JP2008231724A - Pump and base used therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To install two submerged pumps and pipe system for drainage with less labor in a water collecting gully d1 of square shape with a side length of approximately 600-900 mm in plan view, obtain accurate operations thereof, and easily repair the troubles. <P>SOLUTION: A strut member 2 is fixedly secured to a base plate 1 supported on an installation surface through base leg parts 5. Through hole is formed at two positions antisymmetric to each other with respect to the strut member 2. The lower ends of the submerged pumps 3A, 3B are inserted into the through holes from the upper side, and the submerged pumps are vertically locked. An upstream side discharge pipe 6 allowing the water discharged from the discharge hole 3b of each of the submerged pumps 3A, 3B to flow therein is connected to each of the pumps. A union joint 8 is fitted to the first horizontal part 6B of each upstream side discharge pipe 6. The any parts of the discharge pipes 6, 12, 15 on the downstream side of the union joints 8 are secured to the strut member 12. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is used when draining water accumulated in a low place such as underground, and in particular, a submersible pump unit that is useful for draining rainwater and sewage collected in a water collecting tank to another location, And it is related with the foundation used for this.

  In general, there is a water collecting basin in the basement. In order to drain the water accumulated in the water collecting basin to the ground, a submersible pump is installed in the water collecting basin and an appropriate drainage pipe is provided. A system is being formed. In such a drainage system, two submersible pumps are installed in the catchment basin, and when the speed of water collection into the catchment basin exceeds the drainage capacity of one submersible pump, When a submersible pump breaks down, the other submersible pump is operated to drain water.

  In general, the inner space of a water collecting basin that is commercially available is, for example, a quadrilateral having a side length of about 600 mm to 900 mm in plan view. When the submersible pump is installed and the drainage piping system is further formed, the following problem occurs.In other words, since sufficient work space cannot be secured, the labor for installation is greatly increased. In addition, it takes time to maintain, inspect and maintain the equipment and repair the failure, and it may not be possible to secure a sufficient working space for the float to start and stop the submersible pump. Furthermore, friction between the members due to vibration of the submersible pump may damage the bottom surface of the catchment basin, loosen the pipe connection screw parts, or cause water leakage.

In addition, the following patent documents 1 and 2 etc. exist as well-known literature which shows a technical level.
JP 2005-127119 A JP-A-8-23799

  The present invention provides a drainage facility equipped with two submersible pumps, drainage piping systems, etc., even in the inside of a drainage basin or the like that is a square having a side length of about 600 mm to 900 mm in plan view. Underwater that can be installed with little effort, and that a working space such as a float can be sufficiently secured to obtain an accurate operation, and that maintenance and repairs can be easily performed. In addition to providing a pump unit, it can contribute to the realization of the submersible pump unit and can further prevent damage to the bottom surface of the catchment basin and prevent loosening of pipe connection screw parts and leakage due to this. An object of the present invention is to provide a base used for a submersible pump unit.

  In order to achieve the above object, the submersible pump unit according to the first invention of the present application is, as described in claim 1, a substantially central portion in plan view of the base plate supported horizontally on the installation surface via the base legs. A straight support member is fixed to the base plate, and pump holding through holes are formed at two locations on the horizontal surface of the base plate which are arranged in reverse symmetry with respect to the support member, and each of the pump holding through holes is provided. Since the lower part of the submersible pump is inserted from above, the submerged pump is stably supported in a standing posture by the base plate, and the water discharged from the water outlet of each submerged pump passes independently. And an upstream discharge pipe formed in this order from the upstream side to the first standing part and the first horizontal part, and an arbitrary position in the longitudinal direction of the first horizontal part of each of the upstream discharge pipes The union is provided, it is characterized in structure in which any portion of the discharge pipe system which forms the downstream side of the union joint is fixed to the strut member.

The present invention can be embodied as follows.
That is, as described in claim 2, a check valve is provided at an arbitrary position in the lengthwise direction of the first upright portion of each upstream discharge pipe as described above, and downstream of the union joint of each upstream discharge pipe. It is assumed that a three-way valve is provided on the side.

  According to a third aspect of the present invention, the downstream discharge pipe is extended from each of the upstream discharge pipes to the downstream side, and the second standing part and the second horizontal part are formed in this order from the upstream side in the middle of the length. Two pipe systems comprising the upstream discharge pipe and the downstream discharge pipe corresponding to each of the submersible pumps are formed in a symmetrical manner with respect to the column member, and each of the submersible pumps The two downstream discharge pipes corresponding to the above are connected in a straight line by a merged discharge pipe made of a T-shaped joint pipe, and at this time, one connection port of the joint pipe serves as a merged water discharge port portion to form the column member It is set as the structure located just above.

  According to a fourth aspect of the present invention, the first horizontal portion, the second upright portion, and the second horizontal portion corresponding to each of the submersible pumps are arranged in a laterally U shape in a side view.

  According to a fifth aspect of the present invention, each of the submersible pumps includes a handle portion on the upper surface, and has a configuration in which no other member is present immediately above and near the handle portion.

  According to a sixth aspect of the present invention, the three-way valve is formed with a female screw formed in a connection port that forms a water inlet / outlet, and the discharge screw member communicated with the female screw and the connection port. The receiving port is coupled via a straight coupling pipe having a uniform diameter made of a resin material, and the straight coupling pipe forms a male screw to be screwed into the female screw of the connection port at one end portion of the outer peripheral surface. In addition, the other end of the outer peripheral surface is inserted into the receiving port and coupled with an adhesive.

  Next, the base used in the submersible pump unit according to the second invention of the present application is, as described in claim 7, a base leg provided so as to protrude downward from a plurality of appropriately spaced locations on the outer periphery of the lower surface. And a base plate that is horizontally placed on the horizontal installation surface by the base leg, and a straight column member is fixed in an upright manner at a substantially central position in plan view of the base plate. The lower portion protrudes downward from the lower surface side of the base plate by the same length as the base leg portion, and the pump holding transparent portion is provided at each of the two locations on the upper surface of the base plate that are arranged in reverse symmetry with respect to the support member. When the lower part of the submersible pump is inserted through the pump holding through hole from above, the submersible pump is restricted from moving in the horizontal direction and supported by the upper surface of the base plate. The is characterized in being stably retained.

  The present invention may be embodied as follows. That is, as described in claim 8, the lower end portion of the base leg and the lower end portion of the support member are covered with a rubber material. The configuration.

The effects of the present invention as described above will be described separately for each invention as follows.
(1) The invention according to any one of claims 1 to 6 a: In a relatively narrow space such as the inner side of a water catchment made into a quadrangle having a side length of about 600 mm to 900 mm in plan view. Even if there are two submersible pumps, check valves, union joints, sleeve valves, floats, electrical switches, and drainage pipes for drainage as a compact unit on the installation surface such as the bottom of a water collecting tank It is possible to install it with little effort. Specifically, it is only necessary to place a drainage unit pre-assembled at a factory etc. on the site installation surface and connect the discharge pipe system of the unit to the site drainage system. Installation of drainage facilities will be completed.

  b: A submersible pump that can sufficiently secure a working space such as a float even when a drainage facility is formed inside a drainage basin having a side length of about 600 mm to 900 mm in plan view. Will operate properly.

  c: An upstream discharge pipe in which the first standing part and the first horizontal part are formed in this order from the upstream side is provided, and a union joint is provided at an arbitrary position in the length direction of the first horizontal part of each upstream discharge pipe. In addition, since any part of the discharge pipe system that is downstream from the union joint is fixed to the support member, the joint part by the union joint is in a state in which the pipe member downstream from the union joint does not fall off. In this separated state, it is possible to pull up the submersible pump and its conjoint parts directly above by applying a pulling force by the operator to the same part as the submersible pump. Even if a drainage facility is installed in the catchment, the submersible pump and its parts can be easily removed to the outside of the catchment so that maintenance, inspection, maintenance and repair can be performed in a wide area. It can be carried out.

  d: When pulling up or down the submersible pump and its contiguous parts, the support member becomes a guide member, and if necessary, its posture can be controlled by bringing the submersible pump into contact with the support member and the base plate. Even when it cannot be seen with contaminated water, the support member can be a guideline for recognizing the position of the through hole for holding the pump, and the submersible pump and its parts can be returned to the through hole for holding the pump without taking time.

  e: Pump holding through holes are formed at two locations on the horizontal plane of the base plate, and the lower part of the submersible pump is inserted from above into each of the pump holding through holes, so that the submersible pump is stable in a standing posture on the base plate. Therefore, stability during operation of the submersible pump is achieved, and reaction at the start of the submersible pump is effectively regulated.

  f: Since the through holes for holding the pump are formed in two places on the horizontal plane of the base plate which are arranged in reverse symmetry with respect to the support member, the other parts of the drainage equipment can be the target placement structure, and the drainage equipment. This makes it possible to achieve a good overall weight balance and to share parts.

  g: Since the arbitrary position of the discharge pipe system on the downstream side of the union joint is fixed to the support member, the support member prevents the vibration of the discharge pipe system caused by the reaction that occurs when the submersible pump is started. In addition, the submersible pump with respect to the base plate can be held in a fixed state without fixing the submersible pump to the base plate via a bolt or the like, and the rigidity of the entire unit can be improved.

(2) Invention of Claim 2 a: In the case where two submersible pumps are operated alternately because a check valve is provided at an arbitrary position in the length direction of the first upright portion of each upstream discharge pipe The positive pressure of water sent out from the discharge port of the operating submersible pump came to close the check valve corresponding to the submersible pump on the non-operating side, and therefore was sent out from the discharge port of the operating submersible pump. It is possible to prevent the water from returning to the water suction part of the operating submersible pump through the non-operating submersible pump, and to check each time when the operating submersible pump is stopped after draining the water. The valve is closed by the pressure of the water in the discharge pipe system, so that the water in the discharge pipe system can be prevented from returning through each submersible pump.

  b: Since a release valve is provided on the downstream side of the union joint of each upstream discharge pipe, the release valve is closed when the connection point of the union joint is separated, so that the release valve is closed from the connection point of the separated union joint. It is possible to prevent the water in the discharge pipe system downstream from the valve from leaking out, and to change the flow rate of water sent from each submersible pump into the discharge pipe system by changing the opening degree of the sleeve valve. Can be adjusted.

  c: Check valves and sleeve valves are necessary for drainage facilities, but since they are incorporated as part of the unit structure, they effectively contribute to simplifying the construction of drainage facilities at the site. To do.

(3) Invention of Claim 3 a: The downstream discharge pipe which is extended from each of the upstream discharge pipes to the downstream side and has the second standing part and the second horizontal part formed in this order from the upstream side in the middle of the length. Each of the submersible pumps, and the two pipe systems composed of the upstream discharge pipe and the downstream discharge pipe corresponding to each submersible pump are formed in a symmetrical manner with respect to the support member. Each of the two pipe systems consisting of an upstream discharge pipe and a downstream discharge pipe corresponding to the above is formed by using the same check valve, union joint, sleeve valve, straight pipe, 90 degree elbow, etc. Sharing of members is promoted and the weight balance of the entire unit structure is improved.

  b: Two downstream discharge pipes corresponding to each submersible pump are connected in a straight line by a merging discharge pipe composed of a T-shaped joint pipe, and one connection port of the joint pipe is formed as a merging water discharge port. Since the structure is located almost directly above, the entire unit structure can be formed in a completely reverse symmetry with respect to the support member, and in particular, the weight balance can be improved.

  c: A configuration in which no other member is present immediately above and in the vicinity of each submersible pump can be provided, and the submersible pump can be conveniently removed from the base plate.

(4) Invention of Claim 4 Since the 1st horizontal part, the 2nd standing part, and the 2nd horizontal part corresponding to each of a submersible pump are arranged in the transverse U character by side view, a union joint and a lease Even when the valve is provided, the upstream discharge pipe and the downstream discharge pipe can be arranged in a compact manner, and the entire unit structure can be made compact.

(5) Invention of Claim 5 When each submersible pump is pulled out from the base plate, it becomes easy to carry out the operation of pulling up and down by hanging a suspension rope on the handle portion, and maintenance of the submersible pump and its contiguous members can be performed. Repair and the like can be easily performed.

(6) Invention of Claim 6 By using a straight coupling pipe, the connection port which forms the water inlet / outlet of the sleeve valve and the receiving port of the discharge pipe member communicated with the connection port almost come into contact with each other. Can be coupled in a state of being close to each other, and the overall length of the first horizontal portion can be shortened, contributing to the compactness of the entire unit structure.

(7) Invention of Claim 7 a: Contributes in realizing the submersible pump unit according to any one of claims 1 to 6.

  b: Since the base leg portion is provided so as to protrude downward from a plurality of positions that are appropriately separated from the outer peripheral portion of the lower surface, and the base plate is provided horizontally on the horizontal installation surface by the base leg portion. The water accumulated on the stationary surface supporting the base leg can flow into the lower side of the base plate, and the water is smoothly sucked into the water suction surface of the submersible pump inserted into the through hole for holding the pump. Will be.

  c: A straight support member is fixed upright at a substantially central position in plan view of the base plate, and the support member protrudes downward from the lower surface side of the base plate by the same length as the base leg. Therefore, even if two pump holding through holes are formed in the base plate and a relatively heavy submersible pump is inserted into each of the pump holding through holes and the weight of the submersible pump acts on the base plate, the base plate is The lower part of the member and the base leg are firmly supported. As a result, even if the base plate is a simple flat plate without a reinforcing member, its thickness can be reduced and lightened. It is.

  d: In the configuration in which when the lower part of the submersible pump is inserted from above into each pump holding through hole, the submersible pump is regulated to move in the horizontal direction and is supported on the upper surface of the base plate to stably hold the standing posture. Therefore, even if the coupling part of the union joint is separated, it is in a stable and independent state.Therefore, under the condition where the coupling part of the union joint is separated, the process of removing the submersible pump from the base plate or returning it to the original position is performed. It becomes easier to do.

(8) Invention of Claim 8 Since it is the structure which covered the lower end part of the base leg part, and the lower end part of the support | pillar member with the rubber material, the installation which supported the lower end part of the base leg part and the lower end part of the support | pillar member The rubber material prevents damage to the surface (such as the bottom surface of the catchment), and the vibration of each part of the unit structure due to the operation of the submersible pump is attenuated by the rubber material. Loose parts and water leakage due to this are prevented.

Hereinafter, a specific embodiment of the submersible pump unit according to the present invention will be described.
1 is a front view of the submersible pump unit, FIG. 2 is a side view of the submersible pump unit, FIG. 3 is a plan view of the submersible pump unit, FIG. 4 is a bottom view of the submersible pump unit, and FIG. It is a side view which shows the straight coupling pipe | tube etc. which are used with a unit.

  In these drawings, reference numeral 1 denotes a base plate made of a horizontally arranged metal plate (for example, a stainless steel plate), and reference numeral 2 denotes a metal rod (for example, vertically fixed to a substantially central portion in plan view of the base plate 1. It is a straight column member made of a stainless steel tube. On the base plate 1, two submersible pumps 3A and 3B are placed.

  The details of each part will be described. Specifically, the base plate 1 is a simple flat plate that is quadrangular in plan view, and the size of the plan view has a side length of about 400 mm to 500 mm. The length of one side is about 300 mm to 400 mm, and in order to hold each of the submersible pumps 3A and 3B in an inserted and upright position on the horizontal plane, the column member 2 is used as a reference. Pump holding through-holes 4 and 4 as shown in FIG.

