Radial non-coupling continuous charging spacer

Abstract

The utility model discloses a radial non-coupling continuous charging blasting spacer which comprises a pipe body, an explosive receiver, a connector, a base and a sealing ring. The explosive receiver is of a big-end-up horn mouth structure, the upper outer edge of the explosive receiver is attached to the wall of the blast hole, and the lower portion of the explosive receiver is connected with the connector. The pipe body, the explosive receiver, the connector and the base are connected from top to bottom to form a continuous charging section of a hollow structure. The pipe body, the explosive receiver, the connector and the base are connected from top to bottom to form the continuous charging section with the hollow structure, and explosive cannot flow into the cavity by combining the explosive receiver, the base and the sealing ring, so that the effects of axial continuous charging and radial non-coupling are achieved, the phenomenon that the blasting lumpiness of an existing spacer is not uniform is solved, and the service life of the spacer is prolonged. And production requirements are difficult to meet.

Description

Technical Field

[0001] This utility model relates to the field of blasting technology, and in particular to a radially uncoupled continuous charge spacer. Background Technology

[0002] The widespread use of mixed emulsion explosives in mining operations has brought about groundbreaking changes, but it also presents significant challenges. For example, mixed emulsion explosives in areas with well-developed joints and fissures are prone to leakage along these fissures. Furthermore, due to their coupled nature, compared to pre-mixed emulsion explosives under the same borehole diameter conditions, they exhibit higher energy consumption, greater vibration, and a higher rate of ore powder. In open-pit bench deep-hole blasting, different blasting effects affect both excavation and loading efficiency and the yield of finished ore, making blasting costs difficult to control. To save on blasting costs, the industry currently primarily employs two methods: rock dust separation and air separation, to reduce the amount of explosive used.

[0003] Chinese patent CN118347372A discloses a deep-hole pre-splitting blasting circumferential decoupled device, which includes explosives, annular air spacers, detonators (detonating cords), shaped charge holes, and plugging materials. During blasting operations, the annular air spacers are spaced around the explosive charge. After the annular air spacers are inflated, they are fixed to position the explosive at the center of the borehole, thus obtaining a pre-splitting blasting charge structure.

[0004] However, when the above solution is applied to hard rock, uneven blasting block size is likely to occur in the interval section, which is difficult to meet production requirements. In order to solve the above problem, it is urgent to design a radially uncoupled continuous charge interval. Utility Model Content

[0005] The purpose of this invention is to provide a radially uncoupled continuous charge spacer, which can not only reduce the cost of mine blasting, but also improve the unevenness of blasting block size, reduce the vibration damage effect of blasting on surrounding buildings and the loss of explosives, so as to maximize the efficiency of excavation and loading and the benefits of ore production.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a radially uncoupled continuous charge spacer, including a tube body, an explosive receiver, a connector, a base, and a sealing ring;

[0008] The tube, explosive receiver, connector, and base are connected from top to bottom to form a continuous charge section with a hollow structure.

[0009] Preferably, the tube body is a cylindrical hollow structure with a diameter smaller than the borehole diameter, and a cavity is formed between the outer wall of the tube body and the inner wall of the borehole.

[0010] The explosive receiver has a flared structure that is wider at the top and narrower at the bottom. Its upper outer edge fits against the wall of the borehole, and its lower part is connected to the connector.

[0011] Preferably, the pipe body has an exhaust hole on its side wall, and the exhaust hole is configured as a mesh structure.

[0012] Preferably, the inner wall of the tube is provided with energy-concentrating grooves in multiple directions.

[0013] Preferably, both ends of the tube are provided with connector threads, and the tube is connected to the connector and the base through the connector threads.

[0014] Preferably, the upper end of the connector is provided with a reducing joint, which is connected to the lower part of the explosive receiver.

[0015] Preferably, the lower inner wall of the connector has a connector thread, which is connected to the joint thread at the upper end of the tube.

[0016] Preferably, the upper inner side of the base is provided with a base thread, and the base thread is connected to the connector thread at the lower end of the tube.

[0017] Preferably, the lower end of the base is provided with a fixing groove, which is used to fix the sealing ring.

[0018] Preferably, the explosive receiver and the sealing ring are made of elastic material.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. This utility model sets the tube body as a cylindrical hollow structure with a diameter smaller than the borehole diameter. A cavity is formed between the outer wall of the tube body and the inner wall of the borehole. The explosive receiver is set as a flared structure with a larger upper part and a smaller lower part. Its upper outer edge fits against the borehole wall, and its lower part is connected to the connector. This allows the explosive to flow smoothly through the continuous charging section without entering the cavity. This achieves axial continuous charging and radial decoupling, reduces the direct impact of explosive energy on the borehole wall, mitigates the vibration damage to surrounding buildings caused by blasting, and reduces explosive loss. This improves excavation efficiency and maximizes ore production benefits.

