A quick-release structure for pump shaft bearing

Abstract

The present invention belongs to the technical field of sewage pumps, and discloses a quick-release structure for a pump shaft bearing, including a pump shaft body, wherein a plurality of grooves are provided on the top of the pump shaft body, and a plurality of keys for sleeve-connecting bearings are detachably connected in the plurality of grooves. The pump shaft bearing quick-release structure is provided with a plurality of grooves on the top of the pump shaft body and equipped with a plurality of keys. During installation, the plurality of keys are fixed in the plurality of grooves, and then the bearings are sleeved on the outer wall of the plurality of keys. When the bearing needs to be replaced, the bearings can be directly pulled out by removing the plurality of keys, and a puller is no longer needed, which is convenient and quick, and can greatly improve the efficiency of maintenance.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage pumps, and in particular relates to a quick-disassembly structure of a pump shaft bearing. Background Art

[0002] Submersible sewage pump is a pump product that is connected to a motor and submerged in liquid to work. Compared with general horizontal pumps or vertical sewage pumps, submersible sewage pumps have the following advantages:

[0003] (1) Compact structure and small footprint. Since the submersible sewage pump works under the liquid, it can be directly installed in the sewage pool. There is no need to build a special pump room to install the pump and machine, which can save a lot of land and infrastructure costs.

[0004] (2) Easy installation and maintenance. Small submersible sewage pumps can be installed freely, and large submersible sewage pumps are generally equipped with automatic coupling devices for automatic installation, which makes installation and maintenance quite convenient.

[0005] (3) Long continuous operation time. Since the pump and motor are coaxial, the shaft is short, and the rotating parts are light, the load (radial) on the bearing is relatively small, and the service life is much longer than that of ordinary pumps.

[0006] (4) There is no cavitation damage and water diversion. The latter point in particular brings great convenience to the operators.

[0007] (5) Low vibration and noise, low motor temperature rise, and no pollution to the environment.

[0008] Due to the above advantages, submersible sewage pumps have been increasingly valued by people, and their application scope has become wider and wider, from being used to simply transport clean water to being able to transport various domestic sewage, industrial wastewater, construction site drainage, liquid feed, etc. It plays a very important role in municipal engineering, industry, hospitals, construction, restaurants, water conservancy construction and other industries.

[0009] However, although the existing submersible pumps have many advantages mentioned above, they still have some shortcomings. Since the sewage pump is used under liquid; the medium it transports is a mixed liquid containing solid materials; the pump and the motor are very close; the pump is arranged vertically, and the weight of the rotating parts is in the same direction as the water pressure borne by the impeller. These problems make the requirements of the sewage pump in terms of sealing, motor load capacity, bearing arrangement and selection higher than those of ordinary sewage pumps. This leads to the need to bring large tools such as pullers for disassembling the bearings on the pump shaft when repairing the sewage pump, which is very inconvenient. Summary of the invention

[0010] In order to solve one or more of the above-mentioned technical problems existing in the prior art, the present invention provides a pump shaft bearing quick-release structure, which is intended to replace the transmission puller and realize the quick disassembly of the upper bearing of the pump shaft.

[0011] In order to achieve the above object, the present invention adopts the following technical solutions:

[0012] A pump shaft bearing quick-release structure comprises a pump shaft body. The top of the pump shaft body is provided with several types of grooves. Several types of keys for sleeve bearings are detachably connected in the several types of grooves.

[0013] Furthermore, the several types of grooves include a top surface groove arranged on the top surface of the pump shaft body and two side wall grooves respectively connected to the two ends of the top surface groove; the several types of keys include a top surface clamping strip matching the top surface groove and side clamping strips respectively matching the corresponding side wall grooves, and the top surface clamping strip and the side clamping strip are an integrated structure; a bearing limiter is provided on the outer side of the lower edge of each side clamping strip.

[0014] Furthermore, the top of the pump shaft body is a cylindrical structure, and the outer wall of the side clamping strip is an arc structure that matches the top side wall of the pump shaft body.

[0015] Furthermore, the two side wall grooves have the same geometric dimensions and are symmetrically distributed on both sides of the top surface groove.

[0016] Furthermore, the several types of keys and the several types of grooves are fixedly connected by bolts.

[0017] Furthermore, a first threaded hole is opened in the middle of the top surface groove, and a second threaded hole is set in the middle of the top surface clamping strip at a position corresponding to the first threaded hole. The several-type key and the several-type groove are connected to the first threaded hole by bolts passing through the second threaded hole.

[0018] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects or advantages:

[0019] The pump shaft bearing quick-release structure provided by the present invention is achieved by opening several types of grooves on the top of the pump shaft body and equipping several types of keys. During installation, the several types of keys are fixed in the several types of grooves, and then the bearing is sleeved on the outer wall of the several types of keys. When the bearing needs to be replaced, the bearing can be directly pulled out by removing the several types of keys, and there is no need to use a puller. This is convenient and quick, and can greatly improve the efficiency of maintenance.

[0020] With reference to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents.

[0021] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0022] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 A schematic structural diagram of a pump shaft bearing quick-release structure provided by an embodiment of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the pump shaft body in an embodiment of the present invention;

[0026] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 4 Schematic diagram of the structure of several types of keys in an embodiment of the present invention;

[0028] Figure 5 1 is a top view of several types of keys in an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the invention is usually placed when in use, or is the orientation or position relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in specific circumstances. The drawings in the embodiments of the present invention clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. In addition, the terms "first" and "second" are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0035] like Figure 1-Figure 5 As shown, an embodiment of the present invention provides a pump shaft bearing quick-release structure, including a pump shaft body 1, a plurality of grooves 2 are provided on the top of the pump shaft body 1, and a plurality of keys 3 for sleeve bearings 4 are detachably connected in the plurality of grooves 2.

[0036] In the specific implementation process, there are many structures and shapes of the type groove 2 and the type key 3. In a further implementation scheme, the type groove 2 in the embodiment of the present invention includes a top surface groove 21 arranged on the top surface of the pump shaft body 1 and two side wall grooves 22 respectively connected to the two ends of the top surface groove 21; the type key 3 includes a top surface clamping strip 31 matching the top surface groove 21 and side clamping strips 32 matching the corresponding side wall grooves 22, and the top surface clamping strip 31 and the side clamping strip 32 are an integrated structure; a bearing limiter 33 is provided on the outer side of the lower edge of each side clamping strip 32.

[0037] In the specific implementation process, in order to facilitate the installation of the bearing 4, in a further implementation scheme, the top of the pump shaft body 1 in the embodiment of the present invention is a cylindrical structure, and the outer wall of the side clamping strip 32 is an arc structure that matches the top side wall of the pump shaft body 1. Setting the pump shaft body 1 to a cylindrical structure and the outer wall of the side clamping strip 32 to an arc structure that matches the top side wall of the pump shaft body 1 can facilitate the sleeve connection of the bearing 4 to the pump shaft body 1.

[0038] The two side wall grooves 22 may have different structures or the same structure. In order to facilitate the installation of the type key 3 in the specific implementation process, in a further embodiment, the two side wall grooves 22 in the embodiment of the present invention have the same geometric dimensions and are symmetrically distributed on both sides of the top surface groove 21. The two side wall grooves 22 have the same structure and dimensions, and the type key 3 does not need to be specifically compared with the side clamping strip 32 and the side wall groove 22 during installation, and can be quickly installed.

[0039] In the specific implementation process, there are many ways to connect the type key 3 and the type groove 2. In a further implementation scheme, the type key 3 and the type groove 2 in the embodiment of the present invention are fixedly connected by bolts. Specifically, in the embodiment of the present invention, a first threaded hole 23 is opened in the middle of the top surface groove 21, and a second threaded hole 34 is set in the middle of the top surface clamping strip 31 at a position corresponding to the first threaded hole 23. The type key 3 and the type groove 2 are connected by bolts 5 passing through the second threaded hole 34 and being screwed to the first threaded hole 23.

[0040] The method of using the pump shaft bearing quick-release structure provided by the embodiment of the present invention is as follows:

[0041] When installing the bearing 4 , first insert the key 3 into the groove 2 , then sleeve the bearing 4 on the outer wall of the key 3 , and finally pass the bolt 5 through the second threaded hole 34 and screw it to the first threaded hole 23 to tighten it.

[0042] When the bearing 4 needs to be replaced, the bolt is rotated to separate it from the first threaded hole 23, and then the bolt 5 is pulled to drive the key 3 to pull out the bearing.

[0043] The pump shaft bearing quick-release structure provided in the embodiment of the present invention can effectively replace the transmission puller, realize the quick removal of the upper bearing of the pump shaft, and greatly improve the efficiency of maintenance.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pump shaft bearing quick-release structure, comprising a pump shaft body, characterized in that: The top of the pump shaft body is provided with a plurality of grooves, and a plurality of keys for sleeve bearings are detachably connected in the plurality of grooves; the plurality of grooves include a top groove arranged on the top surface of the pump shaft body and two side wall grooves respectively connected with the two ends of the top groove; the plurality of keys include a top clamping strip matching the top groove and a side clamping strip respectively matching the corresponding side wall grooves, and the top clamping strip and the side clamping strip are an integrated structure; a bearing stopper is arranged on the outer side of the lower edge of each side clamping strip; the plurality of keys are fixedly connected to the plurality of grooves by bolts; a first threaded hole is provided in the middle of the top groove, and a second threaded hole is arranged at the middle of the top clamping strip at a position corresponding to the first threaded hole, and the plurality of keys and the plurality of grooves are connected by bolts passing through the second threaded hole and being screwed to the first threaded hole; the top of the pump shaft body is a cylindrical structure, and the outer wall of the side clamping strip is an arc structure matching the top side wall of the pump shaft body; When installing the bearing, first insert the key into the groove, then put the bearing on the outer wall of the key, and finally pass the bolt through the second threaded hole and screw it to the first threaded hole to tighten it; when the bearing needs to be replaced, rotate the bolt to separate it from the first threaded hole, and then pull the bolt to drive the key to pull out the bearing.

2. The pump shaft bearing quick-release structure according to claim 1, characterized in that: The two side wall grooves have the same geometric dimensions and are symmetrically distributed on both sides of the top surface groove.

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