CN212030317U

CN212030317U - Spray head for cooling tower

Info

Publication number: CN212030317U
Application number: CN202020128734.9U
Authority: CN
Inventors: 黄海洋; 谢海燕; 凌江; 钟钱清; 刘翼虎
Original assignee: Zhejiang Lianfeng Cooling Tower Co ltd
Current assignee: Zhejiang Lianfeng Cooling Tower Co ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-11-27
Anticipated expiration: 2030-01-20

Abstract

The utility model provides a shower nozzle for cooling tower belongs to circulating water cooling tower field. The problem that in the prior art, longitudinal diffusivity is small, the hollow phenomenon cannot be completely avoided, and heat exchange efficiency of a cooling tower is not high is solved. The utility model comprises a nozzle, a drainage cover, a water splashing disc, a dividing disc and a water dividing block which are coaxially arranged from top to bottom; the nozzle is provided with an external thread and an internal thread for installing the drainage cover; the drainage cover comprises a first limber hole and a plurality of water distribution holes which are uniformly arranged along the circumferential direction of the drainage cover; the splash plate comprises a second water through hole coaxial with the first water through hole and a plurality of water distribution teeth uniformly arranged on the circumferential edge of the splash plate; the distribution disc comprises a third water through hole coaxial with the second water through hole and a plurality of water distribution gaps uniformly arranged along the circumferential direction of the distribution disc; the water diversion block comprises a plurality of water diversion strips and water drainage holes which are uniformly arranged along the circumferential direction of the water diversion block. The utility model has the advantages of the vertical diffusivity is bigger, the cavity phenomenon has significantly reduced.

Description

Spray head for cooling tower

Technical Field

The utility model belongs to circulating water cooling tower field, concretely relates to shower nozzle for cooling tower.

Background

In the cooling tower industry, the pipe type water distribution or pipe and groove combined water distribution splashing device generally adopts various forms of spray heads, in particular to a splashing device for large-flow cooling tower water distribution.

In the water distribution apparatus of the cooling tower, in consideration of economic operation efficiency and cost, it is common to employ a reflection type or a spray head in which a spray nozzle is separated from a splash plate, such as a pipe-disk type splash apparatus, a multi-layer splash head, a single-layer splash head, and the like. The spray heads are composed of spray nozzles and splash plates. The water flow is sprayed out from the nozzle, and is sprayed on the splash plate, and is uniformly scattered in a water drop shape after the reflection action.

The three-splash type spray head disclosed in the publication No. CN201011486Y is provided with a large splash plate, a small splash plate and a conical water head from top to bottom respectively, and large sawteeth and small sawteeth which are arranged circumferentially are arranged on the outer rings close to the large splash plate and the small splash plate respectively; the teeth of the large saw teeth on the large water splashing disc are triangular tooth blocks with one arc side, and the small saw teeth on the small water splashing disc are rectangular teeth; the bottom of the conical water splitting head is provided with a dentate gap water tank. The water sprayed by the spray head is obviously divided into three layers, the gap between the water sprayed by each water splashing plate is large and obvious, and the water sprayed by each water splashing plate has small diffusivity in the longitudinal direction, so that the water sprayed in unit time is large in water drop and small in quantity; in addition, although the conical water splitting head can reduce the hollow phenomenon of water spraying of the spray head, the conical water splitting head still has hollow, so that the hollow phenomenon cannot be completely avoided; finally, the heat exchange efficiency of the cooling tower is not high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that exists among the prior art, provide a shower nozzle that is used for cooling tower that vertical diffusivity is bigger, the cavity phenomenon that has significantly reduced.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme: a spray head for a cooling tower comprises a spray nozzle, a flow guide cover, a water splashing disc, an even distribution disc and a water distribution block which are coaxially arranged from top to bottom; the nozzle is provided with an external thread and an internal thread for installing the drainage cover; the drainage cover comprises a first limber hole and a plurality of water distribution holes which are uniformly arranged along the circumferential direction of the drainage cover; the splash plate comprises a second water through hole coaxial with the first water through hole and a plurality of water distribution teeth uniformly arranged on the circumferential edge of the splash plate; the distribution disc comprises a third water through hole coaxial with the second water through hole and a plurality of water distribution gaps uniformly arranged along the circumferential direction of the distribution disc; the water diversion block comprises a plurality of water diversion strips and water drainage holes which are uniformly arranged along the circumferential direction of the water diversion block. After the spray head is arranged on a water distribution device through an external thread on a nozzle, when water flows, water flows in from the nozzle, when the water flows in a drainage cover below the nozzle, part of the water flows in a splash pan below from a water distribution hole, the water flow impacts the splash pan and splashes, part of the water flows to the edge of the splash pan and is divided into uniform water flows by a water distribution tooth and then falls in a cooling filler below, the contact area of the water and air and the diffusivity in the longitudinal direction are increased, the rest water directly flows in a first water distribution hole and flows in a second water distribution hole to an equalizing pan, the diameter of the rest water is smaller than that of the nozzle due to the first water distribution hole, so that the flow speed is accelerated, and the impact force on the equalizing pan is larger and the longitudinal diffusivity is larger by matching with gravity, the other part of the water flows in the lower cooling filler from a water distribution gap, and the water is uniformly divided and thinner, and reduced the cavity phenomenon of shower nozzle water spray, remaining water continues to fall into the water diversion piece of below from the third through hole on, the water diversion strip on the water diversion piece can subdivide and sputter last partial rivers outside to the circumference, and the part is gone down through being subdivided into tiny water droplet through the wash port along the water diversion piece surface along the while, has solved almost completely and has avoided the cavity phenomenon, finally makes the heat transfer effect of cooling tower improve.

Furthermore, the water splashing disc is provided with a first inclined plane protruding towards the middle, and the first inclined plane is over against the water distribution hole above. The water of diversion hole strikes on first inclined plane for it is more even to strike the water on the first inclined plane, then the part splash that flies out earlier, more be along first inclined plane down flow to the diversion tooth, through the diversion tooth spill outside the circumference, not only the diffusibility is high, and the water droplet is littleer moreover.

Furthermore, the diameters of the second water through hole and the third water through hole are gradually reduced, and the diameter of the first water through hole is smaller than or equal to that of the second water through hole. When rivers fall into down from first limbers, can directly pass the second limbers, cause the water fall bigger, the velocity of flow is also faster, and the sputter area is bigger, and water also disperses, and vertical diffusivity is big, and when water fell from the third limbers in addition, the velocity of flow is the fastest, and in addition the action of gravity, impact force to the piece of dividing is great, and hydroenergy can be by the piece of dividing on the piece of dividing divide the piece divide the strip to the piece circumference of dividing evenly spread outside.

Furthermore, the uniform distribution disc is provided with a second inclined plane which is sunken towards the center, and the second water through hole is provided with a circle of chamfer. When rivers fall into on the equipartition dish, can concentrate water to central zone through the second inclined plane, most water still falls down from dividing the water gap, has reduced the cavity phenomenon greatly for rivers do not spread outwards with one taste.

Furthermore, the water diversion block is also rotatably provided with a water diversion fan, the water diversion fan is provided with a plurality of uniformly arranged blades, and the blades are provided with water flushing grooves. When water flow impacts the blades on the water distribution fan, the blades can rotate through the water flow impact water flushing groove, so that the water flow is spirally sprayed to the periphery, the longitudinal sputtering diffusion is farther, and part of the water flow is uniformly distributed on the water distribution block below by the water distribution strips and the water discharge holes.

Furthermore, the top of the water diversion fan is also provided with a conical head. The conical hole can well divide the water flow, so that the water flow in the center can be splashed onto the blades in the circumferential direction.

Furthermore, the section of the water distribution tooth is trapezoidal. Trapezoidal acute angle is up, and rivers impact acute angle department can be shunted well, has improved the diffusion effect.

Furthermore, the water diversion block further comprises a third inclined plane which is a conical protrusion, the water diversion strip is arranged on the third inclined plane, and the third inclined plane is further provided with a through hole for rotatably mounting the water diversion fan. The third inclined plane can make the rivers that strike on the third inclined plane, and most flows to the wash port along with the third inclined plane, and the wash port is along the edge of even densely covered and water distribution piece for rivers can be subdivided into on the filler of less water droplet or rivers fall into the below, because the diameter of water distribution piece is minimum simultaneously, make the cavity phenomenon reduce greatly.

Further, nozzle, drainage cover, equally divide and set and divide and link firmly through the bracing piece between the water distribution piece, just nozzle, drainage cover, equally divide set, water distribution piece and bracing piece form for integrated into one piece. The manufacturing method of the integrated molding is suitable for mass production.

Further, the spray head is made of ABS. ABS plastic is a tough, hard and rigid material with easily available raw materials, good comprehensive performance, low price and wide application. ABS plastics are widely applied to the manufacturing industries of machinery, electricity, textiles, automobiles, airplanes, ships and the like and the chemical industry, so that the ABS plastics are very suitable for being used as materials for manufacturing the spray nozzle.

Compared with the prior art, the spray head for the cooling tower adopting the technical scheme has the following beneficial effects:

the utility model discloses a shower nozzle for cooling tower has following advantage:

1: the nozzle, the drainage cover, the water splashing disc, the even distribution disc and the water distribution block are matched, so that the longitudinal diffusion degree of water flow is larger, the hollow phenomenon is greatly reduced, and the heat exchange efficiency of the cooling tower is high;

2: the water is divided into two parts by the drainage cover, and one part of the water directly passes through the water distribution disc from the second water through hole, so that the water flow fall is larger, the flow speed is faster, the sputtering area is larger, the water is more dispersed, and the longitudinal diffusivity is large;

3: the diameter of the first water through hole is smaller than that of the nozzle, so that the flow speed is accelerated, the impact force on the uniform distribution disc is larger by matching with gravity, and the longitudinal diffusivity is larger.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is an isometric cross-sectional schematic view of the present invention;

fig. 4 is a schematic cross-sectional view of the present invention;

fig. 5 is an enlarged view of a in fig. 1.

In the figure, 1, a nozzle; 2. a drainage cover; 3. a splash pan; 4. uniformly distributing; 5. a water diversion block; 21. a first water passage hole; 22. water distribution holes; 31. a second water through hole; 32. water diversion teeth; 41. a third water through hole; 42. a water diversion gap; 51. water dividing strips; 52. a drain hole; 33. a first inclined surface; 43. a second inclined surface; 44. chamfering; 6. a water diversion fan; 61. a blade; 62. a water flushing tank; 63. a conical head; 53. a third inclined surface; 54. a through hole; 7. a support rod.

Detailed Description

The following are specific embodiments of the present invention and are made by combining the drawings

Further, the present invention is not limited to these examples.

As shown in fig. 1-5, the spray head for the cooling tower comprises a spray nozzle 1, a flow guide cover 2, a splash plate 3, an even distribution plate 4 and a water distribution block 5 which are coaxially arranged from top to bottom; the nozzle 1 is provided with external threads and internal threads for installing the drainage cover 2; the drainage cover 2 comprises a first limber hole 21 and a plurality of water distribution holes 22 which are uniformly arranged along the circumferential direction of the drainage cover 2; the splash pan 3 comprises a second water through hole 31 coaxial with the first water through hole 21 and a plurality of water distribution teeth 32 uniformly arranged on the circumferential edge of the splash pan 3; the uniform distribution disc 4 comprises a third through water hole 41 coaxial with the second through water hole 31 and a plurality of water distribution gaps 42 uniformly arranged along the circumferential direction of the uniform distribution disc 4; the water diversion block 5 includes a plurality of water diversion strips 51 and water discharge holes 52 uniformly arranged along the circumferential direction of the water diversion block 5.

Preferably, the nozzle 1, the drainage cover 2, the equal distribution disc 4 and the water distribution block 5 are fixedly connected through a support rod 7, and the nozzle 1, the drainage cover 2, the equal distribution disc 4, the water distribution block 5 and the support rod 7 are integrally formed. The manufacturing method of the integrated molding is suitable for mass production.

Preferably, the nozzle is made of ABS. ABS plastic is a tough, hard and rigid material with easily available raw materials, good comprehensive performance, low price and wide application. ABS plastics are widely applied to the manufacturing industries of machinery, electricity, textiles, automobiles, airplanes, ships and the like and the chemical industry, so that the ABS plastics are very suitable for being used as materials for manufacturing the spray nozzle.

Preferably, the distribution teeth 32 are trapezoidal in cross-section. Trapezoidal acute angle is up, and rivers impact acute angle department can be shunted well, has improved the diffusion effect.

After the spray head is arranged on a water distribution device through the external thread on the nozzle 1, when water is supplied, water flows enter from the nozzle 1, when the water flows enter a drainage cover 2 below the nozzle 1, part of the water flows fall onto a splash pan 3 below from a water diversion hole 22, the water impacts the splash pan 3 to splash, part of the water flows onto the edge of the splash pan 3 and is divided into uniform water flows by a water diversion tooth 32 to fall onto a cooling filler below, the contact area of the water and air and the diffusion degree in the longitudinal direction are increased, the rest water directly flows from a first water through hole 21 to a distribution pan 4 through a second water through hole 31, the diameter of the rest water is smaller than that of the nozzle 1, the flow speed is accelerated, the impact force on the distribution pan 4 is larger and the longitudinal diffusion degree is larger by matching with gravity, the other part of the water flows onto the cooling filler below from a water diversion gap 42, the water of this moment is equallyd divide more thinly, has reduced the cavity phenomenon of shower nozzle water spray moreover, and remaining water continues to fall into on the water diversion piece 5 of below from third through water hole 41, and the water diversion strip 51 on the water diversion piece 5 can subdivide and sputter outside the circumference with last partial rivers, and the part is gone down through being subdivided into thin water droplet through passing through wash port 52 along the water diversion piece 5 surface simultaneously, has solved almost completely and has avoided the cavity phenomenon, finally makes the heat transfer effect of cooling tower improve.

Specifically, the water diversion block 5 is further rotatably provided with a water diversion fan 6, the water diversion fan 6 is provided with a plurality of uniformly arranged blades 61, and the blades 61 are provided with water flushing grooves 62. When water flow impacts the blades 61 on the water distribution fan 6, the blades 61 can rotate through the water flow impacting the water flushing groove 62, so that the water flow is sprayed to the periphery in a spiral mode and is splashed to a greater extent longitudinally, and part of the water flow flows onto the water distribution block 5 below and is evenly distributed by the water distribution strips 51 and the water drainage holes 52.

Specifically, the top of the water diversion fan 6 is also provided with a conical head 63. This conical hole divides the water flow well so that the central water flow can be splashed onto the circumferential vanes 61.

Specifically, the splash plate 3 has a first inclined surface 33 protruding toward the center, and the first inclined surface 33 faces the water distribution hole 22 above. The water of the diversion holes 22 impacts the first inclined surface 33, so that the water impacting the first inclined surface 33 is more uniform, then part of water splash is splashed firstly, more water flows downwards along the first inclined surface 33 to the diversion teeth 32, and is sprinkled outwards through the diversion teeth 32, and not only is the diffusivity high, but also the water drops are smaller.

Specifically, the distribution plate 4 has a second inclined surface 43 recessed toward the center, and the second through-water hole 31 is provided with a round of chamfer 44. When the water flow falls into the equal-dividing disc 4, the water can be concentrated to the central area through the second inclined surface 43, most of the water still falls from the water-dividing gap 42, the hollow phenomenon is greatly reduced, and the water flow is not diffused outwards in a single taste.

Specifically, the water diversion block 5 further comprises a third inclined surface 53 which is a conical protrusion, the water diversion strip 51 is arranged on the third inclined surface 53, and the third inclined surface 53 is further provided with a through hole 54 for rotatably mounting the water diversion fan 6. The third inclined plane 53 can make the water flow on the third inclined plane 53 strike, and most of the water flow flows to the drain hole 52 along with the third inclined plane 53, and the edge of the drain hole 52 along the even dense distribution and the water distribution block 5 makes the water flow be subdivided into smaller water drops or fall into the filler below, and simultaneously because the diameter of the water distribution block 5 is minimum, makes the hollow phenomenon greatly reduced.

Specifically, the diameters of the second through hole 31 and the third through hole 41 are gradually reduced, and the diameter of the first through hole 21 is smaller than or equal to the diameter of the second through hole 31. When rivers fall into down from first limbers 21, can directly pass second limbers 31, cause the water fall bigger, the velocity of flow is also faster, and the sputter area is bigger, and water also disperses, and vertical diffusivity is big, and when water fell from third limbers 41 in addition, the velocity of flow is the fastest, and with the action of gravity, the impact force to dividing piece 5 is great, and the hydroenergy can be divided strip 51 by dividing piece 5 and evenly spread outside 5 circumferences of dividing.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms such as the nozzle 1, the flow guide cover 2, the splash pan 3, the distribution pan 4, the distribution block 5, the first water passage hole 21, the distribution hole 22, the second water passage hole 31, the distribution teeth 32, the third water passage hole 41, the distribution gap 42, the distribution bar 51, the water discharge hole 52, the first inclined surface 33, the second inclined surface 43, the chamfer 44, the distribution fan 6, the blade 61, the flushing groove 62, the tapered head 63, the third inclined surface 53, the through hole 54, the support rod 7, and the like are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A spray head for a cooling tower is characterized by comprising a spray nozzle (1), a flow guide cover (2), a splash plate (3), an equalizing plate (4) and a water distribution block (5) which are coaxially arranged from top to bottom; the nozzle (1) is provided with an external thread and an internal thread for installing the drainage cover (2); the drainage cover (2) comprises a first limber hole (21) and a plurality of water distribution holes (22) which are uniformly arranged along the circumferential direction of the drainage cover (2); the splash plate (3) comprises a second water through hole (31) coaxial with the first water through hole (21) and a plurality of water distribution teeth (32) uniformly arranged on the circumferential edge of the splash plate (3); the uniform distribution disc (4) comprises a third through water hole (41) coaxial with the second through water hole (31) and a plurality of water distribution gaps (42) uniformly arranged along the circumferential direction of the uniform distribution disc (4); the water distribution block (5) comprises a plurality of water distribution strips (51) and water discharge holes (52) which are uniformly arranged along the circumferential direction of the water distribution block (5).

2. Spray head for a cooling tower according to claim 1, characterised in that the splash plate (3) has a first inclined surface (33) which is convex towards the middle, and that the first inclined surface (33) faces the water distribution openings (22) above.

3. A spray head for a cooling tower according to claim 1, wherein the diameters of said second and third through holes (31, 41) are gradually reduced, and the diameter of said first through hole (21) is smaller than or equal to the diameter of said second through hole (31).

4. Spray head for a cooling tower according to claim 1, characterised in that said averaging disc (4) has a second inclined surface (43) recessed towards the centre and said second through hole (31) is provided with a chamfer (44).

5. Spray head for a cooling tower according to claim 1, characterised in that said water diversion block (5) is also rotatably mounted with a water diversion fan (6), and said water diversion fan (6) has a plurality of uniformly arranged blades (61), said blades (61) being provided with flushing channels (62).

6. Spray head for a cooling tower according to claim 5, characterised in that the top of said fan (6) is also provided with a conical head (63).

7. Spray head for a cooling tower according to claim 1, characterised in that said tapping tooth (32) has a trapezoidal cross-section.

8. A nozzle for a cooling tower according to claim 5, characterized in that said water diversion block (5) further comprises a third inclined surface (53) having a conical protrusion, and said water diversion strip (51) is disposed on said third inclined surface (53), said third inclined surface (53) further having a through hole (54) for rotatably mounting said water diversion fan (6).

9. A nozzle for a cooling tower according to claim 1, wherein said nozzle (1), said flow guiding cover (2), said water dividing plate (4) and said water dividing block (5) are fixedly connected by a support rod (7), and said nozzle (1), said flow guiding cover (2), said water dividing plate (4), said water dividing block (5) and said support rod (7) are integrally formed.

10. The spray head of claim 1, wherein the spray head is made of ABS.