Pre-splitting blasting charging device for water-rich rock surface mine

Abstract

The utility model relates to the field of mining, in particular to a water-rich rock surface mine presplitting blasting charging device. A quick release structure is arranged between the lower end of an auxiliary charging pipe and the upper end of a PVC (polyvinyl chloride) pipe; the quick release structure comprises a connecting pipe fixedly installed at the upper end of the PVC pipe, a tubular quick release plug used for being disassembled into the connecting pipe is fixedly installed at the lower end of the auxiliary charging pipe, an elastic plate extending downwards is fixedly installed at the lower end of the quick release plug, and a clamping block is arranged on the side, close to the inner wall of the connecting pipe, of the elastic plate. A fixing groove for clamping the clamping block is formed in the connecting pipe; the PVC pipe and the auxiliary charging pipe are assembled, the PVC pipe is charged with powder through the pipe opening in the upper end of the auxiliary charging pipe, and the charging efficiency is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mine exploitation, concretely relates to a water-rich rock open pit mine presplitting blasting charging device. BACKGROUND

[0002] Open blasting is one of the commonly used rock breaking techniques in mine exploitation, and is particularly suitable for the preliminary exploitation of large-scale mines. However, one of the main challenges facing open blasting is the complexity of geological conditions, especially in the exploitation environment of water-rich rocks. The difference in water content of the rocks can lead to unstable blasting effects. Water-rich rocks refer to rocks with high water content, which have a significant impact on blasting operations. The presence of water in rocks can change their mechanical properties, such as strength, hardness, and brittleness. Therefore, the presence of water can inhibit the blasting effect, making the rock fragments after blasting unable to form in the expected form, and even may lead to unsatisfactory blasting results and poor breaking effect. To address this issue, PVC pipes are currently used for charging in the field, which can achieve radial uncoupling charging in presplitting blasting and maximize the isolation of water in water holes in water-rich rocks, thereby reducing the impact of water on blasting effects.

[0003] Existing mine presplitting blasting devices, such as the utility model patent with application number CN202021722697.0, disclose a presplitting blasting device, mainly including a PVC pipe, rock explosives filled inside the PVC pipe, and an initiating detonator pre-buried inside the rock explosives. However, as open blasting operations gradually develop towards medium-depth hole blasting, the existing mine presplitting blasting device charging has certain difficulties, which directly affects the blasting quality and efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a water-rich rock open pit mine presplitting blasting charging device that can effectively improve the efficiency of on-site charging and the effect of blasting to solve the defects raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a kind of water-rich rock open-pit mine pre-splitting blasting charging device, including PVC pipe and auxiliary charging pipe, quick release structure is equipped between the lower end of the auxiliary charging pipe and the upper end of the PVC pipe;The quick release structure includes the connecting pipe fixedly installed in the upper end of the PVC pipe, the lower end of the auxiliary charging pipe is fixedly installed with the tubular quick release plug for being detached into the connecting pipe, the lower end of the quick release plug is fixedly installed with the elastic plate extending downward, the side close to the connecting pipe inner wall of the elastic plate is equipped with the clamping block, the connecting pipe is equipped with the fixed groove for the clamping block to be clamped into;The clamping block is triangular, the side away from the elastic plate of the clamping block is equipped with the guide inclined plane, the upper end of the connecting pipe or the bottom wall of the fixed groove acts on the guide inclined plane and pushes the elastic plate to bend inward when the clamping block moves downward;The top of the clamping block is equipped with the limiting surface, and the limiting surface cooperates with the top wall of the fixed groove and limits the clamping block to be separated upward from the fixed groove.

[0007] As a further improvement, an exit groove is provided on the inner wall of the connecting pipe, which matches the clamping block, and the upper end of the exit groove extends to the top of the connecting pipe.

[0008] As a further improvement, the inner wall of the connecting pipe below the quick release plug is provided with an annular protrusion, the top of the protrusion is provided with a guide groove, the bottom wall of the guide groove is provided with a helically rising or descending guide surface, and the lower end of the quick release plug is fixedly installed with a downward extending support portion, when the clamping block is clamped into the fixed groove, the projection of the support portion in the vertical direction is located on the guide surface.

