CN213511094U - Vacuum pump with explosion-proof structure - Google Patents
Vacuum pump with explosion-proof structure Download PDFInfo
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- CN213511094U CN213511094U CN202022273228.1U CN202022273228U CN213511094U CN 213511094 U CN213511094 U CN 213511094U CN 202022273228 U CN202022273228 U CN 202022273228U CN 213511094 U CN213511094 U CN 213511094U
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- explosion
- proof
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- pump
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Abstract
The utility model discloses a vacuum pump with explosion-proof structure belongs to vacuum pump technical field, including the base, locate the vacuum pump on the base and locate the explosion-proof housing outside the vacuum pump with locate the cover, explosion-proof chamber has in the explosion-proof housing, the top of vacuum pump is equipped with pump intake pipe and pump trachea, be equipped with the first through-hole that supplies the pump intake pipe to pass and the second through-hole that supplies the pump trachea to pass on the explosion-proof housing, be equipped with inflatable housing in the explosion-proof housing, inflatable housing has inflatable chamber in the inflatable housing, the inflatable chamber is located and is inflated the intracavity, it is filled with inert gas to inflate the intracavity, inflatable housing is the PVC material of inflation, be equipped with the exhaust hole with explosion-proof chamber intercommunication on the explosion-proof housing, be equipped with the inflation inlet with inflatable chamber intercommunication on the base, be equipped. The utility model provides a vacuum pump with explosion-proof structure makes vacuum pump and outside air keep apart through inert gas, improves the security performance of vacuum pump.
Description
Technical Field
The utility model relates to a vacuum pump technical field, concretely relates to vacuum pump with explosion-proof construction.
Background
With the development of vacuum applications, a variety of vacuum pumps have been developed, with pumping speeds ranging from a few tenths of liters per second to hundreds of thousands, millions of liters per second; with the increasingly wide requirements of vacuum technology on the application pressure range in the production and scientific research fields, most vacuum pumping systems consisting of several vacuum pumps are required to jointly pump air to meet the requirements of the production and scientific research processes, and because the range of the working pressure related to the vacuum application department is wide, any type of vacuum pump cannot be completely suitable for all working pressure ranges, and different types of vacuum pumps can be used only according to different working pressure ranges and different working requirements; the operating environment of vacuum pump makes the vacuum pump need very high security to satisfy the requirement when practical, but current vacuum pump is related to not deeply in the aspect of explosion-proof for the vacuum pump still has explosion hidden danger in the use.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
Still have the technical problem of explosion hidden danger to vacuum pump among the prior art in the use, the utility model provides a vacuum pump with explosion-proof structure, it makes vacuum pump and outside air keep apart through inert gas, and the vacuum pump is in comparatively safe operational environment.
2. Technical scheme
In order to solve the above problem, the utility model provides a technical scheme does:
the utility model provides a vacuum pump with explosion-proof structure, includes the base, locates the vacuum pump on the base and locates the explosion-proof housing that the cover was located outside the vacuum pump, explosion-proof chamber has in the explosion-proof housing, the top of vacuum pump is equipped with pump intake pipe and pump exhaust pipe, be equipped with the first through-hole that supplies the pump intake pipe to pass and supply the second through-hole that the pump exhaust pipe passed on the explosion-proof housing, be equipped with inflatable housing in the explosion-proof housing, inflatable housing has inflatable chamber in, the vacuum pump is located inflatable chamber, inflatable chamber packs has inert gas, inflatable housing is the PVC material of inflation, be equipped with the exhaust hole with explosion-proof chamber intercommunication on the explosion-proof housing, be equipped with the inflation inlet with inflatable chamber intercommunication on the base, be equipped with the valve in. Inert gas is filled in the inflation cavity, so that the vacuum pump is isolated from the outside air and is in a safer working environment; due to the inflation and expansion performance of the PVC material, other gas components are hardly contained in the inflation cavity, the vacuum pump can work in a relatively pure inert gas environment, and the protection effect of the vacuum pump is guaranteed;
optionally, a pressure relief opening communicated with the inflation cavity is further formed in the base, and a pressure relief valve is arranged in the pressure relief opening.
Optionally, the exhaust hole is connected with an exhaust pipe, one end of the exhaust pipe is connected with the explosion-proof shell, and the other end of the exhaust pipe is bent and arranged downwards.
Optionally, a plurality of gas grooves communicated with the explosion-proof cavity are uniformly formed in the inner wall of the explosion-proof shell, and two adjacent gas grooves are communicated through a plurality of gas channels.
Optionally, a supporting steel plate is arranged inside the explosion-proof shell.
Optionally, the inflatable housing is sealingly connected to the pump inlet duct by a first connecting ring, and the inflatable housing is sealingly connected to the pump outlet duct by a second connecting ring.
Alternatively, the first connection ring may slide up and down in a height direction of the pump inlet pipe, and the second connection ring may slide up and down in a height direction of the pump outlet pipe.
Optionally, a flame retardant layer is disposed within the explosion proof housing.
Optionally, an explosion-proof film is attached to the outer wall of the explosion-proof housing.
Optionally, the inert gas is one of helium, argon and nitrogen
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) inert gas is filled in the inflation cavity, so that the vacuum pump is isolated from the outside air and is in a safer working environment;
(2) due to the inflation and expansion performance of the PVC material, other gas components are hardly contained in the inflation cavity, the vacuum pump can work in a relatively pure inert gas environment, and the protection effect of the vacuum pump is guaranteed;
(3) the PVC material is strong in flexibility and elasticity, so that the PVC material is a suitable material for the inflatable shell, can bear the weight of a plurality of tons of automobiles after being inflated, and can adapt to the larger pressure change in the inflatable cavity;
(4) the arrangement of the air groove and the air channel ensures that when the inflatable shell expands, the air in the explosion-proof cavity can be exhausted outwards from the exhaust hole as far as possible through the air groove and the air channel;
drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic cross-sectional view of the present invention;
fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.
1. A base; 11. an inflation inlet; 111. a valve; 12. a pressure relief port; 121. a pressure relief valve; 2. a vacuum pump; 21. a pump air inlet pipe; 22. a pump air outlet pipe; 3. an explosion-proof housing; 31. an explosion-proof cavity; 32. a first through hole; 33. a second through hole; 34. an exhaust hole; 341. an exhaust pipe; 35. an air tank; 351. a gas channel; 36. a support steel plate; 4. an inflatable housing; 41. an inflation cavity; 5. a first connecting ring; 6. a second connecting ring.
Detailed Description
For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings 1-3.
Example 1
With reference to fig. 1-3, the vacuum pump with an explosion-proof structure of this embodiment includes a base 1, a vacuum pump 2 disposed on the base 1, and an explosion-proof housing 3 disposed outside the vacuum pump 2, the vacuum pump 2 is mounted on the base 1 by screws, the explosion-proof housing 3 is fixed to the base 1 by screws or welding, an explosion-proof cavity 31 is disposed in the explosion-proof housing 3, a pump air inlet pipe 21 and a pump air outlet pipe 22 are disposed at the top of the vacuum pump 2, the pump air inlet pipe 21 and the pump air outlet pipe 22 are respectively disposed at the left and right sides of the vacuum pump 2, a first through hole 32 through which the pump air inlet pipe 21 passes and a second through hole 33 through which the pump air outlet pipe 22 passes are disposed on the explosion-proof housing 3, an inflation housing 4 is disposed in the explosion-proof housing 3, an inflation cavity 41 is disposed in the inflation cavity 4, the vacuum pump 2 is disposed, aerify casing 4 and realize sealing connection for aerifing expanded PVC material, the bottom of aerifing casing 4 and base 1 through the mode that bonds, the side and the top surface of aerifing casing 4 and explosion-proof casing 3 do not have direct relation of connection, only have when aerifing casing 4 and aerifing the butt relation of expanding the time with explosion-proof casing 3 inner wall, be equipped with the exhaust hole 34 with explosion-proof chamber 31 intercommunication on the explosion-proof casing 3, be equipped with the inflation inlet 11 with aerifing chamber 41 intercommunication on the base 1, be equipped with valve 111 in the inflation inlet 11.
The working principle of the embodiment is as follows: when the inert gas is injected into the inflation cavity 41, the valve 111 is opened, air is injected into the explosion-proof cavity 31 through the vent hole 34 to increase the pressure in the explosion-proof cavity 31, along with the continuous increase of the pressure in the explosion-proof cavity 31, the gas in the inflation shell 4 contracts under the action of the difference of the internal and external pressures, the gas in the inflation shell is continuously discharged outwards from the inflation port 11 until the inflation cavity 41 is in a relatively vacuum state, at this time, a gas injection pipe of the inert gas is connected with the inflation port 11, the vent hole is opened, and the inert gas is continuously filled into the inflation cavity 41 to expand the inflation shell 4 to abut against the inner wall of the explosion-proof shell 3.
By adopting the structural design, the inflation cavity 41 is filled with inert gas, so that the vacuum pump is isolated from the outside air and is in a safer working environment; in the time gap from the completion of the exhaust in the inflation cavity 41 to the connection with the gas injection pipe, air cannot enter the inflation cavity 41 due to the high pressure in the explosion-proof cavity 31, so that other gas components are hardly contained in the inflation cavity 41 in the subsequent inert gas inflation process, the vacuum pump can work in a relatively pure inert gas environment, and the protection effect of the vacuum pump is guaranteed; the PVC material is strong in flexibility and rich in elasticity, so that the PVC material is used as a proper material for the inflatable shell 4, can bear the weight of a few tons of automobiles after being inflated, and can adapt to the larger pressure change in the inflatable cavity.
Example 2
With reference to fig. 1-3, in the vacuum pump with an explosion-proof structure according to the present embodiment, compared with embodiment 1, a pressure relief opening 12 communicated with the inflation cavity 41 is further disposed on the base 1, and a pressure relief valve 121 is disposed in the pressure relief opening 12.
When the inflation housing 4 reaches the maximum expansion degree, the inert gas is continuously filled into the inflation cavity 41, so that the pressure in the inflation cavity 41 is too high and is easy to explode, the pressure relief valve 121 can lead out the redundant pressure in the inflation cavity 41, and the safety of filling the inert gas is improved.
Example 3
With reference to fig. 1-3, in the vacuum pump with an explosion-proof structure according to the present embodiment, compared with embodiment 1 or 2, an exhaust pipe 341 is connected to the exhaust hole 34, one end of the exhaust pipe 341 is welded to the explosion-proof housing 3, and the other end is bent and disposed downward.
The blast pipe 341 can play the effect of direction to the gas of following exhaust hole 34 exhaust, simultaneously because the setting down after the blast pipe 341 other end is buckled, in daily use, in the dust impurity in the air is difficult for getting into explosion-proof chamber 31 through blast pipe 341, avoids sharp thing to get into and causes the damage of aerifing casing 4 in the explosion-proof chamber 31.
Example 4
With reference to fig. 1-3, compared with any one of embodiments 1-3, in the vacuum pump with an explosion-proof structure of this embodiment, a plurality of air grooves 35 communicated with the explosion-proof cavity 31 are uniformly formed on the inner wall of the explosion-proof housing 3, and two adjacent air grooves 35 are communicated through a plurality of air channels 351.
When the inflation shell 4 is inflated and expanded to abut against the inner wall of the explosion-proof shell 3, part of the gas is easily extruded at the gap between the inflation shell 4 and the explosion-proof shell 3, and the connecting channel between the position where the gas is located and the exhaust hole 34 is blocked by the inflation shell 4 and the inner wall of the explosion-proof shell 3, so that the inflation shell 4 cannot be completely unfolded after being restarted.
Example 5
With reference to fig. 1 to 3, in the vacuum pump with an explosion-proof structure according to the present embodiment, compared with any one of embodiments 1 to 4, a supporting steel plate 36 is provided inside the explosion-proof housing 3.
The setting of supporting steel plate 36 makes the holistic structural strength of explosion-proof housing 3 obtain very big promotion, even the vacuum pump explodes in inside also can realize good protecting effect, reduces the injury for outside operating personnel.
In this embodiment, the explosion-proof housing 3 is made of an aluminum alloy material, the explosion-proof housing 3 has good protection strength and heat dissipation effect, and heat generated during the operation of the vacuum pump can be discharged outwards through the wall body of the explosion-proof housing 3 as much as possible.
Example 6
With reference to fig. 1 to 3, in the vacuum pump having an explosion-proof structure according to the present embodiment, compared with any one of embodiments 1 to 3, the inflatable housing 4 is hermetically connected to the pump inlet pipe 21 through the first connection ring 5, and the inflatable housing 4 is hermetically connected to the pump outlet pipe 22 through the second connection ring 6.
In this embodiment, the first connecting ring 5 and the second connecting ring 6 are made of rubber, the first connecting ring 5 and the second connecting ring 6 are connected with the inflatable shell 4 in a bonding manner, and the first connecting ring 5, the second connecting ring 6 are connected with the pump inlet pipe 21 and the pump outlet pipe 22 in a butt sealing manner.
Example 7
With reference to fig. 1 to 3, in the vacuum pump having the explosion-proof structure according to the present embodiment, compared with any one of embodiments 1 to 6, the first connection ring 5 is slidable up and down along the height direction of the pump inlet pipe 21, and the second connection ring 6 is slidable up and down along the height direction of the pump outlet pipe 22.
When the air in the inflation cavity 41 is exhausted outwards, the first connecting ring 5 can slide downwards along the height direction of the pump air inlet pipe 21, the second connecting ring 6 can slide downwards along the height direction of the pump air outlet pipe 22, and both the first connecting ring 5 and the second connecting ring 6 slide downwards, so that the upper part of the inflation shell 4 is close to the vacuum pump 2 as much as possible, the air in the inflation cavity 41 is exhausted outwards as much as possible, and residues are reduced.
Example 8
With reference to fig. 1 to 3, in the vacuum pump with an explosion-proof structure according to this embodiment, compared with any one of embodiments 1 to 7, a flame retardant layer is disposed in the explosion-proof housing 3.
In this embodiment, fire-retardant layer is for filling in the fire retardant of explosion-proof housing 3 inside, and the threat of outside naked light to the vacuum pump can effectual isolated to the fire retardant, makes explosion-proof housing 3 further improve to the protective effect of vacuum pump.
Example 9
With reference to fig. 1 to 3, in the vacuum pump with an explosion-proof structure according to the present embodiment, compared with any one of embodiments 1 to 8, an explosion-proof film is attached to an outer wall of the explosion-proof housing 3.
The explosion-proof film is a metal film which is arranged on the upper part of the pressure container to prevent the container from exploding, and is a safety device. Also known as rupture disk or rupture disk. When the pressure in the container exceeds a certain limit, the film is firstly broken, so that the pressure in the container can be reduced, and explosion is avoided.
Example 10
With reference to fig. 1 to 3, in the vacuum pump having an explosion-proof structure according to this embodiment, compared with any one of embodiments 1 to 9, the inert gas is one of helium, argon, and nitrogen.
The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a vacuum pump with explosion-proof structure which characterized in that: comprises a base (1), a vacuum pump (2) arranged on the base (1) and an explosion-proof shell (3) arranged outside the vacuum pump (2) and covered with a cover, wherein an explosion-proof cavity (31) is arranged in the explosion-proof shell (3), a pump air inlet pipe (21) and a pump air outlet pipe (22) are arranged at the top of the vacuum pump (2), a first through hole (32) for the pump air inlet pipe (21) to pass through and a second through hole (33) for the pump air outlet pipe (22) to pass through are arranged on the explosion-proof shell (3), an inflation shell (4) is arranged in the explosion-proof shell (3), an inflation cavity (41) is arranged in the inflation cavity (41), an inert gas is filled in the inflation cavity (41), the inflation shell (4) is made of inflation PVC material, an exhaust hole (34) communicated with the explosion-proof cavity (31) is arranged on the explosion-proof shell (3), the base (1) is provided with an inflation inlet (11) communicated with the inflation cavity (41), and a valve (111) is arranged in the inflation inlet (11).
2. A vacuum pump having an explosion-proof structure according to claim 1, wherein: the base (1) is further provided with a pressure relief opening (12) communicated with the inflation cavity (41), and a pressure relief valve (121) is arranged in the pressure relief opening (12).
3. A vacuum pump having an explosion-proof structure according to claim 1, wherein: an exhaust pipe (341) is connected to the exhaust hole (34), one end of the exhaust pipe (341) is connected with the explosion-proof shell (3), and the other end of the exhaust pipe is bent and arranged downwards.
4. A vacuum pump having an explosion-proof structure according to claim 1, wherein: a plurality of air grooves (35) communicated with the explosion-proof cavity (31) are uniformly formed in the inner wall of the explosion-proof shell (3), and two adjacent air grooves (35) are communicated through a plurality of air channels (351).
5. A vacuum pump having an explosion-proof structure according to claim 1, wherein: and a supporting steel plate (36) is arranged in the explosion-proof shell (3).
6. A vacuum pump having an explosion-proof structure according to claim 1, wherein: the inflatable shell (4) is in sealing connection with the pump air inlet pipe (21) through a first connecting ring (5), and the inflatable shell (4) is in sealing connection with the pump air outlet pipe (22) through a second connecting ring (6).
7. A vacuum pump having an explosion-proof structure according to claim 6, wherein: the first connecting ring (5) can slide up and down along the height direction of the pump air inlet pipe (21), and the second connecting ring (6) can slide up and down along the height direction of the pump air outlet pipe (22).
8. A vacuum pump having an explosion-proof structure according to claim 1, wherein: and a flame-retardant layer is arranged in the explosion-proof shell (3).
9. A vacuum pump having an explosion-proof structure according to claim 1, wherein: an explosion-proof film is pasted and covered on the outer wall of the explosion-proof shell (3).
10. A vacuum pump having an explosion-proof structure according to claim 1, wherein: the inert gas is one of helium, argon and nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022273228.1U CN213511094U (en) | 2020-10-13 | 2020-10-13 | Vacuum pump with explosion-proof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022273228.1U CN213511094U (en) | 2020-10-13 | 2020-10-13 | Vacuum pump with explosion-proof structure |
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| Publication Number | Publication Date |
|---|---|
| CN213511094U true CN213511094U (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022273228.1U Active CN213511094U (en) | 2020-10-13 | 2020-10-13 | Vacuum pump with explosion-proof structure |
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| Country | Link |
|---|---|
| CN (1) | CN213511094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023118819A1 (en) * | 2021-12-23 | 2023-06-29 | Edwards Limited | Vacuum pump with reduced seal requirements |
-
2020
- 2020-10-13 CN CN202022273228.1U patent/CN213511094U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023118819A1 (en) * | 2021-12-23 | 2023-06-29 | Edwards Limited | Vacuum pump with reduced seal requirements |
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