CN221260504U - Sampling device for highly corrosive liquid - Google Patents

Abstract

The utility model discloses a sampling device for highly corrosive liquid, which solves the problems of complex operation, safety and accuracy in the prior art of repeatedly measuring the highly corrosive liquid. The utility model comprises a frame body, a liquid storage bottle and a metering assembly, wherein the liquid storage bottle is reversely placed on the frame body and is connected with the metering assembly through a conduit, and a pressure regulating assembly is arranged at the outlet of the liquid storage bottle; the metering assembly is arranged on the frame body, and a liquid outlet of the metering assembly is provided with a switch piece. The utility model sets the switch at the lower part of the metering component, can control the flow speed in time, improves the accuracy of liquid measurement, and transfers the liquid in the liquid storage bottle, the conduit and the metering component, thereby avoiding the safety problem caused by misoperation. The frame body, the first fixer and the second fixer effectively fix the liquid storage tank and the metering assembly, and are convenient to detach.

Description

Sampling device for highly corrosive liquid

Technical Field

The utility model relates to the technical field of experimental instruments and equipment, in particular to a sampling device for a highly corrosive liquid.

Background

During the experiment, it is often necessary to measure some highly corrosive liquids, such as concentrated sulfuric acid, concentrated nitric acid, aqua regia, etc. The method for taking the highly corrosive liquid in the laboratory is mainly a dosage taking method, namely, firstly, a measuring cylinder is placed stably, then the liquid is poured into the measuring cylinder to the vicinity of the required scale mark, and finally, a rubber head dropper is used for dripping the liquid to the required scale mark. This approach is relatively simple and accurate, but still suffers from certain drawbacks: 1. when the liquid with strong corrosiveness is measured, the intense mind is generated, so that the hand shakes out the liquid, the spilled liquid can fall on the hand and body of an operator to hurt the operator, and the liquid can also fall on a laboratory table to damage a tabletop, so that the fault is a possible occurrence in the laboratory. 2. Because of human factors, the sample is easy to pour too much to cause waste, the time required by the experiment is prolonged, and the accuracy of the experiment is affected. 3. In the experimental process, a certain amount of samples may need to be added for multiple times, and if the sample is sampled for multiple times by using a quantitative sampling method, the experimental difficulty and the experimental risk are increased.

The Chinese patent with publication number CN218012818U and application day 2022-08-12 discloses a quantitative liquid taking device, which comprises a cylinder body and scale marks, wherein the inner side of a connecting plate is spirally connected with a limiting mechanism, when liquid is required to be taken quantitatively in a chemical experiment, a handle is firstly used for carrying a sleeve to spirally rotate on the inner side of the connecting plate, the position of a limiting disc on the inner side of the cylinder body is regulated, the upward moving distance of a piston head is regulated through the limiting disc, so that the quantitative liquid taking of the cylinder body is realized, under the limiting of the limiting disc, although the quantitative liquid taking can be realized by a worker, the quantitative liquid taking can be completed through the cylinder body, then the solution can be directly poured into an experimental instrument, the transferring times of the solution are reduced, and the risk of solution sprinkling is reduced. However, for the repeated liquid taking of the strong corrosive liquid, the process is complicated by adopting the mode, and the liquid taking time is wasted.

Disclosure of utility model

Aiming at the defects in the background technology, the utility model provides a strong corrosive liquid sampling device, which solves the problems of complex operation, safety and accuracy existing in the prior art when strong corrosive liquid is measured for many times.

The technical scheme of the utility model is realized as follows: the liquid storage bottle is reversely placed on the frame body and is connected with the metering assembly through a guide pipe, and a pressure regulating assembly is arranged at an outlet of the liquid storage bottle; the metering assembly is arranged on the frame body, and a liquid outlet of the metering assembly is provided with a switch piece.

Further, the metering assembly comprises a scale tube, the switch piece is a liquid outlet switch, a liquid inlet is formed in the side wall of the scale tube, the switch is arranged at the liquid outlet at the bottom of the scale tube, one end of the guide tube is communicated with the scale tube through the liquid inlet, and the other end of the guide tube is connected with the pressure regulating assembly through the liquid inlet switch.

Further, the metering assembly comprises a scale tube, the switch piece is a three-way valve, the three-way valve is arranged at a liquid outlet at the bottom of the scale tube, one end of the guide tube is connected to the three-way valve, and the other end of the guide tube is connected with the pressure regulating assembly. And a sealing plug is detachably connected to the pipe orifice of the scale pipe.

Furthermore, the scale tube is detachably connected to the frame body through a second fixer. The second fixer is a hoop or a supporting pore plate, one end of the hoop is detachably connected to the frame body, and the other end of the hoop is connected through a bolt and fixes the scale tube; one end of the supporting pore plate is connected to the vertical rod, and the other end of the supporting pore plate is provided with a through hole matched with the metering assembly.

Further, a jacking screw is arranged on the supporting pore plate, and one end of the jacking screw extends into the through hole and is connected with the cushion block.

Further, the pressure regulating assembly comprises a T-shaped pipe, the upper portion of the T-shaped pipe extends into the liquid storage bottle through the bottle cap, the lower portion of the T-shaped pipe is connected with the guide pipe, and the transverse pipe of the T-shaped pipe is connected with one end of the capillary pipe through the connecting pipe.

Further, the liquid storage bottle is detachably connected to the frame body through the first fixing device.

Further, the first fixer comprises a fixing frame for fixing the liquid storage bottle body and a positioning piece for supporting the bottle mouth, the fixing frame comprises two arc plates which are symmetrically arranged, one ends of the two arc plates are connected with the vertical rod through a supporting rod, and the other ends of the two arc plates are connected through a locking bolt; the locating piece comprises a supporting ring, and the inner diameter of the supporting ring is smaller than the diameter of the liquid storage bottle body.

The beneficial effects of the utility model are as follows: 1. according to the utility model, the switch piece is arranged at the lower part of the metering assembly, so that the strong corrosion flow rate can be controlled in time, the accuracy of liquid measurement is improved, the pressure regulating assembly is matched with the liquid storage bottle, the guide pipe and the metering assembly to realize liquid transportation, direct contact with operators is avoided, and the safety problem caused by misoperation is effectively avoided.

2. The frame body, the first fixer and the second fixer effectively fix the liquid storage bottle and the metering assembly, and are convenient to detach. The liquid storage bottle and the bottle cap are non-fixedly installed, and the bottle cap can be detached and cleaned, so that the liquid storage bottle is suitable for various liquid storage bottles.

3. The scale tube in the metering assembly is matched with the switch piece, so that potential safety hazards of forgetting to turn off the switch in a short time can be reduced. The bottle mouth on the upper part of the graduated tube is provided with a sealing plug which is detachably connected, so that the graduated tube is convenient to clean.

4. The three-way valve switch can realize multidirectional liquid circulation, and the convenience of experiments is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural diagram of embodiment 2.

Fig. 3 is a top view of a support orifice plate.

Fig. 4 is a cross-sectional view of a three-way valve.

In the figure: 1. the liquid storage device comprises a base, 2, a conduit, 3, a liquid inlet switch, 4, a T-shaped pipe, 5, a connecting pipe, 6, a capillary, 7, a bottle cap, 8, a supporting ring, 9, a liquid storage bottle, 10, a locking bolt, 11, a beaker, 12, a liquid outlet switch, 13, a scale pipe, 14a, a hoop, 14b, a supporting hole plate, 15, a jacking screw, 16, a sealing plug, 17, a vertical rod, 18, an arc-shaped plate, 19, a supporting rod, 20, a three-way valve, 21 and an arc pad.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, embodiment 1, a highly corrosive liquid sampling device, including support body, stock solution bottle 9 and metering assembly, install bottle lid 7 on the stock solution bottle 9, stock solution bottle 9 falls to put on the support body, and stock solution bottle 9 passes through pipe 2 and is connected with metering assembly, and the exit of stock solution bottle 9 is provided with pressure adjusting part, and pressure adjusting part can adopt corrosion-resistant material preparation to be similar to the pjncture needle and the air inlet device of transfer line for adjust the pressure in the stock solution bottle, be convenient for liquid outflow in the stock solution bottle. The metering assembly is arranged on the frame body, a switch 12 is arranged at the liquid outlet of the metering assembly, and the switch 12 is used for controlling the flow of liquid in the liquid storage bottle 9. The lower part of the metering assembly is provided with the switch 12, so that the flow speed can be controlled in time, the accuracy of liquid measurement is improved, the liquid is transported in the liquid storage bottle 9, the guide pipe 2 and the metering assembly, direct contact with operators is avoided, and the safety problem caused by misoperation is effectively avoided. The device directly combines the liquid storage bottle 9 and the bottle cap 7 tightly, then fixes the liquid storage bottle 9 and the bottle cap 7 on the frame body, and the liquid storage bottle 9 is reversely buckled, so that liquid flows into the sampling container by using the principle of transfusion, and the danger of dumping corrosive liquid is avoided.

In this embodiment, the metering assembly includes a scale tube 13, a liquid inlet is arranged on the side wall of the scale tube 13, a switch element is arranged at the liquid outlet of the bottom of the scale tube 13, one end of the conduit 2 passes through the liquid inlet and is communicated with the scale tube 13, and the other end of the conduit 2 is connected with the pressure regulating assembly through a liquid inlet switch 12. The scale tube 13 is matched with the liquid inlet switch 12, so that potential safety hazards that the switch 12 is forgotten to be closed in a short time can be reduced. The bottom of the scale tube 13 is provided with a thin tube, the scale tube 13 and the thin tube adopt arc transition, and the switch 12 is arranged at the lower part of the thin tube and used for controlling the outflow of liquid in the scale tube 13. The catheter 2 is formed by connecting a right-angle pipe and a transverse pipe, the liquid inlet switch 12 is arranged on the upper portion of the right-angle pipe, the outflow of liquid in the liquid outlet bottle is controlled, the end portion of the transverse pipe is arranged in the scale pipe 13, the liquid can conveniently enter the scale pipe 13, the whole process liquid is not contacted with people, and when the liquid amount in the scale pipe 13 is enough, the liquid inlet switch 12 is closed. When the liquid in the scale tube 13 is taken, the switch 12 at the lower part of the scale tube 13 is turned on. The liquid taking method is suitable for single or multiple liquid taking, and the liquid taking is convenient and quick.

As shown in fig. 2, in embodiment 2, a highly corrosive liquid sampling device, unlike embodiment 1, the metering assembly includes a scale tube 13, the switch member is a three-way valve 20, the inside of the three-way valve 20 is provided with a T-shaped structure tube, the T-shaped structure tube is convenient for controlling the liquid in the liquid storage tube to enter the scale tube 13, and the liquid in the scale tube 13 is convenient for taking, and the liquid in the liquid storage bottle 9 can be directly taken, so that the taking modes are various. One end of the conduit 2 is connected to the three-way valve 20, and the other end of the conduit 2 is connected to the pressure regulating assembly. The upper portion of the graduated tube 13 is detachably connected with a sealing plug 16, and the sealing plug 16 which is detachably connected is arranged on the upper portion of the graduated tube 13 so as to be convenient for cleaning the metering assembly. The sealing plug 16 facilitates the later cleaning of the graduated tube 13, and in certain cases, the required liquid can be added into the graduated tube 13 by pulling out the sealing plug 16. The three-way valve 20 and the switch 12 can realize multidirectional liquid circulation, so that the convenience of experiments is improved.

The other structures are the same as those of embodiment 1.

As shown in fig. 1, in embodiment 3, a highly corrosive liquid sampling apparatus is different from embodiment 2 in that the scale tube 13 is detachably attached to the frame body by a second holder. The frame body, the first fixer and the second fixer effectively fix the liquid storage tank and the metering assembly, and are convenient to detach. The second fixer is a hoop 14a or a supporting pore plate 14b, one end of the hoop 14a is detachably connected to the frame body, and the other end of the hoop is connected through a bolt and fixes the scale tube 13; the staple bolt is current device, can directly select suitable size to install. One end of the supporting pore plate 14b is connected to the vertical rod 17, and the other end is provided with a through hole matched with the metering assembly. The second fixer comprises two supporting hole plates 14 which are arranged up and down, one end of each supporting hole plate 14 is connected to the corresponding vertical rod, the other end of each supporting hole plate 14 is provided with a through hole matched with the metering assembly, and the scale tube of the metering assembly is arranged in the through hole and cannot slide down from the through hole. The supporting hole plate 14 is provided with a jacking screw 15, and one end of the jacking screw 15 extends into the through hole and is connected with the cushion block 21. The cushion block 21 is a rubber pad. The rubber pad can avoid the damage of the jacking screw 15 to the scale tube 13.

The other structures are the same as those of embodiment 2.

Embodiment 4, a highly corrosive liquid sampling device, which is different from embodiment 3, wherein the pressure adjusting component comprises a T-shaped tube 4, the upper part of the T-shaped tube 4 extends into a liquid storage bottle 9, the lower part of the T-shaped tube 4 is connected with a conduit 2, a transverse tube of the T-shaped tube 4 is connected with one end of a capillary tube 6 through a connecting tube 5, and the other end of the capillary tube 6 is higher than the liquid level. The capillary tube 6 is used for enabling the liquid storage bottle 9 to be communicated with air, the upper portion of the capillary tube 6 is higher than the liquid plane, liquid can be prevented from flowing out of the capillary tube 6 when the liquid storage bottle is used, constructors are prevented from being injured, and the experimental safety problem is reduced.

The other structures are the same as those of embodiment 3.

Embodiment 5, a highly corrosive liquid sampling device, it is different from embodiment 4, in this embodiment, the fixer one includes the mount that is used for fixing stock solution bottle 9 body and is used for propping up the setting element of bottleneck, the mount includes two arc 18 that the symmetry set up, the arc is the elastic plate, the one end of two arc 18 is connected with montant 17 through bracing piece 19, bracing piece and montant complex one end sets up the through-hole, and threaded connection has the jackscrew on the bracing piece, the jackscrew is used for propping up the mobile jib and fixes the bracing piece on the montant. The other ends of the two arc plates 18 are connected through the locking bolt 10; the two arc plates fix the liquid storage bottle through the locking bolt. The locating piece comprises a supporting ring 8, the supporting ring is fixed on the vertical rod, the inner diameter of the supporting ring 8 is smaller than the diameter of the bottle body of the liquid storage bottle 9, and experimental accidents caused by sliding of the liquid storage bottle from the first fixer are prevented.

The other structures are the same as those of embodiment 4.

Embodiment 6, a highly corrosive liquid sampling device, mainly comprises a liquid storage bottle 9, a metering assembly, a frame body, a switch 12, a connecting pipe 5, a conduit 2, a T-shaped pipe and the like. The liquid storage bottle 9 is fixed on the frame body by the liquid storage bottle 9 fixer, and sampling device has been fixed effectively to frame body, liquid storage bottle 9 fixer, metering assembly fixer etc. also be convenient for the dismantlement of laboratory glassware. The metering assembly is of sufficient length to reduce the potential safety hazard of forgetting to turn off the switch 12 in a short period of time. The center of stock solution bottle 9 fixer has the through-hole, and the through-hole can make stock solution bottle 9 get into just, and the bottleneck of stock solution bottle 9 can expose completely, stock solution bottle 9 fixer mainly comprises two semicircle rings, fixes through quick connection mode. The threaded bottleneck of the liquid storage bottle 9 is matched with the threaded cover opening of the bottle cover 7, so that the liquid storage bottle can be tightly connected and can be conveniently detached. The liquid storage bottle 9 and the bottle cap 7 are non-fixedly installed, the bottle cap 7 can be detached and cleaned, and the liquid storage bottle is suitable for various liquid storage bottles 9. The central through hole of the bottle cap 7 is communicated with a T-shaped pipe, and the T-shaped pipe is communicated with the capillary tube 6 through a connecting pipe 5. The lower part of the T-shaped pipe is communicated with a switch 12, the switch 12 can control the flow rate of liquid, and the switch 12 is connected with the catheter 2 through a connecting pipe 5. The scale of the metering assembly and the switch 12 connected with the lower part thereof can timely control the flow speed and improve the accuracy of liquid measurement. The conduit 2 is connected with the connecting pipe 5 in the horizontal direction of the conduit 2 at a 90-degree angle. An opening is arranged below the side face of the metering assembly, and a connecting pipe 5 is connected with the metering assembly. The metering assembly is provided with scales, is convenient to meter, is fixed on the frame body by a metering assembly fixer, and is provided with a sealing plug 16 at the upper part and a switch part at the lower part. The metering assembly with its associated sealing plug 16 may facilitate cleaning of the metering assembly. The metering assembly fixer mainly comprises two semicircular rings and is fixed in a quick connection mode. The sealing plug 16 is provided with a handle, and the handle is matched with the pipe diameter of the metering assembly. The switch 12 controls the flow rate of the liquid and has an outlet in the lower part for delivering the liquid into the beaker 11. Before the experiment starts, the bottle cap 7 is tightly buckled on the liquid storage bottle 9, the metering assembly and the liquid storage bottle 9 are fixed on the frame body, the connecting pipe 5, the guide pipe 2, the capillary tube 6 and the like are well connected, and the flow rate of liquid is controlled through the switch piece. The liquid storage bottle 9 and the bottle cap 7 are directly and tightly combined, then the liquid storage bottle 9 and the bottle cap 7 are fixed on the frame body, and the liquid storage bottle 9 is reversely buckled, so that liquid flows into the sampling container by using the principle of transfusion, and the danger of dumping corrosive liquid is avoided.

The control system for taking the liquid device can have 2 designs, scheme one: as shown in fig. 1, the switch 12 terminates the outflow of the liquid in the liquid storage bottle 9 in time, and the switch member controls the flow rate of the metering assembly, so as to measure a certain volume of liquid more accurately; scheme II: as shown in fig. 2, the liquid outlet switch 12 in fig. 1 is removed, the three-way valve 20 replaces the liquid outlet switch 12 and the liquid inlet switch 3 in fig. 1, and different liquid circulation modes are obtained by rotating the handle of the three-way valve 20. The liquid circulation mode is that the liquid of the liquid storage bottle 9 flows into the metering assembly, and the lower end of the metering assembly is kept in a closed state. On the basis of fig. 3, by rotating the handle of the three-way valve 20, the tee-shaped pipe is rotated anticlockwise by 90 degrees, and the liquid circulation mode at this time is that the liquid of the liquid storage bottle 9 is kept in a static state, and the liquid flows into the beaker 11 from the metering assembly. The multi-directional fluid flow of the three-way valve 20 increases the convenience of the experiment.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. A highly corrosive liquid sampling device, characterized by: the liquid storage device comprises a frame body, a liquid storage bottle (9) and a metering assembly, wherein the liquid storage bottle (9) is inversely placed on the frame body, the liquid storage bottle (9) is connected with the metering assembly through a guide pipe (2), and a pressure adjusting assembly is arranged at an outlet of the liquid storage bottle (9); the metering assembly is arranged on the frame body, and a liquid outlet of the metering assembly is provided with a switch piece.

2. The highly corrosive liquid sampling apparatus of claim 1, wherein: the metering assembly comprises a scale tube (13), the switch piece is a liquid outlet switch (12), a liquid inlet is formed in the side wall of the scale tube (13), the switch (12) is arranged at the liquid outlet at the bottom of the scale tube (13), one end of the guide tube (2) is communicated with the scale tube (13) through the liquid inlet, and the other end of the guide tube (2) is connected with the pressure adjusting assembly through the liquid inlet switch (3).

3. The highly corrosive liquid sampling apparatus of claim 1, wherein: the metering assembly comprises a scale tube (13), the switch piece is a three-way valve (20), the three-way valve (20) is arranged at a liquid outlet at the bottom of the scale tube (13), one end of the guide tube (2) is connected to the three-way valve (20), and the other end of the guide tube (2) is connected with the pressure regulating assembly.

4. A highly corrosive liquid sampling device according to claim 2 or 3, wherein: a sealing plug (16) is detachably connected to the pipe orifice of the scale pipe (13).

5. The highly corrosive liquid sampling device of claim 4, wherein: the scale tube (13) is detachably connected to the frame body through a second fixer.

6. The highly corrosive liquid sampling device of claim 5, wherein: the second fixer is a hoop (14 a) or a supporting pore plate (14 b), one end of the hoop (14 a) is detachably connected to the frame body, and the other end of the hoop is connected through a bolt and fixes the scale tube (13); one end of the supporting pore plate (14 b) is connected to the vertical rod (17), and the other end of the supporting pore plate is provided with a through hole matched with the metering assembly.

7. The highly corrosive liquid sampling device of claim 6, wherein: the supporting hole plate (14 b) is provided with a jacking screw (15), and one end of the jacking screw (15) extends into the through hole and is connected with the cushion block (21).

8. The highly corrosive liquid sampling device according to any one of claims 1 to 3, 5 to 7, wherein: the pressure regulating assembly comprises a T-shaped tube (4), the upper portion of the T-shaped tube (4) penetrates through the bottle cap (7) to extend into the liquid storage bottle (9), the lower portion of the T-shaped tube (4) is connected with the guide tube (2), and the transverse tube of the T-shaped tube (4) is connected with one end of the capillary tube (6) through the connecting tube (5).

9. The highly corrosive liquid sampling device of claim 8, wherein: the liquid storage bottle (9) is detachably connected to the frame body through a first fixer.

10. The highly corrosive liquid sampling device of claim 9, wherein: the first fixer comprises a fixing frame for fixing the body of the liquid storage bottle (9) and a positioning piece for supporting the bottle mouth, the fixing frame comprises two arc plates (18) which are symmetrically arranged, one ends of the two arc plates (18) are connected with the vertical rods (17) through supporting rods (19), and the other ends of the two arc plates (18) are connected through locking bolts (10); the locating piece comprises a supporting ring (8), and the inner diameter of the supporting ring (8) is smaller than the diameter of a bottle body of the liquid storage bottle (9).