CN111287927A - Liquid continuous quantitative conveying piston pump - Google Patents
Liquid continuous quantitative conveying piston pump Download PDFInfo
- Publication number
- CN111287927A CN111287927A CN202010152498.9A CN202010152498A CN111287927A CN 111287927 A CN111287927 A CN 111287927A CN 202010152498 A CN202010152498 A CN 202010152498A CN 111287927 A CN111287927 A CN 111287927A
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- China
- Prior art keywords
- end cover
- reversing
- flooding plug
- piston rod
- communicated
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B3/00—Machines or pumps with pistons coacting within one cylinder, e.g. multi-stage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/144—Adaptation of piston-rods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention relates to the field of fluid machinery. The purpose provides a liquid continuous type ration delivery piston pump, and this piston pump can carry to arbitrary viscosity liquid continuous ration, and other fillers can be mixed into to liquid inside, simple structure, long service life. The technical scheme is as follows: the utility model provides a liquid continuous type ration delivery piston pump which characterized in that: the liquid continuous quantitative conveying piston pump comprises a pump body with an upper end cover, a lower end cover and a cylinder body, a piston rod slidably positioned in the cylinder body, a reversing channel communicated with the upper end cover and the lower end cover, and a reversing assembly installed in the lower end cover, wherein the reversing assembly is respectively communicated with the reversing channel and the cylinder body, and the upper end cover and the lower end cover are respectively provided with a discharge hole and a feed hole.
Description
Technical Field
The invention relates to the field of fluid machinery, in particular to a continuous quantitative conveying piston pump in liquid conveying machinery, which can realize continuous quantitative conveying of liquid with any viscosity.
Background
In recent years, with the rapid development of the fields of global automobiles, electronics, buildings, energy sources, ships and the like, the demand quantity and the demand standard of liquid substances such as glue, lubricating oil, liquid coating and the like required in the fields are gradually improved, and liquid delivery pumps are rapidly developed; at present, common liquid delivery pumps in the market mainly comprise gear pumps, screw pumps and plunger pumps, wherein the gear pumps can realize continuous liquid delivery, but other solid fillers cannot be mixed in the liquid, the screw pumps cannot be used for high-viscosity fluid, the plunger pumps cannot realize non-pulsating continuous liquid delivery, and the use of the liquid delivery pumps is limited by factors such as viscosity of the delivered liquid, large liquid flow fluctuation during reversing delivery and the like; therefore, the delivery pump which has a simple structure and long service life and can continuously and quantitatively deliver liquid with any viscosity can conform to the development trend of various industries and meet the development requirements of the industries.
Disclosure of Invention
The invention aims to overcome the defects in the background technology and provide a liquid continuous quantitative conveying piston pump which can continuously and quantitatively convey liquid with any viscosity, can be doped with other fillers, and has the advantages of simple structure and long service life.
The invention adopts the following technical scheme: the utility model provides a liquid continuous type ration delivery piston pump which characterized in that: the liquid continuous quantitative conveying piston pump comprises a pump body with an upper end cover, a lower end cover and a cylinder body, a piston rod slidably positioned in the cylinder body, a reversing channel communicated with the upper end cover and the lower end cover, and a reversing assembly installed in the lower end cover, wherein the reversing assembly is respectively communicated with the reversing channel and the cylinder body, and the upper end cover and the lower end cover are respectively provided with a discharge hole and a feed hole.
The upper end cover and the lower end cover are both internally provided with cavities communicated with the cylinder body, the discharge port is communicated with the cavity of the upper end cover, and the feed port is communicated with the cavity of the lower end cover.
An upper flooding plug unit which can be in sliding fit with the piston rod is arranged at the cavity part of the upper end cover; and a lower flooding plug unit which can be in sliding fit with the cylinder body is arranged at the lower part of the piston rod.
The upward-flooding plug unit comprises an upward-flooding plug fixing seat, an upward-flooding plug fixing ring, an upward-flooding plug pressing seat and an upward-flooding plug pressing seat, wherein the upward-flooding plug fixing seat is coaxially arranged with the piston rod, the upward-flooding plug fixing ring is in sleeve joint fit with the piston rod in the axis direction of the piston rod, and the upward-flooding plug pressing seat tightly presses the upward-flooding plug fixing ring and the upward-flooding plug in the cylindrical cavity of the upward-flooding plug fixing seat.
The lower flooding plug unit comprises a lower flooding plug fixing ring and a lower flooding plug which are sequentially sleeved on the lower portion of the piston rod in the axis direction of the piston rod, and a lower flooding plug fixing seat which is used for fixing the lower flooding plug fixing ring and the lower flooding plug at the lower end portion of the piston rod.
The reversing assembly comprises a left reversing ball valve and a right reversing ball valve which are arranged in the cavity of the lower end cover and are communicated with each other; wherein, the left end outlet of the left reversing ball valve is sealed by a compression nut, the outlet of the circumferential surface is communicated with the reversing channel, and the right end inlet is communicated with the left end outlet of the right reversing ball valve; the right inlet of the reversing ball valve on the right side is communicated with the feed inlet, and the outlet of the circumferential surface is communicated with the cylinder body.
The reversing ball valve comprises a reversing sleeve, a reversing ball positioning seat, a positioning ball and a compression spring, wherein the reversing sleeve is horizontally arranged along the axis, the reversing ball positioning seat is positioned on the right end face of the reversing sleeve, the positioning ball is movably positioned in the reversing sleeve, and the compression spring pushes the positioning ball towards the direction of the reversing ball positioning seat.
Preferably, the cross-sectional area of the piston rod is 1/2 of the area of the bore in the cylinder body.
Preferably, the upper flooding plug and the lower flooding plug are both made of soft body materials.
The invention has the beneficial effects that: the invention has simple structure, stability and reliability, can continuously and quantitatively convey liquid with any viscosity, improves the working efficiency, can be doped with other fillers, does not influence the service life, and has small conveying volume fluctuation in two processes when the piston moves in two directions to convey the liquid. The continuous quantitative conveying of liquid substances such as glue, lubricating oil, liquid coating and the like in various industries is met, and meanwhile, the economic benefit can be effectively improved.
Drawings
Fig. 1 is a schematic front view of the present invention.
Fig. 2 is a schematic perspective view of the present invention.
Fig. 3 is a schematic sectional structure view of fig. 1.
Fig. 4 is a schematic perspective view of the piston rod of the present invention.
Figure 5 is an exploded view of the reversing assembly of the present invention.
Fig. 6 is a schematic diagram of the working state of the present invention.
FIG. 7 is a second schematic diagram of the working state of the present invention.
FIG. 8 is a third schematic diagram of the working state of the present invention.
FIG. 9 is a fourth schematic diagram of the working state of the present invention.
Detailed Description
The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following examples.
The continuous quantitative liquid conveying piston pump shown in fig. 1 comprises a pump body 1-2 with a cylinder body, a piston rod 2 slidably positioned in the cylinder body, an upper end cover 1-3 positioned at one end of the cylinder body and provided with a discharge port, a lower end cover 1-4 positioned at the other end of the cylinder body and provided with a feed port, a reversing channel 4 communicating the discharge port with the lower end cover, and a reversing assembly 3 installed in the lower end cover, wherein the reversing assembly is communicated with the reversing channel, the cylinder body and the feed port.
In the pump body shown in fig. 2, an upper end cover and a lower end cover are connected by a plurality of support columns 1-1 and are respectively fixed at the upper end and the lower end of a cylinder body; as shown in fig. 6, cavities are formed in the upper end cover and the lower end cover and communicated with the cylinder body, a discharge hole communicated with the inner cavity is formed in the left end of the upper end cover, and a feed hole communicated with the inner cavity is formed in the right end of the lower end cover.
The piston rod 2-1 shown in fig. 3 is in sliding fit with an upper flooding plug unit arranged on an upper end cover, and a lower flooding plug unit is arranged at the lower part of the piston rod.
