Spray head structure for tunnel spray maintenance

Abstract

The utility model discloses a spray head structure for tunnel spray maintenance, which comprises a separation cylinder, a central cylinder is coaxially and rotatably arranged in the separation cylinder, and a plurality of through holes are arranged on the cylinder wall of the central cylinder; a plurality of fan blades are uniformly distributed on the cylinder wall of the central cylinder along the circumferential direction; a water inlet is formed in the cylinder wall of the separation cylinder corresponding to the tangential direction of the rotating circumference of the fan blades; a water outlet is formed in the center of the bottom of the center cylinder, a spraying nozzle is arranged at the bottom of the separation cylinder, and the spraying nozzle is connected with the water outlet; according to the utility model, impurities such as soil and gravels in spraying water can be separated, and the impurities such as the soil and the gravels in the spraying water are prevented from blocking the spray head.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of spray head, and relates to a spray head structure for tunnel spray maintenance. BACKGROUND

[0002] In the tunnel mining process, the inside of the tunnel needs to be sprayed by the spray head to maintain the tunnel. In order to conveniently use the spray water, the water accumulated in the rock stratum and soil stratum during the tunnel mining process is directly used as the spray water, but the spray water accumulated in the rock stratum and soil stratum often contains a large amount of mud, sand, rock debris and the like. Even if the spray water is deposited in the temporary storage pit for a period of time, the top clarified water used still contains a small amount of mud, sand and the like. This leads to the fact that after the spray water containing mud and sand is sprayed through the spray head for a long time, the spray head is easily blocked by the mud, sand and the like.

[0003] Therefore, in view of the problem that the existing tunnel maintenance spray head is easily blocked during the process of directly using the water accumulated in the tunnel as the spray water, the utility model discloses a spray head structure for tunnel spray maintenance. UTILITY MODEL CONTENTS

[0004] The utility model discloses a kind of spray head structures for tunnel spray maintenance, can separate mud, sand and the like impurities in spray water, avoid mud, sand and the like impurities in spray water block spray head.

[0005] The utility model discloses the following technical solutions are realized:

[0006] A kind of spray head structure for tunnel spray maintenance, including separation cylinder, the inside coaxial rotation of the separation cylinder is provided with center cylinder, the cylinder wall of the center cylinder is provided with several through holes;The cylinder wall of the center cylinder is uniformly distributed with several fan blades along the circumferential direction, the tangent direction of the tangent line of the separation cylinder cylinder wall is provided with water inlet corresponding to fan rotation circumference;The bottom center of the center cylinder is provided with water outlet, the bottom of the separation cylinder is provided with spray head, and the spray head is connected with water outlet.

[0007] Spray water enters the inside of separation cylinder by the water inlet of the same ratio of separation cylinder, and is impacted on fan blade along the tangent direction of the circumference of fan rotation, to drive fan blade and center cylinder rotation. The centrifugal force generated by fan blade and center cylinder rotation makes that mud, sand and the like substances with greater density in spray water deposit on the side close to the cylinder wall of separation cylinder under the action of centrifugal force, and water with smaller density is close to center cylinder distribution, and then is transported to spray head and sprayed out by the water outlet in the bottom center of center cylinder by the through hole in the cylinder wall of center cylinder, realizes to spray inside tunnel and maintain.

[0008] Further, the inner side cylinder wall of the separation cylinder is provided with a deposition groove, and a deposition gap is left between the edge of the fan away from the central cylinder and the deposition groove.

[0009] Further, the deposition groove is spiral, and the inner side bottom of the separation cylinder is provided with an annular groove, and the bottom end of the deposition groove is communicated with the top of the annular groove.

[0010] Further, the width of the deposition gap is 3-5 mm.

[0011] Further, the central cylinder comprises a central cylinder body and a cylindrical filter screen, the central cylinder body is coaxially arranged in the inside of the separation cylinder, and the cylindrical filter screen is clamped in the inside of the central cylinder body.

[0012] Further, the inner cylinder wall of the central cylinder body is provided with an axial clamping groove, and the outer wall of the cylindrical filter screen is provided with an axial convex rib matched with the axial clamping groove.

[0013] Further, the bottom of the separation cylinder is threadedly matched with an end cover.

[0014] Further, the inside of the end cover is a conical structure with a large upper part and a small lower part.

[0015] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0016] The utility model discloses a tunnel spraying maintenance nozzle structure, which comprises a separation cylinder, a central cylinder and a plurality of fans, wherein the separation cylinder is provided with a plurality of water inlets on the circumferential tangent direction of the fan rotation, the central cylinder is coaxially arranged in the inside of the separation cylinder, and the plurality of fans are arranged on the outer side cylinder wall of the central cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the inside schematic view of the tunnel spraying maintenance nozzle structure;

[0018] Figure 2 It is the A-A section view of the tunnel spraying maintenance nozzle structure; Figure 1

[0019] ​Figure 3 Structure diagram of the separation cylinder;

[0020] Figure 4 Structure diagram of the center cylinder.

[0021] Wherein: 1-separation cylinder; 2-center cylinder; 3-fan blade; 4-water inlet; 5-water outlet; 6-spraying nozzle; 7-deposition groove; 8-annular groove; 9-end cover; 21-center cylinder body; 22-cylindrical filter screen; 100-axial clamping groove; 200-axial convex ridge. DETAILED DESCRIPTION

[0022] The following detailed description is exemplary in nature and is intended to provide further description of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the application pertains.

[0023] It is to be noted that the terminology used herein is for purpose of describing the particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0024] For the convenience of description, if the terms "upper", "lower", "left", "right" appear in the present application, they only mean the same as the upper, lower, left and right directions of the drawings themselves, and do not limit the structure, but only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0025] Part of the explanation of the terms: the terms "mounting", "connection", "connection", "fixing" and the like in the present application should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the internal connection of two elements, or the interaction relationship between two elements, for ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] Example 1:

[0027] The structure of the spraying head for tunnel spraying maintenance in the embodiment is as shown in Figure 1As shown, including separation cylinder 1, the inside of the separation cylinder 1 is coaxially provided with a central cylinder 2, the cylinder wall of the central cylinder 2 is provided with a plurality of through holes; the cylinder wall of the central cylinder 2 is uniformly distributed in the circumferential direction and provided with a plurality of fan blades 3, the cylinder wall of the separation cylinder 1 is provided with a water inlet 4 corresponding to the tangent direction of the rotation circumference of the fan blade 3; the bottom center of the central cylinder 2 is provided with a water outlet 5, the bottom of the separation cylinder 1 is provided with a spray nozzle 6, and the spray nozzle 6 is connected with the water outlet 5.

[0028] As shown in Figure 2 The inside of the separation cylinder 1 is coaxially provided with a central cylinder 2, the cylinder wall of the central cylinder 2 is densely provided with a plurality of through holes, and the outer side of the cylinder wall of the central cylinder 2 is uniformly distributed in the circumferential direction and provided with six groups of fan blades 3. The water inlet 4 is provided on the cylinder wall of the separation cylinder 1 along the tangent direction of the rotation circumference of the fan blade 3, and the water inlet 4 is connected with the external water pump through the pipeline. The spray water containing soil, sand and other impurities is delivered to the inside of the separation cylinder 1 by the external water pump at a certain pressure, so that the spray water acts on the side surface of the fan blade 3 in the tangent direction, and then drives the fan blade 3 and the central cylinder 2 to rotate. The centrifugal force generated by the rotation of the fan blade 3 and the central cylinder 2 makes the soil, sand and other substances with higher density in the spray water deposit on the side of the cylinder wall of the separation cylinder 1 under the action of the centrifugal force, and the water with lower density is distributed on the side close to the central cylinder 2, so as to separate the soil and sand in the spray water, and avoid the situation that the soil and sand block the spray nozzle 6 in the long-term use process. The spray water separated from the soil and sand enters the inside of the central cylinder 2 through the densely distributed through holes on the central cylinder 2, and flows to the spray nozzle 6 through the water outlet 5 at the bottom center of the central cylinder 2, and then is sprayed to the tunnel through the spray nozzle 6 to complete the tunnel spray maintenance work.

[0029] Example 2:

[0030] A spray head structure for tunnel spray maintenance, which is improved on the basis of example 1, as shown in Figure 3 The inside of the separation cylinder 1 is provided with a deposition groove 7, and the edge of the fan blade 3 away from the central cylinder 2 is left with a deposition gap between the deposition groove 7. The soil and sand in the spray water move towards the cylinder wall of the separation cylinder 1 under the action of the centrifugal force and gradually deposit to the bottom of the separation cylinder 1 along the deposition groove 7, so as to separate the water, soil and sand. At the same time, the edge of the fan blade 3 away from the central cylinder 2 is left with a deposition gap between the deposition groove 7, which ensures that the soil and sand have enough deposition space and avoids the jamming of the fan blade 3 during the deposition process.

[0031] Further, the width of the deposition gap is 3-5mm, and preferably the width of the deposition gap is 5mm.

[0032] The other parts of this embodiment are the same as those of example 1, and will not be described here.

[0033] Embodiment 3:

[0034] A spray head structure for tunnel spray maintenance is improved based on any one of Embodiments 1-3, as shown in Figure 3 The deposition groove 7 is in a spiral shape, and the inner bottom of the separation cylinder 1 is provided with an annular groove 8, and the bottom end of the deposition groove 7 is in communication with the top of the annular groove 8.

[0035] The spiral-shaped deposition groove 7 can guide the mud and gravel, so that the mud and gravel quickly settle along the spiral-shaped deposition groove 7 to the annular groove 8. The annular groove 8 is used to store the settled mud and gravel, so as to avoid the large accumulation of mud and gravel at the middle and upper positions of the separation cylinder 1 from affecting the normal rotation of the fan blade 3.

[0036] The other parts of this embodiment are the same as Embodiments 1 or 2, and will not be described again.

[0037] Embodiment 4:

[0038] A spray head structure for tunnel spray maintenance is improved based on any one of Embodiments 1-3, as shown in Figure 1 and Figure 4 The center cylinder 2 includes a center cylinder body 21 and a cylindrical filter screen 22, the center cylinder body 21 is coaxially arranged in the inside of the separation cylinder 1, and the cylindrical filter screen 22 is detachably clamped in the inside of the center cylinder body 21.

