A multi-stage flow regulating device and moisture meter

Abstract

This invention provides a multi-stage flow rate regulating device and a moisture meter. The multi-stage flow rate regulating device is located between the air pump and the internal ventilation device of the moisture meter, and is used to regulate the ventilation flow rate of the internal ventilation device. It includes: a first connecting mechanism for connecting the air pump, causing the air pump to branch out into multiple parallel air channels; a second connecting mechanism for connecting the internal ventilation device, causing the multiple parallel air channels to converge into the internal ventilation device; multiple connecting air pipes, each with its ends connected to the first and second connecting mechanisms respectively, forming multiple parallel air channels; multiple throttling valves, each located on one of the air channels; and multiple solenoid valves, located on at least some of the air channels, for controlling the opening and closing of the corresponding air channels, thereby regulating the ventilation flow rate of the internal ventilation device. The multi-stage flow rate regulating device and moisture meter provided by this invention can achieve automatic switching of multi-stage ventilation flow rates, thus significantly improving the testing efficiency of the moisture meter.

Description

Technical Field

[0001] This utility model relates to the field of moisture determination technology, and in particular to a multi-stage flow regulating device and a moisture meter. Background Technology

[0002] A moisture meter, also known as a moisture analyzer, is an instrument used to detect the moisture content in a sample. Existing moisture meters rely on a single, fixed-flow gas source during testing, with the flow rate pre-set during instrument setup. This prevents the selection of different flow rates for different stages, resulting in low testing efficiency. Utility Model Content

[0003] To address the technical problems in the existing technology, this utility model provides a multi-stage flow regulation device and moisture meter that can realize automatic switching of multi-stage ventilation flow.

[0004] A multi-stage flow rate regulating device, located between the air pump and the internal ventilation device of a moisture meter, is used to regulate the ventilation flow rate of the internal ventilation device, comprising: The first connecting mechanism is used to connect the air pump, so that the air pump branches out multiple parallel air channels; The second connecting mechanism is used to connect the internal ventilation device of the instrument, so that multiple parallel air channels can be merged into the internal ventilation device of the instrument. Multiple connecting tubes, each connecting tube having its two ends connected to a first connecting mechanism and a second connecting mechanism respectively, forming multiple parallel airways; Multiple throttle valves are located on each air passage; Multiple solenoid valves, located at least on some air passages, are used to control the opening and closing of the corresponding air passages, thereby regulating the airflow of the internal ventilation device of the instrument.

[0005] Preferably, the first connecting mechanism includes a first three-way quick connector and a second three-way quick connector. The air inlet of the first three-way quick connector is connected to an air pump, and one air outlet is connected to the air inlet of the second three-way quick connector, while the other air outlet is connected to a connecting air pipe on an air passage. The air inlet of the second three-way quick connector is connected to the air outlet of the first three-way quick connector, and the two air outlets are respectively connected to connecting air pipes on two air passages.

[0006] Preferably, the second connection mechanism includes a third three-way quick connector and a fourth three-way quick connector. The outlet of the third three-way quick connector is connected to the internal ventilation device of the instrument, and one air inlet is connected to the outlet of the fourth three-way quick connector, while the other air inlet is connected to a connecting air tube on an airway. The outlet of the fourth three-way quick connector is connected to the air inlet of the third three-way quick connector, and the two air inlets are respectively connected to connecting air tubes on two airways.

[0007] Preferably, the airway has three channels.

[0008] Preferably, the throttle valve is a manual throttle valve, used to adjust the ventilation flow rate of each gas passage according to the commonly used gas flow rate requirements.

[0009] Preferably, the number of solenoid valves is one less than the number of air passages, and the air passages without solenoid valves are used to provide the minimum gas flow rate.

[0010] A moisture meter includes an air pump, an internal ventilation device, and a multi-stage flow regulating device located between the air pump and the internal ventilation device for adjusting the ventilation flow of the internal ventilation device, wherein the multi-stage flow regulating device is as described above.

[0011] Preferably, the internal ventilation device of the instrument includes an annular tube and a vertical tube. The vertical tube extends downward from the annular tube and communicates with the annular tube, with its end being the air inlet of the internal ventilation device. The annular tube has a notch, and the air outlets of the internal ventilation device are formed at both ends of the notch.

[0012] Preferably, a flow display device is also provided between the multi-stage flow regulating device and the internal ventilation device of the instrument.

[0013] Preferably, the moisture meter includes a main body, in which the air pump, the internal ventilation device, and the multi-stage flow regulating device are all located. A furnace is provided on the upper surface of the main body, and the air outlet of the internal ventilation device is connected to the furnace.

[0014] Compared with the prior art, the multi-stage flow regulating device and moisture meter provided by this utility model, by setting up multiple parallel air channels and throttling valves and solenoid valves located on each air channel, controls the opening and closing of the corresponding air channels through the solenoid valves, thereby regulating the air flow of the internal ventilation device of the instrument, so as to realize the automatic switching of multi-stage ventilation flow, thereby greatly improving the testing efficiency of the moisture meter. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of a multi-stage flow regulation device provided in one embodiment; Figure 2 For having Figure 1 The diagram shows the structure of a moisture meter with a multi-stage flow regulation device. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0019] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0020] like Figure 1 , Figure 2 As shown in the figure, this utility model embodiment provides a moisture meter, which includes a main body 1 and an upper cover 2.

[0021] The upper surface of the main body 1 is provided with a furnace chamber 11, and the outer shell is provided around it. Figure 2 The internal structure is shown in the middle (the outer shell has been removed). The upper cover 2 is pivotally connected to the main body 1 and can be opened or closed with the main body 1.

[0022] The main body 1 also includes an air pump 12, an internal ventilation device 13, and a multi-stage flow regulating device located between the air pump 12 and the internal ventilation device 13 for adjusting the ventilation flow of the internal ventilation device 13. The air pump 12, the internal ventilation device 13, and the multi-stage flow regulating device are all located in the main body 1, and the outlet of the internal ventilation device 13 is connected to the furnace 11.

[0023] In this embodiment, the internal ventilation device 13 of the instrument includes an annular tube 131 and a vertical tube 132. The vertical tube 132 extends downward from the annular tube 131 and communicates with the annular tube 131. Its end is the air inlet of the internal ventilation device 13 of the instrument. The annular tube 131 has a notch, and the air outlets of the internal ventilation device 13 of the instrument are formed at both ends of the notch.

[0024] Preferably, a flow display device 15 is also provided between the multi-stage flow regulating device and the internal ventilation device 13 of the instrument to display the flow rate of the gas entering the internal ventilation device 13 of the instrument.

[0025] The multi-stage flow regulating device includes a first connecting mechanism 141, a second connecting mechanism 142, multiple connecting air pipes 143, multiple throttle valves 144, and multiple solenoid valves 145.

[0026] The first connecting mechanism 141 is used to connect the air pump 12, allowing the air pump 12 to branch out multiple parallel air channels. In this embodiment, there are three air channels. The first connecting mechanism 141 includes a first three-way quick connector 1411 and a second three-way quick connector 1412. The air inlet of the first three-way quick connector 1411 is connected to the air pump 12, and one air outlet is connected to the air inlet of the second three-way quick connector 1412, while the other air outlet is connected to the connecting air pipe 143 on one of the air channels. The air inlet of the second three-way quick connector 1412 is connected to the air outlet of the first three-way quick connector 1411, and the two air outlets are respectively connected to the connecting air pipes 143 on two air channels. Of course, in other embodiments, the first connecting mechanism 141 can also be composed of other components besides the three-way quick connector, but the three-way quick connector has a simple and reliable structure, low cost, and is easy to assemble.

[0027] The second connecting mechanism 142 is used to connect to the internal ventilation device 13 of the instrument, so that multiple parallel air passages converge to the internal ventilation device 13. In this embodiment, the second connecting mechanism 142 includes a third three-way quick connector 1421 and a fourth three-way quick connector 1422. The outlet of the third three-way quick connector 1421 is connected to the internal ventilation device 13 of the instrument, and one air inlet is connected to the outlet of the fourth three-way quick connector 1422, while the other air inlet is connected to the connecting air pipe 143 on one air passage. The outlet of the fourth three-way quick connector 1422 is connected to the air inlet of the third three-way quick connector 1421, and the two air inlets are respectively connected to the connecting air pipes 143 on two air passages. Of course, in other embodiments, the second connecting mechanism 142 can also be composed of other components besides the three-way quick connector, but the three-way quick connector has a simple and reliable structure, low cost, and is easy to assemble.

[0028] Each connecting airway 143 is connected at both ends to the first connecting mechanism 141 and the second connecting mechanism 142, forming multiple parallel airways.

[0029] Multiple throttle valves 144 are located on each gas passage. In this embodiment, the throttle valves 144 are manual throttle valves 144, used to adjust the ventilation flow rate of each gas passage according to the commonly used gas flow rate requirements. The manual throttle valves 144 are simple, reliable, and inexpensive.

[0030] Multiple solenoid valves 145 are located on at least some of the air passages to control the opening and closing of the corresponding air passages, thereby regulating the airflow of the internal ventilation device 13 of the instrument. In this embodiment, the number of solenoid valves 145 is one less than the number of air passages (i.e., two in this embodiment). The air passages without solenoid valves 145 are used to provide the minimum gas flow. Of course, solenoid valves 145 can also be installed on all air passages to control the opening and closing of all air passages. However, having one less solenoid valve 145 than the number of air passages simplifies the structure, reduces costs, and facilitates control.

