CN205423965U - Orifice of stomach structure - Google Patents
Orifice of stomach structure Download PDFInfo
- Publication number
- CN205423965U CN205423965U CN201620196332.6U CN201620196332U CN205423965U CN 205423965 U CN205423965 U CN 205423965U CN 201620196332 U CN201620196332 U CN 201620196332U CN 205423965 U CN205423965 U CN 205423965U
- Authority
- CN
- China
- Prior art keywords
- plug
- cardia
- end cap
- pars cardiaca
- air inlet
- 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
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The utility model belongs to the technical field of the mechanical equipment accessory, especially, relate to an orifice of stomach structure, including first pars cardiaca, second pars cardiaca and preventing the oil return structure, first pars cardiaca and second pars cardiaca sealing connection, first pars cardiaca are provided with the air inlet and reach the movable chamber that communicates with the air inlet, and the second pars cardiaca is provided with the gas outlet, prevents that the oil return structure is located the activity intracavity, and prevent oil return structure lid and locate the top of air inlet prevents that the oil return structure includes end cap, end cap sealing washer, end cap spring and end cap lid, and end cap and end cap sealing washer are located the end cap lid, and the end cap is located to the end cap spring housing, and the one end top of end cap spring is supported in the end cap lid, and the end cap lid is provided with bleeder vent and piston hole. Compared with the prior art, the utility model discloses an orifice of stomach structure installs additional between vacuum pump and the container that need be bled, can prevent the oil return, can prevent again by the entering of dust in the container of gas, improves operation process's reliability.
Description
Technical field
This utility model belongs to plant equipment accessory technical field, particularly relates to a kind of cardia structure.
Background technology
Vacuum pump refers to utilize machinery, physics, chemically or physically chemical method to be bled and the device or the equipment that obtain vacuum to taking out container.
In prior art, rotary-vane vaccum pump is provided with inlet valve, serves the effect of air-flow non-return.In order to ensure the sealing to air-flow; rubber ring would generally be set on inlet valve for strengthening sealing; but easily there is aging phenomenon in rubber ring after long-time use; after once breaking down in vacuum pump; the check function of inlet valve will be had a greatly reduced quality, thus easily oil condition occurs back in causing vacuum pump.
In order to solve problem of oil return, the way that prior art uses is to arrange check-valves in vacuum pump opening, for the ferrum stratum reticulare hindering machine oil to reflux and sealing member.Although this way solves the problem of oil return to a certain extent, but its reliability is affected bigger by the quality condition of assembling, air valve and sealing member.
It addition, in order to solve filtration problem, existing vacuum pump opening is also arranged with filter, when filtering and problem of oil return need to consider simultaneously, allow for structure complicated, add assembly cost.
Utility model content
The purpose of this utility model is: for the deficiencies in the prior art, and a kind of cardia structure is provided, it is installed at vacuum pump and between the container that needs are evacuated, the generation of oil return situation can be prevented, can prevent from again, by the entrance of dust in the container of gas, improving the reliability of operating process.
To achieve these goals, this utility model adopts the following technical scheme that
A kind of cardia structure, including the first pars cardiaca, second pars cardiaca and anti-oil-returning structure, described first pars cardiaca is tightly connected with described second pars cardiaca, described first pars cardiaca is provided with air inlet and the movable chamber connected with described air inlet, described second pars cardiaca is provided with gas outlet, described anti-oil-returning structure is positioned at described movable intracavity, and described anti-oil-returning structure is covered on the top of described air inlet, described anti-oil-returning structure includes plug, plug sealing ring, plug spring and plug cover, described plug and described plug sealing ring are positioned at described plug cover, described plug is located at by described plug spring housing, one end of described plug spring is resisted against described plug cover, described plug cover is provided with air-vent and piston hole.
As a kind of improvement of cardia structure described in the utility model, described second pars cardiaca is provided with gas filtration chamber, and it is cotton that described gas filtration intracavity is provided with dismountable gas filtration.Usually, need the container being evacuated the most all to there are dust or foreign material, dust or foreign material to be pumped to together in cardia structure along with gas, adsorbed by gas filtration cotton through gas filtration chamber, thus prevent dust or foreign material from entering in vacuum pump, affect the work of vacuum pump.It should be noted that the gas filtration cotton of different meshes the requirement of foreign material can be selected according to vacuum pump.It addition, gas filtration cotton is set to dismountable, it is simple to stay dust thereon after cleaning repeatedly absorption.Said structure of the present utility model instead of the structure two structures of prior art (structure of the present utility model instead of) of " check-valves+filter " in prior art, plays good anti-oil return and filtration, reduces assembly cost.
As a kind of improvement of cardia structure described in the utility model, described second pars cardiaca is provided with anti-loose structure, and described gas filtration is cotton and described anti-loose structure contacts and interlocks.
