Portable closed liquid sampler

Abstract

The utility model relates to a portable closed liquid sampler which comprises a sampling assembly and a branch pipe connecting assembly connected to a sampling branch pipe, the branch pipe connecting assembly comprises a connector block fixedly connected to the end of the sampling branch pipe, a counter bore is formed in the end, facing the sampling branch pipe, of the connector block, a connecting hole is formed in the bottom of the counter bore, and the sampling branch pipe is connected with the connecting hole. A blocking plate and a spring for pressing the blocking plate on the end part of the connecting hole are arranged in the counter bore; a through hole positioned on the outer side of the connecting hole is formed in the blocking plate; the sampling assembly comprises a sampling pipe, a plug fixedly connected to one end of the sampling pipe and a piston located in the sampling pipe, a piston rod is fixedly connected to the piston, a sampling hole communicated with the interior of the sampling pipe is formed in the plug, and the plug is matched with the connecting hole. And no liquid leaks in the sampling process and after sampling, so that the sampling safety is improved, and the operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling mechanisms, in particular to a portable liquid closed sampler. Background Art

[0002] In a production workshop, there are various types of finished or semi-finished liquids in a large number of product pipelines. In order to ensure the quality of the final products, it is necessary to sample the pipelines at each link and detect the liquids therein, so as to ensure the quality of the final products.

[0003] The current sampling method generally sets a sampling branch pipe on the main pipeline to be sampled, and installs a manual valve on the sampling branch pipe. During sampling, the valve is opened to realize liquid sampling. However, this sampling method is prone to leakage of the sampled liquid. Especially for liquids with high pressure, it is easy to cause liquid splashing. Especially for toxic liquids, it is easy to cause harm to personnel. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a portable liquid closed sampler.

[0005] The utility model is realized by the following technical solutions. A portable liquid closed sampler is provided, which includes a sampling component and a branch pipe connection component connected to the sampling branch pipe. The branch pipe connection component includes a joint block fixed at the end of the sampling branch pipe. One end of the joint block facing the sampling branch pipe is provided with a counterbore, and a connection hole is opened at the bottom of the counterbore. A plug plate and a spring for pressing the plug plate against the end of the connection hole are arranged in the counterbore. A through hole located outside the connection hole is opened on the plug plate. The sampling component includes a sampling pipe, a plug fixed at one end of the sampling pipe, and a piston located inside the sampling pipe. A piston rod is fixed on the piston. A sampling hole communicating with the inside of the sampling pipe is opened on the plug, and the plug is adapted to the connection hole.

[0006] In this solution, the branch pipe connection component is installed on the sampling branch pipe of the main pipeline. The plug plate is pressed against the bottom of the counterbore by the elastic force of the spring to block the connection hole. When sampling is required, the plug at the front end of the sampling component is inserted into the connection hole, and the front end of the plug pushes the plug plate inward, so that the inside of the sampling branch pipe enters the sampling pipe through the through hole and the sampling hole. By pulling the piston rod outward, the piston moves outward, so as to realize sampling inside the sampling pipe.

[0007] As an optimization, a plurality of convex platforms are fixed on the front end face of the plug. The liquid can enter the sampling hole through the gap between the plug plate and the plug through the convex platforms.

[0008] As an optimization, an operation plate located outside the sampling pipe is fixed at the end of the piston rod away from the piston. The operation plate can facilitate the outward pulling operation of the piston rod.

[0009] As an optimization, an external thread is provided on the plug, and an internal thread is provided in the connection hole. The threaded connection between the plug and the connection hole is realized through the thread, which facilitates the insertion of the plug and prevents liquid leakage.

[0010] As an optimization, a stop ring is fixedly connected in the counterbore, and the spring is located between the stop ring and the plugging plate. The installation of the spring is realized through the stop ring.

[0011] As an optimization, a plurality of through holes are provided and are evenly distributed along the circumferential direction of the connection hole. Thereby, the flow rate of the liquid passing through is increased.

[0012] As an optimization, the joint block is threadedly connected to the sampling branch pipe. It is convenient for the installation of the joint block.

[0013] The beneficial effects of the present utility model are as follows: A portable liquid tight sampling device of the present utility model can realize the sampling of liquid, and there is no liquid leakage during and after the sampling process, improving the safety of sampling and being convenient to operate. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the use state of the present utility model;

[0015] Figure 2 It is a cross-sectional view of the first state of the present utility model;

[0016] Figure 3 It is a cross-sectional view of the second state of the present utility model;

[0017] As shown in the figure:

[0018] 1, main pipeline; 2, sampling branch pipe; 3, branch pipe connection assembly; 4, sampling assembly; 31, joint block; 32, stop ring; 33, spring; 34, plugging plate; 35, through hole; 36, connection hole; 41, sampling pipe; 42, plug; 43, sampling hole; 44, boss; 45, piston; 46, piston rod; 47, operation plate. Detailed Embodiments

[0019] To clearly illustrate the technical features of the present solution, the present solution will be described below through specific embodiments.

[0020] As Figures 1 to 3 shown, a portable liquid tight sampling device of the present utility model includes a sampling assembly 4 and a branch pipe connection assembly 3 connected to the sampling branch pipe 2. The sampling branch pipe 2 is connected to the main pipeline 1 and has a diameter smaller than that of the main pipeline 1.

