CN219608503U - Hydrochloric acid sampling device - Google Patents

Abstract

The utility model relates to a hydrochloric acid sampling device, and belongs to the technical field of hydrochloric acid preparation. The hydrochloric acid sampling device comprises a sampling tube, a detection piece, a gas transmission tube, a shell and an air bag. One end of the sampling tube is used for absorbing hydrochloric acid sample liquid. The detecting piece is communicated with the other end of the sampling tube and is used for detecting the concentration of hydrochloric acid. The detection part is provided with an exhaust port communicated with the inside of the detection part. One end of the gas pipe is communicated with the inside of the sampling pipe. The shell is rotatably arranged at the other end of the gas transmission pipe, a first cavity and a second cavity for storing weak base solution are arranged in the shell, and a gas outlet hole communicated with the first cavity and a liquid outlet hole communicated with the second cavity are formed in the shell. The shell rotates to drive the liquid outlet hole to be communicated with the inside of the gas pipe, or drive the air outlet hole to be communicated with the inside of the gas pipe. The air bag is mounted on the housing. The interior of the air bag is respectively communicated with the first cavity and the second cavity.

Description

Hydrochloric acid sampling device

Technical Field

The utility model belongs to the technical field of hydrochloric acid preparation, and particularly relates to a hydrochloric acid sampling device.

Background

In the process of preparing hydrochloric acid by absorbing hydrogen chloride gas by clear water, an operator needs to determine the density of hydrochloric acid at regular time, when the concentration of hydrochloric acid is too high, the input amount of raw material water needs to be increased, and when the concentration of hydrochloric acid is too low, the input amount of raw material water needs to be reduced, so that the hydrochloric acid is kept within a specific concentration range.

The applicant searches to find that the novel hydrochloric acid sampling device of the potassium sulfate factory in the publication number CN214584315U is provided with a hydrochloric acid sampler comprising a buffer cylinder, wherein an inlet pipe and an outlet pipe are arranged on the buffer cylinder, an inlet valve body is arranged on the inlet pipe, an outlet valve body is arranged on the outlet pipe, a first emptying port is arranged on the buffer cylinder, and a first emptying valve is arranged on the first emptying port; the acid measuring cylinder comprises a transparent acid measuring cylinder, the acid measuring cylinder is provided with a connecting pipe, the acid measuring cylinder is communicated with the buffer cylinder through the connecting pipe, the acid measuring cylinder is provided with an acid discharging port and a second emptying port, the second emptying port is provided with a second emptying valve, and the acid discharging port is provided with an acid discharging valve; and the Baume gauge is sleeved with at least two guide rings, and is vertically connected with the inside of the acid measuring cylinder through the guide rings.

However, the prior art represented by the above patent still has problems in that when the measuring member for measuring the concentration of hydrochloric acid is required to be removed and separated from the buffer member, residual hydrochloric acid in the buffer member flows out to splash on the work clothes of the operator, corrode the clothes of the operator, and cause safety hazards.

Disclosure of Invention

The utility model provides a hydrochloric acid sampling device which is used for solving the technical problems.

In order to achieve the above purpose, the present utility model is realized by the following technical scheme: the hydrochloric acid sampling device comprises a sampling tube, a detection piece, a gas transmission tube, a shell and an air bag. One end of the sampling tube is used for absorbing hydrochloric acid sample liquid. The detecting piece is communicated with the other end of the sampling tube and is used for detecting the concentration of hydrochloric acid. The detection part is provided with an exhaust port communicated with the inside of the detection part. One end of the gas pipe is communicated with the inside of the sampling pipe. The shell is rotatably arranged at the other end of the gas transmission pipe, a first cavity and a second cavity for storing weak base solution are arranged in the shell, and a gas outlet hole communicated with the first cavity and a liquid outlet hole communicated with the second cavity are formed in the shell. The shell rotates to drive the liquid outlet hole to be communicated with the inside of the gas pipe, or drive the air outlet hole to be communicated with the inside of the gas pipe. The air bag is mounted on the housing. The interior of the air bag is respectively communicated with the first cavity and the second cavity. An external force is applied to the balloon to cause air within the balloon to enter the first cavity and/or the second cavity.

Through the structure, the hydrochloric acid sampling device provided by the utility model can neutralize the hydrochloric acid in the sampling tube when the detection piece is required to be disassembled, so that the situation that the hydrochloric acid splashes to hurt people can not happen when the detection piece is disassembled. Specifically, when the sampling device is used, the first cavity is communicated with the inside of the gas transmission pipe, and the exhaust port is closed. And then, applying external force to the air bag so that the air in the air bag sequentially passes through the first cavity, the air conveying pipe, the sampling pipe and is discharged into hydrochloric acid liquid. The air bag is then released so that air passes from the air delivery tube through the air delivery tube and the first cavity in sequence into the air bag. Thereby forming negative pressure at one end of the sampling tube positioned in the hydrochloric acid, further driving the hydrochloric acid to enter the sampling tube, and flowing into the detection piece to be detected under the action of gravity.

When the detection piece needs to be disassembled, the exhaust port is opened. The housing is then rotated to place the second chamber in communication with the gas delivery conduit. An external force is applied to the bladder such that air within the bladder is expelled into the second chamber. So that the air pressure in the second cavity is greater than the air pressure in the air delivery pipe, and the weak base solution enters the air delivery pipe. And enters the sampling tube to move towards the direction approaching the detection piece, so as to carry out neutralization reaction with residual hydrochloric acid. Then loosen the gasbag to make the air in the gas-supply pipe get into in the second cavity through the drain hole, then rotate the casing, so that first cavity is linked together with the gas-supply pipe, extrude the gasbag so that the air in the gasbag passes through first cavity, gas-supply pipe, sampling piece in proper order and discharges into the external world through the gas vent, then loosen the gasbag, so that external air gets into the detection piece through the gas vent. And sequentially passes through the sampling tube gas transmission pipe and the first cavity and then enters the air bag. During the reaction, the hydrochloric acid at the joint of the detection piece and the sampling tube is fully mixed with the weak base solution for reaction. The test element is then removed to facilitate cleaning thereof.

Optionally, the housing comprises an outer shell and a partition. The shell is rotatably arranged at the other end of the gas pipe, the air bag is arranged on the shell and communicated with the inside of the shell, and the air bag and the gas pipe are respectively positioned at the opposite ends of the shell. The baffle is installed on the inner wall of shell near the gas-supply pipe. The inner peripheral side of the partition board and the inner wall of the shell, which is close to the gas pipe, are surrounded to form a second cavity. The outer periphery side of the baffle plate and the inner peripheral wall of the shell and the inner wall of the shell close to the gas pipe are surrounded to form a first cavity. The shell is provided with an air outlet hole communicated with the first cavity and a liquid outlet hole communicated with the second cavity.

Optionally, the other end of the air pipe is provided with a liquid inlet hole and an air inlet hole which are communicated with the inside of the air pipe, and the shell rotates relative to the air pipe to drive the liquid inlet hole to be communicated with the liquid outlet hole and separate the air inlet hole from the air outlet hole, or drive the air inlet hole to be communicated with the air outlet hole and separate the liquid inlet hole from the liquid outlet hole. The design enables an operator to communicate the first cavity with the air pipe by rotating the shell and isolate the second cavity from the air pipe. Or the second cavity is communicated with the gas pipe, and the first cavity is isolated from the gas pipe.

Optionally, the hydrochloric acid sampling device further comprises a transfusion tube and a first shutoff valve. One end of the infusion tube is positioned in the second cavity, and the other end of the infusion tube passes through the inner wall of the shell and is positioned outside the shell. The first shutoff valve is arranged on the other end of the infusion tube outside the shell and is used for blocking and/or communicating with the infusion tube. This design allows the operator to deliver the weak base solution into the second chamber through the infusion tube.

Optionally, the detection member includes a liquid reservoir and a baume meter. The liquid accumulation tank is arranged at the other end of the sampling tube and is communicated with the inside of the sampling tube, and the liquid accumulation tank is provided with an exhaust port communicated with the inside of the liquid accumulation tank. The Baume meter is provided with a measuring end and a display end, wherein the measuring end is positioned in the liquid accumulation tank, and the display end penetrates through the liquid accumulation tank and is positioned at the outer side of the liquid accumulation tank.

Optionally, the hydrochloric acid sampling device further comprises a buffer tank and a buffer tube. One end of the sampling tube is inserted into the buffer tank. One end of the buffer tube is used for absorbing hydrochloric acid sample liquid, and the other end of the buffer tube is inserted into the buffer tank. The design of buffer tank and buffer tube makes the sampling tube not directly be connected with the production line when taking a sample to thereby prevent that too much hydrochloric acid from getting into in the hydroplaning jar and taking place the condition of overflow.

Optionally, the hydrochloric acid sampling device further comprises a second shut-off valve. The second shutoff valve is arranged on the sampling tube, and the gas transmission tube is positioned between the second shutoff valve and the buffer tank. The second shutoff valve is used for blocking and/or communicating with the sampling pipe.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a hydrochloric acid sampling device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the hydrochloric acid sampling device in the direction A in FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 2;

fig. 4 is a schematic structural diagram of a hydrochloric acid sampling device in the direction a in fig. 1 when the hydrochloric acid sampling device is located at a second station according to an embodiment of the present utility model;

FIG. 5 is an enlarged view at C in FIG. 4;

FIG. 6 is a schematic diagram of a gas pipe according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a housing according to an embodiment of the present utility model;

FIG. 8 is an exploded view of a housing and an airbag according to an embodiment of the present utility model;

FIG. 9 is a schematic structural diagram of a hydrochloric acid sampling device provided by an embodiment of the utility model after a buffer tank is installed;

FIG. 10 is a schematic diagram of the hydrochloric acid sampling device in the direction D in FIG. 9;

FIG. 11 is a cross-sectional view taken along the path E-E of FIG. 10 at a third station;

fig. 12 is an enlarged view of F in fig. 11;

FIG. 13 is a cross-sectional view taken along the path E-E of FIG. 10 at a fourth station;

fig. 14 is an enlarged view at G in fig. 13.

In the figure:

1-a sampling tube; 11-a second shut-off valve; 2-detecting part; 21-a liquid accumulation tank; 211-exhaust port; 22-baume meter; 221-display end; 222—measurement end; 3-a gas pipe; 31-a first end; 32-a second end; 321-air inlet holes; 322-liquid inlet hole; 4-a housing; 401-a first cavity; 4011-an air outlet hole; 402-a second cavity; 4021-a liquid outlet hole; 41-a housing; 42-a separator; 5-an air bag; 6-a transfusion tube; 61-a first shut-off valve; 7-a buffer tank; 71-buffer tube.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples

The applicant searches to find that the novel hydrochloric acid sampling device of the potassium sulfate factory in the publication number CN214584315U is provided with a hydrochloric acid sampler comprising a buffer cylinder, wherein an inlet pipe and an outlet pipe are arranged on the buffer cylinder, an inlet valve body is arranged on the inlet pipe, an outlet valve body is arranged on the outlet pipe, a first emptying port is arranged on the buffer cylinder, and a first emptying valve is arranged on the first emptying port; the acid measuring cylinder comprises a transparent acid measuring cylinder, the acid measuring cylinder is provided with a connecting pipe, the acid measuring cylinder is communicated with the buffer cylinder through the connecting pipe, the acid measuring cylinder is provided with an acid discharging port and a second emptying port, the second emptying port is provided with a second emptying valve, and the acid discharging port is provided with an acid discharging valve; and the Baume gauge is sleeved with at least two guide rings, and is vertically connected with the inside of the acid measuring cylinder through the guide rings.

However, the prior art represented by the above patent still has problems in that when the measuring member for measuring the concentration of hydrochloric acid is required to be removed and separated from the buffer member, residual hydrochloric acid in the buffer member flows out to splash on the work clothes of the operator, corrode the clothes of the operator, and cause safety hazards.

In order to solve the above technical problems, the present embodiment provides a hydrochloric acid sampling device, as shown in fig. 1, which includes a sampling tube 1, a detecting member 2, a gas pipe 3, a housing 4, and an air bag 5. One end of the sampling tube 1 is used for absorbing hydrochloric acid sample liquid. The detecting piece 2 is communicated with the other end of the sampling tube 1, and the detecting piece 2 is used for detecting the concentration of hydrochloric acid. The detecting element 2 is provided with an exhaust port 211 communicated with the inside of the detecting element 2. The gas delivery conduit 3 has oppositely disposed first and second ends 31, 32 as shown in FIG. 6. The first end 31 communicates with the interior of the sampling tube 1 as shown in FIG. 2. The casing 4 is rotatably installed on the second end 32 of the air delivery pipe 3, as shown in fig. 3, a first cavity 401 and a second cavity 402 for storing weak alkaline solution are provided in the casing 4, and an air outlet hole 4011 communicated with the first cavity 401 and a liquid outlet hole 4021 communicated with the second cavity 402 are provided in the casing 4. The housing 4 rotates in the direction W1 as shown in fig. 1, and as shown in fig. 3, the liquid outlet 4021 is driven to communicate with the inside of the air delivery pipe 3. The housing 4 rotates in the W2 direction as shown in fig. 9, and the outlet hole 4011 is driven to communicate with the inside of the gas delivery pipe 3 as shown in fig. 12. The airbag 5 is mounted on the housing 4. The interior of the balloon 5 communicates with the first cavity 401 and the second cavity 402, respectively. An external force is applied to the balloon 5 so that air in the balloon 5 enters the first cavity 401 and the second cavity 402.

The weak base solution may be a 2-5% sodium acetate solution.

Through above-mentioned structure, the hydrochloric acid sampling device that this embodiment provided can be when dismantling detection piece 2 to the hydrochloric acid in the sampling tube 1 neutralization to can not take place the hydrochloric acid when dismantling detection piece 2 and splash the condition of injury people. Specifically, when the sampling device is used, the housing 4 rotates in the W2 direction as shown in fig. 9, and the air outlet 4011 is connected to the second end 32 of the air pipe 3 as shown in fig. 12. So that the first chamber 401 communicates with the second end 32 of the gas delivery conduit 3 as shown in fig. 11. Then, the exhaust port 211 is closed, and an external force is applied to the balloon 5 as shown in fig. 11 so that the air in the balloon 5 is discharged into the hydrochloric acid liquid through the first chamber 401, the gas pipe 3, and the sampling pipe 1 in this order in the direction of N3. The bladder 5 is then released as shown in fig. 13 such that air passes from within the air delivery conduit 3, through the first chamber 401, and into the bladder 5 in sequence in the direction N4. Thereby forming negative pressure at one end of the sampling tube 1 positioned in the hydrochloric acid, further driving the hydrochloric acid to enter the sampling tube 1 along the direction N4, and flowing into the detecting piece 2 along the direction N5 to be detected under the action of gravity.

When the detection piece 2 needs to be detached, the exhaust port 211 is opened. The housing 4 is then rotated in the direction W1 as shown in fig. 1, as shown in fig. 3, to bring the liquid outlet 4021 into communication with the inside of the air delivery pipe 3. An external force is applied to the air bag 5 as shown in fig. 2 so that air in the direction N1 in the air bag 5 is discharged into the second chamber 402. So that the air pressure in the second chamber 402 is greater than the air pressure in the air delivery pipe 3, so that the weak base solution enters the air delivery pipe 3 in the direction N1. And enters the sampling tube 1 to move toward the detection member 2, thereby carrying out neutralization reaction with residual hydrochloric acid. The bladder 5 is then released as shown in fig. 4 so that air in the air delivery conduit 3 passes through the liquid outlet holes 4021 in the direction of N2 into the second chamber 402. The housing 4 rotates in the direction W2 as shown in fig. 9, and as shown in fig. 12, the outlet hole 4011 is driven to communicate with the second end 32 of the gas pipe 3. So that the first chamber 401 communicates with the second end 32 of the gas delivery conduit 3 as shown in fig. 11. The airbag 5 is then pressed such that the air in the airbag 5 passes through the first chamber 401, the gas pipe 3, the sampling tube 1, the sampling member, and is discharged to the outside through the gas discharge port 211 in this order, and then the airbag 5 is released such that the outside air passes through the gas discharge port 211 into the detecting member 2. And sequentially passes through the gas delivery tube 3 of the sampling tube 1 and the first cavity 401 and then enters the airbag 5. During this period, the hydrochloric acid at the joint of the detecting element 2 and the sampling tube 1 is fully mixed and reacted with the weak base solution. The test element 2 is then removed to facilitate cleaning thereof.

Based on the above, in order to have the first cavity 401 and the second cavity 402 inside the housing 4. The housing 4 includes a case 41 and a partition 42 as shown in fig. 7. The housing 41 is rotatably installed at the other end of the air delivery pipe 3, the air bag 5 is installed on the housing 41 and communicates with the inside of the housing 41, and the air bag 5 and the air delivery pipe 3 are respectively located at opposite ends of the housing 41. The partition plate 42 is mounted on the inner wall of the housing 41 near the gas delivery pipe 3. The inner peripheral side of the partition plate 42 and the inner wall of the housing 41 close to the gas delivery pipe 3 enclose a second cavity 402. The outer peripheral side of the partition plate 42 and the inner peripheral wall of the housing 41 define a first cavity 401 with the inner wall of the housing 41 adjacent to the gas delivery pipe 3. The housing 41 is provided with an air outlet hole 4011 communicated with the first cavity 401 and a liquid outlet hole 4021 communicated with the second cavity 402. As shown in fig. 3, the axis of the outlet hole 4011 is in the same plane as the axis of the housing 41 and the axis of the outlet hole 4021.

Based on the above, in order to allow the housing 4 to rotate relative to the second end 32. The second end 32 is provided with a liquid inlet 322 and an air inlet 321 which are communicated with the inside of the air delivery pipe 3 as shown in fig. 6. It should be noted that the axis of the liquid inlet 322 is located outside the plane of the axis of the air inlet 321 and the axis of the second end 32. Specifically, the housing 41 rotates in the direction W1 as shown in fig. 1, and drives the liquid outlet 4021 to communicate with the liquid inlet 322 as shown in fig. 3. The housing 41 is rotated in the direction W2 as shown in fig. 9, and the air outlet 4011 is brought into communication with the air inlet 321 as shown in fig. 12.

A weak base solution is conveniently added to the second cavity 402. The hydrochloric acid sampling device as shown in fig. 7 and 8 further comprises a transfusion tube 6 and a first shutoff valve 61. One end of the infusion tube 6 is located in the second cavity 402, and the other end of the infusion tube 6 passes through the inner wall of the housing 41 and is located outside the housing 41. A first shut-off valve 61 is mounted on the other end of the infusion tube 6 outside the housing 41, the first shut-off valve 61 being used to shut off and/or communicate with the infusion tube 6. Thus, the operator can deliver the weak base solution into the second chamber 402 through the infusion tube 6. Preferably, the housing 41 and the partition 42 are made of transparent materials, so as to facilitate the operator to view the level of the weak alkaline solution in the second chamber 402.

Based on the above, in order to enable the detecting member 2 to detect the concentration of hydrochloric acid. The detecting member 2 includes a liquid reservoir 21 and a baume meter 22 as shown in fig. 9. The bome meter 22 is a tuning fork densitometer corrosion-resistant bome meter 22 manufactured by Shanghai ken technologies, inc., which is a prior art and is not described in detail herein. The liquid accumulation tank 21 is mounted on the other end of the sampling tube 1 and communicates with the inside of the sampling tube 1, and the liquid accumulation tank 21 has an exhaust port 211 communicating with the inside of the liquid accumulation tank 21. The baume meter 22 shown in fig. 10 and 11 has a measuring end 222 and a display end 221, the measuring end 222 being located within the fluid reservoir 21 as shown in fig. 11, and the display end 221 passing through the fluid reservoir 21 and being located outside the fluid reservoir 21 as shown in fig. 10.

Based on the above-described basis. The hydrochloric acid sampling device as shown in fig. 9 further includes a buffer tank 7 and a buffer tube 71. One end of the sampling tube 1 is inserted into the buffer tank 7. One end of the buffer tube 71 is used for absorbing the hydrochloric acid sample liquid, and the other end of the buffer tube 71 is inserted into the buffer tank 7. Thus, the sampling tube 1 is not directly connected with the production line during sampling, and excessive hydrochloric acid is prevented from entering the liquid storage tank 21 to overflow.

Based on the above, in order to prevent the weak base solution from flowing back into the buffer tank 7, and in order to prevent the hydrochloric acid in the sampling tube 1 from continuing to move in a direction approaching the liquid accumulation tank 21. The hydrochloric acid sampling device as shown in fig. 6 further comprises a second shut-off valve 11. The second shutoff valve 11 is arranged on the sampling tube 1, and the gas transmission tube 3 is positioned between the second shutoff valve 11 and the buffer tank 7. The second shut-off valve 11 is used to shut off and communicate with the sampling tube 1.

In summary, in using the sampling device, first, the housing 4 rotates along the W2 direction as shown in fig. 9, and the air outlet 4011 is driven to communicate with the air inlet 321 as shown in fig. 12. So that the first chamber 401 communicates with the second end 32 of the gas delivery conduit 3 as shown in fig. 11. Then, the exhaust port 211 is closed, and an external force is applied to the air bladder 5 as shown in fig. 11 and 12 so that the air in the air bladder 5 is discharged into the hydrochloric acid liquid through the first chamber 401, the air pipe 3, and the sampling pipe 1 in this order in the direction of N3. The bladder 5 is then released as shown in figures 13 and 14 so that air passes from within the air delivery conduit 3 through the first chamber 401 of the air delivery conduit 3 in sequence in the direction N4 into the bladder 5. Thereby forming negative pressure at one end of the sampling tube 1 positioned in the hydrochloric acid, further driving the hydrochloric acid to enter the sampling tube 1 along the direction N4, and flowing into the liquid accumulation tank 21 along the direction N5 under the action of gravity to be detected by the Baume meter 22.

When the detection member 2 needs to be detached, the exhaust port 211 is opened and the sampling tube 1 is blocked from the buffer tank 7 by the second shutoff valve 11. The housing 41 is then rotated in the direction W1 as shown in FIG. 1, as shown in FIG. 3, to bring the liquid outlet 4021 into communication with the liquid inlet 322. An external force is applied to the air bag 5 as shown in fig. 2 so that air in the direction N1 in the air bag 5 is discharged into the second chamber 402. So that the air pressure in the second chamber 402 is greater than the air pressure in the air delivery pipe 3, so that the weak base solution enters the air delivery pipe 3 in the direction N1. And enters the sampling tube 1 to move toward the detection member 2, thereby carrying out neutralization reaction with residual hydrochloric acid. The bladder 5 is then released as shown in fig. 4 so that air in the air delivery conduit 3 passes through the liquid outlet holes 4021 in the direction of N2 into the second chamber 402. The housing 4 rotates in the direction W2 as shown in fig. 9, and as shown in fig. 12, the outlet hole 4011 is driven to communicate with the second end 32 of the gas pipe 3. So that the first chamber 401 communicates with the second end 32 of the gas delivery conduit 3 as shown in fig. 11. The airbag 5 is then pressed such that the air in the airbag 5 passes through the first chamber 401, the gas pipe 3, the sampling tube 1, the sampling member, and is discharged to the outside through the gas discharge port 211 in this order, and then the airbag 5 is released such that the outside air passes through the gas discharge port 211 into the detecting member 2. And sequentially passes through the gas delivery tube 3 of the sampling tube 1 and the first cavity 401 and then enters the airbag 5. During this period, the hydrochloric acid at the joint of the detecting element 2 and the sampling tube 1 is fully mixed and reacted with the weak base solution. The test element 2 is then removed to facilitate cleaning thereof.

The hydrochloric acid sampling device provided by the embodiment can neutralize the hydrochloric acid in the sampling tube 1 when the detecting piece 2 needs to be detached, so that the situation that the hydrochloric acid splashes to hurt people can not occur when the detecting piece 2 is detached.

The above description is merely an embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present utility model, and it is intended to cover the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (7)

1. Hydrochloric acid sampling device, its characterized in that includes:

one end of the sampling tube is used for absorbing hydrochloric acid sample liquid;

the detection piece is communicated with the other end of the sampling tube and is used for detecting the concentration of hydrochloric acid, and an exhaust port communicated with the inside of the detection piece is formed in the detection piece;

one end of the gas transmission pipe is communicated with the inside of the sampling pipe;

the shell is rotatably arranged at the other end of the gas pipe, a first cavity and a second cavity for storing weak base solution are arranged in the shell, a gas outlet hole communicated with the first cavity and a liquid outlet hole communicated with the second cavity are formed in the shell, and the shell rotates to drive the liquid outlet hole to be communicated with the inside of the gas pipe or drive the gas outlet hole to be communicated with the inside of the gas pipe;

the air bag is arranged on the shell, the inside of the air bag is respectively communicated with the first cavity and the second cavity, and external force is applied to the air bag, so that air in the air bag enters the first cavity and/or the second cavity.

2. The hydrochloric acid sampling device of claim 1, wherein the housing comprises:

the shell is rotatably arranged on the other end of the gas pipe, the air bag is arranged on the shell and communicated with the interior of the shell, and the air bag and the gas pipe are respectively positioned at the two opposite ends of the shell;

the baffle is installed the shell is close to on the inner wall of gas-supply pipe, the inner periphery side of baffle with the shell is close to the inner wall of gas-supply pipe encloses to establish and forms the second cavity, the periphery side of baffle with the inner periphery wall of shell and the shell is close to the inner wall of gas-supply pipe encloses to establish and forms first cavity, set up on the shell with the venthole that first cavity is linked together with the play liquid hole that second cavity is linked together.

3. The hydrochloric acid sampling device according to claim 2, wherein a liquid inlet hole and a gas inlet hole which are communicated with the inside of the gas pipe are formed in the other end of the gas pipe, and the shell rotates relative to the gas pipe to drive the liquid inlet hole to be communicated with the liquid outlet hole and separate the gas inlet hole and the gas outlet hole, or drive the gas inlet hole to be communicated with the gas outlet hole and separate the liquid inlet hole and the liquid outlet hole.

4. A hydrochloric acid sampling device as claimed in claim 3, further comprising:

one end of the infusion tube is positioned in the second cavity, and the other end of the infusion tube passes through the inner wall of the shell and is positioned outside the shell;

and the first shutoff valve is arranged at the other end of the infusion tube, which is positioned outside the shell, and is used for blocking and/or communicating with the infusion tube.

5. The hydrochloric acid sampling device of claim 1, wherein the detection member comprises:

the liquid accumulation tank is arranged at the other end of the sampling tube and communicated with the inside of the sampling tube, and the liquid accumulation tank is provided with the exhaust port communicated with the inside of the liquid accumulation tank;

the Baume meter is provided with a measuring end and a display end, wherein the measuring end is positioned in the liquid accumulation tank, and the display end penetrates through the liquid accumulation tank and is positioned outside the liquid accumulation tank.

6. The hydrochloric acid sampling device of claim 1, further comprising:

the buffer tank is inserted into one end of the sampling tube;

one end of the buffer tube is used for absorbing hydrochloric acid sample liquid, and the other end of the buffer tube is inserted into the buffer tank.

7. The hydrochloric acid sampling device of claim 6, further comprising:

the second shutoff valve is arranged on the sampling tube, the gas transmission tube is positioned between the second shutoff valve and the buffer tank, and the second shutoff valve is used for blocking and/or communicating the sampling tube.