CN204476730U - The sealing of plunger type water injection pump letter body and leakage preventing structure - Google Patents
The sealing of plunger type water injection pump letter body and leakage preventing structure Download PDFInfo
- Publication number
- CN204476730U CN204476730U CN201520141793.9U CN201520141793U CN204476730U CN 204476730 U CN204476730 U CN 204476730U CN 201520141793 U CN201520141793 U CN 201520141793U CN 204476730 U CN204476730 U CN 204476730U
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- plunger
- hole
- box body
- stuffing box
- gland liner
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Abstract
The sealing of plunger type water injection pump letter body and leakage preventing structure, relate to the structure-design technique field of the sealing of plunger type water injection pump letter body, screw thread antiseepage, comprise plunger, stuffing box body; Outside plunger, in the opening end outside thread connection adjusting nut of stuffing box body; Axially arrange step hole in the inside of stuffing box body, step hole comprises the first through hole and the second through hole that arrange with one heart, forms filler chamber between the inner circle wall of the first through hole and the periphery wall of plunger; At stuffing box body opening end, gland liner is set; At least one group of drainage trough is arranged with in the upper-end surface of gland liner; At gland liner, between adjusting nut and stuffing box body, O-ring seal is set; Three fillers, spring seat, spring and guide holders are nested with respectively successively in filler chamber, in plunger periphery.The utility model structure is simple, easy to operate and reduce plunger pump operating load.
Description
Technical field
The utility model relates to the sealing of plunger type water injection pump letter body, the structure-design technique field of screw thread antiseepage.
Background technique
Former sealing means: when changing filler, dismantle stuffing box body, operation easier and working strength increase, and because filler is by adjusting nut compression, plunger and filler is rubbed and increases, cause plunger pump load to increase.Plunger pump operationally, the small part water of filler seepage slowly will infiltrate along the screw thread that adjusting nut is fastening, sewage can cause screw thread fouling, corrosion causes dismounting difficult, time serious, stuffing box body and adjusting nut screw thread damage completely, not only dismantle difficulty large, impact is normal produces, and also increases a large amount of maintenance cost.
Model utility content
The utility model object is for above problem, provides a kind of and directly can change filler when not dismantling stuffing box body, practical and convenient and improve the sealing of plunger type water injection pump letter body and the leakage preventing structure in working life.
The utility model comprises plunger, stuffing box body, and described plunger at one end stretches in stuffing box body; Outside described plunger, in the opening end outside thread connection adjusting nut of stuffing box body; In the inside of described stuffing box body, axially step hole is set, described step hole comprises the first through hole and the second through hole that arrange with one heart, tell the first through hole aperture be greater than the second through hole, the described aperture of the second through hole and the diametric fit of plunger, form filler chamber between the inner circle wall of described first through hole and the periphery wall of plunger; Arrange gland liner at stuffing box body opening end, the lower end of described gland liner is equipped with between stuffing box body and plunger; At least one group of drainage trough is arranged with in the upper-end surface of described gland liner; At described gland liner, between adjusting nut and stuffing box body, O-ring seal is set; Three fillers, spring seat, spring and guide holders are nested with respectively successively in described filler chamber, in plunger periphery; Described three fillers are arranged between gland liner and spring seat, and described spring one end is connected with spring seat, and the other end is connected with guide holder, and described guide holder is fixedly connected on the step surface between the first through hole and the second through hole.
The utility model is by the 7 piece filler former sealing means of plunger pump stuffing letter body by manual tune, change the automatic adjustment sealing means of 3 packing spring formulas into, tool withdrawal groove place bottom screw thread in adjusting nut, increase the seal ring that is greater than letter body upper-end surface and adjusting nut inner plane fixed range 0.5 ~ 1MM thickness, sewage can be stoped to infiltrate in screw thread.And gland liner end face is processed the symmetric channel of 4 about 0.5MM degree of depth, prevent the sewage of seepage between gland and seal ring, forming high pressure, for pressure release.Adopt after spring structure, change filler and only adjusting nut need be dismantled, inner gland liner and filler will under the thrust of spring automatic spring, as all do not ejected the collar extension edge that filler is also in stuffing box body, only need fiddle with just passable gently.And original 7 fillers are owing in use ceaselessly regulating compression, 3 ~ 4 fillers bottom when finally changing just cannot take out, and only have the whole stuffing box body of dismounting all to change.The utility model structure is simple, easy to operate and reduce plunger pump operating load.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises plunger 1, stuffing box body 2, and plunger 1 one end is stretched in stuffing box body 2; Outside described plunger 1, in the opening end outside thread connection adjusting nut 3 of stuffing box body 2; In the inside of described stuffing box body 2, axially step hole 4 is set, step hole 4 comprises the first through hole 4-1 and the second through hole 4-2 that arrange with one heart, the aperture of the first through hole 4-1 is greater than the second through hole 4-2, the aperture of the second through hole 4-2 and the diametric fit of plunger 1, form filler chamber 5 between the inner circle wall of the first through hole 4-1 and the periphery wall of plunger 1; Arrange gland liner 6 at stuffing box body 2 opening end, the lower end of gland liner 6 is equipped with between stuffing box body 2 and plunger 1; At least one group of drainage trough 7 is arranged with in the upper-end surface of gland liner 6; At gland liner 6, between adjusting nut 3 and stuffing box body 2, O-ring seal 8 is set; Three fillers 9, spring seat 10, spring 11 and guide holder 12 is nested with respectively successively in filler chamber 5, in plunger 1 periphery; Three fillers 9 are arranged between gland liner 6 and spring seat 10, and spring 11 one end is connected with spring seat 10, and the other end is connected with guide holder 12, and guide holder 12 is fixedly connected on the step surface between the first through hole 4-1 and the second through hole 4-2.
Claims (1)
1. the sealing of plunger type water injection pump letter body and leakage preventing structure, it is characterized in that: comprise plunger, stuffing box body, described plunger at one end stretches in stuffing box body; Outside described plunger, in the opening end outside thread connection adjusting nut of stuffing box body; In the inside of described stuffing box body, axially step hole is set, described step hole comprises the first through hole and the second through hole that arrange with one heart, the aperture of described first through hole is greater than the second through hole, the described aperture of the second through hole and the diametric fit of plunger, form filler chamber between the inner circle wall of described first through hole and the periphery wall of plunger; Arrange gland liner at stuffing box body opening end, the lower end of described gland liner is equipped with between stuffing box body and plunger; At least one group of drainage trough is arranged with in the upper-end surface of described gland liner; At described gland liner, between adjusting nut and stuffing box body, O-ring seal is set; Three fillers, spring seat, spring and guide holders are nested with respectively successively in described filler chamber, in plunger periphery; Described three fillers are arranged between gland liner and spring seat, and described spring one end is connected with spring seat, and the other end is connected with guide holder, and described guide holder is fixedly connected on the step surface between the first through hole and the second through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520141793.9U CN204476730U (en) | 2015-03-13 | 2015-03-13 | The sealing of plunger type water injection pump letter body and leakage preventing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520141793.9U CN204476730U (en) | 2015-03-13 | 2015-03-13 | The sealing of plunger type water injection pump letter body and leakage preventing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204476730U true CN204476730U (en) | 2015-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520141793.9U Active CN204476730U (en) | 2015-03-13 | 2015-03-13 | The sealing of plunger type water injection pump letter body and leakage preventing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204476730U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246919A (en) * | 2016-10-09 | 2016-12-21 | 中国核动力研究设计院 | One prevents pretightning force from relaxing and easily detachable packing seal structure |
| CN110945241A (en) * | 2017-07-20 | 2020-03-31 | 罗伯特·博世有限公司 | Piston pump, in particular high-pressure fuel pump for an internal combustion engine |
| CN112211815A (en) * | 2020-10-22 | 2021-01-12 | 重庆水泵厂有限责任公司 | Reciprocating pump plunger seal structure |
-
2015
- 2015-03-13 CN CN201520141793.9U patent/CN204476730U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246919A (en) * | 2016-10-09 | 2016-12-21 | 中国核动力研究设计院 | One prevents pretightning force from relaxing and easily detachable packing seal structure |
| CN110945241A (en) * | 2017-07-20 | 2020-03-31 | 罗伯特·博世有限公司 | Piston pump, in particular high-pressure fuel pump for an internal combustion engine |
| CN112211815A (en) * | 2020-10-22 | 2021-01-12 | 重庆水泵厂有限责任公司 | Reciprocating pump plunger seal structure |
| CN112211815B (en) * | 2020-10-22 | 2022-07-01 | 重庆水泵厂有限责任公司 | Reciprocating pump plunger seal structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |