JP4944731B2 - Self-priming filter - Google Patents

Description

  The present invention relates to a self-priming filtration device, and more particularly to a filtration device equipped with a self-priming pump.

  In the chemical and other fields, filtration devices are commonly used as a means for removing impurities from a wide variety of types of liquids. Among them, as a filtration device equipped with a pump for sucking liquid stored in a tank or the like and filtering it with a filter and then sending it to a subsequent process or circulating it back to the tank, a pump with a push-type foot valve is used. There is known a type provided with (see Patent Documents 1 and 2, etc.).

  On the other hand, as a self-priming pump having a valveless configuration, a self-priming chemical pump is known (see Patent Document 3).

  In the filter devices of the types of Patent Documents 1 and 2, it is essential to drain the liquid in advance when replacing the filter.

  However, the recovery of the liquid drained from the drain must be performed manually using a bucket or the like, which is not only complicated, but also has the disadvantage of being dangerous depending on the type of liquid.

  In addition, a filter that has been immersed in the liquid until the liquid is drained may cause dripping of the liquid remaining on the surface of the filter or in the eyes even if the liquid is drained. In addition to soiling the surroundings of the equipment, it is difficult to take out the dripping filter, the replacement work is complicated and troublesome, and there is a disadvantage that it is dangerous depending on the type of liquid.

  Furthermore, when the operation is resumed after the filter replacement, the pump needs to be ventilated and priming water, which is not only troublesome, but also has the disadvantage that the operation interruption time is prolonged.

Therefore, in order to solve the above-described conventional problems, the present inventor has a suction port, a suction chamber, an impeller, a self-priming chamber, and a discharge port in order from the upstream to the downstream of the flow path, and is located above the suction chamber and the impeller. to Yes and disposed inlet and discharge ports, are disposed a self-priming chamber in position above suction plug mouth and the discharge port, the pump unit is a self-priming pump valveless construction without check valve A filtration tower disposed on the flow path between the self-priming chamber and the discharge port and at a position above the self-priming chamber; and at a position above the liquid remaining in the pump section in the filtration tower and when the pump section is stopped. A self-priming filter device (Patent Document 4) having a configuration including an arranged filter has been proposed previously.

Japanese Patent Laying-Open No. 2005-238071 JP 2004-188337 A Japanese Patent No. 2665140 Japanese Patent Application No. 2006-119121

  The present inventor continued further research based on the previously proposed technology. In the previously proposed technology, the filter replacement work is easy and safe, and the conventional technology such as the need for air venting and priming in the pump is unnecessary. Although the problem has been solved, when adopting a horizontal pump configuration in which the drive part of the pump part is connected horizontally, the installation area needs to be wide in the horizontal direction, and installation is difficult or impossible depending on the installation space. It has been found that there are cases where the installation direction is limited.

  Therefore, the object of the present invention is that the filter replacement work is easy and safe, the pump does not require air venting and priming, and the installation space and the installation direction are less restricted than when a horizontal pump configuration is adopted. The object is to provide a suction filtration device.

  The object of the present invention is achieved by the following constitution.

1. A suction port, a suction chamber, an impeller, a self-priming chamber, and a discharge port are provided in the order from the upstream to the downstream of the flow path, and the suction port and the discharge port are disposed above the suction chamber and the impeller. and the upper position from the discharge port are disposed the self-priming chamber, a pump unit is a self-priming pump valveless construction without check valve,
A drive unit connected to a lower part of the pump unit and serving as a drive source of the pump unit;
A filtration tower disposed on a flow path between the self-priming chamber and the discharge port and above the self-priming chamber, and a residual liquid in the pump section in the filtration tower and when the pump section is stopped A filter unit provided with a filter disposed at a higher position;
A self-priming filtration device characterized by comprising:

2. 2. The self-priming filtration device according to 1 above, wherein the filtering device section is provided at an upper portion of the self-priming chamber.

3. In the above 1 or 2, wherein the filtration unit, the pump unit, and the drive unit are linearly arranged in the order of the filtration unit, the pump unit, and the drive unit from above to below. The self-priming filter device described.

4). 4. The self-priming filtration device according to any one of the above items 1 to 3, wherein the suction chamber and the self-priming chamber have the same capacity or substantially the same capacity.

5). 5. The self-priming filter device according to any one of the above items 1 to 4, wherein the filter tower of the filter device unit and the pump unit have an integral configuration.

6). The self-priming filter device according to any one of the above items 1 to 4, wherein the pump unit and the filter device unit have a separate configuration in which a filter tower of the filter device unit is connected to an upper part of the pump unit. .

