CN2802123Y - Sealing structure of high pressure plunger pump - Google Patents
Sealing structure of high pressure plunger pump Download PDFInfo
- Publication number
- CN2802123Y CN2802123Y CN 200520073209 CN200520073209U CN2802123Y CN 2802123 Y CN2802123 Y CN 2802123Y CN 200520073209 CN200520073209 CN 200520073209 CN 200520073209 U CN200520073209 U CN 200520073209U CN 2802123 Y CN2802123 Y CN 2802123Y
- Authority
- CN
- China
- Prior art keywords
- seal
- sealing element
- compressive
- sealing
- plunger
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses a sealing structure of a high pressure plunger pump, which is mainly composed of a plunger ring and a sealing assembly that is sheathed on the plunger ring. The utility model is characterized in that the sealing assembly is formed by the superposition of a soft sealing element at the front end and a hard sealing element at the rear end, wherein the structural strength of the soft sealing element is smaller than the structural strength of the hard sealing element. An annular concave step is arranged on the dorsal part of the soft sealing element and near the hard sealing element. The front end face of the hard sealing element is provided with a bulge, the shape of which is fitted with the shape the dorsal part of the soft sealing element and the bulge on the hard sealing element is buckled with the dorsal part of the soft sealing element to form sealing connection. The utility model makes use of the complementary of the characteristics of the soft sealing element and the hard sealing element to improve the sealing effect of the sealing structure, and prolong the service life of the sealing structure.
Description
Technical field
The utility model relates to a kind of high-pressure plunger type pump, is specifically related to the sealing configuration of the free clearance between a kind of cylinder body and the plunger.
Background technique
But ram type pump has the characteristic of transferring high voltage liquid medium, is applicable to that flushing, sand removal, rust cleaning, liquid conveying, liquid transmission, engineering driving are so that operations such as Metal Cutting.Yet, the plunger in can guaranteeing to move, proper functioning in the process of transmitting high-pressure liquid medium, its sealing configuration is vital.
In the prior art, the sealing configuration of ram type pump is made up of plunger ring and sheathed thereon black box, and black box can be divided into hard with soft two kinds, soft mostly be the Sealing that V-arrangement, Y shape rubber, canvas filler rubber or asbestos rubber material are made; Hard as Chinese utility model patent CN2135670Y disclosed " a kind of black box that is used for plunger pump ", it adopts is that the opening elastic collar made of alloy cast iron is as black box.The former when being used for the high-pressure plunger type pump, be subjected to for a long time high-pressure water flow extruding (usually pressure 150～300 kilogram forces/centimetre
2, even higher), can produce compressive strain; The latter can bear high-pressure water flow and indeformable, but if when having impurity, particle foreign matter in the current, impurity easily embeds in the Sealing, causes damage, lacked as the former compressive seal intercept, the function of impurity screening.Therefore, in the high-pressure plunger type pump, the sealing configuration that uses can't be guaranteed sealing effect at present, and working life is all shorter relatively, causes the user cost problem of higher.
Summary of the invention
The utility model purpose provides a kind of not yielding, good sealing effect, and long service life is applicable to the sealing configuration of high-pressure plunger type pump.
For achieving the above object, the technical solution adopted in the utility model is: a kind of high-pressure plunger type pump seal structure, it mainly is made of plunger ring and sheathed thereon black box, described black box is made up of the rigid seal stack of compressive seal that is positioned at front end and rear end, and the structural strength of described compressive seal is less than the structural strength of rigid seal; The dorsal part of described compressive seal with the rigid seal adjacent, is provided with the step that caves inward of annular, and the front-end face of described rigid seal is provided with the projection of the dorsal part form fit of shape and compressive seal, and both engage formation and are tightly connected.
So-called ram type pump, also can be described as reciprocating type ram type pump, be made up of the pump housing and crankcase usually, crankcase is provided with the plunger hole that leads to the pump housing, be connected plunger on the crankshaft-link rod and pass plunger hole and stretch in the pump housing, between the plunger and the pump housing, be provided with sealing configuration; The pump housing is provided with water intake and water outlet, and water intake and water outlet connect through an one-way valve and waterflood path respectively.Its motion mode is, plunger is by the drive of crankshaft-link rod, reciprocating in plunger hole, when the inside indentation of plunger, pressure outside the water intake is greater than internal pressure, the one-way valve of water inlet is opened, and the one-way valve at opposite water outlet place is closed, and current are in the water inlet is drawn into waterflood path; When plunger ejected forward, the hydraulic pressure in the waterflood path was greater than external pressure, and the one-way valve of water outlet is backed down, and the one-way valve of water inlet place is closed, and the pressurized back of current is forced out from the one-way valve place of water outlet; The function of transferring high voltage water is finished in plunger motion and so forth.In the technique scheme, the structural strength of described compressive seal and rigid seal is decided according to the pressure that bears, and compressive seal plays sealing and despumation, should be able to provide enough sealabilities under the setting hydraulic pressure upper limit; Rigid seal plays the skeleton supporting effect, should set the distortion that does not cause seepage under the hydraulic pressure upper limit.When those of ordinary skill in the art knows corresponding to specific hydraulic pressure, how to select the material and the structural strength of satisfactory compressive seal and rigid seal for use.
In the technique scheme, described black box comprises that also one is positioned at second compressive seal at rigid seal rear, is provided with the return flow line between described second compressive seal and the rigid seal, and described plunger ring is provided with the return port that is communicated with the return flow line.Described return port is connected with water intake, and when leaking appearred in soft and hard combination seal at front end, second compressive seal can play the exclusion seal effect of the second layer, prolongs the working life of pump, and water returns the water inlet from the return flow line through return port simultaneously.
Further technological scheme is, the front-end face of described compressive seal is provided with the groove that sectional shape is U type or V-type, and the front-end face of described second compressive seal is provided with the groove that sectional shape is U type or V-type.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1. constitute by compressive seal and rigid seal owing to black box of the present utility model, the first layer compressive seal plays the effect of despumation in sealing, and can see the support frame of compressive seal as with the second layer rigid seal of its engagement connection, resist the hydraulic pressure that the first layer compressive seal bears, make its not undue compressive strain of reason pressurized generation, on the end face of compressive seal, offer simultaneously U or V-type groove, impurity in the water, particulate matter through the inclined-plane by alluviation in groove, improve to filter, intercept the effect of impurity; Therefore soft, both combinations of hard can improve the sealing effect of black box, increase the service life;
2. because black box also includes second compressive seal that is positioned at the rigid seal rear, be provided with the return flow line between the two, when leaking appears in soft and hard combination seal at front end, second compressive seal can play the exclusion seal effect of the second layer, water returns the water inlet from the return flow line through return port simultaneously, and also be provided with the groove of U or V-type on the end face of second compressive seal, flow into the current in the groove, to exert pressure to the two side of groove, thereby more can improve sealing effect, when a small amount of seepage, the pressure that second compressive seal bears is little, and the pump housing can continue proper functioning considerable time;
3. plunger is by connecting rod rotatablely moving of bent axle to be converted to to-and-fro motion, therefore can produce inclination slightly during plunger motion, only make in the prior art with compressive seal and bring difficulty as the sealing of black box, because black box of the present utility model is combined with rigid seal by soft, can play the effect that correct the location to the motion of plunger, improve sealing effect.
Description of drawings
Accompanying drawing 1 is the utility model embodiment one a structural representation;
Accompanying drawing 2 is the use mounting structure schematic representation of Fig. 1;
Accompanying drawing 3 is the perspective exploded view of sealing configuration among Fig. 1.
Wherein: [1], plunger ring; [2], black box; [3], compressive seal; [4], rigid seal; [5], projection; [6], second compressive seal; [7], return flow line; [8], return port; [9], groove; [10], groove.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: shown in accompanying drawing 1 to 3, a kind of high-pressure plunger type pump seal structure, it mainly is made of plunger ring 1 and sheathed thereon black box 2, described black box 2 is by the rubber compressive seal 3 that is positioned at front end, the alloy cast iron rigid seal 4 of compressive seal 3 rear ends and second compressive seal 6 that the is positioned at rigid seal 4 rears composition that superposes successively, the dorsal part of described compressive seal 3, with rigid seal 4 adjacents, be provided with the step that caves inward of annular, the front-end face of described rigid seal 4 is provided with the projection 5 of the dorsal part form fit of shape and compressive seal, and both engage formation and are tightly connected; Be provided with return flow line 7 between described second compressive seal 6 and the rigid seal 4, described plunger ring 1 is provided with the return port 8 that is communicated with return flow line 7.The front-end face that described compressive seal 3 front-end faces are provided with U type groove 9, the second compressive seals 6 is provided with V-type groove 10.
Claims (3)
1. high-pressure plunger type pump seal structure, it mainly is made of plunger ring [1] and sheathed thereon black box [2], it is characterized in that: described black box [2] is made up of rigid seal [4] stack of compressive seal that is positioned at front end [3] and rear end, and the structural strength of described compressive seal [3] is less than the structural strength of rigid seal [4]; The dorsal part of described compressive seal [3], with rigid seal [4] adjacent, be provided with the step that caves inward of annular, the front-end face of described rigid seal [4] is provided with the projection [5] of the dorsal part form fit of shape and compressive seal [3], and both engage formation and are tightly connected.
2. high-pressure plunger type pump seal structure according to claim 1, it is characterized in that: described black box [2] comprises that also one is positioned at second compressive seal [6] at rigid seal [4] rear, be provided with return flow line [7] between described second compressive seal [6] and the rigid seal [4], described plunger ring [1] is provided with the return port [8] that is communicated with return flow line [7].
3. high-pressure plunger type pump seal structure according to claim 2, it is characterized in that: the front-end face of described compressive seal [3] is provided with the groove that sectional shape is U type or V-type [9], and the front-end face of described second compressive seal [6] is provided with the groove that sectional shape is U type or V-type [10].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073209 CN2802123Y (en) | 2005-06-28 | 2005-06-28 | Sealing structure of high pressure plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520073209 CN2802123Y (en) | 2005-06-28 | 2005-06-28 | Sealing structure of high pressure plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2802123Y true CN2802123Y (en) | 2006-08-02 |
Family
ID=36846831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520073209 Expired - Fee Related CN2802123Y (en) | 2005-06-28 | 2005-06-28 | Sealing structure of high pressure plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2802123Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899823A (en) * | 2012-12-27 | 2014-07-02 | 浙江三花股份有限公司 | Electromagnetic valve and connector thereof |
| CN103899823B (en) * | 2012-12-27 | 2016-11-30 | 浙江三花股份有限公司 | A kind of electromagnetic valve and adapter thereof |
| CN108278189A (en) * | 2018-03-20 | 2018-07-13 | 浙江力高泵业科技有限公司 | A kind of No leakage plunger type metering pump |
| CN111927727A (en) * | 2020-08-13 | 2020-11-13 | 苏州小科清洁科技有限公司 | Connecting structure of plunger pump body |
-
2005
- 2005-06-28 CN CN 200520073209 patent/CN2802123Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899823A (en) * | 2012-12-27 | 2014-07-02 | 浙江三花股份有限公司 | Electromagnetic valve and connector thereof |
| CN103899823B (en) * | 2012-12-27 | 2016-11-30 | 浙江三花股份有限公司 | A kind of electromagnetic valve and adapter thereof |
| CN108278189A (en) * | 2018-03-20 | 2018-07-13 | 浙江力高泵业科技有限公司 | A kind of No leakage plunger type metering pump |
| CN111927727A (en) * | 2020-08-13 | 2020-11-13 | 苏州小科清洁科技有限公司 | Connecting structure of plunger pump body |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2802123Y (en) | Sealing structure of high pressure plunger pump | |
| CN201301759Y (en) | Engine cylinder cover seal gasket | |
| CN205315181U (en) | Integrated form diesel engine high pressure common rail fuel injection high -pressure oil pump assembly for system | |
| CN2620110Y (en) | Improved liquid medium diaphragm positive displacement pump | |
| CN112360714A (en) | Plunger pump | |
| CN114151160A (en) | High bearing capacity automobile valve tappet body part | |
| CN2348096Y (en) | Liquid carbon dioxide injection device | |
| CN210397069U (en) | High-pressure plunger pump for cleaning machine | |
| CN2823716Y (en) | Ball valve | |
| CN2348144Y (en) | Double-stroke oil-well pump | |
| CN205383072U (en) | Plunger pump packing device | |
| CN2401735Y (en) | Buffer valve | |
| CN220749175U (en) | Metal valve seat structure for natural gas pipeline | |
| CN2199374Y (en) | Self-sealed plunger packing seal for reciprocating pump | |
| CN216653646U (en) | Engine oil filter cylinder with novel sealing installation structure | |
| CN2625179Y (en) | Rear shock-absorber for sedan | |
| CN115013276B (en) | Reciprocating pump with vertical operation piston valve group hydraulic end at horizontal power end | |
| CN2779167Y (en) | Blast furnace roof coal gas pressure equalizing valve | |
| CN217682203U (en) | Diaphragm pump working chamber seal structure | |
| CN217501940U (en) | Diaphragm pump component for flushing device | |
| CN2550576Y (en) | Reinforced seal leakless valve | |
| CN219587834U (en) | Double-check structure of water pump | |
| CN114871032B (en) | Quick detachable high-pressure water jet nozzle replacement mechanism | |
| CN215110513U (en) | Novel sealing structure of plunger pump | |
| CN214577570U (en) | Ceramic plunger slurry pump |
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 |
Granted publication date: 20060802 Termination date: 20140628 |
|
| EXPY | Termination of patent right or utility model |