A flexible sealing device for the upper part of the paste filling partition board

Abstract

A flexible sealing device for the upper part of a paste filling partition board, belonging to a comprehensive mining backfill sealing device in underground coal mines. A flexible sealing device is connected to the upper end of the partition board, and a support tail beam is located above the flexible sealing device; the flexible sealing device includes: a flexible sealing block, an isolation body, a sealing fixture, and an isolation side-pushing device; the sealing fixture is installed at the upper end of the isolation body, and a flexible sealing block is installed at the upper end of the sealing fixture; an isolation side-pushing device is arranged inside the isolation body. Advantages: The flexible sealing device has a simple structure, is wear-resistant, and durable; the vulnerable parts are modular, which is convenient for disassembly and partial replacement, greatly saving labor and reducing costs. Automatic sealing of the upper isolation is achieved, reducing manual isolation. With modular design, the severely worn seals in local areas can be replaced, saving seals and facilitating replacement. The structure is simple, and the flexible seal is easy to replace as a vulnerable part. The laterally extended flexible sealing device can move along with the lateral extension, enhancing the sealing effect at the end.

Description

Technical Field

[0001] The present invention relates to a fully-mechanized coal mining backfill sealing device underground in a coal mine, in particular to a flexible sealing device for the upper part of a paste filling isolation board. Background Art

[0002] During the paste filling in the fully-mechanized coal mining underground in a coal mine, generally an isolation board is used for isolation. The difficult problem to solve is the sealing problem between the upper part of the isolation board for paste filling isolation underground after coal mining and the mine roof. When using the isolation board to implement the isolation and sealing with the upper roof, the sealing problem between the upper end of the isolation board and the mine roof is caused by the following reasons:

[0003] 1. The gaps often generated due to the tendency of the upper roof to fall after coal mining;

[0004] 2. The gaps generated due to the unevenness of the upper wire mesh;

[0005] 3. There are often gaps between the paste filling isolation boards of the hydraulic supports;

[0006] 4. The gaps generated due to poor rigid contact sealing between the upper isolation part of the isolation board and the tail beam.

[0007] When the above problems occur, only the conventional manual isolation treatment method can be adopted after coal mining. During manual treatment, sealing materials such as wooden boards, hemp ropes, and straw curtains need to be used to seal the above gaps; during the sealing process, the isolation board needs to be continuously lifted and lowered to evenly arrange the above sealing materials in the gaps to achieve the sealing of the above gaps; lifting and lowering the isolation board back and forth not only damages the upper roof, but also is time-consuming and laborious, seriously affecting the paste filling progress of the paste filling system.

[0008] Currently, after coal mining in many coal mines, the filling volume is small, and mostly the conventional manual isolation method is adopted to achieve the sealing of the above gaps; therefore, the efficiency of paste filling during the fully-mechanized coal mining underground in a coal mine is low, seriously restricting the paste filling progress during the fully-mechanized coal mining underground in a coal mine.

[0009] In the paste filling system, a device is needed to achieve the rapid and automatic sealing of the above gaps, reduce the workload of manual treatment, and improve the paste filling efficiency; there is no sealing device on the market that can meet the requirement of sealing the above gaps by using the paste isolation board for fully-mechanized coal mining underground in a coal mine. Summary of the Invention

[0010] The purpose of the present invention is to provide a flexible sealing device for the upper part of a paste filling isolation board to solve the problem of low efficiency of paste filling during the fully-mechanized coal mining underground in a coal mine when using the conventional manual isolation method.

[0011] The object of the present invention is achieved as follows: A flexible sealing device is connected to the upper end of the isolation plate, and the support tail beam is located above the flexible sealing device; the flexible sealing device includes: a flexible sealing block, an isolation body, a sealing clamp, and an isolation side push device; the sealing clamp is installed at the upper end of the isolation body, and a flexible sealing block is installed at the upper end of the sealing clamp; an isolation side push device is arranged inside the isolation body.

[0012] The flexible sealing block is a cubic block with holes on its side surfaces and is made of an elastic non-metallic material.

[0013] The isolation body includes: a U-shaped seat, an isolation side push upper plug, an isolation side push lower plug, a pin shaft, a connecting plate, an oil cylinder connection hole, an isolation body seat, and a slideway positioning block; the upper end of the isolation body seat has a trapezoidal concave, which is adapted to the shape of the support tail beam; an isolation side push upper plug and an isolation side push lower plug are arranged on one side surface of the isolation body seat and are both fixed through the pin shaft and the U-shaped seat; a slideway positioning block is arranged on the isolation body seat between the isolation side push upper plug and the isolation side push lower plug; the slideway positioning block is a guiding and running positioning block for the side expansion device slideway; an oil cylinder connection hole is arranged at the middle position of the side surface of the isolation body seat; a connecting plate is arranged on the isolation body seat between the oil cylinder connection hole and the isolation side push lower plug to form the arrangement of the isolation body components; or, on the side surface of the isolation body seat, with the oil cylinder connection hole as the axis, the same isolation body component arrangements are provided on the isolation body seats on both sides.

[0014] The sealing clamp includes: a tightening plate, a clamp support, and a side board; the clamp support is a strip-shaped board with a trapezoidal concave, and the trapezoidal concave has the same shape as the trapezoidal concave at the upper end of the isolation body; a tightening plate is connected downward on the side surface of the clamp support, and the tightening plate is used to connect with the isolation body; a side board is connected upward on the side surface of the clamp support, a groove is formed at the upper end of the clamp support, and the flexible sealing block is placed in the groove, and the flexible sealing block is connected to the side board through bolts.

[0015] The isolation side push device includes: a side expansion sealing movable clamp and a side expansion sealing fixed clamp; the side expansion sealing movable clamp and the side expansion sealing fixed clamp are respectively connected to both ends of the isolation body.

[0016] The side expansion sealing movable clamp includes: a side expansion sealing block, an oil cylinder, an oil cylinder support frame, an isolation side push frame, a movable clamp support, and a slideway; a movable clamp support is connected to the upper end of the isolation side push frame, and a side expansion sealing block is connected to the movable clamp support; an oil cylinder support frame is arranged at the lower end of the isolation side push frame, one end of the oil cylinder is connected to the oil cylinder support frame, and the other end is connected to the oil cylinder connection hole of the isolation body; a slideway is arranged on the isolation side push frame above the oil cylinder support frame, and the position of the slideway corresponds to the slideway positioning block on the isolation body, and the slideway runs on the slideway positioning block.

[0017] Beneficial effects: Due to the adoption of the above solution, the flexible sealing block is fixed in the groove of the sealing fixture through bolts or pin shafts. The sealing fixture is fixed on the isolation body through the pressing plate and the setscrew. When the isolation body rises with the isolation plate through the oil cylinder, the trapezoidal concave part in the middle contacts and seals with the supporting tail beam, and the flexible seals at both ends contact and seal with the upper roof plate.

[0018] The sealing fixture is a welded part, contacting the isolation body at the lower part and fixed to the isolation body through the pressing plates and setscrews on both sides. There is a sealing groove with a depth of 55 mm at the upper part of the sealing fixture. The flexible sealing block is fixed in the sealing groove through bolts. When the flexible sealing block is extruded, it can be compressed by up to 40 mm, which can ensure both the elasticity and the sealing performance of the flexible sealing block.

[0019] The isolation side-pushing device is a welded part. A side telescopic sealing block is fixed through a pin shaft on the movable fixture bracket connected to the upper end of the isolation side-pushing frame. The movable fixture bracket cooperates with the isolation side-pushing frame and moves together with the telescopic movement of the oil cylinder to seal the side wall of the upper part of the isolation plate. When the isolation plate has an up-and-down misalignment due to the unevenness of the upper roof plate or the bottom plate, resulting in a gap at the end face and causing the leakage of the filling paste, the oil cylinder of the isolation side-pushing device pushes the isolation side-pushing frame, and the side telescopic part is pushed out to seal the end face gap.

[0020] Both the flexible sealing block and the side telescopic sealing block are cast from wear-resistant, flame-retardant and antistatic rubber, with bolt or pin shaft holes inside. There are also process holes on the flexible sealing block, which not only reduce the weight but also ensure the easy compressibility of the rubber.

[0021] Installing a flexible sealing device on the original isolation plate realizes the automatic and rapid sealing of the upper part of the isolation plate, reducing the transformation cost. After the hydraulic support moves into place, the isolation plate and the flexible sealing device are lifted. The flexible sealing block of the flexible sealing device contacts the tail beam of the support to achieve sealing, and the flexible seals at both ends contact the roof plate to achieve sealing, without the need for manual sealing with wooden boards and straw curtains, etc., greatly improving the isolation efficiency. The flexible sealing device has a simple structure, is strong and durable; the flexible sealing is modularly designed, which is convenient for installation and replacement. It is wear-resistant, and the vulnerable parts are modular, which is convenient for disassembly and local replacement, greatly saving labor and reducing costs.

[0022] 1. Adopting the flexible sealing device for the upper part of the bulk filling isolation plate greatly saves manpower, saves isolation materials, and greatly improves the isolation efficiency.

[0023] 2. Adopting the flexible sealing device for the upper part of the paste filling isolation plate, the flexible sealing of the side telescopic part increases with the movement, improving the sealing effect of the side telescopic part.

[0024] 3. An upper flexible sealing device for paste filling isolation board is adopted, and the isolation time of the flexible sealing device is greatly shortened, from 5 days to 1 day, which greatly improves the equipment operation rate of the filling system.

[0025] It solves the problem of low efficiency of paste filling during the fully mechanized mining process in coal mines when using the conventional manual isolation method at present, and achieves the purpose of the present invention.

[0026] Advantages: 1. An upper flexible sealing device for paste filling isolation board is adopted, which realizes the automatic sealing of the upper isolation and reduces manual isolation.

[0027] 2. An upper flexible sealing device for paste filling isolation board is adopted. The flexible seal is modularly designed, and the seals with serious local wear are replaced, which not only saves seals but also facilitates replacement.

[0028] 3. An upper flexible sealing device for paste filling isolation board is adopted, and the structure is simple. Only the flexible seal needs to be replaced as a vulnerable part.

[0029] 4. An upper flexible sealing device for paste filling isolation board is adopted. The laterally extended flexible sealing device can move along with the lateral extension, increasing the sealing effect at the end. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of the present invention.

[0031] Figure 2 It is Figure 1 a top view structural diagram of

[0032] Figure 3 It is Figure 1 a side view structural diagram of

[0033] Figure 4 It is a schematic structural diagram of the sealing clamp of the present invention.

[0034] Figure 5 It is a schematic structural diagram of the upper isolation structure of the present invention.

[0035] Figure 6 It is a combined schematic diagram of the upper isolation, clamp and flexible seal body of the present invention.

[0036] Figure 7 It is a schematic structural diagram of the side telescopic device of the support of the present invention.

[0037] In the figure, 1 is the pressing plate; 2 is the side-extending sealing movable fixture; 3 is the side-extending sealing block; 4 is the flexible sealing block; 5 is the supporting tail beam; 6 is the isolation body; 7 is the U-shaped clamping seat; 8 is the upper plug of the isolation side push; 9 is the lower plug of the isolation side push; 10 is the pin shaft; 11 is the connecting plate; 12 is the sealing fixture; 13 is the oil cylinder; 14 is the isolation side push device; 15 is the fixed fixture for side-extending sealing; 16 is the oil cylinder support frame; 17 is the isolation side push frame; 18 is the fixture support; 19 is the side wall; 20 is the oil cylinder connection hole; 21 is the isolation body seat; 22 is the movable fixture support; 23 is the slideway positioning block; 24 is the slideway. Detailed implementation mode

[0038] The following further describes the implementation mode of the present invention in conjunction with the attached drawings.

[0039] Embodiment 1: A flexible sealing device is connected to the upper end of the isolation plate, and the supporting tail beam 5 is located above the flexible sealing device;

[0040] The flexible sealing device includes: a flexible sealing block 4, an isolation body 6, a sealing fixture 12 and an isolation side push device 14;

[0041] The sealing fixture 12 is installed at the upper end of the isolation body 6, and a flexible sealing block 4 is installed at the upper end of the sealing fixture 12; an isolation side push device 14 is arranged inside the isolation body 6.

[0042] The flexible sealing block 4 is a cubic block with holes on the side surface, and is made of elastic non-metallic material.

[0043] The isolation body 6 includes: a U-shaped clamping seat 7, an upper plug 8 of the isolation side push, a lower plug 9 of the isolation side push, a pin shaft 10, a connecting plate 11, an oil cylinder connection hole 20, an isolation body seat 21 and a slideway positioning block 23; there is a trapezoidal concave at the upper end of the isolation body seat 21, and the trapezoidal concave is adapted to the shape of the supporting tail beam 5; an upper plug 8 of the isolation side push and a lower plug 9 of the isolation side push are arranged on one side surface of the isolation body seat 21, and are both fixed through the pin shaft 10 and the U-shaped clamping seat 7; a slideway positioning block 23 is arranged on the isolation body seat 21 between the upper plug 8 of the isolation side push and the lower plug 9 of the isolation side push; the slideway positioning block 23 is a guiding and running positioning block for the slideway 24 of the side-extending sealing movable fixture 2; an oil cylinder connection hole 20 is arranged at the middle position of the side surface of the isolation body seat 21; a connecting plate 11 is arranged on the isolation body seat 21 between the oil cylinder connection hole 20 and the lower plug 9 of the isolation side push, forming the arrangement of the isolation body components; or, on the side surface of the isolation body seat 21, with the oil cylinder connection hole 20 as the axis, the same arrangement of the isolation body components is arranged on the isolation body seats 21 on both sides.

[0044] The described sealing fixture 12 includes: a tightening plate 1, a fixture bracket 18, and a side panel 19; the fixture bracket 18 is a trapezoidal concave slat, and the trapezoidal concave shape is the same as that of the upper end of the isolation body 6; a tightening plate 1 is connected downward on the side of the fixture bracket 18, and the tightening plate 1 is used to connect with the isolation body 6; a side panel 19 is connected upward on the side of the fixture bracket 18, a groove is formed at the upper end of the fixture bracket 18, a flexible sealing block 4 is placed in the groove, and the flexible sealing block 4 is connected to the side panel 19 by bolts.

[0045] The described isolation side-pushing device 14 includes: a side-extending sealing movable fixture 2 and a side-extending sealing fixed fixture 15; the side-extending sealing movable fixture 2 and the side-extending sealing fixed fixture 15 are respectively connected to both ends of the isolation body 6.

[0046] The described side-extending sealing movable fixture 2 includes: a side-extending and retracting sealing block 3, an oil cylinder 13, an oil cylinder support frame 16, an isolation side-pushing frame 17, a movable fixture bracket 22, and a slideway 24; a movable fixture bracket 22 is connected to the upper end of the isolation side-pushing frame 17, and a side-extending and retracting sealing block 3 is connected to the movable fixture bracket 22; an oil cylinder support frame 16 is provided at the lower end of the isolation side-pushing frame 17, one end of the oil cylinder 13 is connected to the oil cylinder support frame 16, and the other end is connected to the oil cylinder connection hole 20 of the isolation body 6; a slideway 24 is provided on the isolation side-pushing frame 17 above the oil cylinder support frame 16, and the position of the slideway 24 corresponds to the slideway positioning block 23 on the isolation body 6, and the slideway 24 runs on the slideway positioning block 23.

[0047] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly describe the drawings required for use in the description of the present invention or the prior art. Obviously, the following-described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0048] As Figure 1 、 Figure 2 and Figure 3 schematically shows the structural form of the upper flexible sealing device of the paste filling isolation board. The flexible sealing block is assembled with the sealing fixture by bolts. The flexible sealing groove protrudes 40 mm. When tightened, the maximum compression amount of the flexible sealing is 40 mm. The sealing groove space is sufficient for the compression space of the flexible sealing body. Tighten the top screw on the sealing fixture to avoid loosening. There are guide blocks on both sides of the side extension and retraction, which play a guiding role when the oil cylinder extends and retracts.

[0049] Figure 4 schematically shows the structural form of the sealing fixture. There is a baffle on one side of the sealing fixture and a tightening plate on the other side. There is a certain gap in width to avoid installation difficulties caused by welding and processing errors. After installation, tighten it with bolts, and at the same time tighten the locknut to prevent loosening.

[0050] Figure 7 It shows the connection method of the side telescopic part and the side telescopic seal box oil cylinder. When the end gap is large, the oil cylinder is used to push out the side telescopic part together with the side telescopic seal to seal the end.

Claims

1. A flexible sealing device for the upper part of a paste filling isolation board. A flexible sealing device is connected to the upper end of the isolation board, and the support tail beam is located above the flexible sealing device. Its characteristics are: The flexible sealing device includes: a flexible sealing block, an isolation body, a sealing fixture, and an isolation side pushing device; the sealing fixture is installed at the upper end of the isolation body, and a flexible sealing block is installed at the upper end of the sealing fixture; an isolation side pushing device is arranged inside the isolation body. The flexible sealing block is a cubic block with holes on its side and is made of elastic non-metallic material. The flexible sealing block is fixed in the groove of the sealing fixture through bolts or pins. The sealing fixture is fixed on the isolation body through a pressing plate and a setscrew. When the isolation body rises with the isolation board through the oil cylinder, the middle trapezoidal concave part contacts and seals with the support tail beam, and the flexible seals at both ends contact and seal with the upper roof. The isolation body includes: a U-shaped seat, an isolation side pushing device, a pin, a connecting plate, an oil cylinder connection hole, an isolation body seat, and a slideway positioning block; there is a trapezoidal concave at the upper end of the isolation body seat, and the trapezoidal concave is adapted to the shape of the support tail beam; an isolation side pushing device is connected to the side of one end of the isolation body seat and is connected to the oil cylinder, and the upper and lower plugs are telescoped at the other end side and are fixed through pins and U-shaped seats; there is a slideway positioning block in the middle of the isolation side pushing device; the slideway positioning block is a guiding and running positioning block for the slideway of the side-extended sealing movable fixture; there is an oil cylinder connection hole at the middle position of the side of the isolation body seat; there is a connecting plate on the isolation body seat between the oil cylinder connection hole and the lower plug of the isolation side push, forming the arrangement of the isolation body components; or, on the side of the isolation body seat, with the oil cylinder connection hole as the axis, there are the same arrangements of the isolation body components on the isolation body seats on both sides. The sealing fixture includes: a pressing plate, a fixture bracket, and a side panel; the fixture bracket is a strip with a trapezoidal concave, and the trapezoidal concave has the same shape as the trapezoidal concave at the upper end of the isolation body; a pressing plate is connected downward on the side of the fixture bracket for connecting with the isolation body; a side panel is connected upward on the side of the fixture bracket, forming a groove at the upper end of the fixture bracket, and the flexible sealing block is placed in the groove, and the flexible sealing block is connected to the side panel through bolts. The lower part of the sealing fixture contacts the isolation body and is fixed to the isolation body through the pressing plates on both sides and setscrews. There is a sealing groove with a depth of 55 mm at the upper part of the sealing fixture, and the flexible sealing block is fixed in the sealing groove through bolts. When the flexible sealing block is squeezed, it can be compressed by up to 40 mm, which can ensure both the elasticity and the sealing performance of the flexible sealing block. The isolation side pushing device includes: a side-extended sealing movable fixture and a side-extended sealing fixed fixture; the side-extended sealing movable fixture and the side-extended sealing fixed fixture are respectively connected to both ends of the isolation body. The isolation side pushing device is connected to the movable fixture bracket at the upper end of the isolation side pushing frame. A side-extended sealing block is fixed through a pin on the movable fixture bracket. The movable fixture bracket cooperates with the isolation side pushing frame and moves together with the telescoping of the oil cylinder to seal the side panel of the upper part of the isolation board; when the isolation board has an up-and-down dislocation due to the unevenness of the upper or lower plates, resulting in a gap at the end face and causing the leakage of the filling paste, the oil cylinder of the isolation side pushing device pushes the isolation side pushing frame, and the side extension is pushed out to seal the end face gap.

2. The upper flexible sealing device for the paste filling isolation board according to claim 1, characterized in that: The side-extending sealing movable fixture includes: a side telescopic sealing block, an oil cylinder, an oil cylinder support frame, an isolation side push frame, a movable fixture support frame and a slideway; a movable fixture support frame is connected to the upper end of the isolation side push frame, and a side telescopic sealing block is connected to the movable fixture support frame; an oil cylinder support frame is provided at the lower end of the isolation side push frame, one end of the oil cylinder is connected to the oil cylinder support frame, and the other end is connected to the oil cylinder connection hole on the isolation body; a slideway is provided on the isolation side push frame above the oil cylinder support frame, and the position of the slideway corresponds to the slideway positioning block on the isolation body, and the slideway runs on the slideway positioning block.

Images