CN213492448U

CN213492448U - Liquid filtering device with backwashing function

Info

Publication number: CN213492448U
Application number: CN202022300418.8U
Authority: CN
Inventors: 齐少飞; 仇现法
Original assignee: Hebei Dahuanyuan Agricultural Technology Co ltd
Current assignee: Hebei Dahuanyuan Agricultural Technology Co ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2021-06-22
Anticipated expiration: 2030-10-15

Abstract

The utility model provides a liquid filter equipment who possesses backwash function has and is cylindric shell, and the shell includes section of thick bamboo wall and front end housing and rear end cap, is equipped with water intake pipe, outlet pipe way and the sewage pipes who communicates with the inner chamber on the shell. Wherein, the water inlet pipeline and the sewage discharge pipeline are arranged on the cylinder wall, the water outlet pipeline is arranged at the central part of the front end cover, and a filter body which is spaced from the inner wall of the cylinder wall and is coaxially arranged with the shell is arranged in the inner cavity; the filter body divides the inner cavity into an external sewage discharge area and an internal filtering area, the water outlet pipeline is communicated with the internal filtering area, the water inlet pipeline and the sewage discharge pipeline are communicated with the external sewage discharge area, and valves are arranged on the water inlet pipeline and the sewage discharge pipeline. The utility model discloses a liquid filter equipment who possesses backwash function, inner structure and filtration route through improving filter equipment can improve the filtration and the backwash effect of device to the interval time that manual cleaning was maintained is carried out to the extension detaching device.

Description

Liquid filtering device with backwashing function

Technical Field

The utility model relates to a water treatment technical field, in particular to liquid filtering device who possesses backwash function.

Background

In the prior art, liquid filters have been widely used in various devices such as industry, agriculture, ships and seawater desalination treatment. The filter screen in the filter device is one of the key components, and the filter screen is easily polluted during the use process, so that the filter function of the filter screen is weakened or even completely lost. The traditional method is to manually clean the filter screen, and equipment needs to be in a halt state, so that the workload is high, the working efficiency is greatly reduced, and the automatic production is not facilitated. Therefore, backwashing type cleaning filters are developed and used.

In the conventional backwashing filter, sewage to be filtered flows from the inner side of the filter screen to the outer side to finish filtering, and dirt is retained and blocked at the inner side of the filter screen. The blockage condition of the filter screen is judged through the pressure difference change of the inner side and the outer side of the filter screen, and dirt on the inner side of the filter screen is washed and discharged through opening a backwashing sewage discharge pipeline communicated with the inner side of the filter screen, so that the function of automatic cleaning is realized. But this kind of backwash structure that has now, to being detained the dirt cleaning performance on the filter screen relatively poor, because it is that water washes the dirt that lies in same one side from the inboard of filter screen, and washing dynamics, cover surface are all not enough, and the direction of washing is not good, causes the backwash effect general, and the filter screen still needs to dismantle after a period and the manual work carries out thorough washing or change.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a liquid filter equipment who possesses backwash function, through the inner structure and the filtration route of improving filter equipment to improve the filtration and the backwash effect of device, thereby the interval time that the extension detaching device carried out manual cleaning and maintains.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a liquid filtering device with a backwashing function is provided with a cylindrical shell, wherein the shell comprises a cylinder wall, a front end cover and a rear end cover which are arranged at the front end and the rear end of the cylinder wall, an inner cavity is formed in the shell, and a water inlet pipeline, a water outlet pipeline and a sewage discharge pipeline which are communicated with the inner cavity are arranged on the shell;

the water inlet pipeline and the sewage discharge pipeline are arranged on the cylinder wall, the water outlet pipeline is arranged at the central part of the front end cover, and a filter body which is spaced from the inner wall of the cylinder wall and is coaxially arranged with the shell is arranged in the inner cavity; the filter body divides the inner cavity into an external sewage discharge area and an internal filtering area, the water outlet pipeline is communicated with the internal filtering area, the water inlet pipeline and the sewage discharge pipeline are communicated with the external sewage discharge area, and valves are arranged on the water inlet pipeline and the sewage discharge pipeline.

Furthermore, the filter body is configured to be rotatable in the inner cavity, the water inlet pipeline is arranged to deviate from the rotation axis of the filter body, so that water entering the inner cavity from the water inlet pipeline forms impact force for driving the filter body to rotate, and a brushing mechanism capable of brushing the surface of the filter body is installed on the inner wall of the cylinder wall.

Furthermore, the brushing mechanism is arranged on one side opposite to the water inlet pipeline.

Furthermore, the part of the water inlet pipeline connected with the cylinder wall is constructed into a flat horn-shaped wide opening part, and a water inlet formed by the wide opening part is arranged right opposite to the lower part of the filter body on the inner side of the cylinder wall.

Furthermore, a splitter plate is arranged on the upper side of the water inlet, so that most of the water entering the inner cavity from the water inlet enters from the lower part of the splitter plate.

Further, the sewage discharge pipeline is arranged right below the inner cavity.

Furthermore, the connecting part of the sewage discharge pipeline and the cylinder wall is constructed into a trumpet-shaped confluence opening.

Further, filter the filter screen of body for the cover on locating filtering the basket, filter the basket including preceding frame, back plate and link firmly in preceding frame with a plurality of vaulting poles between the back plate, each the vaulting pole forms in pairs the support of filter screen.

Furthermore, a rotating shaft is arranged on the rear plate, a raised assembling ring is constructed on the front frame, a shaft hole is formed in the rear end cover, and a ring groove is formed in the front end cover; the filter body is rotatably arranged in the inner cavity due to the bearing of the rotating shaft in the shaft hole and the assembling ring in the ring groove.

Compared with the prior art, the utility model discloses following advantage has:

liquid filtering device who possesses backwash function, pending sewage flows towards the inboard from the outside of filter screen in order to accomplish the filtration, the dirt can be detained in the filter screen outside, thereby make the attachment surface of dirt on filter screen surface bigger, the adhesion firmness variation, along with the washing away of the water that the inlet channel flowed in, and when the valve was opened on the blow off pipe way, the filter screen inside and outside as the filter body formed pressure differential, water can be followed the filter screen inboard and washed out to the outside, realize good recoil to filter screen outside dirt, thereby do benefit to the filtration and the backwash effect of improving device, disassemble the interval time that the device carried out manual cleaning maintenance.

Through setting up the filter body into rotatable form, and install the brush in the inner chamber additional and remove the mechanism, the impact force that utilizes water intake pipe's the formation of intaking orders about the filter body rotation, utilize the brush to remove the machine configuration and scrub to the filter body surface, not only can give full play to the filtration performance of filtering the whole filter area of filter body, and can in time with be detained under the dirt brush of filter body surface and deposit the inner chamber bottom, discharge when opening the valve on the sewage pipes, can be very hoisting device's self-cleaning performance, reduce the requirement that manual cleaning maintained.

Meanwhile, the water inlet pipeline and the brushing mechanism are respectively arranged at two sides of the filtering body, so that the integral arrangement in the inner cavity of the device is facilitated, and the deposition of scraped dirt is facilitated; the connecting part of the water inlet pipeline is constructed into a flat horn-shaped wide opening part, so that the water inlet is flushed at the lower part of the filter body and is axially arranged along the cylinder wall, uniform and good impact effect on the filter body can be formed, dirt in water can be more uniformly filtered out of the surface of the filter body, and good impact force for driving the filter body to rotate can be formed.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

FIG. 1 is a schematic view of an external overall structure of a liquid filtering apparatus with backwashing function according to an embodiment of the present invention;

FIG. 2 is an exploded view of the apparatus of FIG. 1;

FIG. 3 is a schematic view of the internal structure of the liquid filtering apparatus shown in a of FIG. 1;

fig. 4 is a schematic perspective view of the liquid filtering apparatus according to the embodiment of the present invention after removing the front end cap, the rear end cap and cutting off part of the cylinder wall;

FIG. 5 is a schematic view of the device shown in FIG. 4 from another viewing angle;

fig. 6 is a schematic view of an assembly structure of the filter basket according to the embodiment of the present invention on the front end cover and the rear end cover;

fig. 7 is a schematic view of the arrangement of two liquid filtering devices according to an embodiment of the present invention in a parallel connection usage situation;

description of reference numerals:

2-housing, 20-lumen, 200-barrel wall, 201-front end cap, 202-rear end cap, 203-brushing mechanism, 204-flow distribution plate, 205-fixing seat, 206-fastening piece, 207-external blowdown region, 208-internal filtering region, 21-water inlet pipe, 210-wide mouth part, 211-water inlet valve, 212-water inlet, 22-water outlet pipe, 220-outlet, 23-blowdown pipe, 230-confluence mouth, 231-blowdown valve, 250-mounting hole, 3-filter, 30-filter basket, 301-brace rod, 302-front frame, 303-rear plate, 304-assembly ring, 305-ring groove, 306-rotating shaft; 307-shaft hole.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, terms of left, right, up, down, and the like are used for convenience of description and are based on terms in the illustrated state, and should not be construed as limiting the structure of the present invention; references to first, second, third, etc. are also made for ease of description and are not to be construed as indicating or implying relative importance.

The embodiment relates to a liquid filtering device with a backwashing function, which can improve the filtering and backwashing effects of the device by improving the internal structure and the filtering path of the filtering device, thereby prolonging the interval time of manual cleaning and maintenance of a disassembling device.

The liquid filtering device with the backwashing function is provided with a cylindrical shell, the shell comprises a cylinder wall, a front end cover and a rear end cover, the front end cover and the rear end cover are installed at the front end and the rear end of the cylinder wall, and an inner cavity is formed in the shell.

The shell is provided with a water inlet pipeline, a water outlet pipeline and a sewage discharge pipeline which are communicated with the inner cavity; the water inlet pipeline and the sewage discharge pipeline are arranged on the cylinder wall, the water outlet pipeline is arranged at the central part of the front end cover, a filter body which is separated from the inner wall of the cylinder wall and is coaxially arranged with the shell is further arranged in the inner cavity, the filter body divides the inner cavity into an external sewage discharge area and an internal filtering area, the water outlet pipeline is communicated with the internal filtering area, the water inlet pipeline and the sewage discharge pipeline are communicated with the external sewage discharge area, and valves are arranged on the water inlet pipeline and the sewage discharge pipeline.

Based on the above general structural principles, the present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments. An exemplary structure of the liquid filtering apparatus with backwashing function of the present embodiment is shown in fig. 1 and 2.

Since the filter screen of the backwashing filter device is generally cylindrical in shape to increase the filtering area, in this embodiment, the casing 2 of the backwashing liquid filter device is also cylindrical in shape, and includes a cylinder wall 200, and a front end cap 201 and a rear end cap 202 attached to the front and rear ends of the cylinder wall 200, and an inner cavity 20 is formed inside the casing 2. On the outer wall of the housing 2, there are provided a water inlet pipe 21, a water outlet pipe 22 and a sewage discharge pipe 23 which are communicated with the inner cavity 20. Of course, the front cover 201 and the rear cover 202 may be hermetically mounted together by the mounting holes 250 provided therein and fasteners such as bolts, etc., to constitute the entire housing 2.

Unlike the conventional backwashing filter, the water inlet line 21 and the sewage discharge line 23 of the filtering apparatus of this embodiment are disposed on the cylindrical wall 200, and the water outlet line 22 is disposed at the center of the front end cap 201. The water is fed from the peripheral surface of the device, and discharged from the end surface of the device along the axial direction, and the dirt is discharged from the sewage discharge pipeline 23 on the peripheral surface.

