JPH0139920Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a pump with reinforced pump casing.

Conventional technology Submersible pumps and the like are used to treat wastewater from pits, rice fields, etc. The pump casings of these submersible pumps were made of cast iron or rubber.

Problems that the invention aims to solve: However, when treating wastewater containing gravel, etc., cast iron pump casings suffer severe wear and are not durable, while rubber pump casings reduce wear. However, the partition wall of the discharge port was easily broken.

Means for Solving the Problems The present invention was developed in view of the above points, and is designed to improve drainage pumps, etc., in which the pump casing is divided into a motor side and a pump side, made of rubber or soft synthetic resin. In a pump, a reinforcing material such as metal, hard resin, glass fiber, etc. is installed inside the pump casing side of the partition wall that partitions the discharge side of the discharge port of the casing and the pump suction side, and the tip of this inside reinforcing material is installed. To provide a pump with reinforced pump casing, characterized in that divided pump casings are joined by protruding toward the motor side and inserting into the partition wall side of the motor side.

Example The present invention will be explained below based on examples.

FIGS. 1 to 3 show an embodiment in which the present invention is applied to a drainage pump. As shown in FIG. 1, the pump 1 is configured such that an impeller 5 of a pump section 4 can be freely rotated by a motor section 3 which is water-sealed with a seal 2 such as an O-ring, and a predetermined water hole 6 is formed in the outer periphery of the pump section 4. Wastewater, etc. is sucked into the suction port 8 through the strainer 7 formed by perforating a large number of holes, and is processed to the outside through the discharge port 10 of the pump casing 9 and the discharge part 11 integrally attached to the side surface of the pump. It is formed like this. The pump casing 9 of the pump section 4 is made of a rubber material such as NBR and is formed by dividing it into halves into a motor section side and a pump section side as shown in Fig. 1, and these are joined together as shown in the figure. It is something that This divided pump side casing 12 is formed into a cylindrical shape as shown in FIGS.
The central part provided with the suction port 8 is formed into a U-shaped cross section, and is engaged with the protruding part 14 of the casing cover 13 as shown in the figure and fixed with adhesive (not shown) or the like. There is. The peninsula-shaped partition wall 15 of the discharge port 10 on the side circumference of the pump casing 9 is provided with a narrow arc-shaped opening 16 as shown in FIG. 2 at its tip. The partition wall portion 15 is reinforced by attaching a metal reinforcing member 17 such as a steel plate to the partition wall portion 16. The reinforcing material 17 extends through the pump casing 14 from the casing cover 13 side as shown in FIG.
It is fitted into an opening 20 similarly recessed in the partition wall 19 of No. 8. The end of the reinforcing material 17 on the casing cover side is bent, and this bent part 21 is fixed to the casing cover 13 by means of adhesive, welding, etc., so that the partition wall part 15 can be firmly supported. ing. In addition, pump casing 9
A large number of small-diameter recesses 22 as shown in FIG. 3 are provided in the recesses 22 as shown in FIG. This allows the rubber material to be filled to harden in the shortest possible time.

Function When draining bits, etc. using the pump 1 described above, even if the waste water containing gravel etc. is sucked in from the suction port 8 of the pump casing 9 through the strainer 7 and discharged to the discharge port 10, Since the pump casing 9 is made of a rubber material, it does not wear out unlike cast iron, and even if pressurized water repeatedly hits the partition wall 15 of the discharge port 10, the partition wall 15 is reinforced with metal. Since it is reinforced with material 17, it can be prevented from being bent and damaged, and its durability can be improved.

In particular, the reinforcing material is inserted into the partition wall of the divided pump casing from the casing cover, passing through the pump side casing and fittingly attached to the motor side casing, so it remains strong even when the pump casings are joined together. It is possible. Furthermore, since the reinforcing material is arc-shaped and fixed to the casing cover with bent ends, the rigidity of the reinforcing material itself is increased, and the durability of the partition wall portion can be further enhanced.

Other Embodiments FIG. 4 shows another embodiment of the present invention, in which the partition wall portion 15
In this case, reinforcing materials 17 as described above are attached along the partition wall portion 15 at regular intervals.

In this embodiment, the entire peninsular partition wall can be reinforced, and even if the reinforcing material is protruded from the pump-side casing and fitted onto the motor-side casing, separation of the reinforcing material from the pump casing can be prevented. This makes it more durable.

In the above embodiments, the pump casing is molded into a predetermined shape and attached to the casing cover, but it can also be molded integrally with the casing cover, and the reinforcing material can also be attached to the pump casing. It can also be installed integrally with the

In addition, although the pump casing is made of rubber, it can also be made of wear-resistant soft synthetic resin such as nylon or urethane, and the reinforcing material is not limited to metal, but can also be made of hard resin, glass fiber, or other materials with a specified strength. It can also be used as a member.

Note that although a submersible pump has been described as a pump, the present invention is not limited to submersible pumps.

Effects of the invention As described above, with the present invention, the partition wall of the discharge port, which is prone to breakage and lacks durability, can be reinforced with a reinforcing material, and the pressure water increased by the pump can be repeatedly applied to the partition wall. This prevents the partition wall from bending and damaging it even if it is bumped into, increasing its durability, and even if the pump casing is divided and joined, it can firmly support the divided partition wall of the pump casing. , which can perform a pump action with a predetermined performance.

[Brief explanation of drawings]

Fig. 1 is a partially omitted side sectional view of an embodiment of the present invention, Fig. 2 is a plan view of the pump casing portion of the same, Fig. 3 is an enlarged side sectional view of the recess of the above, and Fig. 4 is a partially omitted side sectional view of an embodiment of the present invention. It is a partially omitted plan view of another embodiment same as the above. 1...Pump, 9...Pump casing, 10
... Discharge port, 15 ... Partition wall section, 17 ... Reinforcement material.

Claims (1)

[Scope of utility model registration request] In pumps such as drainage pumps in which the pump casing is divided into a motor side and a pump side using a rubber material or soft synthetic resin material, the partition wall section that partitions the discharge side of the discharge port of the casing and the pump suction side. A reinforcing material such as metal, hard resin, graph fiber, etc. is installed on the pump casing side, and the tip of this reinforcing material is pushed out toward the motor side and inserted into the partition wall on the motor side to separate the divided pump casing. A pump with a reinforced pump casing, characterized in that it is joined.