Blowout-preventing and sticking-preventing straw head

Abstract

The utility model relates to the field of suction tubes, in particular to a blowout-prevention and sticking-prevention suction tube head which comprises a connecting tube and a control tube arranged on the connecting tube, one end of the connecting tube is provided with a water inlet, and the other end of the connecting tube is communicated with the control tube. The control pipe comprises a connecting part communicated with the connecting pipe, a meshing part arranged on the connecting part and a control part arranged at the end, away from the connecting part, of the meshing part, a valve is arranged on the meshing part, the pipe wall thickness of the meshing part is smaller than that of the connecting part, and the pipe wall thickness of the meshing part is smaller than that of the control part. The suction tube has the advantages that the tube wall is easy to occlude and deform, and the possibility of excessive occlusion of the suction tube is reduced.

Description

Technical Field

[0001] The present application relates to the field of straws, and in particular to a spray-proof and stick-proof straw tip. Background Art

[0002] A straw is used to absorb liquid in a container. A straw with a valve is currently available, and the user bites the straw to open the valve to suck the liquid. However, the existing straw is hollow, and it is difficult for the user to control the bite force. If the bite force is small, it is difficult to open the valve. If the bite force is too large, it is easy to cause the straw wall to stick, so that the inner cavity of the straw is closed and the liquid in the container cannot be sucked. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the present application provides a spray-proof and stick-proof straw tip.

[0004] The present application provides an anti-spray and anti-sticking pipette tip, which adopts the following technical solution:

[0005] A spray-proof and stick-proof pipette head comprises a connecting pipe and a control pipe arranged on the connecting pipe, a water inlet is provided at one end of the connecting pipe, and the other end of the connecting pipe is connected to the control pipe, the control pipe comprises a connecting part connected to the connecting pipe, a bite part arranged on the connecting part, and a control part arranged at one end of the bite part away from the connecting part, a valve is provided on the bite part, the tube wall thickness of the bite part is thinner than that of the connecting part, and the tube wall thickness of the bite part is thinner than that of the control part.

[0006] By adopting the above technical solution, the tube wall of the biting part is thinner than the tube wall of the connecting part, and the tube wall of the biting part is thinner than the tube wall of the control part, which is convenient for the user to bite the control tube and drive the valve to open. At the same time, the tube wall of the connecting part and the tube wall of the control part are thicker than the tube wall of the biting part, and the two ends of the biting part are pulled to effectively prevent the tube wall of the biting part from being over-bite.

[0007] Preferably, the valve includes a control plate 1 and a control plate 2 arranged on the inner wall of the bite portion, and a side of the control plate 1 close to the control plate 2 is tightly attached to the control plate 2 to form a gap 1, and the control plate 1 and the control plate 2 are arranged relatively inclined, and the distance between the control plate 1 and the control plate 2 gradually decreases near the water inlet.

[0008] By adopting the above technical solution, control piece 1 and control piece 2 are deformed according to the state of the bite portion, so that the user can control the opening and closing of gap 1. Control piece 1 and control piece 2 are arranged relatively inclined to prevent liquid from overflowing from the straw when it is not in use.

[0009] Preferably, the valve comprises a control piece three and a control piece four arranged on the inner wall of the bite portion, a side of the control piece three close to the control piece four is tightly attached to the control piece four to form a gap two, and the control piece three and the control piece four are arranged on four sides.

[0010] By adopting the above technical solution, the control piece three and the control piece four are controlled to deform by the bite bite portion, thereby controlling the opening and closing of the gap two.

[0011] Preferably, the valve comprises a control piece five and a control piece six which are arranged on the tube wall of the occlusal portion and recessed into the occlusal portion, and a side of the control piece five close to the control piece six is ​​in close contact with the control piece six to form a gap three.

[0012] By adopting the above technical solution, the control piece five and the control piece six are deformed according to the state of the bite portion, which makes it easier for the user to control the opening and closing of the gap three.

[0013] The present application provides an anti-spray and anti-sticking pipette tip, which adopts the following technical solution:

[0014] A spray-proof and stick-proof pipette head comprises a connecting pipe and a control pipe arranged on the connecting pipe, a water inlet is formed at one end of the connecting pipe, and the other end of the connecting pipe is connected to the control pipe, the control pipe comprises a connecting part connected to the connecting pipe, a bite part arranged on the connecting part, and a control part arranged on an end of the bite part away from the connecting part, a valve is provided on the bite part, the tube wall thickness of the bite part is thinner than that of the connecting part, and the tube wall thickness of the bite part is thinner than that of the control part; the bite part is provided with a sticking part, and the sticking part is used to prevent the inner walls of the bite part from sticking and closing each other.

