CN211513838U

CN211513838U - Vacuum filter device

Info

Publication number: CN211513838U
Application number: CN201922405716.0U
Authority: CN
Inventors: 张凯; 王东
Original assignee: Panasonic Manufacturing Beijing Co Ltd
Current assignee: Panasonic Manufacturing Beijing Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-09-18
Anticipated expiration: 2029-12-27

Abstract

The utility model provides a vacuum filter device, vacuum filter device includes: one-level filter unit, one-level filter unit includes filtration equipment, filtration equipment includes first vacuum tank, first vacuum tank is provided with first air inlet and first exhaust port, be provided with the water conservancy diversion wall in the first vacuum tank, the water conservancy diversion wall orientation first air inlet, through first air inlet gets into the gas impact of first vacuum tank the water conservancy diversion wall to granular impurity in the gas can fall into first vacuum tank. Through adopting above-mentioned technical scheme, set up the water conservancy diversion wall in filtration equipment, strike the water conservancy diversion wall after gas gets into first vacuum tank, make the graininess impurity in the gas fall into first vacuum tank to prevent that the gas that contains impurity from getting into the vacuum pump, avoid the vacuum pump to break down.

Description

Vacuum filter device

Technical Field

The utility model relates to a vacuum filter device.

Background

In the prior art, the extruder is directly connected to the vacuum pump through a pipeline, so that impurities and water vapor in the extruder can enter the vacuum pump through the pipeline, and the vacuum pump and the pipeline connecting the vacuum pump and the extruder are easily blocked. In addition, the steam enters the vacuum pump to raise the working temperature of the vacuum pump, increase the working load, and easily cause the vacuum pump to break down or even burn the motor of the vacuum pump.

SUMMERY OF THE UTILITY MODEL

Based on the prior art, the utility model aims at providing a vacuum filter device can filter the impurity that probably gets into the vacuum pump, avoids the vacuum pump to break down.

The utility model provides a vacuum filter device, vacuum filter device includes: one-level filter unit, one-level filter unit includes filtration equipment, filtration equipment includes first vacuum tank, first vacuum tank is provided with first air inlet and first exhaust port, be provided with the water conservancy diversion wall in the first vacuum tank, the water conservancy diversion wall orientation first air inlet, through first air inlet gets into the gas impact of first vacuum tank the water conservancy diversion wall to granular impurity in the gas can fall into first vacuum tank.

Preferably, a first filtering bin is arranged in the first vacuum tank, the flow guide wall comprises at least one part of side wall of the first filtering bin, the first filtering bin is provided with a vent hole through which gas can pass, and the gas entering the first vacuum tank can pass through the first filtering bin from the vent hole under the flow guide of the flow guide wall and is discharged out of the first vacuum tank through the first exhaust hole.

Preferably, the first filter bin is provided with a top wall and a bottom wall, and the vent holes are formed in the top wall and the bottom wall, so that gas can pass through the first filter bin in the vertical direction.

Preferably, a metal filter body is arranged inside the first filter bin.

Preferably, the vacuum filter device further comprises a secondary filter unit connected to a downstream side of the primary filter unit in an air flow direction, and a filter body made of metal is arranged inside the secondary filter unit.

Preferably, the primary filter unit comprises at least two filter devices, at least two filter devices are connected in parallel, and a valve is connected to at least two filter devices, wherein the valve can keep at least one filter device in the at least two filter devices in a communication state with a vacuum pumping device, and at least another filter device in a disconnection state with the vacuum pumping device.

Preferably, the at least two filtering devices comprise a first filtering device and a second filtering device, the first filtering device comprises a first valve, the first valve controls the connection or disconnection state of the first filtering device and the vacuum pumping device, and the second filtering device comprises a second valve, and the second valve controls the connection or disconnection state of the second filtering device and the vacuum pumping device.

Preferably, the guide wall is plate-shaped and is disposed in an up-and-down direction, the guide wall extends to the top of the first vacuum tank, and the guide wall allows the gas to flow downward.

Preferably, the first filter bin is attached to the inner wall of the first vacuum tank.

Preferably, the vacuum filter device is connected between an extruder located on an upstream side of the vacuum filter device and a vacuum pump located on a downstream side of the vacuum filter device to evacuate the extruder.

Through adopting above-mentioned technical scheme, set up the water conservancy diversion wall in filtration equipment, strike the water conservancy diversion wall after gas gets into first vacuum tank, make the graininess impurity in the gas fall into first vacuum tank to prevent that the gas that contains impurity from getting into the vacuum pump, avoid the vacuum pump to break down.

Drawings

Fig. 1 shows a schematic structural view of a vacuum filtration apparatus according to an embodiment of the present invention.

Fig. 2 shows a schematic structural view of a first filter silo of a vacuum filter device according to an embodiment of the present invention.

Fig. 3 shows a cut-away schematic view of a first filter cartridge of a vacuum filtration device according to an embodiment of the present invention.

Description of the reference numerals

1 first stage filtering unit

11 first filtering device 111 first vacuum vessel 112 first filtering bin 112a top wall 112b bottom wall 112c peripheral wall 112d first valve 114 first air inlet 115 first air outlet

12 second filtration device 121 second vacuum tank 122 second filtration bin 123 second valve

2 second-stage filtering unit 21, third vacuum tank 22, second air inlet 23, second air outlet 24 and filtering body

3 Filter element

100 extruder 200 vacuum pump.

Detailed Description

In order to more clearly illustrate the above objects, features and advantages of the present invention, the detailed description of the embodiments of the present invention is provided in this section in conjunction with the accompanying drawings. The present invention can be embodied in other different forms than the embodiments described in this section, and those skilled in the art can make various modifications, changes and substitutions without departing from the spirit of the present invention, so that the present invention is not limited to the specific embodiments disclosed in this section. The protection scope of the present invention shall be subject to the claims.

As shown in fig. 1, the present invention provides a vacuum filtering device, which can be installed between an extruder 100 and a vacuum pump 200, and can generate an air flow from the extruder 100 to the vacuum pump 200 through the vacuum pump 200 as a vacuum pumping device. The vacuum filtering apparatus is used to prevent impurities, water vapor, etc. in the extruder 100 from entering the vacuum pump 200 through a pipe.

The vacuum filter device comprises a primary filter unit 1 and a secondary filter unit 2, wherein the primary filter unit 1 and the secondary filter unit 2 are connected through a pipeline, for example, the pipeline can be a high-temperature-resistant transparent hose. The primary filter unit 1 is disposed on the upstream side of the secondary filter unit 2 in the air flow direction.

The primary filter unit 1 comprises at least two filter devices connected in parallel by a pipeline, for example the primary filter unit 1 comprises a first filter device 11 and a second filter device 12. The upstream sides of the first filtering apparatus 11 and the second filtering apparatus 12 are connected to the extruder 100 through pipes, and the downstream sides of the first filtering apparatus 11 and the second filtering apparatus 12 are connected to the vacuum pump 200 through pipes.

The first filtering apparatus 11 includes a first vacuum tank 111, a first filtering silo 112, and a first valve 113. The second filtering apparatus 12 includes a second vacuum tank 121, a second filter bin 122, and a second valve 123. The first filter device 11 and the second filter device 12 may have the same structure, so that only the structure of the first filter device 11 will be described in detail below, and detailed description of the specific structure of the second filter device 12 will not be repeated.

As shown in fig. 1, the first vacuum tank 111 is provided with a first air inlet 114 and a first air outlet 115, the first air inlet 114 is connected to the extruder 100 through a pipe, and the first air outlet 115 is connected to the secondary filter unit 2 through a pipe. The first air inlet 114 may be located at a middle or lower portion of the first vacuum tank 111, and the first air outlet 115 may be located at an upper portion of the first vacuum tank 111. The first filtering bin 112 is disposed in the first vacuum tank 111.

As shown in fig. 2 and 3, the first filter cartridge 112 includes a top wall 112a, a bottom wall 112b, a peripheral wall 112c, and a guide wall 112 d. The peripheral wall 112c and the flow guide wall 112d may define the peripheral surface of the first filter cartridge 112, the top wall 112a and the bottom wall 112b form the top and the bottom of the first filter cartridge 112, and the top wall 112a and the bottom wall 112b are provided with vent holes through which gas can pass in the up-down direction through the first filter cartridge 112. The peripheral wall 112c may be bonded to the inner wall surface of the first vacuum tank 111, for example, the first vacuum tank 111 may be cylindrical, the first filtration silo 112 may be semi-cylindrical, and the peripheral wall 112c may be arc-shaped.

