CN221400887U - Gap seal plunger rod structure - Google Patents
Gap seal plunger rod structureInfo
- Publication number
- CN221400887U CN221400887U CN202323413183.3U CN202323413183U CN221400887U CN 221400887 U CN221400887 U CN 221400887U CN 202323413183 U CN202323413183 U CN 202323413183U CN 221400887 U CN221400887 U CN 221400887U
- Authority
- CN
- China
- Prior art keywords
- plunger rod
- plunger
- sleeve
- gap
- utility
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000012856 packing Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model discloses a gap sealing plunger rod structure, which comprises a plunger rod, wherein a plunger sleeve is arranged outside the plunger rod, the plunger sleeve is in sliding connection with the plunger rod, a gap is reserved between the plunger sleeve and the plunger rod, the gap is 0-0.7um, the gap is controlled to be about 0.5um, water forms a high-pressure water curtain between the plunger rod and the plunger sleeve, and the gap is sealed.
Description
Technical Field
The utility model relates to the field of plunger rod structures, in particular to a gap sealing plunger rod structure.
Background
Plunger rods are an important device of plunger pump systems. The plunger reciprocates in the cylinder body to change the volume of the sealed working cavity for sucking and pressing.
However, due to repeated friction between the plunger rod and the plunger sleeve, the tightness of the plunger rod is often damaged, and the packing or the O-shaped ring is required to be frequently replaced in hundreds of hours, or the whole plunger rod sleeve is replaced, so that the failure rate of the machine is high, and the use cost is high, and therefore, a gap sealing plunger rod structure is needed to solve the problems.
Disclosure of utility model
The present utility model is directed to a plunger rod structure with a gap seal that overcomes the above-mentioned shortcomings of the prior art.
In order to achieve the above object, the present utility model provides the following technical solutions:
The utility model provides a clearance seal plunger rod structure, includes the plunger rod, the outside of plunger rod is provided with the plunger sleeve, plunger sleeve and plunger rod sliding connection, reserve the clearance between plunger sleeve and the plunger rod, the scope of clearance is 0-0.7um.
Further, the plunger rod is in threaded connection with an end cover, the end cover is provided with a threaded hole, one end of the plunger rod is provided with a threaded portion, and the threaded portion is in threaded connection with the inside of the threaded hole.
Further, a gasket is arranged on one side of the end cover, and an O-shaped ring is arranged on one side of the gasket.
Further, one end of the plunger sleeve is provided with a buffer ring, and the buffer ring is in sliding connection with the plunger rod.
Further, the number of the gaskets is two, and the two gaskets are overlapped.
In the technical scheme, the gap sealing plunger rod structure provided by the utility model has the important technical points that (1) the gap sealing is adopted between the plunger rod and the plunger sleeve, the gap is controlled to be about 0.5um, water forms a high-pressure water curtain between the plunger rod and the plunger sleeve, and the gap is sealed, so that the frequency of replacing vulnerable parts is reduced due to no need of adopting packing sealing and O-shaped ring sealing, the service life of the plunger rod sleeve is greatly prolonged, and meanwhile, the service life of the whole plunger pump is longer.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
Fig. 1 is a schematic diagram of a front view of an embodiment of a gap-sealing plunger rod structure according to the present utility model.
Reference numerals illustrate:
1 plunger rod, 2 end cover, 3 gasket, 4O shape circle, 5 plunger sleeve, 6 buffer ring, 7 screw holes, 8 screw thread portion.
Detailed Description
In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, the gap sealing plunger rod structure provided by the embodiment of the utility model comprises a plunger rod 1, wherein a plunger sleeve 5 is arranged outside the plunger rod 1, the plunger sleeve 5 is in sliding connection with the plunger rod 1, a gap is reserved between the plunger sleeve 5 and the plunger rod 1, and the gap is 0-0.7um.
In the specific embodiment, a plunger sleeve 5 is arranged outside the plunger rod 1, the plunger sleeve 5 is in sliding connection with the plunger rod 1, a gap is reserved between the plunger sleeve 5 and the plunger rod 1, and the gap is in the range of 0-0.7um; the gap between the plunger rod and the plunger sleeve is sealed, the gap is controlled to be about 0.5um, water forms a high-pressure water curtain between the plunger rod and the plunger sleeve, and the gap is sealed, so that the service life of the plunger rod sleeve is greatly prolonged due to the fact that the packing seal and the O-shaped ring seal are not needed.
Further, the plunger rod 1 is screwed with the end cap 2, the end cap 2 is provided with a threaded hole 7, one end of the plunger rod 1 is provided with a threaded portion 8, and the threaded portion 8 is screwed inside the threaded hole 7. The threaded portion 8 and the threaded hole 7 allow a good replacement of the plunger rod.
Further, one side of the end cover 2 is provided with a gasket 3, and one side of the gasket 3 is provided with an O-shaped ring 4,O and a ring 4, so that a good buffering effect is achieved.
Further, one end of plunger sleeve 5 is provided with buffer ring 6, buffer ring 6 and plunger rod 1 sliding connection, and buffer ring 6 accompanies plunger sleeve 5 along the plunger rod to remove to the position of end cover 2 when pressure is enough, and buffer ring 6 and O shape circle contact prevent plunger sleeve and end cover contact friction, lead to practical life to reduce.
Further, the number of the gaskets 3 is two, and the two gaskets 3 are overlapped.
Example 1
The clearance seal plunger rod structure is characterized in that a plunger sleeve 5 is arranged outside a plunger rod 1, the plunger sleeve 5 is in sliding connection with the plunger rod 1, a clearance is reserved between the plunger sleeve 5 and the plunger rod 1, and the range of the clearance is 0-0.7um; the clearance seal is adopted between the plunger rod and the plunger sleeve, the clearance is controlled to be about 0.5um, the water forms a high-pressure water curtain between the plunger rod and the plunger sleeve, the clearance is sealed, through testing, the service life of the plunger rod adopting the structure can reach about 2 years, and the frequency of replacing vulnerable parts is reduced because the packing seal and the O-shaped ring seal are not required, so that the service life of the plunger rod sleeve is greatly prolonged, and meanwhile, the service life of the whole plunger pump is longer.
Example 2
The embodiment is further defined on the basis of embodiment 1, the plunger rod 1 is in threaded connection with the end cover 2, the end cover 2 is provided with a threaded hole 7, one end of the plunger rod 1 is provided with a threaded portion 8, the threaded portion 8 is in threaded connection with the inside of the threaded hole 7, one side of the end cover 2 is provided with a gasket 3, one side of the gasket 3 is provided with an O-shaped ring 4, one end of the plunger sleeve 5 is provided with a buffer ring 6, the buffer ring 6 is in sliding connection with the plunger rod 1, the number of the gaskets 3 is two, and the two gaskets 3 are overlapped.
While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.
Claims (2)
1. The utility model provides a clearance seal plunger rod structure, its characterized in that, including plunger rod (1), the outside of plunger rod (1) is provided with plunger sleeve (5), plunger sleeve (5) and plunger rod (1) sliding connection, reserve the clearance between plunger sleeve (5) and the plunger rod (1), the scope of clearance is 0-0.7um, plunger rod (1) threaded connection has end cover (2), end cover (2) have a screw hole (7), the one end of plunger rod (1) is provided with screw portion (8), screw portion (8) threaded connection is in the inside of screw hole (7), one side of end cover (2) is provided with gasket (3), one side of gasket (3) is provided with O shape circle (4), one end of plunger sleeve (5) is provided with buffer ring (6), buffer ring (6) and plunger rod (1) sliding connection.
2. A gap-sealing plunger rod arrangement according to claim 1, characterized in that the number of gaskets (3) is two, the two gaskets (3) being arranged in superposition.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221400887U true CN221400887U (en) | 2024-07-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |