Combined cooling bearing body structure of high-temperature submerged pump

Abstract

The utility model relates to a combined cooling bearing body structure of a high-temperature submerged pump. The combined cooling bearing body structure comprises an upper fan, a lower fan, a bearing body assembly and a shaft, the bearing body assembly and a discharge base of the high-temperature submerged pump are fixedly installed together in a transition fit mode. A bottom plate, a cooling cavity, a water inlet, an upper dustproof disc, a water outlet and a lower dustproof disc are arranged on the bearing body assembly; the cooling cavity is an annular cooling cavity and surrounds a circle, away from the shaft, of the bearing, and the water inlet and the water outlet are both formed in the cooling cavity. Cooling media circulate in the cooling cavity, the cooling effect of the bearing body is good, and the running stability of the pump is high. The upper dustproof disc and the lower dustproof disc are designed on the upper portion and the lower portion of the bearing body respectively, the upper dustproof disc, the lower dustproof disc and an original labyrinth seal form combined seal, and the sealing effect is good. And the bearing body is independently and firmly fixed on the discharge seat, and is provided with a lock washer, so that the stability of the bearing body in a high-temperature environment is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cooling bearing body structure, concretely relates to a high temperature liquid pump combination cooling bearing body structure that bearing body's cooling effect is good and stable and reliable operation. BACKGROUND

[0002] The bearing body structure of prior art, participate Figure 1 , usually by lower fan 1, bearing body assembly 2, shaft 3, upper fan 4 etc., bearing body assembly in bearing lubrication by high temperature grease, by upper and lower fan cooling, its main existence as follows:

[0003] Cooling mode is single, especially some for medium temperature is greater than 500 DEG C working condition, and the cooling effect is relatively poor, often will appear because of bearing body cooling deficiency and lead to bearing temperature high condition, and then influence pump's stable operation and service life.

[0004] High temperature leads to grease thin, and its sealing structure is simple and makes lubricating grease flow out of bearing body, and lubricating grease loss increases, leads to on-site environment difference and needs frequently to add lubricating grease, and maintenance is troublesome, and cost is high.

[0005] Bearing body is not fixed on the discharge seat separately, but is integrally fixed through bearing pressure cover long bolt, and this structure is on the one hand to the machining precision requirement higher, on the other hand, bearing body exists the risk of displacement in the operation process, and then influence rotor concentricity. UTILITY MODEL CONTENTS

[0006] In view of above problem, the main purpose of the utility model is to provide a high temperature liquid pump combination cooling bearing body structure that bearing body's cooling effect is good and stable and reliable operation.

[0007] The utility model is through the following technical scheme to solve above technical problem: a high temperature liquid pump combination cooling bearing body structure, the high temperature liquid pump combination cooling bearing body structure includes: upper fan, lower fan, bearing body assembly, shaft, bearing body assembly and the discharge seat of high temperature liquid pump are fixedly installed together in the way of transition fit.

[0008] Bearing body assembly is provided with bottom plate, cooling cavity, water inlet, upper dustproof disc, water outlet, lower dustproof disc.

[0009] Cooling cavity is annular cooling cavity, and is encircled on the bearing and is away from the shaft, and bottom plate is arranged at the bottom of cooling cavity, so that cooling cavity is closed, and water inlet and water outlet are arranged on cooling cavity, and upper dustproof disc and lower dustproof disc are fixed on the upper and lower positions of bearing body assembly respectively and are fixed on the shaft.

[0010] In the embodiment of the utility model, the water inlet and the water outlet are symmetrically distributed on the cooling cavity, and the water inlet and the water outlet are distributed at 180°.

[0011] In the embodiment of the utility model, the bearing body assembly and the circumference of the fixed surface of the discharge seat are fixed by a plurality of bolts, the bearing body assembly is fixed on the discharge seat, and a lock washer is installed.

[0012] In the embodiment of the utility model, the upper dustproof disc and the lower dustproof disc are fastened on the shaft by screws and rotate with the shaft.

[0013] In the embodiment of the utility model, the surface of the upper dustproof disc and the lower dustproof disc in contact with the bearing body assembly is provided with a labyrinth seal.

[0014] The utility model discloses a high-temperature liquid pump combined cooling bearing body structure, which has the following advantages compared with the common technology.

[0015] 1. The annular cooling cavity is added to the bearing body, cooling medium circulates in the cooling cavity, the cooling effect of the bearing body is good, the pump has high running stability, and the service life of the bearing and the pump is long.

[0016] 2. In the bearing body assembly, the upper part and the lower part of the bearing body are respectively designed with the upper dustproof disc and the lower dustproof disc, the upper and lower dustproof discs rotate with the shaft, form combined sealing with the original labyrinth seal, have good sealing effect, effectively prevent lubricating oil from leaking, reduce the loss of lubricating grease, and reduce the operation cost.

