Metering device

Abstract

The utility model provides a metering device which comprises a first tank body, a second tank body and a third tank body, the first tank body is provided with a first opening, a liquid outlet is formed in the bottom of the first tank body, and the first tank body is used for containing liquid; the adjusting part is located above the opening of the first tank body, and at least part of the adjusting part can move to the interior of the first tank body from the opening; when at least part of the adjusting part is located in the first tank body, first gaps exist between the adjusting part and the inner circumferential wall of the first tank body and between the adjusting part and the first opening. According to the utility model, the technical problem of large metering operation difficulty of toxic and harmful liquid in the prior art can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of measurement, and in particular relates to a measurement device. Background Art

[0002] Liquid dosing metering method is a method of accurately measuring and controlling the amount of liquid added, which is suitable for liquid addition in various industrial processing and production processes. Among them, the most common liquid dosing metering methods include weighing metering and flow metering.

[0003] The weighing method places the liquid feeding container on the scale and accurately measures the weight of the liquid to determine the feeding amount. This method is suitable for liquids of various viscosities and densities, and is particularly suitable for production processes that require precise feeding amounts.

[0004] The flow metering method determines the amount of material added by measuring the flow rate of the liquid through the pipeline. Commonly used flow meters include instantaneous flow meters, cumulative flow meters and control valves. This method is suitable for production processes that require rapid and continuous addition of materials, such as chemical and pharmaceutical industries.

[0005] Regardless of the metering method used, the accuracy and stability of the amount of liquid added must be guaranteed during the liquid addition process to ensure product quality and the efficiency of industrial production. Some existing small amounts of toxic and harmful liquids need to be measured during use. If weighing is used, manual pouring is required, and the amount used each time cannot be well controlled. There may be too much or too little pouring, and it is toxic and harmful, which is not conducive to the health and safety of operators. The accuracy of flow metering is too low for weighing small amounts of liquids and cannot meet production requirements.

[0006] Since the toxic and harmful liquids in the prior art have technical problems such as difficult metering operation and low metering accuracy, the utility model studies and designs a metering device. Utility Model Content

[0007] Therefore, the utility model provides a metering device, which can solve the technical problem of difficult metering operation of toxic and harmful liquids in the prior art.

[0008] In order to solve the above problems, the utility model provides a metering device, comprising: a first tank body, the first tank body having a first opening, a liquid outlet being arranged at the bottom of the first tank body, and the first tank body being used for containing liquid;

[0009] An adjusting member, wherein the adjusting member is located above the opening of the first tank body, and the adjusting member is at least partially movable from the opening to the inside of the first tank body; when the adjusting member is at least partially located inside the first tank body, a first gap exists between the adjusting member and the inner circumferential wall of the first tank body and the first opening, and liquid can flow into the first gap through the opening.

[0010] In some embodiments, the metering device also includes a second tank body, which is arranged on the first tank body, and the second tank body has a second opening, which is connected to the first opening, the adjusting member is located inside the second tank body, and there is a second gap between the adjusting member and the second opening and the inner wall of the second tank body, and the second tank body is provided with a liquid inlet and an overflow port.

[0011] In some embodiments, the metering device further includes a liquid storage tank, and the liquid inlet and the overflow port are both connected to the liquid storage tank.

[0012] In some embodiments, a connecting port is provided on the second tank body, with the direction perpendicular to the ground as the vertical direction. Along the vertical direction, the connecting port is located above the liquid inlet, the connecting port is connected to the liquid storage tank, and the connecting port is connected to the top of the liquid storage tank.

[0013] In some embodiments, with the direction perpendicular to the ground as the vertical direction, along the vertical direction, the liquid inlet is located above the overflow port, the overflow port is located at the connection between the second tank body and the first tank body, the overflow port is connected to the top of the liquid storage tank, and the liquid inlet is connected to the bottom of the liquid storage tank.

[0014] In some embodiments, an air inlet is provided on the second tank body, with a direction perpendicular to the ground as a vertical direction, and along the vertical direction, a height of the air inlet is not less than a height of the liquid inlet.

[0015] In some embodiments, a baffle is disposed at one end of the second tank body facing away from the first tank body, a connecting rod is disposed on the baffle, and the connecting rod passes through the baffle and is connected to the adjusting member.

[0016] In some embodiments, a connecting plate is provided on the connecting rod, with the direction perpendicular to the ground as the vertical direction. A scale is provided on the baffle along the vertical direction, with the ground as the projection plane. Within the projection plane, there is a gap between the baffle and the connecting plate, or the baffle is connected to the connecting plate.

[0017] In some embodiments, a rotating wheel is provided at one end of the connecting rod facing away from the adjusting member, and a handle is provided on the rotating wheel.

[0018] In some embodiments, the liquid outlet is connected to a reactor, and the reactor is located below the first tank.

[0019] The metering device provided by the utility model has the following beneficial effects:

[0020] The volume of the first tank body is adjusted by the adjusting member. When measuring, the volume of the liquid to be measured is first determined, and the volume of the liquid to be measured is subtracted from the volume of the liquid to be measured from the first tank body to obtain the volume of the adjusting member that needs to be inserted into the first tank body, and the length of the adjusting member that needs to be inserted into the first tank body is calculated, and the part of the adjusting member that needs to be inserted into the first tank body is inserted into the first tank body through the first opening. The liquid flows into the first tank body from the first opening, and a first gap exists between the adjusting member and the inner circumferential wall of the first tank body and the first opening, and is stored in the first tank body. When the liquid level in the first tank body is in the same plane as the opening and the liquid in the first tank body is full, it means that the liquid measurement is completed, thereby accurately measuring the volume of the liquid, ensuring the accuracy of the experimental results, the stability of the production process and the correct preparation of the raw materials, improving the production efficiency and process accuracy, and being simple to operate without manual pouring. After the measurement is completed, the liquid outlet is opened and the liquid is discharged through the liquid outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0022] Figure 1 It is a structural diagram of a metering device of the utility model;

[0023] Figure 2 This is a schematic diagram of the working state of a metering device of the utility model;

[0024] Figure 3 The utility model discloses a liquid flow diagram of a metering device.

[0025] The accompanying drawings are marked as follows:

[0026] 1. First tank body; 2. Liquid outlet; 3. Adjustment member; 4. Connecting rod; 5. Second tank body; 6. Scale; 7. Overflow port; 8. Liquid inlet; 9. Connecting port; 10. Baffle; 11. Rotating wheel; 12. Handle; 13. Connecting plate; 14. Liquid storage tank; 15. Air inlet; 16. First part; 17. Second part; 18. Third part; 19. Reactor. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0029] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0030] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0031] See also Figure 1-3As shown, according to an embodiment of the utility model, a metering device is provided, which includes: a first tank body 1, the first tank body 1 has a first opening, and a liquid outlet 2 is arranged at the bottom of the first tank body 1, and the first tank body 1 is used to contain liquid; an adjusting member 3, the adjusting member 3 is located above the opening of the first tank body 1, and the adjusting member 3 can at least partially move from the opening to the inside of the first tank body 1; when the adjusting member 3 is at least partially located inside the first tank body 1, a first gap exists between the adjusting member 3 and the inner peripheral wall of the first tank body 1 and the first opening. In this technical solution, the volume of the first tank body 1 is adjusted by the adjusting member 3. When measuring, the volume of the liquid to be measured is first determined, and the volume of the liquid to be measured is subtracted from the first tank body 1 to obtain the volume of the adjusting member 3 that needs to be inserted into the first tank body 1, and the length of the adjusting member 3 that needs to be inserted into the first tank body 1 is calculated, and the part of the adjusting member 3 that needs to be inserted into the first tank body 1 is inserted into the first tank body 1 through the first opening. The liquid flows into the first tank body 1 from the first opening, and a first gap exists between the adjusting member 3 and the inner circumferential wall of the first tank body 1 and the first opening, and is stored in the first tank body 1. When the liquid level in the first tank body 1 is in the same plane as the opening, the liquid in the first tank body 1 is full, which means that the liquid measurement is completed, thereby accurately measuring the volume of the liquid, ensuring the accuracy of the experimental results, the stability of the production process and the correct preparation of the raw materials, improving the production efficiency and process accuracy, and being simple to operate without manual pouring. After the measurement is completed, the liquid outlet 2 is opened and the liquid is discharged through the liquid outlet 2.

[0032] In the metering device of the present invention, the ground is taken as the horizontal plane, the direction perpendicular to the ground is the vertical direction, and the directions such as "above", "below", "top" and "bottom" recorded in the text are all directions in the vertical direction. The adjusting member 3 can be fixed by a hanging rope, a cylinder or the like, so as to fix the adjusting member 3 and drive the adjusting member 3 to move. Furthermore, the driving device is located above the first tank body 1. Preferably, the adjusting member 3 adopts a cylindrical structure.

[0033] In the prior art, the volumetric measurement method determines the amount of liquid added by measuring the volume inside the liquid feeding container. Commonly used measuring tools include measuring cups, measuring tubes, etc. This method is suitable for production processes with low liquid viscosity, regular feeding containers, and simple internal geometric structures. In addition, when performing repeated experiments, the volume of the liquid to be measured remains unchanged. In the prior art, manual observation of the scale on the metering device is required. When measuring multiple times without interruption, manual observation will produce errors, resulting in low measurement accuracy and affecting the accuracy of the experiment.

[0034] In the prior art, the volumetric measurement method determines the amount of liquid added by measuring the volume inside the liquid feeding container. Commonly used measuring tools include measuring cups, measuring tubes, etc. This method is suitable for production processes with low liquid viscosity, regular feeding containers, and simple internal geometric structures. In addition, when repeated experiments are performed, the volume of the liquid to be measured remains unchanged. In the prior art, manual observation of the scale on the metering device is required. When measuring toxic and harmful liquids continuously and multiple times, manual observation will produce errors, and manual contact with toxic and harmful liquids is required multiple times, resulting in low measurement accuracy and affecting the accuracy of the experiment.

[0035] Toxic and harmful liquids weigh several tons after being transported. These liquids are placed in a large tank, but only a small amount of liquid is needed for each experiment. The measuring cups or measuring tubes in the prior art need to be manually taken from the large tank many times. If a pump plus a liquid level sensor is used, this is difficult to control. After the valve is closed, the residual liquid in the tube will flow into the metering piece, so there will be deviations. The metering device of the utility model only requires manual contact with the toxic and harmful liquid once, and the overflowing liquid will return to the large tank. Basically, it only needs to be contacted with the toxic and harmful liquid once a year to meet dozens of experiments until the liquid in the entire tank is used up.

[0036] In some embodiments, the metering device also includes a second tank body 5, which is arranged on the first tank body 1, and the second tank body 5 has a second opening, which is connected to the first opening, and the adjusting member 3 is located inside the second tank body 5, and when the adjusting member 3 is at least partially located inside the second tank body 5, there is a second gap between the adjusting member 3 and the inner wall of the second tank body 5 and the second opening. Specifically, there is a gap between the adjusting member 3 and the inner wall of the second tank body 5, and with the bottom surface as the projection surface, the area of ​​the second opening is larger than the area of ​​the adjusting member 3, the adjusting member 3 is located in the second opening, and there is a second gap between the adjusting member 3 and the second opening, and the second tank body 5 is provided with a liquid inlet 8 and an overflow port 7. In this technical solution, the overflow port 7 is located at the connection between the first tank body 1 and the second tank body 5, through the liquid inlet 8, the liquid inlet 8 is used to allow liquid to flow into the second tank body 5, after the liquid enters the second tank body 5, it passes through the second gap and the first gap in sequence, and then flows into the first tank body 1, completing the filling of the first tank body 1, when the liquid level in the first tank body 1 is in the same plane as the first opening, the excess liquid will flow out from the overflow port 7, at this time, close the liquid inlet 8, when the overflow port 7 no longer flows out of the liquid, it indicates that the liquid metering is completed, further, the overflow port 7 is located at the connection between the second tank body 5 and the first tank body 1, the pipeline connected to the overflow port 7 can adopt a transparent pipeline, or the second tank body 5 adopts a transparent material, so as to observe the overflow of the overflow port 7, thereby controlling the opening or closing of the liquid inlet 8.

[0037] In the metering device of the present invention, preferably, the first tank body 1 is a straight tubular structure, that is, a cylindrical tubular structure, the adjusting member 3 adopts a cylindrical structure, the adjusting member 3 is located in the first tank body 1, the adjusting member 3 coincides with the central axis of the first tank body 1, and the second opening is the same size as the first opening.

[0038] In some embodiments, the metering device further includes a liquid storage tank 14, with the direction perpendicular to the ground as the vertical direction. Along the vertical direction, the height of the liquid storage tank 14 is not greater than the height of the first tank body 1, and the liquid inlet 8 and the overflow port 7 are both connected to the liquid storage tank 14. In this technical solution, the liquid storage tank 14 is used to provide liquid in the first tank body 1, and the liquid inlet 8 and the overflow port 7 are both connected to the liquid storage tank 14, so that the recycling of the liquid after overflow is realized to avoid waste of resources. The height of the liquid storage tank 14 is not greater than the height of the first tank body 1, so that after the overflow liquid flows out from the overflow port, it flows into the liquid storage tank 14 under the action of the height difference, which is convenient for collecting the overflow liquid.

