JPH0530495U - Drainage pump - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the life of the pump casing from decreasing. [Structure] A tip member 1 made of a wear resistant material, for example, a high hardness metal material such as ceramic, chrome or stainless steel, or a synthetic rubber such as styrene butadiene rubber or nitrile rubber is integrally formed at the tip of a tongue portion 18 of a pump casing 13. Attach to.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drainage pump, and more particularly to a drainage pump that drains a liquid containing a wear-progressing substance such as sand.

[0002]

[Prior Art]

 Conventionally, a drainage pump 10 as shown in FIG. 12 is known. The drainage pump 10 is arranged so as to face a pump casing 13 having a suction port 11 and a discharge part 12 and the suction port 11 of the pump casing 13, and an impeller 15 driven by a motor 14 for rotation. And an upper casing 17 which forms a discharge port 16 facing the discharge part 12 of the pump casing 13 and covers an upper surface opening of the pump casing 13, and the liquid from the suction port 11 is rotated by the rotation of the impeller 15. Is discharged to the discharge section 12 and discharged from the discharge port 16. As shown in FIGS. 13 and 14, a tongue portion 18 is integrally formed on the pump casing 13 so as to guide the liquid from the suction port 11 to the discharge portion 12 by the rotation of the impeller 15, which is generally a mouse. Cast products made of cast iron or spheroidal graphite cast iron are used.

[0003]

[Problems to be solved by the device]

 By the way, when the liquid flowing inside the pump casing 13 is guided to the discharge part, a part of the liquid collides with the tongue portion 18, so that when the liquid contains a wear-progressing substance such as sand, Due to the use of the material, the tip of the tongue portion 18 is significantly worn (hatched portion in FIG. 15), which lowers the lift and adversely affects the pump performance. For this reason, as the wear progresses, the pump casing 13 must be replaced, which not only requires a great deal of cost, but also complicates the work.

Further, it has been proposed to form the pump casing 13 from rubber. However, although the effect of extending the life of the pump casing 13 can be expected with respect to wear, there are problems such as deformation due to internal pressure and piercing of nails. There is a drawback that occurs, and even in this case, it is necessary to replace the pump casing 13.

The present invention has been made in view of the above problems, and provides a drainage pump capable of preventing the life of the pump casing from being shortened.

[0006]

[Means for Solving the Problems]

 A first invention is a pump casing having a suction port, at least one discharge portion, and a tongue portion that guides liquid from the suction port to a discharge portion, and is arranged so as to face the suction port of the pump casing and is rotated by a motor. It consists of a driven impeller and an upper casing that has a discharge port facing the discharge part of the pump casing and covers the upper opening of the pump casing. The tip of the tongue of the pump casing is made of an abrasion resistant material. It is characterized in that a tip member having a wear resistant member made of a wear resistant material or a tip member is integrally attached.

A second aspect of the present invention is directed to a pump casing having a suction port, at least one discharge portion, and a tongue portion that guides liquid from the suction port to the discharge portion, and a suction port of the pump casing. It is composed of an impeller that is arranged and driven to rotate by a motor, and an upper casing that has a discharge port that faces the discharge part of the pump casing and that covers the upper opening of the pump casing. It is characterized in that it is detachably arranged.

[0008]

[Action]

 A tip member made of a wear-resistant material or a tip member having a wear-resistant member made of a wear-resistant material is integrally attached to the tip of the tongue portion of the pump casing.

As a result, even when the liquid containing the wear-promoting substance is drained, wear of the tongue is reduced, and stable pump performance can be maintained for a long period of time.

A tip member is detachably attached to the tongue portion at the tip of the tongue portion of the pump casing.

With such a detachable structure, if the tip member is worn, the pump performance can be restored by replacing the tip member, and the running cost can be reduced.

[0012]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

In the embodiment shown in FIG. 1, a tip member 1 made of a wear-resistant material is integrally attached to the tip of a tongue portion 18 by contact or welding. Suitable abradable materials are ceramics, high hardness metal materials such as high chromium cast iron, and synthetic rubbers such as styrene butadiene rubber and nitrile butadiene rubber.

As shown in FIG. 2, the tip member 1A is formed by lining a base material 2A and a wear resistant member 3A made of a wear resistant material on the base material 2A. May be integrally attached to the tip of the tongue portion 18. As shown in FIG. 3, the tip member 1B is a base material 2B, and the base material 2B is coated with an abrasion resistant material 3B made of an abrasion resistant material. It may be configured and integrally attached to the tip of the tongue portion 18.

Although FIGS. 2 and 3 show an embodiment in which the tip members 1A and 1B are attached to the tip of the tongue portion 18, the tip of the tongue portion 18 is made of a wear resistant material. The abradable material may be directly lined or coated to form the tip member.

As described above, the tip member 1 made of a wear-resistant material or the tip members 1A, 1B provided with the wear-resistant members 2A, 2B made of a wear-resistant material is integrated with the tip of the tongue portion 18. By mounting, even if the liquid containing the wear-promoting substance is drained, wear of the tip of the tongue portion 18 of the pump casing 13 is reduced, and stable pump performance can be maintained for a long period of time.

Although the tip members 1, 1 A, 1 B are integrally attached to the tip of the tongue portion 18 in these embodiments, the tip member may be detachably arranged at the tip of the tongue portion 18. .. Hereinafter, these examples will be described.

In the embodiment shown in FIG. 4, a tip member 1C made of a wear resistant material is arranged at the tip of the tongue portion 18, and is fixed from the bottom wall of the pump casing 13 by a bolt c. Further, as shown in FIG. 5, while forming a mortise hole 13d in the bottom wall of the pump casing 13, a mortise 1d is formed at the lower end of the tip member 1D, and the mortise 1d of the tip member 1D is formed in the mortise hole of the pump casing 13. You may make it fit in 13d. Further, contrary to FIG. 5, the convex portion 13e is formed on the inner surface of the bottom wall of the pump casing 13, while the hole 1e is formed in the tip member 1E, and the hole 1e of the tip member 1E is formed in the convex portion 13e of the pump casing 13. You may make it fit in (refer FIG. 6).

In these embodiments, the lateral movement is restricted by the fitting of the mortise 1d and the mortise hole 13d, and the protrusion 13e and the hole 1e, and the longitudinal movement is controlled by the upper casing 17 being the tip member. It is regulated by sandwiching the upper ends of 1D and 1E. The shape of these mortise holes 13d and protrusions 13e is preferably cylindrical in terms of workability. Further, the tip shape of the tongue portion 18 needs to be formed in a cylindrical surface that matches the shape of the tip members 1C, 1D, 1E, for example, a cylindrical shape.

Further, as shown in FIGS. 7 and 8, a drill hole 13f is formed in the bottom wall of the pump casing 13, and the tip member 1F is formed into a rod shape that matches the drill hole 13f of the pump casing 13. The member 1F may be fitted in the drill hole 13f of the pump casing 13. Further, a drill hole 13g is also formed in the upper casing 17 so that the front end member 1G is fitted into the drill hole 13g of the pump casing 13 and the drill hole 17g of the upper casing 17 so as to be sandwiched between the pump casing 13 and the upper casing 17. It can also be configured (see FIG. 9).

In these embodiments, if the tip members 1C to 1G are worn, the worn tip members 1C to 1G may be removed, and new tip members 1C to 1G may be arranged and appropriately fixed. By replacing the pump casing 13 with the new tip members 1C to 1G as described above, it becomes possible to recover stable pumping performance at a lower cost than the conventional example in which the pump casing 13 is replaced. The material of the tip members 1C to 1G may be a general material having no wear resistance, but in consideration of maintenance and inspection, it is formed of a wear resistance material so that the replacement frequency is low. Preferably. In this case, a wear resistant member made of a wear resistant material may be provided on a part of the tip member. For example, as shown in FIG. 10, a rod-shaped tip member 1H is covered with a base material 2H, and the wear resistant member 3H made of a wear resistant material is lined or coated around the base material 2H. It may be configured and fitted into a drill hole 13h formed in the bottom wall of the pump casing 13. Further, a drill hole 17j is formed in the upper casing 17, and a base material 2J and a wear resistant member 3J made of a wear resistant material surrounding the base material 2J are lined or coated. The tip member 1J thus formed may be fitted into the drill hole 13j of the pump casing 13 and the drill hole 17j of the upper casing 17 to be sandwiched (see FIG. 11).

[0022]

[Effect of the device]

 As described above, according to the present invention, a tip member made of a wear resistant material or a tip member having a wear resistant member made of a wear resistant material is integrally attached to the tongue tip of the pump casing. As a result, wear on the tip of the tongue is reduced and stable pump performance can be maintained for a long period of time.

Further, by disposing the tip member detachably at the tip of the tongue of the pump casing, if the tip of the tongue is worn, it can be replaced with a new tip member to recover the pump performance at a low cost. it can.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a tip member of the present invention is integrally attached to a tip of a tongue portion.

FIG. 2 is a perspective view showing a state in which another tip member is integrally attached to the tip of the tongue portion.

FIG. 3 is a perspective view showing a state in which another tip member is integrally attached to the tip of the tongue portion.

FIG. 4 is a cross-sectional view showing a state in which the tip member of the present invention is detachably attached to the tip of the tongue.

FIG. 5 is a cross-sectional view showing a state in which another tip member is detachably disposed on the tip of the tongue portion.

FIG. 6 is a cross-sectional view showing a state in which another tip member is detachably disposed on the tip of the tongue portion.

FIG. 7 is a perspective view showing a pump casing with a part thereof omitted.

8 is a perspective view showing a state in which a tip member is arranged at the tip of the tongue portion of the pump casing of FIG.

FIG. 9 is a perspective view showing a state in which another tip member is arranged at the tip of the tongue portion of the pump casing.

FIG. 10 is a perspective view showing a state in which another tip member is arranged at the tip of the tongue portion of the pump casing.

FIG. 11 is a perspective view showing a state in which another tip member is arranged at the tip of the tongue portion of the pump casing.

FIG. 12 is a front view showing the drainage pump partially broken away.

FIG. 13 is a plan view of a pump casing of the drainage pump.

14 is a sectional view of the pump casing of FIG. 13 taken along line XX.

FIG. 15 is a perspective view showing a tongue portion of a pump casing.

[Explanation of symbols]

1, 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1
H, 1J Tip member 2A, 2B, 2H, 2J Base material 3A, 3B, 3H, 3J Wear resistant member 10 Drainage pump 13 Pump casing 17 Upper casing 18 Tongue

Claims (3)

[Scope of utility model registration request] 1. A pump casing having a suction port, at least one discharge portion, and a tongue portion that guides liquid from the suction port to the discharge portion; and a pump casing disposed facing the suction port of the pump casing and rotationally driven by a motor. And an upper casing that has a discharge port that faces the discharge portion of the pump casing and that covers the upper opening of the pump casing.
A drainage pump, wherein a tip member made of a wear resistant material or a tip member having a wear resistant member made of a wear resistant material is integrally attached to a tip of a tongue portion of the pump casing. 2. A pump casing having a suction port, at least one discharge portion, and a tongue portion that guides liquid from the suction port to the discharge portion, and a pump casing arranged facing the suction port of the pump casing and rotationally driven by a motor. And an upper casing that has a discharge port that faces the discharge portion of the pump casing and that covers the upper opening of the pump casing.
A drainage pump, wherein a tip member is detachably disposed at the tip of the tongue portion of the pump casing. 3. The drainage pump according to claim 2, wherein the tip member is made of a wear resistant material, or the tip member is provided with a wear resistant member made of a wear resistant material.