Fluid sampler
By designing a fluid sampler including a spindle and a removable sampling cylinder, the problem of difficult control of sampling volume and sample leakage in the prior art is solved, and the effect of precise control of sampling volume and preventing sample leakage is achieved, making operation more labor-saving.
Patent Information
- Application Number
- CN202420939736.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-30
AI Technical Summary
In the sampling process, existing fluid samplers are difficult to accurately control the sampling volume, and are prone to sample leakage, making operation difficult and inconvenient to control the sampling depth.
A fluid sampler including a spindle and a sampling cylinder is designed to achieve precise control of the sampling volume through the fitting of the removable sampling cylinder and the upper cover, and prevent sample leakage through the hinged structure and sealed connection.
Accurate control of the sampling volume is achieved, sample leakage is prevented, and the operation is more labor-saving, and the sampling barrel can be replaced according to different needs to measure samples of different volumes.
Smart Images
Figure CN222461094U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of physics, in particular to a liquid sample sampling technology, in particular to a fluid sampler. Background Art
[0002] In the process of production or experimental sampling, it is often necessary to use a fluid sampler to measure liquid at a certain depth below the liquid surface from an open container, a covered container, or a natural environment such as a pond or river.
[0003] Traditional fluid samplers are mainly needle-type, which consist of a needle tube and a piston mounted on the needle tube. When sampling, the sampler is extended to the sampling depth and the piston is pulled to perform sampling. However, due to the small volume of the needle tube cavity of the needle-type fluid sampler, the volume of the sample that can be collected is relatively limited, and a large force is required to work against gravity and atmospheric pressure during the sampling process, which is relatively laborious. When the sampler is recovered, the fluid sample is also prone to leakage.
[0004] Another sampler in the prior art blocks the top of the sampler to balance the internal and external atmospheric pressures for sampling. This sampling method cannot accurately control the sampling depth for sampling, and the sampler needs to be long enough to balance the atmospheric pressure. It is generally only suitable for measuring shallow samples. The extraction method using an external pump will drastically affect the sampling environment due to its fast extraction rate, and it is difficult to control the sampling amount. The pump itself is relatively heavy and cumbersome to operate. Utility Model Content
[0005] In view of the defects existing in the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a fluid sampler which can accurately control the sampling volume, prevent sample leakage and save labor.
[0006] In order to solve the above technical problems, the utility model provides a fluid sampler, characterized in that it comprises a main shaft and a sampling cylinder, wherein the sampling cylinder is detachably fixed on the main shaft;
[0007] An upper connecting rod and a lower connecting rod which are slidably matched with the main shaft are arranged in the tube cavity of the main shaft, and the lower connecting rod is sealed and connected with the main shaft;
[0008] The spindle is a hollow pipe, the upper end of the spindle is provided with a spindle handle, the upper part of the spindle is provided with a first upper connecting rod connection port and a second upper connecting rod connection port, the lower part of the spindle is provided with a first lower connecting rod connection port and a second lower connecting rod connection port, the upper end of the sampling tube is provided with an upper cover for sealing the tube port, the lower end of the sampling tube is provided with a leaking hole, the side wall of the sampling tube is provided with a sampling tube connection port, and the sampling tube connection port is connected to the second lower connecting rod connection port;
[0009] An upper cover handle is provided at the upper end of the upper connecting rod, and the upper cover handle extends to the outside of the main shaft through the first upper connecting rod connection port, and the upper cover is fixedly connected to the upper connecting rod in a detachable manner through the second upper connecting rod connection port;
[0010] A lower cover handle is fixed to the upper end of the lower connecting rod, and a convex rod is fixed to the lower end of the lower connecting rod. The lower cover handle extends to the outside of the main shaft through the first lower connecting rod connecting port, and the convex rod extends into the barrel cavity of the sampling barrel through the sampling barrel connecting port. A lower cover for blocking the water leakage hole is provided on the convex rod.
[0011] Furthermore, the sampling tube is provided with two fixing plates for fixing the sampling tube on the front and rear sides of the main shaft.
[0012] Furthermore, the spindle handle is hinged to the spindle.
[0013] Furthermore, the upper cover handle is hinged to the upper connecting rod.
[0014] Furthermore, the lower cover handle is hinged to the lower connecting rod.
[0015] Furthermore, the main shaft is provided with a scale for measuring the sampling depth.
[0016] The fluid sampler provided by the utility model adopts a sampling tube to collect samples, and the opening and closing of the sampling tube is controlled by lifting the upper cover. The sampling volume can be fixed during sampling, and leakage of the sample can be prevented when the sample is recovered; the sampling volume can also be accurately controlled by replacing sampling tubes of different volumes; compared with the existing samplers that extract samples through pistons and need to overcome the pressure caused by the sampling depth, the utility model only needs to overcome the gravity of the upper cover and the resistance it encounters during sampling, which is more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a top right front perspective stereogram of the fluid sampler of an embodiment of the utility model;
[0018] Figure 2 It is an exploded view of a fluid sampler according to an embodiment of the utility model from a top right front perspective;
[0019] Figure 3 It is an exploded view of the fluid sampler according to an embodiment of the utility model when viewed from the left front angle. DETAILED DESCRIPTION
[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments, but the embodiments are not intended to limit the utility model. All similar structures and similar variations of the utility model should be included in the protection scope of the utility model. The semicolons in the utility model all represent the relationship of and.
[0021] like Figure 1-Figure 3As shown, a fluid sampler provided by an embodiment of the utility model comprises a main shaft 1 and a sampling barrel 4, wherein the sampling barrel 4 is detachably fixed on the main shaft 1;
[0022] An upper connecting rod 2 and a lower connecting rod 3 are provided in the lumen of the main shaft 1 and are slidably matched with the main shaft 1. The lower connecting rod 3 is sealed and connected to the main shaft 1.
[0023] The spindle 1 is a hollow pipe, the upper end of the spindle 1 is provided with a spindle handle 11, the upper part of the spindle 1 is provided with a first upper connecting rod connection port 121 and a second upper connecting rod connection port 122, the lower part of the spindle 1 is provided with a first lower connecting rod connection port 131 and a second lower connecting rod connection port 132, the upper end of the sampling tube 4 is provided with an upper cover 22 for sealing the tube port, the lower end of the sampling tube 4 is provided with a leaking hole 42, the side wall of the sampling tube 4 is provided with a sampling tube connection port 41, and the sampling tube connection port 41 is connected to the second lower connecting rod connection port 132;
[0024] An upper cover handle 21 is provided at the upper end of the upper connecting rod 2. The upper cover handle 21 extends to the outside of the main shaft through the first upper connecting rod connection port 121. The upper cover 22 is fixedly connected to the upper connecting rod 2 in a detachable manner through the second upper connecting rod connection port 122.
[0025] A lower cover handle 31 is fixed to the upper end of the lower connecting rod 3, and a convex rod 32 is fixed to the lower end of the lower connecting rod 3. The lower cover handle 31 extends to the outside of the main shaft 1 through the first lower connecting rod connecting port 131, and the convex rod 32 extends into the barrel cavity of the sampling barrel 4 through the sampling barrel connecting port 41. A lower cover 33 for blocking the water leakage hole 42 is provided on the convex rod 32.
[0026] In the embodiment of the utility model, the sampling tube 4 is provided with two fixing plates 43 for fixing the sampling tube 4 on the front and rear sides of the main shaft 1, the main shaft handle 11 is hinged to the main shaft 1, the upper cover handle 21 is hinged to the upper connecting rod 2, the lower cover handle 31 is hinged to the lower connecting rod 3, and the main shaft 1 is provided with a scale for measuring the sampling depth (not shown in the figure).
[0027] The present invention is suitable for liquid depth sampling, and its use method is as follows:
[0028] In the initial state, the upper cover 22 covers the upper end of the sampling tube 4 , and the lower cover 33 on the protruding rod 32 covers the water leakage hole 42 .
[0029] When sampling, the operator holds the spindle handle 11 to extend the sampler 4 body into the sampled liquid. After reaching the sampling depth according to the scale on the spindle 1, the operator lifts the upper cover handle 21 upward to drive the upper cover 22 to lift, so that the upper cover 22 is separated from the upper end of the sampling tube 4, and the sample liquid flows into the sampling tube 4 from the upper end of the sampling tube 4. After the sampling tube 4 is filled with liquid, the upper cover handle 21 is released so that the upper cover handle 21 slides down until the upper cover 22 covers the upper end of the sampling tube 4. At this time, the operator holds the spindle handle 11 to lift the sampler body until it is out of the sampling liquid to complete the sampling.
[0030] After the sampling is completed, the lower cover handle 31 is lifted upwards so that the lower cover 33 on the protruding rod 32 is separated from the water leakage hole 42 , and the sample liquid can be discharged from the sampling tube 4 .
[0031] When it is necessary to measure samples of different volumes, the sampling tube is replaced with a sampling tube with the same volume as the required sample, and the upper cover corresponding to the sampling tube is replaced.
[0032] After use, the main shaft handle 11, the upper cover handle 21 and the lower cover handle 31 are folded inwards respectively, so that the volume of the sampler 4 body is reduced, which is convenient for storage and carrying.
Claims
1. A fluid sampler, characterized in that: The invention comprises a main shaft (1) and a sampling tube (4), wherein the sampling tube (4) is fixed to the main shaft (1) in a detachable manner; an upper connecting rod (2) and a lower connecting rod (3) which are slidably matched with the main shaft (1) are arranged in the tube cavity of the main shaft (1), and the lower connecting rod (3) is sealedly connected to the main shaft (1); the main shaft (1) is a hollow pipe, a main shaft handle (11) is arranged at the upper end of the main shaft (1), a first upper connecting rod connecting port (121) and a second upper connecting rod connecting port (122) are arranged at the upper part of the main shaft (1), a first lower connecting rod connecting port (131) and a second lower connecting rod connecting port (132) are arranged at the lower part of the main shaft (1), an upper cover (22) for sealing the upper end of the sampling tube (4) is arranged at the tube mouth, a water leakage hole (42) is arranged at the tube bottom of the lower end of the sampling tube (4), and a side wall of the sampling tube (4) is provided with a sealing hole (43). A sampling barrel connection port (41) is provided, and the sampling barrel connection port (41) is connected to the second lower connecting rod connection port (132); an upper cover handle (21) is provided at the upper end of the upper connecting rod (2), and the upper cover handle (21) extends to the outside of the main shaft through the first upper connecting rod connection port (121), and the upper cover (22) is fixed to the upper connecting rod (2) in a detachable manner through the second upper connecting rod connection port (122); a lower cover handle (31) is fixed to the upper end of the lower connecting rod (3), and a protruding rod (32) is fixed to the lower end of the lower connecting rod (3), and the lower cover handle (31) extends to the outside of the main shaft (1) through the first lower connecting rod connection port (131), and the protruding rod (32) extends into the barrel cavity of the sampling barrel (4) through the sampling barrel connection port (41), and a lower cover (33) for blocking the water leakage hole (42) is provided on the protruding rod (32).
2. The fluid sampler according to claim 1, characterized in that: The sampling barrel (4) is provided with two fixing plates (43) for fixing the sampling barrel (4) on the front and rear sides of the main shaft (1).
3. The fluid sampler according to claim 1, characterized in that: The main shaft handle (11) is hinged to the main shaft (1).
4. The fluid sampler according to claim 1, characterized in that: The upper cover handle (21) is hinged to the upper connecting rod (2).
5. The fluid sampler according to claim 1, characterized in that: The lower cover handle (31) is hinged to the lower connecting rod (3).
6. The fluid sampler according to claim 1, characterized in that: The main shaft (1) is provided with a scale for measuring the sampling depth.