Drill bit for dredging and cleaning pipeline

Abstract

The invention relates to the field of drill bits, in particular to a pipeline dredging and cleaning drill bit which comprises a drill body and a cleaning assembly, a water inlet flow channel is formed in the end face of the drill body, a first water outlet and a second water outlet are formed in the inner wall of the water inlet flow channel at intervals, and the cleaning assembly comprises a first elastic piece, a control piston and a scraper blade. One end of the first elastic part in the elastic direction is connected to the inner wall of the water inlet runner, the other end of the first elastic part in the elastic direction is connected to the surface of the control piston, a through runner is formed in one side of the control piston, and a rotating cavity for the scraper to rotate is formed in the inner wall of the first water outlet. Through the arrangement of the first elastic part, the control piston and the scraping plate, the size of the water pressure entering the water inlet pipeline is adjusted, smashing and cleaning treatment on mud plates in the drainage pipeline is achieved, the step of cleaning the mud plates in the drainage pipeline is simplified, and therefore the obstacle removing cost of the drainage pipeline is reduced.

Description

Technical Field

[0001] The present application relates to the field of drill bits, and in particular to a drill bit for dredging and cleaning pipelines. Background Art

[0002] During the construction process, the phenomenon of secretly discharging muddy water through drainage pipes has always been common; after the muddy water enters the drainage pipe, due to its high density and poor fluidity, the muddy water will solidify to form mud plates in the drainage pipe, reducing the water flow cross-sectional area in the drainage pipe, making it difficult for the drainage pipe to reach the design load.

[0003] It is difficult for staff to clean the cement slurry slabs in the drainage pipes, thereby increasing the cost of cleaning the drainage pipes. Summary of the Invention

[0004] In order to improve the problem that cement slurry slabs in drainage pipes are difficult to clean, the present application provides a drill bit for clearing pipes.

[0005] This application provides a drill bit for clearing and cleaning pipes, which adopts the following technical solution: A drill bit for dredging and cleaning pipes comprises a drill body and a cleaning assembly, wherein the end face of the drill body is provided with a water inlet channel for connecting to a water pipe of a dredging vehicle, the inner wall of the water inlet channel is provided with a first water outlet and a second water outlet at intervals, the first water outlet and the second water outlet both pass through the outer wall of the drill body, and the first water outlet is located on the side of the second water outlet away from the water pipe of the dredging vehicle, the cleaning assembly comprises an elastic member, a control piston and a scraper, one end of the elastic member in the elastic direction is connected to the inner wall of the water inlet channel, the other end of the elastic member in the elastic direction is connected to the surface of the control piston, the elastic member has elastic force to drive the control piston to slide in the direction close to the water outlet. The control piston moves, and the end face of the control piston presses against the inner wall of the water inlet channel and separates the water outlet 1 and the water inlet channel. A through flow channel is provided on the side of the control piston toward the water outlet 1, and the through flow channel passes through the end face of the control piston in the direction close to the water pipe of the dredging vehicle. A rotating chamber for the rotation of the scraper is provided on the inner wall of the water outlet 1. When the through flow channel connects the water inlet channel and the water outlet 1, the water in the water pipe of the dredging vehicle passes through the water inlet channel and the through flow channel in turn and impacts the scraper in the rotating chamber from the water outlet 1, driving the scraper to rotate in the direction away from the rotating chamber, and the end of the scraper protruding from the drill body presses against the mud plate in the drainage pipe.

[0006] By adopting the above technical solution, the elastic force of the elastic member 1 drives the control piston to slide in the direction close to the water outlet 1, and the end face of the control piston is pressed against the inner wall of the water inlet channel and separates the water outlet 1 and the water inlet channel; when it is necessary to crush the mud slabs in the drainage pipe, the drill body has an end portion of the water inlet channel and is fixed to the water pipe of the dredging vehicle, and the end portion of the drill body is embedded in the inner cavity of the drainage pipe, and the water pressure entering the water inlet channel of the dredging vehicle water pipe is adjusted, and the control piston is driven to overcome the elastic force of the elastic member 1 and slide in the direction close to the water outlet 2, and the through channel connects the water inlet channel and the water outlet 2, and the water in the water pipe of the dredging vehicle passes through the water inlet channel and the through channel in turn and is discharged from the water outlet 1, and the water discharged from the water outlet 1 is ejected backward as a power, driving the drill body to advance and shake to hit the mud slabs in the drainage pipe, driving the mud slabs to be broken, thereby realizing the crushing of the mud slabs in the drainage pipe; when it is necessary to crush the mud in the drainage pipe When the plates are being cleaned, the water pressure in the water inlet channel of the dredging vehicle is reduced, driving the control piston to slide along the inner wall of the water inlet channel toward the water outlet one, and the through channel connects the water inlet channel and the water outlet one. The water in the water pipe of the dredging vehicle enters the rotating chamber through the water inlet channel, the through channel and the water outlet in turn, and the water flow impacts the scraper surface in the rotating chamber, driving the scraper to rotate in the direction away from the rotating chamber, and the end of the scraper protruding from the drill body abuts against the broken mud plates in the drainage pipe, and then the pulling force of the dredging vehicle is used to drive the drill body out of the inner cavity of the drainage pipe, the scraper surface abuts against the broken mud plates and drives the broken mud plates out of the drainage pipe, thereby realizing the cleaning of the mud plates in the drainage pipe. By adjusting the water pressure entering the water inlet pipe, the mud plates in the drainage pipe can be broken and cleaned, simplifying the steps of cleaning the mud plates in the drainage pipe, thereby reducing the cost of clearing the drainage pipe.

[0007] Optionally, the drill body is connected to a power assembly, which includes a driving piston, an active piston and a driven piston. A driving chamber for sliding the driving piston is provided on the inner wall of the water outlet. The active piston is connected to the end face of the driving piston facing the water inlet channel. An active flow channel for sliding the active piston is provided on the inner wall of the driving chamber. A driven flow channel for sliding the driven piston is provided on the surface of the drill body close to the scraper rotating shaft. The sliding direction of the active piston and the sliding direction of the driven piston are parallel to each other, and the active flow channel is connected to the driven flow channel. A tooth groove 1 is provided on the end face of the driven piston facing the scraper rotating shaft, and a tooth groove 2 meshing with the tooth groove 1 is provided on the end face of the scraper rotating shaft facing the tooth groove 1.

[0008] By adopting the above technical solution, when the through-flow channel is connected to the water inlet channel and the water outlet 1, the water in the water pipe of the dredging vehicle passes through the water inlet channel and the through-flow channel in turn and enters the water outlet 1, and the water in the water outlet 1 impacts the driving piston, driving the driving piston to slide in the direction close to the rotating chamber, driving the active piston to slide along the active flow channel in the direction close to the rotating chamber, the active flow channel is connected to the driven flow channel, and the air pressure in the driven flow channel is reduced, driving the driven piston to slide along the inner wall of the driven flow channel in the direction close to the driven flow channel, the inner wall of the tooth groove 1 engages the inner wall of the tooth groove 2, driving the scraper to rotate in the direction away from the rotating chamber, and the end of the scraper protruding from the drill body abuts the broken mud plate in the drainage pipe, thereby realizing the directional opening of the scraper; at the same time, the water pressure in the water outlet 1 drives the driving piston to separate from the water outlet 1 and impact the scraper plate surface, so that the scraper remains in an open state, thereby improving the stability of the scraper plate surface against the broken mud plate.

[0009] Optionally, the power component also includes an elastic member 2, one end of the elastic member 2 in the elastic direction is connected to the inner wall of the driving chamber, and the other end of the elastic member 2 in the elastic direction is connected to the surface of the driving piston. The elastic member 2 has a tendency to drive the driving piston to slide toward the direction close to the water inlet channel by elastic force.

[0010] By adopting the above technical solution, when the water pipe of the dredging vehicle stops supplying water, the pressure of the water pressure in the water outlet 1 on the driving piston disappears, and the elastic force of the elastic member 2 drives the driving piston to slide along the inner wall of the driving chamber toward the water inlet channel, driving the active piston to slide along the active channel toward the water inlet channel, the air pressure in the active channel increases, the active channel is connected to the driven channel, driving the driven piston to slide along the inner wall of the driven channel toward away from the drill body, the inner wall of the tooth groove 1 engages with the inner wall of the tooth groove 2, driving the scraper to rotate toward the rotating chamber, and the outer peripheral surface of the scraper abuts the inner wall of the rotating chamber, realizing the automatic storage of the scraper.

[0011] Optionally, the power assembly also includes an elastic member three and a limit rod. The inner wall of the rotating chamber near the scraper is provided with a limit chamber for the limit rod to slide. The sliding direction of the limit rod and the sliding direction of the driving piston are parallel to each other. One end of the elastic member three in the elastic force direction is connected to the rod surface of the limit rod, and the other end of the elastic member three in the elastic force direction is connected to the inner wall of the limit chamber. The elastic member three has an elastic force to drive the limit rod to slide toward the direction close to the rotating chamber. The rod surface of the limit rod abuts against the scraper surface and guides the scraper to rotate in the direction away from the rotating chamber, and the elastic coefficient of the elastic member three is smaller than the elastic coefficient of the elastic member two.

[0012] By adopting the above technical solution, the scraper plate surface abuts against the end face of the limit rod facing the rotating cavity and limits the limit rod in the limit cavity. When the scraper rotates in the direction away from the rotating cavity, the limiting effect of the scraper on the limit rod disappears, and the three elastic forces of the elastic member drive the limit rod to slide in the direction close to the rotating cavity. The end of the limit rod protruding from the rotating cavity abuts against the scraper plate surface and drives the scraper to rotate in the direction away from the rotating cavity, making it difficult for the scraper to deflect in the rotating cavity, thereby improving the limiting stability of the scraper in the rotating cavity.

[0013] Optionally, the power assembly further includes a filter ring network, which is connected to the end face of the driving piston facing the water inlet channel, and the filter ring network can filter the mud blocks in the drainage pipe into the water outlet 1.

[0014] By adopting the above technical solution, the filter ring net is connected to the end face of the driving piston facing the water inlet channel. When the water pressure in the water outlet 1 drives the driving piston to separate from the water outlet 1, the outer peripheral surface of the filter ring net is pressed against the inner wall of the water outlet 1, and the water in the water outlet 1 hits the scraper plate surface through the filter ring net. At the same time, the broken mud plates in the drainage pipe are not easy to enter the water outlet 1 through the filter ring net, thereby ensuring the stability of drainage from the water outlet 1.

