CN201496257U - Piston system of piston pump provided with split type rear cover - Google Patents
Piston system of piston pump provided with split type rear cover Download PDFInfo
- Publication number
- CN201496257U CN201496257U CN2009202334571U CN200920233457U CN201496257U CN 201496257 U CN201496257 U CN 201496257U CN 2009202334571 U CN2009202334571 U CN 2009202334571U CN 200920233457 U CN200920233457 U CN 200920233457U CN 201496257 U CN201496257 U CN 201496257U
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- CN
- China
- Prior art keywords
- piston
- sleeve
- hold down
- down sleeve
- rear cover
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- 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
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Abstract
The utility model discloses a piston system of a piston pump which is provided with a split type rear cover. A piston rear cover of the system is arranged to be a split inner hold down sleeve and an outer hold down sleeve. Free distance is remained between the inner hold down sleeve and the outer hold down sleeve. The utility model resolves the problem that a piston sealing washer of an existing high pressure grouting piston pump is often scratched by hardened slurries, the replacing times of the sealing washer are decreased, so that the piston pump can be in a good operating state for a long time, the medium grouting quality and the working efficiency of a machine are improved. In the utility model, the processing difficulty of the original rear cover is decreased greatly, the rear cover is arranged in splitting, a certain free distance is remained between the inner hold down sleeve and the outer hold down sleeve, thereby the close fit with a piston rod not only can be ensured, the larger workpiece error is also accommodated. In addition, the specification of the other components of the piston system need not to be changed, the components can be replaced directly. Moreover, the inner hold down sleeve with less volume can be made of high wear materials and is fit with the piston rod closely to endure wear, thus the service life of the piston system can be prolonged.
Description
Technical field
The utility model relates to plunger pump, and the plunger pump piston system of split type bonnet particularly is set.
Background technique
Plunger pump is a necessary special device in urban construction, water conservancy, the construction of hydropower plant.Particularly high-pressure slip-casting plunger pump, mud, mortar injection plunger pump all are the to-and-fro motion by the plunger pump piston, medium are injected among ground weak link or the building tear effect of play leak stopping, strengthening ground or reinforce building.During modern project was built, in order to make leak stopping and consolidation effect better, the normal employing of the slurry of being annotated setting and hardening rapidly became solid-state chemical material.But, the chemical material of this property in the working procedure of slip casting, often the time not length that the seal washer of piston will take place is destroyed, and the phenomenon that causes leaking behind the slurry takes place, and causes the machine can't proper functioning even.This is because piston during the reciprocal propelling of high pressure, has juice inevitably and leaks backward from seal washer, in the slot of piston bonnet and piston rod fit tolerance.Chemical sizwe is present in very fast sclerosis the between the slot of fit tolerance, and be stained with and be bonded on the piston rod, piston rod is again to thrust under high pressure conditions, causes the hardening thing on the piston rod can scratch seal washer easily, and the back leakage situation of slurry is just serious all the more like this.At present, solve this vicious circle that goes round and begins again, have only machine is stopped, cleaning piston bar again, the seal washer that more renews, however frequent shutdown not only influences the engineering grouting quality, and reduced working efficiency.
Summary of the invention
The utility model has proposed a kind of plunger pump piston system that split type bonnet is set at above-mentioned existing problems, and purpose is by the piston rear cover structure is improved, to realize the normal operation of plunger pump.
Technical solution of the present utility model:
Existing piston system mainly is made up of cylinder body, piston rod, seal washer, bonnet, and wherein bonnet is that friction top and sleeve are the unitary whole part, and jacket casing and is established outer screw thread outside piston rod, be screwed on the cylinder body.The utility model improves the piston bonnet, be about to interior clamp sleeve and external compression sleeve that bonnet is set to split, the preceding gland of interior clamp sleeve and seal washer are fitted, and its sleeve body is enclosed within outside the piston rod, and integral body stretches in the external compression sleeve, and exposure is outside the rear pressing cover of external compression sleeve; The cylindrical shell end of external compression sleeve withstands on the preceding gland of interior clamp sleeve.In addition: leave free distance between the inside and outside clamp sleeve.
The beneficial effects of the utility model:
(1) the utility model is because bonnet is set to split type, make former fit tolerance position between piston rod and whole bonnet that change take place, in the free distance in the fit tolerance of former bonnet is transferred between clamp sleeve outer wall and the external compression sleeve lining, this fit tolerance and piston rod operation are irrelevant, only be stained with sticking hardening thing seldom on the piston rod, and it is back and forth in service at piston, fallen by automatic removing of interior clamping sleeve cylindrical shell front end, seal washer no longer is damaged, still keep the good sealability of seal washer, plunger pump can be in the good working order for a long time, improve the working efficiency of medium pouring quality and machine greatly;
(2) though the utility model is simple in structure, greatly reduce the difficulty of processing of former bonnet, back cover split-type setting leaves certain free distance between the inside and outside clamp sleeve, can guarantee and the drive fit of piston rod, has held bigger workpiece error again;
(3) the utility model can adopt high abrasion resisting material to make to the less interior clamp sleeve of volume, and itself and piston rod are made drive fit friction, the operating life that can prolong piston system;
(4) assembling of the utility model bonnet does not need to change the specification size of other assemblies of piston system, can directly replace use;
(5) the utility model has significantly reduced the replacing number of times of piston system seal washer, the saving of labor, saves time.
Description of drawings
The interior clamp sleeve of the split type bonnet of accompanying drawing 2 the utility model and the structural representation of external compression sleeve;
Accompanying drawing 3 is the structural representation of the utility model piston system.
Embodiment
As shown in Figure 1,
The piston system of prior art plunger pump comprises cylinder body 1, piston rod 2, seal washer 3, bonnet 4, and bonnet is by friction top and sleeve unitary whole part.There is fit tolerance 5 between bonnet and the piston rod.
Shown in Fig. 2,3,
The utility model bonnet be set to split, by the single piece that interior clamp sleeve 41 and external compression sleeve 42 constitute, interior clamp sleeve stretches in the external compression sleeve.The preceding gland 411 of interior clamp sleeve is fitted with seal washer 3; Interior clamping sleeve cylindrical shell 412 is enclosed within outside the piston rod 2, and integral body stretches in the external compression sleeve, and the exposure of sleeve body end is outside the rear pressing cover 421 of external compression sleeve; The end of the cylindrical shell 422 of external compression sleeve withstands on the preceding gland 411 of interior clamp sleeve.In addition, leave free distance 43 between the inwall of external compression sleeve and the interior clamp sleeve outer wall, bonnet and and piston rod between fit tolerance comprise wherein.
The utility model is installed appropriate piston system by Fig. 2,3 requirements, and plunger pump can come into operation.Through repeatedly on probation, the utility model has reached the expection goal of the invention.
Claims (3)
1. the plunger pump piston system of split type bonnet is set, mainly is made up of cylinder body, piston rod, seal washer, bonnet, it is characterized in that: its bonnet is set to the interior clamp sleeve and the external compression sleeve of split.
2. the plunger pump piston system that split type bonnet is set according to claim 1, it is characterized in that: the preceding gland of its interior clamp sleeve and seal washer are fitted, and its sleeve body is enclosed within outside the piston rod, and integral body stretches in the external compression sleeve, and the exposure of sleeve body end is outside the rear pressing cover of external compression sleeve; The cylindrical shell end of external compression sleeve withstands on the preceding gland of interior clamp sleeve.
3. the plunger pump piston system that split type bonnet is set according to claim 1 and 2 is characterized in that: leave free distance between the inwall of described external compression sleeve and the interior clamp sleeve outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202334571U CN201496257U (en) | 2009-07-22 | 2009-07-22 | Piston system of piston pump provided with split type rear cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202334571U CN201496257U (en) | 2009-07-22 | 2009-07-22 | Piston system of piston pump provided with split type rear cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496257U true CN201496257U (en) | 2010-06-02 |
Family
ID=42439465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202334571U Expired - Fee Related CN201496257U (en) | 2009-07-22 | 2009-07-22 | Piston system of piston pump provided with split type rear cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634296B (en) * | 2009-07-22 | 2011-08-10 | 鲍春 | High-pressure slurry-casting ram pump piston system with split rear cover |
-
2009
- 2009-07-22 CN CN2009202334571U patent/CN201496257U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634296B (en) * | 2009-07-22 | 2011-08-10 | 鲍春 | High-pressure slurry-casting ram pump piston system with split rear cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20110722 |