7). The self-priming filter device according to any one of the above items 1 to 6, wherein the filter is a cartridge type that can be attached and detached.

8). 8. The self-priming filter device as described in any one of 1 to 7 above, wherein the pump unit is driven by a magnet coupling system.

  According to the first aspect of the present invention, when the operation is stopped, the liquid in the filtration tower is emptied by the discharge and the back flow, and the liquid staying or adhering to the eyes or the surface of the filter also flows out. Without removing the liquid from the drain, the filter in the filter tower can be taken out and replaced without dripping. Therefore, the filter replacement operation can be performed very easily without polluting the operator and the surroundings of the equipment. In particular, when the liquid is a dangerous chemical, the filter replacement operation can be performed safely without exposure to danger.

  In addition, when the operation is stopped, the liquid in the filtration tower is emptied, but the liquid remains in the suction chamber and the impeller disposed below the suction port and the discharge port. By simply starting, the operation can be resumed immediately without venting and priming.

  In addition, the vertical pump configuration in which the drive unit is connected to the lower part of the pump unit not only requires less installation space compared to the case of adopting the horizontal pump configuration in the previously proposed technology, but also changes in the installation space depending on the installation direction. There is almost no restriction due to the installation direction.

  According to the second aspect of the present invention, the filter tower of the filter device section is provided in the upper part of the self-priming chamber, so that the self-priming chamber and the filtration tower are in communication with each other, and the discharge port and the self-priming chamber. Can be easily disposed on the path between the two.

  According to the third aspect of the present invention, the lightest weight filter unit is disposed at the top, the next lightest pump unit, and the heaviest drive unit at the bottom. In addition to having a sense of stability, the drive shaft of the motor of the drive unit and the rotation shaft of the impeller of the pump unit can be aligned in the vertical direction by being arranged linearly from above to below. There is little blurring during operation, and operation in a stable state can be easily obtained.

  According to the fourth aspect of the present invention, the capacity of the suction chamber and the self-priming chamber are the same or substantially the same, so that the capacity of the liquid that moves when the operation is stopped and when the operation is restarted can be matched or substantially matched. it can. In particular, when the operation is restarted, the total amount of liquid in the suction chamber moves to the self-priming chamber due to the rotation of the impeller, so that the liquid level in the suction chamber rises by that amount and then circulates in the self-priming chamber etc. with twice the amount of liquid. Therefore, the self-priming operation is completed quickly with a large amount of suction.

  According to the fifth aspect of the present invention, the pump unit and the filtering device unit can be made more compact and simpler than the separate configuration due to the integral configuration.

  According to the invention shown in claim 6, the pump unit and the filter device unit are diverted from existing and existing self-priming pumps by a separate configuration in which the filter tower of the filter device unit is connected to the upper part of the pump unit. A filtering device can be obtained.

  According to the seventh aspect of the present invention, since the filter is a cartridge type that can be attached and detached, the filter can be replaced simply by replacing the cartridge type filter at the time of filter replacement.

  According to the eighth aspect of the present invention, since the driving method of the pump unit is the magnet coupling method, the liquid tightness at the pump unit can be secured very easily.

  Hereinafter, the details of the present invention will be described with reference to the accompanying drawings.

  1 is a schematic cross-sectional view showing an embodiment of a self-priming filter according to the present invention, FIG. 2 is a schematic enlarged cross-sectional view taken along line II-II in FIG. 1, and FIG. 2 is a schematic enlarged cross-sectional view taken along line III-III in FIG. 2, FIG. 4 is a schematic enlarged end view taken along line IV-IV in FIG. 1 showing the direction of liquid permeation through the filter, and FIG. It is a general | schematic fragmentary sectional view which shows 2nd Example. 1, 2, 3, and 5 partially omit cross-sectional lines in order to clarify the detailed configuration.

  As shown in FIGS. 1 to 3, the self-priming filter device 1 </ b> A according to the first embodiment of the present invention has a pump unit 2, a drive unit 3, and a filter device unit 4 as main components and is driven by the drive unit 3. By the pumping operation of the pump unit 2, the liquid to be filtered that is stored in a tank or the like (not shown) is sucked from the suction port 21 through the conduit 11, and the sucked liquid is sent to the filtration tower 41 of the filtering device unit 4. Then, the liquid is filtered by the filter 42 and then sent to the next process from the discharge port 22 via the conduit 12 or is returned to the original tank and circulated. In the first embodiment shown in FIG. 1 and FIG. 2, the filtration tower 41 and the pump unit 2 of the filtration device unit 4 are integrated.

Pump unit 2 is a self-priming pump without valveless construction of the check valve, inlet 21, the suction chamber 23, an impeller 24 having a magnet 24A, self-priming chamber 25, sequentially in the flow path upstream of the discharge port 22 The suction port 21 and the discharge port 22 are disposed above the suction chamber 23 and the impeller 24, and the self-suction chamber 25 is disposed above the suction port 21 and the discharge port 22. The drive unit 3 is used as a drive source.

  In FIG. 1, reference numeral 13 denotes an air vent for exhausting air that has flowed into the filtration tower 41 during start-up, operation, and resumption, and reference numeral 26 denotes a blade from the suction chamber 23 by the operation (ie, rotation) of the impeller 24. A casing suction port 27 that is an introduction port for liquid sucked into the wheel 24, 27 is a vortex chamber discharge port that is a lead-out port for liquid sent out toward the self-suction chamber 25 by the operation (ie, rotation) of the impeller 24, and 28 It is a self-priming chamber passage portion that is a flow path when the liquid led out from the vortex chamber discharge port 27 is sent to the self-priming chamber 25. A self-priming circulation hole not shown in FIG. 1 is shown in FIG. 2 and FIG.

The pump unit 2, it is possible to adopt a priming and removal of air during operation resumption known and used self-priming pump type without valveless construction of the check valve is not required, as such type are, for example, And “self-priming chemical pump” described in Japanese Patent No. 2665140, which is a technique proposed by the present applicant. In order to accelerate the self-priming operation when the operation is resumed, it is preferable that the capacity of the suction chamber 23 and the self-priming chamber 25 is the same amount or substantially the same amount.

  The drive unit 3 has a so-called vertical pump configuration connected to the lower part of the pump unit 2 and serves as a drive source for the pump unit 2. In FIG. 1, 31 is a motor of the drive unit 3, 32 is a drive shaft rotated by the motor 31, 33 is a magnet coupling having a magnet 33 </ b> A, and 34 is a partition plate with the pump unit 2.

  The pump unit 2 can be driven by the drive unit 3 by using publicly known means as a drive system for this type of self-priming pump. Among them, the motor 31 of the drive unit 3 is connected to the magnet 33A via the drive shaft 32. It is preferable to use a magnet coupling system in which a pump operation is performed by rotating a magnet coupling 33 having a magnet and rotating an impeller 24 having a magnet 24A synchronously with a magnetic force in a liquid-tight non-contact state via a partition plate 34. .

  The filtration device section 4 is configured to include a filtration tower 41 and a filter 42 disposed in the filtration tower 41, and on the flow path between the self-priming chamber 25 and the discharge port 22, and It is disposed above the self-priming chamber 25 (in this embodiment, it is integrally connected to the upper portion of the self-priming chamber 25), and the pump section is provided in the filter tower 41 when the operation of the pump section 2 is stopped. A filter 42 is disposed at a position above the remaining liquid in 2.

  The arrangement configuration of the filter 42 may be any configuration as long as the liquid can be filtered on the flow path between the self-priming chamber 25 and the discharge port 21 and at a position above the self-priming chamber 25. A single plate-like filter may be arranged in the flow path, but preferably, a cylindrical one is arranged in an upright state in the filtration tower 41 as shown in the present embodiment.

  By making the filter 42 into a cylindrical body, the liquid sent into the filtration tower 41 through the self-priming chamber 25 of the pump unit 2 is transmitted from the outside of the filter 42 to the inside of the cylindrical body. It can be filtered to remove impurities. The liquid filtered by being permeated and sent to the inside of the filter 42 is sent to the subsequent process from the discharge port 22 or returned to the tank and circulated. In addition, the permeation | transmission direction of the liquid with respect to the filter 42 is not restricted to the structure (refer FIG. 4) which permeate | transmits from the outer side of a present Example, but the flow path structure which reaches the self-priming chamber 25, the filtration tower 41, and the discharge port 22 Depending on the case, the light may be transmitted from the inside to the outside.

  As the filter material of the filter 42, a publicly known filter material used in this type of filtration device can be used, and a filter appropriately selected according to the type and size of the liquid to be filtered and impurities to be removed is used. it can.

  If the filter 42 is of a cartridge type that can be attached and detached, it is preferable that the exchange work is an extremely simple work of simply replacing the cartridge type filter.

Next, the replacement work of the filter 42 will be described.
When it is necessary to replace the filter 42 such as when it is time to replace the filter 42 or when the filter 42 is replaced with a filter 42 of a different mesh, the operation of the pump unit 2 is first stopped.

  By stopping the operation of the pump unit 2, the liquid in the self-suction chamber filtration device 1 </ b> A is discharged from the discharge port 22, the filter 42, the self-suction chamber 25, the self-suction chamber passage unit 28, the vortex chamber discharge port 27, the suction chamber 23, and the suction port. 21 is backflowed and discharged.

  As a result of the backflow / discharge, the liquid in the self-priming chamber filtration device 1A, the liquid above the suction port 21 and the discharge port 22, that is, the liquid in the filtration tower 41 and the self-priming chamber 25 is emptied. Since the liquid staying or adhering to the eyes or the surface of the filter 42 also flows out, the filter 42 in the filter tower 41 can be taken out and replaced without dripping. Therefore, the filter replacement operation can be performed very easily and safely without polluting the operator and the surroundings of the equipment.

  When replacing the filter 42, it is preferable to confirm that no liquid remains in the filtration tower 41 and the self-priming chamber 25 by a confirmation means such as opening a safety confirmation valve (not shown). If the remaining liquid is accumulated in the filtration tower 41, it is discharged by opening the safety check valve or the like.

  In addition, due to siphon cut during reverse flow, the liquid in the self-priming chamber filtration device 1A is located below the suction port 21 and the discharge port 22, that is, other flow paths such as the suction chamber 23 and the impeller 24. Since the liquid inside remains, the operation can be resumed immediately by simply restarting the pump unit 2 without venting and priming.

Here, the self-priming action during pump operation will be described.
First, when the impeller 24 is rotated, the liquid accumulated in the impeller 24 through the suction chamber 23 and the casing suction port 26 is moved in the outer peripheral direction of the impeller 24 by the centrifugal force generated by the rotation of the impeller 24. Extruded and discharged from the vortex chamber discharge port 27, moves to the self-suction chamber 25 through the self-suction chamber passage portion 28. At this time, the liquid that has been accumulated in the self-priming chamber 25 flows into the impeller 24 through the self-priming circulation hole 29 and is centrifugally generated by the rotation of the impeller 24 together with the liquid from the suction chamber 23 described above. It discharges from the vortex chamber discharge port 27 and moves to the self-priming chamber 25 through the self-priming chamber passage portion 28. Due to the movement of the liquid, the rotating shaft 24B portion of the impeller 24 becomes a high negative pressure, and the air remaining in the suction chamber 23 and the like is separated from the liquid from the suction chamber 23 and the liquid from the self-priming circulation hole 29. The mixture is mixed and discharged from the vortex chamber outlet 27, passes through the self-priming chamber passage portion 28, moves into the filtration tower 41 through the self-priming chamber 25, and is discharged from the outlet 22. The liquid in the self-priming chamber 25 circulates between the suction chamber 23 through the self-priming circulation hole 29, so that the air accumulated in the suction chamber 23 passes through the filtration tower 41 through the self-priming chamber 25. Then, the self-priming is completed by completely discharging from the discharge port 22.

  The pump unit 2, the filtration tower device unit 4, and the drive unit 3 having the above-described configuration may be configured to be linearly arranged in order of the filtration device unit 4, the pump unit 2, and the drive unit 3 from above to below. preferable. According to such a configuration, the lightest weight filtering device part 4 is arranged at the uppermost position, the lightest pump part 2 and the heaviest driving part 3 are arranged at the lowest position. Not only is there a sense of stability, but the linear arrangement from the top to the bottom makes the drive shaft 32 of the motor 31 of the drive unit 3 coincide with the rotational axis of the impeller 24 of the pump unit 2 in the vertical direction. Therefore, it is easy to obtain a stable operation with less blurring during operation.

  Next, a second embodiment of the self-priming filter according to the present invention will be described with reference to FIG.

  The self-priming filter device 1B of the second embodiment shown in FIG. 5 has a separate configuration in which the pump unit 2 and the filter device unit 4 are connected to the filter tower 41 of the filter device unit 4 at the upper part of the pump unit 2. Is.

In the second embodiment, the pump unit 2 is a self-priming pump having a single-component check valve and having an inner valveless configuration. ) And the basic filtration configuration are the same, but a filtration tower 41 which is a single unit configuration is connected and arranged.

The pump unit 2, the as in the first embodiment, there is priming and removal of air during operation resumption known and used self-priming pump type without valveless construction of the check valve is not required, and the drive A vertical pump configuration in which the portion 3 is connected to the lower portion of the pump portion 2 can be adopted.

  Moreover, it is preferable that the pump part 2 is a structure which has a well-known publicly used drive part as a drive part of the structure similar to the drive part 3 of the said 1st Example, or a drive part of this kind of self-priming pump.

  As described above, the filter unit 4 is provided with the filter 42 in the same manner as the filter tower 41 of the filter unit 4 of the first embodiment. Since the filter tower 41 is connected to the upper part of the pump unit 2, the filter 42 is disposed above the remaining liquid in the pump unit 2 when the pump unit 2 is stopped.

  In the second embodiment, the permeation direction of the liquid with respect to the filter 42 is different from the first embodiment in that the permeation direction is from the outer side to the inner side direction. .

  The filtration tower 41 is connected to the pump section 2 by connecting an inlet section 43 to the filtration tower 41 to the discharge port 22 of the pump section 2. The connection may be made through another connector such as the conduit 14 or may be directly connected without using another member such as the conduit 14.

  In the second embodiment, the outlet 44 of the filtration tower 41 corresponds to the discharge port 22 of the first embodiment. Accordingly, the conduit 12 connected to the discharge port 22 in the first embodiment is connected to the outlet portion 44 in the second embodiment.

  In the second embodiment shown in FIG. 5, the first embodiment shown in FIGS. 1 to 3, such as other configurations of the pump unit 2, other configurations such as the shape of the filter 42 and the type of filter medium, and the like. About the structure of the same code | symbol as an example, it abbreviate | omits description as having the same structure.

  According to the self-priming filter device 1B shown in the second embodiment, the filter 42 in the filter tower 41 is taken out and replaced without dripping, like the self-priming filter device 1A shown in the first embodiment. Therefore, the filter replacement work can be performed very easily and safely without polluting the surroundings of the worker and the equipment, and the resumption of the operation is performed by removing the air and priming water only by restarting the pump unit 2. It is possible without. Moreover, since the drive unit 3 is connected to the lower part of the pump unit 2, the installation space is less than that of the horizontal pump configuration, and there is almost no change in the installation space depending on the installation direction. There are few restrictions due to.

Schematic sectional view showing an embodiment of a self-priming filtration device according to the present invention II-II schematic enlarged cross-sectional view of FIG. 2 is a schematic enlarged cross-sectional view taken along the line III-III in FIG. 2 in the configuration below the line II-II in FIG. 1 is a schematic enlarged end view taken along the line IV-IV in FIG. Schematic partial sectional view showing a second embodiment of the self-priming filtration device according to the present invention.

Explanation of symbols

1A Self-priming filter (integrated type)
1B Self-priming filter (separate type)
DESCRIPTION OF SYMBOLS 11 Conduit 12 Conduit 13 Air vent part 14 Conduit 2 Pump part 21 Suction port 22 Discharge port 23 Suction chamber 24 Impeller 24A Magnet 24B Rotating shaft 25 Self-priming chamber 26 Casing suction port 27 Vortex chamber discharge port 28 Self-priming chamber passage part 29 Self-priming circulation hole 3 Drive part 31 Motor 32 Drive shaft 33 Magnet coupling 33A Magnet 34 Partition plate 4 Filtration device part 41 Filtration tower 42 Filter 43 Inlet part 44 Outlet part

Claims (8)

A suction port, a suction chamber, an impeller, a self-priming chamber, and a discharge port are provided in the order from the upstream to the downstream of the flow path, and the suction port and the discharge port are disposed above the suction chamber and the impeller. and the upper position from the discharge port are disposed the self-priming chamber, a pump unit is a self-priming pump valveless construction without check valve,
A drive unit connected to a lower part of the pump unit and serving as a drive source of the pump unit;
A filtration tower disposed on a flow path between the self-priming chamber and the discharge port and above the self-priming chamber, and a residual liquid in the pump section in the filtration tower and when the pump section is stopped A filter unit provided with a filter disposed at a higher position;
A self-priming filtration device characterized by comprising:

The self-priming filter device according to claim 1, wherein the filtering device section is provided at an upper portion of the self-priming chamber. The said filtration apparatus part, the said pump part, and the said drive part are the structures arrange | positioned linearly from the upper direction to the downward direction in order of the filtration apparatus part, the pump part, and the drive part. The self-priming filter device described in 1. The self-priming filter device according to any one of claims 1 to 3, wherein the suction chamber and the self-priming chamber have the same capacity or substantially the same capacity. The self-priming filtration apparatus according to any one of claims 1 to 4, wherein the filtration tower of the filtration apparatus section and the pump section are of an integrated type. The self-priming filtration according to any one of claims 1 to 4, wherein the pump unit and the filtration device unit have a separate configuration in which a filtration tower of the filtration device unit is connected to an upper part of the pump unit. apparatus. The self-priming filter device according to any one of claims 1 to 6, wherein the filter is a cartridge type that can be attached and detached. The self-priming filter device according to any one of claims 1 to 7, wherein a driving system of the pump unit is a magnet coupling system.

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