CN109529434B - But quick replacement's sewage filter screen - Google Patents
But quick replacement's sewage filter screen Download PDFInfo
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- CN109529434B CN109529434B CN201811640679.5A CN201811640679A CN109529434B CN 109529434 B CN109529434 B CN 109529434B CN 201811640679 A CN201811640679 A CN 201811640679A CN 109529434 B CN109529434 B CN 109529434B
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- filter screen
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- pressure spring
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- 239000010865 sewage Substances 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 75
- 238000001914 filtration Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 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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Classifications
-
- 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 sewage filter screen capable of being quickly replaced, which effectively solves the problems that a common filter screen is difficult to replace and the sealing performance of the quickly replaced filter screen is poor or a sealing element is easy to damage; 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 sewage filter screen capable of being quickly replaced.
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 sewage filter screen capable of being quickly replaced, and the problems that the common filter screen is difficult to replace and the quick replacement filter screen is poor in sealing performance or a sealing element is easy to damage 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, and a piston capable of moving up and down in each first sleeve is arranged in each first sleeve; each groove is internally provided with a slide bar which can move left and right and one end of which can extend out of the corresponding groove, the interior of each slide bar is provided with an air inlet channel, each slide bar is fixedly provided with a cylinder which is arranged below the first sleeve and has two open ends, the cylinder is internally sleeved with a second sleeve which can move up and down, the inner wall of the lower end of the second sleeve is fixedly provided with an inner conical sleeve, the second sleeve is internally provided with a mandril which can move up and down and has the lower end penetrating through the slide bar, and the mandril is fixedly provided with a conical plug which can be contacted with the inner conical sleeve; when the conical plug is contacted with the inner conical sleeve, a closed cavity communicated with the air inlet channel is formed between the bottom of the second sleeve and the cylinder, when the central axes of the first sleeve and the second sleeve are coincident, the second sleeve and the ejector rod move upwards together until the upper end face of the second sleeve is in sealing contact with the lower end face of the first sleeve, at the moment, the conical plug and the inner conical sleeve begin to be separated, the ejector rod moves upwards alone and enables a gap to be formed between the piston and the inner wall of the first sleeve, and the air inlet channel is communicated with the inner cavity of the inflatable sealing ring through the cylinder, the second sleeve and the first sleeve; when the second sleeve is reset downwards and is separated from contact with the first sleeve, and the ejector rod is reset downwards and is separated from contact with the piston, the piston resets and seals the first sleeve, and the air inlet channel is not communicated with the inflatable sealing ring at the moment.
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.
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 an enlarged view of a portion of the area D in FIG. 4 according to the present invention.
FIG. 6 is a schematic view showing the second sleeve of FIG. 2 being blocked by the L-shaped plate and the ram moving upward independently to space the piston from the inner wall of the first sleeve.
FIG. 7 is an enlarged view of a portion of the invention shown in FIG. 6 at E.
Fig. 8 is a partial enlarged view of the area F in fig. 7 according to the present invention.
FIG. 9 is a schematic view of the plunger of FIG. 6 being pushed toward the bottom of the recess after the plunger is disengaged from the piston.
FIG. 10 is an enlarged view of a portion of the invention in the area G of FIG. 9.
FIG. 11 is an enlarged view of a portion of the invention in the area H of FIG. 10.
Fig. 12 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. 13 is a top view of the filter screen of fig. 1 of the present invention with the inflatable gasket removed.
FIG. 14 is an enlarged view of a portion of the area I of FIG. 13 according to the present invention.
Fig. 15 is a schematic view of the present invention in which a filter net 1 is installed in a sewage treatment pipe.
FIG. 16 is an enlarged view of a portion of the invention shown in FIG. 15 in the area J.
FIG. 17 is an enlarged view of a portion of the invention in the area H of FIG. 16.
