JP3074176U - Hollow nozzle - Google Patents

Abstract

(57) [Problem] To provide a structure in which a hollow nozzle has a spray function of a real nozzle. SOLUTION: The outer peripheral flow guide plate surface at the water outlet of a known hollow nozzle is expanded to allow the water flow in the hollow nozzle to pass through the outer peripheral flow guide plate surface by the action of centrifugal force. A plurality of water blocking pieces are provided at appropriate positions, and a part of the water spouting from the water outlet is rebounded by each water blocking piece to make smaller granules, which is a better secondary atomization effect than known hollow nozzles In addition, the atomized water droplets are evenly spread and dropped at the center and the outer circumference of the water bundle, and the water bundle to be sprayed is formed with a uniform distribution of the real heart type. Is also provided.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a kind of tangential type hollow nozzle, and relates to a hollow type nozzle in which water sprayed from the hollow type nozzle has a uniform distribution of the actual center and the atomizing effect is good.

[0002]

[Prior art]

 Well-known nozzles are of three types: fan type, solid type and hollow type. Among them, the fan type nozzle is irrelevant to the present invention, and the description is omitted. The inside of a well-known tangential hollow nozzle 10 is hollow, and an eccentric water inlet 11 is installed horizontally as shown in FIG. The water sent from the eccentric water inlet 11 continuously advances in the tangential direction inside the nozzle 10, constantly collides with the inner wall of the nozzle 10 and rapidly rotates, thereby spraying from the water outlet 12 at the lower end of the nozzle 10. Sprinkle the water bundle into a hollow ring by centrifugal force.

[0003] The real-core nozzle 20 is provided at the center thereof with a turbulent core 21 having a spiral structure 23, as shown in FIG. That is, the water fed into the nozzle 20 from the water inlet 22 changes the flow direction under the restriction of the helical structure 23 of the turbulent core 21, and performs an intense rapid rotational movement in the nozzle 20. It gushes from the water outlet 24 of the nozzle 20. Therefore, the water flux finally sprayed from the water outlet 24 of the nozzle 20 exhibits a relatively concentrated real heart distribution.

The above-mentioned two types of well-known nozzles 10 and 20 each have an applicable range of application, advantages and disadvantages, and it is necessary to select and use the nozzles 10 and 20 to be applied as needed. . The advantages and disadvantages of the two nozzles 10 and 20 described above are as follows. 1. Operating pressure The water flow passage diameter of the turbulent core 21 provided in the real nozzle 20 is relatively small, the pressure loss is relatively large, and therefore, the normal operation purpose can be achieved only when there is a relatively large water flow pressure. . On the other hand, since the operating pressure of the hollow nozzle 10 does not need to be so large, normal work can be performed even at a relatively low water flow pressure. 2. Water (or other liquid) granules The water sprayed by the hollow nozzle 10 forms a strong rotation through a tangential flow with respect to the inner wall of the nozzle 10, and the water granules are easily impacted and spread out, Sprayed water granules are relatively small and atomization is good. On the other hand, the turbulent core 21 in the real-core nozzle 20 receives the water pressure directly and changes the direction of the water flow, so that the pressure loss is relatively large and the energy for dispersing the water by impact is relatively small. Were relatively dense, the granules were relatively large, and the degree of atomization was poor. 3. Distribution of water spray The water sprayed by the hollow nozzle 10 has a hollow ring shape, and the area to be sprayed is narrow, so that the operation effect is limited. On the other hand, since the water sprayed by the real-core type nozzle 20 has a real-heart shape, its application range is relatively wide. 4. Ease of clogging The turbulent core 21 mounted in the solid-core nozzle 20 has a relatively small hole diameter for allowing foreign matter to pass through, and is therefore easily clogged. On the other hand, the hollow nozzle 10 is hardly clogged.

In view of the fact that the above-mentioned two well-known nozzles have drawbacks which cannot be avoided, the present applicant sprays a water bundle in which the tangential type hollow nozzle has a real distribution and a good atomization effect. We have been conducting research and development to make it possible.

[0006]

[Problems to be solved by the invention]

 It is an object of the present invention to provide a hollow nozzle having a spray effect of a real nozzle, and more specifically, the present invention extends the outer flow guide plate surface of a water outlet of a hollow nozzle. The centrifugal force allows the water flow in the hollow nozzle to pass through the outer flow guide plate surface, and a plurality of water-stopping pieces (two or more rounds are distributed and installed at appropriate positions on the outer flow guide plate surface). In addition, a part of the water spouted from the water outlet is bounced back by each water-stopping piece to form smaller granules, which forms a better secondary atomization effect than known hollow nozzles. It is an object of the present invention to provide a hollow nozzle in which the atomized water droplets are uniformly scattered and dropped at the center and the outer periphery of the water bundle to form a real-centered uniform distribution in the water bundle to be sprayed. I have.

[0007]

[Means for Solving the Problems]

 The invention of claim 1 is directed to a hollow nozzle which is hollow and communicates with an eccentric water inlet installed horizontally, wherein a flow guide plate surface on an outer periphery of a water outlet of the nozzle is expanded and expanded. Are provided with a plurality of water blocking pieces, and at least a part of the water sprayed from the water outlet is repelled by each water blocking piece and crushed into small granules, and scattered and dropped to the center and outer periphery of the water bundle, respectively. The hollow nozzle is characterized in that the water flux to be sprayed is evenly distributed in a real-heart manner. The invention according to claim 2 is the hollow nozzle according to claim 1, wherein in the hollow nozzle, at least a part of the water-blocking surface of the water-blocking piece has a substantially right angle with a spray direction of water. . The hollow nozzle according to claim 1, wherein the plurality of water-stopping pieces are arranged in at least two loops depending on the positions of the water-stopping pieces in the hollow nozzle. And The invention according to claim 4 is the hollow nozzle according to claim 3, characterized in that, in the hollow nozzle, the first water blocking piece is uniformly disposed near the outer periphery of the water outlet. . The invention according to claim 5 is characterized in that, in the hollow nozzle, the first circumferential cut piece is located at a position where the second circumferential cut piece is appropriately spaced from the first circumferential cut piece on the outer periphery of the first circumferential cut piece. The hollow nozzle according to claim 4, wherein the nozzle is uniformly arranged so as to fill the gap. The invention according to claim 6 is the hollow nozzle according to claim 5, wherein in the hollow nozzle, the end of the second circumferential water blocking piece has a slope having a high inside and a low outside. The invention according to claim 7 is the hollow nozzle according to claim 3, wherein an outermost water stop piece is provided at an outermost edge of the flow guide plate surface of the water outlet in the hollow nozzle. I have. The invention according to claim 8 is the hollow nozzle according to claim 7, characterized in that the outermost water-stop piece has a triangular sharp shape in the hollow nozzle.

[0008]

[Embodiment of the invention]

 The inside of the hollow nozzle 30 of the present invention is hollow, and is provided with an eccentric water inlet 31 horizontally installed for tangential water inlet. The feature of the present invention is that the flow guide plate surface 33 around the water outlet 32 of the nozzle 30 is expanded, and a plurality of water blocking pieces 34, 35, 36 are provided on the expanded upper surface of the flow guide plate 33, In addition, the water stopping surface of each of the water stopping pieces 34, 35, and 36 is substantially perpendicular to the direction of the jet of water, and the water granules 40 sprayed from the water outlet are partially rebounded by the water stopping pieces 34, 35, and 36 to cause impact. The particles are crushed into smaller condyles, and scattered and dropped at the center of the water bundle, so that the sprayed water bundle has a real-hearted uniform distribution.

According to a preferred embodiment, the plurality of water blocking pieces 34, 35, 36 are distributed at positions on the flow guide plate surface 33 (positions having different radial distances), and are distributed and arranged so as to make three rounds. Then, the first circumferential water stopping piece 34 is uniformly distributed near the water outlet 32, crushes the water granules 40, scatters the water granules 40, drops toward the center of the water bundle, and drops the center of the water bundle. Make it a true heart.

