CN211287991U - One-way valve liquid injection pump - Google Patents
One-way valve liquid injection pump Download PDFInfo
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- CN211287991U CN211287991U CN201922156840.8U CN201922156840U CN211287991U CN 211287991 U CN211287991 U CN 211287991U CN 201922156840 U CN201922156840 U CN 201922156840U CN 211287991 U CN211287991 U CN 211287991U
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Abstract
The utility model relates to a control fluid measurement technical field specifically is a check valve infusion pump, connect its characterized in that including shell, inlet: the shell is a U-shaped shell with a downward opening and a groove cavity, a connecting sleeve is arranged on one side of the groove cavity, a pump sleeve is connected and arranged in an inner cavity of the connecting sleeve through a sealing sleeve, a volume cavity is arranged in the pump sleeve, through holes are correspondingly formed in the upper end and the lower end of the volume cavity, the liquid inlet connector and the liquid outlet connector are respectively located above and below the pump sleeve and are communicated with the volume cavity, an upper check valve and a lower check valve are arranged in the liquid inlet connector and the liquid outlet connector, and a valve core used for pumping liquid through reciprocating motion is arranged in the volume cavity. The valve core reciprocates in the volume cavity to change the pressure in the volume cavity, and controls the opening or closing of the upper one-way valve and the lower one-way valve, so that the liquid is sucked and discharged in the volume cavity.
Description
Technical Field
The utility model relates to a control fluid measurement technical field especially relates to a check valve charge pump.
Background
The liquid injection pump is widely applied to industries such as electrolyte, acid, alkali, glue, reagent and the like. In the existing liquid injection pump, a motor is adopted to drive a plunger rod to rotate and reciprocate in a piston body, the rotating motion is used for changing the direction of a plunger gap at the far end of the plunger rod, the reciprocating motion is used for feeding liquid and discharging liquid, and the liquid is sucked in and discharged through a liquid inlet and a liquid outlet.
The structure that adopts current rotation to release liquid, motor power is big, and the easy card pump, liquid easily backward flow in the plunger intracavity leads to the measurement inaccurate.
Disclosure of Invention
An object of the utility model is to prior art current situation, provide a simple structure, liquid do not flow back, the accurate check valve charge pump of liquid measurement.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a check valve infusion pump, includes that shell, inlet connect and liquid outlet connect its characterized in that: the shell is a U-shaped shell with a downward opening and a groove cavity, a connecting sleeve is arranged on one side of the groove cavity, a pump sleeve is connected and arranged in an inner cavity of the connecting sleeve through a sealing sleeve, a volume cavity is arranged in the pump sleeve, through holes are correspondingly formed in the upper end and the lower end of the volume cavity, the liquid inlet connector and the liquid outlet connector are respectively located above and below the pump sleeve and are communicated with the volume cavity, an upper check valve and a lower check valve are arranged in the liquid inlet connector and the liquid outlet connector, and a valve core used for pumping liquid through reciprocating motion is arranged in the volume cavity.
The groove cavity is provided with a motor base at one end close to the connecting sleeve, a driving motor is fixedly mounted at one end, far away from the connecting sleeve, of the motor base, a mounting hole is formed in the motor base along the axial center, a main shaft of the driving motor is connected with the valve core through a screw-nut assembly, and the screw-nut assembly is located in the mounting hole.
The two tail ends of the mounting hole extend outwards to form a stopping boss used for jacking the connecting sleeve and an isolating boss used for isolating the driving motor, the stopping boss and the axial end face of the motor base close to one side of the connecting sleeve form a stopping cylindrical cavity, one end of the connecting sleeve close to the motor base is provided with a convex body matched with the stopping cylindrical cavity, and the isolating boss and the other axial end face of the motor base form an isolating cylindrical cavity used for mounting the spacer sleeve.
The end face of the sealing sleeve, which is close to the pump sleeve, is provided with a first sealing ring, and the tail end of the sealing sleeve, which is located on the connecting sleeve, is sleeved with a second sealing ring.
The screw-nut assembly comprises a front nut connected with the valve core and a rear nut connected with the screw-nut through threads, a main shaft of the driving motor penetrates through the rear nut to be connected with the screw-nut, and the screw-nut assembly further comprises a nut fixing sleeve used for connecting the front nut, the screw-nut and the rear nut together.
