CN115415342A - Pinch roll type ultrahigh-pressure small-flow descaler - Google Patents

Abstract

The invention provides a pinch roll type ultrahigh-pressure small-flow descaling machine, and relates to the technical field of descaling. The pinch roll type ultrahigh pressure low-flow descaling machine comprises a rack, an upper descaling pipe, a lower descaling pipe, a driving assembly, a low-flow ultrahigh pressure nozzle assembly and a steam descaling header, wherein a plurality of low-flow ultrahigh pressure nozzle assemblies which are distributed in a highly dense mode are arranged in the axial direction of the upper descaling header and the lower descaling header, and the descaling heights of the small-flow ultrahigh pressure nozzle assemblies are set to be low, so that the small-flow ultrahigh pressure nozzle assemblies form a highly dense and low-height arrangement mode, and after the flow of descaling water is reduced, the small-flow descaling water has the characteristic of being high in density and low in height by virtue of the small-flow ultrahigh pressure nozzle assemblies, the hitting force of the small-flow descaling water on an oxide layer on the surface of a steel billet is improved, meanwhile, the steam descaling pipe can rapidly blow off water staying on the surface of the steel billet, so that the influence of the flow of the descaling water on the reduction of the temperature of the steel billet is reduced, and the descaling effect is improved.

Description

Pinch roll type ultrahigh-pressure small-flow descaler

Technical Field

The invention relates to the technical field of descaling equipment, in particular to a pinch roll type ultrahigh-pressure small-flow descaling machine.

Background

When the steel billet is finely rolled, high-pressure water descaling needs to be carried out on the steel billet. When the high-pressure water is used for descaling, the high-pressure water generated by the high-pressure water pump enters the descaling nozzle, and under the action of the nozzle, the high-pressure water forms a fan-shaped water beam with high impact force and is sprayed to the surface of a steel billet (or an intermediate billet) to clean the scale.

At present, in a conventional descaling machine, the distance between adjacent descaling nozzles is about 60mm, the nozzle flow is about 50L/min, the descaling height is 100mm, the nozzle flow is large, the temperature of a steel billet is reduced too fast, the subsequent rolling of the steel billet is influenced, and the descaling effect is poor. In addition, when steel blanks with different thicknesses are subjected to high-pressure water descaling, the high-pressure water descaling is usually performed on the steel blanks with different thicknesses through the rotation of the descaling nozzle, but the rotation of the descaling nozzle changes the spray angle, so that the impact force of descaling water is changed, the descaling impact effect is poor, and the good descaling effect cannot be achieved on the steel blanks with different thicknesses.

Disclosure of Invention

The invention solves the problems that: how to solve the problem of poor descaling striking effect in the related technology.

In order to solve the problems, the invention provides a pinch roll type ultrahigh pressure small flow descaler, which comprises a frame, wherein a descaling roller way is arranged on the frame; the descaling pipe group comprises an upper descaling pipe and a lower descaling pipe, the upper descaling pipe is positioned above the descaling roller way, and the lower descaling pipe is positioned below the descaling roller way and arranged on the rack; the driving assembly is arranged on the rack and is in driving connection with the upper descaling pipe so as to drive the upper descaling pipe to move in a reciprocating linear mode in the direction towards or away from the descaling roller way; the descaling height of the small-flow ultrahigh-pressure nozzle assembly is set to be a low descaling height, and a plurality of small-flow ultrahigh-pressure nozzle assemblies which are distributed in a highly dense mode are arranged in the axial direction of the upper descaling pipe and the lower descaling pipe; the steam descaling header is communicated with a steam source, is arranged at intervals with the upper descaling pipe in the extending direction of the descaling roller way, and is connected with the rack; the upper descaling pipe and the lower descaling pipe are respectively communicated with a water source through water pipes.

Optionally, go up the scale removal pipe with all include pipe body and nozzle assembly on the scale removal pipe down, nozzle assembly includes mounting panel, adjusting block, guard plate and nozzle, the mounting panel with this body coupling of pipe, the adjusting block the guard plate with the nozzle one-to-one is provided with a plurality ofly, and all follows the axis direction of pipe body sets up on the mounting panel, the nozzle runs through the adjusting block with the mounting panel with this body intercommunication of pipe, the guard plate sets up on the adjusting block and with the mounting panel is connected, just be provided with the nozzle hole on the guard plate, the nozzle hole with the nozzle intercommunication.

Optionally, the steam descaling header comprises a multi-channel flat air nozzle and a steam pipe, the multi-channel flat air nozzle is communicated with the steam pipe and symmetrically arranged along the length direction of the steam pipe, and the steam pipe is arranged on the rack and is used for being communicated with an air source.

Optionally, the frame is further provided with a descaling box, the descaling box comprises an upper descaling box and a lower descaling box which are communicated with each other, two ends of the upper descaling pipe extend out of the upper descaling box and are connected with the driving assembly, the lower descaling pipe is arranged in the lower descaling box, the upper descaling box and the lower descaling box are detachably connected, and the lower descaling box is connected with the frame.

Optionally, the pinch roll type ultrahigh-pressure small-flow descaler further comprises a water collecting cover communicated with the descaling box, the water collecting cover is arranged above the descaling roll table and connected with the rack, and the water collecting cover is used for collecting descaling water sprayed by the upper descaling pipe and the lower descaling pipe.

Optionally, a water collecting tank, a first flow guide wall and a second flow guide wall are arranged in the water collecting cover, the water collecting tank is located above the descaling roller way and is bent downwards, the first flow guide wall is located above the water collecting tank, the second flow guide wall is located between the first flow guide wall and the water collecting tank, and the first flow guide wall and the second flow guide wall are both bent upwards.

Optionally, the water collecting cover further comprises an air cylinder, a rotating shaft, a first water baffle and a connecting rod, the rotating shaft is located between the water collecting tank and the descaling roller way and hinged to the water collecting cover, one end of the first water baffle is connected with the rotating shaft, the other end of the first water baffle deviates from the rotating shaft and extends, the air cylinder is hinged to the water collecting cover and is in driving connection with the connecting rod, and the connecting rod is in transmission connection with the rotating shaft.

Optionally, the pinch roller type ultrahigh pressure small flow descaler further comprises a second water baffle, one end of the second water baffle is clamped with the upper descaling pipe, the other end of the second water baffle extends upwards, and a through hole is formed in the position, corresponding to the nozzle assembly, of the second water baffle.

