CN220522734U - High-speed pulse-free constant flow pump - Google Patents
High-speed pulse-free constant flow pump Download PDFInfo
- Publication number
- CN220522734U CN220522734U CN202322139273.1U CN202322139273U CN220522734U CN 220522734 U CN220522734 U CN 220522734U CN 202322139273 U CN202322139273 U CN 202322139273U CN 220522734 U CN220522734 U CN 220522734U
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- CN
- China
- Prior art keywords
- way valve
- crankshaft
- mandrel
- pump body
- constant flow
- Prior art date
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- 239000007788 liquid Substances 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 238000001802 infusion Methods 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 230000010349 pulsation Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model relates to the technical field of pumps for liquid output, in particular to a high-speed non-pulsation constant flow pump. The infusion pump consists of a pump body, a motor, a one-way valve and an infusion conveying structure, wherein the motor is fixed on one side of the pump body through a speed change mechanism, the output end of the speed change mechanism is connected with the input end of the infusion conveying structure, and the output end of the infusion conveying structure is respectively connected with the one-way valve and the one-way valve; the infusion conveying structure consists of a crankshaft, a connecting rod, a fixed bearing bush and a mandrel, wherein the crankshaft is rotatably and fixedly arranged in the pump body through the fixed bearing bush, one end of the crankshaft is connected with the output end of the speed change mechanism, one end of the connecting rod is arranged on the crankshaft through a bearing, the other end of the connecting rod is connected with one end of the mandrel through a connecting bearing, the other end of the mandrel is accommodated in a sealing cavity formed by the pump body and the one-way valve, and the one-way valve controls the inlet and the outlet of liquid from the liquid inlet and the liquid outlet through valve cores in the one-way valve.
Description
Technical Field
The utility model relates to the technical field of pumps for outputting liquid, in particular to a high-speed pulse-free constant flow pump suitable for liquid injection and filling in the industries of small-dose electrolyte, acid-base solution, ultrapure water, medical reagent and the like, and can also be used for constant flow transfusion with other liquid properties, flow and pressure ranges equivalent.
Background
At present, the existing constant flow pump takes a cam as a transmission shaft to drive a transmission rod to do reciprocating motion, and in the motion process, the contact part of the cam and a valve rod is a point or a line, so that the cam is easy to wear; in the running process of each circle of cam, a far repose angle and a near repose angle exist, namely when the far repose angle and the near repose angle are reached, instantaneous stagnation and clearance exist in the motion, and the motion is not really pulsation-free, so that the stability of the output process is affected;
the camshaft is used as the transmission shaft, the structure stroke is small, the transmission torque is small, the processing cost is high, the plastic material of the liquid inlet and outlet one-way valve core is easy to wear and deform, and the liquid leakage can be caused by blockage or incapability of rebound;
the sealing element is mostly made of plastic materials, is easy to deform and affects the precision.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a high-speed pulse-free constant flow pump driven by a crankshaft connecting rod mechanism.
The utility model adopts the following technical scheme:
the high-speed pulse-free constant flow pump consists of a pump body, a motor, a one-way valve and an infusion conveying structure, wherein the motor is fixed on one side of the pump body through a speed change mechanism, the output end of the speed change mechanism is connected with the input end of the infusion conveying structure, and the output end of the infusion conveying structure is connected with the one-way valve; the infusion conveying structure consists of a crankshaft, a connecting rod, a fixed bearing bush and a mandrel, wherein the crankshaft is rotatably and fixedly arranged in the pump body through the fixed bearing bush, one end of the crankshaft is connected with the output end of the speed change mechanism, one end of the connecting rod is arranged on the crankshaft through a bearing, the other end of the connecting rod is connected with one end of the mandrel through a connecting bearing, the other end of the mandrel is accommodated in a sealing cavity formed by the pump body and the one-way valve, and the one-way valve controls the inlet and the outlet of liquid from the liquid inlet and the liquid outlet through valve cores in the one-way valve respectively;
the number of the connecting rods arranged on the crankshaft is three;
the mandrel is made of ceramic material;
a sealing gasket is arranged between the pump body and the mandrel;
the sealing gasket is a ceramic sealing sleeve;
the valve core of the one-way valve is made of stainless steel.
The original cam transmission mode is changed into the crankshaft connecting rod structure, so that the movable connecting piece is used, the operation is more stable, the abrasion is not easy, the transmission torque is large, the operation stroke is large, no far repose angle and no near repose angle exist in the stroke, the gapless operation is realized, and the stable consistency of liquid in the conveying process is ensured; the one-way valve core of the liquid inlet and the liquid outlet is made of stainless steel, so that abrasion is reduced, deformation is not easy, the service life of the one-way valve is prolonged, the high-abrasion-resistant ceramic sealing sleeve is used, the sealing is not easy to deform and abrade, and the service life is longer.
Drawings
FIG. 1 is a perspective view of the present utility model;
FIG. 2 is a front view of the present utility model;
FIG. 3 is a front view of the utility model with the front cover of the pump removed;
FIG. 4 is a cross-sectional view taken along the direction A of FIG. 3;
fig. 5 is a front perspective view of the pump body with the front cover removed.
Detailed Description
1-5, the high-speed pulse-free constant flow pump consists of a pump body 1, a motor 2, a one-way valve 3 and an infusion conveying structure 4, wherein the motor 2 is fixed on one side of the pump body 1 through a speed change mechanism, the output end of the speed change mechanism is connected with the input end of the infusion conveying structure 4, and the output end of the infusion conveying structure 4 is connected with the one-way valve 3; the infusion conveying structure 4 consists of a crankshaft 41, a connecting rod 42, a fixed bearing bush 43 and a mandrel 44, wherein the crankshaft 41 is rotatably fixed in the pump body 1 through the fixed bearing bush 43, one end of the crankshaft 41 is connected with the output end of the speed change mechanism, one end of the connecting rod 42 is arranged on the crankshaft 41 through a bearing 411, the other end of the connecting rod is connected with one end of the mandrel 44 through a connecting bearing 421, the other end of the mandrel 44 is accommodated in a sealed cavity formed by the pump body 1 and the one-way valve 3, and the one-way valve 3 controls the inlet and the outlet of liquid from the liquid inlet 31 and the liquid outlet 32 through valve cores in the one-way valve 3 respectively;
the number of the connecting rods 42 arranged on the crankshaft 41 is three;
the mandrel 54 is made of ceramic material;
a sealing gasket 541 is arranged between the pump body 1 and the mandrel 54;
the sealing gasket 541 is a ceramic sealing sleeve;
the valve core of the one-way valve 3 is made of stainless steel.
When the utility model is applied, an external power supply is connected, and the motor 2 drives the crankshaft 41 of the transfusion conveying structure 4 to rotate through the output end of the speed change mechanism; the non-concentricity of the crankshaft 41 drives the connecting rod 42 to swing up and down, so that the mandrel 44 connected with the connecting rod moves up and down in a sealed cavity formed by the pump body 1 and the one-way valve 3; when the connecting rod 42 descends, the valve core of the liquid inlet 31 of the one-way valve 3 is opened, the valve core of the liquid outlet 32 of the one-way valve 3 is closed, and liquid is pushed into the pump body 1; when the connecting rod 42 goes up, the valve core of the liquid inlet 31 of the one-way valve 3 is closed, the valve core of the liquid outlet 32 of the one-way valve 3 is opened, and liquid is pushed out of the liquid outlet 32 of the one-way valve 3, so that the effect of external stable transfusion is achieved, and a half-period constant current output is formed. When the connecting rod 42 is arranged at an angle of 120 degrees, the interval is reciprocated, the seamless switching is realized, and liquid is discharged from time to time, so that a pulsation-free liquid discharging mode is achieved, and the whole period of external constant-current transfusion is achieved.
And because the sealing mode is reinforced, the high-wear-resistance ceramic sleeve is added, the sealing guiding effect is enhanced, and the service life of the sealing element is longer.
Claims (6)
1. The high-speed pulse-free constant flow pump consists of a pump body, a motor, a one-way valve and an infusion conveying structure, wherein the motor is fixed on one side of the pump body through a speed change mechanism, the output end of the speed change mechanism is connected with the input end of the infusion conveying structure, and the output end of the infusion conveying structure is connected with the one-way valve; the method is characterized in that: the infusion conveying structure consists of a crankshaft, a connecting rod, a fixed bearing bush and a mandrel, wherein the crankshaft is rotatably and fixedly arranged in the pump body through the fixed bearing bush, one end of the crankshaft is connected with the output end of the speed change mechanism, one end of the connecting rod is arranged on the crankshaft through a bearing, the other end of the connecting rod is connected with one end of the mandrel through a connecting bearing, the other end of the mandrel is accommodated in a sealing cavity formed by the pump body and the one-way valve, and the one-way valve controls the inlet and the outlet of liquid from the liquid inlet and the liquid outlet through valve cores in the one-way valve.
2. The high-speed pulse-free constant flow pump of claim 1, wherein: the number of the connecting rods arranged on the crankshaft is three.
3. The high-speed pulse-free constant flow pump of claim 1, wherein: the mandrel is made of ceramic materials.
4. The high-speed pulse-free constant flow pump of claim 1, wherein: and a sealing gasket is arranged between the pump body and the mandrel.
5. The high-speed pulse-free constant flow pump of claim 4, wherein: the sealing gasket is a ceramic sealing sleeve.
6. The high-speed pulse-free constant flow pump of claim 1, wherein: the valve core of the one-way valve is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322139273.1U CN220522734U (en) | 2023-08-10 | 2023-08-10 | High-speed pulse-free constant flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322139273.1U CN220522734U (en) | 2023-08-10 | 2023-08-10 | High-speed pulse-free constant flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220522734U true CN220522734U (en) | 2024-02-23 |
Family
ID=89924721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322139273.1U Active CN220522734U (en) | 2023-08-10 | 2023-08-10 | High-speed pulse-free constant flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220522734U (en) |
-
2023
- 2023-08-10 CN CN202322139273.1U patent/CN220522734U/en active Active
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