CN112345019A - Automatic metering device for wine making - Google Patents
Automatic metering device for wine making Download PDFInfo
- Publication number
- CN112345019A CN112345019A CN202011141475.4A CN202011141475A CN112345019A CN 112345019 A CN112345019 A CN 112345019A CN 202011141475 A CN202011141475 A CN 202011141475A CN 112345019 A CN112345019 A CN 112345019A
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- valve
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- trigger
- hydraulic
- metering
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- 238000011514 vinification Methods 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 239000003921 oil Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- 239000010720 hydraulic oil Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 240000007594 Oryza sativa Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 240000006394 Sorghum bicolor Species 0.000 description 2
- 235000011684 Sorghum saccharatum Nutrition 0.000 description 2
- 241000209140 Triticum Species 0.000 description 2
- 235000021307 Triticum Nutrition 0.000 description 2
- 240000008042 Zea mays Species 0.000 description 2
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 2
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 2
- 235000005822 corn Nutrition 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013124 brewing process Methods 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010563 solid-state fermentation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F19/00—Calibrated capacity measures for fluids or fluent solid material, e.g. measuring cups
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses an automatic metering device for wine making, which belongs to the technical field of wine making equipment and comprises the following components: the device comprises a pipe body, a valve device, a flow transmission device, a hydraulic transmission device, a scale strip, a trigger device and a reset device. The invention effectively utilizes the rotation of the flow metering turbine blade, transmits the rotation to the hydraulic device through the gear pair, utilizes the hydraulic principle to push the scale strip, further leads the stop block clamped on the scale strip to push the trigger connecting rod to close the valve, achieves the effect of automatically closing the valve by adjustable metering due to the adjustable position of the stop block on the scale strip, and is simultaneously provided with the resetting device for the next metering. Compared with the method that a flowmeter, an electromagnetic valve and a controller are directly used, the method adopts a smart mechanical linkage structure to achieve the same metering and controlling effects, reduces the using degree of electronic devices, enables a metering device to be more suitable for a long-term humid and corrosive environment of a wine making plant, and also reduces the maintenance cost.
Description
Technical Field
The invention belongs to the technical field of wine making equipment, and particularly relates to an automatic metering device for making wine.
Background
Most of white spirit brewing is solid state fermentation, and the main product is ethanol. Through detection and analysis, the white spirit contains most of ethanol and water and also contains other fragrant materials accounting for about 2 percent of the total amount. Because the amount and the mutual proportion of the flavor materials in the nine types are different, the white spirit is different from alcohol, and different style characteristics are formed. The raw material proportioning step is particularly important in the white spirit brewing process, and the quality and the taste of the white spirit are directly influenced. The brewing raw materials are sorghum (36%), rice (22%), glutinous rice (18%), wheat (16%) and corn (8%), and the mass proportion of the sorghum, the rice, the glutinous rice, the wheat and the corn has strict requirements. When in material preparation, the materials are sequentially transported to a material handling place according to the principle of more than one material and less than one material, and the different grain proportions can not be prepared by mistake. At present, the material proportioning mode in most wine making factories is still a manual material weighing and shoveling mode, the labor amount of manpower is huge, errors are easy to occur, and the quality of wine products cannot be guaranteed. The automatic batching wine making and wine filling is a necessary trend of the modern industry. Most of the existing automatic wine making factories achieve the effect of automatic metering by adopting a mode of combining a flowmeter, an electromagnetic valve and a controller, but in the environment which is wet for a long time and corrosive in the wine making factories, electronic equipment is easy to break down, the wine making efficiency and the wine making quality are influenced, and the maintenance cost is greatly increased.
Disclosure of Invention
The invention aims to: provides an automatic metering device for wine making, which triggers a mechanical switch by utilizing mechanical metering to solve the existing problems.
In order to achieve the purpose, the invention adopts the technical scheme that:
an automatic metering device for wine making, comprising: the turbine blade hydraulic lifting device comprises a hydraulic lifting device, a stop valve is arranged on the hydraulic lifting device, the hydraulic lifting device can push the scale strip to move upwards, the trigger device is arranged above the scale strip and comprises a driven pull rod and a stop valve connecting rod, one end of the driven pull rod is buckled with the valve device, one end of the stop valve connecting rod is connected to the stop valve of the hydraulic lifting device, and the trigger device can be moved to release the buckling state of the driven pull rod and the valve device and open the stop valve, the resetting device comprises a moving pair, and the moving pair can enable the valve device to move downwards to enable the valve device to be buckled with the driven pull rod.
The hydraulic transmission device further comprises a toggle gear, a first lever and a first spring, one end of the first lever leans against the profile tooth surface of the toggle gear, the other end of the first lever is connected with an input end piston of the hydraulic jacking device, the toggle gear can drive the first lever to periodically swing when rotating to enable the input end piston of the hydraulic jacking device to periodically move up and down, and the first spring is arranged above a rod at one end of the toggle gear of the first lever.
The scale bar is arranged on a piston at the output end of the hydraulic jacking device, a stop block is clamped on the scale bar, and the upper top surface of the stop block is an inclined surface.
The trigger device further comprises a second lever, a trigger plate, a second spring and a floating ball lever, the second lever is arranged above the stop block of the scale strip, the inclined plane on the stop block can push the second lever to rotate when the stop block moves upwards, the other end of the second lever leans against the trigger plate, one end of the driven pull rod is connected with the trigger plate, the second spring is connected to the opposite surface of the connecting surface of the trigger plate and the driven pull rod, one end of a stop valve connecting rod is connected with the stop valve of the hydraulic jacking device at the other end of one side of the trigger plate, the stop valve connecting rod moves leftwards to open the stop valve of the hydraulic jacking device, the floating ball lever is arranged on an oil tank of the hydraulic jacking device, one end of the floating ball lever is arranged at one side of the stop valve, and the floating ball lever can rotate to push the stop valve.
The valve device includes: the valve comprises a valve body and a third spring, wherein a trigger buckle is arranged on the valve body, one end of a driven pull rod is buckled on the trigger buckle to enable the valve device to keep an opening state, the driven pull rod moves rightwards to release the buckling with the trigger buckle, and the third spring below the valve body enables the valve body to move upwards to enable the valve device to be closed when the buckling state is released.
The sliding pair comprises a valve connecting rod and a third lever, one end of the valve connecting rod is connected with the valve body, and the other end of the valve connecting rod is connected with the third lever.
The resetting means further comprises: the device comprises a cam, a motor and a sensor, wherein the sensor is arranged beside a station, the sensor transmits a signal to the motor, the motor drives the cam to rotate, one end of a third lever is arranged on the cam, and the cam can swing when rotating.
Due to the adoption of the technical scheme, the invention has the beneficial effects that: this automatic metering device for wine making has effectively utilized the rotation of flow measurement turbine blade, will rotate through the gear pair and transmit hydraulic means, recycles hydraulic pressure principle and promotes the scale strip, and then makes the dog of centre gripping on the scale strip promote the trigger connecting rod and close the valve, because the dog is adjustable in position on the scale strip, and then has played the effect that reachs adjustable measurement self-closing valve, is equipped with resetting means so that next measurement simultaneously. Compared with the method that a flowmeter, an electromagnetic valve and a controller are directly used, the method adopts a smart mechanical linkage structure to achieve the same metering control effect, reduces the use degree of electronic devices, enables a metering device to be more suitable for a long-term humid and corrosive environment of a wine making plant, and reduces the maintenance cost.
Drawings
FIG. 1 is a schematic view of the overall cross-sectional structure of the present invention.
Fig. 2 is a schematic diagram of a hydraulic transmission.
Reference numerals: 1-pipe body, 2-valve device, 3-flow transmission device, 4-hydraulic transmission device, 5-graduated scale bar, 6-trigger device, 7-reset device, 301-turbine blade, 302-gear pair, 401-toggle gear, 402-first lever, 403-first spring, 404-hydraulic jacking device, 4041-input end piston, 4042-output end piston, 4043-stop valve, 4044-oil tank, 501-stop block, 601-second lever, 602-trigger plate, 603-driven pull rod, 604-stop valve connecting rod, 605-second spring, 606-floating ball lever, 201-valve body, 202-third spring, 203-trigger button, 701-valve connecting rod, 702-third lever, 703-cam, 704-motor, 705-sensor
Detailed Description
Referring to fig. 1, an automatic metering device for wine making includes: the device comprises a pipe body 1, a valve device 2, a flow transmission device 3, a hydraulic transmission device 4, a scale bar 5, a trigger device 6 and a reset device 7.
The valve device 2 and the flow transmission device 3 are arranged in the pipe body 1, the flow transmission device 3 is provided with the turbine blade 301, the turbine blade 301 can be driven to rotate when materials in the pipe body 1 flow from top to bottom, the materials are ingredients for wine making or wine making liquid, and the valve device 2 is arranged above the flow transmission device 3 and is also provided with a flow guide block which is connected with the flow guide function together. The flow transmission device 3 is connected with the hydraulic transmission device 4 through a gear pair 302, and the transmission shaft of the turbine blade 301 transmits the rotation of the turbine blade 301 to the hydraulic transmission device 4 outside the pipe body 1 through bevel gear transmission.
As shown in fig. 2, the hydraulic transmission device 4 includes: toggle gear 401, first lever 402, first spring 403 and hydraulic jacking device 404. The rotation of the turbine blades 301 is transmitted to the toggle gear 401 by the direction change of the bevel gears, in the figure the direction of the transmission shaft of the flow transmission device 3 is not consistent with the input direction of the hydraulic transmission device 4, but the steering can still be completed by increasing the number of bevel gears in the gear pair 302. One end of the first lever 402 leans against the contour tooth surface of the gear, the other end of the first lever is connected with an input end piston 4041 of the hydraulic jacking device 404, the gear can drive the first lever 402 to swing periodically to enable the input end piston 4041 of the connected hydraulic jacking device 404 to move up and down periodically, the principle of the hydraulic jacking device 404 is similar to that of a jack, when the input end piston 4041 moves upwards, a check valve in a pipeline connected with an output end piston 4042 is closed, a check valve in a pipeline connected with an oil tank 4044 is opened to pump oil from the oil tank 4044 into the cylinder of the input end piston 4041, when the input end piston 4041 moves downwards and is compressed, the check valve in the pipeline connected with the oil tank 4044 is closed, the check valve in the pipeline connected with the output end piston 4042 is opened, and oil in the cylinder of the input end piston 4041 is pressed into the cylinder of the output end piston 4042. The input end piston 4041 is moved up and down periodically so that the output end piston 4042 can be moved up and up all the way.
The first spring 403 is above the rod of the first lever 402 at the end of the toggle gear 401 to enable the first lever 402 to move in conformity with the contour of the toggle gear 401.
The trigger device 6 includes a second lever 601, a trigger plate 602, a driven link 603, a stop valve connecting rod 604, a second spring 605, and a float lever 606, the second lever 601 is above the stopper 501 of the scale bar 5, and the upper top surface of the stopper 501 is an inclined surface, and when acting on an upper object, the upper object can move to an inclined side, so that the inclined surface on the stopper 501 can push the second lever 601 to rotate when the stopper 501 moves upward, the other end of the second lever 601 abuts against the trigger plate 602, the second lever 601 rotates to move the trigger plate 602 leftward, one end of the driven link 603 is connected to the trigger plate 602, and the other end is engaged with the valve device 2, so that the left movement of the trigger plate 602 can move the driven link 603 rightward to release the engaged state of the driven link 603 and the valve device 2.
One end of the stop valve connecting rod 604 is connected to the stop valve 4043 of the hydraulic lift-up device 404 at the left side of the trigger plate 602, and the position of the stop valve connecting rod 604 at the left side of the trigger plate 602 is just the position where the engagement of the follower link 603 with the valve device 2 is to be released when the trigger plate 602 moves rightward, that is, the position can trigger both mechanisms at the same time. The movement of the stop valve connecting rod 604 to the left opens the stop valve 4043 of the hydraulic jacking device 404 because the hydraulic jacking device 404 must open the stop valve 4043 after the jacking is completed to unload the oil and return the oil in the cylinder of the output end piston 4042 to the oil tank 4044, thereby returning to its original position. The stop valve connecting rod 604 is moved leftwards integrally, and in order to keep the moving stability of the stop valve connecting rod, a guide rail is arranged around the connecting rod. The stop valve 4043 of the hydraulic jacking device 404 is opened and the oil unloading is completed and then the next hydraulic jacking operation is performed by automatic closing, the function of automatically closing the stop valve 4043 after the completion of the oil return can be achieved by arranging a floating ball and a lever on the oil surface which rises in the oil tank 4044, the floating ball lever 606 is arranged on the oil tank 4044 of the hydraulic jacking device 404, one end of the floating ball lever 606 is arranged on one side of the stop valve 4043, and the floating ball lever 606 can rotate after the hydraulic oil rises to push the stop valve 4043 of the hydraulic jacking device 404 to close.
A second spring 605 is connected to the opposite surface of the connection surface between the trigger plate 602 and the follower link 603, and the second spring 605 acts to return the trigger plate 602.
The valve device 2 includes: the valve device comprises a valve body 201 and a third spring 202, wherein a trigger buckle 203 is arranged below the valve body 201, one end of a driven pull rod 603 is buckled on the trigger buckle 203 to enable the valve device 2 to keep an opening state, the driven pull rod 603 moves towards the right to release the buckling with the trigger buckle 203, and the third spring 202 in a state that the valve body 201 is compressed downwards when the buckling is released enables the valve body 201 to move upwards to block a closed channel, so that the valve device 2 is closed. Here, it is noted that the mounting plate for mounting the third spring 202 is hollow, and the trigger button 203 can pass through the mounting plate for mounting the third spring 202 and the third spring 202.
The reset device 7 includes a moving pair, which makes the valve device 2 move downward, and makes the trigger button 203 under the valve body 201 lock with the driven pull rod 603. The moving pair comprises a valve connecting rod 701 and a third lever 702, wherein one end of the valve connecting rod 701 is connected with a valve, and the other end of the valve connecting rod 701 is connected with the third lever 702. The third lever 702 is driven to rotate downwards to reset the valve body 201 into the locked state.
A preferred embodiment is provided for driving the third lever 702 to rotate: the resetting device 7 further comprises: the device comprises a cam 703, a motor 704 and a sensor 705, wherein the sensor 705 is arranged beside a station and used for detecting whether a loading device arrives at the station or not, if the loading device arrives at the lower part of the pipe body 1, the sensor 705 transmits a signal to the motor 704, the motor 704 drives the cam 703 to rotate to start a round of metering and loading, one end of a third lever 702 is arranged on the cam 703, and the cam 703 can enable the third lever 702 to swing when rotating.
The invention is designed in principle, wherein the hinging positions of the support platform of the spring and the lever are not specifically described in text and can be obviously seen in the figures. For ease of understanding, none of the parts depicted in the drawings depict corresponding mounting brackets and mounting housings, and are not absent.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An automatic metering device for wine making, comprising: the device comprises a pipe body (1), a valve device (2), a flow transmission device (3), a hydraulic transmission device (4), a scale bar (5), a trigger device (6) and a reset device (7), and is characterized in that the valve device (2) and the flow transmission device (3) are arranged in the pipe body (1), the flow transmission device (3) is provided with a turbine blade (301), the turbine blade (301) can be driven to rotate when materials in the pipe body (1) flow, the flow transmission device (3) is connected with the hydraulic transmission device (4) through a gear pair (302), the hydraulic transmission device (4) comprises a hydraulic jacking device (404), the hydraulic jacking device (404) is provided with a stop valve (4043), the hydraulic jacking device (404) can push the scale bar (5) to move upwards, and the trigger device (6) is arranged above the scale bar (5), trigger device (6) are including driven pull rod (603) and stop valve connecting rod (604), driven pull rod (603) one end and valve device (2) lock, stop valve connecting rod (604) one end is connected to on stop valve (4043) of hydraulic pressure jacking device (404), removes trigger device (6) can be relieved driven pull rod (603) and valve device (2) the lock state and open stop valve (4043), resetting means (7) are including the sliding pair, and the sliding pair can make valve device (2) lapse make valve device (2) and driven pull rod (603) lock.
2. An automatic wine-making metering device according to claim 1, wherein the hydraulic transmission device (4) further comprises a toggle gear (401), a first lever (402) and a first spring (403), one end of the first lever (402) is leant against the profile tooth surface of the toggle gear (401), the other end of the first lever is connected with an input end piston (4041) of the hydraulic jacking device (404), the toggle gear (401) can drive the first lever (402) to periodically swing to enable the input end piston (4041) of the hydraulic jacking device (404) to periodically move up and down when rotating, and the first spring (403) is arranged above a rod at one end of the toggle gear (401) of the first lever (402).
3. The automatic wine making metering device according to claim 2, wherein the graduated scale strip (5) is arranged on an output end piston (4042) of the hydraulic jacking device (404), a stop block (501) is clamped on the graduated scale strip (5), and the upper top surface of the stop block (501) is an inclined surface.
4. An automatic wine-making metering device according to claim 3, wherein the trigger device (6) further comprises a second lever (601), a trigger plate (602), a second spring (605) and a floating ball lever (606), the second lever (601) is arranged above the stop block (501) of the scale bar (5), the inclined surface of the stop block (501) can push the second lever (601) to rotate when the stop block (501) moves upwards, the other end of the second lever (601) leans against the trigger plate (602), one end of the driven pull rod (603) is connected with the trigger plate (602), the second spring (605) is connected with the opposite surface of the connecting surface of the trigger plate (602) and the driven pull rod (603), one end of the stop valve connecting rod (604) is connected with the stop valve (4043) of the hydraulic jacking device (404) at the side of the trigger plate (602), and the other end of the stop valve connecting rod (604) moves leftwards to open the stop valve (4043) of the hydraulic jacking device (404) ) The floating ball lever (606) is arranged on an oil tank (4044) of the hydraulic jacking device (404), one end of the floating ball lever (606) is arranged on one side of the stop valve (4043), and the floating ball lever (606) can rotate after hydraulic oil rises to push the stop valve (4043) of the hydraulic jacking device (404) to close.
5. An automatic wine-making dosing device according to claim 1, characterised in that said valve means (2) comprise: the valve device comprises a valve body (201) and a third spring, wherein a trigger buckle is arranged on the valve body (201), one end of a driven pull rod (603) is buckled with the trigger buckle to enable the valve device (2) to keep an opening state, the driven pull rod (603) can move rightwards to release the buckling with the trigger buckle, and the third spring below the valve body (201) enables the valve body (201) to move upwards to enable the valve device (2) to be closed when the buckling state is released.
6. An automatic wine-making metering device according to claim 1, wherein the moving pair comprises a valve connecting rod (701) and a third lever (702), one end of the valve connecting rod (701) is connected with the valve body (201), and the other end is connected with the third lever (702).
7. An automatic wine-making dosing device according to claim 6, characterised in that said resetting means (7) further comprise: the device comprises a cam (703), a motor (704) and a sensor (705), wherein the sensor (705) is arranged beside a station, the sensor (705) transmits a signal to the motor (704), the motor (704) drives the cam (703) to rotate, one end of a third lever (702) is arranged on the cam (703), and the cam (703) can swing when rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011141475.4A CN112345019B (en) | 2020-10-22 | 2020-10-22 | Automatic metering device for wine making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011141475.4A CN112345019B (en) | 2020-10-22 | 2020-10-22 | Automatic metering device for wine making |
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| Publication Number | Publication Date |
|---|---|
| CN112345019A true CN112345019A (en) | 2021-02-09 |
| CN112345019B CN112345019B (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011141475.4A Active CN112345019B (en) | 2020-10-22 | 2020-10-22 | Automatic metering device for wine making |
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| CN1598496A (en) * | 2003-09-17 | 2005-03-23 | 胡嘉林 | Precision metering system for transporting liquid and gas by pipeline |
| EP1588777A2 (en) * | 2004-04-23 | 2005-10-26 | Nordson Corporation | A dispenser having a pivoting actuator assembly |
| CN102288116A (en) * | 2011-05-18 | 2011-12-21 | 周泉清 | Liquid-level variable and gear variable combined high-precision measuring and metering method and device |
| US20120048029A1 (en) * | 2009-05-22 | 2012-03-01 | Kokusai Keisokuki Kabushiki Kaisha | Hydraulic system and universal testing machine |
| CN104142166A (en) * | 2014-07-28 | 2014-11-12 | 北京机械设备研究所 | Hydraulic closed oil tank oil scale corresponding to temperatures |
| CN106763803A (en) * | 2015-11-20 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of control valve for small flows |
| CN110124120A (en) * | 2019-05-15 | 2019-08-16 | 王维 | A kind of pleural effusion automatic gauge discharger |
-
2020
- 2020-10-22 CN CN202011141475.4A patent/CN112345019B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598496A (en) * | 2003-09-17 | 2005-03-23 | 胡嘉林 | Precision metering system for transporting liquid and gas by pipeline |
| EP1588777A2 (en) * | 2004-04-23 | 2005-10-26 | Nordson Corporation | A dispenser having a pivoting actuator assembly |
| US20120048029A1 (en) * | 2009-05-22 | 2012-03-01 | Kokusai Keisokuki Kabushiki Kaisha | Hydraulic system and universal testing machine |
| CN102288116A (en) * | 2011-05-18 | 2011-12-21 | 周泉清 | Liquid-level variable and gear variable combined high-precision measuring and metering method and device |
| CN104142166A (en) * | 2014-07-28 | 2014-11-12 | 北京机械设备研究所 | Hydraulic closed oil tank oil scale corresponding to temperatures |
| CN106763803A (en) * | 2015-11-20 | 2017-05-31 | 中国石油化工股份有限公司 | A kind of control valve for small flows |
| CN110124120A (en) * | 2019-05-15 | 2019-08-16 | 王维 | A kind of pleural effusion automatic gauge discharger |
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| CN112345019B (en) | 2024-01-23 |
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