Novel high-flow static microfilter

Abstract

The utility model discloses a novel high-flow static microfilter which comprises an upper bin, a lower bin, a right bin, a public cover plate and an automatic control box, the upper bin comprises a left partition bin and a filter bin; the filter bin is formed by connecting a plurality of microfiltration units in parallel; the lower bin and the right bin are open cuboids, and all the bins are connected according to specific space layout and size design; the public cover plate is sealed, the automatic control box comprises a liquid level sensor and a proximity switch, and intelligent control is achieved; the device works in two states: during normal filtration, the control circuit opens the main water inlet valve and the main water outlet valve, aquaculture sewage is shunted and filtered, and purified water flows into the lower bin and the right bin and then is discharged; during backwashing, the stages of preparation, washing, pollution discharge and recovery are sequentially carried out, and the filter screen is washed by controlling the start and stop of each valve, pump and elevator, so that the efficient and stable operation of the microfilter is ensured. The utility model has the advantages of simple structure, large flow, no blockage and high cost performance.

Description

TECHNICAL FIELD

[0001] The utility model relates to microfilter technical field, more specifically relates to a novel large flow static microfilter. BACKGROUND

[0002] As a kind of filtration recovery, solid-liquid separation device, microfilter is mainly used for sewage filtration treatment, and its common application scenarios include the first stage filtration of raw water to filter out large-particle solid impurities, suspended algae and the like, and the first stage coarse filtration link of closed circulation purification.

[0003] The existing commonly used rotary drum type microfilter is composed of water inlet tank, precision filter, rotating disc, motor driving device and backwash pump, etc., and its filtration principle is that micro-porous filter screen is fixed on rotary drum, aquaculture water flows into rotary drum, solid waste is intercepted by filter screen when rotary drum rotates, and water penetrates filter screen to enter the outside of rotary drum, to realize solid-liquid separation. When impurities accumulate to a certain extent, rotary drum rotates to clean filter screen in combination with backwash water force, but this microfilter has many problems: first, filter screen is fixed on rotary drum, only lower part of filter screen in water participates in filtration, upper part of filter screen is not utilized, and filter screen not participating in filtration is also washed during backwash, which wastes electric energy and clean water; second, transmission components such as belt, chain and gear are prone to wear, elongation or breakage due to frequent rotation and friction and fatigue; third, sealing element is prone to wear due to corrosion and aging, leading to sealing failure; fourth, production requires high processing precision and assembly technology, such as strict control of cylindricality and concentricity of rotary drum, which increases manufacturing cost.

[0004] The existing Chinese invention patent CN118949550A discloses a static microfilter, which is composed of water filtering unit, water collecting unit and backwash device; water filtering unit has water filtering tank, water filtering plate and dirt guide plate; water collecting unit covers dirt collecting tank and clean water tank; backwash device includes nozzle, nozzle holder, slide rod and other components. This microfilter improves backwash effect to a certain extent through specific design, but since filtration and backwash are performed synchronously, backwash high-pressure water has to pass through a section of water body before reaching water filtering plate, which greatly reduces impact force and makes it difficult to clean stubborn dirt, and part of dirt washed down is prone to flow back with water flow, to block water filtering plate again, so that overall backwash effect is poor, and microfilter is still prone to blockage. UTILITY MODEL CONTENTS

[0005] The utility model discloses in order to solve the deficiency in the prior art, provide a novel large flow static microfilter of large filtration capacity, not easy to block, equipment is simple, filter screen is convenient to replace, and the cost performance is high.

[0006] The utility model discloses in order to realize the above-mentioned purpose adopts the following technical scheme: a novel large flow static microfilter, the whole structure of microfilter includes upper bin, lower bin, right bin, public cover plate and automatic control box, and specific structural relationship is as follows.

[0007] Spatial position layout: the upper bin is directly above the lower bin, and the right bin is on the right side of the upper bin and the lower bin, which together constitute the main spatial framework of the microfiltration machine.

[0008] Size specification: the upper bin and the lower bin are completely consistent in length and width, and the width of the right bin is the same as that of the upper bin and the lower bin, and the height is the sum of the height of the upper bin and the height of the lower bin, which meets the space requirements of different functional areas of the microfiltration machine.

[0009] Connection method: the upper bin, the lower bin and the right bin are fixedly connected in sequence to form a compact and stable whole structure; the common cover plate covers the left part of the upper bin, and the automatic control box is fixed on the right side plate III of the right bin, which together constitute the complete new large-flow static microfiltration machine system.

[0010] The upper bin is composed of a left partition bin and a filter bin.

[0011] The left partition bin is a rectangular cuboid open box surrounded by a front side plate I, a left side plate I, a rear side plate I and a bottom plate I, and a total water inlet is arranged at the middle position of the left side plate I, and a total water inlet valve is arranged on the total water inlet.

[0012] The filter bin is composed of a plurality of microfiltration units connected in parallel, and each microfiltration unit comprises a box body, a lifting assembly, a backwashing assembly, a blowdown assembly, a water pumping assembly and a filter screen assembly, and a common partition plate is arranged between adjacent microfiltration units, and the height and width of the filter bin are the same as those of the left partition bin.

[0013] The lower bin is a rectangular cuboid open box surrounded by a front side plate II, a left side plate II, a rear side plate II, a right side plate II and a bottom plate II, and a water through hole is formed in the middle of the bottom of the right side plate II to communicate with the right bin.

[0014] The right bin is an open rectangular cuboid box surrounded by a front side plate III, a rear side plate III, a right side plate III and a bottom plate III, and a total water outlet is arranged at the middle lower part of the right side plate III and is provided with a total water outlet valve, and a right bin cover plate is arranged at the upper opening of the right bin.

[0015] The cover plate is provided with a transparent observation window, and a plastic sealing strip is arranged on the lower surface of the cover plate, and the plastic sealing strip forms a seal with the upper opening of the microfiltration machine.

[0016] The automatic control box is composed of a single-chip microcomputer or a PLC and a control circuit thereof, an upper water level sensor, a lower water level sensor, an upper proximity switch and a lower proximity switch, wherein the upper water level sensor and the lower water level sensor are arranged on the left side plate IV of the box body, the upper water level sensor is located at the upper edge of the filter screen and is used for monitoring the high water level, and the lower water level sensor is located at the lower edge of the filter screen and is used for monitoring the low water level; the upper proximity switch and the lower proximity switch are installed on the right side plate IV of the box body, the upper proximity switch corresponds to the horizontal position of the initial setting of the parallel sliding block, and the lower proximity switch corresponds to the position of the lowest horizontal position to which the parallel sliding block is lowered, so as to monitor the position of the parallel sliding block.

[0017] The microfiltration unit is composed of a box body, a lifting assembly, a backwashing assembly, a blowdown assembly, a water pumping assembly and a filter screen assembly, and the structures of the parts are as follows.

[0018] The frame structure of the box body: the box body is fixedly connected by a front side plate IV, a left side plate IV, a rear side plate IV, a right side plate IV and a bottom plate IV to form an open box body in the shape of a rectangular cuboid.

[0019] The internal structure of the box body: the left support baffle is parallel to the left side plate IV, is located on the right side of the left side plate IV and between the filter screen assemblies, is fixedly connected with the bottom plate IV at the lower part and is fixedly connected with the left side plate IV at the upper part through the left support flat plate, and plays a supporting and separating role; the right front support baffle is parallel to the right side plate IV and is fixedly connected with the front side plate IV perpendicularly, is fixedly connected with the bottom plate IV at the lower part, and enhances the structural stability of the front part of the box body; the right rear support baffle is also parallel to the right side plate IV and is fixedly connected with the rear side plate IV perpendicularly, is fixedly connected with the bottom plate IV at the lower part, and stabilizes the structure of the rear part of the box body; the lower part of the left side plate IV is provided with a blowdown opening and a water inlet hole, the blowdown opening is used for discharging the dirt in the box body that needs to be cleaned, and the middle of the bottom plate IV is provided with a water outlet hole, the water outlet hole is located between the two filter screen assemblies, and the filtered clean water flows into the lower bin through the water outlet hole, so that the clean water is circulated.

[0020] The lifting assembly is composed of a support plate, a screw rod lifter, a trapezoidal screw nut, a parallel sliding block, a straight linear shaft, a sliding bearing and a screw rod bearing seat; the support plate is horizontally arranged, the left end of which is connected with the upper parts of the right front support baffle and the right rear support baffle, and the right end of which is connected with the upper part of the right side plate IV, thereby providing a support structure for the whole assembly; the screw rod lifter is fixed on the upper part of the support plate, the screw rod of which is vertically downward, and the lower end of which is connected with the bottom plate IV through the screw rod bearing seat, thereby serving as a power driving component; the trapezoidal screw nut is located at the middle position of the parallel sliding block, and the screw rod of the screw rod lifter passes through the trapezoidal screw nut, thereby realizing the conversion between the screw rod rotating movement and the parallel sliding block linear movement; the straight linear shafts are vertically and parallel arranged, the lower ends of which are connected with the bottom of the bottom plate IV, and the upper ends of which are connected with the lower part of the support plate, thereby providing a guide for the movement of the parallel sliding block; the sliding bearings are respectively connected with the two ends of the parallel sliding block, and the sliding bearings are sleeved on the straight linear shafts, thereby enabling the parallel sliding block to stably lift along the straight linear shafts.

[0021] The backwashing assembly is composed of a backwashing pipe, a hose, a connecting piece and a backwashing pump, and the specific conditions are as follows: the backwashing pipe is horizontally arranged, is connected with the parallel sliding block through the connecting piece, and can move up and down along with the parallel sliding block; the left and right sides of the backwashing pipe along the length direction are provided with intermittent fine slits, thereby replacing the nozzles, and the slit width is between 0.5-1.5 mm; such a design is helpful to realize uniform and efficient backwashing operation; the water outlet of the backwashing pump is connected with the backwashing pipe through the hose; the backwashing pump is placed in the right bin, thereby providing power for the backwashing operation, enabling the water flow to enter the backwashing pipe through the hose, and then being sprayed out through the fine slits, thereby backwashing the filter screen.

[0022] The pollution discharge assembly is composed of a pollution discharge pipe, a pollution discharge pump and a pollution discharge pump support; the pollution discharge pipe is responsible for discharging sewage, and is connected with the pollution discharge opening in the lower part of the left side plate IV of the box body; the pollution discharge pump is fixed on the rear side plate IV of the box body through the pollution discharge pump support, and the water inlet of the pollution discharge pump is connected with the pollution discharge pipe; the pollution discharge pump provides power for the pollution discharge, enabling the sewage and dirt in the box body to flow into the pollution discharge opening, enter the pollution discharge pipe, and then be discharged from the water outlet of the pollution discharge pump.

[0023] The water pumping assembly is composed of a water pumping pump and a water outlet pipe, and the water pumping pump is placed in the right bin to pump water.

[0024] The filter screen assembly is composed of a left sliding groove, a right sliding groove, a support frame, a filter screen, a pressing strip frame, a pressing screw and a fixed locking screw; two left sliding grooves are vertically fixed on the left and right sides of the left support baffle, and two right sliding grooves are symmetrically fixed on the right front support baffle and the right rear support baffle; the filter screen is pressed between the support frame and the pressing strip frame through the pressing screw; the left and right sides of the support frame are respectively inserted into the left sliding groove and the right sliding groove, and can slide up and down along the sliding grooves; one side of each of the left sliding groove and the right sliding groove is provided with a fixed locking screw, which is used for fixing the position of the support frame.

[0025] The utility model discloses an advantageous effect: the utility model provides a novel high flow static microfilter, equipment simple structure has reduced manufacturing cost, and the utilization rate of filter screen is high, and the filtering capacity is big, and it is not easy to block, and the filter screen assembly is simple and convenient to replace, and is easy to maintain, can also be combined into the microfilter of double microfiltration unit or multiple microfiltration unit, and the beneficial effect is more highlighted. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the structure schematic diagram of the utility model.

[0027] Figure 2 It is the partial structure section view of the utility model.

[0028] Figure 3 It is the partial structure front view section view of the utility model.

[0029] Figure 4 It is the structure overhead section view of the utility model.

[0030] Figure 5 It is the left compartment structure schematic diagram of the utility model.

[0031] Figure 6 It is the lower compartment structure schematic diagram of the utility model.

[0032] Figure 7 It is the right compartment partial structure schematic diagram of the utility model.

[0033] Figure 8 It is the lifting assembly and backflushing assembly structure schematic diagram of the utility model.

[0034] Figure 9 It is the box and filter screen assembly structure schematic diagram of the utility model.

[0035] Figure 10 It is the filter screen assembly structure schematic diagram of the utility model.

[0036] The figure marks are: 1, upper bin, 11, left partition bin, 111, front side plate I, 112, left side plate I, 113, rear side plate I, 114, bottom plate I, 115, total water inlet, 116, total water inlet valve, 12, filter bin, 13, microfiltration unit, 131, box body, 1311, front side plate IV, 1312, left side plate IV, 1312, drain outlet, 1312, sub water inlet hole, 1313, rear side plate IV, 1314, right side plate IV, 1315, bottom plate IV, 1315, drain hole, 1316, left support baffle, 1317, left support flat plate, 1318, right front support baffle, 1319, right rear support baffle, 132, lifting assembly, 1321, support plate, 1322, screw rod lifter, 1323, trapezoidal screw nut, 1324, parallel sliding block, 1325, straight linear guide shaft, 1326, sliding bearing, 1327, screw rod bearing seat, 133, backwashing assembly, 1331, backwashing pipe, 1331, thin gap, 1332, hose, 1333, connecting piece, 1334, backwashing pump, 134, drain assembly, 1341, drain pipe, 1342, drain pump, 1343, drain pump support, 135, water pumping assembly, 1351, water pumping pump, 1352, water outlet pipe, 136, filter screen assembly, 1361, left sliding chute, 1362, right sliding chute, 1363, support frame, 1364, filter screen, 1365, pressing strip frame, 1366, pressing screw, 1367, fixed locking screw, 14, common partition; 2, lower bin, 21, front side plate II, 22, left side plate II, 23, rear side plate II, 24, right side plate II, 25, bottom plate II, 26, water passage hole; 3, right bin, 31, front side plate III, 32, rear side plate III, 33, right side plate III, 34, bottom plate III, 35, total water outlet, 36, total water outlet valve, 37, right bin cover plate; 4, common cover plate, 41, transparent observation window, 42, plastic sealing strip; 5, automatic control box, 51, single-chip microcomputer or PLC and control circuit thereof, 52, upper water level sensor, 53, lower water level sensor, 54, upper proximity switch, 55, lower proximity switch. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the present application will be briefly introduced with reference to the drawings and the description of the embodiments or the prior art. Obviously, the following description of the drawings structure is only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor. It should be noted that the description of these embodiments is used to help understand the present application, but does not constitute a limitation on the present application.

[0038] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0039] In the description of this utility model, it should be understood that the use of terms such as "first" and "second" to define the components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model.

[0040] Example 1: As Figures 1-10 As shown, a novel high-flow static microfiltration machine has an overall structure comprising an upper chamber 1, a lower chamber 2, a right chamber 3, a common cover plate 4, and an automatic control box 5. The specific structural relationships are as follows.

[0041] 1) Spatial layout: Upper compartment 1 is located directly above lower compartment 2, and right compartment 3 is located to the right of upper compartment 1 and lower compartment 2. Together, the three constitute the main spatial structure of the microfiltration machine.

[0042] 2) External dimensions: The upper compartment 1 and the lower compartment 2 are completely identical in length and width. The width of the right compartment 3 is the same as that of the upper compartment 1 and the lower compartment 2, and its height is the sum of the heights of the upper compartment 1 and the lower compartment 2. This size design meets the space requirements of different functional areas of the microfiltration machine.

[0043] 3) Connection method: The upper chamber 1, lower chamber 2 and right chamber 3 are fixedly connected together in sequence to form a tight and stable overall structure; the common cover plate 4 covers the left side of the upper chamber 1, and the automatic control box 5 is fixed on the right side plate III33 of the right chamber 3, together forming a complete new type of high flow static microfiltration machine system.

[0044] The specific structures of each component of the microfiltration machine are as follows.

[0045] 1) Upper compartment 1 consists of left compartment 11 and filter compartment 12.

[0046] 2) The left compartment 11 is a rectangular open box formed by the front side plate I111, the left side plate I112, the rear side plate I113 and the bottom plate I114. The main water inlet 115 is provided in the middle of the left side plate I112, and the main water inlet valve 116 is installed on the main water inlet 115.

[0047] 3) The filter bin 12 is composed of multiple microfiltration units 13 in parallel, and each microfiltration unit 13 comprises a box 131, a lifting assembly 132, a backwashing assembly 133, a blowdown assembly 134, a water pumping assembly 135 and a filter screen assembly 136. Adjacent microfiltration units 13 are provided with a common partition 14. The height and width of the filter bin 12 are the same as those of the left partition bin 11.

[0048] 4) The lower bin 2 is surrounded by the front side plate II21, the left side plate II22, the rear side plate II23, the right side plate II24 and the bottom plate II25 to form a long rectangular open box. The right side plate II24 is provided with a water passage hole 26 in the middle of the bottom to communicate with the right bin 3.

[0049] 5) The right bin 3 is surrounded by the front side plate III31, the rear side plate III32, the right side plate III33 and the bottom plate III34 to form an open rectangular box. The right bin 3 is provided with a total water outlet 35 in the middle lower part of the right side plate III33 and is provided with a total water valve 36. The upper opening of the right bin 3 is provided with a right bin cover plate 37.

[0050] 6) The cover plate 4 is provided with a transparent observation window 41. The lower surface of the cover plate 4 is provided with a plastic sealing strip 42, which forms a seal with the upper opening of the microfiltration machine.

[0051] 7) The automatic control box 5 is composed of a single-chip microcomputer or PLC and its control circuit 51, an upper water level sensor 52, a lower water level sensor 53, an upper proximity switch 54 and a lower proximity switch 55. The upper water level sensor 52 and the lower water level sensor 53 are arranged on the left side plate IV1312 of the box 131. The upper water level sensor 52 is located at the upper edge height of the filter screen 1364 and is used to monitor the high water level. The lower water level sensor 53 is located at the lower edge height of the filter screen 1364 and is used to monitor the low water level. The upper proximity switch 54 and the lower proximity switch 55 are installed on the right side plate IV1314 of the box 131. The upper proximity switch 54 corresponds to the initial set horizontal height position of the parallel sliding block 1324. The lower proximity switch 55 corresponds to the position where the parallel sliding block 1324 is lowered to the set lowest horizontal height, so as to monitor the position of the parallel sliding block 1324.

