Self-stirring hot plunger type hand-cranking closed sampler

Abstract

The utility model discloses a self-heat-mixing plunger type hand-cranking closed sampler which comprises a flange seat and further comprises a valve body arranged on the side, away from a pipeline, of the flange seat, a sealing gasket is arranged between the valve body and the flange seat, the valve body and the flange seat are connected through a plurality of screws, and the side, away from the flange seat, of the valve body is connected with a valve cover through a plurality of screws. An inner thread is arranged on the inner side of the valve cover and is in threaded connection with a valve rod, a sampling nozzle is obliquely arranged on one side of the valve body, and a plunger sleeve is arranged in the valve body and is in sliding connection with a plunger body. According to the self-heat-mixing plunger type hand-cranking closed sampler, the sampler is directly welded on a flowing sampling medium pipeline, so that medium waste and medium silting are avoided, a medium circulating outlet pipeline and an additional vent nozzle are not needed, and the plunger body and the valve body adopt a sealing ring and filler (a low-temperature medium adopts polytetrafluoroethylene filler, a low-temperature medium adopts polytetrafluoroethylene filler, and a low-temperature medium adopts polytetrafluoroethylene filler); and a high-temperature medium adopts a graphite filler double-seal design, so that the risk of medium leakage is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sampler technology, specifically a self-stirring heated plunger-type hand-cranked sealed sampler. Background Technology

[0002] In existing chemical plants, sampling is typically achieved by opening and closing valves. While this method offers some convenience, it can lead to some media remaining in the valve channels as the medium flows through, resulting in wasted samples. Furthermore, sampling through valve channels requires the installation of media circulation outlet pipelines and venting ports, increasing the risk of sample waste and contamination. This, in turn, adds complexity and safety risks to the sampling process.

[0003] Therefore, a self-stirring hot plunger-type hand-cranked sealed sampler is urgently needed to solve the above problems. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: a self-stirring hot plunger-type hand-cranked sealed sampler, including a flange seat and a valve body disposed on the side of the flange seat away from the pipeline. A sealing gasket is provided between the valve body and the flange seat, and they are connected by multiple screws. A valve cover is connected to the side of the valve body away from the flange seat by multiple screws. The valve cover has an internal thread on its inner side, and a valve stem is threaded to the internal thread. A sampling nozzle is obliquely disposed on one side of the valve body. A plunger sleeve is provided inside the valve body, and a plunger body is slidably connected to the plunger sleeve. The side of the plunger body away from the flange seat is connected to the valve stem through a connecting assembly.

[0005] The side of the plunger body closest to the medium inlet is sealed to the valve body via a sealing ring, and the side wall of the plunger body closest to the valve stem is sealed to the valve body via packing.

[0006] The connecting assembly includes an annular dovetail groove formed on the side of the plunger body near the valve stem, the annular dovetail groove being provided with an annular dovetail plate, one end of the annular dovetail plate being connected to the valve stem.

[0007] A rocker arm is provided on the side of the valve stem away from the flange seat, and the rocker arm is connected to the valve stem via a protective assembly.

[0008] The protective assembly includes a spline hole formed in the valve stem, the spline hole is connected to a spline plate via a pressing assembly, a protective rod is connected to the side of the spline plate away from the valve cover, and the other end of the protective rod is connected to a crank handle and fixed by a nut.

[0009] The extrusion assembly includes an extrusion ring disposed on the side of the spline plate away from the guard rod. A spring is connected to the side of the extrusion ring away from the spline plate, and the other end of the spring is connected to the bottom wall of the spline hole.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. The self-stirring hot plunger-type hand-cranked sealed sampler of this utility model is directly welded to the pipeline of the flowing sampling medium, so there is no medium waste or stagnation. It does not require a medium circulation outlet pipeline or an additional vent. The plunger body and valve body adopt a double sealing design of sealing ring and packing (PTFE packing for low temperature medium and graphite packing for high temperature medium), which reduces the risk of medium leakage.

[0012] 2. The self-stirring hot plunger-type hand-cranked sealed sampler of this utility model has clearance fit between the valve body, plunger body, and plunger sleeve. When sampling, after the plunger body moves backward into place, the medium flows into the medium outlet from the small hole of the plunger sleeve. When closing, the plunger body moves forward and pushes the medium that has not flowed out of the valve body back into the sampling pipe. There is no residual liquid left in the valve body, and there is no situation of residual liquid condensation and blockage during secondary sampling.

[0013] 3. The self-stirring hot plunger type hand-cranked sealed sampler of this utility model has a unique structural design with a built-in circulation chamber in the valve body. The medium in the circulation chamber is always in communication with the medium in the pipeline, and there is no cooling of the valve body, so sampling does not require mild heating. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the sampler of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the protective component of this utility model;

[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Flange seat; 2. Valve body; 3. Valve cover; 4. Valve stem; 5. Screw; 6. Sampling nozzle; 7. Plunger sleeve; 8. Plunger body; 901. Annular dovetail groove; 902. Annular dovetail plate; 10. Sealing gasket; 11. Sealing ring; 12. Packing; 13. Handle; 1401. Spline hole; 1402. Spline plate; 1403. Protective rod; 1404. Nut; 1501. Compression ring; 1502. Spring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] Please see Figures 1-4 The self-stirring hot plunger-type hand-cranked sealed sampler shown in the figure includes a flange seat 1 and a valve body 2 located on the side of the flange seat 1 away from the pipeline. A sealing gasket 10 is provided between the valve body 2 and the flange seat 1 and they are connected by multiple screws 5. A valve cover 3 is connected to the side of the valve body 2 away from the flange seat 1 by multiple screws 5. The valve cover 3 has an internal thread on its inner side and a valve stem 4 is threaded to the internal thread. A sampling nozzle 6 is inclinedly provided on one side of the valve body 2. A plunger sleeve 7 is provided inside the valve body 2. A circumferential opening is provided on the side wall of the plunger sleeve 7 and is connected to the sampling nozzle 6. A plunger body 8 is slidably connected to the plunger sleeve 7. The side of the plunger body 8 away from the flange seat 1 is connected to the valve stem 4 through a connecting assembly.

[0022] It should be noted that the sampler is directly welded to the pipeline of the flowing sampling medium, resulting in no medium waste or stagnation. There is no need for a medium circulation outlet pipeline or a vent. The plunger body 8 and valve body 2 employ a double-seal design with a sealing ring 11 and packing 12 (PTFE packing for low-temperature media and graphite packing for high-temperature media), reducing the risk of medium leakage. Furthermore, the valve body 2, plunger body 8, and plunger sleeve 7 are all clearance fits. During sampling, after the plunger body 8 moves backward into position, the medium flows into the medium outlet through the small hole in the plunger sleeve 7. When closed, the plunger body 8 moves forward, pushing any remaining medium in the valve body 2 back into the sampling pipeline. No residual liquid remains in the valve body 2, eliminating the possibility of residual liquid condensation and blockage during secondary sampling.

[0023] Please see Figure 2 In the diagram, the side of the plunger body 8 near the medium inlet is sealed to the valve body 2 via a sealing ring 11, and the side wall of the plunger body 8 near the valve stem 4 is sealed to the valve body 2 via packing 12.

[0024] It should be noted that by using a double-sealing design of sealing ring 11 and packing 12 (PTFE packing for low-temperature media and graphite packing for high-temperature media) between plunger body 8 and valve body 2, the risk of media leakage is reduced.

[0025] Please see Figure 2The connecting components shown in the figure include an annular dovetail groove 901 opened on the side of the plunger body 8 near the valve stem 4, the annular dovetail groove 901 is provided with an annular dovetail plate 902, and one end of the annular dovetail plate 902 is connected to the valve stem 4.

[0026] It should be noted here that the connection components are designed to facilitate the synchronous movement of the plunger body 8 during the movement of the valve stem 4.

[0027] Please see Figures 1-4 The valve stem 4 in the figure is provided with a rocker handle 13 on the side away from the flange seat 1. The rocker handle 13 is connected to the valve stem 4 through a protective component.

[0028] It should be noted here that the crank handle 13 facilitates the rotation of the valve stem 4.

[0029] Working principle: When using this sampler, the flange seat 1 is first welded directly to the flowing sampling medium pipeline. When sampling is required, the crank handle 13 is turned counterclockwise. Under the action of the protective component, the valve stem 4 is rotated. Then, the threaded engagement between the valve stem 4 and the valve cover 3 drives the valve stem 4 to move. During the movement of the valve stem 4, the plunger body 8 is moved backward through the connecting component. When the front end of the plunger body 8 moves to the circumferential opening position of the plunger sleeve 7, the valve body 2 is connected to the sampling nozzle 6 at the medium outlet. At this time, the medium in the pipeline flows into the sampling bottle placed at one end of the sampling nozzle 6 under pressure, thereby realizing the sampling of the medium.

[0030] After sampling is completed, crank the handle 13 clockwise. The valve stem 4 drives the plunger body 8 forward to its position. One end of the plunger body 8 will abut against the sealing ring 11, thereby closing the sampling channel inside the valve body 2. During the forward movement of the plunger body 8, the medium that has not flowed out of the valve body 2 is pushed back into the sampling pipeline. There is no residual liquid left in the valve body 2, and there is no possibility of residual liquid condensation and blockage during secondary sampling. At the same time, the plunger body 8 and the valve body 2 adopt a double sealing design of sealing ring 11 and packing 12 (PTFE packing for low temperature media and graphite packing for high temperature media), which reduces the risk of medium leakage.

[0031] Meanwhile, the unique structural design of the valve body 2 with its own circulation chamber ensures that the medium in the circulation chamber is always in communication with the medium in the pipeline, and the valve body 2 does not experience cooling, so sampling does not require gentle heating.

[0032] Example 2

[0033] Please see Figure 4This embodiment further illustrates Example 1. The protective component shown in the figure includes a spline hole 1401 opened in the valve stem 4. The spline hole 1401 is connected to a spline plate 1402 through a pressing component. A protective rod 1403 is connected to the side of the spline plate 1402 away from the valve cover 3. The other end of the protective rod 1403 is connected to the crank handle 13 and fixed by a nut 1404.

[0034] It should be noted here that: through the setting of the protective component, when it is necessary to rotate the valve stem 4, the spline plate 1402 on one side of the protective rod 1403 must first be pushed into the spline hole 1401. Then, by utilizing the connection between the spline plate 1402 and the spline hole 1401, the rotation of the rocker arm 13 is achieved, thereby rotating the valve stem 4. Then, through the threaded engagement transmission between the valve stem 4 and the valve cover 3, the movement of the valve stem 4 is achieved.

[0035] After sampling is completed, the valve stem 4 is reset by rotating the handle 13 in the opposite direction. Then, the push on the handle 13 is released. At this time, under the elastic action of the compression component, the spline plate 1402 will be pushed to separate from the spline hole 1401, thereby realizing the separation between the handle 13 and the valve stem 4. This reduces the risk of the valve stem 4 moving due to accidental contact of the handle 13, thus ensuring the sealing performance between the plunger body 8 and the sealing ring 11, and reducing the risk of material waste due to media leakage.

[0036] Please see Figure 3 and Figure 4 The extrusion assembly shown in the figure includes an extrusion ring 1501 disposed on the side of the spline plate 1402 away from the guard rod 1403. A spring 1502 is connected to the side of the extrusion ring 1501 away from the spline plate 1402, and the other end of the spring 1502 is connected to the bottom wall of the spline hole 1401.

[0037] It should be noted here that: by setting up the extrusion component, when sampling is not required, the elastic force of the spring 1502 is used to push the spline plate 1402 to separate from the spline hole 1401, thereby realizing the separation between the rocker handle 13 and the valve stem 4.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A self-stirring, heated plunger-type hand-cranked sealed sampler, comprising: Flange seat (1); Its characteristic is that it further includes: A valve body (2) is located on the side of the flange seat (1) away from the pipeline. A sealing gasket (10) is provided between the valve body (2) and the flange seat (1), and they are connected by multiple screws (5). A valve cover (3) is connected to the side of the valve body (2) away from the flange seat (1) by multiple screws (5). The valve cover (3) has an internal thread on its inner side, and a valve stem (4) is threaded to the internal thread. A sampling nozzle (6) is inclinedly provided on one side of the valve body (2). A plunger sleeve (7) is provided inside the valve body (2). A plunger body (8) is slidably connected to the plunger sleeve (7). The side of the plunger body (8) away from the flange seat (1) is connected to the valve stem (4) through a connecting assembly.

2. The self-stirring heated plunger-type hand-cranked sealed sampler according to claim 1, characterized in that: The plunger body (8) is sealed to the valve body (2) on the side near the medium inlet by a sealing ring (11), and the side wall of the plunger body (8) near the valve stem (4) is sealed to the valve body (2) by a packing (12).

3. The self-stirring heated plunger-type hand-cranked sealed sampler according to claim 1, characterized in that: The connecting assembly includes an annular dovetail groove (901) opened on the side of the plunger body (8) near the valve stem (4), the annular dovetail groove (901) is provided with an annular dovetail plate (902), one end of the annular dovetail plate (902) is connected to the valve stem (4).

4. The self-stirring heated plunger-type hand-cranked sealed sampler according to claim 1, characterized in that: The valve stem (4) is provided with a rocker arm (13) on the side away from the flange seat (1), and the rocker arm (13) is connected to the valve stem (4) through a protective component.

5. The self-stirring heated plunger-type hand-cranked sealed sampler according to claim 4, characterized in that: The protective assembly includes a spline hole (1401) opened in the valve stem (4), the spline hole (1401) is connected to a spline plate (1402) by a pressing assembly, a protective rod (1403) is connected to the side of the spline plate (1402) away from the valve cover (3), and the other end of the protective rod (1403) is connected to the crank handle (13) and fixed by a nut (1404).

6. The self-stirring hot plunger-type hand-cranked sealed sampler according to claim 5, characterized in that: The extrusion assembly includes an extrusion ring (1501) disposed on the side of the spline plate (1402) away from the guard rod (1403). A spring (1502) is connected to the side of the extrusion ring (1501) away from the spline plate (1402), and the other end of the spring (1502) is connected to the bottom wall of the spline hole (1401).

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