Spinning vector nozzle for rock breaking test

Abstract

The utility model relates to the technical field of rock breaking tests, in particular to a self-rotating type vector nozzle for rock breaking tests, which comprises a high-pressure water pipe, a connector is fixedly connected onto the surface of the high-pressure water pipe, an installation head is fixedly connected onto the surface of the connector, an external thread is arranged on the surface of the installation head, and the installation head is fixedly connected with the high-pressure water pipe. A connecting pipe is fixedly connected to the inner surface of the mounting head, an output head is fixedly connected to the top of the connecting pipe, and a guide rod is fixedly connected to the inner surface of the connecting pipe. According to the utility model, when the water flow is output to the rock through the output head, the water flow is rotatably shot on the rock, and the rock breaking capability is improved by the rotary jet flow, so that the rock breaking test detection efficiency is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rock breaking tests, and specifically relates to a self-rotating vector nozzle for rock breaking tests. Background Technique

[0002] Rock breaking tests are usually carried out to evaluate the compressive strength of rocks, the fracture properties of rocks, and the deformation of rocks under stress. These tests can help engineers and scientists understand the physical properties of rocks, so as to select appropriate blasting schemes, rock mining methods or geological exploration schemes in engineering projects. Through rock breaking tests, the mechanical properties of rocks can be better understood to ensure the safety and efficiency of engineering projects.

[0003] The existing nozzles for rock breaking tests use water flow with relatively high water pressure to conduct rock breaking tests on rocks. Since the compressive capacity of some rocks is relatively strong, when conducting rock breaking tests, the nozzles need to be used to cut the rocks repeatedly, resulting in low efficiency of rock breaking tests. Content of the Utility Model

[0004] The purpose of the utility model is to provide a self-rotating vector nozzle for rock breaking tests, so as to solve the problem that due to the relatively strong compressive capacity of some rocks, when conducting rock breaking tests, the nozzles need to be used to cut the rocks repeatedly, resulting in low efficiency of rock breaking tests as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a self-rotating vector nozzle for rock breaking tests, including a high-pressure water pipe, a connector is fixedly connected to the surface of the high-pressure water pipe, a mounting head is fixedly connected to the surface of the connector, an external thread is provided on the surface of the mounting head, a connecting pipe is fixedly connected to the inner surface of the mounting head, an output head is fixedly connected to the top of the connecting pipe, and a guide rod is fixedly connected to the inner surface of the connecting pipe.

[0006] Preferably, a sealing mechanism is provided at the bottom of the high-pressure water pipe. The sealing mechanism includes a spring, the spring is fixedly connected to the bottom of the mounting head, a movable ring is fixedly connected to the bottom of the spring, and a sealing gasket is fixedly connected to the bottom of the movable ring.

[0007] Preferably, the guide rod is in a spiral shape, multiple groups of guide rods are provided, and the guide rods are evenly distributed in a ring on the inner surface of the connecting pipe.

[0008] Preferably, the inner surface of the output head is communicated with the inner surface of the connecting pipe, the guide rod extends from the inner surface of the connecting pipe to the inner surface of the guide rod, and a spiral guide groove is formed on the inner surfaces of the connecting pipe and the guide rod by the guide rod.

[0009] Preferably, the connector is threadedly connected to the external thread, and the connector is fixedly installed on the surface of the mounting head through the external thread. The rotation direction of the guide rod is the same as the tightening direction of the connector on the external thread.

[0010] Preferably, the inner and outer diameters of the movable ring and the sealing gasket are the same, and the movable ring and the sealing gasket slide on the outer surface of the connecting pipe.

[0011] Preferably, the elastic force of the spring acts on the sealing gasket through the movable ring, and the movable ring presses the sealing gasket against the inner surface of the connector.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. For this nozzle, when high-pressure water flow passes through the connecting pipe from the high-pressure water pipe, it will be guided by the guide rod to form a diversion groove, so that when the water flow is output to the rock through the output head, the water flow impacts the rock in a rotary manner. The rotary jet improves the rock-breaking ability of the rock, thereby reducing the efficiency of rock-breaking test detection.

