular filter plate 21 and the second annular filter plate 22 are maintained at a larger distance for cleaning the filter element 20, the disturbance component 72 rotates with the first annular filter plate 21 relative to the second annular filter plate 22, so that the disturbance component 72 passes through the interception structure 71, thereby separating the particulate matter attached to the interception structure 71 from the interception structure 71 or reducing the adhesion force.

[0071] like Figure 1As shown, the axial force-applying component is disposed at the top of the housing 10, and is used to apply an axial force to the top of the filter element 20, so as to bring the annular filter sheets closer together and switch the filter element 20 to the filtering state. After the axial force-applying component cancels the axial force, the annular filter sheets move away from each other and switch the filter element 20 to the cleaning state. When the filter element 20 needs to be cleaned, the torsion drive mechanism 50 drives the outer retaining cylinder 31 to rotate, thereby driving all the first annular filter sheets 21 of the filter element 20 to rotate.

[0072] The present invention provides a preferred matching structure of a torsional drive mechanism 50 and an axial force applying mechanism 40, such as Figure 1 Combined with Figure 3As shown, specifically, a linear drive such as a linear motor or an electric cylinder is used as an axial force applying mechanism 40, and the torsional drive mechanism 50 includes: a rotational drive 51 such as an electrode, a rotating shaft 52, a driven component 53, a first transmission gear 551, a second transmission gear 552 and a spring 54. The linear drive and the rotary drive 51 are both arranged at the top of the shell 10; the rotating shaft 52 is connected to the linear drive and can rotate relative to the linear drive, the first transmission gear 551 is sleeved on the rotating shaft 52 and can slide axially along the rotating shaft 52; the second transmission gear 552 is connected to the rotary driver 51 and meshes with the first transmission gear 551, and the spring 54 is used to push the first transmission gear 551 upward; the driven component 53 includes a driven body 532 with a cylindrical surface and a driving disk 531 detachably arranged at the lower end of the driven body 532, the upper end of the driven body 532 is connected to the rotating shaft 52, and the lower end of the driven body 532 extends into the shell 10; the radial outer peripheral surface of the driving disk 531 has a plurality of third mating protrusions 5311 arranged circumferentially, and the plurality of third mating blocks of the driving disk 531 slide into the plurality of first mating grooves 3111 from the upper end of the outer retaining cylinder 31. In this way, when the filter element 20 needs to be switched to the filtering state, the linear drive is used to drive the rotating shaft 52 to move downward to drive the driven component 53 to move downward, so that the driving disk 531 is pressed against the annular filter sheet on the top layer of the filter element 20. Since all the annular filter sheets are slidably matched with the two retaining cylinders through the fitting grooves and the fitting protrusions, the annular filter sheets are pressed against each other by the driving disk 531 and can be filtered. When the filter element 20 needs to be switched to the cleaning state, the linear drive is used to drive the rotating shaft 52 It moves upward to drive the driven component 53 to move upward, thereby releasing the pressure on the filter element 20 by the driving disk 531. Then, the rotating driver 51 drives the rotating shaft 52 to rotate by means of the engagement of the first transmission gear 551 and the second transmission gear 552, thereby driving the driven component 53 to rotate. The driving disk 531 rotates with the driven component 53 and drives the outer retaining cylinder 31 to rotate through the cooperation of the mating groove and the mating protrusion, thereby driving all the first annular filter plates 21 to rotate relative to all the second annular filter plates 22. The advantage of the above-mentioned preferred matching structure of the torsional drive mechanism 50 and the axial force applying mechanism 40 is that the rotating shaft 52 serves as both a component for applying axial force and a component for applying torsional force, thanks to the fact that the first transmission gear 551 and the rotating shaft 52 are configured to be only able to slide and are restricted from relative rotation (through key matching) and the spring 54 always pushes the first transmission gear 551 upward so that the first transmission gear 551 and the second transmission gear 552 are always in a meshing state; the driving disk 531 is also configured to have a structure with a mating protrusion (third mating protrusion 5311), and the driving disk 531 extends from the top into the outer retaining cylinder 31 and the inner retaining cylinder 32, thereby avoiding the need to separately configure a matching structure on the outer retaining cylinder 31 for driven rotation.

[0073] like Figure 1 As shown, the spraying mechanism 60 is arranged in the inner retaining cylinder 32. When the filter element 20 needs to be cleaned, the spraying mechanism 60 is used to spray the filtered water radially outward to clean the filter element 20. The cleaning timing of the filter element 20 is determined by the pressure difference between the upstream pressure of the water inlet 13 and the downstream pressure of the water outlet 14. For this purpose, a first pressure sensor (not shown) is installed on the pipeline upstream of the water inlet 13 to collect the upstream pressure, and a second pressure sensor (not shown) is installed on the pipeline downstream of the water outlet 14 to collect the downstream pressure. When the pressure difference collected by the two pressure sensors is greater than a preset value, it indicates that the filter element 20 is blocked by particulate matter to the extent that cleaning is required. The control module (not shown) controls the above-mentioned axial force mechanism 40, the torsion drive mechanism 50 and the spray mechanism to operate, and controls the reverse flow of the fluid.

[0074] The working process of the above-mentioned vertical filtering device is introduced below.

[0075] During the filtering process using the filter element 20, the axial force applied by the axial force applying mechanism 40 keeps the filter element 20 in a filtering state. At this time, the water to be filtered enters the outer cavity 11 through the water inlet 13, and enters the inner cavity 12 from the outer cavity 11 through the intercepting structure 71 of the filter element 20 under the action of pressure. The water entering the inner cavity 12 enters the water outlet cavity 17 through the water outlet sleeve 324 at the lower end of the inner retaining cylinder 32, and then flows out from the water outlet 14.

[0076] After the pressure difference between the downstream and upstream exceeds the preset value, the control module controls the axial force mechanism 40 to move the annular filter plates of the filter element 20 away from each other, thereby switching the filter element 20 to a cleaning state. Then, the control module controls the spray mechanism 60 to spray filtered water between each two adjacent annular filter plates of the filter element 20 to remove particulate matter attached to the interception structure 71. Then, the control module controls the spray mechanism 60 to stop, and controls the filtered water to enter the inner cavity 12 from the water outlet 14, and allows the water to radially pass through the gap between each two adjacent annular filter plates for reverse cleaning of the interception structure 71.

[0077] The timing for the control module to control the start and stop of the torsion drive mechanism 50 is preferably before the spray mechanism 60 is started and after the reverse cleaning is completed, that is, when the spray mechanism 60 has not yet started, the torsion drive mechanism 50 drives the outer retaining sleeve to rotate to drive all the first annular filter plates 21 to rotate relative to the second annular filter plates 22, so that the disturbance component 72 disturbs the interception structure 71. The advantage of the disturbance action in conjunction with the spray mechanism 60 is that the area that the fluid sprayed by the spray mechanism 60 cannot reach can be separated from the interception structure 71 or the adhesion force can be reduced through the disturbance action, and stubborn particles (particles stuck in the interception structure 71) can be removed. The advantage of the disturbance action in conjunction with the reverse cleaning process is that it can make up for the defect of difficulty in separating particles from the interception structure 71 due to insufficient fluid flow rate during the reverse cleaning process.

[0078] Preferably, when the distance between the annular filter sheets has not yet reached the maximum distance, the outer retaining cylinder 31 is driven to rotate by the torsion drive mechanism 50. The maximum distance means that the spraying mechanism 60 sprays fluid only when the gap between the annular filter sheets reaches the maximum distance. In this way, the disturbance effect of the disturbance component 72 is more conducive to removing particulate matter.

[0079] After the vertical filtering device stops running, the sewage outlet 15 can be opened, and the sewage at the bottom of the shell 10 can be discharged through the sewage outlet 15 and along the sewage pipe 151 leading from the sewage outlet 15.

[0080] The present invention provides a spray cleaning mechanism 60 of a preferred structure, such as Figure 1 As shown, the spraying mechanism 60 includes a plurality of spray pipes 61 and an annular component 62. Specifically, the plurality of spray pipes 61 are circumferentially arranged on the inner side of the inner retaining tube 32; the tube wall of the spray pipe 61 is provided with spray holes arranged at intervals along the axial direction; the spray pipe 61 extends from the bottom of the water outlet sleeve 324 into the inner retaining tube 32; the annular component 62 is sleeved on the outside of the water outlet sleeve 324; the water outlet sleeve 324 is provided with a plurality of circumferentially arranged notches 325 from the bottom, and a plurality of circumferentially arranged interfaces are provided on the inner wall of the annular component 62, the elbow at the lower end of the spray pipe 61 is correspondingly attached to the interface, and the notch 325 avoids the elbow so that the annular component 62 can be sleeved on the water outlet sleeve 324 and locked by the second lock nut 327. The advantage of the spray mechanism 60 of this preferred structure is that the annular cavity of the annular component 62 can centrally supply water to each injection pipe 61 and has a fixing effect on each injection pipe 61, and the notch 325 on the water outlet sleeve 324 can be fixed on the water outlet sleeve 324 by avoiding the injection pipe 61.

[0081] Another key point of the present invention is to provide an interception structure 71 and a disturbance component 72 of a preferred structure, such as Figures 5 to 7As shown, specifically, the interception structure 71 includes a sheet-like body 711 and a plurality of strip-shaped convex pieces 712 integrally formed on the sheet-like body 711, extending radially and arranged circumferentially. The sheet-like body 711 is attached to each surface of the first annular filter plate 21. A microchannel 713 for allowing fluid to pass is defined between each adjacent strip-shaped convex piece 712. The thickness of such strip-shaped convex piece 712 is much smaller than the width of the microchannel 713. Each strip-shaped convex piece 712 is divided into a plurality of convex piece units 7121, and the plurality of convex piece units 7121 can be deformed in the width direction of the microchannel 713. The above structure of the interception structure 71 can be integrally injection-molded by a high molecular polymer material by means of a stamping die. The plurality of convex piece units 7121 of each strip-shaped convex piece 712 can be deformed (swung) in the width direction and can be reset after deformation. Preferably, the plurality of protrusion units 7121 on each strip-shaped protrusion 712 are divided and formed by a plurality of through grooves 7122 , and the depth of the through grooves 7122 is smaller than the height of the strip-shaped protrusion 712 to improve the restoring ability of the protrusion units 7121 after deformation.

[0082] The disturbance component 72 is a plurality of convex strips formed on each surface of the second annular filter plate 22, extending radially and arranged circumferentially, the number of the convex strips is much smaller than the number of the strip-shaped convex strips 712, and the convex strips have greater rigidity than the convex strip units 7121. The convex strips can be formed by directly processing the surface of the second annular filter plate 22, or can be attached to the surface of the second annular filter plate 22 in the same manner as the interception structure 71.

[0083] When the filter element 20 switches to the filtering state, the water to be filtered flows from the radial outer end to the radial inner end of each microchannel 713. Under the action of water pressure, the particles squeeze a pair of protrusion units 7121 on both sides of the microchannel 713, causing the pair of protrusion units 7121 to deform, while the other pair of protrusion units 7121 adjacent to the deformed pair of protrusion units 7121 and divided by the through groove 7122 are hardly deformed, so that a step structure is formed between the two pairs of protrusion units 7121, and the particles are blocked at the step structure, thereby achieving interception of the particles.

[0084] The significant advantages of the interception structure 71 in the filtration process are: because the thickness of the strip protrusion 712 is much smaller than the thickness of the microchannel 713, the flow cross-section of all microchannels 713 allowing fluid to pass through is significantly larger than the flow cross-section of the prismatic groove in the prior art, and therefore, the initial throttling pressure of the filter element 20 is relatively small; and the protrusion unit 7121 is adaptively deformed to be able to intercept particulate matter in a larger particle size range, and therefore, the storage capacity of the filter element 20 is relatively strong.

[0085] like Figure 7As shown, when the filter element 20 is switched to the cleaning state and the first annular filter plate 21 rotates relative to the second annular filter plate 22, the disturbance component 72 passes through the microchannel 713 and each convex unit 7121 of each strip convex plate 712 alternately. Since the stiffness of the disturbance component 72 is greater than the stiffness of the convex unit 7121, the convex unit 7121 is forced to deform when the disturbance component 72 passes through the convex unit 7121, and then the convex unit 7121 is reset. Therefore, on the one hand, when the disturbance component 72 passes through the microchannel 713, some particles in the microchannel 713 can be removed. On the other hand, the swinging action of the convex unit 7121 due to deformation and reset is conducive to reducing the adhesion of the particles and the clamping effect on the particles, thereby facilitating the removal of the particles.

[0086] In some preferred structures of the filter element 20, such as Figure 5 and Figure 8 As shown, the thickness of the radially inner and radially outer edge regions of the first annular filter disc 21 and the second annular filter disc 22 is less than the thickness of the middle region; the two surfaces of the edge region of the first annular filter disc 21 are arranged with a plurality of circumferentially arranged protrusions 23, and the protrusions 23 include a hard component 231 with a ball head for contacting the second annular filter disc 22 and an elastic component 232 connected to the bottom of the hard component 231; the surface of the edge region of the second annular filter disc 22 is configured as a hardened surface. Preferably, the elastic component 232 is an elastic rubber column, the hard component 231 is made of stainless steel, and the ball head is chrome-plated, and the hardened surface of the edge region of the second annular filter disc 22 is formed by chrome plating. The advantages of the protruding component are: while supporting the two adjacent annular filter plates, it also avoids closing the radial ports of the interception structure 71 and significantly reduces the resistance or wear generated by the relative movement of the two annular filter plates; a more significant advantage is: when filtering is required, the elastic component 232 of the protruding component 23 will adapt to the axial force and retract to meet the distance requirements of the annular filter plates for filtering; and when cleaning is required, as the axial force is withdrawn, the elastic component 232 of the protruding component 23 automatically increases the distance between the annular filter plates through elastic resetting.

[0087] In addition, although exemplary embodiments have been described in the present invention, the scope includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., various embodiments intersecting schemes), adaptations or changes. The elements in the claims will be interpreted broadly based on the language adopted in the claims, and are not limited to the examples described in this specification or during the implementation of this application, and their examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0088] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, a person of ordinary skill in the art can use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be grouped together to simplify the present invention. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the present invention may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently used as a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of the present invention should be determined with reference to the attached claims and the full scope of equivalent forms granted by these claims.

[0089] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A vertical filtering device, characterized in that: include: A shell having a water inlet, a water outlet, and a cylindrical cavity; A filter element, which is formed by stacking a plurality of annular filter sheets in an axial direction, the filter element is arranged in the housing to divide the cavity into an outer cavity located radially outward and an inner cavity located radially inward, the water inlet is connected to the outer cavity, and the water outlet is connected to the inner cavity; an interception structure for intercepting particulate matter is arranged between each two adjacent annular filter sheets; A spray cleaning mechanism, which performs radial spray cleaning on the interception structure based on the pressure difference between the outer cavity and the inner cavity; An axial force applying mechanism, which applies an axial force to the filter element so that each two adjacent annular filter sheets are brought closer to each other for intercepting particles and each two adjacent annular filter sheets are moved away from each other for cleaning the interception structure; A torsion drive mechanism; wherein: The annular filter plate comprises a first annular filter plate and a second annular filter plate; the first annular filter plate and the second annular filter plate are coaxial and alternately stacked with each other; A disturbance component is provided on a side of the first annular filter plate or the second annular filter plate facing the interception structure; The first annular filter plate and the second annular filter plate are configured as follows: The torsion drive mechanism provides power to rotate all the first annular filter plates relative to all the first annular filter plates, so that the disturbance component passes through the interception structure when rotating with the first annular filter plates to separate the particles from the interception structure or assist in separating the particles.

2. The vertical filtering device according to claim 1, characterized in that: The vertical filtering device also includes a retaining component; The retaining component comprises an inner retaining tube and an outer retaining tube coaxially arranged and located outside the inner retaining tube; the inner retaining tube and the outer retaining tube are both defined by axially arranged grids to form a strip-shaped hollow portion for fluid to pass through; The outer retaining tube has a plurality of inner retaining ribs located radially inward, extending axially and arranged circumferentially; each of the inner retaining ribs is provided with a first fitting groove extending axially and opening toward the radial inward; the inner retaining tube has a plurality of outer retaining ribs located radially outward, extending axially and arranged circumferentially; each of the outer retaining ribs is provided with a second fitting groove extending axially and opening toward the radial outward; The first annular filter has a plurality of first mating protrusions arranged circumferentially on its radially outer circumferential surface; the second annular filter has a plurality of second mating protrusions arranged circumferentially on its radially inner circumferential surface; wherein: The first engaging protrusions of the first annular filter plate slide into the first engaging grooves from the end of the outer retaining tube respectively and correspondingly so that all the first annular filter plates can rotate with the outer retaining tube; The plurality of second engaging protrusions of the second annular filter plate slide into the plurality of second engaging grooves correspondingly from the end of the outer retaining tube respectively so as to limit the rotation of all the second annular filter plates through the inner retaining tube.