[0015] By adopting the above technical solution, the tube wall of the biting part is thinner than the tube wall of the connecting part, and the tube wall of the biting part is thinner than the tube wall of the control part, which is convenient for the user to bite the control tube and drive the valve to open. At the same time, the tube wall of the connecting part and the tube wall of the control part are thicker than the tube wall of the biting part, so the two ends of the biting part are pulled to prevent the user from continuing to bite. The fitting part is used to prevent the inner walls of the biting part from fitting together and closing each other, leaving a channel for liquid flow inside the tube body.

[0016] Preferably, the valve includes a control plate 1 and a control plate 2 arranged on the inner wall of the bite portion, and a side of the control plate 1 close to the control plate 2 is tightly attached to the control plate 2 to form a gap 1, and the control plate 1 and the control plate 2 are arranged relatively inclined, and the distance between the control plate 1 and the control plate 2 gradually decreases near the water inlet.

[0017] Preferably, the valve comprises a control piece three and a control piece four arranged on the inner wall of the bite portion, a side of the control piece three close to the control piece four is tightly attached to the control piece four to form a gap two, and the control piece three and the control piece four are arranged on four sides.

[0018] Preferably, the valve comprises a control plate five and a control plate six which are arranged on the tube wall of the bite portion and recessed into the bite portion, a side of the control plate five close to the control plate six is ​​tightly attached to the control plate six to form a gap three, and the control portion is sealed away from one end of the valve.

[0019] Preferably, the fitting portion comprises a fitting block arranged on the tube wall of the occlusal portion.

[0020] By adopting the above technical solution, when the user bites the biting part, the fitting block is used to prevent excessive fitting of the inner wall of the tube body.

[0021] To sum up, the tube wall of the bite part is thinner than that of the connecting part and the control part, and is more easily deformed by biting, thereby driving the valve to open, making it easier for the user to suck the liquid in the container; when the user continues to bite the bite part, the deformation of the tube wall of the bite part will continue to increase and extend to the position of the connecting part and the control part. Since the tube walls of the connecting part and the control part are thicker than the bite part, the tube walls of the connecting part and the control part are not easy to deform, thereby exerting a tightening effect on the tube wall of the bite part. At this time, the bite force is significantly increased and supports the bite, reminding the user not to continue biting and to ensure that a channel for liquid circulation is left in the tube body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the first embodiment. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the structure of the first embodiment. Figure 2 ;

[0024] Figure 3 This is a schematic diagram of the structure of the first embodiment. Figure 3 ;

[0025] Figure 4 This is a schematic diagram of the structure of the first embodiment. Figure 4 ;

[0026] Figure 5 is a structural diagram of Embodiment 2;

[0027] Figure 6 is a schematic diagram of the structure of Embodiment 3;

[0028] Figure 7 This is a schematic diagram of the structure of the fourth embodiment. Figure 1 ;

[0029] Figure 8 This is a schematic diagram of the structure of the fourth embodiment. Figure 2 ;

[0030] Fig. 9 is a structural diagram of Embodiment 5;

[0031] Fig.10 is a structural diagram of Embodiment 6;

[0032] Fig.11 This is a schematic diagram of the structure of the seventh embodiment. Figure 1 ;

[0033] Fig.12 This is a schematic diagram of the structure of the seventh embodiment. Figure 2 ;

[0034] Fig.13 is a structural diagram of Embodiment 8;

[0035] Fig.14 It is a structural diagram of embodiment 9.

[0036] Explanation of the accompanying drawings: 1. connecting pipe; 2. control pipe; 21. connecting part; 22. bite part; 23. control part; 3. water inlet; 4. valve; 41. control piece one; 42. control piece two; 43. control piece three; 44. control piece four; 45. control piece five; 46. control piece six; 5. gap one; 6. gap two; 7. gap three; 8. fitting part; 81. fitting block; 9. water flow trough. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-Figure 14 This application is described in further detail.

[0038] Embodiment 1:

[0039] The present application embodiment discloses a spray-proof and stick-proof straw tip. Figure 1 and Figure 2 , including a connecting pipe 1 and a control pipe 2 installed at one end of the connecting pipe 1, a water inlet 3 is provided at one end of the connecting pipe 1, and the other end of the connecting pipe 1 is connected to the control pipe 2, and water flows in from the water inlet 3 and moves toward the control pipe 2. In the embodiment of the present application, the connecting pipe 1 and the control pipe 2 are integrally formed to improve the connection strength between the connecting pipe 1 and the control pipe 2. The control pipe 2 includes a connecting portion 21 connected to the connecting pipe 1, a bite portion 22 installed at one end of the connecting portion 21 away from the connecting pipe 1, and a control portion 23 installed at one end of the bite portion 22 away from the connecting portion 21, and an integrally formed valve 4 is provided on the bite portion 22, and the valve 4 is used to control the flow of liquid in the control pipe 2.

[0040] Reference Figure 1 and Figure 2The tube wall thickness of the bite portion 22 is thinner than that of the connecting portion 21, and the tube wall thickness of the bite portion 22 is thinner than that of the control portion 23. When the user bites the bite portion 22, the bite portion 22 with a thinner tube wall is more likely to deform, thereby opening the valve 4. In the embodiment of the present application, the control portion 23, the bite portion 22 and the connecting portion 21 are integrally formed to improve the connection stability of the control portion 23, the bite portion 22 and the connecting portion 21, and improve the strength of the control tube 2. The inner wall of the connecting portion 21 is provided with a water flow groove 9 along the length direction of the control tube 2 to prevent water accumulation in the tube.

[0041] Reference Figure 2 , Figure 3 and Figure 4 The engaging portion 22 can be configured to be recessed inwardly or protruded outwardly or flush with the tube wall.

[0042] Reference Figure 2 The side wall of the bite portion 22 is recessed inwardly to facilitate the user to confirm the bite range.

[0043] Reference Figure 3 The side wall of the bite portion 22 is protruded outwardly, which can effectively extend the deformation range of the bite portion 22 and also facilitate the user to confirm the bite range.

[0044] Reference Figure 4 The side wall of the bite portion 22 is flush with the tube wall, and the outer side wall of the bite portion 22 is flush with the outer side walls of the control portion 23 and the connecting portion 21, ensuring the smoothness of the outer side wall of the tube body.

[0045] Reference Figure 2 The valve 4 includes a control piece 1 41 and a control piece 2 42 fixedly mounted on the inner wall of the bite part 22. The control piece 1 41 is arranged along the inner wall of the bite part 22, and the control piece 2 42 is arranged along the inner wall of the bite part 22. The control piece 1 41 and the control piece 2 42 seal the water outlet of the bite part 22. The side of the control piece 1 41 close to the control piece 2 42 is closely attached to the control piece 2 42 to form a gap 1 5. When the user bites the bite part 22, the control piece 1 41 and the control piece 2 42 are deformed to control the gap 1 5 to open. In the specific implementation process, the control piece 1 41 and the control piece 2 42 are integrally formed with the tube body, and the gap 1 5 can be horizontally opened in a straight line, vertically opened, or inclined, and the gap 1 5 can also be a cross shape or other special shapes.

[0046] Reference Figure 2The control piece 1 41 and the control piece 2 42 are arranged to be inclined relative to each other, and the distance between the control piece 1 41 and the control piece 2 42 gradually decreases near the water inlet 3. When the straw is in the container, the liquid is moved into the straw by pressure due to air pressure difference or when the container is tipped over, and the moving liquid contacts the control piece 1 41 and the control piece 2 42, making the contact ends of the control piece 1 41 and the control piece 2 42 more closely fitted, effectively preventing the liquid from leaking out of the straw when it is not in use.

[0047] The implementation principle of the anti-spray and anti-sticking straw tip of the embodiment of the present application is as follows: the present application sets the thick-thin-thick sections of the tube wall on the connecting part 21, the biting part 22 and the control part 23, and the valve 4 is arranged at the biting part 22, that is, the thin tube wall, so that the user can bite the straw tip to control the opening and closing of the valve 4. The thinner tube wall is easier to bite and deform, driving the valve 4 to open, so that the user can suck the liquid in the container. At the same time, when the user wants to continue to bite the straw, the deformation of the tube wall will continue to increase outward and extend to the connecting part 21 and the control part 23. The thicker tube wall is not easy to deform, and forms a tight pulling effect on the tube wall that is concave inward at the biting part 22. At this time, a larger bite force is required and the bite is supported, reminding the user not to continue biting, and ensuring that there is a channel for liquid circulation in the inner cavity of the tube wall.

[0048] Embodiment 2:

[0049] The difference between the embodiment of the present application and the embodiment 1 is that, Figure 5 The valve 4 includes a control piece 3 43 and a control piece 4 44 provided on the inner wall of the bite portion 22. The control piece 3 43 is close to the control piece 4 44 on one side thereof and is closely attached to the control piece 4 44 to form a gap 2 6. In the embodiment of the present application, the control piece 3 43 and the control piece 4 44 are arranged in a face-to-face manner. In the specific implementation process, the control piece 3 43 and the control piece 4 44 are integrally formed, and the gap 2 6 can be horizontally opened in a straight line, vertically opened, or obliquely opened. The gap 2 6 can also be a cross shape or other special shapes.

[0050] Embodiment three:

[0051] The difference between the embodiment of the present application and the embodiment 1 is that, Figure 6 The valve 4 includes a control piece 5 45 and a control piece 6 46 which are arranged on the tube wall of the bite part 22 and are recessed toward the inside of the bite part 22. The side of the control piece 5 45 close to the control piece 6 46 is tightly attached to the control piece 6 46 to form a gap 3 7. In the embodiment of the present application, the end of the control part 23 away from the bite part 22 is sealed. In the embodiment of the present application, the bite part 22 is symmetrically provided with two groups of valves 4, and the number of valves 4 can be set according to the actual required liquid flow. In the specific implementation process, the control piece 5 45 and the control piece 6 46 are integrally formed, and the gap 3 7 can be opened horizontally, vertically, or obliquely in a straight line shape, and the gap 3 7 can also be a cross shape or other special shapes.

[0052] Embodiment 4:

[0053] The present application embodiment discloses a spray-proof and stick-proof straw tip. Figure 7 and Figure 8 , comprising a connecting pipe 1 and a control pipe 2 arranged at one end of the connecting pipe 1, wherein one end of the connecting pipe 1 is connected to the control pipe 2, and a water inlet 3 is provided at the other end of the connecting pipe 1, and liquid enters from the water inlet 3 and flows toward the control pipe 2. The control pipe 2 comprises a connecting portion 21 fixedly connected to the connecting pipe 1, a bite portion 22 arranged at one end of the connecting portion 21 away from the connecting pipe 1, and a control portion 23 arranged at one end of the bite portion 22 away from the connecting portion 21, and a valve 4 is provided on the bite portion 22. A fitting portion 8 is provided on the bite portion 22, and the fitting portion 8 is used to prevent the inner walls of the bite portion 22 from fitting and sealing each other.

[0054] Reference Figure 7 and Figure 8 In the embodiment of the present application, the control tube 2 and the connecting tube 1 are integrally formed to improve the connection stability and connection strength of the control tube 2 and the connecting tube 1. In the embodiment of the present application, the connecting portion 21, the bite portion 22 and the control portion 23 are integrally formed, the tube wall thickness of the bite portion 22 is thinner than the tube wall thickness of the connecting portion 21, and the tube wall thickness of the bite portion 22 is thinner than the tube wall thickness of the control portion 23. The tube wall thicknesses of the connecting portion 21, the bite portion 22 and the control portion 23 are arranged in thick, thin and thick sections, and the bite portion 22 is convenient for the user to bite and control the valve 4 to open. The inner wall of the connecting portion 21 is provided with a water flow groove 9 along the length direction of the control tube 2 to prevent water accumulation in the tube.

[0055] Reference Figure 7 and Figure 8 The valve 4 includes a control piece 1 41 and a control piece 2 42 arranged on the inner wall of the bite part 22. The control piece 1 41 is arranged along the inner wall of the bite part 22, and the control piece 2 42 is arranged along the inner wall of the bite part 22. The control piece 1 41 and the control piece 2 42 seal the water outlet of the bite part 22. The side of the control piece 1 41 close to the control piece 2 42 is closely attached to the control piece 2 42 to form a gap 1 5. The valve 4 is integrally formed with the pipe body. When the user bites the bite part 22, the control piece 1 41 and the control piece 2 42 are deformed to control the gap 1 5 to open. In the specific implementation process, the control piece 1 41 and the control piece 2 42 are integrally formed, and the gap 1 5 can be horizontally opened in a straight line, vertically opened, or inclinedly opened. The gap 1 5 can also be a cross shape or other special shapes.

