CN205172866U - Pump core structure - Google Patents
Pump core structure Download PDFInfo
- Publication number
- CN205172866U CN205172866U CN201520934933.8U CN201520934933U CN205172866U CN 205172866 U CN205172866 U CN 205172866U CN 201520934933 U CN201520934933 U CN 201520934933U CN 205172866 U CN205172866 U CN 205172866U
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- piston
- seat
- pump housing
- feed liquor
- piston seat
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Abstract
The utility model provides a pump core structure, which comprises a pump body, the piston seat, a piston, a piston rod, the connecting seat, the spring with inhale the piece, piston seat and piston are located inside the pump body, the lower tip of piston rod stretches into in the pump body and matches with piston seat and piston, upwards stretch out in the pump body upper end of piston rod, the upper end at the pump body is installed to the connecting seat, it is sealed to be the clearance fit between the upper end of piston and the piston seat, leave the feed liquor clearance under the piston between tip and the piston seat, the tip is opened under the piston seat has the radial feed liquor hole that is linked together with the feed liquor clearance, still open the axial feed liquor hole that is located radial feed liquor hole top and is linked together with radial feed liquor hole on the piston seat. The utility model has the advantages of: it is sealed to be the clearance fit between this pump core structure's piston and the piston seat to through radial feed liquor hole and the axial feed liquor hole of offering mutual intercommunication on the piston seat, can make the direct middle entering head cap of following the piston seat of liquid blow out in the final head cap hole of following, its feed liquor mode novelty just is difficult for appearing liquid leakage phenomenon.
Description
Technical field
The utility model relates to a kind of emulsion pumps, especially relates to a kind of pump cored structure of emulsion pumps.
Background technique
Pump core is the critical piece of emulsion pumps, existing pump cored structure generally all includes the pump housing, piston seat, piston, piston rod, connecting base, spring and suction sheet, wherein, piston seat and piston are arranged on pump body, the underpart of piston rod to be stretched in the pump housing and is matched with piston seat and piston, and the upper end portion of piston rod protrudes upward in the pump housing.Mainly there is following defect in existing pump cored structure: the liquid 1, in the pump housing enters from the gap between piston seat and piston and enters head cap by the groove piston rod, final from the beginning cap aperture ejection, piston and piston rod activity fitted seal, in using process, piston rod is once there be cleavage phenomenon (mainly split in the lower end of piston rod), then emulsion pumps the phenomenon of leakage can occur.2, adopt plane sealing between piston and connecting base, not only increase the risk of leakage, and require also higher to the making of connecting base.3, owing to adopting interior seal structure between piston and piston seat, thus piston can unrestrictedly be expanded outward, thus there is the possibility of piston cracking.4, the pump housing is firm not enough with coordinating of connecting base, easily produces obscission; Often need when 5, inhaling sheet assembling choosing to, thus add assembling difficulty and assembly cost.In sum, need to be further improved existing pump cored structure.
Model utility content
Technical problem to be solved in the utility model is for above-mentioned prior art present situation, provides a kind of feed liquor novel structure and can not produce the pump cored structure of the phenomenon of leakage.
The utility model solves the problems of the technologies described above adopted technological scheme: this pump cored structure, comprise the pump housing, piston seat, piston, piston rod, connecting base, spring and suction sheet, described piston seat and piston are located at pump body, the underpart of described piston rod to be stretched in the pump housing and is matched with described piston seat and piston, the upper end portion of described piston rod protrudes upward in the described pump housing, described connecting base is arranged on the upper end portion of the pump housing, it is characterized in that: in activity fitted seal between the upper end portion of described piston and piston seat, feed liquor gap is left between the underpart of described piston and piston seat, the radial inlet opening be connected with described feed liquor gap is had in the underpart of described piston seat, described piston seat also has the shaft orientation liquid feeding hole that bottom is connected with this radial inlet opening.
In order to improve the sealing between piston and connecting base, described connecting base has internal ring wall to downward-extension and external annulus, described internal ring wall is spacing between the described pump housing and piston rod, and the bottom of internal ring wall offsets with described piston head and is formed with the oblique sealing surface coordinated with piston seal bottom internal ring wall.
In order to make the pump housing more firm with coordinating of connecting base, radial boss under the upper end portion of the described pump housing forms a circle, bottom and the described lower radial boss of described external annulus offset, the outer side surface of described external annulus forms radial boss on a circle, described lower radial boss and on form annular groove between radial boss.
Unrestrictedly open outward to prevent piston, described piston seat is used for the horizontal plane that matches with piston forms upwards extend one enclose projection, form spacing draw-in groove between described projection and the sidewall of piston seat, the underpart of described piston is limited in described spacing draw-in groove.
Preferred as above-mentioned either a program, it is outer and be set on described piston rod that the described pump housing is located at by described spring, and described connecting base is arranged on the upper end portion of the pump housing, and described suction sheet is arranged on the underpart of the pump housing and and forms inclined plane sealing structure between the pump housing.
In order to make the two sides of suction sheet all can assemble, preferably, the upper end surface structure of described suction sheet is identical with lower end surface structure.Like this, assembling difficulty and assembly cost can be reduced.
Compared with prior art, the utility model has the advantage of: first, in activity fitted seal between the piston of the pump cored structure of this emulsion pumps and piston seat, and by offering the radial inlet opening and shaft orientation liquid feeding hole that are interconnected on piston seat, liquid can be made from the centre of piston seat directly to enter head cap and final from the beginning cap aperture ejection, this feed liquor mode is comparatively novel, even and if occur that the phenomenon of splitting also there will not be the phenomenon of leakage at piston-rod lower end; Secondly, adopt inclined-plane to seal between piston and connecting base, both can ensure sealing effect, reduce leakage risk, the requirement that connecting base can be made again to make reduces; Finally, between the upper radial boss on the lower radial boss of the pump housing and connecting base outer side surface, form the annular groove being used for blocking emulsion pumps great circle, make the pump housing more firm with coordinating of connecting base, difficult drop-off.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the perspective exploded view of the utility model embodiment;
Fig. 3 is the structural representation of the piston seat of the utility model embodiment;
Fig. 4 is the sectional view of the utility model embodiment;
Fig. 5 is the sectional view after the utility model embodiment installs great circle and head cap.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Figures 1 to 5, pump cored structure in the present embodiment comprises the pump housing 1, piston seat 2, piston 3, piston rod 4, connecting base 5, spring 6 and inhales sheet 7, wherein, it is inner that piston seat 2 and piston 3 are located at the pump housing 1, the underpart of piston rod 4 to be stretched in the pump housing 1 and is matched with piston seat 2 and piston 3, and the upper end portion of piston rod 4 protrudes upward in the pump housing 1, and connecting base 5 is arranged on the upper end portion of the pump housing 1, it is outer and be set on piston rod 4 that the pump housing 1 is located at by spring 6, inhales the underpart that sheet 7 is arranged on the pump housing 1.
In the present embodiment, in activity fitted seal between the upper end portion of piston 3 and piston seat 2, feed liquor gap 10 is left between the underpart of piston 3 and piston seat 2, have the radial inlet opening 21 be connected with feed liquor gap 10 in the underpart of piston seat 2, piston seat 2 also has the shaft orientation liquid feeding hole 22 that bottom is connected with this radial inlet opening 21.During use, directly from being entered into head cap 9 by the radial inlet opening 21 piston seat 2 and shaft orientation liquid feeding hole 22 and final from the beginning cap aperture ejection, not easily can there is the phenomenon of leakage in the liquid in the pump housing 1.
In the present embodiment, between piston 3 and connecting base 5, sealing configuration is as follows: connecting base 5 has internal ring wall 51 to downward-extension and external annulus 52, internal ring wall 51 is spacing between the pump housing 1 and piston rod 4, and the bottom of internal ring wall 51 and piston 3 top offset and be formed with the oblique sealing surface 53 be sealed and matched with piston 3 bottom internal ring wall 51.After adopting inclined-plane to seal between piston 3 and connecting base 5, not only can improve the sealing between piston 3 and connecting base 5, decrease the risk of leakage, and the making of connecting base can be made to require to reduce.
Piston 3 is as follows with the sealing configuration of piston seat 2: be used for the horizontal plane that matches with piston 3 forms on piston seat 2 upwards extend one enclose protruding 23, form spacing draw-in groove 24 between protruding 23 and the sidewall of piston seat 2, the underpart of piston 3 is limited in spacing draw-in groove 24.Like this, piston 3 and the sealing effect of piston seat 2 can being improved on the one hand, can preventing piston 3 from producing the possibility of cracking because unrestrictedly opening outward on the other hand.
In the present embodiment, spring 6 is external, and to be namely located at the pump housing 1 outer and be set on piston rod 4 for spring 6.Inhale the underpart that sheet 7 is arranged on the pump housing 1, in order to improve sealing, inhaling between sheet 7 and the pump housing 1 and forming inclined plane sealing structure.In order to make suction sheet 7 easy to assembly, inhale the upper end surface structure of sheet 7 identical with lower end surface structure, like this, inhale need not to select when sheet is installed to, two sides all can be assembled, and reduces and assembles difficulty and assembly cost.
Shown in composition graphs 1, Figure 4 and 5, head cap 9 is arranged on piston rod 4 top, radial boss 11 under the upper end portion of the pump housing 1 forms a circle, bottom and the lower radial boss 11 of the external annulus 52 of connecting base 5 offset, and the outer side surface of external annulus 52 forms radial boss 54 on a circle, lower radial boss 11 and on form annular groove 55 between radial boss 54, great circle 8 is fastened in this annular groove 55, like this, the pump housing 1 is more firm with coordinating of connecting base 5, difficult drop-off.
The foregoing is only preferred implementation of the present utility model; it should be pointed out that for those of ordinary skills, do not departing under principle prerequisite of the present utility model; can carry out multiple remodeling or improvement to the utility model, these are all regarded as within protection domain of the present utility model.
Claims (6)
1. a pump cored structure, comprise the pump housing (1), piston seat (2), piston (3), piston rod (4), connecting base (5), spring (6) and suction sheet (7), it is inner that described piston seat (2) and piston (3) are located at the pump housing (1), the underpart of described piston rod (4) to be stretched in the pump housing (1) and is matched with described piston seat (2) and piston (3), the upper end portion of described piston rod (4) protrudes upward in the described pump housing (1), described connecting base (5) is arranged on the upper end portion of the pump housing (1), it is characterized in that: in activity fitted seal between the upper end portion of described piston (3) and piston seat (2), feed liquor gap (10) is left between the underpart of described piston (3) and piston seat (2), the radial inlet opening (21) be connected with described feed liquor gap (10) is had in the underpart of described piston seat (2), described piston seat (2) also has the shaft orientation liquid feeding hole (22) that bottom is connected with this radial inlet opening (21).
2. pump cored structure according to claim 1, it is characterized in that: described connecting base (5) has internal ring wall (51) to downward-extension and external annulus (52), described internal ring wall (51) is spacing between the described pump housing (1) and piston rod (4), and the bottom of internal ring wall (51) and described piston (3) top offset and internal ring wall (51) bottom is formed with the oblique sealing surface (53) be sealed and matched with piston (3).
3. pump cored structure according to claim 2, it is characterized in that: radial boss (11) under the upper end portion of the described pump housing (1) forms a circle, bottom and the described lower radial boss (11) of described external annulus (52) offset, the outer side surface of described external annulus (52) forms radial boss (54) on a circle, between described lower radial boss (11) and upper radial boss (54), forms annular groove (55).
4. pump cored structure according to claim 1, it is characterized in that: on described piston seat (2), be used for the horizontal plane that matches with piston (3) forms enclosing protruding (23) of upwards extending, form spacing draw-in groove (24) between the sidewall of described projection (23) and piston seat (2), the underpart of described piston (3) is limited in described spacing draw-in groove (24).
5. the pump cored structure according to claim arbitrary in Claims 1-4, it is characterized in that: described spring (6) is located at the described pump housing (1) and be set on described piston rod (4) outward, and described suction sheet (7) is arranged on the underpart of the pump housing (1) and and forms inclined plane sealing structure between the pump housing (1).
6. pump cored structure according to claim 5, is characterized in that: the upper end surface structure of described suction sheet (7) is identical with lower end surface structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520934933.8U CN205172866U (en) | 2015-11-20 | 2015-11-20 | Pump core structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520934933.8U CN205172866U (en) | 2015-11-20 | 2015-11-20 | Pump core structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205172866U true CN205172866U (en) | 2016-04-20 |
Family
ID=55736868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520934933.8U Active CN205172866U (en) | 2015-11-20 | 2015-11-20 | Pump core structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205172866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110053863A (en) * | 2019-05-29 | 2019-07-26 | 浙江晟祺实业有限公司 | A kind of nozzle structure |
| CN110192705A (en) * | 2019-05-30 | 2019-09-03 | 浙江晟祺实业有限公司 | A kind of cosmetics containers |
-
2015
- 2015-11-20 CN CN201520934933.8U patent/CN205172866U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110053863A (en) * | 2019-05-29 | 2019-07-26 | 浙江晟祺实业有限公司 | A kind of nozzle structure |
| CN110192705A (en) * | 2019-05-30 | 2019-09-03 | 浙江晟祺实业有限公司 | A kind of cosmetics containers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 315400 3 Rong Guang road, Yuyao, Zhejiang Patentee after: Zhejiang Sheng Qi Industrial Co., Ltd. Address before: 315400 No. 55 Changfengqiao Road, Lanjiang Street, Yuyao City, Zhejiang Province Patentee before: Yuyao Shengqi Plastic Co., Ltd. |
|
| CP03 | Change of name, title or address |