KR101198248B1 - Lens edging water treating apparatus with grinding powder automatic discharging device - Google Patents

Abstract

The present invention relates to a polishing wastewater treatment apparatus for spectacle lenses, and more particularly, to a spectacle lens polishing wastewater treatment apparatus having an automatic discharge device having a device for automatically collecting and discharging the abrasive powder discharged during the polishing process of the spectacle lens. It is about.
The present invention relates to a first polishing water tank for storing abrasive water supplied to a dehumidifier, and particles contained in wastewater introduced from the dehumidifier in order to remove contaminants contained in the abrasive wastewater used in the dehumidifier in advance. The second polishing water tank is provided with a strainer for filtering large contaminants, and a fine filter for filtering fine contaminants of wastewater supplied from the second polishing water tank. The first filter housing supplied to the first polishing water tank, the pump pumping the wastewater from the second polishing water tank to the first filter housing, and the abrasive powder which has not passed through the fine filter of the first filter housing are collected. Glasses provided with an automatic discharging device, including an automatic discharge tank for discharging the abrasive powder precipitated by the rotation of the screw to the outside is provided with a screw therein It provides an abrasive's waste water treatment apparatus.

Description

Lens edging water treating apparatus with grinding powder automatic discharging device

The present invention relates to a polishing wastewater treatment apparatus for spectacle lenses, and more particularly, to a spectacle lens polishing wastewater treatment apparatus having an automatic discharge device having a device for automatically collecting and discharging the abrasive powder discharged during the polishing process of the spectacle lens. It is about.

Conventional abrasive wastewater purification apparatus has been subjected to a smooth wastewater purification operation when using a general pump because the abrasive solid is attached to the filter when the filter is used for a long time.

In addition, the polishing water sucked during the polishing of the spectacles was introduced with glass and plastic powder generated during the polishing of the spectacle lens together with the fluid, resulting in damage to the pump, and the pump had to be frequently replaced.

In addition, due to the nature of the eyewear maker cleanliness is required, but there was a problem to clean the abrasive powder collected in the filter periodically.

In addition, eyeglasses manufacturers were often located in a narrow place, and thus the purifying device had to be manufactured to a minimum. In general, a general pump was difficult to reduce the size of the pump, and was constrained by the place.

According to the present invention, the vane pump can be used to raise the discharge pressure to 10 atm or higher, and the suction can also be at least 3 atm, so that the operation of the pump can be prevented even if there are obstacles caused by solid content. It is made of cemented carbide of 50 or more and hardly damages due to the solid content of the roller, so the pump life is long, so it is not frequently replaced. In addition, it is possible to solve a narrow place problem when using the vane pump.

In addition, it is equipped with an automatic discharge device so that the abrasive powder is automatically collected and can be easily processed.

The present invention, the first polishing water tank 10 for storing the abrasive water supplied to the dehumidifier (1); and the jade to remove in advance the contaminants contained in the abrasive waste water used in the dehumidifier (1) A second abrasive water tank (20) having a strainer (21) for filtering particles having a relatively large amount of contaminants contained in wastewater introduced from moisture (1); and supplied from the second abrasive water tank (20). A first filter housing (30) having a fine filter (31) for filtering fine contaminants of the wastewater, and for supplying fresh water filtered by the fine filter (31) to the first polishing water tank (10); and A pump 40 for pumping wastewater from the second abrasive water tank 20 to the first filter housing 30; And the abrasive powder which has not passed through the fine filter 31 of the first filter housing 30 and is deposited at the bottom thereof is collected, and a screw 61 is provided therein to externally polish the abrasive powder precipitated by the rotation of the screw 61. It provides an eyeglass lens polishing wastewater treatment device having an automatic discharge device configured to include; automatic discharge tank 60 for discharging.

Here, a second filter housing (50) for final processing of the fresh water filtered by the fine filter (31) by the ultra-fine filter (51) to supply to the first polishing water tank (10); It is characterized by.

In addition, the automatic discharge tank 60 is provided with a weight sensor 62 is characterized in that the screw 61 is automatically operated to reach the predetermined weight to discharge the abrasive powder.

In addition, the grinding powder discharge passage 63 between the first filter housing 30 and the automatic discharge tank 60 is provided with a solenoid valve 64, the solenoid valve 64 while the screw 61 is operating. A is characterized by blocking the further inflow of the abrasive powder by automatically blocking the abrasive powder discharge passage (63).

In addition, the discharge portion 65 of the automatic discharge tank 60 is provided with a solenoid valve 66, the solenoid valve 66 automatically opens the discharge portion 65 while the screw 61 is operating. It is characterized by giving.

In addition, the grinding powder waste box 67 for storing the abrasive powder discharged from the automatic discharge tank 60 is characterized in that it is further provided.

In addition, the pump 40 is characterized in that the vane pump for extruding the waste water at a high pressure of 10 atm or more to the fine filter 31 of the first filter housing (30).

In addition, the spacing of the sieve 21 is characterized in that more than 600㎛.

In addition, the interval between the fine filter 31 is characterized in that 100 ~ 200㎛.

In addition, the interval between the ultrafine filter 51 is characterized in that 50 ~ 100㎛.

In addition, a pressure gauge 41 is installed at the outlet of the pump 40, and when the pressure of the pump 40 falls below a predetermined pressure, the user may be alerted to the user by at least one of the warning alarm 42 and the warning lamp 43. It is characterized by telling.

In addition, the level gauge 11 is installed in the first polishing tank 10, and when the polishing water stored in the first polishing tank 10 is below a predetermined level, the warning alarm 12 or the warning lamp 13 It is characterized by informing the user of any one or more.

In addition, a level gauge 11 is installed in the first polishing water tank 10, and when the polishing water stored in the first polishing water tank 10 is below a predetermined level, the solenoid valve 14 connected to the water supply device is automatically It is characterized by automatic replenishment of open abrasive water.

In addition, the first abrasive tank 10 and the second abrasive tank 20 are separated from each other with the separator plate 15 interposed therebetween, and the upper portion of the separator plate 15 has a window 16. ) Is characterized in that it is provided.

In the present invention, the vane pump can be used to raise the discharge pressure to 10 atm or higher, and the suction capacity is 3 atm or higher, so that the operation of the pump is not overwhelming even if there are obstacles due to solids, and the impeller has hardness. It is manufactured with more than 50 cemented carbide and hardly damages due to solid content in the roller shape, so the pump has a long service life, and there is an advantage of not having to replace frequently.

In addition, it is possible to solve a narrow place problem when using the vane pump.

In addition, with the automatic discharge device, the abrasive powder is automatically collected and can be easily processed.

1 is a schematic diagram schematically showing the present invention,
2 and 3 is a schematic view showing an automatic discharge tank of the present invention,
4 is a perspective view showing a screw of the present invention,
5 is a block diagram showing the flow of abrasive water in the present invention,
6 is a perspective view showing an embodiment of the first and second abrasive tanks in the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in this specification and claims should not be construed in a common or dictionary sense, and the inventors will be required to properly define the concepts of terms in order to best describe their invention. Based on the principle that it can, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various equivalents may be substituted for them at the time of the present application. It should be understood that there may be water and variations.

1 is a schematic view showing the present invention, Figures 2 and 3 is a schematic view showing an automatic discharge tank of the present invention, Figure 4 is a perspective view showing a screw of the present invention, Figure 5 is a grinding water in the present invention And a block diagram showing the flow of the grinding powder, Figure 6 is a perspective view showing an embodiment of the first and second abrasive water tank in the present invention.

As shown in Figure 1, the present invention is a polishing wastewater treatment apparatus, the first abrasive tank 10, the second abrasive tank 20, the first filter housing 30, the pump 40 and the automatic discharge tank (60). It is configured to include, it is preferable to further pass through the filtration of the polishing water by further comprising a second filter housing (50).

The first polishing water tank 10 is a tank for storing the polishing water supplied to the dehumidifier 1 which is a machine for grinding and polishing the spectacle lens to a desired size, and may directly inject the polishing water from the outside. It is also possible to supply the filtered abrasive water by the abrasive wastewater treatment apparatus of the present invention. When the spectacle lens is processed, the fluid is supplied to the spectacle lens processing part to prevent the heating of the lens, the lens, and the like. Usually, water is used, which is called polishing water.

An underwater pump (not shown) is installed in the first polishing water tank 10 to pump the polishing water to the dehumidifier 1, but the pump may be installed outside of the water.

Preferably, the first abrasive tank 10 stores a predetermined amount of abrasive water to supply the abrasive water to the dehumidifier 1.

Accordingly, the level gauge 11 is installed in the first abrasive tank 10, and when the polishing water stored in the first abrasive tank 10 is lower than or equal to a predetermined level, the warning alarm 12 or the warning lamp 13 It is desirable to inform the user of any one or more of these. When the warning alarm 12 or the warning lamp 13 is detected, the user manually supplies the polishing water to the first salt water tank 10.

Alternatively, when the level gauge 11 is installed in the first polishing water tank 10 and the polishing water stored in the first polishing water tank 10 is lower than or equal to a predetermined level, the solenoid valve 14 connected to the water supply device is automatically provided. Automatic replenishment of open abrasive water is also possible. In this case, the water supply device and the first polishing water tank 10 should be mounted in a connected state, and the automatic operation of the solenoid valve 14 is set in accordance with the detection of the level gauge 11.

The second polishing water tank 20 is a place where the abrasive waste water used in the dehumidifier 1 is introduced, and in order to remove contaminants contained in the abrasive waste water used in the dehumidifier 1 in advance, A filtering net 21 is provided for filtering particles having a relatively large pollutant contained in the wastewater introduced in 1).

The material of the strainer 21 may be various, such as PP, PE, nylon, SUS, and the like, the spacing of the strainer 21 is preferably 600㎛ or more.

In the present invention, since the solids collected in the automatic discharge tank 60 to be described below are 200 to 400 μm or less in size, the solids are removed, but the size of the strainer 21 is preferably 600 μm or more to filter out contaminants larger than this. Do.

That is, the fine powder generated during the polishing process of the spectacle lens is allowed to pass, and the debris, protective vinyl, or the like, caused by the breakage of the lens due to malfunction of the moisturizer, is prevented from entering the pump 40.

The first filter housing 30 is a device for supplying the abrasive waste water treated by the present invention to the first polishing water tank 10, and the fine pollutants of the waste water supplied from the second polishing water tank 20 The fine filter 31 is provided to filter the fresh water filtered by the fine filter 31 to the first polishing water tank 10. Of course, when the second filter housing 50 to be described below is further provided, the abrasive wastewater treated in the first filter housing 30 passes through the second filter housing 50 to the second abrasive water tank 20. Supplied, which will be described later.

Here, the interval of the fine filter 31 is preferably 100 ~ 200㎛. When the second filter housing 50 is not provided, the fine filter 31 of the first filter housing 30 corresponds to the final filtration device, so that the interval between the fine filters 31 is provided to be close to 100 μm. It is desirable to. However, if the second filter housing 50 is provided because it will be subjected to an additional filtration process, it is preferable to provide a spacing of the fine filter 31 close to 200㎛.

The pump 40 serves to pump wastewater from the second polishing water tank 20 to the first filter housing 30, and it is preferable to use an underwater pump. Further, the fine filter 31 mounted on the first filter housing 30 is preferably a membrane filter, and in the case of the membrane filter, the abrasive water must be injected at high pressure to pass through the filter.

Thus, the pump 40 is preferably a vane pump for extruding wastewater at a high pressure of 10 atm or more to the fine filter 31 of the first filter housing 30, but is not limited thereto.

The vane pump is a pump that enables pumping at high pressure by using an impeller called vane to pump the fluid.The vane structure is a roller, not a plate. It is a pump that can exert high pressure of 10 atm or more without any problem. This can be used very usefully even if the filter is clogged with foreign matter can be pressed without pressure. In addition, the vane pump has a very good condition for pumping a fluid containing foreign matter corresponding to the suction pressure is also 3 atm.

In addition, a pressure gauge 41 is installed at the outlet of the pump 40, and when the pressure of the pump 40 falls below a predetermined pressure, the user may be alerted to the user by at least one of the warning alarm 42 and the warning lamp 43. It is desirable to inform.

This is because the pump 40 may be damaged when the pump 40 is idling by continuously pumping the polishing water to reduce the polishing water stored in the first polishing water tank 10.

However, if the device is stopped as a whole, the spectacle lens in process may be damaged, and thus, the entire circulation itself is not stopped, and only pumping of the pump 40 is stopped or pumping is also continued.

The second filter housing 50 finally processes the fresh water filtered by the fine filter 31 in the first filter housing 30 with an ultrafine filter 51 and converts the fresh water into reusable fresh water. It is a device for supplying to the water tank (10). This apparatus is intended to treat the polished water more cleanly, and corresponds to an arbitrary apparatus. That is, the filtration can be terminated by the fine filter 31 of the first filter housing 30, but it is to be subjected to an additional filtration process to supply more clean water to the dehumidifier (1).

Thus, the interval of the ultrafine filter 51 provided in the second filter housing 50 is preferably 50 ~ 100㎛. This is because it is a process that proceeds further filtration is preferably provided smaller than the interval of the fine filter 31.

The automatic discharge tank 60 collects the abrasive powder which has not passed through the fine filter 31 of the first filter housing 30 and settles downward, and has a screw 61 provided therein to rotate the screw 61. It is a device to discharge the solid precipitated by the outside.

In case of using the prior art, it is necessary to clean the abrasive powder collected in the filter because of the necessity of cleanliness due to the characteristics of the optician, which has been pointed out as a disadvantage to the cleanliness by the avoidance of the optician.

The automatic polishing powder discharging device ultimately does not discharge the polishing water, but only discharges the polishing powder to achieve the purpose of the apparatus. Since the abrasive powder in the gel state has a specific gravity, and the abrasive powder that does not pass through the fine filter 31 is heavier than the abrasive water, it is precipitated to the lower portion of the first filter housing 30 and is provided in the solid discharge passage 63. The solenoid valve 64 is stacked below the first filter housing 30 until the solenoid valve 64 is opened.

However, even after the solenoid valve 64 is opened, and the solenoid valve 64 is not locked even after all of the abrasive powder settled down is discharged to the automatic discharge tank 60, the abrasive water is also discharged to the automatic discharge tank 60. There is a concern. In addition, if the abrasive water continues to flow as much as the operation of the automatic discharge tank 60 detects and operates the weight by the weight sensor 62, it is difficult to control and the first filter is automatically operated when the automatic discharge tank 60 is operated. When the part connected to the housing 30 is closed, it is possible to adjust the operation time and the stopping time of the automatic discharge tank 60.

Therefore, in the present invention, the solenoid valve 64 is provided so as to control the inflow of the abrasive powder by distinguishing the operation point and the stop point. However, even in this case, a small amount of abrasive water may be introduced, and when only the abrasive is actually accumulated and introduced into the automatic discharge tank 60, they may be difficult to discharge due to agglomeration with hard solids to supply water to some extent. It may be desirable to introduce a small amount of abrasive water. In this case, the introduced abrasive water is also discharged to the outside by the operation of the automatic discharge tank 60 together with the abrasive powder.

In this case, the automatic discharge tank 60 is provided with a weight sensor 62 is preferably a screw 61 is automatically operated to discharge the abrasive powder when a predetermined weight is reached.

That is, as shown in FIG. 4, the spiral screw 61 is used as a means for collecting the abrasive powder deposited in the lower portion of the first filter housing 30.

In addition, as shown in Figure 2, to detect the weight of the automatic discharge tank 60 to induce the operation of the screw 61 automatically using the load cell as a weight sensor 62 at the bottom of the automatic discharge tank 60 When the weight of the automatic discharge tank 60 reaches a predetermined weight, the screw 61 is automatically operated to discharge the accumulated abrasive powder.

In addition, the grinding powder discharge passage 63 between the first filter housing 30 and the automatic discharge tank 60 is provided with a solenoid valve 64, the solenoid valve 64 while the screw 61 is operating. It is preferable to automatically block the grinding powder discharge passage 63 to block the further inflow of the grinding powder.

In the case where the screw 61 is operated, when the abrasive water is introduced from the first filter housing 30, it is difficult to discharge the abrasive powder in the gel state, and thus the abrasive water is automatically discharged by the solenoid valve 64 in the abrasive powder discharge passage 63. It is to automatically block the inflow.

In addition, the discharge portion 65 of the automatic discharge tank 60 is provided with a solenoid valve 66, the solenoid valve 66 automatically opens the discharge portion 65 while the screw 61 is operating. It is desirable to give.

This also relates to the automatic operation of the screw 61 described above, so that the solenoid valve 64 is provided on the discharge part 65 so as to automatically discharge the abrasive powder pushed out by the screw 61 to be automatically operated. will be.

In addition, the abrasive powder waste box 67 for storing the abrasive powder discharged from the automatic discharge tank 60 is further provided to store the discharged abrasive powder, it is preferable to clean the abrasive powder waste box 60 periodically Do.

In addition, the present invention preferably includes a controller (not shown) to control the present invention as a whole. That is, the control unit (not shown) is a level gauge 11, warning alarms 12, 42, warning lamps 13, 43, solenoid valves 14, 64, 66, pressure gauge 41, weight It is connected to each of the sensor 62 and the like to control the overall operation of the present invention.

Hereinafter, a process of circulating abrasive water in the present invention will be described with reference to FIG. 5.

First, the abrasive water stored in the first polishing water tank 10 is supplied to the wet humidifier 10 using an submersible pump, and the polishing waste water after the abrasive water is used in the polishing process of the spectacle lens in the wet humidifier 1 is After being discharged to the second abrasive tank 20 and filtered first in the strainer 21, the vane pump 40 is sprayed into the fine filter 31 provided in the first filter housing 30 and filtered secondly. As a result of being filtered by the ultra-fine filter 51 provided in the second filter housing 50, it is supplied to the first polishing water tank 10.

In addition, the abrasive powder supplied to the first filter housing 30 but not passing through the fine filter 31 is naturally precipitated under the first filter housing 30 by gravity, and the first filter housing 30 It is supplied to the automatic discharge tank 60 along the abrasive powder discharge passage 63 communicating with the automatic discharge tank 60, discharged to the abrasive powder waste box 67 by the operation of the screw 62, and finally the spectacle lens abrasive powder waste water. It is discharged to the outside of the processing apparatus.

In addition, the first abrasive tank 10 and the second abrasive tank 20 are separated from each other with the separator plate 15 interposed therebetween, and the upper portion of the separator plate 15 has a window 16. Is preferably provided.

This is because, when polishing the spectacle lens in the dehumidifier (1), the abrasive water contains some mucus components together with the lens solids and the abrasive stone solids in the process of passing through the strainer 21 of the second abrasive tank 20. If the sieve 21 is clogged with foreign matter, the second polishing water tank 20 may overflow, and the capacity of the pump 40 for the purification of the polishing wastewater is temporarily greater than the amount of the polishing wastewater sprayed on the dehumidifier 1. Since the second polishing water tank 20 may overflow when the polishing wastewater cannot be treated in a timely manner, the first polishing water tank (if the capacity of the second polishing water tank 20 is exceeded to prevent this). 10) so that the polishing waste water can be temporarily moved.

That is, as shown in Figure 6, the first abrasive tank 10 and the second abrasive tank 20 is provided in a shape separated from each other with a separation plate 15 therebetween, the separation plate If the window 16 is provided on the upper portion of 15 so that the capacity of the second polishing water tank 20 cannot handle the amount of the polishing wastewater flowing in, the polishing waste water is temporarily stored in the first polishing water tank 10. So that the abrasive waste water does not spill out. Here, the window 16 is preferably installed about 20% lower than the height of the second abrasive tank 20.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

1: Oxygen
10: first abrasive tank 11: level gauge
12: warning alarm 13: warning lamp
14 solenoid valve 15 separation plate
16: window 20: second abrasive tank
21: strainer 30: the first filter housing
31: fine filter 40: pump
41: pressure gauge 42: warning alarm
43: warning lamp 50: the second filter housing
51: ultra fine filter 60: automatic discharge tank
61: screw 62: weight sensor
63: grinding powder discharge passage 64: solenoid valve
65 outlet portion 66 solenoid valve
67: grinding powder waste box

Claims (14)

A first polishing water tank 10 for storing the polishing water supplied to the dehumidifier 1;
In order to remove contaminants contained in the abrasive wastewater used in the dehumidifier 1 in advance, a strainer 21 is provided in which the particles contained in the wastewater introduced from the dehumidifier 1 filter out relatively large contaminants. A second abrasive tank 20;
It is provided with a fine filter 31 for filtering the fine contaminants of the waste water supplied from the second polishing water tank 20, the fresh water filtered by the fine filter 31 to the first polishing water tank (10) A first filter housing 30 to supply;
A pump 40 for pumping wastewater from the second polishing water tank 20 to the first filter housing 30; And
The abrasive powder precipitated to the lower part by not passing through the fine filter 31 of the first filter housing 30 is collected, and a screw 61 is provided therein to transfer the abrasive powder precipitated by the rotation of the screw 61 to the outside. Eyeglass lens polishing wastewater treatment device provided with an automatic discharge device comprising a; automatic discharge tank 60 for discharging. The method of claim 1,
And a second filter housing (50) for finally processing the fresh water filtered by the fine filter (31) by the ultrafine filter (51) and supplying it to the first polishing water tank (10). Eyeglass lens polishing wastewater treatment apparatus provided with an automatic discharge device. The method of claim 1,
The automatic discharge tank 60 is provided with a weight sensor 62, when the predetermined weight is reached, the screw 61 is automatically operated to discharge the abrasive powder, characterized in that the glasses lens polishing waste water with an automatic discharge device Processing unit. The method of claim 3,
A solenoid valve 64 is provided in the abrasive powder discharge passage 63 between the first filter housing 30 and the automatic discharge tank 60.
While the screw 61 is in operation, the solenoid valve 64 automatically blocks the abrasive powder discharge passage 63 to block the further inflow of the abrasive powder. . The method of claim 3,
The solenoid valve 66 is provided in the discharge part 65 of the automatic discharge tank 60,
Eyeglass lens polishing wastewater treatment apparatus equipped with an automatic discharge device, characterized in that the solenoid valve 66 automatically opens the outlet 65 while the screw (61) is operating. The method according to any one of claims 1 to 5,
Eyeglass lens polishing wastewater treatment apparatus equipped with an automatic discharge device, characterized in that the abrasive discharge box (67) for storing the polishing powder discharged from the automatic discharge tank (60) is further provided. The method of claim 1,
The pump 40 is a spectacle lens polishing wastewater treatment apparatus equipped with an automatic discharge device, characterized in that the vane pump for extruding the wastewater at a high pressure of 10 atm or more to the fine filter 31 of the first filter housing (30). The method of claim 1,
The spectacle lens polishing wastewater treatment apparatus with an automatic discharge device, characterized in that the interval of the strainer 21 is 600㎛ or more. The method of claim 1,
The spectacle lens polishing wastewater treatment apparatus equipped with an automatic discharge device, characterized in that the interval of the fine filter 31 is 100 ~ 200㎛. The method of claim 2,
The interval between the ultrafine filter 51 is 50 ~ 100㎛ spectacle lens polishing wastewater treatment apparatus equipped with an automatic discharge device. The method of claim 1,
The pressure gauge 41 is installed at the outlet of the pump 40, and when the pressure of the pump 40 falls below a predetermined pressure, the user is notified by any one or more of the warning alarm 42 or the warning lamp 43. Eyeglass lens polishing wastewater treatment apparatus provided with an automatic discharge device. The method of claim 1,
A level gauge 11 is installed in the first abrasive tank 10, and when the polishing water stored in the first abrasive tank 10 is lower than or equal to a predetermined level, one of the warning alarm 12 and the warning lamp 13 is provided. Eyeglass lens polishing wastewater treatment apparatus equipped with an automatic discharge device, characterized in that the user above. The method of claim 1,
A level gauge 11 is installed in the first polishing tank 10, and when the polishing water stored in the first polishing tank 10 is below a predetermined level, the solenoid valve 14 connected to the water supply device is automatically opened and polished. Eyeglass lens polishing wastewater treatment apparatus equipped with an automatic discharge device, characterized in that to automatically replenish the water. The method of claim 1,
The first abrasive tank 10 and the second abrasive tank 20 are shaped to be separated from each other with a separator plate 15 therebetween,
Eyeglass lens polishing wastewater treatment apparatus equipped with an automatic discharge device, characterized in that the window 16 is provided on the upper portion of the separating plate (15).

Images