The top of the nut fixing sleeve is provided with an induction column, and one end of the top of the motor base, which is close to the motor, is provided with an induction switch matched with the induction column for use.
And the top of the motor base is also provided with a long round hole for the induction column to slide along with the nut fixing sleeve.
One end of the groove cavity, which is far away from the connecting sleeve, is provided with a connecting plate, and the connecting plate is provided with an aviation connector.
The edge of the through hole extends outwards to form a first boss with an inverted cone shape, the top surface of the first boss extends outwards to form a second boss, and the first boss is communicated with the second boss to form a liquid inlet or outlet channel.
The beneficial effects of the utility model reside in that: the valve core reciprocates in the volume cavity to change the pressure in the volume cavity, and controls the opening or closing of the upper one-way valve and the lower one-way valve, so that the liquid is sucked and discharged in the volume cavity.
Drawings
FIG. 1 is a side view of a one-way valve infusion pump.
Fig. 2 is a cross-sectional view a-a of fig. 1.
FIG. 3 is a first perspective view of the one-way valve infusion pump.
FIG. 4 is a second perspective view of the one-way valve infusion pump.
FIG. 5 is a first exploded view of the one-way valve infusion pump.
FIG. 6 is a second exploded view of the check valve infusion pump.
Fig. 7 is a first perspective view of the pump set.
Fig. 8 is a perspective view of the pump set.
Fig. 9 is a first perspective view of the motor base.
Fig. 10 is a second perspective view of the motor base.
FIG. 11 is a schematic view of a lead screw nut assembly.
FIG. 12 is an exploded view of the lead screw nut assembly.
In the figure: 10-housing, 11-inlet connection, 12-outlet connection, 13-grooved cavity, 14-connecting sleeve, 15-sealing sleeve, 16-pump sleeve, 17-first sealing ring, 18-second sealing ring, 19-volume cavity, 20-through hole, 21-first boss, 22-second boss, 23-upper check valve, 24-lower check valve, 25-valve core, 26-motor base, 27-driving motor, 28-mounting hole, 29-stopping boss, 30-isolating boss, 31-stopping cylindrical cavity, 32-boss, 33-spacer sleeve, 34-isolating cylindrical cavity, 35-main shaft, 36-front nut, 37-lead screw nut, 38-back nut, 39-nut fixing sleeve, 40-oblong hole, 41-induction column, 42-induction switch, 43-connecting plate and 44-aviation connector.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and embodiments:
referring to fig. 1-6, the utility model discloses a check valve priming pump, including shell 10, inlet joint 11 and liquid outlet joint 12, shell 10 is the U type that the opening is downward and has vallecular cavity 13, and one side of vallecular cavity 13 is equipped with adapter sleeve 14, and the inner chamber of adapter sleeve 14 is connected through seal cover 15 and is equipped with pump housing 16, and the terminal surface that seal cover 15 is close to pump housing 16 is equipped with first sealing washer 17, and the end cover that seal cover 15 is located adapter sleeve 14 is equipped with second sealing washer 18.
As shown in fig. 7-8, a volume cavity 19 is provided in the pump sleeve 16, through holes 20 are correspondingly provided at the upper and lower ends of the volume cavity 19, a first boss 21 having an inverted cone shape extends outward from the edge of the through hole 20, a second boss 22 extends outward from the top surface of the first boss 21, and the first boss 21 and the second boss 22 are communicated to form a liquid inlet or outlet channel.
The liquid inlet joint 11 and the liquid outlet joint 12 are respectively positioned above and below the pump sleeve 16 and communicated with the volume cavity 19, an upper one-way valve 23 and a lower one-way valve 24 are arranged in the liquid inlet joint 11 and the liquid outlet joint 12, and a valve core 25 for pumping liquid through reciprocating motion is arranged in the volume cavity 19.
As shown in fig. 9-10, a motor base 26 is disposed at one end of the slot cavity 13 close to the connecting sleeve 14, a driving motor 27 is fixedly mounted at one end of the motor base 26 far from the connecting sleeve 14, a mounting hole 28 is formed along an axial center of the motor base 26, two ends of the mounting hole 28 extend outwards to form a stopping boss 29 for stopping the connecting sleeve 14 and an isolating boss 30 for isolating the driving motor 27, a stopping cylindrical cavity 31 is formed by the stopping boss 29 and an axial end face of the motor base 26 close to one side of the connecting sleeve 14, a protrusion 32 adapted to the stopping cylindrical cavity 31 is disposed at one end of the connecting sleeve 14 close to the motor base 26, and an isolating cylindrical cavity 34 for mounting the spacer 33 is formed by the isolating boss 30 and the other axial end face of the motor base 26.
The spindle 35 of the drive motor 27 is connected to the valve core 25 by a lead screw nut 37 assembly, which lead screw nut 37 assembly is located in the mounting hole 28.
As shown in fig. 11 to 12, the feed screw nut 37 assembly includes a front nut 36 connected to the valve body 25 and a rear nut 38 connected to the feed screw nut 37 by a screw, the main shaft 35 of the driving motor 27 passes through the rear nut 38 to be connected to the feed screw nut 37, and the feed screw nut 37 assembly further includes a nut fixing sleeve 39 for connecting the front nut 36, the feed screw nut 37 and the rear nut 38 together. The top of the motor base 26 is also provided with a slotted hole 40 for the induction column 41 to slide along with the nut fixing sleeve 39.
The main shaft 35 of the driving motor 27 is a screw rod, when the driving motor 27 rotates, the screw rod also rotates, and the torque is transmitted to the screw rod nut 37, because the screw rod nut 37 is connected with the nut fixing sleeve 39, the screw rod nut 37 makes axial linear movement along the screw rod, so as to drive the nut fixing sleeve 39 to make axial linear movement. The valve core 25 is fixedly connected with a front nut 36 of the feed screw nut 37 assembly through a screw, and then the valve core 25 is further driven to axially and linearly move.
The liquid inlet joint 11 is communicated with the liquid storage tank through a hose, and the liquid outlet joint 12 is also communicated with a container to be filled with liquid through a hose. When the valve core 25 moves in the direction far away from the volume cavity 19, namely the valve core 25 moves rightwards, the liquid inlet of the upper one-way valve 23 is opened, the liquid outlet is closed, liquid is sucked into the volume cavity 19 from the liquid storage tank, when the valve core 25 moves in the direction close to the volume cavity 19, namely the valve core 25 moves leftwards, the liquid outlet of the lower one-way valve 24 is opened, the liquid inlet is closed, the liquid is pushed out of the volume cavity 19 to enter a container to be filled, the upper one-way valve 23 and the lower one-way valve 24 are known products, and the upper one-way valve 23 and the lower one-way valve 24 are both provided with a liquid inlet and a liquid outlet communicated with the volume cavity 19.
An induction column 41 is arranged above the nut fixing sleeve 39, and an induction switch 42 matched with the induction column 41 is arranged at one end of the top of the motor base 26 close to the motor. The end of the slot cavity 13 far away from the connecting sleeve 14 is provided with a connecting plate 43, and an aviation connector 44 is mounted on the connecting plate 43.
The control drive unit of this application includes switching power supply, controller, driver and inductive switch 42, and inductive switch 42 is connected with the controller, and the controller all is connected with switching power supply with the driver. When the inductive switch 42 senses metal, it sends a direction signal and a pulse signal to the driver, so that the driving motor 27 rotates at a designated speed by a designated angle, thereby controlling the stroke of the linear movement of the valve core 25. On the other hand, the controller and the driver are both connected to a switching power supply, the switching power supply supplies power to the controller and the driver, and the power supply of the inductive switch 42 is supplied by the controller. In addition, the switching power supply, controller, driver and inductive switch 42 used in the present application are well known products.
The valve core 25 reciprocates in the volume cavity 19 to change the pressure in the volume cavity 19, and controls the opening or closing of the upper check valve 23 and the lower check valve 24, so that the liquid is sucked and discharged in the volume cavity 19.
Of course, the above illustration is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, so all equivalent changes made in the principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a check valve infusion pump, includes shell (10), inlet joint (11) and liquid outlet joint (12), its characterized in that: the shell (10) is of a U shape with a downward opening and a groove cavity (13), a connecting sleeve (14) is arranged on one side of the groove cavity (13), a pump sleeve (16) is connected and arranged in an inner cavity of the connecting sleeve (14) through a sealing sleeve (15), a volume cavity (19) is arranged in the pump sleeve (16), through holes (20) are correspondingly formed in the upper end and the lower end of the volume cavity (19), a liquid inlet connector (11) and a liquid outlet connector (12) are respectively located above and below the pump sleeve (16) and are communicated with the volume cavity (19), an upper check valve (23) and a lower check valve (24) are arranged in the liquid inlet connector (11) and the liquid outlet connector (12), and a valve core (25) used for pumping liquid through reciprocating motion is arranged in the volume cavity (19).
2. The one-way valve priming pump of claim 1, wherein: one end that slot chamber (13) are close to adapter sleeve (14) is equipped with motor cabinet (26), and the one end fixed mounting that adapter sleeve (14) were kept away from in motor cabinet (26) has driving motor (27), and motor cabinet (26) are opened along axial direction center has mounting hole (28), and main shaft (35) of driving motor (27) are connected with case (25) through screw-nut (37) subassembly, screw-nut (37) subassembly be located mounting hole (28).
3. The one-way valve priming pump of claim 2, wherein: two tail ends of the mounting hole (28) extend outwards to form a stopping boss (29) used for jacking the connecting sleeve (14) and an isolating boss (30) used for isolating the driving motor (27), the axial end face of one side, close to the connecting sleeve (14), of the stopping boss (29) and the motor base (26) forms a stopping cylindrical cavity (31), one end, close to the motor base (26), of the connecting sleeve (14) is provided with a convex body (32) matched with the stopping cylindrical cavity (31), and the isolating boss (30) and the other axial end face of the motor base (26) form an isolating cylindrical cavity (34) used for mounting the spacer bush (33).
4. The one-way valve priming pump of claim 3, wherein: the end face, close to the pump sleeve (16), of the sealing sleeve (15) is provided with a first sealing ring (17), and the tail end, located at the connecting sleeve (14), of the sealing sleeve (15) is sleeved with a second sealing ring (18).
5. The one-way valve priming pump of any one of claims 2 to 4, wherein: the feed screw nut (37) assembly comprises a front nut (36) connected with the valve core (25) and a rear nut (38) connected with the feed screw nut (37) through threads, a main shaft (35) of the driving motor (27) penetrates through the rear nut (38) to be connected with the feed screw nut (37), and the feed screw nut (37) assembly further comprises a nut fixing sleeve (39) used for connecting the front nut (36), the feed screw nut (37) and the rear nut (38) together.
6. The one-way valve priming pump of claim 5, wherein: an induction column (41) is arranged above the nut fixing sleeve (39), and an induction switch (42) matched with the induction column (41) for use is arranged at one end, close to the motor, of the top of the motor base (26).
7. The one-way valve priming pump of claim 6, wherein: the top of the motor base (26) is also provided with a long round hole (40) for the induction column (41) to slide along with the nut fixing sleeve (39).
8. The one-way valve priming pump of claim 1, wherein: one end of the groove cavity (13) far away from the connecting sleeve (14) is provided with a connecting plate (43), and the connecting plate (43) is provided with an aviation connector (44).
9. The one-way valve priming pump of claim 1, wherein: the edge of the through hole (20) extends outwards to form a first boss (21) with an inverted cone shape, the top surface of the first boss (21) extends outwards to form a second boss (22), and the first boss (21) is communicated with the second boss (22) to form a liquid inlet or outlet channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922156840.8U CN211287991U (en) | 2019-12-05 | 2019-12-05 | One-way valve liquid injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922156840.8U CN211287991U (en) | 2019-12-05 | 2019-12-05 | One-way valve liquid injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211287991U true CN211287991U (en) | 2020-08-18 |
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ID=72018805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922156840.8U Active CN211287991U (en) | 2019-12-05 | 2019-12-05 | One-way valve liquid injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211287991U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112780517A (en) * | 2020-12-30 | 2021-05-11 | 重庆异符科学仪器有限责任公司 | Adjustable constant delivery pump |
| CN113357119A (en) * | 2021-07-19 | 2021-09-07 | 无锡易福高压清洗设备有限公司 | Single-cylinder crankshaft-free servo plunger pump and module thereof |
-
2019
- 2019-12-05 CN CN201922156840.8U patent/CN211287991U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112780517A (en) * | 2020-12-30 | 2021-05-11 | 重庆异符科学仪器有限责任公司 | Adjustable constant delivery pump |
| CN113357119A (en) * | 2021-07-19 | 2021-09-07 | 无锡易福高压清洗设备有限公司 | Single-cylinder crankshaft-free servo plunger pump and module thereof |
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