CN211887508U - Full plastic oil pump - Google Patents
Full plastic oil pump Download PDFInfo
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- CN211887508U CN211887508U CN201922127695.0U CN201922127695U CN211887508U CN 211887508 U CN211887508 U CN 211887508U CN 201922127695 U CN201922127695 U CN 201922127695U CN 211887508 U CN211887508 U CN 211887508U
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Abstract
A full-plastic oil pump comprises a press head, screw threads, a locking cover, a main column, an auxiliary column, a piston, an elastic body, a body and a ball body, wherein the upper end of the auxiliary column is inserted into a lower connecting cavity of the main column and connected into a whole, a sealing sleeve is in sliding fit with a piston sealing cavity of the main column and is sealed in a liquid-gas mode, and the upper end of the sealing sleeve is in stepped fit with the piston sealing cavity to stop; the inner shoulder and the outer shoulder are matched and stopped; the lock cover and the piston are inserted into the body, the lock cover and the body are connected into a whole, the flange is embedded with a counter bore on the annular seat plate at the upper end of the body, the body is inserted into the screw threads, and the annular seat plate is embedded with an annular clamping groove in the screw threads; the main column penetrates through the elastic body, the main column is inserted into the inserting counter bore of the oil inlet channel, the lower end of the elastic body is matched with a top plate of the screw thread, and the upper end of the elastic body is matched with a top plate of the annular groove; the inner guide sleeve is in sliding fit with the inner surface of the outer ring wall plate of the annular groove. The lock cover is arranged in the screw teeth to prevent the lock cover from loosening from the screw teeth, and residual oil in the oil outlet channel can be sucked back to prevent oil dripping.
Description
Technical Field
The utility model relates to an injection pump.
Background
In the prior art, an oil injection pump comprises a press head, a thread, a locking cover, a main column, an auxiliary column, a piston, an elastic body, a body and a ball body, wherein the press head comprises an oil inlet channel, an oil outlet channel and an annular groove surrounding a lower opening of the oil inlet channel; the top plate of the screw thread is provided with a through hole and an inner guide sleeve surrounding the through hole; the piston is arranged on the auxiliary column, the auxiliary column is connected with the main column, and the upper end of the main column is inserted into the inserting-connecting counter bore at the lower part of the oil inlet channel. There are problems in that: the locking cover is easy to loosen.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: to provide an all-plastic oil pump which can effectively prevent a lock cover from coming loose and prevent oil dripping.
The utility model discloses a realize like this: a full-plastic oil pump comprises a press head, a screw thread, a locking cover, a main column, an auxiliary column, a piston, an elastic body, a body and a ball body, wherein the press head comprises an oil inlet channel, an oil outlet channel and an annular groove surrounding a lower opening of the oil inlet channel; the top plate of the screw thread is provided with a through hole and an inner guide sleeve surrounding the through hole; the piston is arranged on the auxiliary column, the auxiliary column is connected with the main column, and the upper end of the main column is inserted into the inserting-connecting counter bore at the lower part of the oil inlet channel; it is characterized in that: the lock cover is provided with a flange, and the inner cavity is provided with a guide hole, an inner shoulder and a guide cavity from top to bottom;
the main column comprises an oil outlet cavity, a partition plate, an oil guide hole, a lower connecting cavity and a piston sealing cavity, wherein the oil guide hole, the lower connecting cavity and the piston sealing cavity are arranged on the partition plate; an outer shoulder is arranged at the intersection of the lower connecting cavity and the piston sealing cavity;
the lower part of the auxiliary column is provided with a piston mounting position, and the lower part of the piston mounting position is provided with a piston stop seat;
the piston comprises a circular ring-shaped seat, a sealing sleeve arranged at the upper end of the circular ring-shaped seat and a hyperbolic piston sleeve body arranged on the radial direction of the circular ring-shaped seat,
the annular seat of the piston is in sliding fit with the piston mounting position, and the lower end of the annular seat is matched with the piston stop seat of the auxiliary column; the upper end of the auxiliary column is inserted into the lower connecting cavity of the main column and connected into a whole, the sealing sleeve is in sliding fit with the piston sealing cavity of the main column and is sealed in a liquid-gas manner, and the upper end of the sealing sleeve is in stepped fit with the piston sealing cavity to stop; the main column penetrates through the lock cover, the piston sealing cavity is in sliding fit with the guide cavity, and the inner shoulder and the outer shoulder are matched and stopped; the lock cover and the piston are inserted into the body, the lock cover and the body are connected into a whole, the flange is embedded with a counter bore on the annular seat plate at the upper end of the body, the body is inserted into the screw threads, and the annular seat plate is embedded with an annular clamping groove in the screw threads; the main column penetrates through the elastic body, the main column is inserted into the inserting counter bore of the oil inlet channel, the lower end of the elastic body is matched with a top plate of the screw thread, and the upper end of the elastic body is matched with a top plate of the annular groove; the inner guide sleeve is in sliding fit with the inner surface of the outer ring wall plate of the annular groove.
The all-plastic oil pump is characterized in that: the piston stop seat is arranged in the annular groove, the lower end of the annular seat of the piston is provided with an annular bulge, and the annular bulge is matched with the annular groove.
The all-plastic oil pump is characterized in that: the elastic body is a pressure spring made of plastic materials.
The all-plastic oil pump is characterized in that: the pressure spring is a tower-shaped pressure spring or a cylindrical spring, and the wire material of the pressure spring is hollow or solid.
The all-plastic oil pump is characterized in that: the elastic body comprises a top circular ring seat, a bottom circular ring seat, a middle circular body and a plurality of spiral elastic monomers, and is made of a plastic material;
at least two spiral elastic monomers are arranged between the top circular ring seat and the middle circular ring body as well as between the middle circular ring body and the bottom circular ring seat.
The all-plastic oil pump is characterized in that: the spiral elastic monomer between the bottom circular ring-shaped seat and the middle ring-shaped body is right-handed; the elastic body is made of plastic material;
the spiral elastic monomer between the top circular ring-shaped seat and the middle circular body is left-handed.
The all-plastic oil pump is characterized in that: the elastic body comprises a top circular ring seat, a bottom circular ring seat, a left-handed spring monomer and a right-handed spring monomer, and is made of plastic materials
The starting ends of the right-handed spring monomer and the left-handed spring monomer are intersected and opposite with the bottom circular ring seat, the tail ends of the right-handed spring monomer and the left-handed spring monomer are intersected and opposite with the end parts of the top circular ring seat, and the right-handed spring monomer and the left-handed spring monomer are intersected when rotating for 180 degrees every spiral.
The all-plastic oil pump is characterized in that: the sectional area of the wire of the right-handed spring monomer is larger than that of the left-handed spring monomer.
The utility model relates to a plastic oil pump, owing to adopt such structure, in the locking closure was equipped with the screw thread, prevented that locking closure and screw thread pine from taking off, can also make the residual oil resorption in the oil channel, prevent the oil drip.
Drawings
Fig. 1 is one of the cross-sectional views of the present invention.
Fig. 2 is a second cross-sectional view of the present invention.
Fig. 3 is a plan view of the main column of the present invention.
Fig. 4 is a perspective sectional view of the main column of the present invention.
Fig. 5 is a perspective view of the elastic body of the present invention.
Fig. 6 is a perspective view of the pressure spring of the present invention.
FIG. 7 is a perspective view of another compression spring of the present invention
Fig. 8 is one of perspective views of a second embodiment of the elastic body of the present invention.
Fig. 9 is a second perspective view of a second embodiment of the elastic body of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the all-plastic oil pump comprises a press head 1, a thread 2, a locking cover 3, a main column 4, an auxiliary column 5, a piston 6, an elastic body 7, a body 8 and a ball 9, wherein the press head 1 comprises an oil inlet channel 11, an oil outlet channel 12 and an annular groove 13 surrounding a lower opening of the oil inlet channel; the top plate of the thread 2 is provided with a through hole and an inner guide sleeve 21 surrounding the through hole; the piston 6 is arranged on the auxiliary column 5, the auxiliary column 5 is connected with the main column 4, and the upper end of the main column 4 is inserted into the inserting-connecting counter bore at the lower part of the oil inlet channel 11; the ball 9 is disposed in a one-way valve seat 81 at the lower end of the body 8.
The locking cover 3 is provided with a flange 31, and an inner cavity is provided with a guide hole 32, an inner shoulder 33 and a guide cavity 34 from top to bottom;
as shown in fig. 4, the main column 4 includes an oil outlet chamber 41, a partition plate 42, an oil guide hole 43 formed in the partition plate, a lower connecting chamber 44, and a piston seal chamber 45, wherein an axial oil guide groove 441 is formed in the lower connecting chamber 44, and a radial oil guide groove 442 formed in the partition plate 42 is communicated with the oil guide hole 43; the axial oil guide groove 441, the radial oil guide groove 442 and the oil guide hole 43 are communicated, and an outer shoulder portion 46 is arranged at the intersection of the lower connecting cavity 44 and the piston sealing cavity 45;
a piston mounting position 51 is arranged at the lower part of the auxiliary column 5, and a piston stop seat 52 is arranged at the lower part of the piston mounting position;
the piston 6 comprises a circular ring-shaped seat 61, a sealing sleeve 62 provided with an upper end of the circular ring-shaped seat and a hyperbolic piston sleeve body 63 arranged on the radial direction of the circular ring-shaped seat,
the annular seat 61 of the piston 6 is in sliding fit with the piston mounting position 51, a gap between the annular seat 61 and the piston mounting position 51 is an oil guide gap, and the lower end of the annular seat 61 is matched with the piston stop seat 52 of the auxiliary column 5; the upper end of the auxiliary column 5 is inserted into the lower connecting cavity 44 of the main column 4 and connected into a whole, the sealing sleeve 62 is in sliding fit with the piston sealing cavity 45 of the main column 4 and is sealed in a liquid-gas manner, and the upper end of the sealing sleeve 62 is matched with the step 451 of the piston sealing cavity 45 for stopping; the main column 4 penetrates through the lock cover 3, the piston sealing cavity 45 is in sliding fit with the guide cavity 34, and the inner shoulder 33 and the outer shoulder 46 are matched and stopped; the lock cover 3 and the piston 6 are inserted into the body 8, the lock cover 3 and the body 8 are connected into a whole, the flange 31 of the lock cover 3 is embedded with a counter bore on a circular base plate 82 at the upper end of the body 8, the body 8 is inserted into the screw thread 2, and the circular base plate 82 is embedded with a circular clamping groove in the screw thread 2; the main column 4 penetrates through the elastic body 7, the main column 4 is inserted into and connected with the insertion counter bore of the oil inlet channel 11 into a whole, the upper end of the main column 4 is provided with an annular bulge which is embedded with an annular groove in the insertion counter bore, the lower end of the elastic body 7 of the oil inlet channel 11 is matched with a top plate of the screw thread 2, and the upper end of the elastic body is matched with a top plate of the annular groove 13; the inner guide sleeve 21 is in sliding engagement with the inner surface of the outer annular wall of the annular groove 13. With this structure, the elastic body 7 is separated from the oil;
the sealing sleeve 62 is in sliding fit with the piston sealing cavity 45 of the main column 4 and is in liquid-gas sealing, the hyperbolic piston sleeve body 63 is in liquid-gas sealing with the inner wall of the body 8, the suction force is stable, and the oil outlet is stable;
the outer shoulder 46 of the main column 4 is matched with the inner shoulder 33 of the lock cover 3, so that the lock cover 3 can be prevented from being separated from the thread 2 when the press head 1 is held by hand;
the piston stop seat 52 is arranged in the annular groove 521, the lower end of the annular seat 61 of the piston 6 is provided with an annular protrusion 611, and the annular protrusion 611 is matched with the annular groove 521.
As shown in fig. 2 and 6, the elastic body 7 is a pressure spring made of a plastic material;
the pressure spring is a cylindrical pressure spring, and the wire material of the pressure spring is hollow or solid;
as shown in fig. 7, the compression spring is a tower-shaped compression spring, and the wire material of the compression spring is hollow or solid.
As shown in fig. 5, the elastic body 7 includes a top circular ring seat 71, a bottom circular ring seat 73, a middle circular ring body 73 and a plurality of spiral elastic single bodies 74, and the elastic body 7 is made of a plastic material;
two spiral elastic single bodies 74 are arranged between the top circular ring seat 71 and the middle circular ring body 73, and two spiral elastic single bodies 74 are arranged between the middle circular ring body 73 and the bottom circular ring seat 72;
the spiral elastic monomer 74 between the bottom circular ring-shaped seat 72 and the middle ring-shaped body 73 is right-handed;
the spiral elastic unit 74 between the top circular ring-shaped seat 71 and the middle ring-shaped body 73 is left-handed.
As shown in fig. 8 and 9, the elastic body 7 includes a top circular ring seat 71, a bottom circular ring seat 72, a left-handed spring unit 75 and a right-handed spring unit 76, and the elastic body 7 is made of a plastic material
The starting ends of the right-handed spring single body 76 and the left-handed spring single body 75 are intersected with the bottom circular ring seat 72 and are opposite, the tail ends of the right-handed spring single body 76 and the left-handed spring single body 75 are intersected with the top circular ring seat 71 and are opposite, and the ends of the right-handed spring single body 76 and the left-handed spring single body 75 are intersected when the right-handed spring single body 76 and the;
the sectional area of the wire of the right-handed spring single body 76 is larger than that of the left-handed spring single body 75.
When the utility model is used, in the state shown in figure 1, the press head 1 is pressed down, the elastic body 7 stores energy in a compression way, the press head 1, the main column 4, the auxiliary column 5 and the piston 6 move upwards, meanwhile, the piston 6 moves upwards relative to the main column 4, the sealing sleeve 62 is in sliding fit with the piston sealing cavity 45 of the main column 4, and the upper end of the sealing sleeve 62 is matched with the step 451 of the piston sealing cavity 45 to stop; the oil of the lower body 8 of the piston 6 enters the oil outlet chamber 41 through a gap between the annular seat 61 of the piston 6 and the piston mounting position 51 of the auxiliary column 5, the axial oil guide groove 441, the radial oil guide groove 442 and the oil guide hole 43; then flows out through the oil inlet channel 11 and the oil outlet channel 12;
when the pressing head 1 loses pressure, the main column 4, the auxiliary column 5 and the piston 6 move upwards under the action of the elastic body 7, the annular bulge 611 of the piston 6 and the annular groove 521 are in liquid-gas sealing, and oil remained in the oil outlet channel 12 is sucked back.
The utility model discloses plastic oil pump in the name indicates that all parts are made by plastic materials.
What has been described above is only a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and variations can be made without departing from the principle of the invention, which is also considered as the protection scope of the invention.
