CN210686222U - Vacuum system exhaust silencer and vacuum system - Google Patents
Vacuum system exhaust silencer and vacuum system Download PDFInfo
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- CN210686222U CN210686222U CN201921377201.8U CN201921377201U CN210686222U CN 210686222 U CN210686222 U CN 210686222U CN 201921377201 U CN201921377201 U CN 201921377201U CN 210686222 U CN210686222 U CN 210686222U
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Abstract
The utility model relates to a vacuum system exhaust silencing device and vacuum system, silencing device includes: the first baffle valve is arranged on the vacuum pipeline, and the inner diameter of the first baffle valve is the same as that of the vacuum pipeline; one end of the bypass pipeline is communicated with the vacuum pipeline at one side of the first baffle valve, the other end of the bypass pipeline is communicated with the vacuum pipeline at the other side of the first baffle valve, and the inner diameter of the bypass pipeline is 0.1-0.2 times of the inner diameter of the vacuum pipeline; the second baffle valve is arranged on the bypass pipeline, and the inner diameter of the second baffle valve is the same as that of the bypass pipeline; and the vacuumizing valve relay and the power-off delay time relay are connected in series, the vacuumizing valve relay is connected with the PLC, a normally closed contact of the time relay is connected with a control line of the first baffle valve, and a normally open contact of the time relay is connected with a control line of the second baffle valve. The utility model discloses a switch the air exhaust pipeline bore and reduce the air vibration, can effectively reduce the sharp-pointed noise that the evacuation produced in the twinkling of an eye.
Description
Technical Field
The utility model belongs to the technical field of the evacuation, a vacuum system evacuation technique is related to, and specifically speaking relates to a vacuum furnace vacuum system exhaust silencing device and vacuum system.
Background
The vacuum system provides a vacuum environment for equipment operating in a vacuum environment, such as a vacuum furnace. The vacuum system mainly comprises a vacuum pump and a vacuum pipeline, and the vacuum pump is connected with equipment to be vacuumized through the vacuum pipeline. Vacuum pump is as vacuum system's evacuating device, at vacuum system during operation, starts vacuum pump evacuation, and self function vibrations can produce the noise in the vacuum pump working process, and evacuation causes air friction in the twinkling of an eye simultaneously and can produce sharp-pointed noise, can't satisfy the workshop environment requirement, brings very big inconvenience for staff's work, and what more very, the high decibel noise of production can seriously harm staff's hearing and healthy.
At present, most of the noise reduction modes of adopting a vacuum pump set and additionally installing a vacuum noise reduction device (such as a silencer) to eliminate noise generated in the vacuumizing process mainly act on the continuous vacuumizing stage, and the noise generated by the operation of the vacuum pump can be eliminated by the mode, but the noise generated in the vacuumizing moment cannot be solved. Therefore, a reasonable vacuum system vacuumizing silencer and a vacuum system are needed to reduce the noise generated in the vacuumizing moment as much as possible, provide a good working environment for workers and be beneficial to the physical and psychological health of the workers.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to there being the problem that the evacuation produced the noise in the twinkling of an eye among the current vacuum system evacuation process, provide a vacuum system evacuation silencing device and vacuum system, can effectively reduce the sharp-pointed noise that the evacuation produced in the twinkling of an eye.
In order to achieve the above object, the utility model provides a vacuum system exhaust silencing device, include:
a first flapper valve mounted on the vacuum pipe, the first flapper valve having an inner diameter identical to an inner diameter of the vacuum pipe;
one end of the bypass pipeline is communicated with the vacuum pipeline on one side of the first baffle valve, the other end of the bypass pipeline is communicated with the vacuum pipeline on the other side of the first baffle valve, and the inner diameter of the bypass pipeline is 0.1-0.2 times of the inner diameter of the vacuum pipeline;
the second baffle valve is arranged on the bypass pipeline, and the inner diameter of the second baffle valve is the same as that of the bypass pipeline;
and the vacuumizing valve relay and the power-off delay time relay are connected in series, the vacuumizing valve relay is connected with the PLC, a normally closed contact of the time relay is connected with a control line of the first baffle valve, and a normally open contact of the time relay is connected with a control line of the second baffle valve.
Preferably, the vacuum pipelines on two sides of the first baffle valve are respectively provided with a bypass pipeline port with the same inner diameter as that of the bypass pipeline, one end of the bypass pipeline is connected with the first bypass pipeline port, and the other end of the bypass pipeline is connected with the second bypass pipeline port.
Preferably, two bypass pipeline mouths are flange mouths, and each bypass pipeline mouth and bypass pipeline butt joint department all are provided with sealing rubber ring and buckle.
Preferably, the time relay is provided with an LED light for indicating the operating state of the first flapper valve.
Furthermore, a knob for controlling the switching time of the first baffle valve and the second baffle valve is arranged on the time relay, and the knob is provided with a digital rotating disc.
In order to achieve the above object, the utility model also provides a vacuum system, including vacuum pump and one end with the vacuum pipe of vacuum pump intercommunication still includes above-mentioned vacuum system exhaust silencing device.
Further, still including locating the vacuum silencing device on the vacuum pump body, the vacuum silencing device that receives connect in the vacuum pump with between the vacuum pipe.
Preferably, the vacuum silencer is a vacuum silencer.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
(1) the utility model discloses vacuum system exhaust silencing device, simple structure is reasonable, and is with low costs, adopts flapper valve and bypass pipeline to and the time delay relay device of forming by evacuation valve relay and the time relay that is equipped with the outage time delay, through switching bleed-off pipeline bore reduction air vibration, the amortization noise reduction effect is obvious, can carry out effective amortization when standard atmospheric pressure condition evacuation, effectively reduces the sharp-pointed noise that the evacuation produced in the twinkling of an eye.
(2) The utility model discloses vacuum system is equipped with vacuum system exhaust silencing device, can effectively reduce the sharp-pointed noise that the evacuation produced in the twinkling of an eye.
(3) The utility model discloses vacuum system still is equipped with vacuum silencing device, can eliminate the noise that lasts evacuation stage vacuum pump self function and produce.
Drawings
FIG. 1 is a schematic structural view of a flapper valve and a bypass pipe of an exhaust silencer of a vacuum system according to an embodiment of the present invention;
FIG. 2 is an electrical control diagram of a flapper valve of an exhaust silencer of a vacuum system according to an embodiment of the present invention;
FIG. 3 is a pin diagram of a time relay according to an embodiment of the present invention;
fig. 4-5 are schematic structural diagrams of a vacuum pump in a vacuum system according to an embodiment of the present invention.
In the figure, 1, a vacuum pipeline, 2, a first baffle valve, 3, a bypass pipeline, 4, a second baffle valve, 5, a vacuumizing valve relay, 6, a time relay, 7, a first bypass pipeline port, 8, a second bypass pipeline port, 9, a vacuum pump, 10, a vacuum pump filter, 11, a vacuum pipeline port, 12, a nitrogen pipeline port, 13, a dry air pipeline port, 14, a vacuum pump air exhaust port, 15, a vacuum silencing device, 16 and a vacuum silencing device air exhaust port.
Detailed Description
The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", "front", "back", and the like indicate orientations or positional relationships based on positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 and 2, an embodiment of the present invention provides an exhaust silencer for a vacuum system, including:
a first flapper valve 2 installed on the vacuum pipe 1, the inner diameter of the first flapper valve 2 being the same as the inner diameter of the vacuum pipe 1;
one end of the bypass pipeline 3 is communicated with the vacuum pipeline 1 at one side of the first baffle valve 2, the other end of the bypass pipeline 3 is communicated with the vacuum pipeline 1 at the other side of the first baffle valve 2, and the inner diameter of the bypass pipeline 3 is 0.1-0.2 times of the inner diameter of the vacuum pipeline 1;
the second baffle valve 4 is arranged on the bypass pipeline 3, and the inner diameter of the second baffle valve 4 is the same as that of the bypass pipeline 3;
and the vacuumizing valve relay 5 and the power-off delay time relay 6 are connected in series, the vacuumizing valve relay 5 is connected with the PLC, a normally closed contact of the time relay 6 is connected with a control line of the first baffle valve 2, and a normally open contact of the time relay 6 is connected with a control line of the second baffle valve 4.
Specifically, the inner diameter of the bypass pipe may be 0.1 times, 0.12 times, 0.14 times, 0.15 times, 0.16 times, 0.18 times, 0.2 times, etc. of the inner diameter of the vacuum pipe, and may be specifically set according to actual requirements. For example: the inner diameter of the vacuum pipeline is equal to 100mm, and the inner diameter of the bypass pipeline is equal to 16 mm.
Specifically, as the time relay is an outage delay time relay, with reference to fig. 2 and fig. 3, pins 13 and 14 of the time relay are connected to DC24V, normally closed contacts 1 and 9 of the time relay are connected in series to the working circuit of the first flapper valve, normally open contacts 4 and 12 of the time relay are connected in series to the working circuit of the second flapper valve, and the time relay is connected in series to the vacuum pumping valve relay. Under the circumstances that the evacuation valve relay got the electricity, if time relay sets up outage delay time and is 10 seconds, then preceding 10 seconds time relay gets electricity, time relay's normally closed contact 1, 9 are opened, first flapper valve is out of work, time relay's normally open contact 4 simultaneously, 12 are closed, the second flapper valve is opened, begin to bleed for a short time through the bypass pipeline, after 10 seconds, time relay outage, time relay's normally open contact 4, 12 are opened, the second flapper valve is closed, time relay's normally closed contact 1 simultaneously, 9 are closed, first flapper valve is opened, begin to bleed greatly through the vacuum pipeline. When the air is pumped out for a short time, because the inner diameter of the bypass pipeline is small, the air friction caused when the standard atmospheric pressure is pumped out for vacuum is small, and therefore, the noise is small. When the small air suction is converted into the large air suction, the generated noise is smaller than the noise generated when the standard atmospheric pressure is used for vacuum pumping because the pressure difference between the vacuumized equipment and the vacuum pipeline is smaller.
With continued reference to fig. 1, the vacuum pipes 1 on both sides of the first flapper valve 2 are respectively provided with a bypass pipe port having the same inner diameter as that of the bypass pipe 3, one end of the bypass pipe 3 is connected to the first bypass pipe port 7, and the other end is connected to the second bypass pipe port 8.
Specifically, in order to facilitate the connection of the bypass pipe and the vacuum pipe, as a preferred embodiment, the two bypass pipe ports are flange ports, and a sealing rubber ring and a buckle are arranged at the butt joint of each bypass pipe port and the bypass pipe. The sealing of the butt joint of the bypass pipeline port and the bypass pipeline is realized through the sealing rubber ring, and the butt joint of the bypass pipeline port and the bypass pipeline is locked through the buckle.
In particular, in a preferred embodiment of the above silencing device, the time relay is provided with an LED light for indicating the operating state of the first flapper valve. The working state of the first baffle valve can be clearly displayed through the turning-on and turning-off of the LED lamp, if the LED lamp is turned on, the first baffle valve is opened, the large air suction is started through the vacuum pipeline, if the LED lamp is turned off, the first baffle valve is closed, the second baffle valve is opened, and the small air suction is started through the bypass pipeline.
Specifically, in a preferred embodiment of the above noise reduction device, the time relay is provided with a knob for controlling the switching time of the switches of the first flapper valve and the second flapper valve, and the knob is provided with a digital rotary table. The switch switching time of the first baffle valve and the second baffle valve is controlled through the knob, and the time relay can be accurately adjusted to work through the digital rotating disc.
The above embodiment vacuum system exhaust silencing device, simple structure is reasonable, and is with low costs, reduces the air vibration when can the evacuation under standard atmospheric pressure condition, effectively reduces the sharp-pointed noise that the evacuation produced in the twinkling of an eye, and noise cancelling effect is obvious, improves vacuum apparatus's such as vacuum furnace noise pollution greatly, improves staff's operational environment.
With continuing reference to fig. 1 and with reference to fig. 4, another embodiment of the present invention provides a vacuum system, which includes a vacuum pump 9 and a vacuum pipeline 1 having one end connected to the vacuum pump 9, wherein a vacuum pump filter 10 connected to the vacuum pump 9 is disposed on one side of the vacuum pump 9, and the vacuum system further includes the vacuum system exhaust silencer according to the above embodiment. Specifically, a vacuum pipe port 11 at one end of the vacuum pipe 1 is connected to a vacuum suction port 12 of the vacuum pump 9.
With continued reference to fig. 1, the vacuum pipeline 1 is further provided with a nitrogen pipeline port 13 connected with the nitrogen pipeline and a dry air pipeline port 14 connected with the dry air pipeline.
This embodiment vacuum system is equipped with vacuum system exhaust silencing device, when carrying out the evacuation, effectively reduces the sharp-pointed noise that the evacuation produced in the twinkling of an eye, improves vacuum apparatus's such as vacuum furnace noise pollution greatly, improves staff's operational environment.
With continuing reference to fig. 1 and with reference to fig. 5, in another embodiment of the present invention, a vacuum system is provided, which includes a vacuum pump 9 and a vacuum pipeline 1 having one end connected to the vacuum pump 9, a vacuum pump filter 10 connected to the vacuum pump 9 is disposed on one side of the vacuum pump 9, and the vacuum system further includes the above-mentioned embodiment, an exhaust silencer of the vacuum system and a vacuum silencer 15 disposed on the body of the vacuum pump, wherein the vacuum silencer 15 is connected between the vacuum pump 9 and the vacuum pipeline 1. Specifically, with continued reference to fig. 5, a vacuum muffler 15 is connected to the vacuum suction port 12 of the vacuum pump 9, and a suction pipe port 16 of the vacuum muffler is connected to the vacuum pipe port 11 at one end of the vacuum pipe 1.
With continued reference to fig. 1, the vacuum pipeline 1 is further provided with a nitrogen pipeline port 13 connected with the nitrogen pipeline and a dry air pipeline port 14 connected with the dry air pipeline.
In particular, as a preferred embodiment, the vacuum silencer device is a vacuum silencer.
This embodiment vacuum system is equipped with vacuum system exhaust silencing device, when carrying out the evacuation, effectively reduces the sharp-pointed noise that the evacuation produced in the twinkling of an eye, still is equipped with vacuum silencing device, can be in lasting evacuation stage, eliminates the noise that vacuum pump self function produced, and the effect of noise abatement is more obvious, improves vacuum furnace and other vacuum equipment's noise pollution greatly, improves staff's operational environment.
The above-mentioned embodiments are provided for explaining the present invention, and not for limiting the present invention, and any modifications and changes made by the present invention are within the spirit and scope of the claims of the present invention.
Claims (8)
1. A vacuum system exhaust silencer assembly, comprising:
a first flapper valve mounted on the vacuum pipe, the first flapper valve having an inner diameter identical to an inner diameter of the vacuum pipe;
one end of the bypass pipeline is communicated with the vacuum pipeline on one side of the first baffle valve, the other end of the bypass pipeline is communicated with the vacuum pipeline on the other side of the first baffle valve, and the inner diameter of the bypass pipeline is 0.1-0.2 times of the inner diameter of the vacuum pipeline;
the second baffle valve is arranged on the bypass pipeline, and the inner diameter of the second baffle valve is the same as that of the bypass pipeline;
the vacuumizing valve relay is connected with the PLC, a normally closed contact of the time relay is connected with a control line of the first baffle valve, a normally open contact of the time relay is connected with a control line of the second baffle valve, and the time relay is set to be power-off time-delay.
2. The vacuum system exhaust silencer according to claim 1, wherein the vacuum pipe on both sides of the first flapper valve has a bypass pipe port having an inner diameter equal to an inner diameter of the bypass pipe, and one end of the bypass pipe is connected to the first bypass pipe port and the other end is connected to the second bypass pipe port.
3. The vacuum system exhaust silencer according to claim 1 or 2, wherein both of the bypass pipe ports are flange ports, and a sealing rubber ring and a buckle are arranged at the joint of each bypass pipe port and the bypass pipe.
4. The vacuum system exhaust silencer assembly of claim 1, wherein said time relay is provided with an LED light for indicating the operational status of the first flapper valve.
5. The vacuum system exhaust silencer according to claim 1, wherein said time relay is provided with a knob for controlling the switching time of the first flapper valve and the second flapper valve, said knob being provided with a digital dial.
6. A vacuum system comprising a vacuum pump and a vacuum pipe having one end communicating with the vacuum pump, characterized by further comprising the vacuum system exhaust silencer according to any one of claims 1 to 3.
7. The vacuum system of claim 6, further comprising a vacuum silencer on the pump body of the vacuum pump, the vacuum silencer being connected between the vacuum pump and the vacuum conduit.
8. The vacuum system of claim 7, wherein the vacuum silencer device is a vacuum silencer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921377201.8U CN210686222U (en) | 2019-08-22 | 2019-08-22 | Vacuum system exhaust silencer and vacuum system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921377201.8U CN210686222U (en) | 2019-08-22 | 2019-08-22 | Vacuum system exhaust silencer and vacuum system |
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| Publication Number | Publication Date |
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| CN210686222U true CN210686222U (en) | 2020-06-05 |
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| CN201921377201.8U Active CN210686222U (en) | 2019-08-22 | 2019-08-22 | Vacuum system exhaust silencer and vacuum system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345047A (en) * | 2019-08-22 | 2019-10-18 | 中车青岛四方车辆研究所有限公司 | Vacuum system exhaust noise silencing method, silencing means and vacuum system |
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2019
- 2019-08-22 CN CN201921377201.8U patent/CN210686222U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345047A (en) * | 2019-08-22 | 2019-10-18 | 中车青岛四方车辆研究所有限公司 | Vacuum system exhaust noise silencing method, silencing means and vacuum system |
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