阅读说明：本技术 一种棒材多线切分轧制控制冷却装置 (Controlled cooling device for multi-line slitting rolling of bar ) 是由 王长生 肖立军 张忠峰 张红雁 郭其江 袁成玺 孟丽军 曹文强 于 2019-09-03 设计创作，主要内容包括：本发明涉及一种棒材多线切分轧制控制冷却装置,该棒材多线切分轧制控制冷却装置,包括多条并列设置的单线冷却装置,多条单线冷却装置设于同一固定水梁上,显著提高了棒材运行中线的对中精度,降低棒材堆钢风险,每条单线冷却装置包括沿棒材生产方向依次设置的过渡导槽、冷却结构和收集导槽,所述冷却结构包括水冷单元、反扑水单元和空过单元；从水冷单元和空过单元的结构设置,可以实现冷却喷嘴和空过管快速定位安装,将冷却喷嘴的第一装配座和空过管的第二装配座设置为相同结构,采用相同安装方式,可以实现冷却喷嘴和空过管在固定水梁上的不同分布,从而较为快速的调整生产工艺及生产误差,例如由连续冷却到间歇冷却工艺、线间温差等。(The invention relates to a bar multi-wire splitting rolling control cooling device, which comprises a plurality of single-wire cooling devices arranged in parallel, wherein the single-wire cooling devices are arranged on the same fixed water beam, so that the centering precision of a bar running center line is obviously improved, the bar steel piling risk is reduced, each single-wire cooling device comprises a transition guide groove, a cooling structure and a collecting guide groove which are sequentially arranged along the bar production direction, and the cooling structure comprises a water cooling unit, a water counter-beating unit and an air passing unit; from the structure setting of water-cooling unit and air passing unit, can realize that cooling nozzle and air passing pipe fix a position the installation fast, set up cooling nozzle's first assembly seat and air passing pipe's second assembly seat into the same structure, adopt the same mounting means, can realize that cooling nozzle and air passing pipe different distributions on fixed water beam to comparatively quick adjustment production technology and production error, for example by continuous cooling to intermittent type cooling technology, line difference in temperature etc..)

1. A controlled cooling device for multi-wire splitting rolling of a bar is characterized by comprising a plurality of single-wire cooling devices arranged in parallel, wherein the single-wire cooling devices are arranged on the same fixed water beam, each single-wire cooling device comprises a transition guide groove, a cooling structure and a collection guide groove which are sequentially arranged along the production direction of the bar, and the cooling structure comprises a water cooling unit, a water flapping unit and an air passing unit;

the water cooling unit comprises a first assembly seat arranged on the fixed water beam, a cooling nozzle is arranged on the first assembly seat, the cooling nozzle is provided with a water inlet and a first clamping table along the production direction of the bar, an annular convex part is connected outside the water inlet, the annular convex part is connected with a water inlet hole arranged on the first assembly seat in an embedded manner, the first clamping table is clamped with a clamping groove arranged on the first assembly seat, a pressing part for fastening the cooling nozzle on the first assembly seat is arranged on the first assembly seat, and the water cooling units of adjacent single lines share the first assembly seat;

the air passing unit comprises a second assembly seat installed on the fixed water beam, the second assembly seat is the same as the first assembly seat, an air passing pipe is installed on the second assembly seat, a plugging portion for plugging the water inlet hole and a second clamping table matched with the clamping groove are arranged on the air passing pipe, and the air passing units of adjacent single lines share the second assembly seat.

2. The controlled cooling device for multi-strand slitting rolling according to claim 1, wherein the cooling structure is composed of at least 1 minimum unit formed by at least 1 water cooling unit, at least 1 water counter-beating unit, at least 1 air passing unit, at least 1 water cooling unit and at least 1 water counter-beating unit, and the cooling structures of the adjacent single strands are the same.

3. The controlled cooling device for multi-strand slitting rolling according to claim 1, wherein the cooling structure is composed of at least 1 minimum unit formed by at least 1 water cooling unit, at least 1 counter water unit and at least 1 empty unit, and the cooling structures of the adjacent single wires are the same.

4. The controlled cooling device for multi-strand slitting rolling according to claim 1, wherein the cooling structure is composed of at least 1 minimum unit formed by at least 1 empty passing unit, at least 1 water cooling unit and at least 1 counter water unit, and the cooling structures of the adjacent single wires are the same.

