CN110217434A - A kind of plunger pump feeding device - Google Patents
A kind of plunger pump feeding device Download PDFInfo
- Publication number
- CN110217434A CN110217434A CN201910510075.7A CN201910510075A CN110217434A CN 110217434 A CN110217434 A CN 110217434A CN 201910510075 A CN201910510075 A CN 201910510075A CN 110217434 A CN110217434 A CN 110217434A
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- reversal valve
- material cylinder
- fixed
- rod
- gear
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- 239000000463 material Substances 0.000 claims abstract description 111
- 230000008859 change Effects 0.000 claims abstract description 23
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 230000003670 easy-to-clean Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B37/00—Supplying or feeding fluent-solid, plastic, or liquid material, or loose masses of small articles, to be packaged
- B65B37/06—Supplying or feeding fluent-solid, plastic, or liquid material, or loose masses of small articles, to be packaged by pistons or pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention provides a kind of plunger pump feeding device, including charging basket, fitting machine plate, reversal valve swing arm, reversal valve connecting rod, mobile clutch, clutch pull rod, material cylinder and material cylinder gear.Plunger pump feeding device provided by the invention is equipped with material cylinder, and the discharge quantity of material cylinder is adjustable, improves the feed precision of plunger pump feeding device；Material cylinder uses the vertical material cylinder of underneath type, and charging rate is greater than horizontal material cylinder；The discharge port of change valve, material cylinder and charging basket is all made of ready-packaged joint connection, easy to disassemble, easy to clean and maintenance.
Description
Technical field
The present invention relates to feeding device technical fields, more particularly, to a kind of plunger pump feeding device.
Background technique
Plunger pump (abbreviation plunger pump) is the supply part of Small bag packaging machine, be mainly used in chemical industry, food, flavouring,
The batch packages such as medicine.Plunger pump is Mechanical Driven, because of the high feature of high production efficiency plunger accuracy of measurement, is answered extensively at present
With.
Plunger pump is connected with material cylinder as supply part, plunger pump, is fed by material cylinder blanking to packing machine, currently,
Material cylinder is usually to use horizontal material cylinder.
The blanking velocity of horizontal material cylinder is usually slow, when the packaging speed of packing machine is very fast, due to horizontal material
When the blanking velocity of cylinder is not caught up with, it usually needs it is auxiliary to the blanking velocity progress of horizontal material cylinder to increase additional driving structure
It helps.
Summary of the invention
The present invention provides a kind of plunger pump feeding device for overcoming the above problem or at least being partially solved the above problem,
Including charging basket, fitting machine plate, reversal valve swing arm, reversal valve connecting rod, mobile clutch, clutch pull rod, material cylinder and material cylinder gear；
It is provided with feed opening and discharge port on the charging basket, the fitting machine is set in the side of the discharge port of the charging basket
Plate, one end of the reversal valve swing arm connect the upper end of the reversal valve connecting rod, and the other end of the reversal valve swing arm passes through institute
It states fitting machine plate to be fixed on change valve on the discharge port of the charging basket, reversal valve valve is installed in the change valve
The lower end of core, the reversal valve connecting rod is fixed on the fitting machine plate by reversal valve crankshaft, and the clutch pull rod is close
One end of clutch pull rod handle is fixed on the fitting machine plate, the other end of the clutch pull rod and the mobile clutch
One end of device is fixed, and the other end of the mobile clutch is fixed with power input shaft, one end of the power input shaft and dynamic
Power input sprocket is fixed, and the other end of the power input shaft is fixed by the fitting machine plate and the material cylinder gear；
The vertical material cylinder of underneath type, the reversal valve are equipped with by the change valve below the discharge port of the charging basket
Valve body fixes the discharge port of the charging basket and the material cylinder, and the material cylinder is configured with material cylinder piston, is pushed away by material cylinder piston rod
Move the material cylinder piston, the material cylinder piston rod is fixed by straight-bar bulb spherical plain bearing rod end and adjustable offset mandrel, it is described can
Tuningout mandrel configures corresponding adjustment screw.
The invention has the benefit that the plunger pump feeding device provided is equipped with material cylinder, and the discharge quantity of material cylinder is adjustable,
Improve the feed precision of plunger pump feeding device；Material cylinder uses the vertical material cylinder of underneath type, and charging rate is greater than horizontal material cylinder；It changes
It is all made of ready-packaged joint connection to the discharge port of valve body, material cylinder and charging basket, easy to disassemble, easy to clean and maintenance.
Based on the above technical solution, the present invention can also improve as follows.
Further, the reversal valve swing arm is fixed by the upper end of the first oscillating bearing and the reversal valve connecting rod, institute
The lower end for stating reversal valve connecting rod is fixed by second joint bearing and the reversal valve crankshaft, and the reversal valve crankshaft is fixed on institute
It states on fitting machine plate.
Further, the reversal valve swing arm and the reversal valve crankshaft are L-shaped, and one end of the reversal valve swing arm is logical
The one end for crossing screw thread and the first oscillating bearing is fixed, the upper end of the other end of first oscillating bearing and the reversal valve connecting rod
It is fixed, the other end of the reversal valve swing arm, the change valve and the fitting machine plate are fixed by screw；
One end of the reversal valve crankshaft is fixed by one end of screw thread and the second joint bearing, the second joint
The other end of bearing and the lower end of the reversal valve connecting rod are fixed, and are fixed on the other end of the reversal valve crankshaft by screw
On the fitting machine plate.
Further, the upper end of the material cylinder piston rod is connect by flange-type linear bearing with the material cylinder piston, institute
The lower end for stating material cylinder piston rod is fixed by straight-bar bulb spherical plain bearing rod end and adjustable offset mandrel.
Further, the straight-bar bulb spherical plain bearing rod end is divided into two sections, the straight-bar bulb rod end joint shaft
The upper section held is connect with the material cylinder piston rod, and the lower section of the straight-bar bulb spherical plain bearing rod end and the adjustable offset mandrel are solid
Fixed, the lower section of the straight-bar bulb spherical plain bearing rod end can be rotated.
Further, the lower section of the straight-bar bulb spherical plain bearing rod end is equipped with reversal valve gear and material cylinder from top to bottom
Gear, the reversal valve gear and the material cylinder gear are engaged by gear and are connected.
Further, the one end of the reversal valve crankshaft far from the reversal valve connecting rod is fixed with the reversal valve gear.
Further, material injection nozzle is also equipped with by the change valve, underneath type is installed on the material injection nozzle and is hung down
Straight gyrus inhales cylinder, and the resorption cylinder is configured with resorption the cylinder piston and resorption cylinder piston rod, and the lower end of the resorption cylinder piston rod connects
There is a straight-bar bulb spherical plain bearing rod end, the lower section of the straight-bar bulb spherical plain bearing rod end is equipped with resorption cylinder gear, and described time
It inhales cylinder gear and engages connection with the material cylinder gear gear.
Further, the side of the charging basket is provided with form, passes through the material in charging basket described in the form observable.
Detailed description of the invention
Fig. 1 is the plunger pump feeding device assembly structure figure of one embodiment of the invention；
Fig. 2 is the material cylinder of one embodiment of the invention and the assembly structure figure of resorption cylinder；
Fig. 3 is the material cylinder assembly structure figure of one embodiment of the invention；
Fig. 4 is the material cylinder of another embodiment of the present invention and the assembly structure figure of resorption cylinder.
In attached drawing, component names representated by each label are as follows:
1, feed opening, 2, charging basket, 3, form, 4, fitting machine plate, 5, reversal valve swing arm, the 61, first oscillating bearing, 62,
Two oscillating bearings, 7, reversal valve connecting rod, 8, reversal valve crankshaft, 9, clutch pull rod, 10, power input sprocket, 11, power input
Axis, 12, mobile clutch, 13, change valve, 14, change-over valve core, 15, material cylinder, 16, material cylinder piston, 17, flange-type it is straight
Spool is held, 18, material cylinder piston rod, 19, straight-bar bulb spherical plain bearing rod end, 20, clutch pull rod handle, 21, adjustable offset mandrel,
22, adjustment screw, 23, reversal valve gear, 24, material cylinder gear, 25, resorption cylinder gear, 26, material injection nozzle, 27, resorption cylinder.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Referring to Fig. 1 and Fig. 3, the plunger pump feeding device of one embodiment of the invention is provided, the plunger pump feeding device
Including charging basket 2, fitting machine plate 4, reversal valve swing arm 5, reversal valve connecting rod 7, mobile clutch 12, clutch pull rod 9,15 and of material cylinder
Material cylinder gear 24.
Wherein, it is provided with feed opening 1 and discharge port on charging basket 2, fitting machine plate 4 is set in the side of the discharge port of charging basket 2,
The upper end of one end connection reversal valve connecting rod 7 of reversal valve swing arm 5, the other end of reversal valve swing arm 5 will be commutated by fitting machine plate 4
Valve body 13 is fixed on the discharge port of charging basket 2, and fitting machine plate 4 is fixed on by reversal valve crankshaft 8 in the lower end of reversal valve connecting rod 7
On.Clutch pull rod 9 is fixed on fitting machine plate 4 close to one end of clutch pull rod handle 20, the other end of clutch pull rod 9
Fixed with one end of mobile clutch 12, clutch pull rod 9 can be pulled by clutch pull rod handle 20, so pull it is mobile from
Clutch 12.The other end and power input shaft 11 of mobile clutch 12 are fixed, and one end of power input shaft 11 and power input chain
Wheel 10 is fixed, and the other end of power input shaft 11 is fixed by fitting machine plate 4 and material cylinder gear 24.
Wherein, the side of charging basket 2 is provided with form 3, passes through the material in 3 observable charging basket 2 of form.The discharging of charging basket 2
The vertical material cylinder 15 of underneath type is equipped with by change valve 13 below mouthful, change-over valve core is installed in change valve 13
14, change valve 13 is fixed by the discharge port of charging basket 2 and material cylinder 15, and material cylinder 15 is configured with material cylinder piston 16, living by material cylinder
Stopper rod 18 pushes material cylinder piston 16, and material cylinder piston rod 18 is solid by straight-bar bulb spherical plain bearing rod end 19 and adjustable offset mandrel 21
It is fixed, corresponding adjustment screw 22 is configured for adjustable offset mandrel 21, adjustment screw 22 can be used to adjust adjustable offset mandrel 21.
In one embodiment of the invention, reversal valve swing arm 5 passes through the upper of the first oscillating bearing 61 and reversal valve connecting rod 7
End is fixed, and the lower end of reversal valve connecting rod 7 is fixed by second joint bearing 62 and reversal valve crankshaft 8, and reversal valve crankshaft 8 is fixed on
On fitting machine plate 4.
Wherein, reversal valve swing arm 5 and reversal valve crankshaft 8 are L-shaped, and one end of reversal valve swing arm 5 passes through screw thread and first
One end of oscillating bearing 61 is fixed, and the upper end of the other end and reversal valve connecting rod 7 of the first oscillating bearing 61 is fixed, will by screw
The other end, change valve 13 and the fitting machine plate 4 of reversal valve swing arm 5 are fixed.One end of reversal valve crankshaft passes through screw thread and the
One end of two oscillating bearings 62 is fixed, and the lower end of the other end and reversal valve connecting rod 7 of second joint bearing 62 is fixed, and passes through screw
The other end of reversal valve crankshaft 8 is fixed on fitting machine plate 4.
In one embodiment of the invention, the upper end of material cylinder piston rod 18 is living by flange-type linear bearing 17 and material cylinder
The lower end of 16 connection of plug, material cylinder piston rod 18 is fixed by straight-bar bulb spherical plain bearing rod end 19 and adjustable offset mandrel 21.Wherein,
Straight-bar bulb spherical plain bearing rod end 19 divides for two sections, the upper section and material cylinder piston rod 18 of straight-bar bulb spherical plain bearing rod end 19
Connection, the lower section and adjustable offset mandrel 21 of straight-bar bulb spherical plain bearing rod end 19 are fixed, straight-bar bulb spherical plain bearing rod end 19
Lower section can be rotated.
Referring to fig. 2 and Fig. 4, in one embodiment of the invention, the lower section of straight-bar bulb spherical plain bearing rod end 19 is by upper
Reversal valve gear 23 and material cylinder gear 24 are installed under, reversal valve gear 23 and material cylinder gear 24 are engaged by gear to be connected.
Wherein, reversal valve gear 23 is fixedly connected with reversal valve crankshaft 8 far from one end of reversal valve upright bar.
In one embodiment of the invention, material injection nozzle 26 is also equipped with by change valve 13, pacified on material injection nozzle 26
Similar with material cylinder 15 equipped with the vertical resorption cylinder 27 of underneath type, resorption cylinder 27 is configured with resorption the cylinder piston and resorption cylinder piston rod, returns
The lower end for inhaling cylinder piston rod is connected with straight-bar bulb spherical plain bearing rod end 19, the lower section installation of straight-bar bulb spherical plain bearing rod end 19
There is resorption cylinder gear 25, resorption cylinder gear 25 engages connection with 24 gear of material cylinder gear.Wherein, the installation connection of resorption cylinder 27 can
It is connected referring to the installation of material cylinder 15, does not do excessive description herein.
The working principle of material cylinder in plunger pump feeding device provided by the invention are as follows: (1) mobile clutch 12 closes, power
Passing to power input shaft 11 by power input sprocket 10 makes material cylinder gear 24 rotate clockwise promotion 16 uplink of material cylinder piston, material
Cylinder gear 24 rotates clockwise driving reversal valve gear 23 and rotates counterclockwise, pushes change-over valve core 14 by reversal valve connecting rod 7
Rotation counterclockwise, feed inlet are closed, and outlet is opened；(2) feed inlet is closed, and outlet is opened, 16 uplink of material cylinder piston, material row
Out；(3) material cylinder gear 24, which rotates clockwise, pulls 16 downlink of material cylinder piston, and material cylinder gear 24 rotates clockwise driving reversal valve tooth
The rotation counterclockwise of wheel 23, pushes change-over valve core 14 to rotate clockwise by reversal valve connecting rod 7, and outlet is closed, and feed inlet is opened；
(4) outlet is closed, and feed inlet is opened, 16 downlink of material cylinder piston, and material sucks material cylinder 15.
The working principle of change valve 13 are as follows: (1) rotation driving reversal valve connecting rod 7 makes to change reversal valve gear 23 counterclockwise
It is swung to 5 vertical 90 degree of valve swing arm, change-over valve core 14 is connected in reversal valve swing arm 5, and row is cut at the inlet and outlet of material cylinder 15 and gently changed.
The working principle of resorption cylinder are as follows: (1) change-over valve core 14 commutates, and resorption the cylinder piston movement velocity is zero, commutation rotation
Rotary speed is zero, and piston stroking upward is fastest；(2) change-over valve core 14 commutates, and resorption the cylinder piston movement velocity is zero, commutation rotation
Rotary speed is zero, and piston downstream rate is most fast.
A kind of plunger pump feeding device provided by the invention, is equipped with material cylinder and resorption cylinder, and the discharge quantity of material cylinder and returns
The resorption amount for inhaling cylinder is adjustable, improves the feed precision of plunger pump feeding device；Material cylinder uses the vertical material cylinder of underneath type, charging
Speed is greater than horizontal material cylinder, and the resorption amount of resorption cylinder is adjustable, improves feeding device；Change valve, material cylinder, resorption cylinder and go out
Material mouth is all made of ready-packaged joint connection, conveniently detachable to be cleaned and repaired.
Finally, the present processes are only preferable embodiment, it is not intended to limit the scope of the present invention.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (9)
1. a kind of plunger pump feeding device, which is characterized in that including charging basket (2), fitting machine plate (4), reversal valve swing arm (5), change
To valve connecting rod (7), mobile clutch (12), clutch pull rod (9), material cylinder (15) and material cylinder gear (24)；
It is provided with feed opening (1) and discharge port on the charging basket (2), described in the side setting of the discharge port of the charging basket (2)
Fitting machine plate (4), one end of the reversal valve swing arm (5) connect the upper end of the reversal valve connecting rod (7), the reversal valve swing arm
(5) change valve (13) is fixed on the discharge port of the charging basket (2) by the other end by the fitting machine plate (4), institute
It states and is equipped with change-over valve core (14) in change valve (13), the lower end of the reversal valve connecting rod (7) passes through reversal valve crankshaft
(8) it is fixed on the fitting machine plate (4), the clutch pull rod (9) is fixed close to the one end of clutch pull rod handle (20)
In on the fitting machine plate (4), the other end of the clutch pull rod (9) and one end of the mobile clutch (12) are fixed,
The other end of the mobile clutch (12) and power input shaft (11) are fixed, one end of the power input shaft (11) and power
Input sprocket (10) is fixed, and the other end of the power input shaft (11) passes through the fitting machine plate (4) and the material cylinder gear
(24) fixed；
The vertical material cylinder of underneath type (15), institute are equipped with by the change valve (13) below the discharge port of the charging basket (2)
State change valve (13) discharge port of the charging basket (2) and the material cylinder (15) is fixed, the material cylinder (15) is configured with material
The cylinder piston (16) pushes the material cylinder piston (16) by material cylinder piston rod (18), and the material cylinder piston rod (18) passes through straight-bar
Bulb spherical plain bearing rod end (19) and adjustable offset mandrel (21) are fixed, and the adjustable offset mandrel (21) configures corresponding adjustment screw
(22)。
2. plunger pump feeding device according to claim 1, which is characterized in that the reversal valve swing arm (5) passes through first
Oscillating bearing (61) and the upper end of the reversal valve connecting rod (7) are fixed, and the lower end of the reversal valve connecting rod (7) passes through second joint
Bearing (62) and the reversal valve crankshaft (8) are fixed, and the reversal valve crankshaft (8) is fixed on the fitting machine plate (4).
3. plunger pump feeding device according to claim 2, which is characterized in that the reversal valve swing arm (5) and described change
L-shaped to valve crankshaft, one end of the reversal valve swing arm (5) is fixed by one end of screw thread and the first oscillating bearing (61),
The other end of first oscillating bearing (61) and the upper end of the reversal valve connecting rod (7) are fixed, by screw by the commutation
The other end, the change valve (13) and the fitting machine plate (4) of valve swing arm (5) are fixed；
One end of the reversal valve crankshaft is fixed by screw thread and one end of the second joint bearing (62), the second joint
The other end of bearing (62) and the lower end of the reversal valve connecting rod (7) are fixed, by screw by the another of the reversal valve crankshaft (8)
One end is fixed on the fitting machine plate (4).
4. plunger pump feeding device according to claim 1, which is characterized in that the upper end of the material cylinder piston rod (18) is logical
It crosses flange-type linear bearing (17) to connect with the material cylinder piston (16), the lower end of the material cylinder piston rod (18) passes through straight-bar ball
Head spherical plain bearing rod end (19) and adjustable offset mandrel (21) is fixed.
5. plunger pump feeding device according to claim 4, which is characterized in that the straight-bar bulb spherical plain bearing rod end
(19) it is divided into two sections, the upper section of the straight-bar bulb spherical plain bearing rod end (19) is connect with the material cylinder piston rod (18),
The lower section of the straight-bar bulb spherical plain bearing rod end (19) and the adjustable offset mandrel (21) are fixed, and the straight-bar bulb rod end closes
The lower section of bearings (19) can be rotated.
6. plunger pump feeding device according to claim 1, which is characterized in that the straight-bar bulb spherical plain bearing rod end
(19) lower section is equipped with reversal valve gear (23) and material cylinder gear (24) from top to bottom, the reversal valve gear (23) and described
Material cylinder gear (24) is engaged by gear and is connected.
7. plunger pump feeding device according to claim 6, which is characterized in that the reversal valve crankshaft is far from the commutation
One end of valve connecting rod (7) and the reversal valve gear (23) are fixed.
8. plunger pump feeding device according to claim 1, which is characterized in that also pacified by the change valve (13)
Equipped with material injection nozzle (26), the vertical resorption cylinder (27) of underneath type, resorption cylinder (27) configuration are installed on the material injection nozzle (26)
There are resorption the cylinder piston and resorption cylinder piston rod, the lower end of the resorption cylinder piston rod is connected with straight-bar bulb spherical plain bearing rod end
(19), the lower section of the straight-bar bulb spherical plain bearing rod end (19) is equipped with resorption cylinder gear (25), the resorption cylinder gear
(25) connection is engaged with material cylinder gear (24) gear.
9. plunger pump feeding device according to claim 1, which is characterized in that the side of the charging basket (2) is provided with view
Window (3) passes through the material in charging basket (2) described in the form (3) observable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510075.7A CN110217434B (en) | 2019-06-13 | 2019-06-13 | Plunger pump feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510075.7A CN110217434B (en) | 2019-06-13 | 2019-06-13 | Plunger pump feeding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110217434A true CN110217434A (en) | 2019-09-10 |
| CN110217434B CN110217434B (en) | 2024-05-14 |
Family
ID=67816966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910510075.7A Active CN110217434B (en) | 2019-06-13 | 2019-06-13 | Plunger pump feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110217434B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008018948A (en) * | 2006-07-11 | 2008-01-31 | Hosokawa Yoko Co Ltd | Filling device, filling method and package |
| CN201272682Y (en) * | 2008-08-29 | 2009-07-15 | 杨建忠 | Material pumping and supplying device of electronic weighing filling machine |
| CN204587420U (en) * | 2015-03-06 | 2015-08-26 | 石家庄博安不锈钢设备有限公司 | A kind of mechanical quantitative cylinder bottle placer |
| CN210503390U (en) * | 2019-06-13 | 2020-05-12 | 武汉市海泰伟创科技有限公司 | Plunger pump for packaging machine |
-
2019
- 2019-06-13 CN CN201910510075.7A patent/CN110217434B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008018948A (en) * | 2006-07-11 | 2008-01-31 | Hosokawa Yoko Co Ltd | Filling device, filling method and package |
| CN201272682Y (en) * | 2008-08-29 | 2009-07-15 | 杨建忠 | Material pumping and supplying device of electronic weighing filling machine |
| CN204587420U (en) * | 2015-03-06 | 2015-08-26 | 石家庄博安不锈钢设备有限公司 | A kind of mechanical quantitative cylinder bottle placer |
| CN210503390U (en) * | 2019-06-13 | 2020-05-12 | 武汉市海泰伟创科技有限公司 | Plunger pump for packaging machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110217434B (en) | 2024-05-14 |
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