Electronic weighing system for nozzle unevenness measurement and nozzle unevenness measurement equipment

Abstract

The invention discloses an electronic weighing system for nozzle unevenness measurement and nozzle unevenness measurement equipment. The electronic weighing system comprises two groups of support assemblies, a funnel oil guide device and an oil receiving and weighing device. The funnel oil guiding device comprises a funnel oil guiding set, the funnel oil guiding set comprises a plurality of funnels which are sequentially arranged in the length direction of the funnel oil guiding set, and the funnels correspond to a plurality of fan-shaped plates in the nozzle unevenness measuring equipment one to one so as to be used for collecting lubricating oil separated by the corresponding fan-shaped plates and guiding the lubricating oil downwards. The oil receiving and weighing device comprises a plurality of groups of oil receiving and weighing units which are arranged in one-to-one correspondence with the plurality of funnels, each group of oil receiving and weighing units comprises an oil cup, a mounting component for mounting the oil cup and an electronic scale connected with the mounting component and used for weighing, and each group of oil receiving and weighing units is connected with the electronic scale through selection of the material of the oil cup and arrangement of the structure of the oil cup and the mounting component. And the weighing range of the electronic scale is not more than 200g. According to the system, the test time, especially the small flow measurement time, can be greatly shortened, and the measurement efficiency and precision are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of nozzle unevenness measurement, and in particular, to an electronic weighing system for nozzle unevenness measurement. In addition, the present invention also relates to a nozzle unevenness measurement device including the electronic weighing system for nozzle unevenness measurement. Background Art

[0002] After the aircraft engine nozzle is processed, the processing quality needs to be tested. Equipment is needed to measure the unevenness of its spray cone, that is, to measure the uniformity of the 12 sectors of the spray cone cross section. The existing measuring equipment includes a fan plate for dividing the spray cone cross section of the nozzle into 12 sectors, and a weighing system for receiving and weighing the 12 components of lubricating oil respectively derived from the 12 fan plates.

[0003] In the prior art, due to the large variety of nozzles and the complex and diverse test conditions, such measurement equipment is often dedicated equipment. Therefore, it is necessary to build multiple dedicated equipment to meet the test needs, which requires a lot of space and a large amount of capital investment.

[0004] The current measurement range of existing products is between 40 and 1600 ml / min. After being assigned to the 12 measuring cups of the weighing system, the measurement volume of each measuring cup is 3.3 to 133 ml / min. When measuring small flow nozzles, due to the heavy weight of the existing cups and the pouring oil control valve, the weight of a single group reaches more than 2 kg, so the electronic scale used for weighing is usually 6 kg or 10 kg. When using a large-scale electronic scale to weigh small flow lubricating oil, in order to eliminate the weighing error and achieve the requirement of 0.5% measurement accuracy, it is mainly to increase the oil collection capacity to cover the measurement of small flow, that is, to extend the oil receiving time of the measuring cup to increase the oil receiving weight, thereby greatly extending the measurement time, resulting in very low measurement efficiency and low accuracy when measuring small flow. Summary of the invention

[0005] The present invention provides an electronic weighing system and nozzle unevenness measuring equipment for measuring nozzle unevenness, so as to solve the technical problems of long measuring time, low measuring efficiency and low measuring accuracy when measuring small flow nozzles existing in the existing weighing system.

[0006] The technical solution adopted by the present invention is as follows:

[0007] An electronic weighing system for measuring nozzle unevenness comprises: two groups of support assemblies arranged at a relative interval, and a funnel oil guide device and an oil receiving weighing device connected between the two groups of support assemblies, and the oil receiving weighing device is located below the funnel oil guide device; the funnel oil guide device comprises a funnel oil guide group arranged transversely between the two groups of support assemblies, the funnel oil guide group comprises a plurality of funnels arranged in sequence along its length direction, the plurality of funnels are arranged one by one corresponding to a plurality of fan-shaped plates in a nozzle unevenness measuring device, so as to collect the lubricating oil separated by the corresponding fan-shaped plates and guide it downward; the oil receiving weighing device comprises a plurality of groups of oil receiving weighing units arranged one by one corresponding to the plurality of funnels, each group of oil receiving weighing units comprises an oil cup for holding the lubricating oil guided by the corresponding funnel arranged above, a mounting component for mounting the oil cup, and an electronic scale connected to the mounting component for weighing, and the weighing range of the electronic scale is not greater than 200g through the selection of the material of the oil cup and the arrangement of the structure of the oil cup and the mounting component in each group of oil receiving weighing units.

[0008] Furthermore, the oil cup is made of aluminum or plastic material, the weight of the oil cup is no more than 50g, and the capacity of the oil cup is 20-40ml.

[0009] Furthermore, the mounting component includes a connecting plate, two mounting plates, two groups of bearings and two mounting pins; one side of the connecting plate is fixed to the corresponding electronic scale, and the other side of the connecting plate is concave to form a mounting opening; the two mounting plates are respectively fixed on both sides of the mounting opening, and the two groups of bearings are separately installed in the two mounting plates; the two sides of the oil cup are each installed in the bearing on the corresponding side through a fixedly connected mounting pin and rotatably mounted on the connecting plate.

[0010] Furthermore, the oil receiving and weighing device also includes an oil pouring driving mechanism, which is simultaneously connected to the oil cups of multiple groups of oil receiving and weighing units arranged laterally, so as to drive the multiple groups of oil cups to pour the oil simultaneously.

[0011] Furthermore, the oil cup includes an oil receiving cup for receiving oil, and a lever connected to the bottom of the oil receiving cup; the oil pouring drive mechanism includes a pull plate extending laterally, a first slider fixed at both ends of the pull plate, two first slide rails respectively matched with the two first sliders and fixed on two groups of support assemblies on both sides, and two groups of first telescopic cylinders respectively fixed to the two sliders; a plurality of through holes penetrating the plate surface are provided on the pull plate corresponding to the plurality of oil cups, and the lever of the oil cup is penetrated through the corresponding through holes to drive the pull plate to slide longitudinally during the extension and retraction of the first telescopic cylinder, and then the plurality of oil cups are simultaneously pulled to tilt at an angle through the pull plate to pour the oil.

[0012] Furthermore, the oil receiving and weighing device also includes an oil receiving trough for receiving the poured lubricating oil. The oil receiving trough is located on the oil pouring side of the oil cup and extends laterally with two ends respectively connected to two groups of support assemblies.

[0013] Furthermore, the oil receiving weighing device also includes a support plate that serves as an installation support. After the support plate is extended laterally, its two ends are detachably connected to two groups of support assemblies on both sides; multiple groups of oil receiving weighing units are evenly spaced along the length direction of the support plate, and one end of the electronic scale of each oil receiving weighing unit is detachably fixed to the support plate, and the other cantilever end of the electronic scale is detachably connected to the installation component.

[0014] Furthermore, there are multiple groups of oil receiving and weighing devices, which are arranged in sequence along a longitudinal direction perpendicular to the transverse direction; the funnel oil guiding device also includes a funnel driving mechanism connected to the funnel oil guiding group, so as to drive the funnel oil guiding group to slide along the longitudinal direction so as to guide oil to the multiple groups of oil receiving and weighing devices respectively after receiving oil.

[0015] Furthermore, the funnel oil guide group also includes a transversely arranged mounting cross plate, and a plurality of mounting holes penetrating the plate surface are evenly spaced in the length direction of the mounting cross plate, and a plurality of funnels are detachably installed in the plurality of mounting holes in sequence, or the mounting cross plate is evenly spaced in the length direction to form funnels; the funnel driving mechanism includes two second sliding blocks and two groups of door frames fixed at both ends of the mounting cross plate, two second slide rails on two groups of support assemblies respectively matched with the two second sliding blocks and fixed on both sides, and two groups of second telescopic cylinders respectively connected to the two groups of door frames; the two groups of door frames are respectively fixed to the two second sliding blocks, and the second telescopic cylinder is a bidirectional driving cylinder, and the two ends of the bidirectional driving cylinder are respectively fixed to the two sides of the corresponding door frames.

[0016] According to another aspect of the present invention, there is also provided a nozzle unevenness measuring device, comprising an electronic weighing system for measuring nozzle unevenness as described above.