In the above figures, 32 represents a flange on the sewage treatment pipeline, 33 represents a third sealing gasket, and 34 represents bolt holes on the 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 17, the invention comprises a square filter screen 1, 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 the inner cavity thereof, the non-connecting end of each first sleeve 4 vertically extends into the groove of the corresponding side, and a piston 5 capable of moving up and down in each first sleeve 4 is arranged in 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, an air inlet channel 12 is arranged inside each slide bar 6, each slide bar 6 is fixedly provided with a cylinder 7 which is arranged below the first sleeve 4 and has two open ends, a second sleeve 8 which can move up and down is sleeved in the cylinder 7, the inner wall of the lower end of the second sleeve 8 is fixedly provided with an inner conical sleeve 9, the second sleeve 8 is internally provided with an ejector rod 10 which can move up and down and has the lower end penetrating through the slide bar 6, and the ejector rod 10 is fixedly provided with a conical plug 11 which can be contacted with the inner conical sleeve 9; when the conical plug 11 is contacted with the inner conical sleeve 9, a closed cavity communicated with the air inlet channel 12 is formed between the bottom of the second sleeve 8 and the cylinder 7, when the central axes of the first sleeve 4 and the second sleeve 8 are coincided, the second sleeve 8 and the ejector rod 10 move upwards together until the upper end surface of the second sleeve 8 is in sealing contact with the lower end surface of the first sleeve 4, at the moment, the conical plug 11 and the inner conical sleeve 9 start to be separated, the ejector rod 10 moves upwards independently and enables a gap to be formed between the piston 5 and the inner wall of the first sleeve 4, and the air inlet channel 12 is communicated with the inner cavity of the inflatable sealing ring 3 through the cylinder 7, the second sleeve 8 and the first sleeve 4; when the second sleeve 8 is reset downwards to be separated from contact with the first sleeve 4 and the ejector rod 10 is reset downwards to be separated from contact with the piston 5, the piston 5 resets and seals the first sleeve 4, and at the moment, the air inlet channel 12 is not communicated with the inflating sealing ring 3.
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 13 in interference fit with the counter bore is arranged in the counter bore, the upper end of the boss 13 is connected with the inflatable sealing ring 3, the lower end of the boss is connected with the first sleeve 4, the boss 13 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 13 so that the first sleeve 4 is fixed, and the boss 13 is in interference fit with the counter bore to avoid the first sleeve 4 from shaking; a first pressure spring 14 is arranged between the piston 5 and the boss 13, one end of the first pressure spring 14 is connected with the piston 5, the other end of the first pressure spring 14 is connected with the boss 13, and the first pressure spring 14 is fixed on the boss 13 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 sliding rod 6 drives the ejector rod 10 to move to be in contact with the piston 5 through the second sleeve 8, 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 10 is separated from the piston 5, the piston 5 resets under the action of the first pressure spring 14 and seals the first sleeve 4.
In order to manually push the top rod 10 to move up and down, a vertical plate 15 is fixed on the slide rod 6, a vertical through groove is formed in the vertical plate 15, a transverse plate 16 which penetrates through the vertical plate 15 and can move up and down in the through groove of the vertical plate 15 is fixed at the lower end of the top rod 10, a horizontal first inverted T-shaped groove is formed in the upper end surface of the transverse plate 16, an inverted T-shaped block 17 which can slide left and right in the first inverted T-shaped groove is arranged in the first inverted T-shaped groove, a prying bar 18 with a fulcrum fixed on the slide rod 6 is hinged to the T-shaped block 17, and a non-hinged end of the prying bar 18 can extend out of a corresponding groove; pressing one end of the crowbar 18 extending out of the groove to enable the ejector rod 10 to move upwards, and lifting one end of the crowbar 18 extending out of the groove to enable the ejector rod 10 to move downwards and be separated from the contact with the piston 5; the transverse plate 16 can only move vertically through the vertical plate 15 with the vertical through groove, and the transverse plate 16 is prevented from being locked when the crow bar 18 drives the transverse plate 16 to move vertically through the left-right sliding of the T-shaped block 17.
The diameter of an opening at the top of the cylinder 7 is smaller than the inner diameter of the cylinder, the diameter of an opening at the bottom of the cylinder 7 is equal to the inner diameter of the cylinder, a shaft shoulder is arranged on the second sleeve 8, a plurality of second pressure springs 19 are arranged between the shaft shoulder of the second sleeve 8 and the top of the cylinder 7, one end of each second pressure spring 19 is connected with the shaft shoulder of the second sleeve 8, and the other end of each second pressure spring is connected with the upper end of the cylinder 7; a third pressure spring 20 is sleeved at the lower end of the ejector rod 10, one end of the third pressure spring 20 is connected with the transverse plate 16, and the other end of the third pressure spring can be in contact with the slide rod 6; the second compression spring 19 can reset the second sleeve 8 downwards to be out of contact with the first sleeve 4, and the third compression spring 20 can reset the mandril 10 downwards to be out of contact with the piston 5.
A second inverted T-shaped groove is formed in the upper end face of the sliding rod 6, an inverted L-shaped plate 21 capable of sliding left and right in each second inverted T-shaped groove is arranged in each second inverted T-shaped groove, a transverse plate 16 of each L-shaped plate 21 can be placed above the corresponding second sleeve 8 and can prevent the corresponding second sleeve 8 from moving upwards, and a push rod 22 capable of extending out of the corresponding groove is fixed on a vertical plate of each L-shaped plate 21; the inner cavity of the inner conical sleeve 9 is conical with a large upper part and a small lower part, a plurality of radial first sliding grooves are uniformly distributed on the circumference of the conical surface of the inner conical sleeve 9, a clamping block 23 which can radially slide in each first sliding groove and can extend out of the corresponding first sliding groove is arranged in each first sliding groove, a fourth pressure spring 24 is arranged between each clamping block 23 and the corresponding first sliding groove, one end of each fourth pressure spring 24 is connected with the clamping block 23, and the other end of each fourth pressure spring 24 is connected with the bottom of the corresponding first sliding groove; the conical plug 11 is conical with a large upper part and a small lower part, a plurality of clamping grooves which correspond to the clamping blocks 23 one by one are uniformly distributed on the outer edge surface of the conical plug 11, one ends of the clamping blocks 23 extending out of the first sliding grooves are arc-shaped and can extend into the clamping grooves, and the bottoms of the clamping grooves are arc-shaped, so that the clamping blocks 23 and the clamping grooves are prevented from being clamped; when one end of the fixture block 23 extending out of the first chute is arranged in the corresponding clamping groove, the conical plug 11 is tightly attached to the inner conical sleeve 9, the second sleeve 8 and the ejector rod 10 can move up and down together, when the second sleeve 8 moves upwards until the upper end face of the second sleeve 8 contacts with the lower end face of the first sleeve 4, the upward movement of the second sleeve 8 is blocked, the fixture block 23 extrudes the fourth pressure spring 24 to separate from the clamping groove so that the ejector rod 10 can continue to move upwards, when the upward movement of the second sleeve 8 and the ejector rod 10 is not required, the push rod 22 is pushed to enable the L-shaped plate 21 to move towards the direction of the second sleeve 8 and enable the transverse plate 16 of the L-shaped plate 21 to be arranged above the second sleeve 8, so that the upward movement of the second sleeve 8 is blocked by the L-shaped plate 21, at the moment, the fixture block 23 extrudes the fourth pressure spring 24 to separate from the clamping groove so that the ejector rod 10 can continue to move upwards, the ejector rod 10 moves upwards to enable the conical plug 11 and the inner conical sleeve 9 to form an interval, meanwhile, the ejector rod 10 pushes the piston 5 to move upwards, so that a gap is formed between the piston 5 and the inner wall of the first sleeve 4, and in the process, the L-shaped plate 21 is used for preventing the second sleeve 8 from moving upwards together with the ejector rod 10, so that work can be reduced.
In order to more conveniently know the condition of the air pressure inside the inflatable sealing rings 3, a horizontal second chute is formed in the position, close to each inflatable sealing ring 3, of the filter screen 1, a wedge-shaped sliding block 25 which can slide left and right in the second chute is arranged in the second chute, the inclined plane of the wedge-shaped sliding block 25 is in contact with the inflatable sealing rings 3, and the inclined plane of the wedge-shaped sliding block 25 inclines outwards from top to bottom; a horizontal second through hole is formed between the bottom of the second chute and the end face corresponding to the filter screen 1, a scale 26 capable of sliding left and right in the second through hole is installed in the second through hole, one end of the scale 26 is fixedly connected with the bottom of the wedge-shaped sliding block 25, the other end of the scale 26 can extend out of the filter screen 1, a fifth pressure spring 27 is sleeved on the scale 26, one end of the fifth pressure spring 27 is connected with the wedge-shaped sliding block 25, and the other end of the fifth pressure spring 27 is connected with the bottom of the second chute; the end face of the wedge-shaped sliding block 25, which is in contact with the inflatable sealing ring 3, is an inclined plane, so that the inflation and deflation conditions of the inflatable sealing ring 3 can be more accurately reflected, and meanwhile, when the inflatable sealing ring 3 is deflated, the fifth pressure spring 27 exerts an acting force on the wedge-shaped sliding block 25, so that the wedge-shaped sliding block 25 has a downward acting force on the inflatable sealing ring 3, and the inflatable sealing ring 3 is contracted towards the bottom of the annular groove 2; the scale 26 is marked with a scale corresponding to the inflation seal ring 3 when the inflation seal ring 3 is full of gas and a scale corresponding to the inflation seal ring 3 when the inflation seal ring 3 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 26 when the inflation seal ring is discharged.
