CN215296826U - High-precision heat-preservation micro-sampling valve - Google Patents
High-precision heat-preservation micro-sampling valve Download PDFInfo
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- CN215296826U CN215296826U CN202121126203.7U CN202121126203U CN215296826U CN 215296826 U CN215296826 U CN 215296826U CN 202121126203 U CN202121126203 U CN 202121126203U CN 215296826 U CN215296826 U CN 215296826U
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Abstract
The utility model discloses a high accuracy heat preservation micro-sampling valve relates to a valve, including the main valve pipe, be equipped with the sample valve pipe in the main valve pipe, be provided with the decompression regulation pole that the bottom can shutoff its lower part thinner part top in the thicker part in sample valve pipe upper portion, the top of decompression regulation pole with establish in the main valve outside of tubes and can drive it and carry out linear reciprocating motion and seal the drive structure connection at sample valve pipe top, the sampling hole has been seted up at the middle part of the thicker part in sample valve pipe upper portion, evenly set up on the outer wall of decompression regulation pole lower part and supply the medium circulation and can step down the decompression adjustment tank of speed reduction to the medium; when the bottom end of the pressure reduction adjusting rod plugs the top of the thinner part of the lower part of the sampling valve pipe, the lower part of the pressure reduction adjusting rod is positioned below the sampling hole, and the pressure reduction adjusting groove can be communicated with the sampling hole in the process that the pressure reduction adjusting rod is driven by the driving structure to move upwards; the embodiment can effectively reduce the pressure and flow rate of the sample during high-pressure and high-speed medium sampling.
Description
Technical Field
The utility model relates to a valve especially relates to a high accuracy heat preservation micro-sampling valve.
Background
The existing sampling valve basically adopts external sampling, and an external flow passage is relatively long, so that waste of valuable media is caused; the external medium easy to crystallize is easy to crystallize due to the reduction of temperature, the fluidity of the medium is poor, and even the flowing of the medium stops due to crystallization, so that normal sampling cannot be carried out;
the existing sampling block valve mainly adopts a common needle valve, the flow control precision of the valve is not high, a multi-stage pressure reduction profile structure is not designed for a high-pressure medium, a high-pressure injection condition can exist during sampling, and the safety cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a high accuracy heat preservation micro-sampling valve to there is high-pressure injection's technical problem in the sample intercepting valve among the solution prior art.
The utility model discloses a realize through following technical scheme:
a high-precision heat-preservation micro-sampling valve comprises a main valve pipe, wherein a sampling valve pipe with a main body outside the main body at two ends inside the main valve pipe is arranged in the main valve pipe, an inner cavity of the sampling valve pipe is of a cylindrical cavity structure with a thick upper part and a thin lower part, a pressure reduction adjusting rod with a bottom end capable of plugging the top of the thin lower part is arranged in the thick upper part of the sampling valve pipe, the top of the pressure reduction adjusting rod is connected with a driving structure which is arranged outside the main valve pipe and can drive the pressure reduction adjusting rod to perform linear reciprocating motion and seal the top of the sampling valve pipe, a sampling hole is formed in the middle of the thick upper part of the sampling valve pipe, and pressure reduction adjusting grooves for medium circulation and pressure reduction and speed reduction of the medium are uniformly formed in the outer wall of the lower part of the pressure reduction adjusting rod; when the bottom end of the pressure reduction adjusting rod plugs the top of the thinner part of the lower part of the sampling valve pipe, the lower part of the pressure reduction adjusting rod is positioned below the sampling hole, and the pressure reduction adjusting groove can be communicated with the sampling hole in the process that the pressure reduction adjusting rod is driven by the driving structure to move upwards.
Further, the axis of the sampling valve pipe is perpendicular to and intersects with the axis of the main valve pipe.
Furthermore, the sampling hole is positioned in the middle of the inner cavity of the main valve pipe.
Further, when the bottom end of the pressure reduction adjusting rod plugs the top of the thinner part of the lower part of the sampling valve pipe, the outer diameter of the lower part of the pressure reduction adjusting rod is the same as the inner diameter of the sampling valve pipe on the outer side of the pressure reduction adjusting rod.
Furthermore, the thicker upper part and the thinner lower part of the sampling valve pipe are divided into an upper valve pipe and a lower valve pipe, the top end of the lower valve pipe is inserted into the bottom end of the upper valve pipe and is in threaded connection, and the top end of the upper valve pipe and the bottom end of the lower valve pipe respectively penetrate through the corresponding side wall of the main valve pipe and are arranged on the outer side of the main valve pipe.
Further, drive structure specifically comprises valve rod, screw thread drive block, packing box, packing pressure cover and hand wheel, the valve rod sets up in upper portion valve pipe and is connected with the top of decompression regulation pole, the middle part at the valve rod is established to the screw thread drive block cover, just the outer wall of screw thread drive block and the inner wall threaded connection of upper portion valve pipe, the cover is equipped with the packing box on the part that is in upper portion valve pipe top in the valve rod, it presses the cover to still overlap the packing that is equipped with inner wall and upper portion valve pipe top outer wall threaded connection on the valve rod, the top and the hand wheel fixed connection of valve rod.
Furthermore, the outer wall of the bottom end of the lower valve pipe is in threaded connection with a sealing cap capable of sealing the bottom end of the lower valve pipe.
Further, the outside of main valve pipe still overlaps and is equipped with the insulation cover, be connected with feed liquor pipe and drain pipe on the insulation cover.
Further, flanges are respectively installed on two ends of the main valve pipe.
Further, the thread driving block and the valve rod are of an integrated structure, and the bottom end of the valve rod is connected with the top end of the pressure reduction adjusting rod through a connecting sleeve.
Compared with the prior art, the utility model has the following advantages:
the utility model provides a high accuracy heat preservation micro-sampling valve, through adopting the setting of decompression adjusting lever, can make the medium effectively decompress and slow down when flowing out, avoided the defect of traditional equipment; through the setting of insulation cover, can effectively maintain the temperature of valve body, avoid the coking.
Drawings
FIG. 1 is a schematic structural view of a high-precision thermal insulation micro-sampling valve according to an embodiment.
Fig. 2 is a schematic view of a pressure-reducing regulating rod in the embodiment.
In the figure: 1. a main valve tube; 2. a sampling valve tube; 3. a pressure reducing adjusting rod; 4. a sampling hole; 5. a pressure reduction regulation tank; 6. an upper valve tube; 7. a lower valve tube; 8. a valve stem; 9. a screw driving block; 10. a stuffing box; 11. pressing and sleeving the filler; 12. a hand wheel; 13. a sealing cap; 14. a thermal insulation sleeve; 15. a liquid inlet pipe; 16. a liquid outlet pipe; 17. and (4) a flange.
Detailed Description
The technical solution of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Examples
With reference to fig. 1 and 2, in this embodiment, a high-precision heat-preservation micro-sampling valve is provided, which includes a main valve pipe 1, two ends of the main valve pipe 1 are respectively provided with a flange 17 for connecting with an external pipeline, and a sampling valve pipe 2 having an axis perpendicular to and intersecting with the main valve pipe 1 is disposed in the middle of the main valve pipe 1, in this embodiment, the sampling valve pipe 2 is specifically composed of an upper valve pipe 6 and a lower valve pipe 7, the top end of the lower valve pipe 7 penetrates through the top end of the upper valve pipe 6 and is in threaded connection, and the outer end gap of the upper valve pipe and the lower valve pipe is sealed by welding, wherein the inner diameter of the upper valve pipe 6 is larger than the inner diameter of the lower valve pipe 7, and the top end of the upper valve pipe 6 and the bottom end of the lower valve pipe 7 respectively penetrate through the corresponding side walls of the main valve pipe 1 and are disposed outside the main valve pipe 1, and the penetration points are respectively welded and sealed;
with reference to fig. 1, a pressure reducing adjusting rod 3 is arranged in the upper valve pipe 6, and the bottom end of the pressure reducing adjusting rod 3 can seal the top of the lower valve pipe 7, so as to achieve the purpose of blocking the medium circulation, and in order to achieve the purpose, the bottom end of the pressure reducing adjusting rod 3 and the top of the lower valve pipe 7 are respectively processed into sealing surfaces, so as to achieve the effect;
in order to realize that a medium can freely flow into the lower valve pipe 7 or be blocked at the top of the lower valve pipe 7, the medium needs to enter the upper valve pipe 6 and enter the lower valve pipe 7 after passing through the pressure reduction adjusting rod 3 or be blocked at the top of the lower valve pipe 7, in the embodiment, firstly, sampling holes 4 are formed in the middle of the upper valve pipe 6, the number of the sampling holes 4 can be set according to needs, in the example, two sampling holes are formed in combination with the attached drawing, and the sampling holes 4 are positioned in the middle of the inner cavity of the main valve pipe 1 in combination with the attached drawing;
meanwhile, in order to reduce the flow velocity and pressure when the medium flows into the upper valve pipe 6 and flows downwards into the lower valve pipe 7, in this embodiment, the outer wall of the lower part of the pressure reduction adjusting rod 3 is provided with the pressure reduction adjusting groove 5, and the pressure reduction adjusting groove 5 can be set to be various, so that the purpose of pressure reduction and speed regulation can be met only, for example, referring to fig. 2, in this embodiment, the pressure reduction adjusting groove 5 is specifically formed by connecting grooves in a staggered manner, when the medium circulates in the pressure reduction adjusting groove, the medium experiences the situation that the inflow area is suddenly increased and then becomes smaller and larger, and then the flow velocity and pressure of the medium can be effectively adjusted and reduced, so that the purpose of reducing the pressure and flow velocity of the medium is achieved; meanwhile, in order to avoid the defect that the medium can keep a certain flow rate due to the fact that the medium circulates through a gap between the outer wall of the pressure reduction adjusting rod 3 and the inner wall of the upper valve pipe 6, in the embodiment, the outer diameter of the part, where the pressure reduction adjusting groove 5 is located, of the pressure reduction adjusting rod 3 is the same as the inner diameter of the upper valve pipe 6, so that the defect can be effectively avoided (the technical characteristic can be that the pressure reduction adjusting groove is not arranged, the outer diameter of the top, where the pressure reduction adjusting groove 5 is located as a whole, of the pressure reduction adjusting rod can be the same as the inner diameter of the corresponding upper valve pipe 6, and other parts of the pressure reduction adjusting groove can be smaller than the inner diameter of the upper valve pipe 6, so that the medium can circulate conveniently);
next, in order to achieve the medium flowing mainly through the decompression adjustment tank 5, it is satisfied in the present embodiment that: when the bottom end of the pressure reduction adjusting rod 3 closes the top of the lower valve pipe 7, the pressure reduction adjusting groove 5 is positioned below the sampling hole 4, and when the pressure reduction adjusting rod 3 moves upwards, the sampling hole 4 can be communicated with the pressure reduction adjusting groove 5, so that a medium flows into the lower valve pipe 7 through the pressure reduction adjusting groove 5;
in order to realize the up-and-down movement of the pressure reducing adjusting rod 3, in the embodiment, a driving structure is arranged, the driving structure can drive the pressure reducing adjusting rod 3 to perform up-and-down reciprocating linear motion, and can seal the top of the upper valve pipe 6 to prevent a medium from overflowing from the top of the upper valve pipe, the structure of the pressure reducing adjusting rod can be various, and the pressure reducing adjusting rod can meet the requirements; in this embodiment, the driving structure is specifically composed of a valve rod 8, a hand wheel 12, a packing box 10, a packing pressing sleeve 11 and a thread driving block 9, wherein the top end of the pressure-reducing adjusting rod 3 is connected with the valve rod 8 arranged in the upper valve tube 6 through a connecting sleeve, or the connecting sleeve is not used to directly connect the two, but for convenience of installation and manufacture, in this embodiment, the two are connected through the connecting sleeve, the middle part of the valve rod 8 is sleeved with the thread driving block 9, the outer wall of the thread driving block 9 is in threaded connection with the inner wall of the upper valve tube 6, the thread driving block 9 and the valve rod 8 are in an integrated structure in this embodiment, the packing box 10 is arranged between the inner wall of the top end of the upper valve tube 6 and the valve rod 8 therein, and the outer wall of the top end of the upper valve tube 6 is in threaded connection with the inner wall of the packing pressing sleeve 11 sleeved on the valve rod 8, so as to effectively seal a gap between the valve rod 8 and the top end of the upper valve tube 6, the medium is prevented from overflowing, and the top end of the valve rod 8 is connected with the hand wheel 12;
through the setting, drive hand wheel 12, can drive valve rod 8 and rotate, the screw thread drive block 9 on the valve rod 8 of rotation in-process can be relative upper portion valve pipe 6 up-and-down under the effect of external screw thread including, and then drive decompression regulation pole 3 up-and-down through valve rod 8, and then can realize decompression adjustment tank 5 and the intercommunication of thief hole 4 and close and opening or closing of lower part valve pipe 7, when opening, the medium flows out main valve pipe 1 in 5 entering lower part valve pipes 7 of decompression adjustment tank, and flow out in-process by decompression and deceleration, the too big defect of traditional equipment medium flow rate and pressure has been avoided.
Meanwhile, in order to avoid medium coking and the like, the heat insulation sleeve 14 is sleeved on the outer side of the main valve pipe 1, and the heat insulation sleeve 14 is connected with the liquid inlet pipe 15 and the liquid outlet pipe 16, so that hot water and the like can circularly flow, the medium and the like in the hot water can be kept at a constant temperature, and the coking is avoided.
Meanwhile, in order to protect the bottom end of the lower valve tube 7, a sealing cap 13 is sleeved on the lower valve tube so as to seal the bottom end of the lower valve tube 7 when the sample is not taken.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A high-precision heat-preservation micro-sampling valve comprises a main valve pipe (1) and is characterized in that, a sampling valve pipe (2) with a main body outside the main valve pipe (1) at two ends is arranged in the main valve pipe, the inner cavity of the sampling valve pipe (2) is a cylindrical cavity structure with a thick upper part and a thin lower part, a pressure reducing adjusting rod (3) with the bottom end capable of plugging the top of the thin lower part is arranged in the thick upper part of the sampling valve pipe (2), the top of the pressure reducing adjusting rod (3) is connected with a driving structure which is arranged outside the main valve pipe (1) and can drive the main valve pipe to do linear reciprocating motion and seal the top of the sampling valve pipe (2), a sampling hole (4) is arranged in the middle of the thicker part of the upper part of the sampling valve pipe (2), the outer wall of the lower part of the pressure reduction adjusting rod (3) is uniformly provided with pressure reduction adjusting grooves (5) for medium circulation and pressure reduction and speed reduction of the medium; when the bottom end of the pressure reduction adjusting rod (3) plugs the top of the thinner part of the lower part of the sampling valve tube (2), the lower part of the pressure reduction adjusting rod (3) is positioned below the sampling hole (4), and the pressure reduction adjusting groove (5) can be communicated with the sampling hole (4) in the process that the pressure reduction adjusting rod (3) is driven by the driving structure to move upwards; the outer side of the main valve pipe (1) is further sleeved with a heat insulation sleeve (14), and the heat insulation sleeve (14) is connected with a liquid inlet pipe (15) and a liquid outlet pipe (16).
2. A high precision thermal insulating micro-sampling valve according to claim 1, characterized in that the axis of the sampling valve pipe (2) and the axis of the main valve pipe (1) are perpendicular and intersect.
3. A high precision thermal insulating micro-sampling valve according to claim 2, characterized in that the sampling hole (4) is in the middle of the inner cavity of the main valve tube (1).
4. A high precision thermal insulation micro-sampling valve according to any one of claims 1 to 3, characterized in that when the bottom end of the pressure reducing adjusting rod (3) blocks the top of the thinner part of the sampling valve tube (2), the outer diameter of the lower part of the pressure reducing adjusting rod (3) is the same as the inner diameter of the sampling valve tube (2) outside the pressure reducing adjusting rod.
5. The high-precision heat-preservation micro-sampling valve according to claim 4, wherein the thicker upper part and the thinner lower part of the sampling valve pipe (2) are divided into an upper valve pipe (6) and a lower valve pipe (7), the top end of the lower valve pipe (7) is inserted into the bottom end of the upper valve pipe (6) and is in threaded connection, and the top end of the upper valve pipe (6) and the bottom end of the lower valve pipe (7) are respectively arranged outside the main valve pipe (1) through the corresponding side walls of the main valve pipe (1).
6. A high precision thermal insulating micro sample valve according to claim 5, the driving structure is composed of a valve rod (8), a thread driving block (9), a stuffing box (10), a stuffing pressing sleeve (11) and a hand wheel (12), the valve rod (8) is arranged in the upper valve pipe (6) and is connected with the top end of the pressure reducing adjusting rod (3), the thread driving block (9) is sleeved in the middle of the valve rod (8), and the outer wall of the thread driving block (9) is in threaded connection with the inner wall of the upper valve pipe (6), a stuffing box (10) is sleeved on the part of the valve rod (8) positioned in the top end of the upper valve pipe (6), the valve rod (8) is further sleeved with a packing pressing sleeve (11) of which the inner wall is in threaded connection with the outer wall of the top end of the upper valve pipe (6), and the top end of the valve rod (8) is fixedly connected with a hand wheel (12).
7. A high precision thermal insulation micro-sampling valve according to claim 6, characterized in that the outer wall of the bottom end of the lower valve tube (7) is further connected with a sealing cap (13) capable of closing the bottom end thereof by screw thread.
8. A high precision thermal insulating micro-sampling valve according to claim 7, characterized in that flanges (17) are mounted on both ends of the main valve pipe (1).
9. The high-precision heat-preservation micro-sampling valve as claimed in claim 8, wherein the screw driving block (9) and the valve rod (8) are of an integral structure, and the bottom end of the valve rod (8) is connected with the top end of the pressure-reduction adjusting rod (3) through a connecting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121126203.7U CN215296826U (en) | 2021-05-25 | 2021-05-25 | High-precision heat-preservation micro-sampling valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121126203.7U CN215296826U (en) | 2021-05-25 | 2021-05-25 | High-precision heat-preservation micro-sampling valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215296826U true CN215296826U (en) | 2021-12-24 |
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ID=79541988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121126203.7U Active CN215296826U (en) | 2021-05-25 | 2021-05-25 | High-precision heat-preservation micro-sampling valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215296826U (en) |
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2021
- 2021-05-25 CN CN202121126203.7U patent/CN215296826U/en active Active
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Address after: 242700 No. 55, Meilin Avenue, Huangshan Economic Development Zone, Anhui Province Patentee after: Anhui Tunxi High Pressure Valve Co.,Ltd. Address before: 242700 No. 55, Meilin Avenue, Huangshan Economic Development Zone, Anhui Province Patentee before: ANHUI TUNXI HIGH PRESSURE VALVE Co.,Ltd. |