[0009] As a further improvement, a limiting portion is provided on the outer wall of the quick release plug in the form of an annular protrusion, a push plate is vertically slidingly installed on the quick release plug below the limiting portion, and an elastic member is provided between the push plate and the limiting portion.

[0010] As a further improvement, an annular rubber ring is provided on the outer side of the quick release plug, the upper end of the rubber ring is fixedly installed on the limiting portion, and the lower end of the rubber ring tightly holds the upper end of the PVC pipe.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The lower end of the auxiliary charging pipe and the upper end of the PVC pipe are provided with a quick release structure, the PVC pipe and the auxiliary charging pipe are assembled during use, and the auxiliary charging pipe is charged into the PVC pipe through the pipe opening at the upper end of the auxiliary charging pipe, so that the charging efficiency is higher.

[0013] 2, after the explosive is completed in the PVC pipe, press the quick release plug downward to make the clamping block separate from the fixed groove, the protruding part at the lower end of the quick release plug contacts the guide surface and rotates along the guide surface, so that the clamping block is efficiently clamped into the exit groove, then the auxiliary charging pipe can be pulled upward and the quick release plug is pulled out of the connecting pipe, so that the auxiliary charging pipe and the PVC pipe are efficiently separated, and the next PVC pipe is filled through the auxiliary charging pipe;

[0014] 3, after the PVC pipe and the auxiliary charging pipe are assembled, the lower end of the rubber ring tightly holds the upper end of the PVC pipe, so that the quick release plug, the connecting pipe and the connecting part of the PVC pipe are covered by the rubber ring, the sealing and waterproof performance are improved, and the blasting effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating labor.

[0016] Figure 1 is a structural schematic view of the embodiment of the present application;

[0017] Figure 2 is Figure 1 a sectional view schematic view;

[0018] Figure 3 is an assembly schematic view of the present application;

[0019] Figure 4 is a structural schematic view of the quick release plug of the embodiment of the present application;

[0020] Figure 5 is a structural schematic view of the connecting pipe of the embodiment of the present application.

[0021] In the figure: 1-PVC pipe; 2-auxiliary charging pipe; 3-quick release structure; 4-connecting pipe; 5-quick release plug; 6-elastic plate; 7-clamping block; 8-guide inclined surface; 9-limiting surface; 10-exit groove; 11-protruding part; 12-guide groove; 13-guide surface; 14-supporting part; 15-limiting part; 16-push plate; 17-plastic spring; 18-rubber ring; 19-fixed groove. DETAILED DESCRIPTION

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0023] like Figures 1 to 5 As shown, a pre-splitting blasting charging device for a water-rich rock open-pit mine includes a PVC pipe 1 and an auxiliary charging pipe 2. A quick-release structure 3 is provided between the lower end of the auxiliary charging pipe 2 and the upper end of the PVC pipe 1. The quick-release structure 3 includes a connecting pipe 4 fixedly installed at the upper end of the PVC pipe 1. The lower end of the connecting pipe 4 is threaded to the upper end of the PVC pipe 1, or the lower end of the connecting pipe 4 is snapped into the upper end of the PVC pipe 1. The lower end of the auxiliary charging pipe 2 is snapped into or threaded with a tubular quick-release plug 5 for disassembling into the upper end of the connecting pipe 4. The lower end of the quick-release plug 5 is integrally formed with a downwardly extending elastic plate 6. Two elastic plates 6 are provided opposite each other. A locking block 7 is integrally formed on the side of the elastic plate 6 close to the inner wall of the connecting pipe 4. The connecting pipe 4 is provided with a fixing groove 19 for the locking block 7 to be engaged. Specifically, the locking block 7 is a right-angled triangle. The top of the locking block 7 and the side of the elastic plate 6 that is close to the inner wall of the connecting pipe 4 form the two right-angled sides of the triangle. The bottom of the side of the locking block 7 away from the elastic plate 6 is the hypotenuse of the triangle. The bottom of the side of the locking block 7 away from the elastic plate 6 is provided with a guide slope 8. When the locking block 7 moves down, the upper end of the connecting pipe 4 or the bottom wall of the fixing groove 19 acts on the guide slope 8 and pushes the elastic plate 6 to bend inward. The top of the locking block 7 is provided with a limiting surface 9. The limiting surface 9 cooperates with the top wall of the fixing groove 19 and restricts the locking block 7 from moving upward away from the fixing groove 19.

[0024] In use, first assemble the PVC pipe 1 and the auxiliary charging pipe 2. Insert the lower end of the quick-release plug 5 along with the two elastic plates 6 into the connecting pipe 4. When the guide slope 8 on the locking block 7 contacts the upper end of the connecting pipe 4 downwards, the upper end of the connecting pipe 4 acts on the guide slope 8 and pushes the elastic plates 6 inwards, thus allowing the locking block 7 to smoothly enter the interior of the connecting pipe 4. When the quick-release plug 5 is installed in place, the locking block 7 is aligned with the corresponding fixing groove 19, such as... Figure 2 As shown, the elastic plate 6 bends outward to return to its original shape and causes the locking block 7 to engage in the fixing groove 19. The limiting surface 9 at the top of the locking block 7 abuts against the top wall of the fixing groove 19, thereby preventing the quick-release plug 5 from being pulled upward out of the connecting pipe 4, thus ensuring a secure connection between the PVC pipe 1 and the auxiliary charging pipe 2. After assembling the PVC pipe 1 and the auxiliary charging pipe 2, the operator places the PVC pipe 1 into the pre-splitting borehole and charges the explosive into the PVC pipe 1 through the opening at the upper end of the auxiliary charging pipe 2.

[0025] Figure 5As shown, the inner wall of the connecting pipe 4 is provided with an exit slot 10 matched with the clamping block 7, the upper end of the exit slot 10 extends to the top of the connecting pipe 4, and the corresponding exit slot 10 and the fixed slot 19 are distributed at a certain angle along the circumference of the connecting pipe 4. After the auxiliary charging pipe 2 is filled with the explosive, the worker presses the auxiliary charging pipe 2 and the quick release plug 5 downward, when the guide inclined surface 8 on the clamping block 7 contacts the bottom wall of the fixed slot 19, the bottom wall of the fixed slot 19 acts on the guide inclined surface 8 and pushes the elastic plate 6 to bend inward, so that the clamping block 7 is separated from the fixed slot 19; then the worker holds the auxiliary charging pipe 2 and rotates the quick release plug 5 by a certain angle, so that the clamping block 7 deviates from below the fixed slot 19 and is clamped into the corresponding exit slot 10, that is, the auxiliary charging pipe 2 can be pulled upward and the quick release plug 5 together with the clamping block 7 is pulled out of the connecting pipe 4, the auxiliary charging pipe 2 is separated from the PVC pipe 1 filled with the explosive, and then the next PVC pipe 1 is filled with the explosive through the auxiliary charging pipe 2.

[0026] As shown in Figure 4 and Figure 5 , the inner wall of the connecting pipe 4 below the quick release plug 5 is integrally formed with an annular protruding part 11, the top center of the protruding part 11 is symmetrically provided with two guide slots 12, the bottom wall of the guide slot 12 is provided with a clockwise spiral descending guide surface 13, the lower end of the quick release plug 5 is integrally formed with a downward extending support part 14, the support part 14 corresponds to the guide surface 13 one by one, and the support part 14 is staggered with the elastic plate 6, the lower end of the support part 14 is consistent with the guide surface 13, and the size of the support part 14 along the circumference of the connecting pipe 4 is less than the size of the guide surface 13 along the circumference of the connecting pipe 4, when the clamping block 7 is clamped into the fixed slot 19, the projection of the support part 14 in the vertical direction is located on the corresponding guide surface 13. After the auxiliary charging pipe 2 is filled with the explosive, the worker presses the auxiliary charging pipe 2 and the quick release plug 5 downward, when the clamping block 7 is separated from the fixed slot 19 downward and the lower end of the support part 14 contacts the corresponding guide surface 13, the quick release plug 5 will rotate along the guide surface 13 in the process of moving downward, so that the clamping block 7 is efficiently clamped into the corresponding exit slot 10, and the efficiency of separating the auxiliary charging pipe 2 from the PVC pipe is improved.

[0027] As shown in Figure 2 , the outer wall of the quick release plug 5 is integrally formed with a limit part 15 protruding in a ring shape, a ring-shaped push plate 16 is vertically slidably installed on the quick release plug 5 below the limit part 15, and a resilient member is arranged between the push plate 16 and the limit part 15, the resilient member is specifically a plastic spring 17 sleeved on the quick release plug 5 between the push plate 16 and the limit part 15, when the clamping block 7 is clamped into the fixed slot 19, the plastic spring 17 pushes the push plate 16 downward to abut against the upper end of the connecting pipe 4, so that the limit surface 9 on the clamping block 7 abuts against the top wall of the fixed slot 19, avoiding the quick release plug 5 from moving upward and downward relative to the connecting pipe 4 at will.

[0028] AsFigure 2 As shown, the outer side of the quick release plug 5 is provided with an annular rubber ring 18, the upper end of the rubber ring 18 is sleeved on the limiting part 15, the rubber ring 18 and the limiting part 15 are fixed through cementing or through bolts, the lower end of the rubber ring 18 tightly holds the upper end of the PVC pipe 1, the upper end of the rubber ring 18 is thicker and the lower end is narrower, which reserves space for the normal work of the plastic spring 17. After the PVC pipe 1 and the auxiliary charging pipe 2 are assembled, the rubber ring 18 is turned down to tightly hold the upper end of the PVC pipe 1, so that the connecting part of the quick release plug 5, the connecting pipe 4 and the PVC pipe 1 is covered through the rubber ring 18, thereby improving the sealing performance and waterproof performance.

[0029] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A pre-splitting blasting charging device for water-rich rock open-pit mines, characterized in that: The device includes a PVC pipe (1) and an auxiliary charging tube (2). A quick-release structure (3) is provided between the lower end of the auxiliary charging tube (2) and the upper end of the PVC pipe (1). The quick-release structure (3) includes a connecting tube (4) fixedly installed at the upper end of the PVC pipe (1). A tubular quick-release plug (5) for disassembling into the connecting tube (4) is fixedly installed at the lower end of the auxiliary charging tube (2). A downwardly extending elastic plate (6) is fixedly installed at the lower end of the quick-release plug (5). A locking block (7) is provided on the side of the elastic plate (6) close to the inner wall of the connecting tube (4). The connecting pipe (4) is provided with a fixing groove (19) for the locking block (7) to be inserted into; the locking block (7) is triangular, and a guide slope (8) is provided on the side of the locking block (7) away from the elastic plate (6). When the locking block (7) moves down, the upper end of the connecting pipe (4) or the bottom wall of the fixing groove (19) acts on the guide slope (8) and pushes the elastic plate (6) to bend inward; the top of the locking block (7) is provided with a limiting surface (9), which cooperates with the top wall of the fixing groove (19) and restricts the locking block (7) from moving upward away from the fixing groove (19).

2. The pre-splitting blasting charging device for water-rich rock open-pit mines as described in claim 1, characterized in that: The inner wall of the connecting tube (4) is provided with an exit groove (10) that matches the locking block (7), and the upper end of the exit groove (10) extends to the top of the connecting tube (4).

3. The pre-splitting blasting charging device for water-rich rock open-pit mines as described in claim 2, characterized in that: The inner wall of the connecting tube (4) located below the quick-release plug (5) is provided with an annular protrusion (11). The top of the protrusion (11) is provided with a guide groove (12). The bottom wall of the guide groove (12) is provided with a spirally rising or falling guide surface (13). The lower end of the quick-release plug (5) is fixedly installed with a downwardly extending support part (14). When the locking block (7) is inserted into the fixing groove (19), the projection of the support part (14) in the vertical direction is located on the guide surface (13).

4. The pre-splitting blasting charging device for water-rich rock open-pit mines as described in claim 1, characterized in that: The quick-release plug (5) has a ring-shaped protruding limiting part (15) on its outer wall. A push plate (16) is vertically slidably installed on the quick-release plug (5) below the limiting part (15). An elastic element is provided between the push plate (16) and the limiting part (15).

5. The pre-splitting blasting charging device for water-rich rock open-pit mines as described in claim 4, characterized in that: The quick-release plug (5) has an annular rubber ring (18) on its outer side. The upper end of the rubber ring (18) is fixedly installed on the limiting part (15), and the lower end of the rubber ring (18) hugs the upper end of the PVC pipe (1).

Images