A sample extraction storage transfer device

Abstract

The utility model relates to a kind of sample extraction storage transfer device, including box body, pivot is provided in box body interior, first cam, second cam, first partition valve, second partition valve, the first partition valve and second partition valve include valve stem, valve cover, valve seat, bellows;The valve seat bottom has first communicating port, side wall is equipped with second communicating port, the valve stem is used to close the first communicating port;The top of the valve stem is equipped with flange, bellows is sleeved on the valve stem, and two ends are respectively connected with the bottom of flange and the top of valve cover;First communicating port of first partition valve, first communicating port of second partition valve between being equipped with sample storage tube;First cam and second cam are sleeved on the front and back two sides of pivot, and first cam and second cam are respectively abutted on the top of valve stem.

Description

Technical Field

[0001] This utility model relates to the field of sample extraction and storage in production or experimentation, and is particularly suitable for environments where samples contain dust and are easily contaminated by the atmosphere or external environment after extraction. Sample extraction, storage, and transfer device. Background Technology

[0002] A sample extraction, storage, and transport device is a specialized piece of equipment used to collect, store, and transfer samples in a vacuum or specific environment. It is widely used in scientific research, industry, and medical fields to ensure that samples are not affected by external environmental factors (such as air, moisture, and contaminants) during collection and transport. Its principle is to first establish a negative pressure and clean environment inside the device using a vacuum system (such as a vacuum pump); then, the pressure difference of this negative pressure environment draws the sample into the device, preventing contact between the sample and the external environment and maintaining its original characteristics. After sampling and separation from relevant production and testing equipment, an isolation valve is used to isolate the sample from the external environment. The multiple sealing structures within the isolation valve enhance its resistance to dust, preserving the sample's original characteristics. Existing sample extraction, storage, and transport devices are rudimentary in structure, inconvenient to operate, and most cannot adapt to dusty environments, making samples susceptible to contamination or leakage. Furthermore, they lack corresponding counting operations during sample collection. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a sample extraction, storage, and transport device, comprising a housing, inside which are arranged a rotating shaft, a first cam, a second cam, a first isolation valve, and a second isolation valve.

[0004] The first and second isolation valves each include a valve stem, a valve cover, a valve seat, and a bellows. The valve cover covers the valve seat, and the valve stem extends into the valve seat through a through hole in the valve cover. The valve seat has a first communication port at its bottom and a second communication port on its side wall. The valve stem is used to close the first communication port. The valve stem has a flange at its top, and the bellows is sleeved on the valve stem, with its two ends connected to the bottom of the flange and the top of the valve cover, respectively. The bellows is used to realize the reciprocating motion of the valve stem. A sample storage tube is provided between the first communication port of the first isolation valve and the first communication port of the second isolation valve in the pipeline.

[0005] The first cam and the second cam are sleeved on the front and rear sides of the rotating shaft, and the first cam and the second cam respectively abut against the top of the valve stem. The rotating shaft is driven to rotate by the drive mechanism.

[0006] Furthermore, the driving mechanism is a handle rocker arm, and it is located on the outside of the housing.

[0007] Furthermore, multiple sealing rings are provided on the front end circumferentially of the valve stem, and a sealing gasket is fixed on the front end face of the valve stem.

[0008] Furthermore, the sample extraction, storage and transfer device also includes a self-pinning plunger and a locking plate. The locking plate is sleeved on the rotating shaft and fixed to the rotating shaft, located inside the box. The locking plate is also provided with a locking hole. The wall of the box is provided with a positioning hole. The self-pinning plunger can pass through the positioning hole and the locking hole to realize the locking function.

[0009] Furthermore, when the far or near rest points of the first and second cams contact the top of the valve stem, the positioning hole and the locking hole axis coincide.

[0010] Furthermore, the positioning hole includes a first positioning hole and a second positioning hole. When the far repose point of the first cam and the second cam contacts the top of the valve stem, the first positioning hole coincides with the axis of the locking hole; when the near repose point of the first cam and the second cam contacts the top of the valve stem, the second positioning hole coincides with the axis of the locking hole.

[0011] Furthermore, a sample storage tube is provided between the first isolation valve and the second isolation valve.

[0012] Furthermore, the sample extraction, storage, and transfer device also includes a counter located inside the box. The counter is a trigger counter, which completes one count when the far rest point of the first cam or the second cam triggers the counter.

[0013] Furthermore, the sample extraction, storage, and transfer device also includes a counter located inside the box. The counter is a trigger counter, whereby the edge of the locking plate triggers the counter when the locking hole and the positioning hole coincide, completing one count. Alternatively, the counter is a pull counter, where the locking plate and the pull rod of the pull counter are connected by a spring. When the locking plate rotates one revolution, the pull rod of the pull counter is pulled once, completing one count.

[0014] Furthermore, the sample extraction, storage, and transfer device also includes a counter located within the housing. This counter is a trigger-type counter; when the locking hole coincides with the axis of the first or second positioning hole, the edge of the locking plate triggers the counter, completing one count. This utility model's sample extraction, storage, and transfer device employs a compact overall structure and features a quick-connect and quick-disconnect structure with the production and testing equipment used for sampling, allowing for connection and separation without any tools. When the isolation valve is closed, it has a locking mechanism to prevent sample loss due to accidental operation or vibration during sample transfer. In addition, the isolation valve has a multi-seal structure, can withstand dusty environments, has excellent sealing performance, and the counter allows for counting the sampling process, facilitating personnel in tracking the number of samplings. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of the sample extraction, storage, and transfer device;

[0016] Figure 2 This is a schematic diagram of the internal component structure of the sample extraction, storage, and transport device box;

[0017] Figure 3 This is a cross-sectional view of the sample extraction, storage, and transport device;

[0018] Figure 4 This is a sectional view of an isolation valve;

[0019] Figure 5 This is a side view of the internal structure of the sample extraction, storage, and transport device. Detailed Implementation

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] See Figures 1-4 The sample extraction, storage and transfer device includes a box body 1, a rotating shaft 2, a first cam 3, a second cam 4, a first isolation valve 5, and a second isolation valve 6 inside the box body 1.

[0022] The first isolation valve 5 and the second isolation valve 6 have the same structure, including a valve stem 51, a valve cover 52, a valve seat 53, and a bellows 54, respectively; the valve cover 52 covers the valve seat 53, and the valve stem 51 extends into the valve seat 53 through the through hole on the valve cover 52.

[0023] The valve seat has a first communication port 56 at its bottom, and a second communication port 57 on the side wall of the valve seat 53. The valve stem 51 is used to close the first communication port 56, thereby enabling the first communication port 56 and the second communication port 57 to be connected or disconnected. Multiple sealing rings 58 are arranged circumferentially at the front end of the valve stem 51, and a sealing gasket 55 is fixed on the front end face of the valve stem 51. Through this multi-layer sealing structure, dust entry is effectively prevented, ensuring reliable performance and a long service life.

[0024] The valve stem 51 has a flange 511 at its top, and a bellows 54 is sleeved on the valve stem 51, with its two ends connected to the bottom of the flange 511 and the top of the valve cover 52, respectively. The bellows 54 is used to realize the reciprocating motion of the valve stem 51, realize the closing and opening of the isolation valve, and at the same time realize the isolation between the internal pipeline of this sample extraction, storage and transfer device and the external atmospheric environment.

[0025] See Figures 2-3 The first cam 3 and the second cam 4 are sleeved on the front and rear sides of the rotating shaft 2, and the first cam 3 and the second cam 4 respectively abut against the top of the valve stem 51. The rotating shaft 2 is driven to rotate by the driving mechanism 8. When the rotating shaft 2 rotates, it drives the first cam 3 and the second cam 4 to rotate, thereby driving the valve stem 51 of the first isolation valve 5 and the second isolation valve 6 to move up and down synchronously, controlling the connection or disconnection of the first connecting port 56 and the second connecting port 57. Preferably, the driving mechanism 8 is a handle rocker arm, and it is located outside the housing 1.

[0026] In use, the second port of the first isolation valve 5 is connected to the production test equipment that requires sample collection; a sample storage tube 7 is provided between the first port of the first isolation valve 5 and the first port of the second isolation valve 6, and the second port of the second isolation valve 6 is connected to a vacuum pump (not shown). The sample storage tube 7 is generally U-shaped and is located on the outside of the box 1.

[0027] When sampling is required, rotating shaft 2 causes the valve stem to disengage from the first connecting port 56 under the elastic force of the bellows, opening the vacuum equipment and removing residual air and other impurities from the sample storage tube 7. Then, the connecting valve (not shown) between the production test equipment requiring sample collection and the first isolation valve 5 is opened. The gas path in the sample area is: second connecting port of the first isolation valve 5, first connecting port of the first isolation valve 5, sample storage tube 7, first connecting port of the second isolation valve 6, second connecting port of the second isolation valve 6, and vacuum equipment. Due to the continuous operation of the vacuum equipment, the sample remains in the sample storage tube 7. After a period of time, rotating shaft 2 causes the valve stem to close the first connecting ports 56 of both isolation valves. At this point, the sample is retained in the sample storage tube 7, completing the sampling process.

[0028] Further, see Figure 5 To prevent the rotating shaft 2 from jumping or being accidentally operated during sampling, the sample extraction, storage, and transfer device is also equipped with a locking structure, including a self-pin plunger 10 and a locking plate 11. The locking plate 11 is sleeved on the rotating shaft 2 and fixed to it, and is located inside the housing 1. The locking plate 11 is also provided with a locking hole 111. A first positioning hole is provided on the wall of the housing 1. When the far rest point of the first cam 3 and the second cam 4 contacts the top of the valve stem, the valve stem closes the first communication port. The first positioning hole and the locking hole coincide on the axis. The self-pin plunger 10 ( Figure 5 (As shown by the dashed line) passes through the first positioning hole and the locking hole, thereby preventing the rotating shaft 2 from rotating further. A second positioning hole can also be provided on the wall of the housing 1, so that when the near-repose points of the first cam 3 and the second cam 4 contact the top of the valve stem (…), Figure 5 (As shown in the diagram), the second positioning hole coincides with the axis of the locking hole. The self-pin plunger 10 passes through the second positioning hole and the locking hole, thereby preventing the rotating shaft 2 from rotating further and ensuring smooth sample flow. The diameters of the first and second positioning holes are the same as the diameter of the self-pin plunger 10, thereby preventing shaking.

[0029] Furthermore, to record the number of samplings, a counter 9 is installed inside the housing 1. This counter is a trigger-type counter; when the far-end point of the first cam 3 or the second cam 4 triggers the counter 9, one count is completed. Alternatively, when the locking hole of the locking plate 11 coincides with the axis of the first or second positioning hole, its edge triggers the counter 9, completing one count. Preferably, the counter can also be a pull-type counter. The locking plate 11 and the pull rod of the pull-type counter are connected by a spring. A full rotation of the locking plate 11 pulls the pull rod of the pull-type counter once, completing one count.

[0030] In this invention, the main mechanisms, such as the isolation valve, cam, and rotating shaft, are located inside the housing 1, and each has a sample storage tube 7. The only externally exposed interface of the housing 1 is the second connection port of the first isolation valve 5 and the second isolation valve 6. The overall structure of the sample extraction, storage, and transport device is compact, facilitating quick connection and disassembly with production and testing equipment requiring sample collection, without the need for any tools. When the sampling valve is closed, a locking mechanism prevents sample loss due to accidental operation or vibration during transport. Furthermore, the isolation valve has a multi-layered sealing structure, can withstand dusty environments, and exhibits excellent sealing performance; and a counter can be used to count the sampling process, facilitating personnel to track the number of samplings.

[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sample extraction, storage, and transfer device, characterized in that, Includes a box body (1), inside which are provided a rotating shaft (2), a first cam (3), a second cam (4), a first isolation valve (5), and a second isolation valve (6). The first isolation valve (5) and the second isolation valve (6) include a valve stem (51), a valve cover (52), a valve seat (53), and a bellows (54); the valve cover (52) covers the valve seat (53), the valve stem (51) extends through the through hole on the valve cover (52) into the valve seat (53), the valve seat (53) has a first connecting port (56) at the bottom and a second connecting port (57) on the side wall, and the valve stem (51) is used to close the first connecting port (56); the top of the valve stem (51) is provided with a flange (511), the bellows (54) is sleeved on the valve stem (51), and both ends are connected to the bottom of the flange (511) and the top of the valve cover (52) respectively; the bellows (54) is used to realize the reciprocating motion of the valve stem (51); a sample storage tube (7) is provided between the first connecting port of the first isolation valve (5) and the first connecting port of the second isolation valve (6) in the pipeline. The first cam (3) and the second cam (4) are sleeved on the front and rear sides of the rotating shaft (2), and the first cam (3) and the second cam (4) respectively abut against the top of the valve stem (51). The rotating shaft (2) is driven to rotate by the drive mechanism (8).

2. The sample extraction, storage, and transport device according to claim 1, characterized in that, The drive mechanism (8) is a handle rocker arm and is located outside the housing (1).

3. The sample extraction, storage, and transport device according to claim 1, characterized in that, The valve stem (51) has multiple sealing rings (58) arranged around its front end, and a sealing gasket (55) is fixed on the front end face of the valve stem (51).

4. The sample extraction, storage, and transport device according to claim 1, characterized in that, The sample extraction, storage and transfer device also includes a self-pinning plunger (10) and a locking plate (11). The locking plate (11) is sleeved on the rotating shaft (2) and fixed to the rotating shaft (2), and is located inside the box body (1). The locking plate (11) is also provided with a locking hole (111). The wall of the box body (1) is provided with a positioning hole. The self-pinning plunger (10) can pass through the positioning hole and the locking hole (111) to realize the locking function.

5. The sample extraction, storage, and transport device according to claim 4, characterized in that, When the far or near rest point of the first cam (3) and the second cam (4) contacts the top of the valve stem, the positioning hole and the locking hole axis coincide.

6. The sample extraction, storage, and transport device according to claim 4, characterized in that, The positioning hole includes a first positioning hole and a second positioning hole. When the far end point of the first cam (3) and the second cam (4) contacts the top of the valve stem, the first positioning hole coincides with the axis of the locking hole. When the near end point of the first cam (3) and the second cam (4) contacts the top of the valve stem, the second positioning hole coincides with the axis of the locking hole.

7. The sample extraction, storage, and transport device according to claim 1, characterized in that, A sample storage tube (7) is provided between the first isolation valve (5) and the second isolation valve (6).

8. The sample extraction, storage, and transport device according to claim 1, characterized in that, The sample extraction, storage and transfer device also includes a counter (9), which is located inside the box (1). The counter is a trigger counter, and when the far rest point of the first cam (3) or the second cam (4) triggers the counter (9), a count is completed.

9. The sample extraction, storage, and transport device according to claim 4 or 5, characterized in that, The sample extraction, storage and transfer device also includes a counter (9), which is located inside the box (1). The counter is a trigger counter. When the locking hole (111) coincides with the axis of the positioning hole, the edge of the locking plate (11) triggers the counter (9) to complete one count. Alternatively, the counter is a pull counter. The locking plate (11) and the pull rod of the pull counter are connected by a spring. When the locking plate (11) rotates one revolution, the pull rod of the pull counter is pulled once to complete one count.

10. The sample extraction, storage, and transport device according to claim 6, characterized in that, The sample extraction, storage and transfer device also includes a counter (9), which is located inside the box (1). The counter is a trigger counter. When the locking hole (111) coincides with the axis of the first positioning hole or the second positioning hole, the edge of the locking plate (11) triggers the counter (9) to complete one count.

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