CN116753147B - peristaltic pump - Google Patents
peristaltic pump Download PDFInfo
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- CN116753147B CN116753147B CN202311012067.2A CN202311012067A CN116753147B CN 116753147 B CN116753147 B CN 116753147B CN 202311012067 A CN202311012067 A CN 202311012067A CN 116753147 B CN116753147 B CN 116753147B
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- hose
- peristaltic pump
- curvature section
- curvature
- extrusion device
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Abstract
The utility model relates to the technical field of pumping devices with peristaltic actions, in particular to a peristaltic pump. Peristaltic pump comprising: a hose and a rotary extrusion device for rotary extruding the hose; the hose is arranged on a path of rotary extrusion of the rotary extrusion device, the hose comprises a first curvature section and a second curvature section, the second curvature section is positioned between the first curvature sections, and the second curvature section and the first curvature section have different curvatures so that the rotary extrusion device cannot contact the second curvature section of the hose; and the hose fixing mechanism is used for clamping the second curvature section to fix the hose. The peristaltic pump provided by the utility model can enable the hose to run at a proper position, can reduce friction between the hose and the hose fixing mechanism, and prolongs the service life of the hose.
Description
Technical Field
The utility model relates to the technical field of pumping devices with peristaltic actions, in particular to a peristaltic pump.
Background
The peristaltic pump works in such a way that liquid in the tube is pushed forward by extruding an elastic hose, and the liquid is pumped by utilizing the partial vacuum formed when the hose is elastically restored.
However, the peristaltic pump still has some technical problems, which results in a peristaltic pump hose with a low service life. For example, in the chinese utility model with publication number CN208918797U, two ends of the hose are fixed by the connector clip, and other parts of the hose are directly disposed between the base and the pump cover, and the hose inevitably moves during the process of rotating and squeezing the hose by the roller. If the hose rubs against the fixing post or screw which is in contact with the hose during the movement, the outside of the hose is easily damaged by friction in a high-frequency cycle, eventually resulting in breakage of the hose, so that the life of the hose is not high.
Disclosure of Invention
In order to solve the technical problems or at least partially solve the technical problems, the utility model provides a peristaltic pump which can prolong the service life of a hose.
The present utility model provides a peristaltic pump comprising:
a hose;
a rotary extrusion device for rotary extruding the hose;
the hose is arranged on a path of rotary extrusion of the rotary extrusion device, the hose comprises a first curvature section and a second curvature section, the second curvature section is positioned between the first curvature sections, and the second curvature section and the first curvature section have different curvatures so that the rotary extrusion device cannot contact the second curvature section of the hose;
and a hose fixing mechanism for clamping the second curvature section to fix the hose so that the hose is held in a path rotationally extruded by the rotationally extrusion device.
Optionally, the spun extrusion apparatus includes rollers, the number of rollers and the spacing angle being such that at least two rollers are capable of simultaneously contacting the first curvature section of the hose.
Optionally, the rotary extrusion device comprises a rotary motor, a rotary base, a roller, a connecting shaft, a torsion spring and a connecting rod;
the rotating motor is connected to the rotating base to drive the rotating base to rotate;
the roller is movably connected to the rotating base through a connecting shaft;
a torsion spring is arranged between the roller and the rotating base to prevent the roller from rotating relative to the rotating base;
each roller is connected through a hard connecting rod, so that when one roller deflects or resets, the connecting rod drives the other rollers to deflect or reset.
Optionally, the inner pipe diameter of the second curvature section of the hose is larger than the inner pipe diameter of the first curvature section of the hose.
Optionally, the hose fixing mechanism comprises an air bag and a hard baffle, wherein the air bag is arranged on one side close to the second curvature section of the hose;
the peristaltic pump further comprises a flow detection device, wherein the flow detection device is arranged at the water outlet of the hose so as to detect the water outlet flow of the peristaltic pump;
when the flow detection device detects that the water outlet flow of the peristaltic pump is smaller than a preset flow value, the air inflation mechanism is controlled to inflate the air bag through the air hole so as to expand the air bag, and the second curvature section of the hose is extruded;
the hard baffle is arranged on one side of the air bag close to the rotary extrusion device so as to prevent the air bag from invading into the moving path of the rotary extrusion device when expanding.
Optionally, the gasbag includes a plurality of independent gasbag components of a whole that can function independently, and when peristaltic pump's play water flow was less than the flow value of predetermineeing, the control inflation mechanism is inflated and is gassing to every gasbag components of a whole that can function independently through the gas pocket in proper order to make every gasbag components of a whole that can function independently expand and shrink in proper order, in order to drive the foreign matter discharge in the second camber section.
Optionally, the peristaltic pump comprises a flow detection device, wherein the flow detection device is arranged at a water outlet of the peristaltic pump to detect the water outlet flow of the peristaltic pump, and when the water outlet flow is smaller than a preset flow value, the rotary extrusion device is made to rotate forward and backward to discharge the foreign matters in the second curvature section.
Compared with the prior art, the technical scheme provided by the utility model has the following advantages:
according to the peristaltic pump provided by the utility model, the hose fixing mechanism for clamping the middle part of the hose is arranged on the second curvature section of the hose, so that the middle part of the hose can be prevented from running, and the hose can be operated at a proper position. And because the second curvature section is not contacted with the rotary extrusion device, the phenomenon that the deformation part of the hose is clamped by the interaction between the roller and the edge of the hose fixing mechanism for clamping the hose after the hose is deformed by the rotary extrusion device is avoided. Meanwhile, the rotary extrusion device can only tear the hose at the first curvature section of the hose, so that the force for tearing the hose near the hose fixing mechanism by the rotary extrusion device can be reduced, the friction between the hose and the hose fixing mechanism is reduced, the friction damage probability of the hose shell is reduced, and the service life of the hose is prolonged.
Drawings
FIG. 1 is a schematic diagram of a peristaltic pump according to an embodiment of the present utility model;
FIG. 2 is one of the exploded views of a peristaltic pump according to an embodiment of the present utility model;
FIG. 3 is a second exploded view of a peristaltic pump according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of the working state of the peristaltic pump according to the embodiment of the present utility model;
FIG. 5 is a second schematic diagram of the peristaltic pump according to the embodiment of the present utility model;
FIG. 6 is a third schematic diagram of the peristaltic pump according to the embodiment of the present utility model;
FIG. 7 is a schematic diagram of a rotary extrusion device according to an embodiment of the present utility model;
FIG. 8 is a second schematic diagram of a rotary extrusion device according to an embodiment of the present utility model;
fig. 9 is a cross-sectional view taken along the direction A-A in fig. 8.
Wherein, 1, hose; 11. a first curvature section; 12. a second curvature section; 2. a rotary extrusion device; 21. a rotating electric machine; 22. rotating the base; 23. a roller; 24. a connecting shaft; 25. a torsion spring; 26. a connecting rod; 3. a hose fixing mechanism; 31. an air bag; 311. air holes; 312. the air bag is split; 32. a hard baffle; 33. a protrusion.
Detailed Description
The technical scheme of the utility model will be described below with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the utility model. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.
The peristaltic pump provided by the utility model is mainly applied to the field of sewage sampling and is used for sampling various types of sewage. In peristaltic pumps in the prior art, except for the inlet and outlet portions of the hose 1 are clamped by the clamp, the hose 1 in the rest portion is not generally clamped, so that when the rotary extrusion device 2 applies force to the hose 1, the hose 1 is easy to run, and a fixing column or a screw which is in contact with the hose 1 is easy to rub, so that the friction of the hose 1 is damaged, and the service life of the hose 1 is not long.
If the clamping device is simply added to clamp the middle position of the hose 1 on the basis of the prior art, when the hose 1 is extruded by the rotary extrusion device 2 to pass through the clamping device, the deformed and protruded part of the hose 1 frequently rubs against the edge of the clamping device because the hose 1 is already stressed to deform, even the roller 23 can be matched with the edge of the clamping device to clamp the deformed part of the hose 1, so that the hose 1 is damaged, and the service life of the hose 1 is not long.
To this end, as shown in fig. 1-6, the present utility model provides a peristaltic pump comprising: a hose 1 and a rotary extrusion device 2, said rotary extrusion device 2 being used for rotary extrusion of the hose 1. The hose 1 is arranged on a path of rotary extrusion of the rotary extrusion device 2, the hose 1 comprises a first curvature section 11 and a second curvature section 12, the second curvature section 12 is positioned between the first curvature sections 11, and the second curvature section 12 has different curvatures from the first curvature section 11 so that the rotary extrusion device 2 cannot contact the second curvature section 12 of the hose 1;
a hose fixing means 3, said hose fixing means 3 being adapted to clamp the second curvature section 12 to fix the hose 1 such that the hose 1 can always be located in the path of the rotary extrusion device 2.
According to the peristaltic pump provided by the utility model, the hose fixing mechanism 3 for clamping the middle part of the hose 1 is arranged on the second curvature section 12 of the hose 1, so that the middle part of the hose 1 can be prevented from running out, and the hose 1 can be operated at a proper position. And since the second curvature section 12 is not in contact with the spun extrusion device 2, it is avoided that the rollers 23 clamp off the deformed portion of the hose 1 in interaction with the edge of the hose fixing mechanism 3 holding the hose 1 after the spun extrusion device 2 deforms the hose 1. Meanwhile, the rotary extrusion device 2 can only pull the hose 1 at the first curvature section 11 of the hose 1, so that the force for pulling the hose 1 near the hose fixing mechanism 3 by the rotary extrusion device 2 can be reduced, the friction between the hose 1 and the hose fixing mechanism 3 is reduced, the probability of damage to the friction of the shell of the hose 1 is reduced, and the service life of the hose 1 is prolonged.
Referring to fig. 7 to 9, the rotary press device 2 includes a rotary motor 21, a rotary base 22, a roller 23, a connecting shaft 24, a torsion spring 25, and a link 26.
The rotary motor 21 is connected to the rotary base 22 to drive the rotary base 22 to rotate. Specifically, the driving shaft of the rotating motor 21 is cooperatively connected with the rotating base 22 through a D-shaped limiting hole, thereby realizing the rotation of the driving rotating base 22.
In particular, the number of rollers 23 and the spacing angle are such that at least two rollers 23 can simultaneously contact the first curvature section 11 of the hose 1 on both sides of the second curvature section 12. In the embodiment of the present utility model, the number of the rollers 23 is three, and each roller 23 is disposed at an angle of 60 degrees. In essence, the number of rollers 23 and the spacing angle are not limited to the specific values set forth in the embodiments of the present utility model, and may be set by the operator based on the actual curvatures and lengths of the first and second curvature sections 11 and 12.
The beneficial effects are that keeping two rollers 23 pressed against two sides of the hose 1 at all times can prevent liquid from flowing back when the rollers 23 pass through the second curvature section 12. Meanwhile, as the two rollers 23 are kept to be pressed against two sides of the hose 1 at any time, when the rollers 23 enter the first curvature section 11 from the second curvature section 12, the displacement between the hose 1 and the hose fixing mechanism 3 for clamping the hose 1 can be reduced, and the friction between the hose 1 and the hose fixing mechanism 3 is reduced.
The roller 23 is movably connected to the rotating base 22 through a connecting shaft 24. A torsion spring 25 is provided between the roller 23 and the rotating base 22 to prevent the roller 23 from rotating relative to the rotating base 22.
Specifically, the torsion spring 25 is sleeved on the connecting shaft 24, and is respectively connected with the roller 23 and the rotating base 22. Since the roller 23 is rotatably connected to the rotating base 22 through the connecting shaft 24, the roller 23 can deflect around the connecting shaft 24 and the rotating base 22 when the roller 23 encounters a torque greater than a predetermined torque.
The peristaltic pump has the beneficial effects that when the peristaltic pump is applied to water sampling equipment for collecting water samples of polluted water bodies, impurities such as stones are possibly mixed in the hose 1, the hose 1 is enlarged due to the impurities, when the hose 1 is enlarged due to the impurities, the roller 23 can deflect, the rotating diameter and the extruding distance are changed, and the hose 1 with the changing diameter can be effectively adapted, so that the hose 1 is not easy to be crushed.
More important, each roller 23 is connected through a hard connecting rod 26, so that when one roller 23 deflects or resets, the connecting rod 26 drives the rest rollers 23 to deflect or reset.
It should be noted that after the second curvature section 12 which is not contacted by the rotary extrusion device 2 is provided, when the peristaltic pump is applied to the water sampling device for collecting the water sample of the polluted water body, impurities such as stones may be mixed in the hose 1, and when stones enter the second curvature section 12 from the first curvature section 11, the force applied by the rotary extrusion device 2 to the impurities such as stones is suddenly weakened, and the impurities such as stones are easily blocked in the second curvature section 12.
To solve this new technical problem, each roller 23 provided by the present utility model is connected by a hard connecting rod 26.
The embodiments of the present utility model will be exemplified by the following advantageous effects.
For example, the rotation direction of the rotary press device 2 is set to be clockwise. Since the second curvature sections 12 are located between the first curvature sections 11, when the roller 23 pushes the stone from the inlet of the hose 1 through the first curvature sections 11 into the second curvature sections 12, the roller 23 contacting the stone will be deflected counterclockwise, and since the roller 23 is connected to other rollers 23 by the hard connecting rod 26, the other rollers 23 will also be deflected counterclockwise.
When the roller 23 in contact with the stone block pushes the stone block into the second curvature section 12, the roller 23 entering the second curvature section 12 is not subjected to additional torsion, the roller 23 can naturally reset clockwise under the action of the torsion spring 25, and the reset roller 23 can pull the rest rollers 23 to reset at the moment, so that the rest rollers 23 in contact with the first hose 1 generate a small displacement in a transient needle direction, the flow velocity of water in the clockwise advancing direction in the hose 1 is improved, and the stone block can more easily leave the second curvature section 12. The particular construction of the rotary extrusion device 2 provided in the examples thus reduces the likelihood of rocks from clogging the second curvature section 12.
In particular, in the present embodiment, the inner diameter of the second curvature section 12 of the hose 1 is larger than the inner diameter of the first curvature section 11 of the hose 1.
The beneficial effects of the device are that impurities such as stones can more easily pass through the second curvature section 12 by arranging a relatively large inner pipe diameter in the second curvature section 12, so that the probability of blocking the impurities such as stones on the second curvature section 12 can be reduced.
In the embodiment of the utility model, the peristaltic pump further comprises a flow detection device, and the flow detection device is arranged at the water outlet of the hose 1 to detect the water outlet flow of the peristaltic pump.
The flow detection device is an electromagnetic flowmeter on the market, not shown in the figure, and is directly arranged at the water outlet of the hose 1.
In particular, in the present embodiment, the hose fixing mechanism 3 comprises an air bag 31 and a hard baffle 32, the air bag 31 being arranged on the side close to the second curvature section 12 of the hose 1.
In particular, the pump cap also has a projection 33 which cooperates with the bladder 31, the projection 33 of the pump cap cooperating with the bladder 31 to clamp the second curvature section 12 of the hose 1 when the pump cap is closed.
The air bag 31 is provided with an air hole 311, and when the flow detection device detects that the water outlet flow of the peristaltic pump is smaller than a preset flow value, the air inflation mechanism is controlled to inflate the air bag 31 through the air hole 311 so that the air bag 31 is inflated, and the second curvature section 12 of the hose 1 is extruded.
Specifically, the inflation mechanism is a dc speed-regulating air pump, not shown in the figure, and is generally mounted on the top of the pump cover, and is connected to the air hole 311 of the air bag 31 through a hollow air pipe. In this embodiment, the air pipe is inserted into the protrusion 33 engaged with the air bag 31 to connect the air pump with the air hole 311 of the air bag 31, which is not shown in the drawing.
The peristaltic pump has the advantages that when the flow detection device detects that the water outlet flow of the peristaltic pump is abnormal, it can be stated that foreign matters such as stones are blocked in the second curvature section 12, and at the moment, the air bag 31 is inflated to form a similar action of pinching the hose 1, so that the water flow in the hose 1 is accelerated, and the foreign matters such as stones in the second curvature section 12 are driven to move out.
The hard barrier 32 is provided on a side of the balloon 31 close to the rotary extrusion device 2 to prevent intrusion into the movement path of the rotary extrusion device 2 when the balloon 31 is inflated.
In a preferred embodiment, the air bag 31 includes a plurality of independent air bag split bodies 312, and when the water outlet flow rate of the peristaltic pump is smaller than the preset flow rate value, the air inflation mechanism is controlled to sequentially inflate and deflate each air bag split body 312 through the air hole 311, so that each air bag split body 312 sequentially expands and contracts to drive the foreign matters in the second curvature section 12 to be discharged.
The peristaltic pump has the advantages that whether the water outlet flow is normal can be judged by setting the preset flow value as the normal water outlet flow, and when the flow detection device detects that the water outlet flow of the peristaltic pump is abnormal, the peristaltic pump sequentially expands through different air bag split bodies 312 to form peristaltic action so as to drive foreign matters such as stones in the hose 1 to move out from the second curvature section 12.
In the present embodiment, when the outflow rate is smaller than the preset flow rate value, the foreign matter in the second curvature section 12 can also be discharged by controlling the forward rotation and the reverse rotation of the rotary extrusion device 2.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In addition, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Moreover, in the description of the embodiments of the present utility model, unless otherwise indicated, "/" means or, for example, a/B may mean a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. Also, in the description of the embodiments of the present utility model, "plurality" means two or more than two.
The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. Peristaltic pump, characterized in that it comprises:
a hose;
a rotary extrusion device for rotary extruding the hose;
the hose is arranged on a path of rotary extrusion of the rotary extrusion device, the hose comprises a first curvature section and a second curvature section, the second curvature section is positioned between the first curvature sections, and the second curvature section and the first curvature section have different curvatures so that the rotary extrusion device cannot contact the second curvature section of the hose;
a hose fixing mechanism for clamping the second curvature section to fix the hose so that the hose is held on a path rotationally extruded by the rotationally extrusion device, the hose fixing mechanism including an air bag provided at a side close to the second curvature section of the hose and a hard barrier;
the peristaltic pump further comprises a flow detection device, wherein the flow detection device is arranged at the water outlet of the hose so as to detect the water outlet flow of the peristaltic pump;
when the flow detection device detects that the water outlet flow of the peristaltic pump is smaller than a preset flow value, the air inflation mechanism is controlled to inflate the air bag through the air hole so as to expand the air bag, and the second curvature section of the hose is extruded;
the hard baffle is arranged on one side of the air bag close to the rotary extrusion device so as to prevent the air bag from invading into the moving path of the rotary extrusion device when expanding.
2. Peristaltic pump according to claim 1, characterized in that the rotary squeezing means comprise rollers, the number of which and the spacing angle are such that at least two rollers can simultaneously contact the first curvature section of the hose.
3. The peristaltic pump of claim 1 wherein the rotary extrusion device comprises a rotary motor, a rotary base, rollers, a connecting shaft, a torsion spring, and a connecting rod;
the rotating motor is connected to the rotating base to drive the rotating base to rotate;
the roller is movably connected to the rotating base through a connecting shaft;
a torsion spring is arranged between the roller and the rotating base to prevent the roller from rotating relative to the rotating base;
each roller is connected through a hard connecting rod, so that when one roller deflects or resets, the connecting rod drives the other rollers to deflect or reset.
4. Peristaltic pump according to claim 1, characterized in that the inner tube diameter of the second curvature section of the hose is larger than the inner tube diameter of the first curvature section of the hose.
5. The peristaltic pump of claim 1 wherein the bladder includes a plurality of independent bladder segments, and when the flow rate of the outlet water from the peristaltic pump is less than a predetermined flow rate value, the inflation mechanism is controlled to sequentially inflate and deflate each bladder segment through the air holes, such that each bladder segment sequentially expands and contracts to drive the expulsion of foreign matter from the second curvature segment.
6. The peristaltic pump of claim 1 wherein the peristaltic pump includes a flow detection device disposed at a water outlet of the peristaltic pump to detect a water flow rate of the peristaltic pump, and when the water flow rate is less than a predetermined flow rate value, the rotary extrusion device is rotated forward and reverse to expel the foreign matter in the second curvature segment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311012067.2A CN116753147B (en) | 2023-08-11 | 2023-08-11 | peristaltic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311012067.2A CN116753147B (en) | 2023-08-11 | 2023-08-11 | peristaltic pump |
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| Publication Number | Publication Date |
|---|---|
| CN116753147A CN116753147A (en) | 2023-09-15 |
| CN116753147B true CN116753147B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311012067.2A Active CN116753147B (en) | 2023-08-11 | 2023-08-11 | peristaltic pump |
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| CN (1) | CN116753147B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208763858U (en) * | 2018-06-28 | 2019-04-19 | 汕头鱼露厂有限公司 | A kind of Bidirectional-squeezing formula peristaltic pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7645127B2 (en) * | 2003-04-29 | 2010-01-12 | Loren Hagen | Pulseless peristaltic pump |
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- 2023-08-11 CN CN202311012067.2A patent/CN116753147B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208763858U (en) * | 2018-06-28 | 2019-04-19 | 汕头鱼露厂有限公司 | A kind of Bidirectional-squeezing formula peristaltic pump |
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| Publication number | Publication date |
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| CN116753147A (en) | 2023-09-15 |
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