JPH0640387U - Submersible electric pump device - Google Patents

Abstract

(57) [Summary] [Purpose] Submersible electric pump device 10 in which the multiple reciprocating pump 14 is changed to a rotational position suitable for efficiency during maintenance work, etc.
In (1), the size of the vibration isolator of the support for the motor 12 and the multiple reciprocating pump 14 is reduced, and damage to the seal packing due to rotation is avoided. [Structure] The support shaft 50 is provided at each end of the motor 12 and the multiple reciprocating pump 14 on the opposite side to the opposite side, and is rotatable with respect to the support bracket 60 via a pair of half vibration isolating rubbers 70, respectively. Is pivotally supported. The base 82 is disposed on the side of the multiple reciprocating pump 14, and when the multiple reciprocating pump 14 is in operation, the multiple reciprocating pump 14 in which the drive unit 18 and the pump unit 20 are arranged in a substantially horizontal arrangement.
The pump section (20) is received via the block-shaped anti-vibration rubber (84) to limit the rotation of the multiple reciprocating pump (14).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a submersible electric pump device that can streamline operations such as maintenance and repair.

[0002]

[Prior art]

 The submerged electric pump device is installed, for example, at the bottom of a tank that stores a liquid, while having a vibration damping function. In addition, the reciprocating pump of the submersible electric pump device is equipped with a drive section and a pump section arranged in a direction perpendicular to the drive shaft, and the drive section and the pump section are operated in a horizontal position during operation. However, at the time of maintenance or repair, it is desirable that the pump part of the reciprocating pump is on the upper side so that it is suitable for the operator to reach out from the upper side of the tank.

In the conventional vibration damping structure of the submersible electric pump device, the reciprocating pump is coupled to the motor through the joint device, and the stay is attached to the lower part of the motor to support the motor and the reciprocating pump together. In addition, an annular vibration isolator is provided in the middle of the stay. In addition, in order to streamline maintenance and repair work, an arcuate groove is drilled on one joint side at the joint between the joint device and the motor, and bolts or the like are inserted into the circumferential groove. Then, it is screwed to the other joint side, and at the time of maintenance work etc., loosen the bolt and move the bolt in the extending direction of the circumferential groove to rotate the reciprocating pump and raise the pump part to the upper side. It is possible to

[0004]

[Problems to be solved by the device]

 The problems of such a conventional submerged electric pump device are as follows. (A) Since the reciprocating pump is supported together with the motor through the stay below the motor, and the vibration isolator is interposed in the middle of the stay, the stay and the vibration isolator become large and the vibration proof is achieved. The vibration absorption effect of the body is insufficient. (B) When rotating the joint device relative to the motor, the seal at the joint is easily damaged.

An object of the invention of claim 1 is to provide a submersible electric pump device which can overcome the above problems. An object of the invention of claim 2 is to provide a submersible electric pump device which can further improve work such as maintenance.

[0006]

[Means for Solving the Problems]

 The invention will be described using the reference numerals of the drawings corresponding to the embodiments. The submersible electric pump device (10) according to claim 1 has the following components (a) to (e). (A) Pump part (20) and drive part (18) are arranged in a direction perpendicular to the drive shaft (28) Reciprocating pump (14) (b) Center line is almost on the same straight line as the drive shaft (28) The motor (12) (c) which drives the drive shaft (28) by the output shaft (26) so that the output shaft (26) is provided on the opposite side of the reciprocating pump (14) and the motor (12). Support shafts (50) (d) which are respectively provided at the ends and extend substantially along the center line of the output shaft (26) (d) Each support shaft (50) is rotatably supported via an annular vibration isolator (70). Support bracket (60) (e) Rotation of reciprocating pump (14) is restricted by contact with pump part (20) of reciprocating pump (14) with anti-vibration layer (84) interposed during operation of reciprocating pump (14) Stopper (82)

The submersible electric pump device (10) according to claim 2 further comprises (f) a locking means for releasably locking the reciprocating pump (14) at a rotational position different from the rotational position during operation. It has (76).

[0008]

[Action]

 The submersible electric pump device (10) according to claim 1, wherein when the submersible electric pump device (10) is in operation, the reciprocating pump (14) brings the pump section (20) into contact with the vibration damping layer (84). Therefore, the rotation is limited. As a result, the reciprocating pump (14) has its drive shaft (28) driven by the output shaft (26) of the motor (12) to suck and discharge the liquid without any trouble. Of the vibrations of the motor (12) and the reciprocating pump (14), those that try to conduct to the support bracket (60) via the support shaft (50) are absorbed by the ring-shaped vibration isolator (70), and the pump part The portion that is going to be transmitted to the stopper (82) via the (20) is absorbed by the vibration isolation layer (84).

At the time of work such as maintenance and repair of the reciprocating pump (14), the support shaft (50) is rotated with respect to the support bracket (60), so that the reciprocating pump (14) becomes more efficient. It is rotated to the rotation position.

In the submersible electric pump device (10) according to the second aspect, the motor (12) and the reciprocating pump (14) are set to the rotational position so that the reciprocating pump (14) can be efficiently maintained and inspected. Then, the locking means (76) locks the reciprocating pump (14).

[0011]

【Example】

 The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is a perspective view showing a submersible electric pump device 10 in a normal rotation position. The motor 12 and the multiple reciprocating pump 14 are connected via a joint device 16. The multiple reciprocating pump 14 has a drive unit 18 and a pump unit 20 arranged in a direction perpendicular to the crankshaft 28. The drive unit 18 includes a crankcase 22, and the pump unit 20 includes a manifold 24 having an intake port and a discharge port on the tip side.

FIG. 3 is a sectional view showing the structure of the joint device 16. The motor 12 and the multiple reciprocating pump 14 are arranged such that the center lines of the output shaft 26 and the crank shaft 28 thereof are on the same straight line. The output shaft 26 and the crank shaft 28 project into the housing 34, and a common key 30 is fitted and inserted therein to rotate integrally. The sleeve 32 is fitted to the ends of the output shaft 26 and the crankshaft 28 on the coupling side so as to include the key 30 inside, and prevents the key 30 from coming off. The housing 34 has flanges 36 and 38 on the side of the motor 12 and the drive unit 18, respectively, and seal packings 40 and 42 are interposed between the casing 44 of the motor 12 and the crankcase 22 of the drive unit 18 at the flanges 36 and 38, respectively. And is tightened with bolts 45.

In FIG. 1, the casing 44 is attached to the end surface of the drive unit 18 of the motor 12 and the multiple forward / reverse pump 14 on the side opposite to the joint device 16. FIG. 4 is a perspective view of the pad member 46. The disk-shaped contact portion 48 is applied to the end surface portions of the motor 12 and the drive portion 18 on one end surface side, and the support shaft 50 projects from the other end surface side of the disk-shaped contact portion 48, and the motor 12 and When the contact member 46 is attached to the reciprocating pump 14, it extends along the center line of the output shaft 26 of the motor 12 and the crankshaft 28 of the multiple reciprocating pump 14. The rod-shaped protrusion 52 is coupled to the peripheral surface of the support shaft 50 and extends in the radial direction of the support shaft 50. The locking hole 54 is formed on the side surface of the rod-shaped protrusion 52 opposite to the disc-shaped contact portion 48 at the tip of the rod-shaped protrusion 52.

FIG. 5 is a cross-sectional view of an assembled state of the casing 44 attached to the motor 12 side. Although illustration is omitted, the casing 44 mounted on the multiple reciprocating pump 14 side is installed in substantially the same state. The seal packing 56 is interposed between the disk-shaped contact portion 48 and the casing 44 of the motor 12, and a plurality of bolts 58 fasten the disk-shaped contact portion 48 to the casing 44.

6 and 7 are an exploded view of the support bracket 60 and a perspective view of the assembled state. Each support bracket 60 is provided corresponding to each support shaft 50 (FIG. 1), and the stay portion 62 is in an upright state facing the support shaft 50 and has a substantially triangular shape with its top cut horizontally. . The receiving portion 64 is fixed to the tip of the stay portion 62, and the holding portion 66 is connected to the receiving portion 64 from above. The receiving portion 64 and the pressing portion 66 are a half frame portion 68, and the inner peripheral side of the half frame portion 68 extends slightly inward from the inner periphery of the half frame portion 68, and the outer peripheral portion is covered by the half frame portion 68. It has a split anti-vibration rubber 70. A bolt (not shown) is inserted from the outer peripheral surface side into the insertion hole 72 of the holding portion 66, and is screwed into the screw hole 74 of the receiving portion 64, so that the holding portion 66 is fixed to the receiving portion 64. The locking rod 76 is fixed to the surface of the stay portion 62 on the receiving portion 64 side below the receiving portion 64, and projects in the direction perpendicular to the surface of the stay portion 62. In FIG. 5, the upper and lower half vibration isolating rubbers 70 cooperate to form an annular vibration isolator, and rotatably supports the support shaft 50 on the inner peripheral side.

FIG. 8 is a perspective view showing a state where the locking rod 76 is fitted in the locking hole 54. When the abutment member 46 rotates until the rod-shaped protrusion 52 reaches the vertically lower position, the locking hole 54 comes to a position facing the tip end of the locking rod 76, and after the elastic deformation of the rod-shaped protrusion 52. The tip of the locking rod 76 is fitted into the locking rod 76 so that the locking rod 76 is locked. The rod-shaped projecting portion 52 projects in the direction opposite to the projecting direction of the pump portion 20 with respect to the crankshaft 28 of the multiple reciprocating pump 14, and the locking rod 76 fits into the locking hole 54. In the state where the rotation of the contact member 46 is locked, the multiple reciprocating pump 14 is in the standing position with the pump portion 20 on the upper side.

FIG. 2 is a front view showing the submersible electric pump device 10 in the normal rotation position. Incidentally, A is the rotation direction of the output shaft 26 of the motor 12. In FIGS. 1 and 2, the stay portion 62 has its lower end fixed to the bottom portion 80 of the tank 78, and the base 82 has its lower end fixed to the bottom portion 80 and is disposed on the side portion of the multiple reciprocating pump 14 to provide the upper portion. It has block-shaped anti-vibration rubber 84. When the multiple reciprocating pump 14 rotates in the rotation direction A, the manifold 24 of the pump unit 20 is brought into contact with the block-shaped anti-vibration rubber 84, and the rotation of the drive unit 18 and the pump unit 20 is restricted in the substantially horizontal direction. .

FIG. 9 is a structural diagram of a tank device 86 with casters equipped with the submersible electric pump device 10. The tank 78 stores water 88, and the upper lid is openable. The float 90 floats on the surface of the water 88 and detects the level of the water 88. When the residual amount of the water 88 decreases, a valve (not shown) is opened to supply the water 88 into the tank 78. The motor control unit 92 is provided on the side of the tank 78, and is equipped with an operating member for the motor 12. The strainer 94 is arranged near the bottom portion 80 and is connected to the suction port of the pump 14 via the suction hose 96.

The operation of the embodiment will be described. When the submersible electric pump device 10 is in operation, the motor 12 and the multiple reciprocating pump 14 receive the rotation of the output shaft 26 of the motor 12 in the A direction and the weight applied to the center of gravity of the pump portion 20, and thus the support bracket 60 In the pair of half vibration-isolating rubbers 70, the supporting shaft 50 is rotated to rotate in the A direction, the manifold 24 is brought into contact with the block-shaped vibration isolating rubber 84, and the rotation is stopped. As a result, the motor 12 and the multiple reciprocating pump 14 are in the rotational position where the driving unit 18 and the pump unit 20 of the multiple reciprocating pump 14 are arranged in a substantially horizontal direction. Of the vibrations of the motor 12 and the multiple reciprocating pump 14 that accompany the operation of the submersible electric pump device 10, the part that tries to be transmitted to the support bracket 60 via the support shaft 50 is a pair of upper and lower half anti-vibration rubbers 70. The block-shaped vibration-isolating rubber 84 absorbs the portion that is absorbed by and is transmitted to the table 82 via the pump section 20.

During work such as maintenance and inspection of the pump section 20 of the multiple reciprocating pump 14, the support shaft 50 is rotated by a pair of upper and lower half anti-vibration rubbers 70, so that the motor 12 and the multiple reciprocating pumps are rotated. The pump 14 is rotated to a standing position in which the pump portion 20 of the multiple reciprocating pump 14 is above the drive portion 18. Along with that, the rod-shaped protruding portion 52 of the abutting member 46 comes to a downward position and is elastically deformed by the contact with the tip end portion of the locking rod 76 of the support bracket 60 in the rotation direction of the multiple reciprocating pump 14. Then, the tip end portion of the locking rod 76 is fitted into the locking hole 54, and after the fitting, the elastic rod is returned by elastic deformation to be locked by the locking rod 76. As a result, the motor 12 and the multiple reciprocating pump 14 are fixed at the rotational position corresponding to the standing position of the multiple reciprocating pump 14. The worker extends his / her hand from the upper edge of the tank 78 whose water 88 has been drained and the upper side of which is open, and performs maintenance work and the like involving disassembly of the pump unit 20 and the like. After the work is completed, rotate the motor 12 and the multiple reciprocating pump 14 with an appropriately large operating force to elastically deform the rod-shaped protrusion 52 and remove the tip of the locking rod 76 from the locking hole 54. Then, the multiple reciprocating pump 14 is rotated to the contact position of the block 82 with the block-shaped anti-vibration rubber 84.

In the embodiment, the multiple reciprocating pumps 14 at the time of work such as maintenance are set in the upright position, but they may be set in the rotation position appropriately inclined with respect to the vertical direction. In that case, the position of the locking rod 76 or the protruding direction of the rod-shaped protruding portion 52 is changed so that the multiple forward and backward pumps 14 are locked at the inclined position. In the embodiment, the pair of half vibration isolator rubbers 70 are fixed to the support bracket 60 and rotatably support the support shaft 50 on the inner peripheral side. The inner peripheral side may be fixed to the support shaft 50, and the outer peripheral side may be rotatably guided and supported by the receiving portion 64 and the pressing portion 66.

[0022]

[Effect of device]

 According to the first aspect of the present invention, the support shaft is provided at the ends of the motor and the reciprocating pump on the opposite side to the opposite side so as to extend on the same straight line as the output shaft of the motor, and the support bracket is rotatably annular. Since it is pivotally supported via a vibration isolator, the reciprocating pump can be moved to a rotational position that allows for efficient maintenance and other work separately from the operation, and the annular vibration isolator that performs vibration isolation can be made smaller. In addition, the supporting bracket including it can be downsized.

According to the first aspect of the present invention, when the reciprocating pump is rotated between the rotational position during operation and the rotational position during work such as maintenance, the coupling device between the motor and the reciprocating pump, the motor and the reciprocating pump. Since relative rotation with respect to one side is omitted, it is possible to prevent damage to the seal at the joint.

According to the second aspect of the present invention, the reciprocating pump can be fixed to the rotation position where the work such as maintenance can be performed efficiently by the locking means, so that the work efficiency can be further improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a submersible electric pump device in a rotation position during normal operation.

FIG. 2 is a front view showing the submersible electric pump device in a normal rotation position.

FIG. 3 is a cross-sectional view showing the structure of the joint device.

FIG. 4 is a perspective view of a pad member.

FIG. 5 is a cross-sectional view of an assembled state of a casing attached to the motor side.

FIG. 6 is an exploded view of a support bracket.

FIG. 7 is a perspective view of a support bracket in an assembled state.

FIG. 8 is a perspective view showing a state where a locking rod is fitted in a locking hole.

FIG. 9 is a structural diagram of a tank device with casters equipped with a submersible electric pump device.

[Explanation of symbols]

10 Submersible Electric Pump Device (Submersible Electric Pump Device) 12 Motor 14 Multiple Reciprocating Pump (Reciprocating Pump) 18 Drive Unit 20 Pump Unit 26 Output Shaft 28 Crank Shaft (Drive Shaft) 50 Support Shaft 60 Support Bracket 70 Half Split Prevention Vibration rubber (annular vibration isolator) 76 Locking rod (locking means) 82 units (stopper) 84 Block vibration damping rubber (vibration damping layer)

Claims (2)

[Scope of utility model registration request] 1. A pump unit in a direction perpendicular to the drive shaft (28).
The reciprocating pump (14) in which the (20) and the driving unit (18) are arranged, and the output shaft (26) such that the center line thereof is substantially on the same straight line as the drive shaft (28) are provided. ) To drive the drive shaft (28), and the reciprocating pump (14) and the motor (12) at opposite ends of the motor (12) from the output shaft (26). ) Support shaft (50)
A support bracket (60) for rotatably supporting each support shaft (50) via an annular vibration isolator (70), and a vibration isolation layer (84) interposed during operation of the reciprocating pump (14). A submersible electric pump device comprising: a reciprocating pump (14); and a stopper (82) for restricting rotation of the reciprocating pump (14) by contact with the pump portion (20). 2. The locking means (76) for releasably locking the reciprocating pump (14) at a rotational position different from the rotational position during operation. Submersible electric pump device.