Cooling assembly and centrifugal pump

Abstract

The utility model relates to the technical field of pumps, and discloses a cooling assembly and a centrifugal pump, the cooling assembly comprises a jacket, and the jacket is sleeved on the outer wall of a bearing box corresponding to a bearing part; a cooling space is formed between the inner wall of the jacket and the outer wall of the bearing box to accommodate a cooling medium; the jacket also has an inlet and an outlet in communication with the cooling space. The centrifugal pump includes a cooling assembly and a bearing housing. According to the technical scheme, the technical problem that a bearing of a high-lift centrifugal pump in the related technology is prone to heating can be solved, the heat dissipation effect is excellent, the structure is simple, and the cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pump especially relates to a cooling assembly and centrifugal pump. BACKGROUND

[0002] The core function of the centrifugal pump is to realize the delivery, pressure increase and circulation of liquid through centrifugal force, and its high efficiency and adaptability make it an indispensable fluid machine in modern industry and life.

[0003] However, the high-lift centrifugal pump is prone to bearing heating, which greatly shortens the service life of the bearing. In related technologies, there are ways to reduce oil temperature by adding copper pipes in the bearing box oil pool, but the structure is complex and the effect is poor. There are also redesigned bearing boxes to increase cooling components, which have good heat dissipation effect but poor universality. UTILITY MODEL CONTENT

[0004] The application discloses a cooling assembly and a centrifugal pump to solve the technical problem of bearing heating in high-lift centrifugal pumps in related technologies, and has excellent heat dissipation effect and simple structure and low cost.

[0005] To solve the above problems, the utility model adopts the following technical scheme:

[0006] Firstly, the application discloses a cooling assembly, which comprises a jacket, and the jacket is sleeved on the outer wall of the bearing part of the bearing box.

[0007] The inner wall of the jacket and the outer wall of the bearing box form a cooling space to accommodate the cooling medium.

[0008] The jacket also has an inlet and an outlet communicating with the cooling space.

[0009] In further technical solutions, the contact part of the outer wall of the bearing box and the jacket is sleeved with a plurality of sealing rings.

[0010] In further technical solutions, the cooling space extends in a ring shape along the circumference of the jacket.

[0011] In further technical solutions, the jacket and the bearing box are connected in the axial direction of the jacket.

[0012] And / or, the jacket and the bearing box are connected in the circumferential direction of the jacket.

[0013] In further technical solutions, the jacket is connected to the bearing box by a positioning pin.

[0014] Secondly, the application discloses a centrifugal pump, which comprises a bearing box and the cooling assembly of the first aspect.

[0015] The technical scheme adopted by the utility model can achieve the following beneficial effects:

[0016] The cooling assembly of the present application is characterized in that the cooling medium enters the cooling space from the inlet, exchanges heat with the bearing, and carries away the heat of the bearing to flow out of the cooling space from the outlet. By continuously injecting the cooling medium into the cooling space, the temperature of the bearing is continuously lowered, and the temperature of the bearing is prevented from being too high. Moreover, the present application sets the jacket on the outer wall of the bearing box, and the bearing can be cooled without changing the structure of the bearing box, and the present application has the advantages of simple structure and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is a partial cross-sectional view of the centrifugal pump disclosed in some embodiments of the present application;

[0019] Figure 2 is Figure 1 is an enlarged view of A in FIG. 1;

[0020] Figure 3 is Figure 1 is an enlarged view of B in FIG. 1.

[0021] In the drawings:

[0022] 100-jacket, 110-cooling space, 120-inlet, 130-outlet, 140-sealing ring, 150-positioning pin; 200-centrifugal pump, 210-bearing box, 220-bearing, 230-shaft. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described in detail below. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0024] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the objects before and after are in an "or" relationship.

[0025] The inventor found in use that the axial force generated during high-speed operation is large when running at high speed, which easily causes the bearing 220 to heat up, greatly shortening the service life of the bearing 220. In the related art, there are ways to reduce the oil temperature by adding copper pipes in the oil pool of the bearing box 210, but the structure is complex and the effect is poor. There are also redesigned bearing boxes 210 to increase cooling components, which have good heat dissipation effect but poor universality.

[0026] The cooling assembly and centrifugal pump 200 provided by the present application will be described in detail below in combination with the accompanying drawings Figures 1 to 3 and specific embodiments and their application scenarios.

[0027] Some embodiments of the present application disclose a cooling assembly, comprising a jacket 100.

[0028] As shown in Figure 2 and Figure 3 , the jacket 100 is sleeved on the outer wall of the bearing box 210 corresponding to the bearing 220. By arranging the jacket 100 on the outer wall of the bearing box 210, the bearing 220 can be cooled without changing the structure of the bearing box 210, which has the advantages of simple structure and low cost.

[0029] As shown in Figure 2 and Figure 3 , a cooling space 110 is formed between the inner wall of the jacket 100 and the outer wall of the bearing box 210 to accommodate a cooling medium. By forming the cooling space 110 between the inner wall of the jacket 100 and the outer wall of the bearing box 210, the cooling medium can enter the cooling space 110 to cool the part of the bearing box 210 corresponding to the bearing 220, thereby reducing the temperature of the bearing 220 and increasing the service life of the bearing 220.

[0030] It should be noted that the cooling medium can be a liquid or a gas, which can be flexibly arranged according to the use requirements, and the present embodiment does not limit this.

[0031] As shown in Figure 2 and Figure 3As shown, the jacket 100 also has an inlet 120 and an outlet 130 in communication with the cooling space 110, the inlet 120 also circumscribes a cooling medium source, so that the cooling medium can continuously enter the cooling space 110 from the inlet 120 and then flow out of the cooling space 110 through the outlet 130, forming a fluid to continuously take away the heat generated by the bearing 220 to better dissipate the heat of the bearing 220.

[0032] Compared with the cooling mode of the related art using a cooling copper pipe, the jacket 100 of the embodiment does not need to use a pressing plate and various specifications of bolts, nuts and other parts, and has a simpler structure and lower cost. Moreover, the jacket 100 is arranged on the outer wall of the bearing box 210, without changing the structure of the bearing box 210, and has better universality.

[0033] As shown in Figure 2 and Figure 3 , the outer wall of the bearing box 210 and the contact part of the jacket 100 are respectively sleeved with a plurality of sealing rings 140. The sealing rings 140 are arranged at the contact part of the outer wall of the bearing box 210 and the jacket 100, to ensure good sealing of the connection part of the jacket 100 and the bearing box 210, and avoid overflow of the cooling medium in the cooling space 110.

[0034] In the embodiment, the sealing rings 140 can be 2, 3, 4 or more, and can be flexibly arranged according to actual use requirements, which are not limited in the embodiment.

[0035] As shown in Figure 2 and Figure 3 , the cooling space 110 extends in a ring shape along the circumference of the jacket 100. The ring-shaped cooling space 110 increases the contact area of the cooling medium and the corresponding bearing 220 part of the bearing box 210, and thus better exchanges heat with the bearing 220.

[0036] As shown in Figure 2 and Figure 3 , the jacket 100 and the bearing box 210 are connected in the axial direction of the jacket 100. By connecting the jacket 100 and the bearing box 210 in the axial direction of the jacket 100, the relative displacement of the jacket 100 in the axial direction of the bearing box 210 can be limited, and thus the cooling space 110 can always correspond to the part of the bearing box 210 provided with the bearing 220, to better dissipate the heat of the bearing 220.

[0037] As shown in Figure 2 and Figure 3 , the jacket 100 and the bearing box 210 are connected in the circumferential direction of the jacket 100. By connecting the jacket 100 and the bearing box 210 in the circumferential direction of the jacket 100, the rotation of the jacket 100 relative to the bearing box 210 can be limited, to better fix the jacket 100 on the bearing box 210.

[0038] Specifically, as shown in Figure 2 and Figure 3 The clamping sleeve 100 is connected with the bearing box 210 by the positioning pin 150.

[0039] As shown in Figure 2 and Figure 3 The clamping sleeve 100 can be multiple, and is arranged on the outer wall of the bearing box 210 corresponding to the bearing 220. Specifically, the number of the clamping sleeve 100 can be flexibly set according to the number of the bearing 220 in the bearing box 210, and the embodiment is not limited in this regard.

[0040] Some embodiments of the present application also disclose a centrifugal pump 200, comprising a bearing box 210 and a cooling assembly.

[0041] Specifically, as shown in Figure 2 Figure 3 Figure 1 The centrifugal pump 200 further comprises a bearing 220 and a shaft body 230, the shaft body 230 is arranged in the bearing box 210, the bearing 220 is sleeved on the shaft body 230, and is fixed to the inner wall of the bearing box 210.

[0042] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements recited, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the statement "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0043] In addition, it should be pointed out that the scope of the method and device in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but can also include performing the functions in a substantially simultaneous manner or in a reverse order according to the functions involved, for example, the described method can be performed in an order different from the described order, and various steps can also be added, omitted, or combined. In addition, the features described with reference to some examples can be combined in other examples.

[0044] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A cooling assembly, characterized by The jacket is sleeved on the outer wall of the bearing box corresponding to the bearing part; The inner wall of the jacket and the outer wall of the bearing box form a cooling space to accommodate cooling medium; The jacket also has an inlet and an outlet in communication with the cooling space.

2. A cooling assembly according to claim 1, wherein, The contact part of the outer wall of the bearing box and the jacket is sleeved with a plurality of sealing rings.

3. A cooling assembly according to claim 1, wherein, The cooling space extends along the circumference of the jacket in a ring shape.

4. A cooling assembly according to claim 1, wherein, The jacket and the bearing box are limitedly connected in the axial direction of the jacket. And / or, the jacket and the bearing box are limitedly connected in the circumferential direction of the jacket.

5. A cooling assembly according to claim 4, wherein, The jacket is limitedly connected with the bearing box by a positioning pin.

6. A centrifugal pump characterized by The bearing box and the cooling assembly of any one of claims 1-5.

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