CN212027997U - Liquid continuous quantitative conveying piston pump - Google Patents
Liquid continuous quantitative conveying piston pump Download PDFInfo
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- CN212027997U CN212027997U CN202020271979.7U CN202020271979U CN212027997U CN 212027997 U CN212027997 U CN 212027997U CN 202020271979 U CN202020271979 U CN 202020271979U CN 212027997 U CN212027997 U CN 212027997U
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- end cover
- reversing
- flooding plug
- piston rod
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Abstract
The utility model relates to a fluid machinery field. 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 utility model belongs to the technical field of fluid machinery and specifically relates to continuous type quantitative transport piston pump among liquid conveying machinery, this piston pump can realize the continuous quantitative transport to arbitrary viscosity liquid.
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 utility model relates to a simple structure, long service life, can be to the continuous ration transport's of arbitrary viscosity liquid delivery pump can comply with the development trend of each big trade, satisfy its development demand.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming not enough among the above-mentioned background art, providing a liquid continuous type ration transport piston pump, this piston pump can be to arbitrary viscosity liquid continuous ration transport, and other fillers can be mixed into to liquid inside, simple structure, long service life.
The utility model 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 utility model has the advantages that: the utility model discloses simple structure, reliable and stable can carry arbitrary viscosity liquid ration in succession, improves work efficiency, and can mix other packings in the liquid, does not influence life, the utility model discloses when piston two-way motion carried liquid, two processes carried the volume undulant less. 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 view of the structure 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.
Fig. 5 is an exploded view of the reversing assembly of the present invention.
Fig. 6 is a schematic view of the working state of the present invention.
Fig. 7 is a schematic view of the second working state of the present invention.
Fig. 8 is a third schematic view of the working state of the present invention.
Fig. 9 is a fourth schematic view 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 embodiments.
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 utility model discloses a theory of operation is: the utility model 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; the working process in figure 7 is that the liquid material that occupies cylinder volume 1/2 in the annular space is carried to the discharge gate, consequently figure 7 and figure 8 work engineering carry liquid material equivalent, promptly the utility model discloses can realize continuous quantitative transport liquid.
If the piston rod is pulled out and impeld at the uniform velocity with the same speed in fig. 7 and 8, then two working processes all carry quantitative material with the uniform velocity and with the same time, and the flow that two working processes carried the material is the same, promptly the utility model discloses can realize flow transport liquid such as in succession.
The utility model discloses simple structure, can reach flow transport arbitrary viscosity liquid in succession quantitatively, about the switching-over ball valve effect under and when piston rod sectional area and cylinder body inner hole area satisfy specific relation, the piston rod is pulled out and is impeld in two working processes and carry the liquid volume fluctuation less, the utility model discloses single working process also can satisfy the liquid transport of great volume span scope, can satisfy trades such as car, electron, building, aerospace and carry the demand of arbitrary viscosity liquid in succession quantitatively.
Finally, it should be noted that the above-mentioned embodiments illustrate only specific embodiments of the invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as 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 |
|---|---|---|---|
| CN202020271979.7U CN212027997U (en) | 2020-03-06 | 2020-03-06 | Liquid continuous quantitative conveying piston pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020271979.7U CN212027997U (en) | 2020-03-06 | 2020-03-06 | Liquid continuous quantitative conveying piston pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212027997U true CN212027997U (en) | 2020-11-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020271979.7U Active CN212027997U (en) | 2020-03-06 | 2020-03-06 | Liquid continuous quantitative conveying piston pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212027997U (en) |
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2020
- 2020-03-06 CN CN202020271979.7U patent/CN212027997U/en active Active
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