Optionally, the pinch roll type ultrahigh pressure small flow descaling machine further comprises a pinch roll assembly, the pinch roll assembly is located on one side, away from the upper descaling pipe, of the steam descaling header, the pinch roll assembly comprises a hydraulic cylinder, an upper clamping roll and a lower clamping roll, the hydraulic cylinder is connected with the frame, the descaling roller table is located between the upper clamping roll and the lower clamping roll, the upper clamping roll is located above the lower clamping roll, the upper clamping roll and the lower clamping roll are respectively connected with the frame through a driving assembly, and the hydraulic cylinder is in driving connection with the upper clamping roll so as to drive the upper clamping roll to move in a direction perpendicular to the descaling roller table.

Optionally, the pinch-roller type ultrahigh-pressure small-flow descaler further comprises an observation window, and the observation window is arranged on the upper descaling box.

Compared with the prior art, the pinch roll type ultrahigh pressure small flow descaling machine has the advantages that the descaling roller way is arranged on the rack, steel blanks can move in the finish rolling descaling machine, when the steel blanks pass through the upper descaling pipe and the lower descaling pipe under the driving of the descaling roller way, the upper descaling pipe and the lower descaling pipe are respectively communicated with a water source through water pipes, the upper descaling pipe is positioned above the descaling roller way, the lower descaling pipe is positioned below the descaling roller way, and the scale can be simultaneously removed from the upper end and the lower end of the steel blanks, so that the descaling efficiency is improved, and in the descaling process, a plurality of small flow nozzle assemblies which are highly densely distributed are arranged in the axial direction of the upper descaling pipe and the lower descaling pipe, the descaling height of the small flow ultrahigh pressure nozzle assemblies is set to be low, so that the small flow nozzle assemblies form a setting mode with high density and low density, and high flow and low flow effect of descaling is guaranteed by means of the small flow nozzle assemblies, and the temperature difference of the high flow and low flow of the descaling effect of the rolled steel blanks on the ultrahigh pressure of the rolled steel blanks is guaranteed, and the high flow of the descaling head is low flow of the rolled steel blanks, and the high flow of the descaling flow and the high flow of the descaling head is low flow, so that the descaling head is low flow of the descaling head is controlled; after descaling, the water drops on the surface of the billet are removed before and after descaling through the steam descaling header which is communicated with the air source, so that the speed of reducing the temperature of the billet is delayed, and the descaling effect is further improved; and the driving assembly is arranged on the rack and is in driving connection with the upper descaling pipe to drive the upper descaling pipe to move in a reciprocating linear mode towards or away from the descaling roller way, so that the lower descaling pipe is kept still under the support of the rack when the thickness of the steel blank changes in a reaction manner, the driving assembly realizes the adjustment of the position of the upper descaling pipe in the vertical direction, the impact position and the striking force of descaling water sprayed by the upper descaling pipe and the lower descaling pipe on the steel blank can be kept consistent, the influence of the thickness of the steel blank on the water descaling effect is reduced, and the descaling effect of the finish rolling descaling machine is improved.

Drawings

FIG. 1 is an assembly view of a pinch roll type ultra high pressure low flow descaler in an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a pinch roll type ultra high pressure low flow descaler in an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at G;

FIG. 4 is an enlarged view of a portion of FIG. 1 at H;

FIG. 5 is a schematic view of the assembly of a steam descaling header according to the embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at I;

FIG. 7 is a schematic view of a steam descaling header according to an embodiment of the invention;

FIG. 8 is an assembly view of the upper descaling pipe and the second dam according to the embodiment of the present invention;

FIG. 9 is a schematic view showing the structure of an upper descaling pipe and a lower descaling pipe according to the embodiment of the present invention;

FIG. 10 is an exploded view of FIG. 9;

fig. 11 is a cross-sectional view of fig. 9.

Description of reference numerals:

100-a frame; 110-descaling roller way; 111-a roller;

200-a descaling box; 210-upper descaling pipe; 220-lower descaling pipe; 230-an upper descaling box; 231-a second water baffle; 2311-a through hole; 232-elongated holes; 233-closing plate; 240-lower descaling box;

300-a drive assembly;

400-steam descaling header; 410-flat air nozzle; 420-steam pipe; 500-a tube body; 510-a groove; 520-a guide plate;

600-small flow ultra high pressure nozzle assembly; 610-a mounting plate; 620-adjusting block; 630-protective plate; 631-a communication hole; 640-a nozzle;

700-a water collecting cover; 710-a mask body; 720-water collecting tank; 730-a first flow guide wall; 740-a second flow guide wall; 750-cylinder; 760-a rotating shaft; 770-a first water baffle; 780-connecting rod; 781-connecting members; 782-a sleeve;

800-pinch roll assembly; 810-hydraulic cylinders; 820-upper nip rolls; 830-a lower nip roll;

900-observation window; 10-a drive member; 20-a water pipe; a-the first splash plate rotation position.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to "an embodiment," "one embodiment," "some embodiments," "exemplary" and "one embodiment" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or embodiment is included in at least one embodiment or embodiment of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or implementation. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

The terms "first", "second", etc. 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 at least one of the feature.

In the drawings, the Z-axis represents the vertical, i.e., up-down, position, and the positive direction of the Z-axis (i.e., the arrow direction of the Z-axis) represents up, and the negative direction of the Z-axis (i.e., the direction opposite to the positive direction of the Z-axis) represents down; in the drawings, the X-axis represents a horizontal direction and is designated as a left-right position, and a positive direction of the X-axis (i.e., an arrow direction of the X-axis) represents a left side and a negative direction of the X-axis (i.e., a direction opposite to the positive direction of the X-axis) represents a right side; in the drawings, the Y-axis indicates the front-rear position, and the positive direction of the Y-axis (i.e., the arrow direction of the Y-axis) indicates the front side, and the negative direction of the Y-axis (i.e., the direction opposite to the positive direction of the Y-axis) indicates the rear side; it should also be noted that the foregoing Z-axis, Y-axis, and X-axis representations are merely intended to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

Referring to fig. 1 to 3 and 5, a finish rolling descaler according to an embodiment of the present invention includes a frame 100 having a descaling roller table 110; the descaling pipe group comprises an upper descaling pipe 210 and a lower descaling pipe 220, the upper descaling pipe 210 is positioned above the descaling roller way 110, and the lower descaling pipe 220 is positioned below the descaling roller way 110 and arranged on the rack 100; the driving assembly 300 is arranged on the frame 100 and is in driving connection with the upper descaling pipe 210 so as to drive the upper descaling pipe 210 to move linearly and reciprocally in a direction towards or away from the descaling roller table 110; the descaling height of the small-flow ultrahigh-pressure nozzle assembly 600 is set to be a low descaling height, and a plurality of small-flow ultrahigh-pressure nozzle assemblies 600 which are distributed in a high-density manner are arranged in the axial direction of the upper descaling pipe 210 and the lower descaling pipe 220; and a steam descaling header 400 for communicating with a steam source, which is spaced apart from the upper descaling tubes 210 in the extending direction of the descaling roller table 110, and is connected to the frame 100; wherein, the upper descaling pipe 210 and the lower descaling pipe 220 are respectively used for communicating with a water source through the water pipe 20.

