CN214618034U - Gas flow restrictor used in negative pressure state - Google Patents
Gas flow restrictor used in negative pressure state Download PDFInfo
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- CN214618034U CN214618034U CN202120700678.6U CN202120700678U CN214618034U CN 214618034 U CN214618034 U CN 214618034U CN 202120700678 U CN202120700678 U CN 202120700678U CN 214618034 U CN214618034 U CN 214618034U
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- upper cover
- negative pressure
- groove
- orifice plate
- pore plate
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Abstract
The utility model discloses a gas current limiter used in negative pressure state, which comprises a pore plate lower cover, a pore plate upper cover and a worm, wherein the edge parts of the pore plate lower cover and the pore plate upper cover are respectively provided with a mounting groove, the inside of the pore plate lower cover is provided with a fixing groove, and the inner side of the fixing groove is provided with an O-shaped gasket for improving the sealing property; a sleeve is sleeved on the outer side of the pore plate upper cover, an adjusting rod penetrates through the side wall of the sleeve, a worm is sleeved on the outer side of the adjusting rod, a ferrule is movably arranged on the pore plate upper cover on the side of the worm, and a tooth block is fixed on the outer wall of the ferrule; the side of the pore plate upper cover is provided with a through groove for the movement of the connecting rod, and the connecting rod penetrates through the inside of the through groove. This a gas current limiter for under negative pressure state to under the negative pressure state, can be quick, stable realization flow's control to can realize restricting the different flow of gas according to the current-limiting demand of difference, promote gas current limiter's practicality.
Description
Technical Field
The utility model relates to a gas current limiter technical field specifically is a gas current limiter for under the negative pressure state.
Background
In order to limit the flow of gas in the circulation process, a damping tube mode conventionally adopted by the gas flow limitation of the current environmental protection industry is generally required to be used for realizing the flow control under a positive pressure or negative pressure state by using a current limiter, for example, an adjustable microporous structure gas current limiter with the publication number of CN210424149U, a main cylinder of the current limiter is of a hollow structure, a microporous core and a gland are positioned in the main cylinder of the current limiter, and the end part of a first standard threaded pipe joint is inserted into a free sealing end … of the main cylinder of the current limiter. However, the adjustable microporous structure gas flow restrictor still has the following disadvantages in the practical use process:
the traditional flow restrictor cannot stably limit the flow of gas in a negative pressure state, and the traditional gas flow restrictor only can limit the flow of gas with the same flow and cannot limit the flow of gas with different flows according to different use requirements, so that the traditional flow restrictor has certain limitation. In order to solve the above problems, innovative design based on the original gas flow restrictor is urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a gas current limiter for under the negative pressure state to solve above-mentioned background art and propose traditional current limiter and to the current-limiting of gas under the negative pressure state stable inadequately, and traditional gas current limiter only can realize carrying out the current-limiting to the gas of same flow, can't carry out the gaseous current-limiting of different flows according to the user demand of difference, consequently has the problem of certain limitation.
In order to achieve the above object, the utility model provides a following technical scheme: a gas current limiter used in a negative pressure state comprises an orifice plate lower cover, an orifice plate upper cover and a worm, wherein mounting grooves are formed in the edges of the orifice plate lower cover and the orifice plate upper cover, locking bolts are arranged on the inner threads of the mounting grooves, the orifice plate lower cover and the orifice plate upper cover are assembled through the locking bolts, a fixing groove is formed in the orifice plate lower cover, and an O-shaped gasket for improving the sealing performance is arranged on the inner side of the fixing groove;
a sleeve is sleeved on the outer side of the pore plate upper cover, an adjusting rod penetrates through the side wall of the sleeve, a worm is sleeved on the outer side of the adjusting rod, a ferrule is movably arranged on the pore plate upper cover on the side of the worm, and a tooth block is fixed on the outer wall of the ferrule;
the side of the pore plate upper cover is provided with a through groove for the movement of the connecting rod, the connecting rod penetrates through the inside of the through groove, and a baffle is fixed on the outer side of the connecting rod.
Preferably, an orifice plate current limiter is tightly arranged between 2O-shaped gaskets, and the surface of the orifice plate current limiter limits the orifice, so that the orifice plate current limiter can be stably installed.
Preferably, the intermediate position of connecting rod and the one end fixed connection of guide pole, and the other end of guide pole is connected with the limiting plate to the rotation of limiting plate is adjusted the restricted aperture opening size.
Preferably, the limiting plate is of a fan-shaped structure, the limiting plate and the orifice plate current limiter are in sliding connection in a fit mode, the limiting plate is in fit with the orifice plate current limiter when rotating, and air leakage in gaps is prevented.
Preferably, the connecting rod constitutes sliding construction through leading to groove and orifice plate upper cover, and the slip angle of connecting rod equals the radian that leads to the groove, can restrict the turned angle of connecting rod through leading to the groove.
Preferably, the cross-section of baffle is the arc, and its arc length is greater than the arc length that leads to the groove to the baffle sets up with the inner wall laminating of orifice plate upper cover, can drive the baffle all the time and shelter from leading to the groove when the connecting rod rotates like this, prevents that gas from spilling.
Preferably, the tooth blocks are distributed on the ferrule at equal angles, the tooth blocks are in meshed connection with the worm, the ferrule and the upper cover of the pore plate form a rotating structure, and the rotation of the worm can drive the ferrule to rotate through the tooth blocks.
Compared with the prior art, the beneficial effects of the utility model are that: the gas flow restrictor used in the negative pressure state can quickly and stably realize flow control in the negative pressure state, can realize the restriction on different flows of gas according to different flow limiting requirements, and improves the practicability of the gas flow restrictor;
1. the orifice plate current limiter is tightly arranged between the lower plate of the orifice cover and the upper plate of the orifice cover through an O-shaped gasket, and can stably limit the flow of gas through the flow limiting hole in the middle of the orifice plate under the state of certain negative pressure (more than 20 KPa), and the lower plate of the orifice cover and the upper plate of the orifice cover are conveniently and quickly disassembled;
2. adjust the pole and rotate the time through the meshing between worm and the tooth piece, can drive the lasso rotatory in the orifice plate lower cover outside, the transmission through connecting rod and guide rod can drive the limiting plate and rotate like this, shelter from the area in restricted aperture through the limiting plate, adjust the size of gas flow restriction, so that this current limiter adjusts according to the in-service use demand, and the connecting rod drives the laminating between baffle and the logical groove when rotating, can avoid the condition of gas leakage.
Drawings
Fig. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1 according to the present invention;
FIG. 3 is a schematic perspective view of the orifice plate current limiter of the present invention;
FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 2 according to the present invention;
fig. 5 is a schematic cross-sectional view taken along line C-C of fig. 4 according to the present invention.
In the figure: 1. a lower cover of the orifice plate; 2. mounting grooves; 3. locking the bolt; 4. an upper cover of the orifice plate; 5. fixing grooves; 6. an O-shaped gasket; 7. an orifice plate flow restrictor; 71. a flow restriction orifice; 8. a limiting plate; 9. a guide rod; 10. a connecting rod; 11. a baffle plate; 12. a through groove; 13. a ferrule; 14. a tooth block; 15. a worm; 16. adjusting a rod; 17. a sleeve.
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. 1-5, the present invention provides a technical solution: a gas current limiter used in a negative pressure state comprises a lower orifice plate cover 1, a mounting groove 2, a locking bolt 3, an upper orifice plate cover 4, a mounting groove 5, an O-shaped gasket 6, an orifice plate current limiter 7, a limiting hole 71, a limiting plate 8, a guide rod 9, a connecting rod 10, a baffle plate 11, a through groove 12, a ferrule 13, a tooth block 14, a worm 15, an adjusting rod 16 and a sleeve 17, wherein the mounting groove 2 is formed in the edges of the lower orifice plate cover 1 and the upper orifice plate cover 4, the locking bolt 3 is arranged on the inner thread of the mounting groove 2, the lower orifice plate cover 1 and the upper orifice plate cover 4 are assembled through the locking bolt 3, the mounting groove 5 is formed in the lower orifice plate cover 1, and the O-shaped gasket 6 for improving the sealing performance is arranged on the inner side of the mounting groove 5;
a sleeve 17 is sleeved on the outer side of the pore plate upper cover 4, an adjusting rod 16 penetrates through the side wall of the sleeve 17, a worm 15 is sleeved on the outer side of the adjusting rod 16, a ferrule 13 is movably arranged on the pore plate upper cover 4 on the side of the worm 15, and a tooth block 14 is fixed on the outer wall of the ferrule 13;
a through groove 12 for the connecting rod 10 to move is formed in the side surface of the pore plate upper cover 4, the connecting rod 10 penetrates through the through groove 12, and a baffle plate 11 is fixed on the outer side of the connecting rod 10;
the orifice plate current limiter 7 is tightly arranged between the 2O-shaped gaskets 6, and the surface flow limiting hole 71 of the orifice plate current limiter 7 can realize the tight installation of the orifice plate current limiter 7 through the 2O-shaped gaskets 6;
the middle position of the connecting rod 10 is fixedly connected with one end of the guide rod 9, and the other end of the guide rod 9 is connected with the limiting plate 8; the limiting plate 8 is of a fan-shaped structure, and the limiting plate 8 is in fit sliding connection with the orifice plate current limiter 7; the connecting rod 10 forms a sliding structure with the pore plate upper cover 4 through the through groove 12, and the sliding angle of the connecting rod 10 is equal to the radian of the through groove 12; the section of the baffle 11 is arc-shaped, the arc length of the baffle is greater than that of the through groove 12, and the baffle 11 is attached to the inner wall of the pore plate upper cover 4; the tooth blocks 14 are distributed on the ferrule 13 at equal angles, the tooth blocks 14 are meshed with the worm 15, the ferrule 13 and the orifice plate upper cover 4 form a rotating structure, as shown in fig. 2-5, under a certain negative pressure state (above 20 KPa), the flow limitation of gas can be realized through the flow limiting holes 71 arranged on the orifice plate flow restrictor 7, then when the flow limitation amount needs to be adjusted, the adjusting rod 16 is rotated to drive the worm 15 to synchronously rotate, the ferrule 13 can be driven to rotate through the meshing between the worm 15 and the tooth blocks 14, the connecting rod 10 is driven to slide in the through groove 12, the limiting plate 8 is driven to rotate through the guide rod 9, after the limiting plate 8 rotates to different angles, the opening size of the flow limiting holes 71 can be adjusted, the limitation of different flow rates can be realized, when the connecting rod 10 slides in the through groove 12, the baffle 11 can be always driven to block the through groove 12, avoiding the condition of gas leakage.
The working principle is as follows: firstly, as shown in fig. 1-5, an O-shaped gasket 6 is installed in a fixing groove 5 in an orifice plate lower cover 1, then an orifice plate current limiter 7 is connected with the O-shaped gasket 6, and finally a locking bolt 3 penetrates through 2 sets of installation grooves 2, so that stable installation between the orifice plate lower cover 1 and the orifice plate upper cover 4 is realized, and gas current limitation is realized through the orifice plate current limiter 7.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. A gas current limiter for under negative pressure state, includes orifice plate lower cover, orifice plate upper cover and worm, its characterized in that: mounting grooves are formed in the edges of the lower cover and the upper cover of the pore plate, locking bolts are arranged on the inner threads of the mounting grooves, the lower cover and the upper cover of the pore plate are assembled through the locking bolts, a fixing groove is formed in the lower cover of the pore plate, and an O-shaped gasket for improving the sealing property is arranged on the inner side of the fixing groove;
a sleeve is sleeved on the outer side of the pore plate upper cover, an adjusting rod penetrates through the side wall of the sleeve, a worm is sleeved on the outer side of the adjusting rod, a ferrule is movably arranged on the pore plate upper cover on the side of the worm, and a tooth block is fixed on the outer wall of the ferrule;
the side of the pore plate upper cover is provided with a through groove for the movement of the connecting rod, the connecting rod penetrates through the inside of the through groove, and a baffle is fixed on the outer side of the connecting rod.
2. A gas restrictor according to claim 1 for use under negative pressure conditions, wherein: and an orifice plate current limiter is tightly arranged between 2O-shaped gaskets, and the surface of the orifice plate current limiter limits the flow holes.
3. A gas restrictor according to claim 1 for use under negative pressure conditions, wherein: the intermediate position of connecting rod and the one end fixed connection of guide bar, and the other end of guide bar is connected with the limiting plate.
4. A gas restrictor according to claim 3 for use under negative pressure conditions, wherein: the limiting plate is of a fan-shaped structure, and the limiting plate is in sliding connection with the orifice plate current limiter in an attached mode.
5. A gas restrictor according to claim 1 for use under negative pressure conditions, wherein: the connecting rod passes through logical groove and orifice plate upper cover constitution sliding structure, and the slip angle of connecting rod equals the radian that leads to the groove.
6. A gas restrictor according to claim 1 for use under negative pressure conditions, wherein: the cross-section of baffle is the arc, and its arc length is greater than the arc length that leads to the groove to the baffle sets up with the inner wall laminating of orifice plate upper cover.
7. A gas restrictor according to claim 1 for use under negative pressure conditions, wherein: the tooth blocks are distributed on the ferrule at equal angles, the tooth blocks are in meshed connection with the worm, and the ferrule and the upper cover of the orifice plate form a rotating structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120700678.6U CN214618034U (en) | 2021-04-07 | 2021-04-07 | Gas flow restrictor used in negative pressure state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120700678.6U CN214618034U (en) | 2021-04-07 | 2021-04-07 | Gas flow restrictor used in negative pressure state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214618034U true CN214618034U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120700678.6U Active CN214618034U (en) | 2021-04-07 | 2021-04-07 | Gas flow restrictor used in negative pressure state |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214618034U (en) |
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2021
- 2021-04-07 CN CN202120700678.6U patent/CN214618034U/en active Active
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