CN109529435B - A but, quick replacement's filter screen for sewage treatment - Google Patents
A but, quick replacement's filter screen for sewage treatment Download PDFInfo
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- CN109529435B CN109529435B CN201811640696.9A CN201811640696A CN109529435B CN 109529435 B CN109529435 B CN 109529435B CN 201811640696 A CN201811640696 A CN 201811640696A CN 109529435 B CN109529435 B CN 109529435B
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- sleeve
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- sewage treatment
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- 239000010865 sewage Substances 0.000 title claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 60
- 238000001914 filtration Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/34—Seals or gaskets for filtering elements
- B01D2201/345—Pressurized seals or gaskets
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to a quick-replaceable filter screen for sewage treatment, which effectively solves the problems that the common filter screen is difficult to replace and the quick-replaceable filter screen has poor sealing performance or is easy to damage a sealing element; the technical scheme of its solution includes that the filter screen is changed through the mode of pull, clean filter screen installation when being taken out from the sewage treatment pipeline completely targets in place by the filter screen of changing, trade filter screen convenient operation is swift, use manpower sparingly and time, seal not only can reach good sealed effect between filter screen and the flange through inflatable seal ring, and can deflate inflatable seal ring earlier when changing the filter screen, the inflatable seal ring who finishes putting does not can not produce the resistance when the pull filter screen, and also can not produce wearing and tearing to inflatable seal ring when the pull filter screen, make inflatable seal ring reuse, resources are saved.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a quick-replaceable filter screen for sewage treatment.
Background
When sewage is treated, large impurities or floating objects in the sewage are firstly filtered, a filter screen is generally used for filtering the sewage, when the filter screen is blocked, the flow of water is blocked, the sewage treatment efficiency is reduced, and when the filter screen is damaged, the large impurities or the floating objects can pass through the filter screen, so that the filtering quality is reduced; the process is numerous and diverse and need many people to cooperate when ordinary filter screen is changed, extravagant manpower and time, quick replacement filter screen exists that sealing performance is not good to cause sewage to leak, perhaps sealed respond well but the resistance that the sealing member produced when changing the filter screen is great, the sealing member can receive the damage so that can not reuse when quick replacement filter screen to cause the waste of resource.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the quick-replaceable filter screen for sewage treatment, and the problems that the common filter screen is difficult to replace and the quick-replaceable filter screen has poor sealing performance or is easy to damage a sealing element are effectively solved.
The technical scheme for solving the problems is that the device comprises a square filter screen, wherein the outer edge surfaces of the left end and the right end of the filter screen are respectively provided with an annular groove, each annular groove is sleeved with an inflatable sealing ring, the left end surface and the right end surface of the filter screen are respectively provided with a groove, each inflatable sealing ring is connected with a first sleeve communicated with an inner cavity of the inflatable sealing ring, the non-connecting end of each first sleeve vertically extends into the groove on the corresponding side, each first sleeve is internally provided with a piston, the piston can move up and down in the first sleeve, and the lower end of the piston is arranged outside the first sleeve; each groove is internally provided with a slide rod which can move left and right and one end of which can extend out of the corresponding groove, each slide rod is fixedly provided with a second sleeve with the outer diameter equal to that of the first sleeve, each second sleeve is internally fixed with a mandril extending out of the upper end of the second sleeve, and each second sleeve is externally sleeved with a third sleeve which can move up and down; an air inlet channel is formed in each sliding rod, and each air inlet channel is communicated with the corresponding second sleeve; the slide bar drives the ejector rod to move to be in contact with the piston through the second sleeve, the piston can be pushed to move upwards, the piston moves upwards to form an interval with the inner wall of the first sleeve, when the central axis of the first sleeve is coincident with the central axis of the second sleeve, the third sleeve can move upwards, when the third sleeve moves to the highest point, the third sleeve is tightly attached to the first sleeve and the second sleeve, at the moment, the inner cavity of the inflatable sealing ring is communicated with the air inlet channel through the first sleeve and the second sleeve, and when the ejector rod moves to be out of contact with the piston, the piston resets and seals the first sleeve.
The invention can not only achieve good sealing effect between the filter screen and the sewage treatment pipeline by using the inflatable sealing ring, but also reduce the resistance when the filter screen is replaced, and can not damage the sealing ring, so that the sealing ring can be repeatedly utilized, resources are saved, the filter screen replacement operation is convenient and quick, the labor and the time are saved, and the sewage treatment efficiency is improved.
Drawings
FIG. 1 is a front sectional view of the present invention.
FIG. 2 is an enlarged view of a portion of the area A in FIG. 1 according to the present invention.
FIG. 3 is an enlarged view of a portion of the area B in FIG. 2 according to the present invention.
FIG. 4 is an enlarged view of a portion of the area C of FIG. 3 according to the present invention.
FIG. 5 is a top view of the stem bar and second sleeve of FIG. 3 according to the present invention.
Fig. 6 is a schematic view of the third sleeve and housing of fig. 2 of the present invention positioned lowermost.
Fig. 7 is a partial enlarged view of the area D in fig. 6 according to the present invention.
FIG. 8 is an enlarged view of a portion of the invention shown in FIG. 7 at E.
FIG. 9 is a schematic view of the ejector pin of FIG. 6 shown disengaged from the piston in accordance with the present invention.
Fig. 10 is a schematic view of the pneumatic sealing ring, boss, first sleeve, piston and first compression spring of fig. 9 according to the present invention.
Fig. 11 is a top view of the filter screen of fig. 1 of the present invention with the inflatable gasket removed.
FIG. 12 is an enlarged view of a portion of the invention shown in FIG. 11 and indicated by the section F.
FIG. 13 is a schematic view of the present invention showing the installation of a filter screen in a sewage treatment pipe.
FIG. 14 is an enlarged view of a portion of the invention in the area G of FIG. 13.
In the above figures, 26 represents a flange on a sewage treatment pipeline, 27 represents a common sealing gasket, and 28 represents bolt holes on a filter screen.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
As can be seen from fig. 1 to 14, the invention comprises a square filter screen 1, wherein the outer edge surfaces of the left and right ends of the filter screen 1 are respectively provided with an annular groove 2, each annular groove 2 is internally sleeved with an inflatable sealing ring 3, the left and right end surfaces of the filter screen 1 are respectively provided with a groove, each inflatable sealing ring 3 is connected with a first sleeve 4 communicated with an internal cavity thereof, the non-connecting end of each first sleeve 4 vertically extends into the groove on the corresponding side, each first sleeve 4 is internally provided with a piston 5, the piston 5 can move up and down in the first sleeve 4, and the lower end of the piston 5 is arranged outside the first sleeve 4; each groove is internally provided with a slide bar 6 which can move left and right and one end of which can extend out of the corresponding groove, each slide bar 6 is fixedly provided with a second sleeve 7 with the outer diameter equal to that of the first sleeve 4, each second sleeve 7 is internally fixed with a mandril 8 which extends out of the upper end of the second sleeve 7, and each second sleeve 7 is externally sleeved with a third sleeve 9 which can move up and down; an air inlet channel 10 is formed in each sliding rod 6, and each air inlet channel 10 is communicated with the corresponding second sleeve 7; the slide bar 6 drives the ejector rod 8 to move to be in contact with the piston 5 through the second sleeve 7, the piston 5 can be pushed to move upwards, the piston 5 moves upwards to form an interval with the inner wall of the first sleeve 4, when the central axis of the first sleeve 4 is coincident with the central axis of the second sleeve 7, the third sleeve 9 can move upwards, the third sleeve 9 is tightly attached to the first sleeve 4 and the second sleeve 7 when moving to the highest point, the inner cavity of the inflatable sealing ring 3 is communicated with the air inlet channel 10 through the first sleeve 4 and the second sleeve 7, and the piston 5 resets and seals the first sleeve 4 when the ejector rod 8 moves to be out of contact with the piston 5.
The bottom of the annular groove 2 is provided with a first through hole communicated with the groove, the first sleeve 4 vertically extends into the groove through the first through hole, the upper end of the first through hole is provided with a conical counter bore with a large upper part and a small lower part, a conical boss 12 in interference fit with the counter bore is arranged in the counter bore, the upper end of the boss 12 is connected with the inflatable sealing ring 3, the lower end of the boss is connected with the first sleeve 4, the boss 12 is provided with an air vent for communicating the first sleeve 4 with the inner cavity of the inflatable sealing ring 3, the first sleeve 4 is connected with the inflatable sealing ring 3 through the boss 12 to fix the first sleeve 4, and the boss 12 is in interference fit with the counter bore to avoid the first sleeve 4 from shaking; a first pressure spring 13 is arranged between the piston 5 and the boss 12, one end of the first pressure spring 13 is connected with the piston 5, the other end of the first pressure spring 13 is connected with the boss 12, and the first pressure spring 13 is fixed on the boss 12 to enable the piston 5 to be more stable when moving up and down; the vertical section of the upper section of the cavity in the first sleeve 4 is in a conical shape with a large top and a small bottom, the vertical section of the upper section of the piston 5 is in a conical shape with a large top and a small bottom, when the slide rod 6 drives the ejector rod 8 to move to be in contact with the piston 5 through the second sleeve 7, the piston 5 is gradually pushed to move upwards, the piston 5 moves upwards to form an interval with the inner wall of the first sleeve 4, and when the ejector rod 8 is separated from the piston 5, the piston 5 resets under the action of the first pressure spring 13 and seals the first sleeve 4.
In order to realize the up-and-down movement and the close attachment of the third sleeve 9 to the corresponding first sleeve 4 and second sleeve 7, the first sleeve 4 and third sleeve 9 are both provided with a shaft shoulder, a plurality of balls 14 positioned above the shaft shoulder are embedded into the circumference of the third sleeve 9, the third sleeve 9 is sleeved with a shell 15 capable of driving the third sleeve to move up and down, a plurality of wedge blocks 16 corresponding to the balls 14 are fixed at the upper end of the shell 15, one side of the upper end of each wedge block 16, which is close to the balls 14, is an inclined plane which is gradually inclined outwards from bottom to top, the smallest common inscribed circle diameter of one side of all the wedge blocks 16 on each shell 15, which is close to the third sleeve 9, is smaller than the corresponding circumscribed circle diameter of all the balls 14 on the third sleeve 9, the largest common inscribed circle diameter of one side of all the wedge blocks 16 on each shell 15, which is close to the third sleeve 9, is larger than the corresponding circumscribed circle diameter of all the balls 14 on the third sleeve 9, a second pressure spring 17 is arranged between the bottom of the shell 15 and the shaft shoulder corresponding to the third sleeve 9, and the shell 15 drives the third sleeve 9 to move upwards through the second pressure spring 17; when the top of the third sleeve 9 contacts with the shaft shoulder of the first sleeve 4, the third sleeve 9 does not move upwards any more, the shell 15 drives the wedge block 16 to move upwards continuously and extrude the balls 14 to enable the third sleeve 9 to be tightly attached to the first sleeve 4 and the second sleeve 7, and when the shell 15 moves downwards, the wedge block 16 firstly moves downwards to contact with the shaft shoulder of the third sleeve 9 and drives the third sleeve 9 to move downwards.
In order to realize the up-and-down movement of the shell 15, a vertical plate 18 is fixed on the sliding rod, a vertical through groove is formed in the vertical plate 18, a transverse plate 19 which penetrates through the vertical plate 18 and can move up and down in the through groove of the vertical plate 18 is fixed on the shell 15, a horizontal T-shaped groove is formed in the lower end face of the transverse plate 19, a T-shaped sliding block which can slide left and right in the T-shaped groove is arranged in the T-shaped groove, a prying bar 21 is hinged to the T-shaped sliding block, a fulcrum is fixed on the sliding bar 6, and the non-hinged end of the prying bar 21 can; the transverse plate 19 can only move vertically through the vertical plate 18 with the vertical through groove, and the transverse plate 19 is prevented from being locked when the pry bar 21 drives the transverse plate 19 to move vertically through the left-right sliding of the T-shaped sliding block.
In order to more conveniently know the condition of the air pressure inside the inflatable sealing rings 3, a horizontal sliding groove is formed in the position, close to each inflatable sealing ring 3, of the filter screen 1, a wedge-shaped sliding block 22 which can slide left and right in the sliding groove and is provided with an inclined surface contacted with the inflatable sealing rings 3 is arranged in the sliding groove, and the inclined surface of the wedge-shaped sliding block 22 inclines outwards from top to bottom; a horizontal second through hole is formed between the bottom of the sliding groove and the end face corresponding to the filter screen 1, a scale 23 capable of sliding left and right in the second through hole is installed in the second through hole, one end of the scale 23 is fixedly connected with the bottom of the wedge-shaped sliding block 22, the other end of the scale 23 can extend out of the filter screen 1, a third pressure spring 24 is sleeved on the scale 23, one end of the third pressure spring 24 is connected with the wedge-shaped sliding block 22, and the other end of the third pressure spring is connected with the bottom of the sliding groove; the inflation and deflation conditions of the inflatable sealing ring 3 can be more accurately reflected by using the wedge-shaped sliding block 22, and meanwhile, when the inflatable sealing ring 3 is deflated, the third pressure spring 24 exerts acting force on the wedge-shaped sliding block 22 to enable the wedge-shaped sliding block 22 to have a downward acting force on the inflatable sealing ring 3, so that the inflatable sealing ring 3 is contracted towards the bottom of the annular groove 2; the scale 23 is marked with a scale corresponding to the inflation seal ring 3 when the inflation seal ring is full of gas and a scale corresponding to the inflation seal ring 3 when the inflation seal ring is completely discharged, and whether the inflation seal ring 3 is full of gas or completely discharged is judged by reading the scales on the scale 23 when the inflation seal ring is discharged.
In order to facilitate the push rod 8 to push the corresponding piston 5 to move upwards, the upper end of the push rod 8 is in a conical shape with a small upper part and a big lower part, so that the push rod 8 is prevented from being blocked when just contacting with the piston 5; the outer diameter of the ejector rod 8 is smaller than the inner diameter of the second sleeve 7, and the ejector rod 8 is fixed on the second sleeve 7 through a plurality of support rods.
In order to facilitate the quick replacement of the filter screen 1, the end part of the slide bar 6 at one side of the filter screen 1, which extends out of the corresponding groove, is annular, and the end part of the slide bar 6 at the other side, which extends out of the corresponding groove, is hook-shaped.
In order to realize the support of the sliding rod 6, a baffle 25 is fixed in each groove, a horizontal third through hole is formed in the baffle 25, the sliding rod 6 can slide left and right in the third through hole on the baffle 25, the cross section of the end part, placed in the groove, of the sliding rod 6 is larger than that of the third through hole, namely, one end, placed in the groove, of the sliding rod 6 cannot pass through the baffle 25, and when the sliding rod 6 is pulled outwards to the limit position, namely, pulled outwards immovably, the central axis of the first sleeve 4 is overlapped with the central axis of the second sleeve 7.
In order to prevent filtered sundries from remaining in the sewage treatment pipeline when the filter screen 1 is replaced, the thickness of the filtering part of the filter screen 1 is thinner than that of the left end and the right end, so that the filtered sundries can be drawn out of the sewage treatment pipeline along with the filter screen 1, and meanwhile, the filtering part is prevented from being abraded when the filter screen 1 is replaced.
The upper end surfaces of the second sleeve 7 and the vertical plate 18 are lower than the lower end surface of the piston 5 when the first sleeve 4 is sealed, so that the second sleeve 7 and the vertical plate 18 are prevented from colliding with the piston 5 when the slide bar 6 moves left and right.
In order to reduce the resistance caused by the inflatable sealing ring 3 when the filter screen 1 is replaced and avoid abrasion of the inflatable sealing ring 3, the inflatable sealing ring 3 is still in a tensioned state after being deflated, namely the inflatable sealing ring 3 is completely arranged in the annular groove 2 when not inflated.
The specific working process of the invention is as follows: when the filter screen 1 needs to be replaced, the slide rod 6 of the replaced filter screen 1 is pulled outwards until the filter screen is not pulled, as shown in fig. 6, at this time, the central axis of the second sleeve 7 coincides with the central axis of the first sleeve 4, the ejector rod 8 is in contact with the lower end face of the piston 5, the piston 5 moves upwards under the action of the ejector rod 8 to form a gap with the inner wall of the first sleeve 4, and because the first sleeve 4 is communicated with the inner cavity of the inflatable sealing ring 3, when the gap exists between the piston 5 and the inner wall of the first sleeve 4, the gas in the inflatable sealing ring 3 is discharged into the atmosphere through the first sleeve 4; along with the gradual reduction of the air pressure in the inflatable seal ring 3, the wedge-shaped sliding block 22 slides towards the inflatable seal ring 3 under the action of the third pressure spring 24, and the scale 23 is fixed on the wedge-shaped sliding block 22, so that the scale 23 slides along with the wedge-shaped sliding block 22, the deflation condition of the inflatable seal ring 3 is judged according to the scales on the scale 23, after the air in the inflatable seal rings 3 at the two ends of the replaced filter screen 1 is completely discharged, the bolts at the left end and the right end of the filter screen 1 are removed, the hook-shaped end of the sliding rod 6 of the clean filter screen 1 is hung on the annular end of the sliding rod 6 of the replaced filter screen 1, the hook-shaped end of the replaced filter screen 1 is pulled, when the replaced filter screen 1 is completely pulled out, the clean filter screen 1 is installed in.