[0021] 2. This utility model connects the tube body, explosive receiver, connector, and base from top to bottom to form a continuous charging section with a hollow structure. The tube body has an exhaust hole on its side wall to smoothly discharge the air inside the tube body, effectively ensuring the continuity of the charging, allowing the upper and lower explosives to make smooth contact, preventing local misfires, and ensuring that the explosives in the spacer are continuously charged.

[0022] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This diagram shows an overall structural schematic of a radially uncoupled continuous charge spacer according to an embodiment of the present invention.

[0025] Figure 2 This diagram shows a schematic diagram of the tube structure of a radially uncoupled continuous charge spacer according to an embodiment of the present invention;

[0026] Figure 3 This diagram shows a schematic of the explosive receiver structure of a radially uncoupled continuous charge spacer according to an embodiment of the present invention;

[0027] Figure 4 This diagram shows a connector structure of a radially uncoupled continuous charge spacer according to an embodiment of the present invention.

[0028] Figure 5 A schematic diagram of the base structure of a radially uncoupled continuous charge spacer according to an embodiment of the present invention is shown.

[0029] In the diagram: 1. Tube body; 2. Explosive receiver; 3. Connector; 4. Base; 5. Sealing ring; 6. Vent hole; 7. Energy-concentrating groove; 8. Connector thread; 9. Connector thread; 10. Reducing connector; 13. Continuous charging section; 14. Cavity. Detailed Implementation

[0030] 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 protection scope of the present utility model.

[0031] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0032] like Figure 1-5 As shown, this utility model provides a radially uncoupled continuous charge spacer, including a tube body 1, an explosive receiver 2, a connector 3, a base 4, and a sealing ring 5; the tube body 1, the explosive receiver 2, the connector 3, and the base 4 are connected from top to bottom to form a continuous charge section 13 with a hollow structure; the continuous charge section 13 is set as a continuous hollow structure, which can make smooth contact between the upper and lower explosives, prevent local misfires, and ensure that the explosives in the spacer are continuously charged. At the same time, compared with the traditional segmented spacer, the continuous charge design in this application can complete the full-hole charge using a single detonator, reducing the number of detonators used and reducing the cost of mining blasting.

[0033] Preferably, the tube body 1 is a cylindrical hollow structure with a diameter smaller than that of the borehole, serving as a weakening section for the entire borehole charge. A cavity 14 is formed between the outer wall of the tube body 1 and the inner wall of the borehole. No explosives are placed in the cavity 14. This cavity is mainly used to reduce the direct impact of explosive energy on the borehole wall, thereby reducing the diameter of the pulverization ring caused by blasting and preventing explosives from leaking along the cracks, thus reducing the cost of mine blasting.

[0034] Preferably, the explosive receiver 2 has a flared structure that is wider at the top and narrower at the bottom. Its upper outer edge fits against the borehole wall, and its lower part is connected to the connector 3. The upper edge of the explosive receiver 2 can fit tightly against the borehole wall, so that the explosive can flow smoothly through the continuous charging section 13 and will not enter the cavity 14. This achieves the effect of axial continuous charging and radial decoupling, reduces the direct impact of explosive energy on the borehole wall, and reduces the vibration and damage effect of blasting on surrounding buildings.

[0035] Preferably, the tube body 1 is provided with an exhaust hole 6 on its side wall. The exhaust hole 6 is configured with a mesh structure, which is mainly used to smoothly discharge the air in the tube body 1 during the loading process, effectively ensuring the continuity of loading, and the mesh structure can prevent the explosive from flowing out from the exhaust hole 6.

[0036] Preferably, the inner wall of the tube body 1 is provided with energy-concentrating grooves 7 in multiple directions. Similar to the slotted tube, energy is concentrated here at the moment of the explosive explosion, forming cracks first, which facilitates the wedging of the explosive gas into the broken rock and effectively improves the problem of uneven blasting block size.

[0037] Preferably, both ends of the tube body 1 are provided with connector threads 8, and the tube body 1 is connected to the connector 3 and the base 4 through the connector threads 8.

[0038] Preferably, the upper end of the connector 3 is provided with a reducing joint 10, which is connected to the lower part of the explosive receiver 2 and can support the weight of the explosive and the blocking section in the upper part of the explosive receiver 2. The lower end of the connector 3 has a connector thread 9 on its inner wall, which is connected to the connector thread 8 at the upper end of the tube body 1.

[0039] Specifically, there are multiple ways to connect the reducing connector 10 to the explosive receiver 2. For example, the reducing connector 10 is located at the upper end of the connector 3, and its upper diameter is larger than the diameter of the main body of the connector 3. The diameter gradually decreases to form a stepped transition structure. The explosive receiver 2 has a flared structure that is larger at the top and smaller at the bottom. The reducing connector 10 matches the small flared diameter at the lower end of the explosive receiver 2 through the stepped structure with varying diameter, ensuring the sealing line and stability. Alternatively, an external thread or groove can be provided at the upper end of the reducing connector 10, and a corresponding internal thread or groove can be provided at the lower end of the explosive receiver 2 to achieve connection between the two.

[0040] Preferably, the upper inner side of the base 4 is provided with a base thread, which is connected to the connector thread 8 at the lower end of the tube body 1. The lower end of the base 4 is provided with a fixing groove, which is used to fix the sealing ring 5.

[0041] Preferably, both the explosive receiver 2 and the sealing ring 5 are made of elastic material. The elastic material of the explosive receiver 2 can support the weight of the upper explosive and the blocking section without damaging the detonator lead wire between it and the borehole wall. The sealing ring 5 is also made of elastic material. After it is installed on the base 4, it can effectively support the spacer above the lower explosive, so that the entire device will not sink into the explosive. At the same time, the lower explosive will not be squeezed into the cavity 14, thus reducing the energy of the detonation directly acting on the borehole wall and reducing the range of the crushing ring. Since the material of the sealing ring 5 has a certain elasticity and plasticity, the explosive receiver 2 will not damage the detonator lead wire between it and the borehole wall.

[0042] The working principle of this utility model is as follows:

[0043] This invention connects the tube body 1, explosive receiver 2, connector 3, and base 4 from top to bottom to form a continuous charging section 13 with a hollow structure. The tube body 1 is equipped with mesh-like vent holes 6, effectively ensuring the continuity of the charging. The diameter of the charging tube body 1 is smaller than the borehole diameter, serving as a weakening section for the entire borehole charging process. A cavity 14 is formed between the outer wall of the tube body 1 and the inner wall of the borehole. Due to the action of the explosive receiver 2 and the sealing ring 5, explosive will not flow into the cavity 14, thus reducing the energy of the detonation directly acting on the borehole wall and reducing the area of ​​the fragmentation zone. Simultaneously, the inner wall of the tube body 1 has energy-concentrating grooves 7 in different directions, where energy is concentrated at the moment of explosive detonation. The design first forms cracks, facilitating the wedging of explosive gas into the broken rock. Simultaneously, the explosive receiver 2 and sealing ring 5 are made of materials with a certain degree of elasticity and plasticity, thus preventing damage to the detonator leads between the spacer and the borehole wall. Furthermore, the entire spacer allows for continuous loading, meaning only one detonator is needed to complete the blasting operation for each borehole. In addition, the close connection between the various components of the spacer makes operation simple and convenient. Through the above structural design, this invention effectively reduces mining blasting costs and improves issues such as uneven blasting block size, reduced vibration damage to surrounding buildings, and explosive loss, thereby maximizing excavation efficiency and ore production benefits.

[0044] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A radially uncoupled continuous charge spacer, characterized by, Includes tube body (1), explosive receiver (2), connector (3), base (4), and sealing ring (5); The tube (1), explosive receiver (2), connector (3), and base (4) are connected from top to bottom to form a continuous charge section (13) with a hollow structure; The tube (1) is a cylindrical hollow structure with a diameter smaller than that of the borehole. A cavity (14) is formed between the outer wall of the tube (1) and the inner wall of the borehole.

2. A radially uncoupled sequential charge spacer according to claim 1 wherein, The explosive receiver (2) has a flared structure that is larger at the top and smaller at the bottom. Its upper outer edge fits against the wall of the blast hole, and its lower part is connected to the connector (3).

3. A radial uncoupling continuous charge spacer according to claim 1 wherein, The tube body (1) has an exhaust hole (6) on its side wall, and the exhaust hole (6) is configured as a mesh structure.

4. A radially uncoupled sequential charge spacer according to claim 1 wherein, The inner wall of the tube (1) is provided with energy-concentrating grooves (7) in multiple directions.

5. A radially uncoupled sequential charge spacer according to claim 1 wherein, The two ends of the tube (1) are provided with connector threads (8), and the tube (1) is connected to the connector (3) and the base (4) through the connector threads (8).

6. A radially uncoupled sequential charge spacer according to claim 1 wherein, The upper end of the connector (3) is provided with a reducing joint (10), which is connected to the lower part of the explosive receiver (2).

7. A radially uncoupled sequential charge spacer according to claim 5 wherein, The lower inner wall of the connector (3) has a connector thread (9), which is connected to the connector thread (8) at the upper end of the tube body (1).

8. A radially uncoupled sequential charge spacer according to claim 5 wherein, The upper inner side of the base (4) is provided with a base thread, which is connected to the connector thread (8) at the lower end of the tube body (1).

9. A radially uncoupled sequential charge spacer according to claim 1 wherein, The base (4) has a fixing groove at its lower end, which is used to fix the sealing ring (5).

10. A radially uncoupled sequential charge spacer according to claim 1 wherein, The explosive receiver (2) and the sealing ring (5) are made of elastic material.

Images