Replaceable suction head for sampling device
By designing a limiting ring and anti-overflow cavity structure for replaceable suction tips, the problem of difficulty in sampling in corners and recessed locations of existing sampling equipment is solved, achieving stable and convenient sample collection and equipment protection.
Patent Information
- Application Number
- CN202520283838.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2025-02-14
- Filing Date
- 2025-02-21
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-02-21
AI Technical Summary
Existing sampling equipment is difficult to effectively sample liquids, powders, and other substances, especially in corners and recessed areas where it is difficult to reach the sampling port, and powder can easily enter the negative pressure equipment, causing damage to the equipment.
A replaceable suction tip was designed, including a negative pressure assembly, a negative pressure head, an adapter, a sampling bottle, and a suction head. The suction head is flexible through the cooperation of a limiting ring and a support rod. Combined with an anti-overflow cavity structure, it prevents the sample from overflowing into the negative pressure assembly. The suction head can also be more easily inserted when sampling in corners and recessed positions.
It enables convenient sampling in corners and recessed areas, avoids sample spillage and damage to negative pressure equipment, and improves sampling stability and equipment lifespan.
Smart Images
Figure CN223808186U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sampling equipment field especially, it is a kind of replaceable suction head for sampling device. BACKGROUND
[0002] In part criminal investigation, medicine, water quality etc. field detection, usually need to sample and keep the granular matter, powder, hair, liquid etc. left in the scene, to provide subsequent laboratory detection step, and the existing sampling equipment usually adopts pincers to take to packaging bag, or negative pressure equipment directly connects sampling bottle etc. mode to carry out sampling operation, and pincers take mode is difficult to sample liquid, powder etc. material, and negative pressure equipment directly connects sampling bottle and is easy to appear the problem of powder into negative pressure equipment.
[0003] And, the sampling equipment of present time is usually difficult to extend sampling port into suitable position when sampling in corner, recess etc. position, so that sampling operation in above-mentioned scene is more difficult. UTILITARY MODEL
[0004] The utility model aims at providing a kind of replaceable suction head for sampling device that improves the sampling convenient of corner, recess etc. position.
[0005] To solve above-mentioned technical problem, the utility model provides a kind of replaceable suction head for sampling device, including negative pressure component, negative pressure head connected in the one side of negative pressure component, adapter connected in the one end of negative pressure head, the sampling bottle and suction head are detachably connected in the two sides of adapter, the negative pressure pipe is arranged in the one side of adapter, the negative pressure pipe is used to connect negative pressure head and sampling bottle, sampling pipe is arranged in the other side of adapter, the suction head is used to connect sampling bottle and suction head, and the inside of negative pressure head is equipped with anti-overflow cavity;Limiting ring is set on the outer periphery of suction head, limiting ring is connected in limiting lever, limiting lever is connected between supporting rod and adapter, and limiting lever can be rotated relative to supporting rod, to make limiting ring drive suction head to bend when limiting lever is rotated relative to supporting rod.
[0006] Further, press block is movably arranged in the one side of adapter, press block is connected with extension rod in the one side, and the one end of extension rod is connected with the one side of limiting ring, to make limiting ring drive suction head to bend when press block is moved relative to adapter.
[0007] Further, elastic member is connected between adapter and press block, and adapter has limiting block in the one side, and the end of elastic member is connected on limiting block.
[0008] Further, the one side of limiting ring has connecting buckle, and the end of extension rod has connecting port, and connecting buckle and connecting port are connected in the mode of snap.
[0009] Further, the suction port of the negative pressure assembly is arranged in the inner side of the negative pressure head, and the suction port is arranged eccentrically relative to the negative pressure head, and the inner side of the negative pressure head is provided with an air inlet pipe which is located at the center of the inner side of the negative pressure head and is communicated to the adapter.
[0010] Further, the negative pressure head is connected with the adapter through a sealing element, the air inlet pipe is communicated to the sealing element, and the negative pressure pipe is clamped in the sealing element.
[0011] Further, the end of the sampling pipe is arranged at the lower side in the inside of the sampling bottle, and one end of the negative pressure pipe is located at the top in the inside of the sampling bottle.
[0012] Further, the sampling bottle is threadedly connected with the adapter.
[0013] Further, the suction head is interference-fitted with the adapter.
[0014] Further, the bottom in the inside of the sampling bottle is conical.
[0015] The utility model discloses the beneficial effect lies in: after installing sampling bottle and suction head respectively to the both sides corresponding position of adapter, connecting the adapter to the negative pressure head, the sampling pipe is communicated suction head and sampling bottle at this time, and the negative pressure pipe is communicated negative pressure head and sampling bottle, so that when the negative pressure assembly starts to suck, the suction force can be generated at the suction head through the negative pressure pipe and sampling bottle, and then the sample is sucked into the sampling bottle, and when the sample in the sampling bottle is too much to overflow to the negative pressure pipe, because of the structural arrangement of the anti-overflow cavity, the overflowed sample will enter the anti-overflow cavity, avoiding the sample directly entering the negative pressure assembly and causing the damage of the negative pressure assembly.
[0016] Meanwhile, when sampling in the corner, recess and the like, the limiting rod is rotated relative to the supporting rod, the limiting ring is rotated, and in the rotating process, the suction head is bent through the limiting ring, so that the suction position of the suction head is more easily extended into the corner, recess and the like to sample. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the structural schematic diagram of the utility model.
[0018] Figure 2 It is the inside schematic diagram of the negative pressure head in the utility model.
[0019] Figure 3 It is the inside schematic diagram of the negative pressure head in the utility model. Figure 2 The local enlarged view of A in the utility model.
[0020] Reference signs: 1, negative pressure assembly; 2, negative pressure head; 3, adapter; 4, sampling bottle; 5, suction head; 6, negative pressure pipe; 7, sampling pipe; 8, anti-overflow cavity; 9, limiting ring; 10, limiting rod; 11, supporting rod; 12, pressing block; 13, extension rod; 14, elastic piece; 15, connecting buckle; 16, connecting port; 17, suction port; 18, air inlet pipe; 19, sealing piece. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art belong to the scope of protection of the utility model.
[0022] Those skilled in the art should understand that, in the disclosure of the utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation on the utility model.
[0023] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.
[0024] As Figures 1-3 The utility model provides a replaceable suction head for sampling device, including negative pressure assembly 1, the negative pressure head 2 of connecting in negative pressure assembly 1 one side, the adapter 3 of connecting in negative pressure head 2 one end, the sampling bottle 4 and suction head 5 are detachably connected respectively on the both sides of adapter 3, the negative pressure pipe 6 for connecting negative pressure head 2 and sampling bottle 4 is arranged in one side of adapter 3, the sampling pipe 7 for connecting suction head 5 and sampling bottle 4 is arranged in the other side of adapter 3, and the anti-overflow cavity 8 is set up in the inside of negative pressure head 2, the limiting ring 9 is set up in the outer periphery of suction head 5, the limiting ring 9 is connected in limiting rod 10, the limiting rod 10 is connected between limiting rod 10 and adapter 3 through supporting rod 11, and limiting rod 10 can rotate relative to supporting rod 11, so that when limiting rod 10 rotates relative to supporting rod 11, limiting ring 9 drives suction head 5 to bend.
[0025] After the sampling bottle and the suction head are respectively installed to the corresponding positions on both sides of the adapter, the adapter is connected to the negative pressure head, at this time, the sampling tube is communicated with the suction head and the sampling bottle, and the negative pressure tube is communicated with the negative pressure head and the sampling bottle, so that when the negative pressure assembly starts to suck, the suction head can generate suction force through the negative pressure tube and the sampling bottle, and then the sample is sucked into the sampling bottle, and when the sample in the sampling bottle overflows to the negative pressure tube, due to the structure of the anti-overflow cavity, the overflowing sample enters the anti-overflow cavity, avoiding the direct entry of the sample into the negative pressure assembly and causing damage to the negative pressure assembly.
[0026] Meanwhile, when sampling in corners, recesses and the like, the limiting rod is rotated relative to the supporting rod, so that the limiting ring rotates, and in the rotating process, the limiting ring drives the suction head to bend, so that the suction position of the suction head is more easily stretched into the corners, recesses and the like for sampling.
[0027] Among them, the negative pressure assembly can adopt an air pump, a sealing ring is arranged at the connection position of the negative pressure head and the negative pressure assembly, a sealing ring is arranged between the adapter and the sampling bottle, the suction head is made of rubber material, and a torsional spring is arranged at the rotating connection position of the supporting rod and the limiting rod.
[0028] Preferably, a pressing block 12 is movably arranged on one side of the adapter 3, an extension rod 13 is connected to one side of the pressing block 12, and one end of the extension rod 13 is clamped to one side of the limiting ring 9, so that when the pressing block 12 moves relative to the adapter 3, the limiting ring 9 drives the suction head 5 to bend.
[0029] Specifically, the operator presses the pressing block, so that the pressing block pulls the extension rod to move, and then the clamping cooperation of the extension rod and the limiting ring drives one side of the limiting ring to rotate, at this time, the limiting rod rotates relative to the supporting rod, so as to support and position the limiting ring, and the limiting ring drives the suction head to bend and suck through rotation.
[0030] In an embodiment of the present scheme, the pressing block and the adapter are movably connected through the cooperation of the sliding block and the sliding groove.
[0031] Preferably, an elastic member 14 is connected between the adapter 3 and the pressing block 12, and a limiting block is arranged on one side of the adapter 3, and the end of the elastic member 14 is clamped on the limiting block.
[0032] Specifically, the elastic member elastically resets the pressing block, so that after the operator releases the pressing block, the elastic member pushes the pressing block and the extension rod to move and reset, and then the limiting ring rotates and resets under the action of the limiting rod and the torsional spring, so as to ensure the normal use of the suction head.
[0033] Among them, the elastic member adopts a spring structure, and the limiting block is a protruding block structure, so that the protruding block is buckled on the inner side of the end of the elastic member.
[0034] Preferably, the limiting ring 9 has a connecting buckle 15 on one side, the end of the extension rod 13 has a connecting port 16, and the connecting buckle 15 and the connecting port 16 are in clamping cooperation.
[0035] Specifically, through the clamping cooperation of the connecting port and the connecting buckle, the movement of the extension rod can stably drive the rotation of the limiting ring, thereby ensuring the stability of the bending of the suction head.
[0036] At the same time, when the suction head is replaced and installed, the connecting port and the connecting buckle are separated from each other, then the limiting rod is reversely rotated, so that the limiting rod drives the limiting ring to move away from the position of the extension rod, at this time, the suction head is pulled out outward, and the suction head is taken out of the limiting ring to be replaced.
[0037] Preferably, the suction port 17 of the negative pressure assembly 1 is arranged to extend inside the negative pressure head 2, and the suction port 17 is arranged eccentrically relative to the negative pressure head 2, the inside of the negative pressure head 2 is provided with an air inlet pipe 18, and the air inlet pipe 18 is located at the center position inside the negative pressure head 2 and is communicated to the adapter 3.
[0038] Specifically, by arranging the air inlet pipe at the center position of the negative pressure head and arranging the suction port eccentrically relative to the negative pressure head, if the sample in the sampling bottle overflows in the air inlet pipe, the sample will not directly enter the suction port but will be stored in the anti-overflow cavity, thereby improving the stability during sampling.
[0039] Preferably, a sealing element 19 is connected between the negative pressure head 2 and the adapter 3, the air inlet pipe 18 is communicated to the sealing element 19, and the negative pressure pipe 6 is clamped in the sealing element 19.
[0040] Specifically, the sealing element improves the suction stability between the negative pressure head and the adapter, and the negative pressure pipe is clamped in the sealing element, so that the connection of the sampling sample, the adapter and the sealing element is sealed enough, thereby improving the suction efficiency.
[0041] The connecting position of the sealing element and the negative pressure head has a sealing ring, and the outer periphery of the side end of the negative pressure pipe close to the sealing element has a rubber structure, the rubber structure of the negative pressure pipe is in interference fit with the sealing element, thereby improving the connection stability of the negative pressure pipe.
[0042] Preferably, the end of the sampling pipe 7 extends to the lower side inside the sampling bottle 4, and one end of the negative pressure pipe 6 is located at the top inside the sampling bottle 4.
[0043] Specifically, when the sample enters the sampling bottle through the sampling pipe, the sample is kept at the bottom of the sampling bottle through the end of the sampling pipe, and the suction position of the negative pressure pipe is at the top of the sampling bottle, thereby effectively avoiding the case that the sample in the sampling pipe is directly sucked by the negative pressure pipe, and improving the storage stability of the sample.
[0044] Preferably, the sampling bottle 4 is in threaded cooperation with the adapter 3, so that the sampling bottle can be conveniently mounted or dismounted on the adapter, improving the convenience of replacement in the actual sampling process.
[0045] Preferably, the suction head 5 is in interference fit with the adapter 3, so that the suction head and the adapter are relatively sealed, improving the sampling stability.
[0046] In an embodiment of the present scheme, the suction head is made of rubber material.
[0047] Preferably, the inside bottom of the sampling bottle 4 is conical.
[0048] Specifically, since the sample needs to enter the sampling bottle through the sampling tube, and the sampling tube is difficult to uniformly disperse the sample to each position of the sampling bottle, the sample in the sampling bottle will be accumulated higher at the lower side of the sampling tube, and the present scheme sets the inside bottom of the sampling bottle to be conical, so that the sample will first gather to the middle position of the sampling bottle, and then uniformly disperse outward from the middle position, thereby improving the sampling and storage stability of the whole sampling bottle.
[0049] The present utility model is not limited to the above-mentioned best implementation, and anyone can derive other various forms of products under the inspiration of the present utility model, but regardless of any changes in shape or structure, any technical scheme with the same or similar to the present application falls within the protection scope of the present utility model.
Claims
1. A replaceable tip for a sampling device, characterized by: The utility model provides a negative pressure assembly (1), connect in negative pressure assembly (1) one side's negative pressure head (2), connect in negative pressure head (2) one end's adapter (3), the adapter (3) both sides are detachable connection has sampling bottle (4) and suction head (5) respectively, negative pressure pipe (6) is provided in the side of adapter (3), negative pressure pipe (6) is used for connecting negative pressure head (2) and sampling bottle (4), sampling pipe (7) is provided in the other side of adapter (3), sampling pipe (7) is used for connecting suction head (5) and sampling bottle (4), and the inside of negative pressure head (2) is provided with anti -overflow chamber (8), the periphery of suction head (5) is provided with limiting ring (9), limiting ring (9) is connected in limiting rod (10), limiting rod (10) is connected between the support rod (11) with adapter (3), and limiting rod (10) can rotate relative to support rod (11), so that when limiting rod (10) rotates relative to support rod (11), limiting ring (9) drives suction head (5) to bend.
2. The replaceable tip for a sampling device of claim 1, wherein: Pressing block (12) is movably arranged on one side of adapter (3), and one side of pressing block (12) is connected with extension rod (13), one end of extension rod (13) is connected with one side of limiting ring (9), so that when pressing block (12) moves relative to adapter (3), limiting ring (9) drives suction head (5) to bend.
3. The replaceable tip for a sampling device of claim 2, wherein: Elastic member (14) is connected between adapter (3) and pressing block (12), and limiting block is arranged on one side of adapter (3), and end of elastic member (14) is connected with limiting block.
4. The replaceable tip for a sampling device of claim 2, wherein: Connecting buckle (15) is arranged on one side of limiting ring (9), and connecting port (16) is arranged on one end of extension rod (13), and connecting buckle (15) is connected with connecting port (16).
5. The replaceable tip for a sampling device of claim 1, wherein: Suction port (17) of negative pressure assembly (1) is arranged in the inside of negative pressure head (2), and suction port (17) is eccentrically arranged relative to negative pressure head (2), air inlet pipe (18) is arranged in the inside of negative pressure head (2), and air inlet pipe (18) is arranged at the center of the inside of negative pressure head (2) and is connected with adapter (3).
6. The replaceable tip for a sampling device of claim 5, wherein: Sealing member (19) is arranged between negative pressure head (2) and adapter (3), air inlet pipe (18) is connected with sealing member (19), and negative pressure pipe (6) is connected with sealing member (19).
7. The replaceable tip for a sampling device of claim 1, wherein: End of sampling pipe (7) is arranged in the lower side of the inside of sampling bottle (4), and one end of negative pressure pipe (6) is arranged at the top of the inside of sampling bottle (4).
8. The replaceable tip for a sampling device of claim 1, wherein: Sampling bottle (4) and adapter (3) are screwed.
9. The replaceable tip for a sampling device of claim 1, wherein: Suction head (5) and adapter (3) are interference fitted.
10. The replaceable tip for a sampling device of claim 1, wherein: The inside of sampling bottle (4) is conical.