[0056] Reference Figure 7 and Figure 8The control piece 1 41 and the control piece 2 42 are arranged relatively tilted, and the distance between the control piece 1 41 and the control piece 2 42 gradually decreases near the water inlet 3. When the straw is inserted into the container, the liquid is moved into the straw by pressure due to the air pressure difference or when the container is tipped over. The moving liquid contacts the control piece 1 41 and the control piece 2 42, making the contact ends of the control piece 1 41 and the control piece 2 42 more closely fitted, effectively preventing the liquid from leaking out of the straw when it is not in use.

[0057] Reference Figure 2 , Figure 3 and Figure 4 The engaging portion 22 can be configured to be recessed inwardly or protruded outwardly or flush with the tube wall.

[0058] Reference Figure 8 The fitting portion 8 includes a fitting block 81 arranged on the tube wall of the biting portion 22. The fitting block 81 is used to prevent the user from over-biting the biting portion 22. The fitting blocks 81 of the present application are symmetrically arranged on the outer side wall of the biting portion 22. The number of the fitting blocks 81 can be one or more as needed. The fitting portion 8 is integrally formed with the tube body.

[0059] Embodiment five:

[0060] The difference between the present embodiment and the fourth embodiment is that, Fig. 9 The valve 4 includes a control piece 3 43 and a control piece 4 44 provided on the inner wall of the bite portion 22. The control piece 3 43 is close to the control piece 4 44 on one side thereof and is closely attached to the control piece 4 44 to form a gap 2 6. In the embodiment of the present application, the control piece 3 43 and the control piece 4 44 are arranged in a face-to-face manner. In the specific implementation process, the control piece 3 43 and the control piece 4 44 are integrally formed, and the gap 2 6 can be horizontally opened in a straight line, vertically opened, or obliquely opened. The gap 2 6 can also be a cross shape or other special shapes.

[0061] Embodiment six:

[0062] The difference between the present embodiment and the fourth embodiment is that, Fig.10 The valve 4 includes a control piece 5 45 and a control piece 6 46 which are arranged on the tube wall of the bite part 22 and are recessed toward the inside of the bite part 22. The side of the control piece 5 45 close to the control piece 6 46 is closely attached to the control piece 6 46 to form a gap 3 7. In the embodiment of the present application, the end of the control part 23 away from the bite part 22 is sealed, and the bite part 22 is symmetrically provided with two groups of valves 4. The number of valves 4 can be one or more according to the actual required liquid flow. In the specific implementation process, the control piece 5 45 and the control piece 6 46 are integrally formed, and the gap 3 7 can be opened horizontally, vertically, or obliquely in a straight line shape, and the gap 3 7 can also be a cross shape or other special shapes.

[0063] Reference Fig.10In the present application, the fitting portion 8 is arranged to avoid the valve 4, thereby reducing the possibility that the fitting portion 8 affects the opening and closing of the valve 4.

[0064] Embodiment seven:

[0065] The difference between the present embodiment and the fourth embodiment is that, Fig.11 and Fig.12 The bonding block 81 is in a handle shape or a C shape, one end of the bonding block 81 is installed at the connection between the connecting part 21 and the bite part 22, and the other end of the bonding block 81 is installed at the connection between the bite part 22 and the control part 23.

[0066] Embodiment eight:

[0067] The difference between the present embodiment and the fifth embodiment is that, Fig.13 The bonding block 81 is in a handle shape or a C shape, one end of the bonding block 81 is installed at the connection between the connecting part 21 and the bite part 22, and the other end of the bonding block 81 is installed at the connection between the bite part 22 and the control part 23.

[0068] Embodiment nine:

[0069] The difference between the embodiment of the present application and the embodiment 6 is that, referring to Fig.14 The fitting block 81 is in a handle shape or a C shape, which is convenient for avoiding the valve 4. One end of the fitting block 81 is installed at the connection between the connecting part 21 and the bite part 22, and the other end of the fitting block 81 is installed at the connection between the bite part 22 and the control part 23.

[0070] It should be noted that, in the absence of conflict, the embodiments and features therein can be combined with each other. At the same time, the straw head of the present application can be integrally formed to connect bases of various structures and set at various angles of the base. The straw head and the straw base can be installed forward from the plug hole of the container plug and the container assembly end, and can also be set to be reversely installed into the straw base from the plug hole at the other end of the container plug.

[0071] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A spray-proof and stick-proof straw tip, characterized in that: The invention comprises a connecting pipe (1) and a control pipe (2) arranged on the connecting pipe (1); a water inlet (3) is provided at one end of the connecting pipe (1); the other end of the connecting pipe (1) is connected to the control pipe (2); the control pipe (2) comprises a connecting portion (21) connected to the connecting pipe (1), a bite portion (22) arranged on the connecting portion (21); and a control portion (23) arranged at one end of the bite portion (22) away from the connecting portion (21); a valve (4) is provided on the bite portion (22); the wall thickness of the bite portion (22) is thinner than that of the connecting portion (21); and the wall thickness of the bite portion (22) is thinner than that of the control portion (23).

2. The anti-spray and anti-sticking pipette tip according to claim 1, characterized in that: The valve (4) comprises a control plate 1 (41) and a control plate 2 (42) arranged on the inner wall of the bite portion (22); a side of the control plate 1 (41) close to the control plate 2 (42) is closely attached to the control plate 2 (42) to form a gap 1 (5); the control plate 1 (41) and the control plate 2 (42) are arranged to be inclined relative to each other; the distance between the control plate 1 (41) and the control plate 2 (42) gradually decreases as it approaches the water inlet (3).

3. The anti-spray and anti-sticking pipette tip according to claim 1, characterized in that: The valve (4) comprises a control plate three (43) and a control plate four (44) arranged on the inner wall of the bite portion (22); a side of the control plate three (43) close to the control plate four (44) is tightly attached to the control plate four (44) to form a gap two (6); the control plate three (43) and the control plate four (44) are arranged in a plane.

4. The anti-spray and anti-sticking pipette tip according to claim 1, characterized in that: The valve (4) comprises a control plate five (45) and a control plate six (46) which are arranged on the tube wall of the bite portion (22) and are recessed toward the bite portion (22); a side of the control plate five (45) close to the control plate six (46) is tightly attached to the control plate six (46) to form a gap three (7).

5. A spray-proof and stick-proof straw tip, characterized in that: The invention comprises a connecting pipe (1) and a control pipe (2) arranged on the connecting pipe (1); a water inlet (3) is provided at one end of the connecting pipe (1); the other end of the connecting pipe (1) is connected to the control pipe (2); the control pipe (2) comprises a connecting portion (21) connected to the connecting pipe (1), a bite portion (22) arranged on the connecting portion (21); and a control portion (23) arranged at one end of the bite portion (22) away from the connecting portion (21); a valve (4) is provided on the bite portion (22); the wall thickness of the bite portion (22) is thinner than that of the connecting portion (21); the wall thickness of the bite portion (22) is thinner than that of the control portion (23); the bite portion (22) is provided with a fitting portion (8); the fitting portion (8) is used to prevent the inner walls of the bite portion (22) from fitting and sealing each other.

6. The anti-spray and anti-sticking pipette tip according to claim 5, characterized in that: The valve (4) comprises a control plate 1 (41) and a control plate 2 (42) arranged on the inner wall of the bite portion (22); a side of the control plate 1 (41) close to the control plate 2 (42) is closely attached to the control plate 2 (42) to form a gap 1 (5); the control plate 1 (41) and the control plate 2 (42) are arranged to be inclined relative to each other; the distance between the control plate 1 (41) and the control plate 2 (42) gradually decreases as it approaches the water inlet (3).

7. The anti-spray and anti-sticking pipette tip according to claim 5, characterized in that: The valve (4) comprises a control plate three (43) and a control plate four (44) arranged on the inner wall of the bite portion (22); a side of the control plate three (43) close to the control plate four (44) is tightly attached to the control plate four (44) to form a gap two (6); the control plate three (43) and the control plate four (44) are arranged in a plane.

8. The anti-spray and anti-sticking pipette tip according to claim 5, characterized in that: The valve (4) comprises a control plate five (45) and a control plate six (46) which are arranged on the tube wall of the bite portion (22) and are recessed toward the bite portion (22); a side of the control plate five (45) close to the control plate six (46) is tightly attached to the control plate six (46) to form a gap three (7); and the control portion (23) is sealed at one end away from the valve (4).

9. The anti-spray and anti-sticking pipette tip according to claim 5, characterized in that: The fitting portion (8) comprises a fitting block (81) arranged on the tube wall of the bite portion (22).

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