CN214811870U - Push type liquid pump core - Google Patents
Push type liquid pump core Download PDFInfo
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- CN214811870U CN214811870U CN202121224346.1U CN202121224346U CN214811870U CN 214811870 U CN214811870 U CN 214811870U CN 202121224346 U CN202121224346 U CN 202121224346U CN 214811870 U CN214811870 U CN 214811870U
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- valve rod
- pump body
- valve
- piston
- fixing part
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- 239000007788 liquid Substances 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 239000000839 emulsion Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Abstract
The utility model discloses a push type liquid pump core belongs to according to press pump technical field. A press type liquid pump core comprises a valve rod, a spring, a fixing part, a pump body, a piston, a valve needle and a valve plate; the lower end of the valve rod extends into the pump body; the valve needle is arranged in the valve rod and fixedly connected with the valve rod into a whole; the fixing part is clamped between the valve rod and the pump body, and dynamic sealing performance is realized between the valve rod and the fixing part; the spring is sleeved outside the valve rod and is positioned between the inner side of the upper end part of the valve rod and the fixing part; the piston is connected in the pump body in a sliding manner, dynamic sealing performance is achieved between the piston and the pump body, and the piston is located between the lower end of the fixing part and the inner side of the lower end part of the valve needle; the pump body lower extreme is equipped with the feed inlet, and in the feed inlet was located to the valve block, can be so that the valve rod press with the in-process of return, the difficult relative pump body of fixed part produced the displacement for the use of valve rod is more stable.
Description
Technical Field
The utility model relates to a according to press pump technical field, more specifically say, relate to a push type liquid pump core.
Background
The push type liquid pump core comprises a vacuum pump core and an emulsion pump core, and the emulsion is atomized and sprayed out by mainly utilizing the principle of a push type micro sprayer.
The pump core mainly comprises the valve rod, the needle, the pump body, structures such as valve block, in the in-service use process, realize the fixed of valve rod and pump body through increasing a middle fixed knot structure between the valve rod and the pump body, make the valve rod reciprocate relatively to the pump body, but press the valve rod and loosen the in-process of valve rod, certain frictional force has between valve rod and the middle fixed knot structure, and then loosen behind the valve rod, the valve rod carries out partial distance with middle fixed knot structure because of frictional force between the two easily when shifting up relatively to the pump body, make and produce between middle fixed knot structure and the pump body and shift, influence the subsequent normal operation of pressing of valve rod easily.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
To the problem that exists among the prior art, the utility model aims to provide a push type liquid pump core, it can be so that the valve rod press with the in-process of return, the difficult relative pump body of fixed part produces the displacement for the use of valve rod is more stable.
2. Technical scheme
In order to solve the above problems, the utility model adopts the following technical proposal.
A press type liquid pump core comprises a valve rod, a spring, a fixing part, a pump body, a piston, a valve needle and a valve plate;
the lower end of the valve rod extends into the pump body;
the valve needle is arranged in the valve rod and fixedly connected with the valve rod into a whole;
the fixing part is clamped between the valve rod and the pump body, and dynamic sealing performance is realized between the valve rod and the fixing part;
the spring is sleeved outside the valve rod and is positioned between the inner side of the upper end part of the valve rod and the fixing part;
the piston is connected in the pump body in a sliding manner, dynamic sealing performance is achieved between the piston and the pump body, and the piston is located between the lower end of the fixing part and the inner side of the lower end part of the valve needle;
the lower end of the pump body is provided with a feed inlet, and the valve block is arranged in the feed inlet.
Furthermore, the fixing part comprises a fixing seat, a limiting block and a positioning bulge; the fixed seat is clamped between the valve rod and the pump body; the limiting block is arranged at the outer end of the fixed seat close to the upper side, the limiting block and the fixed seat are fixedly connected into a whole, and the lower end of the limiting block is contacted with the upper end of the pump body; at least one positioning bulge is fixedly arranged at the outer end of the fixed seat; the inner wall of the pump body is provided with at least one positioning groove matched with the positioning bulge; a limiting cavity for accommodating the spring is formed between the upper end of the limiting block and the upper end of the fixing seat.
Further, the upper end of the spring is in contact with the inner side of the upper end part of the valve rod, and the lower end of the spring is in contact with the inner wall of the limiting cavity.
Further, the upper end of the piston is in contact with the lower end of the fixing seat, and the lower end of the piston is in contact with the inner side of the lower end of the valve needle.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages of:
this scheme (one) can be so that the valve rod press with the in-process of return, the difficult relative pump body of fixed part produces the displacement for the use of valve rod is more stable.
And secondly, through the matching action between the positioning bulges and the positioning grooves, the fixed seat is not easy to displace in the vertical direction in the pump body.
(III) the fixed part is difficult for producing the ascending displacement in upper and lower direction in the pump body, can make the use of spring more stable, and the valve rod is pressed to the in-process of loosening, and the return that the valve rod can be more smooth and easy.
Drawings
Fig. 1 is a schematic sectional structure of the present invention;
fig. 2 is a schematic structural view of a fixing portion of the present invention;
fig. 3 is a schematic view of a part of the structure of the pump body of the present invention.
The reference numbers in the figures illustrate:
the valve comprises a valve rod 1, a spring 2, a fixing part 3, a fixing seat 3-1, a limiting block 3-2, a limiting cavity 3-3, a positioning bulge 3-4, a pump body 4, a positioning groove 4-1, a piston 5, a valve needle 6 and a valve plate 7.
Detailed Description
Referring to fig. 1-2, a push type liquid pump cartridge includes a valve rod 1, a spring 2, a fixing portion 3, a pump body 4, a piston 5, a valve needle 6 and a valve plate 7.
The lower end of the valve rod 1 extends into the pump body 4.
The valve needle 6 is arranged in the valve rod 1 and fixedly connected with the valve rod 1 into a whole, a center hole of the valve needle 6 is concentric with a center hole of the valve rod 1, and after the valve rod 1 is pressed to loosen the valve rod 1, liquid in an external bottle body is sprayed out through the valve needle 6 and the center holes in the valve rod 1.
The fixing part 3 is clamped between the valve rod 1 and the pump body 4, and dynamic sealing performance is realized between the valve rod 1 and the fixing part 3; the fixing part 3 comprises a fixing seat 3-1, a limiting block 3-2 and a positioning bulge 3-4; the fixed seat 3-1 is clamped between the valve rod 1 and the pump body 4; the limiting block 3-2 is arranged at the outer end of the fixed seat 3-1 close to the upper side, the limiting block 3-2 is fixedly connected with the fixed seat 3-1 into a whole, and the lower end of the limiting block 3-2 is contacted with the upper end of the pump body 4; at least one positioning bulge 3-4 is fixedly arranged at the outer end of the fixed seat 3-1; the inner wall of the pump body 4 is provided with at least one positioning groove 4-1 matched with the positioning bulge 3-4, namely the positioning bulge 3-4 is clamped in the positioning groove 4-1, so that the fixed seat 3-1 is not easy to displace in the vertical direction in the pump body 4; a limiting cavity 3-3 for accommodating the spring 2 is formed between the upper end of the limiting block 3-2 and the upper end of the fixed seat 3-1.
The spring 2 is sleeved outside the valve rod 1, and the spring 2 is positioned between the inner side of the upper end part of the valve rod 1 and the fixing part 3; the upper end of the spring 2 is contacted with the inner side of the upper end part of the valve rod 1, and the lower end of the spring 2 is contacted with the inner wall of the limiting cavity 3-3.
The piston 5 is connected in the pump body 4 in a sliding way, dynamic sealing performance exists between the piston 5 and the pump body 4, and the piston 5 is positioned between the lower end of the fixing part 3 and the inner side of the lower end part of the valve needle 6; the upper end of the piston 5 is contacted with the lower end of the fixed seat 3-1, and the lower end of the piston 5 is contacted with the inner side of the lower end part of the valve needle 6.
The lower end of the pump body 4 is provided with a feeding hole, and the valve plate 7 is arranged in the feeding hole.
The position of the pump body 4 corresponding to the piston 5 is provided with a vent hole, and the liquid inlet of the pump body 4 is provided with a suction pipe, so that the emulsion pump with the suction pipe can be formed.
The valve rod 1 is pressed downwards, so that the valve rod 1 drives the valve needle 6 to move downwards along the inner wall of the fixed seat 3-1, the spring 2 is compressed, and the fixed seat 3-1 is not easy to move downwards in the pump body 4 along with the valve rod 1 under the matching action between the limiting block 3-2 and the upper end surface of the pump body 4; when the valve rod 1 is pressed down to a small distance, the valve rod 1 starts to contact the piston 5 and drives the piston 5 to move downwards in the pump body 4, so that the interior of the pump body 4 is compressed, and under the condition that liquid exists in the pump body 4, the liquid in the pump body 4 can be discharged through the valve needle 6 and the interior of the valve rod 1; the valve rod 1 is loosened, the valve rod 1 is reset under the elastic force action of the spring 2, the valve rod 1 drives the valve needle 6 to move upwards along the inner wall of the fixed seat 3-1, the valve needle 6 drives the piston 5 to move upwards in the pump body 4, negative pressure is formed in the pump body 4, and liquid is sucked into the pump body 4 from the feeding hole, and the fixed seat 3-1 is not easy to move upwards in the pump body 4 along with the valve rod 1 under the matching action of the positioning protrusion 3-4 and the positioning groove 3-1 in the process; repeated above-mentioned action can in the follow-up use, can be so that valve rod 1 press with the in-process of return, fixed part 3 is difficult for producing the displacement relative to the pump body 4 for the use of valve rod 1 is more stable.
Claims (4)
1. A push type liquid pump core is characterized in that: comprises a valve rod (1), a spring (2), a fixing part (3), a pump body (4), a piston (5), a valve needle (6) and a valve plate (7);
the lower end of the valve rod (1) extends into the pump body (4);
the valve needle (6) is arranged in the valve rod (1) and fixedly connected with the valve rod (1) into a whole;
the fixing part (3) is clamped between the valve rod (1) and the pump body (4), and dynamic sealing performance is achieved between the valve rod (1) and the fixing part (3);
the spring (2) is sleeved outside the valve rod (1), and the spring (2) is positioned between the inner side of the upper end part of the valve rod (1) and the fixing part (3);
the piston (5) is connected in the pump body (4) in a sliding manner, dynamic sealing performance exists between the piston and the pump body, and the piston (5) is positioned between the lower end of the fixing part (3) and the inner side of the lower end part of the valve needle (6);
the lower end of the pump body (4) is provided with a feed inlet, and the valve plate (7) is arranged in the feed inlet.
2. The push type liquid pump cartridge as claimed in claim 1, wherein: the fixing part (3) comprises a fixing seat (3-1), a limiting block (3-2) and a positioning bulge (3-4);
the fixed seat (3-1) is clamped between the valve rod (1) and the pump body (4);
the limiting block (3-2) is arranged at the outer end of the fixed seat (3-1) close to the upper side, the limiting block (3-2) is fixedly connected with the fixed seat (3-1) into a whole, and the lower end of the limiting block (3-2) is contacted with the upper end of the pump body (4);
at least one positioning bulge (3-4) is fixedly arranged at the outer end of the fixed seat (3-1); the inner wall of the pump body (4) is provided with at least one positioning groove (4-1) matched with the positioning bulge (3-4);
a limiting cavity (3-3) for accommodating the spring (2) is formed between the upper end of the limiting block (3-2) and the upper end of the fixing seat (3-1).
3. The push type liquid pump cartridge as claimed in claim 2, wherein: the upper end of the spring (2) is contacted with the inner side of the upper end part of the valve rod (1), and the lower end of the spring (2) is contacted with the inner wall of the limiting cavity (3-3).
4. The push type liquid pump cartridge as claimed in claim 2, wherein: the upper end of the piston (5) is contacted with the lower end of the fixed seat (3-1), and the lower end of the piston (5) is contacted with the inner side of the lower end part of the valve needle (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121224346.1U CN214811870U (en) | 2021-06-01 | 2021-06-01 | Push type liquid pump core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121224346.1U CN214811870U (en) | 2021-06-01 | 2021-06-01 | Push type liquid pump core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214811870U true CN214811870U (en) | 2021-11-23 |
Family
ID=78800258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121224346.1U Active CN214811870U (en) | 2021-06-01 | 2021-06-01 | Push type liquid pump core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214811870U (en) |
-
2021
- 2021-06-01 CN CN202121224346.1U patent/CN214811870U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231123 Address after: 312300 555 Xingye Road, Cao E Street, Shangyu District, Shaoxing, Zhejiang Patentee after: ZHEJIANG RUICHANG INDUSTRIAL Co.,Ltd. Address before: No. 1738-4, Renmin West Road, Dongguan Street, Shangyu District, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG RUNDA PACKAGE TECHNOLOGY Co.,Ltd. |