The guide wall 112d is located between the first air inlet 114 and the first air outlet 115, and the guide wall 112d may be a flat plate shape disposed in the up-down direction. The guide wall 112d faces the first gas inlet 114, so that the gas entering the first vacuum tank 111 can impact the guide wall 112d, and the particulate impurities in the gas can fall into the first vacuum tank 111. The guide wall 134 extends to the top of the first vacuum tank 111, and the air impacting the guide wall 112d flows downward into the first filter cartridge 112 through the vent holes in the bottom wall 112b, flows upward in the first filter cartridge 112, flows out of the first filter cartridge 112 through the vent holes in the top wall 112a, and then exits the first vacuum tank 111 through the first air outlet 115.

The first filtering silo 112 is disposed at an upper portion of the first vacuum tank 111, and the first filtering silo 112 may be hung on the top of the first vacuum tank 111 by providing a hook on the flow guide wall 112 d. The first filter bunker 112 can be taken out by opening the top cover of the first vacuum tank 111, thereby facilitating maintenance and cleaning of the first filter bunker 112. The first air outlet 115 is located above the top wall 112a, and the flow guide wall 112d protrudes upward from the top wall 112a, so that the flow guide wall 112d blocks the front surface of the first air outlet 115. The bottom of the first vacuum tank 111 may be provided with a discharge port capable of discharging impurities in the first vacuum tank 111.

A filter body is arranged in the first filter bin 112, and the filter body may be made of metal, for example, the filter body may be a steel wire mesh or a steel wire ball. The metal has good heat-conducting property, and the steel wire mesh or the steel wire balls can cool water vapor in gas and can retain partial impurities in the gas to play a role in filtering the gas.

The top wall 112a and the peripheral wall 112c and/or the guide wall 112d may be detachably connected, so that the filter bodies in the first filter cartridge 112 can be replaced by opening the top wall 112 a.

The first valve 113 is connected to the first vacuum tank 111, and when the first valve 113 is opened, the first filtering device 11 is in communication with the extruder 100 upstream thereof, and the gas discharged from the extruder 100 may be filtered through the first filtering device 11. The second valve 123 is connected to the second vacuum tank 121, and when the second valve 123 is opened, the second filtering device 12 is in communication with the extruder 100 upstream thereof, and the gas discharged from the extruder 100 may be filtered through the second filtering device 12.

The first valve 113 is installed between the first vacuum tank 111 and the vacuum pump 200, and the second valve 123 is installed between the second vacuum tank 121 and the vacuum pump 200.

One of the first valve 113 and the second valve 123 may be opened and the other closed during at least a portion of the time that the vacuum filtration device is in use. So that one filtering apparatus in the primary filtering unit 1 is in a connected state with the vacuum pump 200 and the other filtering apparatus is in a disconnected state with the vacuum pump 200, filtering is performed using only the first filtering apparatus 11 or the second filtering apparatus 12. The first filtering device 11 and the second filtering device 12 can be alternately used by switching the states of the first valve 113 and the second valve 123, thereby ensuring continuous and stable operation of the vacuum filtering apparatus.

For example, when the first valve 113 is opened and the second valve 123 is closed, and filtration is performed using only the first filter device 11, the second filter device 12 can be cleaned, maintained, or repaired. After cleaning, maintenance or repair is completed, the second valve 113 may be opened and the first valve 123 may be closed, and only the second filtering apparatus 12 may be used for filtering, and cleaning, maintenance or repair may be performed on the first filtering apparatus 11. Alternatively, the first valve 113 and the second valve 123 may be opened simultaneously, and the first filtering device 11 and the second filtering device 12 may be used to perform filtering simultaneously.

It is understood that the first valve 113 and the second valve 123 may be replaced by a three-way valve.

As shown in fig. 1, the secondary filtering unit 2 includes a third vacuum tank 21, the third vacuum tank 21 is provided with a second air inlet 22 and a second air outlet 23, the second air inlet 22 is connected to the primary filtering unit, and the second air outlet 23 is connected to the vacuum pump 200.

A filter 24 is arranged in the third vacuum tank 21, the filter 24 may be made of metal, for example, the filter 24 may be a steel wire mesh or a steel wire ball.

It can be understood that most of the granular impurities in the gas can be filtered after the gas passes through the primary filtering unit 1, and the temperature of the water vapor in the gas is reduced. The temperature of the gas may still be high, and the gas may be further cooled by the secondary filtration unit 2, and the water vapor may be liquefied into water droplets, which fall into the third vacuum tank 21 under the action of gravity.

As shown in fig. 1, a filter element 3 may be further disposed between the secondary filtering unit 2 and the vacuum pump 200, the filter element 3 may further filter the gas entering the vacuum pump 100, and the filter element 3 is mainly used for filtering minute impurities such as dust in the gas, so as to prevent the impurities from entering the vacuum pump 200.

Claims

1. A vacuum filtration apparatus, comprising: one-level filter unit (1), one-level filter unit (1) includes filtration equipment (11, 12), filtration equipment (11, 12) include first vacuum tank (111), first vacuum tank (111) are provided with first air inlet (114) and first exhaust port (115), be provided with water conservancy diversion wall (112d) in first vacuum tank (111), water conservancy diversion wall (112d) orientation first air inlet (114), through first air inlet (114) get into the gas impact of first vacuum tank (111) water conservancy diversion wall (112d) to granular impurity in the gas can fall into first vacuum tank (111).

2. The vacuum filtration device according to claim 1, wherein a first filter cartridge (112) is disposed in the first vacuum tank (111), the guide wall (112d) comprises at least a part of a side wall of the first filter cartridge (112), the first filter cartridge (112) is provided with a vent hole through which gas can pass, and gas entering the first vacuum tank (111) can pass through the first filter cartridge (112) from the vent hole under the guide of the guide wall (112d) and be discharged out of the first vacuum tank (111) through the first exhaust hole (115).

3. The vacuum filtration device according to claim 2, wherein the first filtration cartridge (112) is provided with a top wall (112a) and a bottom wall (112b), and the vent holes are provided in the top wall (112a) and the bottom wall (112b) to allow gas to pass through the first filtration cartridge (112) in an up-down direction.

4. Vacuum filter device according to claim 2, characterized in that the interior of the first filter cartridge (112) is provided with a filter body made of metal.

5. Vacuum filter arrangement according to claim 1, characterised in that the vacuum filter arrangement further comprises a secondary filter unit (2), which secondary filter unit (2) is connected to the downstream side of the primary filter unit (1) in the direction of the gas flow, the secondary filter unit (2) being provided internally with a filter body made of metal.

6. Vacuum filter arrangement according to claim 1, wherein the primary filter unit (1) comprises at least two filter devices (11, 12), at least two filter devices (11, 12) being connected in parallel, a valve being connected to at least two filter devices (11, 12), the valve being capable of keeping at least one of the filter devices (11, 12) in a connected state with a vacuum means and at least one other filter device in a disconnected state with the vacuum means.

7. Vacuum filter arrangement according to claim 6, wherein the at least two filter devices (11, 12) comprise a first filter device (11) and a second filter device (12), the first filter device (11) comprising a first valve (113), the first valve (113) controlling the connection or disconnection of the first filter device (11) to the vacuum means, the second filter device (12) comprising a second valve (123), the second valve (123) controlling the connection or disconnection of the second filter device (12) to the vacuum means.

8. The vacuum filter device according to claim 1, wherein the guide wall (112d) is plate-shaped and disposed in an up-down direction, the guide wall (112d) extends to a top of the first vacuum tank (111), and the guide wall (112d) allows the gas to flow downward.

9. Vacuum filter arrangement according to claim 2, wherein the first filter cartridge (112) is in abutment with an inner wall of the first vacuum tank (111).

10. Vacuum filter arrangement according to any of claims 1-9, characterized in that the vacuum filter arrangement is connected between an extruder (100) and a vacuum pump (200), the extruder (100) being located on the upstream side of the vacuum filter arrangement and the vacuum pump (200) being located on the downstream side of the vacuum filter arrangement for evacuating the extruder (100).