Vertical hot oil pump

Abstract

The utility model provides a vertical hot oil pump, which belongs to the technical field of pumps and comprises a pump body, a pump cover, a shaft body and an impeller, a bearing seat is arranged on the pump cover, an upper bearing body and a lower bearing body are arranged between the shaft body and the bearing seat, a bearing gland is arranged on the bearing seat, and an upper cooling cavity is formed outside the shaft body at the upper parts of the bearing gland and the bearing seat. The upper bearing body is located in the upper cooling cavity, the pump cover and the lower portion of the bearing seat form a lower cooling cavity outside the shaft body, the lower bearing body is located in the lower cooling cavity, the bearing gland is provided with an upper connector and an upper plug which are communicated with the upper cooling cavity, and the bearing seat is provided with a lower connector and a lower plug which are communicated with the lower cooling cavity; the upper and lower double-bearing structure is adopted in the shaft body, so that the shaft body has better stability during high-speed rotation, meanwhile, the independent cooling cavities are respectively arranged corresponding to the upper and lower double bearings, a cooling medium can be input to effectively cool the bearings, and the service life of the bearings is greatly prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pump technology, specifically to a vertical hot oil pump. Background Technology

[0002] A hot oil pump is a specialized mechanical device for transporting high-temperature oil products, widely used in petrochemical, metallurgical, food processing, and thermal energy systems. Its main function is to transport hot oil from storage tanks or hot oil boilers to heat exchangers, reactors, or other equipment to ensure the normal operation of the system. Hot oil pumps are typically manufactured using high-temperature resistant materials, possessing excellent sealing and corrosion resistance to withstand high-temperature, high-pressure, and chemically corrosive working environments. Depending on different operational requirements, hot oil pumps can be categorized into various types, such as centrifugal pumps and gear pumps, and are characterized by high efficiency, stability, and durability. Traditional hot oil pumps tend to accumulate heat during operation, leading to increased temperatures in components such as bearings, which affects the pump's service life. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a vertical hot oil pump.

[0004] The technical solution adopted by this utility model is as follows: This application provides a vertical hot oil pump, including a pump body, a pump cover, a shaft, and an impeller. The pump body and the pump cover form a pump cavity. The impeller is rotatably disposed in the pump cavity. A bearing seat is disposed on the pump cover. One end of the shaft is connected to a motor, and the other end passes through the bearing seat and is connected to the pump cover and the impeller. An upper bearing body and a lower bearing body are disposed between the shaft and the bearing seat. A bearing cap is disposed on the bearing seat. An upper cooling cavity is formed outside the shaft body by the bearing cap and the upper part of the bearing seat. The upper bearing body is located in the upper cooling cavity. A lower cooling cavity is formed outside the shaft body by the pump cover and the bearing seat. The lower bearing body is located in the lower cooling cavity. An upper interface and an upper plug communicating with the upper cooling cavity are disposed on the bearing cap. A lower interface and a lower plug communicating with the lower cooling cavity are disposed on the bearing seat.

[0005] In some embodiments, a motor fan cover is also included, wherein a motor fan blade is provided above the bearing cover on the shaft, the motor fan blade rotates synchronously with the shaft and is located inside the motor fan cover, and an air outlet is provided at the lower end of the motor fan cover.

[0006] In some embodiments, a sealing cavity is provided on the bearing housing at the lower end of the upper cooling cavity, and a sealing structure for sealing the lower end of the upper cooling cavity is provided in the sealing cavity. The sealing structure includes an upper dynamic seal, a dynamic seal retaining ring and a lower dynamic seal, and the sealing structure is fixed in the sealing cavity by a first inner snap ring.

[0007] In some embodiments, the bearing cap is provided with a first pressing ring portion facing the upper bearing body, the first pressing ring portion extends into the upper end of the bearing seat and abuts against the upper bearing body, and a first sealing gasket is provided between the bearing cap and the upper end of the bearing seat.

