Pulse backwashing filter

Abstract

The utility model relates to the technical field of filtering equipment, in particular to a pulse backwash filter, which comprises a filtering tank, a fixed plate fixed in the filtering tank and a plurality of microfiber filter elements mounted on the fixed plate, and the fixed plate divides the inside of the filtering tank into a clear water cavity and a filtering cavity from top to bottom in sequence. The bottom of the filter cavity is a concentration cavity, the microfiber filter element extends downwards into the filter cavity, a filter channel communicated with the clear water cavity is formed in the microfiber filter element, and a plurality of filter micropores communicated with the filter cavity and the filter channel are radially distributed in the microfiber filter element. A pulse backwashing pipe and a clear water pipe which are communicated with the clear water cavity are arranged at the top end of the filtering tank; one side of the filtering cavity is communicated with a water inlet pipe; the cleaning process is more convenient, the consumed time is shorter, and the filtering efficiency of the filter is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter equipment technical field, concretely to a kind of pulse backwash filter. BACKGROUND

[0002] In environmental protection sewage filtration, surface water filtration, rainwater filtration and other application scenarios, filter is needed to be used to filter and remove suspended solids and impurities in water, but in the long-term use process, filter core or filter screen is easy to accumulate suspended solids and impurities, regular cleaning and maintenance can guarantee the normal use of filter, for example, the existing authorized announcement No. CN221459934U a kind of backwash filter, belong to filter equipment technical field, including shell and filter screen, the shell is divided into shell a and shell b, shell a is equipped with water inlet pipe and flange a, shell b is equipped with water outlet, flange b, blow-off port and clean-out port, the shell b is equipped with fixed ring, fixed ring is connected with shell b by fixed part, the lower part of fixed ring is connected with blow-off port, characterized in that, filter screen is double-layer hollow structure, respectively filter screen a and filter screen b, filter screen a and filter screen b are respectively equipped with filter hole, filter screen a and filter screen b are connected by connecting piece to form a whole, the outer ring of filter screen a and filter screen b is sealed by rubber ring, filter screen a and filter screen b are filled with activated carbon, mainly applied to the filtration of domestic water and industrial water.

[0003] But in actual application, the above-mentioned filter still has the following deficiencies: the above-mentioned filter needs to be manually disassembled, and the filter screen is taken out, so that the filter screen can be cleaned, the cleaning process is more troublesome and time-consuming, and the filtering efficiency of the filter is reduced. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above-mentioned insufficient, provide a kind of pulse backwash filter, the process of cleaning is more convenient and time-consuming is shorter, guarantees the filtering efficiency of filter.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] A kind of pulse backwash filter, including filter tank, fixed plate in the filter tank, install multiple microfiber filter core on the fixed plate, the fixed plate divides the inside of the filter tank from top to bottom into clean water cavity and filter cavity, the bottom of the filter cavity is concentrated cavity, the microfiber filter core extends to filter cavity, the microfiber filter core is provided with filter channel communicating the clean water cavity, the microfiber filter core is radially distributed with multiple filter micropores communicating filter cavity and filter channel, the top of the filter tank is provided with pulse backwash pipe and clean water pipe communicating clean water cavity, the filter cavity is communicated with water inlet pipe on one side.

[0007] Further, the water inlet pipe is provided with a water inlet pump and a water inlet valve, one side of the filter cavity is connected with a backwashing return pipe, the water inlet end of the backwashing return pipe is connected with the filter cavity, the water outlet end of the backwashing return pipe is communicated with the raw water pool, the water inlet end of the water inlet pipe is communicated with the raw water pool, the water inlet end of the backwashing return pipe is arranged close to the fixed plate, and the backwashing return pipe is provided with a backwashing return valve.

[0008] Further, the bottom of the filter tank is provided with a residue discharge pipe communicated with the concentration cavity.

[0009] Further, the residue discharge pipe is provided with a residue discharge valve.

[0010] Further, a plurality of mounting through holes are vertically arranged on the fixed plate, the top end of the micro-fiber filter core is fixed with a mounting pipe, the top end of the mounting pipe is screwed with a mounting ring, the mounting pipe is matched with the mounting through hole in shape, and the micro-fiber filter core and the mounting ring are pressed against the fixed plate during screwing of the mounting ring on the mounting pipe, and the mounting ring, the mounting pipe and the filter channel are communicated.

[0011] Further, the pressure sensing sensor is arranged in the filter cavity, and the controller is arranged outside the filter tank.

[0012] The utility model discloses beneficial effect is:

[0013] I, when filtering, the raw water to be filtered enters the filter cavity through the water inlet pipe, is filtered from outside to inside through the filter micropore on the micro-fiber filter core, and the filtered liquid flows into the clean water cavity along the filter channel, and after filling the clean water cavity, under the action of pressure, flows out from the clean water pipe, the intercepted particulate matters are left on the surface of the micro-fiber filter core, and due to the increase of filter pressure, the mutual bridging compression forms filter cake layer, and the filter cake layer can further improve the filtering precision.

[0014] II, when the equipment starts pulse backwashing, the pulse backwashing water enters the clean water cavity from the pulse backwashing pipe, and the filtered water flows back to the filter channel from the clean water cavity, and the mud cake layer on the surface of the micro-fiber filter core is washed from inside to outside, and the washed mud cake layer is settled in the concentration cavity under the action of gravity and is accumulated and compressed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic diagram of the utility model;

[0016] Figure 2 It is the sectional view of the filter tank in the utility model;

[0017] Figure 3It is the structural schematic view of fixed plate and micro fiber filter core in the utility model;

[0018] Sign: filter jar 1, clear water chamber 11, filter chamber 12, concentration chamber 13, fixed plate 2, micro fiber filter core 3, mounting ring 31, pulse backwash pipe 4, clear water pipe 5, water inlet pipe 6, water inlet check valve 61, circulation pipe 7, backwash backflow pipe 7, backwash backflow valve 71, slag discharge pipe 8, raw water pool 9. DETAILED DESCRIPTION

[0019] As Figure 1 , Figure 2 and Figure 3 shown, a kind of pulse backwash filter, including filter jar 1, fixed plate 2 in the fixed plate 2 of the filter jar 1, multiple micro fiber filter core 3 installed on the fixed plate 2, the fixed plate 2 will the inside of the filter jar 1 from top to bottom be divided into clear water chamber 11 and filter chamber 12, the bottom of the filter chamber 12 is concentration chamber 13, the micro fiber filter core 3 extends to filter chamber 12 downwards, the micro fiber filter core 3 is provided with the filter passage that communicates clear water chamber 11, the micro fiber filter core 3 is radially distributed with multiple filter micropore that communicates filter chamber 12 and filter passage, the top of the filter jar 1 is provided with pulse backwash pipe 4 and clear water pipe 5 that communicate clear water chamber 11, one side of the filter chamber 12 is communicated with water inlet pipe 6.

[0020] When filtering, the raw water to be filtered enters filter chamber 12 through water inlet pipe 6, and is filtered from outside to inside through the filter micropore on the micro fiber filter core 3, and the filtered liquid flows upwards into clear water chamber 11 along the filter passage, and after filling clear water chamber 11, flows out from clear water pipe 5 under the action of pressure, and the intercepted particulate matter remains on the surface of the micro fiber filter core 3, and due to the increase of filter pressure, forms filter cake layer by bridging and compression, which can further improve the filtering precision.

[0021] When the equipment starts pulse backwash, pulse backwash water enters clear water chamber 11 from pulse backwash pipe 4, and at the same time, filtered water flows back to filter passage from clear water chamber 11, washes the mud cake layer on the surface of the micro fiber filter core 3 from inside to outside, and the washed mud cake layer settles into concentration chamber 13 under the action of gravity and is accumulated and compressed; pulse check valve is arranged on pulse backwash pipe 4, and on-off control valve is arranged on clear water pipe 5; the cleaning process of the utility model is more convenient and time-saving, and the filtering efficiency of the filter is ensured.

[0022] As Figure 1 , Figure 2 and Figure 3As shown in the drawings, the water inlet pipe 6 is provided with a water inlet pump 61 and a water inlet valve, one side of the filter cavity 12 is connected with a backwashing return pipe 7, the water inlet end of the backwashing return pipe 7 is connected with the filter cavity 12, the water outlet end of the backwashing return pipe 7 is communicated with the raw water pool 9, the water inlet end of the water inlet pipe 6 is communicated with the raw water pool 9, the water inlet end of the backwashing return pipe 7 is arranged close to the fixed plate 2, and the backwashing return pipe 7 is provided with a backwashing return valve 71; in the embodiment, the water in the raw water pool 9 is pumped into the filter tank 1 through the water inlet pump 61 and the water inlet pipe 6, when the device starts pulse backwashing, the water inlet valve is closed, and part of the backwashing water returns to the raw water pool 9 through the backwashing return pipe 7.