[0017] The present invention has the following beneficial effects:

[0018] In the electronic weighing system of the present invention, the weighing range of the electronic scale can be no more than 200g by selecting the material of the oil cup and the structural setting of the oil cup and the mounting member, so that the weight of the oil cup can be no more than 50g. Compared with the conventional large-capacity measuring cup, the weight of the oil cup of the present invention can be designed to be no more than 50g, which is less than 1 / 20 of the existing large-capacity measuring cup. The existing electronic scale uses an electronic scale with an explosion-proof electromagnetic valve to discharge oil, and the weight of this type of electronic scale is no less than 2kg. Therefore, the electronic scale usually uses a 6kg range, so even for an electronic scale with an accuracy of 0.01%, the existing 6kg range is 0.01%. The electronic scale with kg range also has a measurement error of 0.6g. When the measurement accuracy must be within 0.5%, the measuring cup needs to receive at least 120g to eliminate the 0.6g error. For the flow rate as small as 3.3ml / min (2.57g / min), combined with the unevenness of the nozzle itself, the 12 measuring cups (currently 12 fan-shaped plates are used, so 12 measuring cups are required, or other numbers of fan-shaped plates can be used, in which case the number of measuring cups only needs to correspond to the number of fan-shaped plates) collect inconsistent amounts of oil. In order to ensure that each The measuring cup can eliminate the measurement error of 0.6g, so it takes at least 50 minutes to ensure that the measurement accuracy of each measuring cup meets the requirements; in the present invention, when the weighing range of the electronic scale is not more than 200g and the weight of the oil cup does not exceed 50g, when the accuracy of the electronic scale is 0.01% and the required measurement accuracy is 0.5%, the oil cup only needs to receive an additional 0.4g of lubricating oil. For the oil receiving amount of 3.3ml / min, the measurement error can be eliminated in more than ten seconds, and the entire oil receiving time of the oil cup does not exceed 1.5 minutes. Therefore, the electronic weighing system of the present invention reduces the time required for measuring oil. The weight of the oil cup is increased, so that the ratio of the oil weight to the oil cup weight is greatly improved, so that for small flow nozzles, it is no longer necessary to extend the oil connection time to increase the oil connection weight of the oil cup, thereby eliminating the inherent error of the electronic scale, and thus the test time can be greatly shortened, especially the small flow measurement time, thereby improving the measurement efficiency, and the range of the electronic scale is not more than 200g, so the accuracy of small flow measurement can also be effectively improved, which is particularly suitable for the measurement of small flow nozzles; on the other hand, when the electronic weighing system of the present invention is used for weighing and metering, the entire weighing process can be directly observed, so it is easy to repair and maintain;

[0019] The nozzle unevenness measuring device of the present invention no longer needs to extend the oil receiving time to increase the oil receiving weight of the oil cup for small flow nozzles, thereby eliminating the inherent error of the electronic scale. Therefore, the test time can be greatly shortened, especially the small flow measurement time, thereby improving the measurement efficiency. The measuring range of the electronic scale is not greater than 200g, which can also effectively improve the accuracy of small flow measurement, and is particularly suitable for the measurement of small flow nozzles. On the other hand, when the nozzle unevenness measuring device of the present invention is used for weighing and metering, the entire weighing process can be directly observed, which is easy to inspect and maintain.

[0020] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 2 is a schematic diagram of the main structure of an electronic weighing system for measuring nozzle unevenness according to a preferred embodiment of the present invention;

[0023] Figure 2 yes Figure 1 A schematic diagram of a top view structure;

[0024] Figure 3 yes Figure 1 AA-direction cross-sectional structural diagram;

[0025] Figure 4 yes Figure 1 The main structural diagram of the middle oil connection weighing device;

[0026] Figure 5 yes Figure 4 A schematic diagram of a top view structure;

[0027] Figure 6 yes Figure 4 Schematic diagram of the left view structure;

[0028] Figure 7 yes Figure 4 A top view of some structures in the middle oil weighing unit;

[0029] Figure 8 yes Figure 4 Left view of part of the structure of the middle oil weighing unit.

[0030] Legend:

[0031] 1. Support assembly; 2. Funnel oil guide group; 21. Funnel; 22. Mounting cross plate; 3. Funnel drive mechanism; 32. Door frame; 4. Oil receiving weighing unit; 41. Oil cup; 411. Oil receiving cup; 412. Push rod; 42. Mounting component; 421. Connecting plate; 422. Mounting plate; 424. Mounting pin; 43. Electronic scale; 5. Oil pouring drive mechanism; 51. Pull plate; 6. Oil receiving trough; 7. Support plate. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0033] Reference Figure 1-3 The preferred embodiment of the present invention provides an electronic weighing system for measuring nozzle unevenness, comprising: two sets of support assemblies 1 arranged at a relative interval, and a funnel oil guide device and an oil receiving weighing device connected between the two sets of support assemblies 1, and the oil receiving weighing device is located below the funnel oil guide device. The funnel oil guide device includes a funnel oil guide group 2 arranged horizontally between the two sets of support assemblies 1, and the funnel oil guide group 2 includes a plurality of funnels 21 arranged in sequence along its length direction. The plurality of funnels 21 are arranged one by one corresponding to the plurality of fan-shaped plates in the nozzle unevenness measuring device, so as to collect the lubricating oil separated by the corresponding fan-shaped plates and guide it downward. The oil receiving weighing device includes a plurality of groups of oil receiving weighing units 4 which are arranged one by one corresponding to a plurality of funnels 21. Each group of oil receiving weighing units 4 includes an oil cup 41 for holding the lubricating oil discharged from the corresponding funnel 21 above, a mounting component 42 for mounting the oil cup 41, and an electronic scale 43 connected to the mounting component 42 for weighing. In each group of oil receiving weighing units 4, the material of the oil cup 41 and the structure of the oil cup 41 and the mounting component 42 are selected so that the weighing range of the electronic scale 43 is not greater than 200g.

[0034] When the electronic weighing system of the present invention is used for testing, the funnel oil guide device is located below the fan-shaped plate of the nozzle unevenness measuring equipment, and the oil receiving weighing device is located below the funnel oil guide device. After the funnel oil guide group 2 receives the lubricating oil for a preset time (the oil receiving time is set accordingly according to the oil injection amount of the nozzle), it moves out from above the oil receiving weighing device to prevent the lubricating oil from continuing to enter the oil cups 41 of the multiple groups of oil receiving weighing units 4 correspondingly arranged below through the oil collecting and guiding effect of the funnel 21 in the funnel oil guide group 2; then the electronic scale 43 of each group of oil receiving weighing units 4 separately measures the weight of the oil in the oil cup 41 connected by the mounting component 42, and obtains the corresponding flow value through weight / time, thereby obtaining the unevenness value of the nozzle under this working condition by measuring the weight of the oil in each oil cup 41.

[0035] In the electronic weighing system of the present invention, the weighing range of the electronic scale 43 can be no more than 200g by selecting the material of the oil cup 41 and the structural arrangement of the oil cup 41 and the mounting member 42, so that the weight of the oil cup 41 can be no more than 50g. Compared with the conventional large-capacity measuring cup, the weight of the oil cup 41 of the present invention can be designed to be no more than 50g, which is less than 1 / 20 of the existing large-capacity measuring cup. The existing electronic scale uses an electronic scale with an explosion-proof electromagnetic valve to discharge oil, and the weight of this type of electronic scale is no less than 2kg. Therefore, the electronic scale usually uses a 6kg range, so even for an electronic scale with an accuracy of 0.01%, , the existing 6kg range electronic scale also has a measurement error of 0.6g. When the measurement accuracy must be within 0.5%, the measuring cup needs to receive at least 120g to eliminate the 0.6g error. For the flow rate as small as 3.3ml / min (2.57g / min), combined with the unevenness of the nozzle itself, the 12 measuring cups (currently using 12 fan-shaped plates, so 12 measuring cups are required, or other numbers of fan-shaped plates can be used, in which case the number of measuring cups only needs to correspond to the number of fan-shaped plates) collect inconsistent amounts of oil. In order to ensure that each measuring cup can In order to eliminate the measurement error of 0.6g, it is necessary to receive the oil for at least 50 minutes to ensure that the measurement accuracy of each measuring cup meets the requirements; in the present invention, when the weighing range of the electronic scale 43 is not more than 200g and the weight of the oil cup 41 does not exceed 50g, when the accuracy of the electronic scale 43 is 0.01% and the required measurement accuracy is 0.5%, the oil cup 41 only needs to receive an additional 0.4g of lubricating oil. For an oil receiving amount of 3.3ml / min, the measurement error can be eliminated in just over ten seconds, and the entire oil receiving time of the oil cup 41 does not exceed 1.5 minutes. Therefore, the electronic weighing system of the present invention reduces the oil The weight of the cup 41 greatly increases the ratio of the weight of the oil to the weight of the oil cup 41, so that for small flow nozzles, it is no longer necessary to extend the oil connection time to increase the oil connection weight of the oil cup 41, thereby eliminating the inherent error of the electronic scale 43, and thus can greatly shorten the test time, especially the small flow measurement time, thereby improving the measurement efficiency, and the range of the electronic scale 43 is not greater than 200g, thereby also effectively improving the accuracy of small flow measurement, which is particularly suitable for the measurement of small flow nozzles; on the other hand, when the electronic weighing system of the present invention is used for weighing and metering, the entire weighing process can be directly observed, thereby facilitating inspection and maintenance.

[0036] Alternatively, if Figure 4-5As shown, the oil cup 41 is made of aluminum or plastic material, and the weight of the oil cup 41 is not more than 50g. The capacity of the oil cup 41 is 20-40ml. When a 200g range electronic scale with an accuracy of 0.01% is used, at a large flow rate such as 133ml / min, the oil cup 41 can be connected to the oil within about 10 seconds. For a small flow rate of 3.3ml / min, the oil connection time can be controlled within 1 minute, thereby greatly shortening the oil connection time and further improving the measurement efficiency and the accuracy of small flow measurement.

[0037] Alternatively, if Figure 6-8 As shown, the mounting member 42 includes a connecting plate 421, two mounting plates 422, two groups of bearings and two mounting pins 424. One side of the connecting plate 421 is fixed to the corresponding electronic scale 43, and the other side of the connecting plate 421 is concave to form a mounting opening. The two mounting plates 422 are respectively fixed on both sides of the mounting opening, and the two groups of bearings are separately installed in the two mounting plates 422. The two sides of the oil cup 41 are respectively installed in the bearings on the corresponding side through a fixedly connected mounting pin 424 and rotatably mounted on the connecting plate 421. In this optional scheme, through the structural setting of the mounting member 42, on the one hand, the oil cup 41 can be rotatably mounted on the mounting member 42, so that the oil can be dumped and drained after the subsequent measurement is completed, and on the other hand, the overall structure of the mounting member 42 is simple and easy to process and prepare, and the total weight of the mounting member 42 and the oil cup 41 is reduced as much as possible, so that the electronic scale 43 can select an electronic scale with a range of no more than 200g.

[0038] Alternatively, if Figure 3 As shown, the oil receiving and weighing device further comprises an oil pouring driving mechanism 5, which is simultaneously connected to the oil cups 41 of multiple groups of oil receiving and weighing units 4 arranged laterally, so as to drive the multiple groups of oil cups 41 to pour the oil simultaneously.

