Section type external expansion mine blast hole temporary plugging device

Abstract

The utility model provides a sectioning type external expansion mine blast hole temporary plugging device, and belongs to the technical field of mine blasting construction. Comprising an arc-shaped plugging device, a screw jacking device and a sealing rubber sheet, the arc-shaped plugging device is composed of sectioning pieces, a sealing plate and a pull ring, the sectioning pieces are distributed in a conical shape and fixed to the sealing plate, and the pull ring is arranged on the sealing plate; the screw jacking device is composed of a screw fixing plate, a jacking plate and a jacking screw, the screw fixing plate is provided with a threaded hole matched with the jacking screw, the two ends of the screw fixing plate are fixed to the sealing plate in the middle, the jacking plate is fixedly connected with the jacking screw, the jacking screw pushes the jacking plate to move towards the necking ends of the sectioning pieces distributed in a conical shape, and the sectioning pieces are fixed to the sealing plate. The sectioning sheets are extruded to expand and expand outwards; and the sealing rubber sheets are tightly attached to the outer surfaces of the sectioning sheets. By means of the split type external expansion structure, quick plugging of blast holes of multiple sizes is achieved, the structure is simple, operation is convenient and fast, and sealing performance is good.

Description

Technical Field

[0001] This utility model belongs to the field of mining blasting construction technology, specifically relating to a segmented, outward-expanding temporary sealing device for mining blast holes, which is suitable for temporary sealing operations in mining, tunnel and other scenarios. Background Technology

[0002] Mining blasting technology is a construction method that uses explosives to blast rock masses to create transport tunnels and work areas. Its purpose is to achieve precise and smooth blasting of the rock mass. This technology is widely used in open-pit, metal and non-metal mine construction, underground tunnel excavation, copper chamber construction, and other construction areas, and is a key technical link in mine construction and mining. In mining blasting, drilling is required, and explosives are then filled into the holes. Traditional drilling methods, due to the working environment, often result in the boreholes becoming clogged with debris, requiring secondary cleaning before refilling with explosives, thus affecting construction efficiency.

[0003] In traditional construction, rubber hoses and PVC pipes are used to temporarily seal blast holes. However, these materials are prone to detachment, damage, and difficulty in removal during construction, leading to sealing failure and affecting sealing efficiency. Furthermore, the size of blast holes can deviate due to vibrations from construction machinery, making it cumbersome to use the aforementioned sealing materials for blast holes of different sizes. This necessitates the use of rubber hoses and PVC pipes of varying diameters, further impacting sealing efficiency. Therefore, there is an urgent need to design a temporary blast hole sealing device applicable to mines of various sizes. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a segmented external expansion temporary sealing device for mine blast holes. The purpose of this utility model is to solve the problems in the prior art. Through the segmented external expansion structure, it can quickly seal blast holes of various sizes. The structure is simple, the operation is convenient, and the sealing performance is good.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] The segmented external expansion mine blast hole temporary sealing device includes an arc sealing device, a screw jacking device, and a sealing rubber sheet;

[0007] The arc-shaped sealing device consists of a segmented plate, a sealing plate, and a pull ring. The segmented plate is distributed in a conical shape and fixed on the sealing plate, and the sealing plate is provided with a pull ring.

[0008] The screw jacking device consists of a screw fixing plate, a jacking plate, and a jacking screw. The screw fixing plate is provided with threaded holes that match the jacking screw. The two ends of the screw fixing plate are fixed to the sealing plate in the middle. The jacking plate and the jacking screw are fixedly connected. The jacking screw pushes the jacking plate to move towards the constricted end of the cone-shaped segmented pieces, causing the segmented pieces to be squeezed and expand outward.

[0009] The sealing rubber sheet is tightly attached to the outer surface of the segmented sheet.

[0010] Further defining the above scheme, the single-piece segmented plate has an arc-shaped fan-shaped structure and is made of thin steel plate. The segmented plate consists of 6-8 pieces forming a conical distribution structure, and when not expanded, the whole is in a conical closed shape.

[0011] As a further limitation of the above scheme, the top of the jacking screw is provided with a T-shaped crossbar.

[0012] As a further limitation of the above scheme, the two ends of the screw fixing plate are fixed to the sealing plate in the middle by fixing bolts.

[0013] As a further limitation of the above scheme, the pull ring is fixed to the sealing plate by pull ring bolts.

[0014] As a further limitation of the above scheme, the jacking plate and the jacking screw are connected by welding or bolts.

[0015] Advantages of this utility model compared to the prior art:

[0016] 1. This solution uses the screw jacking action to make the segmented pieces expand outward, achieving reliable sealing of the blast hole. It solves the problem that traditional sealing devices are troublesome for temporary sealing of blast holes of different diameters, requiring the use of sealing devices of corresponding diameters for sealing operations, which affects construction efficiency. The structure is simple and reasonable, and the operation is convenient.

[0017] 2. This solution uses a sealing rubber sheet in addition to the conical segmented plate structure, which improves the sealing performance of the seal. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model after the sealing rubber sheet has been removed;

[0020] Figure 3 This is a front view of the structure of this utility model;

[0021] Figure 4 This is a side view of the present invention. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] Please see Figure 1-4 The embodiments of this utility model are described in detail below.

[0026] Example: A segmented, externally expanding temporary sealing device for mine blast holes includes an arc-shaped sealing device 1, a screw jacking device 2, and a sealing rubber sheet 3. The arc-shaped sealing device 1 consists of segmented pieces 12, a sealing plate 11, and a pull ring 13. The segmented pieces 12 are conically distributed and fixed on the sealing plate 11, and the sealing plate 11 is provided with a pull ring 13. The screw jacking device 2 consists of a screw fixing plate 21, a jacking plate 22, and a jacking screw 23. The screw fixing plate 21 is provided with... The threaded hole is matched with the jacking screw 23. The screw fixing plate 21 is fixed to the sealing plate 11 at both ends. The jacking plate 22 is fixedly connected to the jacking screw 23. The jacking screw 23 pushes the jacking plate 22 to move towards the constricted end of the cone-shaped segmented pieces 12, so that the segmented pieces 12 are squeezed and expand outward to achieve the sealing effect. The sealing rubber sheet 3 is tightly attached to the outer surface of the segmented pieces 12, and fits tightly with the blast hole to improve the sealing performance.

[0027] In one specific embodiment, the single segmented piece 12 has an arc-shaped fan-shaped structure and is made of thin steel plate. The segmented piece 12 is generally arranged in 6-8 pieces to form a conical distribution structure. When it is not expanded, the whole is in a conical closed shape.

[0028] In one specific embodiment, the top of the jacking screw 23 is provided with a T-shaped crossbar to facilitate the rotational drive of the jacking screw. This structure pushes the jacking plate 22 inward by rotation, and the threaded connection has self-locking properties, which can improve the stability of the jacking plate 22 during jacking.

[0029] In one specific embodiment, the two ends of the screw fixing plate 21 are centrally fixed to the sealing plate 11 by fixing bolts 24.

[0030] In one specific embodiment, the pull ring 13 is made of bent steel bars with matching threads at both ends. It is fixed to the sealing plate 11 by pull ring bolts 14 and can be disassembled at any time, which facilitates the deployment and removal of the device.

[0031] In one specific embodiment, the jacking plate 22 and the jacking screw 23 are connected by welding or bolts.

[0032] The working principle of this sealing device:

[0033] 1. Insert the device into the borehole. In the initial state, the split plate 12 is in a conical closed shape.

[0034] 2. Rotate the jacking screw 23 to push the jacking plate 22 towards the constricted end of the segmented piece 12;

[0035] 3. The split piece 12 expands outward under pressure and fits tightly against the borehole wall, while the sealing rubber piece 3 further fills the gaps and enhances the sealing performance;

[0036] 4. After sealing is completed, rotate the push screw 23 in the opposite direction to retract the split plate 12, and remove the device through the pull ring 13.

[0037] This invention achieves multi-size borehole sealing by expanding the segmented plates, solving the problems of traditional sealing devices. It has a simple structure, is easy to operate, and has good sealing performance.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A segmented, externally expanding temporary sealing device for mine blast holes, characterized in that: It includes an arc-shaped sealing device (1), a screw jacking device (2), and a sealing rubber sheet (3); The arc-shaped sealing device (1) consists of a split piece (12), a sealing plate (11) and a pull ring (13). The split piece (12) is distributed in a cone shape and fixed on the sealing plate (11). The sealing plate (11) is provided with a pull ring (13). The screw jacking device (2) consists of a screw fixing plate (21), a jacking plate (22) and a jacking screw (23). The screw fixing plate (21) is provided with threaded holes that match the jacking screw (23). The two ends of the screw fixing plate (21) are fixed to the sealing plate (11) in the middle. The jacking plate (22) is fixedly connected to the jacking screw (23). The jacking screw (23) pushes the jacking plate (22) to move towards the constricted end of the cone-shaped segmented pieces (12), causing the segmented pieces (12) to be squeezed and expand outward. The sealing rubber sheet (3) is tightly attached to the outer surface of the split sheet (12).

2. The segmented, externally expanded temporary sealing device for mine blast holes according to claim 1, characterized in that: The single-piece segmented piece (12) has an arc-shaped fan-shaped structure and is made of thin steel plate. The segmented piece (12) consists of 6-8 pieces forming a conical distribution structure. When it is not expanded, the whole piece is in a conical closed shape.

3. The segmented, externally expanded temporary sealing device for mine blast holes according to claim 1, characterized in that: The top of the jacking screw (23) is provided with a T-shaped crossbar.

4. The segmented, externally expanded temporary sealing device for mine blast holes according to claim 1, characterized in that: The screw fixing plate (21) is fixed to the sealing plate (11) at both ends by fixing bolts (24).

5. The segmented, externally expanded temporary sealing device for mine blast holes according to claim 1, characterized in that: The pull ring (13) is made of bent steel bars and is fixed to the sealing plate (11) by pull ring bolts (14).

6. The segmented, externally expanded temporary sealing device for mine blast holes according to claim 1, characterized in that: The jacking plate (22) and the jacking screw (23) are connected by welding or bolts.

Images