[0008] In some embodiments, a second pressure ring is provided at the upper end of the pump cover, the second pressure ring extends into the lower end of the bearing seat and abuts against the lower bearing body, and a second sealing gasket is provided between the pump cover and the lower end of the bearing seat.

[0009] In some embodiments, a sealing groove is provided between the pump cover near the pump chamber and the shaft, and a plurality of oil seals are provided in the sealing groove and fixed in the sealing groove by a second inner retaining spring. The lower cooling chamber extends downward to the sealing groove and is sealed by the oil seals.

[0010] In some embodiments, the pump cover is provided with a connecting frame, and the bearing seat is provided with a fixing plate and connected to the connecting frame through the fixing plate.

[0011] In some embodiments, the pump body is provided with a medium inlet and a medium outlet, which are located on the same axis and have the same diameter.

[0012] In some embodiments, the pump body is provided with a channel portion communicating with the medium inlet and the pump chamber, and the bottom of the impeller is provided with a positioning ring portion, the positioning ring portion and the channel portion being coaxially arranged and having a gap.

[0013] In some embodiments, the lower cooling cavity extends upward to a sealing structure and forms a seal therebetween.

[0014] The beneficial effects of this utility model are as follows: The shaft body of this utility model adopts an upper and lower double bearing structure, which makes it more stable when rotating at high speed. At the same time, independent cooling chambers are provided for the upper and lower double bearings respectively, which can input cooling medium to effectively cool the bearings and greatly extend the service life of the bearings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0016] Figure 1 This is a cross-sectional view of a vertical hot oil pump according to the present invention.

[0017] Figure 2This is a partial cross-sectional view of a vertical hot oil pump according to the present invention. Figure 1 ;

[0018] Figure 3 This is a partial cross-sectional view of a vertical hot oil pump according to the present invention. Figure 2 ;

[0019] Figure 4 This is a partial cross-sectional view of a vertical hot oil pump according to the present invention. Figure 3 . Detailed Implementation

[0020] The following description provides specific application scenarios and requirements for this specification, intended to enable those skilled in the art to make and use the contents of this specification. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] Secondly, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components and should not be construed as limiting the embodiments of this application.

[0023] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral constructions; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts.

[0024] Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] Regarding the accompanying drawings of this application, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not necessarily drawn to scale.

[0026] like Figures 1 to 4 As shown in the figure, this specification provides a vertical hot oil pump. The vertical design allows for direct installation on pipelines, similar to a valve, resulting in a small footprint, fewer pipeline restrictions, and significantly reduced installation and maintenance space. It includes a pump body 1, a pump cover 2, a shaft 3, and an impeller 4. The pump body 1 and pump cover 2 form a pump chamber 5, and the impeller 4 is rotatably mounted within the pump chamber 5. A bearing seat 6 is provided on the pump cover 2. One end of the shaft 3 is connected to a motor, and the other end passes through the bearing seat 6 and connects to the pump cover 2 and the impeller 4. An upper bearing body 7 and a lower bearing body 8 are provided between the shaft 3 and the bearing seat 6. The shaft 3 adopts a double bearing structure, which provides better stability during high-speed rotation. The bearing housing 6 is provided with a bearing cover 9. The upper part of the bearing cover 9 and the bearing housing 6 forms an upper cooling cavity 10 outside the shaft body 3. The upper bearing body 7 is located in the upper cooling cavity 10. The pump cover 2 and the lower part of the bearing housing 6 form a lower cooling cavity 11 outside the shaft body 3. The lower bearing body 8 is located in the lower cooling cavity 11. The bearing cover 9 is provided with an upper interface and an upper plug 12 that communicate with the upper cooling cavity 10. The bearing housing 6 is provided with a lower interface and a lower plug 13 that communicate with the lower cooling cavity 11. Each of the upper and lower double bearings is provided with an independent cooling cavity, which can input cooling medium to effectively cool the corresponding bearings and greatly extend the service life of the bearings.

[0027] Furthermore, it also includes a motor fan cover 14, which can be connected to the bearing cover 9 or the bearing seat 6. The shaft 3 is located above the bearing cover 9 and a motor fan blade 15 is provided. The motor fan blade 15 rotates synchronously with the shaft 3 and is located inside the motor fan cover 14. The lower end of the motor fan cover 14 is provided with an air outlet 16. When the pump is operating, the motor fan blade 15 rotates with the shaft 3 and generates air that blows through the air outlet 16 to cool the bearing cover 9, the bearing seat 6, the pump cover 2, and other parts, thereby further improving the service life of the pump.

[0028] A sealing cavity 17 is provided on the bearing housing 6 at the lower end of the upper cooling cavity 10. A sealing structure for sealing the lower end of the upper cooling cavity 10 is provided in the sealing cavity 17. The sealing structure includes an upper dynamic seal 18, a dynamic seal retaining ring 19, and a lower dynamic seal 20. The sealing structure is fixed in the sealing cavity 17 by a first inner retaining spring 21. The lower cooling cavity 11 extends upward to the sealing structure and forms a seal thereon. With this arrangement, the upper dynamic seal 18 forms a reliable seal on the lower end of the upper cooling cavity 10, and the lower dynamic seal 20 forms a reliable seal on the upper end of the lower cooling cavity 11.

[0029] In some embodiments, the bearing cap 9 is provided with a first pressing ring 22 facing the upper bearing body 7. The first pressing ring 22 extends into the upper end of the bearing seat 6 and abuts against the upper bearing body 7. A first sealing gasket 23 is provided between the bearing cap 9 and the upper end of the bearing seat 6, thereby forming a reliable seal on the upper end of the upper cooling cavity 10 and positioning the upper bearing body 7 to prevent it from moving axially.

[0030] In some embodiments, a second pressure ring 24 is provided at the upper end of the pump cover 2. The second pressure ring 24 extends into the lower end of the bearing seat 6 and abuts against the lower bearing body 8. A second sealing gasket 25 is provided between the pump cover 2 and the lower end of the bearing seat 6, thereby positioning the lower bearing body 8 and preventing it from moving axially.

[0031] In some embodiments, a sealing groove 26 is provided between the pump cover 2 near the pump chamber 5 and the shaft 3. A plurality of oil seals 27 are provided within the sealing groove 26 and fixed within it by a second inner retaining spring 28. The lower cooling chamber 11 extends downward to the sealing groove 26 and forms a seal through the oil seals 27. Figure 3 As shown, two high-temperature resistant oil seals 27 are installed in the sealing groove 26 to prevent the cooling medium in the lower cooling chamber 11 from flowing into the pump chamber 5 and contaminating the transported medium.

[0032] The lower cooling cavity 11 extends along the axial direction of the shaft 3 at both the upper and lower ends, covering most of the shaft 3, which significantly improves the cooling effect on the shaft 3.

[0033] In some embodiments, a connecting frame 29 is provided on the pump cover 2, and a fixing plate 30 is provided on the bearing seat 6 and connected to the connecting frame 29 through the fixing plate 30, thereby improving the reliability of the overall pump structure.

[0034] In some embodiments, the pump body 1 is provided with a medium inlet 31 and a medium outlet 32. The medium inlet and the medium outlet are located on the same axis and have the same diameter, which changes the previous limitations of large inlet and small outlet and small diameter. The design is standardized, the structure is reasonable, the degree of universality is high, and the installation on the pipeline is greatly facilitated.

[0035] In some embodiments, the pump body 1 is provided with a channel portion 33 connecting the medium inlet 31 and the pump chamber 5, and the bottom of the impeller 4 is provided with a positioning ring portion 34. The positioning ring portion 34 and the channel portion 33 are coaxially arranged and have a gap 35. Figure 4 As shown, there are gaps at all three positions to avoid friction between the impeller 4 and the pump body 1, but also to prevent the impeller 4 from shifting significantly.

[0036] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure is presented by way of example only and is not restrictive. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be made by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0037] Furthermore, it should be understood that in the foregoing description of the embodiments of this application, various features are combined in a single embodiment, drawing, or description for the purpose of simplifying the understanding of a feature. However, this does not mean that the combination of these features is necessary, and those skilled in the art may readily identify some of the devices as separate embodiments when reading this application. That is, the embodiments in this application can also be understood as an integration of multiple sub-embodiments. It is also valid when each sub-embodiment contains fewer than all the features of a single foregoing disclosed embodiment.

[0038] Finally, it should be understood that the embodiments disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed herein are merely examples and not limitations. Those skilled in the art can adopt alternative configurations to implement the applications in this application based on the embodiments in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. A vertical hot oil pump, characterized in that, The pump includes a pump body, a pump cover, a shaft, and an impeller. The pump body and pump cover form a pump cavity, and the impeller is rotatably disposed within the pump cavity. A bearing housing is disposed on the pump cover. One end of the shaft is connected to a motor, and the other end passes through the bearing housing and is connected to the pump cover and the impeller. An upper bearing body and a lower bearing body are disposed between the shaft and the bearing housing. A bearing cap is disposed on the bearing housing. An upper cooling cavity is formed outside the shaft by the bearing cap and the upper part of the bearing housing, and the upper bearing body is located within the upper cooling cavity. A lower cooling cavity is formed outside the shaft by the pump cover and the bearing housing, and the lower bearing body is located within the lower cooling cavity. An upper interface and an upper plug communicating with the upper cooling cavity are disposed on the bearing cap, and a lower interface and a lower plug communicating with the lower cooling cavity are disposed on the bearing housing.

2. A vertical hot oil pump according to claim 1, characterized in that, It also includes a motor fan cover, wherein the shaft is located above the bearing cover and a motor fan blade is provided. The motor fan blade rotates synchronously with the shaft and is located inside the motor fan cover. An air outlet is provided at the lower end of the motor fan cover.

3. A vertical hot oil pump according to claim 1, characterized in that, A sealing cavity is provided on the bearing housing at the lower end of the upper cooling cavity. A sealing structure for sealing the lower end of the upper cooling cavity is provided in the sealing cavity. The sealing structure includes an upper dynamic seal, a dynamic seal retaining ring, and a lower dynamic seal. The sealing structure is fixed in the sealing cavity by a first inner snap ring.

4. A vertical hot oil pump according to claim 1, characterized in that, The bearing cap is provided with a first pressing ring portion facing the upper bearing body. The first pressing ring portion extends into the upper end of the bearing seat and abuts against the upper bearing body. A first sealing gasket is provided between the bearing cap and the upper end of the bearing seat.

5. A vertical hot oil pump according to claim 1, characterized in that, The upper end of the pump cover is provided with a second pressure ring, which extends into the lower end of the bearing seat and abuts against the lower bearing body. A second sealing gasket is provided between the pump cover and the lower end of the bearing seat.

6. A vertical hot oil pump according to claim 1, characterized in that, A sealing groove is provided between the pump cover near the pump chamber and the shaft. Multiple oil seals are provided in the sealing groove and are fixed in the sealing groove by a second inner snap ring. The lower cooling chamber extends downward to the sealing groove and is sealed by the oil seal.

7. A vertical hot oil pump according to claim 1, characterized in that, The pump cover is provided with a connecting frame, and the bearing seat is provided with a fixing plate and connected to the connecting frame through the fixing plate.

8. A vertical hot oil pump according to claim 1, characterized in that, The pump body is provided with a medium inlet and a medium outlet, which are located on the same axis and have the same diameter.

9. A vertical hot oil pump according to claim 8, characterized in that, The pump body is provided with a channel section that connects the medium inlet and the pump chamber, and the bottom of the impeller is provided with a positioning ring section. The positioning ring section and the channel section are coaxially arranged and have a gap.

10. A vertical hot oil pump according to claim 3, characterized in that, The lower cooling chamber extends upward to the sealing structure and forms a seal therebetween.

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