JP4615940B2 - Water pump mounting structure for water tank filtration device - Google Patents

Description

  The present invention relates to a water pump mounting structure for an aquarium filtration device for breeding goldfish, tropical fish, saltwater fish and the like.

In general, in order to breed and cultivate ornamental fish such as goldfish and tropical fish in the aquarium, the filtration body is supported on the wall surface of the aquarium and connected to the filtration body as a filtration device that filters and purifies the water in the aquarium A water tank filtration device is known in which water in a water tank is forcibly circulated in the filtration body by a water pump to be refluxed in the water tank (see Patent Document 1). .
U.S. Pat. No. 4,512,885.

  By the way, in the conventional filtration device, a water pump is detachably provided at the lower part of the filtration case, but the motor housing is assembled to the impeller assembly assembled to the filtration case with a separate bail member. Not only is the assembly structure complicated, but there is a problem that the assembly work is troublesome.

  The present invention has been made in view of such circumstances, and a water pump can be easily assembled to the bottom wall of the filtration case with a single touch, and the water pump is liquid-tightly and precisely supported on the bottom wall of the filtration case. An object of the present invention is to provide a water pump mounting structure for a novel water tank filtration device.

In order to achieve the above object, the invention of claim 1 is a water pump mounting structure for a filtration device, wherein unpurified water in a water tank is sucked into a filtration chamber, filtered through a filter element, and returned to the water tank. There,
A cylindrical mounting concave portion is provided on the bottom wall of the filtration case, and a cylindrical mounting convex portion formed on the pump body of the water pump is fitted into the mounting concave portion in a liquid-tight manner so as to be rotatable through a plurality of packing rings. A pair of arcuate engagement grooves are formed in the mounting recess in the radial direction at a position away from the fitting portion, and a pair of arcuate engagement protrusions are formed in the radial direction on the mounting projection.
With the mounting convex portion fitted in the mounting concave portion, the pump body is rotated by a predetermined angle with respect to the filtration case to engage the engaging groove and the engaging protrusion with each other,
Furthermore, a bearing portion for rotatably supporting a bearing made of an elastic body fitted to the outer end of the pump shaft protruding in a cantilevered manner from the pump body is formed in the central portion of the mounting recess.

  In order to achieve the above object, the invention according to claim 2 is characterized in that a plurality of annular packing grooves are formed at intervals in the axial direction on the outer peripheral surface of the mounting convex portion of the pump body, When the packing ring is fitted in each of the grooves and the mounting convex portion is fitted into the mounting concave portion, the packing ring is in close contact with the inner peripheral surface of the mounting concave portion.

  According to the invention described in each of the claims, the water pump can be supported on the filtration case in one touch accurately, reliably, and liquid-tightly so as to be detachable. The maintenance becomes easy.

  According to the invention of claim 2, the mounting convex part of the water pump is brought into close contact with the mounting concave part of the filtration case via a plurality of packing rings, and the liquid tightness between them can be greatly enhanced. it can.

  Embodiments of the present invention will be specifically described below based on the embodiments of the present invention illustrated in the accompanying drawings.

  1 is a perspective view when the filtration device is set in a water tank, FIG. 2 is a front view of the filtration device as seen from the arrow 2 in FIG. 1, and FIG. 3 is a plan view of the filtration device as seen from the arrow 3 in FIG. 4 is a plan view of the filtration device taken along line 4-4 in FIG. 3, FIG. 5 is a sectional view taken along line 5-5 in FIG. 2, and FIG. 6 is a sectional view taken along line 6-6 in FIG. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 2, FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 2, and FIG. FIGS. 10 (A), (B), and (C) are diagrams showing an assembly process of the water pump to the filtration case, and FIGS. 11 (A) and (B) are views of 11 (A) in FIG. ) -11 (A) and 11 (B) -11 (B).

  As shown in FIG. 1, the external filtration apparatus according to the present embodiment is of a type that is used by being hung on a water tank V. The filtration main body F that is hung on the wall surface of the water tank V, and the water tank V It is comprised from the water pump P which circulates the inside water in the filtration main body F.

  The filtration body F includes a filtration case 1, a filtration element 15 provided inside the filtration case 15 so as to be insertable / removable, a water absorption part 4, and a water discharge pipe 3.

  The filtration case 1 is formed of a hard synthetic resin material, and is formed in a flat box shape having an entrance / exit 5 opened on an upper surface thereof, and a hook portion 6 having a downward hook shape over the entire width is formed on the front surface thereof. As shown in FIG. 1, the hook portion 6 is integrally formed and can be detachably hung on the upper edge portion of the water tank V. As shown in FIGS. 2 to 4, in the filtration case 1, there is provided a vertical partition wall 7 that is biased to one side in the left-right width direction and partitions the inside of the filtration case 1 left and right. With this partition wall 7, a water storage chamber 8 is formed in the water absorption part 4 on one side in the width direction of the filtration case 1, and a filtration chamber 10 having a larger volume than the water storage chamber 8 is formed on the other side. As shown in FIGS. 4 and 5, the partition wall 7 has a vertically flowing water inlet 11 that communicates the water storage chamber 8 and the filtration chamber 10, and an inlet 9 is formed above the partition wall 7. Opened water of the stored water in the water storage chamber 8 passes through the inflow port 9 and can flow into the filtration chamber 10 without passing through the filter element 15.

  As shown in FIGS. 1, 2 and 4, 5, a recess 2 is formed on one side of the bottom wall of the filtration case 1, and the water pump P is stored in the recess 2. Both the suction port Ps and the discharge port Pd of the water pump P face the lower part of the water storage chamber 8. As shown in FIG. 5, the suction port Ps is connected to the lower end of a first suction pipe 30a passing through the water storage chamber 8, and the second suction pipe is connected to the upper end of the first suction pipe 30a. The base end of 30b is connected. The second suction pipe 30b is curved in an elbow shape, extends out of the filtration case 1 and hangs down in the water tank V, and a strainer 29 is connected to the lower end thereof.

  As shown in FIG. 4, the discharge port Pd of the water pump P is in direct communication with the lower part of the water storage chamber 8. Therefore, according to the operation of the water pump P, the unpurified water in the water tank V is sucked into the first suction pipe 30a through the second suction pipe 30b by the strainer 29 as shown by the arrows a in FIGS. After that, the water is discharged from the discharge port Pd to the water storage chamber 8 and stored therein.

  As clearly shown in FIG. 4, the filtration element 15 and the water discharge pipe 3 are detachably attached in parallel to each other from the upper opening in the filtration chamber 10.

  Further, a skirt-shaped flowing water wall 12 is integrally formed between the one side wall (partition wall) 3 a of the water discharge pipe 3 and the partition wall 7 on the front surface of the filtration chamber 10 of the filtration case 1. As shown in FIG. 1, the water flow wall 12 has a curved shape whose longitudinal section is convex outward, and a substantially horizontal overflow wall 13 is formed on the upper edge of the water flow wall 12. The water overflowing the filtration chamber 10 passes over the overflow wall 13, flows down along the flowing water wall 12, and returns to the water tank V. The filter element 15 in the filter chamber 10 is formed by a rectangular filter plate made of synthetic resin.

  The drainage pipe 3 detachably attached to one side of the filtration case 1 in the left-right direction (left side in FIG. 1) is formed in a rectangular tube shape that gradually tapers downward, and is adjacent to the filtration element 15. The side wall 3a forms a partition wall that separates the filtration chamber 10 and the water discharge pipe 3 in a watertight manner. In addition, an inlet 22 (see FIGS. 4 and 6) is opened at a lower portion of the side wall (partition wall) 3a of the water discharge pipe 3, and the inside of the water discharge pipe 3 communicates with the purification chamber 19 through the inlet 22. The water discharge pipe 3 is integrally formed with a nose portion 23 along the flowing water wall 12 of the filtration case 1 at the upper portion thereof, and a discharge port 24 (see FIGS. 1, 5 and 6) faces downward at the lower end of the nose portion 23. Is open. As shown in FIG. 4, the filtered water in the filtration chamber 10 enters the water discharge pipe 3 through the inlet 22 and is returned to the water tank V through the water discharge port 24.

  The nose portion 23 of the water discharge pipe 3 extends in the vertical direction, and a predetermined distance is provided in the vertical direction between the upper wall 3b of the water discharge pipe 3 and the water discharge port 24 thereof. Is dropped on the water tank V, a head H (see FIG. 5) is formed between the upper wall 3b of the water discharge pipe 3 and the water outlet 24, and the siphon action by the head H purifies the inside of the filtration body F. The water is returned to the water tank V. Further, according to the operation of the water pump P, the unpurified water in the water tank V is stored in the water storage chamber 8.

  Below, the attachment structure to the filtration case 1 of the water pump P is demonstrated.

  As shown in FIG. 4, a recess 2 is formed below the water storage chamber 8 of the filtration case 1, and the water pump P is accommodated in the recess 2. The bottom wall of the water storage chamber 8 is formed with a hollow cylindrical mounting recess 35 having an upper wall for opening the water pump P so as to be detachable. As shown in FIG. 9, a suction side communication port 36 that opens the suction port Ps of the water pump P to the first suction pipe 30 a is opened on the upper surface of the mounting recess 35, and the water pump is formed on the side surface thereof. A discharge-side communication port 37 that allows the P discharge port Pd to communicate with the water storage chamber 8 is opened.

In addition, a pair of arc-shaped engagement grooves 38, 38 constituting a bayonet female are integrally formed in the side surface of the mounting recess 35 in the radial direction, and at the diagonal ends of these engagement grooves 38, 38, The inlets 38i, 38i into which engaging protrusions (formed on a mounting protrusion 41 described later of the water pump P) that constitute a male bayonet described later are inserted are formed. Moreover, the bearing part 39 which receives the pump shaft 45 of the water pump P is formed in the upper surface center part of the attachment recessed part 35. Moreover, as shown in FIG. 9, the water pump P is a motor (not shown). A hollow cylindrical mounting projection 41 is formed on one surface of a square block-shaped pump body 40 to be accommodated. Two annular packing grooves 42, 42 are formed on the outer peripheral surface of the mounting convex portion 41, and packing rings 43, 43 made of an elastic material such as rubber are fitted into the packing grooves 42, 42, respectively. The The pump shaft 45 of the water pump P is extended upward in the center of the pump body 40, and the pump blade 46 accommodated in the mounting recess 35 is fixed. The pump shaft 45 extends to the outside through the mounting convex portion 41, and a cap-shaped bearing 47 made of an elastic body such as rubber is integrally fitted to the outer end thereof.

  The attachment recess 35 on the filtration case 1 side and the attachment protrusion 41 on the water pump P side are provided with engagement means E that detachably and integrally engages them. This engagement means E is a pair of arcuate engagement grooves (female members of bayonet) 38, 38 formed in the radial direction of the inner peripheral surface of the mounting recess 35 and the radial direction of the outer peripheral surface of the mounting convex portion 41. A pair of arcuate engagement protrusions (male members of bayonet) 48, 48 are formed, and engagement protrusions 48 are formed at inlet ends 38i, 38i formed at one end and the other end of the pair of engagement grooves 38, 38. 48, the engaging protrusions 48, 48 can be engaged with the engaging grooves 38, 38 by inserting the engaging protrusions 48, 48 into the engaging grooves 38, 38, respectively. .

  Next, a procedure for assembling the water pump P to the bottom wall of the filtration case 1 will be described with reference to FIGS.

  (1) As shown in FIG. 10 (A), the mounting convex portion 41 of the water pump P is opposed to the mounting concave portion 35 on the bottom wall of the filtration case 1. At this time, the phase of the water pump P is shifted by about 90 ° around the pump shaft 45 with respect to the regular assembly position.

  (2) Next, when the water pump P is pressed toward the filtration case 1, the mounting convex portion 41 is fitted into the mounting concave portion 35 as shown in FIGS. 10 (B) and 11 (A). . In this fitted state, the two packing rings 43, 43 seal the space between the mounting recess 35 and the mounting projection 41 in a liquid-tight manner, and frictionally support the water pump P on the filtration case 1.

(3) Next, as shown in FIGS. 10 (C) and 11 (B), if the water pump P is rotated about 90 ° around the pump shaft 45 with respect to the filtration case 1, a bayonet is constructed. The pair of engaging protrusions 48 and 48 and the pair of engaging grooves 38 and 38 are engaged with each other to support the water pump P firmly and liquid-tightly in the recess 2 of the bottom wall of the filtration case 1. it is possible.

  The operation of assembling the water pump P to the filtration case 1 in (1) to (3) can be performed by one touch with the operator holding the pump body 40 of the water pump P.

  In the figure, 32 is a pebble such as a large coral laid on the bottom of the water tank V, 33 is a support piece made of an elastic material that can be put in and out of the lower part of the filtration case 1, and its tip is a water tank. The vibration of the filtration case 1 can be buffered and absorbed by being in contact with the wall surface of V, and the posture of the filtration case 1 is controlled.

  In using this filtration device, as shown in FIG. 1, the filtration body 1 provided with the filtration element 15 and the water discharge pipe 3 in the filtration case 1 is hung on the wall surface of the water tank V.

  Here, when the water pump P is operated, unpurified water in the water tank V is sucked up by the water pump P, and sucked into the water pump P through the strainer 29, the first and second suction pipes 30b, 30a. (FIG. 5, arrow a) and pumped to the water storage chamber 8. The water that has entered the water storage chamber 8 flows into the filtration chamber 10 through the water flow port 11 of the partition wall 7 (FIG. 4, arrow b), and gradually increases its water level. Overflows the upper edge inlet 9 and flows to the filtration chamber 10 formed at the center of the filtration case 1 (arrow b ′ in FIG. 4).

As described above, the water flowing into the filtration chamber 10 is
(1) As shown by the arrow e in FIGS. 1 and 3, the overflow wall 13 overflows without passing through the filter element 15, that is, without being filtered, and is returned to the water tank V through the flowing water wall 12. A first stream of water,
(2) By receiving the suction force due to the siphon action generated by the head H through the inlet 22 of the discharge pipe 3, as shown by arrows c and d in FIG. After entering the chamber 18, filtered through the filter element 15, flows into the purification chamber 19, flows downward through the chamber 19, and is led to the water discharge pipe 3 through the inlet 22. Divided into flowing water.

  By the way, in the above (2), the purified second flow of water that has flowed into the discharge pipe 3 enters the water tank V by the siphon action due to the drop H of the nose portion 23 as shown by the arrow d in FIG. Returned. On the other hand, in the above (1), the water of the first flow overflowing the overflow wall 13 from the filtration chamber 10 is not filtered as shown in the arrow e in FIG. Returned directly in. Therefore, a part of the water flowing into the filtration chamber 10 from the water storage chamber 8 (second flow water) is filtered through the filter element 15, and the remaining part (first flow water) is filtered. Since the water flowing back into the water tank V without passing through the element 15 and passing through the filtration element 15 has a larger flow resistance than the water not passing through it, the water passing through the filtration element 15 has its flow rate and flow velocity. As a result, clogging of the filter element 15 is reduced, and the propagation of aerobic microorganisms in the filter element 15 is promoted, so that the water filtering action by the filter element 15 and the aerobic microorganisms are increased. Both organic purification actions of water can be enhanced.

  As mentioned above, although the Example of this invention was described, this invention is not limited to the Example, A various Example is possible within the scope of the present invention.

  For example, the present invention can be applied to a filtering device that does not depend on the siphon action and filters the water fed into the filter chamber by the water pump by the filter element. In the embodiment, the water pump is attached. Although two packing rings are provided on the outer periphery of the convex portion, three or more packing rings may be provided on the mounting convex portion.

Perspective view when filtration device is set in water tank 1 is a front view of the filtration device as viewed in the direction of arrow 2 in FIG. FIG. 2 is a plan view of the filtration device as viewed in the direction of arrow 3 in FIG. Plan view of the filtration device along line 4-4 in FIG. Sectional view along line 5-5 in FIG. Sectional view along line 6-6 in FIG. Sectional view along line 7-7 in FIG. Sectional view along line 8-8 in FIG. Disassembled perspective view of filter case mounting recess and water pump mounting projection (A) (B) and (C) are diagrams showing an assembly process diagram of a water pump to a filtration case. (A) And (B) is sectional drawing which follows 11 (A) -11 (A) and 11 (B) -11 (B) of FIG.

10 ............ Filtering chamber 15 ............ Filtering element 35 ............ Mounting recess 38 ............ engagement groove 39 ............ Bearing part 40 ............ Pump body 41 …………… Installation convex part 42 ……………… Packing groove 43 ……………… Packing ring 45 ……………… Pump shaft 47 …………… Bearing 48 …………… engagement protrusion V ... ………… Aquarium

Claims (2)

It is a water pump mounting structure for a filtration device in which unpurified water in the water tank (V) is sucked into the filtration chamber (10), filtered through the filter element (15), and refluxed into the water tank (V). And
Filtration cylindrical mounting recesses (35) provided in the bottom wall of the over-case (1), the cylindrical attachment member formed in the pump body (40) of the water pump (P) to the mounting recess (35) and (41) A pair of arcuate engagement grooves (38) are fitted in the mounting recess (35) at a position remote from the fitting portions so as to be pivotable and fluid-tight through a plurality of packing rings (43). Is formed in the radial direction on the mounting convex portion (41), and a pair of arcuate engagement protrusions (48) are formed in the radial direction.
The engagement groove (38) and the engagement protrusion are obtained by rotating the pump body (40) by a predetermined angle with respect to the filtration case (1) in a state where the attachment protrusion (41) is fitted in the attachment recess (35). (48) with each other,
Further, a bearing (47) made of an elastic body fitted on the outer end of the pump shaft (45) protruding in a cantilever manner from the pump body (40) is rotatably supported at the center of the mounting recess (35). A water pump mounting structure for a water tank filtration device, wherein a bearing portion (39) is formed.   A plurality of annular packing grooves (42) are formed on the outer peripheral surface of the mounting projection (41) of the pump body (40) at intervals in the axial direction, and packings are respectively provided in the packing grooves (42). When the ring (43) is fitted and the mounting projection (41) is fitted into the mounting recess (35), the packing ring (43) is brought into close contact with the inner peripheral surface of the mounting recess (35). The water pump mounting structure for an aquarium filtration device according to claim 1, wherein

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