CN214513160U - Back-cleaning filter - Google Patents

Abstract

The utility model discloses a reverse cleaning filter. This kind of backwashing filter includes: an outer housing; the filter unit, filter unit movable mounting is in the shell body, and the filter unit includes: the filter column is used for filtering impurities in the liquid; and the driving unit is arranged on the filtering unit and is used for driving the filtering column to move up and down, so that the backwashing filter is switched between a filtering working state and a sewage discharging working state. When the anti-cleaning filter is used, the driving unit drives the filtering unit to move, so that the working state of the anti-cleaning filter is switched between filtering and sewage discharging, the anti-cleaning filter is convenient to self-clean, the step of cleaning impurities is simplified, and the cleaning efficiency is improved.

Description

Back-cleaning filter

Technical Field

The utility model relates to a filter equipment, in particular to anti-cleaning filter.

Background

The filter is an indispensable front end device on a medium conveying pipeline, is usually installed at inlet end equipment of other equipment such as a pressure reducing valve, a pressure relief valve, a constant water level valve and the like, and a main body of the filter usually consists of a cylinder body and a first filter screen.

The filter needs to clean out solid impurities blocked by a filter screen in the long-term use process, namely, the pollution discharge work is carried out to ensure that the filter keeps a good filtering work state.

SUMMERY OF THE UTILITY MODEL

This application can simplify the step of clearance impurity in the filter through providing a reverse cleaning filter, improves cleaning efficiency.

The embodiment of the application provides a backwashing filter, include:

an outer housing;

the filter unit, filter unit movable mounting in the shell body, the filter unit includes: the filter column is used for filtering impurities in the liquid;

and the driving unit is arranged on the filtering unit and used for driving the filtering column to move up and down, so that the backwashing filter is switched between a filtering working state and a sewage discharging working state.

When the anti-cleaning filter is used, the driving unit drives the filtering unit to move, so that the working state of the anti-cleaning filter is switched between filtering and sewage discharging, the anti-cleaning filter is convenient to self-clean, the step of cleaning impurities is simplified, and the cleaning efficiency is improved.

On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:

further: the filter unit further comprises: the inner shell body, the inner shell body install in the shell body, the inner shell body is provided with the filter chamber, the side of inner shell body seted up respectively with water inlet, the delivery port of filter chamber intercommunication, the lower extreme of inner shell body seted up with the drain of filter chamber intercommunication, the drain be used for with impurity discharge in the filter chamber, the filter column install in can follow vertical motion in the filter chamber, the filter column be used for with impurity in the liquid filter extremely in the filter chamber, the upper end of filter column is installed the drive unit, the filter column lower extreme is provided with the sealing, the sealing is used for controlling opening and closing of drain. The beneficial effect of this step: the impurities are blocked in the filter cavity through the filter column, the impurities are prevented from being discharged from the water outlet, and the sealing part moves along with the filter column synchronously, so that the opening and closing of the sewage draining port are controlled.

Further: the sealing portion includes: insert post, sealing washer, insert the post clearance and insert and locate in the drain, the sealing washer install in insert the post and be used for with the drain is sealed.

Further: the filter column is slidably inserted into the inner shell and is also in threaded connection with the driving unit.

Further: the filter unit further comprises: the spacer bush is provided with a first sliding hole along the axis, and the water inlet is communicated with the first sliding hole;

the filtration column includes from top to bottom: the filter column comprises a first sliding portion, a first opening, a second sliding portion, a third sliding portion and a second opening, wherein the first sliding portion, the second sliding portion and the third sliding portion are convexly arranged on an annular boss on the outer surface of the filter column, the first sliding portion and the second sliding portion are hermetically and slidably inserted in the first sliding hole, the distance between the first sliding portion and the second sliding portion is smaller than the vertical height of the spacer sleeve, the lower end of the filter cavity is a second sliding hole, the third sliding portion is hermetically and slidably inserted in the inner shell, the diameter of the third sliding portion is larger than that of the first sliding hole, and the distance between the second sliding hole and the first sliding hole is larger than the thickness of the third sliding portion. The beneficial effect of this step:

further: the filter unit further comprises: the locating part, the locating part is located the top of interior casing and with it is connected to filter the post, the locating part is used for restricting filter the extreme position of post up-and-down motion. The beneficial effect of this step: the limiting position of the movement of the filter column is limited by the limiting part, so that the working state of the backwashing filter is convenient to control.

