Resistance increasing and pressure regulating device for mine filling material pumping pipeline

Abstract

The utility model provides a mine filling material pumping pipeline resistance-increasing pressure-regulating device which comprises a pumping pipe, a spiral conveying plate and a driving assembly, the pumping pipe comprises a feeding pipe, a discharging pipe and a horizontal conveying pipe, the left end of the horizontal conveying pipe is provided with a connecting shaft, the right end of the horizontal conveying pipe is connected with the discharging pipe, and the feeding pipe is connected to the upper side of the left end of the horizontal conveying pipe. The spiral conveying plate is arranged in the horizontal conveying pipe, one end of the spiral conveying plate is connected with the driving assembly through a connecting shaft, the other end of the spiral conveying plate is vacant, the driving assembly comprises a variable frequency motor and an electromagnetic brake, the input end of the variable frequency motor is sequentially connected with a reversing switch and a variable frequency controller, and the output end of the variable frequency motor is connected with the planetary reducer through a coupler. The output end of the planetary reducer is connected with the connecting shaft, and a brake disc of the electromagnetic brake is installed on the connecting shaft. According to the filling material pumping pipeline resistance increasing and pressure regulating device, the spiral conveying plate is controlled to rotate through the combination of the electromagnetic brake and the variable frequency motor, braking resistance is generated in the speed direction of filling materials, and resistance increasing and pressure regulating of the filling materials are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mine filling, in particular to a resistance increasing and pressure regulating device for a mine filling material pumping pipeline. Background Art

[0002] During the mining operation, goafs will appear below the surface. Personnel and machinery may fall into the goafs and be injured, which makes the production of mines face great safety problems. In order to eliminate the damage to the geological environment of mines, prevent surface collapse, and reduce pollution sources, filling goafs with filling materials has become an effective and practical method. The purpose of filling is to support the rocks on both sides of the goaf and create a foothold for continuing the stratified mining above. China has used the support filling mining method in the late Western Zhou Dynasty, and until the 1950s, dry filling mining was widely used. In the 1960s, dry filling mining was gradually replaced by other high-efficiency mining methods. In the 1970s, tailings filling and cementing filling technology were gradually used. As well as self-propelled trackless mining equipment, water sand filling mining and cementing filling mining were vigorously developed, so that the proportion of ore output of filling mining method gradually increased. The development trend of filling mining method is to increase the layer height, develop segmented filling and stage filling, simplify the filling process, and improve the strength of cementing filling body. Use pipelines to hydraulically transport high-concentration filling materials. At present, mine filling pipeline technology has been widely used in mine filling, mainly using piston-type industrial pumps as power to fill filling materials into the mine. In the process of filling slurry materials, it is often easy to make the pressure of the conveying pipeline too high. If the pressure is not reduced in time, it is easy to cause the filling pipe to burst. Chinese utility model CN ​​215489122 U discloses a rapid decompression device for a filling slurry conveying pipeline, including an L-shaped conveying pipe, the lower end of the L-shaped conveying pipe is connected to a pressure dividing pipe, and three groups of pipeline perforations are respectively opened on the left front and back and the upper part of the pressure dividing pipe, and a valve seat is fixedly connected to the outer wall of the L-shaped conveying pipe, and three groups of pressure reducing holes are respectively opened on the outer wall of the L-shaped conveying pipe. Three groups of L-shaped connecting holes connected to the three groups of pressure reducing holes are respectively opened inside the front and back and the right side of the valve seat, and the lower ends of the three groups of L-shaped connecting holes are connected to the three groups of pipeline perforations on the left side of the pressure dividing pipe through three groups of L-shaped pressure reducing pipes, and three groups of torque valve assemblies are arranged on the valve seat. The above-mentioned device reduces pressure through an L-shaped pressure reducing pipe, but its filler slurry is in a free fall zone before passing through the L-shaped conveying pipe, and is directly transferred to the bending zone of the L-shaped conveying pipe, and then reduced pressure is carried out through the L-shaped pressure reducing pipe. Therefore, the impact pressure in front of the conveying pipe is not well relieved, and there is a certain risk of pipe burst. Summary of the invention

[0003] The technical problem solved by the utility model is that during the process of filling slurry in a mine, the pressure of the conveying pipeline is too large, which easily causes the filling pipe to burst.

[0004] The utility model provides a resistance-increasing and pressure-regulating device for a mine filling material pumping pipeline, comprising a pumping pipe, a spiral conveying plate, and a driving component. The pumping pipe comprises a feed pipe, a discharge pipe, and a horizontal conveying pipe. The horizontal conveying pipe is a uniformly variable diameter pipe body. The diameter of the pipe opening at the left end of the horizontal conveying pipe is larger than the diameter of the pipe opening at the right end. The left end of the horizontal conveying pipe is provided with a connecting shaft through a sealing bearing, and the right end is connected to the discharge pipe. The feed pipe is connected to the upper side of the left end of the horizontal conveying pipe, and the feed pipe and the discharge pipe are both opened upward. The spiral conveying plate is a shaftless spiral blade. The spiral conveying plate is horizontally arranged in the horizontal conveying pipe. One end of the spiral conveying plate is connected to the driving component through the connecting shaft, and the other end is vacant. The driving component comprises a variable frequency motor and an electromagnetic brake. The input end of the variable frequency motor is connected to a forward and reverse switch and a variable frequency controller in sequence. The output end of the variable frequency motor is connected to a planetary reducer through a coupling. The output end of the planetary reducer is connected to the connecting shaft, and the brake disc of the electromagnetic brake is installed on the connecting shaft.

[0005] Furthermore, the spiral conveying plate is an integrally formed counter-current rotating concave structure.

[0006] Furthermore, the length of the spiral conveying plate is adapted to the length of the horizontal conveying pipe.

[0007] Furthermore, when the slurry in the pumping pipe does not need to increase resistance, the spiral conveying plate rotates forward to push the slurry forward and at the same time plays a role in stirring the slurry.

[0008] Furthermore, when the slurry in the pumping pipe requires a smaller resistance, the electromagnetic brake applies resistance to the spiral conveying plate, and the slurry pushes the spiral conveying plate to rotate and move forward, thereby playing a role in increasing resistance.

[0009] Furthermore, when the slurry in the pumping pipe requires stronger resistance, the spiral conveying plate is reversed, and the slurry needs to pass through the gap of the spiral conveying plate, thereby exerting a strong resistance-increasing effect on the slurry.

[0010] The utility model has the following beneficial effects: the utility model mine filling material pumping pipeline resistance increasing and pressure regulating device controls the rotation of the spiral conveying plate through the combination of electromagnetic brake and variable frequency motor, generates braking resistance along the filling material speed direction, the greater the speed, the stronger the braking force, realizes the resistance increasing and pressure regulating of the filling material, and avoids the filling pipe from bursting. The utility model has a wide range of applications, simple structural principle, low failure rate, and can disassemble and replace wearing parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 , Schematic diagram of the utility model of the resistance increasing and pressure regulating device for the mine filling material pumping pipeline. DETAILED DESCRIPTION

[0012] In order to clearly illustrate the technical features of this solution, the solution is described below through specific implementation methods and in combination with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the utility model.

[0013] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0014] like Figure 1 As shown, a device for increasing resistance and regulating pressure of a mine filling material pumping pipeline comprises a pumping pipe, a spiral conveying plate 4, and a driving assembly.

[0015] The pumping pipe includes a feed pipe 2, a discharge pipe 3, and a horizontal conveying pipe 1. The horizontal conveying pipe 1 is a uniformly variable diameter pipe body, which makes the flow velocity of the filling material itself change gradually. The rotating braking pressure range of the spiral conveying plate 4 is large, which can effectively increase the water resistance. The diameter of the left end of the horizontal conveying pipe 1 is larger than that of the right end. The left end of the horizontal conveying pipe 1 is provided with a connecting shaft 10 through a sealed bearing 11, and the right end is connected to the discharge pipe 3. The feed pipe 2 is connected to the upper side of the left end of the horizontal conveying pipe 1. The feed pipe 2 and the discharge pipe 3 are both opened upward. The device is installed below the horizontal height of the filling material conveying pipeline, so that the filling material is in a full pipe state when flowing through the device. When the speed of the spiral conveying plate 4 is constant, a constant supply pressure can be maintained.

[0016] The spiral conveying plate 4 is a shaftless spiral blade. The spiral conveying plate 4 is horizontally arranged in the horizontal conveying pipe 1. One end of the spiral conveying plate 4 is connected to the driving component through the connecting shaft 10, and the other end is idle. The spiral conveying plate 4 is an integrally formed countercurrent rotating concave structure, and the length of the spiral conveying plate 4 is adapted to the length of the horizontal conveying pipe 1.

[0017] The driving assembly includes a variable frequency motor 5 and an electromagnetic brake 6. The input end of the variable frequency motor 5 is connected to a forward / reverse switch 7 and a frequency conversion controller 8 in sequence. The variable frequency motor 5 is controlled by the forward / reverse switch 7. The forward / reverse switch 7 is connected to the frequency conversion controller 8 to control the speed and torque of the variable frequency motor 5. The output end of the variable frequency motor 5 is connected to a planetary reducer 9 through a coupling. The output end of the planetary reducer 9 is connected to a connecting shaft 10. The brake disc of the electromagnetic brake 6 is installed on the connecting shaft 10. By adjusting the eddy current intensity in the armature, a fixed braking torque is formed on the brake disc to keep the spiral conveyor plate 4 at a constant resistance.

[0018] When the device is in operation, the filling material fills the pumping pipe. When the slurry in the pumping pipe does not need to increase resistance, the spiral conveying plate 4 rotates forward to push the slurry forward and stir the slurry at the same time. When the slurry in the pumping pipe needs a smaller resistance, the electromagnetic brake 6 applies resistance to the spiral conveying plate 4, and the slurry pushes the spiral conveying plate 4 to rotate and move forward, thereby increasing resistance. When the slurry in the pumping pipe needs a stronger resistance, the spiral conveying plate 4 reverses, and the slurry needs to pass through the gap of the spiral conveying plate 4, thereby strongly increasing the resistance of the slurry.

[0019] During the flushing process of the pumping pipe, the device can make the spiral conveying plate 4 rotate forward through the forward-reverse switch 7 to complete the self-cleaning of the device.

[0020] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0021] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A device for increasing resistance and regulating pressure in a mine filling material pumping pipeline, characterized in that: Including pumping pipe, screw conveying plate, drive assembly, The pumping pipe comprises a feed pipe, a discharge pipe and a horizontal conveying pipe. The horizontal conveying pipe is a uniformly variable diameter pipe body. The diameter of the left end of the horizontal conveying pipe is larger than that of the right end. The left end of the horizontal conveying pipe is provided with a connecting shaft through a sealing bearing, and the right end is connected to the discharge pipe. The feed pipe is connected to the upper side of the left end of the horizontal conveying pipe. The feed pipe and the discharge pipe are both opened upward. The spiral conveying plate is a shaftless spiral blade, and the spiral conveying plate is horizontally arranged in the horizontal conveying pipe. One end of the spiral conveying plate is connected to the driving component through a connecting shaft, and the other end is empty. The drive assembly includes a variable frequency motor and an electromagnetic brake. The input end of the variable frequency motor is connected to a forward / reverse switch and a variable frequency controller in sequence. The output end of the variable frequency motor is connected to a planetary reducer through a coupling. The output end of the planetary reducer is connected to a connecting shaft. The brake disc of the electromagnetic brake is installed on the connecting shaft.

2. The device for increasing resistance and regulating pressure in a mine filling material pumping pipeline according to claim 1, characterized in that: The spiral conveying plate is an integrally formed counter-current rotating concave structure.

3. The device for increasing resistance and regulating pressure in a mine filling material pumping pipeline according to claim 1, characterized in that: The length of the spiral conveying plate is adapted to the length of the horizontal conveying pipe.

4. The device for increasing resistance and regulating pressure in a mine filling material pumping pipeline according to claim 1, characterized in that: When the slurry in the pumping pipe does not need to increase resistance, the spiral conveying plate rotates forward to push the slurry forward and at the same time plays a role in stirring the slurry.

5. The device for increasing resistance and regulating pressure in a mine filling material pumping pipeline according to claim 1, characterized in that: When the slurry in the pumping pipe requires a smaller resistance, the electromagnetic brake applies resistance to the spiral conveying plate, and the slurry pushes the spiral conveying plate to rotate and move forward, thereby playing a role in increasing resistance.

6. The device for increasing resistance and regulating pressure in a mine filling material pumping pipeline according to claim 1, characterized in that: When the slurry in the pumping pipe requires stronger resistance, the spiral conveying plate is reversed, and the slurry needs to pass through the gap of the spiral conveying plate, thereby exerting a strong resistance-increasing effect on the slurry.

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