Nozzle for cavitation surface treatment and cavitation surface treatment device

Abstract

The utility model provides a kind of nozzle (10) for cavitation surface treatment, the nozzle (10) for cavitation surface treatment has nozzle head (13), the nozzle head (13) has: first plane (13a), it sprays liquid, and with jet axis (1) vertical;Second plane (13b), it is vertical with jet axis (1), is the opposite side of first plane (13a);Nozzle hole (21), the nozzle hole (21) has: semicylindrical discharge groove (23), it is configured in first plane (13a), extends in the first direction with jet axis (1) vertical;Ejection hole (25), it extends along jet axis (1), and is connected with discharge groove (23), and for the straight elliptical cylinder with long diameter in the first direction extending ellipse-shaped section;Import portion (27), it has straight conical surface (27a) with jet axis (1) as central axis, and is connected to ejection hole (25).

Description

Technical Field

[0001] This utility model relates to a nozzle for cavitation surface treatment and a cavitation surface treatment device. Background Technology

[0002] A nozzle is known, which has a plate, a hollow body and a cover mounted on the hollow body and holding the plate in the hollow body (US2024 / 0001549A1, hereinafter, Patent Document 1). Utility Model Content

[0003] According to Patent Document 1, there are cases where high compressive stress is not applied and cases where the surface grinding amount is small.

[0004] The purpose of this invention is to provide a cavitation surface treatment nozzle and a cavitation surface treatment device that can apply strong compressive stress to the surface of an object and promote the grinding of the object surface.

[0005] The first aspect of this invention is a nozzle for cavitation surface treatment, wherein the nozzle for cavitation surface treatment has a nozzle head.

[0006] The nozzle head has:

[0007] A first plane, from which liquid is ejected, is perpendicular to the jet axis;

[0008] A second plane, perpendicular to the jet axis, is the opposite plane to the first plane; and

[0009] Nozzle orifice, the nozzle orifice having:

[0010] A semi-cylindrical discharge groove is disposed on the first plane and extends in a first direction perpendicular to the spray axis;

[0011] An ejection orifice, extending along the ejection axis and connected to the discharge groove, is a straight elliptical cylinder with an elliptical cross-section having a major axis extending in the first direction; and

[0012] The inlet portion has a straight conical surface centered on the jet axis and is connected to the jet hole.

[0013] The second aspect of this invention is a cavitation surface treatment device, which has the following features:

[0014] The treatment tank stores the treatment solution;

[0015] A workbench is disposed within the processing tank and on which a workpiece is placed;

[0016] The cavitation surface treatment nozzle; and

[0017] The nozzle tube is capable of housing the cavitation surface treatment nozzle and is movable relative to the worktable in the front-back, up-down, and left-right directions.

[0018] Nozzle heads can be made of gemstones, synthetic gemstones, or sintered bodies with synthetic gemstones as the main component. Nozzle heads can also be made of sintered industrial-grade polycrystalline or single-crystal materials such as diamond, or as an adjunct mixture of natural, synthetic, or crystalline materials with a Mohs hardness of 8 or higher. Nozzle heads can also be made of corundum, diamond, or synthetic diamond sintered bodies.

[0019] Two planes are essentially the same if they contain other planes within a range of 0.5 mm from one plane.

[0020] The support platform and the nozzle head can be separate components. Alternatively, the nozzle head and support platform can be formed as a single piece. For example, the nozzle head and support platform can be made of the same material.

[0021] The discharge channel may have sides that are flat at both ends.

[0022] The discharge channel may have an opening, and the cross-section of the jet through hole narrows as it moves toward the nozzle head chamber. The opening is located inside the cross-section of the jet through hole in the connection with the nozzle head chamber.

[0023] The nozzle tube may have a nozzle chamber that abuts against a cavitation surface treatment nozzle for insertion. The cavitation surface treatment apparatus may also have a nozzle cover disposed at the front end of the nozzle tube to secure the cavitation surface treatment nozzle to the nozzle tube.

[0024] Corrosion-resistant alloys include stainless steel, nickel steel, and nickel aluminum compounds.

[0025] Preferably, the spray angle is 5 degrees to 15 degrees. More preferably, the spray angle is 7 degrees to 10 degrees.

[0026] The treatment solution stored in the treatment tank consists of, for example, rust inhibitors and water.

[0027] The grinding material can also be suspended in the processing liquid stored in the processing tank.

[0028] According to this invention, strong compressive stress can be applied to the surface of an object, and the grinding of the object surface can be promoted. Attached Figure Description

[0029] Figure 1 This is a perspective view of the cavitation surface treatment nozzle of this embodiment.

[0030] Figure 2 This is a perspective view of the cavitation surface treatment nozzle of this embodiment.

[0031] Figure 3 yes Figure 1 The III arrow view.

[0032] Figure 4 yes Figure 3 Sectional view along line IV-IV.

[0033] Figure 5 yes Figure 3 VV-line cross-section diagram.

[0034] Figure 6 This is the cavitation surface treatment apparatus of this embodiment.

[0035] Figure 7 This is an enlarged view of the cavitation surface treatment apparatus of this embodiment.

[0036] Symbol Explanation

[0037] 1. Injection axis

[0038] 10 Nozzles for cavitation surface treatment

[0039] 11 Nozzle body

[0040] 13 nozzle heads

[0041] 13a First plane

[0042] 13b Second Plane

[0043] 15 support platforms

[0044] 21 Nozzle orifice

[0045] 23 Discharge Tank

[0046] 25 nozzles

[0047] 27 Import Department Detailed Implementation

[0048] like Figures 1-5 As shown, the nozzle (nozzle for cavitation surface treatment) 10 of this embodiment has a nozzle body 11. The nozzle body 11 has a nozzle head 13 and a support platform 15. The nozzle 10 has a spray axis 1. For convenience, the first direction is defined as the X direction, the extension direction of the spray axis 1 is defined as the Z direction, and the direction perpendicular to the X and Z directions is defined as the Y direction.

[0049] The nozzle head 13 is a straight cylinder centered on the injection axis 1. The nozzle head 13 is a diamond sintered body. The nozzle head 13 has a first plane 13a, a second plane 13b, a cylindrical surface 13c, and a nozzle orifice 21. The first plane 13a and the second plane 13b are perpendicular to the injection axis 1.

[0050] The nozzle orifice 21 is arranged centered on the injection axis 1. The nozzle orifice 21 has a discharge groove 23, an ejection hole 25, and an inlet 27.

[0051] The discharge channel 23 has a side surface 23a and an opening 23b. The discharge channel 23 is disposed on a first plane 13a. The discharge channel 23 extends along the X direction. The cross-section of the discharge channel 23 parallel to the YZ plane is semi-circular. The side surface 23a is a plane. The side surface 23a are the two end faces of the discharge channel 23, extending parallel to the YZ plane. The opening 23b is an opening on the first plane 13a of the discharge channel 23. The opening 23b is rectangular.

[0052] The ejection orifice 25 extends along the ejection axis 1. The ejection orifice 25 is a straight elliptical cylinder. For example... Figure 3 As shown, the cross-section of the nozzle 25 in the XY plane is elliptical. The center of the cross-section is located on the injection axis 1. The major axis of the cross-section extends along the X direction.

[0053] The inlet portion 27 is a straight conical shape. The inlet portion 27 is a rotating body centered on the jet axis 1. The inlet portion 27 has a straight conical surface 27a. The diameter of the straight conical surface 27a decreases as it faces the first plane 13a. The straight conical surface 27a is directly connected to the elliptical cylindrical surface of the jet hole 25.

[0054] The support platform 15 has a nozzle head chamber 15a, a second bottom surface 15b, a first bottom surface 15c, and a jet passage hole 15d. The support platform 15 is a straight cylinder centered on the jet axis 1. The support platform 15 is, for example, made of stainless steel. The first bottom surface 15c and the second plane 13b of the nozzle head 13 are substantially the same surface. The distance between the first bottom surface 15c and the second plane 13b is, for example, less than 0.5 mm.

[0055] The nozzle head chamber 15a is a straight cylinder centered on the injection axis 1, extending from the first bottom surface 15c. The nozzle head 13 abuts against the nozzle head chamber 15a on both sides of the first plane 13a and the cylindrical surface 13c. The nozzle head 13 is fixed to the nozzle head chamber 15a. The jet flow through hole 15d is a straight cylinder centered on the injection axis 1. The jet flow through hole 15d can also be a stepped hole. The jet flow through hole 15d has a small diameter portion 15d1, a large diameter portion 15d2, and an enlarged portion 15d3. The diameter of the small diameter portion 15d1 is smaller than the diameter of the large diameter portion 15d2. The enlarged portion 15d3 smoothly connects the small diameter portion 15d1 and the large diameter portion 15d2. The enlarged portion 15d3 is, for example, a straight circular truncated cone. The cross-sectional shape of the enlarged portion 15d3 can also be a gently enlarging trumpet shape or a bell shape. Figure 3 As shown, the cross-section of the small-diameter portion 15d1 is larger than that of the opening 23b. In other words, the entire edge of the opening 23b is contained within the cross-section of the small-diameter portion 15d1. The jet stream passes through the orifice 15d and connects to the nozzle head chamber 15a. The jet stream through-hole 15d can also be a straight elliptical cylinder, a straight cone, a trumpet, or a bell. The cross-section of the conical jet stream orifice expands as it moves away from the nozzle head 13.

[0056] like Figure 6 As shown, the cavitation surface treatment apparatus 50 includes a treatment tank 51, a nozzle tube 57, a gasket 58, a cover 59, a nozzle 10, a worktable 53, a high-pressure pump 56, and a moving device 55.

[0057] The processing tank 51 stores the processing fluid. A worktable 53 is disposed within the processing tank 51. The workpiece 3 is placed on the worktable 53. Alternatively, the abrasive material can be suspended in the processing fluid within the processing tank 51.

[0058] Nozzle 10 is disposed in nozzle tube 57. Nozzle tube 57 has nozzle chamber 57a, external thread 57b, fluid passage 57c, and gasket groove 57d. Nozzle chamber 57a is a straight cylindrical shape and opens at the front end of nozzle tube 57. Nozzle chamber 57a is connected to fluid passage 57c. Nozzle 10 is disposed in nozzle chamber 57a. Nozzle chamber 57a, external thread 57b, fluid passage 57c, and gasket groove 57d are coaxially arranged with injection axis 1. Gasket groove 57d is disposed on the bottom surface of nozzle chamber 57a. Nozzle 10 abuts against nozzle chamber 57a. Gasket 58 is, for example, an O-ring. Gasket 58 is disposed in gasket groove 57d, sealing between nozzle tube 57 and nozzle 10. Cover 59 has internal thread 59a and injection passage 59b. Injection passage 59b is connected to injection through hole 15d.

[0059] The high-pressure pump 56 is, for example, a plunger pump. The high-pressure pump 56 is connected to the fluid passage 57c. The moving device 55 is connected to the nozzle pipe 57. The moving device 55 enables the nozzle pipe 57 to move in the left-right, up-down, and back-forward directions.

[0060] like Figure 7As shown, according to the nozzle 10 of this embodiment, the treatment water supplied from the high-pressure pump 56 flows into the nozzle 25 from the inlet 27 and is rectified and accelerated. Since the first bottom surface 15c and the second plane 13b are substantially the same, the treatment liquid flows smoothly into the inlet 27. The treatment liquid is ejected from the elliptical cylindrical nozzle 25 through the discharge channel 23. The rectified treatment water is strongly ejected from the nozzle 25 and diffuses in a flat pattern in the XZ plane through the discharge channel 23. Since the nozzle 25 is elliptical cylindrical, the ejected treatment liquid easily diffuses in the X direction. Preferably, the spray angle is 5 degrees to 15 degrees. More preferably, the spray angle is 7 degrees to 10 degrees. As a result, the treatment liquid stored in the treatment tank 51 rapidly diffuses in the XZ plane, promoting the generation of cavitation bubbles. Furthermore, the treatment liquid containing a large number of cavitation bubbles collides with the workpiece 3. As a result, compressive stress is applied to the surface of the workpiece 3.

[0061] The nozzle orifice 21 and the second plane 13b of the inlet of the nozzle orifice 21 are made of diamond sintered material. Therefore, the amount of wear when the processing fluid flows at high speed can be reduced.

[0062] The cover 59 can be attached to and removed from the nozzle tube 57. Therefore, it can be easily replaced when the cover 59 is worn out. Because the nozzle head 13 has high hardness, it is not easily worn out. In addition, because the support platform 15 is made of corrosion-resistant steel or high-tensile steel, it has excellent durability.

[0063] When abrasive particles are present in the treatment tank 51, the surface of the workpiece 3 is ground by these particles. Due to the high flow rate of the treatment water ejected from the nozzle 10, the abrasive particles are accelerated and collide with the surface of the workpiece 3. This promotes the grinding of the surface of the workpiece 3.

[0064] When the nozzle contains abrasive particles, wear on the nozzle 10 is accelerated. However, the nozzle orifice 21 and the first plane 13a at the outlet of the nozzle orifice 21 are made of diamond sintered material. Therefore, wear on the nozzle orifice 21 and the first plane 13a is suppressed.

[0065] This utility model is not limited to the above-described embodiments. Various modifications can be made without departing from the spirit of this utility model, and all technical matters included in the technical concept described in the claims are subject to this utility model. Although the embodiments shown are preferred examples, those skilled in the art can implement various alternatives, modifications, variations, or improvements based on the content disclosed in this specification, which are included within the technical scope described in the appended claims.

Claims

1. A nozzle (10) for cavitation surface treatment, characterized in that, The cavitation surface treatment nozzle (10) has a nozzle head (13). The nozzle head (13) has: The first plane (13a) ejects liquid and is perpendicular to the jet axis (1); The second plane (13b), which is perpendicular to the jet axis (1), is the opposite plane to the first plane (13a); and Nozzle orifice (21), the nozzle orifice (21) having: A semi-cylindrical discharge groove (23) is disposed on the first plane (13a) and extends in a first direction perpendicular to the spray axis (1); An ejection orifice (25) extends along the ejection axis (1) and connects to the discharge groove (23), and is a straight elliptical cylinder with an elliptical cross-section having a major axis extending in the first direction; and The inlet (27) has a straight conical surface (27a) with the jet axis (1) as the center axis and is connected to the jet hole (25).

2. The cavitation surface treatment nozzle (10) according to claim 1, wherein, The nozzle head (13) is cylindrical with the first plane (13a) and the second plane (13b) as its two end faces.

3. The cavitation surface treatment nozzle (10) according to claim 1 or 2, wherein, It also has a support platform (15), which is a straight cylindrical support platform (15) and has: The first bottom surface (15c) and the second plane (13b) are essentially the same plane; A nozzle head chamber (15a) is disposed on the first bottom surface (15c), and the nozzle head (13) is disposed thereon and abuts against the nozzle head (13). The second bottom surface (15b) is the opposite surface of the first bottom surface (15c); and The jet stream passes through a hole (15d), which extends from the second bottom surface (15b) along the jet axis (1) and connects to the nozzle head chamber (15a).

4. The cavitation surface treatment nozzle (10) according to claim 1 or 2, wherein, The nozzle head (13) has a Mohs hardness of 9 or higher.

5. The cavitation surface treatment nozzle (10) according to claim 3, wherein, The support platform (15) is made of corrosion-resistant alloy or high-tensile steel.

6. The cavitation surface treatment nozzle (10) according to claim 3, wherein, The support platform (15) and the nozzle head (13) are separate units.

7. The cavitation surface treatment nozzle (10) according to claim 3, wherein, The support platform (15) and the nozzle head (13) are integrated.

8. The cavitation surface treatment nozzle (10) according to claim 1 or 2, wherein, The discharge groove (23) has side surfaces (23a) at both ends that are planes.

9. The cavitation surface treatment nozzle (10) according to claim 3, wherein, The discharge channel (23) has an opening (23b). The cross-section of the jet stream through the orifice (15d) narrows as it moves toward the nozzle head chamber (15a). The opening (23b) is located inside the cross-section of the jet flow through hole (15d) in the connection with the nozzle head chamber (15a).

10. The cavitation surface treatment nozzle (10) according to claim 1 or 2, wherein, The diameter of the straight conical surface (27a) decreases as it moves toward the first plane (13a).

11. A cavitation surface treatment apparatus (50), the cavitation surface treatment apparatus (50) comprising: Processing tank (51), wherein the processing tank (51) stores the processing liquid; and A workbench (53) is disposed in the processing tank (51) and a workpiece (3) is provided thereon. Its features are, The cavitation surface treatment apparatus (50) further comprises: The cavitation surface treatment nozzle (10) according to any one of claims 1-4; and The nozzle tube (57) is capable of being installed with the cavitation surface treatment nozzle (10) and can move relative to the worktable (53) in the front-back direction, the up-down direction and the left-right direction.

12. The cavitation surface treatment apparatus (50) according to claim 11, wherein, The nozzle tube (57) has a nozzle chamber (57a) that abuts against the cavitation surface treatment nozzle (10) for insertion. The cavitation surface treatment apparatus (50) also has a nozzle cover (59) disposed at the front end of the nozzle tube (57) to secure the cavitation surface treatment nozzle (10) to the nozzle tube (57).

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