CN219942489U - Quantitative mixing device for solution - Google Patents

Abstract

The utility model provides a quantitative solution mixing device, which belongs to the technical field of quantitative mixing devices and comprises a stirring barrel, a sealing cap, a stirring assembly, a collecting tank, an overflow pipe, a measuring cup, a sliding pipe, a positioning nut, a sealing plug and a driving column. The sealing cap is sleeved on the stirring barrel. The stirring assembly is arranged on the sealing cap. The collecting tank is arranged on the sealing cap. The overflow pipe is fixedly arranged on the collection tank and communicated with the interior of the collection tank. The bottom wall of the measuring cup is sleeved outside the overflow pipe in a sliding way, and a liquid outlet hole is formed in the bottom wall of the measuring cup. The sliding tube is fixedly arranged on the bottom wall of the measuring cup and communicated with the liquid outlet, and the sliding tube penetrates through the sealing cap in a sliding manner and is provided with a first external thread. The positioning nut is in threaded connection with the first external thread, and the positioning nut is in butt joint with the top surface of the sealing cap. The sealing plug is arranged in the liquid outlet hole and the sliding tube in a penetrating way. The driving column is fixedly connected with the sealing plug. The quantitative mixing device for the solution can avoid the problem that a device capable of quantitatively mixing multiple solutions is lacking in the market.

Description

Quantitative mixing device for solution

Technical Field

The utility model belongs to the technical field of quantitative mixing devices, and particularly relates to a quantitative mixing device for a solution.

Background

At present, products of the tail gas treatment fluid of the diesel vehicle on the market are good and bad, and the tail gas treatment fluid of the diesel vehicle needs to be detected. In the detection, a plurality of solutions are mixed in a certain ratio to prepare a standard solution. And then respectively detecting the standard solution and the tail gas treatment liquid, and finally comparing the detection result of the standard solution with the detection result of the tail gas treatment liquid. Currently, there is a lack of devices on the market that are capable of quantitatively mixing a plurality of solutions.

Disclosure of Invention

The utility model aims to provide a quantitative mixing device for solutions, which aims to solve the problem that a device capable of quantitatively mixing multiple solutions is lacking in the market.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a solution ration mixing arrangement, including agitator, closing cap, stirring subassembly, collection tank, overflow pipe, graduated flask, sliding tube, positioning nut, sealing plug and actuating cylinder. The opening of the stirring barrel is upward. The sealing cap is sleeved on the stirring barrel to seal the opening of the stirring barrel. The stirring assembly is arranged on the sealing cap and used for stirring the solution in the stirring barrel. The collecting tank is arranged on the sealing cap. The overflow pipe is vertically arranged, and is fixedly arranged on the collecting tank and communicated with the inside of the collecting tank. The opening of graduated flask upwards, the diapire slip cap of graduated flask is located outside the overflow pipe just the upper end of overflow pipe is located in the graduated flask, be equipped with out the liquid hole on the diapire of graduated flask. The sliding pipe is vertically arranged and fixedly arranged on the bottom wall of the measuring cup, the sliding pipe is communicated with the liquid outlet hole, the sliding pipe penetrates through the sealing cap in a sliding mode, the lower end of the sliding pipe is located in the stirring barrel, and a first external thread is arranged on the outer side face of the sliding pipe. The positioning nut is sleeved outside the sliding tube and is in threaded connection with the first external thread, and the positioning nut is abutted to the top surface of the sealing cap. The sealing plug is arranged in the liquid outlet hole in a penetrating way and the sliding tube. The driving column is vertically arranged and fixedly connected with the sealing plug, and the upper end of the driving column is positioned outside the measuring cup.

In one possible implementation, the solution quantitative mixing device further comprises a positioning plate. The locating plate level sets up, the locating plate is located in the graduated flask just be located drive post with between the sealing plug, the locating plate with the sealing plug with the equal fixed connection of drive post.

In one possible implementation, the solution quantitative mixing device further comprises a sealing ring. The lateral surface of sealing washer be equipped with the coaxial annular groove of sealing washer, the sealing washer passes through the annular groove card is located on the diapire of graduated flask, the sealing washer slip cap is located outside the overflow pipe.

In one possible implementation, the bottom of the collection tank is provided with a second external thread, and the solution quantitative mixing device further comprises a fixing sleeve. The fixed cover is located the bottom of collection tank and be equipped with second external screw thread threaded connection's first internal screw thread, fixed cover with closing cap fixed connection.

In one possible implementation, the solution quantitative mixing device further comprises a drive shaft and a first elongated plate. The drive shaft is vertically arranged and is positioned at one radial side of the collecting tank. The two ends of the first long slat are respectively and fixedly connected with the driving shaft and the overflow pipe.

In one possible implementation, the solution quantitative mixing device further comprises a second elongated plate, a threaded rod, a cover plate, and a gasket. The second long slat is horizontal to be set up and be located the top of graduated flask, the one end of second long slat with drive shaft fixed connection, the other end is equipped with the screw hole of vertical setting. The threaded rod penetrates through the threaded hole and is in threaded connection with the threaded hole. The sealing plate is horizontally arranged and fixedly arranged on the bottom surface of the threaded rod. The sealing gasket is fixedly arranged on the bottom surface of the sealing cover plate in a fitting mode, and when the threaded rod moves downwards, the sealing gasket can seal the top surface of the overflow pipe.

In one possible implementation manner, the outer side surface of the upper end of the stirring barrel is provided with a third external thread, and the sealing cap is internally provided with a second internal thread in threaded connection with the third external thread.

In one possible implementation, the stirring assembly includes a stirring shaft, a plurality of stirring blades, a bracket, and a drive motor. The stirring shaft is vertically arranged and can penetrate through the sealing cap in a rotating mode, the stirring shaft is provided with two limiting parts protruding outwards in the radial direction of the stirring shaft, and the two limiting parts are respectively located above and below the top wall of the sealing cap and are both in butt joint with the top wall of the sealing cap. The stirring blades are positioned in the stirring barrel and are fixedly arranged on the stirring shaft. The support is fixedly arranged on the sealing cap. The driving motor is fixedly arranged on the bracket, and an output shaft of the driving motor is connected with the stirring shaft.

In one possible implementation, the solution quantitative mixing device further comprises a limiting plate, a connecting plate, a fixing plate, a sliding shaft, an anti-falling plate and a compression spring. The limiting plate is horizontally arranged and is attached to the top surface of the positioning nut. The connecting plate is perpendicular to the first horizontal direction and fixedly connected with the limiting plate, and the first horizontal direction is arranged along the radial direction of the sliding tube. The fixed plate is located the connecting plate is kept away from the one side of sliding tube and with the connecting plate is parallel, the fixed plate with closing cap fixed connection. The sliding shafts are arranged in two, are arranged along the first horizontal direction and are fixedly connected with the connecting plate, and penetrate through the fixing plate in a sliding mode. The anti-falling plate is parallel to the connecting plate and is positioned on one side, far away from the connecting plate, of the fixing plate, and the anti-falling plate is fixedly connected with the two sliding shafts. The two compression springs are respectively sleeved on the two sliding shafts, and two ends of each compression spring are respectively abutted to the connecting plate and the fixing plate.

In one possible implementation, the solution quantitative mixing device further comprises a pull ring. The pull ring is fixedly connected with the anti-drop plate.

Compared with the prior art, the scheme provided by the embodiment of the utility model has the advantages that the initial state of the positioning nut is positioned at the upper part of the sliding tube, then the measuring cup is driven to slide to a proper height according to the volume of the solution required, namely, the distance between the top surface of the overflow pipe and the bottom wall of the measuring cup is adjusted, and when the liquid level of the solution in the measuring cup is level with the top surface of the overflow pipe, the volume of the solution in the measuring cup is the volume required to be measured. Then drive the locating nut and rotate and move down until locating nut and closing cap butt to restrict the graduated flask and slide downwards, pour one of them solution into the graduated flask at this moment, until the liquid level of solution and the top surface parallel and level of overflow pipe, if pour into excessive solution carelessly, the solution that the excess can flow into the collection tank along the overflow pipe into, thereby guarantee the accuracy of the solution volume of measuring, pinch the upper end of actuating cylinder and drive the sealing plug and slide out liquid outlet hole and sliding tube afterwards, solution in the graduated flask just like this can flow into the collection tank along the sliding tube. Repeating the above process until the amount of the solutions is all obtained. Finally, the solution in the stirring barrel is stirred through the stirring component, so that standard solution is manufactured, and the problem that a device capable of quantitatively mixing various solutions is lacking in the market is avoided.

Drawings

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

FIG. 1 is a schematic diagram of an axial sectional structure of a quantitative solution mixing device according to an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view of the portion A in FIG. 1;

FIG. 3 is an enlarged schematic view of part B in FIG. 1;

FIG. 4 is an enlarged schematic view of the part C in FIG. 1;

FIG. 5 is a schematic diagram of an axial measurement structure of a quantitative solution mixing device according to an embodiment of the present utility model;

fig. 6 is an enlarged schematic view of the portion D in fig. 5.

In the figure: 1. a stirring barrel; 2. sealing the cap; 31. a stirring shaft; 311. a limit part; 32. stirring the leaves; 33. a bracket; 34. a driving motor; 4. a collection tank; 5. an overflow pipe; 6. a measuring cup; 7. a sliding tube; 8. positioning a nut; 9. a sealing plug; 10. a drive column; 110. a positioning plate; 120. a seal ring; 130. a fixed sleeve; 140. a drive shaft; 150. a first elongate plate; 160. a second elongated slat; 170. a threaded rod; 180. a cover plate; 190. a sealing gasket; 200. a limiting plate; 210. a connecting plate; 220. a fixing plate; 230. a sliding shaft; 240. an anti-drop plate; 250. a compression spring; 260. and (5) a pull ring.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1, 3, 4 and 5, a quantitative solution mixing device according to the present utility model will be described. The quantitative solution mixing device comprises a stirring barrel 1, a sealing cap 2, a stirring assembly, a collecting tank 4, an overflow pipe 5, a measuring cup 6, a sliding pipe 7, a positioning nut 8, a sealing plug 9 and a driving column 10. The opening of the stirring barrel 1 is upward. The sealing cap 2 is sleeved on the stirring barrel 1 to seal the opening of the stirring barrel 1. The stirring assembly is arranged on the sealing cap 2 and is used for stirring the solution in the stirring barrel 1. The collection canister 4 is provided on the closure cap 2. The overflow pipe 5 is vertically arranged, and the overflow pipe 5 is fixedly arranged on the collection tank 4 and is communicated with the interior of the collection tank 4. The opening of the measuring cup 6 is upward, the bottom wall of the measuring cup 6 is sleeved outside the overflow pipe 5 in a sliding way, the upper end of the overflow pipe 5 is positioned in the measuring cup 6, and a liquid outlet hole is formed in the bottom wall of the measuring cup 6. The sliding tube 7 is vertically arranged and fixedly arranged on the bottom wall of the measuring cup 6, the sliding tube 7 is communicated with the liquid outlet hole, the sliding tube 7 slides to penetrate through the sealing cap 2, so that the lower end of the sliding tube 7 is positioned in the stirring barrel 1, and the outer side face of the sliding tube 7 is provided with first external threads. The positioning nut 8 is sleeved outside the sliding tube 7 and is in threaded connection with the first external thread, and the positioning nut 8 is in butt joint with the top surface of the sealing cap 2. The sealing plug 9 is arranged in the liquid outlet hole and the sliding tube 7 in a penetrating way. The driving column 10 is vertically arranged and fixedly connected with the sealing plug 9, and the upper end of the driving column 10 is positioned outside the measuring cup 6.

Compared with the prior art, the quantitative solution mixing device provided by the utility model has the advantages that the initial state of the positioning nut 8 is positioned at the upper part of the sliding tube 7, then the measuring cup 6 is driven to slide to a proper height according to the volume of the required solution, namely, the distance between the top surface of the overflow tube 5 and the bottom wall of the measuring cup 6 is adjusted, and when the liquid level of the solution in the measuring cup 6 is level with the top surface of the overflow tube 5, the volume of the solution in the measuring cup 6 is the volume to be measured. Then the positioning nut 8 is driven to rotate downwards until the positioning nut 8 is abutted with the sealing cap 2, so that the measuring cup 6 is limited to slide downwards, at the moment, one of the solutions is poured into the measuring cup 6 until the liquid level of the solution is flush with the top surface of the overflow pipe 5, if an excessive amount of solution is carelessly poured, the excessive solution flows into the collecting tank 4 along the overflow pipe 5, the accuracy of the measured solution volume is ensured, then the upper end of the driving column 10 is pinched, the sealing plug 9 is driven to slide out of the liquid outlet hole and the sliding pipe 7, and then the solution in the measuring cup 6 flows into the collecting tank 4 along the sliding pipe 7. Repeating the above process until the amount of the solutions is all obtained. Finally, the solution in the stirring barrel 1 is stirred through the stirring component, so that standard solution is manufactured, and the problem that a device capable of quantitatively mixing various solutions is lacking in the market is avoided.

In this embodiment, when the standard solution is prepared, the cap 2 is removed from the stirring vessel 1, and the standard solution in the stirring vessel 1 is poured out. At this time, the measuring cup 6 can be removed from the overflow pipe 5 and the slide tube 7 can be slid out of the closing cap 2, and then the measuring cup 6 and the slide tube 7 can be cleaned. The solution in the stirring tank 1 is then poured out and the overflow pipe 5 is cleaned, ready for the next test. The measuring cup 6 is provided with a number which can read the volume of the solution in the measuring cup 6.

In some embodiments, referring to fig. 3, the solution quantitative mixing device further includes a positioning plate 110. The locating plate 110 is horizontally arranged, the locating plate 110 is located in the measuring cup 6 and between the driving column 10 and the sealing plug 9, and the locating plate 110 is fixedly connected with the sealing plug 9 and the driving column 10. The drive post 10 is fixedly connected with the sealing plug 9 by a positioning plate 110. The sealing plug 9 can be prevented from completely entering the sliding tube 7 through the liquid outlet hole by limiting the positioning plate 110 by the bottom wall of the measuring cup 6.

In some embodiments, referring to fig. 3, the solution quantitative mixing device further comprises a sealing ring 120. The outer side of the sealing ring 120 is provided with an annular groove coaxial with the sealing ring 120, the sealing ring 120 is clamped on the bottom wall of the measuring cup 6 through the annular groove, and the sealing ring 120 is sleeved outside the overflow pipe 5 in a sliding manner. The sealing between the measuring cup 6 and the overflow pipe 5 can be ensured by the sealing ring 120.

In some embodiments, referring to fig. 4, the bottom of the collection tank 4 is provided with a second external thread, and the solution quantitative mixing device further includes a fixing sleeve 130. The fixed sleeve 130 is sleeved at the bottom of the collection tank 4 and is provided with a first internal thread in threaded connection with a second external thread, and the fixed sleeve 130 is fixedly connected with the sealing cap 2, so that the collection tank 4 and the overflow pipe 5 can be fixed on the sealing cap 2, and the collection tank 4 and the overflow pipe 5 are prevented from moving upwards.

In some embodiments, referring to fig. 1 and 4, the solution quantitative mixing device further includes a drive shaft 140 and a first elongated plate 150. The driving shaft 140 is vertically disposed and located at one side in the radial direction of the collection tank 4. Both ends of the first long strip plate 150 are fixedly connected with the driving shaft 140 and the overflow pipe 5, respectively. When the connection between the collection tank 4 and the fixed sleeve 130 is required to be disconnected or the collection tank 4 and the fixed sleeve 130 are connected, the collection tank 4 needs to be rotated, and the collection tank 4 is driven to rotate by the driving shaft 140, so that labor is saved.

In some embodiments, referring to fig. 1 and 3, the solution ration mixing device further includes a second elongated plate 160, a threaded rod 170, a closure plate 180, and a gasket 190. The second lath 160 is horizontally arranged and is located above the measuring cup 6, one end of the second lath 160 is fixedly connected with the driving shaft 140, and the other end of the second lath 160 is provided with a vertically arranged threaded hole. Threaded rod 170 is disposed through the threaded bore and is threadably coupled to the threaded bore. Cover plate 180 is horizontally disposed and secured to the bottom surface of threaded rod 170. The gasket 190 is attached to the bottom surface of the cover plate 180, and when the threaded rod 170 moves downward, the gasket 190 can cover the top surface of the overflow pipe 5. After the liquid level of the solution in the measuring cup 6 is flush with the top surface of the overflow pipe 5, the threaded rod 170 is driven to rotate, so that the sealing gasket 190 seals the top surface of the overflow pipe 5, and then the sealing plug 9 is pulled out of the liquid outlet hole and the sliding pipe 7, so that the solution can be prevented from flowing into the overflow pipe 5 due to shaking of the liquid level, and inaccurate solution measurement is further caused.

In some embodiments, the outer side surface of the upper end of the stirring barrel 1 is provided with a third external thread, and the inside of the sealing cap 2 is provided with a second internal thread in threaded connection with the third external thread, so that the sealing cap 2 and the stirring barrel 1 are fixed together, and the overall stability of the device is facilitated in the operation process. After the screw connection between the unsealing cap 2 and the stirring barrel 1 is broken, the sealing cap 2 can be removed from the stirring barrel 1.

In some embodiments, referring to fig. 1 and 2, the stirring assembly includes a stirring shaft 31, a plurality of stirring vanes 32, a bracket 33, and a drive motor 34. The stirring shaft 31 is vertically arranged and can penetrate the sealing cap 2 in a rotating manner, the stirring shaft 31 is provided with two limiting parts 311 protruding outwards along the radial direction of the stirring shaft 31, and the two limiting parts 311 are respectively positioned above and below the top wall of the sealing cap 2 and are respectively abutted with the top wall of the sealing cap 2. The stirring blades 32 are positioned in the stirring barrel 1 and are fixedly arranged on the stirring shaft 31. The bracket 33 is fixed to the cap 2. The driving motor 34 is fixedly arranged on the bracket 33, and an output shaft of the driving motor 34 is connected with the stirring shaft 31. The two limiting portions 311 may enable the stirring shaft 31 to be provided on the cap 2. The output shaft of the driving motor 34 drives the stirring shaft 31 to rotate, thereby driving the plurality of stirring blades 32 to stir the solution in the stirring barrel 1.

In some embodiments, referring to fig. 5 and 6, the solution quantitative mixing apparatus further includes a limiting plate 200, a connection plate 210, a fixing plate 220, a sliding shaft 230, a drop-off prevention plate 240, and a compression spring 250. The limiting plate 200 is horizontally arranged and is attached to the top surface of the positioning nut 8. The connection plate 210 is perpendicular to the first horizontal direction and fixedly connected to the limiting plate 200, and the first horizontal direction is disposed along the radial direction of the sliding tube 7. The fixing plate 220 is located at one side of the connecting plate 210 away from the sliding tube 7 and parallel to the connecting plate 210, and the fixing plate 220 is fixedly connected with the sealing cap 2. The number of the sliding shafts 230 is two, the sliding shafts 230 are arranged along the first horizontal direction and fixedly connected with the connecting plate 210, and the sliding shafts 230 penetrate through the fixed plate 220 in a sliding manner. The anti-falling plate 240 is parallel to the connecting plate 210 and is positioned on one side of the fixing plate 220 away from the connecting plate 210, and the anti-falling plate 240 is fixedly connected with the two sliding shafts 230. The two compression springs 250 are respectively sleeved on the two sliding shafts 230, and two ends of the compression springs 250 are respectively abutted with the connecting plate 210 and the fixing plate 220. When the sealing plug 9 is pulled out upwards, the measuring cup 6 and the sliding tube 7 can be prevented from moving upwards by limiting the positioning nut 8 by the limiting plate 200. When the height of the measuring cup 6 needs to be adjusted, the sliding shaft 230 is driven to slide, so that the connecting plate 210 presses the compression spring 250 and the limiting plate 200 to slide away from the positioning nut 8. When the slide tube 7 slides out of the cap 2, the escape prevention plate 240 can prevent the slide shaft 230 from sliding out of the fixing plate 220.

In some embodiments, referring to fig. 6, the solution quantitative mixing device further comprises a pull ring 260. The pull ring 260 is fixedly connected with the drop-off preventing plate 240. It is convenient to drive the sliding shaft 230 to slide through the pull ring 260.

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, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. A quantitative mixing device for a solution, comprising:

a stirring barrel with an upward opening;

the sealing cap is sleeved on the stirring barrel to seal the opening of the stirring barrel;

the stirring assembly is arranged on the sealing cap and is used for stirring the solution in the stirring barrel;

the collecting tank is arranged on the sealing cap;

the overflow pipe is vertically arranged, fixedly arranged on the collecting tank and communicated with the inside of the collecting tank;

the bottom wall of the measuring cup is sleeved outside the overflow pipe in a sliding way, the upper end of the overflow pipe is positioned in the measuring cup, and a liquid outlet hole is formed in the bottom wall of the measuring cup;

the sliding pipe is vertically arranged and fixedly arranged on the bottom wall of the measuring cup, the sliding pipe is communicated with the liquid outlet hole, and the sliding pipe penetrates through the sealing cap in a sliding manner, so that the lower end of the sliding pipe is positioned in the stirring barrel, and a first external thread is arranged on the outer side surface of the sliding pipe;

the positioning nut is sleeved outside the sliding tube and is in threaded connection with the first external thread, and the positioning nut is abutted with the top surface of the sealing cap;

the sealing plug is arranged in the liquid outlet hole in a penetrating way and the sliding tube in a penetrating way; and

the driving column is vertically arranged and fixedly connected with the sealing plug, and the upper end of the driving column is positioned outside the measuring cup.

2. A solution quantitative mixing device according to claim 1, further comprising:

the locating plate is horizontally arranged, is positioned in the measuring cup and between the driving column and the sealing plug, and is fixedly connected with the sealing plug and the driving column.

3. A solution quantitative mixing device according to claim 1, further comprising:

the outer side face of the sealing ring is provided with an annular groove coaxial with the sealing ring, the sealing ring is clamped on the bottom wall of the measuring cup through the annular groove, and the sealing ring is sleeved outside the overflow pipe in a sliding mode.

4. The apparatus for quantitative mixing of solutions according to claim 1, wherein the bottom of the collection tank is provided with a second external screw thread, and the apparatus for quantitative mixing of solutions further comprises:

the fixed sleeve is sleeved at the bottom of the collecting tank and is provided with a first internal thread in threaded connection with the second external thread, and the fixed sleeve is fixedly connected with the sealing cap.

5. The quantitative mixing device for solution according to claim 4, further comprising:

the driving shaft is vertically arranged and is positioned at one radial side of the collecting tank;

and two ends of the first long slat are fixedly connected with the driving shaft and the overflow pipe respectively.

6. The quantitative mixing device for solution according to claim 5, further comprising:

the second long slat is horizontally arranged and is positioned above the measuring cup, one end of the second long slat is fixedly connected with the driving shaft, and the other end of the second long slat is provided with a vertically arranged threaded hole;

the threaded rod is arranged in the threaded hole in a penetrating way and is in threaded connection with the threaded hole;

the sealing plate is horizontally arranged and fixedly arranged on the bottom surface of the threaded rod;

and the sealing gasket is fixedly attached to the bottom surface of the sealing cover plate, and can seal the top surface of the overflow pipe when the threaded rod moves downwards.

7. The quantitative mixing device for solution according to claim 1, wherein the outer side surface of the upper end of the stirring barrel is provided with a third external thread, and the sealing cap is internally provided with a second internal thread in threaded connection with the third external thread.

8. A solution metering mixing apparatus as recited in claim 1, wherein said stirring assembly comprises:

the stirring shaft is vertically arranged and can penetrate through the sealing cap in a rotating way, the stirring shaft is provided with two limiting parts protruding outwards along the radial direction of the stirring shaft, and the two limiting parts are respectively positioned above and below the top wall of the sealing cap and are respectively abutted with the top wall of the sealing cap;

the stirring blades are positioned in the stirring barrel and are fixedly arranged on the stirring shaft;

the bracket is fixedly arranged on the sealing cap;

the driving motor is fixedly arranged on the bracket, and an output shaft of the driving motor is connected with the stirring shaft.

9. A solution quantitative mixing device according to claim 1, further comprising:

the limiting plate is horizontally arranged and is attached to the top surface of the positioning nut;

the connecting plate is vertical to the first horizontal direction and is fixedly connected with the limiting plate, and the first horizontal direction is arranged along the radial direction of the sliding tube;

the fixing plate is positioned at one side of the connecting plate far away from the sliding tube and is parallel to the connecting plate, and the fixing plate is fixedly connected with the sealing cap;

the two sliding shafts are arranged along the first horizontal direction and fixedly connected with the connecting plate, and the sliding shafts penetrate through the fixing plate in a sliding manner;

the anti-falling plate is parallel to the connecting plate and is positioned on one side of the fixing plate away from the connecting plate, and the anti-falling plate is fixedly connected with the two sliding shafts;

the two compression springs are respectively sleeved on the two sliding shafts, and two ends of each compression spring are respectively abutted with the connecting plate and the fixing plate.

10. A solution metering mixing apparatus as set forth in claim 9, further comprising:

and the pull ring is fixedly connected with the anti-falling plate.