Mine polymer material long-distance transport device

Abstract

The utility model belongs to the field of mine long-distance transport device, disclose mine polymer material long-distance transport device, include: multiple parallelly arranged propelling pipe and multiple three -way connecting between adjacent propelling pipe, the delivery port between first support pipe and the delivery port of second support pipe passes through flexible hose water tightness connection, the end of second support pipe is radially provided with a plurality of limit slot, the outer wall of first support pipe is fixed with the limit projection that coordinates with limit slot, the width of limit projection is less than the width of limit slot, with first support pipe can relative second support pipe carry out axial sliding and circumferential rotation displacement, when relative displacement is produced between two propelling pipes, utilize three -way itself torsional resistance, drive second support pipe along the axial sliding of first support pipe, make three -way keep relative parallel state, and the elastic expansion deformation of hose absorbs displacement difference, effectively relieve stress concentration, reduce pipeline rupture risk.

Description

Technical Field

[0001] This disclosure pertains to the field of long-distance transportation equipment for mining, specifically relating to long-distance transportation equipment for polymer materials used in mining. Background Technology

[0002] In the support process of composite roof working faces in underground coal mines, it is often necessary to transport polymer reinforcement materials to dynamic grouting points to enhance the stability of the roof. Traditional transportation methods mainly rely on manual handling or conveyor transport, which has problems such as high labor intensity, large number of personnel required, high safety risks, and impact on equipment maintenance. In addition, barrelled materials are prone to damage due to collisions during transportation, resulting in material waste and environmental pollution.

[0003] After the materials are transported to the corresponding grouting construction point, the two materials need to be mixed and poured. Although long-distance pumping is now commonly achieved using a pipeline transportation system with a grouting pump connected to a high-pressure hose, in order to adapt to the complex working conditions underground and to take into account space and cost constraints, the two materials are usually transported through parallel pipelines, and connected above the pouring point by a tee and a valve, so as to control the mixing and discharge of the two materials simultaneously during pouring.

[0004] However, to improve the adaptability of pipelines in the complex environment of mines, flexible pipelines with a certain degree of elasticity are generally used. During material transportation, pipeline vibration caused by material flow can easily lead to horizontal displacement and vertical misalignment between the two sets of material pipelines, which may cause kinking at the connection between the tee and the feed pipe, resulting in stress concentration and ultimately causing the breakage of that part. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this disclosure is to provide a long-distance transportation device for polymer materials in mining, which solves the problems of stress concentration in the horizontal displacement of pipelines and failure of vertical misaligned hoses caused by relative displacement of adjacent hydraulic supports during coal mining and undulation of the roadway floor.

[0006] The objective of this disclosure can be achieved through the following technical solutions:

[0007] A long-distance transportation device for mining polymer materials includes: multiple parallel propulsion pipes, and multiple tees connecting adjacent propulsion pipes;

[0008] Each of the propulsion tubes is fixedly sleeved with a first support tube on its outer side, and a second support tube is slidably sleeved with the outer side of the first support tube.

[0009] The first and second support tubes have coaxially corresponding discharge ports at their ends near the tee.

[0010] The discharge port of the first support tube and the discharge port of the second support tube are connected in a watertight manner by a flexible hose.

[0011] The second support tube has multiple limiting grooves radially opened at its end, and the outer wall of the first support tube is fixed with limiting protrusions that cooperate with the limiting grooves;

[0012] The width of the limiting protrusion is smaller than the width of the limiting groove, so that the second support tube can slide axially and rotate circumferentially relative to the first support tube.

[0013] In some disclosures, a valve is provided on the inner side of the tee, and a connecting pipe is detachably connected to the lower end of the tee.

[0014] In some disclosures, the sidewall of the limiting protrusion is arranged parallel to the central axis of the first support tube, and the width of the limiting protrusion is smaller than the width of the limiting groove.

[0015] In some disclosures, the two ends of the hose are respectively watertightly connected to the inner wall of the outlet of the first support pipe and the inner wall of the outlet of the second support pipe.

[0016] In some disclosures, both ends of the limiting protrusion are fixed with retaining rings, and the inner side of the second support tube is fixed with a baffle. The limiting groove is provided through the baffle, and the baffle is arranged parallel to the end of the second support tube. The movement path of the first support tube is between the two retaining rings.

[0017] In some disclosures, the first support tube is fixedly connected to the flexible layer, and the end of the second support tube is fixedly connected to the outer wall of the first support tube by the flexible layer.

[0018] In some disclosures, the flexible layer is made of plastic polyurethane.

[0019] In some disclosures, the first support tube is slidably engaged with the flexible layer, a groove is provided at the end of the outer wall of the first support tube, and a protrusion is fixed at the end of the flexible layer, and the flexible layer is slidably connected to the groove through the protrusion.

[0020] In some disclosures, the protruding sidewall has a triangular cross-section, and the apex of the triangle fits against the inner wall of the groove.

[0021] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0022] A fixed connection refers to a connection in which parts or components are fixed in place and there is no relative movement between them;

[0023] A rotating connection is a connection between parts that allows the parts to rotate relative to each other.

[0024] Threaded connections are a type of detachable fixed connection with advantages such as simple structure, reliable connection, and convenient assembly and disassembly. They are widely used in mechanical engineering and connection structure fields.

[0025] A sliding connection is a connection between parts that allows the parts to slide against each other.

[0026] The beneficial effects of this disclosure are:

[0027] 1. When the two propulsion tubes are offset relative to each other, the torsional strength of the tee itself drives the second support tube to slide along the axial direction of the first support tube, thereby maintaining the relative parallel state of the tee. At the same time, the hose absorbs the displacement difference through elastic expansion and contraction deformation, effectively relieving stress concentration and reducing the risk of pipe rupture.

[0028] 2. By matching the width difference between the limiting protrusion and the limiting groove, the second support pipe can achieve circumferential adaptive rotation within the range between the two inner walls of the limiting groove, thereby compensating for vertical misalignment caused by the undulation of the roadway and inhibiting the kinking and damage of the hose. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this disclosure;

[0031] Figure 2 This is a top view schematic diagram of an embodiment of this disclosure;

[0032] Figure 3 This is an embodiment of the present disclosure. Figure 2 Schematic diagram of AA section in the middle;

[0033] Figure 4 This is a schematic diagram of the connection structure between the first support tube and the second support tube according to an embodiment of this disclosure;

[0034] Figure 5 This is a cross-sectional structural diagram of the flexible layer and the first support tube in the second embodiment of this disclosure.

[0035] In the diagram: 1. Propulsion pipe; 2. Tee; 3. First support pipe; 31. Limiting protrusion; 32. Retaining ring; 4. Second support pipe; 41. Limiting groove; 42. Baffle; 5. Hose; 6. Discharge port; 7. Valve; 8. Connecting pipe; 9. Flexible layer; 91. Slide groove; 92. Protrusion. Detailed Implementation

[0036] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0037] Please refer to Figures 1 to 5 A long-distance transportation device for mining polymer materials includes: multiple parallel propulsion pipes 1, and multiple tees 2 connected between adjacent propulsion pipes 1;

[0038] Each propulsion tube 1 is fixedly sleeved with a first support tube 3 on its outer side, and a second support tube 4 is slidably sleeved with the outer side of the first support tube 3.

[0039] The first support pipe 3 and the second support pipe 4 have coaxially corresponding discharge ports 6 at their ends near the tee 2.

[0040] The outlet 6 of the first support pipe 3 and the outlet 6 of the second support pipe 4 are connected in a watertight manner by a flexible hose 5.

[0041] The end of the second support tube 4 is provided with a plurality of limiting grooves 41 radially, and the outer wall of the first support tube 3 is fixed with a limiting protrusion 31 that cooperates with the limiting grooves 41.

[0042] The width of the limiting protrusion 31 is smaller than the width of the limiting groove 41, so that the second support tube 4 can slide axially and rotate circumferentially relative to the first support tube 3.

[0043] In use, the two sets of propulsion pipes 1 are filled with different polymer materials. The high-pressure hose is made of flexible material, so it is flexible. The propulsion pipe 1 is laid above the grouting point and fixed on the conveyor in the mine. The material is driven by the pneumatic conveyor or centrifugal pump, which drives the polymer material in the propulsion pipe 1 to move towards the side closer to the grouting point. During the movement of the polymer material, it moves forward with the conveyor through the two sets of propulsion pipes 1.

[0044] When the polymer material in the two sets of propulsion tubes 1 moves forward, the two propulsion tubes 1 are connected by a three-way valve 2. When the moving speed of the polymer material in the two propulsion tubes 1 is not exactly the same;

[0045] When the two propulsion pipes 1 are axially misaligned, the second support pipe 4 corresponding to each propulsion pipe 1 slides along the first support pipe 3 on its inner side. At the same time, the hose 5 between the first support pipe 3 and the second support pipe 4 undergoes elastic deformation to compensate for the displacement difference and avoid the risk of bending and breaking of traditional rigid pipes due to misalignment. This is to adapt to the misalignment of the discharge port 6 of the first support pipe 3 and the inlet port of the second support pipe 4 when the progress of the two propulsion pipes 1 is not completely synchronized.

[0046] Compared to the traditional rigid connection between the tee 2 and the propulsion tube 1, when the two propulsion tubes 1 are not completely synchronized, the connection between the tee 2 and the propulsion tube 1 is prone to bending and cracking, which can easily lead to the risk of leakage of polymer materials.

[0047] Please refer to Figure 3 A valve 7 is installed on the inner side of the tee 2, and a connecting pipe 8 is detachably connected to the lower end of the tee 2; the valve 7 is of the LDBAEP series. The valve 7 controls the outflow and storage of polymer material in the two propulsion pipes 1, and at the same time, it is connected to the other end outlet of the tee 2 through the connecting pipe 8, so that the polymer material in the propulsion pipe 1 can be transported to the pouring point through the connecting pipe 8. The tee 2 and the connecting pipe 8 can be connected by flanges, clamps or snap-fit ​​devices, so that the two can be quickly disconnected and connected to the connecting pipe 8.

[0048] Please refer to Figures 1 to 3 The sidewall of the limiting protrusion 31 is parallel to the central axis of the first support tube 3, and the width of the limiting protrusion 31 is smaller than the width of the limiting groove 41.

[0049] During use, when the polymer material inside the propulsion tube 1 moves, the vertical fluctuation of the propulsion tube 1 causes relative misalignment between the two propulsion tubes 1 in the vertical direction. The second support tube 4 rotates around its own central axis until the side wall of the limiting groove 41 fits against the side wall of the limiting protrusion 31, thereby limiting the rotation angle of the second support tube 4. At the same time, since the width of the limiting protrusion 31 is smaller than the width of the limiting groove 41, relative circumferential displacement can occur between the first support tube 3 and the second support tube 4, thereby further improving the flexibility of the device.

[0050] Please refer to Figure 3 The two ends of the hose 5 are respectively watertightly connected to the inner wall of the outlet 6 of the first support pipe 3 and the inner wall of the outlet 6 of the second support pipe 4.

[0051] In use, the first support pipe 3 and the second support pipe 4 are connected by a flexible hose 5. The deformation capacity of the flexible hose 5 itself compensates for the displacement difference caused by the shaking of the two propulsion pipes 1, so as to avoid stress concentration when the first support pipe 3 is rigidly connected to the tee 2. The flexible hose 5 softens the connection transition area, effectively disperses the stress peak, and greatly improves the fatigue resistance and overall life of the flexible hose 5 under dynamic working conditions. At the same time, the inner wall of the flexible hose 5 is sealed to the inner wall of the outlet 6 of the first support pipe 3 and the second support pipe 4 respectively. The entire flexible hose 5 is located inside the second support pipe 4, so that the polymer material flows through a channel with a continuous and smooth transition of the inner wall. The sealing interface is located inside the pipe, and is minimally affected by external mechanical impact, dust pollution and accidental bumps. It is particularly suitable for the harsh working conditions of high vibration and high dust in coal mines.

[0052] Please refer to Figures 3 to 4 Both ends of the limiting protrusion 31 are fixed with retaining rings 32, and the inner side of the second support tube 4 is fixed with a baffle 42. The limiting groove 41 is set through the baffle 42, and the baffle 42 is set parallel to the end of the second support tube 4. The moving path of the first support tube 3 is between the two retaining rings 32.

[0053] In use, when the baffle 42 on the first support tube 3 moves to the end of the limiting protrusion 31, the side wall of the baffle 42 abuts against the inner wall of the retaining ring 32, thereby restricting the excessive movement of the second support tube 4.

[0054] First Embodiment

[0055] Please refer to Figure 1 and Figure 2 The first support tube 3 is fixedly connected to the flexible layer 9, and the end of the second support tube 4 is fixedly connected to the outer wall of the first support tube 3 with the flexible layer 9.

[0056] The two ends of the flexible layer 9 are fixedly connected to the ends of the first support tube 3 and the second support tube 4, respectively. The outer wall of the first support tube 3, the inner wall of the second support tube 4, and the two flexible layers 9 form a sealed space, which further restricts the leakage of polymer materials from the hose 5 and the second support tube 4, and helps to further improve the sealing performance of the internal sealed space of the second support tube 4.

[0057] The flexible layer 9 is made of plastic polyurethane; it has good elastic deformation force and antistatic ability, which helps to reduce the sparks generated by static electricity in the flexible layer 9 during the mutual pulling process of the first support pipe 3 and the second support pipe 4 when it is used in underground coal mines.

[0058] Second Embodiment

[0059] Please refer to Figure 1 and Figure 5 The first support tube 3 is slidably engaged with the flexible layer 9. A groove 91 is provided at the end of the outer wall of the first support tube 3, and a protrusion 92 is fixed at the end of the flexible layer 9. The flexible layer 9 is slidably connected to the groove 91 through the protrusion 92.

[0060] In use, the protrusion 92 at the end of the flexible layer 9 is slidably connected to the inner side of the groove 91. When the two push tubes 1 shake against each other, the second support tube 4 and the first support tube 3 slide against each other. At this time, the protrusion 92 slides along the inner wall of the groove 91. The sliding pair formed by the protrusion 92 at the end of the flexible layer 9 and the groove 91 at the end of the outer wall of the first support tube 3 provides a relatively fixed and controllable movement path for the flexible layer 9. This sliding allows the flexible layer 9 to maintain its own elastic deformation while its root (connection end) can also be translated.

[0061] This allows the flexible layer 9 to more effectively follow the relative movement of the support tube, and coordinate its own elastic deformation to jointly cope with more complex and multi-dimensional external forces (such as lateral swaying or vibration accompanied by axial misalignment), thereby improving the overall adaptability of the entire compensation unit to dynamic displacement.

[0062] Please refer to Figure 5 The side wall of protrusion 92 has a triangular cross-section, and the pointed end of the triangle fits against the inner wall of groove 91.

[0063] The triangular tip is a sharp protrusion 92. During the sliding process of the protrusion 92, the sharp tip scrapes against the inner wall of the groove 91. Thus, in a high-dust environment, when dust enters the groove 91, the relative sliding between the protrusion 92 and the inner wall of the groove 91 scrapes away the dust accumulated in the groove 91.

[0064] The following description, in conjunction with the accompanying drawings and embodiments, further illustrates the long-distance transportation device for mining polymer materials provided by this utility model.

[0065] In the underground coal mine environment, multiple propulsion pipes 1 are laid parallel on the mine conveyor, and adjacent propulsion pipes 1 are connected in series by a tee 2. A first support pipe 3 is fixedly sleeved on the outer surface of each propulsion pipe 1, and a second support pipe 4 is coaxially slidably sleeved on the outside of the first support pipe 3. Coaxial corresponding discharge ports 6 are opened at the ends of the first support pipe 3 and the second support pipe 4 near the tee 2, and the two discharge ports 6 are connected in a watertight manner by a flexible hose 5.

[0066] At least two limiting grooves 41 are radially opened at the end of the second support tube 4. At the same time, a limiting protrusion 31 matching the limiting groove 41 is welded to the outer wall of the first support tube 3. The width of the limiting protrusion 31 is designed to be smaller than the width of the limiting groove 41, so that the second support tube 4 can slide axially relative to the first support tube 3 and rotate circumferentially within the inner wall range of the limiting groove 41.

[0067] When the conveyor pushes the two sets of propulsion pipes 1 forward and their speeds are not synchronized due to coal mining operations:

[0068] If the two propulsion tubes 1 are misaligned, each of the second support tubes 4 slides along the axial direction of the first support tube 3, and at the same time the flexible hose 5 undergoes elastic expansion and contraction deformation to absorb the displacement difference.

