An injection device for a pipeline ice slurry cleaning system

Abstract

The present invention discloses a spraying device for a pipeline ice slurry cleaning system. The spraying device is installed on a movable cleaning body that can move inside the pipeline and can be remotely controlled. 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, and the axial position of the adjusting core can be adjusted. The adjusting core, 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, improve the spraying force of the spraying device, and thus improve the cleaning effect of the ice slurry mixture on the inner wall of the pipeline.

Description

Technical Field

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

[0002] The ice slurry / ice particle cleaning technology is a new cleaning technology with excellent cleaning effect compared with the traditional pipeline cleaning technology. A pipeline ice slurry cleaning system generally includes an ice making device, a conveying device, a spraying device, a pump, etc. However, the existing spraying devices for pipeline ice slurry cleaning systems still have problems such as poor particle size uniformity and mixing uniformity of the ice slurry / ice particle mixture, and poor spraying force / spraying cleaning effect. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a spraying device for a pipeline ice slurry cleaning system. Through the design of an adjustment core with adjustable axial position, an arc-shaped convex part and / or a first swirl pressure regulating body and a second swirl pressure regulating body, the collision and / or mixing effect of the ice slurry / ice particle mixture can be improved, so that the particle size uniformity, mixing uniformity and swirl performance of the ice slurry / ice particle mixture can be adjusted, the spraying force of the spraying device can be increased, and thus the cleaning effect of the ice slurry mixture on the inner wall of the pipeline can be improved.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A spraying device for a pipeline ice slurry cleaning system, the spraying device is installed on a movable and remotely controllable cleaning main body that can move in the pipeline, and it includes a nozzle outlet core (1), an outer sleeve (2), an adjustment 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 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. It is characterized in that: an adjustment core and a connecting inner cylinder are installed in the outer sleeve between the nozzle outlet core and the connecting pipe. The inner peripheral wall of the connecting inner cylinder is connected with the first swirl pressure regulating body and the second swirl pressure regulating body. The axial position of the adjustment core is adjustable, and the adjustment 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.

[0006] Further, the adjusting core (3) includes an outer cylinder part (31), an inner cylinder part (32), a first through hole (33), a flow guiding wing (34), a positioning hole (36), a screw rod (37), a waist-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 flow guiding wings distributed circumferentially. A first through hole is formed in the center of the inner cylinder part. A positioning hole is formed in the outer peripheral surface of the outer cylinder part. A waist-shaped groove is formed in the outer sleeve. The screw rod passes through the waist-shaped groove and is inserted into the positioning hole. An elastic cushion block is installed between the screw rod and the inner wall of the waist-shaped groove. A locking nut is installed on the screw rod 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.

[0007] Further, 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.

[0008] Further, the arc-shaped convex part (35) has a convex height H. From the side connecting to the 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.

[0009] Further, 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. 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.

[0010] Further, 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. 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.

[0011] Further, the first semi-circular pressure regulating chamber and the second semi-circular pressure regulating chamber together form a circular / spherical pressure regulating chamber, and the circular / spherical pressure regulating chamber is respectively communicated with a pressure regulating chamber outlet hole and a pressure regulating chamber inlet hole. The pressure regulating chamber outlet hole is respectively adjacent to and communicated with a first through hole and a flow channel between the outer cylinder part and the inner cylinder part. A plurality of first rectifying fins and a plurality of second rectifying fins are arranged in one-to-one correspondence. The radial depth and thickness of the first rectifying fin (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 rectifying fin (74) are both less than half of the diameter of the pressure regulating chamber inlet hole.

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

[0013] Further, the outer circumference of the connecting inner cylinder (4) has a first threaded section (41), and 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), and 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.

[0014] Further, the nozzle outlet core (1) includes an outlet hole (11), a contraction hole (12), and a stepped 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 channel 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 channel. The nozzle outlet core is positioned by matching the stepped part provided on its outer circumferential surface with the corresponding stepped part on the inner circumferential surface of the outer sleeve.

[0015] An injection device for a pipeline ice slurry cleaning system according to the present invention can improve the collision and / or mixing effect of the ice slurry / ice particle mixture through the design of an axially position-adjustable adjusting core and an arc-shaped convex part, thereby being able to adjust / improve the particle size uniformity and mixing uniformity of the ice slurry / ice particle mixture, improve the injection force of the injection device, and improve the cleaning effect of the ice slurry mixture on the inner wall of the pipeline.

[0016] An injection device for a pipeline ice slurry cleaning system according to the present invention can adjust / improve the particle size uniformity, mixing uniformity, and swirl performance of the ice slurry / ice particle mixture through the design of a first swirl pressure regulating body and a second swirl pressure regulating body, improve the injection force of the injection device, and thereby improve the cleaning effect of the ice slurry mixture on the inner wall of the pipeline. Brief Description of the Drawings

[0017] Figure 1 This is a schematic structural diagram of the injection device for the pipeline ice slurry cleaning system of the present invention;

[0018] Figure 2 This is a schematic structural diagram of the injection device for the pipeline ice slurry cleaning system of the present invention;

[0019] Figure 3 This is a schematic structural diagram of the injection device for the pipeline ice slurry cleaning system of the present invention;

[0020] Figure 4 This is a schematic structural diagram of the swirl tank of the present invention.

[0021] In the figure: nozzle outlet core 1, outer sleeve 2, adjusting core 3, connecting inner cylinder 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 convex portion 35, positioning hole 36, screw / screw 37, waist-shaped groove / hole 38, spacer 381, locking nut 39, first thread section 41, second thread section 51, inclined portion 52, first body 61, first semi-circular portion 62, pressure regulating cavity outlet hole 63, first rectifying fin 64, first swirl tank 65, first swirl fin 66, second body 71, second semi-circular portion 72, pressure regulating cavity inlet hole 73, second rectifying fin 74, second swirl tank 75, second swirl fin 76, "←↓" fluid flow direction. Detailed Description of the Preferred Embodiments

[0022] To make the technical solutions and their advantages of the present invention clearer, the technical solutions of the present invention will be further described clearly and completely below with reference to the accompanying drawings. It can be understood that the specific embodiments described herein are only partial embodiments of the present invention, which are only used to explain the present invention and are not intended to limit the present invention. It should be noted that for the sake of description, only the parts / structures related to the present invention are shown in the drawings, and other related parts can refer to the general design. Without conflict, the embodiments and the technical features in the embodiments of the present invention can be combined with each other to obtain new embodiments.

[0023] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention. In addition, unless otherwise defined, the technical terms or scientific terms used in the description of the present invention should have the ordinary meanings understood by those of ordinary skill in the art in the field to which the present invention belongs.

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

[0025] As Figures 1-4As shown in the figure, a spraying device for a pipeline ice slurry cleaning system is installed on a movable cleaning body that can move inside the pipeline and can be remotely controlled (such as a variable-diameter mobile trolley or a robot, or a movable spray gun). 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 1 is installed at the left end / outlet end of the outer sleeve 2, and the right end / import end of the outer sleeve 2 is installed on the connecting pipe 5. It is characterized in that: an adjusting core 3 and a connecting inner cylinder 4 are installed inside 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 with (such as interference fit or tight fit) a first swirl pressure regulating body 6 and a second swirl pressure regulating body 7. The axial position of the adjusting core 3 can be adjusted. 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 part 31, an inner cylinder part 32, a first through hole 33, a guide vane / rib 34, a positioning hole 36, a screw / screw 37, a waist-shaped groove / hole 38, a cushion block 381, and a lock nut 39. The outer cylinder part 31 and the inner cylinder part 32 are connected by a plurality of guide vanes 34 distributed circumferentially. A first through hole 33 is opened at the center of the inner cylinder part 32. A positioning hole 36 is opened on the outer peripheral surface of the outer cylinder part 31. A waist-shaped groove 38 is opened on the outer sleeve 2. The screw 37 passes through the waist-shaped groove 38 and then is inserted into the positioning hole 36. An elastic cushion block 381 is installed between the screw 37 and the inner wall of the waist-shaped groove 38. A lock nut 39 is installed on the screw 37 and on the outer peripheral surface of the outer sleeve 2. The lock 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. When the axial position of the adjusting core 3 is determined, optionally, one or more elastic cushion blocks 381 are padded in the waist-shaped groove 38 to pad tightly the screw 37, and then the axial positions of the screw 37 and the adjusting core 3 are locked by the lock nut 39.

[0028] The adjusting core 3 further includes an arc-shaped protrusion part 35. The arc-shaped protrusion part 35 is arranged on the outer peripheral surface of the inner cylinder part 32. The arc-shaped protrusion part 35 includes a plurality of arc-shaped protrusions arranged axially. The arc-shaped protrusion part 35 is an annular protrusion part.

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

[0030] An injection device for a pipeline ice slurry cleaning system according to the present invention can improve the collision and / or mixing effect of the ice slurry / ice particle mixture through the design of the adjusting core 3 with adjustable axial position and the arc-shaped convex part 35, thereby being able to adjust the particle size uniformity and mixing uniformity of the ice slurry / ice particle mixture, improve the injection force of the injection device, and enhance the cleaning effect of the ice slurry mixture on the inner wall of the pipeline.

[0031] Further, the first swirl pressure regulating body 6 includes a first body 61, a first semi-circular part 62, a pressure regulating chamber outlet hole 63, a first rectifying fin 64, a first swirl groove 65, and a first swirl vane 66. The left end of the inner peripheral side of the first body 61 is provided with the pressure regulating chamber outlet hole 63, and the right side is provided with the first semi-circular part 62. A first semi-circular pressure regulating chamber is formed inside the first semi-circular part 62. The inner peripheral wall of the first semi-circular part 62 is provided with the first rectifying fin 64. The length direction of the first rectifying fin 64 is the axial direction of the injection device, and a plurality of first rectifying fins 64 are circumferentially distributed; the outer peripheral surface of the first body 61 is provided with the first swirl groove 65 and the first swirl vane 66, and a plurality of first swirl grooves 65 and a plurality of first swirl vanes 66 are alternately arranged at intervals in the circumferential direction.

[0032] The second swirl pressure regulating body 7 includes a second body 71, a second semi-circular part 72, a pressure regulating chamber inlet hole 73, a second rectifying fin 74, a second swirl groove 75, and a second swirl vane 76. The left end of the inner peripheral side of the second body 71 is provided with the second semi-circular part 72, and the right side is provided with the pressure regulating chamber inlet hole 73. A second semi-circular pressure regulating chamber is formed inside the second semi-circular part 72. The inner peripheral wall of the second semi-circular part 72 is provided with the second rectifying fin 74. The length direction of the second rectifying fin 74 is the axial direction of the injection device, and a plurality of second rectifying fins 74 are circumferentially distributed; the outer peripheral surface of the second body 71 is provided with the second swirl groove 75 and the second swirl vane 76, and a plurality of second swirl grooves 75 and a plurality of second swirl vanes 76 are alternately arranged at intervals in the circumferential direction.

[0033] 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 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 part 31 and the inner cylinder part 32. A plurality of first rectifying fins 64 and a plurality of second rectifying fins 74 are arranged in one-to-one correspondence; the radial depth and thickness of the first rectifying fin 64 are both less than half (i.e., 0.5 times) of the diameter of the pressure regulating chamber inlet hole 73, and the radial depth and thickness of the second rectifying fin 74 are both less than half (i.e., 0.5 times) of the diameter of the pressure regulating chamber inlet hole 73.

[0034] 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 66 and the longitudinal line is b2. The longitudinal line is perpendicular to the axial line of the spraying device, and b2 > b1. Preferably, b2 = (1.03 - 1.5)b1, preferably 1.1 - 1.25 times.

[0035] A spraying device for a pipeline ice slurry cleaning system according to the present invention can adjust the particle size uniformity, mixing uniformity, and swirl performance of the ice slurry / ice particle mixture through the designs of the first swirl pressure regulating body 6 and the second swirl pressure regulating body 7, improve the spraying force of the spraying device, and thus improve the cleaning effect of the ice slurry mixture on the inner wall of the pipeline.

[0036] The outer circumference of the connecting inner cylinder 4 has a first thread section 41. The connecting inner cylinder 4 is threadedly connected to the first inner circumferential surface of the outer sleeve 2 through the first thread section 41. The outer circumference of the connecting pipe 5 has a second thread section 51. The connecting pipe 5 is threadedly connected to the second inner circumferential surface of the outer sleeve 2 through the second thread section 51. 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 5 is provided with an inclined portion 52, and the inclined portion 52 is matched / flush with the inclined transition surface.

[0037] The nozzle outlet core 1 includes an outlet hole 11, a contraction hole 12, and a stepped portion 13. An outlet hole 11 is opened at the center of the nozzle outlet core 1. A contraction hole 12 is arranged at the upstream end of the outlet hole 11. The contraction hole 12 is adjacent to and communicates with the first through hole 33 and the flow path 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 this flow path. The nozzle outlet core 1 is positioned by cooperating with the corresponding stepped portion on the inner circumferential surface of the outer sleeve 2 through the stepped portion 13 provided on its outer circumferential surface.

[0038] A spraying device for a pipeline ice slurry cleaning system according to the present invention can improve the collision and / or mixing effect of the ice slurry / ice particle mixture through the designs of the axially position - adjustable regulating core 3 and the arc - shaped convex portion 35, and thus can adjust / improve the particle size uniformity and mixing uniformity of the ice slurry / ice particle mixture, improve the spraying force of the spraying device, and improve the cleaning effect of the ice slurry mixture on the inner wall of the pipeline.

[0039] A spraying device for a pipeline ice slurry cleaning system according to the present invention can adjust / improve the particle size uniformity, mixing uniformity, and swirl performance of the ice slurry / ice particle mixture through the designs of the first swirl pressure regulating body 6 and the second swirl pressure regulating body 7, improve the spraying force of the spraying device, and thus improve the cleaning effect of the ice slurry mixture on the inner wall of the pipeline.

[0040] The above embodiments are illustrative of the present invention and not restrictive thereof. It is understood that various changes, modifications, substitutions, and variations can 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. An injection device for a pipeline ice slurry cleaning system. The injection device is installed on a movable cleaning body that can move within the pipeline and can be remotely controlled. It includes a nozzle outlet core (1), an outer sleeve (2), an adjustment 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 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. It is characterized in that: An adjustment core and a connecting inner cylinder are installed within 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 adjustment core is adjustable. The adjustment 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. The adjustment 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 on the outer peripheral surface of the outer sleeve. The locking nut is used to lock the adjustment core after positioning its axial position.

2. An injection device for a pipeline ice slurry cleaning system according to claim 1, It is characterized in that, The adjustment core (3) further includes an arc-shaped protrusion part (35). The arc-shaped protrusion part is arranged on the outer peripheral surface of the inner cylinder part. The arc-shaped protrusion part includes a plurality of arc-shaped protrusion parts arranged axially. The arc-shaped protrusion part is a ring-shaped protrusion part.

3. An injection device for a pipeline ice slurry cleaning system according to claim 2, It is characterized in that, The arc-shaped protrusion part (35) has a protrusion height H. From the side of the connecting inner cylinder (4) to the side of the nozzle outlet core (1), the protrusion height H gradually increases, and the outer diameter of the inner cylinder part (32) also gradually increases.

4. An injection device for a pipeline ice slurry cleaning system according to claim 3, It is 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). The left end of the inner peripheral side of the first body is provided with the pressure regulating cavity outlet hole, and the right side is provided with the first semi-circular part. A first semi-circular pressure regulating cavity is formed within the first semi-circular part. The inner peripheral wall of the first semi-circular part is provided with the first rectifying fin. The length direction of the first rectifying fin is the axial direction of the injection device. A plurality of first rectifying fins are distributed circumferentially; the outer peripheral surface of the first body is provided with the first swirl groove and the first swirl fin. A plurality of first swirl grooves and a plurality of first swirl fins are alternately arranged circumferentially.

5. The injection device for a pipeline ice slurry cleaning system according to claim 4, characterized in that, the second swirl pressure regulating body (7) includes a second body (71), a second semi-circular portion (72), a pressure regulating chamber inlet hole (73), a second rectifying fin (74), a second swirl groove (75), and a second swirl vane (76). At the left end of the inner peripheral side of the second body, a second semi-circular portion is provided, and a pressure regulating chamber inlet hole is provided on the right side. A second semi-circular pressure regulating chamber is formed within the second semi-circular portion. The inner peripheral wall of the second semi-circular portion is provided with second rectifying fins. The length direction of the second rectifying fins is the axial direction of the injection device, and a plurality of second rectifying fins are circumferentially distributed; on the outer peripheral surface of the second body, a second swirl groove and a second swirl vane are provided, and a plurality of second swirl grooves and a plurality of second swirl vanes are alternately arranged at intervals in the circumferential direction.

6. The injection device for a pipeline ice slurry cleaning system according to claim 5, 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, and the circular / spherical pressure regulating chamber is respectively connected and 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 channel between the outer cylinder part and the inner cylinder part. A plurality of first rectifying fins and a plurality of second rectifying fins are arranged in one-to-one correspondence; the radial depth and thickness of the first rectifying fin (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 rectifying fin (74) are both less than half of the diameter of the pressure regulating chamber inlet hole.

7. The injection device for a pipeline ice slurry cleaning system according to claim 6, 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 included angle between the second swirl vane (76) and the longitudinal line is b1, and the included 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, and b2 = 1.03 - 1.5 times b1.

8. The injection device for a pipeline ice slurry cleaning system according to claim 7, characterized in that, the outer periphery of the connecting inner cylinder (4) has a first thread section (41), and the connecting inner cylinder is threadedly connected to the first inner peripheral surface of the outer sleeve (2) through the first thread section; the outer periphery of the connecting pipe (5) has a second thread section (51), and the connecting pipe is threadedly connected to the second inner peripheral surface of the outer sleeve through the second thread section. An inclined transition surface is provided between the first inner peripheral surface and the second inner peripheral surface. The left end of the connecting pipe is provided with an inclined portion (52), and the inclined portion is matched with the inclined transition surface.

9. The injection device for a pipeline ice slurry cleaning system according to claim 8, characterized in that, the nozzle outlet core (1) includes an outlet hole (11), a contraction hole (12), and a step portion (13). An outlet hole is provided at the center of the nozzle outlet core. A contraction hole is provided 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 channel 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 channel. The nozzle outlet core is positioned by cooperating with the corresponding step portion on the inner peripheral surface of the outer sleeve through the step portion provided on its outer peripheral surface.

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