CN110375820B - Double-cylinder interactive hydraulic metering device - Google Patents
Double-cylinder interactive hydraulic metering device Download PDFInfo
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- CN110375820B CN110375820B CN201910467355.4A CN201910467355A CN110375820B CN 110375820 B CN110375820 B CN 110375820B CN 201910467355 A CN201910467355 A CN 201910467355A CN 110375820 B CN110375820 B CN 110375820B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F11/00—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it
- G01F11/02—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement
- G01F11/021—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type
- G01F11/024—Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the piston type the pistons reciprocating in rotatable cylinders
Abstract
The invention belongs to the technical field of liquid flow measurement, and particularly relates to a double-cylinder interactive hydraulic metering device. The metering device comprises a metering body, a transmission mechanism, a flow distribution valve, a first piston connecting rod mechanism and a second piston connecting rod mechanism. The metering body is used for installing or containing other mechanisms or components, the transmission mechanism and the flow distribution valve are used for completing the distribution of flow and the detection and measurement of fluid, and the first piston connecting rod mechanism and the second piston connecting rod mechanism are used for completing the conversion of hydraulic and mechanical motions. The application provides a brand-new technical scheme of an implementation mechanism and a composition structure, enriches market selection, fills a market gap, and has the remarkable technical advantages of good precision, high reliability, strong applicability, long service life and the like.
Description
Technical Field
The invention belongs to the technical field of liquid flow measurement, and particularly relates to a double-cylinder interactive hydraulic metering device.
Background
With the gradual deepening of the application level and the continuous expansion of the application field, scientific research institutions and manufacturing enterprises put higher requirements on the precision and the applicability of the liquid flow detection device. The prior art does not have a hydraulic metering product with guaranteed precision and reliability.
Disclosure of Invention
In view of this, the application provides a double-cylinder interactive hydraulic metering device to satisfy the needs of scientific research and production.
The technical scheme provided by the invention for solving the technical problem is as follows:
a dual cylinder interactive hydraulic metering device, comprising: the metering body comprises a first hydraulic cylinder, a second hydraulic cylinder and a flow distribution cavity, the first hydraulic cylinder and the second hydraulic cylinder are mutually crossed at an angle of 2/3 pi and are mutually communicated between cavities, a first flow passage and a second flow passage are arranged on the metering body and are used for communicating the flow distribution cavity with the first hydraulic cylinder, the second flow passage is used for communicating the flow distribution cavity with the second hydraulic cylinder, and a first oil port and a second oil port are further formed in the metering body. The transmission mechanism comprises a transmission shaft and an eccentric shaft, the transmission shaft and the eccentric shaft are fixedly connected, the transmission mechanism is arranged in the metering body, the transmission shaft extends out of the metering body, and the eccentric shaft is positioned at the communication part of the first hydraulic cylinder and the second hydraulic cylinder. The flow distribution valve is fixedly connected to the transmission shaft and located in the flow distribution cavity, a first notch and a second notch are formed in the flow distribution valve, the first notch is used for establishing communication between the flow distribution valve and the first flow channel, and the second notch is used for establishing communication between the flow distribution valve and the second flow channel. The first piston connecting rod mechanism is arranged in the first hydraulic cylinder and comprises a first piston body, a first guide rod, a first side cover and a first eccentric connecting rod, the first eccentric connecting rod is arranged on the first piston body, the first piston body is connected to the first guide rod in a sliding mode, the first guide rod is fixed to the first side cover, and the first eccentric connecting rod is connected to the eccentric shaft through a bearing. And the second piston connecting rod mechanism is arranged in the second hydraulic cylinder and comprises a second piston body, a second guide rod, a second side cover and a second eccentric connecting rod, the second eccentric connecting rod is arranged on the second piston body, the second piston body is connected to the second guide rod in a sliding mode, the second guide rod is fixed on the second side cover, and the second eccentric connecting rod is connected to the eccentric shaft through a bearing. Liquid to be metered is introduced into and discharged from the metering body through the first oil port and the second oil port, and metering is completed through mutual matching among the flow distribution valve, the transmission mechanism, the first piston connecting rod mechanism and the second piston connecting rod mechanism.