[0039] In some embodiments, the second tank body 5 is provided with a connecting port 9, the connecting port 9 is located above the liquid inlet 8, the connecting port 9 is connected to the liquid storage tank 14, and the connecting port 9 is connected to the top of the liquid storage tank 14. In this technical solution, when the liquid inlet 8 transports liquid from the liquid storage tank 14 to the first tank body 1 through the connecting port 9, the pressure in the liquid storage tank 14 and the first tank body 1 will change, a negative pressure will be formed in the liquid storage tank 14, and a positive pressure will be formed in the first tank body 1. The liquid storage tank 14 is connected to the first tank body 1 through the connecting port 9, so that the pressures in the liquid storage tank 14 and the first tank body 1 are balanced with each other, ensuring the stability of liquid transportation.

[0040] In some embodiments, the direction perpendicular to the ground is taken as the vertical direction, and along the vertical direction, the liquid inlet 8 is located above the overflow port 7, the overflow port 7 is located at the connection between the second tank body 5 and the first tank body 1, the overflow port 7 is connected to the top of the liquid storage tank 14, and the liquid inlet 8 is connected to the bottom of the liquid storage tank 14. In this technical solution, the liquid inlet 8 is located above the overflow port 7, which ensures the overflow effect of the overflow port 7, the overflow port 7 is located at the connection between the second tank body 5 and the first tank body 1, the overflow port 7 is connected to the top of the liquid storage tank 14, and the liquid inlet 8 is connected to the bottom of the liquid storage tank 14, so that the recycling of the liquid after overflow is realized to avoid waste of resources, and the height of the liquid storage tank 14 is not greater than the height of the first tank body 1, so that after the overflowed liquid flows out from the overflow port, it flows into the liquid storage tank 14 under the action of the height difference, which is convenient for collecting the overflowed liquid.

[0041] In the metering device of the present invention, preferably, the liquid storage tank 14 is cylindrical, and the liquid storage tank 14 has a cover plate, which can be opened, and liquid can be input into the liquid storage tank 14 after the cover plate is opened. Furthermore, the overflow port 7 and the connecting port of the liquid storage tank 14 are arranged on the cover plate. A pump body is arranged on the connecting pipe between the liquid inlet 8 and the bottom of the liquid storage tank 14, and the liquid in the liquid storage tank 14 is transported from the liquid inlet 8 to the first tank body 1 through the pump body.

[0042] In some embodiments, the second tank body 5 is provided with an air inlet 15, with the direction perpendicular to the ground being the vertical direction, and along the vertical direction, the height of the air inlet 15 is not less than the height of the liquid inlet 8. In this technical solution, the air inlet 15 is used to transport gas into the second tank body 5 and the first tank body 1. Preferably, the gas can be nitrogen or other gases with the same function, and the nitrogen is blown into the second tank body 5 through the air inlet 15, so that the liquid remaining on the inner wall of the second tank body 5, the first tank body 1 and each pipeline is purged to the reactor, ensuring the correct preparation of the raw materials and the accuracy of the process.

[0043] In some embodiments, a baffle 10 is provided at one end of the second tank body 5 facing away from the first tank body 1, and a connecting rod 4 is provided on the baffle 10, and the connecting rod 4 is connected to the adjusting member 3 after passing through the baffle 10. In this technical solution, a baffle 10 is provided at one end of the second tank body 5 facing away from the first tank body 1, and the connecting rod 4 is connected to the adjusting member 3 after passing through the baffle 10, and the baffle 10 and the connecting rod 4 are used to fix and drive the displacement of the adjusting member 3. Preferably, the baffle 10 can close the end of the second tank body 5 facing away from the first tank body 1, so that a cavity structure is formed in the second tank body 5 and the first tank body 1.

[0044] In some embodiments, a connecting plate 13 is provided on the connecting rod 4, and a direction perpendicular to the ground is taken as a vertical direction. Along the vertical direction, a scale 6 is provided on the baffle 10, and the ground is taken as a projection plane. In the projection plane, there is a gap between the baffle 10 and the connecting plate 13, or the baffle 10 is connected to the connecting plate 13. In this technical solution, the length of the adjusting member 3 extending into the first tank body 1 can be accurately controlled by the scale 6 and the connecting plate 13. The adjusting member 3 has a first position. When the adjusting member 3 is in the first position, the bottom surface of the adjusting member 3 and the first opening are in the same horizontal plane. At this time, the value on the scale 6 corresponding to the connecting plate 13 is zero. When the adjusting member 3 moves toward the inside of the first tank body 1, the value gradually increases, thereby confirming the length of the adjusting member 3 extending into the first tank body 1 and calculating the volume of the part of the adjusting member 3 extending into the first tank body 1.

[0045] In some embodiments, a rotating wheel 11 is disposed at one end of the connecting rod facing away from the adjusting member 3 , and a handle 12 is disposed on the rotating wheel.

[0046] In the metering device of the present invention, preferably, the connecting rod 4 is a screw rod, and the connecting rod 4 is threadedly connected to the baffle 10, and the connecting rod 4 is rotated to move the adjusting member 3 upward or downward. The connecting rod 4 is rotated through the rotating wheel 11 and the handle 12, thereby driving the adjusting member 3 to move upward or downward.

[0047] See also Figure 2 As shown, the first tank body 1 can be divided into a first part 16, a second part 17 and a third part 18, the first part 16, the second part 17 and the third part 18 are connected in sequence, the first opening is located at one end of the first part 16 facing away from the second part 17, the first part 16 is truncated cone-shaped, and the area of ​​the end of the first part 16 facing away from the second part 17 is smaller than the area of ​​the other end, the second part 17 is cylindrical, the third part 18 is conical, and the end of the third part 18 facing the second part 17 is circular, the liquid outlet 2 is arranged at one end of the third part 18 facing away from the second part 17, and further, the first tank body 1 can also be set as a whole to be cylindrical or other shapes.

[0048] The volumes of the first part 16, the second part 17 and the third part 18 are v1, v2 and v3 respectively. When the scale set on the outside of the screw shows zero, the adjusting member 3 adopts a cylindrical structure, and the effective volume in the first tank body 1 is v1+v2+v3. When the scale set on the outside of the connecting rod 4 shows h, the effective volume in the first tank body 1 is v1+v2+v3-πr. 2 h.

[0049] Assuming that the volume of toxic and harmful liquid to be added during the production process is v, according to the formula v1+v2+v3-πr 2 h=v, calculate the position h of the scale meter outside the screw rod, rotate the rotating wheel 11, adjust the height of the connecting rod 4 connected to the adjusting member 3, and make the position h of the scale meter outside the connecting rod 4.

[0050] Other single storage tanks are toxic and hazardous liquid storage tanks, which are used to store toxic and hazardous liquids. One addition can be used for rapid weighing of 20-50 batches of metering tanks.

[0051] Open the delivery pump body and the regulating valve of the liquid inlet 8 to control the flow of the toxic and harmful liquid into the first tank body 1. The toxic and harmful liquid enters the cavity of the first tank body 1 through the liquid inlet 8. When the liquid in the first tank body 1 is full, the excess toxic and harmful liquid flows back to the liquid storage tank 14 through the overflow port 7. A sight glass is set on the pipeline near the overflow port 7. If liquid flows out, it proves that the liquid in the first tank body 1 is full.

[0052] The delivery pump body and the regulating valve of the liquid inlet 8 are closed. During the whole operation process, the connecting port 9 is opened and connected with the liquid storage tank 14.

[0053] After confirmation, open the liquid outlet 2, and release the measured toxic and harmful liquid into the reactor 19 through the liquid outlet 2. When no liquid flows into the reactor 19 through the sight glass, open the nitrogen valve of the metering tank, and purge the metering tank and the pipeline from the metering tank to the reactor 19 to ensure the correct preparation of the raw materials and the accuracy of the process.

[0054] The measuring device of the utility model can weigh a small amount of toxic and harmful liquid within the range of: v1+v2+v3-πr 2 Between h and v1+v2+v3, the specific dimensions of the metering cavity and functional cavity of the metering tank need to be reasonably designed according to the process requirements. The larger the length of the cylinder and the smaller the radius, the higher the accuracy of the measured volume of toxic and harmful liquids.

[0055] In some embodiments, the liquid outlet 2 is connected to a reactor 19, and the reactor 19 is located below the first tank body 1. Preferably, the reactor 19 is located below the first tank body 1 along a direction perpendicular to the ground, that is, the reactor 19 is located directly below the first tank body 1. In this technical solution, the reactor 19 is located below the first tank body 1 along the vertical direction, so that the liquid in the first tank body 1 flows into the reactor 19 under the action of gravity, thereby completing the addition of liquid. When working, the liquid inlet 8 is opened to transport the liquid in the first tank body 1. When the overflow port 7 begins to overflow, the liquid inlet 8 is closed. When the overflow port 7 stops overflowing, the liquid outlet 2 is opened to discharge the liquid in the first tank body 1. When the liquid outlet 2 no longer flows out of the liquid, the air inlet 15 is opened to blow nitrogen into the second tank body 5 through the air inlet 15, thereby completing the purge of the first tank body 1, the second tank body 5 and the inside of each pipeline. After a period of time, specifically, it can last for 10S, the liquid outlet 2 is closed, and at this time, the metering output of one liquid is completed. When multiple reactions are carried out in the reactor 19, and the required liquid volume remains unchanged, the position of the adjusting member 3 is kept unchanged, and the above operation can be repeated.

[0056] In the metering device of the present invention, the pipeline on the liquid outlet 2 can be made of transparent material to facilitate observation of the real-time status of the liquid outlet 2. A valve is provided on the liquid outlet 2, and the liquid delivery in the phase reactor 19 can be controlled by opening or closing the valve.

[0057] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0058] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the utility model should be included in the protection scope of the utility model. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the utility model, and these improvements and variations should also be regarded as the protection scope of the utility model.

Claims

1. A metering device, characterized in that: include: A first tank body (1), the first tank body (1) having a first opening, a liquid outlet (2) being arranged at the bottom of the first tank body (1), and the first tank body (1) being used for containing liquid; An adjusting member (3), the adjusting member (3) being located above the opening of the first tank body (1), and the adjusting member (3) being at least partially movable from the opening to the interior of the first tank body (1); when the adjusting member (3) is at least partially located inside the first tank body (1), a first gap exists between the adjusting member (3) and the inner peripheral wall of the first tank body (1) and the first opening, and liquid can flow into the first gap through the opening.

2. The metering device according to claim 1, characterized in that: The metering device further comprises a second tank body (5), the second tank body (5) being arranged on the first tank body (1), the second tank body (5) having a second opening, the second opening being communicated with the first opening, the adjusting member (3) being located inside the second tank body (5), and a second gap being present between the adjusting member (3) and the second opening and the inner wall of the second tank body (5), and the second tank body (5) being provided with a liquid inlet (8) and an overflow port (7).

3. The metering device according to claim 2, characterized in that: The metering device further comprises a liquid storage tank (14), and the liquid inlet (8) and the overflow port (7) are both connected to the liquid storage tank (14).

4. The metering device according to claim 3, characterized in that: The second tank body (5) is provided with a communication port (9), the communication port (9) is located above the liquid inlet (8), the communication port (9) is connected to the liquid storage tank (14), and the communication port (9) is connected to the top of the liquid storage tank (14).

5. The metering device according to claim 3, characterized in that: In the vertical direction, the liquid inlet (8) is located above the overflow port (7), the overflow port (7) is located at the connection between the second tank body (5) and the first tank body (1), the overflow port (7) is connected to the top of the liquid storage tank (14), and the liquid inlet (8) is connected to the bottom of the liquid storage tank (14).

6. The metering device according to claim 2, characterized in that: The second tank body (5) is provided with an air inlet (15), with the direction perpendicular to the ground being the vertical direction. Along the vertical direction, the height of the air inlet (15) is not less than the height of the liquid inlet (8).

7. The metering device according to claim 2, characterized in that: A baffle (10) is provided at one end of the second tank body (5) facing away from the first tank body (1), and a connecting rod (4) is provided on the baffle plate (10). The connecting rod (4) passes through the baffle plate (10) and is connected to the adjusting member (3).

8. The metering device according to claim 7, characterized in that: A connecting plate (13) is provided on the connecting rod (4), and a direction perpendicular to the ground is taken as a vertical direction. A scale (6) is provided on the baffle plate (10) along the vertical direction, and the ground is taken as a projection surface. Within the projection surface, there is a gap between the baffle plate (10) and the connecting plate (13), or the baffle plate (10) and the connecting plate (13) are connected.

9. The metering device according to claim 7, characterized in that: A rotating wheel (11) is arranged at one end of the connecting rod facing away from the adjusting member (3), and a handle (12) is arranged on the rotating wheel.

10. The metering device according to claim 1, characterized in that: The liquid outlet (2) is connected to a reaction kettle (19), and the reaction kettle (19) is located below the first tank body (1).

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