Further: the filter column is provided with a first filter screen and a second filter screen, the first filter screen covers the first opening, and the second filter screen covers the second opening. The beneficial effect of this step: the secondary filtration of the liquid is realized through the first filter screen and the second filter screen, so that the filtration effect is improved.

Further: the driving unit includes: the first driving piece and the second driving piece are rotatably arranged above the outer shell and are in threaded connection with the filtering column, the second driving piece is rotatably arranged at the upper end of the outer shell, and the second driving piece is used for driving the filtering column to rotate in place;

the filter unit further comprises: the cleaning piece is arranged on the inner shell and provided with a cleaning part contacted with the outer wall of the filter screen. The beneficial effect of this step: the first driving piece drives the filter column to move vertically, so that the filter column is switched between a filtering working state and a pollution discharge working state.

Further: the limiting part is in threaded connection with the part, extending out of the filter column, of the upper portion of the inner shell, and the limiting part is arranged between the inner shell and the second driving part. The locating part and the mode of filtering post threaded connection are convenient for adjust the position of locating part on filtering the post to be convenient for control the extreme position of filtering the post motion.

Further: and the driving piece II is convexly provided with a driving block towards the filtering column, and the driving block is inserted into a slot correspondingly formed in the filtering column. The beneficial effect of this step: the driving block generates pressure on the side wall of the slot, so that the filter column is driven to rotate in place.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the driving unit drives the filter column to move, so that whether the drain outlet is opened or not is controlled, the filter column can be cleaned without taking out the filter column, and the cleaning efficiency is greatly improved;

2. when the sewage draining port is opened, sewage enters the interior of the filter column through the first opening and then is discharged through the second opening until the sewage is discharged from the sewage draining port, and the back washing mode realizes a washing mode from inside to outside and greatly improves the washing effect;

3. and the outer wall of the second filter screen is scraped and cleaned through the cleaning piece, so that the cleaning efficiency and the cleaning effect are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is a schematic structural view of the present invention with the outer shell removed;

FIG. 4 is a partial enlarged view of B in FIG. 3;

FIG. 5 is an enlarged view of a portion C of FIG. 3;

FIG. 6 is a left side view of FIG. 1;

fig. 7 is a cross-sectional view taken along line D-D of fig. 6.

Wherein the content of the first and second substances,

1 an outer shell;

2, a filtering unit, 201 filtering columns, 202 inner shells, 203 filtering cavities, 204 water inlets, 205 water outlets, 206 sewage outlets, 207 sealing parts, 208 inserting columns, 209 spacer bushes, 210 sliding hole I, 211 protruding parts, 212 inserting holes, 213 flow guide ports, 214 clamping grooves, 215 sliding part I, 216 opening I, 217 sliding part II, 218 sliding part III, 219 opening II, 220 sliding hole II, 221 filtering net I, 222 filtering net II, 223 filtering holes, 224 limiting parts, 225 cleaning parts and 226 inserting grooves;

3 drive unit, drive unit one 301, drive unit two 302, rotation part 303, drive part 304, gap 305, limit block 306, drive block 307.

Detailed Description

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; the mechanical connection can be realized by selecting a proper connection mode in the prior art, such as welding, riveting, threaded connection, bonding, pin connection, key connection, elastic deformation connection, buckle connection, interference connection and injection molding; or an electrical connection, transmitting energy or signals by electricity; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

As shown in fig. 1 and 2, a backwashing filter includes: shell body 1, filter unit 2, drive unit 3, shell body 1 is along vertical placing, and filter unit 2 movable mounting is in shell body 1, and filter unit 2 includes: the filter column 201 is used for filtering impurities in liquid, the driving unit 3 is installed on the filter unit 2, and the driving unit 3 is used for driving the filter column 201 to move up and down in the filter cavity 203, so that the backwashing filter is switched between a filtering working state and a pollution discharge working state.

As shown in fig. 1 and 2, the filter unit 2 further includes: the inner shell 202, the inner shell 202 is installed in the outer shell 1, a filter cavity 203 is arranged in the inner shell 202, a water outlet 205 is arranged on the left side (in the figure) of the inner shell 202, a water inlet 204 is arranged on the right side, the water inlet 204 and the water outlet 205 are communicated with the filter cavity 203, a sewage outlet 206 communicated with the filter cavity 203 is arranged at the lower end of the inner shell 202, the sewage outlet 206 is used for discharging impurities in the filter cavity 203, the filter column 201 is installed in the filter cavity 203 and can move vertically, the filter column 201 is used for filtering impurities in liquid into the filter cavity 203, the driving unit 3 is installed at the upper end of the filter column 201, a sealing portion 207 is arranged at the lower end of the filter column 201, and the sealing portion 207 is used for controlling the opening and closing of the sewage outlet 206.

As shown in fig. 3, the seal portion 207 includes: insert post 208, the sealing washer, it is located to insert post 208 the lower extreme of filter column 201, insert post 208 along vertical setting and the clearance insert locate in drain 206, the sealing washer is installed to the periphery, the sealing washer with insert post 208 and drain 206 phase-match, when inserting post 208 motion and making the sealing washer move to drain 206 in, drain 206 is closed, the back washing filter is in filtration operating condition this moment, when inserting post 208 motion to the sealing washer and deviate from drain 206, drain 206 is opened, the back washing filter is in the blowdown condition this moment (be promptly filter column 201 the impurity of filtering out along with liquid from drain 206 exhaust operating condition).

As shown in fig. 3, the filter column 201 is slidably inserted into the inner housing 202, so that the filter column 201 can move in a vertical direction; the filter column 201 is screwed to the driving unit 3 so that the filter column 201 can move vertically in the filter chamber 203 by the rotation of the driving unit 3.

As shown in fig. 4, in particular, the filter unit 2 further includes: spacer 209, spacer 209 is cylindrical and sets up along vertical, sliding hole 210 has been seted up along the axis to spacer 209, spacer 209 is inserted and is located the upper end of filter chamber 201, the grafting department of spacer 209 and filter chamber 201 is provided with the sealing washer, water inlet 204 communicates with sliding hole 210, it is concrete, the protruding columniform bellying 211 that is equipped with that is bad on spacer 209 right side, the jack 212 has been seted up along the axis to bellying 211, the mouth 213 is inserted in the jack 212, mouth 213 is tubaeform, the tip of mouth 213 is inserted and is located in the jack 212, the main aspects of mouth 213 are inserted and are located in the water inlet 204, the draw-in groove 214 that water inlet 204 was seted up is located to the main aspects card of mouth 213, all be provided with the sealing washer between mouth 213 and jack 212, water inlet 204.

As shown in fig. 4, the filter column 201 includes, from top to bottom: the first sliding part 215, the first opening 216, the second opening 217, the third sliding part 218 and the second opening 219 are annular bosses which are convexly arranged on the outer surface of the filter column 201, the first sliding part 215 and the second opening 217 are hermetically and slidably inserted in the first sliding hole 210, the distance between the first sliding part 215 and the second opening 217 is smaller than the vertical height of the spacer 209, and the meaning is that the first sliding part 215 and the second opening 217 can simultaneously move into the first sliding hole 210 to separate the water inlet 204 from the water outlet 205, and at the moment, the backwashing filter is in a filtering working state; the lower end of the filter cavity 203 is provided with a second sliding hole 220, the second sliding hole 220 is positioned right below the first sliding hole 210, the third sliding part 218 is hermetically and slidably inserted into the second sliding hole 220, the diameter of the third sliding part 218 is larger than that of the first sliding hole 210, the distance between the second sliding hole 220 and the first sliding hole 210 is larger than the thickness of the third sliding part 218, and the meaning of the position is that when the first sliding part 215 and the second sliding part 217 move into the first sliding hole 210 simultaneously, the third sliding part 218 is separated from the second sliding hole 220, so that the second sliding hole 220 is communicated with the water outlet 205, at the moment, the backwashing filter is in a filtering working state, and liquid is introduced from the water inlet 204 and sequentially passes through the first sliding hole 216, the filter column 201, the second opening 219, the second sliding hole 220 and the water outlet 205, so that the filtering operation of impurities in the liquid is realized.

As shown in fig. 3-4, the filtering capacity of the filtering column 201 is realized by the following structure, the filtering column 201 is provided with a first filtering net 221 and a second filtering net 222, the first filtering net 221 covers the first opening 216, the second filtering net 222 covers the second opening 219, specifically, the filtering column 201 is provided with a filtering hole 223 along a vertical central axis, the first opening 216 and the second opening 219 are provided with a plurality of openings which are uniformly distributed on the periphery of the filtering column 201, the first opening 216 and the second opening 219 are communicated with the filtering hole 223, the first filtering net 221 is inserted into the filtering hole 223, the second filtering net 222 is sleeved on the outer side of the filtering column 201, so that impurities in liquid are secondarily filtered through the first filtering net 221 and the second filtering net 222, and the filtering effect on the impurities is improved.

As shown in fig. 3-4, the filter unit 2 further comprises: the limiting member 224 is located above the inner housing 202 and connected to the filter column 201, and the limiting member 224 is used for limiting the limit position of the filter column 201 in the up-and-down movement, so as to facilitate the control of the switching of the working state of the backwashing filter by the driving unit 3.

As shown in fig. 3, 6, and 7, the drive unit 3 includes: the first driving piece 301 is rotatably arranged above the outer shell 1 and is in threaded connection with the filter column 201, the second driving piece 302 is rotatably arranged at the upper end of the outer shell 1, and the second driving piece 302 is used for driving the filter column 201 to rotate in place; the filter unit 2 further comprises: a cleaning piece 225, the cleaning piece 225 is arranged on the inner shell 202, and the cleaning piece 225 is provided with a cleaning part contacted with the outer wall of the second filter screen 222. Filter post 201 along vertical motion through drive piece 301 drive to the operating condition of control backwashing filter, by two 302 control of drive piece filter post 201 pivot rotations, make clearance piece 225 scrape the outer wall of two 222 filter screens, thereby further clear up two 222 filter screens, wherein, clearance piece 225 can adopt the clearance brush also can adopt the rubber slab.

As shown in fig. 3 and 6, specifically, the second driving member 302 is rotatably mounted at the upper end of the outer shell 1, the first driving member 301 vertically includes two parts, namely a rotating part 303 and a driving part 304, the driving part 304 is connected to the lower end of the rotating part 303 through a bolt, a gap 305 is formed between the rotating part 303 and the driving part 304, the rotating part 303 is disposed above the second driving member 302, the second driving member 302 is provided with a limit block 306, the limit block 306 is inserted into the gap 305, the lower end of the driving part 304 is inserted into the upper end of the filtering hole 223 and is in threaded connection with the filtering hole 223, and a sealing ring is further disposed between the driving part 304 and the filtering hole 223; the second driving member 302 is provided with a plurality of driving blocks 307 protruding toward the filter column 201, the driving blocks 307 are inserted into the slots 226 formed in the filter column 201 along the vertical direction, and when the second driving member 302 is rotated, the filter column 201 is driven to rotate in place by the driving blocks 307.

As shown in fig. 3, the uppermost end of the filter column 201 extends to above the filter hole 223, an external thread is disposed on the periphery of the uppermost end of the filter column 201, the limiting member 224 is screwed on the external thread of the filter column 201, the limiting member 224 is disposed between the inner housing 202 and the second driving member 302, so that the second driving member 302 and the inner housing 202 limit the limit position of the movement of the limiting member 224, and the limiting member 224 is screwed on the filter column 201 for conveniently adjusting the position of the limiting member 224, so as to adjust the limit position of the movement of the filter column 201.