[0015] Optionally, the scraper is connected to a buffer assembly, which includes a buffer airbag. The buffer airbag is connected to the end face of the scraper facing the bottom wall of the drainage pipe, and the surface of the buffer airbag can abut against the mud slabs broken by the bottom wall of the drainage pipe to form a limit.

[0016] By adopting the above technical solution, the buffer airbag is connected to the end face of the scraper facing the bottom wall of the drainage pipe. The surface of the buffer airbag abuts against the broken mud plate at the bottom of the drainage pipe to form a limit. The pressure of the mud plate on the buffer airbag drives the surface of the buffer airbag to deform, reducing the wear on the scraper, thereby extending the service life of the drill bit used for dredging and cleaning the pipeline.

[0017] Optionally, the buffer assembly includes an inflation piston, and an inflation channel for the inflation piston to slide is opened on the plate surface of the scraper toward the limit rod, and the inflation channel is connected to the inner cavity of the buffer airbag. When the rod surface of the limit rod abuts against the scraper surface, the rod surface of the limit rod abuts against the end surface of the inflation piston protruding from the scraper and drives the inflation piston to slide in the direction close to the inflation channel, and the surface of the buffer airbag is pressurized and expanded.

[0018] By adopting the above technical solution, when the scraper rotates in the direction away from the rotating chamber, the limiting effect of the scraper on the limit rod disappears, and the three elastic forces of the elastic member drive the limit rod to slide along the inner wall of the limit chamber in the direction away from the limit chamber. The end of the limit rod protruding from the limit chamber abuts against the end of the limit rod protruding from the inflation piston and drives the inflation piston to slide in the direction close to the inflation flow channel. The inflation flow channel is connected to the inner cavity of the buffer airbag, and the air in the inflation flow channel enters the inner cavity of the buffer airbag. The surface of the buffer airbag is pressurized and expanded, thereby increasing the pressing force of the buffer airbag on the mud plate, thereby ensuring the stability of the buffer airbag in driving the mud plate to leave the drainage pipe.

[0019] Optionally, the buffer assembly also includes an elastic member four, one end of the elastic member four in the elastic direction is connected to the end face of the inflation piston, and the other end of the elastic member four in the elastic direction is connected to the inner wall of the inflation flow channel, the elastic member four has an elastic force that drives the inflation piston to slide away from the inflation flow channel, and the end of the inflation piston tends to protrude from the scraper plate surface, and the elastic coefficient of the elastic member four is smaller than the elastic coefficient of the elastic member three.

[0020] By adopting the above technical solution, when the scraper rotates toward the rotating chamber, the abutment effect of the limit rod on the inflation piston disappears, and the elastic force of the elastic member drives the inflation piston to slide in the direction away from the inflation flow channel. The end of the inflation piston protrudes from the scraper surface, thereby realizing automatic resetting of the inflation piston. At the same time, the scraper and the buffer airbag are embedded in the rotating chamber, and the surface of the buffer airbag is depressurized and contracted, reducing the storage space of the buffer airbag, thereby improving the convenience of transporting the drill bit for pipeline dredging and cleaning.

[0021] Optionally, the filter ring net is connected to a circulation component, which includes a reciprocating screw and a cleaning ring. The reciprocating screw is rotatably connected to the outer ring wall of the filter ring net, the axis of the reciprocating screw and the sliding direction of the driving piston are parallel to each other, the inner ring wall of the cleaning ring is coaxially sleeved on the outer ring wall of the filter ring net, and the cleaning ring is threadedly connected to the outer wall of the reciprocating screw. The cleaning ring slides on the outer ring wall of the filter ring net along the axis of the reciprocating screw, and the inner ring wall of the cleaning ring presses against the outer ring wall of the filter ring net and scrapes away impurities on the outer ring wall of the filter ring net.

[0022] By adopting the above technical solution, the cleaning ring slides back and forth on the outer ring wall of the filter ring net along the axis of the reciprocating screw, and the inner ring wall of the cleaning ring presses against the outer ring wall of the filter ring net and scrapes off the debris on the outer ring wall of the filter ring net, so that small mud plates are not easy to clog the filter ring net surface, thereby ensuring the stability of the water in the water outlet passing through the filter ring net and impacting the scraper plate surface.

[0023] Optionally, the circulation component further includes a circulation impeller, which is coaxially connected to the end face of the reciprocating screw near the driving piston. The water in the water outlet 1 passes through the filter ring net and impacts the circulation impeller blades, driving the circulation impeller to rotate.

[0024] By adopting the above technical solution, the water in the water outlet passes through the filter ring and impacts the circulating impeller blades, driving the circulating impeller to rotate and driving the reciprocating screw to rotate. There is no need for an external power device to drive the reciprocating screw to rotate, which reduces energy consumption and thus embodies the concept of energy saving.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. Elastic part 1, control the setting of piston and scraper, by adjusting the water pressure entering the water inlet pipe, to achieve the breaking and cleaning of mud plates in the drainage pipe, simplifying the cleaning process of mud plates in the drainage pipe, thereby reducing the cost of drainage pipe cleaning; 2. The arrangement of the driving piston, active piston and driven piston realizes the directional opening of the scraper. At the same time, the water pressure in the outlet 1 drives the driving piston out of the outlet 1 and impacts the scraper surface, keeping the scraper in the open state, thereby improving the stability of the scraper surface against the broken mud plate. 3. The setting of the elastic member 2, the inner wall of the tooth groove 1 meshes with the inner wall of the tooth groove 2, drives the scraper to rotate toward the direction close to the rotating chamber, and the outer peripheral surface of the scraper abuts the inner wall of the rotating chamber, realizing the automatic storage of the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application.

[0027] Figure 2 It is a cross-sectional view in an embodiment of the present application, mainly showing the through flow channel.

[0028] Figure 3 It is a partial cross-sectional view in an embodiment of the present application, mainly showing the circulation components.

[0029] Explanation of reference numerals: 1. drill body; 11. mounting portion; 111. water outlet 1; 112. water inlet channel; 113. water outlet 2; 114. through channel; 115. driving chamber; 116. active channel; 117. driven channel; 118. rotating chamber; 119. limiting chamber; 120. sliding chamber; 12. mud chiseling portion; 2. cleaning assembly; 21. elastic member 1; 22. control piston; 23. scraper; 231. tooth groove 2 ; 232. Inflatable flow channel; 3. Power assembly; 31. Filter ring net; 32. Drive piston; 33. Active piston; 34. Driven piston; 341. Tooth groove one; 35. Elastic part two; 36. Elastic part three; 37. Limit rod; 4. Circulation assembly; 41. Reciprocating screw; 42. Cleaning ring; 43. Circulating impeller; 5. Buffer assembly; 51. Buffer airbag; 52. Inflatable piston; 521. Guide surface; 53. Elastic part four. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The embodiment of the present application discloses a drill bit for clearing and cleaning pipelines. Figure 1 and Figure 2 A drill bit for dredging and cleaning pipes includes a drill body 1 and a cleaning assembly 2. The drill bit includes a mounting portion 11 and a mud-cutting portion 12. In the embodiment of the present application, the mounting portion 11 is cylindrical, and the mud-cutting portion 12 is conical. One end of the mounting portion 11 in the axial direction is integrally formed and coaxially fixed to the end face of the mud-cutting portion 12. The end of the mud-cutting portion 12 away from the mounting portion 11 can impact and crush the mud plate. The other end of the mounting portion 11 in the axial direction is coaxially provided with a water inlet channel 112 for installing the water pipe of the dredging vehicle. The water inlet channel 112 is provided on the same axis as the water pipe of the dredging vehicle. The inner wall of the channel 112 is provided with a water outlet 111 and a water outlet 2 113, and the water outlet 2 113 is located between the water outlet 111 and the mud chiseling part 12. The water outlet 111 and the water outlet 2 113 both pass through the outer wall of the mounting part 11 in a direction away from the axis of the mounting part 11. The number of water outlet 111 can be one, two or more. In the embodiment of the present application, the number of water outlet 111 is two, and the two water outlet 111 are evenly distributed around the axis of the mounting part 11.

[0032] Reference Figure 1 and Figure 2 The cleaning component 2 is installed on the mounting portion 11. The cleaning component 2 can control the directional opening and closing of the water outlet 111 and the water outlet 111. The cleaning component 2 includes an elastic member 21, a control piston 22 and a scraper 23. The material of the control piston 22 can be rubber or silicone. In the embodiment of the present application, the material of the control piston 22 is rubber, which has a certain deformation ability. The control piston 22 is slidably connected to the inner wall of the water inlet channel 112. The sliding direction of the control piston 22 is parallel to the axis of the mounting portion 11. The end surface of the control piston 22 facing the water outlet 111 is provided with a through flow channel 114. The through flow channel 114 penetrates the outer wall of the control piston 22 in the direction close to the water pipe of the dredging vehicle.

[0033] Reference Figure 1 and Figure 2 The elastic member 21 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member 21 is a compression spring with a certain deformation ability. One end of the elastic member 21 in the elastic direction is connected to the inner wall of the water inlet channel 112, and the other end of the elastic member 21 in the elastic direction is connected to the surface of the control piston 22. The elastic member 21 has an elastic force to drive the control piston 22 to slide in the direction away from the water outlet 111. The surface of the control piston 22 is pressed against the inner wall of the water inlet channel 112 and separates the water inlet channel 112 and the water outlet 111, and the through channel 114 tends to be located on the side of the water outlet 111 away from the water outlet 2 113.

[0034] Reference Figure 1 and Figure 2 The number of scrapers 23 can be one, two or more. In the embodiment of the present application, the number of scrapers 23 is two. The scrapers 23 correspond one to one with the water outlet 111. The inner wall of the water outlet 111 is provided with a rotating cavity 118 for the scraper 23 to rotate. The rotation axis of the scraper 23 and the axis of the mounting portion 11 are perpendicular to each other, and the outer peripheral surface of the scraper 23 abuts against the inner wall of the rotating cavity 118 to form a limit.

[0035] Reference Figure 1 and Figure 2 When the drill bit for clearing and unclogging pipes is used, the end of the mounting portion 11 away from the mud-cutting portion 12 is mounted on the water pipe of the dredging vehicle, and the water inlet channel 112 is connected to the inner cavity of the water pipe of the dredging vehicle. The water pressure entering the water inlet channel 112 of the dredging vehicle is adjusted to drive the control piston 22 to overcome the elastic force of the elastic member 1 21 and slide toward the direction of the water outlet 2 113. The through channel 114 connects the water inlet channel 112 and the water outlet 2 113, and the end face of the control piston 22 is pressed against the inner cavity of the water inlet channel 112. The wall separates the water inlet channel 112 and the water outlet 111. The water in the dredging vehicle water pipe passes through the water inlet channel 112 and the pipe channel in turn and is discharged from the water outlet 111. The water discharged from the water outlet 111 is ejected backward as a power, driving the mud chiseling part 12 to rush forward and shake to hit the mud plate in the drainage pipe. The mud plate is crushed under pressure, thereby breaking up the mud plate in the drainage pipe. The staff reduces the water pressure of the dredging vehicle water pipe entering the water inlet channel 112. The control piston 22 is driven to slide along the inner wall of the water inlet channel 112 toward the direction of the water outlet 111, and the through channel 114 connects the water inlet channel 112 and the water outlet 111. The water in the dredge water pipe passes through the water inlet channel 112, the through channel 114 and the water outlet 111 in sequence and enters the rotating chamber 118 to impact the surface of the scraper 23. The scraper 23 is affected by the water pressure and rotates in the direction away from the rotating chamber 118. The end of the scraper 23 protruding from the drill body 1 abuts against the drainage pipe. The staff then uses the power of the dredging vehicle to drive the drill body 1 out of the drainage pipe, and the scraper 23 abuts against the broken mud plates and drives the broken mud plates out of the drainage pipe, thereby completing the cleaning of the mud plates in the drainage pipe. It only needs to adjust the water pressure in the water inlet channel 112 to complete the breaking and cleaning of the mud plates in the drainage pipe, thereby simplifying the steps of cleaning the mud plates in the drainage pipe and reducing the cost of clearing the drainage pipe.

[0036] Reference Figure 2 and Figure 3The mounting portion 11 is equipped with a power assembly 3, which can drive the scraper 23 to rotate in a direction away from the rotating chamber 118; the power assembly 3 includes a filter ring 31, a driving piston 32, an active piston 33, a driven piston 34, an elastic member 2 35, an elastic member 36 and a limit rod 37. The driving piston 32, the active piston 33 and the driven piston 34 can be made of rubber or silicone. In the embodiment of the present application, the driving piston 32, the active piston 33 and the driven piston 34 are all made of rubber, which has a certain deformation ability. The inner wall of the water outlet near the rotating chamber 118 is provided with a driving chamber 115 for the driving piston 32 to slide. The sliding direction of the driving piston 32 and the sliding direction of the control piston 22 are perpendicular to each other. The end of the active piston 33 is integrally formed and fixed to the end face of the driving piston 32 facing the water inlet channel 112. The inner wall of the driving chamber 115 is provided with an active flow channel 116 for sliding of the active piston 33. The sliding direction of the active piston 33 and the sliding direction of the driving piston 32 are parallel to each other. The end face of the drill body 1 close to the rotating axis of the scraper 23 is provided with a driven flow channel 117 for sliding of the driven piston 34. The sliding direction of the active piston 33 and the sliding direction of the driven piston 34 are parallel to each other. The driven flow channel 117 connects the active flow channel 116 and the rotating chamber 118.

[0037] Reference Figure 2 and Figure 3 The end surface of the driven piston 34 facing the rotating shaft of the scraper 23 is provided with a tooth groove 1 341, and the end surface of the rotating shaft of the scraper 23 facing the tooth groove 1 341 is provided with a tooth groove 231 engaged with the tooth groove 1 341; the elastic member 2 35 and the elastic member 3 36 can be compression springs or tension springs. In the embodiment of the present application, the elastic member 2 35 and the elastic member 3 are both compression springs with a certain deformation ability. One end of the elastic member 2 35 in the elastic direction is connected to the inner wall of the driving chamber 115, and the other end of the elastic member 2 35 in the elastic direction is connected to the end surface of the driving piston 32. The elastic member 2 35 has a tendency to drive the driving piston 32 to slide toward the direction close to the water inlet channel 112 by elastic force.

[0038] Reference Figure 2 and Figure 3 A limiting cavity 119 for the sliding of the limiting rod 37 is opened on the inner wall of the rotating cavity 118 near the rotating shaft of the scraper 23. The sliding direction of the limiting rod 37 is parallel to the sliding direction of the active piston 33. One end of the elastic member 36 in the elastic direction is connected to the rod surface of the limiting rod 37, and the other end of the elastic member 36 in the elastic direction is connected to the inner wall of the limiting cavity 119. The elastic member 36 has elastic force to drive the limiting rod 37 to slide in the direction away from the limiting cavity 119, and the end surface of the limiting rod 37 protruding from the rotating cavity 118 abuts against the surface of the scraper 23 to form a limiting tendency.