[0052] The microfiltration unit 13 is composed of a box 131, a lifting assembly 132, a backwashing assembly 133, a blowdown assembly 134, a water pumping assembly 135 and a filter screen assembly 136. The structures of the parts are as follows.

[0053] 1) The frame structure of the box 131: The box 131 is fixedly connected by the front side plate IV1311, the left side plate IV1312, the rear side plate IV1313, the right side plate IV1314 and the bottom plate IV1315 to form a long rectangular open box.

[0054] 2) The internal structure of the box 131 is set as follows: the left support baffle 1316 is parallel to the left side plate IV 1312, is located on the right side of the left side plate IV 1312 and between the filter screen assemblies 136, the lower part is fixedly connected with the bottom plate IV 1315, and the upper part is fixedly connected with the left side plate IV 1312 through the left support flat plate 1317, thereby playing a supporting and separating role; the right front support baffle 1318 is parallel to the right side plate IV 1314 and is fixedly connected with the front side plate IV 1311 perpendicularly, the lower part is fixedly connected with the bottom plate IV 1315, thereby enhancing the structural stability of the front part of the box; the right rear support baffle 1319 is also parallel to the right side plate IV 1314 and is fixedly connected with the rear side plate IV 1313 perpendicularly, the lower part is fixedly connected with the bottom plate IV 1315, thereby stabilizing the structure of the rear part of the box; the lower part of the left side plate IV 1312 is provided with a sewage discharge port 131201 and a water inlet hole 131202, the sewage discharge port 131201 is used for discharging sewage and the like in the box which needs to be cleaned; the middle of the bottom plate IV 1315 is provided with a sewage outlet hole 131501, the sewage outlet hole 131501 is located between the two filter screen assemblies 136, and the purified water filtered through the filter screen flows into the lower bin 2 through the sewage outlet hole 131501, thereby realizing the circulation of the purified water.

[0055] 3) The lifting assembly 132 is composed of the following components: a support plate 1321, a lead screw lifter 1322, a trapezoidal screw nut 1323, a parallel sliding block 1324, a straight linear shaft 1325, a sliding bearing 1326 and a lead screw bearing seat 1327; the support plate 1321 is horizontally arranged, the left end is connected with the upper parts of the right front support baffle 1318 and the right rear support baffle 1319, and the right end is connected with the upper part of the right side plate IV 1314, thereby providing a support structure for the whole assembly; the lead screw lifter 1322 is fixed on the upper part of the support plate 1321, the lead screw is vertically downward, the lower end is connected with the bottom plate IV 1315 through the lead screw bearing seat 1327, thereby serving as a power driving component; the trapezoidal screw nut 1323 is located at the middle position of the parallel sliding block 1324, the lead screw of the lead screw lifter 1322 passes through the middle, thereby realizing the conversion of the rotating motion of the lead screw and the linear motion of the parallel sliding block 1324; the straight linear shaft 1325 is vertically and parallel arranged, the lower end is connected with the bottom of the bottom plate IV 1315, and the upper end is connected with the lower part of the support plate 1321, thereby providing a guide for the movement of the parallel sliding block 1324; the parallel sliding block 1324 is connected with the sliding bearing 1326 at both ends, the sliding bearing 1326 is sleeved on the straight linear shaft 1325, thereby enabling the parallel sliding block 1324 to stably ascend and descend along the straight linear shaft 1325.

[0056] 4) The backwash assembly 133 is composed of a backwash pipe 1331, a hose 1332, a connector 1333 and a backwash pump 1334. The backwash pipe 1331 is horizontally arranged and connected with the parallel sliding block 1324 through the connector 1333, and can move up and down with the parallel sliding block 1324. The left and right sides of the backwash pipe 1331 are provided with intermittent slits 133101 along the length direction, which replace the nozzles and have a width of 1 mm. Such design is helpful to realize uniform and efficient backwash operation. The water outlet of the backwash pump 1334 is connected with the backwash pipe 1331 through the hose 1332. The backwash pump 1334 is placed in the right bin 3 to provide power for backwash operation, so that the water flows into the backwash pipe 1331 through the hose 1332, and is sprayed out through the slits 133101 to backwash the filter screen.

[0057] 5) The blowdown assembly 134 is composed of a blowdown pipe 1341, a blowdown pump 1342 and a blowdown pump support 1343. The blowdown pipe 1341 is connected with the blowdown port 131201 at the lower part of the left side plate IV 1312 of the box body 131 to discharge sewage. The blowdown pump 1342 is fixed on the rear side plate IV 1313 of the box body 131 through the blowdown pump support 1343, and the water inlet of the blowdown pump 1342 is connected with the blowdown pipe 1341. The blowdown pump 1342 provides power to make the sewage and dirt in the box body flow into the blowdown port 131201, and then flow into the blowdown pipe 1341 and be discharged from the water outlet of the blowdown pump 1342.