As shown in fig. 3, a filter body 3 is disposed in the inner chamber 20, spaced apart from the inner wall of the cylinder wall 200, and coaxially with the housing 2; the filter body 3 divides the inner cavity 20 into an external sewage discharge area 207 and an internal filtering area 208, the water outlet pipe 22 is communicated with the internal filtering area 208, and the water inlet pipe 21 and the sewage discharge pipe 23 are communicated with the external sewage discharge area 207, so that sewage entering from the water inlet pipe 21 enters the internal filtering area 208 inside the filter body 3 from the external sewage discharge area 207 outside the filter body 3 and is discharged outside the device from the internal filtering area 208 through the water outlet pipe 22.

Meanwhile, the water inlet pipe 21 and the sewage draining pipe 23 are respectively provided with a water inlet valve 211 and a sewage draining valve 231, when sewage is filtered, the sewage draining valve 231 is closed, the water inlet valve 211 is opened, the sewage enters the inner cavity 20 from the water inlet pipe 21, and the sewage is discharged from the water outlet pipe 22 after passing through the filter body 3. When backwashing of the filter body 3 is required, the water inlet valve 211 is closed, the blow-down valve 231 is opened, and water is returned from the inner filtered region 208 to the outer blow-down region 207 by means of the remaining water pressure in the inner filtered region 208, so that dirt filtered out on the outer surface of the filter body 3 can be partially washed away and discharged to the outside of the apparatus along with water from the blow-down pipe 23.

As shown in fig. 2 in combination with fig. 4 and 5, in the present embodiment, the filter body 3 is configured to be rotatable in the inner cavity 20, and the water inlet pipe 21 is disposed away from the rotation axis of the filter body 3, so that the water entering the inner cavity 20 from the water inlet pipe 21 can form an impact force for driving the filter body 3 to rotate, and a brushing mechanism 203 for brushing the surface of the filter body 3 is installed on the inner wall of the cylinder wall 200. Through setting up filter body 3 into rotatable form, and install brushing mechanism 203 additional at inner chamber 20, utilize the impact force that the intaking of inlet channel 21 formed to order about filter body 3 rotatory, utilize brushing mechanism 203 to form the scrubbing to filter body 3 surface, not only can full play filter body 3 whole filter area's filtration performance, and can in time brush down and deposit to inner chamber 20 bottom the dirt that is detained in filter body 3 surface, discharge when opening the valve on sewage pipes 23, can be for hoisting device's self-cleaning performance greatly, reduce the requirement of manual cleaning maintenance.

To facilitate the overall arrangement in the inner chamber 20 of the device and to facilitate the settling of the scraped-off dirt, it is preferred to provide the brushing means 203 on the side opposite to the water inlet line 21, i.e. the water inlet line 21 and the brushing means 203 are provided on both sides of the filter body 3, respectively. Meanwhile, the portion of the water inlet pipe 21 connected to the cylindrical wall 200 may be configured as a wide opening 210 in a flat horn shape, and a water inlet 212 formed in the wide opening 210 is disposed at the inner side of the cylindrical wall 200 so as to face the lower portion of the filter 3. Thus, the water inlet 212 is in the shape of a long oblate and is parallel to the axial direction of the cylindrical wall 200 and faces the lower part of the filter body 3, so that uniform and good impact effect on the filter body 3 can be achieved, dirt in water can be more uniformly filtered out onto the surface of the filter body 3, and good impact force for driving the filter body 3 to rotate can be achieved.

As shown in fig. 3 in conjunction with fig. 5, the diverter plate 204 is positioned above the water inlet 212 such that most of the water entering the interior chamber 20 from the water inlet 212 enters below the diverter plate 204. The arrangement of the flow distribution plate 204 can enable water entering from the water inlet 212 to form an upper water flow and a lower water flow, the lower large water flow impacts the filter body 3 to drive the filter body to rotate, the upper small water flow further cleans the filter body 3 scrubbed by the brushing mechanism 203, and a good continuous flushing effect can be achieved, so that the frequency of opening a valve of the sewage discharge pipeline 23 for backwashing can be reduced, and the cleaning and maintenance cost of the device is further reduced.

The brushing mechanism 203 may be a conventional brush, and the diversion plate 204 may be a curved plate, which may be mounted by a fixing base 205 fixed on the inner wall of the cylinder wall 200 and a fastening member 206 such as a screw.

In addition, in order to improve the backwashing sewage discharge efficiency and reduce the sewage discharge amount, the sewage discharge pipeline 23 is preferably arranged right below the inner cavity 20, so that the washed and brushed-off dirt is collected at the bottom of the inner cavity 20, and when the backwashing mode is started and the valve on the sewage discharge pipeline 23 is opened, the collected dirt is conveniently and quickly discharged to the outside of the device from the sewage discharge pipeline 23. The junction of the sewage discharge pipeline 23 and the cylinder wall 200 is configured as a trumpet-shaped confluence port 230; the drainage of dirt is convenient for discharge to further promote the efficiency of backwash blowdown.

As shown in fig. 2 and 6, the filtering body 3 is a filter net sleeved on the filtering basket 30, the filtering basket 30 includes a front frame 302, a rear plate 303 and a plurality of support rods 301 fixedly connected between the front frame 302 and the rear plate 303, and each support rod 301 forms a support for the filter net. The filter screen that adopts different particle diameters can realize different filtration requirements, loads the filter screen through filtering basket 30, not only can form the good support to the filter screen, and the dismouting of the filter screen of being convenient for is changed.

Specifically, the rear plate 303 is provided with a rotating shaft 306, the front frame 302 is provided with a raised assembling ring 304, the rear end cover 202 is provided with a shaft hole 307, and the front end cover 201 is provided with a ring groove 305; the filter body 3 is rotatably arranged in the inner chamber 20 due to the mounting of the spindle 306 in the spindle bore 307 and the mounting of the mounting ring 304 in the annular groove 305. By respectively arranging the annular groove 305 and the shaft hole 307 on the front end cover 201 and the rear end cover 202, the filter basket 30 can be well and rotatably assembled on the shell 2, and the outlet 220 of the water outlet pipeline 22 is avoided, so that the requirements of filtering and rotating cleaning of the filter body 3 are met, and the device is suitable for the self structural characteristics of the device.

It should be noted that, in order to achieve a good use effect, as shown in fig. 7, the two liquid filtering devices with backwashing function in this embodiment are better connected in parallel. When one of the devices needs backwashing, the water inlet valve 211 of the device can be closed, the drain valve 231 of the device can be opened, and the other device is still in a filtering working state. Thus, the water outlet pipeline 22 of the other device can supply part of water to the device in the backwashing state, so that the backwashing water pressure of the device is increased, the backwashing treatment can be carried out alternately under the state that the filtering use is not influenced, and the backwashing effect is better.

Certainly, a differential pressure detection device can be additionally arranged in the device, and the dirt accumulation condition of the filter body 3 is judged by measuring the pressure difference between the internal and external sewage discharge area 207 and the internal filtering area 208 of the device, so that a control signal is provided for backwashing operation, the automatic backwashing function is realized, and the automatic control chain can be realized by adopting the prior art.

This embodiment the liquid filtering device who possesses backwash function, pending sewage flows in order to accomplish the filtration from the outside of filter screen to the inboard, the dirt can be detained in the filter screen outside, thereby make the dirt bigger at the attached surface on filter screen surface, the adhesion firmness variation, along with the washing away of the water that water intake pipe 21 flows in, and when 23 last valves of sewage pipes opened, form pressure differential as the filter screen inside and outside of filter body 3, water can be followed the filter screen inboard and outwards washed out, realize good recoil to filter screen outside dirt, thereby do benefit to the filtration and the backwash effect of improving device, the extension disassembles the interval time that the device carries out manual cleaning and maintains.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid filtering device with a backwashing function is provided with a cylindrical shell (2), wherein the shell (2) comprises a cylinder wall (200), a front end cover (201) and a rear end cover (202) which are arranged at the front end and the rear end of the cylinder wall (200), an inner cavity (20) is formed in the shell (2), and a water inlet pipeline (21), a water outlet pipeline (22) and a sewage discharge pipeline (23) which are communicated with the inner cavity (20) are arranged on the shell (2); the method is characterized in that:

the water inlet pipeline (21) and the sewage discharge pipeline (23) are arranged on the cylinder wall (200), the water outlet pipeline (22) is arranged at the central part of the front end cover (201), and a filter body (3) which is spaced from the inner wall of the cylinder wall (200) and is coaxially arranged with the shell (2) is arranged in the inner cavity (20); the filter body (3) separates the inner cavity (20) into an external sewage discharge area (207) and an internal filtering area (208), the water outlet pipeline (22) is communicated with the internal filtering area (208), the water inlet pipeline (21) and the sewage discharge pipeline (23) are communicated with the external sewage discharge area (207), and valves are arranged on the water inlet pipeline (21) and the sewage discharge pipeline (23).

2. The backwash-equipped liquid filter device according to claim 1, wherein: the filter body (3) is configured to be rotatable in the inner cavity (20), the water inlet pipeline (21) is arranged to deviate from the rotation axis of the filter body (3), so that the water entering the inner cavity (20) from the water inlet pipeline (21) forms impact force for driving the filter body (3) to rotate, and a brushing mechanism (203) capable of brushing the surface of the filter body (3) is installed on the inner wall of the cylinder wall (200).

3. The backwash-equipped liquid filter device according to claim 2, wherein: the brushing mechanism (203) is arranged on one side opposite to the water inlet pipeline (21).

4. The backwash-equipped liquid filter device according to claim 2, wherein: the part of the water inlet pipeline (21) connected with the cylinder wall (200) is constructed into a flat trumpet-shaped wide opening part (210), and a water inlet (212) formed by the wide opening part (210) is arranged right opposite to the lower part of the filter body (3) on the inner side of the cylinder wall (200).

5. The backwash-equipped liquid filter device according to claim 4, wherein: a flow distribution plate (204) is arranged above the water inlet (212), so that most of the water entering the inner cavity (20) from the water inlet (212) enters from the lower part of the flow distribution plate (204).

6. The backwash-equipped liquid filter device according to claim 4, wherein: the sewage discharge pipeline (23) is arranged right below the inner cavity (20).

7. The backwash-equipped liquid filter device according to claim 6, wherein: the connecting position of the sewage discharge pipeline (23) and the cylinder wall (200) is constructed into a trumpet-shaped confluence opening (230).

8. A liquid filtering apparatus with a backwashing function according to any one of claims 1 to 7, wherein: the filter body (3) is the filter screen of cover on locating filter basket (30), filter basket (30) including preceding frame (302), back plate (303) and link firmly in preceding frame (302) with a plurality of vaulting pole (301) between back plate (303), each vaulting pole (301) form right the support of filter screen.

9. The backwash-equipped liquid filter device according to claim 8, wherein: a rotating shaft (306) is arranged on the rear plate (303), a raised assembling ring (304) is constructed on the front frame (302), a shaft hole (307) is formed in the rear end cover (202), and a ring groove (305) is formed in the front end cover (201); the filter body (3) is rotatably arranged in the inner cavity (20) due to the installation of the rotating shaft (306) in the shaft hole (307) and the installation of the assembling ring (304) in the ring groove (305).