[0039] In this option, if Figure 7-8 As shown, the oil cup 41 includes an oil receiving cup 411 for receiving oil, and a lever 412 connected to the bottom of the oil receiving cup 411. Figure 3As shown, the oil pouring driving mechanism 5 comprises a pull plate 51 extending in the transverse direction, first sliders fixed at both ends of the pull plate 51, two first slide rails respectively matched with the two first sliders and fixed on two sets of support assemblies 1 on both sides, and two sets of first telescopic cylinders respectively fixed to the two sliders. The pull plate 51 is provided with a plurality of through holes arranged through the plate surface corresponding to the plurality of oil cups 41, and the lever 412 of the oil cup 41 is inserted into the corresponding through holes to drive the pull plate 51 to slide longitudinally during the extension and retraction process of the first telescopic cylinder, and then the pull plate 51 simultaneously pulls the plurality of oil cups 41 to tilt the angle to pour the oil. After the metering is completed, the two first telescopic cylinders are started simultaneously, driving the connected first sliders to slide longitudinally on the corresponding first slide rails, thereby pulling the pull plate 51 to slide longitudinally through the two first sliders at the same time. After the pull plate 51 slides, it pulls the lever 412 at the bottom of the oil cup 41 to rotate and tilt the oil cup 41 at a certain angle to pour out the measured oil. After pouring, the two first telescopic cylinders are started back to their original positions synchronously, and the lever 412 is vertically opened to make the oil cup 41 face upwards, so as to prepare for the next oil collection.

[0040] Compared with the prior art, a solenoid valve is set at the bottom of each measuring cup, and the oil is poured by controlling the on and off of the solenoid valve. Since each measuring cup is controlled by a solenoid valve to pour the oil, the consistency of pouring the oil from all measuring cups is poor, and the setting of multiple solenoid valves also leads to high measurement costs. On the other hand, the weight of the solenoid valve is not less than 2kg, which is heavy, so the electronic scale must at least select a range of 6kg, which is not suitable for the measurement of small flow nozzles, resulting in low measurement accuracy, long measurement time, and low efficiency. The failure rate of the solenoid valve is high after use, which easily leads to leakage and oil release of the measuring cup, thereby affecting the measurement accuracy of the nozzle. In the scheme of the present invention, through the setting of the oil pouring drive mechanism 5, a row of oil cups 41 arranged in a straight line can be poured and drained at the same time, the action consistency of the oil cups 41 is good, and the entire structure is simple and the preparation cost is low. It can also effectively reduce the weight of each group of oil receiving weighing units, so that the electronic scale 43 can select a range of no more than 200g, which is suitable for the measurement of small flow nozzles.

[0041] Alternatively, if Figure 4 and Figure 6 As shown, the oil receiving and weighing device also includes an oil receiving groove 6 for receiving the poured lubricating oil. The oil receiving groove 6 is located on the oil pouring side of the oil cup 41, and is extended laterally and connected to two groups of support assemblies 1 at both ends respectively. The oil receiving groove 6 is used to receive and collect the lubricating oil poured from a row of oil cups 41, and to guide the lubricating oil outward.

[0042] Alternatively, if Figure 5As shown, the oil receiving weighing device also includes a support plate 7 that serves as a mounting support. After the support plate 7 is extended laterally, its two ends are detachably connected to the two groups of support assemblies 1 on both sides. Multiple groups of oil receiving weighing units 4 are evenly spaced along the length direction of the support plate 7, and one end of the electronic scale 43 of each oil receiving weighing unit 4 is detachably fixed to the support plate 7, and the other cantilever end of the electronic scale 43 is detachably connected to the mounting member 42. In this optional solution, through the setting of the support plate 7, a row of multiple groups of oil receiving weighing units 4 are fixed at the same time to form a modular structure. When it is necessary to test nozzles with different flow rates, the modular structure can be disassembled and replaced to adapt, thereby facilitating replacement, reducing equipment manufacturing costs, and facilitating future product upgrades.

[0043] Preferably, if Figure 2 As shown, there are multiple groups of oil receiving and weighing devices, and the multiple groups of oil receiving and weighing devices are arranged in sequence along the longitudinal direction perpendicular to the transverse direction. The funnel oil guiding device also includes a funnel driving mechanism 3 connected to the funnel oil guiding group 2, which is used to drive the funnel oil guiding group 2 to slide along the longitudinal direction to guide the multiple groups of oil receiving and weighing devices after receiving the oil. In actual design, each group of oil receiving and weighing devices is adapted to a different flow range, and the simultaneous setting of multiple groups of oil receiving and weighing devices can meet the measurement of all products with a flow rate of 40 to 1600 ml / min, thereby eliminating the need to set up multiple special test equipment, which can effectively reduce the equipment preparation cost and reduce the investment in the site.

[0044] Alternatively, if Figure 1 and Figure 3 As shown, the funnel oil guide group 2 also includes a transversely arranged mounting cross plate 22, and a plurality of mounting holes penetrating the plate surface are evenly spaced in the length direction of the mounting cross plate 22, and a plurality of funnels 21 are sequentially detachably installed in the plurality of mounting holes, so as to facilitate the replacement of funnels 21 of different capacities to meet the measurement requirements of nozzles of different flow rates; or the funnels 21 are formed by evenly spaced processing in the length direction of the mounting cross plate. The funnel driving mechanism 3 includes two second sliders and two groups of door frames 32 fixed at both ends of the mounting cross plate, two second slide rails on two groups of support assemblies 1 respectively matched with the two second sliders and fixed on both sides, and two groups of second telescopic cylinders respectively connected to the two groups of door frames 32. The two groups of door frames 32 are respectively fixed to the two second sliders, and the second telescopic cylinder is a bidirectional drive cylinder, and the two ends of the bidirectional drive cylinder are respectively fixed to the two sides of the corresponding door frames 32. During operation, the two second telescopic cylinders are started simultaneously to extend the same ends of the two cylinders, thereby driving the two connected door frames 32 to move the corresponding second sliders to slide longitudinally on the corresponding second slide rails, thereby simultaneously pulling the mounting cross plate 22 to slide longitudinally through the two second sliders to correspond to the oil receiving weighing devices at different positions below.

[0045] The present invention also relates to a nozzle unevenness measuring device, including an electronic weighing system for measuring nozzle unevenness as described above. Therefore, the nozzle unevenness measuring device of the present invention no longer needs to extend the oil receiving time to increase the oil receiving weight of the oil cup for small flow nozzles, thereby eliminating the inherent error of the electronic scale. Therefore, the test time can be greatly shortened, especially the small flow measurement time, thereby improving the measurement efficiency. The measuring range of the electronic scale is not greater than 200g, thereby effectively improving the accuracy of small flow measurement, and is particularly suitable for the measurement of small flow nozzles. On the other hand, when the nozzle unevenness measuring device of the present invention is used for weighing and metering, the entire weighing process can be directly observed, thereby facilitating inspection and maintenance.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electronic weighing system for measuring nozzle unevenness, characterized in that: include: Two sets of support assemblies (1) arranged at a relative interval, and a funnel oil guide device and an oil receiving weighing device connected between the two sets of support assemblies (1), wherein the oil receiving weighing device is located below the funnel oil guide device; The funnel oil guide device comprises a funnel oil guide group (2) arranged transversely between two groups of support assemblies (1), the funnel oil guide group (2) comprising a plurality of funnels (21) arranged in sequence along its length direction, the plurality of funnels (21) being arranged one by one corresponding to a plurality of fan-shaped plates in the nozzle unevenness measuring device, so as to collect the lubricating oil separated by the corresponding fan-shaped plates and guide it downward; The oil receiving weighing device comprises a plurality of groups of oil receiving weighing units (4) arranged one by one corresponding to a plurality of funnels (21), each group of oil receiving weighing units (4) comprises an oil cup (41) for receiving lubricating oil discharged from a correspondingly arranged funnel (21) above, a mounting component (42) for mounting the oil cup (41), and an electronic scale (43) connected to the mounting component (42) for weighing. In each group of oil receiving weighing units (4), the weighing range of the electronic scale (43) is not greater than 200 g by selecting the material of the oil cup (41) and arranging the structure of the oil cup (41) and the mounting component (42).

2. The electronic weighing system for measuring nozzle unevenness according to claim 1, characterized in that: The oil cup (41) is made of aluminum or plastic material, and the weight of the oil cup (41) is no more than 50g, and the capacity of the oil cup (41) is 20-40ml.

3. The electronic weighing system for measuring nozzle unevenness according to claim 1, characterized in that: The mounting member (42) comprises a connecting plate (421), two mounting plates (422), two sets of bearings and two mounting pins (424); One side of the connecting plate (421) is fixed to the corresponding electronic scale (43), and the other side of the connecting plate (421) is concave to form a mounting opening; Two mounting plates (422) are respectively fixed on both sides of the mounting opening, and two sets of bearings are separately installed in the two mounting plates (422); The two sides of the oil cup (41) are each fixedly connected and installed in the bearings on the corresponding sides through a mounting pin (424) so ​​as to be rotatably installed on the connecting plate (421).

4. The electronic weighing system for measuring nozzle unevenness according to claim 3, characterized in that: The oil receiving and weighing device also includes an oil pouring driving mechanism (5), which is simultaneously connected to multiple groups of oil cups (41) of the oil receiving and weighing units (4) arranged transversely, so as to drive the multiple groups of oil cups (41) to pour the oil simultaneously.

5. The electronic weighing system for measuring nozzle unevenness according to claim 4, characterized in that: The oil cup (41) comprises an oil receiving cup (411) for receiving oil, and a lever (412) connected to the bottom of the oil receiving cup (411); The oil pouring driving mechanism (5) comprises a pull plate (51) extending in the transverse direction, first slide blocks fixed to both ends of the pull plate (51), two first slide rails respectively matched with the two first slide blocks and fixed to two sets of support assemblies (1) on both sides, and two sets of first telescopic cylinders respectively fixed to the two slide blocks; A plurality of through holes are provided on the pull plate (51) corresponding to the plurality of oil cups (41) and penetrating the plate surface. The lever (412) of the oil cup (41) is inserted into the corresponding through hole to drive the pull plate (51) to slide longitudinally during the extension and retraction process of the first telescopic cylinder, thereby simultaneously pulling the plurality of oil cups (41) to tilt at different angles to pour oil.

6. The electronic weighing system for measuring nozzle unevenness according to claim 5, characterized in that: The oil receiving and weighing device also includes an oil receiving groove (6) for receiving the poured lubricating oil. The oil receiving groove (6) is located on the oil pouring side of the oil cup (41) and extends laterally with two ends respectively connected to the two sets of support assemblies (1).

7. The electronic weighing system for measuring nozzle unevenness according to claim 1, characterized in that: The oil receiving weighing device also includes a support plate (7) for installation support. After the support plate (7) is extended laterally, two ends of the support plate (7) are respectively detachably connected to two sets of support assemblies (1) on both sides. A plurality of groups of oil receiving weighing units (4) are evenly spaced along the length direction of the support plate (7), and one end of the electronic scale (43) of each oil receiving weighing unit (4) is detachably fixed to the support plate (7), and the other cantilever end of the electronic scale (43) is detachably connected to the mounting component (42).

8. The electronic weighing system for measuring nozzle unevenness according to claim 1, characterized in that: The number of the oil receiving weighing devices is multiple groups, and the multiple groups of oil receiving weighing devices are arranged in sequence along a longitudinal direction perpendicular to the transverse direction; The funnel oil guiding device also includes a funnel driving mechanism (3) connected to the funnel oil guiding group (2) for driving the funnel oil guiding group (2) to slide longitudinally so as to guide oil to the multiple groups of oil receiving and weighing devices after receiving oil.

9. The electronic weighing system for measuring nozzle unevenness according to claim 8, characterized in that: The funnel oil guide group (2) also includes a transversely arranged mounting horizontal plate (22), a plurality of mounting holes penetrating the plate surface being evenly spaced in the length direction of the mounting horizontal plate, a plurality of funnels (21) being detachably mounted in the plurality of mounting holes in sequence, or the funnels (21) are formed by evenly spaced machining in the length direction of the mounting horizontal plate; The funnel driving mechanism (3) comprises two second sliding blocks fixed to the two ends of the mounting cross plate and two groups of door frames (32), two second slide rails respectively matched with the two second sliding blocks and fixed to two groups of support assemblies (1) on both sides, and two groups of second telescopic cylinders respectively connected to the two groups of door frames (32); The two groups of portal frames (32) are respectively fixed to the two second sliding blocks, and the second telescopic cylinder is a bidirectional drive cylinder, and the two ends of the bidirectional drive cylinder are respectively fixed to the two sides of the corresponding portal frames (32).

10. A nozzle unevenness measuring device, characterized in that: It comprises an electronic weighing system for measuring nozzle unevenness as described in any one of claims 1 to 9.

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