[0069] If the propulsion pipe 1 is vertically misaligned due to the undulations of the roadway, the second support pipe 4 rotates around its own axis until the side wall of the limiting groove 41 contacts the side wall of the limiting protrusion 31. At this time, the flexible hose 5 twists and deforms synchronously to compensate for the height difference.

[0070] When the second support tube 4 slides to its limit position, the baffle 42 and the retaining ring 32 rigidly abut against each other, forcibly stopping the relative displacement. At the same time, a flexible layer 9 is provided between the end of the second support tube 4 and the outer wall of the first support tube 3, and its two ends are fixedly connected to the ends of the two tubes to form a dynamic sealing cavity to reduce the outward permeation of the polymer material in the propulsion tube 1 when it enters the tee 2.

[0071] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] The foregoing has shown and described the basic principles, main features, and advantages of this disclosure. Those skilled in the art should understand that this disclosure is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this disclosure. Various changes and modifications can be made to this disclosure without departing from its spirit and scope, and all such changes and modifications fall within the scope of this disclosure as claimed.

Claims

1. A long-distance transportation device for mining polymer materials, characterized in that, include: Multiple parallel propulsion tubes (1), and multiple tees (2) connecting adjacent propulsion tubes (1); Each of the propulsion tubes (1) is fixedly sleeved with a first support tube (3), and a second support tube (4) is slidably sleeved with the outside of the first support tube (3). The first support tube (3) and the second support tube (4) have coaxially corresponding discharge ports (6) at their ends near the tee (2); The outlet (6) of the first support pipe (3) and the outlet (6) of the second support pipe (4) are connected in a watertight manner by a flexible hose (5); The second support tube (4) has a plurality of limiting grooves (41) radially opened at the end, and the outer wall of the first support tube (3) is fixed with a limiting protrusion (31) that cooperates with the limiting groove (41); The width of the limiting protrusion (31) is smaller than the width of the limiting groove (41), so that the second support tube (4) can slide axially and rotate circumferentially relative to the first support tube (3).

2. The long-distance transportation device for mining polymer materials according to claim 1, characterized in that, A valve (7) is provided on the inner side of the tee (2), and a connecting pipe (8) is detachably connected to the lower end of the tee (2).

3. The long-distance transportation device for mining polymer materials according to claim 2, characterized in that, The sidewall of the limiting protrusion (31) is arranged parallel to the central axis of the first support tube (3), and the width of the limiting protrusion (31) is smaller than the width of the limiting groove (41).

4. The long-distance transportation device for mining polymer materials according to claim 3, characterized in that, The two ends of the hose (5) are respectively watertightly connected to the inner wall of the outlet (6) of the first support pipe (3) and the inner wall of the outlet (6) of the second support pipe (4).

5. The long-distance transportation device for mining polymer materials according to claim 4, characterized in that, Both ends of the limiting protrusion (31) are fixed with retaining rings (32), and the inner side of the second support tube (4) is fixed with a baffle (42). The limiting groove (41) is set through the baffle (42), and the baffle (42) is set parallel to the end of the second support tube (4). The moving path of the first support tube (3) is between the two retaining rings (32).

6. The long-distance transportation device for mining polymer materials according to claim 5, characterized in that, The first support tube (3) has flexible layers (9) at both ends, and the flexible layers (9) are made of plastic polyurethane.

7. The long-distance transportation device for mining polymer materials according to claim 6, characterized in that, The first support tube (3) is fixedly connected to the flexible layer (9), and the end of the second support tube (4) is fixedly connected to the outer wall of the first support tube (3) with the flexible layer (9).

8. The long-distance transportation device for mining polymer materials according to claim 6, characterized in that, The first support tube (3) is slidably engaged with the flexible layer (9). A groove (91) is provided at the end of the outer wall of the first support tube (3), and a protrusion (92) is fixed at the end of the flexible layer (9). The flexible layer (9) is slidably connected to the groove (91) through the protrusion (92).

9. The long-distance transportation device for mining polymer materials according to claim 8, characterized in that, The sidewall of the protrusion (92) has a triangular cross-section, and the pointed end of the triangle is in contact with the inner wall of the groove (91).

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