KR20020025392A - Pivot type Pump - Google Patents

Abstract

PURPOSE: A pivot driving type pump is provided to prevent reduction of durability of a bearing-shaft impeller and to make easy to manufacture and maintain. CONSTITUTION: An impeller-integrated type shaft(21), formed integrally with an impeller(14), is placed on a rotary center of the impeller. Non-restraining contacting devices(23a,23b) are formed between one end of the impeller-integrated type shaft and a housing(20) and between the other end of the impeller-integrated type shaft and an intercepting device(18). The non-restraining contacting devices comprise ceramic balls and ceramic bushes. Insertion grooves are formed on the both ends of the impeller-integrated type shaft for the ceramic balls to be rotatably placed without detachment. The ceramic bushes are placed on parts of the housing and the intercepting device where the ceramic balls contact.

Description

Pivot Type Pump

The present invention relates to a pivot driven pump, and more particularly, to a pump driven by pivotal point contact having a ceramic ball at both ends of a non-constrained shaft without being driven and supported by an axis constrained by the blocking means. .

In general, as shown in FIG. 1, the pump is coupled to the shaft 2 inserted into the carbon bearing 3 and the outer circumferential surface of the carbon bearing 3 to accommodate the first magnet 5 to rotate at high speed. And a blocking means (8) for separating the second magnet (7), the first magnet (5) and the second magnet (7) installed on the drive shaft of the motor, and a motor provided on one side of the pump casing. .

The pump is divided into an impeller chamber in which the impeller 4 is located and a motor chamber in which the motor is located by the blocking means 8, and the impeller chamber and the motor chamber each include a first magnet 5 and a second magnet 7. have. Further, these motor chambers and impeller chambers are blocked by the blocking means 8 and the o-ring 6 so that water in the impeller chamber does not flow into the motor chamber side. The pump of this structure operates when the second magnet is rotated by the drive shaft of the motor, and the impeller receiving the first magnet is rotated on the shaft by the magnetic force.

In the conventional pump configured as described above, the shaft is fixed, and the impeller containing the carbon bearing is rotated around the shaft, so that the wear of the carbon bearing and the shaft is severe and the service life is not long. There is also a disadvantage that it is not easy.

Accordingly, an object of the present invention is to provide a pump structure that is easy to manufacture and manage without shortening the life in driving a bearing-shaft impeller by solving the above problems.

The pivot drive pump of the present invention for achieving the above object includes a drive motor in a housing forming an exterior, a second magnet fixedly installed on a drive shaft of the drive motor, and a first magnet. Especially in the general pump configuration comprising an impeller for pumping water while rotating at high speed by the magnetic force of the first magnet with the second magnet, and a blocking means provided between the first magnet and the second magnet. An impeller integrated shaft formed integrally with the impeller is provided at the center of rotation, and non-constrained contact means is formed between one end of the impeller integrated shaft and the housing and between the other end of the impeller integrated shaft and the blocking means. do.

In particular, the non-constrained contact means may be composed of a ceramic ball and a ceramic bushing. Insertion grooves are formed at both ends of the impeller integrated shaft to allow the ceramic ball to be rotatably seated without separation, and the housing and the blocking means. In the ceramic ball contact portion may be formed to be provided with the ceramic bushing.

The pivot driven pump configured as described above does not cause abrasion of the shaft and the carbon bearing, thereby extending the life of the pump and improving driving performance.

1 is a cross-sectional view of a conventional shaft driven pump,

2 is a cross-sectional view of a pivot driven pump according to a first embodiment of the present invention;

3 is an enlarged view of a portion 'A' of FIG. 2,

4 is a cross-sectional view of a pivot driven pump according to a second embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

14: impeller 15: first magnet

17: second magnet 18: blocking means

20: housing 21, 31: impeller integrated shaft

23a, 23b, 33a, 33b: unrestrained contact means

25a, 25b, 35a, 35b: Ceramic Ball

27: Insertion Groove 29a, 29b, 39a, 39b: Ceramic Bush

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

Figure 2 shows an embodiment of a pivot driven pump according to the present invention.

In the pivot driven pump of the present invention, a driving motor (not shown) is provided inside the housing 20 which forms an appearance like a general pump, in particular, a general magnetic pump, and a second magnet (not shown) rotates together on the drive shaft of the drive motor. 17 is fixedly installed and includes an impeller 14 including a first magnet 15 separated from the second magnet 17 by a blocking means 18.

Here, in the conventional magnetic pump, a carbon bearing is installed at the center of rotation of the impeller, and the impeller is configured to rotate at high speed in contact with a shaft fixed at an inner circumferential surface thereof.

However, in the pivot driven pump of the present invention, as shown in FIG. 2, an impeller integrated shaft 21 integrally formed with the impeller is provided at a rotation center of the impeller 14. That is, the carbon bearing is omitted, and the shaft is not fixed but rotates together with the impeller 14.

In order for the shaft 21 to rotate in this way, a means capable of supporting rotation of the impeller 14 on both ends of the shaft 21 is required. Therefore, in the present invention, there is no ratio between the one end (housing side) of the impeller integrated shaft 21 and the housing 20, and the other end (the blocking means side) of the impeller integrated shaft 21 and the blocking means 18. Constraining contact means 23a, 23b are provided.

In the first embodiment of the present invention shown in FIG. 2, ceramic balls 25a and 25b and ceramic bushes 29a and 29b are used as the non-constrained contact means. An enlarged cross-sectional view of the non-restraining contact means 23a using the bush 29a is shown.

That is, as shown, both ends of the impeller integrated shaft 21 are formed with insertion grooves 27 so that the ceramic ball 25a may be rotatably seated without being separated, and the housing 20 A ceramic bushing 29a may be formed at a portion of the blocking means 18 where the ceramic ball 25a contacts.

However, unlike the present embodiment, the insertion groove may be formed in the housing or the blocking means so that the ceramic ball may be inserted, and the ball may be made of a material other than ceramic, or as a support means capable of maintaining free rotation and rotational equilibrium. If used, there may be several variations, including other conventional means of contact may be used.

Fig. 4 shows a cross section of a pivot driven pump according to a second embodiment of the invention, in which like reference numerals refer to like elements.

4 is an example in which the pivot drive type structure of the present invention is applied to a pump having a structure similar to that of the first embodiment but having two magnets 15 and 17 and a blocking means 18 in a drum form. .

That is, the impeller integrated shaft 31 fixed to the impeller 14 is combined with the impeller 14 by the non-restraining contact means 33a and 33b such as the ceramic balls 35a and 35b and the ceramic bushes 39a and 39b. It is configured to rotate.

In the pivot driven pump of the present invention configured as described above, the second magnet 17 rotates according to the rotation of the motor, and the first magnet 15 separated by the blocking means is applied to the magnetic force of the second magnet 17. By rotating, the impeller 14 including the first magnet 15 is rotated together.

At this time, the impeller integrated shaft 21 at the center of rotation of the impeller 14 rotates together with the impeller 14. Thus, the rotation of the impeller 14 and the shaft 21 is performed by the non-restraining contact means 23a at both ends of the shaft. 23b, 33a, 33b, i.e., by the point contact between the ceramic balls 25a, 25b, 35a, 35b and the ceramic bushes 29a, 29b, 39a, 39b in this embodiment, they are supported without restraining force.

Therefore, the pivot driven pump of such a structure is driven by the point contact by the non-restricted contact means such as the ceramic ball and the bush without the surface contact between the fixed shaft and the rotating carbon bearing, thereby shortening the life due to wear of the bearings. And there is no problem of increasing the defective rate, it is effective to maintain the driving balance, excellent maneuvering, bearing is not used, the resistance is improved even if foreign matters are introduced, and the process can be reduced compared to the structure of the bearing-fixed shaft to reduce the cost .

As described above, the pivot-driven pump according to the present invention is driven while making point contact by non-restricted contact means such as ceramic balls and bushes without surface contact between the fixed shaft and the rotating carbon bearing. There is no problem of shortening the lifespan and increasing the defective rate, and it is effective in maintaining the driving equilibrium, and thus there is an advantage of excellent starting.

In addition, since the bearing is not used, even if foreign matters are introduced, the resistance is improved and the management is convenient, and the process is reduced compared to the structure of the bearing-fixed shaft, thereby reducing the cost.

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the above-described embodiments, and the general knowledge in the field of the present invention without departing from the gist of the present invention as claimed in the following claims. Anyone with a variety of modifications are possible, of course, such modifications are within the scope of the claims.

Claims (2)

Water while rotating at high speed by a magnetic force between a drive motor, a second magnet fixedly installed on the drive shaft of the drive motor and rotating, and a first magnet, the first magnet being inside the housing constituting the exterior. In the pump comprising an impeller for pumping, and blocking means installed between the first magnet and the second magnet, At the center of rotation of the impeller is provided with an impeller integrated shaft that is integrally formed with the impeller, And a non-restraining contact means formed between one end of the impeller integrated shaft and the housing, and between the other end of the impeller integrated shaft and the blocking means. The method of claim 1, wherein the non-constrained contact means is composed of a ceramic ball and a ceramic bushing, insertion holes are formed at both ends of the impeller integral shaft to be rotatably seated without separation of the ceramic ball, and to block the housing Pivot-driven pump, characterized in that the ceramic bushing is provided in the contact portion of the ceramic ball in the means.