A filling pipe cleaning device and a working method

Abstract

The application relates to a filling pipeline cleaning device and a working method, which comprises a vertical connecting shaft, wherein the connecting shaft is sequentially provided with an upper edge power assembly, an upper fan blade cleaning assembly, a middle power assembly, a lower fan blade cleaning assembly and a lower edge power assembly from top to bottom; the upper edge power assembly and the lower edge power assembly each comprise a small shell, two groups of filter screens are arranged in the small shell in a top-bottom interval mode, an air inlet hole is formed in the lower end of the small shell, and an air outlet hole is formed in the upper end of the small shell; the upper fan blade cleaning assembly and the lower fan blade cleaning assembly are consistent in structure and each comprise a main body fixedly connected with the connecting shaft and fan blades symmetrically arranged on the main body, and cleaning rubber strips for cleaning the inner wall of the pipeline are fixedly arranged on the outer edges of the fan blades; the middle power assembly comprises a large shell, two groups of large filter screens are arranged in the large shell in a top-bottom interval mode, a large air inlet hole is formed in the lower end of the large shell, and a large air outlet hole is formed in the upper end of the large shell, and the filling pipeline cleaning device is simple in structure and significantly improves the cleaning effect.

Description

Technical Field

[0001] The invention relates to a filling pipeline cleaning device and a working method. Background Art

[0002] Filling pipe cleaning is an important step in the mining production process. It can effectively clean the slurry residue on the pipe, thereby effectively preventing the occurrence of pipe blockage accidents.

[0003] In the application of mine filling technology, in order to prevent the retention or adhesion of residues in the pipeline and ensure the smooth flow of slurry in the pipeline, the following four pipeline cleaning methods are often used: ① Cleaning with sponge balls or rubber columns; ② Cleaning with compressed air and a small amount of water; ③ Using non-cementing paste to remove cementing paste in the pipeline; ④ Using a hydraulic variable-diameter piston to remove cementing paste.

[0004] Taking into account various factors, the above four methods still struggle to achieve effective pipe cleaning results. Method 1: The sponge balls and rubber columns used in method 1 lack self-propulsion when cleaning pipes over 1,000 meters long, causing them to become lodged in the pipe and cause blockage. Method 2: Due to the long and undulating nature of the pipe, residue is unevenly distributed along the pipe, especially in the lower bends, where more debris remains. When compressed air is turned on, only a small amount of residue is expelled with the water and air. Method 4: Applicable only to small pipes or when a pipe is blocked.

[0005] However, most mines still use a full-pipe gravity flushing method. This involves completely filling the filling pipe with water after the slurry is essentially delivered. This creates a full-pipe gravity flow, allowing the natural pressure differential to remove any residue from the pipe. This simple and effective method prevents pipe blockage, but each time the slurry is essentially delivered, the machine must be shut down for a full-pipe gravity flush. This means that the accumulated water volume can reach a significant level, affecting the slurry concentration, reducing the filling effect, and increasing the amount of water discharged from the mine.

[0006] Currently, the commonly used methods for cleaning underground backfill pipes suffer from problems such as poor cleaning continuity, insufficient cleaning intensity, and dilution of the filling slurry. These methods can only temporarily alleviate the cleaning issues of shorter or localized pipes, but cannot fundamentally solve the cleaning problem of long underground backfill pipes. Currently, research on underground backfill pipe cleaning, both domestically and internationally, remains limited to localized, short-range cleaning, while systematic cleaning of long pipes has yet to be studied and applied. Summary of the Invention

[0007] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a filling pipe cleaning device and a working method, which are not only structurally reasonable but also convenient and efficient.

[0008] In order to solve the above technical problems, the technical solution of the present invention is: a filling pipe cleaning device, comprising a vertically arranged connecting shaft, the connecting shaft is provided with an upper edge power assembly, an upper fan blade cleaning assembly, an intermediate power assembly, a lower fan blade cleaning assembly and a lower edge power assembly in sequence from top to bottom, the upper edge power assembly and the lower edge power assembly have the same structure, both include a small shell, two groups of filter screens are arranged at upper and lower intervals in the small shell, the lower end of the small shell is provided with an air inlet hole, and the upper end is provided with an air outlet hole; the upper fan blade cleaning assembly and the lower fan blade cleaning assembly have the same structure, both are composed of a main body fixedly connected to the connecting shaft and fan blades symmetrically arranged on the main body, the outer edges of the fan blades are fixed with cleaning strips for cleaning the inner wall of the pipe; the intermediate power assembly includes a large shell, two groups of large filter screens are arranged at upper and lower intervals in the large shell, the lower end of the large shell is provided with a large air inlet hole, and the upper end is provided with a large air outlet hole.

[0009] Furthermore, a positioning remote sensing controller is provided in both the large shell and the small shell.

[0010] Furthermore, a spherical sponge ball is provided outside the small shell, and the air inlet and the air outlet both pass through the sponge ball.

[0011] Furthermore, one end of the large filter located at the bottom is hinged to the inner wall of the large shell through a hinge shaft, and a limiting column is set at the other end near the large air inlet side. The large filter located at the top and the large filter located at the bottom are arranged symmetrically with each other. The principle is that one end of the hinge is set with a limiting column near the air outlet side, and the two large filter limit swing directions are opposite.

[0012] Furthermore, the large shell is cylindrical, and a rubber sleeve is coaxially sleeved on its outer periphery.

[0013] Furthermore, the pipeline consists of a vertical filling drilling pipeline and a horizontal filling pipeline laid in an underground tunnel. A high-pressure pump for sending a filling pipeline cleaning device is provided at the top of the vertical filling drilling pipeline.

[0014] Furthermore, the coupling is rotatably connected to the large housing and is connected to the generator inside the housing. A chamber for installing the generator is provided inside the large housing.

[0015] Furthermore, a power pump may be provided in both the large shell and the small shell to cooperate with the air inlet and outlet holes to complete the suction and air injection.

[0016] A working method of a filling pipe cleaning device is provided, comprising the following steps: first, the device is pumped into a vertical filling borehole pipe via a high-pressure pump, whereupon sponge balls and rubber cleaning columns immediately begin cleaning, while fan blades begin rotating under the action of the downward turbulent airflow. On the one hand, the cleaning sponge balls or rubber cleaning strips at the tail end of the fan blades begin to spirally clean the pipe wall, further removing residue from the pipe wall. On the other hand, the rotation of the fan blades generates a certain resistance, partially buffering the high speed of the self-extracted air-powered cleaner under the action of high pressure and gravity. When the device completes cleaning the vertical filling borehole pipe, it enters the filling pipe laid in a horizontal underground tunnel. A large amount of gas is drawn into the air inlet and large air inlet in the direction of the cleaner's forward movement, while the air outlet and large air outlet in the opposite direction of the cleaner's forward movement eject gas backward, using the recoil force of the gas to propel the cleaner forward. Particles are collected into the large and small shells by opening and closing the filter screen and the large filter screen. The real-time position of the cleaning device is monitored remotely. When the cleaning device is at the end of the pipe, gas is blown in the opposite direction to decelerate the movement while being ejected in the direction of travel, incidentally ejecting the cleaned debris out of the pipe, completing the cleaning process.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) Based on the basic physical principles and processes of underground filling pipes, the sponge ball is combined with the fan blade and cleaning strip to improve the cleaning effect per unit area.

[0019] (2) It completely solves the problem of pipe blockage caused by insufficient power of sponge cleaning balls when cleaning long pipes.

[0020] (3) The energy of the fan blade rotation is fully utilized, the cleaning time of the underground filling pipe is reasonably controlled, and the cleaning effect is effectively improved.

[0021] (4) The problem of using a large amount of water to clean the traditional underground charging pipeline, which reduces the concentration of filling slurry in the goaf, is completely solved, achieving higher economic benefits in the long run.

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of an embodiment of the present invention;

[0024] Figure 2 Schematic diagram of the usage status of an embodiment of the present invention.

[0025] In the figure: A-filling pipe cleaning device 1-coupling shaft, 2-upper edge power assembly, 3-upper fan blade cleaning assembly, 4-middle power assembly, 5-lower fan blade cleaning assembly, 6-lower fan blade cleaning assembly, 7-small shell, 8-filter, 9-air inlet, 10-air outlet, 11-main body, 12-blade, 13-cleaning rubber strip, 14-large shell, 15-large filter, 16-large air inlet, 17-large air outlet, 18-positioning remote sensing controller, 19-sponge ball, 20-hinge shaft, 21-limiting column, 22-rubber sleeve, 23-vertical filling drilling pipe, 24-filling pipe laid in the underground tunnel, 25-high-pressure pump, 26-generator, 27-chamber. DETAILED DESCRIPTION

[0026] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below with reference to the accompanying drawings for detailed description.

[0027] like Figures 1 and 2 As shown, a filling pipe cleaning device comprises a vertically arranged connecting shaft 1, on which an upper edge power assembly 2, an upper blade cleaning assembly 3, an intermediate power assembly 4, a lower blade cleaning assembly 5 and a lower edge power assembly 6 are sequentially arranged from top to bottom. The upper edge power assembly and the lower edge power assembly have the same structure and both comprise a small shell 7. Two groups of filter screens 8 are arranged in the upper and lower intervals in the small shell. The lower end of the small shell is provided with an air inlet 9 and the upper end is provided with an air outlet 10. The upper blade cleaning assembly and the lower blade cleaning assembly are connected. The components have the same structure, and are composed of a main body 11 fixedly connected to the connecting shaft and fan blades 12 symmetrically arranged on the main body. The outer edges of the fan blades are fixed with cleaning strips 13 for cleaning the inner wall of the pipe; the intermediate power component includes a large shell 14, and two groups of large filters 15 are arranged in the upper and lower parts of the large shell. The lower end of the large shell is provided with a large air inlet hole 16, and the upper end is provided with a large air outlet hole 17. The rotation of the fan blades during the falling process and the setting angle of the fan blades are universal settings and will not be elaborated here.

[0028] In the embodiment of the present invention, a positioning remote sensing controller 18 is provided in both the large housing and the small housing.

[0029] In the embodiment of the present invention, a spherical sponge ball 19 is provided outside the small shell, and the air inlet and the air outlet both pass through the sponge ball.

[0030] In an embodiment of the present invention, a power pump may be provided in both the large shell and the small shell to cooperate with the air inlet and outlet holes to complete the air suction and air ejection.

[0031] In an embodiment of the present invention, the coupling is rotatably connected to the large housing and is connected to a generator 26 within the housing. As the device rapidly descends under the action of the high-pressure pump, its height decreases, its potential energy decreases, and its kinetic energy increases, driving the blades to rotate. The rotation of the blades drives the coupling, which in turn drives the generator, converting the potential energy into kinetic energy supplied to the generator, achieving energy conversion and storage. This stored energy can be used as a source of power to supply the positioning remote sensing controller and drive the suction gas. The generator and power storage are both universal devices and will not be described in detail here. A chamber 27 for mounting the generator and power storage is provided within the large housing.

[0032] In this embodiment of the present invention, one end of the large filter at the bottom is hinged to the inner wall of the large housing via a hinge shaft 20, and the other end is provided with a limit post 21 near the large air inlet. The large filter at the top and the large filter at the bottom are arranged symmetrically, and the hinged end is provided with a limit post near the air outlet. The two large filters have opposite limit swing directions, and the arrangement of the filter is the same as that of the large filter. Both large filters are provided with a clearance groove to prevent interference with the connecting shaft.

[0033] In the embodiment of the present invention, the large housing is cylindrical, and a rubber sleeve 22 is coaxially sleeved on the outer periphery thereof.

[0034] In the embodiment of the present invention, the pipeline is composed of a vertical filling drilling pipeline 23 and a horizontal filling pipeline 24 laid in the underground tunnel. A high-pressure pump 25 is provided at the top of the vertical filling drilling pipeline for sending in the filling pipeline cleaning device.

[0035] A working method of a filling pipe cleaning device is carried out in the following steps: first, the diameter of the underground filling pipe to be cleaned is determined, so as to select a self-exhaust pipe cleaning device of appropriate size, so that the elastic expansion and contraction range of the rubber column and the sponge ball falls within the optimal range.

[0036] Wet the sponge ball at the end (upper end) of the self-exhaust pipe cleaner, first "dry sweep" the front end, and then "wet mop" the back end to achieve the effect of secondary effective cleaning.

[0037] Determine the vertical height of the filling borehole from the ground to the well, thereby calculating the potential energy, and calculate the pipeline resistance based on the material properties of the vertical pipeline, and accordingly select the filling pipeline cleaning device with appropriate power;

[0038] Determine the horizontal length of the downhole filling pipeline and combine it with the vertical drilling height to select the pump pressure value and pumping time of the high-pressure pump.

[0039] When the cleaning of the underground filling pipe begins, the self-exhaust power cleaning device A is sent into the pipe with a high-pressure pump. Under the action of high pressure and gravity, it enters the first stage of cleaning. The sponge ball and rubber cleaning column start cleaning immediately, and the fan blade cleaning piece starts to rotate under the action of the falling rapid airflow. On the one hand, the energy generated by the rotation is stored in the power system through the connecting shaft; on the other hand, the cleaning sponge ball or cleaning rubber strip at the tail end of the fan blade begins to spirally clean the pipe wall to further clean the residue on the pipe wall; in addition, the rotation of the fan blade will produce a certain resistance, which can buffer part of the high speed of the self-exhaust power cleaner under the action of high pressure and gravity, further ensuring the cleaning time and improving the cleaning efficiency.

[0040] As the self-pumping power cleaning device enters the underground horizontal tunnel filling pipe from the filling vertical drill hole and runs a certain distance under the action of inertia within the pipe, the power of the high-pressure pump, gravity, and speed inertia weakens and is about to be insufficient to support the forward movement of the cleaning pipe. That is, when the remote sensing monitoring detects that the speed of the self-pumping power cleaning device has dropped to a certain value, it enters the second stage of cleaning. The self-pumping power system starts, sucking a large amount of gas into the air inlet and large air inlet in the direction of the cleaning device's forward movement, and the air outlet in the opposite direction of the cleaning device's forward movement ejects air backward. On the one hand, the recoil force of the gas propels the cleaning device forward, and on the other hand, this action creates a local air pressure difference between the front and rear, which contributes positive work to the forward movement of the cleaning device. In addition, the power system has two layers of filters, which automatically open the filter or large filter near the forward direction and close the filter or large filter far from the forward direction, so that particles entering through the air holes are collected in the system cavity. During the suction, due to the large work, some pipe attachments are also sucked in, similar to a "vacuum cleaner." At the same time, the fan blade cleaning piece is pulled by the same direction of rapid airflow and will rotate. During the spiral cleaning, the kinetic energy can be converted into electrical energy through the mechanical main shaft and stored in the power system to provide energy for the suction and air jet, thereby accelerating the forward cleaning cycle and highlighting the sustainable advantages of this system.

[0041] By remotely monitoring the real-time position of the cleaning device, the power pump reverses its drive when it reaches the end of the filling pipe, slowing the cleaning device down and braking. Once the cleaning device reaches the tail pipe sliding casing, it stops, ejecting all gas from the cleaning device and clearing the debris from the pipe. The cleaning device stops at a distance of no more than 1.5 meters from the end of the filling pipe outlet, where the pipe bends downward. The pipe is opened at the tail pipe sliding filling pipe, and the self-extraction pipe cleaning device is recovered, completing the downhole filling pipe cleaning process.

[0042] The cleaning device of this device in the vertical borehole uses the high-pressure gas of the high-pressure pump and the potential energy generated during the vertical drop to clean the vertical filling pipe, and the accumulated energy activates the power system in the cleaning device; when the cleaning device falls to the horizontal filling pipe part underground, the cleaning device uses the accumulated kinetic energy in front and uses its own power system to start cleaning the horizontal filling pipe. When the cleaning device reaches a certain distance from the last part, the power system of the cleaning device gradually slows down. When it reaches the end of the last section of the pipe, the power system stops working, and all the gas in the pipe is quickly sprayed forward, blowing the debris in front into the goaf. On the one hand, the vertical height difference from the filling borehole to the underground is used to calculate the potential energy, and then the potential energy is converted into mechanical energy, so that the cleaning device can work automatically. On the other hand, the closed nature of the filling pipe is used to flush high-pressure gas into the pipe. The cleaning device uses this part of high-pressure gas to achieve early cleaning of the pipe.