[0017] 3. The bearing body is fixed on the discharge seat stably and is provided with a lock washer, so that the stability of the bearing body in the high-temperature environment is ensured, the bearing body is effectively prevented from being displaced during operation, and the operation reliability of the pump is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the common existing product.

[0019] Figure 2 It is a whole structural schematic view of the utility model.

[0020] The following is the name corresponding to the mark in the utility model:

[0021] Lower fan 1, bearing body assembly 2, shaft 3, upper fan 4; bottom plate 301, cooling cavity 302, water inlet 303, upper dustproof disc 304, water outlet 305, lower dustproof disc 306. DETAILED DESCRIPTION

[0022] The technical scheme of the utility model will be described in detail below with reference to the preferred embodiments and the accompanying drawings.

[0023] Figure 2 It is a whole structure schematic view of the utility model. Figure 2 As shown in the utility model provides a kind of high temperature under pump combination cooling bearing body structure, the high temperature under pump combination cooling bearing body structure includes: upper fan 4, lower fan 1, bearing body assembly 2, shaft 3;Bearing body assembly 2 and the discharge seat of high temperature under pump are fixedly installed together in the way of transition fit;Bearing body assembly 2 is provided with bottom plate 301, cooling cavity 302, water inlet 303, upper dustproof disc 304, water outlet 305, lower dustproof disc 306, cooling cavity 302 is annular cooling cavity, encircles the bearing and the side far from shaft, bottom plate 301 is arranged at the bottom of cooling cavity 302, so that cooling cavity 302 is closed;Water inlet 303 and water outlet 305 are all arranged on cooling cavity 302;Upper dustproof disc 304 and lower dustproof disc 306 are fixed at the upper and lower positions of bearing body assembly 2 respectively and are fixed on shaft 3.

[0024] The bearing body and the discharge seat in bearing body assembly are designed as transition fit, and a plurality of bolts are designed in the circumferential direction, the bearing body is fixed on the discharge seat reliably, and an anti-loosening washer is installed, to ensure the stability of the bearing body in high temperature environment, the design can effectively avoid displacement of the bearing body during operation, and improve the reliability of pump operation.

[0025] Cooling cavity is designed on the bearing body, and the cooling cavity is annular along the whole circle of the bearing, to ensure uniform distribution of water flow;The water inlet and the water outlet on the bearing body are distributed at 180 °.

[0026] To facilitate the casting of bearing body, the bottom of annular cooling cavity is open, and bottom plate 301 is fixed on the bearing body assembly body by welding, so that cooling cavity 302 is closed.

[0027] Cooling medium (which can be water, or other cooling medium) enters from water inlet 303, and flows out from water outlet 305 after circulating in cooling cavity 302, so as to take away most of the heat of the bearing body.

[0028] Upper and lower fans are designed on the upper and lower parts of the bearing body respectively, to take away the part of heat not taken away by forced cooling, so that the pump runs stably and reliably, and the service life is prolonged.

[0029] Upper and lower dustproof discs form combined sealing with the original structure of labyrinth seal, the sealing effect is good, dust and impurities can be effectively organized into the bearing body, on the other hand, lubricating oil leakage can be effectively prevented, the loss of lubricating grease is reduced, and the operation and maintenance cost is reduced.

[0030] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application. These changes and improvements all fall within the scope of the claimed present application, and the scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A high temperature submersible pump combination cooled bearing body structure, characterized by: The high-temperature submersible pump combined cooling bearing body structure comprises: an upper fan, a lower fan, a bearing body assembly, and a shaft; the bearing body assembly is fixedly installed together with a discharge seat of the high-temperature submersible pump in a transition fit manner; The bearing body assembly is provided with a bottom plate, a cooling cavity, a water inlet, an upper dustproof disc, a water outlet, and a lower dustproof disc; The cooling cavity is an annular cooling cavity, which surrounds a circle of the bearing away from the shaft; the bottom plate is arranged at the bottom of the cooling cavity, so that the cooling cavity is closed; the water inlet and the water outlet are arranged on the cooling cavity; the upper dustproof disc and the lower dustproof disc are respectively fixed at upper and lower positions of the bearing body assembly and are fixed on the shaft.

2. The high-temperature submersible pump combination cooled bearing body structure of claim 1, wherein: The water inlet and the water outlet are symmetrically distributed on the cooling cavity and are distributed at 180°.

3. The high-temperature submersible pump combination-cooled bearing body structure of claim 1, wherein: The bearing body assembly and the fixed surface of the discharge seat are fixed by a plurality of bolts in the circumferential direction, so as to fix the bearing body assembly on the discharge seat and install a lock washer.

4. The high-temperature submersible pump combination-cooled bearing body structure of claim 1, wherein: The upper dustproof disc and the lower dustproof disc are fastened on the shaft by screws and rotate with the shaft.

5. The high-temperature submersible pump combination-cooled bearing body structure of claim 1, wherein: The surfaces of the upper dustproof disc and the lower dustproof disc, which contact the bearing body assembly, are provided with labyrinth seals.

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