A first sealing gasket 28 is fixed on the upper end surface of the second sleeve 8, so that air leakage at the position where the upper end surface of the second sleeve 8 is contacted with the lower end surface of the first sleeve 4 in the process of inflating the inflatable sealing ring 3 is prevented; an annular groove is formed in the outer circular surface of the shaft shoulder of the second sleeve 8, a common sealing ring 29 is arranged in the annular groove, air leakage at the position where the shaft shoulder of the second sleeve 8 is contacted with the inner wall of the cylinder 7 in the inflating process of the inflating sealing ring 3 is prevented, and a closed cavity communicated with the air inlet 12 is formed between the bottom of the second sleeve 8 and the cylinder 7 when the conical plug 11 is matched with the inner conical sleeve 9; the sliding rod 6 is provided with a vertical third through hole, the ejector rod 10 can move up and down in the third through hole, and a second sealing gasket 30 is fixed at the position, penetrating out of the ejector rod 10, on the lower end face of the sliding rod 6, so that air leakage at the third through hole in the inflating process of the inflating sealing ring 3 is prevented.
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 support the sliding rod 6, a baffle 31 is fixed in each groove, a fourth through hole is formed in the baffle 31, the sliding rod 6 can slide left and right in the fourth through hole in the baffle 31, the cross section of the end part, placed in the groove, of the sliding rod 6 is larger than that of the fourth through hole, namely, one end, placed in the groove, of the sliding rod 6 cannot pass through the baffle 31, and when the sliding rod 6 is pulled outwards to a limit position, namely, the sliding rod 6 is pulled outwards, the central axis of the first sleeve 4 is overlapped with the central axis of the second sleeve 8.
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 cylinder 7 and the vertical plate 15 are lower than the lower end surface of the first sleeve 4, so that the cylinder 7 and the vertical plate 15 are prevented from colliding with the first sleeve 4 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 of the replaced filter screen 1 is pulled outwards until the slide rod is not pulled, at this time, the central axis of the second sleeve 8 coincides with the central axis of the first sleeve 4, the push rod 22 is pushed to move the L-shaped plate 21 towards the cylinder 7 to the end of the second inverted T-shaped groove close to the sleeve, at this time, the transverse plate 16 of the L-shaped plate 21 can block the second sleeve 8 from moving upwards, as shown in fig. 6, one end of the pry bar 18 extending out of the groove is pressed downwards, because the transverse plate 16 is connected with the other end of the pry bar 18 through the inverted T-shaped block 17, when one end of the pry bar 18 extending out of the groove moves downwards, the transverse plate 16 moves upwards under the driving of the other end of the pry bar 18, because the transverse plate 16 is fixedly connected with the lower end of the push rod 10, the push rod 10 moves upwards, and the tapered plug 11 on the push rod 10 is just started to be tightly attached to the tapered sleeve 9 on the second sleeve 8, so that the second sleeve 8 and the push rod 10 move upwards together, when the second sleeve 8 moves upwards and is blocked by the L-shaped plate 21, the clamping block 23 is separated from the corresponding clamping groove, the conical plug 11 is separated from the inner conical sleeve 9, the ejector rod 10 independently moves upwards and pushes the piston 5 to move upwards, the piston 5 moves upwards and forms a gap with the inner wall of the first sleeve 4, and the first sleeve 4 is communicated with the inner cavity of the inflatable sealing ring 3, so that when the piston 5 and the inner wall of the first sleeve 4 form a gap, 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 slide block 25 slides towards the inflatable seal ring 3 under the action of the fifth pressure spring 27, and the scale 26 is fixed on the wedge-shaped slide block 25, so that the scale 26 slides along with the wedge-shaped slide block 25, the deflation condition of the inflatable seal ring 3 is judged according to the scale on the scale 26, 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 slide rod of the clean filter screen 1 is hung on the annular end of the slide 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 place, and the replaced filter screen 1 is detached.
In the process of deflating the inflatable sealing ring 3, if the L-shaped plate 21 is not used for blocking the second sleeve 8, the prying bar 18 is pressed to enable the ejector rod 10 to drive the second sleeve 8 to move upwards to the position where the upper end face of the second sleeve 8 is in contact with the lower end face of the first sleeve 4, the conical plug 11 is separated from the inner conical sleeve 9, the second pressure spring 19 is compressed and deformed when the second sleeve 8 moves upwards, and therefore when the conical plug 11 is separated from the inner conical sleeve 9, the second pressure spring 19 enables the second sleeve 8 to reset downwards, the inflatable sealing ring 3 can still be deflated, and the L-shaped plate 21 is used for blocking the second sleeve 8 to reduce work.
The clean filter screen 1 installed in place is fixed with a flange 32 on a sewage treatment pipeline through bolts, as shown in fig. 15, a slide rod 6 of the clean filter screen 1 is pulled outwards until the slide rod is fixed, at the moment, the central axis of a second sleeve 8 is overlapped with the central axis of a first sleeve 4, one end, extending out of a groove, of a prying bar 18 is lifted upwards to reach the highest point so as to ensure that a conical plug 11 on a mandril 10 is tightly attached to an inner conical sleeve 9 on the second sleeve 8, and a push rod 22 is pulled outwards so as to ensure that an L-shaped plate 21 cannot block the second sleeve 8 from moving upwards, as shown in fig. 2; an air tap communicated with an air inlet channel 12 is fixed at one end of the sliding rod 6 extending out of the groove, the air tap is connected with a high-pressure air source to inflate the inflatable sealing ring 3, a closed cavity communicated with the air inlet channel 12 can be formed between the bottom of the second sleeve 8 and the cylinder 7 when the conical plug 11 is matched with the conical sleeve, therefore, high-pressure air enters the closed cavity through the air inlet channel 12 and then starts to push the second sleeve 8 and the ejector rod 10 to move upwards together, when the second sleeve 8 moves upwards until the upper end face of the second sleeve contacts with the lower end face of the first sleeve 4, the upward movement of the second sleeve 8 is blocked, along with the gradual increase of the air pressure in the cylinder 7 below the shaft shoulder of the second sleeve 8, the clamping block 23 is separated from the clamping groove to enable the ejector rod 10 to continue to move upwards, the conical plug 11 is separated from the inner conical sleeve 9, at the moment, a gap is generated between the conical plug 11 and the inner conical sleeve 9, the piston 5 moves upwards under the pushing of the ejector rod 10 and generates a gap with the inner wall of the first sleeve 4, the air inlet channel 12 is communicated with the inner cavity of the inflatable sealing ring 3 through the cylinder 7, the second sleeve 8 and the first sleeve 4, and air enters the inner cavity of the inflatable sealing ring 3; along with the atmospheric pressure in the inflatable seal circle 3 increases gradually, inflatable seal circle 3 promotes wedge slider 25 and slides towards the direction of keeping away from inflatable seal circle 3, and fifth pressure spring 27 receives the extrusion that corresponds inflatable seal circle 3 gradually this moment, because scale 26 is fixed on wedge slider 25, therefore scale 26 slides along with wedge slider 25, judge the gas filled condition of inflatable seal circle 3 according to the scale on scale 26, can make completely sealed between clean filter screen 1 and the flange 32 on the sewage treatment pipeline when inflatable seal circle 3 is full of gas.
Because the second compression spring 19 generates compression deformation when the second sleeve 8 moves upwards, the third compression spring 20 generates compression deformation when the mandril 10 moves upwards, therefore, when the air nozzle is disconnected from the high-pressure air source after the inflation is finished, the air pressure in the air inlet channel 12 and the cylinder 7 is rapidly reduced, the second sleeve 8 is reset downwards under the action of the second pressure spring 19 to be separated from the contact with the first sleeve 4, the ejector rod 10 is also reset downwards under the action of the third pressure spring 20 to be separated from the contact with the piston 5, because the air pressure in the inflatable sealing ring 3 is very high, a downward acting force is exerted on the upper end surface of the piston 5, meanwhile, the first pressure spring 14 also has downward acting force on the piston 5, the piston 5 moves downward and is tightly attached to the inner wall of the first sleeve 4, therefore, the air-filled sealing rings 3 at the left end and the right end of the filter screen 1 which are sealed completely are all filled with air, and the air-filled sealing rings 3 are sealed, so that the filter screen 1 is replaced.
After the filter screen 1 is replaced, the air faucet plug can be plugged until the filter screen is inflated next time, so that sundries are prevented from entering the air faucet plug air inlet 12, meanwhile, the slide rod 6 is pushed towards the bottom of the groove, and as shown in fig. 9, the phenomenon that the push rod 10 pushes the piston 5 to move upwards to cause air leakage of the inflatable sealing ring 3 due to the fact that the prying bar 18 is pressed carelessly is avoided.
The innovation points of the invention are as follows:
1. the both ends that filter screen 1 is relative and the flange 32 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 traditional filter screen 1's mounting means 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 32, 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 29 or sealed the pad to want to reach good sealed effect, must can increase the resistance when quick replacement filter screen 1, can produce wearing and tearing to sealing washer or sealed pad simultaneously, can not reuse again.
3. High pressure through high pressurized air source production promotes second sleeve 8 and ejector pin 10 and upwards removes, second sleeve 8 upwards moves to with the contact of the terminal surface under the first sleeve 4, ejector pin 10 upwards moves and can promote to produce the interval between piston 5 and the 4 inner walls of first sleeve, make simultaneously between toper stopper 11 and the interior toper cover 9 produce the interval, thereby realize aerifing for inflatable seal 3, inflatable seal 3 accomplishes and aerifys back second sleeve 8 and ejector pin 10 and can move down automatically, piston 5 self sealing inflatable seal 3, do not need the manual operation promptly in-process.
4. The ejector rod 10 can move up and down together with the second sleeve 8, and can also move up independently, and when the inflatable sealing ring 3 is deflated, only the ejector rod 10 needs to move up independently to push the piston 5 to deflate.
5. Can know the inside atmospheric pressure of inflatable seal 3 constantly through the cooperation of wedge slider 25 and scale 26, not only conveniently fill the operation to the structure when exitting, 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 1, and the occupied space is almost the same as that of the common filter screen 1.
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 (9)
1. A sewage filter screen capable of being replaced quickly 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 seal ring (3), the left end surface and the right end surface of the filter screen (1) are respectively provided with a groove, each inflatable seal ring (3) is connected with a first sleeve (4) communicated with an inner cavity of the inflatable seal ring, the non-connecting end of each first sleeve (4) vertically extends into the groove on the corresponding side, and a piston (5) capable of moving up and down in each first sleeve (4) is arranged in each first sleeve; 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, an air inlet channel (12) is arranged inside each slide bar (6), each slide bar (6) is fixedly provided with a cylinder (7) which is arranged below the first sleeve (4) and has two open ends, a second sleeve (8) which can move up and down is sleeved in the cylinder (7), an inner conical sleeve (9) is fixed on the inner wall of the lower end of the second sleeve (8), a mandril (10) which can move up and down and has the lower end penetrating through the slide bar (6) is arranged in the second sleeve (8), and a conical plug (11) which can be contacted with the inner conical sleeve (9) is fixed on the mandril (10); when the conical plug (11) is in contact with the inner conical sleeve (9), a closed cavity communicated with the air inlet channel (12) is formed between the bottom of the second sleeve (8) and the cylinder (7), when the central axes of the first sleeve (4) and the second sleeve (8) are overlapped, the second sleeve (8) and the ejector rod (10) move upwards together until the upper end face of the second sleeve (8) is in sealing contact with the lower end face of the first sleeve (4), at the moment, the conical plug (11) and the inner conical sleeve (9) start to be separated, the ejector rod (10) moves upwards independently and enables the piston (5) and the inner wall of the first sleeve (4) to form a gap, and the air inlet channel (12) is communicated with the inner cavity of the inflatable sealing ring (3) through the cylinder (7), the second sleeve (8) and the first sleeve (4); when the second sleeve (8) is reset downwards to be separated from contact with the first sleeve (4) and the ejector rod (10) is reset downwards to be separated from contact with the piston (5), the piston (5) is reset and seals the first sleeve (4), and the air inlet channel (12) is not communicated with the inflating sealing ring (3);
the end part of the sliding rod (6) on one side of the filter screen (1) extending out of the corresponding groove is annular, and the end part of the sliding rod (6) on the other side extending out of the corresponding groove is hook-shaped.
2. The sewage filter screen capable of being replaced rapidly 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 (13) in interference fit with the counter bore is arranged in the counter bore, the upper end of the boss (13) is connected with the inflatable sealing ring (3), the lower end of the boss (13) is connected with the first sleeve (4), a vent hole for communicating the first sleeve (4) with the inner cavity of the inflatable sealing ring (3) is formed in the boss (13), and the first sleeve (4) is connected with the inflatable sealing ring (3) through the boss (13) so that the first sleeve (4) is fixed; a first pressure spring (14) is arranged between the piston (5) and the boss (13), one end of the first pressure spring (14) is connected with the piston (5), and the other end of the first pressure spring is connected with the boss (13); 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 sewage filter screen capable of being replaced quickly according to claim 1, wherein a vertical plate (15) is fixed on the slide bar (6), a vertical through groove is formed in the vertical plate (15), a transverse plate (16) which penetrates through the vertical plate (15) and can move up and down in the through groove of the vertical plate (15) is fixed at the lower end of the ejector rod (10), a horizontal first inverted T-shaped groove is formed in the upper end surface of the transverse plate (16), an inverted T-shaped block (17) which can slide left and right in the first inverted T-shaped groove is arranged in the first inverted T-shaped groove, a prying bar (18) with a fulcrum fixed on the slide bar (6) is hinged to the T-shaped block (17), and a non-hinged end of the prying bar (18) can extend out of a corresponding groove.
4. The sewage filter screen capable of being replaced rapidly according to claim 1, wherein the diameter of the opening at the top of the cylinder (7) is smaller than the inner diameter of the cylinder, the diameter of the opening at the bottom of the cylinder (7) is equal to the inner diameter of the cylinder, a shaft shoulder is arranged on the second sleeve (8), a plurality of second pressure springs (19) are arranged between the shaft shoulder of the second sleeve (8) and the top of the cylinder (7), one end of each second pressure spring (19) is connected with the shaft shoulder of the second sleeve (8), and the other end of each second pressure spring is connected with the upper end of the cylinder (7); a third pressure spring (20) is sleeved at the lower end of the ejector rod (10), one end of the third pressure spring (20) is connected with the transverse plate (16), and the other end of the third pressure spring can be contacted with the slide rod (6).
5. The sewage filter screen capable of being replaced rapidly according to claim 1, wherein the upper end surface of the slide bar (6) is provided with a second inverted T-shaped groove, each second inverted T-shaped groove is internally provided with an inverted L-shaped plate (21) capable of sliding left and right inside, a transverse plate (16) of the L-shaped plate (21) can be placed above the second sleeve (8) and can prevent the second sleeve (8) from moving upwards, and a push rod (22) capable of extending out of the groove is fixed on the vertical plate of the L-shaped plate (21); the inner cavity of the inner conical sleeve (9) is conical, the upper part of the inner conical sleeve is large, the lower part of the inner conical sleeve is small, a plurality of radial first sliding grooves are uniformly distributed on the periphery of the conical surface of the inner conical sleeve (9), a clamping block (23) which can radially slide in each first sliding groove and can extend out of the corresponding first sliding groove is arranged in each first sliding groove, a fourth pressure spring (24) is arranged between each clamping block (23) and the corresponding first sliding groove, one end of each fourth pressure spring (24) is connected with the clamping block (23), and the other end of each fourth pressure spring is connected with the bottom of the corresponding first sliding groove; the conical plug (11) is conical with a large upper part and a small lower part, a plurality of clamping grooves which correspond to the clamping blocks (23) one to one are uniformly distributed on the outer edge surface of the conical plug (11), one ends of the clamping blocks (23) extending out of the first sliding grooves are arc-shaped and can extend into the clamping grooves, and the bottoms of the clamping grooves are arc-shaped.
