TWI778929B - A double filter system which can change the filter without shutting down - Google Patents

Abstract

The Double Filter System which can Change the Filter Without Shutting Down is in the plastic processor, including a force washing system, at least two filtration systems and at least one dry vacuum pump; the force washing system has a filtering device, at least one vacuum gage and a scrap department, there is a conveying section at the bottom of the filtering device that breakthrough it, inside the filtering device are filtration part A, the first flow channel, the scrap flow channel and the return flow channel; the scrap flow channel and the return flow channel are connected with the filtering device and the scrap department, and there is a door in the scrap flow channel, there are also three T-valve A in the return flow channel; there are filtration part B, the second flow channel and the third flow channel, there is at least one vacuum gage on the outside; there are exhaust end and the forth flow channel in the dry vacuum pump.

Description

Double filter screen replacement system without downtime

The present invention relates to a filtering system, in particular to a double-filtering screen changing system without downtime.

After recycling the plastic waste in the garbage, a considerable amount of impurities are usually mixed on the surface of the plastic waste, such as stickers used to indicate the content of the product, or uneaten food residues. Therefore, when the plastic waste recycling device is used to recycle the plastic waste, it is necessary to use the filter device to filter out the impurities in the plastic waste first, and at the same time to separate out the recyclable part, so that the subsequent recycling process can be carried out.

However, when using the existing plastic waste recycling device, after a long-term filtering process, the filtered impurities will gradually fill the filter screen in the filtering device, and the exhaust gas generated during the process will be directly discharged. Therefore, , these impurities and gases are likely to cause secondary pollution to the environment, and reduce the purpose and efficiency of recycling.

In addition, when the filter device is fully loaded, the entire plastic waste recycling device needs to be shut down before it can be replaced, which also results in a long operation time and low stability of the recycling process.

In view of this, how to improve the above problems is a problem that the current industry leaders hope to solve.

Aiming at the deficiencies of the prior art, the purpose of the double filter screen replacement system without downtime of the present invention is to improve the production process of the traditional technology for processing plastic waste, and it can purify the waste gas discharged from the process of processing plastic waste, so as to recover and improve the existing technology. , Reduce exhaust emissions, improve operational efficiency and create a friendly environment and a sustainable future.

In addition, the filter device can also be replaced at the same time during the operation of the double filter screen free-stop screen replacement system of the present invention, and the replacement can be performed without stopping the machine, which further improves the operation efficiency.

In order to achieve the above-mentioned purpose, the double filter screen free-stop screen replacement system of the present invention, which is located in a plastic processing machine, includes: a high-pressure auxiliary cleaning system, at least two filter systems and at least one dry vacuum pump; the high-pressure auxiliary cleaning system is provided with A filter device, at least one vacuum gauge and a waste part, the lower end of the filter device is provided with a conveying part passing through the filter device, and the filter device is internally provided with a filter part A, a first flow channel, a waste flow channel and a return channel; The waste flow and the return passage are connected to the filter device and the waste portion, and a gate is arranged at a suitable position in the waste flow passage, and a three-way T-valve A is arranged at an appropriate position in the return passage; the filter system is provided with a filter Part B, the second flow channel and the third flow channel, at least one vacuum gauge is arranged on the outside; the dry vacuum pump is provided with an exhaust end and a fourth flow channel; wherein, the first flow channel of the filter device is made of a three-way T-shaped Valve B is tapped to the second flow channel of the filtration system, and the dry vacuum pump is tapped to the third flow channel of the filtration system through a three-way T-valve C.

In order to achieve the above-mentioned purpose, the double filter screen free-stop screen replacement system of the present invention, wherein the filter device of the high-pressure auxiliary cleaning system is a barrel structure, and an upper cover is provided above the filter device shell, and the filter device is provided with a partition. plate with tapered openings where appropriate.

In order to achieve the above-mentioned purpose, in the double filter screen free-stop screen changing system of the present invention, the conveying part of the high-pressure auxiliary cleaning system is a screw device, and the rear end of the screw device is provided with a deceleration motor.

In order to achieve the above-mentioned purpose, in the double filter screen replacement system without downtime of the present invention, the waste part of the high-pressure auxiliary cleaning system is a barrel structure, and a discharge switch is appropriately arranged at the lower end of the waste part.

In order to achieve the above-mentioned purpose, in the double filter screen free-stop screen replacement system of the present invention, the filter part A of the high-pressure auxiliary cleaning system is a filter screen, the number of which is plural and arranged in a ring.

In order to achieve the above-mentioned purpose, the double filter screen free-stop screen replacement system of the present invention, wherein the filter system is a filter box, and the filter part B inside the filter system is a filter screen, the number of which is plural and arranged in layers.

In order to achieve the above-mentioned purpose, the double filter screen of the present invention is provided with a non-stop screen replacement system, wherein the filter screen has gaps of different thicknesses and sizes.

In order to achieve the above-mentioned purpose, in the double filter screen free-stop screen replacement system of the present invention, the gate in the waste flow channel is a ball valve gate.

In order to achieve the above-mentioned purpose, the double filter screen free-stop screen replacement system of the present invention further comprises the following steps:

(a). Turn on the dry vacuum pump to form a vacuum state for the double filter screen replacement system without downtime;

(b). The plastic enters the filter device through the screw device. At this time, the waste on the plastic will fall into the waste part, and the gas generated during the process will be sucked into the filter part A for the first filtration.

(c). The gas filtered for the first time enters the filter system for the second filter;

(d). The gas for the second filtration enters the dry vacuum pump and is discharged;

(e). Pay attention to the vacuum gauge at any time during the process to ensure that the double filter screen replacement system without downtime maintains the vacuum state.

(f). When the filter system needs to be replaced, use the three-way T-valve B and the three-way T-valve C to close the filter system to be replaced, so that the filter part B of the filter system can be operated and replaced at the same time.

(g). After the operation is completed, close the gate of the high-pressure auxiliary cleaning system and the three-way T-valve A to separate the filter device and the waste part, and introduce the external air into the waste part, and turn on the discharge switch. At this time, the waste can be discharged. The waste in the part is discharged from the discharge switch.

Please refer to the first figure to the eighth figure, the double filter screen free-stop screen replacement system of the present invention, which is located in the plastic processing machine, includes: a strong pressure auxiliary cleaning system 1, at least two filter systems 2 and at least one dry vacuum pump 3 The high-pressure auxiliary cleaning system 1 is provided with a filter device 10, at least one vacuum gauge 11 and a waste portion 12. The lower end of the filter device 10 is provided with a conveying portion 100 running through the filter device 10, and the filter device 10 is internally provided with There is a filter part A101, a first flow channel 102, a waste flow channel 103 and a return channel 104; the waste flow channel 103 and the return channel 104 are connected to the above-mentioned filter device 10 and the above-mentioned waste part 12, and are located in the waste flow channel 103 at appropriate places A gate 1031 is provided, and a three-way T-valve A1041 is provided in the return channel 104; the filter system 2 is provided with a filter part B200, a second flow channel 201 and a third flow channel 202 inside, and at least one vacuum gauge is provided outside. 21; The dry vacuum pump 3 is provided with an exhaust end and a fourth flow channel 301; wherein, the first flow channel 102 of the filter device 10 is tapped to the second flow channel of the filter system through a three-way T-valve B40, the The dry vacuum pump is tapped to the third flow channel 202 of the filter system 2 through a three-way T-valve C50.

On top of that, the filter device 10 of the high-pressure auxiliary cleaning system 1 is a barrel structure, and an upper cover 105 is arranged above the outer shell of the filter device 10, and a partition plate 106 is arranged inside the filter device 10, and the partition plate 106 is appropriately provided with Conical opening; the conveying part 100 is a screw device, and the end of the screw device is provided with a deceleration motor 1001; the waste part 12 is a barrel structure, and the lower end of the waste part 12 is appropriately provided with a discharge switch 121; filter part A101 It is a filter screen, the number of which is plural and arranged in a ring shape, and the filter screen has gaps of different thicknesses and sizes; the gate 1031 in the waste flow channel 103 is a ball valve gate.

The filter system 2 is a filter box, and the filter part B200 inside the filter system 2 is a filter screen, the number of which is plural and arranged in layers, and the filter screen has gaps of different thicknesses and sizes.

In addition, the non-stop screen replacement system for double filters of the present invention further comprises the following steps:

(a). Turn on the dry vacuum pump to form a vacuum state for the double filter screen replacement system without downtime;

(b). The plastic enters the filter device through the screw device. At this time, the waste on the plastic will fall into the waste part, and the gas generated during the process will be sucked into the filter part A for the first filtration.

(c). The gas filtered for the first time enters the filter system for the second filter;

(d). The gas for the second filtration enters the dry vacuum pump and is discharged;

(e). Pay attention to the vacuum gauge at any time during the process to ensure that the double filter screen replacement system without downtime maintains the vacuum state.

(f). When the filter system needs to be replaced, use the three-way T-valve B and the three-way T-valve C to close the filter system to be replaced, so that the filter part B of the filter system can be operated and replaced at the same time.

(g). After the operation is completed, close the gate of the high-pressure auxiliary cleaning system and the three-way T-valve A to separate the filter device and the waste part, and introduce the external air into the waste part, and turn on the discharge switch. At this time, the waste can be discharged. The waste in the part is discharged from the discharge switch.

However, in the system of the present invention, the dry vacuum pump 3 will be turned on first, and the whole system will be in a vacuum state. Table 21 confirms, and then the plastic enters the filter device 10 from the conveying part 100. At this time, because the conveying part 100 is a screw device, the crystalline material on the plastic will be volatilized during the conveying, and the deceleration motor 1001 of the screw device will The speed is automatically adjusted as the plastic enters.

As mentioned above, when the plastic enters the filter device 10, the waste material will enter the waste material portion 12 from the waste flow channel 103 of the filter device 10, and the gas will be sucked into the filter device through the conical opening in the filter device 10 due to the vacuum suction effect. The filter part A101 in 10 performs the first filtration, and the filtered gas will flow into the first flow channel 102 of the filter device 10. In addition, part of the gas that enters the waste part with the waste will also pass through the filter device 10. The return channel 104 is returned to the filter device 10 and the above process is carried out.

Next, the gas entering the first flow channel will be split through the three-way T-shaped valve B40, and then enter the second flow channel 201 of the filter system 2 and then enter the filter system 2. At this time, the filter part B200 of the filter system 2 will perform the second time. After filtering, the filtered gas will flow into the third channel 202 of the filter system 2, and enter the fourth channel 301 of the dry vacuum pump 3 through the three-way T-valve C50, and then enter the dry vacuum pump 3, and finally the dry vacuum pump 3 is discharged from the exhaust end.

And because there are two filtration systems 2, the filtration speed will be further improved, and when one of them needs to be replaced, there is no need to close the machine, just connect the three-way T-valve B40 and the three-way T-valve C50 to the Part of the filter system 2 to be replaced is closed, and the second flow channel 201 and the third flow channel 202 of the filter system 2 to be replaced will not have gas inflow and outflow, and the other filter system 2 that is not closed can be replaced. It is still possible to maintain a vacuum and continue to operate, improving the lack of conventional technology.

When the recovery operation is completed, close the gate 1031 and the three-way T-shaped valve A1041 of the high-pressure auxiliary cleaning system 1. At this time, the waste flow passage 103 and the return passage 104 are blocked by the gate 1031 and the three-way T-shaped valve A1041. The filter device 10 and the waste part 12 are separated, and at this time, the external air can be introduced through the three-way T-valve A1041 to release the original vacuum state, and the external air will flow into the waste part 12 through the return channel 104, and the discharge switch is turned on at the same time. 121, the waste in the waste part 12 can be discharged from the discharge switch 121 to achieve the effect of cleaning.

The above description is exemplary only, not limiting. Any equivalent modifications or changes that do not depart from the spirit and scope of this creation should be included in the scope of the appended patent application.

1: Strong pressure auxiliary cleaning system

10: Filter device

100: Conveying Department

1001: Geared Motor

101: Filter A

102: First runner

103: Waste runner

1031: Gate

104: Return channel

1041: Three-way T-valve A

105: upper cover

106: Partition

11: Vacuum table

12: Scrap Department

121: Discharge switch

2: Filtration system

200: Filter B

201: Second runner

202: Third runner

21: Vacuum table

3: Dry vacuum pump

301: Fourth runner

40: Three-way T-valve B

50: Three-way T-valve C

The first figure is a schematic diagram 1 of the double filter screen free-stop screen replacement system of the present invention;

The second figure is a schematic diagram 2 of the double filter screen free-stop screen replacement system of the present invention;

The third figure is an exploded view of the filter device of the double filter screen free-stop screen replacement system of the present invention;

The fourth figure is a schematic diagram 1 of the actual operation of the double-filter no-stop screen replacement system of the present invention;

The fifth figure is a schematic diagram 2 of the actual operation of the double filter screen free-stop screen replacement system of the present invention;

The sixth figure is a schematic diagram 3 of the actual operation of the double filter screen free-stop screen replacement system of the present invention;

The seventh figure is a schematic diagram 4 of the actual operation of the double filter screen free-stop screen replacement system of the present invention;

The eighth figure is a step diagram of the double filter screen replacement system without downtime according to the present invention.

1: Strong pressure auxiliary cleaning system

10: Filter device

100: Conveying Department

1001: Geared Motor

101: Filter A

102: First runner

103: Waste runner

1031: Gate

104: Return channel

1041: Three-way T-valve A

105: upper cover

106: Partition

11: Vacuum table

12: Scrap Department

121: Discharge switch

2: Filtration system

200: Filter B

201: Second runner

202: Third runner

21: Vacuum table

3: Dry vacuum pump

301: Fourth runner

40: Three-way T-valve B

50: Three-way T-valve C

Claims (9)

A double filter screen no-stop screen replacement system, which is located in a plastic processing machine, includes: a high-pressure auxiliary cleaning system, at least two filter systems and at least one dry vacuum pump; the high-pressure auxiliary cleaning system is provided with a filter device, at least one vacuum watch and a waste part, the lower end of the filter device is provided with a conveying part passing through the filter device, and the filter device is provided with a filter part A, a first flow channel, a waste flow channel and a return channel; the waste flow channel and the return channel A channel is connected to the above-mentioned filtering device and the above-mentioned waste part, and a gate is arranged at a suitable place in the waste flow channel, and a three-way T-type valve A is arranged at an appropriate place in the return channel; the filter system is provided with a filter part B, a second flow There is at least one vacuum gauge on the outside; the dry vacuum pump is provided with an exhaust end and a fourth flow channel; wherein, the first flow channel of the filter device is tapped to the The second flow channel of the filter system, the dry vacuum pump is tapped to the third flow channel of the filter system through a three-way T-valve C. The non-stop screen replacement system for dual filters as claimed in claim 1, wherein the filter device of the high-pressure auxiliary cleaning system is a barrel structure, and a cover is arranged above the filter device shell, and a partition plate is arranged inside the filter device , the diaphragm is appropriately provided with a conical opening. The double filter screen free-stop screen changing system as claimed in claim 1, wherein the conveying part of the high-pressure auxiliary cleaning system is a screw device, and the rear end of the screw device is provided with a deceleration motor. The non-stop screen changing system for dual filters as claimed in claim 1, wherein the waste part of the high-pressure auxiliary cleaning system is a barrel structure, and a discharge switch is appropriately provided at the lower end of the waste part. The system for free-stop screen replacement for dual filters according to claim 1, wherein the filter part A of the high-pressure auxiliary cleaning system is a filter, the number of which is plural and arranged in a ring. The non-stop screen changing system for double filters according to claim 1, wherein the filter system is a filter box, and the filter part B inside the filter system is a filter screen, the number of which is plural and arranged in layers. The no-stop screen changing system for dual filters as claimed in claim 5 or 6, wherein the filters have gaps of different thicknesses and sizes. The no-stop screen changing system for double filters as claimed in claim 1, wherein the gate in the waste flow channel is a ball valve gate. As claimed in claim 1, the system for changing the screen without stopping the double filter screen further comprises the following steps: (a). Turn on the dry vacuum pump to make the system for changing the screen without stopping the double filter screen into a vacuum state; (b). When the device enters the filter device, the waste on the plastic will fall into the waste part, and the gas generated during the process will be sucked into the filter part A for the first filtration; (c). The gas after the first filtration enters the filter system for The second filtration; (d). The gas for the second filtration enters the dry vacuum pump and is discharged; (e) Pay attention to the vacuum gauge at any time during the process to ensure that the double filter screen replacement system maintains a vacuum state without downtime; (f) .When the filter system needs to be replaced, use the three-way T-valve B and the three-way T-valve C to close the filter system to be replaced, which can achieve simultaneous operation and replacement of the filter part B of the filter system; (g). Operation After the completion, close the gate of the high-pressure auxiliary cleaning system and the three-way T-valve A to separate the filter device and the waste part, and introduce the external air into the waste part, and turn on the discharge switch, at this time, the waste in the waste part can be released from Discharge at the discharge switch.

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