Cavitation jet nozzle and design method thereof

Abstract

The invention discloses a cavitation jet nozzle and a design method thereof, and relates to the technical field of cavitation jet nozzles. The problem of stepless regulation is solved. The nozzle specifically comprises a nozzle body and an inner cylinder fixed to the inner wall of the nozzle body, a T-shaped pipe is welded to the inner wall of the inner cylinder, through micro holes are formed in the inner wall of the transverse part of the T-shaped pipe, an air inlet pipe is fixed to the top of the nozzle body and communicated with the T-shaped pipe, an opening valve is arranged at the top of the air inlet pipe, and the opening valve is communicated with the T-shaped pipe. An opening control mechanism used for controlling the opening of the opening valve is arranged on one side of the opening valve, the opening valve comprises a valve shell, a ball and a valve rod, and the valve shell is fixed to the top of the air inlet pipe. The opening degree valve is arranged, the opening degree control mechanism is used for driving the valve rod so as to change the overlapping area of the channel and the valve shell flow channel, the overlapping area of the channel and the valve shell flow channel is changed to be continuous, and therefore the air inflow has the characteristic of stepless adjustment relative to water pressure adjustment.

Description

Technical Field

[0001] The invention relates to the technical field of cavitation jet nozzles, and in particular to a cavitation jet nozzle and a design method thereof. Background Art

[0002] Cavitation refers to the formation of bubbles due to the local pressure of the liquid being lower than the saturated vapor pressure of the liquid, i.e., explosively growing gas nuclei. Cavitation will produce high temperature, high pressure and micro jets at the moment of collapse, accompanied by complex physical, chemical and electrochemical reactions. In the prior art, the cavitation nozzle made by this principle has the advantages of high efficiency and easy use in cleaning.

[0003] After searching, the Chinese patent publication number CN113210151A discloses a universal cavitation jet nozzle, which is mainly composed of a nozzle body, a sleeve, an air needle, an air guide element, and a bubble generator. The end with a larger cross-sectional area of ​​the nozzle is the water inlet, and the other end is the water outlet. The sleeve fits tightly with the inner wall of the nozzle, the right end face of the sleeve is in close contact with the left end face of the outer ring of the air guide element, and the right end face of the outer ring is in contact with the boss on the nozzle body. The nozzle body has three equally divided step holes, and the air needle is connected to the nozzle body through threads and communicates with the inside of the air guide element.

[0004] The above patent has the following shortcomings: it uses multiple control valves to control the opening, thereby controlling the air intake under different water pressures. On the one hand, this method is inconvenient to use, and on the other hand, it cannot achieve stepless matching of the air intake and the water pressure.

[0005] To this end, the present invention proposes a cavitation jet nozzle and a design method thereof. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a cavitation jet nozzle and a design method thereof.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A cavitation jet nozzle comprises a nozzle body and an inner cylinder fixed to the inner wall of the nozzle body.

[0009] A "T"-shaped tube is welded to the inner wall of the inner tube, and a through micro-hole is opened on the inner wall of the transverse part of the "T"-shaped tube. An air intake pipe is fixed to the top of the nozzle body, and the air intake pipe is connected to the "T"-shaped tube. An opening valve is arranged on the top of the air intake pipe, and an opening control mechanism for controlling the opening of the opening valve is arranged on one side of the opening valve.

[0010] The opening valve includes a valve housing, a ball and a valve stem. The valve housing is fixed to the top of the air inlet pipe. The ball is rotatably connected to the inner wall of the valve housing through the valve stem. A channel is opened on the inner wall of the ball. The valve stem is in transmission cooperation with the opening control mechanism.

[0011] Preferably: the opening control mechanism includes a cylinder body and a slider 2 slidably connected to the inner wall of the cylinder body, the cylinder body is welded to the top outer wall of the valve housing, the slider 2 is slidably connected to the inner wall of the cylinder body, and the outer wall of the valve stem is provided with a spiral groove, the inner wall of the slider 2 is fixed with a limit rod, and the limit rod and the spiral groove are movably limited.

[0012] Furthermore, a piston is slidably connected to the inner wall of the cylinder body, and an outer wall on one side of the piston is connected to the top outer wall of the second slider through a connecting ring.

[0013] On the basis of the above scheme: the inner wall of the cylinder body is slidably connected with a slider 1, one side outer wall of the slider 1 is buckled with a spring 1, and the other end of the spring 1 is buckled with the outer wall of the slider 2.

[0014] A better solution among the above solutions is that: the end of the cylinder body located at the piston is connected to a connecting pipe, the other end of the connecting pipe is fixed to the outer wall of the nozzle body and the connecting pipe is connected to the inside of the nozzle body.

[0015] As a further solution of the present invention: a shell is welded to the side wall of the cylinder body, an adjusting block is slidably connected to the inner wall of the shell, one side of the adjusting block is rotatably connected to a connecting rod, and the other end of the connecting rod is rotatably connected to the side wall of the slider.

[0016] At the same time, the inner wall of the shell is connected with an adjusting bolt through a thread, the end of the adjusting bolt is rotatably connected to the inner wall of the adjusting block, and the outer wall of the adjusting bolt is connected with a locking nut through a thread.

[0017] As a preferred embodiment of the present invention: a fixed plate and a fixed ring are fixed to the inner wall of the connecting tube, a movable plate is slidably connected to the inner wall of the connecting tube located between the fixed plate and the fixed ring, a spring 2 is buckled on the side wall of the movable plate, and the other end of the spring 2 is buckled to the inner wall of the fixed ring.

[0018] At the same time, the inner wall of the fixed plate is provided with a second through hole, and the inner wall of the movable plate is provided with a first through hole.

[0019] As a more preferred solution of the present invention: the through hole 1 and the through hole 2 are staggered with each other.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention sets an opening valve and utilizes an opening control mechanism to drive the valve stem, thereby changing the overlapping area between the channel and the valve housing flow channel, and the overlapping area between the channel and the valve housing flow channel is changed continuously, so that the regulation of the intake volume relative to the water pressure has the characteristic of stepless regulation.

[0022] 2. The present invention, by setting a connecting pipe, utilizes the water pressure in the nozzle body to drive the piston, so that on the one hand, no manual or other power source drive is required, which increases the convenience of use; on the other hand, the position of the piston directly matches the water pressure, so that the air intake volume and the water pressure are adaptively matched.

[0023] 3. The present invention, by providing components such as adjusting bolts, adjusting blocks, and connecting rods, can utilize the adjusting bolts to adjust the position of the slider 1, thereby changing the initial compression of the spring 1, thereby changing the air intake under a fixed water pressure, thereby enabling targeted manual adjustment of the air intake according to actual needs, and providing an anti-loosening nut that can lock the adjusting bolt and the housing, thereby playing an anti-loosening role and increasing the stability of the use state.

[0024] 4. The present invention, by providing components such as a fixed plate and a movable plate, at the moment of starting, the connecting pipe is subjected to water pressure. At this time, the movable plate will move due to the impact of the water pressure, and during the movement, the water pressure can be buffered, thereby effectively preventing the piston and related components from being damaged due to impact and increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a cavitation jet nozzle proposed by the present invention;

[0026] Figure 2 A schematic diagram of the opening valve structure of a cavitation jet nozzle proposed by the present invention;

[0027] Figure 3 A schematic diagram of the structure of an opening control mechanism of a cavitation jet nozzle proposed by the present invention;

[0028] Figure 4 It is a schematic cross-sectional structure diagram of a housing, a locking nut, an adjusting bolt, an adjusting block, and a connecting rod of a cavitation jet nozzle proposed by the present invention;

[0029] Figure 5 A schematic diagram of the connecting pipe structure of a cavitation jet nozzle proposed by the present invention;

[0030] Figure 6 This is a schematic diagram of the cross-sectional structure of a connecting pipe of a cavitation jet nozzle proposed by the present invention;

[0031] Figure 7 This is a schematic diagram of the separation structure of the fixed plate and the movable plate of a cavitation jet nozzle proposed by the present invention.

[0032] In the figure: 1. nozzle body; 2. inner tube; 3. "T"-shaped tube; 4. micropore; 5. intake pipe; 6. opening valve; 7. opening control mechanism; 8. valve housing; 9. sphere; 10. channel; 11. valve stem; 12. connecting ring; 13. piston; 14. cylinder body; 15. spiral groove; 16. slider 1; 17. spring 1; 18. limit rod; 19. slider 2; 20. housing; 21. anti-loosening nut; 22. adjusting bolt; 23. adjusting block; 24. connecting rod; 25. connecting pipe; 26. fixed plate; 27. movable plate; 28. spring 2; 29. ​​fixing ring; 30. through hole 1; 31. through hole 2. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] Embodiment 1:

[0036] A cavitation jet nozzle, such as Figure 1-Figure 7 As shown, it includes a nozzle body 1 and an inner tube 2 fixed to the inner wall of the nozzle body 1, a "T"-shaped tube 3 is welded to the inner wall of the inner tube 2, and a through microhole 4 is opened on the inner wall of the transverse part of the "T"-shaped tube 3, an intake pipe 5 is fixed to the top of the nozzle body 1, the intake pipe 5 is connected to the "T"-shaped tube 3, and an opening valve 6 is arranged on the top of the intake pipe 5, and an opening control mechanism 7 for controlling the opening of the opening valve 6 is arranged on one side of the opening valve 6.

[0037] The opening valve 6 includes a valve housing 8, a ball 9 and a valve stem 11. The valve housing 8 is fixed to the top of the intake pipe 5. The ball 9 is rotatably connected to the inner wall of the valve housing 8 through the valve stem 11. A channel 10 is opened on the inner wall of the ball 9. The valve stem 11 cooperates with the opening control mechanism 7 in transmission.

[0038] When the device is in use, according to the water pressure in the nozzle body 1, the valve stem 11 can be driven to rotate through the opening control mechanism 7, thereby driving the ball 9 to rotate. When the ball 9 rotates, the overlapping area between the channel 10 and the flow channel of the valve housing 8 will change, thereby changing the opening of the entire opening valve 6 to achieve the adjustment of the air intake amount.

[0039] The device, by setting an opening valve 6 and utilizing an opening control mechanism 7 to drive a valve stem 11, changes the overlapping area between a channel 10 and a flow passage of a valve housing 8, and the overlapping area between the channel 10 and the flow passage of the valve housing 8 is changed continuously, thereby making the regulation of the air intake amount relative to the water pressure have the characteristic of stepless regulation.

[0040] To solve the driver problem; Figure 3 As shown, the opening control mechanism 7 includes a cylinder body 14 and a slider 19 slidably connected to the inner wall of the cylinder body 14, the cylinder body 14 is welded to the top outer wall of the valve housing 8, the slider 19 is slidably connected to the inner wall of the cylinder body 14, and the outer wall of the valve stem 11 is provided with a spiral groove 15, the inner wall of the slider 19 is fixed with a limiting rod 18, and the limiting rod 18 is movably limited in cooperation with the spiral groove 15.

[0041] The inner wall of the cylinder body 14 is also slidably connected with a piston 13 , and one side outer wall of the piston 13 is connected to the top outer wall of the slider 2 19 through a connecting ring 12 .

[0042] The inner wall of the cylinder body 14 is slidably connected with a slider 16 , one side outer wall of the slider 16 is buckled with a spring 17 , and the other end of the spring 17 is buckled with the outer wall of the slider 2 19 .

[0043] When the opening needs to be adjusted, fluid pressure is applied to the end of the cylinder 14. After the piston 13 is subjected to the fluid pressure, the pressure is transmitted to the slider 19 through the connecting ring 12, so that the slider 19 overcomes the elastic force of the spring 17 and moves, thereby utilizing the cooperation of the spiral groove 15 and the limit rod 18 to rotate the valve stem 11.

[0044] In order to solve the adaptive adjustment problem, such as Figure 5 As shown, the end of the cylinder 14 located at the piston 13 is connected to a connecting pipe 25 , the other end of the connecting pipe 25 is fixed to the outer wall of the nozzle body 1 and the connecting pipe 25 is connected to the inside of the nozzle body 1 .

[0045] When water pressure appears in the nozzle body 1 , the water pressure will enter the cylinder body 14 through the connecting pipe 25 , thereby applying pressure to the piston 13 .

[0046] The device, by providing a connecting pipe 25, utilizes the water pressure in the nozzle body 1 to drive the piston 13, thereby, on the one hand, eliminating the need for manual or other power source drive, thereby increasing ease of use, and on the other hand, the position of the piston 13 directly matches the water pressure, thereby enabling the air intake volume to be adaptively matched to the water pressure.

[0047] To solve the regulation problem; Figure 4As shown, the side wall of the cylinder body 14 is welded with a shell 20, the inner wall of the shell 20 is slidably connected with an adjustment block 23, one side of the adjustment block 23 is rotatably connected with a connecting rod 24, and the other end of the connecting rod 24 is rotatably connected to the side wall of the slider 16.

[0048] The inner wall of the housing 20 is connected to an adjusting bolt 22 via threads, the end of the adjusting bolt 22 is rotatably connected to the inner wall of the adjusting block 23, and the outer wall of the adjusting bolt 22 is connected to a locking nut 21 via threads.

[0049] When the adjusting bolt 22 rotates, it can drive the adjusting block 23 to move, thereby driving the slider 16 to move relative to the cylinder body 14 through the connecting rod 24. When the slider 16 moves, the initial compression amount of the spring 17 can be changed, thereby changing the air intake amount under a fixed water pressure.

[0050] The device, by providing components such as an adjusting bolt 22, an adjusting block 23, and a connecting rod 24, can utilize the adjusting bolt 22 to adjust the position of a slider 16, thereby changing the initial compression of a spring 17, thereby changing the air intake under a fixed water pressure, and thus being able to perform targeted manual adjustments to the air intake according to actual needs, and providing an anti-loosening nut 21, which can lock the adjusting bolt 22 and the housing 20, thereby playing an anti-loosening role and increasing the stability of the use state.

[0051] To solve the impact problem; Figure 6 As shown, a fixing plate 26 and a fixing ring 29 are fixed to the inner wall of the connecting tube 25, and a movable plate 27 is slidably connected to the inner wall of the connecting tube 25 located between the fixing plate 26 and the fixing ring 29, and a spring 28 is buckled to the side wall of the movable plate 27, and the other end of the spring 28 is buckled to the inner wall of the fixing ring 29.

[0052] The inner wall of the fixed plate 26 is provided with a second through hole 31 , and the inner wall of the movable plate 27 is provided with a first through hole 30 , and the first through hole 30 and the second through hole 31 are interlaced with each other.

[0053] Since water pressure is instantly established in the nozzle body 1 at the moment of starting, the piston 13 will be subjected to a large impact force due to the water pressure shock. When the device is started repeatedly, the piston 13 and its related components will be damaged due to the impact. Based on this, when the device is in use, when it is in the closed state, the movable plate 27 is subjected to the elastic force of the spring 28, so that the fixed plate 26 and the movable plate 27 are fitted together. At this time, the connecting pipe 25 is in an open circuit state. At the moment of starting, the connecting pipe 25 is subjected to water pressure. At this time, the movable plate 27 will move due to the water pressure shock, and in the process of moving, the water pressure can be buffered.

[0054] The device is provided with components such as a fixed plate 26 and a movable plate 27. At the moment of starting, the connecting pipe 25 is subjected to water pressure. At this time, the movable plate 27 will move due to the impact of the water pressure, and during the movement, the water pressure can be buffered, thereby effectively preventing the piston 13 and related components from being damaged due to impact and increasing the service life.

[0055] When the present embodiment is in use, according to the water pressure in the nozzle body 1, the valve stem 11 can be driven to rotate through the opening control mechanism 7, thereby driving the ball 9 to rotate. When the ball 9 rotates, the overlapping area between the channel 10 and the flow channel of the valve housing 8 will change, thereby changing the opening of the entire opening valve 6 to adjust the air intake volume. When water pressure appears in the nozzle body 1, the water pressure will enter the cylinder body 14 through the connecting pipe 25, thereby applying pressure to the piston 13 and applying fluid pressure to the end of the cylinder body 14. After the piston 13 is subjected to the fluid pressure, the pressure is transmitted to the slider 19 through the connecting ring 12, so that the slider 19 overcomes the elastic force of the spring 17 and moves, thereby utilizing the cooperation of the spiral groove 15 and the limit rod 18 to rotate the valve stem 11. When the adjusting bolt 22 rotates, it can drive the adjusting block 2 3 moves, thereby driving the slider 16 to move relative to the cylinder body 14 through the connecting rod 24. When the slider 16 moves, the initial compression amount of the spring 17 can be changed, thereby changing the air intake amount under the fixed water pressure. Since water pressure is instantly established in the nozzle body 1 at the moment of starting, the piston 13 is subjected to a large impact force by the water pressure shock. When the piston 13 and its related parts are started repeatedly, the impact will damage the piston 13. Based on this, when the device is in use, when it is in the closed state, the movable plate 27 is subjected to the elastic force of the spring 28, so that the fixed plate 26 and the movable plate 27 are fitted. At this time, the connecting pipe 25 is in a disconnected state. At the moment of starting, the connecting pipe 25 is subjected to water pressure. At this time, the movable plate 27 will move due to the water pressure shock, and in the process of moving, the water pressure can be buffered.

[0056] Embodiment 2:

[0057] A method for designing a cavitation jet nozzle is used to design a cavitation jet nozzle of Example 1.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cavitation jet nozzle, comprising a nozzle body (1) and an inner cylinder (2) fixed to the inner wall of the nozzle body (1), characterized in that: A "T"-shaped tube (3) is welded to the inner wall of the inner tube (2), and a through micro-hole (4) is provided on the inner wall of the transverse part of the "T"-shaped tube (3). An air intake pipe (5) is fixed to the top of the nozzle body (1), and the air intake pipe (5) is connected to the "T"-shaped tube (3). An opening valve (6) is provided at the top of the air intake pipe (5), and an opening control mechanism (7) for controlling the opening of the opening valve (6) is provided on one side of the opening valve (6); The opening valve (6) comprises a valve housing (8), a ball (9) and a valve stem (11); the valve housing (8) is fixed to the top of the air intake pipe (5); the ball (9) is rotatably connected to the inner wall of the valve housing (8) through the valve stem (11); a channel (10) is provided on the inner wall of the ball (9); and the valve stem (11) is in transmission cooperation with the opening control mechanism (7).

2. A cavitation jet nozzle according to claim 1, characterized in that: The opening control mechanism (7) comprises a cylinder body (14) and a second slider (19) slidably connected to the inner wall of the cylinder body (14); the cylinder body (14) is welded to the top outer wall of the valve housing (8); the second slider (19) is slidably connected to the inner wall of the cylinder body (14); a spiral groove (15) is provided on the outer wall of the valve stem (11); a limiting rod (18) is fixed to the inner wall of the second slider (19); the limiting rod (18) and the spiral groove (15) are movably limited in cooperation.

3. A cavitation jet nozzle according to claim 2, characterized in that: The inner wall of the cylinder body (14) is also slidably connected to a piston (13), and one side outer wall of the piston (13) is connected to the top outer wall of the second slider (19) through a connecting ring (12).

4. A cavitation jet nozzle according to claim 3, characterized in that: The inner wall of the cylinder body (14) is slidably connected to a slider (16), one side outer wall of the slider (16) is buckled with a spring (17), and the other end of the spring (17) is buckled to the outer wall of the slider (19).

5. A cavitation jet nozzle according to claim 4, characterized in that: The end of the cylinder (14) located at the piston (13) is connected to a connecting pipe (25), the other end of the connecting pipe (25) is fixed to the outer wall of the nozzle body (1), and the connecting pipe (25) is connected to the inside of the nozzle body (1).

6. A cavitation jet nozzle according to claim 2, characterized in that: A shell (20) is welded to the side wall of the cylinder body (14); an adjusting block (23) is slidably connected to the inner wall of the shell (20); one side of the adjusting block (23) is rotatably connected to a connecting rod (24); the other end of the connecting rod (24) is rotatably connected to the side wall of the slider (16).

7. A cavitation jet nozzle according to claim 6, characterized in that: The inner wall of the housing (20) is connected to an adjusting bolt (22) via a thread, the end of the adjusting bolt (22) is rotatably connected to the inner wall of the adjusting block (23), and the outer wall of the adjusting bolt (22) is connected to a locking nut (21) via a thread.

8. The cavitation jet nozzle according to claim 5, characterized in that: A fixing plate (26) and a fixing ring (29) are fixed to the inner wall of the connecting pipe (25); a movable plate (27) is slidably connected to the inner wall of the connecting pipe (25) between the fixing plate (26) and the fixing ring (29); a second spring (28) is buckled to the side wall of the movable plate (27); and the other end of the second spring (28) is buckled to the inner wall of the fixing ring (29).

9. A cavitation jet nozzle according to claim 8, characterized in that: The inner wall of the fixed plate (26) is provided with a second through hole (31), and the inner wall of the movable plate (27) is provided with a first through hole (30).

10. The cavitation jet nozzle according to claim 9, characterized in that: The through hole one (30) and the through hole two (31) are interlaced with each other.

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