[0058] 6) The water pumping assembly 135 is composed of a water pumping pump 1351 and a water outlet pipe 1352. The water pumping pump 1351 is placed in the right bin 3 to pump water.

[0059] 7) The filter screen assembly 136 is composed of a left sliding groove 1361, a right sliding groove 1362, a support frame 1363, a filter screen 1364, a pressing strip frame 1365, a pressing screw 1366 and a fixing locking screw 1367. Two left sliding grooves 1361 are vertically fixed on the left and right sides of the left support baffle 1316, and two right sliding grooves 1362 are symmetrically fixed on the right front support baffle 1318 and the right rear support baffle 1319. The filter screen 1364 is pressed between the support frame 1363 and the pressing strip frame 1365 through the pressing screw 1366. The left and right sides of the support frame 1363 are respectively inserted into the left sliding groove 1361 and the right sliding groove 1362, and can slide up and down along the sliding grooves. One side of each of the left sliding groove 1361 and the right sliding groove 1362 is provided with the fixing locking screw 1367 to fix the position of the support frame.

[0060] The automatic control working process of the novel large-flow static microfilter provided by the embodiment includes the working process of the microfilter in the normal filtration state and the backwash state.

[0061] 1) The normal filtration is as follows.

[0062] ①Command and valve opening: the single-chip microcomputer or PLC and its control circuit 51 sends a signal to open the total water inlet valve 116 and the total water outlet valve 36.

[0063] ②Aquaculture wastewater inflow and distribution: the aquaculture wastewater enters the box 131 through the opened total water inlet valve 116, and then encounters the left support baffle 1316, where it is divided into two water flows.

[0064] ③Filtration process: the two water flows flow through two filter screens 1364 respectively, and the pollutants in the wastewater are intercepted by the filter screens, and the filtered clean water flows out through the water outlet hole 131501.

[0065] ④Clean water flow: the clean water flows from the water outlet hole 131501 into the lower bin 2, and then passes through the water hole 26 of the right side plate II 24 of the lower bin 2 into the right bin 3.

[0066] ⑤Finally, it flows out from the total water outlet 35 in the lower part of the right side plate III 33 of the right bin 3 into the subsequent processing unit.

[0067] 2) Backwashing includes the following stages.

[0068] ①Backwashing preparation stage: when the single-chip microcomputer or PLC and its control circuit 51 receives the full water signal of the water level sensor 52, it will immediately perform the following operations: first, close the total water inlet valve 116 and the total water outlet valve 36, and then start the water pump 1351 to draw the filtered clean water in the box 131 through the filter screen 1364 to the outside of the microfilter, so that the water level in the box decreases until the upper part of the filter screen 1364 is at least 10 mm above the water surface.

[0069] ②Backwashing stage: when the upper part of the filter screen 1364 is at least 10 mm above the water surface, start the backwashing pump 1334 to draw the filtered clean water from the right bin 3 through the filter screen 1364, and the clean water enters the backwashing pipe 1331 through the hose 1332, and the backwashing water is inclinedly sprayed from the fine gap 133101 on both sides of the backwashing pipe 1331 to the filter screen 1364 for backwashing operation; start the lead screw elevator 1322 to drive the backwashing pipe 1331 to move downward with the water level, and always maintain a height difference of 5-10 mm between the backwashing pipe 1331 and the water level.

[0070] ③Sewage discharge stage: when the water level in the box 131 decreases to the height set by the lower water level sensor 53, the single-chip microcomputer or PLC and its control circuit 51 sends a signal to open the sewage pump 1342 to discharge the pollutants generated by backwashing the filter screen 1364 through the sewage pipe 1341; when the parallel sliding block 1324 descends to the position of the lower proximity switch 55, the single-chip microcomputer or PLC and its control circuit 51 sends a signal again to start the lead screw elevator 1322 in reverse to raise the backwashing pipe 1331, while continuously performing backwashing.

[0071] ④ Recovery of normal filtration stage: when the backwash pipe 1331 rises to the set upper proximity switch 54, the single-chip microcomputer or PLC and its control circuit 51 sends a signal to first stop the screw rod elevator 1322, and then successively stop the backwash pump 1334 and the water pump 1351, delay for 5 seconds or more, and then close the blowdown pump 1342, thus ending the backwash process, opening the total water inlet valve 116 and the total water outlet valve 36, and the microfiltration machine returns to the normal filtration state.

