CN203948281U - A kind of concrete piston sealing body and concrete pump - Google Patents
A kind of concrete piston sealing body and concrete pump Download PDFInfo
- Publication number
- CN203948281U CN203948281U CN201420358114.9U CN201420358114U CN203948281U CN 203948281 U CN203948281 U CN 203948281U CN 201420358114 U CN201420358114 U CN 201420358114U CN 203948281 U CN203948281 U CN 203948281U
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- China
- Prior art keywords
- layer
- cylindrical shell
- sealing body
- lip
- concrete piston
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- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000002982 water resistant material Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 102
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 abstract description 7
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 238000010587 phase diagram Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 229920003225 polyurethane elastomer Polymers 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000004970 Chain extender Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004304 visual acuity Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 238000010094 polymer processing Methods 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
Landscapes
- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a kind of concrete piston sealing body and concrete pump.This concrete piston sealing body comprises cylindrical shell layer and lip layer, and described cylindrical shell layer and described lip layer interfix, and described lip layer is positioned at end or the outside of described cylindrical shell layer.Cylindrical shell layer of the present utility model and lip layer can adopt different materials, preferably cylindrical shell layer is made up of oil resisting material, and lip layer is made up of water-resistant material, can possess elasticity and intensity simultaneously, and not only oil resistant solution but also hydrolysis resistance, has the advantages such as good airproof performance, wear resistance are strong, long service life.
Description
Technical field
The utility model relates generally to concrete works field of mechanical technique, specifically, relates to a kind of concrete piston sealing body, and is provided with the concrete pump of this concrete piston sealing body.
Background technique
Concrete piston is at the vitals using as concrete mixer, in dragging the pumping mechanism of the concrete pump such as pump, Vehicle loaded pump.Concrete piston is positioned at carries cylinder, connects master cylinder by connecting rod, and under the driving of master cylinder, concrete piston moves back and forth in conveying cylinder, to realize concrete suction action.
Concrete piston sealing body is fixed on piston body, can ensure concrete piston and carry the sealing between the inside wall of cylinder in the reciprocating while.The concrete piston sealing body of prior art generally comprises cylindrical shell and lip, and lip forms disc structure, contiguous cylindrical shell one side of small end of this disc structure.In the time of work, lip contacts with water, and cylindrical shell contacts with oil.
The large multiplex polyurethane elastomer of current concrete piston sealing body or rubber are made, and in order to reach sealing effect, carry the inside wall of cylinder and concrete piston sealing body (especially dish-shaped lip) to produce very large extruding force, and the wearing and tearing of concrete piston sealing body are larger.In addition, severe due to concrete piston sealing body working environment complexity, operating mode, adapt to different pumping pressures, rate of pumping and slump, therefore requiring, under the prerequisite that keeps good sealing, increases the intensity of concrete piston sealing body, and then reduces wearing and tearing.
In prior art, can strengthen by improving polyurethane elastomer self performance, but room for promotion is small; In addition, also can be by increase glass in polyurethane elastomer, or strengthen at rubber inner clip cloth, but complex process, manufacturing efficiency is low.
In addition, the general structure being integrally formed that adopts of the concrete piston sealing body of prior art, each several part material that structure is used is consistent, and designability is low, can only be adjusted and be improved adaptability by formula.In addition, be also difficult to possess the required elasticity of concrete piston sealing body simultaneously and adapt to the intensity of bad working environments, not only oil resistant solution but also hydrolysis resistance.
Model utility content
In view of this, the purpose of this utility model is to provide a kind of concrete piston sealing body, can solve in prior art, be difficult to possess simultaneously the defect of elasticity and intensity, not only oil resistant solution but also hydrolysis resistance or at least one of them.
Concrete piston sealing body of the present utility model, comprises independently cylindrical shell layer and lip layer, and described cylindrical shell layer and described lip layer interfix, and described lip layer is positioned at end or the outside of described cylindrical shell layer.
Further, described cylindrical shell layer is made up of oil resisting material, and described lip layer is made up of water-resistant material.
Further, the hardness of described cylindrical shell layer is greater than the hardness of described lip layer.
Further, described cylindrical shell layer is made up of PAUR.
Further, described lip layer is made up of EU.
Further, described lip layer is positioned at the end of described cylindrical shell layer, between described lip layer and described cylindrical shell layer, is directly fixedly connected with.
Further, described lip layer is positioned at the outside of described cylindrical shell layer, and described lip layer comprises barrel and the lip part of one.
Further, between described lip layer and described cylindrical shell layer, comprise adhesive layer.
Further, on the outer wall of described cylindrical shell layer, be provided with many annular grooves.
Another aspect of the present utility model, also provides a kind of concrete pump, comprises and carries cylinder and be arranged at the concrete piston in described conveying cylinder, is provided with the concrete piston sealing body of aforementioned any one on described concrete piston.
Concrete piston sealing body of the present utility model, comprises independently cylindrical shell layer and lip layer, can adopt different designs to them, and can make corresponding change according to actual service condition, and designability is high.
According to concrete usage requirement, the utility model can adopt hard high-strength material to make cylindrical shell layer further, improves the bulk strength of seal, and can strengthen its anti-hydraulic oil resolving power, ensures wear resistance.
Further, the utility model also can adopt highly resilient material to make lip layer, strengthens the sealing of seal, while ensureing, after wearing and tearing, lip is applied to less pressure, still can seal.Simultaneously, adopt high elasticity lip, can effectively suppress the impact of lateral force on concrete piston, also can make concrete piston sealing body diminish with carrying cylinder positive pressure, and then reduce both friction, increase the service life, and can reduce the generation of heat, reduce the impact of high temperature on material (as polyurethane) self performance.
In addition, concrete piston sealing body of the present utility model also can adopt current cast shaping process manufacture, has ensured original manufacturing efficiency, has advantages of easy to implement.
Brief description of the drawings
The accompanying drawing that forms a part of the present utility model is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the utility model the first embodiment's concrete piston sealing body;
Fig. 2 is the first phase diagram of the utility model first embodiment's moulding by casting;
Fig. 3 is the second phase diagram of the utility model first embodiment's moulding by casting;
Fig. 4 is the structural representation of the utility model the second embodiment's concrete piston sealing body;
Fig. 5 is the first phase diagram of the utility model second embodiment's moulding by casting;
Fig. 6 is the second phase diagram of the utility model second embodiment's moulding by casting.
Description of reference numerals:
1 cylindrical shell layer
2 lip layers
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the utility model can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
Shown in Fig. 1, be the structural representation of the utility model the first embodiment's concrete piston sealing body, this concrete piston sealing body comprises independently cylindrical shell layer 1 and lip layer 2, and cylindrical shell layer 1 interfixes with lip layer 2, and lip layer 2 is positioned at the end of cylindrical shell layer 1.Unitary construction after cylindrical shell layer 1 is fixing with lip layer 2 similarly to the prior art, but distinguishes with the structure that is integrally formed of the prior art.
In the time of work, aforementioned cylindrical shell layer 1 contacts with oil, and lip layer 2 contacts with water, can adopt different designs to them, and can make corresponding change according to actual service condition, and designability is high.Preferably cylindrical shell layer 1 is made up of oil resisting material, and lip layer 2 is made up of water-resistant material, ensures this concrete piston sealing body not only hydrolysis resistance but also oil resistant solution.Or preferably the hardness of cylindrical shell layer 1 is greater than the hardness of lip layer 2, ensure that concrete piston sealing body possesses elasticity and intensity simultaneously.They adopt respectively different materials, and the material (be generally EU etc.) single with available technology adopting manufactured concrete piston sealing body and distinguished.
Concrete piston sealing body of the present utility model can adopt multiple possible oil resisting material and water-resistant material.Preferably cylindrical shell layer 1 is made up of PAUR, has the characteristic of hard high-strength oil resistant solution; In addition, preferably lip layer 2 is made up of EU, has the characteristic of low hardness high elasticity hydrolysis resistance.
On the basis of above-described embodiment technological scheme, this cylindrical shell layer 1 can improve the bulk strength of seal, and can strengthen its anti-hydraulic oil resolving power, ensures wear resistance.In addition, this lip layer 2 can strengthen the sealing of seal, while ensureing, after wearing and tearing, lip is applied to less pressure, still can seal.Meanwhile, adopt high elasticity lip, can effectively suppress the impact of lateral force on concrete piston, also can make concrete piston sealing body diminish with carrying cylinder positive pressure, and then reduce both frictions, increase the service life, and can reduce the generation of heat, reduce the impact of high temperature on material self performance.
More specifically, as shown in Figure 1, cylindrical shell layer 1 can be cylinder-like structure, and lip layer 2 can be the disc structure that comprises perforate, the contiguous cylindrical shell layer 1 of small end of disc structure, and in the time of work, the large end of disc structure contacts and produces sliding friction with the inwall of carrying cylinder.The operation that cooperatively interacts of the concrete piston sealing body of this structure and conveying cylinder cylindraceous.
In addition, preferably between the lip layer 2 in the first embodiment and cylindrical shell layer 1, be directly fixedly connected with, they can be fixed by the linkage force between molecule.During due to work, be mainly that lip is stressed, in this embodiment, lip layer 2 is vertical with stress surface with the mating face of cylindrical shell layer 1, therefore under the prerequisite of Direct Bonding, can meet usage requirement.
The first embodiment's concrete piston sealing body can be manufactured by multiple possible mode, as a kind of mode of execution, can adopt current cast shaping process manufacture, has ensured original manufacturing efficiency, has advantages of easy to implement.
Now, in conjunction with Fig. 2 and Fig. 3, the manufacture method of the concrete piston sealing body to the first embodiment describes, and it mainly comprises the steps:
1) mould is applied after releasing agent, put into baking oven and be preheated to 130 DEG C;
2) base polyurethane prepolymer for use as raw material and curing agent to be cast are heated to optimum temperature;
3) be poured in mould after polyethers based polyurethane performed polymer is mixed under set point of temperature with chain extender, stop cast after being poured into regulation liquid level, with reference to figure 2;
4) in the time that this raw material is gel state, (while adding other liquid, can not obscure), the mixing material of PAUR performed polymer and chain extender is poured in mould, with reference to figure 3;
5) mould and raw material are incubated to 1h at 130 DEG C;
6) solidify, demoulding deburring after moulding;
7) by print postcure 10h at 100 DEG C;
8) after postcure completely, take out sample, size is carried out machine and is added processing in accordance with regulations.
Should be clear, the process parameter (as temperature, time) in above steps etc. can suitably be adjusted, and can omit a step or a few step wherein.
It shown in Fig. 4, is the structural representation of the utility model the second embodiment's concrete piston sealing body.Identical with the first embodiment, this concrete piston sealing body comprises independently cylindrical shell layer 1 and lip layer 2, and cylindrical shell layer 1 interfixes with lip layer 2.Different, in the second embodiment, lip layer 2 is positioned at the outside of cylindrical shell layer 1.
The second embodiment similarly distinguishes with the structure that is integrally formed of the prior art, can adopt respectively different designs from lip layer 2 to cylindrical shell layer 1.
Preferably the hardness of cylindrical shell layer 1 is greater than the hardness of lip layer 2, and the cylindrical shell layer 2 of high hardness runs through whole concrete piston sealing body, can ensure that it possesses elasticity and intensity simultaneously.More specifically, preferably cylindrical shell layer 1 is made up of PAUR, has the characteristic of hard high-strength; Preferably lip layer 2 is made up of EU, has the characteristic of low hardness high elasticity hydrolysis resistance.The second embodiment similarly has advantages of the aspects such as good airproof performance, wear resistance are strong, long service life.More specifically, as shown in Figure 4, lip layer 2 comprises barrel and the lip part of one, the contiguous barrel of small end of lip part, cylindrical shell layer 1 is positioned at the inner side of aforementioned barrel, and in the time of work, the large end of aforementioned lip part contacts and produce sliding friction with the inwall of carrying cylinder.
Aforementionedly illustrate, be mainly that lip is stressed in the time of work, and in this second embodiment, lip layer 2 is parallel with stress surface with the mating face of cylindrical shell layer 1.In order to improve adhesive strength, between lip layer 2 and cylindrical shell layer 1, comprise adhesive layer, lip layer 2 is fixedly connected with indirectly with cylindrical shell layer 1.
Further, also can on the outer wall of cylindrical shell layer 1, be provided with many annular grooves.Correspondingly, can form the annular protrusion coordinating with annular groove in the inner side of lip layer 2, also can improve adhesive strength by the engagement between them, meet the usage requirement of concrete piston sealing body.
Identical with the first embodiment, the second embodiment also preferably adopts current cast shaping process manufacture, specifically can be in conjunction with Fig. 5 and Fig. 6.Mould and die preheating and performed polymer processing can be with reference to above stated specification.Different, in the second embodiment, need to adopt the first mould and the second mould.As shown in Figure 5, in the first mould, pour into a mould cylindrical shell layer 1, be coated with adhesive at curing and demolding, machine adduction; As shown in Figure 6, then cylindrical shell layer 1 is packed into the second mould internal layer, after mould and die preheating at outer pouring lip mouth layer 2.The steps such as the follow-up demoulding, deburring, postcure, machine adds can be with reference to above stated specification.
External except the concrete piston seal of previous embodiment, the utility model also provides a kind of concrete pump, comprises and carries cylinder and be arranged at the concrete piston in this conveying cylinder, is provided with the concrete piston sealing body of previous embodiment on this concrete piston.
This concrete pump can be concrete mixer, drag pump, Vehicle loaded pump etc., and the structure of other parts can, with reference to existing and improved technology, not repeat them here herein.Owing to adopting the concrete piston sealing body of previous embodiment, can possess elasticity and intensity simultaneously, and not only oil resistant solution but also hydrolysis resistance, good airproof performance, wear resistance is strong, and long service life has significant beneficial effect.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a concrete piston sealing body, it is characterized in that, comprise cylindrical shell layer (1) and lip layer (2), described cylindrical shell layer (1) interfixes with described lip layer (2), and described lip layer (2) is positioned at end or the outside of described cylindrical shell layer (1).
2. concrete piston sealing body according to claim 1, is characterized in that, described cylindrical shell layer (1) is made up of oil resisting material, and described lip layer (2) is made up of water-resistant material.
3. concrete piston sealing body according to claim 1, is characterized in that, the hardness of described cylindrical shell layer (1) is greater than the hardness of described lip layer (2).
4. concrete piston sealing body according to claim 1, is characterized in that, described cylindrical shell layer (1) is made up of PAUR.
5. concrete piston sealing body according to claim 1, is characterized in that, described lip layer (2) is made up of EU.
6. according to the concrete piston sealing body described in claim 1-5 any one, it is characterized in that, described lip layer (2) is positioned at the end of described cylindrical shell layer (1), between described lip layer (2) and described cylindrical shell layer (1), is directly fixedly connected with.
7. according to the concrete piston sealing body described in claim 1-5 any one, it is characterized in that, described lip layer (2) is positioned at the outside of described cylindrical shell layer (1), and described lip layer (2) comprises barrel and the lip part of one.
8. concrete piston sealing body according to claim 7, is characterized in that, between described lip layer (2) and described cylindrical shell layer (1), comprises adhesive layer.
9. concrete piston sealing body according to claim 7, is characterized in that, on the outer wall of described cylindrical shell layer (1), is provided with many annular grooves.
10. a concrete pump, comprises and carries cylinder and be arranged at the concrete piston in described conveying cylinder, it is characterized in that, is provided with the concrete piston sealing body described in claim 1-9 any one on described concrete piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420358114.9U CN203948281U (en) | 2014-06-30 | 2014-06-30 | A kind of concrete piston sealing body and concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420358114.9U CN203948281U (en) | 2014-06-30 | 2014-06-30 | A kind of concrete piston sealing body and concrete pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948281U true CN203948281U (en) | 2014-11-19 |
Family
ID=51890319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420358114.9U Expired - Lifetime CN203948281U (en) | 2014-06-30 | 2014-06-30 | A kind of concrete piston sealing body and concrete pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948281U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223353A (en) * | 2016-12-21 | 2018-06-29 | 罗伯特·博世有限公司 | Piston pump, particularly for the high-pressure fuel pump of internal combustion engine |
| CN113790152A (en) * | 2021-07-27 | 2021-12-14 | 合肥精创科技有限公司 | Slurry pump piston rubber and preparation method thereof |
| CN114370502A (en) * | 2022-01-11 | 2022-04-19 | 江苏徐工工程机械研究院有限公司 | Multilayer composite concrete piston sealing body and preparation method thereof |
-
2014
- 2014-06-30 CN CN201420358114.9U patent/CN203948281U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223353A (en) * | 2016-12-21 | 2018-06-29 | 罗伯特·博世有限公司 | Piston pump, particularly for the high-pressure fuel pump of internal combustion engine |
| CN113790152A (en) * | 2021-07-27 | 2021-12-14 | 合肥精创科技有限公司 | Slurry pump piston rubber and preparation method thereof |
| CN114370502A (en) * | 2022-01-11 | 2022-04-19 | 江苏徐工工程机械研究院有限公司 | Multilayer composite concrete piston sealing body and preparation method thereof |
| CN114370502B (en) * | 2022-01-11 | 2023-12-08 | 江苏徐工工程机械研究院有限公司 | Multilayer composite concrete piston sealing body and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141119 |
|
| CX01 | Expiry of patent term |