The clean filter screen 1 installed in place is fixed with a flange 26 on a sewage treatment pipeline through bolts, as shown in fig. 13, a slide rod 6 of the clean filter screen 1 is pulled outwards until the clean filter screen is pulled immovably, at the moment, the central axis of a second sleeve 7 is overlapped with the central axis of a first sleeve 4, a piston 5 moves upwards under the action of a mandril 8 to form a gap with the inner wall of the first sleeve 4, as shown in fig. 2, one end of a crowbar 21 extending out of a groove is pressed, as a transverse plate 19 is connected with the other end of the crowbar 21 through a T-shaped sliding block, when one end of the crowbar 21 extending out of the groove moves downwards, the transverse plate 19 moves upwards under the drive of the other end of the crowbar 21, as the transverse bar is fixed on a shell 15, the shell 15 also moves upwards, the shell 15 moves upwards to press a second pressure spring 17 between the bottom of the shell and the shaft shoulder of a third sleeve 9, and the pressed second pressure spring 17 applies an upward acting force to the third, as shown in fig. 3; when the third sleeve 9 moves upwards until the top end of the third sleeve 9 is in contact with the shaft shoulder on the first sleeve 4, the third sleeve 9 does not move upwards any more, the shells 15 continue to move upwards, and since the diameter of the smallest common inscribed circle of one side of all the wedge blocks 16 on each shell 15, which is close to the third sleeve 9, is smaller than the diameter of the circumscribed circle of all the balls 14 on the corresponding third sleeve 9, and the diameter of the largest common inscribed circle of one side of all the wedge blocks 16 on each shell 15, which is close to the third sleeve 9, is larger than the diameter of the circumscribed circle of all the balls 14 on the corresponding third sleeve 9, the wedge blocks 16 on the upper end of the shells 15 start to press the balls 14 on the third sleeve 9, as shown in fig. 4; when the end of the crowbar 21 extending out of the groove reaches the lowest point, that is, the crowbar is pressed downwards and is not moved, at this time, the wedge block 16 fully presses the ball 14, so that the third sleeve 9 is tightly attached to the first sleeve 4 and the second sleeve 7, and a self-locking acting force exists between the wedge block 16 and the ball 14 at this time.
The third sleeve 9 is closely attached to the first sleeve 4 and the second sleeve 7, so that the inner cavity of the inflatable sealing ring 3 is communicated with the air inlet channel 10 through the first sleeve 4 and the second sleeve 7, one end of the sliding rod 6 extending out of the groove is fixedly provided with an air nozzle communicated with the air inlet channel 10, the air nozzle is connected with a high-pressure air source to inflate the inflatable sealing ring 3, the inflatable sealing ring 3 pushes the wedge-shaped sliding block 22 to slide towards the direction far away from the inflatable sealing ring 3 along with the gradual increase of the air pressure in the inflatable sealing ring 3, and at the moment, the third pressure spring 24 is gradually extruded by the corresponding inflatable sealing ring 3, since the scale 23 is fixed to the wedge shoe 22, the scale 23 slides following the wedge shoe 22, judging the inflation condition of the inflatable sealing ring 3 according to the scale on the scale 23, and completely sealing the clean filter screen 1 and the flange 26 on the sewage treatment pipeline when the inflatable sealing ring 3 is full of air; after the inflation is finished, disconnecting the air nozzle from the air source, quickly lifting one end of the crow bar 21 extending out of the groove upwards, driving the shell 15 to move downwards by the other end of the crow bar 21 through the cross bar, when the shell 15 is subjected to a downward acting force, the wedge-shaped block 16 is separated from the corresponding ball 14 and falls on a shaft shoulder of the third sleeve 9, the shell 15 drives the third sleeve 9 to move downwards, the acting force is stopped being applied to the crow bar 21 when the bottom of the third sleeve 9 is contacted with the slide bar 6, and the slide bar 6 is pushed towards the bottom of the groove until the ejector rod 8 is not contacted with the piston 5, as shown in fig. 9; because the inside atmospheric pressure of inflatable seal circle 3 is very big, consequently, there is a decurrent effort to piston 5 up end, first pressure spring 13 also has the decurrent effort to piston 5 simultaneously, piston 5 downstream tightly laminates with the inner wall of first sleeve 4, thereby make inflatable seal circle 3 obtain sealed, can block up the air cock after the completion of aerifing and reopen when aerifing next time, avoid debris to get into the air cock and block up intake duct 10, the inflatable seal circle 3 at both ends all is full of gas and makes inflatable seal circle 3 sealed the change that accomplishes filter screen 1 about clean filter screen 1.
The innovation points of the invention are as follows:
1. the both ends that filter screen 1 is relative and the flange 26 on the sewage treatment pipeline are through bolted connection, consequently only need dismantle the bolt at both ends when dismantling, change filter screen 1 through the mode of pull, clean filter screen 1 when being taken out completely from the sewage treatment pipeline is installed in place by the filter screen 1 who is changed, compares the mounting means of traditional filter screen and can save a lot of time and manpower.
2. Adopt inflatable seal ring 3 to seal up not only can reach good sealed effect between filter screen 1 and the flange 26, and can deflate inflatable seal ring 3 earlier when changing filter screen 1, the inflatable seal ring 3 of putting gas can not produce the resistance when pull filter screen 1, and also can not produce wearing and tearing to inflatable seal ring 3 when pull filter screen 1, if adopt ordinary sealing washer or sealed the pad to want to reach good sealed effect, must can increase the resistance when quick replacement filter screen, can produce wearing and tearing to sealing washer or sealed pad simultaneously, reuse can not again.
3. Form an inclosed space through third sleeve 9 between with contactless first sleeve 4, the second sleeve 7 to make 3 inner chambers of inflatable seal circle through first sleeve 4, second sleeve 7 and intake duct 10 intercommunication, then through arranging the outside air cock of recess in and putting through with high pressurized air source and aerifing for inflatable seal circle 3, can save the space of recess with the air cock setting in the one end of the 6 protractile recesses of slide bar, conveniently aerify for inflatable seal circle 3 simultaneously.
4. After the sealing ring is full of air, the shell 15 can drive the third sleeve 9 to move downwards only by lifting one end of the crow bar 21 extending out of the groove, then the slide rod 6 is pushed towards the bottom of the groove, the piston 5 automatically seals the air-filled sealing ring 3 after the ejector rod 8 is separated from the contact with the piston 5, and the whole process is very fast to operate.
5. Can know the inside atmospheric pressure of inflatable seal 3 constantly through the cooperation of wedge slider 22 and scale 23, not only conveniently fill the operation to the structure when gassing, also conveniently know the condition whether inflatable seal 3 has gas leakage in the filter screen 1 use simultaneously.
6. The inflation and deflation of the inflatable sealing ring 3 adopt the traditional mechanical structure, the operation is simple and convenient, the structure of the inflation and deflation is arranged inside the filter screen, and the occupied space is almost the same as that of the common filter screen.
The invention can achieve good sealing effect by using the inflatable sealing ring, can also reduce the resistance when the filter screen is replaced, can not damage the sealing ring, can repeatedly utilize the sealing ring, saves resources, is convenient and quick to replace the filter screen, saves labor and time, and improves the efficiency of sewage treatment.
Claims (10)
1. A quick-replaceable filter screen for sewage treatment comprises a square filter screen (1) and is characterized in that the outer edge surfaces of the left end and the right end of the filter screen (1) are respectively provided with an annular groove (2), each annular groove (2) is internally sleeved with an inflatable sealing ring (3), the left end surface and the right end surface of the filter screen (1) are respectively provided with a groove, each inflatable sealing ring (3) is connected with a first sleeve (4) communicated with an inner cavity of the inflatable sealing ring, a non-connecting end of each first sleeve (4) vertically extends into the groove on the corresponding side, each first sleeve (4) is internally provided with a piston (5), the piston (5) can move up and down in the first sleeve (4), and the lower end of the piston (5) is arranged outside the first sleeve (4); each groove is internally provided with a slide bar (6) which can move left and right and one end of which can extend out of the corresponding groove, each slide bar (6) is fixedly provided with a second sleeve (7) with the outer diameter equal to that of the first sleeve (4), each second sleeve (7) is internally fixed with a mandril (8) which extends out of the upper end of the second sleeve, and a third sleeve (9) which can move up and down is sleeved outside each second sleeve (7); an air inlet channel (10) is formed in each sliding rod (6), and each air inlet channel (10) is communicated with the corresponding second sleeve (7); the sliding rod (6) drives the ejector rod (8) to move to be in contact with the piston (5) through the second sleeve (7) and can push the piston (5) to move upwards, the piston (5) moves upwards to form an interval with the inner wall of the first sleeve (4), when the central axis of the first sleeve (4) is coincident with the central axis of the second sleeve (7), the third sleeve (9) can move upwards, when the third sleeve (9) moves to the highest point, the first sleeve (4) and the second sleeve (7) are tightly attached, at the moment, the inner cavity of the inflatable sealing ring (3) is communicated with the air inlet channel (10) through the first sleeve (4) and the second sleeve (7), and when the ejector rod (8) moves to be out of contact with the piston (5), the piston (5) resets and seals the first sleeve (4).
2. The filter screen capable of being rapidly replaced for sewage treatment according to claim 1, wherein a first through hole communicated with the groove is formed at the bottom of the annular groove (2), the first sleeve (4) vertically extends into the groove through the first through hole, a tapered counter bore with a large upper end and a small lower end is formed at the upper end of the first through hole, a tapered boss (12) in interference fit with the counter bore is arranged in the counter bore, the upper end of the boss (12) is connected with the inflatable sealing ring (3), the lower end of the boss is connected with the first sleeve (4), and the boss (12) is provided with an air vent for communicating the first sleeve (4) with the inner cavity of the inflatable sealing ring (3); a first pressure spring (13) is arranged between the piston (5) and the boss (12), one end of the first pressure spring (13) is connected with the piston (5), and the other end of the first pressure spring is connected with the boss (12); the vertical section of the upper section of the inner cavity of the first sleeve (4) is in a conical shape with a large upper part and a small lower part, and the vertical section of the upper section of the piston (5) is in a conical shape with a large upper part and a small lower part.
3. The filter screen capable of being replaced quickly for sewage treatment according to claim 1, wherein a shaft shoulder is arranged on each of the first sleeve (4) and the third sleeve (9), a plurality of balls (14) located above the shaft shoulder are embedded into the upper circumference of the third sleeve (9), a shell (15) capable of driving the third sleeve (9) to move up and down is sleeved outside the third sleeve (9), a plurality of wedge blocks (16) corresponding to the balls (14) one by one are fixed at the upper end of the shell (15), one side, close to the balls (14), of the upper end of each wedge block (16) is an inclined plane which is inclined outwards gradually from bottom to top, the diameter of the smallest common inscribed circle of one side, close to the third sleeve (9), of all wedge blocks (16) on each shell (15) is smaller than the diameter of the circumscribed circle of all balls (14) on the corresponding third sleeve (9), and the diameter of the largest common inscribed circle of one side, close to the third sleeve (9), of all wedge blocks (16) on each shell (15) is larger than the diameter of the largest common inscribed The diameters of the circumcircles of all the balls (14) on the corresponding third sleeve (9) are equal, a second pressure spring (17) is arranged between the bottom of the shell (15) and the shaft shoulder corresponding to the third sleeve (9), and the shell (15) drives the third sleeve (9) to move upwards through the second pressure spring (17).
4. A quick-replaceable filter screen for sewage treatment according to claim 3, wherein the slide bar (6) is fixed with a vertical plate (18), the vertical plate (18) is provided with a vertical through groove, the housing (15) is fixed with a horizontal plate (19) which penetrates through the vertical plate (18) and can move up and down in the through groove of the vertical plate (18), the lower end surface of the horizontal plate (19) is provided with a horizontal T-shaped groove, a T-shaped slide block which can slide left and right in the T-shaped groove is arranged in the horizontal groove, the T-shaped slide block is hinged with a pry bar (21) which is fixed on the slide bar (6) at a pivot point, and the non-hinged end of the pry bar (21) can extend out of the corresponding groove.
5. The utility model discloses a but, a quick replacement's filter screen for sewage treatment, a serial communication port, filter screen (1) on every inflatable seal circle (3) near the position all open a horizontal spout, be equipped with one in the spout and can be in its inside horizontal slip and inclined plane and inflatable seal circle (3) contact wedge slider (22), the inclined plane of wedge slider (22) from top to bottom outwards inclines, wedge slider (22) are fixed with one and can stretch out filter screen (1) and scale (23) on being close to the terminal surface of spout bottom, the cover has a third pressure spring (24) on scale (23), the one end and the wedge slider (22) of third pressure spring (24) are connected, the other end is connected with the spout bottom.
6. The filter screen capable of being rapidly replaced for sewage treatment according to claim 1, wherein the upper end of the ejector rod (8) is a cone with a small upper end and a large lower end, the outer diameter of the ejector rod (8) is smaller than the inner diameter of the second sleeve (7), and the ejector rod (8) is fixed on the second sleeve (7) through a plurality of support rods.
7. A quick-change filter screen for sewage treatment according to claim 1, characterised in that the slide bars (6) of the filter screen (1) are of annular shape at the ends extending out of the corresponding grooves and of hook shape at the ends extending out of the corresponding grooves.
8. A quick-replaceable filter screen for sewage treatment according to claim 1, wherein a baffle (25) is fixed in each groove, a through hole is formed in the baffle (25), the slide rod (6) can slide left and right in the through hole of the baffle (25), and the cross section of the end part of the slide rod (6) placed in the groove is larger than that of the through hole.
9. The filter screen for sewage treatment capable of being rapidly replaced according to claim 1, wherein the thickness of the filtering portion of the filter screen (1) is thinner than that of the left and right ends.
10. The filter screen for sewage treatment capable of being replaced rapidly according to claim 1, wherein the upper end surfaces of the second sleeve (7) and the vertical plate (18) are lower than the lower end surface of the piston (5) when the first sleeve (4) is sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640696.9A CN109529435B (en) | 2018-12-29 | 2018-12-29 | A but, quick replacement's filter screen for sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640696.9A CN109529435B (en) | 2018-12-29 | 2018-12-29 | A but, quick replacement's filter screen for sewage treatment |
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| Publication Number | Publication Date |
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| CN109529435A CN109529435A (en) | 2019-03-29 |
| CN109529435B true CN109529435B (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811640696.9A Active CN109529435B (en) | 2018-12-29 | 2018-12-29 | A but, quick replacement's filter screen for sewage treatment |
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| CN (1) | CN109529435B (en) |
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| CN202700218U (en) * | 2012-08-03 | 2013-01-30 | 淮南舜泰化工有限责任公司 | Stainless steel filter |
| CN103978655A (en) * | 2014-05-26 | 2014-08-13 | 宣威市中博塑料有限公司 | Device capable of quickly replacing filtration screen |
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| KR20170052092A (en) * | 2015-11-03 | 2017-05-12 | 한전케이피에스 주식회사 | Sealing device for drive shaft of debris filter and installation method thereof |
| CN206705900U (en) * | 2017-03-29 | 2017-12-05 | 惠州市恒源环保技术开发有限公司 | A kind of sewage disposal device for being convenient for changing screen pack |
| CN107487536A (en) * | 2017-09-23 | 2017-12-19 | 柴卓 | The holding vessel of metal surface efficient antiseptic |
| CN107789881A (en) * | 2017-11-17 | 2018-03-13 | 盱眙县生产力促进中心 | A kind of smart home sewage-treatment plant of replaceable filter screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4568460A (en) * | 1982-08-05 | 1986-02-04 | Bratten Jack R | Filter apparatus and method |
| CN202700218U (en) * | 2012-08-03 | 2013-01-30 | 淮南舜泰化工有限责任公司 | Stainless steel filter |
| CN103978655A (en) * | 2014-05-26 | 2014-08-13 | 宣威市中博塑料有限公司 | Device capable of quickly replacing filtration screen |
| CN106152325A (en) * | 2015-03-26 | 2016-11-23 | 深圳地球村环保产业有限公司 | A kind of filter dirt ventilator |
| KR20170052092A (en) * | 2015-11-03 | 2017-05-12 | 한전케이피에스 주식회사 | Sealing device for drive shaft of debris filter and installation method thereof |
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|---|---|
| CN109529435A (en) | 2019-03-29 |
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