As a kind of improvement of cardia structure described in the utility model, the cross section of described anti-loose structure is set to triangular structure so that filter cotton is easier to be in contact with it and interlocks, and fixed effect is more.
A kind of improvement as cardia structure described in the utility model, described plug includes the first plug portion and the second plug portion connected as one with described first plug portion, described first plug portion and the contact internal walls of described plug cover, described second plug portion is set to "convex" shaped structure.Second plug portion is set to "convex" shaped structure, and its effect is equal to mutually with the effect of piston.
As a kind of improvement of cardia structure described in the utility model, described second plug portion includes that head and skirt section, described head are slidably matched with described piston hole.When vacuum pump work, under the stretching and contraction of plug spring, the head in the second plug portion can coordinate piston hole to slide up and down.
As a kind of improvement of cardia structure described in the utility model, the bottom in described first plug portion is close to by described plug sealing ring.
As a kind of improvement of cardia structure described in the utility model, described air inlet inwall and described gas outlet inwall are provided with screw thread, facilitate cardia structure to be quickly connected with vacuum pump and other container.
As a kind of improvement of cardia structure described in the utility model, the junction of described first pars cardiaca and described second pars cardiaca is provided with sealing ring.The setting of sealing ring makes the first pars cardiaca and the second pars cardiaca junction that gas leak phenomenon not occur, thus does not affect efficiency and the quality of vacuum pump work process.
As a kind of improvement of cardia structure described in the utility model, when described air inlet and described plug sealing ring are disposed as circular configuration, the diameter of described plug sealing ring is more than the diameter of described air inlet.When vacuum pump breaks down or quits work, the only diameter of plug sealing ring just can make the oil of returning part may not flow in the container needing to be evacuated more than the diameter of air inlet, pollutes this container of making dirty.
The beneficial effects of the utility model are: by between the cardia structure that this utility model provides is installed at vacuum pump and needs are evacuated container, when vacuum pump is started working, plug spring in anti-oil-returning structure is acted on by suction, driving plug to be lifted up together with plug sealing ring, now air inlet, movable chamber connect with gas outlet；Additionally, when vacuum pump breaks down or quits work, plug spring in anti-oil-returning structure restores to the original state, plug glides together with plug sealing ring, the connectivity part in movable chamber with air inlet is sealed by plug sealing ring, vacuum pump the machine oil refluxed then is blocked in movable intracavity by anti-oil return mechanism, does not flow out air inlet and then enters in the container that need to be evacuated, prevent the generation of oil return situation, improve the reliability of vacuum pump operation process.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is working state schematic representation of the present utility model.
Wherein: 1-the first pars cardiaca, 2-the second pars cardiaca, the anti-oil return mechanism of 3-, 4-air inlet, 5-activity chamber, 6-gas outlet, 7-plug, 8-plug sealing ring, 9-plug bullet, 10-plug cover, 11-air-vent, 12-piston hole, 13-gas filtration chamber, 14-gas filtration is cotton, 15-anti-loose structure, 16-the first plug portion, 17-the second plug portion, 18-head, 19-skirt section, 20-sealing ring.
Detailed description of the invention
Below in conjunction with detailed description of the invention and Figure of description, this utility model and beneficial effect thereof are described in further detail, but, detailed description of the invention of the present utility model is not limited thereto.
As shown in Figure 1, a kind of cardia structure, including the first pars cardiaca 1, second pars cardiaca 2 and anti-oil-returning structure 3, first pars cardiaca 1 is tightly connected with the second pars cardiaca 2, first pars cardiaca 1 is provided with air inlet 4 and the movable chamber 5 connected with air inlet 4, second pars cardiaca 2 is provided with gas outlet 6, anti-oil-returning structure 3 is positioned at movable chamber 5, and anti-oil-returning structure 3 is covered on the top of air inlet 4, anti-oil-returning structure 3 includes plug 7, plug sealing ring 8, plug spring 9 and plug cover 10, plug 7 and plug sealing ring 8 are positioned at plug cover 10, plug spring 9 is sheathed on plug 7, one end of plug spring 9 is resisted against plug cover 10, plug cover 10 is provided with air-vent 11 and piston hole 12.
Preferably, the second pars cardiaca 2 is provided with gas filtration chamber 13, is provided with dismountable gas filtration cotton 14 in gas filtration chamber 13.Second pars cardiaca 2 is provided with anti-loose structure 15, and gas filtration cotton 14 contacts with anti-loose structure 15 and interlocks.Anti-loose structure can be arranged as required to multiple, and the number of setting is the most, contacts the effect interlocked the best between its with gas filtration cotton.The cross section of anti-loose structure 15 is set to triangular structure.Certainly, the cross section of anti-loose structure may also be configured to other shape and structure.
Preferably, plug 7 includes the first plug portion 16 and the second plug portion 17 connected as one with the first plug portion 16, and the first plug portion 16 and the contact internal walls of plug cover 10, the second plug portion 17 is set to "convex" shaped structure.Second plug portion 17 includes head 18 and skirt section 19, and head 18 is slidably matched with piston hole 12.The bottom in the first plug portion 16 is close to by plug sealing ring 8.Air inlet 4 inwall and gas outlet 6 inwall are provided with screw thread.
Preferably, the junction of the first pars cardiaca 1 and the second pars cardiaca 2 is provided with sealing ring 20.When air inlet 4 and plug sealing ring 8 are disposed as circular configuration, the diameter of plug sealing ring 8 is more than the diameter of air inlet 4.
Work process of the present utility model is: the cardia structure that this utility model provides be installed between vacuum pump and the container that need to be evacuated, air inlet 4 is connected with the container that need to be evacuated, gas outlet 6 is connected with vacuum pump, when vacuum pump is started working, plug spring 9 in anti-oil-returning structure 3 is acted on by suction, plug 7 is driven to be lifted up together with plug sealing ring 8, that is, first plug portion 16 is along the internal upward sliding of plug cover 10, and the head 18 in the second plug portion 17 stretches out piston hole 12.Now, cardia structure defines a gas UNICOM structure, and the gas in container sequentially enters the anti-oil-returning structure 3 in movable chamber 5 and the gas filtration cotton 14 in gas filter chamber 13 by air inlet 4, then is pumped (as shown in Figure 2) by gas outlet 6.When vacuum pump quits work, in anti-oil-returning structure 3, plug spring 9 restores to the original state, plug 7 glides together with plug sealing ring 8, the connectivity part in movable chamber 5 with air inlet 4 is sealed by plug sealing ring 8, the machine oil of backflow from vacuum pump is locked in cardia structure, and does not flow in the container being evacuated.
Claims (10)
1. a cardia structure, it is characterized in that: include the first pars cardiaca, second pars cardiaca and anti-oil-returning structure, described first pars cardiaca is tightly connected with described second pars cardiaca, described first pars cardiaca is provided with air inlet and the movable chamber connected with described air inlet, described second pars cardiaca is provided with gas outlet, described anti-oil-returning structure is positioned at described movable intracavity, and described anti-oil-returning structure is covered on the top of described air inlet, described anti-oil-returning structure includes plug, plug sealing ring, plug spring and plug cover, described plug and described plug sealing ring are positioned at described plug cover, described plug is located at by described plug spring housing, one end of described plug spring is resisted against described plug cover, described plug cover is provided with air-vent and piston hole.
Cardia structure the most according to claim 1, it is characterised in that: described second pars cardiaca is provided with gas filtration chamber, and it is cotton that described gas filtration intracavity is provided with dismountable gas filtration.
Cardia structure the most according to claim 2, it is characterised in that: described second pars cardiaca is provided with anti-loose structure, and described gas filtration is cotton and described anti-loose structure contacts and interlocks.
Cardia structure the most according to claim 3, it is characterised in that: the cross section of described anti-loose structure is set to triangular structure.
Cardia structure the most according to claim 1, it is characterized in that: described plug includes the first plug portion and the second plug portion connected as one with described first plug portion, described first plug portion and the contact internal walls of described plug cover, described second plug portion is set to "convex" shaped structure.
Cardia structure the most according to claim 5, it is characterised in that: described second plug portion includes that head and skirt section, described head are slidably matched with described piston hole.
Cardia structure the most according to claim 5, it is characterised in that: the bottom in described first plug portion is close to by described plug sealing ring.
Cardia structure the most according to claim 1, it is characterised in that: described air inlet inwall and described gas outlet inwall are provided with screw thread.
Cardia structure the most according to claim 1, it is characterised in that: the junction of described first pars cardiaca and described second pars cardiaca is provided with sealing ring.
Cardia structure the most according to claim 1, it is characterised in that: when described air inlet and described plug sealing ring are disposed as circular configuration, the diameter of described plug sealing ring is more than the diameter of described air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620196332.6U CN205423965U (en) | 2016-03-15 | 2016-03-15 | Orifice of stomach structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620196332.6U CN205423965U (en) | 2016-03-15 | 2016-03-15 | Orifice of stomach structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205423965U true CN205423965U (en) | 2016-08-03 |
Family
ID=56545636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620196332.6U Expired - Fee Related CN205423965U (en) | 2016-03-15 | 2016-03-15 | Orifice of stomach structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205423965U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405735A (en) * | 2022-09-13 | 2022-11-29 | 恒大电气有限公司 | Air-extracting sealing device for metal oxide lightning arrester |
-
2016
- 2016-03-15 CN CN201620196332.6U patent/CN205423965U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405735A (en) * | 2022-09-13 | 2022-11-29 | 恒大电气有限公司 | Air-extracting sealing device for metal oxide lightning arrester |
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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: 20160803 Termination date: 20210315 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |