CN204553193U - The piston sealing device of reciprocating pump - Google Patents
The piston sealing device of reciprocating pump Download PDFInfo
- Publication number
- CN204553193U CN204553193U CN201520100583.5U CN201520100583U CN204553193U CN 204553193 U CN204553193 U CN 204553193U CN 201520100583 U CN201520100583 U CN 201520100583U CN 204553193 U CN204553193 U CN 204553193U
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- Prior art keywords
- friction top
- piston
- sealing
- reciprocating pump
- face
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Abstract
The utility model discloses a kind of piston sealing device of reciprocating pump, comprise Sealing (7) and friction top (3), in the piston (2) that described Sealing (7) is arranged on reciprocating pump and the Seal cage of cylinder body (1) in opposite directions between side face, the connecting rod (6) that described friction top (3) is enclosed within piston (2) is gone up and compresses above-mentioned Sealing (7), between described friction top (3) and piston (2), friction top controlling mechanism is installed, described controlling mechanism is for regulating the distance in opposite directions between end face of above-mentioned friction top (3) and piston (2), after adopting the utility model piston sealing device, Sealing is after wearing and tearing after a while, only need to regulate friction top controlling mechanism, again friction top is compressed, Sealing can be pressed to again the pressure of setting, avoid the generation of excessive compression to Sealing or underpressure phenomenon.
Description
Technical field:
The utility model relates to a kind of seal arrangement, especially relates to a kind of piston sealing device of reciprocating pump.
Background technique:
In reciprocating pump, be provided with Sealing in the Seal cage between piston and cylinder body, for the gap between packed-piston and cylinder body, Sealing friction top compresses, and along with the to-and-fro motion of piston, Sealing is constantly worn.Because the price comparison of partial seal is high, in order to reduce the expense of Sealing, current Normal practice is: when first installation Sealing, friction top is after press seal part, and a reserved intersegmental gap between end face in opposite directions of friction top and piston, after sealing part abrasion to certain degree, again with friction top, Sealing is compressed, reduce the gap in opposite directions between end face of friction top and piston simultaneously, so continue, until together with end face is adjacent in opposite directions of friction top and piston.
Above method is adopted to save Sealing, reduce the maintenance cost of reciprocating pump, but when with friction top press seal part, owing to being reserved with an intersegmental gap in opposite directions between end face at friction top and piston, the compression degree of friction top to Sealing should not be grasped, can cause not enough to the impacting force of Sealing or excessively compress, the leakage of reciprocating pump can be caused the impacting force deficiency of Sealing, the wearing and tearing of Sealing can be accelerated the excessive compression of Sealing.
Summary of the invention
The purpose of this utility model is for solving above-mentioned the deficiencies in the prior art, provides a kind of structure simple, to the seal arrangement of the pressure stability of Sealing.
For achieving the above object, the utility model have employed following technological scheme:
The piston sealing device of reciprocating pump, comprise Sealing and friction top, in the piston that Sealing is arranged on reciprocating pump and the Seal cage of cylinder body in opposite directions between side face, on the connecting rod that friction top is enclosed within piston and press seal part, between friction top and piston, be provided with friction top controlling mechanism, described controlling mechanism is for regulating the distance in opposite directions between end face of friction top and piston.
Further, friction top controlling mechanism is at least two packing rings be superimposed together, and the central part of packing ring has center hole, and the center hole of packing ring is through connecting rod and compacted lid is pressed on the end face of piston; The thickness of packing ring is 0.1 ~ 2.5mm.
Further, friction top controlling mechanism is at least three adjusting bolts, adjusting bolt annular is distributed on the end face of friction top, and friction top has tapped hole, and the tapped hole that adjusting bolt is screwed in friction top is against on the end face of piston through friction top; At least one adjusting washer (disk) is had between the bolt head of each adjusting bolt and friction top.
After adopting the utility model piston sealing device, Sealing is after wearing and tearing after a while, only need to adjust the gap between friction top controlling mechanism change friction top and piston, again friction top is compressed, Sealing can be pressed to again the pressure of setting, avoid the generation of excessive compression to Sealing or underpressure phenomenon.
When compression controlling mechanism is at least two packing rings be superimposed together, when adjusting the gap between friction top and piston, only need the packing ring shedding specified quantity, then friction top is compressed, just Sealing can be pressed to again the pressure of setting.
When compression controlling mechanism is at least three adjusting bolts, when adjusting the gap between friction top and piston, only needing the adjusting washer (disk) increasing specified quantity, then friction top is compressed, just Sealing can be pressed to again the pressure of setting.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of the first embodiment of the present utility model.
Fig. 2 is the structural representation of the second embodiment of the present utility model.
Fig. 3 is the structural representation of the third embodiment of the present utility model.
Mark in figure:
1. cylinder body, 2. piston, 3. friction top, 4. bolt, 5. packing ring,
6. connecting rod, 7. Sealing, 8. adjusting bolt, 9. adjusting washer (disk)
Embodiment:
Below in conjunction with accompanying drawing, the utility model is further illustrated.
Embodiment 1:
Consult Fig. 1, the piston sealing device of reciprocating pump, comprise Sealing 7 and friction top 3, in the piston 2 that Sealing 7 is arranged on reciprocating pump and the Seal cage of cylinder body 1 in opposite directions between side face, on the connecting rod 6 that friction top 3 is enclosed within piston 2 and press seal part 7, friction top controlling mechanism is installed between friction top 3 and piston 2; Friction top controlling mechanism is at least two packing rings be superimposed together 5, in the present embodiment, friction top controlling mechanism is four packing rings be superimposed together 5, and the central part of packing ring 5 has center hole, and the center hole of packing ring 5 passes connecting rod 6 and compacted lid 3 is pressed on the end face of piston 2.
Friction top 3 there is bolt hole, the end face of piston 2 has the tapped hole corresponding with bolt hole; The center hole of packing ring 5 is through connecting rod 6, and bolt 4 is fastened on tapped hole through bolt hole, makes friction top 3 be pressed on the end face of piston 2 by packing ring 5, and Sealing 7 is pressed in Seal cage by friction top 3 simultaneously.
The optimum thickness of packing ring 5 is 0.1 ~ 2.5mm, and the suitable number of the packing ring number of plies is at 2 ~ 5 layers.
In the present embodiment, the thickness of packing ring 5 is 0.1mm, and the number of plies of packing ring 5 is 5 layers.
When Sealing 7 decrement is larger, the thickness of packing ring 5 can select 2.5mm, and the number of plies of packing ring 5 is 2 layers.
After the wearing and tearing of Sealing 7 reach the wear extent of regulation, shed the packing ring 5 of the setting number of plies, then with friction top 3, remaining packing ring 5 is pressed on the end face of piston 2; After packing ring quantity reduces, after being compressed by friction top 3, Sealing 7 is out of shape increase under the extruding of friction top 3, and the amount of deformation that Sealing 7 increases compensate for the wearing and tearing of Sealing 7, ensure that the sealing between piston 2 and cylinder body 1.
After packing ring 5 is installed between friction top 3 and the end face in opposite directions of piston 2, the compression degree of friction top 3 pairs of Sealings 7 need not be controlled by the gap controlled between friction top 3 and piston 2 end face in opposite directions, controlled the decrement of friction top 3 pairs of Sealings 7 by the quantity reducing packing ring 5, avoid the excessive compression to Sealing 7 or underpressure.
Embodiment 2:
Friction top controlling mechanism is at least three adjusting bolts 8, and adjusting bolt 8 annular is distributed on the end face of friction top 3, and friction top 3 has tapped hole, and the tapped hole that adjusting bolt 8 is screwed in friction top 3 is against on the end face of piston 2 through friction top 3.
Consult Fig. 2, in the present embodiment, the quantity of adjusting bolt 8 is three, and on the tapped hole that three adjusting bolts 8 are screwed in friction top 3 and annular is distributed on the end face of friction top 3, three adjusting bolts 8 are against on the end face of piston 2 through friction top 3.
Further, consult Fig. 3, between the bolt head and friction top 3 of adjusting bolt 8, be provided with at least one adjusting washer (disk) 9, in the present embodiment, the quantity of adjusting washer (disk) 9 is three.
When needing to reduce the gap between friction top 3 and the end face of piston 2, first screwing adjusting bolt 8 makes adjusting bolt 8 screw the length of setting to the opposite direction of piston 2, adjusting bolt 8 is made to leave the end face of piston 2, then by fastening for bolt 4 and make adjusting bolt 8 be against on the end face of piston 2.
For the length making each adjusting bolt 8 screw is identical, between the bolt head and friction top 3 of adjusting bolt 8, adjusting washer (disk) 9 is installed, when needing to reduce the gap between friction top 3 and the end face of piston 2, the adjusting washer (disk) 9 of equal number is added between the bolt head and friction top 3 of each adjusting bolt 8, then by fastening for bolt 4.
Claims (5)
1. the piston sealing device of reciprocating pump, comprise Sealing (7) and friction top (3), in the piston (2) that described Sealing (7) is arranged on reciprocating pump and the Seal cage of cylinder body (1) in opposite directions between side face, the connecting rod (6) that described friction top (3) is enclosed within piston (2) is gone up and compresses above-mentioned Sealing (7), it is characterized in that: between described friction top (3) and piston (2), friction top controlling mechanism is installed, described controlling mechanism is for regulating the distance in opposite directions between end face of above-mentioned friction top (3) and piston (2).
2. the piston sealing device of reciprocating pump according to claim 1, it is characterized in that: described friction top controlling mechanism is at least two packing rings be superimposed together (5), the central part of packing ring (5) has center hole, and the center hole of packing ring (5) passes above-mentioned connecting rod (6) and compacted lid (3) is pressed on the end face of piston (2).
3. the piston sealing device of reciprocating pump according to claim 2, is characterized in that: the thickness of described packing ring (5) is 0.1 ~ 2.5mm.
4. the piston sealing device of reciprocating pump according to claim 1, it is characterized in that: described friction top controlling mechanism is at least three adjusting bolts (8), described adjusting bolt (8) annular is distributed on the end face of friction top (3), (3) have tapped hole to friction top, and the tapped hole that adjusting bolt (8) is screwed in above-mentioned friction top (3) is against on the end face of above-mentioned piston (2) through friction top (3).
5. the piston sealing device of reciprocating pump according to claim 4, is characterized in that: have at least one adjusting washer (disk) (9) between the bolt head of described each adjusting bolt (8) and friction top (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520100583.5U CN204553193U (en) | 2015-02-11 | 2015-02-11 | The piston sealing device of reciprocating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520100583.5U CN204553193U (en) | 2015-02-11 | 2015-02-11 | The piston sealing device of reciprocating pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204553193U true CN204553193U (en) | 2015-08-12 |
Family
ID=53828314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520100583.5U Expired - Fee Related CN204553193U (en) | 2015-02-11 | 2015-02-11 | The piston sealing device of reciprocating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204553193U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630811A (en) * | 2017-09-03 | 2018-01-26 | 宁波东湖液压传动有限公司 | A kind of plunger for hydraulic pump |
| CN107630810A (en) * | 2017-09-03 | 2018-01-26 | 宁波东湖液压传动有限公司 | Plunger for hydraulic pump |
-
2015
- 2015-02-11 CN CN201520100583.5U patent/CN204553193U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630811A (en) * | 2017-09-03 | 2018-01-26 | 宁波东湖液压传动有限公司 | A kind of plunger for hydraulic pump |
| CN107630810A (en) * | 2017-09-03 | 2018-01-26 | 宁波东湖液压传动有限公司 | Plunger for hydraulic pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150812 Termination date: 20200211 |