[0039] Reference Figure 2 and Figure 3The elastic coefficient of the elastic member 36 is smaller than the elastic coefficient of the elastic member 2 35. The end of the filter ring net 31 is fixed to the end face of the driving piston 32 facing the water inlet channel 112. The inner wall of the driving chamber 115 is provided with a sliding chamber 120 for the sliding of the filter ring net 31. The sliding direction of the filter ring net 31 and the sliding direction of the driving piston 32 are parallel to each other. The inner circle of the filter ring net 31 surrounds the water inlet 1; when the through channel 114 connects the water inlet channel 112 and the water outlet 111, the water in the dredging vehicle water pipe passes through the water inlet channel 112 and the through channel 114 in turn and enters the water inlet 1. The water pressure in the water inlet 1 increases, driving the driving piston 32 to slide along the inner wall of the driving chamber 115 toward the direction away from the water inlet channel 112, driving the active piston 33 to slide along the active channel 116 away from the water inlet The scraper 23 is driven to rotate along the inner wall of the rotating cavity 118 in the direction away from the drill body 1. The end of the scraper 23 protruding from the drill body 1 abuts against the broken mud plate in the drainage pipe to form a limit. At the same time, the limiting effect of the scraper 23 on the limiting rod 37 disappears. The elastic force of the elastic member 36 drives the limiting rod 37 to slide in the direction away from the limiting cavity 119. The end face of the limiting rod 37 protruding from the rotating cavity 118 abuts against the surface of the scraper 23, and limits the scraper 23 to rotate on the inner wall of the rotating cavity 118, thereby improving the limiting stability of the scraper 23 in the rotating cavity 118.

[0040] Reference Figure 2 and Figure 3 At the same time, the water pressure in the water outlet 111 drives the driving piston 32 to slide along the inner wall of the driving chamber 115 toward the rotating chamber 118, and the driving piston 32 breaks away from the water outlet 111. The sealing effect of the driving piston 32 on the water outlet 111 disappears, and the water discharged from the water outlet 111 impacts the surface of the scraper 23, driving the scraper 23 to rotate in the direction away from the rotating chamber 118, thereby further improving the stability of the scraper 23 rotating in the direction away from the rotating chamber 118; at the same time, the inner circle of the filter ring network 31 surrounds the water inlet 1, so that the mud slabs in the drainage pipe are not easy to pass through the filter ring network 31 into the water outlet 111 and cause blockage, thereby improving the drainage stability of the water outlet 111.

[0041] Reference Figure 2 and Figure 3The filter ring net 31 is equipped with a circulation component 4, which can clean the impurities on the outer peripheral surface of the filter ring net 31; the circulation component 4 includes a reciprocating screw 41, a cleaning ring 42 and a circulation impeller 43. The reciprocating screw 41 is rotatably connected to the outer ring wall of the filter ring net 31, and the axis of the reciprocating screw 41 and the axis of the filter ring net 31 are parallel to each other. The inner ring wall of the cleaning ring 42 is coaxially sleeved on the outer ring wall of the filter ring net 31, and the cleaning ring 42 is threadedly connected to the outer wall of the reciprocating screw 41. The cleaning ring 42 slides back and forth on the outer ring wall of the filter ring net 31 along the axis of the reciprocating screw 41, and the inner ring wall of the cleaning ring 42 presses against the outer ring wall of the filter ring net 31 and scrapes off impurities on the surface of the filter ring net 31, thereby realizing directional cleaning of impurities on the surface of the filter ring net 31.

[0042] Reference Figure 2 and Figure 3 The circulating impeller 43 is coaxially fixed to the end face of the reciprocating screw 41 close to the driving piston 32. The water in the water outlet 111 passes through the filter ring 31 and impacts the blades of the circulating impeller 43. The blades of the circulating impeller 43 rotate due to the impact of the water pressure, driving the reciprocating screw 41 to rotate around its own axis. There is no need for an external power device to drive the reciprocating screw 41 to rotate, which reduces energy loss and thus embodies the concept of energy saving.

[0043] Reference Figure 1 and Figure 3 The scraper 23 is equipped with a buffer assembly 5, which can reduce the wear on the scraper 23. The buffer assembly 5 includes a buffer airbag 51, an inflatable piston 52 and an elastic member 53. The materials of the buffer airbag 51 and the inflatable piston 52 can be rubber or silicone. In the embodiment of the present application, the materials of the buffer airbag 51 and the inflatable piston 52 are both rubber, which has a certain deformation ability. The buffer airbag 51 is fixed on the end face of the scraper 23 facing the bottom wall of the drainage pipe. The surface of the buffer airbag 51 can abut against the broken mud plates in the drainage pipe to form a limit. The buffer airbag 51 is squeezed and deformed by the mud plates, reducing the wear on the scraper 23, thereby extending the service life of the drill bit used for dredging and cleaning the pipeline.

[0044] Reference Figure 1 and Figure 3 The scraper 23 is provided with an inflation channel 232 for the inflation piston 52 to slide on the plate surface facing the limit rod 37. The inflation channel 232 is connected to the inner cavity of the buffer airbag 51. The elastic member 4 53 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member 4 53 is a compression spring with a certain deformation ability. One end of the elastic member 4 53 in the elastic direction is connected to the end face of the inflation piston 52, and the other end of the elastic member 4 53 in the elastic direction is connected to the inner wall of the inflation channel 232. The elastic member 4 53 has the elastic force to drive the inflation piston 52 to slide in the direction away from the inflation channel 232, and the end of the inflation piston 52 tends to protrude from the plate surface of the scraper 23, and the elastic coefficient of the elastic member 4 53 is less than the elastic coefficient of the elastic member 36.

[0045] Reference Figure 1 and Figure 3 The end surface of the inflation piston 52 protruding from the scraper 23 is provided with a guide surface 521, and the guide surface 521 is in the shape of a circular arc convex; when the scraper 23 slides in the direction away from the rotating chamber 118, the elastic force of the elastic member 36 drives the limit rod 37 to slide in the direction away from the limit chamber 119, and the guide surface 521 abuts against the rod surface of the limit rod 37 and guides the inflation piston 52 to slide in the direction close to the inflation flow channel 232. The scraper 23 plate surface abuts against the rod surface of the limit rod 37 to form a limit, and at the same time, the inflation flow channel 232 is connected to the inner cavity of the buffer airbag 51, and the surface of the buffer airbag 51 is pressurized and expanded, thereby ensuring the pressing force between the buffer airbag 51 and the mud plate, thereby improving the cleaning efficiency of the mud plate in the cleaning pipeline.

[0046] The working principle of the drill bit for dredging and cleaning pipes of the present application is as follows: when the drill bit for dredging and cleaning pipes is used, the end of the mounting portion 11 away from the mud-cutting portion 12 is mounted on the water pipe of the dredging vehicle, the water inlet channel 112 is connected to the inner cavity of the water pipe of the dredging vehicle, and the water pressure entering the water inlet channel 112 of the dredging vehicle is adjusted to drive the control piston 22 to overcome the elastic force of the elastic member 1 21 and slide toward the direction of the water outlet 2 113, and the through channel 114 is connected to the water inlet channel 112 and the water outlet 2 113, and The end face of the control piston 22 is pressed against the inner wall of the water inlet channel 112 and separates the water inlet channel 112 and the water outlet 111. The water in the water pipe of the dredging vehicle passes through the water inlet channel 112 and the pipe channel in turn and is discharged from the water outlet 111. The water discharged from the water outlet 111 is ejected backward as a power to drive the mud chiseling part 12 to rush forward and shake and hit the mud plate in the drainage pipe. The mud plate is crushed under pressure, thereby achieving the crushing of the mud plate in the drainage pipe; the staff reduces the water inlet channel of the dredging vehicle The water pressure entering the water inlet channel 112 drives the control piston 22 to slide along the inner wall of the water inlet channel 112 toward the water outlet 111. The through channel 114 connects the water inlet channel 112 and the water outlet 111. The water in the dredge water pipe passes through the water inlet channel 112, the through channel 114 and the water outlet 111 in sequence and enters the rotating chamber 118 to impact the surface of the scraper 23. The scraper 23 rotates in the direction away from the rotating chamber 118 under the influence of the water pressure, and the scraper 23 protrudes from the end of the drill body 1 The drill body 1 abuts against the broken mud plates in the drainage pipe, and the staff then uses the power of the dredging vehicle to drive the drill body 1 out of the drainage pipe. The scraper 23 abuts against the broken mud plates and drives the broken mud plates out of the drainage pipe, thereby cleaning the mud plates in the drainage pipe. It only needs to adjust the water pressure in the water inlet channel 112 to break and clean the mud plates in the drainage pipe, simplifying the steps of cleaning the mud plates in the drainage pipe, thereby reducing the cost of clearing the drainage pipe.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A drill bit for clearing and unclogging pipes, characterized by: The invention comprises a drill body (1) and a cleaning assembly (2), wherein the end surface of the drill body (1) is provided with a water inlet channel (112) for connecting to a water pipe of a dredging vehicle, and the inner wall of the water inlet channel (112) is provided with a water outlet 1 (111) and a water outlet 2 (113) at intervals, wherein the water outlet 1 (111) and the water outlet 2 (113) both pass through the outer wall of the drill body (1), and the water outlet 1 (111) is located on the side of the water outlet 2 (113) away from the water pipe of the dredging vehicle. The cleaning assembly (2) comprises an elastic member (21), a control piston (22) and a scraper (23), one end of the elastic member (21) in the elastic direction is connected to the inner wall of the water inlet channel (112), and the other end of the elastic member (21) in the elastic direction is connected to the surface of the control piston (22), and the elastic member (21) has an elastic force to drive the control piston (22) to slide in the direction close to the water outlet (111), and the control piston (22) The end face of the control piston (22) is pressed against the inner wall of the water inlet channel (112) and separates the water outlet (111) and the water inlet channel (112). A through channel (114) is provided on the side of the control piston (22) facing the water outlet (111). The through channel (114) passes through the end face of the control piston (22) in the direction close to the dredging vehicle water pipe. A rotating chamber (118) for the scraper (23) to rotate is provided on the inner wall of the water outlet (111). When the through channel (114) is provided, the scraper (23) rotates. When the through flow channel (114) is connected to the water inlet channel (112) and the first water outlet (111), the water in the water pipe of the dredging vehicle sequentially passes through the water inlet channel (112), the through flow channel (114) and impacts the scraper (23) in the rotating chamber (118) from the first water outlet (111), driving the scraper (23) to rotate in a direction away from the rotating chamber (118), and the end of the scraper (23) protruding from the drill body (1) abuts against the mud plate in the drainage pipe.

