CN210568343U - Sewage filtering device of continuous sewage discharging expander - Google Patents

Abstract

The utility model relates to the technical field of continuous blowdown expanders, and discloses a blowdown water filtering device of a continuous blowdown expander, which comprises a cylinder body, wherein a blowdown pipe communicated with the inside of the cylinder body is arranged on the cylinder body, at least two filter plates are rotatably arranged in the blowdown pipe from one end close to the cylinder body to one end far away from the cylinder body, a driving rod is fixedly connected onto the filter plates, one end of the driving rod far away from the filter plates is positioned outside the blowdown pipe, and a positioning piece for fixing the driving rod is arranged on the blowdown pipe; the pore diameters of the filter holes of at least two filter plates are gradually reduced from one end close to the cylinder to one end far away from the cylinder. Through setting up two piece at least filters to the filtration pore aperture on every filter is different, selects the filter of different aperture sizes according to the different particle diameters of impurity in the blowdown water, thereby can filter the impurity in different apertures.

Description

Sewage filtering device of continuous sewage discharging expander

Technical Field

The utility model belongs to the technical field of the technique of blowdown expander in succession and specifically relates to a blowdown water filter equipment of blowdown expander in succession.

Background

The blow-off expander is connected with the continuous blow-off port of the boiler, and is used for reducing the pressure and expanding the continuous blow-off of the boiler, the blow-off water is separated into secondary steam and waste hot water in the continuous blow-off expander through adiabatic expansion, pressure reduction and heat exchange in the expander, and then is discharged, the secondary steam is led out by a special pipeline, and the waste hot water is automatically discharged through a floating ball liquid level valve or an overflow regulating valve.

The working principle of the blowdown expander is that the boiler blowdown water continuously and uniformly enters the blowdown expander, the blowdown water makes tangential motion in a cylindrical partition plate in the middle of the shell and is immediately vaporized into secondary steam, the secondary steam is subjected to steam-water separation through a shutter type steam-water separator on the upper portion, and the remained blowdown water is discharged through the water level regulating valve. The blowdown expander is divided into a periodic blowdown expander and a continuous blowdown expander, and the continuous blowdown expander is used for expanding the blowdown water of the boiler to evaporate steam and separating the steam from the blowdown water. The separated steam can be recycled to a thermodynamic system; and discharging the sewage which is not evaporated.

Because the sewage contains a lot of impurities such as salts with low solubility and the like, the impurities are evaporated along with part of water, so that the water in the sewage which is not evaporated is reduced, the solvent is reduced, and the salts with low solubility are separated out from the whole dissolving system and form turbid liquid with the solution, and the turbid liquid is unstable and is easy to settle in the subsequent discharging process, thereby blocking the pipeline. In order to solve the problem, a filter screen is usually disposed at the sewage outlet to filter the sewage, but the salt impurities and other impurities in the sewage are complex, and the molecular particle size of the impurities is different, so that it is necessary to provide a filtering apparatus capable of filtering the impurities with different particle sizes.

SUMMERY OF THE UTILITY MODEL

Not enough to above-mentioned prior art exists, the utility model discloses an aim at is providing a blowdown water filter equipment of blowdown expander in succession, can filter the impurity of different particle diameters in the blowdown simultaneously, prevents follow-up blowdown water from blockking up the pipeline.

The above object of the present invention is achieved by the following technical solutions:

a sewage filtering device of a continuous sewage expander comprises a barrel, wherein a sewage pipe communicated with the inside of the barrel is arranged on the barrel, at least two filter plates are rotatably arranged in the sewage pipe from one end close to the barrel to one end far away from the barrel, a driving rod is fixedly connected to each filter plate, one end, far away from each filter plate, of each driving rod is positioned outside the corresponding sewage pipe, and a positioning piece used for fixing the driving rod is arranged on each sewage pipe; the pore diameters of the filter holes of at least two filter plates are gradually reduced from one end close to the cylinder to one end far away from the cylinder.

Through adopting above-mentioned technical scheme, arrange back to the blow off pipe in from the barrel when the blow off water, according to different impurity in the blow off water, select the filter in different apertures, the staff is in the condition that blocks the blow off pipe through rotating the corresponding actuating lever of the filter of choosing good after the selection completion for the filter, then use the setting element to fix the actuating lever, thereby make the filter also fixed in the blow off pipe. The blowdown water then continues to be discharged so that some of the undissolved material in the blowdown water is filtered on the filter plate. Meanwhile, when the impurity types in the sewage are more and the components are more complex, the corresponding driving rods on the plurality of filter plates can be rotated simultaneously, so that the plurality of filter plates can block the sewage discharge pipe, and the impurities with different particle sizes can be filtered simultaneously; and the aperture of its filtration pore of polylith filter from the one side that is close to the barrel to the opposite side reduces gradually to can prevent that the great impurity of particle diameter from blockking up the filter that the aperture is less, thereby prolonged the life of filter.

The utility model discloses further set up to: the setting element including axial slide set up in connecting pipe on the actuating lever, fixed set up in locating piece on the connecting pipe and set up in just supply on the blow off pipe lateral wall the constant head tank that the locating piece was pegged graft, connecting pipe circumference is fixed on the actuating lever, the locating piece peg graft in when in the constant head tank the filter will the blow off pipe blocks.

Through adopting above-mentioned technical scheme, after the filter is selected to finish, the staff rotates the actuating lever for the filter blocks the blow off pipe, then sliding connection pipe drives the locating piece, makes the locating piece peg graft in the constant head tank, because connecting pipe circumference is fixed on the actuating lever, so when the locating piece inserts in the constant head tank, the actuating lever can't rotate, and the location is stable, convenient operation.

The utility model discloses further set up to: a blocking plate is fixedly arranged at one end of the driving rod, which is far away from the filter plate; the connecting pipe is sleeved on the driving rod and is positioned between the barrier plate and the sewage discharge pipe; the driving rod is sleeved with a return spring; one end of the reset spring is tightly abutted to the blocking plate, and the other end of the reset spring is tightly abutted to the end part of the connecting pipe far away from the sewage discharge pipe.

Through adopting above-mentioned technical scheme, when needs rotate the actuating lever, the staff overcomes reset spring's elasticity, the direction sliding connection pipe towards the barrier plate, then rotate the connecting pipe, it rotates to drive the actuating lever, after the filter stops the blow off pipe formation, staff release connecting pipe, the connecting pipe drives the locating piece under reset spring's drive and inserts in the constant head tank, thereby make the actuating lever fix at the filter, through setting up reset spring, thereby prevent that the locating piece from breaking away from in the constant head tank because unexpected at the in-process of work, moreover, the steam generator is simple in structure, and the locating piece has the reset action.

The utility model discloses further set up to: the outer side wall of the sewage discharge pipe is provided with an annular groove for inserting one end of the connecting pipe, which is far away from the barrier plate, and the positioning groove is communicated with the annular groove; and the drain pipe is provided with a water drainage groove communicated with the annular groove, and the length direction of the water drainage groove is mutually vertical to that of the positioning groove.

Through adopting above-mentioned technical scheme, the in-process of sewage through the filter, other filters that need not use are through rotating for corresponding locating piece is pegged graft and is got into to water drainage tank in, thereby fixes the filter, prevents to take place to rotate carrying out filterable in-process other filters that do not use.

The utility model discloses further set up to: one end of the sewage discharge pipe, which is far away from the cylinder body, is connected with an installation pipe, and an output pipe and a cleaning pipe are arranged on the peripheral side wall of the installation pipe; one end of the output pipe is positioned in the mounting pipe, and the other end of the output pipe is positioned outside the mounting pipe; one end of the cleaning pipe is positioned in the mounting pipe, and the other end of the cleaning pipe is positioned outside the mounting pipe; the installation pipe is internally provided with a blocking component used for blocking the cleaning pipe and the output pipe.

Through adopting above-mentioned technical scheme, when adnexed impurity is too much to need the clearance on the filter, plug up the output tube through stopping the subassembly, then rotate the filter for the filter forms the angle of slope, then washes the filter from the blow off pipe exhaust blow off water, thereby makes impurity on the filter washed, then discharges from the scavenge pipe, thereby can collect these more blow off water that contain impurity.

