CN204024966U - A kind of corrosion-resistant reciprocating vacuum pump - Google Patents
A kind of corrosion-resistant reciprocating vacuum pump Download PDFInfo
- Publication number
- CN204024966U CN204024966U CN201420406114.1U CN201420406114U CN204024966U CN 204024966 U CN204024966 U CN 204024966U CN 201420406114 U CN201420406114 U CN 201420406114U CN 204024966 U CN204024966 U CN 204024966U
- Authority
- CN
- China
- Prior art keywords
- end cap
- piston
- corrosion
- vacuum pump
- engineering plastics
- 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
- 230000007797 corrosion Effects 0.000 title claims abstract description 41
- 238000005260 corrosion Methods 0.000 title claims abstract description 41
- 229920006351 engineering plastic Polymers 0.000 claims abstract description 75
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 239000011159 matrix material Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 10
- 239000007769 metal material Substances 0.000 claims description 8
- 238000005086 pumping Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 230000008859 change Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Landscapes
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model provides a kind of corrosion-resistant reciprocating vacuum pump, belongs to pumping equipment technical field.It solve the not corrosion resistant problem of existing compound vacuum pump.This corrosion-resistant reciprocating vacuum pump, comprise the pump housing, piston is provided with in the pump chamber of the pump housing, pump housing two ends are fixedly connected with upper end cap and lower end cap respectively, and piston is connected with driving mechanism by piston rod, and piston rod is through lower end cap, pump housing inwall has the liner that engineering plastics are made, outer surface of piston is coated with engineering plastic casing, and the inner side surface of upper end cap and lower end cap all has the attached layer of engineering plastics, is all coated with engineering plastics in pump chamber with physical contact between media position.Originally the pump housing inwall of corrosion-resistant reciprocating vacuum pump has the liner that engineering plastics are made, and outer surface of piston is coated with engineering plastic casing, and the inner side surface of upper end cap and lower end cap all has the attached layer of engineering plastics, and decay resistance is better.
Description
Technical field
The utility model belongs to pumping equipment technical field, relates to a kind of reciprocating vacuum pump, particularly a kind of corrosion-resistant reciprocating vacuum pump.
Background technique
Reciprocating vacuum pump is also known as piston type vacuum pump, and it relies on the piston reciprocates in cylinder to suck with Exhaust Gas.Reciprocating vacuum pump. there are horizontal and vertical two classes.But conventional is vertical piston vacuum pump, piston vacuum pump have again single cylinder and twin-tub point, the structure of its outlet valve has fixing valve type and free valve type.Reciprocating vacuum pump is widely used in the production processes such as oil, chemical industry, medical treatment, metallurgy, papermaking, food.Such as, vacuum takes out material, vacuum evaporation, Vacuum Concentration, vacuum outgas etc.
Existing reciprocating vacuum pump mainly adopts metallic material to make, the coating of the other materials at metal material surface plating thin layer also had.Such as, Chinese patent [application number 01231826.4; Authorization Notice No. CN2510647Y] disclosed a kind of special reciprocating vacuum pump, four coupling bars on support and nut is anchored on by equal angles, by at the bottom of cylinder, cylinder block, cylinder head be vertically fixed on support successively, the piston of cylinder block inner chamber is connected with linking mechanism by running through the piston rod of center hole at the bottom of cylinder, outside piston circle is sealed with guide ring and cylinder block inner round wall mutually by the piston ring made of composite material, and can pump wherein.
Above-mentioned special reciprocating vacuum pump Problems existing is: metal cylinder block and piston are after a long time use, particularly under the environment that corrosivity is stronger, easily be corroded, cause reciprocating vacuum pump hydraulic performance decline very fast, need often to change component, therefore working life shorten greatly.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of corrosion-resistant reciprocating vacuum pump, and the technical problem that the utility model solves how to improve reciprocating vacuum pump corrosion resistance.
The purpose of this utility model realizes by following technical proposal: a kind of corrosion-resistant reciprocating vacuum pump, comprise the pump housing, piston is provided with in the pump chamber of the described pump housing, described pump housing two ends are fixedly connected with upper end cap and lower end cap respectively, described piston is connected with driving mechanism by piston rod, described piston rod is through lower end cap, it is characterized in that, described pump housing inwall has the liner that engineering plastics are made, described outer surface of piston is coated with engineering plastic casing, the inner side surface of described upper end cap and lower end cap all has the attached layer of engineering plastics, all engineering plastics are coated with physical contact between media position in described pump chamber.
The important spare parts such as the pump housing of this corrosion-resistant reciprocating vacuum pump, piston, upper end cap and lower end cap all adopt metallic material to make, pump housing inwall has the liner that engineering plastics are made, outer surface of piston is coated with engineering plastic casing, the inner side surface of upper end cap and lower end cap all has the attached layer of engineering plastics, thus make the flow-passing surface that can contact with gas medium in whole pump chamber be engineering plastics to make, avoid the erosion of corrosive medium to component surface.This corrosion-resistant reciprocating vacuum pump maintains the high and resistant to elevated temperatures characteristic of intensity that metal vacuum pump has, while be also provided with good decay resistance, use under being specially adapted to corrosive gas environment.
In above-mentioned corrosion-resistant reciprocating vacuum pump, described liner and pump housing inwall drive fit.After long-time use, liner accidental damage or aging after, liner changing easily can be taken out, under being applicable to the stronger gaseous environment of corrosivity, avoiding and change whole component, extend the working life of vacuum pump, provide cost savings.
Alternatively, in above-mentioned corrosion-resistant reciprocating vacuum pump, described pump housing inwall has in swallow-tailed locating slot, described liner has the positioning block be connected in above-mentioned locating slot.Liner is fixed by the cooperation of locating slot and positioning block, and the fastness that liner and pump housing inwall combine is higher.
In above-mentioned corrosion-resistant reciprocating vacuum pump, described piston comprises the matrix that metallic material is made, and described engineering plastic casing covers on whole described matrix, and described engineering plastic casing circumferential surface has several piston ring grooves.Engineering plastic casing covers outside matrix completely, improves the corrosion resistance of piston.
As preferably, in above-mentioned corrosion-resistant reciprocating vacuum pump, the circumferential surface of described matrix has lug boss in the form of a ring.Lug boss on matrix more can be conducive to the combination of engineering plastic casing and matrix.
In above-mentioned corrosion-resistant reciprocating vacuum pump, described piston rod is passed piston and is fixed by nut and piston, and described piston rod can stretch on one section of outer wall in pump chamber has the engineering plastic bed of material, and described nut outer surfaces has the engineering plastic bed of material.The effect of protection component from corrosion is played by the engineering plastic bed of material.
In above-mentioned corrosion-resistant reciprocating vacuum pump, described upper end cap has air intake passage one and exhaust passage one, and the attached layer of engineering plastics of described upper end cap extends on air intake passage one and exhaust passage one inwall; Described lower end cap has air intake passage two and exhaust passage two, and the attached layer of engineering plastics of described lower end cap extends on air intake passage two and exhaust passage two inwall.Air intake passage one and exhaust passage one and air intake passage two and exhaust passage two are all positioned at the upper and lower end parts of the pump housing, and engineering plastics cover whole flow channels.
As preferably, in above-mentioned corrosion-resistant reciprocating vacuum pump, the matrix of described piston has in swallow-tailed locating slot, described engineering plastic casing has the positioning block be connected in above-mentioned locating slot; Described upper end cap and the lower end cap position corresponding with the attached layer of engineering plastics have in swallow-tailed locating slot, and described engineering plastics attached layer inner side surface has the positioning block coordinated with above-mentioned locating slot.By the cooperation of positioning block and locating slot, the combination of engineering plastics and metallic material is more firm.
Compared with prior art, the advantage of this corrosion-resistant reciprocating vacuum pump is:
1, the pump housing inwall of this corrosion-resistant reciprocating vacuum pump has the liner that engineering plastics are made, and outer surface of piston is coated with engineering plastic casing, and the inner side surface of upper end cap and lower end cap all has the attached layer of engineering plastics, and decay resistance is better.
2, the liner of this corrosion-resistant reciprocating vacuum pump and pump housing inwall drive fit, liner is replaceable, avoids the whole component of replacing, extends the working life of vacuum pump, provide cost savings.
3, the air intake passage one of this corrosion-resistant reciprocating vacuum pump and exhaust passage one and air intake passage two and exhaust passage two are all positioned at the upper and lower end parts of the pump housing, are more conducive to the layout of engineering plastics, achieve whole flow channels and are engineering plastics and make.
Accompanying drawing explanation
Fig. 1 is the pump body structural representation of this corrosion-resistant reciprocating vacuum pump.
Fig. 2 is the sectional structure schematic diagram of the piston of this corrosion-resistant reciprocating vacuum pump.
Fig. 3 is the sectional structure schematic diagram of the piston of this corrosion-resistant reciprocating vacuum pump in embodiment two.
In figure, 1, the pump housing; 11, pump chamber; 12, liner; 2, piston; 21, piston rod; 22, matrix; 221, lug boss; 3, upper end cap; 31, air intake passage one; 32, exhaust passage one; 4, lower end cap; 41, air intake passage two; 42, exhaust passage two; 5, engineering plastic casing; 51, piston ring groove; 6, the attached layer of engineering plastics; 7, nut.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
Embodiment one:
This corrosion-resistant reciprocating vacuum pump, comprises the attached layer 6 of the pump housing 1, upper end cap 3, lower end cap 4, piston 2, piston rod 21, liner 12, engineering plastic casing 5 and engineering plastics.
Specifically, as shown in Figure 1, upper end cap 3 and lower end cap 4 are respectively by the two ends being bolted to the pump housing 1, and piston 2 is arranged in the pump chamber 11 of the pump housing 1, and piston 2 is connected with driving mechanism by piston rod 21, and piston rod 21 is through lower end cap 4.The pump housing 1 inwall has the liner 12 that engineering plastics are made, in the present embodiment, liner 12 and the pump housing 1 inwall drive fit.After long-time use, liner 12 be corroded or aging after, liner 12 changing easily can be taken out, under being applicable to the stronger gaseous environment of corrosivity, avoiding and change whole component, extend the working life of vacuum pump, provide cost savings.
As depicted in figs. 1 and 2, piston 2 comprises the matrix 22 that metallic material is made, and piston 2 outer surface is coated with engineering plastic casing 5, and engineering plastic casing 5 covers on whole matrix 22, engineering plastic casing 5 circumferential surface has several piston ring grooves 51.Engineering plastic casing 5 covers outside matrix 22 completely, improves the corrosion resistance of piston 2.As shown in Figure 1; piston rod 21 is also fixed by nut 7 and piston 2 through piston 2; piston rod 21 can stretch on one section of outer wall in pump chamber 11 has the engineering plastic bed of material, and nut 7 outer surface has the engineering plastic bed of material, plays the effect of protection component from corrosion by the engineering plastic bed of material.Preferably, the matrix 22 of piston 2 has in swallow-tailed locating slot, engineering plastic casing 5 has the positioning block be connected in locating slot.
As shown in Figure 1, upper end cap 3 has air intake passage 1 and exhaust passage 1, and lower end cap 4 has air intake passage 2 4241 and exhaust passage two.The inner side surface of upper end cap 3 all has the attached layer 6 of engineering plastics, and the attached layer 6 of engineering plastics extends on air intake passage 1 and exhaust passage 1 inwall; The inner side surface of lower end cap 4 all has the attached layer 6 of engineering plastics, and the attached layer 6 of engineering plastics extends on air intake passage 2 4241 and exhaust passage two inwall.Air intake passage 1 and exhaust passage 1 and air intake passage 2 4241 and exhaust passage two are all positioned at the upper and lower end parts of the pump housing 1, are more conducive to the layout of engineering plastics, achieve whole flow channels and are engineering plastics and make.Preferably, upper end cap 3 and end cap 4 position corresponding with the attached layer of engineering plastics 6 have in swallow-tailed locating slot, and engineering plastics attached layer 6 inner side surface has the positioning block coordinated with locating slot.
The important spare parts such as the pump housing 1 of this corrosion-resistant reciprocating vacuum pump, piston 2, upper end cap 3 and lower end cap 4 all adopt metallic material to make, the pump housing 1 inwall has the liner 12 that engineering plastics are made, piston 2 outer surface is coated with engineering plastic casing 5, the inner side surface of upper end cap 3 and lower end cap 4 all has the attached layer 6 of engineering plastics, thus make the flow-passing surface that can contact with gas medium in whole pump chamber 11 be engineering plastics to make, avoid the erosion of corrosive medium to component surface.This corrosion-resistant reciprocating vacuum pump maintains the high and resistant to elevated temperatures characteristic of intensity that metal vacuum pump has, while be also provided with good decay resistance, be specially adapted to vacuum operation under corrosive gas environment.
Embodiment two:
Technological scheme in the present embodiment is substantially identical with the technological scheme in embodiment one, difference is, as shown in Figure 3, in the present embodiment, matrix 22 circumferential surface of piston 2 has lug boss 221 in the form of a ring, the lug boss 221 on matrix 22 more can be conducive to the combination of engineering plastic casing 5 and matrix 22.
Embodiment three:
Technological scheme in the present embodiment is substantially identical with the technological scheme in embodiment one, and difference is, in the present embodiment, the pump housing 1 inwall has in swallow-tailed locating slot, liner 12 has the positioning block be connected in locating slot.Liner 12 is fixed by the cooperation of locating slot and positioning block, and the fastness that liner 12 and the pump housing 1 inwall combine is higher, under this structure is applicable to the relatively weak gaseous environment of corrosivity.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the terms such as the pump housing 1, pump chamber 11, liner 12, piston 2, piston rod 21, matrix 22, lug boss 221, upper end cap 3, air intake passage 1, exhaust passage 1, lower end cap 4, air intake passage 2 41, exhaust passage 2 42, engineering plastic casing 5, piston ring groove 51, the attached layer 6 of engineering plastics, nut 7 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (8)
1. a corrosion-resistant reciprocating vacuum pump, comprise the pump housing (1), piston (2) is provided with in the pump chamber (11) of the described pump housing (1), the described pump housing (1) two ends are fixedly connected with upper end cap (3) and lower end cap (4) respectively, described piston (2) is connected with driving mechanism by piston rod (21), described piston rod (21) is through lower end cap (4), it is characterized in that, the described pump housing (1) inwall has the liner (12) that engineering plastics are made, described piston (2) outer surface is coated with engineering plastic casing (5), the inner side surface of described upper end cap (3) and lower end cap (4) all has the attached layer of engineering plastics (6), all engineering plastics are coated with physical contact between media position in described pump chamber (11).
2. corrosion-resistant reciprocating vacuum pump according to claim 1, is characterized in that, described liner (12) and the pump housing (1) inwall drive fit.
3. corrosion-resistant reciprocating vacuum pump according to claim 1, is characterized in that, the described pump housing (1) inwall has in swallow-tailed locating slot, and described liner (12) has the positioning block be connected in above-mentioned locating slot.
4. the corrosion-resistant reciprocating vacuum pump according to claim 1 or 2 or 3, it is characterized in that, described piston (2) comprises the matrix (22) that metallic material is made, described engineering plastic casing (5) covers on whole described matrix (22), described engineering plastic casing (5) circumferential surface has several piston ring grooves (51).
5. corrosion-resistant reciprocating vacuum pump according to claim 4, is characterized in that, the circumferential surface of described matrix (22) has lug boss (221) in the form of a ring.
6. the corrosion-resistant reciprocating vacuum pump according to claim 1 or 2 or 3, it is characterized in that, described piston rod (21) is through piston (2) and fixed by nut (7) and piston (2), described piston rod (21) can stretch on one section of outer wall in pump chamber (11) has the engineering plastic bed of material, and described nut (7) outer surface has the engineering plastic bed of material.
7. the corrosion-resistant reciprocating vacuum pump according to claim 1 or 2 or 3, it is characterized in that, described upper end cap (3) has air intake passage one (31) and exhaust passage one (32), and the attached layer of engineering plastics (6) of described upper end cap (3) extends on air intake passage one (31) and exhaust passage one (32) inwall; Described lower end cap (4) has air intake passage two (41) and exhaust passage two (42), and the attached layer of engineering plastics (6) of described lower end cap (4) extends on air intake passage two (41) and exhaust passage two (42) inwall.
8. corrosion-resistant reciprocating vacuum pump according to claim 4, it is characterized in that, the matrix (22) of described piston (2) has in swallow-tailed locating slot, and described engineering plastic casing (5) has the positioning block be connected in above-mentioned locating slot; Described upper end cap (3) and lower end cap (4) position corresponding with the attached layer of engineering plastics (6) have in swallow-tailed locating slot, and the attached layer of described engineering plastics (6) inner side surface has the positioning block coordinated with above-mentioned locating slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420406114.1U CN204024966U (en) | 2014-07-22 | 2014-07-22 | A kind of corrosion-resistant reciprocating vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420406114.1U CN204024966U (en) | 2014-07-22 | 2014-07-22 | A kind of corrosion-resistant reciprocating vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204024966U true CN204024966U (en) | 2014-12-17 |
Family
ID=52064839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420406114.1U Expired - Fee Related CN204024966U (en) | 2014-07-22 | 2014-07-22 | A kind of corrosion-resistant reciprocating vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204024966U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513272A (en) * | 2019-10-11 | 2019-11-29 | 杭州千岛泵业有限公司 | A kind of vertical one way anti-corrosion vacuum pump and vertical round trip anti-corrosion vacuum pump |
| CN111502957A (en) * | 2020-05-21 | 2020-08-07 | 安慕科技(深圳)有限公司 | One-pump multi-head air outlet pump |
-
2014
- 2014-07-22 CN CN201420406114.1U patent/CN204024966U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110513272A (en) * | 2019-10-11 | 2019-11-29 | 杭州千岛泵业有限公司 | A kind of vertical one way anti-corrosion vacuum pump and vertical round trip anti-corrosion vacuum pump |
| CN110513272B (en) * | 2019-10-11 | 2024-06-25 | 杭州千岛泵业有限公司 | Vertical single-pass anti-corrosion vacuum pump and vertical double-pass anti-corrosion vacuum pump |
| CN111502957A (en) * | 2020-05-21 | 2020-08-07 | 安慕科技(深圳)有限公司 | One-pump multi-head air outlet pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110131419B (en) | Reciprocating type magnetic liquid combined sealing device | |
| US20130319220A1 (en) | Fluid End Reinforced With Abrasive Resistant Insert, Coating Or Lining | |
| JP2008020065A (en) | Hydraulic cylinder internal rust preventing device | |
| CN204024966U (en) | A kind of corrosion-resistant reciprocating vacuum pump | |
| US20110210520A1 (en) | Reciprocating shaft's sealing device with both magnetic fluid seal and c-type slip ring seal | |
| US20110193292A1 (en) | Magnetic fluid sealing and packing ring sealing device for reciprocating shaft with the packing ring having three oblique mouths | |
| CN205578403U (en) | Butter type hydraulic oil cylinder | |
| CN201196127Y (en) | Servomotor | |
| CN107701407A (en) | A kind of Pneumatic type double-diaphragm pump | |
| CN208587264U (en) | A kind of corrosion-resistant eccentric wheel pump | |
| CN101451615A (en) | N shaped composite sealing device | |
| CN201635964U (en) | Valve plate of gas valve of compressor | |
| KR101342001B1 (en) | Automatic pneumatic piston pumps | |
| CN202810770U (en) | Metal rubber composite plastic tube of bailing oil production puller | |
| CN208564946U (en) | A kind of plunger sealing structure | |
| CN201606343U (en) | Multistage hydraulic cylinder | |
| CN203940038U (en) | Solenoid directional control valve and valve auxiliary structure | |
| CN103046938B (en) | Mine individual hydraulic prop | |
| CN205330834U (en) | Corrosion -resistant explosion -proof air cleaner | |
| CN208703111U (en) | A kind of engine piston ring of the anti-gas blowby of mismatch | |
| CN204704402U (en) | A kind of double-sealing low leakage low noise sound cage valve | |
| CN102889392A (en) | Wear-resisting seal valve | |
| CN2694067Y (en) | Fluoroplastic full-lining ball valve special for alkali-chloride | |
| CN218236144U (en) | Sealing mechanism at plunger of crankshaft pump | |
| CN211666877U (en) | Novel double-valve oil well 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: 20141217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |