KR102238073B1 - Pumping device - Google Patents

Abstract

An objective is to provide a pump apparatus for preventing a casing of a pump from being discarded due to a rupture. To achieve the objective, the pump apparatus includes a motor (10), a casing (20) and a cover means (30). The motor (10) has a motor body (12) rotating a pump shaft (13), and an impeller (14) installed on the pump shaft (13). The casing (20) has a pump casing (22) having an opening (24), the pump casing (22) has an inner circumference surface (222), an outer circumference surface (223) and a cross section (224), and a female screw (225) is formed on the inner circumference surface (222). The cover means (30) has a single wall (33) coming in contact with the cross section (224), a cover body (31) inserted into the opening (24), and an outer ring wall (32) surrounding the outer circumference surface (223) from the outside. The cover body (31) has an inlet communicating with the opening (24), and an outer ring surface bordering the inner circumference surface (222), and a male screw (312) screwed with the female screw (225) is formed on the outer ring surface.

Description

Pumping device {PUMPING DEVICE}

The present invention relates to a pump for transporting fluid, and more particularly to a pump device for transporting a chemical solution.

As disclosed in Patent Document 1, a conventional pump device 100 includes a main body 110, a mounting sheet 120 fixed to an upper portion of the main body 110, and an impeller installed on the pump shaft ( 130), a motor 140 installed on the mounting seat 120 to rotate the impeller 130 together with the pump shaft, and a cover 20 covering the main body 110 from the bottom, and a cover 20 It has a C-shaped fixing means 10 formed in a C-shape for fixing the body 110.

When the above-described pump device 200 transports the fluid, the fluid sucked from the suction port 21 flows to the discharge port by the impeller 130 to complete the transport of the fluid. However, when the fluid to be transported is a high-temperature or high-pressure chemical solution, the inlet 21 of the main body 110 is often expanded and deformed during the transport process, and the pump device 100 is also used as such. When used in a situation, the deformation around the suction port 21 of the main body 110 gradually progresses, and when the output of the motor 140 or the flow rate of the pump is increased, a problem in which the cover 20 is broken from the suction port occurs. have.

Taiwan Utility Model Registration No. M354003 Gazette

Accordingly, an object of the present invention is to provide a pump device capable of improving the drawbacks of the prior art.

In order to achieve the above object, the present invention provides a motor body for rotationally driving a pump shaft extending along an axis, and a motor having an impeller installed on the pump shaft so as to rotate together with the pump shaft of the motor body, and the A pump device comprising a casing having a pump casing that surrounds a vortex chamber accommodating an impeller and has an opening formed in an extending direction of the pump shaft, and a cover means attached to the casing so as to cover the opening, wherein the The pump casing has an inner circumferential surface adjacent to the opening and facing the vortex chamber, an outer circumferential surface located opposite the inner circumferential surface, and a cross section extending from the inner circumferential surface to the outer circumferential surface and facing the cover means, and on the inner circumferential surface A female screw is formed, and the cover means includes an end wall contacting the end face of the pump casing, a cover body formed in a dish shape so as to fit into the opening formed in the pump casing from the end wall, and the outer circumferential surface thereof The cover body has a foreign exchange wall extending from the end wall toward the casing so as to be enclosed therefrom, and the cover body has a suction port communicating with the opening, and a foreign exchange surface facing the inner circumferential surface of the pump casing. It provides a pump device, characterized in that the female screw and the male screw to be screwed to the surface is formed.

With the above configuration, in the pump device of the present invention, the cover body of the cover means is threaded to the vortex chamber, and the exchange wall surrounds the pump casing from the outside, so that the output of the motor body or the flow rate of the pump increases. Even so, it is possible to suppress the outer wall of the pump casing from being expanded and deformed outward, so that the cover means is prevented from rupturing from the opening, and the service life can be increased.

1 is a cross-sectional view showing a pump device according to an embodiment of the present invention.
FIG. 2 is a partially enlarged view of FIG. 1.
3 is a perspective view showing the embodiment.

Hereinafter, the pump device of the present invention will be described in detail with reference to the explanatory diagram.

1 and 2, the pump device according to the embodiment of the present invention includes a motor 10, a casing 20, a cover means 30, a first sealing 40, and It is equipped with 2 sealing 50.

The motor 10 includes a mounting means 11, a motor body 12 that is fixed to the mounting means 11 and rotates a pump shaft 13 extending along an axis L, and the motor body 12 It is configured to have an impeller 14 installed on the pump shaft so as to rotate together with the pump shaft 13 of the.

The casing 20 surrounds the vortex chamber 221 accommodating the impeller 14, and at the same time, a pump casing 22 having an opening 24 formed in the extending direction of the pump shaft 13, and a mounting means 11 It extends from the motor main body 12 to the pump casing 22 through the tube, and is provided with a hollow cylindrical cylindrical casing 21 that surrounds the accommodation space 211 through which the pump shaft 13 is inserted.

The pump casing 22 has an inner circumferential surface 222 adjacent to the opening 24 and facing the vortex chamber 221, an outer circumferential surface 223 positioned on the opposite side of the inner circumferential surface 222, and an outer circumferential surface from the inner circumferential surface 222 It extends to 223 and has an end surface 224 facing the cover means 30 side, and a discharge port 23 communicating with the vortex chamber 221 and penetrating the pump casing 22, and on the inner peripheral surface 222, a female screw (225) is formed. In addition, the pump casing 22 has a first ring groove 226 formed on an outer circumferential surface 223, and a second ring 227 formed at an end surface 224, respectively.

The cover means 30 is preferably made of an engineering plastic having acid resistance and alkali resistance, such as PP, GFRPP, PVDF, CFRETFE, and the like. The cover means 30 is installed in the casing 20 so as to cover the opening 24, the end wall 33 contacting the end surface 224 of the pump casing 22, and the pump casing 22 from the end wall 33 The cover body 31 formed in a dish shape as if fitted into the opening 24 formed in the, and the exchange wall 32 extending from the end wall 33 toward the casing 20 so as to surround the outer circumferential surface 223 from the outside, It is defined by the cover body 31, the exchange wall 32, and the end wall 33, and has a concave groove 34 into which the pump casing 22 can be inserted.

The cover body 31 has a suction port 313 in communication with the opening 24 and an exchange surface 311 facing the inner circumferential surface 222 of the pump casing 22, and a female thread 225 on the exchange surface 311 ) And a male screw 312 to be screwed is formed.

The cover body 31 also has an upper surface 314 facing the impeller 14 and a bottom surface 315 located on the opposite side of the upper surface 314, and a plurality of reinforcing ribs on the bottom surface 315 ( While 317 is formed, a plurality of concave depressions 316 are formed between the plurality of reinforcing ribs 317, and the suction port 313 penetrates from the top surface 314 to the bottom surface 315. Is formed.

The first sealing 40 is inserted into the first ring groove 226 and interposed so that the exchange wall 32 contacts, thereby securing airtightness between the outer circumferential surface 223 and the exchange wall 32.

The second sealing 50 is inserted into the second ring groove 227 and interposed so as to contact the end wall 33 to secure airtightness between the end surface 224 and the end wall 33.

Hereinafter, the structure and operation of the present embodiment will be described in more detail.

1 and 2, when the assembly of the pump device of the present invention is completed, the motor 10 and the casing 20 are firmly connected, and the impeller 14 is connected to the pump shaft 13 It is installed and accommodated in the vortex chamber 221 at the same time. The cover means 30 is securely fixed to the pump casing 22 by screwing the male screw 312 with the female screw 225.

When the motor body 12 of the motor 10 is started, the impeller 14 is driven to rotate together with the pump shaft 13, and the chemical solution sucked from the suction port 313 by the impeller 14 is discharged. 14) can be flowed to transport the chemical solution.

When transporting the chemical solution, the cover body 31 of the cover means 30 is threaded to the vortex chamber 221, and the exchange wall 32 surrounds the pump casing 22 from the outside. Accordingly, even if the output of the motor body 12 or the flow rate of the pump increases, the outer wall of the pump casing 22 is prevented from being expanded and deformed outward, so that the cover means 30 is prevented from bursting from the opening 24. Is prevented, and as a result, it becomes possible to extend the service life of the pump device.

Therefore, by using the concave cross-sectional structure defined by the cover body 31, the exchange wall 32 and the end wall 33 of the cover means 30 of the present invention, the pump device has high tensile strength at high pressure and high temperature. The effect of preventing the casing 20 from being deformed can be obtained by exerting (抗張力).

In addition, the airtightness between the outer circumferential surface 223 and the exchange wall 32 is secured by the interposition of the first sealing 40 fitted in the first ring groove 226, and is also fitted in the second ring groove 227. The leakage of fluid can be reliably prevented by securing airtightness between the end surface 224 and the end wall 33 by the interposition of the second sealing 50. Therefore, for example, even if the outer wall of the pump casing 22 is expanded and deformed outward, the watertightness can be secured by the first sealing 40 being provided.

In addition, the structural strength of the cover body 31 is reinforced by the plurality of reinforcing ribs 317 formed in the cover means 30, and a plurality of concave depressions formed between the plurality of reinforcing ribs 317 The weight reduction of the cover means 30 by the portion 316 can be achieved, and deformation of the cover body 31 can be effectively prevented.

As described above, since the structure of the pump device of the present embodiment is simple, it is easy to assemble, and it is possible to effectively prevent rupture of the casing of the pump.

As described above, preferred embodiments of the present invention have been described, but the present invention is not limited thereto, and all formulas and equivalent configurations are included as various configurations included within the spirit and scope of the broadest interpretation.

According to the above configuration, in the pump device according to the present invention, when the cover body of the cover means is mounted in the vortex chamber, and the exchange wall surrounds the pump casing from the outside, for example, the output of the motor body or the flow rate of the pump increases. Even if the outer wall of the pump casing expands outward and deforms is suppressed, the cover means can be prevented from rupturing from the opening and the service life can be increased, and thus there is a possibility of industrial use.

10 motor
11 Mounting means
12 Motor body
13 pump shaft
14 impeller
20 casing
21 cylindrical casing
211 accommodation space
22 pump casing
221 Vortex Chamber
222
223 outer circumferential surface
224 cross section
225 female thread
226 first ring groove
227 second ring groove
23 outlet
24 openings
30 cover means
31 cover body
311 Foreign exchange side
312 male thread
313 inlet
314 top
315 bottom surface
316 concave depression
317 Reinforcing ribs
32 Foreign Exchange Wall
33 wall
34 concave groove
40 first sealing
50 second sealing
L axis

Claims (4)

At the same time enclosing a motor body for rotationally driving a pump shaft extending along an axis, a motor having an impeller installed on the pump shaft so as to rotate with the pump shaft of the motor body, and a vortex chamber accommodating the impeller. A casing having a pump casing formed with an opening toward the extending direction of the pump shaft,
A cover means attached to the casing to cover the opening
As a pump device having,
The pump casing has an inner circumferential surface adjacent to the opening and facing the vortex chamber, an outer circumferential surface located on the opposite side of the inner circumferential surface, and a cross section extending from the inner circumferential surface to the outer circumferential surface to face the cover means, and the inner circumferential surface A female thread is formed on the
The cover means
An end wall contacting the end face of the pump casing,
A cover body formed in a dish shape so as to fit into the opening formed in the pump casing from the end wall,
It has a foreign exchange wall extending toward the casing from the end wall so as to surround the outer circumferential surface from the outside,
The cover body has a suction port in communication with the opening, a foreign exchange surface facing the inner circumferential surface of the pump casing, and a male screw screwed to the female screw is formed on the exchange surface. The method of claim 1,
The casing,
It extends from the motor body to the pump casing, and further has a hollow cylindrical casing surrounding an accommodation space through which the pump shaft is inserted and passed,
A first ring groove is formed on the outer circumferential surface of the pump casing,
A pump device, characterized in that, while being fitted into the first ring groove, a first sealing contacting the foreign exchange wall is interposed to secure airtightness between the outer peripheral surface and the foreign exchange wall. The method of claim 1,
The casing has a second ring groove formed in the end face of the pump casing,
A pump device, characterized in that, while being inserted into the second ring groove, a second sealing ring contacting the end wall is interposed to secure airtightness between the end surface and the end wall. The method of claim 1,
The cover body of the cover means has an upper surface facing the impeller and a bottom surface located opposite the upper surface, a plurality of reinforcing ribs formed on the bottom surface, and between the plurality of reinforcing ribs A plurality of concave depressions are formed,
The pump device, characterized in that the suction port is formed to penetrate from the top surface to the bottom surface.

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