CN209354354U - A kind of Roots vaccum pump with overload warning function - Google Patents
A kind of Roots vaccum pump with overload warning function Download PDFInfo
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- CN209354354U CN209354354U CN201822172913.8U CN201822172913U CN209354354U CN 209354354 U CN209354354 U CN 209354354U CN 201822172913 U CN201822172913 U CN 201822172913U CN 209354354 U CN209354354 U CN 209354354U
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- chamber
- valve core
- conducting ring
- pump housing
- sealed valve
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Abstract
A kind of Roots vaccum pump with overload warning function, including the pump housing, the pump housing lateral surface is equipped with alarm lamp, the pump housing is divided into intake chamber, rotor chamber, chamber is discharged, the discharge chamber, which is connected to inside side with intake chamber, is equipped with support base, the support base top is fixed with sealed valve core, plunger cavity is provided in the middle part of the sealed valve core, the sealed valve core top respective pump body position is equipped with valve deck, the valve deck bottom end is fixed with plunger rod, the plunger rod bottom end is inserted into inside the plunger cavity of sealed valve core, the plunger rod end point is equipped with the first conducting ring, the plunger cavity inner lower edge is equipped with the second conducting ring, first conducting ring, second conducting ring is connected on the circuit of alarm lamp.The utility model can reduce under overload the equipment reaction time, and the identification and processing convenient for operator to overload can in real time be monitored the overload situations of the pump housing.
Description
Technical field
The utility model relates to lobe pump production technical fields, and in particular to a kind of Roots with overload warning function is true
Sky pump.
Background technique
Roots vaccum pump, which refers to, pumps the built-in lobed rotor there are two opposite direction synchronous rotary, between rotor, rotor and pump
There is slight gap between shell inner wall and a kind of non-touching positive-displacement vacuum pump.Roots vaccum pump is widely used in vacuum metallurgy
Smelting, degassing, rolling and chemical industry, food, the vacuum distillation in medical industry, vacuum concentration and vacuum drying etc. exist
It is also widely applied on the devices such as petroleum, weaving, plastics, electric power, aerospace simulation.
In the Roots vaccum pump course of work, at exhaust port when pressure overload, timely overload signal cannot be carried out
Transmission increases the processing time, is not only easily damaged the pump housing, but also will cause exhaust end connecting pipe and burst, influences lobe pump
Service life.
Utility model content
What the utility model to be overcome is in the Roots vaccum pump course of work, at exhaust port when pressure overload, no
Timely overload signal can be transmitted, increase the processing time, be not only easily damaged the pump housing, but also will cause exhaust end connection
Pipe bursting, the problem of influencing the service life of lobe pump, it is therefore an objective to which a kind of Roots vacuum with overload warning function is provided
Pump.
A kind of Roots vaccum pump with overload warning function, including the pump housing, the pump housing lateral surface are equipped with police instruction
Lamp, the pump housing are divided into intake chamber, rotor chamber, discharge chamber, and the intake chamber is set to rotor chamber top, and upper end connects
Inhalation interface is connect, the discharge chamber is set to rotor chamber lower part, and the discharge chamber ring is in rotor chamber one end and suction chamber
Room connection, the other end connect discharge interface, and the discharge chamber, which is connected to inside side with intake chamber, is equipped with support base, the branch
Support seat top is fixed with sealed valve core, is provided with plunger cavity, the sealed valve core top respective pump position in the middle part of the sealed valve core
It sets and valve deck is installed, the valve deck bottom end is fixed with plunger rod, and the plunger rod bottom end is inserted into the plunger cavity of sealed valve core
Portion, the plunger rod end point are equipped with the first conducting ring, and the plunger cavity inner lower edge is equipped with the second conducting ring, and described
One conducting ring, the second conducting ring are connected on the circuit of alarm lamp.
Further, the sealed valve core bottom end is equipped with valve pad, and the valve pad section is in undercut shape structure, the valve
The inside grooves of pad lower part are equipped with pressing plate, and sealed valve core is bolted in the pressing plate, and the thickness of compressive plate is less than valve pad
Bottom end depth of groove, the pressing plate do not contact support base.
Further, reset spring is installed, the reset spring is surrounded on plunger between the sealed valve core and valve deck
Bar lateral surface, the reset spring not with plunger rod contacts.
Further, the plunger cavity bottom end side of the sealed valve core is equipped with position limiting convex ring, and the position limiting convex ring top is embedding
Extruding spring one end is connect, second conducting ring, which is fixedly mounted on, squeezes the spring other end, and second conducting ring squeezes spring
Not with plunger cavity on the inside of face contact.
The beneficial effects of the utility model are:
The utility model structure is simple, and by the way that the discharge chamber of the pump housing to be connected to intake chamber, support is arranged in access
Seat, support base top are equipped with sealed valve core, are equipped with plunger cavity in the middle part of sealed valve core, sealed valve core top corresponds to and installs on the pump housing
There is valve deck, valve deck bottom end is provided with plunger rod, and plunger rod end point is equipped with the first conducting ring, is equipped with second inside plunger cavity
Conducting ring, plunger rod end are located inside plunger cavity, when discharge chamber and intake chamber pressure difference and sealed valve core it is effective
When the product of active area is more than the self weight of sealed valve core, sealed valve core jacks up upwards under gas pressure, at this time due to sealing
Spool, which moves up, drives the second conducting ring to contact with the first conducting ring, so that the alarm lamp being located at outside the pump housing lights,
The equipment reaction time under overload is reduced, identification and processing convenient for operator to overload can be in real time to the pump housings
Overload situations are monitored.
Detailed description of the invention
Fig. 1 is the structure chart of the utility model；
Fig. 2 is part A enlarged drawing in Fig. 1 of the utility model；
Fig. 3 is the pump housing part A enlarged drawing in Fig. 1 in the case of an overload of the utility model；
In figure: 1. pump housings；2. alarm lamp；12. intake chamber；13. rotor chamber；14. chamber is discharged；15. sucking
Interface；16. discharge interface；17. support base；21. sealed valve core；22. plunger cavity；23. valve deck；24. plunger rod；25. first leads
Electric ring；26. the second conducting ring；31. valve pad；32. pressing plate；41. reset spring；51. position limiting convex ring；52. squeezing spring.
Specific embodiment
It is easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below
In conjunction with being specifically illustrating, the utility model is further described.
Embodiment 1
As shown in Figure 1, Figure 2；A kind of Roots vaccum pump with overload warning function, including the pump housing 1,1 outside of the pump housing
Face is equipped with alarm lamp 2, and the pump housing 1 divides for intake chamber 12, rotor chamber 13, chamber 14 is discharged, and intake chamber 12, which is set to, to be turned
13 top of sub-chamber, upper end connect inhalation interface 15, discharge chamber 14 be set to 13 lower part of rotor chamber, discharge 14 ring of chamber in turn
13 one end of sub-chamber is connected to intake chamber 12, and the other end connects discharge interface 16, and discharge chamber 14 is connected to intake chamber 12
Support base 17 is equipped with inside side, 17 top of support base is fixed with sealed valve core 21, plunger cavity 22 is provided in the middle part of sealed valve core 21,
21 top of sealed valve core corresponds to 1 position of the pump housing and is equipped with valve deck 23, and 23 bottom end of valve deck is fixed with plunger rod 24,24 bottom end of plunger rod
It is inserted into inside the plunger cavity 22 of sealed valve core 21,24 end point of plunger rod is equipped with the first conducting ring 25,22 inside of plunger cavity
Bottom end is equipped with the second conducting ring 26, and the first conducting ring 25, the second conducting ring 26 are connected on the circuit of alarm lamp 2.
21 bottom end of sealed valve core is equipped with valve pad 31, and 31 section of valve pad is in undercut shape structure, the groove of 31 lower part of valve pad
Inside is equipped with pressing plate 32, and sealed valve core 21 is bolted in pressing plate 32, and it is deep that 32 thickness of pressing plate is less than 31 bottom end groove of valve pad
Degree, pressing plate 32 do not contact support base 17.
Reset spring 41 is installed, reset spring 41 is surrounded on 24 outside of plunger rod between sealed valve core 21 and valve deck 23
Face, reset spring 41 are not contacted with plunger rod 24.
