CN2219989Y - Pressure sealing device - Google Patents
Pressure sealing device Download PDFInfo
- Publication number
- CN2219989Y CN2219989Y CN 94243525 CN94243525U CN2219989Y CN 2219989 Y CN2219989 Y CN 2219989Y CN 94243525 CN94243525 CN 94243525 CN 94243525 U CN94243525 U CN 94243525U CN 2219989 Y CN2219989 Y CN 2219989Y
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- pump
- main
- plunger
- pressure
- suction
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- Expired - Fee Related
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Abstract
The utility model relates to a pressure sealing device, which is installed on the main pump plunger of a tri-jar plunger pump, mainly comprises a suction main, a suction valve, a spherical hinge sealing box, a hydraulic pump, and an offtake main, etc. The utility model is characterized in: the spherical hinge sealing box and the hydraulic pump are respectively installed on the pump head of the main pump, and forming a seal cavity, which keeps the differential pressures between the main pump and the seal cavity in certain scope. And since the pressure in the seal cavity is larger than it in the main pump cavity, the compression seal is achieved, which ensures that the wearing part is free from etching by the slurry, therefore, the life length of the seal components is enhanced.
Description
The utility model relates to the seal arrangement of a kind of seal arrangement of positive displacement pump reciprocating part, particularly plunger or piston rod, has broken the conventional method by the Sealing sealing, and the pressure seal arrangement that adopts pressure reduction to seal.
At present, on double cylinder double acting reciprocating pump or the three cylinder single-action plunger piston pumps, mostly adopt the self-energized seal part that piston rod or plunger are sealed, as Fig. 2: Sealing 16 is contained on the plunger 13 of main pump, and main pump chamber 6 is positioned at main pump pump head 5, with slip suction pipe 17, discharge tube 18 communicates, and the sealing of this class Sealing is in the line transportation of solid slip, can not satisfy the requirement of operating mode, the life-span is all very short.In order to improve the working life of piston rod or plunger and Sealing thereof, oil isolation pump has appearred successively, the water spray plunger pump, diaphragm pump, purpose is to prevent that solid material from entering Sealing, thereby improves the working life of piston rod or plunger and Sealing thereof.But the complicated operation of oil isolation pump, maintenance difficulty is big, and oil consumption is big; The jig frequency height of water spray plunger pump, the life-span of plunger and Sealing thereof can not get tangible raising, but also will dilute the concentration of slip; Though diaphragm pump is the trump pump in the shurry pump at present, domestic throwing has the product of success, and the product price of import is too expensive, all uses foreign exchange again, can't promote the use of.
The utility model purpose is, fundamentally solve the conventional problem that seals by Sealing, but adopt pressure reduction to seal, its working principle is the pressure reduction that utilizes in Seal cage and the main pump chamber, piston rod or plunger are implemented sealing, adopt state-of-the-art ball pivot sealing case (patent No. 91232369.8), piston rod or plunger are implemented sealing, with brand-new design and novel structure, fundamentally solve the life problems of piston rod or plunger and Sealing thereof.
The purpose of this utility model is achieved in that pressure seal arrangement is installed on the main pump plunger of three-cylinder plunger pump, mainly by suction main 1, suction valve 2, ball pivot sealing case 3, oil hydraulic pump 8, discharge header 11 compositions such as grade, wherein the suction main 1, safety valve is housed respectively on the discharge header 11, pressure gauge and pressure transducer, suction main 1 directly and pressure water source A join, discharge header 11 inserts pond 15, and it is characterized in that: ball pivot sealing case 3 and oil hydraulic pump 8 are contained in respectively in the pump head 5 of main pump, and ball pivot sealing case 3 is contained on the plunger 13 of main pump, the pressure reduction that forms between the spheroid inner seal liner in Seal cage 4 and the main pump chamber 5 remains at certain limit, and the pressure in the Seal cage 4 is greater than main pump chamber 6; Suction main 1 has three arms to connect with three ball pivot sealing casees 3 respectively by the suction valve 2 of check action, three Seal cages are received in the suction chamber 7 of oil hydraulic pump 8 by pipe 19 respectively, the runner 14 of liquid on plunger 12 enters discharge side 9, received on the discharge header 11 by pipe 10 again.
Advantage of the present utility model is: pressure seal arrangement is installed on the main pump plunger of three-cylinder plunger pump, and source pressure is 2-5kg/cm
2It is the pressure reduction that utilizes in Seal cage 4 and the main pump chamber 6, piston rod or plunger are implemented sealing, so sealing reliably, and can wash effectively, cooling, lube pistons bar or plunger, and do not dilute the concentration of slip, improved the working life of piston rod or plunger and Sealing thereof, brought into play the function of ball pivot sealing case simultaneously, prevent the side grinding of plunger effectively, and can reduce concentricity requirement between plunger and Sealing, significantly reduced the quantity of easily damaged parts.
Concrete structure of the present utility model further specifies by following examples and accompanying drawing thereof:
Fig. 1: for the utility model is installed in part-structure schematic representation on the three-cylinder plunger pump main pump plunger.
Fig. 2: be the structural representation of prior art.
Referring to Fig. 1, pressure seal arrangement is installed on the main pump plunger of three-cylinder plunger pump, mainly by suction main 1, suction valve 2, ball pivot sealing case 3, oil hydraulic pump 8, discharge header 11 compositions such as grade, wherein the suction main 1, safety valve is housed respectively on the discharge header 11, pressure gauge and pressure transducer, suction main 1 is directly joined with pressure water source A, discharge header 11 access ponds 15, it is characterized in that: ball pivot sealing case 3 and oil hydraulic pump 8 are contained in respectively in the pump head 5 of main pump, ball pivot sealing case 3 is contained on the plunger 13 of main pump, and the pressure reduction that forms between the spheroid inner seal liner in Seal cage 4 and the main pump chamber 6 remains at certain limit, and the pressure in the Seal cage 4 is greater than main pump chamber 6; Suction main 1 has three arms to connect with three ball pivot sealing casees 3 respectively by the suction valve 2 of check action, three Seal cages are received in the suction chamber 7 of oil hydraulic pump 8 by pipe 19 respectively, the runner 14 of liquid on plunger 12 enters discharge side 9, received on the discharge header 11 by pipe 10 again.Suction main 1 meets 2-5kg/cm
2Pressure water source A, 2 of suction valves allow clear water to enter ball pivot sealing case 3, play one-way valve, ball pivot sealing case 3 can be eliminated the side grinding of plunger 13 effectively, and relaxes the concentricity requirement of plunger 13 and Sealing; Oil hydraulic pump 8 is the pressure-actuated plunger pumps by clear water pressure and main pump chamber 6, can guarantee the certain flow of clear water, reach the purpose of flushing, cooling, lubricated main pump plunger 13, and make pressure in Seal cage 4 and the main pump chamber 6 under the dynamic balancing condition, guarantee that Seal cage 4 interior pressure are higher than the pressure in the main pump chamber 6 all the time, realize wiper seal; Discharge header 11 compiles the sparge water of three cylinders, is drained in the pond 15.Discharge header 11 is equipped with safety valve, pressure gauge and pressure transducer respectively on the suction main 1.
During work, in the induction stroke of main pump, band presses clear water by suction valve 2, enter the suction chamber 7 of oil hydraulic pump 8 through ball pivot sealing case 3, promote plunger 12 and move backward, make weep hole 14 enter discharge side 9, the band setting-out flows to discharge header 11 through pipe 10, flow into again in the pond 15, or be with the mobile flushable of setting-out in the atmosphere, cool off the plunger 13 of lubricated main pump, be higher than pressure in the main pump chamber with the pressure of setting-out simultaneously, realize wiper seal; In the starting stage of the discharge stroke of main pump 5, weep hole 14 on the plunger 12 does not enter before the Sealing, the band setting-out continues to flow, pressure in the main pump chamber surpasses the pressure of band setting-out, after weep hole 14 enters Sealing, the suction chamber 7 of oil hydraulic pump, ball pivot sealing case 3, form a closed chamber in the pipeline before the suction valve 2, since water can not contracting property, make wherein that the pressure of water reaches dynamic balancing with the pressure in the main pump chamber, but wherein the pressure of water is higher than the interior pressure in main pump chamber 6 all the time, make the solid slip can't enter seal area, but,, discharge along discharge tube 18 through main pump chamber 6 by slip suction pipe 17, realize wiper seal, improved the working life of Sealing.
In a word, pressure seal arrangement has been broken simple principle by the Sealing sealing, but leans on the pressure reduction in Seal cage and main pump chamber, realizes the seal action to the slip in the main pump chamber, is a kind of brand-new plunger sealing device, brand-new sealing idea.
Claims (1)
1, pressure seal arrangement is installed on the three-cylinder plunger pump plunger, mainly by suction main (1), suction valve (2), ball pivot sealing case (3), oil hydraulic pump (8), discharge header compositions such as (11), suction main (1) wherein, discharge header is equipped with safety valve respectively on (11), pressure gauge and pressure transducer, suction main (1) directly and pressure water source A join, discharge header (11) inserts pond (15), and it is characterized in that: ball pivot sealing case (3) and oil hydraulic pump (8) are contained in respectively in the pump head (5) of main pump, and ball pivot sealing case (3) is contained on the plunger (13) of main pump, the pressure reduction that forms between the spheroid inner seal liner in Seal cage (4) and the main pump chamber (6) remains at certain limit, and the pressure in the Seal cage (4) is greater than main pump chamber (6); Suction main (1) has three arms to connect with three ball pivot sealing casees (3) respectively by the suction valve (2) of check action, three Seal cages are received in the suction chamber (7) of oil hydraulic pump (8) by pipe (19) respectively, the runner of liquid on plunger (12) enters discharge side (9), received on the discharge header (11) by pipe (10) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94243525 CN2219989Y (en) | 1994-10-31 | 1994-10-31 | Pressure sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94243525 CN2219989Y (en) | 1994-10-31 | 1994-10-31 | Pressure sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2219989Y true CN2219989Y (en) | 1996-02-14 |
Family
ID=33849852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94243525 Expired - Fee Related CN2219989Y (en) | 1994-10-31 | 1994-10-31 | Pressure sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2219989Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718342B (en) * | 2009-12-05 | 2011-11-09 | 张英华 | Sealing device of continuous steam explosion machine |
| CN102974478A (en) * | 2012-12-04 | 2013-03-20 | 江苏牡丹离心机制造有限公司 | Vertical centrifuge with liquid seal device |
| WO2013127464A1 (en) | 2012-03-02 | 2013-09-06 | Maag Pump Systems Ag | Sealing arrangement, a conveying device having a sealing arrangement and a method for operating the sealing arrangement |
| CN103748389A (en) * | 2011-08-31 | 2014-04-23 | 伊利诺斯工具制品有限公司 | Hydraulic seal assembly for a thermoplastic material dispensing valve assembly |
-
1994
- 1994-10-31 CN CN 94243525 patent/CN2219989Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718342B (en) * | 2009-12-05 | 2011-11-09 | 张英华 | Sealing device of continuous steam explosion machine |
| CN103748389A (en) * | 2011-08-31 | 2014-04-23 | 伊利诺斯工具制品有限公司 | Hydraulic seal assembly for a thermoplastic material dispensing valve assembly |
| CN103748389B (en) * | 2011-08-31 | 2016-06-01 | 伊利诺斯工具制品有限公司 | For the hydraulic seal of thermoplastic material distribution valve assembly |
| WO2013127464A1 (en) | 2012-03-02 | 2013-09-06 | Maag Pump Systems Ag | Sealing arrangement, a conveying device having a sealing arrangement and a method for operating the sealing arrangement |
| CN104246131A (en) * | 2012-03-02 | 2014-12-24 | 多佛泵解决方案集团（欧洲）有限公司 | Sealing arrangement, a conveying device having a sealing arrangement and a method for operating the sealing arrangement |
| EP2820247B1 (en) * | 2012-03-02 | 2021-02-17 | Maag Pump Systems AG | Sealing arrangement, a conveying device having a sealing arrangement and a method for operating the sealing arrangement |
| CN102974478A (en) * | 2012-12-04 | 2013-03-20 | 江苏牡丹离心机制造有限公司 | Vertical centrifuge with liquid seal device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Zheng Daju Document name: payment instructions |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |