CN116510987B - Pulse plunger dispensing valve - Google Patents
Pulse plunger dispensing valve Download PDFInfo
- Publication number
- CN116510987B CN116510987B CN202310800195.7A CN202310800195A CN116510987B CN 116510987 B CN116510987 B CN 116510987B CN 202310800195 A CN202310800195 A CN 202310800195A CN 116510987 B CN116510987 B CN 116510987B
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- CN
- China
- Prior art keywords
- glue
- valve
- plunger
- channel
- cavity
- 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.)
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- 239000003292 glue Substances 0.000 claims abstract description 174
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 29
- 239000000243 solution Substances 0.000 description 9
- 238000007789 sealing Methods 0.000 description 4
- 210000005056 cell body Anatomy 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1026—Valves
Landscapes
- Coating Apparatus (AREA)
Abstract
The invention relates to the technical field of valve bodies, in particular to a pulse plunger dispensing valve, which comprises a valve body, wherein a plunger and a valve rod are arranged in the valve body, a glue inlet channel and a glue outlet channel are formed in the valve body, a liquid storage cavity is formed between the plunger and the valve body, a middle channel is connected between a valve rod mounting groove and the liquid storage cavity, a valve cavity is formed between the outer peripheral wall of the valve rod and the valve body, when the valve cavity rotates to be communicated with the glue inlet channel and the middle channel, the plunger moves outwards to suck glue into the liquid storage cavity, at the moment, the valve body is in a glue inlet state, and when the valve cavity rotates to be communicated with the glue outlet channel and the middle channel, the plunger moves inwards to press the glue into the glue outlet channel, at the moment, the valve body is in a glue outlet state; according to the invention, the rotary valve cavity is utilized to realize glue feeding and glue discharging, the pulse type glue dispensing is realized, the glue feeding process and the glue discharging process are completed in uniform rotation of the valve rod, and the signal feedback time, the glue feeding waiting time and the glue discharging waiting time are saved, so that the glue dispensing efficiency is improved.
Description
Technical Field
The invention relates to the technical field of valve bodies, in particular to a pulse plunger dispensing valve.
Background
The chinese patent with application number CN201811356596.3 discloses a glue filling mechanism, including first actuating mechanism, second actuating mechanism, the rotary valve, syringe and push rod, the rotary valve includes valve body and case, third through-hole and fourth through-hole have been seted up to the case inside, when the syringe inhales the glue solution through the rotary valve, the output shaft of second driving motor drives the case and rotates along the valve body for third through-hole and injection passageway intercommunication, and fourth through-hole and first passageway intercommunication, perhaps make fourth through-hole and injection passageway intercommunication, and third through-hole and first passageway intercommunication, the syringe is inhaled through the first passageway of rotary valve this moment, first actuating mechanism drives the vertical downward movement of push rod, the piston end downward movement of syringe is driven to the push rod, the syringe inhales the glue solution through the rotary valve. In the process, the second driving mechanism receives a signal to drive the valve core to rotate, so that the third through hole is communicated with the injection channel, when the fourth through hole is communicated with the first channel to advance the glue, the glue feeding operation can be started only when the adjacent through holes are completely aligned, the valve core needs to stay at the position in the glue feeding process to wait for glue solution to gradually enter the injector until the single glue feeding is completed, and then the second driving mechanism receives the signal to drive the valve core to continuously rotate to perform glue feeding. In the application, the second driving mechanism receives the signal to act, and the glue solution gradually enters the injector, so that a certain time is consumed, and the glue dispensing efficiency is reduced.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problems that in the prior art, a driving mechanism in a plunger dispensing valve receives a signal to act and glue solution gradually enters a syringe, a certain time is required to be consumed, so that the dispensing efficiency is reduced, and a pulse plunger dispensing valve is provided.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a pulse plunger dispensing valve, includes the valve body, valve body internally mounted has the plunger that makes linear reciprocating motion and makes rotary motion's valve rod, and the valve body is inside to be offered into gluey passageway, play gluey passageway, the plunger mounting groove that supplies the plunger to install and the valve rod mounting groove of valve rod installation, be formed with the stock solution chamber that is used for storing the glue solution between plunger and the valve body, be connected with the intermediate channel between valve rod mounting groove and the stock solution chamber, just be formed with the valve pocket between valve rod perisporium and the valve body, advance gluey passageway, go out gluey passageway and the one end that the intermediate channel is close to the valve pocket all is located the rotation orbit of valve pocket.
The rotary driving mechanism drives the valve rod to rotate, when the valve cavity rotates to be communicated with the glue feeding channel and the middle channel, the linear reciprocating driving mechanism drives the plunger to move outwards to suck glue into the liquid storage cavity, the valve body is in a glue feeding state at the moment, when the valve cavity is located at the first position, the valve cavity is at a glue feeding starting position, when the valve cavity is located at the second position, the valve cavity is in a glue feeding beam position, in the process of turning the valve cavity from the first position to the second position, glue feeding is continuously carried out in the liquid storage cavity until the valve cavity rotates to the second position, at the moment, single glue feeding is finished, single glue feeding is realized in the rotating process of the valve rod, the valve rod does not need to stay at a specific position to wait for glue feeding to finish, waiting time during the time is saved, and glue feeding efficiency is improved;
when the valve cavity rotates to be communicated with the glue outlet channel and the middle channel, the plunger moves inwards to press glue solution into the glue outlet channel, the valve body is in a glue outlet state, the valve cavity is at a glue outlet starting position when being positioned at a third position, and the valve cavity is at a glue outlet binding position when being positioned at a fourth position; in the process that the valve cavity is turned from the third position to the fourth position, the glue is continuously discharged from the liquid storage cavity until the valve cavity rotates to the fourth position, and then the glue discharge is stopped, so that the single glue discharge is completed, the valve rod can realize the single glue discharge in the rotating process without stopping at a specific position to wait for the glue discharge, the waiting time in the period is saved, and the glue discharge efficiency is improved.
The rotary driving mechanism drives the valve rod to rotate at a constant speed, glue starts to be fed when the valve rod rotates to the first position, glue is continuously fed in the process of turning from the first position to the second position, glue is stopped to be fed when the valve rod rotates to the second position, then the valve rod turns to the third position from the second position, glue is neither fed nor discharged in the process, glue is started to be discharged after the valve rod reaches the third position, glue is continuously discharged in the process of turning to the fourth position from the third position, glue is stopped to be discharged when the valve rod reaches the fourth position, then the valve rod turns to the first position from the fourth position, glue is neither fed nor discharged in the process, a cycle is formed in which glue feeding and glue discharging are intermittently performed, pulsed dispensing is realized, and the glue feeding process and the glue discharging process are completed in the continuous rotation of the valve rod, so that glue feeding waiting time and glue discharging waiting time are saved, and glue dispensing efficiency is improved.
According to the technical scheme, the rotary valve cavity is utilized to realize glue feeding and glue discharging, pulse type glue dispensing is realized, the glue feeding process and the glue discharging process are completed in uniform rotation of the valve rod, and the signal feedback time, the glue feeding waiting time and the glue discharging waiting time are saved, so that the glue dispensing efficiency is improved.
Further, a groove body is formed in the middle of the valve rod, and the groove body and the inner peripheral wall of the valve body form the valve cavity.
Further, the groove body comprises a side groove and a ring groove which are communicated with each other, the side groove is positioned at one side of the valve rod and axially extends along the valve rod, the ring groove extends along the circumferential direction of the valve rod and is opposite to the middle channel, the ring groove is always communicated with the middle channel when the valve rod rotates, and the glue inlet channel and the glue outlet channel are not positioned on the rotating track of the ring groove, namely, when the valve rod rotates, the glue inlet channel and the glue outlet channel are not always communicated with the ring groove;
when the valve rod rotates to a first position, namely the glue feeding channel is just communicated with the side groove, the plunger moves outwards, glue solution enters the side groove from the glue feeding channel, then enters the annular groove from the side groove, then enters the middle channel through the annular groove, finally enters the liquid storage cavity, continuous glue feeding is realized in the process that the valve rod rotates to a second position, the glue feeding quantity is gradually increased and then gradually reduced until the valve rod rotates to the second position, namely the glue feeding channel is blocked, and glue feeding is finished;
when the valve rod rotates to a third position, namely the glue outlet channel is just communicated with the side groove, the plunger moves inwards, glue solution enters the middle channel from the liquid storage cavity, then enters the annular groove from the middle channel, then enters the side groove through the annular groove, finally enters the glue outlet channel, continuous glue outlet is realized in the process that the valve rod rotates to a fourth position, the glue outlet quantity is gradually increased and then gradually reduced until the valve rod rotates to the fourth position, namely the glue outlet channel is blocked, and glue outlet is finished;
further, the groove body comprises a side groove positioned at one side of the valve rod, the side groove extends along the axial direction of the valve rod, and an included angle alpha between the middle channel and the glue inlet channel 1 Is smaller than the central angle alpha of the side groove 2 Thereby having a first position and a second position in a glue feeding state, and alpha 2 –α 1 Namely the included angle between the first position and the second position, and the included angle alpha between the middle channel and the glue outlet channel 3 Is also smaller than the central angle alpha of the side groove 2 Thereby, the third position and the fourth position of the glue outlet state can be provided, and alpha is 2 –α 3 Namely the included angle between the third position and the fourth position.
Furthermore, the valve body is provided with a plunger mounting groove for mounting the plunger, the plunger comprises a large-diameter section attached to the plunger mounting groove and a small-diameter section with the cross section smaller than that of the plunger mounting groove, an annular liquid storage cavity is formed among the outer peripheral wall of the small-diameter section, the large-diameter section and the plunger mounting groove, and compared with a cylindrical cavity formed between a traditional piston and the valve body, the plunger can adopt the large-diameter section and the small-diameter section with larger diameters, so that the structural strength of the plunger is improved, and the formed annular liquid storage cavity has higher precision.
Further, a reducing section is connected between the large-diameter section and the small-diameter section, and the conical surface formed by the reducing section can reduce impact on the sealing element in the plunger mounting groove, so that the service life of the sealing element is prolonged.
The invention has the beneficial effects that: according to the invention, the rotary valve cavity is utilized to realize glue feeding and glue discharging, the pulse type glue dispensing is realized, the glue feeding process and the glue discharging process are completed in uniform rotation of the valve rod, and the signal feedback time, the glue feeding waiting time and the glue discharging waiting time are saved, so that the glue dispensing efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the valve rod in the first position (the glue-in starting position);
FIG. 3 is a schematic view of the valve stem in the second position (cement paste inlet position) according to the first embodiment;
FIG. 4 is a schematic view of the valve rod in the third position (the glue outlet starting position) according to the first embodiment;
FIG. 5 is a schematic view of the valve rod in the fourth position (the cement beam outlet position) according to the first embodiment;
FIG. 6 is a front view of the valve body of the present invention;
FIG. 7 is a schematic view showing the structure of a valve stem according to the first embodiment;
in the figure, 1, a valve body; 101. a glue inlet channel; 102. a glue outlet channel; 103. a liquid storage cavity; 104. an intermediate channel; 105. a valve cavity; 106. a process hole; 2. a plunger; 201. a large diameter section; 202. a small diameter section; 203. a reducing section; 3. a valve stem; 301. a side groove; 302. and a ring groove.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
Embodiment one: as shown in fig. 1-7, the invention relates to a pulse plunger dispensing valve, which comprises a valve body 1, wherein a plunger 2 which performs linear reciprocating motion and a valve rod 3 which performs rotary motion are arranged in the valve body 1, a rotary driving mechanism for driving the valve rod 3 can be a motor, a linear reciprocating driving mechanism for driving the plunger 2 can be a screw nut mechanism, a cam mechanism and the like, and the valve rod 3 and the plunger 2 can also be arranged in a linkage way.
The valve body 1 is internally provided with a glue inlet channel 101, a glue outlet channel 102, a plunger installation groove for installing a plunger 2 and a valve rod installation groove for installing a valve rod 3, the plunger 2 comprises a large-diameter section 201 attached to the plunger installation groove and a small-diameter section 202 with the cross section smaller than the cross section of the plunger installation groove, an annular liquid storage cavity 103 is formed among the outer peripheral wall of the small-diameter section 202, the large-diameter section 201 and the plunger installation groove, and compared with a cylindrical cavity formed between a traditional piston and the valve body, the valve body can adopt the large-diameter section 201 and the small-diameter section 202 with larger diameters, so that the structural strength of the plunger 2 is improved, and the formed annular liquid storage cavity 103 has higher precision. The reducing section 203 is connected between the large diameter section 201 and the small diameter section 202, and the conical surface formed by the reducing section 203 can reduce the impact on the sealing element in the plunger mounting groove, so that the service life of the sealing element is prolonged. An intermediate channel 104 is connected between the valve rod mounting groove and the liquid storage cavity 103, a valve cavity 105 is formed between the outer peripheral wall of the valve rod 3 and the valve body 1, one ends of the glue inlet channel 101, the glue outlet channel 102 and the intermediate channel 104, which are close to the valve cavity 105, are all positioned on a rotating track of the valve cavity 105, the valve body 1 is provided with a process hole 106 for processing the intermediate channel 104, and the process hole 106 is provided with a plug.
The middle part of valve rod 3 has seted up the cell body, the cell body forms above-mentioned valve pocket 105 with the interior perisporium of valve body 1, the cell body includes side groove 301 and annular 302 of intercommunication each other, side groove 301 is located valve rod 3 one side and extends along valve rod 3 axial, annular 302 extends along valve rod 3 circumference and annular 302 and intermediate channel 104 are just right, annular 302 all the time with intermediate channel 104 intercommunication when valve rod 3 rotates, advance gluey passageway 101 and go out gluey passageway 102 all not on the rotation orbit of annular 302, promptly when valve rod 3 rotates, advance gluey passageway 101 and go out gluey passageway 102 all the time do not communicate with annular 302.
The rotary driving mechanism drives the valve rod 3 to rotate, when the valve cavity 105 rotates to be communicated with the glue feeding channel 101 and the middle channel 104, the linear reciprocating driving mechanism drives the plunger 2 to move outwards to suck glue into the liquid storage cavity 103, the valve body 1 is in a glue feeding state at the moment, when the valve cavity 105 is positioned at a first position, namely when the glue feeding channel 101 is just communicated with the side groove 301, the plunger 2 moves outwards, glue enters the side groove 301 from the glue feeding channel 101, then enters the annular groove 302 from the side groove 301, then enters the middle channel 104 through the annular groove 302, finally enters the liquid storage cavity 103, at the moment, the valve body 1 starts to feed glue, continuous glue feeding is realized in the process that the valve rod 3 rotates from the first position to the second position, the glue feeding amount is gradually increased and gradually reduced until the valve rod 3 rotates to the second position, namely the glue feeding channel 101 is blocked, the glue feeding is finished once, the single glue feeding is realized in the process, the waiting time is not required to stay at the specific position, and the glue feeding efficiency is improved; when the glue inlet channel 101 is just communicated with the side groove 301, and when the glue inlet channel 101 is about to be disconnected with the side groove 301, the channel is smaller, so that in order to avoid excessive pressure on the valve cavity 105 caused by glue inlet at this time, glue can be fed in the state that the glue inlet channel 101 is completely communicated with the side groove 301, and the stability of the glue inlet state is ensured.
Then the valve rod 3 turns from the second position to the third position, when the process neither advances to glue nor discharges glue and reaches the third position, namely when the glue discharge channel 102 is just communicated with the side groove 301, the plunger 2 moves inwards, glue liquid enters the middle channel 104 from the liquid storage cavity 103, then enters the ring groove 302 from the middle channel 104, then enters the side groove 301 through the ring groove 302, finally enters the glue discharge channel 102 to start discharging glue, continuous glue discharge is realized in the process that the valve rod 3 rotates from the third position to the fourth position, the glue discharge amount is gradually increased and then gradually reduced until the valve rod 3 rotates to the fourth position, namely the glue discharge channel 102 is blocked, the glue discharge is finished once, the valve rod 3 realizes single glue discharge in the rotating process without stopping at the specific position and waiting for the glue discharge to finish, the waiting time during the period is saved, and the glue discharge efficiency is improved. When the glue outlet channel 102 is just communicated with the side groove 301, and when the glue outlet channel 102 is about to be disconnected with the side groove 301, the channel is smaller, so as to avoid the excessive pressure of glue outlet on the valve cavity 105 at the moment, glue can be outlet in the state that the glue outlet channel 102 is completely communicated with the side groove 301, and the stability of the glue outlet state is ensured; the valve stem 3 is then turned from the fourth position to the first position, and the process neither advances nor discharges glue, thus forming a cycle.
Embodiment two: the second embodiment differs from the first embodiment in that: the groove body comprises a side groove 301 positioned at one side of the valve rod 3, the side groove 301 extends along the axial direction of the valve rod 3, and an included angle alpha between the middle channel 104 and the glue inlet channel 101 1 Less than the central angle alpha of the side groove 301 2 Thereby having a first position and a second position in a glue feeding state, and alpha 2 -α 1 I.e. the angle between the first position and the second position, the angle α between the middle channel 104 and the glue outlet channel 102 3 Is also smaller than the central angle alpha of the side groove 301 2 Thereby, the third position and the fourth position of the glue outlet state can be provided, and alpha is 2 -α 3 Namely the included angle between the third position and the fourth position.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (3)
1. A pulse plunger dispensing valve is characterized in that: the glue feeding device comprises a valve body (1), wherein a glue feeding channel (101) and a glue discharging channel (102) are formed in the valve body (1), a plunger (2) which moves linearly and reciprocally and a valve rod (3) which moves rotationally are arranged in the valve body (1), a liquid storage cavity (103) for storing glue solution is formed between the plunger (2) and the valve body (1), an intermediate channel (104) is connected between a mounting groove of the valve rod (3) and the liquid storage cavity (103), and a valve cavity (105) is formed between the peripheral wall of the valve rod (3) and the valve body (1);
when the valve cavity (105) rotates to be communicated with the glue feeding channel (101) and the middle channel (104), the plunger (2) moves outwards to suck glue into the liquid storage cavity (103), at the moment, the valve body (1) is in a glue feeding state, when the valve cavity (105) is positioned at a first position, the glue feeding starting position is the glue feeding beam position, and when the valve cavity (105) is positioned at a second position;
when the valve cavity (105) rotates to be communicated with the glue outlet channel (102) and the middle channel (104), the plunger (2) moves inwards to press glue into the glue outlet channel (102), at the moment, the valve body (1) is in a glue outlet state, when the valve cavity (105) is positioned at a third position, the glue outlet starting position is the glue outlet starting position, and when the valve cavity (105) is positioned at a fourth position, the glue outlet beam position is the glue outlet beam position;
a groove body is formed in the middle of the valve rod (3), and the groove body and the inner peripheral wall of the valve body (1) form the valve cavity (105);
the groove body comprises a side groove (301) and a ring groove (302) which are communicated with each other, the side groove (301) is positioned on one side of the valve rod (3) and axially extends along the valve rod (3), the ring groove (302) circumferentially extends along the valve rod (3) and is opposite to the middle channel (104), and the glue inlet channel (101) and the glue outlet channel (102) are not positioned on the rotating track of the ring groove (302).
2. The pulse plunger dispensing valve of claim 1, wherein: the valve body (1) is provided with a plunger installation groove for installing the plunger (2), and the plunger (2) comprises a large-diameter section (201) attached to the plunger installation groove and a small-diameter section (202) with the cross section smaller than the cross section of the plunger installation groove.
3. The pulse plunger dispensing valve of claim 2, wherein: a reducing section (203) is connected between the large-diameter section (201) and the small-diameter section (202).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310800195.7A CN116510987B (en) | 2023-07-03 | 2023-07-03 | Pulse plunger dispensing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310800195.7A CN116510987B (en) | 2023-07-03 | 2023-07-03 | Pulse plunger dispensing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116510987A CN116510987A (en) | 2023-08-01 |
| CN116510987B true CN116510987B (en) | 2023-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310800195.7A Active CN116510987B (en) | 2023-07-03 | 2023-07-03 | Pulse plunger dispensing valve |
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| Country | Link |
|---|---|
| CN (1) | CN116510987B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116550556B (en) * | 2023-07-03 | 2023-12-12 | 江苏高凯精密流体技术股份有限公司 | Linkage type plunger dispensing valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202447259U (en) * | 2011-12-28 | 2012-09-26 | 深圳市劲拓自动化设备股份有限公司 | Double-injection type low-pressure liquid supply apparatus |
| KR20130029588A (en) * | 2011-09-15 | 2013-03-25 | 에이피시스템 주식회사 | Apparatus for dispensing fuel and method for operating the same |
| CN105381931A (en) * | 2015-12-11 | 2016-03-09 | 昆山联滔电子有限公司 | A and B glue dispenser |
| KR102020544B1 (en) * | 2019-01-07 | 2019-09-10 | (주)케이엔디시스템 | Mixing and discharging apparatuses capable of filling and discharging liquids in various ways |
| CN218818287U (en) * | 2022-10-28 | 2023-04-07 | 东莞市思榕智能装备有限公司 | Rotary plunger valve |
-
2023
- 2023-07-03 CN CN202310800195.7A patent/CN116510987B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130029588A (en) * | 2011-09-15 | 2013-03-25 | 에이피시스템 주식회사 | Apparatus for dispensing fuel and method for operating the same |
| CN202447259U (en) * | 2011-12-28 | 2012-09-26 | 深圳市劲拓自动化设备股份有限公司 | Double-injection type low-pressure liquid supply apparatus |
| CN105381931A (en) * | 2015-12-11 | 2016-03-09 | 昆山联滔电子有限公司 | A and B glue dispenser |
| KR102020544B1 (en) * | 2019-01-07 | 2019-09-10 | (주)케이엔디시스템 | Mixing and discharging apparatuses capable of filling and discharging liquids in various ways |
| CN218818287U (en) * | 2022-10-28 | 2023-04-07 | 东莞市思榕智能装备有限公司 | Rotary plunger valve |
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| Publication number | Publication date |
|---|---|
| CN116510987A (en) | 2023-08-01 |
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