Leakage-proof connector device of water jet cutter

Abstract

The utility model discloses a leakproof joint device of a water jet cutter. The leakproof joint device comprises a connecting base, a connector and a lining pipe, a through first channel is formed in the connector, the connector and the connecting base are axially connected together, and a filter screen is arranged between the connector and the connecting base; the lining pipe is inserted into the connecting base, a pipe cavity of the lining pipe is communicated with the first channel, and the communicated part of the pipe cavity and the first channel passes through the filter screen. According to the utility model, the problem of blockage of the water jet cutter pipeline can be avoided, and leakage can be avoided when the water jet cutter pipeline bears higher water pressure.

Description

Technical Field

[0001] The utility model relates to a water jet leak-proof joint device, belonging to the technical field of medical equipment. Background Art

[0002] Currently, medical water jets are medical devices that use a pump to pressurize incoming water into a high-pressure stream, which is then ejected to perform debridement on human tissue. Chinese Patent Publication No. 201210264413.1 discloses a water jet head integrated with a wireless endoscope. While a filter and sealing ring are installed between the high-pressure water jet channel and the high-pressure quick-connect connector, providing a certain degree of sealing, there is still a certain risk of leakage when subjected to high pressure. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a water jet leak-proof joint device, which can not only avoid the problem of water jet pipeline blockage, but also prevent leakage when the water jet pipeline is subjected to a large water pressure.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a water jet leak-proof joint device, comprising:

[0005] Connect the base;

[0006] A connector, wherein a first through passage is provided in the connector, the connector is axially connected to a connection base, and a filter is provided between the connector and the connection base;

[0007] An inner lining tube is inserted into the connecting base, a tube cavity of the inner lining tube is connected to the first channel, and a connecting portion between the tube cavity and the first channel passes through the filter screen.

[0008] Furthermore, one end of the connecting base is an axially connected end, and the end of the connecting head opposite to the axially connected end is an axially mating connected end, and the axially connected end and the axially mating connected end are connected together.

[0009] Furthermore, in order to limit the connection base and the connection head, a radial limiting mechanism is provided between the axially connected end portion and the axially mating connected end portion for limiting the radial relative position of the connection base and the connection head.

[0010] Furthermore, the radial limiting mechanism includes a positioning block and a positioning groove, the positioning block is arranged on one of the axial connecting end and the axial matching connecting end, and the positioning groove is arranged on the other one of the axial connecting end and the axial matching connecting end.

[0011] Furthermore, in order to reduce the resistance effect and ensure that the fluid pressure is not damaged, the axially mating connecting end is provided with a bell mouth which is connected to the first channel and is larger on the outside and smaller on the inside.

[0012] Furthermore, in order to prevent the inner lining tube from interfering with the filter screen, a perforation is provided on the connecting base, and the inner lining tube is fitted and sealed in the perforation. The connecting base is provided with an avoidance groove connected to the perforation at the axially connected end, and the end of the inner lining tube is retracted into the avoidance groove to avoid the filter screen.

[0013] Furthermore, in order to improve the pressure resistance and the sealing effect, the water jet leak-proof joint device also includes a high-pressure pipe, which is connected to the connecting base, and a cavity is provided in the high-pressure pipe, the lining pipe is inserted into the cavity, and the tube cavity is connected to the cavity.

[0014] Furthermore, the outer diameter of the inner liner is larger than the diameter of the cavity portion where the inner liner is inserted;

[0015] And / or a convex edge is provided on the outer wall of the inner liner tube.

[0016] Furthermore, a tight-fitting cavity is provided on the connecting base, and the outer wall of the high-pressure pipe is tight-fitting on the inner wall of the tight-fitting cavity. Through the cooperation between the tight-fitting cavity and the outer wall of the high-pressure pipe, the connecting base, the high-pressure pipe and the inner liner pipe are tightly fixed together.

[0017] Furthermore, riveting teeth are provided on the inner wall of the tight-fitting cavity, and the connecting base, the high-pressure pipe and the liner pipe are tightly fixed together by riveting the inner wall of the tight-fitting cavity and the high-pressure pipe.

[0018] After adopting the above technical solution, the utility model has the following beneficial effects:

[0019] 1. The utility model adds a filter screen in the channel, which filters the corresponding large particles of the fluid, effectively solving the problem of water jet pipeline blockage; in addition, the design adds an inner liner tube, which is sealed with the connecting base through the inner liner tube, and the connecting base, high-pressure pipe, and inner liner tube are tightly riveted together, which can effectively solve the leakage problem. After testing, it can withstand a water pressure of 200MPa without leakage, and is safe, reliable, and has strong sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional diagram of the water jet leak-proof joint device of the utility model;

[0021] Figure 2 A structural cross-sectional view of the water jet leak-proof joint device of the utility model;

[0022] Figure 3 This is a structural cross-sectional view of the connector of the present invention;

[0023] Figure 4 This is a structural sectional view of the connecting base of the utility model;

[0024] Figure 5 This is a structural cross-sectional view of the inner liner pipe of the present invention;

[0025] Figure 6 This is a structural cross-sectional view of the high-pressure pipe of the utility model. DETAILED DESCRIPTION

[0026] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0027] like Figures 1 to 6 As shown, a water jet leak-proof joint device includes:

[0028] Connect base 1;

[0029] A connector 2 is provided with a first through passage 22 therein, the connector 2 is axially connected to the connection base 1, and a filter screen 4 is provided between the connector 2 and the connection base 1;

[0030] The inner lining tube 3 is inserted into the connecting base 1 , the lumen of the inner lining tube 3 is connected to the first channel 22 , and the communicating portion between the lumen and the first channel 22 passes through the filter screen 4 .

[0031] By providing the filter 4, large particles of the corresponding fluid can be filtered, effectively solving the problem of water jet pipeline blockage.

[0032] In this embodiment, the filter screen 4 is selected to have a mesh size capable of filtering particles with an outer diameter of 0.1 mm, ensuring that the entire channel pipeline is not blocked.

[0033] Specifically, if Figure 2 、 3 As shown in , 4 , one end of the connecting base 1 is the axial connecting end 11, and the end of the connecting head 2 opposite to the axial connecting end 11 is the axial matching connecting end 21, and the axial connecting end 11 and the axial matching connecting end 21 are connected together.

[0034] Specifically, if Figure 2 As shown, the filter screen 4 is pressed between the axially abutting end portion 11 and the axially matching abutting end portion 21 .

[0035] In this embodiment, the axially connected end portion 11 and the axially matched connected end portion 21 are specifically welded together, and a welding groove may be opened on the outer ring of the portion where the two are connected, and the two are welded through the welding groove.

[0036] Specifically, if Figures 2-4 As shown, in order to limit the connection base 1 and the connection head 2, a radial limiting mechanism is provided between the axial connection end 11 and the axial matching connection end 21 to limit the radial relative position of the connection base 1 and the connection head 2.

[0037] Specifically, if Figures 2-4 As shown, the radial limiting mechanism can specifically be the following structure, including a positioning block 12 and a positioning groove 23, the positioning block 12 is arranged on the axially connected end 11, and the positioning groove 23 is arranged on the axially mating connected end 21; of course, in some embodiments, the positioning block 12 can also be arranged on the axially mating connected end 21, and the positioning groove 23 is arranged on the axially connected end 11.

[0038] In this embodiment, the positioning block 12 may be a convex ring, and the positioning groove 23 may be a convex ring groove.

[0039] Specifically, if Figure 3 As shown, to reduce resistance and ensure fluid pressure is not compromised, the axially mating end 21 is provided with a bell mouth 24 that is larger on the outside and smaller on the inside, communicating with the first channel 22. When high-pressure water passes through the filter 4 and enters the connector 2, the bell mouth 24 reduces resistance and ensures fluid pressure is not compromised.

[0040] Specifically, if Figure 4 As shown, in order to prevent the inner liner tube 3 from interfering with the filter screen 4, a perforation is provided on the connecting base 1, and the inner liner tube 3 is fitted and sealed in the perforation. The connecting base 1 is provided with an avoidance groove 13 connected to the perforation at the axial connecting end 11, and the end of the inner liner tube 3 is retracted into the avoidance groove 13 to avoid the filter screen 4.

[0041] In this embodiment, the inner liner pipe 3 is specifically welded in the through hole.

[0042] Specifically, in order to improve the pressure resistance and improve the sealing effect, such as Figure 2 As shown, the water jet leak-proof joint device also includes a high-pressure pipe 5, which is connected to the connecting base 1, and a cavity 51 is provided in the high-pressure pipe 5, the lining pipe 3 is inserted into the cavity 51, and the tube cavity is connected to the cavity 51.

[0043] Specifically, the outer diameter D3 of the inner liner tube 3 is larger than the diameter D5 of the cavity 51 where the inner liner tube 3 is inserted; ensure that the fluid does not leak from the cavity 51 where the inner liner tube 3 and the high-pressure tube 5 cooperate; Figure 5 As shown, a convex edge 31 is provided on the outer wall of the inner liner tube 3, and the convex edge 31 ensures a tighter fit with the cavity 51 of the high-pressure tube 5, and there will be no leakage at the fitting point between the inner liner tube 3 and the cavity 51 of the high-pressure tube 5.

[0044] Specifically, if Figure 2As shown, a tight-fitting cavity 14 is provided on the connecting base 1, and the outer wall of the high-pressure pipe 5 is tightly fitted on the inner wall of the tight-fitting cavity 14. Through the cooperation between the tight-fitting cavity 14 and the outer wall of the high-pressure pipe 5, the connecting base 1, the high-pressure pipe 5, and the inner lining pipe 3 are tightly fixed together.

[0045] Specifically, if Figure 2 、 4 As shown, riveting teeth 14a are provided on the inner wall of the tight-fitting cavity 14. The riveting teeth 14a can tightly rivet the connecting base 1, the high-pressure pipe 5, and the inner lining pipe 3 together to prevent them from falling off under the action of high pressure.

[0046] Specifically, if Figure 6 As shown, the high-pressure pipe 5 is a braided pipe, which is provided with an inner pipe 52, a braided layer 53 and a rubber coating layer 54 in sequence from the inside to the outside in radial direction. The high-pressure pipe 5 with this structure greatly increases the pressure resistance of the pipe.

[0047] The assembly method of the water jet leak-proof joint device of this embodiment is as follows:

[0048] 1. Insert the inner liner tube 3 into the cavity 51 of the connection base 1. Ensure that the end of the inner liner tube 3 is 1 mm away from the filter receiving surface of the connection base 1 and weld it to ensure that there are no leaks.

[0049] 2. Place the filter screen 4 into the filter receiving surface of the connecting base 1, mate the connector 2 with the connecting base 1, press the filter screen 4 tightly, and weld the connector 2 and the connecting base 1 to fix them;

[0050] 3. Insert the high-pressure pipe 5 into the inner lining pipe 3 and fix it by riveting with a riveting machine.

[0051] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water jet leak-proof joint device, characterized in that: include: Connect the base (1); A connecting head (2), wherein a first through passage (22) is provided in the connecting head (2), the connecting head (2) and the connecting base (1) are axially connected together, and a filter screen (4) is provided between the connecting head (2) and the connecting base (1); An inner lining tube (3), the inner lining tube (3) is inserted into the connecting base (1), the tube cavity of the inner lining tube (3) is connected to the first channel (22), and the communicating portion between the tube cavity and the first channel (22) passes through the filter screen (4).

2. The water jet leak-proof joint device according to claim 1, characterized in that: One end of the connection base (1) is an axially connected end (11), and an end of the connector (2) opposite to the axially connected end (11) is an axially mating connected end (21), and the axially connected end (11) and the axially mating connected end (21) are connected together.

3. The water jet leak-proof joint device according to claim 2, characterized in that: A radial limiting mechanism for limiting the radial relative position of the connecting base (1) and the connecting head (2) is provided between the axial connecting end (11) and the axial matching connecting end (21).

4. The water jet leak-proof joint device according to claim 3, characterized in that: The radial limiting mechanism comprises a positioning block (12) and a positioning groove (23), wherein the positioning block (12) is arranged on one of the axially connected end portion (11) and the axially matched connected end portion (21), and the positioning groove (23) is arranged on the other of the axially connected end portion (11) and the axially matched connected end portion (21).

5. The water jet leak-proof joint device according to claim 2, characterized in that: The axially fitting connecting end portion (21) is provided with a bell mouth (24) which is connected to the first channel (22) and is larger on the outside and smaller on the inside.

6. The water jet leak-proof joint device according to claim 2, characterized in that: The connection base (1) is provided with a through hole, and the inner lining tube (3) is fitted and sealed in the through hole. The connection base (1) is provided with an avoidance groove (13) connected to the through hole at the axially connected end (11), and the end of the inner lining tube (3) is retracted into the avoidance groove (13) to avoid the filter screen (4).

7. The water jet leak-proof joint device according to claim 1, characterized in that: It also includes a high-pressure pipe (5), the high-pressure pipe (5) is connected to the connecting base (1), and a cavity (51) is provided in the high-pressure pipe (5), the lining pipe (3) is inserted into the cavity (51), and the tube cavity is communicated with the cavity (51).

8. The water jet leak-proof joint device according to claim 7, characterized in that: The outer diameter of the inner lining tube (3) is larger than the diameter of the portion of the cavity (51) that is connected to the inner lining tube (3); And / or a convex edge (31) is provided on the outer wall of the inner lining tube (3).

9. The water jet leak-proof joint device according to claim 7, characterized in that: The connection base (1) is provided with a tight-fitting cavity (14), and the outer wall of the high-pressure pipe (5) is tightly fitted on the inner wall of the tight-fitting cavity (14). Through the cooperation between the tight-fitting cavity (14) and the outer wall of the high-pressure pipe (5), the connection base (1), the high-pressure pipe (5), and the inner lining pipe (3) are tightly fixed together.

10. The water jet leak-proof joint device according to claim 9, characterized in that: The inner wall of the tight-fitting cavity (14) is provided with riveting teeth (14a), and the connection base (1), the high-pressure pipe (5), and the lining pipe (3) are tightly fixed together by riveting the inner wall of the tight-fitting cavity (14) and the high-pressure pipe (5).

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