Inclined shaft type jet flow mechanism and supercharging device

Abstract

The utility model relates to the technical field of medical instruments, and particularly discloses an inclined shaft type jet flow mechanism which comprises a backflow pipe, a pressure pipe and a nozzle. A window is formed in the side wall of the near end of the return pipe; the pressure pipe comprises a linear section and a bent section, the bent section is connected to the near end of the linear section, the end, away from the linear section, of the bent section extends to the near end of the window, and the axial direction of the end, away from the linear section, of the bent section is parallel to the axial direction of the linear section; the nozzle is connected with the bent section, a spraying hole is formed in the nozzle, the spraying hole is configured to form a high-speed liquid jet flow when high-pressure liquid is sprayed out of the spraying hole, the axial direction of the spraying hole faces the inner side of the window, and an inclination angle theta is formed between the axial direction of the spraying hole and the axial direction of the linear section; and the inclination angle theta is more than 0 degree and less than or equal to 15 degrees. The utility model further discloses a supercharging device. Pollution caused by aerosol formed in the air environment due to the fact that part of sprayed fluid cannot enter the backflow pipe can be avoided, the manufacturing process requirement and cost of the nozzle are reduced, and meanwhile the impact stability of the edge of high-speed liquid flow is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, and it is a kind of oblique shaft type jet mechanism and pressure device. BACKGROUND

[0002] Medical jet flow structure is a kind of surgical instrument using liquid power, its function is to impact surgical site by high-speed jet liquid to clean and remove tissue.The existing jet flow structure design usually adopts the following mode:

[0003] One is to set jet flow and liquid channel on the same axis, and by this, due to the mixing of high-speed convergent flow formed by spray hole and its surrounding air under high pressure, gas-liquid mixed flow is formed, with the increase of jet distance, the linear diameter of jet flow is continuously increased and expanded, and the recovery port is limited within a certain area due to use condition requirement, when jet flow and liquid channel are on the same axis, part of jet flow cannot enter backflow channel and enters air environment, aerosol is formed in working area to form pollution;

[0004] For another design, such as application number US11432838B2 discloses "nozzle completely located inside the distal end of pressure chamber, wherein the nozzle is coaxial with the distal end of pressure chamber, and coaxial with pressurized liquid flow through nozzle during work" "nozzle is configured to emit pressurized liquid flow with a cone angle not exceeding 10 degrees". Its design has the following problems: the emission cone angle is formed by nozzle process, and due to the formation of high-speed liquid flow under high pressure, especially supersonic speed, the hole diameter of nozzle is often controlled below 0.5mm, and the profile of spray hole cavity is relatively complex, the condition of forming high-speed liquid flow is harsh, and the test method of small-angle cone angle below 10 degrees requires high, and the deviation is large, which leads to high manufacturing process requirement of nozzle, increases production cost, and poor economy.

[0005] At the same time, in the prior art, the medical pressurizing device matched with jet flow has a reversing cycle due to piston movement, the pressure formed by output water flow also forms periodic fluctuation, and the output efficiency of pressurizing device also determines the upper limit of pressure, and the existing on-off valve of pressurizing device uses steel ball as valve core, due to the problem of excessive mass of steel ball itself, the efficiency of pressurizing device is also low. INVENTION CONTENTS

[0006] The technical problem to be solved by the utility model is how to solve the problems of easy aerosol formation and pollution in working area and high production cost in the prior art.

[0007] In order to solve the above technical problems, the utility model provides a kind of oblique shaft type jet mechanism, with proximal end and distal end, comprising:

[0008] The proximal end side wall of the backflow pipe is provided with a window.

[0009] a pressure pipe comprising a straight section and a bent section, the bent section being connected to a proximal end of the straight section, the bent section extending to a proximal end of the window from a distal end of the straight section, an axial direction of the distal end of the bent section being parallel to an axial direction of the straight section; and

[0010] a nozzle provided at the distal end of the bent section, the nozzle being provided with a spray hole configured to form a high-speed liquid jet when high-pressure liquid is sprayed from the spray hole, an axial direction of the spray hole being directed towards an inner side of the window, and the axial direction of the spray hole forming an angle θ with the axial direction of the straight section;

[0011] wherein the angle θ satisfies: 0° < θ ≤ 15°.

[0012] Further preferably, the return pipe comprises a body portion and an elbow portion, the elbow portion being provided at a proximal end of the body portion, and the window being provided at a proximal end side wall of the body portion.

[0013] Further preferably, the straight section is connected to an inner wall of the body portion in a fit manner, and the bent section is connected to an inner wall of the elbow portion in a fit manner.

[0014] Further preferably, the angle θ satisfies: 3° ≤ θ ≤ 10°.

[0015] Further preferably, the high-speed liquid jet sprayed from the spray hole forms an outer contour line and an inner contour line on an inner side of the return pipe, wherein the outer contour line is parallel to the axial direction of the straight section.

[0016] Further preferably, the axial direction of the distal end of the bent section is parallel to the outer contour line.

[0017] Further preferably, a high-pressure passage is provided in the pressure pipe, the spray hole is in communication with the high-pressure passage, and a distal end of the pressure pipe is used to introduce high-pressure liquid into the high-pressure passage.

[0018] Further preferably, a return passage is provided in the return pipe, the window is in communication with the return passage, and the high-speed liquid jet is directed into the return passage through the spray hole.

[0019] To solve the above technical problems, the utility model also provides a kind of pressure increasing device, the oblique shaft type jet mechanism described above, further include:

[0020] a main housing, a distal end of the main housing is provided with piston cavity, and a proximal end of the main housing is respectively provided with first pipe slot and second pipe slot in communication with the piston cavity;

[0021] a piston assembly movably arranged in the piston cavity;

[0022] a liquid inlet connector, one end of which is arranged in the first pipe groove, and a liquid inlet disc movably sleeved on the end of the liquid inlet connector close to the piston cavity;

[0023] a liquid outlet connector, one end of which is arranged in the second pipe groove, and a liquid outlet disc movably sleeved on the end of the liquid outlet connector close to the piston cavity.

[0024] Further preferably, the first pipe groove is formed with a first abutting surface close to the piston cavity, and the second pipe groove is formed with a second abutting surface close to the piston cavity; when the piston cavity is in a negative pressure state, the end of the liquid inlet disc abuts against the first abutting surface, and the end of the liquid outlet disc abuts against the second abutting surface; when the piston cavity is in a pressure-increasing state, the end of the liquid inlet disc is separated from the first abutting surface and forms a gap, and the end of the liquid outlet disc is separated from the second abutting surface and forms a gap.

[0025] Further preferably, the liquid inlet disc is in a cylindrical structure with an opening at one end and a first main body part at the other end, the opening end of the liquid inlet disc is slidably fitted on the end of the liquid inlet connector, a plurality of first flow guide windows are formed on the circumferential wall of the liquid inlet disc, and the first main body part is recessed inward along the axial direction of the liquid inlet disc by a certain distance to form a groove in communication with the first flow guide windows, so that the end of the liquid inlet disc far from the opening forms an abutting part.

[0026] Further preferably, the liquid outlet disc is in a cylindrical structure with an opening at one end and a second main body part at the other end, the opening end of the liquid outlet disc is slidably fitted on the end of the liquid outlet connector, and the second main body part is arranged flush with the end of the liquid outlet disc, and a plurality of second flow guide windows are formed on the circumferential wall of the liquid outlet disc.

[0027] Further preferably, the total area of the plurality of first flow guide windows is not less than the flow area of the liquid inlet connector, and the total area of the plurality of second flow guide windows is not less than the flow area of the liquid outlet connector.

[0028] Further preferably, the axial length of the liquid outlet disc is greater than the axial movement distance of the liquid outlet disc, and the axial length of the liquid inlet disc is greater than the axial movement distance of the liquid inlet disc.

[0029] Further preferably, the axial movement distance of the liquid outlet disc and the liquid inlet disc is 0.01-100 mm, and the thickness of the liquid outlet disc and the liquid inlet disc is 0.01-100 mm.

[0030] Compared with the prior art, the oblique shaft type jet flow mechanism and the pressure boosting device have the beneficial effects that

[0031] The oblique shaft type jet flow mechanism has the advantages that the axial direction of the jet hole is towards the inner side of the window, the axial direction of the jet hole and the axial direction of the straight section form an inclination angle, the high-speed liquid jet is completely in the reflux pipe, and thus the part of the jet fluid cannot enter the reflux pipe and enter the air environment to form an aerosol to cause pollution; and the oblique shaft type jet flow mechanism only needs to use a simple profile nozzle to ensure the accuracy of the position and angle of the jet hole, and reduces the manufacturing process requirement and cost of the nozzle.

[0032] The pressure boosting device has the advantages of simple structure, low process requirement, and the like. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a structural schematic view of the oblique shaft type jet flow mechanism.

[0034] Figure 2 is a sectional view of the oblique shaft type jet flow mechanism.

[0035] Figure 3 is a structural view of the pressure boosting device.

[0036] Figure 4 is Figure 3 is a partial enlarged view.

[0037] Figure 5 is a structural view of the liquid inlet connector.

[0038] Figure 6 is a structural view of the liquid outlet disc.

[0039] in the figure:

[0040] 10, reflux pipe; 11, body part; 12, elbow part; 13, reflux passage;

[0041] 20, window;

[0042] 30, pressure pipe; 31, straight section; 32, bent section; 33, high-pressure passage;

[0043] 40, nozzle;

[0044] 50, high-speed liquid jet; 51, outer profile line; 52, inner profile line;

[0045] 100, main housing; 110, piston cavity; 120, first pipe groove; 130, second pipe groove; 140, first abutting surface; 150, second abutting surface;

[0046] 200, piston assembly; 210, push rod; 220, piston body;

[0047] 300, liquid inlet connector; 310, first sealing ring; 320, liquid inlet disc; 321, abutting portion; 322, first main body portion; 323, first flow guide window;

[0048] 400, liquid outlet connector; 410, second sealing ring; 420, liquid outlet disc; 421, second main body portion; 422, second flow guide window. DETAILED DESCRIPTION

[0049] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0050] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0051] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0052] Furthermore, unless otherwise expressly specified and limited, the terms "install," "connect," and "couple" are to be construed broadly and can be either direct or indirect, as appropriate, and can include fixed connections, detachable connections, or integral connections, as appropriate, and can be mechanical, electrical, or any combination thereof, as appropriate.

[0053] In the present application, unless otherwise expressly specified and limited, a first feature is "on" or "under" a second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "over", "above", and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in horizontal height than the second feature. The first feature is "under", "below", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in horizontal height than the second feature.

[0054] It is to be understood that when an element is referred to as being "on" or "set on" another element, it can be directly on the other element or an intervening element can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or an intervening element can also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0055] Embodiment 1

[0056] The embodiment provides a bevel tip jet mechanism, which has a proximal end and a distal end. It is to be noted that the proximal end refers to the end of the bevel tip jet mechanism for insertion into the tissue to be cut, and the distal end refers to the end of the bevel tip jet mechanism for passing high-pressure liquid or the end for the medical staff to hold.

[0057] In some embodiments, as shown in FIG. 1, the bevel tip jet mechanism includes a return pipe 10, a pressure pipe 30, and a nozzle 40. Figures 1-2

[0058] In a specific embodiment, the return pipe 10 includes a body portion 11 and an elbow portion 12, the elbow portion 12 is arranged at the proximal end of the body portion 11, so that the proximal end of the return pipe 10 forms a closed structure, a window 20 is arranged on the side wall of the proximal end of the body portion 11, the extension direction of the window 20 is parallel to the axial direction of the body portion 11; further, a return passage 13 is arranged in the return pipe 10, the window 20 is in communication with the return passage 13, and the pressure pipe 30 is arranged in the return passage 13. ​

[0059] In the specific embodiment, the pressure tube 30 is provided with a high-pressure passage 33, the distal end of the pressure tube 30 is used to introduce high-pressure liquid into the high-pressure passage 33, the pressure tube 30 comprises a straight section 31 and a bent section 32, the bent section 32 is connected to the proximal end of the straight section 31, the distal end of the bent section 32 extends to the proximal end of the window 20, the axial direction of the distal end of the bent section 32 is parallel to the axial direction of the straight section 31; further, the straight section 31 is connected to the inner wall of the body part 11, and the bent section 32 is connected to the inner wall of the elbow part 12.

[0060] In the specific embodiment, the nozzle 40 is arranged at the distal end of the bent section 32 away from the straight section 31, the nozzle 40 is provided with a spray hole, the spray hole is connected to the high-pressure passage 33, the spray hole is configured to form a high-speed liquid jet 50 when the high-pressure liquid is sprayed from the spray hole, the axial direction of the spray hole is directed towards the inner side of the window 20, and the axial direction of the spray hole forms an inclination angle θ with the axial direction of the straight section 31; wherein the inclination angle θ satisfies: 0° < θ ≤ 15°, so that the high-speed liquid jet 50 is directed into the backflow passage 13 through the spray hole; in this way, by designing the axial direction of the distal end of the bent section 32 away from the straight section 31 to be parallel to the axial direction of the straight section 31, i.e. the angle and position of the distal end of the bent section 32 away from the straight section 31 are fixed, the axial direction of the spray hole is directed towards the inner side of the window 20, and the axial direction of the spray hole forms an inclination angle θ with the axial direction of the straight section 31, the high-speed liquid jet with a launch cone angle is realized by inclining the axial direction of the nozzle 40 with respect to the axial direction of the straight section 31.

[0061] In addition, the axial direction of the spray hole is directed towards the inner side of the window 20, so that the high-speed liquid jet 50 is completely in the backflow tube 10, thereby avoiding that part of the sprayed liquid cannot enter the backflow tube 10 and enters the air environment to form aerosol and pollute the working area; and the present application only needs to use a simple profile nozzle 40 to ensure the accuracy of the position and angle of the spray hole, thereby reducing the manufacturing process requirements and cost of the nozzle.

[0062] In some embodiments, the inclination angle θ is preferably: 3° ≤ θ ≤ 10°.

[0063] In some embodiments, the high-speed liquid jet 50 sprayed through the spray hole forms an outer profile line 51 and an inner profile line 52 on the inner side of the backflow tube 10, wherein the outer profile line 51 is parallel to the axial direction of the straight section 31, and specifically, the axial direction of the distal end of the bent section 32 away from the straight section 31 is parallel to the outer profile line 51, thereby ensuring that the high-speed liquid jet 50 is always placed on the inner side of the pressure tube 30 under the action of the inclination angle θ, so as to avoid that part of the high-speed liquid jet 50 enters the air environment outside the pressure tube 30 through the window 20 to form aerosol and pollute the working area.

[0064] It can be seen that the oblique shaft type jet flow mechanism is provided, the axial direction of the bending section 32 away from one end of the straight section 31 is designed to be parallel to the axial direction of the straight section 31, that is, the angle and position of the bending section 32 away from one end of the straight section 31 are fixed, the axial direction of the jet hole is directed to the inner side of the window 20, and the axial direction of the jet hole forms an inclination angle θ with the axial direction of the straight section 31, the high-speed liquid flow with a launch cone angle is realized by the inclined positioning of the nozzle 40 and the axial direction of the straight section 31, in addition, the axial direction of the jet hole is directed to the inner side of the window 20, so that the high-speed liquid jet flow 50 is completely in the reflux pipe 10, thereby avoiding that part of the jet flow cannot enter the reflux pipe 10 and enters the air environment to form an aerosol and form pollution, and the nozzle 40 with a simple contour can ensure the accuracy of the position and angle of the jet hole, and the manufacturing process requirement and cost of the nozzle are reduced.

[0065] Embodiment 2

[0066] The embodiment 2 provides a supercharging device for the oblique shaft type jet flow mechanism described in the embodiment 1, which can improve the impact stability of the high-speed liquid flow edge (that is, the lower boundary of the high-speed liquid flow) and ensure the jet cutting effect.

[0067] As shown in the Figures 3-6 The supercharging device of the embodiment comprises a main shell 100, a piston assembly 200, a liquid inlet connector 300 and a liquid outlet connector 400.

[0068] In the specific embodiment, the main shell 100 has a proximal end and a distal end, the distal end of the main shell 100 is provided with a piston cavity 110, the piston assembly 200 comprises a push rod 210 and a piston body 220, the piston body 220 is movably arranged in the piston cavity 110, the push rod 210 is detachably connected with the piston body 220, when the push rod 210 drives the piston body 220 to move along the piston cavity 110 from the distal end to the proximal end, the piston cavity 110 is in a supercharged state, at this time, the liquid inlet connector 300 is closed, the liquid outlet connector 400 is opened, and the liquid in the piston cavity 110 flows out through the liquid outlet connector 400; conversely, when the push rod 210 drives the piston body 220 to move along the piston cavity 110 from the proximal end to the distal end, the piston cavity 110 is in a negative pressure state, at this time, the liquid inlet connector 300 is opened, the liquid outlet connector 400 is closed, and the external liquid enters the piston cavity 110 through the liquid inlet connector 300.

[0069] Exemplarily, the proximal end of the main shell 100 is respectively provided with a first pipe groove 120 and a second pipe groove 130 which are in communication with the piston cavity 110, one end of the liquid inlet connector 300 is installed in the first pipe groove 120 through a first sealing ring 310, one end of the liquid outlet connector 400 is installed in the second pipe groove 130 through a second sealing ring 410, and the liquid inlet connector 300 and the liquid outlet connector 400 are respectively in communication with the piston cavity 110.

[0070] In some embodiments, to achieve the opening and closing of the liquid inlet joint 300 and the liquid outlet joint 400, and to achieve precise guidance, a liquid inlet disc 320 is arranged at one end of the liquid inlet joint 300, specifically, the liquid inlet disc 320 is movably sleeved at one end of the liquid inlet joint 300 close to the piston cavity 110, and the liquid inlet disc 320 is configured to open when the piston cavity 110 is under negative pressure and close when the pressure is increased. A liquid outlet disc 420 is arranged at one end of the liquid outlet joint 400, specifically, the liquid outlet disc 420 is movably sleeved at one end of the liquid outlet joint 400 close to the piston cavity 110, and the liquid outlet disc 420 is configured to close when the piston cavity 110 is under negative pressure and open when the pressure is increased, so as to solve the problem of eccentricity of the disc under the action of gravity and unbalanced force in the prior art.

[0071] In the above embodiment, the first pipe groove 120 is formed with a first abutting surface 140 at one end close to the piston cavity 110, and the second pipe groove is formed with a second abutting surface 150 at one end close to the piston cavity 110. When the piston cavity 110 is under negative pressure, the end of the liquid inlet disc 320 abuts against the first abutting surface 140, and the end of the liquid outlet disc 420 abuts against the second abutting surface 150. Conversely, when the piston cavity 110 is under increased pressure, the end of the liquid inlet disc 320 is separated from the first abutting surface 140 and forms a gap, and the end of the liquid outlet disc 420 is separated from the second abutting surface 150 and forms a gap.

[0072] For example, the liquid inlet disc 320 has a cylindrical structure with an opening at one end and a first main body 322 at the other end. The opening end of the liquid inlet disc 320 is sleeved at the end of the liquid inlet joint 300. A plurality of first flow guide windows 323 are formed on the circumferential wall of the liquid inlet disc 320. The first main body 322 is recessed inward along the axial direction of the liquid inlet disc 320 by a certain distance to form a groove in communication with the first flow guide windows 323, so that the end of the liquid inlet disc 320 away from the opening forms an abutting portion 321. When the piston cavity 110 is under negative pressure, the liquid inlet disc 320 moves in the direction of the piston cavity 110 under the action of negative pressure until the abutting portion 321 abuts against the first abutting surface 140. Since the first main body 322 is recessed inward along the axial direction of the liquid inlet disc 320 by a certain distance, the liquid in the liquid inlet joint 300 can pass through the opening of the liquid inlet disc 320, enter the groove from the first flow guide windows 323, and then flow to the piston cavity 110, thereby realizing liquid inlet. Conversely, when the piston cavity 110 is under increased pressure, the liquid inlet disc 320 moves away from the piston cavity 110 under the action of increased pressure, so that the first main body 322 blocks the liquid inlet joint 300, and the liquid cannot flow out of the liquid inlet joint 300 in this process.

[0073] Exemplarily, the liquid outlet disc 420 is a cylindrical structure with an opening at one end and a second main body 421 at the other end. The opening end of the liquid outlet disc 420 is sleeved on the end of the liquid outlet connector 400, and the second main body 421 is arranged flush with the end of the liquid outlet disc 420. A plurality of second flow guide windows 422 are arranged on the circumferential wall of the liquid outlet disc 420. When the liquid outlet disc 420 moves away from the piston cavity 110, a liquid guiding gap exists between the second main body 421 and the liquid outlet connector 400. Thus, when the piston cavity 110 is in a negative pressure state, the liquid outlet disc 420 moves towards the piston cavity 110 under the action of negative pressure until the second main body 421 abuts against the second abutting surface 150, thereby blocking the passage between the piston cavity 110 and the liquid outlet connector 400. That is, when the piston cavity 110 is in a negative pressure state, the liquid inlet connector 300 is in communication with the piston cavity 110, and the liquid outlet connector 400 is not in communication with the piston cavity 110. Conversely, when the piston cavity 110 is in a pressurized state, the liquid outlet disc 420 moves away from the piston cavity 110 under the action of pressurization. Since the liquid guiding gap exists between the second main body 421 and the liquid outlet connector 400, the liquid in the piston cavity 110 can enter the liquid outlet connector 400 through the second flow guide window 422. That is, when the piston cavity 110 is in a pressurized state, the liquid inlet connector 300 is not in communication with the piston cavity 110, and the liquid outlet connector 400 is in communication with the piston cavity 110, thereby realizing the process of liquid inlet, pressurization and liquid outlet.

[0074] In this way, the liquid inlet disc 320 interacts with the first abutting surface 140, and the liquid outlet disc 420 interacts with the second abutting surface 150, so that the liquid inlet disc 320 and the liquid outlet disc 420 can realize precise guidance, solving the problem of eccentricity and unbalanced stress of the disc under the action of gravity. Moreover, the liquid inlet disc 320 and the liquid outlet disc 420 of the present application have simple structure and low processing difficulty, can realize mold processing, and have low manufacturing cost.

[0075] In some embodiments, the axial length of the liquid outlet disc 420 is greater than the axial movement distance of the liquid outlet disc 420, and the axial length of the liquid inlet disc 320 is greater than the axial movement distance of the liquid inlet disc 320.

[0076] In some embodiments, the axial movement distance of the liquid outlet disc 420 and the liquid inlet disc 320 is 0.01-100 mm, so as to avoid the liquid outlet disc 420 from being separated from the liquid outlet connector 400 and the liquid inlet disc 320 from being separated from the liquid inlet connector 300 when sliding along the axial direction, and to ensure the opening and closing characteristics of the pressurizing device.

[0077] In other embodiments, the thickness of the liquid outlet disc 420 and the liquid inlet disc 320 is designed to be 0.01-100 mm.

[0078] Further preferably, the total area of the plurality of first flow guide windows 323 is not less than the flow area of the liquid inlet joint 300, and the total area of the plurality of second flow guide windows 422 is not less than the flow area of the liquid outlet joint 400, so as to reduce the speed fluctuation of the jet flow, and further improve the impact stability of the high-speed liquid flow edge (i.e. the lower boundary of the high-speed liquid flow) in combination with the inclined shaft type jet flow mechanism.

[0079] It can be seen that the disc structure of the embodiment is precisely guided by sliding fit, which is beneficial to reduce the mass of the moving part, improve the sensitivity of the valve core to pressure response, and increase the stress surface of the disc, thereby improving the opening and closing characteristics of the supercharging device, so as to reduce the speed fluctuation of the jet flow, further improve the impact stability of the high-speed liquid flow edge (i.e. the lower boundary of the high-speed liquid flow) in combination with the inclined shaft type jet flow mechanism, improve the supercharging efficiency, and ensure the jet cutting effect. The supercharging device has the advantages of simple structure and low process requirement.

[0080] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and substitutions can be made, and these improvements and substitutions should also be considered as the protection scope of the present application. The above shows and describes the basic principles, main features and advantages of the present application, and for those skilled in the art, it is obvious that the present application is not limited to the details of the above preferred embodiments, the embodiments should be considered as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the present application.

[0081] In addition, it should be understood that although the present application is described in the form of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in the embodiments can also be properly combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A helical jet mechanism having a proximal end and a distal end, characterized by, The application relates to a pressure pipe and a backflow pipe. The backflow pipe comprises a window on the proximal side wall; The pressure pipe comprises a straight section and a bent section, the bent section is connected to the proximal end of the straight section, the distal end of the bent section extends to the proximal end of the window, the axial direction of the distal end of the bent section is parallel to the axial direction of the straight section; And A nozzle is arranged at the distal end of the bent section, the nozzle is provided with a spray hole, the spray hole is configured to form a high-speed liquid jet when high-pressure liquid is sprayed from the spray hole, the axial direction of the spray hole is towards the inner side of the window, and the axial direction of the spray hole forms an angle theta with the axial direction of the straight section; Wherein, the angle theta satisfies: 0 < theta <= 15 degrees.

2. A helical jet mechanism according to claim 1, wherein The backflow pipe comprises a body part and an elbow part, the elbow part is arranged at the proximal end of the body part, and the window is arranged on the proximal side wall of the body part.

3. A helical jet mechanism according to claim 2, wherein The straight section is connected with the inner wall of the body part, and the bent section is connected with the inner wall of the elbow part.

4. A tangential flow mechanism according to claim 1, wherein The angle theta is: 3 <= theta <= 10 degrees.

5. A helical jet mechanism according to claim 1, wherein The high-speed liquid jet sprayed through the spray hole forms an outer contour line and an inner contour line on the inner side of the backflow pipe, wherein the outer contour line is parallel to the axial direction of the straight section.

6. A helical jet mechanism according to claim 5, wherein The axial direction of the distal end of the bent section is parallel to the outer contour line.

7. A tangential flow mechanism according to claim 1, wherein The pressure pipe is provided with a high-pressure passage, the spray hole is communicated with the high-pressure passage, and the distal end of the pressure pipe is used for introducing high-pressure liquid into the high-pressure passage.

8. A tangential flow mechanism according to claim 1, wherein The backflow pipe is provided with a backflow passage, the window is communicated with the backflow passage, and the high-speed liquid jet is sprayed into the backflow passage through the spray hole.

9. A supercharging device comprising the oblique-axis jet mechanism according to any one of claims 1 to 8, characterized by Further comprising: A main shell, the distal end of the main shell is provided with a piston cavity, the proximal end of the main shell is respectively provided with a first pipe slot and a second pipe slot communicated with the piston cavity; A piston assembly movably arranged in the piston cavity; A liquid inlet connector, one end of the liquid inlet connector is mounted in the first pipe slot, and a liquid inlet disc is movably sleeved on the end of the liquid inlet connector close to the piston cavity; A liquid outlet connector, one end of the liquid outlet connector is mounted in the second pipe slot, the other end of the liquid outlet connector is used for being connected with the pressure pipe, and a liquid outlet disc is movably sleeved on the end of the liquid outlet connector close to the piston cavity.

10. A supercharging device according to claim 9, characterized in that The first pipe slot is formed with a first abutting surface at the end close to the piston cavity, and the second pipe slot is formed with a second abutting surface at the end close to the piston cavity; when the piston cavity is in a negative pressure state, the end of the liquid inlet disc abuts against the first abutting surface, and the end of the liquid outlet disc abuts against the second abutting surface; when the piston cavity is in a pressure increasing state, the end of the liquid inlet disc is separated from the first abutting surface and forms a gap, and the end of the liquid outlet disc is separated from the second abutting surface and forms a gap.

11. A supercharging device according to claim 10, characterized in that The liquid inlet disc is a cylindrical structure with an opening at one end and a first main body part at the other end, the opening end of the liquid inlet disc is slidingly fitted to the end of the liquid inlet connector, a plurality of first flow guide windows are formed on the circumferential wall of the liquid inlet disc, the first main body part is sunk inward along the axial direction of the liquid inlet disc by a certain distance to form a groove in communication with the first flow guide windows, so that the end of the liquid inlet disc away from the opening forms an abutting part.

12. A supercharging device according to claim 11, characterized in that The liquid outlet disc is a cylindrical structure with an opening at one end and a second main body part at the other end, the opening end of the liquid outlet disc is slidingly fitted to the end of the liquid outlet connector, the second main body part is flush with the end of the liquid outlet disc, and a plurality of second flow guide windows are formed on the circumferential wall of the liquid outlet disc.

13. A supercharging device according to claim 12, characterized in that The total area of the plurality of first flow guide windows is not less than the flow area of the liquid inlet connector, and the total area of the plurality of second flow guide windows is not less than the flow area of the liquid outlet connector.

14. A supercharging device according to claim 10, characterized in that The axial length of the liquid outlet disc is greater than the axial movement distance of the liquid outlet disc, and the axial length of the liquid inlet disc is greater than the axial movement distance of the liquid inlet disc.

15. A supercharging device according to claim 14, characterized in that The axial movement distance of the liquid outlet disc and the liquid inlet disc is 0.01-100mm, and the thickness of the liquid outlet disc and the liquid inlet disc is 0.01-100mm.

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