CN218624552U - Vacuum generator - Google Patents
Vacuum generator Download PDFInfo
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- CN218624552U CN218624552U CN202223135907.8U CN202223135907U CN218624552U CN 218624552 U CN218624552 U CN 218624552U CN 202223135907 U CN202223135907 U CN 202223135907U CN 218624552 U CN218624552 U CN 218624552U
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Abstract
The utility model discloses a vacuum generator, include: shell, vacuum generating tube, connecting plate, the shell has: the air inlet is communicated with the air inlet cavity, and the vacuum cavity is communicated with the air extraction opening; the vacuum generating tubes are arranged in the vacuum cavity, the air inlet ends of the vacuum generating tubes are communicated with the air inlet cavity, the air outlet ends of the vacuum generating tubes are communicated with the air outlet, and the air exhaust ends of the vacuum generating tubes are communicated with the vacuum cavity; the connecting plate is connected between the vacuum generating tubes and is used to position the vacuum generating tubes. The vacuum generator is internally provided with a plurality of vacuum generating tubes, so that the vacuum generator has higher vacuum generating efficiency, the vacuum generating tubes are connected by the connecting plate, the stability of the vacuum generating tubes in the shell for positioning can be improved, and the stability of the vacuum generator structure is improved.
Description
Technical Field
The utility model relates to an evacuation technical field, in particular to vacuum generator.
Background
The high-speed railway is spread over the south and north of great rivers in China, heavy personnel transportation work is born each year, two toilets are usually arranged in a carriage of a high-speed railway, and the toilets are basically in a more frequent use state in the running process of the high-speed railway, so that high requirements are put forward on a vacuum excrement collecting system of the toilets, a vacuum generating component in the vacuum excrement collecting system can generate high negative pressure in a short time, and a vacuum generator needs to be designed according to the requirements.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a vacuum generator, and has the characteristics of quick response and high efficiency.
An embodiment of the present application provides a vacuum generator, including:
a housing having: the air inlet is communicated with the air inlet cavity, and the vacuum cavity is communicated with the air extraction opening;
the vacuum generating tubes are arranged in the vacuum cavity, the air inlet ends of the vacuum generating tubes are communicated with the air inlet cavity, the air outlet ends of the vacuum generating tubes are communicated with the air outlet, and the air exhaust ends of the vacuum generating tubes are communicated with the vacuum cavity;
a connection plate connected between the vacuum generating tubes and used to position the vacuum generating tubes.
The beneficial effects of the above embodiment are as follows: this kind of vacuum generator inside can integrate many vacuum generator tubes for this kind of vacuum generator has higher vacuum generating efficiency, and let in high-speed gas by the air inlet, can directly distribute to different vacuum generator tubes through the chamber of admitting air, make this kind of vacuum generator have the sensitive characteristics of reaction, by connecting plate with vacuum generator union coupling, can also improve the stability that vacuum generator tube was fixed a position in the shell, improve the stability of this kind of vacuum generator structure promptly.
On the basis of the above embodiment, the embodiment of the present application may be further modified as follows:
in one embodiment of the present application: the surface of the connecting plate is provided with: the connecting structure comprises a connecting hole A and a connecting hole B, wherein the connecting hole A is a round hole, and the connecting hole B is a waist-shaped hole. The beneficial effect of this step: through setting up waist type hole, can be convenient for more be connected the connecting plate with vacuum generator.
In one embodiment of the present application: the housing includes: the shell A is provided with a cavity A; the shell B is provided with a cavity B, and the shell B is in butt joint with the shell A; the sealing element A is arranged at the joint of the shell A and the shell B; wherein the cavity A and the cavity B form the vacuum cavity. The beneficial effect of this step: the sealing part A seals the butt joint of the shell A and the shell B, so that the air tightness of the shell is improved.
In one embodiment of the present application: further comprising: the core A is arranged in the cavity A, and the air inlet cavity is formed between the core A and the shell A; a seal B disposed between the core A and the housing A; a core B disposed in the cavity B; a seal C disposed between the core B and the housing B. The beneficial effect of this step: the sealing member B and the sealing member C can provide an airtight effect of the vacuum chamber.
In one embodiment of the present application: an annular groove is formed in the periphery of the middle of the core body A, and the air inlet cavity is formed between the annular groove and the shell A. The beneficial effect of this step: the annular groove has small resistance to airflow, is more favorable for the flow of gas, and can better distribute the gas to each vacuum generating pipe.
In one embodiment of the present application: further comprising: the piston is arranged in the shell A in a sliding mode, the piston is arranged between the vacuum cavity and the air suction opening, and the piston is used for communicating the air suction opening with the vacuum cavity when the vacuum cavity generates negative pressure. The beneficial effect of this step: through setting up the piston for this kind of vacuum generator can seal the extraction opening when out of work, can effectually prevent that external debris from getting into in the vacuum generator.
In one embodiment of the present application: the piston surface is provided with: the guide post A is arranged at the end part of the piston, which faces the core body A, the core body A is provided with a guide hole A corresponding to the guide post, a limiting surface is arranged in the guide hole A, and the limiting surface is used for limiting the maximum distance of the movement of the guide post A; the guide column B is arranged at the end part, facing the air exhaust opening, of the piston, the shell A is provided with a limiting reinforcing section, the limiting reinforcing section is connected into the air exhaust opening, a guide hole B is formed in the limiting reinforcing section corresponding to the guide column B, and the limiting reinforcing section is used for limiting the maximum movement distance of the guide column B. The beneficial effect of this step: the guide column A and the guide column B guide the movement of the piston at two ends of the piston, so that the movement stability of the piston is improved, the limiting surface and the limiting reinforcing section can limit the limit position of the multiple piston movement, and the working stability of the vacuum generator is further improved.
In one embodiment of the present application: further comprising: the elastic piece is arranged between the piston and the core body A, and the elastic piece is used for applying external force towards the direction of the air suction opening to the piston. The beneficial effect of this step: the elastic piece is arranged, so that on one hand, the piston can be prevented from completely sealing the passage of the vacuum cavity and the extraction opening, and on the other hand, the piston can be reset when the vacuum generator stops working.
In one embodiment of the present application: further comprising: and the sealing piece D is connected to the air vent formed in the shell, and seals the air vent when the vacuum cavity generates negative pressure, otherwise, the air vent is opened. The beneficial effect of this step: the sealing member D discharges the gas rushing into the vacuum cavity to the external environment at the moment of gas inlet of the gas inlet, so that the response speed of the vacuum generator during vacuum pumping is improved, and the effect of a safety valve can be achieved.
In one embodiment of the present application: the shell is further provided with an interface, and the interface is used for connecting a plug or an electric control pressure relief device. The beneficial effect of this step: the interface is externally connected with a plug or an electric control pressure relief device, and also plays a role of a safety valve.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a first schematic three-dimensional structure of a vacuum generator;
FIG. 2 is a front view of the vacuum generator;
FIG. 3 isbase:Sub>A cross-sectional view taken along A-A of FIG. 2;
FIG. 4 is a first three-dimensional schematic diagram of the internal structure of the vacuum generator;
fig. 5 is a three-dimensional schematic diagram of the internal structure of the vacuum generator.
Wherein, 1, a shell, a 101 air inlet, a 102 air outlet, a 103 air exhaust port, a 104 air inlet cavity, a 105 vacuum cavity, 106 shell A,107 shell B,108 sealing element A,109 guide hole B,110 ventilation port and 111 interface;
2 vacuum generating tube, 201 column;
3 connecting plate, 301 connecting hole A,302 connecting hole B;
4, a core body A, a401 guide hole A and a 402 limit surface;
5, a sealing member B;
6, a core body B;
7 a seal member C;
8 piston, 801 guide post a,802 guide post B;
9 an elastic member;
10 sealing member D;
11, a plug;
12 rubber stopper.
Detailed Description
In this application, unless expressly stated or limited otherwise, terms such as mounted, connected, secured, affixed, and the like are to be construed broadly and may, for example, be fixedly connected, releasably connected, or integral; the mechanical connection can be realized by selecting a proper connection mode in the prior art, such as welding, riveting, threaded connection, bonding, pin connection, key connection, elastic deformation connection, buckle connection, interference connection and injection molding; or an electrical connection, transmitting energy or signals by electricity; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
As shown in fig. 1-4, a vacuum generator includes: shell 1, vacuum generating tube 2, connecting plate 3, shell 1 has: the vacuum pump comprises a gas inlet 101, a gas outlet 102, a pumping hole 103, a gas inlet cavity 104 and a vacuum cavity 105, wherein the gas inlet 101 is communicated with the gas inlet cavity 104, and the vacuum cavity 105 is communicated with the pumping hole 103; the number of the vacuum generating tubes 2 is even, the vacuum generating tubes 2 are arranged in the vacuum cavity 105, the air inlet ends of the vacuum generating tubes 2 are communicated with the air inlet cavity 104, the air outlet ends of the vacuum generating tubes 2 are communicated with the air outlet 102, and the air exhaust ends of the vacuum generating tubes 2 are communicated with the vacuum cavity 105; the connection plate 3 is connected between the vacuum generating tubes 2 and serves to position the vacuum generating tubes 2.
As shown in fig. 4 and 5, the vacuum generating tube 2 is a SMC vacuum generating tube 2, two columns 201 for connecting with bolts are arranged on the outer side of the vacuum generating tube 2, both sides of the vacuum generating tube are arranged above and below the air exhaust end, the two vacuum generating tubes 2 are a set, one set of vacuum generating tube 2 is connected by two connecting plates 3, and the surface of the connecting plate 3 is provided with: connecting hole A301, connecting hole B302, connecting hole A301 is the round hole, connecting hole B302 is waist type hole, the through-hole that connecting hole A301 and column 201 surface were seted up aligns, the through-hole that sets up on connecting hole B302 and another vacuum generator's of the same group column 201 aligns, connecting hole B302 adopts waist type hole, make the mounted position can have certain surplus, greatly reduced the assembly degree of difficulty of connecting plate 3 and vacuum generator pipe 2, be connected connecting plate 3 and column 201 through the bolt, be about to link together two vacuum generator pipes 2, the reason of so design lies in, because this kind of vacuum generator pipe 2 only has an end of bleeding, so it is uneven in neat circumference atress, fix two vacuum generator pipes 2 together through connecting plate 3, the stability of vacuum generator pipe 2 location has greatly improved, greatly reduced the probability that vacuum generator pipe 2 rocked or even pine takes off.
In the embodiment shown in the drawings, two vacuum generating tubes 2 are provided, and in practice, as long as the vacuum chamber 105 is large enough, any even number of vacuum generating tubes 2 can be arranged in the vacuum chamber 105, and the connecting plates 3 can be assembled by making the end faces of the columnar bodies 201 on the adjacent vacuum generating tubes 2 in the same plane, so that the adjacent vacuum generating tubes 2 are connected into a whole.
As shown in fig. 3, the housing 1 includes: the device comprises a shell A106, a shell B107 and a sealing element A108, wherein the shell A106 is provided with a cavity A; cavity B has been seted up to casing B107, casing B107 and casing A106 butt joint, the butt joint department makes cavity A and cavity B communicate, cavity A and cavity B form vacuum cavity 105, sealing member A108 sets up in the butt joint department of casing A106 and casing B107, specifically, casing A106 and casing B107's butt joint department all is provided with the turn-ups, the seal groove has been seted up on the turn-ups surface, sealing member A108 has been placed in the seal groove, sealing member A108 adopts sealed pad or sealing washer.
As shown in fig. 3, the vacuum generator further includes: the vacuum pump comprises a core A4, a sealing element B5, a core B6 and a sealing element C7, wherein the core A4 is arranged in a cavity A, an air inlet cavity 104 is formed between the core A4 and a shell A106, the sealing element B5 is arranged between the core A4 and the shell A106, the core B6 is arranged in the cavity B, the sealing element C7 is arranged between the core B6 and a shell B107, specifically, sealing grooves are formed in the peripheries of the upper end and the lower end of the core A4, the sealing element B5 is placed in the sealing groove, the sealing ring is adopted by the sealing element B5, a sealing groove is formed in the outer ring of the core B6, the sealing element C7 is placed in the sealing groove, the sealing ring is adopted by the sealing element C7, a through hole for communicating the vacuum cavity 105 with the air exhaust opening 103 is formed in the core A4, a through hole for communicating the air inlet cavity 104 with the air inlet end of the vacuum generating pipe 2 is formed in the core A4, and a through hole for communicating the air outlet end of the vacuum generating pipe 2 is formed in the core B6.
As shown in fig. 3, the central portion of the core A4 is provided with an annular groove, an air inlet cavity 104 is formed between the annular groove and the casing a106, and the annular groove has no abrupt change in shape, so that the resistance to the gas flow is small, and the gas flow is more uniform.
As shown in fig. 3, the vacuum generator further includes: a piston 8, the piston 8 is slidably disposed in the housing A106, the piston 8 is disposed between the vacuum chamber 105 and the pumping port 103, and the piston 8 is used for communicating the pumping port 103 with the vacuum chamber 105 when the vacuum chamber 105 generates negative pressure.
As shown in fig. 3, specifically, the piston 8 is made of rubber, and the surface of the piston 8 is provided with: the guide post A801 and the guide post B802 are both of a cylindrical structure, the guide post A801 is arranged at the end part of the piston 8 facing the core A4, the core A4 is provided with a guide hole A401 corresponding to the guide post, a limiting surface 402 is arranged in the guide hole A401 and used for limiting the maximum distance of downward movement of the guide post A801 and preventing the guide post B802 from coming off from the guide structure above, the guide post B802 is arranged at the end part of the piston 8 facing the air suction opening 103, the shell A106 is provided with a limiting reinforcing section, the limiting reinforcing section is arranged in the air suction opening 103 and connected with the inner wall of the air suction opening 103, the guide hole B109 is arranged corresponding to the guide post B802, and the limiting reinforcing section is used for limiting the maximum distance of upward movement of the guide post B802.
As shown in fig. 4, the vacuum generator further includes: elastic component 9, elastic component 9 sets up between piston 8 and core A4, and elastic component 9 is used for applying the external force towards extraction opening 103 direction to piston 8, and elastic component 9 specifically adopts the pressure spring, and the outside of guide post A801 is located to the pressure spring cover, applys ascending external force to piston 8 through the pressure spring for vacuum chamber 105 is under the ordinary pressure state, and piston 8 can normally reset and seal extraction opening 103, thereby has improved the stability of this kind of vacuum generator work.
As shown in fig. 3, the vacuum generator further includes: sealing member D10, sealing member D10 connects in the ventilative mouth 110 department that shell 1 seted up, sealing member D10 seals ventilative mouth 110 when vacuum chamber 105 produces the negative pressure, otherwise open ventilative mouth 110, specifically, sealing member D10 adopts the rubber leather block, the leather block rear side is provided with the rubber post, the rubber post is seted up with the spacing hole complex spout that ventilative mouth 110 department set up, the rubber post is inserted and is located in spacing hole and by spout and spacing hole cooperation, make the rubber leather block can not drop from ventilative mouth 110, the effect of rubber leather block lies in, when producing the malleation in the vacuum chamber 105 relative to the shell 1 outside, the rubber leather block can remove thereby open ventilative mouth 110, make air discharge in the vacuum chamber 105 to the external zone in, this kind of condition generally takes place in the air inlet 101 just admitting air in the twinkling of an eye, gas in the vacuum generator can get into in vacuum chamber 105 through vacuum pipe 2, gas can discharge through ventilative mouth 110 this moment, because unnecessary air can be directly discharged, and need not will go into the gas evacuation of vacuum chamber 105 through the mode of vacuum generator and will be discharged, thereby can improve the gas outlet blocking effect when the vacuum generator also can open, thereby the rubber generator can also can respond to the effect when the protection.
As shown in fig. 3, the housing 1 is further provided with a port 111, the port 111 is used for connecting the plug 11 or is used for connecting an electrically controlled pressure relief device, in this embodiment, the plug 11 is connected in the port 111, a rubber plug 12 is inserted in the port, the rubber plug 12 plays a role in protection, when the air outlet is blocked, and the pressure in the vacuum chamber 105 is too high, the rubber plug 12 is extruded from the plug 11 by the air pressure, so that the air can be exhausted through the port 111, so that the protection function can be achieved, the port 111 can also be externally connected with the electrically controlled pressure relief device, so as to detect the pressure in an electrically controlled manner and relieve the pressure when the pressure is too high.
When the vacuum generator is used, high-pressure gas is introduced from the gas inlet 101, the high-pressure gas enters the vacuum generating tube 2 through the gas inlet cavity 104, high-speed airflow is formed in the vacuum generating tube 2, negative pressure is formed at the gas exhaust end of the vacuum generating tube 2, the gas in the vacuum cavity 105 is sucked into the vacuum generating tube 2, the gas is exhausted from the gas outlet through the vacuum generating tube 2, the piston 8 moves to the vacuum cavity 105 under the external pressure due to the negative pressure of the vacuum cavity 105, the piston 8 compresses the elastic member 9 to communicate the vacuum cavity 105 with the gas exhaust opening 103, so that external vacuum pumping operation is performed, when the gas inlet 101 stops gas inlet, the pressure in the vacuum cavity 105 returns to the initial state, and the piston 8 seals the vacuum exhaust opening under the elastic force of the elastic member 9.
This kind of vacuum generator has small, the sensitive characteristics of reaction to can integrate many vacuum generating tubes 2 in inside, vacuum generating is efficient, is connected vacuum generating tube 2 by connecting plate 3, can also improve the stability of vacuum generating tube 2 location in shell 1, improves the stability of this kind of vacuum generator structure promptly.
The above are merely embodiments of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, so that those skilled in the art can know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can know all the prior art in the field, and have the capability of applying the conventional experimental means before the date. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (10)
1. A vacuum generator, comprising:
a housing having: the air inlet is communicated with the air inlet cavity, and the vacuum cavity is communicated with the air extraction opening;
the vacuum generating tubes are arranged in the vacuum cavity, the air inlet ends of the vacuum generating tubes are communicated with the air inlet cavity, the air outlet ends of the vacuum generating tubes are communicated with the air outlet, and the air exhaust ends of the vacuum generating tubes are communicated with the vacuum cavity;
a connection plate connected between the vacuum generating tubes and used to position the vacuum generating tubes.
2. The vacuum generator as claimed in claim 1, wherein the connecting plate surface is provided with: the connecting structure comprises a connecting hole A and a connecting hole B, wherein the connecting hole A is a round hole, and the connecting hole B is a waist-shaped hole.
3. The vacuum generator of claim 1, wherein the housing comprises:
the shell A is provided with a cavity A;
the shell B is provided with a cavity B and is in butt joint connection with the shell A;
the sealing element A is arranged at the joint of the shell A and the shell B;
wherein the cavity A and the cavity B form the vacuum cavity.
4. The vacuum generator of claim 3, further comprising:
the core A is arranged in the cavity A, and the air inlet cavity is formed between the core A and the shell A;
a seal B disposed between the core A and the housing A;
a core B disposed in the cavity B;
a seal C disposed between the core B and the housing B.
5. The vacuum generator as claimed in claim 4, wherein the core A has an annular groove formed at its central portion, and the annular groove and the housing A form the air inlet chamber therebetween.
6. The vacuum generator as claimed in claim 4, further comprising:
the piston is arranged in the shell A in a sliding mode, the piston is arranged between the vacuum cavity and the air suction opening, and the piston is used for communicating the air suction opening with the vacuum cavity when the vacuum cavity generates negative pressure.
7. The vacuum generator as claimed in claim 6, wherein the piston surface is provided with:
the guide post A is arranged at the end part of the piston facing the core body A, the core body A is provided with a guide hole A corresponding to the guide post, a limiting surface is arranged in the guide hole A, and the limiting surface is used for limiting the maximum movement distance of the guide post A;
the guide column B is arranged at the end part, facing the air exhaust opening, of the piston, the shell A is provided with a limiting reinforcing section, the limiting reinforcing section is connected into the air exhaust opening, a guide hole B is formed in the limiting reinforcing section corresponding to the guide column B, and the limiting reinforcing section is used for limiting the maximum movement distance of the guide column B.
8. The vacuum generator of claim 6, further comprising: the elastic piece is arranged between the piston and the core body A, and is used for applying external force towards the direction of the air suction opening to the piston.
9. The vacuum generator as claimed in claim 1, further comprising: and the sealing piece D is connected to the air vent formed in the shell, and seals the air vent when the vacuum cavity generates negative pressure, otherwise, the air vent is opened.
10. The vacuum generator as claimed in claim 1, wherein the housing further defines an interface for connecting a plug or for connecting an electrically controlled pressure relief device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223135907.8U CN218624552U (en) | 2022-11-24 | 2022-11-24 | Vacuum generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223135907.8U CN218624552U (en) | 2022-11-24 | 2022-11-24 | Vacuum generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218624552U true CN218624552U (en) | 2023-03-14 |
Family
ID=85449352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223135907.8U Active CN218624552U (en) | 2022-11-24 | 2022-11-24 | Vacuum generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218624552U (en) |
-
2022
- 2022-11-24 CN CN202223135907.8U patent/CN218624552U/en active Active
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