CN213139757U - Press pump with improved piston - Google Patents
Press pump with improved piston Download PDFInfo
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- CN213139757U CN213139757U CN202021493840.3U CN202021493840U CN213139757U CN 213139757 U CN213139757 U CN 213139757U CN 202021493840 U CN202021493840 U CN 202021493840U CN 213139757 U CN213139757 U CN 213139757U
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- piston
- seat
- shaped
- sleeve
- central hole
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Abstract
The lower end of a connecting body part of the lock cover is in an inverted cone frustum shape; the lower part of the connecting rod part of the auxiliary column is provided with a plurality of axial bulges, the top of the connecting seat part is provided with an inverted trapezoidal or V-shaped annular groove, the piston is made of a soft rubber material and comprises an annular seat plate, a connecting sleeve and an annular piston body, and the lower end of the inner wall of a central hole of the annular seat plate is provided with a lower truncated cone-shaped part; the connecting rod part of the auxiliary column penetrates through the central hole of the annular seat plate, the upper part of the central hole is attached to the axial protrusion, the lower cone frustum-shaped part of the central hole is matched with the valve core seat, the connecting sleeve is inserted into the lower cavity of the main column, the lower end of the connecting body part of the locking cover is inserted into the upper end of the piston body, and the lower end of the piston body is in sliding fit with the main body and is sealed. The piston is made of soft rubber materials, is static relative to the main column and the auxiliary column, improves the sealing performance, has high stability, is free from abrasion and has long service life.
Description
Technical Field
The utility model relates to a press pump.
Background
In the prior art, a pressing pump comprises a pressing head, a locking cover, a screw thread, a body, a main column, an auxiliary column, a piston, a pressure spring and a glass ball, wherein the pressing head comprises a liquid inlet pipeline, a sleeve surrounding the liquid inlet pipeline and a liquid outlet channel; a top plate on the screw thread is provided with a guide sleeve; the main column comprises a liquid guide pipe part and a lower cavity body part, the upper part of the liquid guide pipe part is a liquid outlet pipe part, the lower part of the liquid guide pipe part is a liquid outlet connecting pipe part, and a plurality of axial bulges are arranged in the liquid outlet connecting pipe part; the auxiliary column comprises a connecting rod part, a piston seat part and a pressure spring seat arranged at the lower end of the piston seat part; the piston slides relative to the primary and secondary posts. There are problems in that: poor sealing performance, stability and short service life.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the improved piston pressing pump has high sealing performance and high stability.
The utility model discloses a realize like this: a press pump with an improved piston comprises a press head, a lock cover, a screw thread, a body, a main column, an auxiliary column and a piston, wherein the press head comprises a liquid inlet pipeline, a sleeve surrounding the liquid inlet pipeline and a liquid outlet channel; a top plate on the screw thread is provided with a guide sleeve; the main column comprises a liquid guide pipe part and a lower cavity body part, the upper part of the liquid guide pipe part is a liquid outlet pipe part, the lower part of the liquid guide pipe part is a liquid outlet connecting pipe part, and a plurality of axial bulges are arranged in the liquid outlet connecting pipe part; the auxiliary column comprises a connecting rod part, a piston seat part and a pressure spring seat arranged at the lower end of the piston seat part; it is characterized in that: the lower end of the connecting body part of the lock cover is in an inverted cone frustum shape;
the lower part of the connecting rod part of the auxiliary column is provided with a plurality of axial bulges, the top of the connecting seat part is provided with an inverted trapezoidal or V-shaped annular groove, and an inner annular wall plate of the inverted trapezoidal or V-shaped annular groove extends to the lower end of the connecting rod part and is connected with the lower ends of the axial bulges to form a valve core seat;
the piston is made of a soft rubber material and comprises a circular base plate, a connecting sleeve arranged on the upper surface of the circular base plate and a piston body surrounding the circular base plate, and a lower truncated cone-shaped part is arranged at the lower end of the inner wall of a central hole of the circular base plate;
the connecting rod part of the auxiliary column penetrates through the central hole of the annular seat plate, the upper part of the central hole is attached to the axial protrusion, the lower cone frustum-shaped part of the central hole is matched with the valve core seat, the connecting sleeve is inserted into the lower cavity of the main column, the lower end of the connecting body part of the locking cover is inserted into the upper end of the piston body, and the lower end of the piston body is in sliding fit with the main body and is sealed.
The improved piston pressing pump is characterized in that: the lower surface of the annular seat plate of the piston is provided with a plurality of radial bulges, and the radial outer sides of the radial bulges are connected with the piston body;
the upper end of the outer ring wall plate of the auxiliary column annular groove is matched with the radial protrusion.
The improved piston pressing pump is characterized in that: the connecting sleeve of the piston comprises a circular part positioned at the upper part and a sleeve cone frustum-shaped part positioned at the lower part;
the lower end of the inner wall of the lower cavity of the main column is provided with a cavity frustum-shaped part;
the circular part is in interference fit with the lower cavity, and the sleeve frustum-shaped part is attached to the cavity frustum-shaped part and is in liquid seal.
The improved piston pressing pump is characterized in that: and the intersection of the lower cone frustum-shaped part of the annular seat plate of the piston and the lower surface of the annular seat plate is rounded.
The utility model relates to an improve press pump of piston, owing to adopt such structure, the piston adopts the flexible glue material to make, and the piston is static for king post and auxiliary pillar, has improved sealing performance, and stability does not have wearing and tearing, long service life.
Drawings
Fig. 1 is a sectional view of the present invention in a pressed state.
Fig. 2 is a cross-sectional view of the present invention in a natural state.
Fig. 3 is a partially enlarged view of fig. 2.
Fig. 4 is a cross-sectional view of the piston of the present invention.
Fig. 5 is a partially enlarged view of fig. 4.
Fig. 6 is a perspective sectional view of the piston of the present invention.
Fig. 7 is one of exploded perspective views of the present invention.
Fig. 8 is a second exploded perspective view 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 press pump for improving the piston comprises a press head 1, a lock cover 2, a thread 3, a body 4, a main column 5, an auxiliary column 6, a piston 7, a pressure spring 8, a glass ball 9 and a buckle 10, wherein the press head 1 comprises a liquid inlet pipeline 1A, a sleeve 1B surrounding the liquid inlet pipeline and a liquid outlet channel 1C, the lock cover 2 comprises a flange 21, a connecting body part 22, an accommodating cavity 23 arranged on the body part and a guide hole 24 arranged at the upper part of the accommodating cavity; a guide sleeve 31 is arranged on a top plate on the screw thread 3; the main column 5 comprises a liquid guide pipe part 51 and a lower cavity part 52, the upper part of the liquid guide pipe part is a liquid outlet pipe part 511, the lower part of the liquid guide pipe part is a liquid outlet connecting pipe part 512, and a plurality of axial protrusions 513 are arranged in the liquid outlet connecting pipe part 512; the sub-column 6 includes a connecting rod portion 61, a piston seat portion 62, and a pressure spring seat provided at a lower end of the piston seat portion; the connecting rod part 61 of the auxiliary column 6 penetrates through the piston 7, the piston 7 is matched with the connecting rod part 61 and the piston seat part 62, the connecting rod part 61 is inserted into the liquid inlet connecting pipe part, and the annular groove on the connecting rod part 61 is embedded with the protrusion on the axial protrusion 513; the liquid guide pipe part 51 of the main column 5 passes through the guide hole 24 of the lock cover 2; the connecting body part 22 of the lock cover 2 is inserted into the body 4, the flange 21 is attached to the annular edge plate at the upper end of the body 4, the flange is attached to the top cover of the screw thread, and the liquid guide pipe part 51 is inserted into the liquid inlet pipeline 1A of the press head 1 and fixedly connected together; the liquid inlet channel 1A is in sliding fit with the guide sleeve 31;
the outer circumferential surface of the lower end of the connecting body part 22 of the lock cover 2 is in a reverse conical frustum shape;
the lower part of the connecting rod part 61 of the auxiliary column 6 is provided with a plurality of axial protrusions 63, the top of the connecting seat part 62 is provided with an inverted trapezoidal annular groove 64, and an inner annular wall plate of the inverted trapezoidal annular groove 64 extends to the lower end of the connecting rod part 61 and is connected with the lower end of the axial protrusions 63 to form a valve core seat 65; the annular groove 64 may also be V-shaped;
as shown in fig. 3, 4 and 5, the piston 7 is made of soft rubber material, such as TPU; the piston 7 comprises a circular base plate 71, a connecting sleeve 72 arranged on the upper surface of the circular base plate and a piston body 73 surrounding the circular base plate, and the lower end of the inner wall of a central hole of the circular base plate 71 is provided with a lower conical frustum-shaped part 711;
the connecting rod part 61 of the secondary column 6 penetrates through the central hole of the annular seat plate 71, the upper part of the central hole is attached to the axial bulge 63, the lower conical frustum part 711 of the central hole is matched with the valve core seat 65, the connecting sleeve 72 is inserted into the lower cavity 52 of the primary column 5 and fixedly connected together, the lower end of the connecting body part 22 of the lock cover 2 is inserted into the upper end of the piston body 73 in an interference connection mode, and the lower end of the piston body 73 is in sliding fit with and sealed with the body 4;
the buckle 10 includes a major arc sleeve portion 101 and an operating portion 102, and in a natural state, the major arc sleeve portion 101 is fitted over the guide sleeve 31 of the screw thread 3, and the upper end and the lower end of the major arc sleeve portion 101 are respectively fitted with the sleeve 1B of the button 1 and the top plate of the screw thread 3. When in use, the buckle is detached.
As a further improvement of the utility model: a plurality of radial protrusions 74 are arranged on the lower surface of the annular seat plate 71 of the piston 7, and the radial outer sides of the radial protrusions 74 are connected with the piston body 73;
the upper end of the outer annular wall of the annular groove 64 of the secondary post 6 engages with the radial projection 74.
