Urea filling machine automatic calibration measuring device
By designing a combination of a fluid conduction device and a liquid level sensor in a urea filling machine, the error problem caused by the detection medium impacting the liquid level sensor float when it flows into the standard metal gauge is solved, and the accuracy and observability of the detection are improved.
Patent Information
- Application Number
- CN202421372052.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-17
AI Technical Summary
During the verification process of the urea filling machine, the detection medium may easily impact the float of the liquid level sensor when it flows into the standard metal measuring tool, resulting in detection errors.
An automatic urea filling machine metering device is designed, using a combination of a liquid conduction device and a liquid level sensor. Through the setting of the metering neck, liquid injection tube and exhaust pipe, the detection medium is prevented from directly impacting the float of the liquid level sensor.
It effectively avoids errors caused by the level sensor float, improves the accuracy of the liquid level of the medium, and facilitates the detector to observe the working status of the level sensor through the coordination of readings.
Smart Images
Figure CN222635587U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of measuring equipment, in particular to automatic calibration device of a urea filling machine. Background Art
[0002] The existing standard metal measuring tool mainly includes a main body composed of an upper cone, a cylinder and a lower cone connected to each other. During the calibration process of the urea filling machine, a filling gun can be used to inject the test medium into the standard metal measuring tool, and the test equipment such as temperature sensors and liquid level sensors can be used to calibrate the test medium in the standard metal measuring tool.
[0003] In the process of using a filling gun to input the detection medium into the standard metal measuring tool, the injected detection medium is more likely to impact the float of the liquid level sensor when flowing downward into the standard metal measuring tool, which can easily cause detection errors. For this reason, we proposed an automatic calibration device for urea filling machines to solve the above problem. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] The utility model provides an automatic calibration device for a urea filling machine, which solves the problem that in the process of inputting a detection medium into a standard metal measuring tool using a filling gun, the injected detection medium is more likely to impact the float of a liquid level sensor when flowing downward into the standard metal measuring tool, thereby easily causing a detection error.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic calibration meter device for a urea filling machine, comprising a measuring instrument, a splash-proof bucket, a liquid guiding device and a liquid level sensor, a liquid injection port is formed on the top of the splash-proof bucket, and the upper and lower ends of the liquid guiding device are respectively connected to the splash-proof bucket and the measuring instrument, the liquid level sensor is installed on the inner top of the splash-proof bucket, and the lower end of the liquid level sensor extends into the inner bottom of the measuring instrument, wherein the liquid guiding device comprises a metering neck, a liquid injection pipe and an exhaust pipe, the upper end of the liquid injection pipe extends into the splash-proof bucket, the lower end of the liquid injection pipe extends into the inner bottom of the measuring instrument, the inner cavity of the liquid injection pipe is respectively communicated with the liquid injection port of the splash-proof bucket and the inner cavity of the measuring instrument, the upper ends of the metering neck and the exhaust pipe are both connected to the bottom of the splash-proof bucket, the lower ends of the metering neck and the exhaust pipe are both connected to the top of the measuring instrument, the liquid level sensor passes through the metering neck, and the float in the liquid level sensor can be moved in or out of the metering neck.
[0008] Preferably, the automatic calibration device of the urea filling machine also includes a reading scale, which is installed between the splash-proof bucket and the measuring vessel, and the measuring neck is provided with an observation window that matches the float in the liquid level sensor and the reading scale.
[0009] It is further preferred that the measuring instrument includes a barrel body, an upper cone, a lower cone, a bracket and several leveling structures, the upper end and the lower end of the barrel body are fixedly connected to the upper cone and the lower cone respectively, and the inner cavities of the barrel body, the upper cone and the lower cone are communicated, the top of the bracket is fixedly connected to the lower cone, and several leveling structures are installed below the bracket with adjustable height.
[0010] It is further preferred that the automatic calibration meter device of the urea filling machine also includes a meter thermometer and a liquid filling port thermometer, the liquid filling port thermometer is installed on the upper cone, and the detection end of the liquid filling port thermometer extends into the inner cavity of the barrel body, the meter thermometer is installed on the liquid filling tube, and the detection end of the meter thermometer extends into the inner cavity of the liquid filling tube.
[0011] In a further preferred embodiment, the automatic calibration dosing device of the urea filling machine further comprises a liquid discharge pipe, the liquid discharge pipe is connected to the lower end of the lower cone, and a liquid discharge control valve is installed on the liquid discharge pipe.
[0012] It is further preferred that a filling gun stabilizing device is also fixedly connected to the top of the splash-proof bucket.
[0013] (III) Beneficial effects
[0014] Compared with the prior art, the utility model provides an automatic calibration device for a urea filling machine, which has the following beneficial effects:
[0015] The utility model is provided with a liquid guiding device, so that when the detection medium is added in the vector meter by using a filling gun, the detection medium can be prevented from impacting the float in the liquid level sensor, thereby avoiding the error caused by the float in the liquid level sensor and improving the accuracy of the detection of the detection medium liquid level.