[0039] The center cylinder body 21 is densely provided with a plurality of through holes on the cylinder wall for water flow, and the cylindrical filter screen 22 is detachably clamped in the inside of the center cylinder body 21. In the process of the spray water separated from the mud and gravel flowing through the through holes on the cylinder wall of the center cylinder body 21 to the inside of the center cylinder body 21, the spray water further passes through the cylindrical filter screen 22 for filtration, further separating the small particles of sand and other impurities remaining in the spray water, and avoiding too much sand and impurities from entering the spray head 6.

[0040] Further, the inner cylinder wall of the center cylinder body 21 is provided with an axial clamping groove 100, and the outer wall of the cylindrical filter screen 22 is provided with an axial convex rib 200 matched with the axial clamping groove 100. After the axial convex rib 200 is aligned with the axial clamping groove 100, the axial clamping groove 100 is clamped, realizing the axial clamping of the cylindrical filter screen 22 in the inside of the center cylinder body 21, and at this time, the cylindrical filter screen 22 can rotate synchronously with the center cylinder body 21. After a long time of use, the cylindrical filter screen 22 is deposited with mud and gravel. In order to avoid the complete blockage of the cylindrical filter screen 22 from affecting the flow of the spray water, the cylindrical filter screen 22 can be taken out from the inside of the center cylinder body 21 for cleaning, and then the cleaned cylindrical filter screen 22 is conveniently installed in the inside of the center cylinder body 21.

[0041] The other parts of this embodiment are the same as any one of embodiments 1-3, so they will not be described again.

[0042] Example 5:

[0043] A nozzle structure for tunnel spraying maintenance, improved based on any one of embodiments 1-4, such as... Figure 1 As shown, an end cap 9 is threadedly installed at the bottom of the separating cylinder 1. The end cap 9 has an internal conical structure that is wider at the top and narrower at the bottom. An internal threaded hole is provided at the bottom of the separating cylinder 1, and an external thread that mates with the internal threaded hole is provided on the outer top surface of the end cap 9, allowing the end cap 9 to be detachably installed at the bottom of the separating cylinder 1. After prolonged use, the end cap 9 can be rotated and removed to clean the dirt, gravel, and other impurities deposited inside the separating cylinder 1. Simultaneously, the internal conical structure of the end cap 9 ensures that the dirt and gravel deposited inside the separating cylinder 1 settle downwards along the conical surface of the structure, preventing interference with the rotation of the fan blades 3 and the central cylinder 2.

[0044] The other parts of this embodiment are the same as any one of embodiments 1-4, so they will not be described again.

[0045] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A nozzle structure for tunnel spraying maintenance, comprising a separation cylinder (1), characterized in that, The inside of the separation cylinder (1) is coaxially provided with a center cylinder (2), a plurality of through holes are arranged on the cylinder wall of the center cylinder (2); a plurality of fan blades (3) are arranged on the cylinder wall of the center cylinder (2) in a circumferential direction; a water inlet (4) is arranged on the cylinder wall of the separation cylinder (1) in a tangential direction corresponding to the rotation circumference of the fan blade (3); a water outlet (5) is arranged at the center of the bottom of the center cylinder (2); a spray nozzle (6) is arranged at the bottom of the separation cylinder (1) and is connected with the water outlet (5).

2. The nozzle structure for tunnel spraying maintenance according to claim 1, characterized in that, A deposition groove (7) is arranged on the inner cylinder wall of the separation cylinder (1), and a deposition gap is left between the edge of the fan blade (3) away from the center cylinder (2) and the deposition groove (7).

3. The spray head structure for tunnel spraying maintenance according to claim 2, characterized in that, The deposition groove (7) is in a spiral shape, and an annular groove (8) is arranged at the bottom of the separation cylinder (1), and the bottom end of the deposition groove (7) is in communication with the top of the annular groove (8).

4. The spray head structure for tunnel spraying maintenance according to claim 3, characterized in that, The width of the deposition gap is 3-5mm.

5. A nozzle structure for tunnel spraying maintenance according to any one of claims 1 to 4, characterized in that The center cylinder (2) comprises a center cylinder body (21) and a cylindrical filter screen (22), the center cylinder body (21) is coaxially arranged in the inside of the separation cylinder (1), and the cylindrical filter screen (22) is clamped in the inside of the center cylinder body (21).

6. The spray head structure for tunnel spraying maintenance according to claim 5, characterized in that, An axial clamping groove (100) is arranged on the inner cylinder wall of the center cylinder body (21), and an axial convex rib (200) is arranged on the outer wall of the cylindrical filter screen (22) and is clamped in cooperation with the axial clamping groove (100).

7. A nozzle structure for tunnel spraying maintenance according to any one of claims 1 to 4, characterized in that The bottom of the separation cylinder (1) is threadedly fitted with an end cover (9).

8. The spray head structure for tunnel spraying maintenance according to claim 7, characterized in that, The inside of the end cover (9) is in a conical structure with a large upper part and a small lower part.

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