CN211954831U

CN211954831U - Manual high-matching type closed sampling system

Info

Publication number: CN211954831U
Application number: CN202020521741.5U
Authority: CN
Inventors: 董落成; 殷新建; 梁俊
Original assignee: Nanjing Advanced Fluid Management Co ltd
Current assignee: Nanjing Advanced Fluid Management Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-11-17
Anticipated expiration: 2030-04-10

Abstract

The utility model belongs to the technical field of the chemical industry sample, concretely relates to airtight sampling system of manual high type of joining in marriage. The sampling device comprises a sampling main pipe, wherein a floating check mechanism is arranged in the sampling main pipe; the upper end of the sampling main pipe is connected with a first valve, the side part of the upper flange is provided with two interfaces, and the two interfaces on the side part of the upper flange are respectively connected with a second valve and a third valve; the lower end of the sampling main pipe is connected with a fourth valve; the fourth valve is a sampling valve provided with a main flow passage and a sampling branch passage, and an opening and closing control mechanism is arranged between the main flow passage and the sampling branch passage; the outlet end of a main flow passage of the sampling valve is connected with a fifth valve, and the fifth valve is connected with an insert pipe inserted into the reaction kettle; and a sampling bottle is arranged at the outlet end of the sampling branch of the sampling valve, and a ventilation pipe is communicated between the sampling bottle and the third valve. The utility model discloses need not to open the cauldron mouth and can draw the sample, operating security is good, the control sample volume of being convenient for.

Description

Manual high-matching type closed sampling system

Technical Field

The utility model belongs to the technical field of the chemical industry sample, concretely relates to airtight sampling system of manual high type of joining in marriage.

Background

When using analytical instruments to determine the composition and content of a material to be measured, the material must be removed from the process piping or vessel and transported to the instrument, a device known as a sampling system. The sampling system is required to rapidly take out samples, and the samples are real and representative so as to obtain more accurate detection results to guide production.

At present, no special sampling equipment is available for use in the aspect of sampling systems for reaction kettles in China, and no professional manufacturer produces the sampling devices in the domestic market. When most chemical enterprises need to take a sample the medium in the reation kettle, adopt manual simple and easy sampler basically or directly absorb required sample from the reation kettle with inhaling the material pipe, sampling device and mode are all comparatively crude and fall behind.

Some defects and potential safety hazards can exist in the reaction kettle sampling process in the existing sampling device and sampling mode: (1) when a sample is extracted, a kettle opening at the upper end of the reaction kettle needs to be opened for sampling, so that the operation is complex; (2) the simple sampling device has requirements on sampling depth, and if the volume of the reaction kettle is larger, the sampling depth is deeper, so that a sample is difficult to extract; (3) the reation kettle mouth is open state among the sample process, and medium and air contact in the cauldron, if be poisonous and harmful among the reation kettle, have corrosivity, volatile or can take place the medium that reacts with the air, then whole sample process can be more dangerous, can cause the injury to the operation workman, and medium and air contact take place the reaction in the reation kettle during the sample and lead to the sample medium inaccurate.

Chinese patent CN201920869726.7 discloses a manual closed sampling system for a reaction kettle, which can extract samples from the reaction kettle in a vacuum or pressure manner without opening the kettle mouth, but has the problems of difficulty in controlling the sampling amount and low operation safety during sampling.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a need not to open the cauldron mouth and can draw the sample, the operational safety is good, be convenient for control the airtight sampling system of type is joined in marriage to manual height of sample volume.

In order to achieve the technical purpose, the utility model adopts the following technical scheme: the manual high-matching type closed sampling system comprises a sampling main pipe, wherein a floating non-return mechanism with a one-way non-return function is arranged in the sampling main pipe; the upper end of the sampling main pipe is connected with a first valve through an upper flange, two interfaces are arranged on the side part of the upper flange, and a second valve and a third valve are respectively connected with the two interfaces on the side part of the upper flange; the lower end of the sampling main pipe is connected with a fourth valve through a lower flange;

the fourth valve is a sampling valve with a main flow passage and a sampling branch passage, the main flow passage of the sampling valve is in a normally open state, and an opening and closing control mechanism is arranged between the main flow passage and the sampling branch passage and controls the opening or the cutting off of the sampling branch passage;

the outlet end of a main flow passage of the sampling valve is connected with a fifth valve, and the fifth valve is connected with an insert pipe inserted into the reaction kettle; and a sampling bottle is arranged at the outlet end of the sampling branch of the sampling valve, and a ventilation pipe is communicated between the sampling bottle and the third valve.

According to the preferable technical scheme, the opening and closing control mechanism comprises a valve core in sealing fit with the inlet of the sampling branch, the valve core is connected with a valve rod capable of reciprocating in the valve body, a return spring is sleeved on the valve rod, one end of the valve rod extends out of the valve body and is connected with an operating handle, and a safety padlock is arranged between the operating handle and the valve body.

As a preferred technical scheme, the floating check mechanism is a polytetrafluoroethylene floating ball.

According to a preferable technical scheme, two interfaces of the side part of the upper flange are respectively connected with an international standard flange through conversion fittings, and are respectively and correspondingly connected with the second valve and the third valve through the international standard flange.

Preferably, the sampling main tube is a transparent tube having a sight glass function.

As a preferred technical scheme, the material of sample person in charge is borosilicate glass, has sight glass function concurrently.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has at least: the fourth valve is replaced by a sampling valve with a main flow passage and a sampling branch passage from an original diaphragm valve, an opening and closing control mechanism is arranged between the main flow passage and the sampling branch passage, and the sampling branch passage is controlled to be opened or cut off through the opening and closing control mechanism, so that the sampling operation is completed, the safety of manual operation is improved, and the sampling quantity can be quickly controlled.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure of the embodiment of the present invention assembled to a reaction kettle;

FIG. 3 is a schematic diagram of the initial state of the embodiment of the present invention before sampling;

FIG. 4 is a schematic view of the embodiment of the present invention in a vacuum pumping state;

FIG. 5 is a schematic view of the embodiment of the present invention in a state of stopping vacuum pumping and sampling;

FIG. 6 is a schematic view of the embodiment of the present invention in a state after the sampling and cleaning;

fig. 7 is a partial enlarged view at I in fig. 6.

Detailed Description

The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in fig. 1 and 2, the manual high-matching type closed sampling system comprises a sampling main pipe 6, wherein the sampling main pipe 6 is made of high borosilicate glass, has a sight glass function, and can clearly observe the physical state of an extracted medium; a floating non-return mechanism with a one-way non-return function is arranged in the sampling main pipe 6; in this embodiment, the floating check mechanism is a polytetrafluoroethylene floating ball 7; the upper end of the sampling main pipe 6 is connected with the first valve 1 through an upper flange 8, two interfaces are arranged on the side part of the upper flange 8, the two interfaces on the side part of the upper flange 8 are respectively connected with an international standard flange 10 through a conversion fitting 9, and the international standard flange 10 is respectively and correspondingly connected with the second valve 2 and the third valve 3; the lower end of the sampling main pipe 6 is connected with the fourth valve 4 through a lower flange 11;

the fourth valve 4 is a sampling valve having a main flow passage 41 and a sampling branch passage 42, the main flow passage 41 of the sampling valve is in a normally open state, and an opening and closing control mechanism is arranged between the main flow passage 41 and the sampling branch passage 42 and controls to open or close the sampling branch passage 42; in this embodiment, the open/close control mechanism includes a valve core 43 in sealing fit with the flow passage port of the sampling branch 42, the valve core 43 is connected with a valve rod 45 capable of reciprocating in the valve body 44, a return spring 46 is sleeved on the valve rod 45, one end of the valve rod 45 extends out of the valve body 44 and is connected with an operation handle, and a safety padlock is arranged between the operation handle and the valve body; the structure and principle of the sampling valve are shown in fig. 7 and patent cn201822225656.x, which are not described herein again.

The outlet end of a main flow passage of the sampling valve is connected with a fifth valve 5, and the fifth valve 5 is connected with an insert pipe 13 inserted into a reaction kettle 12; a sampling bottle 14 is arranged at the outlet end of the sampling branch of the sampling valve, and a ventilation pipe 15 is communicated between the sampling bottle 14 and the third valve 3.

Referring to fig. 3 to 6, the sampling operation steps are as follows:

step one, referring to fig. 3, the initial state: all valves are closed;

step two, referring to fig. 4, vacuum liquid pumping: (1) the first valve 1 is closed, the third valve 3 is closed, the fourth valve 4 is closed, the fifth valve 5 is opened and the second valve 2 is opened; (2) when the vacuum pumping is started, the floating ball 7 floats to the top end of the sampling main pipe 6, the liquid is filled in the sampling main pipe 6, and the second valve 2 is closed;

step three, referring to fig. 5, sampling: (1) stopping vacuumizing, closing the fifth valve 5, opening the third valve 3, opening the safety padlock through the fourth valve 4, and pressing the control handle to start sampling; (2) after sampling is finished, the control handle is loosened, the fourth valve 4 is automatically closed and a safety padlock is added, the third valve 3 is closed, and the sampling bottle 14 is removed;

step four, referring to fig. 6, the cleaning system: (1) filling into an empty sampling bottle 14; (2) the fifth valve 5 is opened, the second valve 2 is opened, nitrogen is introduced, and residual liquid in the sampling system is purged; (3) the second valve 2, the fifth valve 5 and the remaining valves are closed in sequence.

The utility model has the advantages of as follows: (1) the main body structure of the utility model is firm, the parts are finished by finish machining with stainless steel material, and the system interface adopts the national standard flange connection size; (2) the main body and the accessories are convenient to mount and dismount, and the system is easy to upgrade and expand other functions; (3) the sampling branch connection is positioned and installed by adopting two holes, and the flange is connected with DN15 or DN25 PN 16; (4) the sampling main pipe adopts high borosilicate glass, has the function of a sight glass, and can clearly observe the physical state of the extracted medium; (5) the sampling is safe, rapid and reliable, and the process stop is not needed in the sampling process. (6) A safety padlock is arranged before sampling, so that the safety of manual operation is improved; (7) the fourth valve 4 has an automatic resetting closing function, and can quickly control the sampling amount.

The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims

1. The manual high-matching type closed sampling system comprises a sampling main pipe, wherein a floating non-return mechanism with a one-way non-return function is arranged in the sampling main pipe; the upper end of the sampling main pipe is connected with a first valve through an upper flange, two interfaces are arranged on the side part of the upper flange, and a second valve and a third valve are respectively connected with the two interfaces on the side part of the upper flange; the lower end of the sampling main pipe is connected with a fourth valve through a lower flange; the method is characterized in that:

2. The manual high-profile closed sampling system of claim 1, wherein: the switching control mechanism comprises a valve core in sealing fit with the inlet of the sampling branch, the valve core is connected with a valve rod capable of reciprocating in the valve body, a reset spring is sleeved on the valve rod, one end of the valve rod extends out of the valve body and is connected with a control handle, and a safety padlock is arranged between the control handle and the valve body.

3. The manual high-profile closed sampling system of claim 1, wherein: the floating check mechanism is a polytetrafluoroethylene floating ball.

4. The manual high-matching type closed sampling system of claim 1, wherein the two interfaces on the side part of the upper flange are respectively connected with an international standard flange through conversion fittings, and are respectively and correspondingly connected with the second valve and the third valve through the international standard flange.

5. The manual high-matching type closed sampling system according to any one of claims 1 to 4, wherein the sampling main pipe is a transparent pipe with a sight glass function.

6. The manual high-matching type closed sampling system of claim 5, wherein the sampling main pipe is made of high borosilicate glass and has a sight glass function.