[0016] In the utility model, the measuring neck, the liquid level sensor and the reading ruler are arranged in coordination, so that the inspector can conveniently observe the working state and the liquid level state of the liquid level sensor. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic structural diagram of an automatic calibration device for a urea filling machine according to the implementation scheme.
[0018] In the figure: 10, splash-proof bucket; 20, liquid guiding device; 21, measuring neck; 22, liquid filling pipe; 23, exhaust pipe; 30, measuring vessel; 31, barrel body; 32, upper cone; 33, lower cone; 34, bracket; 35, leveling structure; 40, float; 50, reading scale; 60, measuring vessel thermometer; 70, liquid filling port thermometer; 80, liquid discharge pipe. DETAILED DESCRIPTION
[0019] 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1 , a urea filling machine automatic calibration meter device, which may include a splash-proof bucket 10, a liquid guide device 20, a measuring vessel 30, a liquid level sensor, a reading scale 50, a measuring vessel thermometer 60, a liquid injection port thermometer 70 and a liquid discharge pipe 80. A liquid injection port is formed on the top of the splash-proof bucket 10 for cooperating with a filling gun to inject a detection medium. The upper and lower ends of the liquid guide device 20 are respectively connected to the splash-proof bucket 10 and the measuring vessel 30, so that the detection medium can be input into the measuring vessel 30 by using the liquid guide device 20 after injection. The liquid level sensor is installed on the inner top of the splash-proof bucket 10, and the lower end of the liquid level sensor extends into the inner bottom of the measuring vessel 30. The liquid level sensor can be used to calibrate the liquid level height of the detection medium in the measuring vessel 30, so that the input volume can be further measured. The reading scale 50 is installed between the splash-proof bucket 10 and the measuring vessel 30, and is used to cooperate with the liquid guide device 20 and the float 40 in the liquid level sensor to facilitate the detection personnel to read and observe. The measuring instrument thermometer 60 and the filling port thermometer 70 can be used to detect the temperature of the detection medium in the measuring instrument 30 and the temperature of the detection medium input part of the liquid guiding device 20 respectively. The liquid discharge pipe 80 is connected to the lower end of the measuring instrument 30, and a liquid discharge control valve is installed on the liquid discharge pipe 80, so that the detection medium in the measuring instrument 30 can be emptied from the liquid discharge pipe 80 after calibration.
[0021] In this embodiment, a filling gun stabilizing device is also fixedly connected to the top of the splash-proof bucket 10. The filling gun stabilizing device can be formed with a recess that matches the shape of the filling gun, so that the filling gun can be placed in the recess and then injected, so that when the detection medium is input into the liquid filling port, there is no need to support the filling gun for a long time.
[0022] In this embodiment, the liquid guiding device 20 may include a metering neck 21, a liquid injection pipe 22, and an exhaust pipe 23. The upper end of the liquid injection pipe 22 extends into the splash-proof bucket 10, and the lower end of the liquid injection pipe 22 extends into the bottom of the measuring vessel 30. The inner cavity of the liquid injection pipe 22 is communicated with the liquid injection port of the splash-proof bucket 10 and the inner cavity of the measuring vessel 30, respectively, so that the liquid injection pipe 22 can be used to flow into the measuring vessel 30 when the detection medium is input. The upper ends of the metering neck 21 and the exhaust pipe 23 are both communicated with the bottom of the splash-proof bucket 10, and the lower ends of the metering neck 21 and the exhaust pipe 23 are both communicated with the top of the measuring vessel 30. The liquid level sensor passes through the metering neck 21, and the float 40 in the liquid level sensor can be moved in or out of the metering neck 21, so that the detection medium input into the measuring vessel 30 can push the float 40 to move upward after accumulation, and at the same time, the exhaust pipe 23 can be used to discharge the air in the measuring vessel. The effective cross-sectional areas of the liquid injection pipe 22 and the exhaust pipe 23 are equal, and the metering neck 21, the liquid injection pipe 22 and the exhaust pipe 23 can be distributed vertically or tilted at 120 degrees. The metering neck 21 can be provided with an observation window that matches the float 40 and the reading scale 50 in the liquid level sensor, or the metering neck 21 can be made of glass material as a whole, so that the measurement personnel can check the liquid level marked by the float 40 and the working status of the liquid level sensor with the reading scale 50.
[0023] In this embodiment, the measuring instrument 30 may include a barrel 31, an upper cone 32, a lower cone 33, a bracket 34, and a plurality of leveling structures 35. The upper end and the lower end of the barrel 31 are fixedly connected to the upper cone 32 and the lower cone 33, respectively, and the inner cavities of the barrel 31, the upper cone 32, and the lower cone 33 are connected. The barrel 31, the upper cone 32, and the lower cone 33 can all be made of stainless steel material to form a double-layer insulation structure, so as to reduce the influence of the external temperature environment on the detection medium during the calibration process. The top of the bracket 34 is fixedly connected to the lower cone 33, and a plurality of leveling structures 35 are installed and arranged below the bracket 34 with adjustable height, so that the barrel 31 can be kept vertical. The leveling structure 35 can be realized by using known technologies such as height adjustment using threads, which will not be repeated here.
[0024] In this embodiment, the liquid level sensor can adopt FH series digital output liquid level measurement sensor which is resistant to urea corrosion, has a resolution of 0.1mm, an accuracy of ±0.2mm, an explosion-proof grade of ExIICT6, and is applicable to urea and water, and has a working environment of -40-85°C. The reading scale 50 can adopt a vernier caliper, and the liquid level sensor can be corrected according to the data of the vernier reading scale when in use, so that it is consistent with the calibration state.
[0025] In this embodiment, the injection port thermometer 70 is installed on the upper cone 32, and the detection end of the injection port thermometer 70 extends into the inner cavity of the barrel 31; the measuring instrument thermometer 60 is installed on the injection tube 22, and the detection end of the measuring instrument thermometer 60 extends into the inner cavity of the injection tube 22. Both the measuring instrument thermometer 60 and the injection port thermometer 70 can use PT100 temperature sensors with an accuracy of ±0.1°C, and within the specified ambient temperature, the output change is less than 0.1% of the range for every 10°C change in temperature, the measuring range: -30-55°C, explosion-proof mark: ExiaIICT6, applicable medium: urea, water.
[0026] In this embodiment, the discharge pipe 80 is connected to the lower end of the lower cone 33, and a discharge control valve is installed on the discharge pipe 80. The discharge control valve may also be provided with an observation window to facilitate viewing of the discharge status.
[0027] The system of the present invention may also include a control system for performing data exchange and other operations with the above-mentioned sensor to perform automatic verification. It should be understood that the control system has no special limitations and can be implemented by control technologies in the prior art, which will not be described in detail here.
[0028] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.
Claims
1. A urea filling machine automatic calibration meter device, comprising a meter (30), characterized in that: The invention also comprises a splash-proof bucket (10), a liquid guiding device (20) and a liquid level sensor. The top of the splash-proof bucket (10) is formed with a liquid injection port. The upper and lower ends of the liquid guiding device (20) are respectively connected to the splash-proof bucket (10) and the measuring vessel (30). The liquid level sensor is installed on the inner top of the splash-proof bucket (10), and the lower end of the liquid level sensor extends into the inner bottom of the measuring vessel (30). The liquid guiding device (20) comprises a metering neck (21), a liquid injection pipe (22) and an exhaust pipe (23); the upper end of the liquid injection pipe (22) extends into the splash-proof bucket (10); the lower end of the liquid injection pipe (22) extends into the bottom of the measuring vessel (30); the inner cavity of the liquid injection pipe (22) is communicated with the liquid injection port of the splash-proof bucket (10) and the inner cavity of the measuring vessel (30) respectively; the upper ends of the metering neck (21) and the exhaust pipe (23) are both communicated with the bottom of the splash-proof bucket (10); the lower ends of the metering neck (21) and the exhaust pipe (23) are both communicated with the top of the measuring vessel (30); the liquid level sensor passes through the metering neck (21), and the float (40) in the liquid level sensor can be moved into or out of the metering neck (21).
2. The automatic calibration device for a urea filling machine according to claim 1, characterized in that: It also includes a reading scale (50), which is installed between the splash-proof bucket (10) and the measuring vessel (30). The measuring neck (21) is provided with an observation window that matches the float (40) in the liquid level sensor and the reading scale (50).
3. The automatic calibration device of a urea filling machine according to claim 1 or 2, characterized in that: The measuring instrument (30) comprises a barrel (31), an upper cone (32), a lower cone (33), a bracket (34) and a plurality of leveling structures (35); the upper end and the lower end of the barrel (31) are fixedly connected to the upper cone (32) and the lower cone (33) respectively, and the inner cavities of the barrel (31), the upper cone (32) and the lower cone (33) are communicated; the top of the bracket (34) is fixedly connected to the lower cone (33); and the plurality of leveling structures (35) are installed below the bracket (34) in an adjustable height.
4. The automatic calibration device for a urea filling machine according to claim 3, characterized in that: It also includes a measuring thermometer (60) and a liquid injection port thermometer (70), wherein the liquid injection port thermometer (70) is mounted on the upper cone (32), and a detection end of the liquid injection port thermometer (70) extends into the inner cavity of the barrel body (31), and the measuring thermometer (60) is mounted on the liquid injection tube (22), and a detection end of the measuring thermometer (60) extends into the inner cavity of the liquid injection tube (22).
5. The automatic calibration device for a urea filling machine according to claim 3, characterized in that: It also includes a liquid discharge pipe (80), which is connected to the lower end of the lower cone (33) and is provided with a liquid discharge control valve.
6. The automatic calibration device for a urea filling machine according to claim 1, characterized in that: The top of the splash-proof bucket (10) is also fixedly connected with a filling gun stabilizing device.