[0043] The present invention is not limited to the above-mentioned preferred embodiment. Anyone can derive other forms of filling pipe cleaning devices and working methods based on the inspiration of the present invention. All equivalent changes and modifications made within the scope of the present invention should fall within the scope of the present invention.

Claims

1. A filling pipe cleaning device, characterized in that: The fan blade cleaning assembly comprises a vertically arranged connecting shaft, on which an upper edge power assembly, an upper fan blade cleaning assembly, an intermediate power assembly, a lower fan blade cleaning assembly and a lower edge power assembly are sequentially arranged from top to bottom. The upper edge power assembly and the lower edge power assembly have the same structure and both comprise a small shell, in which two groups of filter screens are arranged at intervals from top to bottom, and an air inlet hole is provided at the lower end of the small shell, and an air outlet hole is provided at the upper end; the upper fan blade cleaning assembly has the same structure as the lower fan blade cleaning assembly, both comprise a main body fixedly connected to the connecting shaft and fan blades centrally symmetrically arranged on the main body, and the outer edges of the fan blades are fixed with cleaning rubber strips for cleaning the inner wall of the pipe; the intermediate power assembly comprises a large shell, in which two groups of large filter screens are arranged at intervals from top to bottom, and the large shell has a large air inlet hole at the lower end and a large air outlet hole at the upper end; Positioning remote sensing controllers are provided in both the large shell and the small shell; The pipeline consists of a vertical filling drilling pipeline and a horizontal filling pipeline laid in the underground tunnel. The top of the vertical filling drilling pipeline is provided with a high-pressure pump for feeding the filling pipeline cleaning device; The large shell and the small shell are both provided with power pumps to cooperate with the air inlet and outlet holes to complete the suction and air injection.

2. A filling pipe cleaning device according to claim 1, characterized in that: The small shells are all sleeved with spherical sponge balls, and the air inlet and outlet holes are both penetrated by the sponge balls.

3. The filling pipe cleaning device according to claim 1, characterized in that: One end of the large filter at the bottom is hinged to the inner wall of the large shell through a hinge shaft, and a limit column is set at the other end near the large air inlet side. The large filter at the top and the large filter at the bottom are arranged symmetrically with each other. The principle is that one end of the hinge is set with a limit column near the air outlet side, and the two large filter limit swing directions are opposite.

4. The filling pipe cleaning device according to claim 1, characterized in that: The large shell is cylindrical, and a rubber sleeve is coaxially sleeved on its outer periphery.

5. The filling pipe cleaning device according to claim 1, characterized in that: The coupling is rotatably connected to the large shell and is connected to a generator inside the shell. A chamber for installing the generator is provided inside the large shell.

6. A working method of a filling pipeline cleaning device, characterized in that: A filling pipe cleaning device as described in any one of claims 1 to 5 is used, and the following steps are followed: first, the device is sent into the vertical filling borehole pipe through a high-pressure pump, and the sponge ball and rubber cleaning column start cleaning immediately, and the fan blades start rotating under the action of the falling rapid airflow. On the one hand, the cleaning sponge ball or cleaning rubber strip at the tail end of the fan blade starts to spirally clean the pipe wall, further cleaning the residue on the pipe wall. On the other hand, the rotation of the fan blade generates a certain resistance, which buffers part of the high speed of the self-exhaust power cleaner under the action of high pressure and gravity; when the device completes the vertical The straight filling drilling pipe cleaning enters the filling pipe laid in the horizontal underground tunnel, and sucks a large amount of gas into the air inlet and large air inlet in the direction of the cleaner's forward movement. The air outlet and large air outlet in the opposite direction of the cleaner's forward movement eject gas backwards, using the recoil force of the gas to push the cleaner forward, and collect particles into the large shell and the small shell through the opening and closing of the filter and the large filter; the real-time position of the cleaning device is monitored by remote sensing. When it is at the end of the pipeline, the gas is blown in the reverse direction to achieve deceleration and the gas is ejected in the direction of travel, and the cleaned debris is ejected out of the pipeline to complete the cleaning.

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