Specifically, the direction of the descaling roller table 110 is the same as the Y axis, one side of the descaling roller table 110 facing the positive direction of the Y axis is an outlet of the finish rolling descaler, one side of the descaling roller table 110 facing the negative direction of the Y axis is an inlet of the finish rolling descaler, the descaling roller table 110 is a plane tangent to the upper end of the roller 111, namely, a position shown by a dotted line in fig. 2, and the steel blank moves along the Y axis in the descaling roller table 110 to complete the movement of the steel blank in the finish rolling descaler. The axial direction of the upper descaling pipe 210 is consistent with the width direction of the descaling roller table 110, and it can be understood that the axial direction of the upper descaling pipe 210 is consistent with the X-axis direction, the upper descaling pipe 210 is located above the descaling roller table 110 (on the positive side of the Z-axis), the lower descaling pipe 220 is located below the descaling roller table 110 (on the negative side of the Z-axis), the lower descaling pipe 220 is arranged in parallel with the upper descaling pipe 210, and the projections of the upper descaling pipe 210 and the lower descaling pipe 220 on the descaling roller table 110 are arranged at intervals, that is, the axial direction of the lower descaling pipe 220 is located on the negative direction of the Y-axis, and the axial direction of the upper descaling pipe 210 is located on the positive direction of the Y-axis, as shown in fig. 2. The lower descaling tubes 220 may be attached to the frame 100 by mounting brackets or mounts, etc. Taking the driving assembly 300 as two hydraulic cylinders as an example, the cylinders of the two hydraulic cylinders are mounted on the frame 100 through fasteners such as bolts, and the piston rods of the two hydraulic cylinders are in driving connection with the upper descaling roller 210 to drive the upper descaling roller 210 to move along the Z-axis above the descaling roller table 110, that is, the driving assembly 300 drives the upper descaling roller 210 to move up and down, wherein the upper descaling roller 210 and the lower descaling roller 220 are respectively used for communicating with a water source through the water pipe 20; the steam descaling header 400 is used for being communicated with a steam source and is positioned above the descaling roller table 110, the length direction of the steam descaling header 400 is parallel to the X-axis direction, and the steam descaling header 400 and the upper descaling pipe 210 are arranged at intervals in the extension direction of the descaling roller table 110, namely the steam descaling header 400 is positioned at the front side and the rear side of the upper descaling pipe 210, and the steam descaling header 400 can also be understood as being positioned at the inlet and the outlet of the finish rolling descaling machine. Meanwhile, a plurality of small-flow ultrahigh-pressure nozzle assemblies 600 which are distributed in a highly dense manner are arranged in the axial direction of the upper descaling pipe 210 and the lower descaling pipe 220, and the descaling heights of the small-flow ultrahigh-pressure nozzle assemblies 600 are all set to be low descaling heights, so that the distance between the adjacent small-flow ultrahigh-pressure nozzle assemblies 600 can be set to be 35mm, the flow can be set to be 20L/min, and the descaling height can be set to be 60mm during installation. Taking the current thickness of the steel billet as a first thickness as an example, the driving assembly 300 drives the upper descaling pipe 210 to move up and down to adjust the distance between the upper descaling pipe 210 and the descaling roller table 110 so as to meet the descaling process under the first thickness, when the steel billet passes through the inlet, the steam descaling header 400 positioned at the inlet blows air to the surface of the steel billet so as to remove water beads on the surface of the steel billet, and further the speed of reducing the temperature of the steel billet is delayed, the roller 111 continuously rotates, the steel billet moves to the position between the upper descaling pipe 210 and the lower descaling pipe 220 along the descaling roller table 110 under the rotation of the roller 111, the upper descaling pipe 210 and the lower descaling pipe 220 respectively spray descaling water from the upper surface and the lower surface of the steel billet, meanwhile, considering the water descaling process, the upper descaling pipe 210 and the lower descaling pipe 220 need to spray descaling water simultaneously, and in order to avoid the mutual interference of the descaling water sprayed by the upper descaling pipe 210 and the lower descaling pipe 220, the descaling water sprayed by the upper descaling pipe 210 and the lower descaling pipe 111 rotates to the outlet of the steel billet, and the finished descaling machine again sprays descaling water at the outlet of the roller 400. When the billet is of the second thickness, if the second thickness is larger than the first thickness, the driving assembly 300 drives the upper descaling pipe 210 to move upwards, and if the second thickness is smaller than the first thickness, the driving assembly 300 drives the upper descaling pipe 210 to move downwards, so that the water pressure of the descaling water sprayed by the upper descaling pipe 210 is not influenced by the thickness of the billet, and the descaling effect on the billet is ensured. If the axis of the lower descaling pipe 220 and the axis of the upper descaling pipe 210 are on the same plane in the Z-axis direction, when the billet is not descaled, the descaling water sprayed by the upper descaling pipe 210 can be directly sprayed towards the lower descaling pipe 220, so that the pressure intensities of the descaling water are mutually offset, and the descaling effect is reduced.

Therefore, in this embodiment, the descaling roller table 110 is disposed on the frame 100, so that the billet can move in the finish rolling descaling machine, when the billet passes through the upper descaling pipe 210 and the lower descaling pipe 220 under the driving of the descaling roller table 110, the billet can be communicated with the water source through the water pipe 20 via the upper descaling pipe 210 and the lower descaling pipe 220, the upper descaling pipe 210 is disposed above the descaling roller table 110, the lower descaling pipe 220 is disposed below the descaling roller table 110, so that the billet can be simultaneously descaled from the upper and lower ends thereof, so as to improve the descaling efficiency, and during descaling, a plurality of small-flow ultrahigh-pressure nozzle assemblies 600 are disposed in the axial direction of the upper descaling pipe 210 and the lower descaling pipe 220, the descaling heights of the small-flow ultrahigh-pressure nozzle assemblies 600 are set to be low so that the small-flow ultrahigh-pressure nozzle assemblies 600 form a setting mode of ultrahigh-pressure small-flow high-density low height, and therefore after the flow of the descaling water is reduced, the striking force of the small-flow descaling water on an oxide layer on the surface of the steel blank is improved by means of the characteristic that the small-flow ultrahigh-pressure nozzle assemblies 600 have ultrahigh-pressure high-density low height, the influence of the large flow of the descaling water on the temperature reduction of the steel blank is reduced, and particularly in a production line with extremely high control requirements on temperature difference of the steel blank, such as short-flow endless rolling, the better descaling effect can be ensured; after descaling, the water drops on the surface of the steel billet are removed before and after descaling through the steam descaling header 400 communicated with the air source, so that the speed of reducing the temperature of the steel billet is delayed, and the descaling effect is further improved; and then the driving assembly 300 is arranged on the rack 100 and is in driving connection with the upper descaling pipe 210 so as to drive the upper descaling pipe 210 to move back and forth linearly towards or away from the descaling roller table 110, thus, when the thickness of the steel blank changes, the lower descaling pipe 220 is kept still under the support of the rack 100, and the driving assembly 300 realizes the adjustment of the position of the upper descaling pipe 210 in the vertical direction, so that the impact position and the impact force of the descaling water sprayed by the upper descaling pipe 210 and the lower descaling pipe 220 on the steel blank can be kept consistent, the influence of the thickness of the steel blank on the water descaling effect is reduced, and the descaling effect of the finish rolling descaling machine is improved.

Alternatively, as shown in fig. 9 to 11, each of the upper and lower descaling tubes 210 and 220 includes a tube body 500, the nozzle assembly 600 includes a mounting plate 610, an adjusting block 620, a shielding plate 630 and a nozzle 640, the mounting plate 610 is connected to the tube body 500, the adjusting block 620, the shielding plate 630 and the nozzle 640 are disposed in a one-to-one correspondence manner and are all disposed on the mounting plate 610 along an axial direction of the tube body 500, the nozzle 640 penetrates through the adjusting block 620 and the mounting plate 610 and communicates with the tube body 500, the shielding plate 630 is disposed on the adjusting block 620 and is connected to the mounting plate 610, the shielding plate 630 is provided with a nozzle hole 631, and the nozzle hole 631 communicates with the nozzle 640.

It will be appreciated that one end of the tube body 500 is in sealed communication with the water tube 20 and the other end is sealed.

Specifically, a groove 510 is formed in the middle of the pipe body 500, the groove 510 is formed along the axial direction of the pipe body 500, the mounting plate 610 is embedded into the groove 510 and is hermetically connected with the pipe body 500, the lower end of the adjusting block 620 is attached to the upper end of the mounting plate 610 (a mounting groove may also be formed in the mounting plate 610, the lower end of the adjusting block 620 is attached to the groove bottom of the mounting groove), the lower end of the nozzle 640 sequentially penetrates through the adjusting block 620 and the mounting plate 610 and is communicated with the inside of the pipe body 500, a nozzle hole 631 is formed in the protection plate 630, the upper end of the nozzle 640 is embedded into the nozzle hole 631, two ends of the protection plate 630 are mounted on the mounting plate 610 through bolts to limit the movement of the nozzle 640 and the adjusting block 620, a plurality of adjusting blocks 620, a plurality of protection plates 630 and a plurality of nozzles 640 are arranged in a one-to-one correspondence, and a plurality of adjusting blocks are arranged along the length direction of the pipe body 500.

Thus, the length of the nozzle 640 in the pipe body 500 is limited by the adjusting block 620, so that the nozzle 640 is prevented from colliding with the pipe wall of the pipe body 500, and the use safety of the nozzle 640 is improved; the nozzle 640 penetrates through the adjusting block 620 and the mounting plate 610 and is communicated with the pipe body 500, so that the nozzle 640 is communicated with the pipe body 500; set up on adjusting block 620 and be connected with mounting panel 610 through guard plate 630, and be provided with nozzle hole 631 on the guard plate 630, nozzle hole 631 communicates with nozzle 640, when making guard plate 630 restrict the removal of nozzle 640, can reduce the influence of guard plate 630 to the injection of descaling water, in order to avoid nozzle 640 to drop from pipe body 500, improve the stability of descaling of nozzle 640, rethread adjusting block 620, guard plate 630 and nozzle 640 one-to-one are provided with a plurality ofly, and all set up on mounting panel 610 along the axis direction of pipe body 500, therefore, realize the maximize of nozzle 640 quantity, thereby improve and spout the density of group 640 on pipe body 500 axis, thereby improve descaling efficiency.

Alternatively, as shown in fig. 5 and 7, the steam descaling header 400 includes a steam pipe 420 and a plurality of multi-channel flat air nozzles 410, the plurality of multi-channel flat air nozzles 410 being in communication with the steam pipe 420 and being symmetrically disposed along the length of the steam pipe 420, the steam pipe 420 being disposed on the rack 100 and being in communication with the air supply.

Specifically, two ends of the steam pipe 420 are communicated with an air source in a workshop through connecting pipes such as a pipeline and the like and can be connected with the rack 100 through bolts, the multi-channel flat air nozzles 410 are symmetrically arranged at the lower end of the steam pipe 420, and during descaling, steam entering the steam pipe 420 is blown to the upper surface of the billet through the multi-channel flat air nozzles 410 so as to remove water drops remaining on the surface of the billet.

So, set up on frame 100 through steam pipe 420 and be used for communicating with the air supply, and a plurality of multichannel flat air nozzle 410 and steam pipe 420 intercommunication, and set up along the length direction symmetry of steam pipe 420, make the steam that gets into in the steam pipe 420 form the broad range of sweeping through a plurality of multichannel flat air nozzle 410, like this, during the descaling, remaining drop on the billet surface can be got rid of fast to the steam that a plurality of multichannel flat air nozzle 410 blew out, improve the descaling effect, and multichannel flat air nozzle 410 has noise abatement nature and heat resistance.

Optionally, as shown in fig. 3 and 6, a descaling box 200 is further disposed on the rack 100, the descaling box 200 includes an upper descaling box 230 and a lower descaling box 240 which are communicated with each other, two ends of an upper descaling pipe 210 extend from the upper descaling box 230 and are connected to the driving assembly 300, the lower descaling pipe 220 is disposed in the lower descaling box 240, the upper descaling box 230 and the lower descaling box 240 are detachably connected, and the lower descaling box 240 is connected to the rack 100.

Specifically, the side wall of the upper descaling box 230 located in the negative Y-axis direction is a rear side wall, the side wall located in the positive Y-axis direction is a front side wall, the rear side wall and the front side wall are respectively provided with a long hole 232, the length direction of the long hole 232 is consistent with the moving direction of the upper descaling pipe 210 (the moving stability of the upper descaling pipe 210 is improved), two ends of the upper descaling pipe 210 extend out of the long holes 232 respectively and are connected with the driving assembly 300 through structures such as bolt fasteners, and the driving assembly 300 drives the upper descaling pipe 210 to move up and down in the long holes 232. The water pipe 20 penetrates the top of the upper descaling box 230 from above the upper descaling box 230 to communicate with the upper descaling pipe 210, the lower descaling pipe 220 is arranged in the lower descaling box 240 and communicates with an external water pipe, the upper descaling box 230 is pin-jointed or bolted to the lower descaling box 240, and the lower descaling box 240 is fixed on the frame 100 through bolts.

Further, in order to prevent the descaling water from splashing from the elongated hole 232 and affecting the use of the finish rolling descaler, a sealing plate 233 may be provided on the upper descaling pipe 210, and the elongated hole 232 may be covered by the sealing plate 233.

Further, still can be provided with deflector 520 and with the groove structure of deflector 520 looks adaptation in the last descaling box 230, deflector 520 cover is established on last descaling pipe 210, in last descaling pipe 210 reciprocates the in-process, and deflector 520 can slide in the groove structure to the removal of going up descaling pipe 210 is led, in order to heighten the stability of removal of going up descaling pipe 210, and then improves the descaling effect of going up descaling pipe 210.

Therefore, the lower descaling box 240 is connected with the rack 100, so that the lower descaling box 240 can support the upper descaling box 230, and then is arranged in the upper descaling box 230 through the upper descaling pipe 210, the lower descaling pipe 220 is arranged in the lower descaling box 240, and the upper descaling box 230 and the lower descaling box 240 are detachably connected, so that the upper descaling box 230 and the lower descaling box 240 can be independently hoisted, and the replacement of the upper descaling pipe 210 and the lower descaling pipe 220 is facilitated.

Optionally, as shown in fig. 2 and 3, the finish rolling descaler further includes a water collection cover 700 communicated with the descaling boxes 200, the water collection cover 700 is covered above the descaling roller table 110 and connected to the frame 100, and the water collection cover 700 is used for collecting the descaling water sprayed from the upper and lower descaling tubes 210 and 220.

Specifically, one end of the water collection cover 700 facing the X-axis is communicated with the descaling tank 200, and the water collection cover 700 is positioned above the rollers 111 and is coupled to the frame 100 by bolts.

In this way, the water collection cover 700 is connected with the frame 100, so that the water collection cover 700 is kept stable above the descaling roller table 110; and the water collecting cover 700 is communicated with the descaling box 200 and is covered above the descaling roller table 110 to collect the descaling water sprayed by the upper descaling pipe 210 and the lower descaling pipe 220, so that the water collecting cover 700 prevents the sprayed descaling water from falling onto the billet during descaling, the temperature reduction speed of the billet is reduced, and the descaling effect of the descaling box 200 is improved.

Optionally, as shown in fig. 2 and fig. 3, a water collecting tank 720, a first flow guide wall 730 and a second flow guide wall 740 are arranged in the water collecting cover 700, the water collecting tank 720 is located above the descaling roller 110 and is bent downward, the first flow guide wall 730 is located above the water collecting tank 720, the second flow guide wall 740 is located between the first flow guide wall 730 and the water collecting tank 720, and both the first flow guide wall 730 and the second flow guide wall 740 are bent upward.

Specifically, the water collection cover 700 may also be understood as a cover body 710. The projections of the water collection tank 720, the first guide wall 730 and the second guide wall 740 on the XZ plane are in a "U" shape or a shape similar to the "U". One end (positive end of Y axis) of the first guide wall 730 and one end (negative end of Y axis) of the second guide wall 740 are respectively welded on the side wall of the cover body 710 facing the positive direction of Y axis, one end of the water collection tank 720 located at the negative direction of X axis is welded on one end of the cover body 710 facing the negative direction of X axis, the first guide wall 730 is located above the water collection tank 720, the second guide wall 740 is located between the first guide wall 730 and the water collection tank 720, the first guide wall 730 and the second guide wall 740 are both bent towards the water collection tank 720, and the water collection tank 720 is bent away from the descaling roller table 110. During descaling, the descaling water sprayed by the lower descaling pipe 220 is guided by the first guide wall 730 and then falls into the water collecting tank 720 and is collected by the water collecting tank 720, the descaling water sprayed by the upper descaling pipe 210 is guided by the second guide wall 740 and then falls into the water collecting tank 720 and is also collected by the water collecting tank 720, and the descaling water in the water collecting tank 720 flows out from the two ends of the water collecting tank 720 because the length direction of the water collecting tank 720 is consistent with the width direction of the descaling roller table 110, so that the descaling water falling onto the steel blank is reduced.

Further, the middle of the water collection tank 720 is higher than both ends so that the descaling water in the water collection tank 720 rapidly falls from both sides of the billet.

In this way, the water collecting groove 720, the first guide wall 730 and the second guide wall 740 are arranged in the water cover 700, so that the water collecting groove 720, the first guide wall 730 and the second guide wall 740 are kept stable in the water cover 700; the first guide wall 730 is located above the water collecting tank 720, the second guide wall 740 is located between the first guide wall 730 and the water collecting tank 720, the first guide wall 730 and the second guide wall 740 are both bent towards the water collecting tank 720, and the water collecting tank 720 is bent away from the descaling roller table 110, so that the descaling water sprayed by the lower descaling pipe 220 falls into the water collecting tank 720 after being guided by the first guide wall 730 and is collected by the water collecting tank 720, so that the influence of the sprayed descaling water falling onto the steel blank when the lower descaling pipe 220 waits for descaling is reduced, the descaling water sprayed by the upper descaling pipe 210 falls into the water collecting tank 720 after being guided by the second guide wall 740 and is also collected by the water collecting tank 720, and therefore the descaling water sprayed by the upper descaling pipe 210 falls onto the steel blank after being rebounded by the steel blank and has a reduced temperature effect on the steel blank is avoided, and the length direction of the water collecting tank 720 is consistent with the width direction of the descaling roller table 110, so that the descaling water in the water collecting tank 720 flows out from two ends of the water collecting tank 720, and the descaling roller table can reduce the temperature and further improve the descaling effect on the descaling effect of the steel blank.

Optionally, as shown in fig. 2 and 4, the water collecting cover 700 further includes a cylinder 750, a rotating shaft 760, a first water baffle 770 and a connecting rod 780, the rotating shaft 760 is located between the water collecting tank 720 and the descaling roller table 110 and is hinged to the water collecting cover 700, one end of the first water baffle 770 is connected to the rotating shaft 760, the other end of the first water baffle 770 extends away from the rotating shaft 760, the cylinder 750 is hinged to the water collecting cover 700 and is drivingly connected to the connecting rod 780, and the connecting rod 780 is drivingly connected to the rotating shaft 760.

Specifically, the cylinder body of the cylinder 750 is hinged to the cover body 710 and rotates around the axis of the hinged position, the piston rod of the cylinder 750 is in driving connection with the connecting rod 780, two ends of the rotating shaft 760 extend out of the cover body 710 and are in rotating connection with the cover body 710, the connecting rod 780 comprises a connecting rod body and a connecting piece 781, the connecting piece 781 is of two plate-shaped structures which are parallel to each other and connected through a pin shaft, a sliding groove is formed in the connecting rod body, the pin shaft of the connecting piece 781 slides in the sliding groove, a sleeve 782 is welded at one end, far away from the pin shaft, of the connecting piece 781 and is in key connection with the rotating shaft 760, the rotating shaft 760 is connected with one end, facing the negative direction of the Y axis, of the first water baffle 770 through a fastener such as a bolt, the other end, facing the positive direction of the Y axis, extends away from the rotating shaft 760, when the scale removing pipe 210 moves upwards, the piston rod of the cylinder 750 extends out towards the negative direction of the Z axis, the cylinder body of the cylinder 750 rotates anticlockwise, the pin shaft on the connecting piece 781 slides downwards in the sliding groove to apply circumferential force to the sleeve 782 to drive the sleeve 782 to rotate, and further drive the rotating shaft 760 to rotate around the axis of the pin shaft, the first water baffle 770 rotates upwards under the drive of the rotating shaft 760, and stops when the rotating shaft rotates to the dotted line A, at this time, the upper descaling pipe 210 and the first water baffle 770 are positioned at the same height, so that when the upper descaling pipe 210 descales, the descaling water sprayed from the upper descaling pipe 210 splashes to the first water baffle 770 after hitting a steel billet, the first water baffle 770 guides the splashed descaling water to the second flow guide wall 740, the water collection groove 720 collects the descaling water, when the upper descaling pipe 210 moves downwards, the piston rod of the air cylinder 750 retracts, the rotating shaft 760 rotates clockwise around the axis of the rotating shaft under the gravity of the first water baffle 770, the sleeve 782 and the connecting piece 781 rotate clockwise, the pin shaft on the connecting piece 781 drives the air cylinder 750 to rotate clockwise through the sliding groove, so that the first water guard 770 can guide the descaling water sprayed from the upper descaling pipe 210 from a lower position.

Therefore, the rotating shaft 760 is positioned between the water collecting groove 720 and the descaling roller table 110 and is hinged with the water collecting cover 700, the rotating shaft 760 is supported from the cover body 710 and can rotate around the axis of the rotating shaft 760, the rotating shaft is hinged on the water collecting cover 700 through the air cylinder 750 and is in driving connection with the connecting rod 780, the connecting rod 780 is in driving connection with the rotating shaft 760, one end of the first water baffle 770 is connected with the rotating shaft 760, and the other end of the first water baffle is arranged in a manner of extending away from the rotating shaft 760, so that when the upper position and the lower position of the upper descaling pipe 210 change, the first water baffle 770 can guide the descaling water reflected by the steel blanks to the second flow guide wall 740, the falling of the descaling water onto the steel blanks can be reduced to a certain extent, the influence of the descaling water on the reduction of the temperature of the steel blanks can be reduced, the speed of the reduction of the temperature of the steel blanks can be delayed, and the descaling effect of the upper descaling pipe 210 can be improved.

Alternatively, as shown in fig. 3, the descaling box 200 includes an upper descaling box 230 and a lower descaling box 240, the upper descaling pipe 210 is disposed in the upper descaling box 230, the lower descaling pipe 220 is disposed in the lower descaling box 240, the upper descaling box 230 and the lower descaling box 240 are detachably connected, and the lower descaling box 240 is connected to the frame 100.

Specifically, the upper descaling pipe 210 is located in the upper descaling box 230, two ends of the upper descaling pipe 210 extend out of the upper descaling box 230, two ends of the upper descaling pipe 210 are respectively connected with one driving assembly 300, the telescopic water pipe 20 penetrates through the top of the upper descaling box 230 from above the upper descaling box 230 to be communicated with the upper descaling pipe 210, the lower descaling pipe 220 is arranged in the lower descaling box 240 and is communicated with an external water pipe, the upper descaling box 230 is in pin connection or bolt connection with the lower descaling box 240, and the lower descaling box 240 is fixed on the rack 100 through bolts.

Therefore, the lower descaling box 240 is connected with the rack 100, so that the lower descaling box 240 can support the upper descaling box 230, and then is arranged in the upper descaling box 230 through the upper descaling pipe 210, the lower descaling pipe 220 is arranged in the lower descaling box 240, and the upper descaling box 230 and the lower descaling box 240 are detachably connected, so that the upper descaling box 230 and the lower descaling box 240 can be independently hoisted, and the replacement of the upper descaling pipe 210 and the lower descaling pipe 220 is facilitated.

Optionally, as shown in fig. 1 and 8, the finish rolling descaler further includes a second water blocking plate 231, one end of the second water blocking plate 231 is clamped to the upper descaling pipe 210, the other end of the second water blocking plate 231 extends upward, and a through hole 2311 is formed in the second water blocking plate 231 at a position corresponding to the nozzle assembly 600.

Specifically, the projection of the second water baffle 231 on the XZ plane is "L" shaped or similar to "L", the lower end of the second water baffle 231 is connected to the upper descaling roller 210 in a snap-fit manner, and the upper end of the second water baffle 231 extends upward, that is, the end of the second water baffle 231 facing the water collection cover 700 extends in the direction away from the descaling roller table 110, that is, in the forward direction of the Z axis, and a through hole 2311 is formed in the second water baffle 231 at a position corresponding to the nozzle assembly 600, so that the nozzle assembly 600 on the upper descaling roller 210 can spray descaling water from the through hole 2311 during descaling, and the descaling water is reflected upward by the billet after striking the billet, although the descaling water reflected by the first water baffle 770 is blocked, the descaling water still cannot be guided by the partially reflected descaling water through the first water baffle 770 in consideration of the high pressure of the descaling water.

Thus, one end of the second water baffle 231 is connected with the upper descaling pipe 210 in a clamped mode, the other end of the second water baffle 231 extends upwards, and the through hole 2311 is formed in the position, corresponding to the nozzle assembly 600, of the second water baffle 231, so that when the upper descaling pipe 210 is used for descaling, the second water baffle 231 guides the descaling water to the first water baffle 770, the descaling water is prevented from splashing around the upper descaling box 230, and the influence of the descaling water on the descaling effect is reduced.

Optionally, as shown in fig. 1, fig. 2 and fig. 3, the finish rolling descaling machine further includes a pinch roll assembly 800, the pinch roll assembly 800 is located on a side of the steam descaling header 400 facing away from the upper descaling pipe 210, the pinch roll assembly 800 includes a hydraulic cylinder 810, an upper pinch roll 820 and a lower pinch roll 830, the hydraulic cylinder 810 is connected to the rack 100, the descaling roller table 110 is located between the upper pinch roll 820 and the lower pinch roll 830, the upper pinch roll 820 is located above the lower pinch roll 830, the upper pinch roll 820 and the lower pinch roll 830 are respectively connected to the rack 100 through a driving unit 10, and the hydraulic cylinder 810 is in driving connection with the upper pinch roll 820 to drive the upper pinch roll 820 to move in a direction perpendicular to the descaling roller table 110.

Specifically, the pinch roll assembly 800 is located on one side of the steam descaling header 400 departing from the descaling box 200, that is, the pinch roll assembly 800 is located on one side of the negative direction of the Y axis, the descaling roller table 110 is located below the upper pinch roll 820, the lower pinch roll 830 is located below the descaling roller table 110, wherein the top end of the lower pinch roll 830 is tangent to the plane where the descaling roller table 110 is located (that is, the dotted line is tangent to the top end of the lower pinch roll 830 in fig. 2), the upper pinch roll 820 and the lower pinch roll 830 are arranged in parallel, the axes of the upper pinch roll 820 and the lower pinch roll 830 are both consistent with the width direction of the descaling roller table 110, the upper pinch roll 820 and the lower pinch roll 830 are respectively connected with the frame 100 through the driving member 10, and for the lower pinch roll 830, the driving member 10 which is connected with the lower pinch roll 830 in a driving manner is detachably connected with the frame 100 through a fastener such as a bolt; as shown in fig. 1, two ends of the lower nip roller 830 respectively extend out from two ends of the frame 100, two ends of the lower nip roller 830 are respectively rotatably connected with the frame 100 through a bearing seat, and a driving assembly is drivingly connected with one end of the lower nip roller 830 to drive the lower nip roller 830 to rotate around its own axis; for the upper clamping roller 820, the driving piece 10 in driving connection with the upper clamping roller 820 is detachably connected with the machine frame 100 through a fastening piece such as a bolt; two ends of the upper clamping roller 820 respectively extend out of two ends of the rack 100, two ends of the upper clamping roller 820 are respectively connected with the rack 100 in a sliding mode through bearing seats, a cylinder barrel of the hydraulic cylinder 810 is connected with the upper end of the rack 100 through fasteners such as bolts and the like, two piston rods of the two hydraulic cylinders 810 are respectively in driving connection with the bearing seats at two ends of the upper clamping roller 820, and therefore the upper clamping roller 820 is driven to move in the direction perpendicular to the descaling roller table 110. Thus, when the thickness of the steel billet changes, the lower clamping roller 830 can always support the lower end of the steel billet, and the upper clamping roller 820 can be driven by the hydraulic cylinder 810 to realize the position adjustment above the descaling roller table 110, so that the steel billets with different thicknesses can be clamped and conveyed into the finish rolling descaling machine.

Further, as shown in fig. 1, in order to reduce the influence of equipment failure on the descaling process, two sets of the descaling box 200, the water collecting cover 700, the steam descaling header 400 and the pinch roll assembly 800 are respectively arranged, wherein the descaling box 200, the water collecting cover 700, the steam descaling header 400 and the pinch roll assembly 800 in one set are all located on one side of the rack 100 facing the negative direction of the Y axis, and the descaling box 200, the water collecting cover 700, the steam descaling header 400 and the pinch roll assembly 800 are sequentially arranged along the negative direction of the Y axis; the descaling box 200, the water collecting cover 700, the steam descaling header 400 and the pinch roll assembly 800 in the other set are all positioned on one side of the machine frame 100 facing the positive direction of the Y axis, and the descaling box 200, the water collecting cover 700, the steam descaling header 400 and the pinch roll assembly 800 are sequentially arranged along the positive direction of the Y axis.

The driving assembly may be a conventional driving structure, such as a motor and a coupling.

Optionally, as shown in connection with FIG. 5, the finish rolling descaler further includes a viewing window 900, the viewing window 900 being disposed on the upper descaling box 230.

Specifically, the observation window 900 is a through hole or other structure, and is installed at the top end of the upper descaling box 230, so that during descaling, an operator can observe the internal condition of the finish rolling descaler through the observation window 900, for example, observe the descaling of the steel blank by the upper descaling pipe, or observe the deviation of the movement of the steel blank on the descaling roller 110 from the length direction of the descaling roller 110.

So, set up on last descaling box 230 through observation window 900, realize going up the intercommunication of descaling box 230 and finish rolling descaling machine external environment to at the descaling in-process, operating personnel accessible observation window 900 confirms the descaling condition, so that adjust the position of last descaling pipe 210 according to the descaling condition, simultaneously, when the descaling trouble appears in the finish rolling descaling machine, accessible observation window 900 confirms fault location fast, in order to improve troubleshooting efficiency.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims (10)

1. A pinch roll type ultrahigh pressure small flow descaler, comprising:

a frame (100) on which a descaling roller way (110) is arranged;

the descaling pipe group comprises an upper descaling pipe (210) and a lower descaling pipe (220), the upper descaling pipe (210) is positioned above the descaling roller way (110), and the lower descaling pipe (220) is positioned below the descaling roller way (110) and arranged on the rack (100);

the driving assembly (300) is arranged on the rack (100) and is in driving connection with the upper descaling pipe (210) so as to drive the upper descaling pipe (210) to move in a reciprocating linear mode towards or away from the descaling roller way (110);

the descaling height of the small-flow ultrahigh-pressure nozzle assembly (600) is set to be a low descaling height, and a plurality of small-flow ultrahigh-pressure nozzle assemblies (600) which are distributed in a high-density mode are arranged on the upper descaling pipe (210) and the lower descaling pipe (220) in the axial direction;

and a steam descaling header (400) used for being communicated with a steam source, arranged at intervals with the upper descaling pipe (210) in the extending direction of the descaling roller way (110) and connected with the frame (100); the upper descaling pipe (210) and the lower descaling pipe (220) are respectively communicated with a water source through a water pipe (20).

2. The pinch roll type ultra-high pressure small flow descaler of claim 1, wherein the upper descaling tube (210) and the lower descaling tube (220) each comprise a tube body (500), the small flow ultra-high pressure nozzle assembly (600) comprises a mounting plate (610), an adjustment block (620), a guard plate (630) and nozzles (640), the mounting plate (610) is connected with the tube body (500), the adjustment block (620), the guard plate (630) and the nozzles (640) are provided in a plurality in one-to-one correspondence, and are all provided on the mounting plate (610) along an axial direction of the tube body (500), the nozzles (640) penetrate through the adjustment block (620) and the mounting plate (610) and communicate with the tube body (500), the guard plate (630) is provided on the adjustment block (620) and is connected with the mounting plate (610), and nozzle holes (631) are provided on the guard plate (630), and the nozzle holes (631) communicate with the nozzles (640).

3. The pinch roll type ultra-high pressure small flow descaler according to claim 1, wherein said steam descaling header (400) comprises a multi-channel flat air nozzle (410) and a steam pipe (420), said multi-channel flat air nozzle (410) is communicated with said steam pipe (420) and symmetrically arranged along the length direction of said steam pipe (420), and said steam pipe (420) is arranged on said frame (100) and is used for being communicated with a gas source.

4. The pinch-roller type ultrahigh-pressure small-flow descaler according to claim 1, wherein a descaling box (200) is further arranged on the frame (100), the descaling box (200) comprises an upper descaling box (230) and a lower descaling box (240) which are communicated with each other, two ends of the upper descaling pipe (210) extend out of the upper descaling box (230) and are connected with the driving assembly (300), the lower descaling pipe (220) is arranged in the lower descaling box (240), the upper descaling box (230) and the lower descaling box (240) are detachably connected, and the lower descaling box (240) is connected with the frame (100).

5. The pinch-roller type ultrahigh-pressure small-flow descaler according to claim 4, further comprising a water collection cover (700) communicated with the descaling box (200), wherein the water collection cover (700) is arranged above the descaling roller table (110) and connected with the frame (100), and the water collection cover (700) is used for collecting descaling water sprayed by the upper descaling pipe (210) and the lower descaling pipe (220).

6. The pinch-roller type ultrahigh-pressure small-flow descaler according to claim 5, wherein a water collection tank (720), a first flow guide wall (730) and a second flow guide wall (740) are arranged in the water collection cover (700), the water collection tank (720) is located above the descaling roller table (110) and is arranged in a downward bending mode, the first flow guide wall (730) is located above the water collection tank (720), the second flow guide wall (740) is located between the first flow guide wall (730) and the water collection tank (720), and the first flow guide wall (730) and the second flow guide wall (740) are arranged in an upward bending mode.

7. The pinch-roller type ultrahigh-pressure small-flow descaler according to claim 6, wherein the water collection cover (700) further comprises a cylinder (750), a rotating shaft (760), a first water baffle (770) and a connecting rod (780), the rotating shaft (760) is located between the water collection tank (720) and the descaling roller table (110) and is hinged to the water collection cover (700), one end of the first water baffle (770) is connected to the rotating shaft (760), the other end of the first water baffle extends away from the rotating shaft (760), the cylinder (750) is hinged to the water collection cover (700) and is in driving connection with the connecting rod (780), and the connecting rod (780) is in driving connection with the rotating shaft (760).

8. The pinch roll type ultrahigh-pressure small-flow descaler according to claim 1, further comprising a second water baffle (231), wherein one end of the second water baffle (231) is clamped with the upper descaling pipe (210), the other end of the second water baffle extends upwards, and a through hole (2311) is formed in the position, corresponding to the nozzle assembly (600), of the second water baffle (231).

9. The pinch-roller type ultrahigh-pressure small-flow descaling machine according to claim 1, further comprising a pinch roller assembly (800), wherein the pinch roller assembly (800) is positioned on one side of the steam descaling header (400) facing away from the upper descaling pipe (210), the pinch roller assembly (800) comprises a hydraulic cylinder (810), an upper pinch roller (820) and a lower pinch roller (830), the hydraulic cylinder (810) is connected with the frame (100), the descaling roller table (110) is positioned between the upper pinch roller (820) and the lower pinch roller (830), the upper pinch roller (820) is positioned above the lower pinch roller (830), the upper pinch roller (820) and the lower pinch roller (830) are respectively connected with the frame (100) through a driving assembly (10), and the hydraulic cylinder (810) is in driving connection with the upper pinch roller (820) to drive the upper pinch roller (820) to move in a direction perpendicular to the descaling roller table (110).

10. The pinch-roller ultra-high pressure small flow descaler of claim 4, further comprising an observation window (900), wherein said observation window (900) is disposed on said upper descaling box (230).

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