V-shaped double-layer nozzle

Abstract

The invention relates to a V-shaped double-layer nozzle which comprises a lower-layer nozzle, an upper-layer nozzle and a connecting piece, one end of a water inlet of the lower-layer nozzle and one end of a water inlet of the upper-layer nozzle are fixed to the same connecting piece in an up-down overlapping mode, and the cross sections of the two water inlets are combined into a complete geometric structure to form the same water inlet. The lower-layer nozzle and the upper-layer nozzle form an included angle of 15-60 degrees in the horizontal direction by taking one end of the water inlet as a circle center and one end of the water outlet, so that a V-shaped structure is formed. Therefore, the on-way resistance of the water flow is reduced, the water flow jetting distance is increased, and meanwhile, the device has a certain coverage range and belongs to the field of environmental protection and air pollution control.

Description

Technical Field

[0001] The invention relates to a nozzle of a mine blasting dust suppression water spraying device, in particular to a V-shaped double-layer nozzle. Background Art

[0002] At present, the water column spraying distance of the mine blasting dust suppression water spraying equipment often does not meet the dust reduction or dust control requirements that users want to achieve. One type of dust suppression vehicle uses high pressure to form water mist or water column through the nozzle in the water tank to shoot to a predetermined area, which plays a role in suppressing dust or condensing dust, thereby reducing the dispersion of dust and reducing air pollution. Application No. 2019209756385 discloses a vehicle double tank water storage device, and Application No. 2020223151810 discloses a multifunctional dust suppression vehicle. The water in the water storage device of this multifunctional dust suppression vehicle is diverted through multiple water outlet pipes, transfer pipes, tees and other diversion pipes before being sprayed out from the spraying device. In addition, the path of the pipeline between the tank body water outlet pipe and the nozzle is long, and the number of flanges 11 in the pipeline is large. Under the same pressure of the dust suppression vehicle tank body, the water resistance will increase and the flow rate of the water will be affected. Therefore, the existing dust suppression vehicle nozzle is structurally not conducive to both long-distance and large-scale spraying. Summary of the invention

[0003] Aiming at the shortcomings and defects of the nozzles in the prior art that are not conducive to long-distance and wide-range spraying, the present invention provides a V-shaped double-layer nozzle, including a lower nozzle, an upper nozzle and an end connector, the lower nozzle and the upper nozzle both have a nozzle body and a water inlet and a water outlet arranged at both ends of the nozzle body; the end connector is used to fix the lower nozzle and the upper nozzle together, the end connector has an inner hole, the shape and size of the inner hole are the same or similar to the shape and size of the cross-section of the two water inlets after merging, the water inlets of the lower nozzle and the upper nozzle are fixed on this connector in an overlapping manner, the cross-sections of the two water inlets are merged into a complete geometric structure, and are aligned with the center of the inner hole of the end connector to form the same water inlet. The lower nozzle and the upper nozzle take one end of the water inlet as the center of the circle, and one end of the water outlet forms an angle of 15 to 60 degrees with each other in the horizontal direction, forming a V-shaped structure.

[0004] The water inlets of the upper layer nozzle and the lower layer nozzle respectively occupy half of the inner hole of the connecting piece. The incoming water can be evenly guided into two streams of water, which are separated into upper and lower streams and then sprayed out from the upper and lower layer nozzles to form a V-shaped effect. The coverage of water spraying and dust suppression is increased, the efficiency is improved, and there is no redundant pipeline in the middle. The coverage speed of water spraying and dust suppression is fast, and the water spraying and dust suppression effect is better.

[0005] The cross-section of the two pieces of material merged together in the middle of the water inlet of the upper nozzle and the lower nozzle is chamfered, and the upper and lower right-angled edges are chamfered at 45 or 60 degrees, so that the side that originally had thickness facing the direction of incoming water is in the form of upper and lower slopes, and its thickness is maintained within the range of 0.1-0.5cm.

[0006] The present invention has substantial characteristics and significant progress. The water inlet ends of the lower layer nozzle and the upper layer nozzle of the present invention overlap and merge together to form the same water inlet, which can evenly distribute water to two nozzles that are staggered and have a certain angle in the upper and lower layers for separate spraying, which not only solves the problem that the spraying range of the straight pipe or single water pipe is not wide enough, but also avoids the need to add a transfer pipe such as a tee to divide the nozzle into two, thereby reducing the additional resistance to the water flow in the pipeline caused by the added redundant bend structure, thereby avoiding the reduction of the water flow distance sprayed by the nozzle. The water sprayed by this V-shaped double-layer nozzle has a long distance and a large coverage range, and the dust suppression effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Attached Figure 1 It is a left view of the present invention.

[0008] Attached Figure 2 It is a front view of the present invention.

[0009] Attached Figure 3 It is the right side view of the present invention.

[0010] Attached Figure 4 It is a bottom view of the present invention.

[0011] Attached Figure 5 It is a stereogram of the present invention. Implementation

[0012] The present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0013] As attached Figure 1 , Attachment Figure 2 and attached Figure 3 A V-shaped double-layer nozzle shown includes a lower nozzle, an upper nozzle and a connecting piece, wherein one end of the water inlet of the lower nozzle and the upper nozzle is fixed on the same connecting piece, and the lower nozzle and the upper nozzle are respectively provided with a water inlet and a water outlet.

[0014] The connecting piece is a flange plate, on which bolt holes are provided for bolt connection with other water supply pipelines. The flange plate is only used to fix the lower nozzle and the upper nozzle and to bolt connection with other water supply pipelines. In order to save materials, the water inlet ends of the lower nozzle and the upper nozzle can be welded and fixed to each other, and then the water inlet can be directly welded to other connecting pieces or the water outlet pipe so that the three are directly connected. In this way, the flange plate can be omitted, and the component directly connected to the lower nozzle and the upper nozzle is the connecting piece.

[0015] The water inlet ends of the lower nozzle 9 and the upper nozzle 10 take the center of the nozzle flange 11 as the center of the circle, and the other water outlet ends form an angle of 15 to 60 degrees in the horizontal direction, forming a V-shaped structure, similar to the shape of the head of scissors.

[0016] The water inlets of the upper layer nozzle and the lower layer nozzle respectively occupy the upper and lower half of the inner hole of the flange. This structure evenly distributes the water flowing into the inner hole of the flange 11 to the two overlapping nozzle water inlets for separate spraying, which not only solves the problem that the spraying range of the straight pipe or single nozzle is not wide enough, but also avoids the need to add a transfer pipe such as a tee to divide the nozzle into two and increase the additional resistance to the water flow in the pipeline caused by the pipeline turning structure, thereby avoiding the reduction of the distance of the water flow sprayed by the nozzle.

[0017] The cross section of the water inlet of the upper nozzle 10 is a regular trapezoid, and the cross section of the water inlet of the lower nozzle 9 is an inverted trapezoid. The water inlets of the two are welded together in a regular hexagonal shape, and the distance between one set of corresponding sides of the hexagon is equal to or slightly larger than the inner hole diameter of the flange 11. The upper nozzle 10 and the lower nozzle 9 are welded and fixed with the center of the hexagon aligned with the center of the flange 11, and are then bolted to the water supply pipeline through the nozzle flange 11. The water inlets of the upper nozzle and the lower nozzle occupy the upper and lower halves of the cross section of the inner hole of the flange 11, respectively.

[0018] The lower layer nozzle 9 and the upper layer nozzle 10 are welded by four steel plates, the upper and lower left and right, respectively. The cross section from the water inlet to the water outlet gradually changes from a trapezoid to a flat rectangle, and the inner cavity of the nozzle is a hollow shrinkage structure. This manufacturing method can be selected to manufacture a double-layer nozzle with a hexagonal cross section of the water inlet with a relatively simple and convenient manufacturing process while using less material, and the geometric structure is closest to the circular inner hole of the flange 11. That is, under the premise that the upper and lower nozzles are welded by four steel plates, the hexagonal cross section of the water inlet is the closest to the geometric shape of a circle when it is connected with the circular outlet pipe and the inner hole of the flange 11, which can minimize the resistance of the water flow, and can minimize the influence of the change in the internal shape of the pipe on the water flow velocity, and prevent the loss of flow velocity from the circular water pipe to the trapezoidal water pipe of the single nozzle.

[0019] Further optimization, a common side in the middle of the hexagon formed by the combination of the upper and lower nozzles is formed by the lower steel plate of the upper nozzle 10 and the upper steel plate of the lower nozzle 9, and has a certain thickness, which is equal to the thickness of the two steel plates added together. Depending on the selection of steel plates, the thickness is approximately between 2cm-5cm. In order to further reduce the resistance of water flow, the thickness of the two steel plates combined is chamfered, and the upper and lower right-angled edges are chamfered at 45 degrees or 60 degrees, so that the original thick side is in the form of upper and lower slopes, so that the thickness is maintained in the range of 0.1-0.5cm, so that the water flow in the pipeline can be guaranteed to the greatest extent. Rapid and smooth passage without any obstruction.

[0020] For further optimization, if the upper and lower nozzles are integrally formed by casting or the like without considering the cost, the cross-sectional shape of the water inlet of the upper and lower nozzles can also be set to a semicircle with the same diameter as the water outlet of the flange 11. The upper and lower semicircles are combined together to form a corresponding circle with the water outlet pipe of the flange 11 and the inner hole of the flange 11, which will have a smaller impact on the water flow velocity. The water outlet is shrunk into a duckbill shape or a rectangular strip with round ends like the Huawei charging port, which further increases the water outlet pressure and width of the nozzle.

Claims

1. A V-shaped double-layer nozzle, characterized in that: The invention comprises a lower layer nozzle (9), an upper layer nozzle (10) and an end connecting piece, wherein the upper layer nozzle (10) has a nozzle body and a water inlet and a water outlet arranged at two ends of the nozzle body, and the lower layer nozzle (9) also has a nozzle body and a water inlet and a water outlet arranged at two ends of the nozzle body; the end connecting piece is used to fix the lower layer nozzle (9) and the upper layer nozzle (10) together; the water inlets of the lower layer nozzle (9) and the upper layer nozzle (10) are fixed to the end connecting piece in an overlapping manner, and the cross sections of the two water inlets are combined into a complete geometric shape and aligned with the inner hole center of the end connecting piece; the lower layer nozzle (9) and the upper layer nozzle (10) are separated from each other with one end of the water inlet as the center of the circle, and form a certain angle between them in the horizontal direction, forming a V-shaped structure.

2. A V-shaped double-layer nozzle according to claim 1, characterized in that: The angle is 15-60 degrees.

3. A V-shaped double-layer nozzle according to claim 2, characterized in that: The end connecting piece is a flange plate, and the flange plate has an inner hole with a shape identical or similar to that of the cross-sections of the two water inlets after being combined.

4. A V-shaped double-layer nozzle according to claim 3, characterized in that: The water inlets of the upper nozzle (10) and the lower nozzle (9) occupy the upper and lower halves of the inner hole of the flange, respectively.

5. A V-shaped double-layer nozzle according to any one of claims 1 to 3, characterized in that: The lower layer nozzle (9) and the upper layer nozzle (10) are respectively welded from four steel plates, upper, lower, left and right, and the cross section from the water inlet to the water outlet gradually transitions from a trapezoid to a flat rectangle, and the inner cavity of the nozzle is a hollow shrinkage structure.

6. A V-shaped double-layer nozzle according to claim 5, characterized in that: The cross section of the water inlet of the upper nozzle (10) is a regular trapezoid, and the cross section of the water inlet of the lower nozzle (9) is an inverted trapezoid. The upper and lower water inlets are fixedly connected so that the cross sections of the water inlets are combined to form a complete geometric structure that is a regular hexagon.

7. A V-shaped double-layer nozzle according to claim 6, characterized in that: The distance between one set of corresponding sides of the regular hexagon is equal to or slightly larger than the diameter of the inner hole of the flange (11).

8. A V-shaped double-layer nozzle according to claim 7, characterized in that: The regular hexagonal water inlets of the upper nozzle (10) and the lower nozzle (9) are aligned with the center of the flange 11 and are welded and fixed.

9. A V-shaped double-layer nozzle according to claim 8, characterized in that: The cross-section of the two pieces of material merged together between the water inlet of the upper nozzle (10) and the lower nozzle (9) is chamfered, and the right-angled sides of the upper and lower layers are chamfered at a 45-degree or 60-degree angle, so that the side that originally faces the direction of incoming water and has thickness is in the form of upper and lower slopes, and the thickness is maintained within the range of 0.1-0.5 cm.

10. The V-shaped double-layer nozzle according to claim 1, characterized in that: The end connecting piece is a ball valve, which is divided into sealed upper and lower hemispheres, each of which is provided with a rotating layer. The rotating layers of the upper and lower hemispheres can rotate horizontally relative to each other. The water inlets of the upper nozzle (10) and the lower nozzle (9) are respectively fixedly connected to the upper and lower rotating layers of the ball valve. The rotating layer of the upper ball valve is connected to the upper nozzle (10), and the rotating layer of the lower ball valve is connected to the lower nozzle (9). The angle adjustment between the upper nozzle (10) and the lower nozzle (9) is achieved through the relative rotation of the upper and lower rotating layers of the ball valve.

Images