The utility model discloses further set up to: the end part of the output pipe, which is positioned in the installation pipe, is a closed end, and the end part of the cleaning pipe, which is positioned in the installation pipe, is a closed end;

the blocking assembly comprises a first blocking pipe and a second blocking pipe, the first blocking pipe is slidably sleeved at one end of the output pipe, which is positioned in the installation pipe, and the second blocking pipe is slidably sleeved at one end of the cleaning pipe, which is positioned in the installation pipe;

a first water delivery hole is formed in the side wall of one end, located in the installation pipe, of the output pipe, a first drainage hole is formed in the side wall of the first blocking pipe, and the axis of the first water delivery hole is parallel to the axis of the first drainage hole;

a second water delivery hole is formed in the side wall of one end, located in the mounting pipe, of the cleaning pipe, a second water drainage hole is formed in the side wall of the second blocking pipe, and the axis of the second water delivery hole is parallel to the axis of the second water drainage hole;

the mounting pipe is provided with a driving piece for driving the first blocking pipe to slide along the length direction of the output pipe, and the driving piece drives the second blocking pipe to slide along the length direction of the cleaning pipe;

when the first water delivery hole is overlapped with the first drainage hole, the output pipe is communicated with the mounting pipe; the cleaning pipe is communicated with the mounting pipe when the second water delivery hole is overlapped with the second water drainage hole;

when the water pipe is communicated with the mounting pipe, the second blocking pipe blocks the second water delivery hole; when the cleaning pipe is communicated with the installation pipe, the first blocking pipe blocks the first water delivery hole.

Through adopting above-mentioned technical scheme, in the time of work, when needs make the sewage flow out from the output tube, promote first inner wall that blocks the pipe orientation installation pipe through the driving piece and slide for first water delivery hole overlaps mutually with first drainage hole, thereby makes output tube and installation pipe intercommunication, finally makes the sewage can enter into to the output tube in. The driving piece drives the first gliding in-process of pipe that blocks, and the driving piece still drives the second and blocks the pipe and slide towards the direction of installing the pipe dorsad to make the second block the pipe and plug up the second water delivery hole, prevent that the blow off water from flowing away from the scavenge pipe, thereby can play confined effect to the scavenge pipe. When needs clear up the filter, through the driving piece for first stop pipe plugs up first water transmission hole, makes second water transmission hole and second wash port overlap simultaneously, thereby makes scavenge pipe and installation pipe intercommunication, can discharge the water after wasing the filter from the scavenge pipe. Through setting up and stopping the subassembly to can discharge the water after the clearance filter from the scavenge pipe.

The utility model discloses further set up to: the driving piece comprises a rotating shaft and a cam, wherein the rotating shaft is rotatably arranged on the mounting pipe, and the cam is fixedly arranged on the rotating shaft; a ring groove is formed in the peripheral side wall of the cam;

one end of the rotating shaft is positioned in the mounting pipe, and the other end of the rotating shaft is positioned outside the mounting pipe; the cam is positioned in the installation pipe, one end of the first blocking pipe, which is far away from the output pipe, is fixedly connected with a first pushing block, and one end of the first pushing block, which is far away from the output pipe, is clamped in the annular groove in a sliding manner; the second blocks that the pipe is kept away from the fixed second that is provided with of one end of scavenge pipe promotes the piece, the second promotes the piece and keeps away from the joint that slides of one end of scavenge pipe in the annular.

Through adopting above-mentioned technical scheme, when the sewage after will clearing up is discharged from the scavenge pipe as required, the staff is through rotating the axis of rotation, drive the cam and rotate, thereby make the convex part of cam promote the piece towards the second, the convex position of cam promotes the second towards the direction of scavenge pipe and promotes the piece, make the second block the pipe and slide towards the direction that is close to the cam, make second water delivery hole and second wash port overlap each other, thereby make scavenge pipe and installation pipe intercommunication, meanwhile, the cam can also drive the second and promote the direction that the piece orientation was close to the cam and remove, thereby it slides towards the direction of cam to drive first blocking pipe, make first blocking pipe plug up first water delivery hole, thereby prevent that the sewage from flowing into in the output tube. The drive is stable to can drive simultaneously that first blocks the pipe and the second blocks that the pipe slides.

The utility model discloses further set up to: the cross section of the annular groove is T-shaped, one end, far away from the second blocking pipe, of the first pushing block is fixedly connected with a first cylinder, and the first cylinder is connected in the annular groove in a rotating and sliding manner; the second promotes the piece and keeps away from the one end fixedly connected with second cylinder that the second stopped the pipe, the second cylinder rotate and slide set up in the annular.

Through adopting above-mentioned technical scheme, first cylinder slides for the cam with the second cylinder homogeneous phase when cam pivoted in-process, first promotion piece links to each other through first cylinder with the cam, at cam pivoted in-process, the camber of cam week lateral wall changes, first cylinder itself can take place to rotate for the annular when this, thereby make the cam at the pivoted in-process, can be more smooth, set up the annular into T shape simultaneously, thereby can make the cam drive first promotion piece and second all the time and promote the piece and slide.

To sum up, the utility model discloses a beneficial technological effect does:

1. by arranging at least two filter plates, wherein the filter holes on each filter plate are different in aperture, after the filter plates with different apertures are selected, the filter plates are driven to rotate by rotating the driving rod, so that a blow-off pipe is blocked, and insoluble substances in the blow-off water are filtered; the filter plates with different pore sizes are selected according to different particle sizes of impurities in the sewage, so that the impurities with different pore sizes can be filtered;

2. when the driving rod needs to be rotated, a worker overcomes the elasticity of the reset spring, slides the connecting pipe towards the direction of the blocking plate, then rotates the connecting pipe to drive the driving rod to rotate, and after the filtering plate blocks the sewage discharge pipe, the worker releases the connecting pipe, the connecting pipe drives the positioning block to be inserted into the positioning groove under the driving of the reset spring, so that the driving rod is fixed on the filtering plate, and the reset spring is arranged, so that the positioning block is prevented from being separated from the positioning groove due to accidents in the working process;

3. when the impurities attached to the filter plate are excessive and need to be cleaned, the output pipe is blocked by the blocking assembly, then the filter plate is rotated to enable the filter plate to form an inclined angle, then the filter plate is washed by the sewage discharged from the sewage discharge pipe, so that the impurities on the filter plate are washed and then discharged from the cleaning pipe, and therefore the sewage containing more impurities can be collected;

4. through setting up one set of driving piece to can make things convenient for the staff can control the state whether the intercommunication of raceway and scavenge pipe and installation pipe simultaneously.

Drawings

FIG. 1 is a schematic structural view of a sewage filtering device of a continuous sewage expander of the present invention;

FIG. 2 is a schematic sectional view showing the structure of the interior of the sewage drain pipe;

FIG. 3 is an enlarged view of the portion W in FIG. 1 for illustrating the structure of the positioning member;

fig. 4 is a cross-sectional structural view of the installation tube for illustrating the structure of the blocking assembly.

Reference numerals: 1. a barrel; 2. a blow-off pipe; 3. a filter plate; 4. a drive rod; 5. a positioning member; 51. a connecting pipe; 52. positioning blocks; 53. positioning a groove; 6. a limiting convex rib; 7. a blocking plate; 8. a blocking component; 81. a first barrier tube; 82. a second barrier tube; 9. a drive member; 91. a rotating shaft; 92. a cam; 10. inserting grooves; 11. a return spring; 12. a water discharge tank; 13. installing a pipe; 14. an output pipe; 15. cleaning the tube; 16. a first water delivery hole; 17. a second water delivery hole; 18. a first drain hole; 19. a second drain hole; 20. a handle; 21. a first pushing block; 22. a first cylinder; 23. a second pushing block; 24. a second cylinder.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1, the utility model discloses a blowdown water filter equipment of continuous blowdown expander, including barrel 1, fixedly connected with blow off pipe 2 on barrel 1's the diapire, blow off pipe 2 and the inside intercommunication of barrel 1.

Referring to fig. 2, three filter plates 3 are arranged in the sewage discharge pipe 2, and the three filter plates 3 are different in pore size. The aperture of the three filter plates 3 is gradually reduced from the end close to the cylinder 1 to the end far away from the cylinder 1. The filter 3 rotates through the round pin axle and connects on the inner wall of blow off pipe 2, fixedly connected with actuating lever 4 on the lateral wall of filter 3, the axis of actuating lever 4 and the axis coincidence of the round pin axle on the filter 3. The one end that filter 3 was kept away from to actuating lever 4 wears out blow off pipe 2 to actuating lever 4 rotates with the lateral wall of blow off pipe 2 and links to each other.

Referring to fig. 2 and 3, a positioning member 5 is disposed at an end of the driving lever 4 away from the filter plate 3, and the positioning member 5 includes a connecting pipe 51, a positioning block 52, and a positioning groove 53. The connection pipe 51 has a hollow pipe shape, the connection pipe 51 is sleeved on a portion of the driving rod 4 outside the soil pipe 2, and the driving rod 4 passes through the connection pipe 51. The inner wall of the connecting pipe 51 is provided with a limiting groove along the axial direction, the driving rod 4 is integrally provided with a limiting convex edge 6 along the axial direction, and the limiting convex edge 6 and the limiting groove are mutually spliced and matched, so that the driving rod 4 can be driven to rotate together when the connecting pipe 51 is rotated. The end part of the driving rod 4 far away from the filter plate 3 is welded with a barrier plate 7, and the connecting pipe 51 is positioned between the barrier plate 7 and the sewage draining pipe 2. The part of the sewage discharging pipe 2 close to the connecting pipe 51 is provided with an inserting groove 10, and one end of the connecting pipe 51 far away from the barrier plate 7 is inserted into the inserting groove 10.

A return spring 11 is sleeved on the driving rod 4; one end of the return spring 11 is tightly abutted with the side wall of the blocking plate 7 close to the sewage discharge pipe 2, and the other end is tightly abutted with the end part of the connecting pipe 51 far away from the inserting groove 10. The positioning groove 53 is arranged on the outer side wall of the sewage draining pipe 2 and communicated with the insertion groove 10. The positioning slot 53 is in a vertical orientation. The drain pipe 2 is provided with a drain tank 12, and the drain tank 12 is communicated with the insertion groove 10. The length direction of the drainage channel 12 and the length direction of the positioning groove 53 form a right angle. The positioning block 52 is welded on the outer side wall of the connecting pipe 51, and when the filter plate 3 is in a horizontal state, the positioning block 52 is inserted into the positioning groove 53. When the filter 3 is in the horizontality, the filter 3 blocks the blow off pipe 2.

Referring to fig. 1 and 4, one end of the sewage discharging pipe 2 far away from the cylinder body 1 is connected with a mounting pipe 13 through a flange, and one end of the mounting pipe 13 far away from the sewage discharging pipe 2 is a closed end. The installation pipe 13 is connected with the output pipe 14 and the purge tube 15 on the circumference lateral wall of the one end of keeping away from the blow off pipe 2, and the output pipe 14 and the purge tube 15 all pass the lateral wall of installation pipe 13 to all link to each other with installation pipe 13 is fixed. The end parts of the output pipe 14 and the cleaning pipe 15 which are positioned in the installation pipe 13 are both closed ends. The peripheral side wall of the output pipe 14 at one side in the installation pipe 13 is provided with a first water delivery hole 16, and the peripheral side wall of the cleaning pipe 15 at one side in the installation pipe 13 is provided with a second water delivery hole 17. A blocking assembly 8 is arranged in the mounting tube 13, the blocking assembly 8 comprising a first blocking tube 81 and a second blocking tube 82. One end of the first blocking tube 81 is an open end and the other end is a closed end; the second blocking tube 82 has one end thereof being an open end and the other end thereof being a closed end.

Referring to fig. 4, the open end of the first blocking pipe 81 is sleeved on the closed end of the output pipe 14, and the peripheral side wall of the first blocking pipe 81 is provided with a first drainage hole 18, the axis of the first drainage hole 18 is parallel to the axis of the first water delivery hole 16, and the first drainage hole 18 and the first water delivery hole 16 are on the same side. By sliding the first blocking pipe 81, the first water supply hole 16 and the first drain hole 18 are overlapped with each other, so that the output pipe 14 is communicated with the mounting pipe 13. The open end of the second blocking pipe 82 is sleeved on the closed end of the cleaning pipe 15, the peripheral side wall of the second blocking pipe 82 is provided with a second water drainage hole 19, the axis of the second water drainage hole 19 is parallel to the axis of the second water delivery hole 17, and the second water drainage hole 19 and the second water delivery hole 17 are positioned on the same side. The second water delivery hole 17 and the second water discharge hole 19 are overlapped with each other by sliding the second blocking pipe 82, so that the washing pipe 15 is communicated with the installation pipe 13.

Referring to fig. 4, a driving member 9 is provided in the mounting tube 13, and the driving member 9 includes a rotating shaft 91 and a cam 92. The rotating shaft 91 penetrates through the closed end of the mounting tube 13 and is rotatably connected with the mounting tube 13; the end of the rotating shaft 91 outside the mounting tube 13 is fixedly connected to the handle 20. The end of the rotating shaft 91 located inside the mounting tube 13 is fixedly connected to the cam 92. A ring groove is formed in the peripheral side wall of the cam 92, and the cross section of the ring groove is T-shaped. The closed end of the first blocking pipe 81 is fixedly connected with a first pushing block 21, the end part of the first pushing block 21 far away from the blocking pipe is fixedly connected with a first cylinder 22, one end of the first pushing block 21 far away from the first blocking pipe 81 is inserted into the annular groove, and the first cylinder 22 is matched in the sliding groove in a sliding mode. The closed end of the second blocking pipe 82 is fixedly connected with a second pushing block 23, the end part of the second pushing block 23 far away from the blocking pipe is fixedly connected with a second cylinder 24, one end of the second pushing block 23 far away from the second blocking pipe 82 is inserted into the annular groove, and the second cylinder 24 is matched in the sliding groove in a sliding mode.

The handle 20 is rotated to drive the rotating shaft 91 to rotate, the cam 92 is driven to rotate, when the convex part of the cam 92 faces the first blocking pipe 81, the cam 92 pushes the first pushing block 21 towards the direction close to the output pipe 14 to drive the first blocking pipe 81 to slide towards the output pipe 14, so that the first water delivery hole 16 is overlapped or overlapped with the first water drainage hole 18, and the output pipe 14 is communicated with the mounting pipe 13. Meanwhile, the cam 92 pulls the second cylinder 24 towards the direction far away from the cleaning pipe 15, drives the second pushing block 23 to move towards the direction far away from the cleaning pipe 15, and drives the second blocking pipe 82 to slide towards the direction back to the cleaning pipe 15, so that the side wall of the second blocking pipe 82 blocks the second water delivery hole 17, and sewage in the installation pipe 13 cannot enter the cleaning pipe 15.

When the convex portion of the cam 92 faces the second blocking pipe 82, the cam 92 pushes the second pushing block 23 toward the direction close to the cleaning pipe 15, and drives the second blocking pipe 82 to slide toward the cleaning pipe 15, so that the second water delivery hole 17 overlaps or coincides with the second water discharge hole 19, and the cleaning pipe 15 is communicated with the installation pipe 13. Meanwhile, the cam 92 pulls the first cylinder 22 towards the direction far away from the output pipe 14, so as to drive the first pushing block 21 to move towards the direction far away from the output pipe 14, and drive the first blocking pipe 81 to slide towards the direction back to the output pipe 14, so that the side wall of the first blocking pipe 81 blocks the first water delivery hole 16, and sewage in the installation pipe 13 cannot enter the output pipe 14.

The implementation principle is as follows:

according to the different impurities in the sewage discharged from the cylinder 1 to the sewage discharge pipe 2, the filter plates 3 with different apertures are selected. After the selection of filter 3 finishes, the staff overcomes reset spring 11's elasticity and stimulates connecting pipe 51 towards the direction of barrier plate 7, make connecting pipe 51 and inserting groove 10 throw off, drive locating piece 52 and water drainage tank 12 throw off simultaneously, then rotate connecting pipe 51, drive actuating lever 4, drive filter 3 at the rotation of blow off pipe 2, when making filter 3 be in the horizontality, locating piece 52 and constant head tank 53 aim at each other, then staff release connecting pipe 51, connecting pipe 51 is under reset spring 11's the driving towards inserting groove 10 in, drive locating piece 52 simultaneously and insert in the constant head tank 53, thereby fix filter 3 in blow off pipe 2. Meanwhile, the handle 20 is rotated to drive the cam 92 to rotate, so that the output pipe 14 is communicated with the mounting pipe 13, at the moment, sewage in the cylinder 1 is filtered by the filter plate 3 and then flows into the mounting pipe 13, and finally flows into the output pipe 14 from the first drainage hole 18 and the first water delivery hole 16, so that the sewage is discharged out of the cylinder 1.

When piling up on the filter 3 and having impurity need wash, the staff rotates axis of rotation 91 once more, drives cam 92 and rotates for scavenge pipe 15 and installation pipe 13 intercommunication. Then the staff overcomes reset spring 11's elasticity and draws connecting pipe 51 towards the direction of barrier plate 7, make locating piece 52 and constant head tank 53 throw off, then rotate connecting pipe 51, make locating piece 52 and water drainage tank 12 aim at, then release connecting pipe 51, make locating piece 52 insert in water drainage tank 12, filter 3 is in the horizontality this moment, the sewage washes filter 3, thereby can arrange the impurity intercommunication sewage on the filter 3 to the scavenge pipe 15 in, finally discharge the sewage after the washing outside barrel 1 from the scavenge pipe 15.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. The utility model provides a blowdown water filter equipment of expander in succession, includes barrel (1), be provided with on barrel (1) with blow off pipe (2) of the inside intercommunication of barrel (1), its characterized in that: at least two filter plates (3) are rotatably arranged in the sewage discharge pipe (2) from one end close to the barrel body (1) to one end far away from the barrel body (1), a driving rod (4) is fixedly connected onto each filter plate (3), one end, far away from the filter plates (3), of each driving rod (4) is located outside the sewage discharge pipe (2), and a positioning piece (5) used for fixing the driving rod (4) is arranged on each sewage discharge pipe (2); the pore diameters of the filter pores of at least two filter plates (3) are gradually reduced from one end close to the cylinder body (1) to one end far away from the cylinder body (1).

2. The blowdown water filter device of the continuous blowdown expander of claim 1, wherein: the setting element (5) including the axial slide set up in connecting pipe (51) on actuating lever (4), fixed set up in locating piece (52) on connecting pipe (51) and set up in just supply on blow off pipe (2) lateral wall locating slot (53) that locating piece (52) were pegged graft, connecting pipe (51) circumference is fixed on actuating lever (4), locating piece (52) peg graft in when in locating slot (53) filter (3) will blow off pipe (2) block.

3. The blowdown water filter device of the continuous blowdown expander as claimed in claim 2, wherein: a blocking plate (7) is fixedly arranged at one end of the driving rod (4) far away from the filter plate (3); the connecting pipe (51) is sleeved on the driving rod (4) and is positioned between the barrier plate (7) and the sewage discharge pipe (2); a return spring (11) is sleeved on the driving rod (4); one end of the return spring (11) is tightly abutted to the blocking plate (7), and the other end of the return spring is tightly abutted to the end part, far away from the sewage discharge pipe (2), of the connecting pipe (51).

4. The blowdown water filter device of the continuous blowdown expander of claim 3, wherein: an annular groove for inserting one end of the connecting pipe (51) far away from the blocking plate (7) is formed in the outer side wall of the sewage draining pipe (2), and the positioning groove (53) is communicated with the annular groove; and a drainage groove (12) communicated with the annular groove is formed in the sewage discharge pipe (2), and the length direction of the drainage groove (12) is mutually vertical to that of the positioning groove (53).

5. The blowdown water filter device of the continuous blowdown expander of claim 1, wherein: one end of the sewage discharge pipe (2) far away from the barrel body (1) is connected with a mounting pipe (13), and an output pipe (14) and a cleaning pipe (15) are arranged on the peripheral side wall of the mounting pipe (13); one end of the output pipe (14) is positioned in the mounting pipe (13), and the other end of the output pipe is positioned outside the mounting pipe (13); one end of the cleaning pipe (15) is positioned in the mounting pipe (13), and the other end of the cleaning pipe is positioned outside the mounting pipe (13); and a blocking component (8) used for blocking the cleaning pipe (15) and the output pipe (14) is arranged in the mounting pipe (13).

6. The blowdown water filter device of the continuous blowdown expander of claim 5, wherein: the end part of the output pipe (14) positioned in the mounting pipe (13) is a closed end, and the end part of the cleaning pipe (15) positioned in the mounting pipe (13) is a closed end;

the blocking assembly (8) comprises a first blocking pipe (81) which is slidably sleeved at one end of the output pipe (14) positioned in the installation pipe (13), and a second blocking pipe (82) which is slidably sleeved at one end of the cleaning pipe (15) positioned in the installation pipe (13);

a first water delivery hole (16) is formed in the side wall of one end, located in the mounting pipe (13), of the output pipe (14), a first drainage hole (18) is formed in the side wall of the first blocking pipe (81), and the axis of the first water delivery hole (16) is parallel to the axis of the first drainage hole (18);

a second water conveying hole (17) is formed in the side wall of one end, located in the mounting pipe (13), of the cleaning pipe (15), a second water drainage hole (19) is formed in the side wall of the second blocking pipe (82), and the axis of the second water conveying hole (17) is parallel to the axis of the second water drainage hole (19);

a driving piece (9) for driving the first blocking pipe (81) to slide along the length direction of the output pipe (14) is arranged on the mounting pipe (13), and the driving piece (9) drives the second blocking pipe (82) to slide along the length direction of the cleaning pipe (15);

the output pipe (14) is communicated with the mounting pipe (13) when the first water delivery hole (16) is overlapped with the first drain hole (18); the cleaning pipe (15) is communicated with the installation pipe (13) when the second water delivery hole (17) is overlapped with the second water discharge hole (19);

when the water pipe is communicated with the mounting pipe (13), the second blocking pipe (82) blocks the second water conveying hole (17); when the cleaning pipe (15) is communicated with the mounting pipe (13), the first blocking pipe (81) blocks the first water delivery hole (16).

7. The blowdown water filter device of the continuous blowdown expander of claim 6, wherein: the driving piece (9) comprises a rotating shaft (91) rotatably arranged on the mounting pipe (13) and a cam (92) fixedly arranged on the rotating shaft (91); a ring groove is formed in the peripheral side wall of the cam (92);

one end of the rotating shaft (91) is positioned in the mounting pipe (13), and the other end of the rotating shaft is positioned outside the mounting pipe (13); the cam (92) is positioned in the mounting pipe (13), one end, far away from the output pipe (14), of the first blocking pipe (81) is fixedly connected with a first pushing block (21), and one end, far away from the output pipe (14), of the first pushing block (21) is clamped in the annular groove in a sliding mode; keep away from second stop pipe (82) the fixed second that is provided with of one end of scavenge pipe (15) promotes piece (23), the second promotes piece (23) and keeps away from the joint that slides of one end of scavenge pipe (15) in the annular.

8. The blowdown water filter device of the continuous blowdown expander of claim 7, wherein: the cross section of the annular groove is T-shaped, one end, far away from the second blocking pipe (82), of the first pushing block (21) is fixedly connected with a first cylinder (22), and the first cylinder (22) rotates and is connected into the annular groove in a sliding mode; the second promotes piece (23) and keeps away from the one end fixedly connected with second cylinder (24) of second stopper pipe (82), second cylinder (24) rotate and slide set up in the annular.

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