CN210977778U - Precision servo plunger metering pump - Google Patents
Precision servo plunger metering pump Download PDFInfo
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- CN210977778U CN210977778U CN201922029634.0U CN201922029634U CN210977778U CN 210977778 U CN210977778 U CN 210977778U CN 201922029634 U CN201922029634 U CN 201922029634U CN 210977778 U CN210977778 U CN 210977778U
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- rotary valve
- piston rod
- screw shaft
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Abstract
The utility model belongs to the technical field of the pump, a accurate servo plunger measuring pump is disclosed, include: a pump body and a piston rod; the piston rod is of a barrel structure, is positioned in the inner cavity of the pump body and is used for discharging fluid in the inner cavity of the pump body; the connecting assembly comprises a screw nut and a screw shaft, the outer peripheral wall of the screw nut is connected with the barrel port of the piston rod, and the inner peripheral wall of the screw nut is in threaded fit connection with the screw shaft; the output end of the motor is connected with one end of the screw shaft, the other end of the screw shaft stretches into the barrel of the piston rod, and the motor drives the screw shaft to rotate and drives the screw nut to do axial displacement along the screw shaft so as to drive the piston rod to stretch into or draw out of the inner cavity of the pump body. This application can inhale the internal cavity of the pump body with fluid ration and steadily or discharge through accurate servo plunger measuring pump.
Description
Technical Field
The utility model belongs to the technical field of the pump technique and specifically relates to accurate servo plunger measuring pump.
Background
The mixed glue dispensing equipment on the existing market is characterized in that a glue outlet mode is that air pressure is applied to a glue storage tank through a timer for setting time at regular time, glue and a curing agent are respectively delivered to outlets of mixed glue dispensing valves through two delivery pipes, and then the glue is stirred, mixed and injected into a product through a mixing pipe, wherein the glue is influenced by air pressure, the glue output proportion is uncontrollable, so that the mixed glue cannot achieve the expected effect, and the mixing quality of the glue and the curing agent is influenced.
SUMMERY OF THE UTILITY MODEL
To the not enough among the prior art, the to-be-solved technical problem of the utility model lies in providing a precision servo plunger measuring pump, can realize fluidic input volume or output volume ration stable control.
In order to achieve the purpose, the utility model adopts the following technical proposal:
precision servo plunger measuring pump, including the pump body to and:
the piston rod is of a barrel structure, is positioned in the inner cavity of the pump body and is used for discharging fluid in the inner cavity of the pump body;
the connecting assembly comprises a lead screw nut and a lead screw shaft, the outer peripheral wall of the lead screw nut is connected with the barrel port of the piston rod, and the inner peripheral wall of the lead screw nut is in threaded fit connection with the lead screw shaft;
the motor, the output of motor with the one end of screw shaft is connected, the protruding entering of stretching of the other end of screw shaft inside the cask of piston rod, motor drive the screw shaft is rotatory and drive screw nut follows thereby the axial displacement is done to the screw shaft drives the piston rod stretches into or takes out the inside cavity of the pump body.
As a preferred technical scheme, the device also comprises a connecting rod, a mounting rack shell and an isolation shell;
the isolation shell is of a through-hole cylindrical structure, one end of the isolation shell is connected with the motor, the other corresponding end of the isolation shell is connected with the mounting frame shell, and the isolation shell is used for accommodating the screw nut, the screw shaft and the piston rod and isolating the screw nut, the screw shaft and the piston rod from the outside;
the mounting frame shell is of a through hole cylindrical structure, is positioned between the isolation shell and the pump body and is used for bearing the piston rod;
the connecting rod is cylindrical structure, install in being close to of the pump body week side of the one end of mounting bracket shell, the connecting rod is used for connecting mounting bracket shell and shield shell.
As a preferred technical scheme, the sealing device also comprises a sealing ring and a sealing ring mounting frame;
the sealing ring mounting frame is of a cylindrical through hole structure and is positioned inside the mounting frame shell, and the sealing ring mounting frame is used for bearing the piston rod and the sealing ring;
the seal ring is arranged on one side of the seal ring mounting frame and is used for preventing lubricating substances from leaking to the inner cavity of the pump body.
As a preferred technical scheme, the mounting bracket further comprises a bolt and a lubricating cup, wherein the bolt and the lubricating cup are mounted on the mounting bracket shell, the bolt is used for sealing or opening the lubricating cup, and the lubricating cup is used for bearing a lubricating substance and lubricating the mounting bracket shell, the sealing ring and the sealing ring mounting bracket through the lubricating substance.
As a preferred technical scheme, the pump further comprises a rotary valve assembly, wherein a conversion hole of a cylindrical structure is formed in one end, far away from the motor, of the body of the pump body, the conversion hole is communicated with the inner cavity of the pump body, the rotary valve assembly is installed on the conversion hole, and the rotary valve assembly is matched with the conversion hole to control fluid to enter or be discharged from the inner cavity of the pump body.
As a preferred technical scheme, the rotary valve assembly comprises a rotary valve core and a rotary valve sleeve, the rotary valve core is of a cylindrical structure, the rotary valve sleeve is of a through hole cylindrical structure, three holes are formed in the cylindrical surface of the rotary valve sleeve, two holes are oppositely arranged, the common central axis of the two holes is perpendicular to the central axis of the other hole, the rotary valve sleeve is fixedly installed relative to the pump body, and the rotary valve sleeve is sleeved on the outer side of the rotary valve core.
The connector assemblies are arranged on one side of the pump body close to the switching hole, the other connector assembly is arranged on the other corresponding side of the pump body, and the connector assemblies are used for being connected with an external fluid input pipe or an external fluid output pipe to input or discharge fluid into or out of an internal cavity of the pump body.
As a preferred technical scheme, the joint assembly includes joint and locking cap, the one end of joint is connected the pump body, the other end of joint with locking cap connects, the joint is used for connecting locking cap in on the pump body, locking cap be used for with outside fluid input tube or fluid output tube lock in on the joint.
As a preferred technical scheme, still include mounting panel and revolving cylinder, revolving cylinder passes through the mounting panel install in on the pump body is close to one side of switching hole, revolving cylinder is used for driving the rotary valve subassembly.
As a preferred technical solution, the rotary cylinder further includes a rotating shaft, one end of the rotating shaft is connected to the output end of the rotary cylinder, the other end of the rotating shaft is connected to the rotary valve core in a matching manner, and the rotating shaft drives the rotary valve core to rotate, so that the fluid input pipe is connected to the inner cavity of the pump body or the fluid output pipe is connected to the inner cavity of the pump body.
The utility model has the advantages that the provided precise servo plunger metering pump comprises a pump body and a piston rod, wherein the piston rod is in a barrel structure and is positioned in the inner cavity of the pump body; the connecting assembly comprises a screw nut and a screw shaft, the outer peripheral wall of the screw nut is connected with the barrel port of the piston rod, and the inner peripheral wall of the screw nut is in threaded fit connection with the screw shaft; the output end of the motor is connected with one end of the screw shaft, and the other end of the screw shaft stretches into the barrel of the piston rod in a protruding mode. On one hand, the motor is controlled to drive the screw shaft to rotate and drive the screw nut to axially displace along the screw shaft, so that the piston rod is driven to stretch into or draw out of the inner cavity of the pump body, and the fluid is quantitatively and stably discharged or sucked into the inner cavity of the pump body, so that the output quantity or the input quantity of the fluid is stable and controllable. On the other hand, through the piston rod that sets up the cask structure, and the one end of coupling assembling inserts in the cask structure of this piston rod, can make the overall structure of this plunger measuring pump compacter, does benefit to the product miniaturization.
Drawings
FIG. 1 is an exploded view of a first perspective of a precision servo plunger metering pump according to one embodiment;
FIG. 2 is a cross-sectional view of a precision servo plunger metering pump according to one embodiment;
FIG. 3 is a schematic diagram of a second view of the precision servo plunger metering pump according to one embodiment;
1. a pump body; 101. a transfer aperture;
2. a piston rod;
3. a connecting assembly; 31. a lead screw nut; 32. a screw shaft;
4. a motor;
5. a connecting rod;
6. a mounting bracket shell;
7. an insulating shell;
8. a seal ring;
9. a seal ring mounting frame;
10. a bolt;
11. a lubrication cup;
12. a rotary valve assembly; 121. a rotary valve core; 122. a valve sleeve is rotated;
13. a joint assembly; 131. a joint; 132. a locking cap;
14. mounting a plate;
15. and rotating the cylinder.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The first embodiment is as follows:
the precision servo plunger metering pump shown in fig. 1 to 3 comprises a pump body 1 and a piston rod 2, wherein the piston rod 2 is in a cylindrical structure and is located in an internal cavity of the pump body 1 and used for discharging fluid in the internal cavity of the pump body 1; the connecting assembly 3 comprises a lead screw nut 31 and a lead screw shaft 32, the outer peripheral wall of the lead screw nut 31 is connected with the barrel port of the piston rod 2, and the inner peripheral wall of the lead screw nut 31 is in threaded fit connection with the lead screw shaft 32; motor 4, the output of motor 4 with the one end of screw shaft 32 is connected, the protruding entering of the other end of screw shaft 32 the cask of piston rod 2 is inside, motor 4 drive screw shaft 32 is rotatory and drive screw nut 31 is followed axial displacement is followed screw shaft 32 thereby drives piston rod 2 stretches into or takes out the internal cavity of the pump body 1.
In this embodiment, the fluid is any one of flowable objects such as glue and liquid curing agent, when a certain amount of fluid needs to be input into the internal cavity of the pump body 1, the motor 4 drives the screw shaft 32 to rotate and drives the screw nut 31 to axially displace along the screw shaft 32, and the screw nut 31 moves towards the motor 4 for a fixed distance to drive the piston rod 2 to be drawn out of the internal cavity of the pump body 1, so that the fluid is stably drawn into the internal cavity of the pump body 1 according to a required amount; when the fluid in the internal cavity of the pump body 1 needs to be output according to the required amount, the motor 4 drives the screw shaft 32 to rotate and drives the screw nut 31 to axially displace along the screw shaft 32, and the screw nut 31 moves a fixed distance in the direction away from the motor 4 so as to drive the piston rod 2 to protrude into the internal cavity of the pump body 1, so that the fluid in the internal cavity of the pump body 1 is stably discharged according to the required amount.
In the embodiment, the device further comprises a connecting rod 5, a mounting rack shell 6 and an isolation shell 7; the isolation shell 7 is of a through-hole cylindrical structure, one end of the isolation shell 7 is connected with the motor 4, the other corresponding end of the isolation shell is connected with the mounting frame shell 6, and the isolation shell 7 is used for accommodating the screw nut 31, the screw shaft 32 and the piston rod 2 and isolating the screw nut 31, the screw shaft 32 and the piston rod 2 from the outside; the mounting frame shell 6 is of a through-hole cylindrical structure, the mounting frame shell 6 is located between the isolation shell 7 and the pump body 1, and the mounting frame shell 6 is used for bearing the piston rod 2; connecting rod 5 is cylindrical structure, install in being close to of the pump body 1 week side of the one end of mounting bracket shell 6, connecting rod 5 is used for connecting mounting bracket shell 6 and shield shell 7.
Preferably, the sealing device also comprises a sealing ring 8 and a sealing ring mounting frame 9; the sealing ring mounting frame 9 is of a cylindrical through hole structure, the sealing ring mounting frame 9 is located inside the mounting frame shell 6, and the sealing ring mounting frame 9 is used for bearing the piston rod 2 and the sealing ring 8; the seal ring 8 is disposed on one side of the seal ring mounting bracket 9, and the seal ring 8 is used for preventing lubricant from leaking into the inner cavity of the pump body 1.
Preferably, the mounting frame further comprises a bolt 10 and a lubricating cup 11, wherein the bolt 10 and the lubricating cup 11 are mounted on the mounting frame shell 6, the bolt 10 is used for sealing or opening the lubricating cup 11, and the lubricating cup 11 is used for bearing a lubricating substance and lubricating the mounting frame shell 6, the sealing ring 8 and the sealing ring mounting frame 9 through the lubricating substance.
In this embodiment, the seal ring mounting frame 9 is fixed to the pump body 1 by the mounting frame housing 6, and the lubrication cup 11 is used for bearing a lubricant; when lubrication is needed, the bolt 10 opens the lubricating cup 11, and a lubricating substance enters between the sealing ring mounting frame 9 and the piston rod 2 to lubricate the contact surface of the sealing ring mounting frame 9 and the piston rod 2; when lubrication is not required, the bolt 10 seals the lubrication cup 11, and the lubricant is confined in the lubrication cup 11; the sealing ring 8 is used for preventing the lubricant from leaking into the inner cavity of the pump body 1, and the quality of the fluid is affected.
In this embodiment, still include and change valve assembly 12, keeping away from of the body of the pump body 1 the one end of motor 4 is provided with the conversion hole 101 of cylindrical structure, conversion hole 101 with the internal cavity of the pump body 1 communicates with each other, change valve assembly 12 install in on the conversion hole 101, change valve assembly 12 cooperation change hole 101 control fluid and get into or discharge the internal cavity of the pump body 1.
Preferably, the rotary valve assembly 12 includes a rotary valve core 121 and a rotary valve sleeve 122, the rotary valve core 121 is a cylindrical structure, the rotary valve sleeve 122 is a through-hole cylindrical structure, three holes are formed in a cylindrical surface of the rotary valve sleeve 122, two holes of the rotary valve sleeve 122 are oppositely disposed, a common central axis of the two holes of the rotary valve sleeve 122 is perpendicular to a central axis of another hole of the rotary valve sleeve 122, the another hole of the rotary valve sleeve 122 is oppositely disposed with respect to an internal cavity of the pump body 1, the rotary valve sleeve 122 is fixedly mounted with respect to the pump body 1, and the rotary valve sleeve 122 is sleeved on an outer side of the rotary valve core 121.
In this embodiment, the connector assemblies 13 are included, the connector assemblies 13 are two sets, one set of the connector assemblies 13 is installed on one side of the pump body 1 close to the switching hole 101, the other set of the connector assemblies 13 is installed on the other corresponding side of the pump body 1, and the connector assemblies 13 are used for connecting an external fluid input pipe or a fluid output pipe to input or discharge fluid into or out of the internal cavity of the pump body 1.
Preferably, the joint assembly 13 includes a joint 131 and a locking cap 132, one end of the joint 131 is connected to the pump body 1, the other end of the joint 131 is connected to the locking cap 132, the joint 131 is used for connecting the locking cap 132 to the pump body 1, and the locking cap 132 is used for locking an external fluid input pipe or an external fluid output pipe to the joint 131.
Preferably, the rotary valve assembly further comprises a mounting plate 14 and a rotary cylinder 15, wherein the rotary cylinder 15 is mounted on one side of the pump body 1 close to the switching hole 101 through the mounting plate 14, and the rotary cylinder 15 is used for driving the rotary valve assembly 12.
Preferably, the rotating cylinder 15 further includes a rotating shaft, one end of the rotating shaft is connected to the output end of the rotating cylinder 15, the other end of the rotating shaft is connected to the rotary valve element 121 in a matching manner, and the rotating shaft drives the rotary valve element 121 to rotate, so that the fluid input pipe is connected to the inner cavity of the pump body 1 or the fluid output pipe is connected to the inner cavity of the pump body 1.
In the present embodiment, the cross section of the rotary valve element 121 is semicircular; when a certain amount of fluid needs to be input into the internal cavity of the pump body 1, the rotary cylinder 15 drives the rotary valve element 121 to rotate, two holes of the rotary valve element 122, which are perpendicular to the axis, are communicated with the internal cavity of the pump body 1 through the switching hole 101, the other hole of the rotary valve element 122 is blocked by the rotary valve element 121 in a sealing manner, the motor 4 drives the screw shaft 32 to rotate and drives the screw nut 31 to axially displace along the screw shaft 32, the screw nut 31 moves towards the motor 4 for a fixed distance so as to drive the piston rod 2 to be drawn out of the internal cavity of the pump body 1, so that the internal cavity of the pump body 1 is vacuumed, and simultaneously, the fluid of the fluid input tube enters the internal cavity of the pump body 1 through one set of the joints 131; when a certain amount of fluid needs to flow out of the internal cavity of the pump body 1, the rotary cylinder 15 drives the rotary core to rotate, two holes of the rotary valve sleeve 122, which are perpendicular to each other in the axis, are communicated with the internal cavity of the pump body 1 through the switching hole 101, the other hole of the rotary valve sleeve 122 is blocked by the rotary valve core 121 in a sealing manner, the motor 4 drives the screw shaft 32 to rotate and drives the screw nut 31 to axially displace along the screw shaft 32, and the screw nut 31 moves away from the motor 4 for a fixed distance so as to drive the piston rod 2 to protrude into the internal cavity of the pump body 1, and simultaneously, the fluid in the internal cavity of the pump body 1 is stably discharged through a fluid outlet tube.
In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in an orientation or positional relationship based on that shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. Accurate servo plunger measuring pump, including the pump body, its characterized in that still includes:
the piston rod is of a barrel structure, is positioned in the inner cavity of the pump body and is used for discharging fluid in the inner cavity of the pump body;
the connecting assembly comprises a lead screw nut and a lead screw shaft, the outer peripheral wall of the lead screw nut is connected with the barrel port of the piston rod, and the inner peripheral wall of the lead screw nut is in threaded fit connection with the lead screw shaft;
the motor, the output of motor with the one end of screw shaft is connected, the protruding entering of stretching of the other end of screw shaft inside the cask of piston rod, motor drive the screw shaft is rotatory and drive screw nut follows thereby the axial displacement is done to the screw shaft drives the piston rod stretches into or takes out the inside cavity of the pump body.
2. The precision servo plunger metering pump of claim 1, further comprising a connecting rod, a mounting bracket housing, a spacer housing;
the isolation shell is of a through-hole cylindrical structure, one end of the isolation shell is connected with the motor, the other corresponding end of the isolation shell is connected with the mounting frame shell, and the isolation shell is used for accommodating the screw nut, the screw shaft and the piston rod and isolating the screw nut, the screw shaft and the piston rod from the outside;
the mounting frame shell is of a through hole cylindrical structure, is positioned between the isolation shell and the pump body and is used for bearing the piston rod;
the connecting rod is cylindrical structure, install in being close to of the pump body week side of the one end of mounting bracket shell, the connecting rod is used for connecting mounting bracket shell and shield shell.
3. The precision servo plunger metering pump of claim 2, further comprising a seal ring and a seal ring mounting bracket;
the sealing ring mounting frame is of a cylindrical through hole structure and is positioned inside the mounting frame shell, and the sealing ring mounting frame is used for bearing the piston rod and the sealing ring;
the seal ring is arranged on one side of the seal ring mounting frame and is used for preventing lubricating substances from leaking to the inner cavity of the pump body.
4. The precision servo plunger metering pump of claim 3, further comprising a bolt and a lubrication cup mounted on the mounting bracket shell, the bolt for sealing or unsealing the lubrication cup, the lubrication cup for carrying a lubricant and lubricating the mounting bracket shell, the seal ring, and the seal ring mounting bracket with the lubricant.
5. The precision servo plunger metering pump according to claim 1, further comprising a rotary valve assembly, wherein a conversion hole with a cylindrical structure is formed in one end of the body of the pump body, which is far away from the motor, the conversion hole is communicated with the inner cavity of the pump body, the rotary valve assembly is mounted on the conversion hole, and the rotary valve assembly is matched with the conversion hole to control fluid to enter or exit the inner cavity of the pump body.
6. The precision servo plunger metering pump according to claim 5, wherein the rotary valve assembly comprises a rotary valve core and a rotary valve sleeve, the rotary valve core is of a cylindrical structure, the rotary valve sleeve is of a through hole cylindrical structure, three holes are formed in the cylindrical surface of the rotary valve sleeve, two holes are oppositely arranged, the common central axis of the two holes is perpendicular to the central axis of the other hole, the rotary valve sleeve is fixedly installed relative to the pump body, and the rotary valve sleeve is sleeved on the outer side of the rotary valve core.
7. The precision servo plunger metering pump of claim 6, comprising two sets of joint assemblies, wherein one set of joint assemblies is mounted on one side of the pump body near the transfer hole, the other set of joint assemblies is mounted on the other corresponding side of the pump body, and the joint assemblies are used for connecting with an external fluid input pipe or fluid output pipe to input or output fluid into or out of the internal cavity of the pump body.
8. The precision servo plunger metering pump of claim 7, wherein the joint assembly comprises a joint and a locking cap, one end of the joint is connected to the pump body, the other end of the joint is connected to the locking cap, the joint is used for connecting the locking cap to the pump body, and the locking cap is used for locking an external fluid input pipe or an external fluid output pipe to the joint.
9. The precision servo plunger metering pump of claim 6, further comprising a mounting plate and a rotary cylinder mounted to the pump body on a side thereof adjacent to the transfer aperture through the mounting plate, the rotary cylinder being configured to drive the rotary valve assembly.
10. The precision servo plunger metering pump according to claim 9, wherein the rotary cylinder further comprises a rotary shaft, one end of the rotary shaft is connected to the output end of the rotary cylinder, the other end of the rotary shaft is connected to the rotary valve core in a matching manner, and the rotary shaft drives the rotary valve core to rotate, so that the fluid input pipe is connected to the inner cavity of the pump body or the fluid output pipe is connected to the inner cavity of the pump body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922029634.0U CN210977778U (en) | 2019-11-21 | 2019-11-21 | Precision servo plunger metering pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922029634.0U CN210977778U (en) | 2019-11-21 | 2019-11-21 | Precision servo plunger metering pump |
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| Publication Number | Publication Date |
|---|---|
| CN210977778U true CN210977778U (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922029634.0U Active CN210977778U (en) | 2019-11-21 | 2019-11-21 | Precision servo plunger metering pump |
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| CN (1) | CN210977778U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701017A (en) * | 2019-11-21 | 2020-01-17 | 广东力王新能源股份有限公司 | Precision servo plunger metering pump |
-
2019
- 2019-11-21 CN CN201922029634.0U patent/CN210977778U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110701017A (en) * | 2019-11-21 | 2020-01-17 | 广东力王新能源股份有限公司 | Precision servo plunger metering pump |
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