Evaporation suppression structure for balance weighing

Abstract

The utility model discloses an evaporation suppression structure for balance weighing, which relates to the technical field of liquid flow metering and comprises an evaporation suppression shell, a water containing tank is arranged in the evaporation suppression shell, and a temperature and humidity sensor is mounted on the evaporation suppression shell and used for detecting the temperature and the humidity of the internal space of the evaporation suppression shell. The evaporation suppression shell is provided with a heat exchanger connecting port used for being connected with a heat exchanger so that the temperature in the evaporation suppression shell can be regulated and controlled through the heat exchanger. According to the evaporation suppression structure for weighing of the balance, the evaporation suppression effect of the measured liquid can be improved, the uncertainty caused by evaporation of the measured liquid is reduced, and the reliability of a measurement result is improved.

Description

Technical Field

[0001] This utility model relates to the field of liquid flow metering technology, and in particular to an evaporation suppression structure for balance weighing. Background Technology

[0002] When measuring the flow rate of a small liquid using the dynamic mass method, a beaker is placed on the balance pan, and the liquid to be measured is injected into the beaker through a syringe. The mass of the injected liquid is then measured by the balance. However, during the measurement process, evaporation of the liquid in the beaker is inevitable. This evaporation introduces significant uncertainty into the measurement results, leading to low reliability.

[0003] The existing method involves placing a beaker in a water tank within a confined, semi-enclosed space. The liquid in the water tank evaporates naturally, causing the air inside the semi-enclosed space to approach saturation. This effectively reduces the uncertainty introduced by the evaporation of the liquid in the beaker during testing. However, this method has limitations because the evaporation rate is limited and cannot be manually controlled. It is usually difficult to achieve a saturated vapor state inside the structure, thus limiting the suppression of evaporation of the liquid in the beaker. While effective for flow rate measurements at the milliliter / minute level, the improvement is limited for measurements at the micro-nanoliter / minute level.

[0004] In view of this, we propose an evaporation suppression structure for balance weighing to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide an evaporation suppression structure for balance weighing, so as to solve the problems existing in the prior art, improve the evaporation suppression effect of the measured liquid, reduce the uncertainty introduced by the evaporation of the measured liquid, and improve the reliability of the measurement results.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides an evaporation suppression structure for balance weighing, including an evaporation suppression shell, a water tank inside the evaporation suppression shell, a temperature and humidity sensor installed on the evaporation suppression shell for detecting the temperature and humidity inside the evaporation suppression shell, and a heat exchanger connection port on the evaporation suppression shell for connecting a heat exchanger to regulate the temperature inside the evaporation suppression shell through the heat exchanger.

[0008] In one embodiment, the evaporation suppression housing includes a lower housing and an upper housing connected to the upper end of the lower housing, and the bottom of the upper housing is provided with a through hole communicating with the interior of the lower housing.

[0009] In one embodiment, the water tank is disposed within the upper housing surrounding the through hole.

[0010] In one embodiment, the top of the upper housing is provided with a first through hole for the injection tube to pass through.

[0011] In one embodiment, the heat exchanger connection port is located on the side wall of the upper housing.

[0012] In one embodiment, the upper housing has an inlet and outlet on its side wall, through which liquid can be injected into the water tank, and the height of the inlet and outlet is lower than the height of the inner sidewall of the water tank.

[0013] In one embodiment, the lower housing is provided with a temperature and humidity sensor interface, and the temperature and humidity sensor is installed in the temperature and humidity sensor interface.

[0014] In one embodiment, the upper end of the lower housing is provided with an annular insertion groove, and the lower end of the upper housing is provided with an annular insertion block that is inserted into the annular insertion groove.

[0015] In one embodiment, the bottom of the lower housing is provided with a second through hole for the support rod of the balance tray to pass through.

[0016] In one embodiment, a water receiving tank is provided at the bottom of the lower housing for collecting liquid overflowing from the beaker.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] This invention provides an evaporation suppression structure for balance weighing. A temperature and humidity sensor monitors the temperature and humidity values ​​within the evaporation suppression shell, and a heat exchanger controls and adjusts the temperature inside the shell, thereby changing the internal humidity. This precisely controls the evaporation rate of the liquid in the water tank, overcoming the uncontrollable drawbacks of natural evaporation. The evaporation suppression shell is always kept in a saturated vapor state, thus improving the evaporation suppression effect of the measured liquid, reducing the uncertainty introduced by the evaporation of the measured liquid, and increasing the reliability of the measurement results. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the evaporation suppression structure for balance weighing in an embodiment of this utility model.

[0021] In the diagram: 1-Evaporation suppression shell, 101-Lower shell, 102-Upper shell, 2-Water tank, 3-Heat exchanger connection port, 4-Through hole, 5-First through hole, 6-Inlet / outlet, 7-Inner side guard, 8-Beaker, 9-Temperature and humidity sensor interface, 10-Annular insertion slot, 11-Annular insertion block, 12-Balance tray, 13-Support rod, 14-Second through hole, 15-Water tank, 16-Injection tube. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The purpose of this invention is to provide an evaporation suppression structure for balance weighing, in order to solve the problems existing in the prior art, improve the evaporation suppression effect of the measured liquid, reduce the uncertainty introduced by the evaporation of the measured liquid, and improve the reliability of the measurement results.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1 As shown, this embodiment provides an evaporation suppression structure for balance weighing, including an evaporation suppression shell 1, a water tank 2 inside the evaporation suppression shell 1, a temperature and humidity sensor (not shown in the figure) installed on the evaporation suppression shell 1 for detecting the temperature and humidity inside the evaporation suppression shell 1, and a heat exchanger connection port 3 on the evaporation suppression shell 1 for connecting a heat exchanger (not shown in the figure) to regulate the temperature inside the evaporation suppression shell 1 through the heat exchanger.

[0026] In use, beaker 8 is placed on balance tray 12, and evaporation suppression housing 1 is placed over beaker 8. Temperature and humidity sensors can monitor the temperature and humidity values ​​inside evaporation suppression housing 1, and the temperature inside evaporation suppression housing 1 can be controlled and adjusted by heat exchanger, thereby changing the internal humidity and precisely controlling the amount of liquid evaporation in water tank 2. This compensates for the uncontrollable shortcomings of natural evaporation, ensuring that evaporation suppression housing 1 is always in a saturated vapor state, thereby improving the evaporation suppression effect of the measured liquid, reducing the uncertainty introduced by the evaporation of the measured liquid, and improving the reliability of the measurement results.

[0027] Among them, the heat exchanger can be a precision air conditioner. The air outlet of the precision air conditioner is connected to the heat exchanger connection port 3 through a pipe. The air conditioner air with a certain temperature enters the evaporation suppression shell 1 through the heat exchanger connection port 3, changing the internal gas temperature, thereby achieving the regulation of the temperature inside the shell.

[0028] In this embodiment, the evaporation suppression housing 1 includes a lower housing 101 and an upper housing 102 connected to the upper end of the lower housing 101. The bottom of the upper housing 102 is provided with a through hole 4 that communicates with the interior of the lower housing 101, so that the interior spaces of the lower housing 101 and the upper housing 102 are connected.

[0029] In this embodiment, a water tank 2 is disposed inside the upper housing 102 around the through hole 4. A certain amount of liquid is added to the water tank 2. As the internal temperature of the upper housing 102 changes, the evaporation of the liquid in the water tank 2 can be controlled, thereby making up for the shortcomings of uncontrollable natural evaporation and ensuring that the evaporation suppression housing 1 is always in a saturated steam state.

[0030] In this embodiment, the top of the upper housing 102 is provided with a first through hole 5 for the injection tube 16 to pass through, so that the injection tube 16 can be inserted into the beaker 8 through the first through hole 5 and the through hole 4 at the bottom of the upper housing 102 for the measurement of minute liquid flow.

[0031] In this embodiment, the heat exchanger connection port 3 is located on the side wall of the upper housing 102.

[0032] In this embodiment, the upper shell 102 is provided with an inlet and outlet 6 on its side wall. Liquid can be injected into the water tank 2 through the inlet and outlet 6. The height of the inlet and outlet 6 is lower than the height of the inner side baffle 7 of the water tank 2. When the water tank 2 is filled with too much water, the liquid can overflow from the inlet and outlet 6 to prevent the liquid from overflowing from the inner side baffle 7 into the beaker 8 on the lower side.

[0033] In this embodiment, a temperature and humidity sensor interface 9 is provided on the lower housing 101, and the temperature and humidity sensor is installed in the temperature and humidity sensor interface 9.

[0034] In this embodiment, the lower housing 101 is provided with an annular insertion groove 10 at its upper end, and the upper housing 102 is provided with an annular insertion block 11 inserted into the annular insertion groove 10 at its lower end, which facilitates the installation and disassembly of the two and can improve the sealing of the connection between the two.

[0035] In this embodiment, the bottom of the lower housing 101 is provided with a second through hole 14 for the support rod 13 of the balance tray 12 to pass through, so as to avoid affecting the support rod 13 of the balance tray 12 and ensure the normal operation of the measurement.

[0036] In this embodiment, a water receiving tank 15 is provided at the bottom of the lower housing 101 to collect the liquid overflowing from the beaker 8, preventing the overflowing liquid from seeping into the balance core and avoiding damage to the balance.

[0037] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A balance-weighed evaporation-inhibiting structure, characterized by: The device includes an evaporation suppression housing, which contains a water tank. A temperature and humidity sensor is installed on the evaporation suppression housing to detect the temperature and humidity inside the housing. The evaporation suppression housing also has a heat exchanger connection port for connecting to a heat exchanger to regulate the temperature inside the housing.

2. The balance-weighed evaporation-inhibiting structure according to claim 1, characterized in that: The evaporation suppression housing includes a lower housing and an upper housing connected to the upper end of the lower housing. The bottom of the upper housing is provided with a through hole communicating with the interior of the lower housing.

3. The balance-weighed evaporation-inhibiting structure according to claim 2, characterized in that: The water tank is disposed inside the upper housing around the through hole.

4. The balance-weighed evaporation-inhibiting structure according to claim 2, characterized in that: The top of the upper housing is provided with a first through hole for the injection tube to pass through.

5. The balance-weighed evaporation-inhibiting structure according to claim 2, characterized in that: The heat exchanger connection port is located on the side wall of the upper housing.

6. The balance-weighed evaporation-inhibiting structure according to claim 2, characterized in that: The upper housing has an inlet and outlet on its side wall, through which liquid can be injected into the water tank. The height of the inlet and outlet is lower than the height of the inner sidewall of the water tank.

7. The balance-weighed evaporation-inhibiting structure according to claim 2, characterized in that: The lower housing is provided with a temperature and humidity sensor interface, and the temperature and humidity sensor is installed in the temperature and humidity sensor interface.

8. The balance-weighed evaporation-inhibiting structure according to claim 2, characterized in that: The lower housing has an annular insertion groove at its upper end, and the upper housing has an annular insertion block at its lower end that is inserted into the annular insertion groove.

9. The balance-weighed evaporation-inhibiting structure according to claim 2, characterized in that: The bottom of the lower housing is provided with a second through hole for the support rod of the balance tray to pass through.

10. The balance-weighed evaporation-inhibiting structure according to claim 2, characterized in that: The bottom of the lower housing is provided with a water receiving tank for collecting liquid overflowing from the beaker.

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