Claims (8)
1. A full-plastic oil pump comprises a press head, a screw thread, a locking cover, a main column, an auxiliary column, a piston, an elastic body, a body and a ball body, wherein the press head comprises an oil inlet channel, an oil outlet channel and an annular groove surrounding a lower opening of the oil inlet channel; the top plate of the screw thread is provided with a through hole and an inner guide sleeve surrounding the through hole; the piston is arranged on the auxiliary column, the auxiliary column is connected with the main column, and the upper end of the main column is inserted into the inserting-connecting counter bore at the lower part of the oil inlet channel; the method is characterized in that: the lock cover is provided with a flange, and the inner cavity is provided with a guide hole, an inner shoulder and a guide cavity from top to bottom;
the main column comprises an oil outlet cavity, a partition plate, an oil guide hole, a lower connecting cavity and a piston sealing cavity, wherein the oil guide hole, the lower connecting cavity and the piston sealing cavity are arranged on the partition plate; an outer shoulder is arranged at the intersection of the lower connecting cavity and the piston sealing cavity;
the lower part of the auxiliary column is provided with a piston mounting position, and the lower part of the piston mounting position is provided with a piston stop seat;
the piston comprises a circular ring-shaped seat, a sealing sleeve arranged at the upper end of the circular ring-shaped seat and a hyperbolic piston sleeve body arranged on the radial direction of the circular ring-shaped seat,
the annular seat of the piston is in sliding fit with the piston mounting position, and the lower end of the annular seat is matched with the piston stop seat of the auxiliary column; the upper end of the auxiliary column is inserted into the lower connecting cavity of the main column and connected into a whole, the sealing sleeve is in sliding fit with the piston sealing cavity of the main column and is sealed in a liquid-gas manner, and the upper end of the sealing sleeve is in stepped fit with the piston sealing cavity to stop; the main column penetrates through the lock cover, the piston sealing cavity is in sliding fit with the guide cavity, and the inner shoulder and the outer shoulder are matched and stopped; the lock cover and the piston are inserted into the body, the lock cover and the body are connected into a whole, the flange is embedded with a counter bore on the annular seat plate at the upper end of the body, the body is inserted into the screw threads, and the annular seat plate is embedded with an annular clamping groove in the screw threads; the main column penetrates through the elastic body, the main column is inserted into the inserting counter bore of the oil inlet channel, the lower end of the elastic body is matched with a top plate of the screw thread, and the upper end of the elastic body is matched with a top plate of the annular groove; the inner guide sleeve is in sliding fit with the inner surface of the outer ring wall plate of the annular groove.
2. The all-plastic oil pump according to claim 1, characterized in that: the piston stop seat is arranged in the annular groove, the lower end of the annular seat of the piston is provided with an annular bulge, and the annular bulge is matched with the annular groove.
3. The all-plastic oil pump according to claim 1, characterized in that: the elastic body is a pressure spring made of plastic materials.
4. The all-plastic oil pump according to claim 3, characterized in that: the pressure spring is a tower-shaped pressure spring or a cylindrical spring, and the wire material of the pressure spring is hollow or solid.
5. The all-plastic oil pump according to claim 1, characterized in that: the elastic body comprises a top circular ring seat, a bottom circular ring seat, a middle circular body and a plurality of spiral elastic monomers, and is made of a plastic material;
at least two spiral elastic monomers are arranged between the top circular ring seat and the middle circular ring body as well as between the middle circular ring body and the bottom circular ring seat.
6. The all-plastic oil pump according to claim 5, characterized in that: the spiral elastic monomer between the bottom circular ring-shaped seat and the middle ring-shaped body is right-handed;
the spiral elastic monomer between the top circular ring-shaped seat and the middle circular body is left-handed.
7. The all-plastic oil pump according to claim 1, characterized in that: the elastic body comprises a top circular ring seat, a bottom circular ring seat, a left-handed spring monomer and a right-handed spring monomer, and is made of a plastic material;
the starting ends of the right-handed spring monomer and the left-handed spring monomer are intersected and opposite with the bottom circular ring seat, the tail ends of the right-handed spring monomer and the left-handed spring monomer are intersected and opposite with the end parts of the top circular ring seat, and the right-handed spring monomer and the left-handed spring monomer are intersected when rotating for 180 degrees every spiral.
8. The all-plastic oil pump according to claim 7, characterized in that: the sectional area of the wire of the right-handed spring monomer is larger than that of the left-handed spring monomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922127695.0U CN211887508U (en) | 2019-12-02 | 2019-12-02 | Full plastic oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922127695.0U CN211887508U (en) | 2019-12-02 | 2019-12-02 | Full plastic oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211887508U true CN211887508U (en) | 2020-11-10 |
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ID=73299599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922127695.0U Active CN211887508U (en) | 2019-12-02 | 2019-12-02 | Full plastic oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211887508U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022257611A1 (en) * | 2021-06-11 | 2022-12-15 | 中山市联昌喷雾泵有限公司 | Column piston assembly and fully-plastic oil pump |
-
2019
- 2019-12-02 CN CN201922127695.0U patent/CN211887508U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022257611A1 (en) * | 2021-06-11 | 2022-12-15 | 中山市联昌喷雾泵有限公司 | Column piston assembly and fully-plastic oil pump |
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