  Each of the pump holding through holes 4 formed at the two locations includes a main body casing lower insertion hole 4a, a water discharge outlet lower insertion hole 4b, and an interference avoidance hole 4c. At this time, the main body main casing lower insertion hole 4a has a relatively large through-hole portion b1 having a substantially circular cross-section through which the lower portion a1 of the main body main casing 3a of the submersible pump 3A or 3B is inserted, and the main body main casing 3a. Two pump legs a2 and a2 provided in the lower part a1 so as to protrude downward are provided with two notch portions b2 and b2 that are individually engaged, and a water discharge port lower insertion hole 4b is a through-hole portion b3 that is inserted through one pump leg portion a3 provided in a downward projecting shape below the water discharge port 3b of the submersible pump 3A or 3B, and has a circular cross-sectional shape in plan view. The rib a4 formed in the lower part of the discharge port 3b is provided with a notch b4, and the interference avoidance hole 4c avoids interference with the relatively small bottom projection a5 of the submersible pump 3A or 3B. For The plan view cross-section are made circular.

  Base legs 5 for supporting the base plate 1 are provided at each of the four corners of the outer peripheral portion of the lower surface of the base plate 1. Each of the base leg portions 5 is attached so as to cover the whole (or at least the lower end surface) of the lower surface of the metal bar member 5a that protrudes about 35 mm to 40 mm in length downward from the lower surface of the base plate 1. The rubber material 5b.

  The column member 2 has a length of about 550 mm to 650 mm, and the lower portion 2a is inserted through the base plate 1 through a through hole (not shown) and protrudes to the lower side of the base plate 1 by the same length as the metal rod member 5a. In the middle of the length, the rubber material is welded to the base plate 1 so that the lower portion of the base plate 1 covers the entire lower surface (or at least the lower end surface) in the same manner as the base leg 5. 2b is attached.

  The two submersible pumps 3A and 3B have the same size and shape. Each submersible pump 3A and 3B has a motor inside the main body main casing 3a and a lower part of the main body main casing 3a. A pump portion driven by a motor is provided, and the water discharge passage portion 3c is projected laterally outward from the outer peripheral portion in the middle of the lower part of the main body main casing 3a, and at the tip of the water discharge passage portion 3c. In addition to the above-described water discharge port 3b being formed upward, the pump legs a2 and a3 described above are formed on the lower surface a1 of the main body main casing 3a and the lower surface of the front portion of the water discharge passage 3c. A water suction surface portion 3d having a number of water suction holes is formed on the lower surface of the main body main casing 3a, and a handle portion 3e for lifting the submersible pumps 3A and 3B is formed on the upper surface of the main body main casing 3a. It has been made with those.

  At this time, the total height of the submersible pumps 3A and 3B is about 370 mm to 400 mm, the diameter of the water discharge port 3b is about 40 mm to 50 mm, and the total weight of the submersible pumps 3A and 3B is about 9 kg to 12 kg. The

  The submersible pumps 3A, 3B are lowered from directly above the corresponding pump holding through holes 4 so that the respective parts a1, a2, a3, a4, a5 are inserted into the main main casing lower insertion holes 4a of the pump holding through holes 4; The water discharge port lower insertion hole 4b and the interference avoidance hole 4c are densely inserted, and the lowering of the submersible pumps 3A and 3B during the insertion is such that the lower surface of the water discharge passage portion 3c is placed on the upper surface of the base plate 1. The submersible pumps 3A and 3B are engaged with the base plate 1, and after that, the submersible pumps 3A and 3B are stably supported on the upper surface of the base plate 1 and held in a vertical state. The In the locked state, the lowermost positions of the submersible pumps 3A and 3B are positioned slightly above the lower ends of the base legs 5, and specifically, for example, the installation surfaces on which the base legs 5 are supported. The water suction part surface 3d is positioned below the base plate 1 and above the lower end of the base leg part 5.

  Two upstream discharge pipes 6 and 6 in which water discharged from the water discharge port 3b of each of the submersible pumps 3A and 3B passes through the first standing part 6A and the first horizontal part 6B in this order are column members. 2 is provided so as to have an inversely symmetrical arrangement with reference to 2.

  Each first upright portion 6A is provided with a check valve 7 at an arbitrary position in the length direction thereof, and each first horizontal portion 6B is provided with a union joint 8 in the middle of the length direction thereof. At the same time, a three-way valve 9 is installed on the downstream side of the union joint 8. Here, the union joint 8 is a joint that can be joined or separated by simply rotating the joint itself without rotating the pipe at the time of connection / separation. The union joint upstream pipe portion 8s and the union And a downstream pipe portion 8b for joints, and these pipe portions 8a and 8b are coupled via a cap nut-like union nut 8c.

  More specifically, the first upright portion 6A includes a straight pipe 6a made of vinyl chloride material, a check valve 7 having a casing made of vinyl chloride material, and an upstream pipe portion for a union joint made of vinyl chloride material. The straight pipe 6a has an upstream end fitted into a socket 6b screwed to the corresponding water discharge port 3b and connected with an adhesive, and the downstream end is connected to the check valve 7a. The check valve 7 is provided with a swing valve body on the inside, from the lower side (water inlet part 7a) to the upper side (water outlet part 7b). Circulates water, but does not circulate in the opposite direction. The upstream end of the union joint upstream pipe section 8a and the water outlet section 7b of the check valve 7 are made of a short polyvinyl chloride pipe 6c. Each corresponding end is fitted and connected with adhesive. To have. At this time, the check valve 7 is opened by removing the cap nut-shaped portion 7c forming the casing from the male screw portion of the water inlet portion 7a.

  The first horizontal portion 6B includes a joint portion of a union joint 8 made of a vinyl chloride material, a downstream pipe portion 8b for the union joint, and a male screw at the downstream end of the downstream pipe portion 8b for the union joint. A straight joint pipe 10 made of a vinyl chloride material in which a male screw at the downstream end is screwed into a female screw of a water outlet side connection port 9b of the three-way valve 9 (FIG. 5). Reference) and the upstream half of the 90-degree elbow 11 in which the downstream end of the straight coupling pipe 10 is fitted into the upstream end receiving port 11a and connected with an adhesive. At this time, the straight coupling tube 10 is not a commercial product and is specially manufactured.

  Two downstream discharge pipes 12, 12 extending from the downstream end of each first horizontal portion 6 </ b> B to the downstream side are formed. These two downstream discharge pipes 12 and 12 are also provided so as to have an inversely symmetrical arrangement with reference to the column member 2, similarly to the two upstream discharge pipes 6 and 6 described above.

  Each downstream discharge pipe 12 includes a second upright portion 12A extended from the downstream end of the first horizontal portion 6B and a second horizontal portion 12B extended from the downstream end of the second upright portion 12A. At this time, the second upright portion 12A includes an outlet portion of the 90-degree elbow 11, a straight coupling pipe 13 made of a vinyl chloride material that has an upstream end fitted into the outlet portion and connected with an adhesive, and the straight shape The second horizontal portion 12B includes an outlet portion of the 90 ° elbow 14 and an outlet portion of the 90 ° elbow 14 which is fitted into the downstream end portion of the coupling pipe 13 and connected by an adhesive. And a horizontal straight pipe 12a made of a vinyl chloride material fitted in the upstream end portion and connected by an adhesive.

  At this time, the first horizontal portion 6B, the second upright portion 12A, and the second horizontal portion 12B corresponding to the submersible pumps 3A, 3B are arranged in a lateral U-shape as shown in FIG. The part 6B is arranged in parallel to the long side of the base plate 1 so as not to protrude outward from the base plate 1, and the second horizontal part 12B is arranged directly above the diagonal line of the base plate 1.

The two downstream discharge pipes 12 and 12 are connected by a merged discharge pipe 15 forming a T-shaped joint pipe, and the combined discharge pipe 15 is disposed immediately above the diagonal line of the base plate 1 in the same manner as the second horizontal portion 12B. In addition, a merged water discharge port 15 a directed upward is provided at a position almost directly above the column member 2. The combined water discharge port 15a serves as a receiving port, and as shown in FIG. 7, the upstream end portion of the drain pipe system 16 extending from the receiving port is fitted and connected with an adhesive.
At this time, no other member is present directly above and near the handle portion 3e of each of the submersible pumps 3A and 3B, and the combined water discharge port portion 15a is provided from the installation surface where the base leg portion 5 is supported. The height to the upper end is about 700 mm to 800 mm.

  The submersible pumps 3A and 3B, the upstream discharge pipe 6 and the downstream discharge pipe 12 need to be fixed so as not to move upward with respect to the base plate 1, and in order to meet this need, the downstream side of the union joint 8. Any one of the first horizontal portions 6B forming the first horizontal portion 6B, any one of the downstream discharge pipes 12 extending the first horizontal portion 6B downstream, or both of these arbitrary portions are fixed to the column member 2. It becomes the composition made to do.

  In the illustrated example, the merging / discharging pipe 15 is supported and fixed to the upper part of the column member 2 via an appropriate pipe fixing means 2c. At this time, the pipe fixing means 17 fixes the horizontal pipe receiving member c1 to the support member 2 via the horizontally arranged U bolts c2 and vertically arranges the confluence discharge pipe 15 supported on the pipe receiving member c1. The U-bolt c3 is fixed to the tube receiving member c1.

In the vicinity of the outer side of each submersible pump 3A, 3B, a support rod member 17 is fixed vertically to the corresponding submersible pump 3A, 3B via a coupler. Electric switches 18a, 18b, and 18c are fixed to the support rod member 17 fixed to one submersible pump 3A at two locations near the upper and lower ends and approximately at the center of the length so that the height position can be adjusted. In addition, an arm member 19 is extended from each of the electric switches 18a, 18b, 18c, and one float 20a, 20b, 20c is fixed to the tip of each arm member 19, and each float 20a, 20b, 20c is fixed. When the arm member 19 is swung by the buoyant force acting on the electric switch 18a, 18b, 18c, the corresponding electrical switch 18a, 18b, 18c is operated. On the support rod member 17 fixed to the other submersible pump 3B, electric switches 18a, 18b, 18c are fixed to the two positions near the upper and lower ends, respectively, so that the height position can be adjusted, and the electric switches 18d, 18e Arm members 19 extend from the respective ones, and one float 20d, 20e is fixed to the tip of each arm member 19, and buoyancy acting on each float 20d, 20e causes the arm member 19 to oscillate. Corresponding electrical switches 18d and 18e are connected and disconnected.
The overall weight of the submersible pump unit formed as described above is about 35 kg or less.

Next, actual installation examples of the above-described submersible pump unit according to the present invention will be described with reference to FIGS.
Here, FIG. 6 shows the catchment basin, the submersible pump unit, etc., A is a plan view of the catchment basin, and B is a plan view showing a state where the submersible pump unit is installed in the catchment basin. FIG. 7 shows a state in which the submersible pump unit is installed in a water collecting tank. A is a cross-sectional view showing A1-A1 portion in FIG. 6A, and B is B1-B1 portion in FIG. 6A. FIG. 8 is a cross-sectional view, and FIG. 8 is an explanatory view showing a drainage system in which the submersible pump unit and its control device are installed. In these drawings, the same reference numerals are given to the parts described above.

  Under the condition that the submersible pump unit according to the present invention is transported to the installation location of the catchment d1 shown in FIG. 6 provided in the basement and the lid m covering the manhole of the catchment d1 is removed, The pump unit should be suspended through the manhole.

  At this time, for example, a suspension rope having a length of about 1 m is connected to each of the grip portions 3e and 3e of the submersible pumps 3A and 3B, and each of the two ropes is held by each of the two operators. The unit is suspended in the catchment basin d1, so that the submersible pump unit is lowered smoothly, and the base leg 5 comes into contact with the installation surface which is the bottom surface d2 in the catchment basin d1. It will be in the state supported stably. Thereafter, the horizontal positioning of the submersible pump unit on the installation surface d2 is performed.

  Next, a drain pipe system 16 made of a vinyl chloride pipe formed so as to be able to drain into a gutter, sewer or river on the ground is introduced into the inside from the upper part of the peripheral wall portion of the water collecting d1, and made of a vinyl chloride material. The 90 degree elbow 16a and the straight pipe 16b are used to connect the merging water discharge port 15a in a communicating manner. The lower end of the straight pipe 16b is fitted into the merging water discharge port 15a. Connected with adhesive.

  When the submersible pump unit is connected to the drainage pipe system 16 as described above, the submersible pump unit is held in the drainage pipe system 16 in the water collecting tank d1, and the base leg 5 The rubber material 5b also functions to prevent horizontal movement of the submersible pump unit by the frictional action with the installation surface d2. Therefore, the position of the submersible pump unit is stably maintained even when it is in operation.

  6 and 7, reference numeral 21 denotes a water collection piping system that collects water flowing into the underground or the like and flows it into the water collection tank d1.

  In FIG. 8, 22 is a control box for the submersible pump unit, 23 is a power cable, and 24 is a cable for supplying power from the control box 22 to each of the submersible pumps 3A and 3B. The electric switches 18a to 18e corresponding to the floats 20a to 20e are connected to a circuit in the control box 22 via signal lines (not shown).

  Reference numeral 25 denotes a float provided to be able to swing up and down at a specific height position in the catchment basin d1 in order to detect excessive accumulation of water in the catchment basin d1, and 26 denotes the float 25. It is an electrical switch that is connected and disconnected in connection with the operation of The electrical switch 26 is connected to a circuit in the control box 22 via a signal line 27. Reference numeral 28 denotes a cable for supplying a water increase alarm output to an alarm device (not shown) in connection with the connection / disconnection operation of the electric switch 26.

Next, the usage example of the drainage system shown in FIGS. 6 to 8 and the operation of each part will be described.
(A) In the case of basic use Before the submersible pump unit is installed in the water collecting tank d1, the electrical switch 18d corresponding to the float 20d and the connection operating height wL5 of the electrical switch 18a corresponding to the float 20a are previously provided. Connection / disconnection operation height wL4, electric connection / disconnection operation height wL3 of the electric switch 18c corresponding to the float 20c, connection / disconnection operation height wL2 of the electric switch 18b corresponding to the float 20b, and electric switch 18e corresponding to the float 20e. The heights of the floats 20a to 20e and the electric switches 18a to 18e are adjusted and fixed so that the connection / disconnection operation height wL1 of the switches becomes smaller in this order.
Further, the connection / disconnection operation of the electric switches 18a to 18e is set on the circuit so as to be effective every other time, and the sleeving valve 9 of each upstream discharge pipe 6 is opened.

  In this state, when water accumulates in the water collecting tank d1 and the water surface reaches the connection / disconnection operation height WL3, the electric switch 18c is connected / disconnected by the upward displacement of the float 20c, and the one submersible pump 3A is operated. Operate. Accordingly, the submersible pump 3A sucks water from the water suction surface portion 3d on the lower surface side of the base plate 1, and the water discharge port 3b, the upstream discharge tube 6, the downstream discharge tube 12, the merged water discharge port portion 15a, and the drainage pipe system 16. It is discharged into a gutter on the ground. When the water surface in the water collecting tank d1 falls to the connection / disconnection operation height WL2, the electric switch 18b is connected / disconnected by the downward displacement of the float 20b, and the operation of the submersible pump 3A is stopped.

  After this, even if water accumulates again in the water collecting tank d1 and the water surface rises and reaches the connection / disconnection operation height WL3, the connection / disconnection operation of the electric switch 18c is disabled on the circuit this time. Regardless of the upward displacement of the float 20c, the submersible pump 3A does not operate, the water surface further rises, eventually reaches the connection / disconnection operation height WL4, the float 20d is displaced upward, and the electric switch 18d is connected / disconnected. As a result, the other submersible pump 3B is operated, and in accordance with the previous case, water is sucked from the water suction surface portion 3d on the lower surface side of the base plate 1, and the water discharge port 3b, the upstream discharge pipe 6, and the downstream discharge pipe 12 are sucked. The water is discharged into a gutter on the ground or the like through the combined water discharge port 15a and the drain pipe system 16. And when the water surface in the water collecting tank d1 falls to the connection / disconnection operation height WL1, the electric switch 18e is connected / disconnected by the downward displacement of the float 20e, and the operation of the submersible pump 3B is stopped. Thereafter, the above operation is repeated every time water is collected in the water collecting tank d1. As a result, the two submersible pumps 3A and 3B operate alternately, so that a satisfactory operation is obtained and only one of the submersible pumps is avoided.

In such an operation, when the flow rate of water from the water collection pipe system 21 into the water collecting basin d1 is large, the water surface in the water collecting basin d1 rises even if only one of the submersible pumps 3A or 3B is operating. In this case, however, the water surface eventually reaches the connection / disconnection operation height WL4 or WL5, and the other submersible pump 3B or 3A also starts to operate due to the upward displacement of the float 20d or 20a. Each of the pumps 3A and 3B operates in a parallel state, sucks water from the water suction surface portion 3d according to the previous case, and discharges the water to a gutter on the ground at a larger flow rate than the previous.
When the water surface in the water collecting tank d1 falls to the connection / disconnection operation height WL2, the electric switch 18b is connected / disconnected by the downward displacement of the float 20b, and the operation of one of the submersible pumps 3A is stopped. When the water surface in the water tank d1 falls to the connection / disconnection operation height WL1, the electric switch 18e is connected / disconnected by the downward displacement of the float 20e, and the operation of the other submersible pump 3B is also stopped.

  When the two submersible pumps are operated alternately as described above, when one of the submersible pumps 3A or 3B is operated, the non-operating check valve 7 is connected to the submersible pump 3A or 3B on the water outlet side. Since the positive pressure of the discharged water acts, it is in a closed state, so that the water discharged from the submersible pump 3A or 3B is prevented from being returned into the water collecting tank d1 through the non-operating submersible pump 3B or 3A. .

Further, when water flows into the catchment tank d1 at a flow rate higher than the planned value, or when the submersible pumps 3A, 3B break down, the water level in the catchment tank d1 rises abnormally and the electrical switch 26 The connection operation height WL6 or more may be reached. In this case, the electrical switch 26 is connected or disconnected due to the upward displacement of the float 25. In this connection, the water increase alarm output is connected from the circuit in the control box 22 to the cable 28. The alarm device (not shown) is activated.
In addition, when it is desired to adjust the flow rate of the discharged water of each of the submersible pumps 3A, 3B, the opening degree of the corresponding sleeve valve 9 is changed.

(B) When changing the operation timing of each of the submersible pumps 3A, 3B By changing and adjusting the height of each float 20a-20e and its corresponding electrical switch 18a-18e, the connection / disconnection operation height of the electrical switch 18a-18e WL1 to WL5 are changed. At this time, the electrical switch 18a corresponding to the float 20a and the electrical switch 18d corresponding to the float 20d may have the same connection / disconnection operation height WL5, WL4 of these electrical switches 18a, 18d. The electrical switch 18b corresponding to the float 20b and the electrical switch 18e corresponding to the float 20e may have the same connection / disconnection operation heights WL2 and WL1.

  There is sufficient space for the change work between the inner surface of the water collecting tank d1 and the submersible pump unit when changing the connection / disconnection operation heights WL1 to WL5 of the floats 20a to 20e and the electrical switches 18a to 18e. When doing so, the change operation is executed with the submersible pump unit installed in the water collecting tank d1.

  On the other hand, when there is not enough space for the change work, the following operation is performed, that is, in the state where an arbitrary float switch and an electric switch that are the objects of the change work are supported in a body. The submersible pumps 3A and / or 3B are taken out of the catchment basin d1, the change operation is performed in a wide area, and then the submersible pumps 3A and 3B are returned to the original state.

  Here, when taking out the submersible pumps 3A and / or 3B in a state in which any float switch and electric switch to be changed are supported in the same shape, the sluice valve on the corresponding side is taken out. 9 is closed, the union nut 8c of the corresponding union joint 8 is detached from the male thread of the union joint upstream pipe 8a, and the union joint upstream pipe 8a and the union joint downstream pipe The connection with the part 8b is separated. As a result, the submersible pump unit in a state in which the first upright portion 6A of the upstream discharge pipe 6 extending from the water discharge port 3b is fixed can be moved right above without any trouble. Thereafter, the suspension rope is pulled up by hanging the suspension rope on the handle portion 3d of the submersible pumps 3A, 3B related to the change work target. The support rod member 17, the floats 20a to 20e, and the electric switches 18a to 18e that are supported in the same body shape are integrally detached from the base plate 1, and subsequently the submersible pumps 3A and 3B are attached to the column member 2 as necessary. It is stably raised by being guided by contact or the like, and is smoothly taken out through the manhole of the water collecting tank d1.

On the other hand, when the submersible pumps 3A and 3B in a state where the float switch and the electrical switch are supported in the same shape after being taken out are lowered to the inside of the catchment d1 and returned to the original state, Perform the reverse procedure. In this case, when the submersible pumps 3A, 3B and the like related to the change work are lowered, the submersible pumps 3A, 3B, etc. are brought into contact with the column member 2 as necessary, and the descent is stably performed. Thus, the operator can smoothly and accurately fit the lower parts of the submersible pumps 3A and 3B into the pump holding through holes 4 of the base plate 1. Further, even when the base plate 1 is in turbid water and is difficult to see from above, the support member 2 serves as a guide for the position of the pump holding through hole 4, and the operator can place the lower part of the submersible pumps 3 </ b> A, 3 </ b> B on the base plate 1. The pump holding through hole 4 can be fitted smoothly and accurately.
Even when one of the submersible pumps 3A or 3B is taken out of the water collecting tank d1, the other submersible pump 3B or 3A is maintained in the usable state by closing the sleeve valve 9. The

(C) It is also possible to use only one of the submersible pumps 3A and 3B by operating a switch on the circuit of the control box 22.

(D) Even when the submersible pumps 3A and 3B, the check valve 7, the floats 20a to 20e, the electrical switches 18a to 18e, etc. are maintained and repaired, the operation timing of the submersible pumps 3A and 3B is changed. Maintenance and repair can be carried out.

It is a front view of the submersible pump unit concerning the present invention. It is a side view of the submersible pump unit. It is a top view of the submersible pump unit. It is a bottom view of the submersible pump unit. It is a side view which shows the straight coupling pipe | tube etc. which are used with the said submersible pump unit. A catchment basin, the submersible pump unit, etc. are shown, wherein A is a plan view of the catchment basin and B is a plan view showing a state where the submersible pump unit is installed in the catchment basin. The submersible pump unit is installed in the water collecting tank, A is a cross-sectional view showing the A1-A1 portion in FIG. 6A, and B is a cross-sectional view showing the B1-B1 portion in FIG. 6A. . It is explanatory drawing which shows the drainage system which installed the said submersible pump unit and its control apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base plate 2 Support | pillar member 3A Submersible pump 3B Submersible pump 3b Water discharge port 3e Handle part 4 Pump holding through hole 5 Base leg part 5b Rubber material 6A 1st standing part 6B 1st horizontal part 6 Upstream discharge pipe 7 Check Valve 8 Union joint 9 Slice valve 10 Straight coupling pipe 11 90 degree elbow (discharge pipe member)
12 Downstream discharge pipe (discharge pipe system)
15 Confluence discharge pipe (discharge pipe system)
12 Downstream discharge pipe 12A 2nd standing part 12B 2nd horizontal part 15a Merged water discharge port d2 Installation surface

Claims (8)

  A straight strut member is fixed at a substantially central position in a plan view of the base plate that is horizontally supported on the installation surface via the base leg portion, and has an inversely symmetrical arrangement with respect to the strut member on the horizontal plane of the base plate. The pump holding through holes are formed at two locations, and the lower part of the submersible pump is inserted into each of the pump holding through holes from above, so that the submersible pump is stably supported in the standing posture by the base plate. And an upstream discharge pipe formed in this order from the upstream side through the first standing part and the first horizontal part through which the water discharged from the water discharge port of each submersible pump passes independently, A union joint is provided at an arbitrary position in the longitudinal direction of the first horizontal portion of each upstream discharge pipe, and an arbitrary portion of the discharge pipe system downstream of the union joint is fixed to the support member. Submersible pump unit, characterized in configuration is.   A check valve is provided at an arbitrary position in the length direction of the first upright portion of each upstream discharge pipe, and a sleeve valve is provided on the downstream side of the union joint of each upstream discharge pipe. The submersible pump unit according to claim 1.   Each of the submersible pumps includes a downstream discharge pipe that extends from each of the upstream discharge pipes to the downstream side, and has a second standing part and a second horizontal part formed in this order from the upstream side in the middle of the length. The two downstream discharge pipes corresponding to the submersible pumps are formed so that two pipe systems composed of the upstream discharge pipe and the downstream discharge pipe corresponding to each of the submersible pumps are formed in reverse symmetry. Are joined in a straight line by a confluence discharge pipe made of a T-shaped joint pipe, and at this time, one connection port of the joint pipe is formed as a confluence water discharge port portion and is positioned substantially directly above the column member. The submersible pump unit according to claim 1 or 2.   The said 1st horizontal part, 2nd standing part, and 2nd horizontal part corresponding to each of the said submersible pump are arrange | positioned in the horizontal U-shape by the side view, The 1st or 2nd Claim Submersible pump unit.   5. The submersible pump according to claim 1, wherein each of the submersible pumps has a handle portion on an upper surface and has no other member directly above and near the handle portion. Submersible pump unit.   The three-way valve is formed with a female screw formed at a connection port that forms a water inlet / outlet, and the female screw and a receiving port of a discharge pipe member that communicates with the connection port have a uniform diameter made of a resin material. The straight coupling pipe is formed with a male screw that is screwed to the female screw of the connection port at one end portion of the outer peripheral surface, and the other end portion of the outer peripheral surface is connected to the other end portion of the outer peripheral surface. The submersible pump unit according to claim 2, 3, 4 or 5, wherein the submersible pump unit is inserted into the receiving port and joined with an adhesive.   A base leg provided in a downwardly projecting manner from a plurality of appropriately spaced locations on the outer peripheral surface of the lower surface, and a base plate placed horizontally on the horizontal installation surface by the base leg, and a plan view of the base plate A straight column member is fixed upright in a substantially central position, and the column member protrudes downward from the lower surface side of the base plate by the same length as the base leg, and on the upper surface of the base plate. A pump holding through-hole is formed in each of two locations that are arranged in reverse symmetry with respect to the support member, and when the lower part of the submersible pump is inserted from above into the pump holding through-hole, the submersible pump A base for use in a submersible pump unit, wherein the horizontal movement is restricted and is supported on the upper surface of the base plate so that the standing posture is stably maintained.   The base stand used for the submersible pump unit according to claim 7, wherein a lower end portion of the base leg portion and a lower end portion of the support member are covered with a rubber material.

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