[0031] When the moisture analyzer is running, the air pump 12 automatically starts when gas needs to be introduced. The gas flows through the air passage without the solenoid valve 145 (at the set minimum gas flow rate) through the pipeline into the instrument's internal ventilation device 13, and then into the instrument's furnace. When the gas flow rate needs to be increased, the first set of solenoid valves 145 automatically starts, increasing the gas flow rate by a certain amount. This increased flow rate is then combined with the gas at the set minimum gas flow rate into a single pipeline leading to the instrument's internal ventilation device 13. When an even greater increase in flow rate is needed, the second set of solenoid valves 145 automatically starts, simultaneously increasing the gas flow rate by a certain amount. This increased flow rate is then combined into a single pipeline leading to the instrument's internal ventilation device 13.

[0032] When the instrument needs to reduce the gas flow rate, it can automatically close a corresponding set of solenoid valves 145 based on the specific flow rate reduction, thus reducing the gas flow rate. When the instrument does not need to supply gas, it automatically closes the solenoid valves 145 and the air pump 12, resulting in a zero gas flow rate.

[0033] This embodiment has three air passages, but two or other numbers can be set as needed. Adjusting the number of air passages corresponds to adjusting the number of throttle valves 144 and solenoid valves 145.

[0034] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A multi-stage flow rate regulating device, located between the air pump and the internal ventilation device of a moisture meter, for regulating the ventilation flow rate of the internal ventilation device, characterized in that, include: The first connecting mechanism is used to connect the air pump, so that the air pump branches out multiple parallel air channels; The second connecting mechanism is used to connect the internal ventilation device of the instrument, so that multiple parallel air channels can be merged into the internal ventilation device of the instrument. Multiple connecting tubes, each connecting tube having its two ends connected to a first connecting mechanism and a second connecting mechanism respectively, forming multiple parallel airways; Multiple throttle valves are located on each air passage; Multiple solenoid valves, located at least on some air passages, are used to control the opening and closing of the corresponding air passages, thereby regulating the airflow of the internal ventilation device of the instrument.

2. The multi-stage flow regulating device according to claim 1, characterized in that, The first connecting mechanism includes a first three-way quick connector and a second three-way quick connector. The air inlet of the first three-way quick connector is connected to an air pump, and one air outlet is connected to the air inlet of the second three-way quick connector. The other air outlet is connected to a connecting air pipe on an air passage. The air inlet of the second three-way quick connector is connected to the air outlet of the first three-way quick connector, and the two air outlets are respectively connected to connecting air pipes on two air passages.

3. The multi-stage flow regulating device according to claim 1, characterized in that, The second connection mechanism includes a third three-way quick connector and a fourth three-way quick connector. The outlet of the third three-way quick connector is connected to the internal ventilation device of the instrument. One air inlet is connected to the outlet of the fourth three-way quick connector, and the other air inlet is connected to a connecting air tube on an airway. The outlet of the fourth three-way quick connector is connected to the air inlet of the third three-way quick connector, and the two air inlets are respectively connected to connecting air tubes on two airways.

4. The multi-stage flow regulating device according to claim 1, characterized in that, The airway consists of three channels.

5. The multi-stage flow regulating device according to claim 1, characterized in that, The throttle valve is a manual throttle valve, used to adjust the ventilation flow rate of each gas passage according to the commonly used gas flow rate requirements.

6. The multi-stage flow regulating device according to claim 1, characterized in that, The number of solenoid valves is one less than the number of air passages, and the air passages without solenoid valves are used to provide the minimum gas flow rate.

7. A moisture meter, characterized in that, It includes an air pump, an internal ventilation device, and a multi-stage flow regulating device located between the air pump and the internal ventilation device for adjusting the ventilation flow of the internal ventilation device, wherein the multi-stage flow regulating device is the multi-stage flow regulating device as described in any one of claims 1 to 6.

8. The moisture meter according to claim 7, characterized in that, The internal ventilation device of the instrument includes an annular tube section and a vertical tube section. The vertical tube section extends downward from the annular tube section and communicates with the annular tube section. Its end is the air inlet of the internal ventilation device of the instrument. The annular tube section has a notch, and the air outlet of the internal ventilation device of the instrument is formed at both ends of the notch.

9. The moisture meter according to claim 7, characterized in that, A flow display device is also provided between the multi-stage flow regulation device and the internal ventilation device of the instrument.

10. The moisture meter according to claim 9, characterized in that, The moisture meter includes a main body, in which the air pump, the internal ventilation device, and the multi-stage flow regulating device are all located. A furnace is provided on the upper surface of the main body, and the air outlet of the internal ventilation device is connected to the furnace.

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