A vertical sand silo filling slurry preparation system

Abstract

This application discloses a vertical sand silo filling slurry preparation system, belonging to the technical field of engineering filling equipment. The system includes a cement silo, valves, a feeder, a weighing machine, a mixer, a lower hopper, a pinch valve, a concentration meter, a water supply pipe, a flow meter, a sand discharge valve, a sand discharge pipe, a sand silo, and a water supply valve. The vertical sand silo filling slurry preparation system provided in this application has a simple structure, stable sand discharge, and minimal fluctuations in filling slurry concentration and flow rate. This ensures the supply of slurry prepared in the filling system, maintaining a continuous and stable filling slurry flow rate and concentration.

Description

Technical Field

[0001] The present application belongs to the technical field of engineering filling equipment, and specifically relates to a vertical sand bin filling slurry preparation system that can be used for the preparation and transportation of filling slurry in various mine filling projects and realizes continuous filling of goafs. Background Art

[0002] During the mining process of various metal mines, the volume of the mined-out area becomes larger and larger. When it reaches a certain level, it will cause ground pressure problems such as collapse and collapse, which will inevitably affect the overall mining of the ore deposit. In order to ensure the safe mining of the ore body and the rational use of resources, it is often necessary to backfill the mined-out area. There are many types of filling projects. According to different mine types, some use block stone cementation filling, some use Gobi aggregate cementation filling, some use river sand cementation filling, and some use graded tailings cementation filling to provide conditions for subsequent mining projects.

[0003] However, the concentration and flow rate of the filling materials prepared by existing engineering filling equipment fluctuate greatly, resulting in large changes in the density of the filling material inside the filling space, affecting the structural stability. Summary of the Invention

[0004] The purpose of the embodiment of the present application is to provide a vertical sand bin filling slurry preparation system, which has a simple structure, stable sand release, and small fluctuations in filling slurry concentration and flow rate. It can ensure the supply of slurry preparation in the filling system, and make the filling slurry flow rate and concentration continuously stable, thereby solving the technical problems involved in the background technology.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] A vertical sand silo filling slurry preparation system includes a cement silo, a valve, a feeder, a weighing machine, a mixer, a hopper, a pinch valve, a concentration meter, a water supply pipe, a flow meter, a sand discharge valve, a sand discharge pipe, a sand silo and a water supply valve, wherein:

[0007] The valve is arranged at the discharge port of the cement silo;

[0008] The feed port of the feeder is connected to the discharge port of the cement silo;

[0009] The feed port of the weighing machine is connected to the discharge port of the feeder;

[0010] The feed port of the mixer is connected to the discharge port of the weighing machine;

[0011] The feed port of the lower hopper is connected to the discharge port of the mixer;

[0012] One end of the sand discharge pipe is connected to the discharge port of the sand bin, and the other end is connected to the feed port of the mixer;

[0013] The sand discharge valve, the concentration meter, the flow meter and the pinch valve are sequentially arranged on the sand discharge pipe from the discharge port of the sand bin to the feed port of the mixer;

[0014] The water supply pipe is connected to the sand discharge pipe between the concentration meter and the flow meter;

[0015] The water supply valve is arranged on the water supply pipe.

[0016] As a preferred improvement of the present application, the feeder is a screw feeder.

[0017] As a preferred improvement of the present application, the weighing machine is a spiral electronic scale.

[0018] As a preferred improvement of the present application, the mixer is a horizontal mixer.

[0019] As a preferred improvement of the present application, a high-speed mixer is further included between the discharge port of the mixer and the feed port of the lower hopper.

[0020] As a preferred improvement of the present application, the sand bin is a vertical sand bin.

[0021] As a preferred improvement of the present application, the sand silo includes a silo barrel, a silo top, a silo bottom, a pipe rack, a slurry pipe, an inclined pipe, a buffer cylinder, a support rod, a rubber partition and a weight plate. The silo barrel is cylindrical with both ends open and the interior hollow; the silo top and the silo bottom are respectively fixed to the two open ends of the silo barrel; the slurry pipe is fixed to the outer surface of the silo top through the pipe rack, and the buffer cylinder is fixed to the inner surface of the silo top; one end of the inclined pipe is connected to the slurry pipe, and the other end is inserted into the buffer cylinder; the rubber partition is fixed to the end of the buffer cylinder away from the silo top through the support rod; the weight plate is fixed to the end of the rubber partition away from the buffer cylinder.

[0022] As a preferred improvement of the present application, the bottom of the silo is in an inverted cone shape, the discharge port of the sand silo is arranged at the bottom of the cone of the silo bottom, the silo bottom includes an inclined wall, and the sand silo also includes a main air duct, a main air duct bracket, a nozzle, a perforated reinforcement plate, a compressed air pipe gate valve, a compressed air pipe, a short connecting pipe and a drain valve, the main air duct is installed on the inner surface of the inclined wall along the inclined direction of the inclined wall through the main air duct bracket; the number of the nozzles is multiple, and the multiple nozzles are arranged on the main air duct at intervals along the inclined direction of the inclined wall; the compressed air pipe is fixed to the inclined wall through the perforated reinforcement plate, and the compressed air pipe is connected to the main air duct; the compressed air pipe gate valve is arranged on the compressed air pipe; the short connecting pipe is arranged at one end of the main air duct near the cone top of the silo bottom; the drain valve is arranged on the short connecting pipe.

[0023] As a preferred improvement of the present application, the nozzles are arranged on the main air duct with gradually increasing spacing along the inclined direction of the inclined wall.

[0024] As a preferred improvement of the present application, the short pipe is fixed to the main air duct by means of a flange and bolts.

[0025] The beneficial effects of this application are:

[0026] 1. Simple structure, stable sand discharge, small fluctuation of filling slurry concentration and flow rate, which can ensure the supply of slurry preparation in the filling system and make the filling slurry flow rate and concentration continuously stable;

[0027] 2. By setting up inclined pipes, buffer cylinders, rubber partitions and weighted plates, it is possible to prevent large swings that make it difficult for the tailings to settle, thereby reducing the impact force of the slurry to the greatest extent.

[0028] 3. By setting up compressed air pipes and nozzles, non-contact pneumatic stirring can be performed on the high-concentration slurry in the silo. Furthermore, by installing the nozzles at unequal intervals, especially relatively sparsely near the bottom of the cone, the nozzles can be relatively evenly distributed across the entire silo bottom, thereby enhancing the sand release and silo cleaning capabilities and improving the slurry making effect.

[0029] 4. By setting up a short pipe and a drain valve, it is easy to clean up the debris in the main air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a structural schematic diagram of a vertical sand bin filling slurry preparation system provided in Example 1 of the present application;

[0031] Figure 2 This is a structural schematic diagram of a vertical sand bin filling slurry preparation system provided in Example 2 of the present application;

[0032] Figure 3 It is along Figure 2 Schematic diagram of the structure viewed from above along the AA line;

[0033] Figure 4 It is along Figure 2 Schematic diagram of the structure viewed from above along the AA line;

[0034] Figure 5 It is along Figure 2 Schematic diagram of the structure viewed from above along the CC line. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0037] The vertical sand bin filling slurry preparation system provided in the embodiment of the present application is described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0038] Example 1

[0039] See Figure 1 , is a vertical sand silo filling slurry preparation system provided in an embodiment of the present application, including a cement silo 1, a valve 2, a feeder 3, a weighing machine 4, a mixer 5, a high-speed mixer 6, a lower hopper 7, a pinch valve 9, a flow meter 10, a water supply valve 11, a concentration meter 12, a sand discharge valve 13, a sand silo 14, a sand discharge pipe 15 and a water supply pipe 16.

[0040] The valve 2 is provided at the discharge port of the cement silo 1 and is used to control the cement silo 1 to discharge cement.

[0041] The feed port of the feeder 3 is connected to the discharge port of the cement silo 1. In a specific embodiment of the present application, the feeder 3 is a horizontal feeder.

[0042] The feed port of the weighing machine 4 is connected to the discharge port of the feeder 3. In a specific embodiment of the present application, the weighing machine 4 is a spiral electronic scale.

[0043] The feed port of the mixer 5 is connected to the discharge port of the weighing machine 4. In a specific embodiment of the present application, the mixer is a horizontal mixer.

[0044] The feed port of the high-speed stirrer 6 is connected to the discharge port of the stirrer 5 .

[0045] The feed port of the lower hopper 7 is connected to the discharge port of the high-speed mixer 6.

[0046] One end of the sand discharge pipe 15 is connected to the discharge port of the sand bin 14, and the other end is connected to the feed port of the mixer 5. In the specific embodiment of the present application, the sand bin 14 is a vertical sand bin.

[0047] The sand discharge valve 13 , the concentration meter 12 , the flow meter 10 , and the pinch valve 9 are sequentially arranged on the sand discharge pipe 15 in a direction from the discharge port of the sand bin 14 to the feed port of the mixer 5 .

[0048] The water supply pipe 16 is connected to the sand discharge pipe 15 between the concentration meter 10 and the flow meter 12 .

[0049] The water supply valve 11 is provided on the water supply pipe 16 for controlling water supply.

[0050] Example 2

[0051] See Figure 2 and 3 As shown, Example 2 provides a vertical sand bin filling slurry preparation system, which differs from Example 1 in that:

[0052] The sand bin 14 includes a bin tube 141, a bin top 142, a bin bottom 143, a pipe rack 144, a slurry pipe 145, an inclined pipe 146, a buffer tube 147, a support rod 148, a rubber partition 149 and a weight plate 150. The bin tube 141 is cylindrical with both ends open and a hollow interior.

[0053] The silo top 142 and the silo bottom 143 are respectively fixed to the two open ends of the silo tube 141 .

[0054] The slurry pipe 145 is fixed to the outer surface of the silo roof 142 through the pipe rack 144 .

[0055] The buffer tube 147 is fixed to the inner surface of the silo top 142 . Specifically, the buffer tube 147 is in the shape of a hollow cylinder with two ends open.

[0056] One end of the inclined tube 146 is connected to the slurry pipe 145 , and the other end is inserted into the buffer cylinder 147 .

[0057] In some embodiments, the inclined pipe 146 is connected to the slurry pipe 145 through an elbow 140 , and the angle between the inclined pipe 146 and the horizontal plane is in the range of 15 to 25 degrees.

[0058] The rubber diaphragm 149 is fixed to the end of the buffer cylinder 147 away from the silo top 142 through the support rod 148. Figure 4As shown, there are two support rods 148 and they are arranged vertically and crosswise. In this way, the slurry will generate a vortex in the inclined tube 146, and the vortex will flow to the support rods 148, and then impact the rubber diaphragm 149 and then slow down and sink.

[0059] The weighting plate 150 is fixed to one end of the rubber diaphragm 149 away from the buffer cylinder 147. The weighting plate 150 prevents the tailings from swinging too much and making it difficult to settle, thereby mitigating the impact force of the slurry to the greatest extent.

[0060] Recombination Figure 5 As shown, the silo bottom 143 is in an inverted cone shape, the discharge port of the sand silo 14 is arranged at the cone bottom of the silo bottom 143, and the silo bottom 143 includes an inclined wall 1431.

[0061] The sand bin 14 also includes a main air duct 151, a main air duct bracket 152, a nozzle 153, a perforated reinforcement plate 154, a compressed air pipe gate valve 155, a compressed air pipe 156, a short pipe 157 and a drain valve 158. The main air duct 151 is installed on the inner surface of the inclined wall 1431 along the inclined direction of the inclined wall 1431 through the main air duct bracket 152.

[0062] There are multiple nozzles 153 , and the multiple nozzles 153 are arranged on the main air duct 151 at intervals along the inclined direction of the inclined wall 1431 .

[0063] During compressed air slurrying, the compressed air pipe gate valve 155 is opened and the drain valve 158 is closed. At this time, the nozzles 153 installed on the main air duct bracket 152 are immediately activated to perform non-contact pneumatic stirring on the high-concentration slurry in the bin. In order to make the slurry more uniform, the nozzles 153 are installed at unequal intervals. Specifically, along the inclination direction of the inclined wall 1431, the nozzles 153 are arranged on the main air duct 151 with gradually increasing spacing. In this way, the nozzles 153 are relatively sparse near the cone bottom, so that the nozzles 153 are relatively evenly distributed across the entire bin bottom 143, enhancing the sand release and bin cleaning capabilities and improving the slurrying effect.

[0064] The compressed air pipe 156 is fixed to the inclined wall 1431 through the perforated reinforcing plate 154, and the compressed air pipe 156 is connected to the main air pipe 151. By providing the perforated reinforcing plate 154, compressed air slurrying can be stably achieved.

[0065] The compressed air pipe gate valve 155 is disposed on the compressed air pipe 156 .

[0066] The short pipe 157 is disposed at one end of the main air duct 151 adjacent to the conical top of the bin bottom 143 .

[0067] The drain valve 158 is provided on the short pipe 157 , so that when there is a little debris in the main air duct 151 , the drain valve 158 can be opened to discharge the debris and then closed immediately to compress air for slurry making.

[0068] Furthermore, the short pipe 157 is fixed to the main air duct 151 by means of a flange 159 and bolts 160. In this way, when there are a lot of debris in the main air duct 151 and it seriously affects the compressed air pulping effect, the bolts connected to the short pipe 157 can be unscrewed and the flange 159 can be opened. After the debris is completely cleaned up, the flange 159 can be installed and compressed air pulping can be carried out.

[0069] The working principle of the vertical sand bin filling slurry preparation system provided in the embodiment of the present application is as follows:

[0070] Tailings slurry is stored in sand silo 14. After the tailings slurry is prepared, pinch valve 9 and sand release valve 13 on sand release pipe 15 are opened to release the slurry. The concentration of the tailings slurry is measured by concentration meter 12, and the flow rate is measured by flow meter 10. When the concentration of the slurry is high, the water supply valve 11 is opened to add water and adjust the concentration to a reasonable value. Cement silo 1 is used to store cement. After the slurry is released, valve 2 at the bottom of the cement silo is opened. Cement is added through feeder 3 and weighed by weighing machine 4 to achieve the designed mix ratio. The cement and tailings slurry are then mixed and homogenized in two stages in mixer 5 and high-speed mixer 6. The slurry then flows into the filling stope through hopper 7 and filling borehole 8, thereby achieving continuous filling of the goaf.

[0071] The beneficial effects of this application are:

[0072] 1. Simple structure, stable sand discharge, small fluctuation of filling slurry concentration and flow rate, which can ensure the supply of slurry preparation in the filling system and make the filling slurry flow rate and concentration continuously stable;

[0073] 2. By setting up inclined pipes, buffer cylinders, rubber partitions and weighted plates, it is possible to prevent large swings that make it difficult for the tailings to settle, thereby reducing the impact force of the slurry to the greatest extent.

[0074] 3. By setting up compressed air pipes and nozzles, non-contact pneumatic stirring can be performed on the high-concentration slurry in the silo. Furthermore, by installing the nozzles at unequal intervals, especially relatively sparsely near the bottom of the cone, the nozzles can be relatively evenly distributed across the entire silo bottom, thereby enhancing the sand release and silo cleaning capabilities and improving the slurry making effect.

[0075] 4. By setting up a short pipe and a drain valve, it is easy to clean up the debris in the main air duct.

[0076] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A vertical sand silo filling slurry preparation system, characterized in that: It includes cement silo, valve, feeder, weighing machine, mixer, hopper, pinch valve, concentration meter, water supply pipe, flow meter, sand discharge valve, sand discharge pipe, sand silo and water supply valve, among which, The valve is arranged at the discharge port of the cement silo; The feed port of the feeder is connected to the discharge port of the cement silo; The feed port of the weighing machine is connected to the discharge port of the feeder; The feed port of the mixer is connected to the discharge port of the weighing machine; The feed port of the lower hopper is connected to the discharge port of the mixer; One end of the sand discharge pipe is connected to the discharge port of the sand silo, and the other end is connected to the feed port of the mixer; the sand silo includes a silo, a silo top, a silo bottom, a pipe rack, a slurry pipe, an inclined pipe, a buffer cylinder, a support rod, a rubber partition and a weighting plate, and the silo is cylindrical with both ends open and hollow inside; the silo top and the silo bottom are respectively fixed to the two open ends of the silo; the slurry pipe is fixed to the outer surface of the silo top through the pipe rack, and the buffer cylinder is fixed to the inner surface of the silo top; one end of the inclined pipe is connected to the slurry pipe, and the other end is inserted into the buffer cylinder; the rubber partition is fixed to the end of the buffer cylinder away from the silo top through the support rod; the weighting plate is fixed to the end of the rubber partition away from the buffer cylinder; the silo bottom is in an inverted cone shape, and the discharge port of the sand silo is arranged at the cone bottom of the silo bottom. The silo bottom includes an inclined wall, and the sand silo also includes a main air duct, a main air duct bracket, a nozzle, a perforated reinforcement plate, a compressed air pipe gate valve, a compressed air pipe, a short pipe and a drain valve. The main air duct is installed on the inner surface of the inclined wall along the inclined direction of the inclined wall through the main air duct bracket; there are multiple nozzles, and the multiple nozzles are arranged on the main air duct at intervals along the inclined direction of the inclined wall, and the nozzles are arranged on the main air duct with gradually increasing spacing along the inclined direction of the inclined wall; the compressed air pipe is fixed to the inclined wall through the perforated reinforcement plate, and the compressed air pipe is connected to the main air duct; the compressed air pipe gate valve is arranged on the compressed air pipe; the short pipe is fixed to one end of the cone top of the main air duct near the silo bottom by a flange and bolts; the drain valve is arranged on the short pipe; The sand discharge valve, the concentration meter, the flow meter and the pinch valve are sequentially arranged on the sand discharge pipe from the discharge port of the sand bin to the feed port of the mixer; The water supply pipe is connected to the sand discharge pipe between the concentration meter and the flow meter; The water supply valve is arranged on the water supply pipe.

2. A vertical sand silo filling slurry preparation system according to claim 1, characterized in that: The feeder is a screw feeder.

3. A vertical sand silo filling slurry preparation system according to claim 1, characterized in that: The weighing machine is a spiral electronic scale.

4. A vertical sand silo filling slurry preparation system according to claim 3, characterized in that: The mixer is a horizontal mixer.

5. A vertical sand silo filling slurry preparation system according to claim 4, characterized in that: It also includes a high-speed mixer arranged between the discharge port of the mixer and the feed port of the lower hopper.

6. A vertical sand silo filling slurry preparation system according to claim 1, characterized in that: The sand bin is a vertical sand bin.

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