CN218913075U - Liquid delivery pump - Google Patents
Liquid delivery pump Download PDFInfo
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- CN218913075U CN218913075U CN202222922475.9U CN202222922475U CN218913075U CN 218913075 U CN218913075 U CN 218913075U CN 202222922475 U CN202222922475 U CN 202222922475U CN 218913075 U CN218913075 U CN 218913075U
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Abstract
The utility model relates to a liquid transfer pump comprising: a cylinder; the piston is arranged in the cylinder body and divides the inner space of the cylinder body into a push-pull rod side space and a liquid side space; the push-pull rod side end cover is covered in the push-pull rod side space; the push-pull rod penetrates through the push-pull rod side end cover and then is connected with the piston; the actuating device is connected with the push-pull rod and drives the piston to slide through the push-pull rod so as to change the size of the liquid side space; the inlet valve and the outlet valve are one-way valves and are respectively connected with the liquid side space of the cylinder body; the inlet valve can enable liquid outside the cylinder body to flow into the liquid side space in a unidirectional mode, and the outlet valve can enable liquid in the liquid side space to flow out of the cylinder body in a unidirectional mode. The liquid delivery pump does not need to be provided with a gear and an impeller, has a simple structure and flexible and reliable action, is suitable for being used in a field environment and/or a corrosive environment, and has the advantages of low manufacturing cost, small size and portability.
Description
Technical Field
The present application relates to liquid transfer pumps, and more particularly to liquid transfer pumps used in field and/or corrosive environments.
Background
Depending on the environment of use, liquid delivery pumps generally include gear pumps and centrifugal self-priming pumps.
The gear pump is a rotary pump which conveys or pressurizes liquid by means of the change and movement of working volume formed between a pump cylinder and an engaged gear, and usually consists of two gears, a pump body and a front cover and a rear cover, wherein when the gears rotate, the volume of a space at the disengaging side of the gears is changed from small to large to form vacuum, the liquid is sucked, the volume of the space at the engaging side of the gears is changed from large to small, and the liquid is extruded into a pipeline. The suction chamber is separated from the discharge chamber by the meshing line of the two gears. The gear pump is required to be internally provided with gears, has a complex structure, is high in manufacturing cost, has a large size and is inconvenient to carry.
The self-priming pump works in that water is filled in the pump shell before the pump is started (or water is stored in the pump shell), after the self-priming pump is started, the impeller rotates at a high speed to enable water in the impeller channel to flow to the volute, at the moment, the inlet forms vacuum, the water inlet check valve is opened, and air in the suction pipe enters the pump and reaches the outer edge through the impeller channel. The self-priming pump needs to be internally provided with the impeller, and can work only by filling water into the pump shell, and has the advantages of complex structure, high manufacturing cost, larger size and inconvenience in carrying.
The information disclosed in the background section of the utility model is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The utility model provides a purpose provides a liquid delivery pump, it need not set up gear and impeller, does not need to fill in advance liquid just can work, simple structure, and the action is nimble reliable to be fit for using under open-air environment and/or corrosive environment, and low in manufacturing cost, the size is less, portable.
The present utility model provides a liquid transfer pump comprising: a cylinder; the piston is arranged in the cylinder body and divides the inner space of the cylinder body into a push-pull rod side space and a liquid side space; a push-pull rod side end cover, which is covered in the push-pull rod side space of the cylinder body; the push-pull rod penetrates through the push-pull rod side end cover and is connected to the piston; the actuating device is connected with the push-pull rod and drives the piston to slide through the push-pull rod so as to change the space size of the liquid side space; and inlet and outlet valves, which are one-way valves and are connected to the liquid side spaces of the cylinder, respectively; the inlet valve can enable liquid outside the cylinder body to flow into the liquid side space in a one-way mode, and the outlet valve can enable liquid in the liquid side space to flow out of the cylinder body in a one-way mode.
Preferably, a sealing ring is arranged between the piston and the cylinder body.
Preferably, the cylinder further comprises a liquid side end cover covering the liquid side space of the cylinder, and the inlet valve and the outlet valve are provided on the liquid side end cover.
Preferably, the inner surface of the cylinder is provided with a corrosion resistant coating.
Preferably, the liquid transfer pump further comprises an inlet liquid transfer tube for connection to the inlet valve and an outlet liquid transfer tube for connection to the outlet valve.
Preferably, the inlet liquid delivery pipe and the outlet liquid delivery pipe each comprise a pipe body and a support structure provided in an inner wall of the pipe body or provided inside the pipe body and abutting against an inner wall surface of the pipe body.
Preferably, the material of the pipe body is polytetrafluoroethylene, and the material of the supporting structure is steel.
Preferably, the support structure is provided in an inner wall of the pipe body, the support structure exhibiting a spiral shape.
Preferably, the actuation means comprises an electric motor.
Preferably, a sealing end cover is further arranged on the outer side of the push-pull rod side end cover, and the push-pull rod penetrates through the sealing end cover.
According to the actuating device disclosed by the utility model, the piston is driven to slide through the push-pull rod, so that the volume of the liquid side space is changed, the pressure is further changed, the inlet valve and the outlet valve with opposite guiding directions are combined, so that the liquid outside the cylinder body is sucked into the liquid side space, and the liquid in the liquid side space can be pushed out of the cylinder body, so that the purpose of conveying the liquid is achieved. The liquid delivery pump of the utility model can work without arranging gears and impellers and filling liquid in advance, has simple structure and flexible and reliable action, is suitable for being used in field environment and/or corrosive environment, and has low manufacturing cost, smaller size and convenient carrying.
The device of the present utility model has other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following embodiments, which are incorporated herein, and which together serve to explain the particular principles of the utility model.
Drawings
Fig. 1 shows a schematic structural view of a liquid delivery pump according to an embodiment of the present application.
Description of the reference numerals
A cylinder body 1; 2, a piston; a 21 seal ring; 3 an inlet valve; 4 a liquid side end cap; 5 an outlet valve; 6, a push-pull rod; 7, a push-pull rod side end cover; 8, sealing the end cover; 9 actuating means; 10 inlet liquid delivery tube; 11 outlet liquid delivery tube; a, a push-pull rod side space; and B a liquid side space.
It should be understood that the drawings are not necessarily to scale, presenting a simplified representation of various features illustrative of the basic principles of the utility model. The particular design features disclosed herein (including, for example, particular dimensions, orientations, locations, and shapes) will be determined in part by the particular application and environment in which they are to be used.
In the drawings, like numerals refer to the same or equivalent parts of the utility model throughout the several views of the drawings.
Detailed Description
Reference will now be made in detail to various embodiments of the utility model, examples of which are illustrated in the accompanying drawings and described below. While the utility model will be described in conjunction with the exemplary embodiments, it will be understood that the present description is not intended to limit the utility model to these exemplary embodiments. On the contrary, the utility model is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the utility model as defined by the appended claims.
Referring to fig. 1, the present application provides a liquid transfer pump comprising a cylinder 1, a piston 2, an inlet valve 3, an outlet valve 5, a push-pull rod 6, a push-pull rod side end cap 7 and an actuating means 9.
The cylinder 1 may be made of stainless steel, such as 316 stainless steel, which allows the cylinder to withstand acid corrosive liquids, such as tannic acid, polyphosphoric acid, oleic acid, and the like. The inner surface of the cylinder 1 may also be provided with a corrosion resistant coating to accommodate more acidic liquids.
The piston 2 is arranged in the cylinder body 1, and the piston 2 divides the inner space of the cylinder body 1 into a push-pull rod side space A and a liquid side space B. A sealing ring 21 can be arranged between the piston 2 and the cylinder body 1, so that the sealing effect is improved.
The push-pull rod side end cover 7 covers the push-pull rod side space A of the cylinder body 1.
The push-pull rod 6 passes through the push-pull rod side end cover 7 and is connected with the piston 2.
The actuating device 9 is connected to the push-pull rod 6, and the actuating device 9 drives the piston 2 to slide through the push-pull rod 6 so as to change the space size of the liquid side space B. The push-pull rod 6 can extend out from the central hole of the push-pull rod side end cover 7 of the push-pull rod side space A of the cylinder body, and the pressure state in the cylinder body 1 is changed through the push-pull piston 2 to provide power for the flow of liquid. The actuating means 9 may be, for example, an electric motor, a hydraulic cylinder or the like, which is preferably a diesel generator. Further, when the output of the actuator 9 is axial rotation, the actuator 9 may be connected to a motion converting mechanism (not shown in the drawings) to convert the axial rotation output from the actuator 9 into axial reciprocation.
The inlet valve 3 and the outlet valve 5 are both check valves and are connected to the liquid side space B of the cylinder 1, respectively.
Wherein the inlet valve 3 can make the liquid outside the cylinder 1 flow into the liquid side space B in one direction, and the outlet valve 5 can make the liquid in the liquid side space B flow out to the outside of the cylinder 1 in one direction.
The actuating device 9 drives the piston 2 to slide towards the push-pull rod side space A through the push-pull rod 6, the volume of the liquid side space B is increased, and the pressure is reduced, so that the liquid outside the cylinder body 1 is sucked into the liquid side space B in one way through the inlet valve 3. In this process, the outlet valve 5 is closed, and the liquid of the liquid-side space B is not caused to flow out to the outside of the cylinder 1.
The actuating means 9 drives the piston 2 to slide toward the liquid-side space B by the push-pull rod 6, the volume of the liquid-side space B becomes smaller, and the pressure becomes larger to push out the liquid in the liquid-side space B to the outside of the cylinder 1 through the outlet valve 5. In this process, the inlet valve 3 is closed, and the liquid outside the cylinder 1 is not sucked into the liquid-side space B.
That is, the actuating device 9 drives the piston 2 to slide through the push-pull rod 6, so that the volume of the liquid side space B is changed, the pressure is changed, the inlet valve 3 and the outlet valve 5 with opposite guiding directions are combined, so that the liquid outside the cylinder body 1 is sucked into the liquid side space B, the liquid in the liquid side space B can be pushed out of the cylinder body 1, and the purpose of conveying the liquid is achieved.
In an exemplary embodiment, a sealing end cover 8 can be arranged outside the push-pull rod side end cover 7, so that the sealing effect is enhanced, and the push-pull rod 6 passes through the sealing end cover 8.
In the exemplary embodiment, the liquid transfer pump further includes a liquid-side end cap 4, the liquid-side end cap 4 being capped at the liquid-side space B of the cylinder 1, and the inlet valve 3 and the outlet valve 5 being provided at the liquid-side end cap 4. Specifically, the liquid-side end cover 4 may be fixed at the liquid-side space B of the cylinder 1 by bolts.
In an exemplary embodiment, at least one of the push-pull rod side end cover 7 and the liquid side end cover 4 may be integrally formed with the cylinder 1.
In an exemplary embodiment, the above-described liquid transfer pump further includes an inlet liquid transfer pipe 10 and an outlet liquid transfer pipe 11, the inlet liquid transfer pipe 10 being adapted to be connected to the inlet valve 3, the outlet liquid transfer pipe 11 being adapted to be connected to the outlet valve 5, liquid outside the cylinder 1 being able to flow into the liquid side space B sequentially through the inlet liquid transfer pipe 10 and the inlet valve 3, and liquid in the liquid side space B being able to flow out to outside the cylinder 1 sequentially through the outlet valve 5 and the outlet liquid transfer pipe 11. The transfer pipe may be directly connected to the valve by a flange, or the transfer pipe may be connected to a corresponding position of the liquid-side end cap 4 by a flange, or the like.
The actuating means 9 drives the piston 2 to slide toward the push-pull rod side space a through the push-pull rod 6, and the volume of the liquid side space B becomes large and the pressure becomes small to suck the liquid in the inlet liquid delivery pipe 10 (i.e., the liquid outside the cylinder 1) into the liquid side space B unidirectionally through the inlet valve 3. In this process, the outlet valve 5 is closed, and the liquid in the liquid-side space B is not caused to flow out into the outlet liquid-delivery pipe 11 (i.e., outside the cylinder 1), nor is the liquid in the outlet liquid-delivery pipe 11 (i.e., the liquid outside the cylinder 1) caused to flow back into the liquid-side space B. I.e. to achieve inhalation of liquid.
The actuating means 9 drives the piston 2 to slide toward the liquid-side space B through the push-pull rod 6, the volume of the liquid-side space B becomes smaller, and the pressure becomes larger to push out the liquid in the liquid-side space B into the inlet-outlet liquid delivery pipe 11 (i.e., outside the cylinder 1) through the outlet valve 5. In this process, the inlet valve 3 is closed, and the liquid in the inlet liquid delivery pipe 10 (i.e., the liquid outside the cylinder 1) is not sucked into the liquid side space B, nor is the liquid in the liquid side space B caused to flow back into the inlet liquid delivery pipe 10 (i.e., the liquid outside the cylinder 1). I.e. to achieve the expression of liquid.
In an exemplary embodiment, the inlet liquid transfer tube 10 and the outlet liquid transfer tube 11 may include a tube body and a support structure disposed in an inner wall of the tube body or disposed inside the tube and abutting an inner wall surface of the tube body.
In an exemplary embodiment, the material of the tube body is polytetrafluoroethylene and the material of the support structure is steel. The kinds of materials of the tube body and the support structure are not limited thereto, and may be any form in the prior art as long as the above-described functions can be achieved.
In an exemplary embodiment, the support structure is disposed in an inner wall of the tube body, the support structure exhibiting a spiral shape. The support structure may also be of other shapes.
For convenience in explanation and accurate definition in the appended claims, the terms "upper", "lower", "inner", "outer", "upper", "lower", "upwardly", "downwardly", "front", "rear", "back", "inner", "outer", "inwardly", "outwardly", "inner", "outer", "outwardly", "forwardly", "rearwardly" are used to describe features of the exemplary embodiments with reference to the positions of such features as displayed in the figures.
The foregoing description of specific exemplary embodiments of the utility model has been presented for the purposes of illustration and description. The foregoing description is not intended to be exhaustive or to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable others skilled in the art to make and utilize the utility model in various exemplary embodiments and with various alternatives and modifications. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A liquid transfer pump, comprising:
a cylinder;
the piston is arranged in the cylinder body and divides the inner space of the cylinder body into a push-pull rod side space and a liquid side space;
a push-pull rod side end cover, which is covered in the push-pull rod side space of the cylinder body;
the push-pull rod penetrates through the push-pull rod side end cover and is connected to the piston;
the actuating device is connected with the push-pull rod and drives the piston to slide through the push-pull rod so as to change the space size of the liquid side space; and
inlet and outlet valves, which are one-way valves and are connected to the liquid side spaces of the cylinder, respectively;
the inlet valve can enable liquid outside the cylinder body to flow into the liquid side space in a one-way mode, and the outlet valve can enable liquid in the liquid side space to flow out of the cylinder body in a one-way mode.
2. The liquid transfer pump of claim 1, wherein a seal ring is disposed between the piston and the cylinder.
3. The liquid transfer pump of claim 2, further comprising a liquid side end cap that covers the liquid side space of the cylinder, the inlet valve and the outlet valve being disposed at the liquid side end cap.
4. A liquid transfer pump according to claim 3, wherein the inner surface of the cylinder is provided with a corrosion resistant coating.
5. The liquid transfer pump of claim 1, further comprising an inlet liquid transfer tube for connection to the inlet valve and an outlet liquid transfer tube for connection to the outlet valve.
6. The liquid transfer pump of claim 5, wherein the inlet liquid transfer tube and the outlet liquid transfer tube each comprise a tube body and a support structure disposed in or inside the tube body and abutting an inner wall surface of the tube body.
7. The liquid transfer pump of claim 6, wherein the material of the tube body is polytetrafluoroethylene and the material of the support structure is steel.
8. The liquid transfer pump of claim 6, wherein the support structure is disposed in an inner wall of the tube body, the support structure exhibiting a spiral shape.
9. The liquid delivery pump of claim 1, wherein the actuation means comprises a motor.
10. The liquid transfer pump of claim 1, wherein a seal end cap is further provided on an outer side of the push-pull rod side end cap, the push-pull rod passing through the seal end cap.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022208971691 | 2022-04-15 | ||
| CN202220897169 | 2022-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218913075U true CN218913075U (en) | 2023-04-25 |
Family
ID=86049798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222922475.9U Active CN218913075U (en) | 2022-04-15 | 2022-11-03 | Liquid delivery pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218913075U (en) |
-
2022
- 2022-11-03 CN CN202222922475.9U patent/CN218913075U/en active Active
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