The second circumferential cut pieces 35 are uniformly distributed at appropriate distances from the outer periphery of the first circumferential cut pieces 34 and are arranged in such a manner as to fill the gaps between the first circumferential cut pieces 34. . The water granules 40 that have not hit the first circumferential water stop piece 34 hit the second circumferential water stop piece 35, are crushed and fall as a scattered water bundle. The water granules 40 that have hit the slope 37 at the end of the second circumferential water-stopping piece 35 further scatter and fall outward. Thus, the range of the water bundle is widened by hitting the second circumferential water stopping piece 35 and falling.

An outermost water-stop piece 36 is provided at the outermost edge of the flow guide plate surface 33 on the outer periphery of the water outlet 32, and is arranged in such a manner as to fill the space between the first and second water-stop pieces 34, 35. You. The outermost water stop piece 36 has a triangular sharp shape, and not all the water granules passing through the outermost water stop piece 36 abut on the outermost water stop piece 36, but some of them hit the outermost water stop piece 36 and some of them Pass on both sides. In addition, the water granules crushed to the sharp edges of the triangle are diverged to both sides at a further oblique angle, that is, the outer periphery of the water bundle is made more uniform.

[0012]

[Effect of the invention]

 The present invention is a kind of the hollow nozzle, so that the operating pressure does not need to be excessive, and is the same as the operating pressure required for the well-known tangential hollow nozzle 10 described above. Similarly, the present invention is hard to clog. The water flux to be sprayed according to the present invention is a real water flux, which is the same as that of the well-known real nozzle 20 described above. The sprayed water granules of the present invention are small in size due to the breaking effect of the water blocking pieces 34, 35, 36, and are smaller than those sprayed by the above-mentioned known hollow nozzle.

Taken together, the hollow nozzle of the present invention combines the advantages of the well-known solid-core nozzle and the well-known hollow nozzle, as well as eliminating the disadvantages of both, and is ideal for use. Design.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a longitudinal sectional view of the present invention.

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is a sectional view of a known hollow nozzle.

FIG. 5 is a cross-sectional view of a known real-core nozzle.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 hollow nozzle 11 eccentric water inlet 12 water outlet 20 real-centered nozzle 21 turbulent core 22 eccentric water inlet 23 spiral structure 24 water outlet 30 nozzle 31 eccentric water inlet 32 water outlet 33 flow guide plate surface 34 first stop water Piece 35 second round water stop piece 36 outermost circumference water stop piece 37 slope 40 water granule

Claims (8)

[Utility model registration claims] 1. A hollow nozzle having a hollow inside and communicating with an eccentric water inlet installed horizontally, wherein a flow guide plate surface on an outer periphery of a water outlet of the nozzle is expanded to form a plurality of nozzles on the expanded flow guide plate surface. Is provided, at least a portion of the water sprayed from the water outlet is repelled to each water-stopping piece and crushed into small granules, as well as being scattered and dropped to the center and the outer periphery of the water bundle, respectively. A hollow nozzle characterized in that the sprayed water flux is evenly distributed in a real-heart manner. 2. The hollow nozzle according to claim 1, wherein at least a part of the water blocking surface of the hollow nozzle has a substantially right angle with a spray direction of water. 3. The hollow nozzle according to claim 1, wherein in the hollow nozzle, a plurality of water-blocking pieces are disposed in at least two rounds depending on the position thereof. 4. The hollow nozzle according to claim 3, wherein, in the hollow nozzle, the first water blocking piece is uniformly disposed near the outer periphery of the water outlet. 5. In the hollow nozzle, the second circumferential water stop piece is located at a position appropriately spaced from the first circumferential water stop piece on the outer periphery of the first circumferential water stop piece, between the first circumferential water stop pieces. The hollow nozzle according to claim 4, wherein the nozzle is uniformly disposed so as to fill the gap. 6. The hollow nozzle according to claim 5, wherein, in the hollow nozzle, a distal end of the second circumferential water blocking piece has a slope having a high inside and a low outside. 7. The hollow nozzle according to claim 3, wherein an outermost water stop piece is provided at an outermost edge of a flow guide plate surface of the water outlet in the hollow nozzle. 8. The hollow nozzle according to claim 7, wherein the outermost water-stop piece of the hollow nozzle has a triangular sharp shape.