[0023] As shown in the drawings, Figure 1 , Figure 2 and Figure 3 , the bottom of the filter tank 1 is provided with a residue discharge pipe 8 communicated with the thickening cavity 13; in the embodiment, the high-concentration slurry can be discharged to a subsequent sludge treatment process through the residue discharge pipe 8.

[0024] As shown in the drawings, Figure 1 , Figure 2 and Figure 3 , the residue discharge pipe 8 is provided with a residue discharge valve; in the embodiment, the residue discharge pipe 8 can be controlled to be opened or closed through the residue discharge valve.

[0025] As shown in the drawings, Figure 1 , Figure 2 and Figure 3 , a plurality of mounting through holes are vertically arranged on the fixed plate 2, the top end of the micro-fiber filter core 3 is fixed with a mounting pipe, the top end of the mounting pipe is screwed with a mounting ring 31, the shape of the mounting pipe is matched with the mounting through hole, and the micro-fiber filter core 3 and the mounting ring 31 are fixed to the fixed plate 2 by extruding each other in the process of screwing the mounting pipe, the mounting ring 31, the mounting pipe and the filter channel are communicated; in the embodiment, the micro-fiber filter core 3 is detachably connected with the fixed plate 2 by screwing the mounting pipe with the mounting ring 31, and the micro-fiber filter core 3 is more convenient to disassemble and replace.

[0026] As shown in the drawings, Figure 1 , Figure 2 and Figure 3 , further comprising a pressure sensing sensor mounted in the filter cavity 12 and a controller arranged outside the filter tank 1, the pulse backwashing pipe 4 is provided with a pulse generator, and the pressure sensing sensor and the pulse generator are both electrically connected with the controller; in the embodiment, the pressure in the filter tank 1 is monitored by the pressure sensing sensor, and the pulse generator is controlled by the controller.

[0027] The specific embodiments described herein are merely illustrative of the present application. Various modifications or changes can be made to the specific embodiments described herein by those skilled in the art without departing from the scope of the present application.

Claims

1. A pulse backwash filter characterized by: The filter tank, the fixing plate fixed in the filter tank, the plurality of micro-fiber filter cores installed on the fixing plate, the fixing plate divides the inside of the filter tank into clean water cavity and filter cavity from top to bottom, the bottom of the filter cavity is the concentration cavity, the micro-fiber filter core extends into the filter cavity, the micro-fiber filter core is provided with a filter channel communicating with the clean water cavity, the micro-fiber filter core is radially distributed with a plurality of filter micropores communicating the filter cavity and the filter channel, the top of the filter tank is provided with a pulse backwash pipe and a clean water pipe communicating with the clean water cavity, and one side of the filter cavity is communicated with a water inlet pipe.

2. A pulse backwash filter machine according to claim 1, characterized in that, The water inlet pipe is installed with a water inlet pump and a water inlet valve, one side of the filter cavity is connected with a backwash return pipe, the water inlet end of the backwash return pipe is communicated with the filter cavity, the water outlet end of the backwash return pipe is communicated with the raw water pool, the water inlet end of the water inlet pipe is communicated with the raw water pool, the water inlet end of the backwash return pipe is arranged close to the fixing plate, and the backwash return pipe is provided with a backwash return valve.

3. A pulse backwash filter machine according to claim 1, characterized in that, The bottom of the filter tank is provided with a slag discharge pipe communicating with the concentration cavity.

4. A pulse backwash filter machine according to claim 3, wherein, The slag discharge pipe is provided with a slag discharge valve.

5. A pulse backwash filter machine according to claim 1, wherein, A plurality of installation through holes are vertically arranged on the fixing plate, the top end of the micro-fiber filter core is fixed with an installation pipe, the top end of the installation pipe is screwed with an installation ring, the shape of the installation pipe is matched with the installation through hole, in the process of screwing the installation ring to the installation pipe, the micro-fiber filter core and the installation ring are pressed to the fixing plate, and the installation ring, the installation pipe and the filter channel are communicated.

6. A pulse backwash filter machine according to claim 1, wherein, The pressure sensing sensor installed in the filter cavity and the controller arranged outside the filter tank are further included, the pulse generator is arranged on the pulse backwash pipe, and the pressure sensing sensor and the pulse generator are electrically connected with the controller.

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