[0014] 2. For this nozzle, the connector is installed on the mounting head through the external thread, so that the high-pressure water pipe and the connecting pipe are docked. At this time, the connector drives the movable ring and the sealing gasket to slide upward on the surface of the connecting pipe. The movable ring continuously compresses the spring to deform it. The elastic force of the spring acts on the sealing gasket through the movable ring, so that the sealing gasket seals between the connector and the connecting pipe, thereby adding a sealing protection during the installation process of the connector and the mounting head, and improving the sealing performance of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front three-dimensional structural schematic diagram of the present utility model;

[0016] Figure 2 is a front sectional and bottom three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 3 is a front three-dimensional structural schematic diagram of the nozzle structure of the present utility model;

[0018] Figure 4 is of the present utility model Figure 1 is an enlarged structural schematic diagram of part A therein;

[0019] Figure 5 is of the present utility model Figure 2 is an enlarged structural schematic diagram of part B therein.

[0020] In the figure: 1. High-pressure water pipe; 11. Connector; 2. Connecting pipe; 21. Mounting head; 22. External thread; 23. Output head; 24. Guide rod; 3. Spring; 31. Movable ring; 32. Sealing gasket. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-5 , an embodiment provided by the present invention:

[0023] A spin vector nozzle for rock breaking test: It includes a high-pressure water pipe 1. A connector 11 is fixedly connected to the surface of the high-pressure water pipe 1. An installation head 21 is fixedly connected to the surface of the connector 11. An external thread 22 is provided on the surface of the installation head 21. A connecting pipe 2 is fixedly connected to the inner surface of the installation head 21. An output head 23 is fixedly connected to the top of the connecting pipe 2. A guiding rod 24 is fixedly connected to the inner surface of the connecting pipe 2. This nozzle can make the water perform rotary jet during the process of being output from the output head 23, thereby improving the rock breaking ability of the nozzle and the efficiency of rock breaking test detection.

[0024] Furthermore, a sealing mechanism is provided at the bottom of the high-pressure water pipe 1. The sealing mechanism includes a spring 3. The spring 3 is fixedly connected to the bottom of the installation head 21. A movable ring 31 is fixedly connected to the bottom of the spring 3. A sealing gasket 32 is fixedly connected to the bottom of the movable ring 31. This sealing mechanism can improve the sealing performance of the connection between the high-pressure water pipe 1 and the nozzle, avoid water leakage during the use of the nozzle, and improve the experience of using the nozzle.

[0025] Furthermore, the guiding rod 24 is in a spiral shape. Multiple groups of guiding rods 24 are provided, and the guiding rods 24 are evenly distributed in a ring on the inner surface of the connecting pipe 2. The cross-section of the guiding rod 24 is rectangular. The distance between each group of guiding rods 24 is the same and they do not contact each other. The guiding rod 24 guides the water flow output from the output head 23 to determine the outflow direction of the water flow.

[0026] Furthermore, the inner surface of the output head 23 communicates with the inner surface of the connecting pipe 2. The guide rod 24 extends on the inner surface of the connecting pipe 2 to the inner surface of the guide rod 24. The guide rod 24 forms a spiral guide groove on the inner surfaces of the connecting pipe 2 and the guide rod 24. Under the guidance of the thread groove of the guide rod 24, the output head 23 performs a rotary jet of water flow. Since the shear and tensile strengths of rocks are much lower than their compressive strength, rocks are easily broken under the action of shear stress and tensile stress. Therefore, the shearing action generated by the rotary component of the jet on the rock surface is very conducive to the breaking of rocks. When the jet impacts the rock surface, the weak surface of the rock mass inside the impact ring surface is first eroded due to its low strength, so that the rock particles are exposed to form a conical surface. The rotary component will apply a parallel load on the conical surface, generating tensile stress to cause cracks in the rock. The fluid enters the cracks to produce a water wedge effect, causing the cracks to continuously expand and gradually communicate with each other, resulting in rock breaking.

[0027] Furthermore, the connecting head 11 is threadedly connected to the external thread 22. The connecting head 11 is fixedly installed on the surface of the mounting head 21 through the external thread 22. The rotation direction of the guide rod 24 is the same as the tightening direction of the connecting head 11 on the external thread 22. During the rotation of the water flow, a centrifugal force will be driven by the connecting pipe 2 on the mounting head 21. This centrifugal force will make the connection between the connecting head 11 and the mounting head 21 more firm, avoiding the phenomenon that the connecting head 11 falls off from the mounting head 21.

[0028] Furthermore, the inner and outer diameters of the movable ring 31 and the sealing gasket 32 are the same. The movable ring 31 and the sealing gasket 32 slide on the outer surface of the connecting pipe 2. The sealing gasket 32 seals between the connecting head 11 and the connecting pipe 2, thus adding a layer of protection between the connecting head 11 and the mounting head 21.

[0029] Furthermore, the elastic force of the spring 3 acts on the sealing gasket 32 through the movable ring 31. The movable ring 31 presses the sealing gasket 32 against the inner surface of the connecting head 11. After being squeezed and deformed, the sealing gasket 32 seals between the connecting head 11 and the connecting pipe 2.

[0030] Working principle: When high-pressure water flow passes through the connecting pipe 2 from the high-pressure water pipe 1, it will be guided by the diversion groove formed by the guide rod 24. When the water flow is output to the rock through the output head 23, the water flow shoots on the rock in a rotary manner. The rotary jet improves the rock-breaking ability of the rock, thereby reducing the efficiency of rock-breaking test detection.

[0031] The connector 11 is installed on the mounting head 21 through the external thread 22, so that the high-pressure water pipe 1 and the connecting pipe 2 are docked. At this time, the connector 11 drives the movable ring 31 and the sealing gasket 32 to slide upward on the surface of the connecting pipe 2. The movable ring 31 continuously compresses the spring 3 to deform it. The elastic force of the spring 3 acts on the sealing gasket 32 through the movable ring 31, so that the sealing gasket 32 seals between the connector 11 and the connecting pipe 2, thereby adding a sealing protection during the installation process of the connector 11 and the mounting head 21 and improving the sealing performance of the nozzle.

[0032] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. A self-spinning vector nozzle for rock breaking testing, comprising a high-pressure water pipe (1), a connector (11) being fixedly connected to the surface of the high-pressure water pipe (1), characterized in that: A mounting head (21) is fixedly connected to the surface of the connecting head (11), an external thread (22) is provided on the surface of the mounting head (21), a connecting pipe (2) is fixedly connected to the inner surface of the mounting head (21), an output head (23) is fixedly connected to the top of the connecting pipe (2), and a guide rod (24) is fixedly connected to the inner surface of the connecting pipe (2).

2. The self-spinning vector nozzle for rock breaking test according to claim 1, characterized in that: A sealing mechanism is provided at the bottom of the high-pressure water pipe (1), the sealing mechanism comprising a spring (3), the spring (3) being fixedly connected to the bottom of the mounting head (21), the bottom of the spring (3) being fixedly connected to a movable ring (31), and the bottom of the movable ring (31) being fixedly connected to a sealing gasket (32).

3. The self-spinning vector nozzle for rock breaking test according to claim 1, characterized in that: The guide rods (24) are in a spiral shape, a plurality of guide rods (24) are provided, and the guide rods (24) are in a ring shape and evenly distributed on the inner surface of the connecting pipe (2).

4. The self-spinning vector nozzle for rock breaking test according to claim 3, characterized in that: The inner surface of the output head (23) is connected to the inner surface of the connecting tube (2), the guide rod (24) extends from the inner surface of the connecting tube (2) to the inner surface of the guide rod (24), and the guide rod (24) forms a spiral guide groove on the inner surfaces of the connecting tube (2) and the guide rod (24).

5. The self-spinning vector nozzle for rock breaking test according to claim 1, characterized in that: The connecting head (11) is threadedly connected to the external thread (22); the connecting head (11) is fixedly mounted on the surface of the mounting head (21) via the external thread (22); and the rotation direction of the guide rod (24) is the same as the tightening direction of the connecting head (11) on the external thread (22).

6. The self-spinning vector nozzle for rock breaking test according to claim 2, characterized in that: The movable ring (31) and the sealing gasket (32) have the same inner and outer diameters, and the movable ring (31) and the sealing gasket (32) slide on the outer surface of the connecting pipe (2).

7. The self-spinning vector nozzle for rock breaking test according to claim 6, characterized in that: The elastic force of the spring (3) acts on the sealing gasket (32) through the movable ring (31), and the movable ring (31) presses the sealing gasket (32) against the inner surface of the connecting head (11).

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