2. A drill bit for clearing and cleaning pipes according to claim 1, characterized in that: The drill body (1) is connected to a power assembly (3), the power assembly (3) comprising a driving piston (32), an active piston (33) and a driven piston (34), the inner wall of the water outlet is provided with a driving cavity (115) for the driving piston (32) to slide, the active piston (33) is connected to the end face of the driving piston (32) facing the water inlet channel (112), the inner wall of the driving cavity (115) is provided with an active channel (116) for the active piston (33) to slide, the drill body (1) is close to the scraper (2 3) A driven flow channel (117) for sliding of the driven piston (34) is provided on the surface of the rotating shaft, the sliding direction of the active piston (33) and the sliding direction of the driven piston (34) are parallel to each other, and the active flow channel (116) is connected to the driven flow channel (117), and a tooth groove 1 (341) is provided on the end surface of the driven piston (34) facing the rotating shaft of the scraper (23), and a tooth groove 2 (231) meshing with the tooth groove 1 (341) is provided on the end surface of the rotating shaft of the scraper (23) facing the tooth groove 1 (341).

3. A drill bit for clearing and cleaning pipes according to claim 2, characterized in that: The power assembly (3) further comprises a second elastic member (35), one end of the second elastic member (35) in the elastic direction being connected to the inner wall of the driving chamber (115), and the other end of the second elastic member (35) in the elastic direction being connected to the surface of the driving piston (32), and the second elastic member (35) has a tendency to cause the driving piston (32) to slide in a direction close to the water inlet channel (112) due to its elastic force.

4. A drill bit for clearing and cleaning pipes according to claim 3, characterized in that: The power assembly (3) further comprises an elastic member (36) and a limiting rod (37). The inner wall of the rotation chamber (118) near the scraper (23) is provided with a limiting chamber (119) for the limiting rod (37) to slide. The sliding direction of the limiting rod (37) and the sliding direction of the driving piston (32) are parallel to each other. One end of the elastic member (36) in the elastic direction is connected to the rod surface of the limiting rod (37), and the other end of the elastic member (36) in the elastic direction is connected to the inner wall of the limiting chamber (119). The elastic member (36) has an elastic force that drives the limiting rod (37) to slide in the direction close to the rotation chamber (118). The rod surface of the limiting rod (37) abuts against the scraper (23) plate surface and guides the scraper (23) to rotate in the direction away from the rotation chamber (118). The elastic coefficient of the elastic member (36) is smaller than the elastic coefficient of the elastic member (35).

5. The drill bit for clearing and cleaning a pipeline according to claim 2, characterized in that: The power assembly (3) further comprises a filter ring net (31), which is connected to the end face of the driving piston (32) facing the water inlet channel (112), and the filter ring net (31) can filter the mud blocks in the drainage pipe into the water outlet (111).

6. A drill bit for clearing and cleaning pipes according to claim 4, characterized in that: The scraper (23) is connected to a buffer assembly (5), and the buffer assembly (5) includes a buffer airbag (51). The buffer airbag (51) is connected to the end surface of the scraper (23) facing the bottom wall of the drainage pipe. The surface of the buffer airbag (51) can abut against the mud slabs broken by the bottom wall of the drainage pipe to form a limit.

7. A drill bit for clearing and cleaning pipes according to claim 6, characterized in that: The buffer assembly (5) includes an inflation piston (52), and an inflation channel (232) for the inflation piston (52) to slide is opened on the plate surface of the scraper (23) toward the limit rod (37). The inflation channel (232) is connected to the inner cavity of the buffer airbag (51). When the rod surface of the limit rod (37) abuts against the plate surface of the scraper (23), the rod surface of the limit rod (37) abuts against the end surface of the inflation piston (52) protruding from the scraper (23) and drives the inflation piston (52) to slide in the direction close to the inflation channel (232), and the surface of the buffer airbag (51) is pressurized and expanded.

8. The drill bit for clearing and cleaning pipes according to claim 7, characterized in that: The buffer assembly (5) further comprises an elastic member four (53), one end of the elastic member four (53) in the elastic direction is connected to the end face of the inflation piston (52), and the other end of the elastic member four (53) in the elastic direction is connected to the inner wall of the inflation flow channel (232). The elastic member four (53) has an elastic force that drives the inflation piston (52) to slide in a direction away from the inflation flow channel (232), and the end of the inflation piston (52) has a tendency to protrude from the surface of the scraper (23), and the elastic coefficient of the elastic member four (53) is smaller than the elastic coefficient of the elastic member three (36).

9. The drill bit for clearing and cleaning a pipeline according to claim 5, characterized in that: The filter ring net (31) is connected to a circulation component (4), and the circulation component (4) includes a reciprocating screw (41) and a cleaning ring (42). The reciprocating screw (41) is rotatably connected to the outer ring wall of the filter ring net (31). The axis of the reciprocating screw (41) and the sliding direction of the driving piston (32) are parallel to each other. The inner ring wall of the cleaning ring (42) is coaxially sleeved on the outer ring wall of the filter ring net (31). The cleaning ring (42) is threadedly connected to the outer wall of the reciprocating screw (41). The cleaning ring (42) slides on the outer ring wall of the filter ring net (31) along the axis of the reciprocating screw (41), and the inner ring wall of the cleaning ring (42) presses against the outer ring wall of the filter ring net (31) and scrapes impurities on the outer ring wall of the filter ring net (31).

10. The drill bit for clearing and cleaning a pipeline according to claim 9, characterized in that: The circulation assembly (4) further comprises a circulation impeller (43), which is coaxially connected to the end surface of the reciprocating screw (41) close to the driving piston (32). Water in the first water outlet (111) passes through the filtering ring net (31) and impacts the blades of the circulation impeller (43), thereby driving the circulation impeller (43) to rotate.

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