CN102518573B - Adjustable quantitative injection pump - Google Patents
Adjustable quantitative injection pump Download PDFInfo
- Publication number
- CN102518573B CN102518573B CN201110416533.4A CN201110416533A CN102518573B CN 102518573 B CN102518573 B CN 102518573B CN 201110416533 A CN201110416533 A CN 201110416533A CN 102518573 B CN102518573 B CN 102518573B
- Authority
- CN
- China
- Prior art keywords
- slider
- syringe
- rod
- transmission
- output shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000002347 injection Methods 0.000 title claims abstract description 15
- 239000007924 injection Substances 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 37
- 230000005570 vertical transmission Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 12
- 230000009467 reduction Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000002572 peristaltic effect Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000000520 microinjection Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Abstract
本发明涉及一种可调式定量注射泵，在泵体上安装有减速电机，减速电机的输出轴上固定有转动块，转动块上安装有垂直于减速电机输出轴的调节螺杆，调节螺杆上安装有滑块传动销，滑块传动销的轴线偏离减速电机的输出轴轴线，滑块传动销滑动配合在滑块的横向槽内，滑块滑动配合在竖向的滑块导杆上，滑块上固定有竖向的传动杆，传动杆通过联动块与注射器的推杆相连。本发明通过减速电机、转动块、滑块传动销、滑块及传动杆组成注射器的传动机构，带动注射器推杆做活塞运动，其中滑块传动销安装在调节螺杆上，可调整滑块传动销相对于减速电机输出轴的偏心距，从而调整注射器的输出量。本发明结构简单，成本低，运行稳定可靠，控制简便。
The invention relates to an adjustable quantitative injection pump. A decelerating motor is installed on the pump body. A rotating block is fixed on the output shaft of the decelerating motor. An adjusting screw perpendicular to the output shaft of the decelerating motor is installed on the rotating block. There is a slider transmission pin, the axis of the slider transmission pin deviates from the output shaft axis of the geared motor, the slider transmission pin is slidably fitted in the transverse groove of the slider, and the slider is slidably fitted on the vertical slider guide rod, the slider A vertical transmission rod is fixed on the top, and the transmission rod is connected with the push rod of the syringe through a linkage block. In the present invention, the transmission mechanism of the syringe is composed of a deceleration motor, a rotating block, a slider transmission pin, a slider and a transmission rod to drive the syringe push rod to move the piston, wherein the slider transmission pin is installed on the adjustment screw rod, and the slider transmission pin can be adjusted Relative to the eccentricity of the output shaft of the geared motor, the output volume of the syringe can be adjusted. The invention has the advantages of simple structure, low cost, stable and reliable operation and convenient control.
Description
技术领域 technical field
本发明涉及水质在线自动监测装置中对水样进行取样的注射泵，具体地说是一种可调式定量注射泵。 The invention relates to a syringe pump for sampling water samples in a water quality on-line automatic monitoring device, in particular to an adjustable quantitative syringe pump.
背景技术 Background technique
现有的水质在线自动监测装置中对水样进行取样主要采用的是微量注射泵、工业注射泵和蠕动泵等三种。 In the existing water quality on-line automatic monitoring device, three types of water samples are mainly used for sampling water samples: micro-injection pumps, industrial injection pumps and peristaltic pumps.
微量注射泵主要是通过隔膜和柱塞形式实现吸液和排液，但是泵的排量是固定的，无法实现在一台泵上改变泵量，如果要改变泵量就需要更换新泵来实现，并且成本较高，在一些需要多路注射液且互不干扰的场合，很难满足使用需要。 The micro syringe pump mainly realizes liquid suction and discharge through the diaphragm and plunger, but the displacement of the pump is fixed, and it is impossible to change the pump volume on one pump. If you want to change the pump volume, you need to replace it with a new pump. , and the cost is high, and it is difficult to meet the needs of use in some occasions that require multiple injections without interfering with each other.
工业注射泵大多采用电机马达组件，以及与注射器相连接的推进机构，通过齿轮传动方式进行工作，由于结构较复杂，注射进样管路容易造成污染，且较难清洗，注射进样系统如果吸空引入气泡残留管中，一般较难完全排除，造成进样不准确，以及存在体积较大，控制麻烦等缺点。 Most industrial syringe pumps use motor components and the propulsion mechanism connected with the syringe to work through gear transmission. Due to the complex structure, the injection pipeline is easy to cause pollution and is difficult to clean. If the injection system sucks Air is introduced into the bubble residual tube, which is generally difficult to completely eliminate, resulting in inaccurate sample injection, large volume, and troublesome control.
蠕动泵通过对泵的弹性输送软管交替进行挤压和释放来实现泵送液体，由于软管不停的被挤压，软管的使用寿命比较短，同时软管的压紧程度会造成进样量的变化，使蠕动泵的进样准确度不如注射泵进样。 The peristaltic pump achieves pumping liquid by alternately squeezing and releasing the elastic delivery hose of the pump. Since the hose is constantly squeezed, the service life of the hose is relatively short, and the degree of compression of the hose will cause further damage. The change of the sample volume makes the sampling accuracy of the peristaltic pump not as good as that of the syringe pump.
发明内容 Contents of the invention
本发明针对上述问题，提供一种可调式定量注射泵，该注射泵的泵量可根据需要来调整，成本低。 In view of the above problems, the present invention provides an adjustable quantitative injection pump, the pump volume of which can be adjusted according to needs, and the cost is low.
按照本发明的技术方案：一种可调式定量注射泵，包括泵体及注射器，所述泵体上安装有减速电机，所述减速电机的输出轴上固定有转动块，所述转动块上安装有垂直于所述减速电机输出轴的调节螺杆，所述调节螺杆上安装有滑块传动销，所述滑块传动销的轴线偏离所述减速电机的输出轴轴线，所述滑块传动销滑动配合在滑块的横向槽内，所述滑块滑动配合在竖向的滑块导杆上，所述滑块上固定有竖向的传动杆，所述传动杆通过联动块与所述注射器的推杆相连，所述注射器的推杆平行于所述传动杆。 According to the technical solution of the present invention: an adjustable quantitative injection pump, including a pump body and a syringe, a deceleration motor is installed on the pump body, a rotating block is fixed on the output shaft of the deceleration motor, and a rotating block is installed on the rotating block There is an adjustment screw perpendicular to the output shaft of the reduction motor, on which a slider transmission pin is installed, the axis of the slider transmission pin deviates from the output shaft axis of the reduction motor, and the slider transmission pin slides fit in the transverse groove of the slider, and the slider is slidably fitted on the vertical slider guide rod, and the vertical transmission rod is fixed on the slider, and the transmission rod is connected with the injector through the linkage block. The push rods are connected, and the push rod of the syringe is parallel to the transmission rod.
所述转动块上设置有竖向槽，所述调节螺杆竖向安装于所述竖向槽内。 A vertical slot is arranged on the rotating block, and the adjusting screw is vertically installed in the vertical slot.
所述联动块上开有与所述注射器推杆头相配合的嵌槽。 The linkage block is provided with a slot matching with the syringe push rod head.
所述注射器的筒体通过注射器压板固定在所述泵体上。 The cylinder body of the syringe is fixed on the pump body through the syringe pressing plate.
所述泵体上固定有吸入阀、排出阀及排出腔体，所述吸入阀与所述排出阀之间设置有吸入阀膜，所述排出阀与所述排出腔体之间设置有排出阀膜，所述注射器的出液口通过密封圈连接在所述排出阀上。 A suction valve, a discharge valve and a discharge cavity are fixed on the pump body, a suction valve film is arranged between the suction valve and the discharge valve, and a discharge valve is provided between the discharge valve and the discharge cavity The liquid outlet of the syringe is connected to the discharge valve through a sealing ring.
所述泵体上安装有控制注射泵的微动开关，所述微动开关上并联有手动开关。 A micro switch for controlling the injection pump is installed on the pump body, and a manual switch is connected in parallel with the micro switch.
本发明的技术效果在于：本发明通过减速电机、转动块、滑块传动销、滑块及传动杆组成注射器的传动机构，带动注射器推杆做活塞运动，其中滑块传动销安装在调节螺杆上，可调整滑块传动销相对于减速电机输出轴的偏心距，从而调整注射器的输出量；本发明结构简单，成本低，运行稳定可靠，控制简便。 The technical effect of the present invention is that: the present invention forms the transmission mechanism of the syringe through the decelerating motor, the rotating block, the transmission pin of the slider, the sliding block and the transmission rod, and drives the push rod of the syringe to move the piston, wherein the transmission pin of the slider is installed on the adjusting screw rod , the eccentricity of the slider drive pin relative to the output shaft of the gear motor can be adjusted, thereby adjusting the output of the syringe; the invention has simple structure, low cost, stable and reliable operation, and easy control.
附图说明 Description of drawings
图1为本发明的结构示意图。 Fig. 1 is a structural schematic diagram of the present invention.
图2为图1的右视图。 Fig. 2 is the right side view of Fig. 1 .
图3为图1中的A-A剖视图。 Fig. 3 is a sectional view of A-A in Fig. 1 .
图4是本发明的原理示意图。 Fig. 4 is a schematic diagram of the principle of the present invention.
具体实施方式 Detailed ways
下面结合附图对本发明的具体实施方式作进一步的说明。 The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
图1~图4中，包括减速电机1、微动开关2、转动块3、调节螺杆4、滑块传动销5、滑块导杆6、滑块7、注射器推杆固定螺钉8、传动杆9、转动块固定螺钉10、泵体11、吸入口12、吸入阀13、吸入阀膜14、排出阀15、排出腔体16、排出阀膜17、排出口18、密封圈19、注射器20、注射器压板21、联动块固定螺钉22、联动块23、压板螺钉24、手动开关25、竖向槽26、横向槽27等。 In Fig. 1 to Fig. 4, it includes deceleration motor 1, micro switch 2, rotating block 3, adjusting screw 4, slider transmission pin 5, slider guide rod 6, slider 7, syringe push rod fixing screw 8, transmission rod 9. Rotating block fixing screw 10, pump body 11, suction port 12, suction valve 13, suction valve film 14, discharge valve 15, discharge cavity 16, discharge valve film 17, discharge port 18, sealing ring 19, syringe 20, Syringe pressing plate 21, linkage block fixing screw 22, linkage block 23, pressing plate screw 24, manual switch 25, vertical slot 26, transverse slot 27, etc.
如图1~图3所示，本发明是一种可调式定量注射泵，包括泵体11，泵体11上安装有减速电机1，减速电机1的输出轴上通过转动块固定螺钉10固定有转动块3。转动块3上设置有竖向槽26，竖向槽26内安装有垂直于减速电机1输出轴的调节螺杆4，调节螺杆4上螺纹连接有滑块传动销5，滑块传动销5的轴线偏离减速电机1的输出轴轴线，滑块传动销5偏心安装在转动块3上。 As shown in Figures 1 to 3, the present invention is an adjustable quantitative injection pump, including a pump body 11, on which a deceleration motor 1 is installed, and the output shaft of the deceleration motor 1 is fixed by a rotating block fixing screw 10. Turn block 3. The rotating block 3 is provided with a vertical groove 26, and an adjustment screw 4 perpendicular to the output shaft of the geared motor 1 is installed in the vertical groove 26. The adjustment screw 4 is threaded with a slider transmission pin 5, and the axis of the slider transmission pin 5 Deviated from the axis of the output shaft of the reduction motor 1, the slider transmission pin 5 is eccentrically installed on the rotating block 3.
滑块传动销5滑动配合在滑块7的横向槽27内，滑块7滑动配合在竖向的滑块导杆6上。滑块导杆6有两根，固定在泵体11内。 The slider transmission pin 5 is slidably fitted in the transverse groove 27 of the slider 7 , and the slider 7 is slidably fitted on the vertical slider guide rod 6 . There are two slide block guide rods 6, which are fixed in the pump body 11.
滑块7上固定有竖向的传动杆9，传动杆9的上端通过联动块固定螺钉22固定有联动块23。联动块23上开有与注射器20推杆头相配合的嵌槽，注射器20的推杆通过注射器推杆固定螺钉8固定在联动块23上，注射器20的推杆平行于传动杆9。注射器20的筒体通过注射器压板21及压板螺钉24固定在泵体11上。 A vertical transmission rod 9 is fixed on the slide block 7 , and the upper end of the transmission rod 9 is fixed with a linkage block 23 through a linkage block fixing screw 22 . The linkage block 23 is provided with a slot matching with the push rod head of the syringe 20 , the push rod of the syringe 20 is fixed on the linkage block 23 by the syringe push rod fixing screw 8 , and the push rod of the syringe 20 is parallel to the transmission rod 9 . The cylinder body of the syringe 20 is fixed on the pump body 11 through the syringe pressure plate 21 and the pressure plate screw 24 .
泵体11上固定有吸入阀13、排出阀15及排出腔体16。吸入阀13上设置有吸入口12，排出腔体16上设置有排出口18。吸入阀13与排出阀15之间设置有吸入阀膜14，排出阀15与排出腔体16之间设置有排出阀膜17，注射器20的出液口通过密封圈19连接在排出阀15上。 A suction valve 13 , a discharge valve 15 and a discharge cavity 16 are fixed on the pump body 11 . A suction port 12 is provided on the suction valve 13 , and a discharge port 18 is provided on the discharge cavity 16 . A suction valve film 14 is arranged between the suction valve 13 and the discharge valve 15 , a discharge valve film 17 is provided between the discharge valve 15 and the discharge cavity 16 , and the liquid outlet of the syringe 20 is connected to the discharge valve 15 through a sealing ring 19 .
泵体11上还安装有控制注射泵的微动开关2，微动开关2上并联有手动开关25。微动开关2是一个限位开关，注射泵在运行到下限时即被关断，如果要重复运行，只要将并联在微动开关2上的一个手动开关25接通就可使微动开关2复位，从而实现重复运行。注射泵的控制只要在与微动开关2的并联处联接一个由控制器控制的开关就可以实现注射泵的自动控制。 A micro switch 2 for controlling the syringe pump is also installed on the pump body 11 , and a manual switch 25 is connected in parallel with the micro switch 2 . The micro switch 2 is a limit switch, and the syringe pump will be shut off when it runs to the lower limit. If the operation is to be repeated, just turn on a manual switch 25 connected in parallel with the micro switch 2 to make the micro switch 2 Reset to achieve repeat operation. The control of the syringe pump can realize the automatic control of the syringe pump as long as a switch controlled by the controller is connected in parallel with the micro switch 2 .
本发明的工作原理及工作过程如下：如图4所示，当减速电机1开始工作时，连接在减速电机1输出轴上的转动块3带动滑块传动销5做圆周运动，同时滑块传动销5在滑块7横向槽27内做横向滑动，安装在泵体11内的两处滑块导杆6在力的作用下使滑块7做上下运动，传动杆9通过联动块23带动注射器20推杆做上下活塞运动。由减速电机1、转动块3、滑块7、滑块传动销5、传动杆9等组成的传动机构，每做一个往复运动，达到一次固定量的输出液。 The working principle and working process of the present invention are as follows: as shown in Figure 4, when the geared motor 1 starts to work, the rotating block 3 connected to the output shaft of the geared motor 1 drives the slider transmission pin 5 to make a circular motion, while the slider drives The pin 5 slides horizontally in the transverse groove 27 of the slider 7, and the two slider guide rods 6 installed in the pump body 11 make the slider 7 move up and down under the action of force, and the transmission rod 9 drives the syringe through the linkage block 23 20 push rods do piston movement up and down. The transmission mechanism that is made up of reduction motor 1, rotating block 3, slide block 7, slide block transmission pin 5, transmission rod 9 etc., every reciprocating motion, reaches a fixed amount of output liquid.
吸入阀13和排出阀15受到吸入阀膜14和排出阀膜17的驱动行使吸液和排液的功能。当转动块3转动到180°时，注射器20经连接在吸入口12的软管吸入液体，转动块3转动到360°时，注射器20推杆推出器内液体，由排出口18排出液体，即可实现一次注射。如果需要更换注射器20，只需松开注射器推杆固定螺钉8和压板螺钉24便可轻松更换，注射器20与阀体通过一个密封圈19来连接，更换时只要将注射器20从阀体中拔出即可。 The suction valve 13 and the discharge valve 15 are driven by the suction valve film 14 and the discharge valve film 17 to perform the functions of liquid suction and liquid discharge. When the rotary block 3 rotates to 180°, the syringe 20 sucks liquid through the hose connected to the suction port 12, and when the rotary block 3 rotates to 360°, the push rod of the syringe 20 pushes out the liquid in the device, and the liquid is discharged from the discharge port 18, that is One injection can be achieved. If you need to replace the syringe 20, you only need to loosen the syringe push rod fixing screw 8 and the pressure plate screw 24 to replace it easily. The syringe 20 and the valve body are connected by a sealing ring 19. When replacing, just pull the syringe 20 out of the valve body That's it.
由于滑块传动销5安装在调节螺杆4上，可以通过调整滑块传动销5在调节螺杆4上的位置来调节滑块传动销5的偏心距，以达到调节每次输出液的量。在装置初始阶段，根据实际需要将注射泵输出量调至所需量，或选用合适注射量的注射器。 Since the slider driving pin 5 is installed on the adjusting screw rod 4, the eccentricity of the slider driving pin 5 can be adjusted by adjusting the position of the slider driving pin 5 on the adjusting screw rod 4, so as to adjust the amount of each output liquid. In the initial stage of the device, adjust the output of the syringe pump to the required amount according to actual needs, or select a syringe with a suitable injection volume.
本发明结构简单，体积较小，成本低，运行稳定可靠，控制简便，易损部件更换方便。 The invention has the advantages of simple structure, small volume, low cost, stable and reliable operation, simple and convenient control, and convenient replacement of vulnerable parts.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110416533.4A CN102518573B (en) | 2011-12-14 | 2011-12-14 | Adjustable quantitative injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110416533.4A CN102518573B (en) | 2011-12-14 | 2011-12-14 | Adjustable quantitative injection pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102518573A CN102518573A (en) | 2012-06-27 |
| CN102518573B true CN102518573B (en) | 2014-11-26 |
Family
ID=46289605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110416533.4A Expired - Fee Related CN102518573B (en) | 2011-12-14 | 2011-12-14 | Adjustable quantitative injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102518573B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866039B (en) * | 2012-10-07 | 2017-07-04 | 哈尔滨辰能工大环保科技股份有限公司 | COD on-line measurement novel sampling devices |
| CN103174619A (en) * | 2013-04-02 | 2013-06-26 | 合肥日上电器有限公司 | Reciprocating injection type metering pump |
| CN108119323A (en) * | 2018-02-06 | 2018-06-05 | 安徽仁智电子科技有限公司 | Plunger type metering pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2106908U (en) * | 1991-06-15 | 1992-06-10 | 郑安犁 | Reciprocating metering medicine-feeding pump without crankshaft mechanism |
| EP0716229B1 (en) * | 1994-12-08 | 1998-06-24 | Abel GmbH & Co., Handels- + Verwaltungsgesellschaft | Double diaphragm pump |
| CN101092953A (en) * | 2007-07-12 | 2007-12-26 | 储岳海 | Flux adjustable high precision diaphragm metering pump without pulsation |
| DE102008040199A1 (en) * | 2008-07-04 | 2010-01-07 | Robert Bosch Gmbh | Injection pump for supplying diesel fuel to internal combustion engine of passenger car, has support body twistably accommodated in cups and displaced to and fro in guide grooves perpendicular to movement direction of piston |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110030646A1 (en) * | 2009-08-10 | 2011-02-10 | Barry Leonard D | Jet exhaust piston engine |
-
2011
- 2011-12-14 CN CN201110416533.4A patent/CN102518573B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2106908U (en) * | 1991-06-15 | 1992-06-10 | 郑安犁 | Reciprocating metering medicine-feeding pump without crankshaft mechanism |
| EP0716229B1 (en) * | 1994-12-08 | 1998-06-24 | Abel GmbH & Co., Handels- + Verwaltungsgesellschaft | Double diaphragm pump |
| CN101092953A (en) * | 2007-07-12 | 2007-12-26 | 储岳海 | Flux adjustable high precision diaphragm metering pump without pulsation |
| DE102008040199A1 (en) * | 2008-07-04 | 2010-01-07 | Robert Bosch Gmbh | Injection pump for supplying diesel fuel to internal combustion engine of passenger car, has support body twistably accommodated in cups and displaced to and fro in guide grooves perpendicular to movement direction of piston |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102518573A (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100575701C (en) | Metering pumps and their drives | |
| CN102518573B (en) | Adjustable quantitative injection pump | |
| CN104653426B (en) | A kind of high-purity plunger piston type micro sampling pump | |
| CN105386966A (en) | Micro diaphragm pump | |
| CN102700762A (en) | Solid-liquid mixing and filling pump with quantitative function | |
| CN109018730B (en) | a pipette gun | |
| CN111412128B (en) | A linear peristaltic pump | |
| CN111120278B (en) | A precision diaphragm pump | |
| CN102141019A (en) | Novel metering pump | |
| CN111940239A (en) | Intelligent miniature metering screw valve of special dispensing and conveying equipment | |
| CN112780516A (en) | Quantitative liquid injection machine | |
| CN206903843U (en) | A kind of electric diaphragm pump | |
| CN111980892B (en) | A linear moving tube peristaltic pump | |
| CN216044232U (en) | Plunger pump | |
| CN104314802A (en) | Crank pendulum rod metering pump | |
| CN207168787U (en) | A kind of syringe pump | |
| CN202073760U (en) | Micro flow variable plunger pump with stepping motor | |
| CN202001238U (en) | Novel metering pump | |
| CN112983774A (en) | Metering pump capable of intelligently and digitally adjusting flow and application thereof | |
| CN207393590U (en) | Piston type pneumatic source device | |
| CN105626487B (en) | pulse-free plunger pump | |
| CN223062618U (en) | A pneumatic diaphragm pump | |
| CN221664860U (en) | Plunger pump with screw rod driving piston to move | |
| CN207366266U (en) | A kind of fluid pressure type water quality monitor metering device | |
| CN112012911A (en) | Liquid drip pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 |