CN215109496U - Screw vacuum pump with overload overflow valve - Google Patents
Screw vacuum pump with overload overflow valve Download PDFInfo
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- CN215109496U CN215109496U CN202120680650.0U CN202120680650U CN215109496U CN 215109496 U CN215109496 U CN 215109496U CN 202120680650 U CN202120680650 U CN 202120680650U CN 215109496 U CN215109496 U CN 215109496U
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- overflow valve
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- vacuum pump
- overload
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Abstract
The utility model discloses a screw vacuum pump with an overload overflow valve, which comprises a shell and is an external frame structure of the vacuum pump, wherein the outer surface of one end of the shell is provided with a motor, and the outer surface of the front end of the shell is provided with a water-cooling spacer sleeve; the end cover is positioned at the tail end of the shell, and the inner surface of the end cover is connected with a rotor in a clamping manner; the overflow valve is arranged on the outer surface of the shell, and the inner surface of the overflow valve is mutually attached to the outer surface of the shell; the sealing frame is arranged on the inner surface of the front end of the shell and is parallel to the end cover; and the high-sealing bearing is positioned at the front end of the sealing frame and fixedly connected to the inner surface of the front end of the shell. This screw vacuum pump of area overload overflow valve drives the overflow valve rotation by casing internal pressure to by overflow launder and outlet mutual correspondence, be convenient for timely control the inside pressure of casing, thereby increased holistic stability.
Description
Technical Field
The utility model relates to a vacuum pump technical field specifically is a screw vacuum pump of area overload overflow valve.
Background
The screw vacuum pump is an air extraction device which utilizes a pair of screws to synchronously rotate in a high speed and reverse direction in a pump shell to generate air suction and exhaust functions, can extract gas containing a large amount of water vapor and a small amount of dust, is reused in the enterprise field with higher requirements on cleaning and vacuum, and is widely applied to the aspects of domestic pharmacy, chemical industry and the like by virtue of good performance and working principle.
However, in the process of using the screw vacuum pump, the internal pressure is too large, so that the control is inconvenient, the air pressure is disordered, the service life of internal parts is influenced, the flow cannot be controlled, and the heat generated in the process of operation is inconvenient to discharge, so that the overall practicability is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take screw vacuum pump of overload overflow valve to provide the in-process that uses at screw vacuum pump in solving above-mentioned background art, inside pressure is too big, is not convenient for control, leads to the atmospheric pressure confusion, influences the life of internals, can't control flow, and the heat that the in-process of function produced simultaneously is not convenient for discharge, thereby has reduced the problem of holistic practicality.
In order to achieve the above object, the utility model provides a following technical scheme: a screw vacuum pump with an overload overflow valve comprises:
the outer shell is of an external frame structure of the vacuum pump, a motor is arranged on the outer surface of one end of the outer shell, and a water-cooling spacer bush is arranged on the outer surface of the front end of the outer shell;
the end cover is positioned at the tail end of the shell, and the inner surface of the end cover is connected with a rotor in a clamping manner;
the overflow valve is arranged on the outer surface of the shell, and the inner surface of the overflow valve is mutually attached to the outer surface of the shell;
the sealing frame is arranged on the inner surface of the front end of the shell and is parallel to the end cover;
and the high-sealing bearing is positioned at the front end of the sealing frame and fixedly connected to the inner surface of the front end of the shell.
Preferably, an expansion chamber is arranged in the shell, overflow grooves are preset at the upper end and the lower end of the expansion chamber, the overflow grooves are of an X-shaped structure, and the diameter of the expansion chamber is equal to that of the inner wall of the shell.
Preferably, the output end of the motor is connected with a first screw rod, the front end outer surface of the first screw rod is connected with a driving gear, the outer surface of the driving gear is meshed with the outer surface of a driven gear, the middle end of the driven gear is fixedly connected with a second screw rod, and the first screw rod and the second screw rod are arranged in parallel.
Preferably, the first screw and the second screw are connected with the rotor, the first screw and the second screw are movably connected with a high-sealing bearing, and the diameter of the high-sealing bearing is the same as the outer diameter of the expansion chamber.
Preferably, the overflow valve and the threaded sleeve are of an integrated structure, and the threaded sleeve is in threaded connection with the shell.
Preferably, a water outlet is preset in the overflow valve, the water outlet is annularly distributed in the overflow valve, the diameter of the water outlet is larger than that of the overflow groove, and the central axis of the water outlet is parallel to the central axis of the connecting port.
Preferably, the outer surface of the shell is provided with a water inlet and a water outlet, and the position of the water inlet is symmetrical to that of the water outlet.
Compared with the prior art, the beneficial effects of the utility model are that: this screw vacuum pump with overload overflow valve:
1. the casing of the vacuum pump is round, the expansion chamber inside the casing is double-round, and the gap between the expansion chamber and the screw rod is stable, so that the outer surface of the casing and the overflow valve are attached to each other while the operation is stable, the overflow valve is driven to rotate by the pressure inside the casing, and the overflow groove and the water outlet correspond to each other, so that the pressure inside the casing can be controlled in time conveniently, and the overall stability is improved;
2. the threaded sleeves are arranged at the two ends of the overflow valve, so that when the overflow valve is in a rotating state, the water outlet and the overflow groove are prevented from being staggered, a positioning effect can be achieved, the sealing performance of the connecting surface of the overflow valve and the shell is ensured, and the internal pressure can be stably controlled;
3. through set up high sealed bearing and sealed frame in the vacuum pump, when can guarantee screw rod rotational stability, can also reduce the clearance of screw rod, infiltration dust when avoiding the screw rod to operate, and lead to the friction to produce the noise to the stability and the durable in use that have improved the screw rod operation.
Drawings
FIG. 1 is a schematic view of the overall internal structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the overflow valve of the present invention;
fig. 3 is a schematic view of the overall front view structure of the present invention.
In the figure: 1. a housing; 2. a motor; 3. a first screw; 4. a drive gear; 5. a driven gear; 6. a second screw; 7. an end cap; 8. a sealing frame; 9. a rotor; 10. an expansion chamber; 11. an overflow valve; 12. a threaded sleeve; 13. a connecting port; 14. a high seal bearing; 15. water-cooling spacer bushes; 16. a water inlet; 17. a water outlet; 18. a water outlet; 19. an overflow trough.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a screw vacuum pump with an overload overflow valve comprises:
the vacuum pump comprises a shell 1, a motor 2, a water cooling spacer bush 15, a water cooling spacer bush and a water cooling spacer bush, wherein the shell 1 is of an external frame structure of the vacuum pump;
the end cover 7 is positioned at the tail end of the shell 1, and the inner surface of the end cover 7 is connected with a rotor 9 in a clamping way;
the overflow valve 11 is arranged on the outer surface of the shell 1, and the inner surface of the overflow valve 11 is mutually attached to the outer surface of the shell 1;
the sealing frame 8 is arranged on the inner surface of the front end of the shell 1, and the sealing frame 8 is arranged in parallel with the end cover 7;
the high-sealing bearing 14 is positioned at the front end of the sealing frame 8, and the high-sealing bearing 14 is fixedly connected to the inner surface of the front end of the shell 1;
an expansion chamber 10 is arranged in the shell 1, overflow grooves 19 are preset at the upper end and the lower end of the expansion chamber 10, the overflow grooves 19 are in an X-shaped structure, the diameter of the expansion chamber 10 is equal to that of the inner wall of the shell 1, the expansion chamber 10 releases the internal pressure to the inner wall of the overflow valve 11 through the arranged overflow grooves 19, and the internal pressure can be compressed in a concentrated manner according to the shape structure of the overflow grooves 19, so that the overflow valve 11 can be driven conveniently;
the output end of the motor 2 is connected with a first screw rod 3, the outer surface of the front end of the first screw rod 3 is connected with a driving gear 4, the outer surface of the driving gear 4 is meshed with the outer surface of a driven gear 5, the middle end of the driven gear 5 is fixedly connected with a second screw rod 6, the first screw rod 3 and the second screw rod 6 are arranged in parallel, the motor 2 rotates the first screw rod 3, and the first screw rod 3 and the second screw rod 6 move in opposite directions through meshing transmission of the high-precision driving gear 4 and the driven gear 5, and certain gaps exist between the first screw rod 3 and the expansion chamber 10 and between the second screw rod 6 and the expansion chamber 10, so that noise generated by transmission is reduced;
the first screw 3 and the second screw 6 are connected with the rotor 9, the first screw 3 and the second screw 6 are movably connected with the high sealing bearing 14, the diameter of the high sealing bearing 14 is the same as the outer diameter of the expansion chamber 10, the first screw 3 and the second screw 6 are connected with the corrected rotor 9, the rotor 9 reduces the friction between the rotor 9 and the first screw 3 and the second screw 6, the operation is more stable, the transmission force can be enhanced without lubricating oil, and therefore the operation stability is improved;
the overflow valve 11 and the threaded sleeve 12 are of an integrated structure, the threaded sleeve 12 is in threaded connection with the shell 1, the overflow valve 11 is attached to the outside of the shell 1, when the pressure inside the shell 1 is too high, the overflow valve 11 is extruded, the overflow valve 11 axially rotates, the threaded sleeve 12 ensures the sealing performance of the connection surface of the overflow valve 11 and the shell 1, the positions of the overflow groove 19 and the water outlet 18 can correspond to each other, and the overload fluid can be conveniently discharged;
a water outlet 18 is preset in the overflow valve 11, the water outlets 18 are annularly distributed in the overflow valve 11, the diameter of each water outlet 18 is larger than that of each overflow groove 19, the central axis of each water outlet 18 is parallel to that of each connecting port 13, a plurality of water outlets 18 are arranged in the overflow valve 11, the water outlets 18 are connected with the connecting ports 13, and the connecting ports 13 are connected with a pipeline;
a water inlet 16 and a water outlet 17 are formed in the outer surface of the shell 1, the position of the water inlet 16 and the position of the water outlet 17 are symmetrical to each other, the water inlet 16 is located at the output ends of the first screw rod 3 and the second screw rod 6, and the water outlet 17 is located at the tail ends of the first screw rod 3 and the second screw rod 6, so that the vacuum pump can conveniently suck air and exhaust air.
The working principle is as follows: when the screw vacuum pump with the overload overflow valve is used, firstly, the connecting port 13 is connected with a corresponding pipeline, then, the high-sealing bearing 14 and the outer surface of the shell 1 are staggered, the water outlet 18 and the overflow groove 19 are not overlapped, then, the motor 2 is started, the motor 2 and the rotor 9 drive the first screw 3, the first screw 3 drives the second screw 6 to rotate under the meshing transmission of the driving gear 4 and the driven gear 5, the second screw 6 and the first screw 3 rotate in the direction, the water inlet 16 and the water outlet 17 are sucked and exhausted, so that the whole screw vacuum pump normally operates, the high-sealing bearing 14 and the sealing frame 8 ensure the sealing performance of the connecting surface of the first screw 3 and the second screw 6, the vibration caused by the occurrence of a gap in the operation process is avoided, the noise is reduced, and meanwhile, the temperature reduction treatment is carried out on the inner part of the shell 1 by the water-cooling spacer sleeve 15, avoid the unable release of heat that inside high-speed rotation produced, end cover 7 is spacing to the one end of first screw rod 3 and second screw rod 6, make first screw rod 3 and second screw rod 6 and expansion chamber 10's clearance remain stable, when expansion chamber 10 internal pressure is too big, transmit internal pressure to overflow valve 11 internal surface through overflow launder 19, water pressure extrudees overflow valve 11, make overflow valve 11 axial rotation, and guarantee the leakproofness that overflow valve 11 is connected the face with shell 1 by thread bush 12, can correspond overflow launder 19 and outlet 18 position each other, inside fluid transmits to outlet 18 from overflow launder 19 in, outlet 18 transmits the fluid to the pipeline that corresponds in through connector 13, be convenient for discharge the fluid that transships and overflow, thereby whole practicality has been increased.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a take screw vacuum pump of overload overflow valve which characterized in that includes:
the vacuum pump comprises a shell (1) which is an external frame structure of the vacuum pump, wherein a motor (2) is arranged on the outer surface of one end of the shell (1), and a water-cooling spacer bush (15) is arranged on the outer surface of the front end of the shell (1);
the end cover (7) is positioned at the tail end of the shell (1), and the inner surface of the end cover (7) is connected with a rotor (9) in a clamping manner;
the overflow valve (11) is arranged on the outer surface of the shell (1), and the inner surface of the overflow valve (11) is mutually attached to the outer surface of the shell (1);
the sealing frame (8) is arranged on the inner surface of the front end of the shell (1), and the sealing frame (8) is arranged in parallel with the end cover (7);
and the high-sealing bearing (14) is positioned at the front end of the sealing frame (8), and the high-sealing bearing (14) is fixedly connected to the inner surface of the front end of the shell (1).
2. The screw vacuum pump with the overload overflow valve according to claim 1, characterized in that: an expansion chamber (10) is arranged in the shell (1), overflow grooves (19) are preset at the upper end and the lower end of the expansion chamber (10), the overflow grooves (19) are of an X-shaped structure, and the diameter of the expansion chamber (10) is equal to that of the inner wall of the shell (1).
3. The screw vacuum pump with the overload overflow valve according to claim 1, characterized in that: the output of motor (2) is connected with first screw rod (3), the front end surface of first screw rod (3) is connected with drive gear (4), drive gear (4) surface and driven gear (5) surface intermeshing, driven gear (5) middle-end fixedly connected with second screw rod (6), first screw rod (3) and second screw rod (6) parallel arrangement.
4. A screw vacuum pump with an overload relief valve according to claim 3, wherein: the first screw (3) and the second screw (6) are connected with the rotor (9) mutually, the first screw (3) and the second screw (6) are movably connected with a high-sealing bearing (14), and the diameter of the high-sealing bearing (14) is the same as the outer diameter of the expansion chamber (10).
5. The screw vacuum pump with the overload overflow valve according to claim 1, characterized in that: the overflow valve (11) and the threaded sleeve (12) are of an integrated structure, and the threaded sleeve (12) is in threaded connection with the shell (1).
6. The screw vacuum pump with the overload overflow valve according to claim 1, characterized in that: the overflow valve (11) is internally provided with a water outlet (18) in advance, the water outlet (18) is annularly distributed in the overflow valve (11), the diameter of the water outlet (18) is larger than that of the overflow groove (19), and the central axis of the water outlet (18) is parallel to the central axis of the connecting port (13).
7. The screw vacuum pump with the overload overflow valve according to claim 1, characterized in that: a water inlet (16) and a water outlet (17) are formed in the outer surface of the shell (1), and the position of the water inlet (16) is symmetrical to the position of the water outlet (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120680650.0U CN215109496U (en) | 2021-04-02 | 2021-04-02 | Screw vacuum pump with overload overflow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120680650.0U CN215109496U (en) | 2021-04-02 | 2021-04-02 | Screw vacuum pump with overload overflow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215109496U true CN215109496U (en) | 2021-12-10 |
Family
ID=79346800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120680650.0U Active CN215109496U (en) | 2021-04-02 | 2021-04-02 | Screw vacuum pump with overload overflow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215109496U (en) |
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2021
- 2021-04-02 CN CN202120680650.0U patent/CN215109496U/en active Active
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