5. The controlled cooling device for multi-wire slitting rolling according to any one of claims 1 to 4, wherein an empty pipe is provided between adjacent cooling nozzles of one of the single wires, and cooling nozzles are provided on the remaining single wires juxtaposed to the empty pipe.

6. The controlled cooling device for multi-wire slicing rolling according to claim 1, wherein a plurality of shields are fastened to the fixed water beam with the cooling structure in the bar production direction, and the cooling structure is disposed between the shields and the fixed water beam.

7. The controlled cooling device for multi-strand slitting rolling according to claim 1, wherein two adjacent water cooling units along the running direction of the bar share a first mounting seat, and two adjacent air passing units along the running direction of the bar share a second mounting seat.

8. The multi-wire cutting rolling control cooling device according to claim 1, wherein the cooling nozzle comprises an inlet guide pipe A, a box body A, an outlet guide pipe A and an outlet guide sleeve which are sequentially connected along a bar production direction, the tail end of the inlet guide pipe A and the initial end of the outlet guide pipe A extend into the box body A and form a water inlet seam A forming an acute angle with the bar production direction, a water inlet and an annular convex part are arranged at the bottom of the box body, a first clamping table is arranged on the outlet guide sleeve, the water inlet seam A is communicated with the water inlet, a plurality of gaskets are arranged between the inlet guide pipe A or/and the outlet guide pipe A and the box body A, and the size of the water inlet seam A is adjusted by increasing or decreasing the gaskets.

9. The multi-wire-splitting rolling control cooling device according to claim 1, wherein the water-repelling units comprise a third assembly seat mounted on the fixed water beam, a plurality of aligned reverse nozzles and guide pipes are mounted on the third assembly seat along the bar production direction, the reverse nozzles are used for preventing the bar from moving backwards and carrying water, and the water-repelling units of adjacent single wires share the third assembly seat.

10. The multi-wire cutting rolling control cooling device according to claim 1, wherein the transition guide groove comprises a transition plate and a cover plate, the top of the transition plate is provided with a first guide groove along the bar material running direction, the first guide grooves of adjacent single wires share the transition plate, the cover plate is arranged on the transition plate at the top of the first guide groove and forms a transition passage for the bar material to run together with the first guide groove, the cover plates of adjacent single wires share, the running tail end of the cover plate is fixedly connected with the transition plate, and the running starting end of the cover plate is closed with a movable cover of the transition plate.

Technical Field

The invention relates to the field of bar production, in particular to a controlled cooling device for multi-line slitting rolling of bars.

Background

In the multi-line cutting rolling production of the bar, a control cooling device is needed, is generally arranged between a K1 finishing mill group and a flying shear, and mainly comprises a transition guide groove, a water penetration cooling device and a collection guide groove which are sequentially arranged along the production direction of the bar. During actual production, the bar rolled by the K1 finishing mill set is transferred from the transition guide groove to the water cooling device for water cooling, and after cooling, the bar is gathered to flying shear operation through the collection guide groove.

The water cooling device comprises two sets of replaceable water cooling devices, wherein each set of water cooling device is provided with 7 sets of water penetrating pipes in the rolling direction, all the water penetrating pipes are arranged in one water penetrating box through circular pipe clamps, the water penetrating boxes are arranged on 2 moving trolleys, the moving trolleys are connected together through bolts, and one set of water penetrating pipes is driven to move to a working position through a hydraulic cylinder according to the process requirements when the water cooling device is used. Although the water penetration and cooling device can achieve the cooling effect, the following defects exist: firstly, 2 moving trolley structures are adopted, so that the water cooling device has poor front and back centering performance, steel piling accidents are easily caused, and the steel rolling production process is influenced; and the circular pipe clamp is easy to loosen after frequent movement, and the water penetrating pipe under high-pressure water supply is easy to deviate, so that centering is influenced, and the risk of steel piling is increased. Secondly, the cooling effect of the existing water cooling device is poor, when the multi-line bar is cooled, in order to facilitate cooling, the cooling water of the multi-line bar is controlled by a unified switch, so that all lines can supply water synchronously, but in actual cooling, because the rolling processes are different, for example, the error existing in the rolled center line bar and the rolled side line bar is about 5-6 ℃, the difference in temperature between all lines can occur due to manual centering installation error at the beginning of rolling, and the defects of inconsistent quality of the produced bar, high rejection rate and the like can be caused. Thirdly, when the existing water cooling device is worn to cool the bar, the water is brought seriously along with the operation of the bar, so that the surface of the bar is cooled unevenly, wave bends are generated, the quality of finished products is seriously influenced, and steel piling accidents are easily caused. Fourthly, the cooling effect is single, and the process requirements of sectional cooling according to different lengths cannot be met.