When the various backwashing filters are used, the filtering working states are as follows: rotating the first driving member 301 to enable the first sliding portion 215 and the second sliding portion 217 to move into the first sliding hole 210 at the same time, the third sliding portion 218 to be separated from the second sliding hole 220, the sealing portion 207 to seal the sewage outlet 206, at the moment, liquid enters from the water inlet 204 and enters into the filtering hole 223 through the first opening 216, the first filtering is carried out on the liquid through the first filtering net 221, when the liquid flows out from the second opening 219 to the second sliding hole 220, the second filtering is carried out on the liquid through the second filtering net 222, and the liquid is finally discharged from the water outlet; the sewage discharge working state is as follows: the first driving piece 301 is rotated, so that the second sliding part 217 is separated from the first sliding hole 210, the third sliding part 218 enters the second sliding hole 220, the sewage outlet 206 is in an open state, at the moment, liquid enters from the water inlet 204, and enters the filter hole 223 through the first inlet, and then flows out of the second opening 219 to the second sliding hole 220, since the second sliding hole 220 is isolated from the drain by the third sliding portion 218, the liquid may carry impurities away from the drain 206, in the process, because the liquid must enter the filtering holes 223 to clean the second filtering net 222 from inside to outside, compared with the common filter which directly cleans the outer wall of the filtering net, the back cleaning process is realized, the cleaning effect can be greatly improved, and the second driving piece 302 can be rotated at the same time, so that the filter column 201 rotates, and the cleaning piece 225 cleans the outer wall of the second filter screen 222, thereby further improving the self-cleaning capability of the backwashing filter.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (10)

1. A backwash filter comprising:

an outer housing;

the filter unit, filter unit movable mounting in the shell body, the filter unit includes: the filter column is used for filtering impurities in the liquid;

and the driving unit is arranged on the filtering unit and used for driving the filtering column to move up and down, so that the backwashing filter is switched between a filtering working state and a sewage discharging working state.

2. The backwash filter as in claim 1, wherein the filter unit further comprises: the inner shell body, the inner shell body install in the shell body, the inner shell body is provided with the filter chamber, the side of inner shell body seted up respectively with water inlet, the delivery port of filter chamber intercommunication, the lower extreme of inner shell body seted up with the drain of filter chamber intercommunication, the drain be used for with impurity discharge in the filter chamber, the filter column install in can follow vertical motion in the filter chamber, the filter column be used for with impurity in the liquid filter extremely in the filter chamber, the upper end of filter column is installed the drive unit, the filter column lower extreme is provided with the sealing, the sealing is used for controlling opening and closing of drain.

3. A backwash filter as in claim 2 wherein the seal section comprises: insert post, sealing washer, insert the post clearance and insert and locate in the drain, the sealing washer install in insert the post and be used for with the drain is sealed.

4. The backwashing filter of claim 2 wherein said filter column is slidably inserted into said inner housing, said filter column further being threadably connected to said drive unit.

5. The backwash filter as in claim 4, wherein the filter unit further comprises: the spacer bush is provided with a first sliding hole along the axis, and the water inlet is communicated with the first sliding hole;

the filtration column includes from top to bottom: the filter column comprises a first sliding portion, a first opening, a second sliding portion, a third sliding portion and a second opening, wherein the first sliding portion, the second sliding portion and the third sliding portion are convexly arranged on an annular boss on the outer surface of the filter column, the first sliding portion and the second sliding portion are hermetically and slidably inserted in the first sliding hole, the distance between the first sliding portion and the second sliding portion is smaller than the vertical height of the spacer sleeve, the lower end of the filter cavity is a second sliding hole, the third sliding portion is hermetically and slidably inserted in the inner shell, the diameter of the third sliding portion is larger than that of the first sliding hole, and the distance between the second sliding hole and the first sliding hole is larger than the thickness of the third sliding portion.

6. The backwash filter as in claim 5, wherein the filter unit further comprises: the locating part, the locating part is located the top of interior casing and with it is connected to filter the post, the locating part is used for restricting filter the extreme position of post up-and-down motion.

7. The backwashing filter of claim 6, wherein the filter column is provided with a first filter screen and a second filter screen, the first filter screen covers the first opening, and the second filter screen covers the second opening.

8. The backwash filter as in claim 7, wherein the drive unit comprises: the first driving piece and the second driving piece are rotatably arranged above the outer shell and are in threaded connection with the filtering column, the second driving piece is rotatably arranged at the upper end of the outer shell, and the second driving piece is used for driving the filtering column to rotate in place;

the filter unit further comprises: the cleaning piece is arranged on the inner shell and provided with a cleaning part contacted with the outer wall of the filter screen.

9. The backwashing filter of claim 8, wherein the retaining member is threadedly coupled to a portion of the filter column extending above the inner housing, and the retaining member is disposed between the inner housing and the second driving member.

10. The backwashing filter of claim 8, wherein the second driving member is provided with a driving block protruding toward the filter column, and the driving block is inserted into a corresponding slot of the filter column.

Images