阅读说明：本技术 缓冲罐 (Buffer tank ) 是由 曹畅 范艺斌 王亮 邹雄伟 于 2020-05-13 设计创作，主要内容包括：本发明公开了一种用于工业生产的缓冲罐,包括：容量罐本体,容量罐本体上开设有第一开口、第二开口、第三开口,第一开口和第二开口分设在容量罐本体的周侧壁上,第三开口沿容量罐本体的铅垂方向开设于容量罐本体的底部。还包括设置在容量罐本体上、与第三开口的内部通道流量可调节的设置的调节构件,调节构件一端可活动的固定在容量罐本体上,相对设置的另一端的外周面与第三开口的内部形状尺寸适配。(The invention discloses a buffer tank for industrial production, which comprises: the volume tank body is provided with a first opening, a second opening and a third opening, the first opening and the second opening are respectively arranged on the peripheral side wall of the volume tank body, and the third opening is arranged at the bottom of the volume tank body along the vertical direction of the volume tank body. The adjustable volume tank is characterized by further comprising an adjusting component which is arranged on the volume tank body and is adjustable with the flow of the internal channel of the third opening, one end of the adjusting component is movably fixed on the volume tank body, and the outer peripheral surface of the other end, which is arranged oppositely, is matched with the inner shape and size of the third opening.)

1. A surge tank, comprising:

the volume tank comprises a volume tank body (11), wherein a first opening (111), a second opening (112) and a third opening (113) are formed in the volume tank body (11), the first opening (111) and the second opening (112) are respectively formed in the peripheral side wall of the volume tank body (11), and the third opening (113) is formed in the bottom of the volume tank body (11);

the flow regulating device further comprises a flow regulating component (12) which is arranged on the capacity tank body (11) and is adjustable with the flow of the internal channel of the third opening (113), one end of the flow regulating component (12) is movably fixed on the capacity tank body (11), and the outer peripheral surface of the other end which is arranged oppositely is matched with the internal shape and size of the third opening (113).

2. The surge tank, as defined in claim 1,

the first opening (111) and the second opening (112) are oppositely arranged at intervals relative to a plumb surface of the capacity tank body (11); or

The first opening (111) and the second opening (112) are positioned on the same side wall surface of the capacity tank body (11); or

The first opening (111) and the second opening (112) are respectively arranged on two adjacent side wall surfaces of the capacity tank body (11).

3. The surge tank, according to claim 1 or 2,

the first opening (111) is a liquid inlet, the second opening (112) is a liquid outlet, and the third opening (113) is a liquid outlet; the flow area of the third opening (113) is controlled by the flow regulating component (12), so that the liquid level height of the solution in the volume tank body (11) is regulated, and the flow balance of the second opening (112) is ensured; or

The third opening (113) is a liquid inlet, the first opening (111) is a liquid outlet, and the second opening (112) is a liquid outlet.

4. The surge tank, as defined in claim 3,

the upper opening end of the tank body (115) of the capacity tank body (11) is a fifth opening, and a cover plate (116) for opening or closing the tank body (115) is arranged at the fifth opening;

the flow regulating component (12) is connected to the cover plate (116), the bottom end of the flow regulating component (12) is used for being inserted into or blocking the third opening (113) to regulate the flow of the third opening (113), and the upper opening end of the tank body (115) is also used as an access hole.

5. The surge tank, as defined in claim 4,

the bottom plate of the tank body (115) is a conical plate;

the third opening (113) is located in the center of the conical plate.

6. The surge tank, as defined in claim 4,

the fourth opening (114) is positioned right above the second opening (112) and is communicated with the return pipe, and the fourth opening (114) is used for enabling the solution to be analyzed in the tank body (115) to overflow outwards and then to return to the return pipe.

7. The surge tank, as defined in claim 4,

the flow regulating component (12) comprises a plug (121) inserted into or shielded from the third opening (113), the plug (121) is connected with a driving rod (122) used for driving the plug to move up and down, the upper end of the driving rod (122) is in threaded connection with the upper cover (116), so that the plug (121) is driven to move up and down when the driving rod (122) is rotated, and then a gap between the plug (121) and the third opening (113) is regulated, and further the flow of the third opening (113) is regulated.

8. The surge tank, as defined in claim 7,

the flow regulating component (12) further comprises a guide cylinder used for guiding the driving rod (122), the guide cylinder is vertically connected to the upper surface or the lower surface of the cover plate, and an internal thread in threaded connection with the driving rod (122) is arranged in the guide cylinder.

9. The surge tank, according to any of claims 1-8,

the volume tank body (11) is a high-temperature-resistant corrosion-resistant structure, and the flow regulating member (12) is a high-temperature-resistant corrosion-resistant member; or

The inner surface of the capacity tank body (11) is attached with a high-temperature-resistant corrosion-resistant layer, and the surface of the flow regulating component (12) is assisted with the high-temperature-resistant corrosion-resistant layer.

10. The surge tank of claim 9,

the first opening (111) and the second opening (112) are arranged oppositely, and the inflow cross-sectional area of the first opening (111) is larger than the outflow cross-sectional area of the second opening (112).

Technical Field

The invention relates to the field of alumina production and preparation systems, in particular to a buffer tank for switching and shunting in an industrial production process.

Background

As is well known, sodium aluminate solution has the characteristics of high temperature (130 ℃), strong alkali (280g/L), high solid content (150g/L), easy precipitation, high viscosity and the like. In the production process of alumina, sodium aluminate solution is conveyed through a pipeline, the existing sodium aluminate solution conveying pipeline has large inner diameter, large and unstable flow and easy eruption in the pipeline. High temperature, high pressure and extremely unstable flow solutions present significant challenges to continuous operation. For example, in the analysis of the components in sodium aluminate in the pipeline, as shown in fig. 1, the sampling scheme of the analyzer is to weld a sampling branch pipe on the main pipeline so that the sodium aluminate solution enters the analyzer, and a regulating valve is needed to control the flow entering the analyzer.

However, in the sodium aluminate communication pipeline, the phenomena of large pressure and unstable flow of the sodium aluminate solution flowing through the regulating valve still exist by the way of the regulating valve. Meanwhile, the valve body of the conventional common regulating valve has small structural clearance, so that the blockage and the blockage caused by the precipitation of the sodium aluminate solution are easy to occur, and further the pipeline is blocked and loses efficacy; the regulating valve is internally provided with parts such as a gasket, a sealing ring and the like which are easy to age and corrode, so that leakage is easy to cause; because the regulating valve is a closed part with an integral structure and has a complex internal structure, once the problems of blockage, leakage and the like occur, the regulating valve cannot be maintained independently, only the whole adopting device can be closed, and the regulating valve can be replaced integrally, so that the replacement cost is high, and the normal operation of the whole production line of the sodium aluminate solution is influenced; when the regulating valve is blocked, the internal connecting thread of the regulating valve cannot rotate due to blockage or corrosion, so that the pipeline connected with the regulating valve needs to be sawed off and a new joint needs to be welded when the regulating valve is replaced, the replacing operation is complex, and the engineering quantity is large.

In the production process of alumina, the transfer of the sodium aluminate solution directly affects the production efficiency, and the development of the transfer equipment which has strong adaptability to the sodium aluminate solution and reliable technology is very necessary. However, the existing regulating valve is easy to block and seize due to precipitation of sodium aluminate solution, is easy to leak, is complex to replace and operate, needs to saw off a pipeline connected with the regulating valve and weld a new joint, has large engineering quantity, and directly influences the production operation of alumina.

This also constitutes a need for further improvements in the design of the transition device to address the technical problems presented.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a buffer tank for an industrial production pipeline, so as to solve the problems that the existing common regulating valve is easy to block, block and leak, and is inconvenient to maintain so as to influence the real-time detection of an analytical instrument; and the technical problems that the flow is unstable and the solid particles easily cause the blockage of the inner pipeline of the analysis instrument.

The technical scheme adopted by the invention is as follows:

a surge tank, comprising: the volume tank comprises a volume tank body, wherein a first opening, a second opening and a third opening are formed in the volume tank body, the first opening and the second opening are respectively formed in the peripheral side wall of the volume tank body, and the third opening is formed in the bottom of the volume tank body; the adjustable volume tank is characterized by further comprising an adjusting component which is arranged on the volume tank body and is adjustable with the flow of the internal channel of the third opening, one end of the adjusting component is movably fixed on the volume tank body, and the outer peripheral surface of the other end, which is arranged oppositely, is matched with the inner shape and size of the third opening.

Further, the first opening and the second opening are oppositely spaced about a plumb surface of the containment vessel body; or the first opening and the second opening are positioned on the same side wall surface of the volume tank body; or the first opening and the second opening are respectively arranged on two adjacent side wall surfaces of the capacity tank body.

Further, the first opening is a liquid inlet, the second opening is a liquid outlet, and the third opening is a liquid outlet; the flow area of the third opening is controlled through the adjusting component, so that the liquid level height of the solution in the volume tank body is adjusted, and the flow balance of the second opening is ensured; or the third opening is a liquid inlet, the first opening is a liquid outlet, and the second opening is a liquid outlet.

Furthermore, the upper opening end of the tank body of the capacity tank body is a fifth opening, and a cover plate for opening or closing the tank body is arranged at the fifth opening; the flow regulating component is connected to the cover plate, the bottom end of the flow regulating component is used for being inserted into or blocking the third opening to regulate the flow of the third opening, and the upper opening end of the tank body is also used as an access hole.

Furthermore, the bottom plate of the tank body is a conical plate; the third opening is located in the center of the tapered plate.

Furthermore, the fourth opening is located directly over the second opening and is communicated with the return pipe, and the fourth opening is used for supplying the solution to be analyzed in the tank body to flow back to the return pipe after overflowing outwards.

Furthermore, the flow regulating component comprises a plug which is inserted into or shelters from the third opening, the plug is connected with a driving rod which is used for driving the plug to move up and down, the upper end of the driving rod is in threaded connection with the upper cover, and the driving rod is rotated to drive the plug to move up and down so as to regulate the gap between the plug and the third opening and further regulate the flow of the third opening.

Furthermore, the flow regulating component also comprises a guide cylinder used for guiding the driving rod, the guide cylinder is vertically connected to the upper surface or the lower surface of the cover plate, and an internal thread in threaded connection with the driving rod is arranged in the guide cylinder.

Furthermore, the capacity tank body is a high-temperature-resistant corrosion-resistant structure, and the flow regulating member is a high-temperature-resistant corrosion-resistant member; or the inner surface of the capacity tank body is adhered with a high-temperature-resistant corrosion-resistant layer, and the surface of the flow regulating component is assisted with the high-temperature-resistant corrosion-resistant layer.

Furthermore, the first opening and the second opening are arranged oppositely, and the inflow cross-sectional area of the first opening is larger than the outflow cross-sectional area of the second opening.

The invention has the following beneficial effects:

in the buffer tank, the capacity tank body has the effects of containing and retaining the solution and regulating the flow of the sample flowing out of the second opening, so that the solution entering the buffer tank can be subjected to preliminary precipitation filtration, buffering and stable flow velocity, the content of solid particles in the solution entering an analytical instrument is further reduced, the risk of blockage of an internal pipeline of the analytical instrument is reduced, and meanwhile, the buffer effect on the solution ensures that the flow velocity of the solution entering the analytical instrument is stable and balanced, and the sampling analysis of the analytical instrument is facilitated; secondly, the buffer adjusting tank for industrial analysis and sampling has the characteristics of simple structure, convenience in maintenance, corrosion resistance, blockage prevention and the like.

In the existing industrial production process, the phenomena of unstable flow, easy leakage of solid particles and the like existing in a common regulating valve are adopted, the replacement operation is complicated, a pipeline connected with the common regulating valve needs to be sawed off and a new joint needs to be welded, the engineering quantity is large, and the production operation of the alumina is directly influenced; the design of big open-ended tip can realize maintaining the jar body, clearance educt, greatly reduced the risk of pipeline jam, reduce pipeline maintenance work, very big promotion the efficiency of maintaining, improved production efficiency.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a prior art sampling device;

fig. 2 is a schematic front view of a buffer tank according to a preferred embodiment of the present invention.

Description of the figures

11. A capacity tank body; 111. a first opening; 112. a second opening; 113. a third opening; 114. a fourth opening; 115. a tank body; 116. a cover plate; 12. a flow regulating member; 121. a plug; 122. a drive rod.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

Referring to fig. 2, a preferred embodiment of the present invention provides a surge tank for industrial production, including: the volume tank body 11 is provided with a first opening 111, a second opening 112 and a third opening 113, the first opening 111 and the second opening 112 are respectively arranged on the peripheral side wall of the volume tank body 11, and the third opening 113 is arranged at the bottom of the volume tank body 11 along the vertical direction of the volume tank body 11. The flow regulating device further comprises a flow regulating component 12 which is arranged on the capacity tank body 11 and is adjustable with the flow of the internal channel of the third opening 113, one end of the flow regulating component 12 is movably fixed on the capacity tank body 11, and the outer peripheral surface of the other end which is arranged oppositely is matched with the internal shape and size of the third opening 113.

