Injection device for pipe ice-slurry cleaning system

Abstract

Disclosed in the present invention is an injection device for a pipe ice-slurry cleaning system. The injection device is mounted on a remotely-controllable movable cleaning body that can move within a pipe, the injection device comprising a nozzle outlet core (1), an outer sleeve (2), a regulating core (3), a connecting inner cylinder (4), a connecting tube (5), a first swirling pressure regulating body (6) and a second swirling pressure regulating body (7), wherein the nozzle outlet core is mounted at the left end of the outer sleeve, the right end of the outer sleeve being mounted on the connecting tube. The injection device is characterized in that the regulating core and the connecting inner cylinder are mounted in the outer sleeve and located between the nozzle outlet core and the connecting tube; the first swirling pressure regulating body and the second swirling pressure regulating body are connected to an inner peripheral wall of the connecting inner cylinder; and the axial position of the regulating core is adjustable. The regulating core, the first swirling pressure regulating body and the second swirling pressure regulating body are used for regulating the particle size uniformity, mixing uniformity and swirling performance of an ice slurry / ice particle liquid mixture, thus improving the injection force of the injection device, and thereby improving the cleaning effect of the ice slurry liquid mixture on a pipe inner wall.

Description

A spray device for pipeline ice slurry cleaning system Technical Field

[0001] The present invention relates to the technical field of pipeline cleaning and ice slurry / ice particle cleaning, and in particular to a spraying device for a pipeline ice slurry cleaning system. Background Art

[0002] Compared to traditional pipe cleaning techniques, ice slurry / ice pellet cleaning technology is an emerging, highly effective cleaning technology. Pipeline ice slurry cleaning systems typically include an ice maker, conveyor, sprayer, and pump. However, existing sprayers used in pipe ice slurry cleaning systems still suffer from issues such as poor particle size uniformity and mixing uniformity of the ice slurry / ice pellet mixture, as well as poor spray force and cleaning effectiveness. Technical Solutions

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a spray device for a pipeline ice slurry cleaning system. The spray device can improve the collision and / or mixing effect of the ice slurry / ice particle mixture through the design of an adjusting core with adjustable axial position, an arc-shaped protrusion and / or a first swirl pressure regulating body and a second swirl pressure regulating body, thereby adjusting the particle size uniformity, mixing uniformity, and swirl performance of the ice slurry / ice particle mixture, improving the spray force of the spray device, and thus improving the cleaning effect of the ice slurry mixture on the inner wall of the pipeline.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A spray device for a pipeline ice slurry cleaning system, the spray device is installed on a movable cleaning body that can move in the pipeline and can be remotely controlled, and comprises a nozzle outlet core (1), an outer sleeve (2), an adjusting core (3), a connecting inner sleeve (4), a connecting pipe (5), a first swirl pressure regulating body (6), and a second swirl pressure regulating body (7). The left end of the outer sleeve is installed with the nozzle outlet core, and the right end of the outer sleeve is installed on the connecting pipe. The invention is characterized in that: the adjusting core and the connecting inner sleeve are installed in the outer sleeve and between the nozzle outlet core and the connecting pipe, the inner peripheral wall of the connecting inner sleeve is connected to the first swirl pressure regulating body and the second swirl pressure regulating body, the axial position of the adjusting core is adjustable, the adjusting core is used to adjust the particle size uniformity and mixing uniformity of the ice slurry / ice particle mixture, and the first swirl pressure regulating body and the second swirl pressure regulating body are used to adjust the particle size uniformity, mixing uniformity and swirl performance of the ice slurry / ice particle mixture.

[0006] Furthermore, the adjusting core (3) comprises an outer cylinder (31), an inner cylinder (32), a first through hole (33), a guide wing (34), a positioning hole (36), a screw (37), a waist-shaped groove (38), a pad (381), and a locking nut (39). The outer cylinder and the inner cylinder are connected by a plurality of guide wings distributed along the circumference. A first through hole is provided at the center of the inner cylinder, a positioning hole is provided on the outer circumference of the outer cylinder, a waist-shaped groove is provided on the outer sleeve, the screw passes through the waist-shaped groove and is inserted into the positioning hole, an elastic pad is installed between the screw and the inner wall of the waist-shaped groove, a locking nut is installed on the screw and on the outer circumference of the outer sleeve, and the locking nut is used to lock the adjusting core after the axial position is positioned.

