CN207728544U - The sealing device of super-pressure mud pump plunger - Google Patents
The sealing device of super-pressure mud pump plunger Download PDFInfo
- Publication number
- CN207728544U CN207728544U CN201721904082.8U CN201721904082U CN207728544U CN 207728544 U CN207728544 U CN 207728544U CN 201721904082 U CN201721904082 U CN 201721904082U CN 207728544 U CN207728544 U CN 207728544U
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- connecting cylinder
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- sealing
- plunger
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses a kind of sealing devices of super-pressure mud pump plunger, it is characterized in that, it include the connecting cylinder being fixedly connected with the pump housing, the cartridge seal body being located in by clamping in connecting cylinder, before being axially adjacent to the high pressure chest side of super-pressure slush pump along plunger, otherwise after being, it is positioned apart from UN sealing rings successively from front to back in the seal, preceding U-shaped sealing ring and rear U-shaped sealing ring, the oil groove that oilhole is connected to outside is formed through in seal interior sidewall surface between the preceding U-shaped sealing ring and rear U-shaped sealing ring, the oilhole, which corresponds to, runs through the seal, connecting cylinder and the pump housing.The combination sealing form of the utility model, instead of the self-sealing seal form of previous multiple V-type folder cloth sealings.Solves the problem of previous sealing intensity is relatively low, and service life is short, and part excessively is inconvenient to dismantle, the fretting wear larger impact efficiency of pump.
Description
Technical field
The utility model is related to mud pump technical field, the sealing more particularly to a kind of super-pressure mud pump plunger fills
It sets.
Background technology
Plunger sealing is one of important vulnerable part of reciprocating pump.It directly affects the performance of pump.Plunger poor sealing will
It is brought to user and prodigious safeguards the amount of labour.In past high-pressure slip-casting pump plunger Seal Design, plunger sealing is adopted mostly
Sealing ring lip is set to open by conveying the pressure of liquid simultaneously with multiple V-seals are compressed, it is tight with plunger surface and cabinet wall
Contiguity is touched and is sealed.This seal form service life is relatively short, needs to be replaced frequently, and since parts are excessive, makes
The fretting wear of plunger is larger, directly influences the efficiency of pump.
Utility model content
The purpose of this utility model is to be directed to technological deficiency existing in the prior art, and provide a kind of super-pressure slush pump
The sealing device of plunger.
Technical solution is used by realize the purpose of this utility model：
A kind of sealing device of super-pressure mud pump plunger, includes the connecting cylinder being fixedly connected with the pump housing, is positioned by clamping
Cartridge seal body in connecting cylinder, before being axially adjacent to the high pressure chest side of super-pressure slush pump along plunger, otherwise after being,
It is positioned apart from UN sealing rings, preceding U-shaped sealing ring and rear U-shaped sealing ring successively from front to back in the seal,
Oilhole is formed through in seal interior sidewall surface between the preceding U-shaped sealing ring and rear U-shaped sealing ring to be connected to outside
Oil groove, the oilhole correspond to run through the seal, connecting cylinder and the pump housing.
The width of the oil groove is 40-60mm, and depth 1-2mm, sealing ring is polyurethane, fluorubber or polytetrafluoroethyl-ne
Alkene material.
It is formed on the inner surface of the seal and accommodates the UN sealing rings, preceding U-shaped sealing and rear U to corresponding
The caulking groove of type sealing.
The connecting cylinder medial surface is formed with positioning land corresponding with seal, is fixed with the connecting cylinder tail portion
The dust ring of connection is by the seal clamping position.
The connecting cylinder tail portion is formed with screw thread inner stopper, the dust ring be threadedly coupled with connecting cylinder and with it is described
Plunger clearance fit.
The connecting cylinder is threadedly connected at the mounting hole of the pump housing, is arranged in oilhole front and rear sides between connecting cylinder and the pump housing
There is O-ring.
Oilhole front and rear sides are provided with O-ring between connecting cylinder and seal.
Further include cycle oil supply mechanism comprising oil box, oil pump, connection corresponding with oilhole oil inlet pipe and oil return pipe
Road.
Compared with prior art, the utility model has the beneficial effects that：
The plunger of the utility model seals a seal, a UN sealing, two U-shaped envelopes, the group of a dustband
Seal form is closed, instead of the self-sealing seal form of previous multiple V-type folder cloth sealings.It is relatively low to solve previous sealing intensity,
The problem of service life is short, and part excessively is inconvenient to dismantle, the fretting wear larger impact efficiency of pump.It is sealed compared to previous plunger
Structure have it is simple in structure be readily disassembled, leakage rate is small, service life is long, fretting wear is few, consumption power it is few, can be suitably used for it is a variety of
The advantages of pumped (conveying) medium.The large-scale grouting pump inconvenient especially suitable for dismounting.
Description of the drawings
Fig. 1 show the structural schematic diagram of the sealing device of the super-pressure mud pump plunger of the utility model.
Fig. 2 show the structural schematic diagram of seal.
Specific implementation mode
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description is only used to explain the utility model, is not used to limit the utility model.
As shown, the sealing device of the super-pressure mud pump plunger of the utility model, including be fixedly connected with the pump housing 10
Connecting cylinder 1, the cartridge seal body 2 in connecting cylinder is located in by clamping, with the height along plunger axially adjacent to super-pressure slush pump
Before pressure chamber side is, otherwise after being, UN sealing rings 3, preceding U-shaped have been positioned apart from successively from front to back in the seal
Sealing ring 4 and rear U-shaped sealing ring 5, in the seal interior sidewall surface between the preceding U-shaped sealing ring and rear U-shaped sealing ring
It is formed through the oil groove 21 that oilhole 6 is connected to outside, the oilhole 6, which corresponds to, runs through the seal, connecting cylinder and pump
Body.It is formed on the inner surface of the seal and accommodates the UN sealing rings, preceding U-shaped sealing and rear U-shaped close to corresponding
The caulking groove of envelope.
The width of the oil groove is that material uses polyurethane to 40-60mm sealing rings under normal circumstances, according to medium soda acid
Other materials of suitable mixture condition can be selected in the particular/special requirement of degree, corrosivity and temperature.Such as erosion-resisting fluorubber, it is resistance to
The polytetrafluoroethylene (PTFE) etc. of high temperature.Sealing ring can bear the pressure of 65MPa by line contact maximum, disclosure satisfy that various at this stage
The demand of operating mode.
Specifically, the connecting cylinder medial surface is formed with positioning land corresponding with seal, with the connection
By the seal clamping position, the connecting cylinder tail portion is formed in screw thread only the dust ring 9 that cylinder tail portion is fixedly connected
Mouthful, the dust ring be threadedly coupled with connecting cylinder and with the plunger clearance fit.It is correspondingly connected with using screw thread, is easy to tear open
It unloads, and leakage rate is small.
The sealing device of the utility model includes a seal, and two U-shaped sealing rings, a UN sealing ring, one anti-
Konisphere, the wherein oilhole in seal and oil groove can achieve the purpose that lubrication and cooling plunger by injecting lubricating oil, can have
The efficiency of the raising pump of effect, while extending the service life of vulnerable part.UN sealing rings act as preventing high-pressure medium, such as mud
It is leaked by plunger end, is sealed completely by preceding U-shaped sealing ring having a small amount of leakage.The master of two U-shaped sealing rings
It act as preventing leakage of the cutting oil from sealing place.Dust ring act as preventing dust from being brought into from power end by plunger
Seal, to increase the service life of sealing.
The connecting cylinder is threadedly connected at the mounting hole of the pump housing, is arranged in oilhole front and rear sides between connecting cylinder and the pump housing
There is O-ring, meanwhile, oilhole front and rear sides are provided with O-ring 7,8 between connecting cylinder and seal.Two groups of O-rings act as preventing
Only cutting oil and mud are from the leakage on the outside of seal
Preferably, further include cycle oil supply mechanism comprising oil box, oil pump, connection corresponding with oilhole oil inlet pipe and
Oil return line.Wherein for three-throw ram pump, it is only necessary to an oil box and oil pump, by corresponding on oil inlet pipe and oil return line
Increase four-way can both be realized to be lubricated while three plungers, reduces use cost.For horizontal plunger pump, then oil inlet setting exists
Lower part, oil outlet are located above, and after oil to be lubricated is all saturated with the plunger of lubrication, oil box is returned to by the oil outlet of upper end.With
Improve lubrication and circulating effect.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art
For logical technical staff, without departing from the principle of this utility model, several improvements and modifications can also be made, these change
The scope of protection of the utility model is also should be regarded as into retouching.
Claims (8)
1. a kind of sealing device of super-pressure mud pump plunger, which is characterized in that include the connecting cylinder being fixedly connected with the pump housing, quilt
Clamping is located in the cartridge seal body in connecting cylinder, before being axially adjacent to the high pressure chest side of super-pressure slush pump along plunger, instead
Be after, be positioned apart from UN sealing rings, preceding U-shaped sealing ring and rear U-shaped successively from front to back in the seal
Sealing ring, be formed through in the seal interior sidewall surface between the preceding U-shaped sealing ring and rear U-shaped sealing ring oilhole with
The oil groove of outside connection, the oilhole, which corresponds to, runs through the seal, connecting cylinder and the pump housing.
2. the sealing device of super-pressure mud pump plunger as described in claim 1, which is characterized in that the width of the oil groove
For 40-60mm, depth 1-2mm, sealing ring is polyurethane, fluorubber or polytetrafluoroethylene (PTFE) material.
3. the sealing device of super-pressure mud pump plunger as described in claim 1, which is characterized in that the seal it is interior
It is formed on surface to the caulking groove of UN sealing rings, preceding U-shaped sealing and rear U-shaped sealing described in corresponding accommodate.
4. the sealing device of super-pressure mud pump plunger as described in claim 1, which is characterized in that on the inside of the connecting cylinder
Face is formed with positioning land corresponding with seal, and the dust ring being fixedly connected with the connecting cylinder tail portion is by the sealing
Body clamping position.
5. the sealing device of super-pressure mud pump plunger as claimed in claim 4, which is characterized in that the connecting cylinder tail portion
Be formed with screw thread inner stopper, the dust ring be threadedly coupled with connecting cylinder and with the plunger clearance fit.
6. the sealing device of super-pressure mud pump plunger as described in claim 1, which is characterized in that the connecting cylinder screw thread
It is connected at the mounting hole of the pump housing, oilhole front and rear sides is provided with O-ring between connecting cylinder and the pump housing.
7. the sealing device of super-pressure mud pump plunger as described in claim 1, which is characterized in that between connecting cylinder and seal
Oilhole front and rear sides are provided with O-ring.
8. the sealing device of super-pressure mud pump plunger as described in claim 1, which is characterized in that further include recycling for oil machine
Structure comprising oil box, oil pump, connection corresponding with oilhole oil inlet pipe and oil return line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721904082.8U CN207728544U (en) | 2017-12-29 | 2017-12-29 | The sealing device of super-pressure mud pump plunger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721904082.8U CN207728544U (en) | 2017-12-29 | 2017-12-29 | The sealing device of super-pressure mud pump plunger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207728544U true CN207728544U (en) | 2018-08-14 |
Family
ID=63084078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721904082.8U Active CN207728544U (en) | 2017-12-29 | 2017-12-29 | The sealing device of super-pressure mud pump plunger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207728544U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219800A (en) * | 2019-07-19 | 2019-09-10 | 盘锦国强石油装备制造有限公司 | Drilling pump ceramics cylinder barrel, fluid end assembly and drilling pump |
| CN113719447A (en) * | 2021-09-28 | 2021-11-30 | 宝鸡航天动力泵业有限公司 | Quick-change sealing device for plunger pump and plunger pump |
-
2017
- 2017-12-29 CN CN201721904082.8U patent/CN207728544U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219800A (en) * | 2019-07-19 | 2019-09-10 | 盘锦国强石油装备制造有限公司 | Drilling pump ceramics cylinder barrel, fluid end assembly and drilling pump |
| CN113719447A (en) * | 2021-09-28 | 2021-11-30 | 宝鸡航天动力泵业有限公司 | Quick-change sealing device for plunger pump and plunger pump |
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