CN211174824U - High-efficiency vacuum generator - Google Patents
High-efficiency vacuum generator Download PDFInfo
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- CN211174824U CN211174824U CN201922056262.0U CN201922056262U CN211174824U CN 211174824 U CN211174824 U CN 211174824U CN 201922056262 U CN201922056262 U CN 201922056262U CN 211174824 U CN211174824 U CN 211174824U
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Abstract
The utility model relates to a high efficiency vacuum generator, including inside first shell and the second shell that is the cavity structure, the outside extension of opening along the cylindric cavity of first shell forms the boss, the outside extension of opening along the cylindric cavity of second shell forms the installing support, the boss makes first shell and second shell link to each other with the installing support spiro union and forms integral type cavity structure, the both ends of integral type cavity structure inwards shrink respectively and form the stairstepping cavity that has toper transition structure, a plurality of venturi of equipartitions in integral type cavity structure, set up the through-hole that is used for installing the safety diaphragm on first shell, locate to set up one-way diaphragm in toper transition structure. The utility model discloses a many parallelly connected venturi combinations make negative pressure environment fast, and connected mode is compact, satisfies EMUs passenger train vacuum collection just system to the requirement of use frequency, and the security, the reliability of vacuum collection just system use have been improved to adaptation stool pot structure.
Description
Technical Field
The utility model belongs to the technical field of the vacuum components and parts technique and specifically relates to a high efficiency vacuum generator.
Background
The vacuum generator is a novel, clean, economical and small vacuum component which utilizes a positive pressure air source to generate negative pressure, so that the negative pressure can be easily and conveniently obtained in a place with compressed air or a place which needs the positive and negative pressure in a pneumatic system. The passenger train of the motor train unit is provided with the vacuum excrement collecting system, and the vacuum excrement collecting system of the motor train unit needs to reach a usable state quickly due to the fact that passenger flow of the motor train unit is large, mobility of passengers is strong, using frequency of toilets is high. Traditional vacuum generator efficiency is lower, and the time of producing the negative pressure is long, and the user need wait for longer corresponding time, influences and uses and experiences.
SUMMERY OF THE UTILITY MODEL
The applicant provides a high-efficiency vacuum generator aiming at the defects in the prior art, so that the negative pressure manufacturing efficiency of the vacuum generator is greatly improved, and the requirement of a vacuum excrement collecting system of a passenger train unit for the use frequency is met.
The utility model discloses the technical scheme who adopts as follows:
a high-efficiency vacuum generator comprises a first shell and a second shell, wherein the first shell and the second shell are of a cavity structure, one end of the first shell is of a cylindrical structure, a boss is formed by outwards extending along an opening of the cylindrical cavity of the first shell, one end of the second shell is also of a cylindrical structure, an installation support is formed by outwards extending along an opening of the cylindrical cavity of the second shell, the installation support is of a plate-shaped structure, the boss is in threaded connection with the installation support to enable the first shell and the second shell to be connected to form an integrated cavity structure, two ends of the integrated cavity structure are respectively inwards contracted to form a step-shaped cavity with a conical transition structure, a plurality of Venturi tubes are uniformly distributed in the integrated cavity structure, a Venturi tube opening positioned on one side of the first shell divides an inner cavity of the first shell into a first cavity and a second cavity, a Venturi tube opening positioned on one side of the second shell divides an inner cavity of the second shell into a third cavity and a fourth cavity, the second cavity is communicated with the fourth cavity, the first cavity and the third cavity are respectively positioned at two ends of the integrated cavity structure, a second through hole is formed in the first shell and the first cavity, a first through hole is formed in the first shell and the second cavity, through holes for mounting the safety diaphragm are formed in the first shell and on the opposite side of the first through hole, and the one-way diaphragm is arranged in the first cavity and at the conical transition structure.
The further technical scheme is as follows:
the surface of the mounting bracket is parallel to the section of the cylindrical cavity of the first shell, one end of the mounting bracket is bent upwards to form a right-angle folded edge, and a plurality of mounting holes are formed in the right-angle folded edge;
threads are arranged on the inner peripheries of the first through hole and the second through hole, and the first quick connector and the second quick connector are respectively in threaded connection with the first through hole and the second through hole;
the second quick connector is a right-angle connector;
the Venturi tube is of a double-layer tubular structure and comprises a first tube wall and a second tube wall, the second tube wall is positioned in the first tube wall and is coaxial with the first tube wall, the first tube wall and the second tube wall are clamped to form a fifth chamber, and the second tube wall is enclosed to form a sixth chamber;
the safety diaphragm and the one-way diaphragm are in interference fit with the inner cavity of the first shell;
the Venturi tube is attached to the inner wall of the integrated cavity structure;
and a plurality of fastening pieces are distributed on the periphery of the boss, each fastening piece comprises a fastening screw and a fastening nut, and each fastening screw penetrates through the boss and the mounting bracket and is matched with the fastening nut.
The utility model has the advantages as follows:
the utility model discloses rational in infrastructure, through the combination of many venturi that connect in parallel, make negative pressure environment fast, and connected mode is compact, satisfies EMUs passenger train vacuum collection just system to the requirement of use frequency, and the security, the reliability of vacuum collection just system use have been improved to adaptation stool pot structure.
Drawings
Fig. 1 is a schematic view of a first external structure of the present invention.
Fig. 2 is a sectional view of the internal structure of the present invention.
Fig. 3 is a top view of the internal structure of the present invention.
Fig. 4 is a schematic diagram of a second external structure of the present invention.
Wherein: 1. a first housing; 101. a first through hole; 102. a first chamber; 103. a second through hole; 104. a second chamber; 105. a boss; 2. a second housing; 201. a third chamber; 202. a fourth chamber; 3. mounting a bracket; 301. mounting holes; 4. a first quick connector; 5. a second quick connector; 6. a safety diaphragm; 7. a unidirectional membrane; 8. a venturi tube; 801. a first tube wall; 802. a fifth chamber; 803. a second tube wall; 804. a sixth chamber; 9. a fastener.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-4, the utility model discloses an inside first shell 1 and the second shell 2 that is the cavity structure, the one end of first shell 1 is cylindric structure, the opening along the cylindric cavity of first shell 1 outwards extends and forms boss 105, the one end of second shell 2 also is cylindric structure, the opening along the cylindric cavity of second shell 2 outwards extends and forms installing support 3, installing support 3 is platelike structure, boss 105 and 3 spiro union of installing support make first shell 1 link to each other with second shell 2 and form integral type cavity structure, the both ends of integral type cavity structure inwards shrink respectively and form the stairstepping cavity that has toper transition structure, a plurality of root venturi 8 of equipartition in integral type cavity structure, the venturi 8 mouth of pipe that is located first shell 1 one side separates the inner chamber of first shell 1 for first cavity 102 and second cavity 104, the venturi 8 mouth of pipe that is located second shell 2 one side separates the inner chamber of second shell 2 for third cavity 201 and a fourth cavity 202, a second cavity 104 is communicated with the fourth cavity 202, the first cavity 102 and the third cavity 201 are respectively located at two ends of the integrated cavity structure, a second through hole 103 is arranged in the first cavity 102 on the first shell 1, a first through hole 101 is arranged in the second cavity 104 on the first shell 1, a through hole for installing a safety diaphragm 6 is arranged at the opposite side of the first through hole 101 on the first shell 1, and a one-way diaphragm 7 is arranged at the conical transition structure in the first cavity 102.
The surface of installing support 3 is parallel with the cross-section of the cylindric cavity of first shell 1, and the one end kickup of installing support 3 forms the right angle hem, sets up a plurality of mounting hole 301 on the right angle hem. Threads are formed on the inner peripheries of the first through hole 101 and the second through hole 103, and the first quick connector 4 and the second quick connector 5 are respectively in threaded connection with the first through hole 101 and the second through hole 103. The second quick connector 5 is a right-angle connector. The venturi tube 8 is a double-layer tubular structure, and includes a first tube wall 801 and a second tube wall 803, the second tube wall 803 is located in the first tube wall 801 and is coaxial with the first tube wall 801, the first tube wall 801 and the second tube wall 803 sandwich each other to form a fifth chamber 802, and the second tube wall 803 encloses to form a sixth chamber 804. The safety diaphragm 6 and the one-way diaphragm 7 are in interference fit with the inner cavity of the first shell 1. The venturi tube 8 is attached to the inner wall of the integrated cavity structure. A plurality of fastening pieces 9 are distributed on the periphery of the boss 105, each fastening piece 9 comprises a fastening screw and a fastening nut, and each fastening screw penetrates through the boss 105 and the mounting bracket 3 and is matched with the fastening nut.
The utility model discloses a concrete working process as follows:
when compressed air enters the high-efficiency vacuum generator from the second quick-connect connector 5 and reaches the first chamber 102 designed in the first housing 1, the compressed air flowing at high speed flows out from the sixth chamber 804 inside the dune tube 8 to the third chamber 201 due to the pressure difference, and then is discharged out of the high-efficiency vacuum generator. The air in the fifth chamber 802 is taken out by the high-flow-rate compressed air, and because the fifth chamber 802 is communicated with the space formed by the second chamber 104 and the fourth chamber 202, negative pressure is formed in the fifth chamber 802 after the air is taken out, the one-way diaphragm 7 is in the open position due to the pressure difference, and the air in the upper space of the first housing is also taken out by the high-flow compressed air, so that a negative pressure space is formed in the upper space of the first housing 1. When compressed air stops entering the high-efficiency vacuum generator from the second quick connector 5, the external air enters the high-efficiency vacuum generator from the third chamber 201, the sixth chamber 804 communicates the second chamber 104 with the fourth chamber 202 to form a combined space, the internal air pressure is consistent with the external air pressure through the combined space, and at the moment, a pressure difference exists between the inside of the high-efficiency vacuum generator and the negative pressure space formed on the upper portion of the first shell 1, so that the one-way diaphragm 7 is in a closed state, and the negative pressure state of the upper space of the first shell 1 is kept.
In the embodiment, the six venturi tubes 8 exist at the same time, so that the working efficiency is higher, the upper space of the first shell 1 can reach a set negative pressure value in a very short time, the maximum negative pressure state of not lower than-45 kPa can be achieved in the upper space of the vacuum generator, in the embodiment, the flow rate can reach 0.006 s/L when the negative pressure value is set to-10 kPa, the flow rate can reach 0.015 s/L when the negative pressure value is set to-20 kPa, the flow rate can reach 0.026 s/L when the negative pressure value is set to-30 kPa, and the flow rate can reach 0.055 s/L when the negative pressure value is set to-40 kPa.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.
Claims (8)
1. A high efficiency vacuum generator, characterized by: including inside first shell (1) and second shell (2) for the cavity structure, the one end of first shell (1) is cylindric structure, outwards extends along the opening of the cylindric cavity of first shell (1) and forms boss (105), the one end of second shell (2) also is cylindric structure, outwards extends along the opening of the cylindric cavity of second shell (2) and forms installing support (3), installing support (3) are platelike structure, boss (105) and installing support (3) spiro union make first shell (1) link to each other with second shell (2) and form integral type cavity structure, the both ends of integral type cavity structure inwards shrink respectively and form the stairstepping cavity that has toper transition structure, in a plurality of roots of equipartition are separated for venturi (8) in integral type cavity structure, and venturi (8) mouth of pipe that are located first shell (1) one side are with the inner chamber (102) and the second cavity of first shell (1) cavity structure (104) The venturi tube (8) positioned on one side of the second shell (2) divides the inner cavity of the second shell (2) into a third cavity (201) and a fourth cavity (202), the second cavity (104) is communicated with the fourth cavity (202), the first cavity (102) and the third cavity (201) are respectively positioned at two ends of the integrated cavity structure, a second through hole (103) is formed in the first cavity (102) on the first shell (1), a first through hole (101) is formed in the second cavity (104) on the first shell (1), a through hole for installing a safety diaphragm (6) is formed in the first shell (1) and on the opposite side of the first through hole (101), and a one-way diaphragm (7) is arranged in the first cavity (102) and at the conical transition structure.
2. A high efficiency vacuum generator as defined in claim 1, wherein: the surface of the mounting support (3) is parallel to the section of the cylindrical cavity of the first shell (1), one end of the mounting support (3) is bent upwards to form a right-angle folded edge, and a plurality of mounting holes (301) are formed in the right-angle folded edge.
3. A high efficiency vacuum generator as defined in claim 1, wherein: the inner peripheries of the first through hole (101) and the second through hole (103) are provided with threads, the quick connector comprises a first quick connector (4) and a second quick connector (5), and the first quick connector (4) and the second quick connector (5) are respectively in threaded connection with the first through hole (101) and the second through hole (103).
4. A high efficiency vacuum generator as defined in claim 3, wherein: the second quick connector (5) is a right-angle connector.
5. A high efficiency vacuum generator as defined in claim 1, wherein: venturi (8) are double-deck tubular structure, and venturi (8) include first pipe wall (801) and second pipe wall (803), second pipe wall (803) are located first pipe wall (801) and with first pipe wall (801) coaxial setting, first pipe wall (801) presss from both sides mutually with second pipe wall (803) and forms fifth cavity (802), second pipe wall (803) enclose and close and form sixth cavity (804).
6. A high efficiency vacuum generator as defined in claim 1, wherein: the safety diaphragm (6) and the one-way diaphragm (7) are in interference fit with the inner cavity of the first shell (1).
7. A high efficiency vacuum generator as defined in claim 5, wherein: the venturi tube (8) is attached to the inner wall of the integrated cavity structure.
8. A high efficiency vacuum generator as defined in claim 1, wherein: and a plurality of fastening pieces (9) are distributed on the periphery of the boss (105), each fastening piece (9) comprises a fastening screw and a fastening nut, and each fastening screw penetrates through the boss (105) and the mounting bracket (3) and is matched with the fastening nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922056262.0U CN211174824U (en) | 2019-11-25 | 2019-11-25 | High-efficiency vacuum generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922056262.0U CN211174824U (en) | 2019-11-25 | 2019-11-25 | High-efficiency vacuum generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211174824U true CN211174824U (en) | 2020-08-04 |
Family
ID=71828983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922056262.0U Active CN211174824U (en) | 2019-11-25 | 2019-11-25 | High-efficiency vacuum generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211174824U (en) |
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2019
- 2019-11-25 CN CN201922056262.0U patent/CN211174824U/en active Active
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