CN212988945U

CN212988945U - Nitrogen purging sampling valve

Info

Publication number: CN212988945U
Application number: CN202022077644.4U
Authority: CN
Inventors: 张秀杰; 赵日新; 庞永萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-04-16
Anticipated expiration: 2030-09-21

Abstract

The utility model relates to a sample technical field specifically is a nitrogen gas sweeps sample valve, which comprises a valve body, the level is provided with the circulation pipeline in the valve body, the valve body middle part is provided with the sample pipeline perpendicularly, valve body below fixed mounting has the connector, the connector bottom is provided with the sample buckle, the valve body top can be dismantled through the bolt and be connected with the valve gap, the inside valve rod that is provided with of sample pipeline, valve rod bottom and sample pipeline contact are connected, the valve rod top is connected with automatic resilience handle, the inside automatic resilient mounting that is provided with of automatic resilience handle, the valve body both sides are connected with the valve body flange, the inside nitrogen gas passageway that is provided with of valve rod, valve gap one side is provided with the nitrogen gas pipe, nitrogen gas. This technical characteristics is stable inner structure, and convenient personnel's operational mode has improved the security of sampling valve greatly.

Description

Nitrogen purging sampling valve

Technical Field

The utility model relates to a sample technical field specifically is a nitrogen gas sweeps sample valve.

Background

In the related industries such as petrochemical industry, fine chemical industry, food and pesticide, the liquid phase which is easy to volatilize, has pungent smell and toxicity or can not be contacted with air needs to be sampled and detected, and the closed sampler and the sampling valve in the related industries have the advantages of complex structure, large occupied area, short service life and more easily-damaged parts. The complicated structure brings inconvenience to the operation of sampling personnel, and the frequent damage of vulnerable parts easily leads to the leakage of sampling valve, brings hidden danger for the normal production of enterprise and user's safety.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a nitrogen gas sweeps sample valve to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a nitrogen gas sweeps sample valve, includes the valve body, the level is provided with the circulation pipeline in the valve body, the valve body middle part is provided with the sample pipeline perpendicularly, valve body below fixed mounting has the connector, the connector bottom is provided with the sample buckle, the valve body top can be dismantled through the bolt and be connected with the valve gap, the inside valve rod that is provided with of sample pipeline, valve rod bottom is connected with the sample pipeline contact, the valve rod top is connected with automatic resilience handle, the inside automatic resilient means that is provided with of automatic resilience handle, the valve rod is provided with the filler with the junction of valve gap, valve body both sides are connected with the valve body flange, the inside nitrogen gas passageway that is provided with of valve rod, the nitrogen gas passageway link up the setting of valve rod bottom, valve gap one side.

As a further aspect of the present invention: the valve gap external connection has nitrogen gas relief pressure valve and switch ball valve, the sample buckle joint has the needle formula of inserting sampling joint, the sampling joint below is provided with the sample glass bottle.

As a further aspect of the present invention: the membrane cover is installed to sample glass bottle top, sample connects the top to be provided with nitrogen gas import and nitrogen gas export.

As a further aspect of the present invention: the valve body is connected with the valve rod in a mode of combining hard sealing and soft sealing, the contact surface of the bottom of the valve rod and the valve body is a taper angle, and the angle of the taper angle is 20-45 degrees.

As a further aspect of the present invention: the automatic rebounding device comprises a rotating barrel, the rotating barrel is internally provided with a sleeve through a ball movably connected, a gland is fixedly connected to the upper portion of the rotating barrel, a top cover is arranged at the center of the gland, a lead screw nut is fixedly connected to the lower portion of the top cover, a lead screw rod is in threaded connection with the middle of the lead screw nut, a pressing block is fixedly connected to the bottom of the lead screw rod, a spring is sleeved on the outer portion of the lead screw nut, and the bottom of the spring is fixedly connected with the pressing.

Compared with the prior art, the beneficial effects of the utility model are that: the nitrogen inlet is arranged at the top of the valve rod and is arranged from top to bottom, so that the nitrogen channel can be purged without dead angles and is not easy to remain; the nitrogen purging and sampling channels are not crossed, the phenomenon of reverse crossing can not occur, the sampling valve is stable in structure, simple, small and exquisite and high in safety performance, and the service life of the quick-wear part is greatly prolonged due to the adoption of conical surface sealing. The valve is simple to operate, and one-hand operation reduces personnel's operation, reduces the risk of taking a sample at the sampling of dangerization article. The safe reliability of the sampling is improved, and the risk of the environment is reduced.

Drawings

FIG. 1 is a schematic diagram of a nitrogen purge sampling valve.

FIG. 2 is a schematic diagram of the construction of the middle internal rebound device of the nitrogen purge sampling valve.

In the figure: 1-valve body, 2-flow pipeline, 3-sampling pipeline, 4-connector, 5-sampling buckle, 6-valve cover, 7-valve rod, 8-automatic rebound handle, 9-filler, 10-valve body flange, 11-nitrogen channel, 12-nitrogen conduit and 13-automatic rebound device.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

Example 1

Referring to fig. 1, in the embodiment of the present invention, a nitrogen purging sampling valve includes a valve body 1, a flow pipeline 2 is horizontally arranged in the valve body 1, a sampling pipeline 3 is vertically arranged in the middle of the valve body 1, a connector 4 is fixedly installed below the valve body 1, a sampling buckle 5 is arranged at the bottom of the connector 4, a valve cover 6 is detachably connected above the valve body 1 through a bolt, a valve rod 7 is arranged inside the sampling pipeline 3, the bottom of the valve rod 7 is in contact connection with the sampling pipeline 3, an automatic rebound handle 8 is connected above the valve rod 7, an automatic rebound device 13 is arranged inside the automatic rebound handle 8, a filler 9 is arranged at the connection part of the valve rod 7, the valve cover 6 and the valve body 1, valve body flanges 10 are connected at two sides of the valve body 1, a nitrogen passage 11 is arranged inside the valve rod 7, and the nitrogen passage, a nitrogen guide pipe 12 is arranged on one side of the valve cover 6, and the nitrogen guide pipe 12 is communicated with a nitrogen channel 11; in the closed state of the sampling valve, a nitrogen channel 11 is formed in the valve cover 6 and is connected with a nitrogen guide pipe 12 arranged on one side of the valve cover 6, a nitrogen pressure reducing valve and a switch ball valve are connected to the outside of the valve cover 6, a needle-inserted sampling joint (which is in buckle connection with the bottom of the valve body) is inserted firstly, and then the sampling joint is placed into a sampling glass bottle with a diaphragm cover. The switch ball valve is opened, nitrogen flows into the glass bottle along the nitrogen channel 11 (the sampling joint has two ports, one inlet and one outlet), the nitrogen is fed to discharge the air in the glass bottle, and the switch ball valve is closed.

In this embodiment, valve gap 6 external connection has nitrogen gas relief pressure valve and switch ball valve, 5 joints of sample buckle have the needle formula of inserting sampling joint, the sampling joint below is provided with the sample glass bottle, and the needle formula buckle structure of bottom sample is simple, safe, high-efficient, and two needles are advanced one by one, and the branch work is clear and definite.

In this embodiment, the diaphragm lid is installed to sample glass bottle top, the sampling joint top is provided with nitrogen gas import and nitrogen gas export, and the glass bottle lid adopts the silica gel technique, and the needle type buckle can heal automatically after inserting and seal, reduces the danger of leaking.

In the embodiment, the valve body 1 is connected with the valve rod 7 in a mode of combining hard sealing and soft sealing, the contact surface of the bottom of the valve rod 7 and the valve body 1 is a taper angle, the angle of the taper angle is 20-45 degrees, dirt is not easily accumulated in the taper design, and abrasion of a soft sealing surface and a hard sealing surface is reduced.

Example 2

Referring to fig. 2, in this embodiment, the automatic rebounding device 13 may be replaced by a common rotating handwheel, the automatic rebounding device 13 includes a rotating cylinder 131, a sleeve 132 is movably connected inside the rotating cylinder 131 through balls, a gland 137 is fixedly connected above the rotating cylinder 131, a top cover 138 is arranged at the center of the gland 137, a lead screw nut 133 is fixedly connected below the top cover 138, a lead screw 134 is connected to the middle of the lead screw nut 133 through threads, a pressing block 135 is fixedly connected to the bottom of the lead screw 134, a spring 136 is sleeved outside the lead screw nut 133, the bottom of the spring 136 is fixedly connected to the pressing block 135, the sleeve 132 drives the lead screw nut 133 by applying a rotating force to the outer surface of the rotating cylinder 131 manually, so that the lead screw 134 moves upward along the lead screw nut 133, and simultaneously drives the pressing block 135 below the lead screw, an upward compression force is generated on the spring 136, so that the spring 136 generates compression deformation, the valve is opened, the rotary cylinder body 131 is loosened, the spring 136 drives the pressing block 135 to move downwards due to the automatic resilience of the spring 136, and simultaneously drives the screw rod 134 to move downwards along the screw rod nut 133, an automatic rebound effect is generated, the valve is closed, and the screw rod 134 moves up and down to drive the bottom valve to move to open and close.

The utility model discloses a theory of operation is: when the sampling valve samples, open external switch ball valve earlier, nitrogen gas gets into the interior replacement air of sampling bottle from pipeline 11, closes the ball valve. Rotate automatic handle 8 that kick-backs and drive valve rod 7 rebound, produce the gap between valve rod 7 and valve body 1, the sample bottle begins the sample, and loose automatic handle 8 that kick-backs after the sample ends, until the valve lock is dead, open the switch ball valve when the sample ends, nitrogen gas sweeps nitrogen gas passageway 11, prevents to have in the needle to remain, also forms the nitrogen protection in the upper half of sample bottle simultaneously.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The nitrogen purging sampling valve comprises a valve body (1) and is characterized in that a circulation pipeline (2) is horizontally arranged in the valve body (1), a sampling pipeline (3) is vertically arranged in the middle of the valve body (1), a connecting body (4) is fixedly arranged below the valve body (1), a sampling buckle (5) is arranged at the bottom of the connecting body (4), a valve cover (6) is detachably connected above the valve body (1) through a bolt, a valve rod (7) is arranged inside the sampling pipeline (3), the bottom of the valve rod (7) is in contact connection with the sampling pipeline (3), an automatic rebound handle (8) is connected above the valve rod (7), an automatic rebound device (13) is arranged inside the automatic rebound handle (8), and a filler (9) is arranged at the joint of the valve rod (7) with the valve cover (6) and the valve body (1), valve body (1) both sides are connected with valve body flange (10), valve rod (7) inside is provided with nitrogen gas passageway (11), nitrogen gas passageway (11) link up valve rod (7) bottom and set up, valve gap (6) one side is provided with nitrogen gas pipe (12), nitrogen gas pipe (12) and nitrogen gas passageway (11) intercommunication.

2. The nitrogen purging sampling valve according to claim 1, wherein a nitrogen pressure reducing valve and a switch ball valve are connected to the outside of the valve cover (6), a needle insertion type sampling joint is clamped on the sampling buckle (5), and a sampling glass bottle is arranged below the sampling joint.

3. A nitrogen purge sampling valve according to claim 2, wherein a membrane cover is mounted above the sampling glass bottle, and a nitrogen inlet and a nitrogen outlet are provided above the sampling adapter.

4. The nitrogen purging and sampling valve according to claim 1, characterized in that the valve body (1) is connected with the valve rod (7) in a manner of combining hard sealing and soft sealing, the contact surface of the bottom of the valve rod (7) and the valve body (1) is in a taper angle, and the taper angle is 20-45 degrees.

5. The nitrogen purging sampling valve according to claim 1, wherein the automatic rebounding device (13) comprises a rotating cylinder (131), a sleeve (132) is movably connected inside the rotating cylinder (131) through a ball, a gland (137) is fixedly connected above the rotating cylinder (131), a top cover (138) is arranged in the center of the gland (137), a lead screw nut (133) is fixedly connected below the top cover (138), a lead screw (134) is in threaded connection with the middle of the lead screw nut (133), a pressing block (135) is fixedly connected to the bottom of the lead screw (134), a spring (136) is sleeved outside the lead screw nut (133), and the bottom of the spring (136) is fixedly connected with the pressing block (135).