3. The vertical filtering device according to claim 2, characterized in that: The axial force applying mechanism is a linear drive; The torsion drive mechanism includes a rotary driver, a rotating shaft, a driven component, a first transmission gear, a second transmission gear and a spring; The linear drive and the rotary drive are both arranged on the top of the housing; the rotating shaft is connected to the linear drive and can rotate relative to the linear drive, the first transmission gear is sleeved on the rotating shaft and can slide along the axial direction of the rotating shaft; the second transmission gear is connected to the rotary drive and meshes with the first transmission gear, and the spring is used to push the first transmission gear upward; The driven component comprises a driven body having a cylindrical surface and a driving disk detachably arranged at the lower end of the driven body, the upper end of the driven body is connected to the rotating shaft, and the lower end of the driven body extends into the housing; wherein: The radially outer peripheral surface of the driving disk is provided with a plurality of third engaging protrusions arranged circumferentially, and the plurality of third engaging blocks of the driving disk slide into the plurality of first engaging grooves correspondingly from the upper end of the outer retaining tube.

4. The vertical filtering device according to claim 1, characterized in that: The interception structure includes a sheet-like body and a plurality of strip-shaped convex pieces integrally formed on the sheet-like body, extending radially and arranged circumferentially, wherein the sheet-like body is attached to each surface of the first annular filter plate, and each adjacent strip-shaped convex piece defines a microchannel allowing fluid to pass through; each strip-shaped convex piece is divided into a plurality of convex piece units, and the plurality of convex piece units can be deformed in the width direction of the microchannel; The disturbance component is a plurality of convex strips formed on each surface of the second annular filter plate and extending radially and arranged circumferentially, and the number of the convex strips is less than the number of the strip-shaped convex strips; When the first filter plate rotates relative to the second filter plate, the convex strip passes through the strip-shaped protrusion and contacts the top of the strip-shaped protrusion when passing through the strip-shaped protrusion, thereby forcing the strip-shaped protrusion to swing.

5. The vertical filtering device according to claim 4, characterized in that: The plurality of convex unit on each of the strip-shaped convex pieces are divided and formed by a plurality of through grooves, and the depth of the through grooves is smaller than the height of the strip-shaped convex piece.

6. The vertical filtering device according to claim 1, characterized in that: The thickness of the radially inner and radially outer edge regions of the first annular filter plate and the second annular filter plate is smaller than the thickness of the middle region; A plurality of convex components arranged circumferentially are arranged on two surfaces of the edge region of the first annular filter plate, and the convex components include a hard component with a ball head for contacting the second annular filter plate and an elastic component connected to the bottom of the hard component; The surface of the edge region of the second annular filter plate is configured as a hardened surface.

7. The vertical filtering device according to claim 1, characterized in that: The lower part of the cavity is provided with a mounting plate, the lower part of the inner retaining cylinder forms a flange, and the flange is attached to the mounting plate; The mounting plate and the bottom of the shell define a water outlet cavity, the water outlet is formed at the bottom of the water outlet cavity, the inner retaining tube has a water outlet sleeve extending into the water outlet cavity, and the water outlet sleeve is sleeved with a first lock nut.

8. The vertical filtering device according to claim 7, characterized in that: The spray washing mechanism includes a plurality of spray pipes, which are circumferentially arranged on the inner side of the inner retaining tube; the tube wall of the spray pipe is provided with spray holes arranged at intervals along the axial direction; the spray pipe extends from the bottom of the water outlet sleeve into the inner retaining tube.

9. The vertical filtering device according to claim 8, characterized in that: The spray cleaning mechanism also includes an annular component having an annular cavity, and the annular component is sleeved outside the water outlet sleeve; wherein: The water outlet sleeve is provided with a plurality of circumferentially arranged notches from the bottom, the inner wall of the annular component is provided with a plurality of circumferentially arranged interfaces, the elbows at the lower end of the injection pipe are correspondingly attached to the interfaces, and the notches avoid the elbows so that the annular component can be sleeved on the water outlet sleeve and locked by a second lock nut.

10. The vertical filtering device according to claim 7, characterized in that: The installation plate is provided with a sewage outlet, and a sewage pipe is led out from the sewage outlet.

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