[0072] The above-described content is only a specific embodiment of the present application, and all other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative labor are within the scope of protection of the present application.

Claims

1. A novel high-flow-rate static microfiltration machine, characterized in that, The overall structure of the microfilter includes an upper chamber (1), a lower chamber (2), a right chamber (3), a common cover plate (4), and an automatic control box (5). The specific structural relationship is as follows: 1) Spatial layout: The upper compartment (1) is located directly above the lower compartment (2), and the right compartment (3) is located to the right of the upper compartment (1) and the lower compartment (2). The three together constitute the main spatial structure of the microfiltration machine. 2) External dimensions: The upper compartment (1) and the lower compartment (2) are completely identical in length and width. The width of the right compartment (3) is the same as that of the upper compartment (1) and the lower compartment (2), and its height is the sum of the heights of the upper compartment (1) and the lower compartment (2). This size design meets the space requirements of different functional areas of the microfiltration machine. 3) Connection method: The upper chamber (1), lower chamber (2) and right chamber (3) are fixedly connected together in sequence to form a tight and stable overall structure; the common cover plate (4) covers the left side of the upper chamber (1), and the automatic control box (5) is fixed on the right side plate III (33) of the right chamber (3), together forming a complete new type of high flow static microfiltration machine system.

2. The novel high-flow static microfiltration machine according to claim 1, characterized in that, The specific structures of each component are as follows: 1) The upper compartment (1) consists of a left compartment (11) and a filter compartment (12); 2) The left compartment (11) is a rectangular open box formed by the front side plate I (111), the left side plate I (112), the rear side plate I (113) and the bottom plate I (114). The left side plate I (112) is provided with a main water inlet (115) in the middle position, and a main water inlet valve (116) is installed on the main water inlet (115). 3) The filter chamber (12) is composed of multiple microfiltration units (13) connected in parallel. Each microfiltration unit (13) includes a housing (131), a lifting assembly (132), a backwashing assembly (133), a sewage discharge assembly (134), a water pumping assembly (135), and a filter assembly (136). A common partition (14) is provided between adjacent microfiltration units (13). The height and width of the filter chamber (12) are the same as those of the left partition (11). 4) The lower compartment (2) is formed by the front side plate II (21), the left side plate II (22), the rear side plate II (23), the right side plate II (24) and the bottom plate II (25) to form a rectangular box with an open top. The bottom center of the right side plate II (24) has a water hole (26) that communicates with the right compartment (3). 5) The right compartment (3) is a rectangular box with an opening formed by the front side plate III (31), the rear side plate III (32), the right side plate III (33) and the bottom plate III (34). A main water outlet (35) is provided in the lower middle part of the right side plate III (33), and a main water outlet valve (36) is installed. A right compartment cover plate (37) is provided at the upper opening of the right compartment (3). 6) The cover plate (4) is provided with a transparent observation window (41), and the lower surface of the cover plate (4) is provided with a plastic sealing strip (42), which forms a seal with the upper opening of the microfilter. 7) The automatic control box (5) consists of a microcontroller or PLC and its control circuit (51), an upper water level sensor (52), a lower water level sensor (53), an upper proximity switch (54), and a lower proximity switch (55). The upper water level sensor (52) and the lower water level sensor (53) are installed on the left side plate IV (1312) of the box body (131). The upper water level sensor (52) is located at the upper edge of the filter screen (1364) and is used to monitor the high water level. The lower water level sensor... The sensor (53) is located at the lower edge of the filter screen (1364) and is used to monitor the low water level. The upper proximity switch (54) and the lower proximity switch (55) are installed on the right side plate IV (1314) of the housing (131). The upper proximity switch (54) corresponds to the initial horizontal height position of the parallel slider (1324), and the lower proximity switch (55) corresponds to the position of the parallel slider (1324) when it descends to the lowest horizontal height, thereby monitoring the position of the parallel slider (1324).