Preferably, in the dual-cylinder interactive hydraulic metering device provided by the application, the first piston link mechanism further comprises a first leather cup and a first pressing ring, and the first leather cup is pressed onto the first piston body by the first pressing ring and is fixed by a screw fastener; the second piston connecting rod mechanism further comprises a second leather cup and a second pressing ring, and the second leather cup is pressed onto the second piston body through the second pressing ring and is fixed through a screw fastener.
Preferably, in the double-cylinder interactive hydraulic metering device provided by the application, the double-cylinder interactive hydraulic metering device further comprises an upper cover, and the upper cover is used for sealing the flow distribution cavity.
Preferably, in the double-cylinder interactive hydraulic metering device provided by the application, the first hydraulic cylinder, the second hydraulic cylinder and the flow distribution cavity are of an integrally formed structure.
Preferably, in the double-cylinder interactive hydraulic metering device provided by the application, the double-cylinder interactive hydraulic metering device further comprises a flow regulating device, wherein the flow regulating device comprises a stroke seat, a quantity regulating screw and a regulating hand wheel; the stroke seat is arranged in the cylinder body of the first hydraulic cylinder or the second hydraulic cylinder and can be assembled on the first guide rod or the second guide rod in a sliding manner; the adjusting screw is in threaded connection with the first side cover or the second side cover, one end of the adjusting screw abuts against the stroke seat, and the other end of the adjusting screw extends out of the first side cover or the second side cover; the adjusting hand wheel is arranged at the end part of the adjusting screw.
Preferably, in the double-cylinder interactive hydraulic metering device provided by the application, the number of the first guide rod and the second guide rod can be two or one.
Preferably, in the double-cylinder interactive hydraulic metering device provided by the application, the first piston body and the first eccentric connecting rod are integrally formed, and the second piston body and the second eccentric connecting rod are integrally formed.
Preferably, in the dual-cylinder interactive hydraulic metering device provided by the application, the first piston link mechanism further comprises a first connecting piece, the first connecting piece is provided with a first link groove, the first connecting piece establishes eccentric motion connection through the cooperation of the first link groove and the bearing, and the other end of the first connecting piece is connected to the first eccentric link; the second piston connecting rod mechanism further comprises a second connecting piece, a second connecting rod groove is formed in the second connecting piece, the second connecting piece is connected in an eccentric motion mode through the matching of the second connecting rod groove and the bearing, and the other end of the second connecting piece is connected to a second eccentric connecting rod. Further preferably, the first link groove and the second link groove are both flat moon-shaped holes.
The invention has the beneficial technical effects that:
1. the application discloses a double-cylinder interactive hydraulic metering device which is a brand-new technical scheme, and the realization mechanism and the composition structure are both pioneers in the industry, and belong to the pioneering invention.
2. The application discloses interactive hydraulic pressure metering device of double-cylinder body has technical advantages such as precision is good, the reliability is high, the suitability is strong, long service life.
In order to make the technical scheme and technical effects of the invention clearer and clearer, the following describes in detail the double-cylinder interactive hydraulic metering device disclosed by the invention with reference to the drawings and the detailed description of the specification.
Drawings
FIG. 1: a top view of a dual cylinder interactive hydraulic metering device;
FIG. 2: view direction D in fig. 1;
FIG. 3: section E-F in FIG. 1;
FIG. 4: fig. 2 is a sectional view H-H.
