Automatic quantitative metal measuring vessel

Abstract

The utility model belongs to the technical field of metering equipment, and particularly relates to an automatic quantitative metal measuring vessel which comprises a measuring vessel body, a metering neck arranged on the measuring vessel body, a reading vernier scale, a siphon, a liquid storage tank and a siphon pump, and the reading vernier scale, the siphon, the liquid storage tank and the siphon pump are arranged on one side of the metering neck. The liquid outlet is lower than the liquid inlet; the liquid outlet is connected with the siphon pump, one end of the siphon pipe extends into the metering neck in the gravity direction and is located on the same horizontal plane with the scale value calibrated by the vernier of the reading vernier scale, the other end of the siphon pipe is connected with the liquid inlet, and siphonage is generated through the siphon pump, so that the liquid level in the metering neck is lowered to the scale of the calibrated volume. The process of manual reading through naked eyes is avoided, the metering accuracy of the metal meter is improved, liquid pre-stored in the liquid storage tank can avoid dry pumping of the siphon pump, and the effects of protecting the siphon pump and prolonging the service life of the siphon pump are achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of measuring equipment, and in particular relates to an automatic quantitative metal measuring device. Background Art

[0002] Metal measuring vessels are standard measuring instruments for the volume of liquids such as oils and solutions. They are often used to calibrate the measuring capacity of liquid quantitative transportation or quantitative storage equipment such as gas pumps and liquid storage tanks. Metal measuring vessels are mainly divided into four levels according to the applicable scope of detection accuracy. Their main structure includes a measuring neck, a liquid level tube, a measuring neck scale, an upper cone, a cylinder, a lower cone, and a valve. After liquids of different capacities are passed into metal measuring vessels of corresponding detection volumes, the liquid level in the liquid level tube vertically parallel to the measuring neck is measured using the measuring neck scale to obtain the liquid capacity in the metal measuring vessel.

[0003] In the prior art, for large-volume metal measuring vessels, the positions of their measuring necks and reading vernier scales are higher than the average height of a human body. This requires the measuring personnel to climb up when reading, which is very inconvenient and leads to low measurement efficiency. In addition, after sliding the vernier part of the measuring neck scale to the scale of the calibrated capacity, during the process of injecting liquid into the metal measuring vessel, in order to prevent the liquid volume injected into the metal measuring vessel from being insufficient, it is necessary to ensure that the liquid injected into the metal measuring vessel is more than the set capacity after closing the valve, which causes the liquid level at the measuring neck to be slightly higher than the scale of the calibrated capacity, thereby affecting the accuracy of manual visual judgment of whether the measured volume of the monitored equipment meets the standard. Summary of the Invention

[0004] Based on the above background technology needs, the present application provides an automatic quantitative metal measuring instrument, which can keep the liquid level at the measuring neck consistent with the scale of the measuring neck during the volume measurement process, so as to improve the measurement accuracy and measurement efficiency of the metal measuring instrument.

[0005] To achieve the above objectives, the technical solution of this application is:

[0006] An automatic quantitative metal measuring instrument comprises a measuring instrument body, a measuring neck arranged on the measuring instrument body, a reading vernier scale arranged on one side of the measuring neck, a siphon tube, a liquid storage tank and a siphon pump, wherein a liquid inlet and a liquid outlet are arranged at intervals on the liquid storage tank, and the height of the liquid outlet is lower than that of the liquid inlet; the liquid outlet is connected to the siphon pump, one end of the siphon tube extends into the measuring neck along the direction of gravity and is at the same horizontal plane as the scale value calibrated by the vernier of the reading vernier scale, and the other end is connected to the liquid inlet.

[0007] Preferably, the siphon tube includes a riser, a hose and a downpipe, the riser is connected to the downpipe through the hose, a siphon tube bracket is provided at the upper end of the metering neck, and the riser is fixed in the metering neck by the siphon tube bracket; the lower end of the downpipe is connected to the liquid inlet.

[0008] Preferably, the siphon tube bracket includes a fixing clamp, a support rod and a pipe clamp, the fixing clamp is used to be sleeved on the upper end of the metering neck, one end of the support rod is arranged on the inner side of the fixing clamp, and the other end extends toward the axis of the metering neck, and the pipe clamp is provided at the end of the support rod away from the fixing clamp, and the pipe clamp is used to fix the down pipe along the axis of the metering neck.

[0009] Preferably, the liquid storage tank is further provided with a liquid infusion port, and the liquid infusion port is connected to a liquid infusion pump.

[0010] Preferably, a first liquid level monitor is provided on one side of the liquid storage tank, and the first liquid level monitor is electrically connected to the liquid replenishing pump. The liquid replenishing pump is used to start replenishing liquid to the liquid storage tank or stop replenishing liquid to the liquid storage tank based on the liquid level signal sent by the first liquid level monitor.

[0011] Preferably, an inlet solenoid valve is provided at the liquid inlet, and a liquid outlet solenoid valve is provided at the liquid outlet, and both the inlet solenoid valve and the outlet solenoid valve are electrically connected to the first liquid level monitor, and both the inlet solenoid valve and the outlet solenoid valve open or close the valve based on the liquid level signal sent by the first liquid level monitor.

[0012] Preferably, an exhaust port is provided at the upper end of the liquid storage tank, and an exhaust valve is provided at the exhaust port.

[0013] Preferably, the measuring vessel body is provided with an automatic liquid inlet valve, and a second liquid level monitor is provided on one side of the measuring neck. The second liquid level monitor is electrically connected to the automatic liquid inlet valve, and the automatic liquid inlet valve is used to open or close the valve based on the liquid level signal sent by the second liquid level monitor.

[0014] By adopting the above technical solution, compared with the existing technology, this application has at least the following beneficial effects:

[0015] The siphon pump is used to extract the liquid in the liquid storage tank at a position far lower than the height of the measuring instrument body, and the liquid level in the measuring neck is lowered to the scale of the calibrated capacity by utilizing the siphon principle, thereby avoiding the process of manual reading by the naked eye and improving the measurement accuracy of the metal measuring instrument in the present application; when the liquid level in the measuring neck reaches the scale of the calibrated capacity, the liquid level height is also lower than the height of the end of the siphon tube. At this time, when the liquid level in the liquid storage tank is higher than the liquid inlet, obvious bubbles will appear. The bubbles can intuitively prompt the measurement personnel to measure the liquid level in the neck to reach the scale of the calibrated capacity, without the need for the measurement personnel to climb to a high height, thereby improving the portability and efficiency of the measurement; in addition, the liquid in the liquid storage tank can prevent the siphon pump from dry pumping, thereby protecting the siphon pump and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the automatic quantitative metal measuring device in the embodiment.

[0017] Figure 2 Schematic diagram of the structure of the siphon tube bracket in the embodiment.

[0018] Figure 3 AA is a cross-sectional view of the pipe clamp in the embodiment.

[0019] Figure 4 FIG. 1 is a partial enlarged schematic diagram B of the pipe clamp in the embodiment. FIG.

[0020] In the figure: measuring vessel body 10, measuring neck 11, reading vernier 12, siphon tube bracket 13, fixing clamp 131, support rod 132, pipe clamp 133, automatic liquid inlet valve 14, second liquid level monitor 15, siphon tube 20, rising pipe 21, hose 22, downpipe 23, liquid storage tank 30, liquid inlet 31, liquid inlet solenoid valve 311, liquid outlet 32, liquid outlet solenoid valve 321, liquid replenishing port 33, first liquid level monitor 34, exhaust port 35, exhaust valve 351, siphon pump 40, liquid replenishing pump 50, water filling tank 60, water replenishing tank 70. DETAILED DESCRIPTION

[0021] It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of this application can be combined with each other. The following will further describe the technical solution of this application in conjunction with the drawings of the embodiments of this application, and this application is not limited to the following specific implementation methods.

[0022] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of this application, it should be understood that if there are terms such as "upper", "lower", "inner", "outer", "left", "right", "front", "back", "top", "bottom" and the like indicating directions or positional relationships, they are based on the orientations or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the structure or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0023] The following is combined with Figure 1 To the attached Figure 4 The present application is further described in detail with reference to specific embodiments.

[0024] The present application discloses an automatic quantitative metal measuring instrument, comprising a measuring instrument body 10, a measuring neck 11 provided on the measuring instrument body 10, a reading vernier scale 12 provided on the side of the measuring neck 11, a siphon tube 20, a liquid storage tank 30 and a siphon pump 40. The liquid storage tank 30 is a cylindrical tank body, which is placed at a position far below the height of the measuring instrument body 10, such as on the ground. A liquid inlet 31 and a liquid outlet 32 ​​are provided on its side at intervals. The height of the liquid outlet 32 ​​is lower than the liquid inlet 31, wherein the liquid outlet 32 ​​is connected to the siphon pump 40, one end of the siphon tube 20 extends into the measuring neck 11 along the direction of gravity, and the lower end of the pipe section of the siphon tube 20 extending into the interior of the measuring neck 11 is at the same horizontal plane as the scale value calibrated by the vernier of the reading vernier scale 12, and the other end of the siphon tube 20 is connected to the liquid inlet 31.

[0025] Specifically, the measuring vessel body 10 is a container consisting of an upper cone, a main body and a lower cone. The upper part of the container is connected to the above-mentioned measuring neck 11 along the height direction. The measuring neck 11 includes a transparent cylinder for observing the liquid level and a splash-proof cylinder arranged at the upper end of the transparent cylinder. This structure makes the measuring neck 11 similar to a funnel shape; the above-mentioned reading vernier 12 is hung on the outside of the transparent cylinder, and a vernier is slidably provided on the reading vernier 12. The scale value range indicated by one side of the vernier is the liquid volume range that needs to be measured in the metal measuring vessel; a water filling tank 60 is also provided outside the measuring vessel body 10, and the water filling tank 60 contains the liquid medium for measurement.

[0026] The process of using the above-mentioned automatic quantitative metal measuring device is as follows:

[0027] After the vernier is slid up and down and stopped at the scale of the volume value of the liquid to be measured in the measuring body 10, the position of the lower end of the siphon tube 20 is adjusted up and down so that the lower end of the siphon tube 20 is at the same level as the scale value indicated by the vernier, and the volume indicated by the scale value is the volume of the liquid to be measured by the metal measuring device; after the height of the liquid injected into the liquid storage tank 30 is higher than the height of the liquid inlet, the siphon pump 40 is started to extract the liquid injected into the liquid storage tank 30, and as the liquid level in the liquid storage tank 30 decreases and the air pressure in the space in the liquid storage tank 30 decreases to below the standard atmospheric pressure, the liquid in the measuring neck 11 above the scale value calibrated by the vernier is extracted into the liquid storage tank 30 through the siphon tube 20 under the action of siphon, so that the liquid level in the measuring neck 11 is accurately lowered to the position of the calibrated scale value.

[0028] The automatic quantitative metal measuring device has at least the following beneficial effects:

[0029] The liquid in the liquid storage tank 30 far below the height of the measuring body 10 is extracted by the siphon pump 40, and the liquid level in the measuring neck 11 is lowered to the calibrated scale value by using the siphon principle, which avoids the process of manual reading by the naked eye and improves the measurement accuracy of the metal measuring device; when the liquid level in the measuring neck 11 reaches the calibrated scale value, the height of the liquid level is also lower than the height of the end of the siphon tube 20, at this time, the liquid level in the liquid storage tank 30 will have obvious bubbles under the condition of being higher than the liquid inlet 31, and the bubbles can directly indicate the liquid level in the measuring neck 11 to reach the calibrated scale value, so the measuring personnel do not need to climb to read the scale, which improves the measurement portability and efficiency; in addition, the liquid in the liquid storage tank 30 can avoid dry extraction of the siphon pump 40, so as to protect the siphon pump 40 and prolong its service life.

[0030] In addition, the present application also provides some more specific embodiments to perfect the automatic quantitative metal measuring device.

[0031] Further, when the vernier of the reading vernier scale 12 needs to be adjusted in position in order to adjust the volume of the liquid medium injected into the measuring body 10, in order to facilitate the up and down adjustment of the siphon tube 20 according to the position of the vernier, the siphon tube 20 comprises a rising tube 21, a hose 22 and a descending tube 23, wherein the rising tube 21 is located in the measuring neck 11, the descending tube 23 is located outside the measuring neck 11 and extends downward along the outer side wall of the measuring neck 11, the lower end of the descending tube 23 communicates with the liquid inlet 31, the upper end of the rising tube 21 communicates with the upper end of the descending tube 23 through the hose 22, and the hose 22 is a flexible tube, so that the position of the rising tube 21 is adjusted up or down without affecting the descending tube 23; the upper end of the measuring neck 11 is provided with a siphon tube support 13, the rising tube 21 is stopper matched with the siphon tube support 13, the siphon tube support 13 is used to fix the rising tube 21 to the inside of the measuring neck 11, and the height of the rising tube 21 can be adjusted through the siphon tube support 13.

[0032] Specifically, in one embodiment, the above-mentioned siphon tube bracket 13 is a guide tube fixing device of a metal measuring instrument disclosed in the utility model with publication number CN219935070U. The guide tube fixing device of the metal measuring instrument includes a fixing ring, at least 2 brackets and a guide tube fixing assembly. The fixing ring is installed on the upper end of the measuring neck 11 of the metal measuring instrument, and the bracket is vertically installed on the fixing ring. The guide tube fixing assembly is set on the bracket. The guide tube is installed in the guide tube fixing assembly. The height of the guide tube can be controlled by adjusting the height of the adjusting sleeve on the bracket.

[0033] In another embodiment, the siphon tube bracket 13 includes a fixing clamp 131, a support rod 132 and a pipe clamp 133, wherein one side of the clamp body of the fixing clamp 131 is open, and closing plates are provided on the clamp body on both sides of the opening, and the closing plates are provided with thread holes. By screwing the fastening screws that match the thread holes, a pair of closing plates can be closed, so that the opening of the fixing clamp 131 is closed, so that the lower half of the clamp body of the fixing clamp 131 is sleeved on the upper end of the metering neck 11; the upper half of the clamp body of the fixing clamp 131 is located on the inside of the clamp body and a support rod 132 is provided, the support rod 132 is riveted or screwed to the clamp body, and the end of the support rod 132 away from the clamp body extends horizontally toward the axis of the metering neck 11, and the support rod 132 is away from the above The above-mentioned pipe clamp 133 is set at one end of the fixed clamp 131. In one embodiment, the structure of the pipe clamp 133 is roughly the same as that of the fixed clamp 131. The pipe clamp 133 is a hoop body with a diameter much smaller than the metering neck 11 and slightly larger than the riser 21. A screw hole is set on one side of the opening of the hoop body for tightening or loosening the hoop body opening with the fastening screw, so that the riser 21 passing through the hoop body can be adjusted up and down. One end of the above-mentioned support rod 132 is connected to the pipe clamp 133 by welding or bonding, so that the axis of the hoop body of the pipe clamp is coaxial with the axis of the metering neck 11. By adopting the same operation method as the fixed clamp 131, the riser 21 can be fixed to the axis of the metering neck 11, and loosening the fastening screw of the pipe clamp 133 can also make the riser 21 slide up and down.

[0034] Furthermore, to replenish the liquid medium in the liquid storage tank 30 in a timely manner, a liquid replenishment port 33 is provided at the upper end of the liquid storage tank 30, and a liquid replenishment pump 50 is connected to the liquid replenishment port 33. The liquid replenishment pump 50 can be connected to a water replenishment tank 70 through a pipe. When the liquid in the liquid storage tank 30 is depleted, the liquid medium in the water replenishment tank 70 is pumped into the liquid storage tank 30 by the liquid replenishment pump 50 for replenishment.

[0035] Furthermore, in order to enable the rehydration pump 50 to automatically rehydrate and prevent the siphon pump 40 from drying out after the liquid in the liquid storage tank 30 is exhausted, a first liquid level monitor 34 is provided on one side of the liquid storage tank 30. The first liquid level monitor 34 is electrically connected to the rehydration pump 50. Specifically, the first liquid level monitor 34 includes at least two photoelectric liquid level sensors of model SPX-613 and a first PLC controller. Both photoelectric liquid level sensors are electrically connected to the rehydration pump 50 through the first PLC controller to form a control loop. One of the photoelectric liquid level sensors is fixed to the outer wall of the liquid storage tank 30 near the upper end and above the liquid inlet 31, and the other is fixed to the outer wall of the liquid storage tank 30 near the lower end and above the liquid outlet 32. The positions of the above two liquid level sensors are respectively intended to be the highest liquid level and the lowest liquid level in the liquid storage tank 30.

[0036] As the liquid level in the liquid storage tank 30 gradually drops below the liquid level range detected by the photoelectric liquid level sensor at the lower end, the sensor sends a liquid level value signal to the first PLC controller. The first PLC controller controls the liquid replenishment pump 50 to automatically power on and start according to the set program based on the liquid level value below the lowest liquid level range, and replenishes the liquid medium into the liquid storage tank 30; when the liquid level in the liquid storage tank 30 rises to the liquid level range that can be detected by the sensor at the upper end, the sensor also sends a liquid level value signal to the first PLC controller, so that the first PLC controller controls the liquid replenishment pump 50 to turn off according to the set program and stop supplying liquid to the liquid storage pump. The control program of the first PLC controller is not the focus of this case, so it will not be described in detail.

[0037] Furthermore, to reduce the loss of liquid medium during the rehydration process, a liquid outlet solenoid valve 321 is provided at the liquid outlet 32, and a liquid inlet solenoid valve 311 is provided at the liquid inlet 31. The liquid inlet solenoid valve 311 and the liquid outlet solenoid valve 321 are electrically connected via the liquid level monitor to form a control circuit. When the first PLC controller receives a liquid level signal from the photoelectric liquid level sensor at the lower end, it controls the liquid inlet solenoid valve 311 and the liquid outlet solenoid valve 321 to close according to a set program, thereby preventing the liquid in the liquid storage tank 30 from flowing out of the liquid storage tank 30 through the liquid outlet 32 ​​or the liquid inlet 31 during the rehydration process. When the first PLC controller receives a liquid level signal from the photoelectric liquid level sensor at the upper end, it controls the liquid inlet solenoid valve 311 and the liquid outlet solenoid valve 321 to open according to a set program.

[0038] Furthermore, in order to balance the air pressure in the liquid storage tank 30 during the liquid replenishment process, an exhaust port 35 is provided at the upper end of the liquid storage tank 30 , and an exhaust valve 351 is provided at the exhaust port 35 .

[0039] Specifically, the exhaust valve 351 is a one-way valve. During the process of replenishing liquid into the liquid storage tank 30, as the liquid level in the liquid storage tank 30 gradually rises, the air pressure in the upper space of the liquid storage tank 30 gradually increases. After the one-way valve opens, the air pressure in the liquid storage tank 30 is reduced, so that the liquid replenishment pump 50 can replenish liquid into the liquid storage tank 30.

[0040] Furthermore, in order to enable the measuring vessel body 10 to automatically replenish liquid, an automatic liquid inlet valve 14 is provided at the inlet of the measuring vessel body 10, and a second liquid level monitor 15 is provided on one side of the measuring neck 11. The structure of the second liquid level monitor 15 is roughly the same as that of the first liquid level monitor 34. The second liquid level monitor 15 includes a photoelectric liquid level sensor and a second PLC controller. The inlet of the automatic liquid inlet valve 14 is connected to the water filling tank 60. The second liquid level monitor 15 is electrically connected to the automatic liquid inlet valve 14 through the second PLC controller to form a control loop.

[0041] The automatic liquid inlet valve 14 is a solenoid valve and is set to a normally open state. When the second liquid level monitor 15 sends a liquid level signal consistent with the scale value calibrated by the vernier of the reading vernier scale 12, the second PLC controller controls the automatic liquid inlet valve 14 to execute a valve closing action to prevent excessive liquid from being injected into the measuring vessel body 10. The liquid level injected into the measuring vessel body 10 is close to the scale value of the calibrated capacity, thereby improving the measurement accuracy and measurement efficiency of the metal measuring vessel.

[0042] Combining the multiple structures and features of the above embodiments, the above automatic quantitative metal measuring instrument can automatically perform measuring operations, thereby improving the measurement efficiency of the metal measuring instrument.

[0043] Obviously, the above embodiments of the present application are merely examples for the purpose of clearly illustrating the present application, and are not intended to limit the implementation methods of the present application. For those skilled in the art, other variations or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An automatic quantitative metal measuring instrument, comprising a measuring instrument body, a measuring neck provided on the measuring instrument body, and a reading vernier provided on one side of the measuring neck, characterized in that: It also includes a siphon tube, a liquid storage tank and a siphon pump. The liquid storage tank is provided with a liquid inlet and a liquid outlet at intervals, and the height of the liquid outlet is lower than the liquid inlet; the liquid outlet is connected to the siphon pump, one end of the siphon tube extends into the measuring neck along the direction of gravity and extends to a position at the same horizontal plane as the scale value calibrated by the vernier of the reading vernier scale, and the other end is connected to the liquid inlet.

2. The automatic quantitative metal measuring device according to claim 1, characterized in that: The siphon tube includes an ascending tube, a hose and a descending tube. The ascending tube is connected to the descending tube through the hose. A siphon tube bracket is provided at the upper end of the metering neck. The ascending tube is fixed in the metering neck by the siphon tube bracket. The lower end of the descending tube is connected to the liquid inlet.

3. The automatic quantitative metal measuring device according to claim 2, characterized in that: The siphon tube bracket includes a fixing clamp, a support rod and a pipe clamp. The fixing clamp is used to be sleeved on the upper end of the metering neck. One end of the support rod is arranged on the inner side of the fixing clamp, and the other end extends toward the axis of the metering neck. The pipe clamp is provided at the end of the support rod away from the fixing clamp. The pipe clamp is used to fix the down pipe along the axis of the metering neck.

4. The automatic quantitative metal measuring device according to claim 1, characterized in that: The liquid storage tank is also provided with a liquid infusion port, and the liquid infusion port is connected to a liquid infusion pump.

5. The automatic quantitative metal measuring device according to claim 4, characterized in that: A first liquid level monitor is provided on one side of the liquid storage tank, and the first liquid level monitor is electrically connected to the liquid replenishing pump. The liquid replenishing pump is used to start replenishing liquid to the liquid storage tank or stop replenishing liquid to the liquid storage tank based on the liquid level signal sent by the first liquid level monitor.

6. The automatic quantitative metal measuring device according to claim 5, characterized in that: An inlet solenoid valve is provided at the liquid inlet, and a outlet solenoid valve is provided at the liquid outlet, and both the inlet solenoid valve and the outlet solenoid valve are electrically connected to the first liquid level monitor, and both the inlet solenoid valve and the outlet solenoid valve open or close the valve based on the liquid level signal sent by the first liquid level monitor.

7. The automatic quantitative metal measuring device according to claim 4, characterized in that: An exhaust port is provided at the upper end of the liquid storage tank, and an exhaust valve is provided at the exhaust port.

8. The automatic quantitative metal measuring device according to claim 1, characterized in that: The measuring vessel body is provided with an automatic liquid inlet valve, and a second liquid level monitor is provided on one side of the measuring neck. The second liquid level monitor is electrically connected to the automatic liquid inlet valve, and the automatic liquid inlet valve is used to open or close the valve based on the liquid level signal sent by the second liquid level monitor.

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