A kind of Roots vaccum pump with overload warning function, working principle:
As shown in Figure 2 and Figure 3；1 lateral surface of the pump housing be equipped with alarm lamp 2, by by the discharge chamber 14 of the pump housing 1 and inhale
Enter the connection of chamber 12, support base 17 is set in access, 17 top of support base is equipped with sealed valve core 21, sets in the middle part of sealed valve core 21
There is plunger cavity 22,21 top of sealed valve core corresponds to and is equipped with valve deck 23 on the pump housing 1, and 23 bottom end of valve deck is provided with plunger rod 24, column
24 end point of stopper rod is equipped with the first conducting ring 25, and the second conducting ring 26,24 end of plunger rod position are equipped with inside plunger cavity 22
Inside plunger cavity 22, under normal operating condition, the first conducting ring 25 is not contacted with the second conducting ring 26, and alarm lamp 2 is not
It is powered；When the product of discharge chamber 14 and the effective active area of the pressure difference and sealed valve core 21 of intake chamber 15 is more than sealing
When the self weight of spool 21, sealed valve core 21 jacks up, under gas pressure at this time since sealed valve core 21 moves up drive upwards
Second conducting ring 26 is contacted with the first conducting ring 25, so that the alarm lamp 2 being located at outside the pump housing 1 lights.
Embodiment 2
As shown in Figure 1, Figure 2；A kind of Roots vaccum pump with overload warning function, including the pump housing 1,1 outside of the pump housing
Face is equipped with alarm lamp 2, and the pump housing 1 divides for intake chamber 12, rotor chamber 13, chamber 14 is discharged, and intake chamber 12, which is set to, to be turned
13 top of sub-chamber, upper end connect inhalation interface 15, discharge chamber 14 be set to 13 lower part of rotor chamber, discharge 14 ring of chamber in turn
13 one end of sub-chamber is connected to intake chamber 12, and the other end connects discharge interface 16, and discharge chamber 14 is connected to intake chamber 12
Support base 17 is equipped with inside side, 17 top of support base is fixed with sealed valve core 21, plunger cavity 22 is provided in the middle part of sealed valve core 21,
21 top of sealed valve core corresponds to 1 position of the pump housing and is equipped with valve deck 23, and 23 bottom end of valve deck is fixed with plunger rod 24,24 bottom end of plunger rod
It is inserted into inside the plunger cavity 22 of sealed valve core 21,24 end point of plunger rod is equipped with the first conducting ring 25,22 inside of plunger cavity
Bottom end is equipped with the second conducting ring 26, and the first conducting ring 25, the second conducting ring 26 are connected on the circuit of alarm lamp 2.
21 bottom end of sealed valve core is equipped with valve pad 31, and 31 section of valve pad is in undercut shape structure, the groove of 31 lower part of valve pad
Inside is equipped with pressing plate 32, and sealed valve core 21 is bolted in pressing plate 32, and it is deep that 32 thickness of pressing plate is less than 31 bottom end groove of valve pad
Degree, pressing plate 32 do not contact support base 17.
Reset spring 41 is installed, reset spring 41 is surrounded on 24 outside of plunger rod between sealed valve core 21 and valve deck 23
Face, reset spring 41 are not contacted with plunger rod 24.
A kind of Roots vaccum pump with overload warning function, working principle:
As shown in Figure 2 and Figure 3；1 lateral surface of the pump housing be equipped with alarm lamp 2, by by the discharge chamber 14 of the pump housing 1 and inhale
Enter the connection of chamber 12, support base 17 is set in access, 17 top of support base is equipped with sealed valve core 21, sets in the middle part of sealed valve core 21
There is plunger cavity 22,21 top of sealed valve core corresponds to and is equipped with valve deck 23 on the pump housing 1, and 23 bottom end of valve deck is provided with plunger rod 24, column
24 end point of stopper rod is equipped with the first conducting ring 25, and the second conducting ring 26,24 end of plunger rod position are equipped with inside plunger cavity 22
Inside plunger cavity 22, under normal operating condition, the first conducting ring 25 is not contacted with the second conducting ring 26, and alarm lamp 2 is not
It is powered；When the product of discharge chamber 14 and the effective active area of the pressure difference and sealed valve core 21 of intake chamber 15 is more than sealing
When the self weight of spool 21, sealed valve core 21 jacks up, under gas pressure at this time since sealed valve core 21 moves up drive upwards
Second conducting ring 26 is contacted with the first conducting ring 25, so that the alarm lamp 2 being located at outside the pump housing 1 lights.
The 22 bottom end side of plunger cavity of sealed valve core 21 is equipped with position limiting convex ring 51, and the interlocking of 51 top of position limiting convex ring squeezes spring
52 one end, the second conducting ring 26 be fixedly mounted on squeeze 52 other end of spring, the second conducting ring 26, squeeze spring 52 not with plunger
22 inside face contact of chamber.Avoid the first conducting ring and the second conducting ring worn piston chamber or plunger rod.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (4)
1. a kind of Roots vaccum pump with overload warning function, which is characterized in that including the pump housing (1), on the outside of the pump housing (1)
Face is equipped with alarm lamp (2), and the pump housing (1) is divided into intake chamber (12), rotor chamber (13), discharge chamber (14), institute
Intake chamber (12) are stated set on rotor chamber (13) top, upper end connects inhalation interface (15), and the discharge chamber (14) is set to
Rotor chamber (13) lower part, discharge chamber (14) ring is connected in rotor chamber (13) one end with intake chamber (12), another
End connection discharge interface (16), the discharge chamber (14) are connected to inside side with intake chamber (12) and are equipped with support base (17),
Support base (17) top is fixed with sealed valve core (21), is provided with plunger cavity (22) in the middle part of the sealed valve core (21), described
Sealed valve core (21) top corresponds to the pump housing (1) position and is equipped with valve deck (23), and valve deck (23) bottom end is fixed with plunger rod
(24), plunger rod (24) bottom end is inserted into plunger cavity (22) inside of sealed valve core (21), plunger rod (24) end
Place is equipped with the first conducting ring (25), and plunger cavity (22) inner lower edge is equipped with the second conducting ring (26), and described first leads
Electric ring (25), the second conducting ring (26) are connected on the circuit of alarm lamp (2).
2. a kind of Roots vaccum pump with overload warning function according to claim 1, which is characterized in that the sealing
Spool (21) bottom end is equipped with valve pad (31), and valve pad (31) section is in undercut shape structure, valve pad (31) lower part
Inside grooves are equipped with pressing plate (32), and the pressing plate (32) is bolted sealed valve core (21), pressing plate (32) thickness
Less than valve pad (31) bottom end depth of groove, the pressing plate (32) does not contact support base (17).
3. a kind of Roots vaccum pump with overload warning function according to claim 1, which is characterized in that the sealing
It is equipped between spool (21) and valve deck (23) reset spring (41), the reset spring (41) is surrounded on the outside of plunger rod (24)
Face, the reset spring (41) do not contact with plunger rod (24).
4. a kind of Roots vaccum pump with overload warning function according to claim 1, which is characterized in that the sealing
Plunger cavity (22) the bottom end side of spool (21) is equipped with position limiting convex ring (51), and position limiting convex ring (51) the top interlocking squeezes spring
(52) one end, second conducting ring (26), which is fixedly mounted on, squeezes spring (52) other end, and second conducting ring (26) is squeezed
Pressing spring (52) not with plunger cavity (22) on the inside of face contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822172913.8U CN209354354U (en) | 2018-12-24 | 2018-12-24 | A kind of Roots vaccum pump with overload warning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822172913.8U CN209354354U (en) | 2018-12-24 | 2018-12-24 | A kind of Roots vaccum pump with overload warning function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209354354U true CN209354354U (en) | 2019-09-06 |
Family
ID=67800476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822172913.8U Active CN209354354U (en) | 2018-12-24 | 2018-12-24 | A kind of Roots vaccum pump with overload warning function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209354354U (en) |
-
2018
- 2018-12-24 CN CN201822172913.8U patent/CN209354354U/en active Active
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