And (4) marking and explaining:
10-a metering body, 20-a transmission mechanism, 30-a flow distribution valve, 40-a first piston connecting rod mechanism, 50-a second piston connecting rod mechanism and 60-a flow adjusting device;
110-a first hydraulic cylinder, 120-a second hydraulic cylinder, 130-a flow distribution cavity, 140-a first oil port, 150-a second oil port;
210-drive shaft, 220-eccentric;
410-a first piston body, 420-a first guide rod, 430-a first side cover, 440-a first eccentric link, 450-a first leather cup, 460-a first pressing ring, 470-a first connecting piece, 480-a first link groove;
510-a second piston body, 530-a second side cover, 540-a second eccentric link, 550-a second cup, 560-a second pressing ring,
610-stroke seat, 620-adjusting screw and 630-adjusting hand wheel.
Detailed Description
The double-cylinder interactive hydraulic metering device disclosed by the application comprises a metering body 10, a transmission mechanism 20, a flow distribution valve 30, a first piston connecting rod mechanism 40 and a second piston connecting rod mechanism 50. The metering body 10 is used to mount or house other mechanisms or components, the actuator 20 and flow distribution valve 30 are used to accomplish the distribution of flow and the sensing and measurement of fluid flow through the metering body 10, and the first piston linkage 40 and the second piston linkage 50 are used to accomplish the conversion of hydraulic to mechanical motion.
Referring to fig. 1-4, the metering body 10 includes a first hydraulic cylinder 110, a second hydraulic cylinder 120, and a flow distribution chamber 130, wherein the first hydraulic cylinder 110, the second hydraulic cylinder 120, and the flow distribution chamber 130 are integrally formed. The first hydraulic cylinder 110 and the second hydraulic cylinder 120 are crossed at an angle of 2/3 pi, the cavities are communicated with each other, a first flow passage and a second flow passage are arranged on the metering body 10, the first flow passage is used for communicating the flow distribution cavity 130 with the first hydraulic cylinder 110, the second flow passage is used for communicating the flow distribution cavity 130 with the second hydraulic cylinder 120, a first oil port 140 and a second oil port 150 are further arranged on the metering body 10, and the two oil ports are respectively used as oil inlets or oil outlets.
The dual cylinder interactive hydraulic metering device further comprises an upper cover 60, and the upper cover 60 is used for sealing the flow distribution chamber 130.
The transmission mechanism 20 includes a transmission shaft 210 and an eccentric shaft 220, the transmission shaft 210 and the eccentric shaft 220 are fixedly connected, the transmission mechanism 20 is disposed in the metering body 10, the transmission shaft 210 extends out of the metering body 10, and the eccentric shaft 220 is located at a communication position of the first hydraulic cylinder 110 and the second hydraulic cylinder 120.
The flow distributing valve 30 is fixedly connected to the transmission shaft 210, is located in the flow distributing cavity 130, and can move synchronously with the transmission shaft 210 and the eccentric shaft 220, and the flow distributing valve 30 is further provided with a first gap and a second gap, the first gap is used for establishing communication between the flow distributing valve 30 and the first flow channel, and the second gap is used for establishing communication between the flow distributing valve 30 and the second flow channel. When the first gap is communicated with the flow distributing valve 30, the fluid can enter the first flow passage through the flow distributing valve 30 and enter the first hydraulic cylinder 110 through the first flow passage; or conversely, when the first gap is communicated with the flow distributing valve 30, the fluid may also enter the first flow passage from the first hydraulic cylinder 110, enter the flow distributing valve 30 through the first flow passage, and then flow out of the metering body 10 through the first oil port 140 or the second oil port 150. The working principle between the second gap and the second flow channel is the same, and the skilled person can refer to the implementation.
The first piston link mechanism 40 is provided in the first hydraulic cylinder 110, and includes a first piston body 410, a first guide rod 420, a first side cover 430, and a first eccentric link 440. The first eccentric connecting rod 440 is disposed on the first piston body 410, the first piston body 410 is slidably coupled to the first guide rod 420, the first guide rod 420 is fixed to the first side cover 430, the first eccentric connecting rod 440 is coupled to the eccentric shaft 220 through a bearing, the first eccentric connecting rod 440 and the first piston body 410 are integrated, and the number of the first guide rods 420 is two. The first piston rod mechanism 40 further includes a first connecting member 470, the first connecting member 470 is provided with a first connecting rod slot 480 having a flat moon shape, the first connecting member 470 establishes an eccentric motion connection by cooperation of the first connecting rod slot 480 and a bearing, and the other end of the first connecting member 470 is connected to the first eccentric connecting rod 440, that is, the first eccentric connecting rod 440 is connected to the eccentric shaft 220 by a bearing. In order to enhance the sealing performance, the first piston body 410 is further provided with a first leather cup 450 and a first pressing ring 460, and the first pressing ring 460 presses the first leather cup 450 onto the first piston body 410 and is fastened by a screw fastener.
The second piston link mechanism 50 is disposed in the second hydraulic cylinder 120, and includes a second piston body 510, a second guide rod (not shown), a second side cover 530, and a second eccentric link 540, the second eccentric link 540 is disposed on the second piston body 510, the second piston body 510 is slidably coupled to the second guide rod, the second guide rod is fixed to the second side cover 530, the second eccentric link 540 is coupled to the eccentric shaft 220 through a bearing, the second piston body 510 and the second eccentric link 540 are an integrated structure, and the number of the second guide rods is two. The second piston linkage 50 further comprises a second link having a second link slot, the second link establishing an eccentric motion connection by the cooperation of the second link slot and the bearing, and the other end of the second link being connected to the second eccentric link, i.e. the second eccentric link 540 being connected to the eccentric shaft 220 by the bearing. In order to enhance the sealing performance, the second piston body 510 is further provided with a second cup 550 and a second pressing ring 560, and the second cup 550 is pressed onto the second piston body 410 by the second pressing ring 560 and is fixed by a screw fastener.
When the fluid enters the first hydraulic cylinder 110 through the flow distribution valve 30 and the first flow passage, it will exert pressure on the first piston body 410, thereby pushing the first piston body 410 to move toward the transmission mechanism 20. When the first piston body 410 moves toward the transmission mechanism 20, the transmission shaft 210 is driven to rotate by the first eccentric link 440 and the first connecting member 470, and the second piston body 510 is pushed to move away from the transmission mechanism 20, i.e., in the direction of the second side cover 530, by the second connecting member and the second eccentric link 540, so that the fluid in the second hydraulic cylinder 120 is pressed into the second flow passage. Meanwhile, when the transmission shaft 210 rotates, the flow distribution valve 30 performs a synchronous rotation motion, and the conduction state and the conduction degree of the first flow channel and the second flow channel can be adjusted by adjusting the orientations of the first notch and the second notch until the liquid flow channel between the first notch and the first flow channel is completely closed and the liquid flow channel between the second notch and the second flow channel is completely opened, at this time, all the liquid entering the metering body 10 enters the second hydraulic cylinder 120, and the first piston link mechanism 40 and the second piston link mechanism 50 perform a motion opposite to the above motion, and so on. When the first piston body 410 and the second piston body 510 reciprocate, the first guide rod 420 and the second guide rod can guide and support the movement of the piston bodies, so that the sealing performance and the reliability of the double-cylinder interactive hydraulic metering device are greatly improved, the measurement precision of the product is effectively improved, and the service life of the product is effectively prolonged.
To sum up, the double-cylinder interactive hydraulic metering device disclosed by the application provides a brand-new technical scheme of mechanism and structure, enriches market selection, fills up market blank, and has the remarkable technical advantages of good precision, high reliability, strong applicability, long service life and the like.
In an improved embodiment of the present application, the dual-cylinder interactive hydraulic metering device further includes a flow regulating device 60, the flow regulating device 60 includes a stroke seat 610, a quantity regulating screw 620 and a regulating handwheel 630; the stroke seat 610 is disposed in the cylinder body of the first hydraulic cylinder 110 or the second hydraulic cylinder 120, and slidably mounted on the first guide rod 420 or the second guide rod; the adjusting screw 620 is screwed on the first side cover 430 or the second side cover 530, one end of the adjusting screw abuts against the stroke seat 610, and the other end of the adjusting screw extends out of the first side cover 430 or the second side cover 530; an adjusting handwheel 630 is provided at the end of the adjusting screw 620.
