CN216116968U

CN216116968U - Sampling device

Info

Publication number: CN216116968U
Application number: CN202122582693.8U
Authority: CN
Inventors: 徐明进; 刘君霞; 赵玲
Original assignee: Jiangxi Bluestar Xinghuo Silicone Co Ltd
Current assignee: Jiangxi Bluestar Xinghuo Silicone Co Ltd
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-03-22
Anticipated expiration: 2031-10-26

Abstract

The utility model discloses a sampling device, which comprises: the valve body is provided with a material inlet and a material outlet; and a sampling inlet and a sampling outlet are formed; the valve core is arranged in the valve body, and a material storage space is formed in the valve core; the valve core is provided with a first position and a second position, when the valve core is positioned at the first position, the material inlet is communicated with the material outlet through the material storage space of the valve core, so that the sampling device forms a material circulation channel, and when the valve core is positioned at the second position, the sampling inlet is communicated with the sampling outlet through the material storage space of the valve core, so that the material in the material storage space of the valve core is discharged through the sampling outlet.

Description

Sampling device

Technical Field

The utility model relates to auxiliary equipment of chemical equipment, in particular to a sampling device.

Background

In the rectification operation of chemical production, in order to solve the product content distribution in the process, samples need to be intermittently collected and components in the samples need to be analyzed, so the quality of the sample collection is related to the adjustment of process parameters, and inaccurate samples can cause misjudgment of personnel and cause unqualified products.

Meanwhile, modern enterprises pay more attention to the health of employees, the environmental protection of factories and the 5S on site, a high-efficiency sample collecting device is particularly important, and the accurate, small-amount and safe sample collection is one of the requirements of modern factories on sample collectors.

Because the methyl chlorosilane is flammable and explosive, toxic and harmful, has water absorption, and can react with water molecules in the air to generate hydrochloric acid fog when being directly exposed in the air, the human body is injured by inhalation and contact, the human body is washed by a large amount of clear water after being contacted, the human body is injured to the lung of a person during inhalation, and the person is suffocated to die; the product directly reacts with water to generate hydrochloric acid, and releases a large amount of acid mist to finally generate colloidal hydrolysate, so that the collection of the methylchlorosilane liquid is always a great problem troubling technical personnel.

The existing sample collector is generally made of a tetrafluoro material, is not resistant to high temperature, is not tightly sealed when the temperature of internal fluid exceeds 90 ℃, is easy to drip, and has obvious leakage condition of a sampling valve due to factors such as expansion with heat and contraction with cold when hot fluid is closed, even the material is linearly leaked; the material is flammable and explosive in nature, toxic and harmful, not only harms the health of operators, but also corrodes field equipment and pipelines, and the generated hydrolysate is difficult to clean, thereby improving the cleaning difficulty of the operation field.

Therefore, it is desirable to provide a new sampling device to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a sampling device which solves at least one of the above mentioned technical problems.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a sampling device, comprising:

the valve body is provided with a material inlet and a material outlet; and a sampling inlet and a sampling outlet are formed; and

the valve core is arranged in the valve body, and a material storage space is formed in the valve core;

the valve core is provided with a first position and a second position, when the valve core is positioned at the first position, the material inlet is communicated with the material outlet through the material storage space of the valve core, so that the sampling device forms a material circulation channel, and when the valve core is positioned at the second position, the sampling inlet is communicated with the sampling outlet through the material storage space of the valve core, so that the material in the material storage space of the valve core is discharged through the sampling outlet.

Optionally, when the valve core is in the first position, the sampling inlet and the sampling outlet are not communicated; and/or when the valve core is at the second position, the material inlet and the material outlet are not communicated.

Optionally, when the valve core moves from the first position to the second position, the total amount of the material stored in the material storage space of the valve core is unchanged.

Optionally, the valve core moves from the first position to the second position or from the second position to the first position by rotation or movement.

Optionally, the sampling device further includes an upper module and a lower module, the upper module is formed with an upper air inlet channel, the lower module is formed with a liquid discharge channel, and the upper air inlet channel of the upper module is communicated with the sampling inlet, and the liquid discharge channel of the lower module is communicated with the sampling outlet.

Optionally, the lower module is further formed with a lower air inlet channel, and one end of the lower air inlet channel is communicated with the liquid discharge channel.

Optionally, the sampling device further comprises a gas source, the gas source is used for providing nitrogen with a preset pressure, and the gas source is connected with the upper air inlet channel so as to provide nitrogen with a preset pressure to the upper air inlet channel.

Optionally, the gas source is further connected to the lower gas inlet channel through a capillary tube, so that when the valve core is in the first position, the liquid discharge channel is filled with nitrogen.

Optionally, the lower module further comprises an exhaust passage, and when a sampling bottle is disposed in the lower module, the liquid discharge passage and the exhaust passage are both communicated with the sampling bottle.

Optionally, the sampling device further comprises a replacement bottle, and the exhaust passage is connected to the replacement bottle.

The utility model has the following beneficial effects: the sampling device solves the problem that the valve body is easy to leak when high-temperature fluid is collected, and improves the reliability of products; a nitrogen protection device is added, so that the accuracy of sample collection is improved; meanwhile, the problem of environmental pollution is solved, and the personnel health and field management are further improved; aiming at the problem that the imported sample collector is expensive, the purchase unit price of the sample collector is further reduced through independent innovation.

Drawings

FIG. 1 is a schematic structural view (material conveying state) of a sampling device according to the present invention;

FIG. 2 is a schematic structural diagram (sampling state) of the sampling device of the present invention;

the notation in the figures means: 10-a valve body; 11-material inlet; 12-material outlet; 13-a sample inlet; 14-a sampling outlet; 20-a valve core; 25-an upper module; 26-an upper intake passage; 30-a lower module; 31-a drainage channel; 32-lower intake passage; 33-an exhaust channel; 35-a capillary tube; 40-a sampling bottle; 45-replacing the bottle; 50-nitrogen needle valve; 55-nitrogen positive pressure gauge; 60-upper plate; 65-lower wall.

Detailed Description

The technical solution of the present invention is further described below with reference to the following embodiments and the accompanying drawings.

Example 1

The present embodiment provides a sampling device, which includes:

a valve body 10, the valve body 10 being formed with a material inlet 11 and a material outlet 12; and is formed with a sampling inlet 13 and a sampling outlet 14; and

the valve core 20 is arranged inside the valve body 10, and a material storage space is formed on the valve core 20;

the valve core 20 has a first position and a second position, when the valve core 20 is at the first position, the material inlet 11 is communicated with the material outlet 12 through the material storage space of the valve core 20, so that the sampling device forms a material flow passage, and when the valve core 20 is at the second position, the sampling inlet 13 is communicated with the sampling outlet 14 through the material storage space of the valve core 20, and the material in the material storage space of the valve core 20 is discharged through the sampling outlet 14.

That is, by forming a material storage space in the valve core 20, that is, forming a sample collection chamber on the valve core 20, and making the volume of the sample collection chamber not exceed 2/3 of the volume of the sampling bottle at most, when the valve core 20 is in the first position, that is, in a state of conveying materials, the material is stored in the material storage space of the valve core 20, and at this time, when the valve core 20 is rotated or moved to the second position, the material in the valve core 20 is taken out, that is, the collection of the sample is achieved.

In the present disclosure, when the valve core 20 is in the first position, the sampling inlet 13 and the sampling outlet 14 are not communicated with each other; and/or when the valve core 20 is in the second position, the material inlet 11 and the material outlet 12 are not communicated.

When the valve core 20 moves from the first position to the second position, the total amount of material stored in the material storage space of the valve core 20 is not changed.

Preferably, the spool 20 is moved from the first position to the second position or vice versa by rotation or movement.

In the present disclosure, the sampling device further includes an upper module 25 and a lower module 30, the upper module 25 is formed with an upper air inlet passage 26, the lower module 30 is formed with a drainage passage 31, and the upper air inlet passage 26 of the upper module 25 is communicated with the sampling inlet 13, and the drainage passage 31 of the lower module 30 is communicated with the sampling outlet 14.

The upper module 25 and the lower module 30 may be made of teflon or the like, and the upper module, the valve body, and the lower module may be fixed together by an upper plate 60 and a lower plate 65.

The lower module 30 is further formed with a lower air intake passage 32, and one end of the lower air intake passage 32 communicates with the liquid discharge passage 31.

The sampling device further comprises a gas source, the gas source is used for providing nitrogen with preset pressure, and the gas source is connected with the upper air inlet channel 26 so as to provide the nitrogen with the preset pressure for the upper air inlet channel 26.

The gas source is also connected to the lower inlet channel 32 via a capillary tube 35 to fill the drain channel 31 with nitrogen when the valve element 20 is in the first position.

The lower module 30 further comprises a vent passage 33, and both the drain passage 31 and the vent passage 33 communicate with the sample bottle 40 when the sample bottle 40 is disposed in the lower module 30.

The sampling device further comprises a replacing bottle 45, and the exhaust channel 33 is connected to the replacing bottle 45, so that the gas exhausted from the sampling bottle 40 is filtered by the replacing bottle 45 and then exhausted to the atmosphere.

In this disclosure, when case 20 is in the first position, the air supply provides nitrogen gas through nitrogen gas needle valve 50 to make nitrogen gas positive pressure table 55 be in continuously and stably the pressure-fired, nitrogen gas positive pressure table 55 sets up in capillary 35, thereby makes nitrogen gas flow to lower part inlet channel 32 from the capillary, and gets into flowing back passageway 31, absorbs the filtration back through the silicon oil in the replacement bottle 45, discharges again, whole nitrogen gas flows because the resistance of silicon oil, the inside pressure-fired state that is always of passageway, outside humid air can not pollute passageway and sampling bottle (glass sampling bottle), provides the guarantee for next sample collection.

When the valve core 20 moves from the first position to the second position, the gas source provides nitrogen through the nitrogen needle valve 50, and the nitrogen positive pressure gauge 55 is in continuous and stable micro-positive pressure, the nitrogen enables the material in the valve core 20 to flow to the glass sampling bottle, after the material in the valve core 20 flows out, the residual gas flows from the glass sampling bottle to the replacement bottle, the residual gas is absorbed by the silicon oil in the replacement bottle and then discharged, and at the moment, the operator rotates anticlockwise to take down the glass sampling bottle and replace the clean sampling bottle; finally, the valve core is moved from the first position to the second position and is recovered to the condition before operation; the entire collection of samples is completed.

Therefore, the sampling device of the present disclosure has the following technical effects: the sample is not influenced by the external environment, the accuracy is high, the sampling operation is simple, and the emission pollution is small; the valve body can resist high temperature without leakage, and the reliability is high; the sample is not influenced by the external environment, and the sample accuracy is high; the operation steps are few, and the operation safety of personnel is high; the discharged gas is replaced and absorbed, and the environmental pollution is small.

The sequence of the above embodiments is only for convenience of description and does not represent the advantages and disadvantages of the embodiments.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A sampling device, comprising:

2. The sampling device of claim 1, wherein when the spool is in the first position, there is no communication between the sampling inlet and the sampling outlet; and/or when the valve core is at the second position, the material inlet and the material outlet are not communicated.

3. The sampling device of claim 2, wherein the total amount of material stored in the material storage space of the valve element is constant when the valve element is moved from the first position to the second position.

4. A sampler device as claimed in claim 2, wherein the valve spool is movable by rotation or movement from the first to the second position, or vice versa.

5. A sampling device according to claim 4, further comprising an upper module formed with an upper air inlet passage and a lower module formed with a liquid discharge passage and such that the upper air inlet passage of the upper module communicates with the sampling inlet and the liquid discharge passage of the lower module communicates with the sampling outlet.

6. The sampling device of claim 5, wherein the lower module is further formed with a lower air inlet passage having one end in communication with the liquid discharge passage.

7. The sampling device of claim 6, further comprising a gas source for providing nitrogen gas at a predetermined pressure, the gas source being connected to the upper inlet passage to provide nitrogen gas at a predetermined pressure to the upper inlet passage.

8. The sampling device of claim 7, wherein the gas source is further connected to the lower gas inlet channel by a capillary tube to fill the drain channel with nitrogen when the valve element is in the first position.

9. The sampling device of claim 8, wherein the lower module further comprises a vent passage, both the drain passage and the vent passage being in communication with a sample bottle when the sample bottle is disposed in the lower module.

10. The sampling device of claim 9, further comprising a displacement vial, the vent passage connected to the displacement vial.