6. The sewage filter screen capable of being rapidly replaced according to claim 1, wherein a horizontal second chute is formed at a position near each inflatable sealing ring (3) on the filter screen (1), a wedge-shaped sliding block (25) which can slide left and right in the second chute and is in contact with the inflatable sealing ring (3) in an inclined plane is arranged in the second chute, and the inclined plane of the wedge-shaped sliding block (25) inclines outwards from top to bottom; a horizontal second through hole is formed between the bottom of the second sliding groove and the end face of the corresponding filter screen (1), a scale (26) capable of sliding left and right inside the second through hole is installed in the second through hole, one end of the scale (26) is fixedly connected with the bottom of the wedge-shaped sliding block (25), the other end of the scale can stretch out of the filter screen (1), a fifth pressure spring (27) is sleeved on the scale (26), one end of the fifth pressure spring (27) is connected with the wedge-shaped sliding block (25), and the other end of the fifth pressure spring is connected with the bottom of the second sliding groove.
7. A quick-change sewage filter screen according to claim 1 or 4, characterised in that a first gasket (28) is fixed to the upper end surface of said second sleeve (8); an annular groove is formed in the outer circular surface of the shaft shoulder of the second sleeve (8), and a common sealing ring (29) is arranged in the annular groove; a vertical third through hole is formed in the sliding rod (6), the ejector rod (10) can move up and down in the third through hole, and a second sealing gasket (30) is fixed at the position, through which the ejector rod (10) penetrates, on the lower end face of the sliding rod (6).
8. A sewage filter screen capable of being replaced rapidly according to claim 1, wherein a baffle (31) is fixed in each groove, a fourth through hole is formed in the baffle (31), the slide rod (6) can slide left and right in the fourth through hole on the baffle (31), the cross section of the end part of the slide rod (6) placed in the groove is larger than that of the fourth through hole, namely, the end of the slide rod (6) placed in the groove can not pass through the baffle (31).
9. The sewage filter screen capable of being rapidly replaced according to claim 1, wherein the thickness of the filtering part of the filter screen (1) is thinner than that of the left end and the right end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811640679.5A CN109529434B (en) | 2018-12-29 | 2018-12-29 | But quick replacement's sewage filter screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811640679.5A CN109529434B (en) | 2018-12-29 | 2018-12-29 | But quick replacement's sewage filter screen |
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| CN109529434A CN109529434A (en) | 2019-03-29 |
| CN109529434B true CN109529434B (en) | 2021-09-24 |
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| CN111085016B (en) * | 2019-12-09 | 2021-08-20 | 台州职业技术学院 | High-efficiency extraction and filtration device for processing white bonesetting |
| CN112572076A (en) * | 2020-12-24 | 2021-03-30 | 宁波海诺斯汽车科技有限公司 | Inflating valve and using method thereof |
| CN112917451A (en) * | 2021-01-28 | 2021-06-08 | 谭英 | Point mark device on electric motor rotor production line |
| CN114345026B (en) * | 2021-12-27 | 2023-10-27 | 扬州江净航空设备科技有限公司 | Fresh air filtering device convenient for replacing filter screen |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| IT224628Z2 (en) * | 1991-08-02 | 1996-05-29 | VALVE FOR PRESSURE GAS CYLINDERS, OF THE LOSS TYPE, WITH ANTI-CHARGING DEVICE. | |
| US7766302B2 (en) * | 2006-08-30 | 2010-08-03 | Lgd Technology, Llc | Variable valve actuator with latches at both ends |
| CN101566068B (en) * | 2009-05-27 | 2012-02-01 | 煤炭科学研究总院重庆研究院 | Quick trigger device of explosion suppression device for mineral |
| CN206361156U (en) * | 2016-12-08 | 2017-07-28 | 中国航天空气动力技术研究院 | A kind of vapour-pressure type acceleration switching valve |
| CN207200011U (en) * | 2017-09-27 | 2018-04-06 | 正泰集团成套设备制造有限公司 | A kind of outdoor water-proof switch cubicle |
| CN207373419U (en) * | 2017-10-20 | 2018-05-18 | 河南新天合农牧机械有限公司 | A kind of crevice board stripper apparatus |
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