CN114164753B

CN114164753B - Municipal bridge drainage device easy to clean

Info

Publication number: CN114164753B
Application number: CN202111494284.0A
Authority: CN
Inventors: 黄沛; 周铭倩
Original assignee: Wuxi No5 Municipal Construction Engineering Co ltd
Current assignee: Wuxi No5 Municipal Construction Engineering Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2024-04-02
Anticipated expiration: 2041-12-08
Also published as: CN114164753A

Abstract

The invention relates to the field of municipal drainage engineering, in particular to an easy-to-clean municipal bridge drainage device which comprises a grate component, a containing box and an embedded pipe, wherein the grate component comprises an outer ring, an inner ring and an elastic piece, the inner ring comprises a plurality of holding blocks, and a collecting box is arranged in the containing box. The grid assembly is detachably connected with a positioning block, the positioning block is rotationally connected with a driving screw, and the driving screw is connected with a driving block in a threaded manner. The top of collecting box is connected with the protection casing, the protection casing includes a plurality of expansion plates, the expansion plate includes fixed plate, rotation board. The lifting sleeve is connected to the positioning block in a sliding manner along the vertical direction, and the top end of the fixing plate is fixed to the lifting sleeve. This application has the effect of being convenient for the workman will collect the box and take out from holding the chamber, has reduced simultaneously and has collected the box and spill the possibility that the in-process impurity was taken out.

Description

Municipal bridge drainage device easy to clean

Technical Field

The invention relates to the field of municipal drainage engineering, in particular to an easy-to-clean municipal bridge drainage device.

Background

Rainwater on the bridge is drained through a special built drainage pipeline, so that normal running of people or vehicles is prevented from being influenced by rainwater extrusion on the bridge.

At present, chinese patent with publication number CN109653087B discloses a municipal bridge water draining device easy to clean, which comprises an embedded pipe, a grate component and a collecting component, wherein the upper end opening of the embedded pipe is connected with a containing cavity, the grate component comprises an inner ring, an outer ring and a connecting rod, and the axial cutting of the inner ring is equally divided into 3 or 4 sector blocks. The adjacent connecting rods form water inlet holes of the grate component, and the outer wall of the inner ring is sleeved with rubber rings for tightly holding the fan-shaped blocks. The collection assembly comprises a collection box with a conical structure, lifting rods and inclined rods, wherein the collection box is provided with filtering holes, and the inclined rods are equal to the sector blocks in number and are uniformly arranged along the edges of the lifting rods.

When the impurity in the box is collected in the needs clearance, only need upwards carry the pull rod through the handle, a plurality of diagonal rods evenly outwards prop up a plurality of sector blocks, and the rubber band is propped up gradually. Finally, the collecting box is moved out of the accommodating cavity, so that impurities in the collecting box are cleaned

With respect to the related art in the above, the inventors consider that: when the worker cleans the impurities in the collecting box, the lifting rod is pulled upwards, and a certain amount of manpower is required to be applied to open the plurality of sector blocks as the elastic force of the rubber ring is overcome. If the worker is forced too hard, after the collecting box is separated from the sector block, the worker stops pulling the lifting rod, so that impurities in the collecting box continue to move upwards due to inertia, and the impurities are easy to spill out of the collecting box. Therefore, if the amount of the impurity to be sprayed out is reduced, a worker needs to slowly pull the lifting rod upwards while overcoming the elastic force applied by the rubber band, so that the worker is inconvenient to operate.

Disclosure of Invention

In order to be convenient for the workman take out the collection box from holding the chamber, reduce simultaneously and collect the possibility that the box spilled at taking out in-process impurity, this application provides a municipal bridge drainage device of easy clearance.

The utility model provides an easy municipal bridge sluicing device of clearance adopts following technical scheme:

the utility model provides an easy-to-clean municipal bridge water draining device, includes comb subassembly, holds box, built-in pipe, the inner chamber that holds the box is the funnel-shaped holds the chamber, comb subassembly connect in hold the top of box, built-in pipe intercommunication in hold the bottom of box, comb subassembly includes outer loop, inner ring, elastic component, the inner ring includes a plurality of enclasping pieces, enclasping piece is followed the radial slip setting of outer loop, the elastic component is used for driving a plurality of enclasping pieces draw close each other, be provided with the collection box in the holding box, the collection box is porous structure, can dismantle on the comb subassembly and be connected with the locating piece, rotate on the locating piece and be connected with drive screw, drive screw is vertical setting, the utility model discloses a collecting box, including inner ring, collecting box, driving screw, locating piece, driving screw passes insert behind the inner ring establish to in holding the chamber, threaded connection has the drive block on the driving screw, the top of collecting box is connected with the protection casing, the protection casing is the round platform shape setting up of pointed end up, the protection casing includes a plurality of expansion plates, a plurality of the expansion plates are followed collect the circumference distribution of box, the expansion plates include fixed plate, rotating plate, the fixed plate be fixed in collecting box, the rotating plate rotate connect in the fixed plate, the rotating plate with the drive block is connected, slide along vertical and be connected with the lift cover on the locating piece, the top of fixed plate is fixed in the lift cover, the top of rotating plate conflict in the lift cover.

Through adopting above-mentioned technical scheme, rainwater flows into from comb subassembly top and holds the intracavity, and when collecting the box and placing in accomodating the intracavity, fixed plate and rotation plate overlap and set up for hold the intracavity rainwater and can follow between the adjacent fixed plate and flow into in the collection box. After the rainwater is filtered by the collecting box, the rainwater flows into the embedded pipe.

When the impurity in the collection box needs to be cleared up, the staff rotates drive screw, and drive screw drives the drive piece and rotates, and the drive piece drives a plurality of rotation boards and rotates, when the rotation board contradicts in adjacent fixed plate, the circumference of protection casing is in the closed state this moment, and the protection casing plays the effect of sheltering from to the upside of collecting the box to reduced the impurity in the collection box and spilled the possibility in the collection box.

The rotating plate can not continue to rotate after abutting against the adjacent fixed plate, so that the rotation of the driving block is limited, the driving block ascends along the axial direction of the driving screw, the driving block drives the rotating plate to ascend, the rotating plate drives the lifting sleeve to ascend, the lifting sleeve drives the fixed plate to ascend, and the fixed plate drives the collecting box to ascend. When the outer wall of the protective cover is abutted against the enclasping blocks, the protective cover drives the enclasping blocks to overcome the elastic force of the elastic piece to be far away from each other, so that the protective cover and the collecting box are gradually separated from the grate component upwards.

Because the driving screw has self-locking property, the protective cover and the collecting box are not easy to slide down due to the action of gravity, and the ascending stability of the collecting box is improved. After a plurality of enclasping blocks are gradually opened, the positioning blocks are disassembled, the positioning blocks are pulled upwards, so that the driving screw, the protective cover and the collecting box are driven to move upwards, the collecting box is separated from the accommodating cavity and the grate component, and impurities in the collecting box are cleaned.

Above-mentioned technical scheme is through locating piece, drive screw, drive piece, protection casing, lift cover mutually support, and the workman of being convenient for takes out the collection box from holding the chamber, has reduced the possibility that the collection box spills at the in-process impurity of taking out simultaneously.

Optionally, the driving screw rod is arranged in the lifting sleeve in a penetrating way.

Through adopting above-mentioned technical scheme, the lift cover provides the effect of support and direction for the lift of protection casing on the one hand, and on the other hand the lift cover protects drive screw, has reduced the impaired possibility of drive screw.

Optionally, the cross section of the lifting sleeve is polygonal.

Through adopting above-mentioned technical scheme, avoided the possibility that the cover takes place the rotation to the stability when having improved the cover and having driven the protection casing lift.

Optionally, a side wall of the fixing plate is provided with an accommodating groove, and the rotating plate can rotate into the accommodating groove.

Through adopting above-mentioned technical scheme, rotate the rotor plate to the holding tank in for have the space between the adjacent fixed plate, thereby the rainwater of being convenient for gets into the protection casing and gets into in the collecting box, rotate the rotor plate outside the holding tank, make the rotor plate conflict in adjacent fixed plate, be convenient for seal the circumference of protection casing. The holding groove plays a role in guiding the rotation of the rotating plate, so that the stability of the rotating plate during rotation is improved.

Optionally, a driving rod is connected between the rotating plate and the driving block, a guiding groove is formed in one side, facing the driving block, of the fixing plate, the guiding groove is communicated with the accommodating groove, and when the driving rod rotates around the driving screw, the driving rod slides in the guiding groove.

Through adopting above-mentioned technical scheme, the drive piece passes through the actuating lever and drives the pivoted board and rotate, and the guide way plays the effect of direction to the guide bar, has improved the stability when the guide bar rotates, and then has improved the stability when the pivoted board rotates.

Optionally, a telescopic rod is connected between the enclasping block and the outer ring, and a plurality of telescopic rods point to the center of the outer ring.

Through adopting above-mentioned technical scheme, the telescopic link plays the effect of direction to the removal of enclasping the piece to stability when having improved enclasping the piece and moving.

Optionally, the enclasping piece is provided with the conflict inclined plane towards the junction of drive screw's lateral wall and diapire, the conflict inclined plane be used for with the outer wall conflict of protection casing.

Through adopting above-mentioned technical scheme, the in-process that the protection casing goes up and down is contradicted behind the conflict inclined plane to drive a plurality of blocks of holding tightly and keep away from each other and remove, contradicted the inclined plane and increased the area of contact of holding tightly the block with the protection casing, improved the protection casing drive and held the stability of holding tightly when the block removes.

Optionally, the up end of outer loop is provided with the solid fixed ring, the diapire of solid fixed ring is fixed with the fixed block, the up end of outer loop is opened and is supplied the slot that the fixed block was inserted, gu fixed ring with fixedly connected with dead lever between the locating piece.

Through adopting above-mentioned technical scheme, through the grafting cooperation of fixed block and slot, can dismantle the fixed ring and connect on the outer loop, fixed ring and dead lever support the location to the holding ring.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the mutual matching of the positioning block, the driving screw, the driving block, the protective cover and the lifting sleeve, a worker conveniently takes the collecting box out of the accommodating cavity, and meanwhile, the possibility of spilling impurities in the taking-out process of the collecting box is reduced;

2. the driving screw rod is arranged in the lifting sleeve in a penetrating way, on one hand, the lifting sleeve provides supporting and guiding functions for lifting of the protective cover, and on the other hand, the lifting sleeve protects the driving screw rod, so that the possibility of damage to the driving screw rod is reduced;

3. a containing groove is formed in one side wall of the fixing plate, the rotating plate can rotate into the containing groove, the containing groove provides guidance for rotation of the rotating plate, and stability of the rotating plate during rotation is improved.

Drawings

Fig. 1 is a schematic structural diagram of an easy-to-clean municipal bridge drainage device according to an embodiment of the application.

Fig. 2 is a top view of an easy-to-clean municipal bridge drainage device according to an embodiment of the application.

Fig. 3 is a cross-sectional view taken along A-A in fig. 2.

Fig. 4 is a schematic structural view of a grate assembly according to an embodiment of the present application.

Fig. 5 is a schematic structural view of an inner ring according to an embodiment of the present application.

Fig. 6 is a schematic structural view of a fixing ring, a positioning block and a protective cover according to an embodiment of the present application.

Fig. 7 is a schematic structural view of a telescoping plate according to an embodiment of the present application.

Fig. 8 is a schematic structural view of a hug block according to an embodiment of the present application.

Reference numerals illustrate:

1. a grate assembly; 11. an outer ring; 111. a slot; 12. an inner ring; 121. a holding block; 122. a clamping groove; 123. an abutting inclined plane; 13. an elastic member; 131. an elastic sleeve; 14. a telescopic rod; 141. a fixed sleeve; 142. a slide bar; 2. a housing case; 21. a receiving chamber; 3. pre-burying a pipe; 4. a fixing ring; 41. a fixed block; 42. a fixed rod; 5. a positioning block; 51. a guide ring groove; 52. a lifting sleeve; 6. driving a screw; 61. a driving block; 62. a knob; 63. a driving rod; 7. a collection box; 8. a protective cover; 81. a telescoping plate; 811. a fixing plate; 812. a rotating plate; 813. a receiving groove; 814. a guide groove.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-8.

The embodiment of the application discloses municipal bridge drainage device of easy clearance.

Referring to fig. 1, 2 and 3, the municipal bridge drainage device of easy clearance includes comb subassembly 1, holds box 2, pre-buried pipe 3, and comb subassembly 1, hold box 2, pre-buried pipe 3 all pre-buried in the bridge, and comb subassembly 1 is located the top that holds box 2, and pre-buried pipe 3 is vertical setting and is located the below that holds box 2, and the upside that holds box 2 is the opening form, holds box 2 and has the holding chamber 21 that is the funnel form, and the toper that the tip is down promptly. The top end of the embedded pipe 3 is communicated with the accommodating cavity 21.

Referring to fig. 1, 4 and 5, the grate assembly 1 comprises an outer ring 11, an inner ring 12 and an elastic piece 13, wherein the axes of the outer ring 11 and the inner ring 12 are all arranged vertically, the outer ring 11 and the inner ring 12 are both arranged coaxially with the accommodating box 2, and the outer ring 11 is fixedly connected to the top end of the accommodating box 2. The inner ring 12 comprises a plurality of enclasping blocks 121, and the enclasping blocks 121 are annular when being mutually closed and adhered.

Referring to fig. 4, a telescopic rod 14 is connected between the clasping block 121 and the inner wall of the outer ring 11, and the axial direction of the telescopic rod 14 is directed toward the center of the outer ring 11. The telescopic rod 14 comprises a fixed sleeve 141 and a sliding rod 142, one end of the fixed sleeve 141 is fixedly connected to the inner wall of the outer ring 11, the sliding rod 142 is slidably arranged in the fixed sleeve 141 in a penetrating manner, and one end of the sliding rod 142 penetrating out of the fixed sleeve 141 is fixedly connected to the enclasping block 121.

The sliding fit of the sliding rod 142 and the fixed sleeve 141 improves the stability of the clasping block 121 when moving in the radial direction of the outer ring 11.

Referring to fig. 4 and 5, the elastic member 13 is an elastic sleeve 131, the elastic sleeve 131 is sleeved on the outer sides of the plurality of enclasping blocks 121, and a clamping groove 122 for clamping the elastic sleeve 131 is formed in the outer side wall of the enclasping block 121, and the clamping groove 122 limits the elastic sleeve 131, so that the possibility that the elastic sleeve 131 is separated from the enclasping block 121 is reduced.

The elastic sleeve 131 applies elastic force to the plurality of enclasping blocks 121, so that the plurality of enclasping blocks 121 are enclasped, and the enclasping blocks 121 are mutually close and attached in a natural state. The number of the telescopic rods 14 is large, so that a plurality of telescopic rods 14 are matched with the inner ring 12 and the outer ring 11 to form a filter screen, and rainwater flows into the accommodating cavity 21 through gaps between the adjacent telescopic rods 14. So that larger impurities are blocked out of the accommodating cavity 21 by the grate assembly 1 and smaller impurities flow into the accommodating cavity 21 along with the rainwater.

Referring to fig. 1, 4 and 6, the upper surface of the outer ring 11 is attached with a fixing ring 4, the fixing ring 4 is coaxially arranged with the outer ring 11, and the upper surface of the fixing ring 4 is slightly lower than the upper surface of the bridge. The bottom wall of the fixed ring 4 is fixedly connected with a plurality of fixed blocks 41, the upper surface of the outer ring 11 is provided with slots 111 corresponding to the fixed blocks 41 one by one, and the fixed blocks 41 are in plug-in fit with the slots 111.

The fixing block 41 is inserted into the insertion groove 111, thereby positioning the fixing ring 4 on the outer ring 11.

Referring to fig. 3 and 4, a positioning block 5 is disposed at the center of the fixing ring 4, the positioning block 5 is cylindrical and is coaxially disposed with the fixing ring 4, the positioning block 5 is inserted into the inner ring 12, and when the plurality of holding blocks 121 are mutually close to each other, the holding blocks 121 are abutted against the positioning block 5. Thus, the clasping block 121 improves the stability of the positioning block 5.

Referring to fig. 6, four fixing bars 42 are fixedly connected between the fixing ring 4 and the positioning block 5, the four fixing bars 42 are distributed around the positioning block 5, and the fixing bars 42 are directed to the center of the fixing ring 4.

The fixed rods 42 are arranged in a small number, so that the weight is reduced, and the positioning blocks 5 and the fixed rings 4 are conveniently detached from the grate assembly 1.

Referring to fig. 3 and 6, a driving screw 6 is rotatably connected to the positioning block 5 through a bearing, and the driving screw 6 is vertically arranged and coaxial with the positioning block 5. The driving screw 6 is inserted into the accommodating chamber 21 after passing through the inside of the inner ring 12, and the driving screw 6 is screwed with a driving block 61. To facilitate rotation of the drive screw 6, a knob 62 is fixed to the top end of the drive screw 6.

Referring to fig. 3, a collecting box 7 is placed in the accommodating cavity 21, the collecting box 7 is in a conical shape with a downward tip, an upper side of the collecting box 7 is opened, the collecting box 7 is of a porous structure, and the collecting box 7 is coaxial with the embedded pipe 3.

After the rainwater flows into the accommodating cavity 21, the rainwater flows into the collecting box 7, the collecting box 7 filters the rainwater, and the filtered rainwater flows into the embedded pipe 3, so that the filtered rainwater is collected through the embedded pipe 3, and water resources are saved.

Referring to fig. 3 and 6, a shield 8 is connected to the upper surface of the collection box 7, and the shield 8 is coaxially provided with the drive screw 6 and the collection box 7, respectively. The protective cover 8 comprises a plurality of expansion plates 81, and the expansion plates 81 are distributed along the circumference of the collecting box 7.

Referring to fig. 6 and 7, the expansion plate 81 includes a fixing plate 811 and a rotating plate 812, the fixing plate 811 and the rotating plate 812 are arc-shaped plates, the plurality of fixing plates 811 are uniformly distributed around the axis of the driving screw 6, and a space is provided between adjacent fixing plates 811. The bottom wall of the fixing plate 811 is fixedly connected to the upper end surface of the collection box 7, and the bottom wall of the rotating plate 812 is slidably attached to the upper end surface of the collection box 7. One planar side wall of the fixing plate 811 is closed, and the other planar side wall is provided with an arc-shaped accommodation groove 813, and the accommodation groove 813 penetrates through the top wall and the bottom wall of the fixing plate 811. Thereby making the inside of the fixing plate 811 hollow. The rotation plate 812 is rotatable into the accommodating groove 813 when rotated around the axis of the shield 8.

The accommodating groove 813 plays a role of guiding the rotation of the rotation plate 812, and improves the stability of the rotation plate 812 when rotating.

Rotate the rotor plate 812 to holding tank 813 in for have the space between the adjacent fixed plate 811, thereby be convenient for rainwater entering protection casing 8 gets into in the collection box 7, rotate the rotor plate 812 to holding tank 813 outside, make rotor plate 812 contradict in adjacent fixed plate 811, be convenient for seal the circumference of protection casing 8.

Referring to fig. 7, a guide groove 814 is formed in a plate surface of the fixing plate 811 facing the inside of the protective cover 8, the guide groove 814 is an arc-shaped groove, the guide groove 814 is communicated with the accommodating groove 813, a driving rod 63 is fixedly connected between the rotating plate 812 and the driving block 61, the driving rod 63 is arranged in the guide groove 814 in a penetrating manner, and the driving rod 63 slides in the guide groove 814 when rotating along with the driving block 61. The guide groove 814 plays a role in guiding the driving rod 63, so that stability of the driving rod 63 during rotation is improved, and stability of the rotating plate 812 during rotation is further improved.

Referring to fig. 3 and 6, a regular hexagonal guide ring groove 51 is vertically formed in the bottom wall of the positioning block 5, a regular hexagonal lifting sleeve 52 is slidably arranged in the guide ring groove 51, a driving screw 6 is coaxially arranged in the lifting sleeve 52 in a penetrating manner, and a gap is formed between the driving screw 6 and the inner wall of the lifting sleeve 52.

Referring to fig. 6 and 7, the top end of the fixing plate 811 is fixedly connected to the bottom wall of the lifting sleeve 52, and the top end of the rotating plate 812 is rotatably attached to the bottom wall of the lifting sleeve 52.

When the impurity in the collection box 7 needs to be cleared up, the staff rotates drive screw 6, and drive screw 6 drives drive piece 61 and rotates, and drive piece 61 drives a plurality of actuating levers 63 and rotates, and actuating lever 63 drives the rotation board 812 and rotate, when the rotation board 812 contradicts in adjacent fixed plate 811, the circumference of protection casing 8 is in the closed state this moment, and protection casing 8 plays the effect of sheltering from to the upside of collection box 7 to the impurity in the collection box 7 has been reduced and has been spilled the possibility in the collection box 7.

The rotating plate 812 is abutted against the adjacent fixing plate 811 and cannot continue to rotate, so that the rotation of the driving block 61 is limited, the driving block 61 ascends along the axial direction of the driving screw 6, the driving block 61 drives the rotating plate 812 to ascend, the rotating plate 812 drives the lifting sleeve 52 to ascend, the lifting sleeve 52 drives the fixing plate 811 to ascend, and the fixing plate 811 drives the collecting box 7 to ascend. When the outer wall of the protective cover 8 abuts against the enclasping blocks 121, the protective cover 8 drives the enclasping blocks 121 to overcome the elastic force of the elastic piece 13 and separate away from each other, so that the protective cover 8 and the collecting box 7 are gradually separated from the grate assembly 1 upwards.

Because the driving screw 6 has self-locking property, the protection cover 8 and the collection box 7 are not easy to slide down due to the action of gravity, and the ascending stability of the collection box 7 is improved.

When the holding blocks 121 are gradually far away, the positioning block 5, the fixing ring 4 and the fixing rod 42 are pulled upwards after the inner ring 12 is unfolded, so that the positioning block 5 is detached from the grate assembly 1. The positioning block 5 drives the driving screw 6, the protective cover 8 and the collecting box 7 to move upwards, so that the collecting box 7 is separated from the accommodating cavity 21 and the grate assembly 1. Then the driving screw 6 is rotated again so that the rotating plate 812 is received in the receiving groove 813, thereby opening the protection cover 8, facilitating the pouring out of the foreign matters in the collecting box 7, and cleaning the foreign matters in the collecting box 7.

Because the interval between the collecting box 7 and the positioning block 5 is gradually reduced in the process of taking out the collecting box 7, the vertical length of the whole assembly of the positioning block 5, the driving screw 6 and the collecting box 7 is shortened, and the collecting box 7 is convenient for workers to take out from the accommodating cavity 21.

After taking out the collecting box 7 from the accommodating cavity 21, the plurality of enclasping blocks 121 are enclasped again under the driving action of the elastic ring, so that the grate component 1 continues to filter rainwater, the upper side of the accommodating cavity 21 cannot be in a long-time open state, the possibility that impurities with larger volume fall into the accommodating cavity 21 is reduced, the possibility that pedestrians or wheels of vehicles are blocked in the accommodating cavity 21 is avoided, and the safety is improved.

When the collecting box 7 is put into the accommodating cavity 21, the driving screw 6 is rotated, so that after the rotating plate 812 completely enters the accommodating groove 813, the rotating plate 812 cannot continue to rotate, and the driving block 61 cannot continue to rotate, so that the driving block 61 descends, and the driving block 61 drives the driving rod 63, the protective cover 8 and the collecting box 7 to synchronously descend.

By contracting or extending the distance between the positioning block 5 and the collecting box 7, the effect of convenient disassembly or installation of the collecting box 7 is achieved.

Referring to fig. 3, 4 and 8, in addition, in order to improve stability when the protection cover 8 drives the enclasping block 121 to move, an abutting inclined surface 123 is provided at a junction of an inner wall of the enclasping block 121 facing the driving screw 6 and the bottom wall, and the enclasping block 121 is driven to move by abutting against the abutting inclined surface 123 when the protection cover 8 ascends. The contact area between the enclasping block 121 and the protective cover 8 is increased by the abutting inclined surface 123, and the stability of the protective cover 8 when driving the enclasping block 121 to move is improved.

The implementation principle of the municipal bridge water discharge device easy to clean is as follows: rainwater flows into the accommodating chamber 21 through the gap between the adjacent telescopic links 14. So that larger impurities are blocked out of the accommodating cavity 21 by the grate assembly 1 and smaller impurities flow into the accommodating cavity 21 along with the rainwater.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. Municipal bridge drainage device of easy clearance, including comb subassembly (1), hold box (2), pre-buried pipe (3), hold the inner chamber of box (2) for funnel-shaped hold chamber (21), comb subassembly (1) connect in hold the top of box (2), pre-buried pipe (3) communicate in the bottom that holds box (2), comb subassembly (1) include outer ring (11), inner ring (12), elastic component (13), inner ring (12) include a plurality of enclasping piece (121), enclasping piece (121) are followed radial slip setting of outer ring (11), elastic component (13) are used for driving a plurality of enclasping piece (121) draw close each other, enclasping piece (121) with be connected with telescopic link (14) between outer ring (11), a plurality of telescopic link (14) point to the center of outer ring (11), be provided with in holding box (2) and collect box (7), collect box (7) for porous structure, its characterized in that: the utility model discloses a rotary type dust collector is characterized in that a positioning block (5) is detachably connected to a grate component (1), a driving screw (6) is rotationally connected to the positioning block (5), the driving screw (6) is vertically arranged, the driving screw (6) passes behind an inner ring (12) is inserted into a containing cavity (21), the upper end face of an outer ring (11) is provided with a fixed ring (4), the bottom wall of the fixed ring (4) is fixedly provided with a fixed block (41), the upper end face of the outer ring (11) is provided with a slot (111) for the fixed block (41) to be inserted, a fixed rod (42) is fixedly connected between the fixed ring (4) and the positioning block (5), a driving block (61) is connected to the driving screw (6), the top of a collecting box (7) is connected with a protective cover (8), the protective cover (8) is in a circular truncated cone-shaped arrangement with an upward tip, the protective cover (8) comprises a plurality of telescopic plates (81), the telescopic plates (81) are distributed along the circumference of the collecting box (7), the telescopic plates (812) are distributed on the fixed plate (811) and comprise the fixed plate (811) and the fixed plate (811) is fixedly connected to the rotary plate (811), an accommodating groove (813) is formed in one side wall of the fixing plate (811), the rotating plate (812) can rotate to the accommodating groove (813), the rotating plate (812) is connected with the driving block (61), the positioning block (5) is connected with the lifting sleeve (52) in a sliding mode along the vertical direction, the top end of the fixing plate (811) is fixed to the lifting sleeve (52), the top end of the rotating plate (812) is abutted to the lifting sleeve (52), the driving screw (6) is arranged in the lifting sleeve (52) in a penetrating mode, and the cross section of the lifting sleeve (52) is polygonal.

2. The easy-to-clean municipal bridge drainage device according to claim 1, wherein: the rotary plate (812) and the driving block (61) are connected with a driving rod (63), one side of the fixing plate (811) facing the driving block (61) is provided with a guide groove (814), the guide groove (814) is communicated with the accommodating groove (813), and when the driving rod (63) rotates around the driving screw (6), the driving rod (63) slides in the guide groove (814).

3. The easy-to-clean municipal bridge drainage device according to claim 1, wherein: the enclasping block (121) is provided with conflict inclined plane (123) towards the junction of lateral wall and diapire of drive screw (6), conflict inclined plane (123) are used for with the outer wall conflict of protection casing (8).