The existing transition guide groove adopts a fixed base structure, but the centering precision is poor due to the fact that the water tank penetrates through the guide groove to move back and forth, and the guide groove belongs to a long-term steel piling accident point.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides the bar multi-line splitting rolling control cooling device with high centering precision, which can prevent the bar from carrying water after being cooled by the cooling device, can realize the adjustment of the temperature difference between lines and the intermittent or continuous cooling of the bar through the distribution of the air passing units and the water cooling units on the fixed water beam, and solves the problems in the prior art.

The technical means adopted by the invention to solve the technical problems are as follows:

a controlled cooling device for multi-wire splitting rolling of a bar comprises a plurality of single-wire cooling devices which are arranged in parallel, wherein the single-wire cooling devices are arranged on the same fixed water beam, each single-wire cooling device comprises a transition guide groove, a cooling structure and a collecting guide groove which are sequentially arranged along the production direction of the bar, and the cooling structure comprises a water cooling unit, a water counter-pumping unit and an air passing unit;

the water cooling unit comprises a first assembly seat arranged on the fixed water beam, a cooling nozzle is arranged on the first assembly seat, the cooling nozzle is provided with a water inlet and a first clamping table along the production direction of the bar, an annular convex part is connected outside the water inlet, the annular convex part is connected with a water inlet hole arranged on the first assembly seat in an embedded manner, the first clamping table is clamped with a clamping groove arranged on the first assembly seat, a pressing part for fastening the cooling nozzle on the first assembly seat is arranged on the first assembly seat, and the water cooling units of adjacent single lines share the first assembly seat;

the air passing unit comprises a second assembly seat installed on the fixed water beam, the second assembly seat is the same as the first assembly seat, an air passing pipe is installed on the second assembly seat, a plugging portion for plugging the water inlet hole and a second clamping table matched with the clamping groove are arranged on the air passing pipe, and the air passing units of adjacent single lines share the second assembly seat.

By last knowing, this application adopts transition guide slot, cooling structure and collects the guide slot and installs on same fixed water beam, can improve each other to neutrality, reduces the rod and piles the steel risk, and from the structure setting of water cooling unit and air passing unit, can realize cooling nozzle and the quick location installation of air passing pipe. And set up the first assembly seat with cooling nozzle and the second assembly seat that empty pipe was managed to the same structure, adopt the same mounting means, can realize that cooling nozzle and empty pipe are in the different distributions on fixed water beam to comparatively quick adjustment production technology and production error, for example by continuous cooling to intermittent type cooling technology, line difference in temperature etc..

When the cooling structure is composed of at least 1 water cooling unit, at least 1 counter-water-beating unit, at least 1 air-passing unit, at least 1 water cooling unit and at least 1 counter-water-beating unit, and the cooling structure of the adjacent single lines is the same, the intermittent production of the bar can be realized, when the bar is produced, the bar is initially cooled by the water cooling unit, then is cooled again by the air-passing unit, wherein the counter-water-beating unit is used for preventing the bar cooled by the water cooling unit from carrying water backwards, the phenomenon of uneven cooling can be avoided, the phenomena of wave bending and the like caused by uneven cooling of the bar are further reduced, and the risk of steel piling is finally reduced. The number of the water cooling units is related to the bar process, and the lower the temperature of the cooling bed is at the later stage of the bar, the more the water cooling units are arranged along the production direction of the bar.

When the cooling structure is composed of at least 1 minimum unit formed by at least 1 water cooling unit, at least 1 water counterattack unit and at least 1 air passing unit, the cooling structure of adjacent single lines is the same, the continuous cooling production of the bar can be realized, wherein the water cooling unit is used for cooling the bar in a penetrating way, the water counterattack unit is used for preventing the bar from moving backwards and carrying water, and the air passing unit is used for guiding the bar to the collecting guide groove.

When the cooling structure comprises at least 1 minimum unit that 1 at least empty unit-1 at least water cooling unit-1 at least counter water unit formed, the cooling structure of adjacent single line is the same, can realize the continuous cooling production of rod, wherein the water cooling unit is used for the rod to wear the water-cooling, counter water unit is used for preventing the rod to move backward and take water, empty unit is used for the rod to lead to water cooling unit from the transition guide slot to can prevent to a certain extent that the water of water cooling unit from spraying to the temperature measuring device at transition guide slot end, influence its use.

When an empty pipe is arranged between adjacent cooling nozzles of one single line, and the cooling nozzles are arranged on the rest single lines parallel to the empty pipe, the adjustment of large temperature difference between the lines can be realized, for example, when a certain production process produces bars, the cooling temperature of one single line cooling device is lower than that of other single lines and is 15-20 ℃, the machine needs to be stopped, one cooling nozzle of the line is rapidly replaced by the empty pipe, and the temperature difference adjustment range of the single empty pipe is about 15-20 ℃, so that the temperature difference between the lines can be compensated, the uniform temperature production of each line is realized, and the quality of finished products is ensured.

Preferably, detain on the fixed water beam that is equipped with cooling structure and be equipped with a plurality of protection casings, cooling structure locates between fixed water beam and a plurality of protection casings, and the protection casing can play the guard action when piling the steel to can prevent that the waste water after the cooling nozzle cooling is used from splashing, and then improve the cooling water utilization ratio. Specifically, in order to facilitate the hoisting of the protective cover, a plurality of hoisting rings are arranged at the top of the protective cover; in order to accurately position the water beam with the fixed water beam, a buckling convex part is arranged on the fixed water beam, and a buckling cap which is matched with the buckling convex part and embedded is arranged on the protective cover.

In order to increase the sealing performance of the connection part of the water inlet hole, sealing rings are respectively arranged between the water inlet hole and the annular convex part and between the water inlet hole and the plugging part. For an empty pipe, the plugging effect is better, and the influence on the stability of water inlet pressure difference of other lines is avoided; for the cooling nozzle, the water supply effect is better, avoids extravagant and guarantees the pressure difference stability of intaking. Specifically, the plugging portion comprises a positioning block fixedly sleeved with the empty pipe, and a plugging clamping table is fixedly connected to the bottom of the positioning block.

Preferably, in order to reduce the number of installation units, two adjacent water cooling units along the running direction of the bar material can share the first assembly seat, and two adjacent empty units along the running direction of the bar material can share the second assembly seat.

Preferably, the cooling nozzle includes along entry pipe A, box body A, export pipe A and the export guide pin bushing that rod production direction connected gradually, be formed with cooling channel in entry pipe A, export pipe A and the export guide pin bushing respectively, be formed with the water cavity A with the cooling channel intercommunication in the box body A, entry pipe A's end and export pipe A's top stretch into in the water cavity A to form the water inlet seam A with rod production direction acutangular angle, the box body bottom is located to water inlet and annular convex part, first ka tai is located on the export guide pin bushing, water inlet seam A communicates cooling channel and water inlet, install a plurality of gaskets between entry pipe A and the box body A to adjust water inlet seam A size through increasing and decreasing gaskets. So set up, compare traditional screw thread regulation mode, can guarantee the uniformity of different cooling nozzle inflow or the quantitative inflow adjustment that realizes different cooling nozzles.

Because the rolled sidelines are contacted with air during rolling, the temperature of the bar of the sidelines is slightly lower than that of the bar of the central line, and the temperature difference is 5-6 ℃, therefore, when the bar is cooled, the central line water inflow needs to be increased. Because of the line differential temperature of the slitting rolling process itself, the shim adjustment is done here when the cooling nozzles are installed.

Wherein, in order to strengthen the intensity that export guide pin bushing and export pipe A are connected, export guide pin bushing can set up to following structure, and is specific, the guide pin bushing that exports includes the guide pin bushing body, guide pin bushing body top periphery side body coupling has the fixed plate, the fixed plate with export pipe A rigid coupling. And the starting end of the guide sleeve body penetrates through the fixing plate to form an embedded convex part, and the embedded convex part is matched and connected with an embedded groove formed in the outlet guide pipe.

In order to reduce the steel piling accident of the bars, the initial end of the cooling channel of the outlet guide sleeve, the initial end of the cooling channel of the outlet guide pipe A and the initial end of the cooling channel of the inlet guide pipe A are all annular bell mouths; for the sealing property of the connection of each part, sealing rings are respectively arranged between the outlet conduit A and the box body A, between the inlet conduit A and the box body A, and between the annular convex part and the water inlet hole.

Preferably, the water-flapping-units comprise a third assembly seat arranged on the fixed water beam, a plurality of centering reverse nozzles and guide pipes are arranged on the third assembly seat along the production direction of the bar material, the reverse nozzles are used for preventing the bar material from moving backwards and carrying water, the water-flapping-units on adjacent single lines share the third assembly seat, and each reverse nozzle comprises an inlet guide pipe B, a box body B and an outlet guide pipe B which are fixedly connected in sequence along the running direction of the bar material; the inlet guide pipe B and the outlet guide pipe B are respectively internally provided with a water blocking channel, the opposite ends of the inlet guide pipe B and the outlet guide pipe B are in shaft hole clearance fit to form a water inlet seam B communicated with the water blocking channel, and the water inlet direction of the water inlet seam B and the running direction of the bar material form an obtuse angle; the box body B, the inlet guide pipe B and the outlet guide pipe B are enclosed together to form a water cavity B communicated with the water inlet seam B, a water inlet B communicated with the water cavity B is formed in the box body B, and the water inlet B is communicated with a water inlet hole formed in the third assembling seat. Wherein the size of the water inlet gap B is adjusted in the same way as the water inlet gap A of the cooling nozzle.

The third assembling seat and the first assembling seat are different in the number of water inlet holes and the number of the pressing parts.

Preferably, a plurality of water inlet pipes are arranged on the side portion of the fixed water beam, a plurality of water inlet channels connected with the water inlet pipes are arranged at the top of the fixed water beam, and the water inlet channels are communicated with water inlet holes in the first assembly base, the second assembly base and the third assembly base to supply water.

Preferably, the transition guide groove comprises a transition plate and a cover plate, a first guide groove is formed in the top of the transition plate along the running direction of the bar, and the first guide grooves of adjacent single lines share one transition plate; the cover plate is arranged on the transition plate at the top of the first guide groove, the cover plates of adjacent single lines are shared and form a transition channel for the bar to run with the first guide groove, the running tail end of the cover plate is fixedly connected with the transition plate, and the running starting end of the cover plate is movably covered with the transition plate; wherein, for the angle that opens and shuts of restriction apron, the end of apron is equipped with spacing portion, is equipped with on the cab apron with spacing portion complex butt portion, spacing portion with butt portion laminating is in order to restrict the angle that opens and shuts of apron, so set up, can prevent that the apron from transitionally overturning and striking other equipment. And when the opening and closing angle of the cover plate is set to be larger than 90 degrees to 180 degrees, the carding bar is not influenced by the cover plate when the steel rolling accident happens. For the convenience of operation, a handle can be arranged at the top of the cover plate. In order to facilitate hoisting, a lifting hook can be arranged on the transition plate; in order to fix the transition plate, a fixed plate is fixedly connected to the bottom of the transition plate, and the fixed plate is connected with the fixed water beam through a bolt.

The collecting guide groove comprises a collecting base, a collecting plate and a second protective cover, and the collecting base is arranged on the fixed water beam; the collecting plate is fixedly arranged on the collecting base, a second guide groove is formed in the top of the collecting plate, the second guide grooves of adjacent single lines share one collecting plate, and the second guide grooves on the single lines are gathered from the starting end of the second guide groove to the tail end of the second guide groove along the running direction of the bar; the second protective cover is buckled on the collecting plate at the top of the second guide groove, and the second protective covers of the adjacent single lines share the second protective cover and form a channel for the bar to run with the second guide groove. Wherein, for the installation of the second protection casing of convenience, the top of second protection casing has set firmly the handle, and second protection casing lateral part is equipped with the second draw-in groove, be equipped with on the collecting plate with the spacing post of second draw-in groove complex. When the second draw-in groove to rod traffic direction slope setting, can make between the two be connected more firm along with the rod operation between second protection casing and the collecting plate. In order to reduce the steel piling probability, the initial end of the collecting channel is an annular horn mouth; for the installation of the entire collecting channel, a lifting ring is provided on the collecting channel. In practical use, the number of the collecting guide grooves can be set according to requirements, and the common conditions of steel rolling are generally 2 or 4.

Preferably, the pressing portion comprises support columns symmetrically and fixedly connected to two sides of the assembling seat, a cross beam is fixedly connected to the tops of the two support columns, a plurality of adjusting bolts are connected to the cross beam in a threaded mode, and the bottoms of the adjusting bolts penetrate through the cross beam and then abut against the tops of the cooling nozzles and the tops of the empty tubes. The one end of crossbeam is articulated with one of them support column, the other end of crossbeam and wherein another support column can be dismantled fixedly, the expansion end of crossbeam is equipped with the handle, so sets up, makes things convenient for empty piece and cooling nozzle replacement installation.

First assembly seat has set firmly a plurality of installation departments respectively with the bottom of collecting the base, and every installation department tip extends the lateral part setting of first assembly seat and collection base, be equipped with on the fixed water beam with installation department complex mounting groove, the installation department is restricted in the mounting groove through the stopper, stopper demountable installation is in the mounting groove. Wherein, because first assembly seat is heavier with collection base weight, for the ease of installation, set firmly rings on first assembly seat and collection base, when assembling it with fixed water beam, the installation after squatting is squat in the hoist and mount can.

In the above text, the various starting ends and the ending ends mentioned are opposite, the starting end is the bar entering end, and the ending end is the bar exiting end.

The invention adopts the structure, and has the advantages that:

1. the centering precision of the running center line of the bar is obviously improved by improving the structure of the control cooling device, and the cooling nozzle and the hollow pipe can be quickly positioned and installed by the structural arrangement of the water cooling unit and the hollow unit; and set up the first assembly seat with cooling nozzle and the second assembly seat that empty pipe was managed to the same structure, adopt the same mounting means, can realize that cooling nozzle and empty pipe are in the different distributions on fixed water beam to comparatively quick adjustment production technology and production error, for example by continuous cooling to intermittent type cooling technology, line difference in temperature etc..

2. The problem of water after the rod is cooled can be solved, and the wave bending phenomenon caused by uneven cooling of the surface of the rod is avoided, so that the steel piling accident caused by the uneven cooling of the surface of the rod is avoided, and the quality of finished products is improved.

3. The small-range temperature difference adjustment of each line can be realized through the adjustment of the water inlet seam of the cooling nozzle.

4. The centering precision of transition guide slot, collection guide slot respectively with cooling structure has been improved, the reduction piles steel risk.

Drawings

FIG. 1 is a schematic side view of the structure of embodiment 1 of the present invention;

FIG. 2 is a schematic top view of the portion of FIG. 1;

FIG. 3 is a left side view of the first mounting block and the cooling nozzle of FIG. 2;

FIG. 4 is a right side view of the first mounting block and the cooling nozzle of FIG. 2;

FIG. 5 is a schematic cross-sectional view of the cooling nozzle of FIG. 2;

FIG. 6 is a schematic view of the hollow tube of FIG. 3;

FIG. 7 is a schematic cross-sectional view of the reversing nozzle of FIG. 3;

FIG. 8 is a schematic top view of a portion of the transition channel of FIG. 1;

FIG. 9 is an enlarged view of part A of FIG. 1;

FIG. 10 is an enlarged view of the portion B in FIG. 1;

FIG. 11 is a schematic top view showing the structure of embodiment 2;

FIG. 12 is a schematic top view showing the structure of embodiment 3;

FIG. 13 is a schematic top view showing the structure of embodiment 4;

fig. 14 is a partial structural view of fig. 13.

In the figure, 1, a fixed water beam, 2, a transition guide groove, 3, a cooling structure, 4 and a collection guide groove;

11. buckling a convex part 12, a water inlet pipe 13 and a water inlet channel;

21. a transition plate 211, a first guide groove 212, a contact part 213 and a fixing plate;

22. a cover plate 221, a limiting part 222 and a handle;

31. the water cooling unit 311, the first assembling seat 3111, the water inlet hole 3112, the clamping groove 3113 and the pressing part; 312. the cooling nozzle, 3121, water inlet, 3122, first clamping table, 3123, annular projection, 3124, inlet conduit a, 3125, box body a, 3126, outlet conduit a, 3127, outlet guide sleeve, 3128, water cavity a, 3129, water inlet seam a;

32. the water counterattack unit 321, the third assembling seat 322, the reverse nozzle 3221, the inlet conduits B and 3222, the box bodies B and 3223, the outlet conduits B and 3224, the water inlet seams B and 3225, the water cavities B and 3226 and the water inlet B;

33. an empty passing unit 331, an empty passing pipe 3311, a blocking part 3312 and a second clamping platform; 332. a second mounting seat;

34. a protective cover 341 is buckled with a cap; 41. collect base, 42, collection board, 421, second guide slot, 422, spacing post, 43, second protection casing, 431, second draw-in groove.

Detailed Description

In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It should be noted that, in fig. 2, for convenience of understanding the present solution, the protective cover is not drawn on the cooling structure along the production direction of the bar, and a partial top view of the cooling structure can be directly seen when a part of the fixed water beam is exposed; the collection channel does not depict the second guard formation. In fig. 8, two transition channels are shown in succession for the sake of easy understanding of the transition channel structure, wherein the cover structure of one transition channel is not shown.