As shown in fig. 3-4, in the flooding plug unit, a flooding plug fixing seat 2-2-1 is fixed on the upper part of the upper end cover, and a cylindrical cavity is arranged inside the flooding plug fixing seat; the upper flooding plug fixing ring 2-2-2 and the upper flooding plug 2-2-3 are sequentially arranged in the cylindrical cavity from top to bottom in the axial direction of the piston rod, and are sleeved on the piston rod to be in sliding fit with the piston rod; the upper flooding plug pressing seat 2-2-4 is fixed on the upper part of the upper flooding plug fixing seat, and the upper flooding plug fixing ring and the upper flooding plug are tightly pressed in the cylindrical cavity of the upper flooding plug fixing seat.
As shown in fig. 3-4, in the lower flooding plug unit, a lower flooding plug fixing ring 2-3-2 and a lower flooding plug 2-3-3 are fixed below a shaft shoulder 2-3-4 at the lower end part of a piston rod (the piston rod is sleeved from bottom to top along the axial direction of the piston rod), the lower flooding plug fixing seat 2-3-1 fixes the lower flooding plug fixing ring and the lower flooding plug at the lower end part of the piston rod (the diameter of a boss part of the lower flooding plug fixing seat is larger than that of the piston rod, and when a screw rod of the lower flooding plug fixing seat is screwed in and matched with a screw hole of the piston rod, the boss part presses and fixes the lower flooding plug fixing ring and the lower flooding plug at the lower end surface.
As shown in fig. 3, the reversing assembly comprises a left reversing ball valve 3-1 and a right reversing ball valve 3-1 which are arranged in the cavity of the lower end cover and are communicated with each other (a compression nut 3-2 is fixed on the left end screw of the cavity of the lower end cover through a sealing ring in a sealing manner, and the two reversing ball valves are compressed in the cavity of the lower end cover). The left end outlet of the left reversing ball valve is sealed by a compression nut, the circumferential surface outlets (as can be seen from figure 5, four circumferential surface outlets are provided in total) are communicated with the reversing channel, and the right end inlet is communicated with the left end outlet of the right reversing ball valve; the right inlet of the reversing ball valve is communicated with the feed inlet, and the circumferential outlets (as can be seen from figure 5, the total number of the four circumferential outlets) are communicated with the cylinder body.
As shown in figure 5, in the reversing ball valve, the axis of a reversing sleeve 3-1-1 is horizontally arranged, a reversing ball positioning seat 3-1-2 is positioned on the right end face of the reversing sleeve, a positioning ball 3-1-3 is movably positioned in the reversing sleeve, and a compression spring 3-1-4 pushes and pushes the positioning ball towards the direction of the reversing ball positioning seat.
Preferably, the upper flooding plug and the lower flooding plug are both made of soft materials; more preferably, the soft material is rubber.
Preferably, the cross-sectional area of the piston rod is 1/2 of the area of the bore in the cylinder.
The working principle of the invention is as follows: the invention can continuously and quantitatively convey liquid materials in the working process; the working principle of the present invention will be explained by selecting fig. 6-9;
the state shown in fig. 6: the piston rod is completely pushed into the pump body by an external driving component (not shown in the figure), the feed inlet keeps certain inlet pressure, the reversing ball in the reversing ball valve on the right side is pushed to the right end of the reversing ball valve under the action of a compression spring and liquid pressure in a cavity of the lower end cover and is tightly attached to the inner hole edge of the reversing ball positioning seat, and the feed inlet is closed; the reversing ball in the left reversing ball valve is pushed to the left end of the reversing ball valve under the action of liquid pressure in the cavity of the lower end cover; liquid materials are filled in the inner cavities of the upper end cover and the lower end cover, the reversing channel and the annular space between the piston rod and the inner wall of the cylinder body.
The state shown in fig. 7: when the piston rod is pulled out under the action of the external driving component, the liquid material in the annular space formed by the piston rod and the inner wall of the cylinder body is extruded upwards, and under the sealing action of the upper flooding plug, the liquid material is conveyed to the discharge hole through the inner cavity of the upper end cover (as shown by a liquid material conveying arrow in the cavity of the upper end cover); liquid materials pass through the reversing channel while being conveyed to the discharge hole, so that the internal pressure of the liquid in the reversing channel is increased, the reversing ball in the reversing ball valve on the left side is pushed to move towards the right end of the reversing ball valve and is tightly attached to the inner hole edge of the reversing ball positioning seat, the inlet at the right end of the reversing ball valve on the left side is closed, the liquid materials in the reversing channel cannot flow into the cylinder body through the reversing ball valve on the right side, and the liquid materials in the annular space between the piston cylinder and the inner wall of the cylinder body are completely conveyed to the; meanwhile, the space in the cylinder body is increased, the pressure of the liquid material is reduced, the inlet pressure of the feeding port pushes the reversing ball of the right reversing ball valve to move towards the left side of the reversing ball valve, the feeding port is opened, and the liquid material enters the cylinder body through the cavity of the lower end cover (the direction indicated by an arrow).
State shown in fig. 8: when the piston rod pushes the pump body under the action of the external driving component, the liquid pressure in the cylinder body is increased, the reversing ball in the right reversing ball valve is pushed to move to the right side of the reversing ball valve and is tightly attached to the inner hole edge of the reversing ball positioning seat, and the feeding hole is closed; the reversing ball of the left reversing ball valve moves to the left under the pushing of liquid pressure, the feeding hole of the left reversing ball valve is opened, and liquid materials in the cylinder body are conveyed to the discharging hole through the left reversing ball valve and the reversing channel (shown by a liquid material conveying arrow in the cavity of the lower end cover in fig. 8); because the discharge port is communicated with the annular space formed by the piston rod and the inner wall of the cylinder body through the inner cavity of the upper end cover, a part of the liquid material is conveyed into the annular space when being conveyed to the discharge port (as shown by a liquid material conveying arrow in the cavity of the upper end cover in fig. 8).
State shown in fig. 9: when the piston rod is fully advanced into the pump body by the external drive member, the piston pump returns to the condition shown in FIG. 6; thus, the liquid materials can be continuously conveyed by circularly reciprocating according to the states shown in figures 6 to 9.
From the above working processes, the state shown in fig. 7 conveys the material in the annular space between the piston rod and the inner wall of the cylinder body to the discharge hole, the state shown in fig. 8 conveys a part of the liquid material in the cylinder body to the discharge hole, and the other part of the liquid material is conveyed to the annular space between the piston rod and the inner wall of the cylinder body; since the cross-sectional area of the piston rod is 1/2 of the area of the inner hole in the cylinder body, and the volume of the annular space between the piston rod and the inner wall of the cylinder body is 1/2 of the volume of the cylinder body, 1/2 of the liquid in the cylinder body is conveyed to the discharge hole in fig. 8, and 1/2 of the liquid is conveyed to the annular space; in the working process in fig. 7, the liquid material occupying the cylinder volume 1/2 in the annular space is conveyed to the discharge hole, so that the working projects in fig. 7 and 8 can convey the same amount of liquid material, namely the invention can realize continuous and quantitative liquid conveying.
If the piston rod in fig. 7 and 8 is pulled out and pushed in at the same speed, the two working processes can convey quantitative materials at the same speed and at the same time, and the flow rates of the materials conveyed in the two working processes are the same, namely the invention can realize continuous equal-flow liquid conveying.
The invention has simple structure, can continuously and quantitatively deliver liquid with any viscosity at equal flow, has small volume fluctuation of the delivered liquid in two working processes of pulling out and pushing in the piston rod under the action of the left and right reversing ball valves and when the sectional area of the piston rod and the area of the inner hole of the cylinder body meet the specific relation, can also meet the liquid delivery in a large volume span range in a single working process, and can meet the requirements of industries such as automobiles, electronics, buildings, aerospace and the like on the continuous and quantitative delivery of the liquid with any viscosity.
Finally, it should be noted that the above-mentioned list is only a specific embodiment of the present invention. It is obvious that the present invention is not limited to the above embodiments, but many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.
Claims (9)
1. The utility model provides a liquid continuous type ration delivery piston pump which characterized in that: the liquid continuous quantitative conveying piston pump comprises a pump body (1-2) with an upper end cover (1-3), a lower end cover (1-4) and a cylinder body, a piston rod (2) slidably positioned in the cylinder body, a reversing channel (4) communicating the upper end cover with the lower end cover, and a reversing assembly (3) installed in the lower end cover, wherein the reversing assembly is respectively communicated with the reversing channel and the cylinder body, and the upper end cover and the lower end cover are respectively provided with a discharge hole and a feed hole.
2. The liquid continuous type quantitative delivery piston pump according to claim 1, characterized in that: the upper end cover and the lower end cover are both internally provided with cavities communicated with the cylinder body, the discharge port is communicated with the cavity of the upper end cover, and the feed port is communicated with the cavity of the lower end cover.
3. The liquid continuous type quantitative delivery piston pump according to claim 2, characterized in that: an upper flooding plug unit which can be in sliding fit with the piston rod is arranged at the cavity part of the upper end cover; and a lower flooding plug unit which can be in sliding fit with the cylinder body is arranged at the lower part of the piston rod.
4. The continuous liquid quantitative delivery piston pump according to claim 3, characterized in that: the upper flooding plug unit comprises an upper flooding plug fixing seat (2-2-1) of a cylindrical cavity which is coaxially arranged with the piston rod, an upper flooding plug fixing ring (2-2-2) and an upper flooding plug (2-2-3) which are sequentially in sleeve fit with the piston rod in the axial direction of the piston rod, and an upper flooding plug pressing seat (2-2-4) which tightly presses the upper flooding plug fixing ring and the upper flooding plug in the cylindrical cavity of the upper flooding plug fixing seat.
5. The liquid continuous type quantitative delivery piston pump according to claim 4, characterized in that: the lower flooding plug unit comprises a lower flooding plug fixing ring (2-3-2) and a lower flooding plug (2-3-3) which are sequentially sleeved on the lower portion of the piston rod in the axial direction of the piston rod, and a lower flooding plug fixing seat (2-3-1) which fixes the lower flooding plug fixing ring and the lower flooding plug at the lower end portion of the piston rod.
6. The liquid continuous type quantitative delivery piston pump according to claim 5, characterized in that: the reversing assembly comprises a left reversing ball valve (3) and a right reversing ball valve (3-1) which are arranged in a cavity of the lower end cover and are communicated with each other; wherein, the left end outlet of the left reversing ball valve is sealed by a compression nut (3-2), the outlet of the circumferential surface is communicated with the reversing channel, and the inlet of the right end is communicated with the outlet of the left end of the right reversing ball valve; the right inlet of the reversing ball valve on the right side is communicated with the feed inlet, and the outlet of the circumferential surface is communicated with the cylinder body.
7. The liquid continuous type quantitative delivery piston pump according to claim 6, characterized in that: the reversing ball valve comprises a reversing sleeve (3-1-1) with a horizontal axis, a reversing ball positioning seat (3-1-2) positioned on the right end face of the reversing sleeve, a positioning ball (3-1-3) movably positioned in the reversing sleeve and a compression spring (3-1-4) pushing the positioning ball towards the direction of the reversing ball positioning seat.
8. The liquid continuous type quantitative delivery piston pump according to claim 7, characterized in that: the cross-sectional area of the piston rod is 1/2 the area of the bore in the cylinder.
9. The liquid continuous type quantitative delivery piston pump according to claim 8, characterized in that: the upper flooding plug and the lower flooding plug are both made of soft materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010152498.9A CN111287927A (en) | 2020-03-06 | 2020-03-06 | Liquid continuous quantitative conveying piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010152498.9A CN111287927A (en) | 2020-03-06 | 2020-03-06 | Liquid continuous quantitative conveying piston pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111287927A true CN111287927A (en) | 2020-06-16 |
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ID=71025741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010152498.9A Pending CN111287927A (en) | 2020-03-06 | 2020-03-06 | Liquid continuous quantitative conveying piston pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111287927A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117365894A (en) * | 2023-11-08 | 2024-01-09 | 维多科流体技术(重庆)有限公司 | Metering pump |
-
2020
- 2020-03-06 CN CN202010152498.9A patent/CN111287927A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117365894A (en) * | 2023-11-08 | 2024-01-09 | 维多科流体技术(重庆)有限公司 | Metering pump |
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