The connecting sleeve 72 of the piston 7 comprises a circular part at the upper part and a sleeve cone frustum-shaped part 721 at the lower part;
the lower end of the inner wall of the lower cavity 52 of the main column 5 is provided with a cavity frustum-shaped part 521;
the circular part is in interference fit with the lower cavity 52, and the sleeve frustum-shaped part 721 is attached to the cavity frustum-shaped part 521 and is in liquid seal.
The lower conical frustum portion 711 of the annular seat plate 71 of the piston 7 is rounded 712 at the intersection with the lower surface of the annular seat plate 71.
In the state shown in fig. 2, the clip 10 is detached; pressing the press head 1, the piston 7 moves downwards along the inner wall of the body 4, and the liquid in the container enters the body 4; under the action of pressure, a flow guide gap is formed between the lower conical frustum-shaped part 711 on the annular seat plate 71 of the piston 7 and the valve core seat 65; the liquid enters the lower cavity 52 of the main column 5 through the gap between the piston seat part 62 and the piston 7 of the auxiliary column 6, the flow guide gap between the lower cone frustum-shaped part 711 and the valve core seat 65 and the gap between the axial protrusions 63, and then enters the liquid outlet pipe part 511 through the gap between two adjacent axial protrusions 513 on the liquid inlet connecting pipe 512; finally, the ink is sprayed out by the head 1.
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 (4)
1. A press pump with an improved piston comprises a press head, a lock cover, a screw thread, a body, a main column, an auxiliary column and a piston, wherein the press head comprises a liquid inlet pipeline, a sleeve surrounding the liquid inlet pipeline and a liquid outlet channel; a top plate on the screw thread is provided with a guide sleeve; the main column comprises a liquid guide pipe part and a lower cavity body part, the upper part of the liquid guide pipe part is a liquid outlet pipe part, the lower part of the liquid guide pipe part is a liquid outlet connecting pipe part, and a plurality of axial bulges are arranged in the liquid outlet connecting pipe part; the auxiliary column comprises a connecting rod part, a piston seat part and a pressure spring seat arranged at the lower end of the piston seat part; the method is characterized in that: the lower end of the connecting body part of the lock cover is in an inverted cone frustum shape;
the lower part of the connecting rod part of the auxiliary column is provided with a plurality of axial bulges, the top of the connecting seat part is provided with an inverted trapezoidal or V-shaped annular groove, and an inner annular wall plate of the inverted trapezoidal or V-shaped annular groove extends to the lower end of the connecting rod part and is connected with the lower ends of the axial bulges to form a valve core seat;
the piston is made of a soft rubber material and comprises a circular base plate, a connecting sleeve arranged on the upper surface of the circular base plate and a piston body surrounding the circular base plate, and a lower truncated cone-shaped part is arranged at the lower end of the inner wall of a central hole of the circular base plate;
the connecting rod part of the auxiliary column penetrates through the central hole of the annular seat plate, the upper part of the central hole is attached to the axial protrusion, the lower cone frustum-shaped part of the central hole is matched with the valve core seat, the connecting sleeve is inserted into the lower cavity of the main column, the lower end of the connecting body part of the locking cover is inserted into the upper end of the piston body, and the lower end of the piston body is in sliding fit with the main body and is sealed.
2. The improved piston pump as claimed in claim 1, wherein: the lower surface of the annular seat plate of the piston is provided with a plurality of radial bulges, and the radial outer sides of the radial bulges are connected with the piston body;
the upper end of the outer ring wall plate of the auxiliary column annular groove is matched with the radial protrusion.
3. The improved piston pump as claimed in claim 1, wherein: the connecting sleeve of the piston comprises a circular part positioned at the upper part and a sleeve cone frustum-shaped part positioned at the lower part;
the lower end of the inner wall of the lower cavity of the main column is provided with a cavity frustum-shaped part;
the circular part is in interference fit with the lower cavity, and the sleeve frustum-shaped part is attached to the cavity frustum-shaped part and is in liquid seal.
4. The improved piston pump as claimed in claim 1, wherein: and the intersection of the lower cone frustum-shaped part of the annular seat plate of the piston and the lower surface of the annular seat plate is rounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021493840.3U CN213139757U (en) | 2020-07-24 | 2020-07-24 | Press pump with improved piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021493840.3U CN213139757U (en) | 2020-07-24 | 2020-07-24 | Press pump with improved piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213139757U true CN213139757U (en) | 2021-05-07 |
Family
ID=75734038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021493840.3U Active CN213139757U (en) | 2020-07-24 | 2020-07-24 | Press pump with improved piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213139757U (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 |
-
2020
- 2020-07-24 CN CN202021493840.3U patent/CN213139757U/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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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A pressing pump with improved piston Effective date of registration: 20210715 Granted publication date: 20210507 Pledgee: China Co. truction Bank Corp Zhongshan branch Pledgor: ZHONGSHAN LEUNCHEONG DISPENSING PUMP Ltd. Registration number: Y2021980006261 |