[0021] The branch pipe connection assembly 3 includes a joint block 31 fixedly connected to the end of the sampling branch pipe 2. The joint block 31 is a stepped cylindrical structure. One end of the joint block 31 close to the sampling branch pipe 2 is provided with an external thread, and an internal thread is provided in the sampling branch pipe 2, so that the joint block 31 is threadedly connected to the sampling branch pipe 2. In order to prevent the joint block 31 from rotating, the joint block 31 and the sampling branch pipe 2 can be fixed with thread glue or spot welding.

[0022] One end of the joint block 31 facing the sampling branch pipe 2 is provided with a counterbore. The counterbore is a circular counterbore and is coaxial with the sampling branch pipe 2. A connection hole 36 is opened at the bottom of the counterbore. The connection hole 36 is a through hole and is coaxial with the counterbore.

[0023] A plug plate 34 and a spring 33 for pressing the plug plate 34 against the end of the connection hole 36 are installed in the counterbore. The outer diameter of the plug plate 34 is the same as the inner diameter of the counterbore. A stop ring 32 is fixedly connected in the counterbore. The spring 33 is located between the stop ring 32 and the plug plate 34, so as to press the plug plate 34 against the bottom surface of the counterbore to realize the sealing of the connection hole 36.

[0024] The plug plate 34 is provided with through holes 35 located outside the connection hole 36; there are multiple through holes 35 and they are evenly distributed along the circumferential direction of the connection hole 36.

[0025] The sampling assembly 4 includes a sampling tube 41, a plug 42 fixedly connected to one end of the sampling tube 41, and a piston 45 located inside the sampling tube 41. The diameter of the plug 42 is smaller than the diameter of the sampling tube 41. The plug 42 is adapted to the connection hole 36. Specifically, an external thread is provided on the outside of the plug 42, and an internal thread is provided in the connection hole 36, so that the plug 42 can be threadedly connected inside the connection hole 36.

[0026] A piston rod 46 is fixedly connected to the piston 45. One end of the piston rod 46 far from the piston 45 is fixedly connected to an operation plate 47 located outside the sampling tube 41.

[0027] The plug 42 is provided with a sampling hole 43 communicating with the inside of the sampling tube 41. The sampling hole 43 is coaxially arranged with the plug 4 and its inner diameter is less than 1 mm.

[0028] A plurality of convex platforms 44 are fixedly connected to the front end face of the plug 42. Through the convex platforms, liquid can enter the sampling hole through the gap between the plug plate and the plug.

[0029] The usage method of the present utility model:

[0030] The branch pipe connection assembly 3 is installed on the sampling branch pipe 2 of the main pipeline 1, and the plug plate 34 is pressed against the bottom of the counterbore by the elastic force of the spring 33 to seal the connection hole 36.

[0031] When sampling is required, insert the plug 42 at the front end of the sampling assembly 4 into the connection hole 36 and insert it inward by spiral rotation. The boss 44 at the front end of the plug 42 pushes the plug plate 34 inward, so that the inside of the sampling branch pipe 2 enters the sampling pipe 41 through the through hole 35 and the sampling hole 43. Pull the piston rod 46 outward to move the piston 45 outward, so as to realize sampling inside the sampling pipe 41. The diameter of the sampling hole 43 is less than 1 mm. Therefore, after the sampling assembly 4 is pulled out, the liquid will not leak from the sampling hole 43.

[0032] Of course, the above description is not limited to the above examples. The technical features not described in the present utility model can be realized by or adopted from the prior art, and will not be elaborated here. The above embodiments and drawings are only used to illustrate the technical solutions of the present utility model and are not intended to limit the present utility model. The present utility model has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the technical field within the scope of the essence of the present utility model do not depart from the purpose of the present utility model and should also fall within the scope of the claims of the present utility model.

Claims

1. A portable liquid sealed sampler, characterized in that: The invention comprises a sampling assembly (4) and a branch pipe connecting assembly (3) connected to a sampling branch pipe (2), wherein the branch pipe connecting assembly (3) comprises a joint block (31) fixedly connected to the end of the sampling branch pipe (2), the joint block (31) having a countersunk hole at one end facing the sampling branch pipe (2), a connecting hole (36) being formed at the bottom of the countersunk hole, a blocking plate (34) and a spring (33) for pressing the blocking plate (34) against the end of the connecting hole (36) being arranged in the countersunk hole, and a through hole (35) located outside the connecting hole (36) being formed on the blocking plate (34); the sampling assembly (4) comprises a sampling tube (41), a plug (42) fixedly connected to one end of the sampling tube (41), and a piston (45) located in the sampling tube (41), a piston rod (46) being fixedly connected to the piston (45), a sampling hole (43) communicating with the inside of the sampling tube (41) being formed on the plug (42), and the plug (42) being adapted to fit the connecting hole (36).

2. A portable liquid sealed sampler according to claim 1, characterized in that: A plurality of bosses (44) are fixedly connected to the front end surface of the plug (42).

3. A portable liquid sealed sampler according to claim 1, characterized in that: One end of the piston rod (46) away from the piston (45) is fixedly connected to an operating plate (47) located outside the sampling tube (41).

4. A portable liquid sealed sampler according to claim 1, characterized in that: The plug (42) is provided with an external thread on the outside, and the connecting hole (36) is provided with an internal thread on the inside.

5. A portable liquid sealed sampler according to claim 1, characterized in that: A stop ring (32) is fixedly connected in the counterbore, and the spring (33) is located between the stop ring (32) and the blocking plate (34).

6. A portable liquid sealed sampler according to claim 1, characterized in that: A plurality of through holes (35) are provided and are evenly distributed along the circumference of the connecting hole (36).

7. A portable liquid sealed sampler according to claim 1, characterized in that: The joint block (31) is threadedly connected to the sampling branch pipe (2).

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