A filling vertical pipe speed reduction and resistance increase system

Abstract

The present invention discloses a filling vertical pipe speed reduction and resistance increase system, comprising multiple vertical pipes, which are all vertically arranged and distributed in sequence along the up and down directions. The ends of any two adjacent vertical pipes that are close to each other are respectively connected and communicated through a damper. Materials are transported from top to bottom through the multiple vertical pipes and are decelerated by the damper. In this way, the materials fall freely in each vertical pipe under the action of gravity, and their speed is continuously accelerated until they move downward and pass through the damper, at which time they are decelerated by the damper. The decelerated materials continue to accelerate downward under the action of gravity, and are decelerated when they meet the damper again. This reciprocating process is performed, so that the moving speed of the materials in the multiple vertical pipes is not too high, so that the wear of the materials on the vertical pipes is reduced, and the wear of the multiple vertical pipes is relatively balanced. If there are multiple dampers, the wear of the multiple dampers is also relatively balanced, so that the service life of the multiple vertical pipes is relatively balanced.

Description

Technical Field

[0001] The invention relates to the technical field of mine filling and mining, and in particular to a filling vertical pipe speed reduction and resistance increase system. Background Art

[0002] In the field of mine filling engineering, especially for the filling of low-magnification deep shaft mining areas, the filling slurry is generally prepared by building a filling station on the ground, and then transported to the empty area to be filled by gravity through the filling pipelines laid in the filling shaft and the mining tunnel. Since the filling slurry is composed of abrasive tailings, rod grinding sand and crushed waste rock, it will cause abrasion to the filling pipeline during the transportation process and cause failure, especially in the vertical pipeline from the ground to the filling mining area, the filling slurry will cause high-speed impact abrasion to the pipeline due to free fall movement, causing the pipeline to rupture. Due to the difficulty of filling shaft construction and pipeline laying, long construction period and high project cost, how to extend the life of the filling vertical pipe has become a major technical problem that people urgently need to solve. With the continuous expansion of mining resources, the deep well filling that must be used for the mining of deep metal mines makes this technical problem more serious. To solve this problem, the industry has adopted a variety of different pressure reduction, drag increase and wear reduction measures, such as sand storage tank pressure reduction system, pipeline return pressure reduction and proportional flow control valve pressure reduction, orifice throttling tube, safety diaphragm pressure reduction, and buffer box elbow pressure reduction, in order to extend the life cycle of the filling pipeline. However, due to various conditions, there is no universal method to effectively solve the above technical problems so far, and the pressure reduction and drag increase effect is also uncontrollable. Summary of the invention

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a filling vertical pipe speed reduction and resistance increase system with a long service life and uniform wear at all locations.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a filling vertical pipe speed reduction and resistance increase system, comprising a plurality of vertical pipes, wherein the plurality of vertical pipes are vertically arranged and distributed in sequence along the up and down directions, and the ends of any two adjacent vertical pipes that are close to each other are respectively connected and communicated through a damper, and the material is transported from top to bottom through the plurality of vertical pipes and is decelerated by the damper.

[0005] The beneficial effect of the above technical solution is that the material falls freely in each vertical pipe under the action of gravity, and its speed continues to increase until it moves downward and passes through the damper, and is decelerated by the damper. The decelerated material continues to accelerate downward under the action of gravity, and is decelerated when it encounters the damper again, and so on, so that the speed of the material moving in the multiple vertical pipes will not be too high, so that the material wears the vertical pipe less, and the wear of the multiple vertical pipes is relatively balanced. If there are multiple dampers, the wear of the multiple dampers is also relatively balanced, so that the service life of the multiple vertical pipes is relatively balanced, and the life span is relatively consistent.

[0006] The above technical solution also includes an "L"-shaped filling tube, which has a vertical section and a horizontal section. The upper end of the vertical section of the filling tube is connected to the lower end of the vertical tube located at the bottom and is connected or integrally formed.

[0007] The beneficial effect of the above technical solution is that its structure is simple, so that the slurry passes through a horizontal section for transition before being discharged, so that its output speed is relatively uniform.

[0008] The above technical solution also includes a receiving hopper, which is trumpet-shaped, with its larger opening end facing upward and its smaller opening end facing downward, and its smaller opening end is connected and communicated with the upper end of the vertical pipe located at the top.

[0009] The beneficial effect of the above technical solution is that the material is transported downward as much as possible by gravity as the driving force.

[0010] The above technical solution also includes an incoming material pipe, the discharge end of which extends into the receiving hopper through the larger opening end of the receiving hopper to transport materials into the receiving hopper, and the feed end of the incoming material pipe is used to communicate with the discharge end of the feeding device.

[0011] The beneficial effect of the above technical solution is that the material supplied by the feeding device is guided to the receiving hopper by the incoming material pipe.

[0012] The above technical solution also includes a controller, a flow sensor, a pressure sensor and a flow control valve. The flow sensor is installed on the incoming pipe, and the pressure sensor and the flow control valve are respectively installed at the horizontal section of the filling pipe. The flow sensor, pressure sensor and flow control valve are all electrically connected to the controller.

[0013] The beneficial effect of the above technical solution is that: in this way, the flow rate of the material in the incoming pipe and the pressure of the filling pipe can be conveniently known, and at the same time, a flow control valve can be used to adjust the flow rate of the material discharged from the filling pipe.

[0014] The damper in the above technical solution includes a shell and a damping block. The shell is hollow inside, and its upper end has a feed port connected to the interior thereof, and its lower end has a discharge port connected to the interior thereof. The damping block is placed in the shell and is located between the feed port and the discharge port, and there is a gap between the damping block and the inner wall of the shell that connects the feed port and the discharge port. The material enters the shell at high speed through the feed port of the damper, hits the damping block to be decelerated, and is discharged downward to the discharge port through the gap after deceleration.

[0015] The beneficial effect of the above technical solution is that: its structure is simple, so that the material is decelerated once after moving downward into the shell and hitting the damping block.

[0016] In the above technical solution, the feed port is located in the middle of the upper end of the shell, and the edges of the damping blocks all protrude from the edges of the feed port.

[0017] The beneficial effect of the above technical solution is that the materials can fully hit the damping block after entering the shell, so that the materials entering the shell can be decelerated once.

[0018] In the above technical solution, a plurality of support blocks are arranged in the shell, and the plurality of support blocks are distributed in a ring-shaped manner at intervals, and the damping block is placed on the plurality of support blocks or fixedly installed on the plurality of support blocks.

[0019] The beneficial effect of the above technical solution is that the damping block can be conveniently installed in the housing.

[0020] The damping block in the above technical solution is spherical.

[0021] The beneficial effect of the above technical solution is that if the damping block is placed on multiple support blocks, the damping block can rotate when the material hits the damping block, so that the damping block is evenly worn during long-term use, and only the diameter becomes smaller, thereby extending the service life of the damper.

[0022] The damping block in the above technical solution is a component made of ceramic or silicon carbide material.

[0023] The beneficial effects of the above technical solution are: good wear resistance and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the structural diagrams of the filling vertical pipe speed reduction and resistance increase system according to an embodiment of the present invention;

[0025] Figure 2 This is the second structural diagram of the filling vertical pipe speed reduction and resistance increase system according to an embodiment of the present invention;

[0026] Figure 3 This is an electrical connection diagram of the filling vertical pipe speed reduction and resistance increase system according to an embodiment of the present invention;

[0027] Figure 4 is a simplified structural diagram of the damper described in an embodiment of the present invention;

[0028] Figure 5 is a horizontal cross-sectional view of the damper described in an embodiment of the present invention;

[0029] Figure 6 4 is a connection diagram of the damper and the vertical pipe in an embodiment of the present invention.

[0030] In the figure: 1 vertical pipe, 2 damper, 21 shell, 211 upper shell, 212 lower shell, 22 damping block, 23 support block, 3 filling pipe, 4 receiving hopper, 5 incoming pipe, 6 controller, 7 flow sensor, 8 pressure sensor, 9 flow control valve, 10 pipe sleeve. DETAILED DESCRIPTION

[0031] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] like Figure 1 As shown, the present embodiment provides a filling vertical pipe speed reduction and resistance increase system, comprising a plurality of vertical pipes 1, wherein the plurality of vertical pipes 1 are vertically arranged and sequentially distributed in the up-down direction, and the ends of any two adjacent vertical pipes 1 close to each other are respectively connected and communicated through a damper 2, and the material is transported from top to bottom through the plurality of vertical pipes 1, and is decelerated by the damper 2, so that the material falls freely in each vertical pipe under the action of gravity, and its speed is continuously accelerated until it moves downward and passes through the damper, and is decelerated by the damper, and the decelerated material continues to accelerate downward under the action of gravity, and is decelerated when it encounters the damper again, and so on, so that the speed of the material moving in the plurality of vertical pipes will not be too high, so that the material wears the vertical pipe less, and the wear of the plurality of vertical pipes is relatively balanced, and if there are a plurality of dampers, the wear of the plurality of dampers is also relatively balanced, so that the service life of the plurality of vertical pipes is relatively balanced, and the service life length is relatively consistent.

[0033] Among them, the above technical solution also includes a receiving hopper 4, which is trumpet-shaped, with its larger opening end facing upward and its smaller opening end facing downward, and its smaller opening end is connected and communicated with the upper end of the vertical pipe 1 located at the top, so that the material can be transported downward as much as possible by gravity as the driving force.

[0034] like Figure 2As shown, the above technical solution also includes an "L"-shaped filling pipe 3, which has a vertical section and a horizontal section. The upper end of the vertical section of the filling pipe 3 is connected to the lower end of the vertical pipe 1 located at the bottom and is connected or integrally formed. Its structure is simple, so that the slurry transitions through a horizontal section before being discharged, so that its output speed is more uniform.

[0035] The above technical solution also includes an incoming material pipe 5, the discharge end of the incoming material pipe 5 extends into the receiving material hopper 4 through the larger opening end of the receiving material hopper 4 to transport materials into the receiving material hopper 4, and the feed end of the incoming material pipe 5 is used to communicate with the discharge end of the feeding device, so that the material supplied by the feeding device is directed to the receiving material hopper by the incoming material pipe.

[0036] like Figure 3 As shown, the above technical solution also includes a controller 6, a flow sensor 7, a pressure sensor 8 and a flow control valve 9. The flow sensor 7 is installed on the incoming pipe 5, and the pressure sensor 8 and the flow control valve 9 are respectively installed at the horizontal section of the filling pipe 3. The flow sensor 7, the pressure sensor 8 and the flow control valve 9 are all electrically connected to the controller 6, so that the flow rate of the material in the incoming pipe and the pressure of the filling pipe can be conveniently known, and the flow control valve can be used to adjust the flow rate of the material discharged from the filling pipe.

[0037] like Figure 4 As shown, the damper 2 in the above technical solution includes a shell 21 and a damping block 22, the shell 21 is hollow inside (composed of an upper shell 211 and a lower shell 212 connected by flanges, wherein the feed port is located at the upper end of the upper shell, and the discharge port is located at the lower end of the lower shell), the upper end thereof has a feed port connected to the interior thereof, and the lower end thereof has a discharge port connected to the interior thereof, the damping block 22 is placed in the shell 21, and is located between the feed port and the discharge port, and a gap is provided between the damping block 22 and the inner wall of the shell 21 to connect the feed port and the discharge port, the material enters the shell 21 at high speed through the feed port of the damper 2, hits the damping block 22 to be decelerated, and is discharged downward to the discharge port through the gap after deceleration, and the structure is simple, so that the material is decelerated once after moving downward into the shell and hitting the damping block.

[0038] In the above technical solution, the feed port is located in the middle of the upper end of the shell 21, and the edges of the damping block 22 protrude from the edges of the feed port, so that the material can fully hit the damping block after entering the shell, so that the material entering the shell can be decelerated once.

[0039] In the above technical solution, a plurality of support blocks 23 are arranged in the shell 21, and the plurality of support blocks 23 are distributed in a ring-shaped manner. The damping block 22 is placed on the plurality of support blocks 23 or fixedly installed on the plurality of support blocks 23, so that the damping block can be conveniently installed in the shell.

[0040] The damping block 22 described in the above technical solution is spherical, so that when the damping block is placed on multiple support blocks, the damping block can rotate when the material hits the damping block, so that the damping block is evenly worn in various parts during long-term use, and only the diameter becomes smaller, thereby extending the private life of the damper.

[0041] Among them, Figure 5 As shown, there are at least three support blocks, preferably three support blocks, and the horizontal cross-section of the inner cavity of the shell is circular. The three support blocks are evenly distributed in the shell at circumferential intervals, so that the damping block is placed between the three support blocks.

[0042] The damping block in the above technical solution is made of a highly wear-resistant material. Preferably, the damping block is a ceramic or silicon carbide material component, which has good wear resistance and long service life.

[0043] Wherein, the controller is a PLC controller, wherein the height of each vertical pipe must be such that the speed of the material when freely falling from its upper end to its lower end should not be greater than 25m / s.

[0044] The controller is used to receive signals from the flow sensor 7 and the pressure sensor 8, and control the opening and closing amount of the flow control valve 9, so that the entire filling vertical pipe speed reduction and resistance increase system can achieve full pipe feeding (that is, there is no cavity in the pipeline during feeding), and when the filling vertical pipe speed reduction and resistance increase system is full of pipe feeding, the movement speed of the material in the vertical pipe, the damper and the filling pipe is smaller than that of a free fall, so that its wear is relatively small, so that its service life is extended, wherein the flow sensor 7 is used to measure the feeding flow of the incoming pipe, and the flow control valve 9 is controlled by the controller. The opening and closing amount of the control valve is measured, and the pressure near the flow control valve in the filling pipe is measured according to the pressure sensor. During the initial injection, the flow control valve should make the flow rate of the material passing through it smaller than the flow rate of the incoming pipe, so that the materials in the multi-section vertical pipe and the filling pipe should quickly gather into full pipes. After knowing that the multi-section vertical pipe and the filling pipe are full through the pressure sensor, the flow control valve can be adjusted through the controller until its flow rate is consistent with or close to the flow rate measured by the flow sensor, so that the feeding and discharging of the entire filling vertical pipe speed reduction and resistance increase system are balanced, and are in a state with minimal wear on the vertical pipe, damper and filling pipe.

[0045] Among them, Figure 6As shown, preferably, the feed port and the discharge port of each damper are respectively connected to the corresponding vertical pipe through a pipe sleeve 10 by interference fit, such as the feed port of the damper and the lower end of the vertical pipe just above it are both extended into a pipe sleeve 10, and are both interference fit with the pipe sleeve 10 to achieve a sealed connection, and the discharge end of the damper is the same as above, so it is not described in detail.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A filling vertical pipe speed reduction and resistance increase system, characterized in that: The invention comprises a plurality of vertical pipes (1), wherein the plurality of vertical pipes (1) are arranged vertically and are sequentially distributed in the vertical direction. The ends of any two adjacent vertical pipes (1) that are close to each other are connected and communicated through a damper (2). The material is transported from top to bottom through the plurality of vertical pipes (1) and is decelerated by the damper (2). The damper (2) comprises a shell (21) and a damping block (22). The shell (21) is hollow inside and is composed of an upper shell (211) and a lower shell (212) connected by flanges. The upper end of the shell (21) has a feed port connected to the inside thereof, and the lower end of the shell (21) has a discharge port connected to the inside thereof. The damping block (22) is disposed in the shell (21) and is located between the feed port and the discharge port. The damping block (22) is in contact with the shell (21). The inner wall of the shell (21) has a gap connecting the feed port and the discharge port. The material enters the shell (21) at a high speed through the feed port of the damper (2), hits the damping block (22) to be decelerated, and is discharged downward to the discharge port through the gap after deceleration. The feed port is located in the middle of the upper end of the shell (21), and the edges of the damping block (22) all protrude from the edges of the feed port. A plurality of support blocks (23) are arranged in the shell (21), and the plurality of support blocks (23) are distributed in an annular manner. The damping block (22) is placed on the plurality of support blocks (23). When the material hits the damping block (22), the damping block (22) is driven to rotate. The damping block (22) is spherical.

2. The filling vertical pipe speed reduction and resistance increase system according to claim 1, characterized in that: It also comprises an "L"-shaped filling pipe (3), the filling pipe (3) having a vertical section and a horizontal section, the upper end of the vertical section of the filling pipe (3) being connected to and in communication with the lower end of the vertical pipe (1) located at the bottom or being integrally formed.

3. The filling vertical pipe speed reduction and resistance increase system according to claim 2, characterized in that: It also includes a material receiving hopper (4), which is trumpet-shaped, with its larger opening end facing upward and its smaller opening end facing downward, and its smaller opening end is connected to and communicates with the upper end of the vertical pipe (1) located at the top.

4. The filling vertical pipe speed reduction and resistance increase system according to claim 3, characterized in that: It also includes a material incoming pipe (5), the material outlet end of the material incoming pipe (5) extends into the material receiving hopper (4) through the larger opening end of the material receiving hopper (4) to transport materials into the material receiving hopper (4), and the material inlet end of the material incoming pipe (5) is used to communicate with the material outlet end of the feeding device.

5. The filling vertical pipe speed reduction and resistance increase system according to claim 4, characterized in that: It also includes a controller (6), a flow sensor (7), a pressure sensor (8) and a flow control valve (9), wherein the flow sensor (7) is installed on the incoming pipe (5), the pressure sensor (8) and the flow control valve (9) are respectively installed at the horizontal section of the filling pipe (3), and the flow sensor (7), the pressure sensor (8) and the flow control valve (9) are all electrically connected to the controller (6).

6. The filling vertical pipe speed reduction and resistance increase system according to claim 1, characterized in that: The damping block (22) is a component made of ceramic or silicon carbide material.

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