3. A novel high-flow-rate static microfiltration machine according to claim 2, characterized in that, The microfiltration unit (13) consists of a housing (131), a lifting assembly (132), a backwashing assembly (133), a sewage discharge assembly (134), a water pumping assembly (135), and a filter assembly (136), and the structure of each part is as follows: 1) The frame structure of the box (131): The box (131) is formed by the front side panel IV (1311), the left side panel IV (1312), the rear side panel IV (1313), the right side panel IV (1314) and the bottom panel IV (1315) being fixedly connected to form a rectangular box with an open shape. 2) Internal structure of the housing (131): The left support baffle (1316) is parallel to the left side plate IV (1312), located to the right of the left side plate IV (1312) and between the filter assembly (136). Its lower part is fixedly connected to the bottom plate IV (1315), and its upper part is fixedly connected to the left side plate IV (1312) through the left support plate (1317), which serves as support and separation; the right front support baffle (1318) is parallel to the right side plate IV (1314) and is vertically fixedly connected to the front side plate IV (1311). Its lower part is fixedly connected to the bottom plate IV (1315), which enhances the structural stability of the front of the housing; the right rear support baffle (1319) Similarly, it is parallel to the right side panel IV (1314) and vertically fixed to the rear side panel IV (1313). The lower part is fixedly connected to the bottom panel IV (1315) to stabilize the rear structure of the box. The lower part of the left side panel IV (1312) has a drain port (131201) and a water inlet (131202). The drain port (131201) is used to discharge the dirt that needs to be cleaned in the box. The bottom panel IV (1315) has a drain hole (131501) in the middle. The drain hole (131501) is located between the two filter screen components (136). The clean water filtered by the filter screen flows into the lower chamber (2) through the drain hole (131501) to realize the circulation of purified water. 3) The lifting assembly (132) consists of the following components: a support plate (1321), a screw jack (1322), a trapezoidal screw nut (1323), a parallel slider (1324), a linear optical axis (1325), a sliding bearing (1326), and a screw bearing seat (1327); the support plate (1321) is horizontally arranged, with its left end connected to the upper part of the right front support baffle (1318) and the right rear support baffle (1319), and its right end connected to the upper part of the right side plate IV (1314), providing a support structure for the entire assembly; the screw jack (1322) is fixed on the upper part of the support plate (1321), with the screw vertically downward, and its lower end connected to the bottom plate IV (1324) through the screw bearing seat (1327). 15) Connected as a power drive component; the trapezoidal screw nut (1323) is located in the middle of the parallel slider (1324), and the screw of the screw jack (1322) passes through it, realizing the conversion between the rotational motion of the screw and the linear motion of the parallel slider (1324); the linear optical axis (1325) is arranged vertically and parallel, with its lower end connected to the bottom of the base plate IV (1315) and its upper end connected to the lower part of the support plate (1321), providing guidance for the movement of the parallel slider (1324); the two ends of the parallel slider (1324) are respectively connected to sliding bearings (1326), and the sliding bearings (1326) are sleeved on the linear optical axis (1325), so that the parallel slider (1324) can rise and fall smoothly along the linear optical axis (1325); 4) The backwash assembly (133) consists of a backwash pipe (1331), a hose (1332), a connector (1333), and a backwash pump (1334), specifically as follows: the backwash pipe (1331) is horizontally positioned and connected to the parallel slider (1324) via the connector (1333), allowing it to move up and down with the parallel slider (1324); the backwash pipe (1331) has intermittent slits (133101) on both sides along its length, which replace nozzles. With a width between 0.5 and 1.5 mm, this design helps to achieve uniform and efficient backwashing operations; the outlet of the backwash pump (1334) is connected to the backwash pipe (1331) through a hose (1332); the backwash pump (1334) is placed in the right chamber (3) to provide power for the backwashing operation, causing water to flow through the hose (1332) into the backwash pipe (1331), and then spray out through the intermittent slits (133101) to backwash the filter screen (1364); 5) The sewage discharge assembly (134) consists of a sewage pipe (1341), a sewage pump (1342), and a sewage pump bracket (1343); the sewage pipe (1341) is responsible for discharging sewage and is connected to the sewage outlet (131201) at the bottom of the left side plate IV (1312) of the box (131); the sewage pump (1342) is fixed to the rear side plate IV (1313) of the box (131) through the sewage pump bracket (1343), and the inlet of the sewage pump (1342) is connected to the sewage pipe (1341); the sewage pump (1342) provides power for sewage discharge, allowing sewage and dirt in the box to flow in from the sewage outlet (131201), enter the sewage pump (1342) through the sewage pipe (1341), and be discharged from the outlet of the sewage pump (1342); 6) The water pumping assembly (135) consists of a water pump (1351) and a water outlet pipe (1352). The water pump (1351) is placed in the right compartment (3) to draw water. 7) The filter assembly (136) consists of a left slide groove (1361), a right slide groove (1362), a support frame (1363), a filter screen (1364), a pressure strip frame (1365), a clamping screw (1366), and a fixing locking screw (1367); the two left slide grooves (1361) are vertically fixed to the left and right sides of the left support baffle (1316), and the two right slide grooves (1362) are symmetrical to them and are respectively fixed to the right front support baffle (1318). The filter screen (1364) is pressed between the bracket frame (1363) and the pressure strip frame (1365) by the clamping screw (1366); the left and right sides of the bracket frame (1363) are respectively inserted into the left slide groove (1361) and the right slide groove (1362), and can slide up and down along the slide groove; a fixing locking screw (1367) is provided on one side of the left slide groove (1361) and the right slide groove (1362) to fix the position of the bracket frame.

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