CN220231063U

CN220231063U - Pipeline sampling valve

Info

Publication number: CN220231063U
Application number: CN202321789966.9U
Authority: CN
Inventors: 杨秀红; 张雷
Original assignee: Gongheng Valve Shanghai Co ltd
Current assignee: Gongheng Valve Shanghai Co ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2023-12-22
Anticipated expiration: 2033-07-10

Abstract

The application relates to the technical field of valves, in particular to a pipeline sampling valve. The pipeline sampling valve comprises a valve body, an upper valve cover and a sampling bottle are respectively arranged on two sides of the valve body along the medium circulation direction, a hand wheel is arranged on one end of the upper valve cover, which is far away from the valve body, in a sliding manner along the vertical direction, a valve rod is arranged on the hand wheel in a penetrating manner, the valve rod is relatively fixed with the hand wheel, a medium outflow channel is arranged at the inner bottom of the valve body, the end part of the medium outflow channel is communicated with the bottle mouth of the sampling bottle, and the end part of the valve rod penetrates through the valve body, then is inserted into the medium outflow channel and seals the medium outflow channel. In the sampling process of the pipeline sampling valve, the valve rod is lifted up and down and does not rotate, so that friction between the valve core and the valve seat is avoided, the service life of the valve seat is prolonged, and the pipeline sampling valve is convenient to use.

Description

Pipeline sampling valve

Technical Field

The application relates to the technical field of valves, in particular to a pipeline sampling valve.

Background

A line sampling valve is a valve for taking a sample of a medium in a pipeline or device for applications where chemical analysis of the medium sample is often required. According to the working principle or performance difference during sampling, the sampling valves are mainly divided into three types, including a duplex opening valve, a flange clamping valve and a sampling valve with a heat-insulating jacket. The principle of the flange clamp valve is that the cone body at the top of the valve rod and the cone hole of the valve seat are used for sealing, and the valve rod is separated from the cone hole in sampling, so that a medium in the cone hole can flow into an external sampling vessel.

The sampling valve in the prior art mainly comprises a valve body, a valve core, a valve rod, a valve seat and a sampling bottle, when sampling is carried out, the valve rod is rotated by a hand wheel to lift the valve rod, so that the valve rod is separated from a taper hole on the valve seat, a medium flows into the external sampling bottle, and after sampling is finished, the hand wheel is rotated again to enable the valve rod to descend and reseal the taper hole.

However, in the sampling process, the valve rod can rotate, so that friction is generated between the valve core and the valve seat, and the service life of the sampling valve is greatly reduced.

Disclosure of Invention

In order to improve the defect that a valve rod of a sampling valve can rotate in the sampling process, so that friction is generated between a valve core and a valve seat, and the service life of the valve seat is greatly reduced, the application provides a pipeline sampling valve.

In the sampling process of the pipeline sampling valve, the valve rod is lifted up and down and does not rotate, so that friction between the valve core and the valve seat is avoided, the service life of the sampling valve is prolonged, and the sampling valve is convenient to use.

The application provides a pipeline sampling valve adopts following technical scheme:

the utility model provides a pipeline sampling valve, includes the valve body, the valve body is provided with valve gap and sample bottle respectively along the both sides of medium circulation direction, the one end that the valve body was kept away from to the valve gap is provided with the hand wheel along vertical direction slip, wear to be equipped with the valve rod on the hand wheel, just the valve rod with the hand wheel is fixed relatively, medium outflow passageway has been seted up to the bottom in the valve body, the tip of medium outflow passageway with sample bottle bottleneck intercommunication, insert in the medium outflow passageway and seal the medium outflow passageway after the tip of valve rod runs through the valve body.

Optionally, the hand wheel inside wall is provided with latch one, the upper valve gap lateral wall is provided with latch two, the hand wheel with the cooperation of upper valve gap through latch one and latch two realizes tooth card formula connection.

Optionally, dodge the groove has been seted up to the one end that the valve body was kept away from to the hand wheel, the tip of keeping away from the valve body of valve rod runs through dodge the groove tank bottom back protrusion in dodging the inslot, dodge the inslot and be provided with the backing ring one, backing ring one set is established outside the valve rod, valve rod tip screw thread is provided with tightly decides the nut, tightly decide the nut with backing ring one butt in dodging inslot diapire, one side that the hand wheel is close to the valve body still is provided with the backing ring two, backing ring two cover is established outside the valve rod, the valve rod is close to the position of backing ring two and is formed with the shoulder, the both ends of backing ring two are offset with shoulder and hand wheel respectively.

Optionally, the valve body is provided with valve gap connecting seat and sample bottle respectively along the both sides of medium circulation direction, it is in to go up the fixed setting of valve gap connecting seat one end of keeping away from the valve body, the one end that the valve body was kept away from to the sample bottle connects the connecting seat is provided with the sample bottle and connects, the sample bottle connects the one end that the sample bottle connects the connecting seat and can dismantle with the sample bottle bottleneck and be connected.

Optionally, the sampling bottle connects the lateral wall and has seted up the exhaust hole, exhaust hole and sampling bottle intercommunication.

Optionally, the one end that the valve body was kept away from to the upper valve gap connecting seat is provided with the gland, the gland has been seted up to the one end that the valve body was kept away from to the gland, gland and packing all set up with the valve rod is coaxial, the valve rod runs through packing and gland diapire in proper order, be provided with the packing group in the packing chamber, the packing group fills and sets up between valve rod and packing chamber, the one end that the valve body was kept away from to the gland is provided with the gland, the gland will the packing cavity seals, just the valve rod runs through the gland sets up.

Optionally, a groove one is formed in the outer side wall of the gland, a gland sealing ring is arranged in the groove one, and one side wall of the gland sealing ring is propped against the upper valve cover connecting seat and is used for sealing a gap between the upper valve cover connecting seat and the gland; the gland is characterized in that a second groove is formed in the inner side wall of the gland, a valve rod sealing ring is arranged in the second groove, one side wall of the valve rod sealing ring abuts against the outer side wall of the valve rod, and the valve rod sealing ring is used for sealing a gap between the valve rod and the gland.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a pipeline sampling valve according to an embodiment of the present application;

FIG. 2 is a cross-sectional view of a line sampling valve in an embodiment of the present application;

fig. 3 is an enlarged view of a portion a in fig. 2;

fig. 4 is an enlarged view of a portion B in fig. 2.

Reference numerals: 1. a valve body; 2. a connecting flange; 3. an upper valve cover; 4. sampling bottle; 5. an upper valve cover connecting seat; 6. a sampling bottle joint connecting seat; 7. a sampling bottle joint; 8. a hand wheel; 9. a valve stem; 10. a valve core; 11. a gland; 12. a filler cavity; 13. a filler group; 14. a packing gland; 15. pressing a sealing ring; 16. a valve stem seal ring; 17. an avoidance groove; 18. a backing ring I; 19. a backing ring II; 20. shoulder clamping; 21. an exhaust hole; 22. and (5) tightening the nut.

Detailed Description

In order to make the purposes, technical solutions and technical effects of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below. It is noted that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be made by a person skilled in the art without the need for inventive labour, based on the described embodiments of the present application fall within the scope of protection of the present application.

The embodiment of the application discloses pipeline sampling valve, refer to fig. 1, pipeline sampling valve includes valve body 1, flange 2 is installed along the both ends of medium circulation direction to valve body 1, and valve body 1 is provided with valve gap 3 and sample bottle 4 respectively along the both sides of medium circulation direction, and go up valve gap 3 and the coaxial setting of sample bottle 4, for the convenience of description, one side of valve gap 3 is "last" is installed in the definition, and one side of sample bottle 4 is "down" is installed in the definition.

Referring to fig. 1 and 2, an upper valve cover connecting seat 5 is integrally formed at the upper end of the middle part of the valve body 1, and a sampling bottle connector connecting seat 6 is integrally formed at the lower end of the middle part of the valve body 1. The valve body 1 is connected with the upper valve cover 3 through an upper valve cover connecting seat 5, and the lower end of the upper valve cover 3 is fixedly connected with the upper end of the upper valve cover connecting seat 5 through bolts. The valve body 1 is connected with the sampling bottle 4 through a sampling bottle connector 7, the upper end of the sampling bottle connector 7 is fixedly connected with the lower end of the sampling bottle connector connecting seat 6, the lower end of the sampling bottle connector 7 is detachably connected with the bottle mouth of the sampling bottle 4, and in the embodiment, the detachable connection mode of the sampling bottle 4 and the sampling bottle connector 7 is threaded connection.

Referring to fig. 1, 2 and 4, the upper valve cap connecting seat 5 is provided with a first through hole in a penetrating manner in a vertical direction, the sampling bottle connector connecting seat 6 is provided with a second through hole (medium outflow passage) in a penetrating manner in a vertical direction, and the sampling bottle connector 7 is provided with a third through hole in a penetrating manner in a vertical direction, wherein the first through hole, the second through hole and the third through hole are coaxially arranged. The lower end of the first through hole and the upper end of the second through hole are communicated with the pipeline in the valve body 1, the lower end of the second through hole is communicated with the upper end of the third through hole, and the lower end of the third through hole is communicated with the sampling bottle 4.

Referring to fig. 1, 2 and 3, the upper valve cover 3 is of a tubular structure with openings at the upper end and the lower end, a hand wheel 8 is slidably arranged at the upper end of the upper valve cover 3, a valve rod 9 is arranged in the middle of the hand wheel 8 in a penetrating manner, the valve rod 9 sequentially penetrates through the upper valve cover 3, the first through hole and the inner pipeline of the valve body 1 from the hand wheel 8, a valve core 10 is arranged at the lower end of the valve rod 9, and the valve core 10 is inserted into the opening of the second through hole so as to realize the sealing of the second through hole. For easy insertion, the lower end of the valve core 10 is conical, and the end of the second through hole close to the valve body 1 is conical so as to be matched with the end of the valve core 10. In addition, the valve rod 9 can vertically slide in the up-down direction, thereby realizing the opening and closing of the second through hole.

Referring to fig. 1, 2 and 3, the upper end of the through hole one of the upper valve cover connecting seat 5 is provided with a pressing cover 11, in this embodiment, the pressing cover 11 is in threaded fit with the inner wall of the upper end one of the through hole, the middle part of the upper end of the pressing cover 11 is provided with a packing cavity 12, the bottom in the packing cavity 12 is provided with a through hole four, the packing cavity 12 and the through hole four are coaxially arranged with the through hole one, and the valve rod 9 sequentially penetrates through the packing cavity 12 and the through hole four. The packing set 13 is filled in the packing cavity 12 at the peripheral side of the valve rod 9, the packing set 13 is a soft material for sealing the periphery of the valve rod 9, the type of the packing set 13 can be selected by a person skilled in the art according to the need, and the fluorine packing set is adopted in the embodiment. The upper end of the gland 11 is provided with a gland 14, the lower end of the gland 14 is inserted into the gland 12 and presses the packing group 13, and the middle part of the gland 14 is provided with a through hole five for the valve rod 9 to pass through from top to bottom. In this embodiment, the packing gland 14 is bolted to the gland 11. The outer side wall of the lower end of the pressing cover 11 is provided with a groove I, a pressing cover sealing ring 15 is arranged in the groove I, one side wall of the pressing cover sealing ring 15 is propped against the inner side wall of the through hole of the upper valve cover connecting seat 5, and is used for sealing a gap between the upper valve cover connecting seat 5 and the pressing cover 11; the fourth inner side wall of the through hole of the pressing cover 11 is also provided with a second groove, a valve rod sealing ring 16 is arranged in the second groove, one side wall of the valve rod sealing ring 16 is propped against the outer side wall of the valve rod 9, and the second groove is used for sealing a gap between the valve rod 9 and the pressing cover 11.

Referring to fig. 1, 2 and 3, the inner side wall of the hand wheel 8 is provided with a first latch, the outer side wall of the upper valve cover 3 is provided with a second latch, and the toothed clamping connection of the hand wheel 8 and the upper valve cover 3 is realized through the cooperation of the first latch and the second latch. The upper end of the hand wheel 8 is provided with an avoidance groove 17, the inner bottom wall of the avoidance groove 17 is provided with a through hole five through which the valve rod 9 penetrates, and the upper end of the valve rod 9 protrudes out of the through hole five and is flush with the upper wall of the hand wheel 8. The avoidance groove 17 is internally provided with a backing ring I18, the backing ring I18 is sleeved outside the valve rod 9, one end of the valve rod 9 positioned in the avoidance groove 17 is provided with a tightening nut 22 in a threaded manner, the lower end of the tightening nut 22 abuts against the upper end of the backing ring I18, and the lower end of the backing ring I18 abuts against the inner bottom wall of the avoidance groove 17. The hand wheel 8 is located the lower extreme of through-hole five and still is provided with the backing ring two 19, and the backing ring two 19 cover is established outside valve rod 9, and valve rod 9 is close to the position of backing ring two 19 and is formed with the shoulder 20, and the both ends of backing ring two 19 offset with shoulder 20 and hand wheel 8 respectively. The relative fixation of the hand wheel 8 and the valve rod 9 is realized by the arrangement. So set up, when taking a sample, upwards carry handle wheel 8, hand wheel 8 drives valve rod 9 upward movement to make case 10 and through-hole second separation, medium in the valve body 1 flows into in the sample bottle 4 through-hole second, through-hole third in proper order, accomplishes the sample, then presses down hand wheel 8, and hand wheel 8 drives valve rod 9 downward movement, and case 10 seals through-hole second again, then takes off sample bottle 4 can.

Referring to fig. 2, the side wall of the sampling bottle connector 7 is further provided with an exhaust hole 21, the exhaust hole 21 is communicated with the inside of the sampling bottle 4, so that the pressure can be discharged through the exhaust hole 21 in the sampling process, and pressureless sampling is realized.

In other embodiments, the sampling bottle 4 is made of transparent materials, the side wall of the sampling bottle 4 is also provided with scales, and the inflow of the medium can be observed at any time, so that the quantitative requirement on the sampling amount is realized.

The implementation principle of the pipeline sampling valve in the embodiment of the application is as follows: during sampling, the handle wheel 8 is lifted upwards, the hand wheel 8 drives the valve rod 9 to move upwards, so that the valve core 10 is separated from the through hole II, a medium in the valve body 1 flows into the sampling bottle 4 through the through hole II and the through hole III in sequence, sampling is completed, then the hand wheel 8 is pressed downwards, the hand wheel 8 drives the valve rod 9 to move downwards, and the valve core 10 seals the through hole II again.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a pipeline sampling valve, its characterized in that, includes valve body (1), both sides of valve body (1) along the medium circulation direction are provided with valve gap (3) and sample bottle (4) respectively, the one end that valve body (1) was kept away from to valve gap (3) is provided with hand wheel (8) along vertical direction slip, wear to be equipped with valve rod (9) on hand wheel (8), just valve rod (9) with hand wheel (8) are fixed relatively, medium outflow passageway has been seted up in valve body (1), the tip of medium outflow passageway with sample bottle (4) bottleneck intercommunication, insert in the medium outflow passageway and seal the medium outflow passageway after the tip of valve rod (9) runs through valve body (1).

2. The pipeline sampling valve according to claim 1, wherein the inner side wall of the hand wheel (8) is provided with a first latch, the outer side wall of the upper valve cover (3) is provided with a second latch, and the hand wheel (8) and the upper valve cover (3) are connected in a tooth-clamping mode through cooperation of the first latch and the second latch.

3. The pipeline sampling valve according to claim 1 or 2, characterized in that an avoidance groove (17) is formed in one end, far away from the valve body (1), of the hand wheel (8), the end, far away from the valve body (1), of the valve rod (9) penetrates through the groove bottom of the avoidance groove (17) and then protrudes into the avoidance groove (17), a backing ring I (18) is arranged in the avoidance groove (17), the backing ring I (18) is sleeved outside the valve rod (9), a fastening nut (22) is arranged on the end thread of the valve rod (9), the fastening nut (22) enables the backing ring I (18) to be abutted to the inner bottom wall of the avoidance groove (17), a backing ring II (19) is further arranged on one side, close to the valve body (1), of the hand wheel (8) and is sleeved outside the valve rod (9), a clamping shoulder (20) is formed at the position, close to the backing ring II (19), and two ends of the backing ring II (19) are respectively abutted to the clamping shoulder (20) and the hand wheel (8).

4. The pipeline sampling valve according to claim 1, wherein an upper valve cover connecting seat (5) and a sampling bottle connector connecting seat (6) are respectively arranged on two sides of the valve body (1) along the medium circulation direction, the upper valve cover (3) is fixedly arranged at one end, far away from the valve body (1), of the upper valve cover connecting seat (5), a sampling bottle connector (7) is arranged at one end, far away from the valve body (1), of the sampling bottle connector connecting seat (6), and one end, far away from the sampling bottle connector connecting seat (6), of the sampling bottle connector (7) is detachably connected with a bottle opening of the sampling bottle (4).

5. The pipeline sampling valve according to claim 4, characterized in that the side wall of the sampling bottle joint (7) is provided with an exhaust hole (21), and the exhaust hole (21) is communicated with the sampling bottle (4).

6. The pipeline sampling valve according to claim 4, characterized in that one end of the upper valve cover connecting seat (5) far away from the valve body (1) is provided with a gland (11), one end of the gland (11) far away from the valve body (1) is provided with a packing cavity (12), the gland (11) and the packing cavity (12) are both coaxially arranged with the valve rod (9), the valve rod (9) sequentially penetrates through the packing cavity (12) and the bottom wall of the gland (11), a packing group (13) is arranged in the packing cavity (12), packing is arranged between the valve rod (9) and the packing cavity (12) in a filling mode, one end of the gland (11) far away from the valve body (1) is provided with a packing gland (14), the packing cavity (12) is closed by the packing gland (14), and the valve rod (9) is arranged through the packing gland (14).

7. The pipeline sampling valve according to claim 6, wherein a groove one is formed in the outer side wall of the gland (11), a gland sealing ring (15) is arranged in the groove one, and one side wall of the gland sealing ring (15) is propped against the upper valve cover connecting seat (5) and is used for sealing a gap between the upper valve cover connecting seat (5) and the gland (11); the novel valve is characterized in that a second groove is formed in the inner side wall of the gland (11), a valve rod sealing ring (16) is arranged in the second groove, one side wall of the valve rod sealing ring (16) abuts against the outer side wall of the valve rod (9) and is used for sealing a gap between the valve rod (9) and the gland (11).