According to the buffer tank for industrial production provided by the embodiment of the invention, through the end side face of the flow regulating member 12 matched with the internal shape and size of the third opening 113, when the flow regulating member 12 is driven to move relative to the capacity tank body 11, the control of the flow area of the third opening 113 is realized, so that the regulation of the internal capacity of the capacity tank body 11 is realized; because the solution is temporarily stored in the volume tank body 11 and then flows out through the third opening 113 and/or the second opening 112, the pressure carried by the solution before entering the volume tank body 11 is well relieved, the spray phenomenon caused by unstable flow is avoided, the solution with constant flow can be provided, and the continuous operation working condition is facilitated; because the solution is temporarily stored in the capacity tank body 11, solid particles contained in the solution automatically settle under the action of gravity in the temporary storage process, and the method is particularly suitable for high-solid solution (such as high-temperature, strong alkali and high-solid sodium aluminate solution); as the whole buffer tank does not need to adopt gaskets, sealing rings and other parts which are easy to age and corrode, the problems of leakage or blockage caused by corrosion and unsteady flow are well solved.

In some embodiments of the present invention, the first opening 111 and the second opening 112 are spaced along the plumb direction, so that a certain drop height is formed inside the volume tank body 11, and precise control of the flow rate is better achieved. Or the first opening 111 and the second opening 112 are located on the same side wall surface of the capacity can body 11. Alternatively, the first opening 111 and the second opening 112 are provided on two adjacent side wall surfaces of the capacity tank body 11.

In a preferred embodiment of the present invention, the first opening 111 is a liquid inlet, the second opening 112 is a liquid outlet, and the third opening 113 is a liquid outlet, so that after entering from the first opening 111, the solution with high temperature, high pressure and extremely unstable flow rate is temporarily stored in the volume tank body 11, and then flows out from the second opening 112, and the redundant solution is emptied through the third opening 113; the flow rate of the solution in the volume tank body 11 can be adjusted to be constant by controlling the flow area of the third port 113 by the flow rate adjusting member 12. Specifically, first opening 111 communicates with the main conveyer pipe of carrying the solution to be analyzed to supply the solution to be analyzed to get into capacity jar body 11, capacity jar body 11 is used for the solution to be analyzed who holds the entering so that the solution to be analyzed carries out the nature and subsides, and makes the solution to be analyzed who gets into reach steady flow rate after buffering, and second opening 112 links to each other with analytical instrument, so that the solution to be analyzed after preliminary filtration and the flow rate is steady gets into analytical instrument and analyzes. The bottom of the volume tank body 11 is provided with a third opening 113, the third opening 113 is communicated with a return pipe for recovering the solution to be analyzed, a flow regulating member 12 connected with the volume tank body 11 is arranged in the third opening 113, and the flow regulating member 12 is used for regulating the flow of the solution to be analyzed discharged from the third opening 113, so as to indirectly regulate the flow of the solution to be analyzed flowing out of the second opening 112.

In another preferred embodiment of the present invention, the third opening 113 is a liquid inlet, the first opening 111 is a liquid outlet, and the second opening 112 is a liquid outlet, so that after the solution with high temperature, high pressure and extremely unstable flow rate enters from the third opening 113, the flow rate entering the volume tank body 11 is controlled by adjusting the flow area between the flow rate adjusting member 12 and the third opening 113, thereby ensuring that the flow rate of the second opening 112 is constant. Specifically, the third opening 113 is communicated with a main delivery pipe for delivering a solution to be analyzed, so that the solution to be analyzed enters the capacity tank body 11, a flow regulating member 12 connected with the capacity tank body 11 is arranged in the third opening 113, the flow regulating member 12 is used for regulating the flow of the solution to be analyzed flowing into the third opening 113, so as to indirectly regulate the flow of the solution to be analyzed flowing out of the second opening 112, and the capacity tank body 11 is used for containing the entering solution to be analyzed, so that the solution to be analyzed is naturally settled, and the entering solution to be analyzed is buffered, and then a stable flow rate is achieved. The first opening 111 communicates with a return pipe for recovering the solution to be analyzed.

When the buffer tank works, a solution to be analyzed in the main conveying pipe, taking a sodium aluminate solution as an example, firstly enters the capacity tank body 11 from the first opening 111, and solid particles such as slag and educt in the solution settle downwards under the action of gravity in the flowing process of the solution in the capacity tank body 11 under the holding action of the capacity tank body 11 on the solution, so that the content of the solid particles entering the second opening 112 is reduced; meanwhile, the flow rate flowing out of the second opening 112 is made constant by the regulation of the flow area of the third opening 113 by the flow rate regulation member 12. After the solution is buffered, settled and stabilized, the solution flows out through the second opening 112 and then enters an analysis instrument for analysis and treatment. Or, taking the sodium aluminate solution as an example, the sodium aluminate solution in the main delivery pipe firstly enters the capacity tank body 11 from the third opening 113, and in the process that the solution flows in the capacity tank body 11 under the holding effect of the capacity tank body 11 on the solution, solid particles such as slag and precipitate in the solution are settled downwards under the action of gravity, so that the content of the solid particles entering the second opening 112 is reduced; meanwhile, the flow rate flowing out of the second opening 112 is made constant by the regulation of the flow area of the third opening 113 by the flow rate regulation member 12. After the solution is buffered, settled and stabilized, the solution flows out through the second opening 112 and then enters an analysis instrument for analysis and treatment.

In the buffer tank, the capacity tank body 11 has the function of containing the solution, so that the entering solution can be subjected to preliminary sedimentation filtration and flow rate buffering and stabilization, the content of solid particles in the solution entering an analysis instrument is further reduced, the risk of pipeline blockage inside the analysis instrument is reduced, and meanwhile, the buffer tank has a buffering function on the solution, so that the flow rate of the solution entering the analysis instrument is stable and balanced, and the sampling analysis of the analysis instrument is facilitated.

Alternatively, as shown in fig. 2, the capacity tank body 11 includes a hollow cylindrical tank body 115, an upper opening end of the tank body 115 is a fifth opening, and a cover plate 116 for opening or closing the tank body 115 is provided at the fifth opening. The flow rate adjusting member 12 is connected to the cover plate 116, and the bottom end of the flow rate adjusting member 12 is used for being inserted into the third opening 113 to adjust the flow rate of the third opening 113, and the upper opening end of the tank 115 is also used as a service hole. In the invention, because the volume tank body 11 comprises the tank body 115 and the cover plate 116 which are detachably designed, and the flow regulating member 12 is connected to the cover plate 116, and the lower end of the flow regulating member 12 is inserted into/shields the third opening 113, the cover plate 116 can be opened to clean solid particles attached to the inside of the tank body 115 or the flow regulating member 12, thereby greatly reducing the risk of pipeline blockage and simultaneously reducing the pipeline maintenance work; on the other hand, when the flow regulating member 12 is out of order, the volume tank body 11 is of a detachable structure, so that the flow regulating member 12 can be maintained independently without closing the whole pipeline or replacing the diversion transfer tank as a whole, the cost is reduced, and the working efficiency is not affected.

In some embodiments of the invention, as shown in FIG. 2, the floor of the tank 115 is a tapered plate; the third opening 113 is located in the center of the conical plate, so that the solution to be analyzed in the tank 115 can be conveniently discharged from the third opening 113, and the solid particles can be conveniently and smoothly discharged from the third opening 113, thereby reducing the retention of the solid particles between the plug 121 and the third opening 113. The lower end surface of the plug 121 is a conical surface matched with the conical plate, and the plug 121 and the third opening 113 are matched through a conical surface, so that the gap between the plug 121 and the third opening 113 can be conveniently adjusted, and the flow rate of the third opening 113 can be controlled. In the actual use process, the plug 121 does not need to completely block the third opening 113, and is in a normally open state, and only the flow rate of the third opening 113 needs to be ensured to be smaller than that of the first opening 111, so that the solution in the tank body 115 can flow out from the second opening 112, and therefore, the plug 121 and the third opening 113 cannot be blocked by solid particles in the solution to be analyzed due to small gaps.

In other embodiments of the present invention, not shown in the drawings, the bottom plate of the tank 115 is a plane, the second opening 112 is located in the middle of the bottom plate, a drain pipe for discharging the solution to be analyzed is connected to the second opening 112, a water inlet end of the drain pipe is a tapered conical pipe, and the bottom plate of the tank 115 is a plane, so as to facilitate precipitation and deposition of solid particles in the solution to be analyzed, further reduce the content of the solid particles in the pipeline, reduce the risk of pipeline blockage, and facilitate the solid particles to be cleaned out of the tank 115. The lower end surface of the plug 121 is a conical surface matched with the inner conical surface of the conical tube. The plug 121 and the drain pipe of the third opening 113 are matched through a conical surface, so that the gap between the plug 121 and the water inlet end of the drain pipe can be conveniently adjusted, and the flow of the third opening 113 can be controlled. In the actual use process, the plug 121 does not need to completely block the third opening 113, and is in a normally open state, and only the flow rate of the third opening 113 needs to be ensured to be smaller than that of the first opening 111, so that the solution in the tank body 115 can flow out from the second opening 112, and therefore, the plug 121 and the third opening 113 cannot be blocked by solid particles in the solution to be analyzed due to small gaps.

In some embodiments of the present invention, a fourth opening 114 is further disposed on a side wall of the tank 115, the fourth opening 114 is located above the second opening 112 and is communicated with the return pipe, and the fourth opening 114 is used for allowing the solution to be analyzed in the tank 115 to overflow outwards and then return to the return pipe. In actual use, when the flow rate of the second opening 112 reaches the upper limit, the excess solution flows into the return pipe through the fourth opening 114 above the second opening 112, and the flow rate of the sampling opening is constant.

Alternatively, as shown in fig. 2, the flow rate adjusting member 12 includes a plug 121 for being inserted into/blocking the third opening 113, the plug 121 is connected with a driving rod 122 for driving the plug 121 to move up and down, and an upper end of the driving rod 122 is in threaded connection with the cover plate 116, so that when the driving rod 122 is rotated, the plug 121 is driven to move up and down to adjust a gap between the plug 121 and the third opening 113, thereby adjusting the flow rate of the third opening 113. When the flow regulating member 12 of the present invention is used to regulate the flow of the second opening 112, only the driving rod 122 needs to be rotated to make the driving rod 122 drive the plug 121 to move up and down, so as to regulate the gap between the plug 121 and the third opening 113 to regulate the flow of the third opening 113, thereby achieving the purpose of indirectly regulating the flow of the second opening 112, and the flow regulating member 12 has a simple structure, is simple to regulate and operate, is easy to implement, and because the regulating screw thread is located on the cover plate 116, it does not contact with the solution in the tank body 115, thereby completely avoiding the regulating screw thread from being corroded or jammed by solid particles, and meanwhile, when the flow regulating member 12 is maintained or replaced, there is no need to saw off the pipeline connected with the capacity tank body 11.

Alternatively, as shown in fig. 2, the flow rate adjustment member 12 further includes a guide cylinder for guiding the driving rod 122, the guide cylinder is vertically connected to the upper surface or the lower surface of the cover plate 116, and an internal thread is provided in the guide cylinder to be threadedly connected with the driving rod 122.

Alternatively, the capacity tank body 11 is a high-temperature-resistant corrosion-resistant structure, and the flow rate regulation member 12 is a high-temperature-resistant corrosion-resistant member; or the inner surface of the capacity tank body 11 is adhered with a high-temperature-resistant corrosion-resistant layer, and the surface of the flow regulating component 12 is assisted with the high-temperature-resistant corrosion-resistant layer. Specifically, the capacity tank body 11 and the flow regulating member 12 are both made of stainless steel materials, the stainless steel can resist the high temperature and the corrosivity of the solution to be analyzed, and the buffer tank does not contain rubber and other parts which are easy to corrode and age, so that the problem of leakage or blockage caused by corrosion is solved.

Preferably, the first opening 111 and the second opening 112 are disposed opposite to each other, so as to reduce influence of the first opening 111 on the solution flowing out of the second opening 112 as much as possible, so that the flow rate of the solution flowing out of the second opening 112 is stable and balanced, and the inflow cross-sectional area of the first opening 111 is larger than the outflow cross-sectional area of the second opening 112, so that the second opening 112 is filled with the solution to be analyzed in the whole working process, so as to further stabilize and balance the flow rate of the solution to be analyzed.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.