[0007] Furthermore, the regulating core (3) further comprises an arcuate protrusion (35), which is arranged on the outer peripheral surface of the inner cylinder portion, and comprises a plurality of arcuate protrusions arranged along the axial direction, and the arcuate protrusion is an annular protrusion.

[0008] Furthermore, the arc-shaped raised portion (35) has a raised height H, and the raised height H gradually increases from the side of the connecting inner cylinder (4) to the side of the nozzle outlet core (1), and the outer diameter of the inner cylinder portion (32) also gradually increases.

[0009] Furthermore, the first swirl pressure regulating body (6) comprises a first body (61), a first semicircular portion (62), a pressure regulating chamber outlet hole (63), a first swirl plate (64), a first swirl groove (65), and a first swirl plate (66). The pressure regulating chamber outlet hole is provided at the left end of the inner circumference of the first body, and the first semicircular portion is provided on the right side. A first semicircular pressure regulating chamber is formed in the first semicircular portion. The inner circumferential wall of the first semicircular portion is provided with a first swirl plate. The length direction of the first swirl plate is the axial direction of the injection device, and the plurality of first swirl plates are distributed along the circumferential direction. The outer circumferential surface of the first body is provided with a first swirl groove and a first swirl plate. The plurality of first swirl grooves and the plurality of first swirl plates are alternately arranged along the circumferential direction.

[0010] Furthermore, the second swirl pressure regulating body (7) includes a second body (71), a second semicircular portion (72), a pressure regulating chamber inlet hole (73), a second swirl plate (74), a second swirl groove (75), and a second swirl plate (76). The second semicircular portion is provided at the left end of the inner circumference of the second body, and the pressure regulating chamber inlet hole is provided on the right side. A second semicircular pressure regulating chamber is formed in the second semicircular portion. The inner circumferential wall of the second semicircular portion is provided with a second swirl plate. The length direction of the second swirl plate is the axial direction of the injection device, and the plurality of second swirl plates are distributed along the circumferential direction. The outer circumferential surface of the second body is provided with a second swirl groove and a second swirl plate. The plurality of second swirl grooves and the plurality of second swirl plates are alternately arranged along the circumferential direction.

[0011] Furthermore, the first semicircular pressure regulating chamber and the second semicircular pressure regulating chamber together constitute a circular / spherical pressure regulating chamber, the circular / spherical pressure regulating chamber is respectively connected to the pressure regulating chamber outlet hole and the pressure regulating chamber inlet hole, the pressure regulating chamber outlet hole is respectively adjacent to and connected to the first through hole and the flow channel between the outer cylinder and the inner cylinder, and the plurality of first rectifiers and the plurality of second rectifiers are arranged in a one-to-one correspondence; the radial depth and thickness of the first rectifier (64) are both less than half the diameter of the pressure regulating chamber inlet hole, and the radial depth and thickness of the second rectifier (74) are both less than half the diameter of the pressure regulating chamber inlet hole.

[0012] Furthermore, in the circumferential direction, the upstream end of each first swirl plate (66) is arranged at a middle position corresponding to the downstream end of the second swirl groove (75), the angle between the second swirl plate (76) and the longitudinal line is b1, the angle between the first swirl plate and the longitudinal line is b2, the longitudinal line is perpendicular to the axis of the injection device, and b2>b1, b2=1.03-1.5 times b1.

[0013] Furthermore, the outer periphery of the connecting inner tube (4) has a first threaded section (41), and the connecting inner tube is threadedly connected to the first inner peripheral surface of the outer sleeve (2) through the first threaded section; the outer periphery of the connecting pipe (5) has a second threaded section (51), and the connecting pipe is threadedly connected to the second inner peripheral surface of the outer sleeve through the second threaded section, an inclined transition surface is provided between the first inner peripheral surface and the second inner peripheral surface, and an inclined portion (52) is provided at the left end portion of the connecting pipe, and the inclined portion matches the inclined transition surface.

[0014] Furthermore, the nozzle outlet core (1) includes an outlet hole (11), a contraction hole (12), and a step portion (13). The outlet hole is opened at the center of the nozzle outlet core, and a contraction hole is provided at the upstream end of the outlet hole. The contraction hole is adjacent to and connected with the first through hole (33) and the flow channel between the outer cylinder portion and the inner cylinder portion. The outer diameter of the contraction hole is greater than or equal to the outer diameter of the flow channel. The nozzle outlet core is positioned by matching the step portion provided on its outer circumferential surface with the corresponding step portion on the inner circumferential surface of the outer cylinder. Beneficial effects

[0015] The present invention provides a spray device for a pipeline ice slurry cleaning system. By designing an adjustment core with adjustable axial position and an arc-shaped protrusion, the device can improve the collision and / or mixing effect of the ice slurry / ice particle mixture, thereby adjusting / improving the particle size uniformity and mixing uniformity of the ice slurry / ice particle mixture, increasing the spraying force of the spray device, and improving the cleaning effect of the ice slurry mixture on the inner wall of the pipeline.

[0016] The present invention provides a spray device for a pipeline ice slurry cleaning system. Through the design of a first swirl pressure regulating body and a second swirl pressure regulating body, it is possible to adjust / improve the particle size uniformity, mixing uniformity, and swirl performance of the ice slurry / ice particle mixture, thereby improving the spraying force of the spray device and thus improving the cleaning effect of the ice slurry mixture on the inner wall of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic structural diagram of a spray device for a pipeline ice slurry cleaning system according to the present invention;

[0018] FIG2 is a schematic structural diagram of a spray device for a pipeline ice slurry cleaning system according to the present invention;

[0019] FIG3 is a schematic structural diagram of a spray device for a pipeline ice slurry cleaning system according to the present invention;

[0020] FIG4 is a schematic diagram of the structure of the swirl trough of the present invention.

[0021] In the figure: nozzle outlet core 1, outer sleeve 2, adjusting core 3, connecting inner sleeve 4, connecting pipe 5, first swirl pressure regulating body 6, second swirl pressure regulating body 7, outlet hole 11, contraction hole 12, step portion 13, outer cylinder portion 31, inner cylinder portion 32, first through hole 33, guide vane / rib 34, arc-shaped protrusion 35, positioning hole 36, screw / screw 37, waist-shaped groove / hole 38, spacer 381, locking nut 39, first threaded segment 41, second threaded segment 51, inclined portion 52, first body 61, first semicircular portion 62, pressure regulating chamber outlet hole 63, first straightening plate 64, first swirl groove 65, first swirl plate 66, second body 71, second semicircular portion 72, pressure regulating chamber inlet hole 73, second straightening plate 74, second swirl groove 75, second swirl plate 76, "←↓" fluid flow direction. Best Mode for Carrying Out the Invention

[0022] To make the technical solution and its advantages of the present invention more clear, the technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of the present invention and are only used to explain the present invention, not to limit the present invention. It should be noted that, for ease of description, the accompanying drawings only show the parts / structures related to the present invention. Other related parts can refer to the general design. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0023] All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention. Furthermore, unless otherwise defined, technical or scientific terms used in the description of the present invention shall have the same meanings as those generally understood by persons of ordinary skill in the art to which the present invention belongs.

[0024] The present invention will be described in further detail below with reference to the accompanying drawings.

[0025] As shown in Figures 1-4, a spray device for a pipeline ice slurry cleaning system is installed on a movable cleaning body that can move in the pipeline and can be remotely controlled (such as a variable-diameter mobile trolley or robot, or a movable spray gun). It includes a nozzle outlet core 1, an outer sleeve 2, an adjustment core 3, a connecting inner sleeve 4, a connecting pipe 5, a first swirl pressure regulating body 6, and a second swirl pressure regulating body 7. The left end / outlet end of the outer sleeve 2 is installed with the nozzle outlet core 1, and the right end / inlet end of the outer sleeve 2 is installed on the connecting pipe 5. The characteristics are: an adjusting core 3 and a connecting inner cylinder 4 are installed in the outer sleeve 2 and between the nozzle outlet core 1 and the connecting pipe 5; the inner peripheral wall of the connecting inner cylinder 4 is connected (such as interference fit or tight fit) with a first swirl pressure regulating body 6 and a second swirl pressure regulating body 7; the axial position of the adjusting core 3 is adjustable; the adjusting core 3 is used to adjust the particle size uniformity and mixing uniformity of the ice slurry / ice particle mixed liquid; the first swirl pressure regulating body 6 and the second swirl pressure regulating body 7 are used to adjust the particle size uniformity, mixing uniformity and swirl performance of the ice slurry / ice particle mixed liquid.

[0026] Furthermore, the adjusting core 3 includes an outer cylinder portion 31, an inner cylinder portion 32, a first through hole 33, a guide wing / rib 34, a positioning hole 36, a screw / screw 37, a waist-shaped groove / hole 38, a pad 381, and a locking nut 39. The outer cylinder portion 31 and the inner cylinder portion 32 are connected by a plurality of guide wings 34 distributed along the circumferential direction. A first through hole 33 is provided in the center of the inner cylinder portion 32, a positioning hole 36 is provided on the outer peripheral surface of the outer cylinder portion 31, a waist-shaped groove 38 is provided on the outer sleeve 2, and the screw 37 passes through the waist-shaped groove 38 and is inserted into the positioning hole 36. An elastic pad 381 is installed between the screw 37 and the inner wall of the waist-shaped groove 38, and a locking nut 39 is installed on the screw 37 and on the outer peripheral surface of the outer sleeve 2. The locking nut 39 is used to lock the axial position of the adjusting core 3 after positioning.

[0027] When adjusting the axial position of the adjusting core 3, the adjusting core 3 is driven to move axially by the movement of the screw 37. After the axial position of the adjusting core 3 is determined, optionally, one or more elastic pads 381 are placed in the waist-shaped groove 38 to tighten the screw 37, and then the axial position of the screw 37 and the adjusting core 3 is locked by the locking nut 39.

[0028] The regulating core 3 further includes an arcuate protrusion 35 , which is provided on the outer peripheral surface of the inner cylinder 32 . The arcuate protrusion 35 includes a plurality of arcuate protrusions arranged along the axial direction, and is an annular protrusion.

[0029] The arc-shaped protrusion 35 has a protrusion height H. The protrusion height H gradually increases from the connection inner tube 4 side to the nozzle outlet core 1 side, and the outer diameter of the inner tube portion 32 also gradually increases.

[0030] The present invention provides a spray device for a pipeline ice slurry cleaning system. The design of an adjustment core 3 with adjustable axial position and an arc-shaped protrusion 35 can improve the collision and / or mixing effect of the ice slurry / ice particle mixture, thereby adjusting the particle size uniformity and mixing uniformity of the ice slurry / ice particle mixture, improving the spraying force of the spray device, and improving the cleaning effect of the ice slurry mixture on the inner wall of the pipeline.

[0031] Furthermore, the first swirl pressure regulating body 6 includes a first body 61, a first semicircular portion 62, a pressure regulating chamber outlet hole 63, a first swirl plate 64, a first swirl groove 65, and a first swirl plate 66. The pressure regulating chamber outlet hole 63 is provided at the left end of the inner circumference of the first body 61, and the first semicircular portion 62 is provided on the right side. A first semicircular pressure regulating chamber is formed in the first semicircular portion 62, and a first swirl plate 64 is provided on the inner circumferential wall of the first semicircular portion 62. The length direction of the first swirl plate 64 is the axial direction of the injection device, and multiple first swirl plates 64 are distributed along the circumferential direction; the outer circumferential surface of the first body 61 is provided with a first swirl groove 65 and a first swirl plate 66, and multiple first swirl grooves 65 and multiple first swirl plates 66 are alternately arranged along the circumferential direction.

[0032] The second swirl pressure regulating body 7 includes a second body 71, a second semicircular portion 72, a pressure regulating chamber inlet hole 73, a second swirl piece 74, a second swirl groove 75, and a second swirl piece 76. The second semicircular portion 72 is provided at the left end of the inner circumference of the second body 71, and the pressure regulating chamber inlet hole 73 is provided on the right side. A second semicircular pressure regulating chamber is formed in the second semicircular portion 72. The inner circumferential wall of the second semicircular portion 72 is provided with a second swirl piece 74. The length direction of the second swirl piece 74 is the axial direction of the injection device, and multiple second swirl pieces 74 are distributed along the circumferential direction; the outer circumferential surface of the second body 71 is provided with a second swirl groove 75 and a second swirl piece 76. Multiple second swirl grooves 75 and multiple second swirl pieces 76 are alternately arranged along the circumferential direction.

[0033] The first semicircular pressure regulating chamber and the second semicircular pressure regulating chamber together constitute a circular / spherical pressure regulating chamber, which is respectively connected to the pressure regulating chamber outlet hole 63 and the pressure regulating chamber inlet hole 73. The pressure regulating chamber outlet hole 63 is respectively adjacent to and connected to the first through hole 33 and the flow channel between the outer cylinder portion 31 and the inner cylinder portion 32. A plurality of first rectifier plates 64 and a plurality of second rectifier plates 74 are arranged in a one-to-one correspondence; the radial depth and thickness of the first rectifier plates 64 are both less than half (i.e., 0.5 times) the diameter of the pressure regulating chamber inlet hole 73, and the radial depth and thickness of the second rectifier plates 74 are both less than half (i.e., 0.5 times) the diameter of the pressure regulating chamber inlet hole 73.

[0034] In the circumferential direction, the upstream end of each first swirl blade 66 is arranged at a middle position corresponding to the downstream end of the second swirl groove 75. The angle between the second swirl blade 76 and the longitudinal line is b1, and the angle between the first swirl blade 66 and the longitudinal line is b2. The longitudinal line is perpendicular to the axial direction / axis of the injection device, and b2>b1, preferably b2=(1.03-1.5)b1, preferably 1.1-1.25 times.

[0035] The present invention provides a spray device for a pipeline ice slurry cleaning system. Through the design of a first swirl pressure regulating body 6 and a second swirl pressure regulating body 7, it is possible to adjust the particle size uniformity, mixing uniformity, and swirl performance of the ice slurry / ice particle mixture, thereby improving the spraying force of the spray device and thus improving the cleaning effect of the ice slurry mixture on the inner wall of the pipeline.

[0036] The outer periphery of the connecting inner tube 4 has a first threaded section 41, and the connecting inner tube 4 is threadedly connected to the first inner peripheral surface of the outer sleeve 2 through the first threaded section 41; the outer periphery of the connecting pipe 5 has a second threaded section 51, and the connecting pipe 5 is threadedly connected to the second inner peripheral surface of the outer sleeve 2 through the second threaded section 51. An inclined transition surface is provided between the first inner peripheral surface and the second inner peripheral surface, and an inclined portion 52 is provided at the left end portion of the connecting pipe 5, and the inclined portion 52 matches / is flush with the inclined transition surface.

[0037] The nozzle outlet core 1 includes an outlet hole 11, a contraction hole 12, and a step portion 13. The outlet hole 11 is opened in the center of the nozzle outlet core 1, and the contraction hole 12 is provided at the upstream end of the outlet hole 11. The contraction hole 12 is adjacent to and connected with the first through hole 33 and the flow channel between the outer cylinder portion 31 and the inner cylinder portion 32. The outer diameter of the contraction hole 12 is greater than or equal to the outer diameter of the flow channel. The nozzle outlet core 1 is positioned by matching the corresponding step portion on the inner circumference of the outer sleeve 2 through the step portion 13 provided on its outer circumference.

[0038] The present invention provides a spray device for a pipeline ice slurry cleaning system. The design of an adjustment core 3 with adjustable axial position and an arc-shaped protrusion 35 can improve the collision and / or mixing effect of the ice slurry / ice particle mixture, thereby adjusting / improving the particle size uniformity and mixing uniformity of the ice slurry / ice particle mixture, increasing the spraying force of the spray device, and improving the cleaning effect of the ice slurry mixture on the inner wall of the pipeline.

[0039] The present invention provides a spray device for a pipeline ice slurry cleaning system. Through the design of the first swirl pressure regulating body 6 and the second swirl pressure regulating body 7, it can adjust / improve the particle size uniformity, mixing uniformity, and swirl performance of the ice slurry / ice particle mixture, thereby improving the spraying force of the spray device and thus improving the cleaning effect of the ice slurry mixture on the inner wall of the pipeline.

[0040] The above-mentioned embodiments are illustrative of the present invention, not limiting thereof. It is understood that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spraying device for a pipeline ice slurry cleaning system, the spraying device is installed on a movable cleaning main body that can move in the pipeline and can be remotely controlled, and it includes a nozzle outlet core (1), an outer sleeve (2), an adjusting core (3), a connecting inner cylinder (4), a connecting pipe (5), a first swirl pressure regulating body (6), and a second swirl pressure regulating body (7). The nozzle outlet core is installed at the left end of the outer sleeve, and the right end of the outer sleeve is installed on the connecting pipe. It is characterized in that: An adjusting core and a connecting inner cylinder are installed inside the outer sleeve and between the nozzle outlet core and the connecting pipe. The inner peripheral wall of the connecting inner cylinder is connected with a first swirl pressure regulating body and a second swirl pressure regulating body. The axial position of the adjusting core is adjustable. The adjusting core is used to adjust the particle size uniformity and mixing uniformity of the ice slurry / ice particle mixture. The first swirl pressure regulating body and the second swirl pressure regulating body are used to adjust the particle size uniformity, mixing uniformity and swirl performance of the ice slurry / ice particle mixture.

2. The injection device for a pipeline ice slurry cleaning system according to claim 1, characterized in that The adjusting core (3) includes an outer cylinder part (31), an inner cylinder part (32), a first through hole (33), a guide vane (34), a positioning hole (36), a screw (37), a kidney-shaped groove (38), a cushion block (381), and a locking nut (39). The outer cylinder part and the inner cylinder part are connected by a plurality of guide vanes distributed circumferentially. A first through hole is opened in the center of the inner cylinder part. A positioning hole is opened on the outer peripheral surface of the outer cylinder part. A kidney-shaped groove is opened on the outer sleeve. The screw passes through the kidney-shaped groove and then inserts into the positioning hole. An elastic cushion block is installed between the screw and the inner wall of the kidney-shaped groove. A locking nut is installed on the screw and located on the outer peripheral surface of the outer sleeve. The locking nut is used to lock the adjusting core after positioning its axial position.

3. The injection device for a pipeline ice slurry cleaning system according to claim 2, characterized in that, The adjusting core (3) further includes an arc-shaped convex part (35). The arc-shaped convex part is arranged on the outer peripheral surface of the inner cylinder part. The arc-shaped convex part includes a plurality of arc-shaped convex parts arranged axially. The arc-shaped convex part is an annular convex part.

4. The injection device for a pipeline ice slurry cleaning system according to claim 3, characterized in that, The arc-shaped convex part (35) has a convex height H. From the side of the connecting inner cylinder (4) to the side of the nozzle outlet core (1), the convex height H gradually increases, and the outer diameter of the inner cylinder part (32) also gradually increases.

5. The injection device for a pipeline ice slurry cleaning system according to claim 4, characterized in that, The first swirl pressure regulating body (6) includes a first body (61), a first semi-circular part (62), a pressure regulating cavity outlet hole (63), a first rectifying fin (64), a first swirl groove (65), and a first swirl fin (66). A pressure regulating cavity outlet hole is arranged at the left end of the inner peripheral side of the first body, and a first semi-circular part is arranged on the right side. A first semi-circular pressure regulating cavity is formed inside the first semi-circular part. A first rectifying fin is arranged on the inner peripheral wall of the first semi-circular part. The length direction of the first rectifying fin is the axial direction of the spraying device. A plurality of first rectifying fins are distributed circumferentially; a first swirl groove and a first swirl fin are arranged on the outer peripheral surface of the first body. A plurality of first swirl grooves and a plurality of first swirl fins are alternately arranged circumferentially at intervals.

6. The injection device for a pipeline ice slurry cleaning system according to claim 5, characterized in that, The second swirl pressure regulating body (7) includes a second body (71), a second semi-circular part (72), a pressure regulating cavity inlet hole (73), a second rectifying fin (74), a second swirl groove (75), and a second swirl fin (76). A second semi-circular part is arranged at the left end of the inner peripheral side of the second body, and a pressure regulating cavity inlet hole is arranged on the right side. A second semi-circular pressure regulating cavity is formed inside the second semi-circular part. A second rectifying fin is arranged on the inner peripheral wall of the second semi-circular part. The length direction of the second rectifying fin is the axial direction of the spraying device. A plurality of second rectifying fins are distributed circumferentially; a second swirl groove and a second swirl fin are arranged on the outer peripheral surface of the second body. A plurality of second swirl grooves and a plurality of second swirl fins are alternately arranged circumferentially at intervals.

7. The injection device for a pipeline ice slurry cleaning system according to claim 6, characterized in that, The first semi-circular pressure regulating chamber and the second semi-circular pressure regulating chamber together form a circular / spherical pressure regulating chamber. The circular / spherical pressure regulating chamber is respectively communicated with the pressure regulating chamber outlet hole and the pressure regulating chamber inlet hole. The pressure regulating chamber outlet hole is respectively adjacent to and communicated with the first through hole and the flow passage between the outer cylinder part and the inner cylinder part. A plurality of first flow rectifying pieces and a plurality of second flow rectifying pieces are arranged in one-to-one correspondence; the radial depth and thickness of the first flow rectifying piece (64) are both less than half of the diameter of the pressure regulating chamber inlet hole, and the radial depth and thickness of the second flow rectifying piece (74) are both less than half of the diameter of the pressure regulating chamber inlet hole.

8. The injection device for a pipeline ice slurry cleaning system according to claim 7, characterized in that, In the circumferential direction, the upstream end of each first swirl vane (66) is arranged corresponding to the middle position of the downstream end of the second swirl groove (75). The angle between the second swirl vane (76) and the longitudinal line is b1, and the angle between the first swirl vane and the longitudinal line is b2. The longitudinal line is perpendicular to the axis of the injection device, and b2>b1, b2 = 1.03 - 1.5 times b1.

9. The injection device for a pipeline ice slurry cleaning system according to claim 8, characterized in that, The outer circumference of the connecting inner cylinder (4) has a first threaded section (41). The connecting inner cylinder is threadedly connected to the first inner circumferential surface of the outer sleeve (2) through the first threaded section; the outer circumference of the connecting pipe (5) has a second threaded section (51). The connecting pipe is threadedly connected to the second inner circumferential surface of the outer sleeve through the second threaded section. An inclined transition surface is arranged between the first inner circumferential surface and the second inner circumferential surface. The left end of the connecting pipe is provided with an inclined part (52), and the inclined part is matched with the inclined transition surface.

10. The injection device for a pipeline ice slurry cleaning system according to claim 9, characterized in that, The nozzle outlet core (1) includes an outlet hole (11), a contraction hole (12), and a step part (13). An outlet hole is opened at the center of the nozzle outlet core. A contraction hole is arranged at the upstream end of the outlet hole. The contraction hole is adjacent to and communicated with the first through hole (33) and the flow passage between the outer cylinder part and the inner cylinder part. The outer diameter of the contraction hole is greater than or equal to the outer diameter of the flow passage. The nozzle outlet core is positioned by being matched with the corresponding step part on the inner circumferential surface of the outer sleeve through the step part arranged on its outer circumferential surface.

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