In some modified embodiments of the present application, the number of the first guide rod 420 and the second guide rod may also be one, two or other numbers, and the first guide rod 420 and the second guide rod may also be fixed to the cylinder bodies of the first hydraulic cylinder 110 and the second hydraulic cylinder 120 instead of the first side cover and the second side cover, or the first guide rod is fixed to the side cover and the second guide rod is fixed to the cylinder body of the hydraulic cylinder.
It should be noted that the terms first and second are used herein to designate components of the dual-cylinder interactive hydraulic metering device, and are only used for distinguishing components with similar or identical functions or structures, and do not imply any sequence or difference in functions or structures of the related components, and should not be construed as limiting the functions and/or structures of the related components.
While the preferred embodiments of the present invention have been illustrated in detail in the accompanying drawings, it should be understood that the scope of the invention includes, but is not limited to, the embodiments described above; while the invention has been described with reference to specific embodiments, it will be appreciated by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. A dual cylinder interactive hydraulic metering device, comprising:
the metering body (10) comprises a first hydraulic cylinder (110), a second hydraulic cylinder (120) and a flow distribution cavity (130), the first hydraulic cylinder (110) and the second hydraulic cylinder (120) are mutually crossed at an angle of 2/3 pi, cavities of the first hydraulic cylinder and the second hydraulic cylinder are mutually communicated, a first flow passage and a second flow passage are arranged on the metering body (10), the first flow passage is used for communicating the flow distribution cavity (130) with the first hydraulic cylinder (110), the second flow passage is used for communicating the flow distribution cavity (130) with the second hydraulic cylinder (120), and a first oil port (140) and a second oil port (150) are further arranged on the metering body (10);
the transmission mechanism (20) comprises a transmission shaft (210) and an eccentric shaft (220), the transmission shaft (210) and the eccentric shaft (220) are fixedly connected, the transmission mechanism (20) is arranged in the metering body (10), the transmission shaft (210) extends out of the metering body (10), and the eccentric shaft (220) is positioned at the communication part of the first hydraulic cylinder (110) and the second hydraulic cylinder (120);
the flow distribution valve (30) is fixedly connected to the transmission shaft (210) and located in the flow distribution cavity (130), a first notch and a second notch are arranged on the flow distribution valve (30), the first notch is used for establishing communication between the flow distribution valve (30) and the first flow channel, and the second notch is used for establishing communication between the flow distribution valve (30) and the second flow channel;
a first piston link mechanism (40) disposed in the first hydraulic cylinder (110), including a first piston body (410), a first guide rod (420), a first side cover (430), and a first eccentric link (440), the first eccentric link (440) being disposed on the first piston body (410), the first piston body (410) being slidably coupled to the first guide rod (420), the first guide rod (420) being fixed to the first side cover (430), the first eccentric link (440) being coupled to the eccentric shaft (220) through a bearing;
and a second piston link mechanism (50) disposed in the second hydraulic cylinder (120), including a second piston body (510), a second guide rod, a second side cover (530), and a second eccentric link (540), wherein the second eccentric link (540) is disposed on the second piston body (510), the second piston body (510) is slidably coupled to the second guide rod, the second guide rod is fixed to the second side cover (530), and the second eccentric link (540) is coupled to the eccentric shaft (220) through a bearing.
2. The dual cylinder interactive hydraulic metering device of claim 1, wherein:
the first piston connecting rod mechanism (40) further comprises a first leather cup (450) and a first pressing ring (460), wherein the first leather cup (450) is pressed onto the first piston body (410) by the first pressing ring (460) and is fixed through a screw fastener;
the second piston connecting rod mechanism (50) further comprises a second leather cup (550) and a second pressing ring (560), wherein the second leather cup (550) is pressed onto the second piston body (510) by the second pressing ring (560) and is fixed through a screw fastener.
3. The dual cylinder interactive hydraulic metering device of claim 1, wherein:
the double-cylinder interactive hydraulic metering device also comprises an upper cover (60), and the upper cover (60) is used for sealing the flow distribution cavity (130).
4. The dual cylinder interactive hydraulic metering device of claim 1, wherein:
the double-cylinder interactive hydraulic metering device further comprises a flow regulating device (60), wherein the flow regulating device (60) comprises a stroke seat (610), a quantity regulating screw (620) and a regulating hand wheel (630); the stroke seat (610) is arranged in a cylinder body of the first hydraulic cylinder (110) or the second hydraulic cylinder (120) and can be assembled on the first guide rod (420) or the second guide rod in a sliding mode; the adjusting screw (620) is in threaded connection with the first side cover (430) or the second side cover (530), one end of the adjusting screw abuts against the stroke seat (610), and the other end of the adjusting screw extends out of the first side cover (430) or the second side cover (530); the adjusting hand wheel (630) is arranged at the end part of the adjusting screw (620).
5. The dual cylinder interactive hydraulic metering device of claim 1, wherein:
the number of the first guide rod (420) and the second guide rod is two or one.
6. A dual cylinder interactive hydraulic metering device according to any one of claims 1 to 5 wherein:
the first piston body (410) and the first eccentric link (440) are integrally formed, and the second piston body (510) and the second eccentric link (540) are integrally formed.
7. A dual cylinder interactive hydraulic metering device according to any one of claims 1 to 5 wherein:
the first piston connecting rod mechanism (40) further comprises a first connecting piece (470), a first connecting rod groove (480) is formed in the first connecting piece (470), the first connecting piece (470) is connected with an eccentric motion through the cooperation of the first connecting rod groove (480) and a bearing, and the other end of the first connecting piece (470) is connected to the first eccentric connecting rod (440);
the second piston connecting rod mechanism (50) further comprises a second connecting piece, a second connecting rod groove is formed in the second connecting piece, eccentric motion connection is established through the second connecting rod groove and the bearing through matching, and the other end of the second connecting piece is connected to the second eccentric connecting rod.
8. The dual cylinder interactive hydraulic metering device of claim 7, wherein:
the first connecting rod groove (480) and the second connecting rod groove are both flat moon-shaped holes.
9. A dual cylinder interactive hydraulic metering device according to any one of claims 1 to 5 wherein:
the first hydraulic cylinder (110), the second hydraulic cylinder (120) and the flow distribution cavity (130) are of an integrally formed structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910467355.4A CN110375820B (en) | 2019-06-13 | 2019-06-13 | Double-cylinder interactive hydraulic metering device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910467355.4A CN110375820B (en) | 2019-06-13 | 2019-06-13 | Double-cylinder interactive hydraulic metering device |
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| CN110375820A CN110375820A (en) | 2019-10-25 |
| CN110375820B true CN110375820B (en) | 2021-09-17 |
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| CN204718657U (en) * | 2015-01-29 | 2015-10-21 | 朱国旗 | A kind of urea for vehicle flowmeter |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1345218A (en) * | 1999-03-16 | 2002-04-17 | 莫尔特尼L·E·C·阿利蒂兄弟股份公司 | Precision dispenser for liquids |
| CN2580410Y (en) * | 2002-11-22 | 2003-10-15 | 中国石油天然气股份有限公司 | Improved double rotz flowmeter |
| CN1842466A (en) * | 2004-07-21 | 2006-10-04 | I.M.A.工业机械自动装置股份公司 | Dosing device for feeding an infusion product |
| RU2434204C1 (en) * | 2010-08-17 | 2011-11-20 | Федеральное государственное образовательное учреждение высшего профессионального образования "Саратовский государственный аграрный университет им. Н.И. Вавилова" | Metering device for fluid |
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| CN207395829U (en) * | 2017-10-30 | 2018-05-22 | 浙江麦得机器有限公司 | Piston-type flow-meter |
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| CN110375820A (en) | 2019-10-25 |
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