Chemical internal gear pump adopting rolling bearing as idle wheel bearing

Abstract

The utility model discloses a chemical internal gear pump with an idle wheel bearing adopting a rolling bearing, the idle wheel bearing in the chemical internal gear pump adopts the rolling bearing, the rolling bearing is made of a material which does not react with a chemical medium, and by adopting the rolling bearing, the abrasion of the bearing and the heat generated by friction can be greatly reduced; therefore, the service life of the pump is prolonged; media in the pump are prevented from being solidified and carbonized; the idler wheel bearing adopts a combination form of a roller bearing in the middle and sliding bearings on the two sides, the lubricating channels are arranged on the sliding bearings, and compared with the sliding bearings, the rolling bearings can reduce abrasion and heat productivity. The combined idle wheel bearing can better store liquid and drain media in the rolling bearing, and heat productivity can be further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical internal gear pumps, in particular to a chemical internal gear pump whose idler bearing adopts a rolling bearing. Background Art

[0002] The internal gear pump has the advantages of small size, light weight, simple structure, easy manufacturing, low price, reliable operation, good self-priming performance, insensitive to oil contamination, and easy maintenance.

[0003] For applications involving chemical media, idler bearings typically use non-reactive sliding bearings, such as copper, alloy steel, graphite, ceramic, silicon carbide, and tungsten carbide. However, in high-pressure and high-viscosity applications, the sliding bearing's surface carries a heavy load, generating high friction. Furthermore, the high viscosity of the medium results in poor lubricity and difficulty in penetrating the sliding bearing to lubricate and remove frictional heat. This can lead to rapid wear and a shortened lifespan for the idler pin and the paired sliding bearing. In severe cases, the high temperature generated by friction can cause the high-viscosity medium to solidify, damaging the idler bearing. Utility Model Content

[0004] In response to the problems in the related art, the present application discloses a chemical internal gear pump with an idler bearing using a rolling bearing, which solves the problems in the related art such as the idler pin being difficult to lubricate, the bearing wearing quickly, the life being short, and the high-temperature medium solidifying and damaging the idler bearing.

[0005] To achieve the above objectives, this application provides the following technical solutions:

[0006] A chemical internal gear pump with an idler bearing using a rolling bearing comprises a pump housing, wherein a main shaft is provided in the pump housing, the main shaft is dynamically connected to a driving gear, the driving gear is meshingly connected to an idler, the idler is connected to an idler bearing at a non-meshing surface, and the idler bearing comprises a rolling bearing.

[0007] As a further solution of the present application: the idler bearing includes a rolling bearing, sliding bearings are provided on both sides of the rolling bearing, and a lubrication channel is provided on the sliding bearing.

[0008] In summary, the beneficial effects of this application are:

[0009] The idler bearing in the chemical internal gear pump adopts a rolling bearing. The rolling bearing material is made of a material that does not react with the chemical medium. The use of rolling bearings can greatly reduce bearing wear and reduce the heat generated by friction, thereby extending the life of the pump and preventing the medium in the pump from solidifying and carbonizing.

[0010] The idler bearing adopts a combination of a roller bearing in the middle and sliding bearings on both sides. The sliding bearing is provided with a lubrication channel. The rolling bearing can reduce wear and heat generation relative to the sliding bearing. Combined with the sliding bearing with a lubrication channel, the combined idler bearing can better store liquid and drain the medium in the rolling bearing, which can further reduce heat generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application.

[0012] In the attached figure:

[0013] Figure 1 This is an exploded view of a chemical internal gear pump in which the idler gear of this application is an external gear.

[0014] Figure 2 This is a schematic diagram of the internal structure of a chemical internal gear pump in which the idler gear is an external gear.

[0015] Figure 3 Exploded view of a chemical internal gear pump in which the idler gear is a pinion gear for this application.

[0016] Figure 4 This is a schematic diagram of the internal structure of a chemical internal gear pump in which the idler gear is a small gear.

[0017] Notes on reference numerals:

[0018] 1. Main shaft; 2. Key; 3. Drive gear; 4. Idle gear; 5. Idle gear bearing; 6. Pump casing; 7. Idle gear pin; 8. Main bearing; 9. Pump cover. DETAILED DESCRIPTION

[0019] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0020] It should be noted that all directional indications in the embodiments (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, the descriptions of "first" and "second" in the embodiments are only for descriptive purposes and do not specifically refer to the order or ranking, nor are they used to limit the present application. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0022] In order to further understand the content, features and effects of the present application, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0023] Example 1, as Figure 1-2 The internal gear pump structure shown is an external idler gear:

[0024] The main shaft 1 drives the driving gear 3 in the pump housing 1 to rotate through the key 2, thereby driving the meshing idler gear 4 to rotate. The outer side of the idler gear 4 is positioned on the idler gear bearing 5, and the idler gear bearing 5 is positioned in the pump housing 1. The idler gear bearing 5 is a rolling bearing.

[0025] Example 2, as Figure 3-4 The internal gear pump structure shown is a pinion gear with an idler gear:

[0026] The main shaft 1 drives the driving gear 3 to rotate through the key 2, thereby driving the meshing idler gear 4 to rotate. The inner side of the idler gear 4 is positioned on the idler gear bearing 5. The idler gear bearing 5 is positioned in the pump cover 9 through the idler gear pin 7. The idler gear bearing 5 is a rolling bearing.

[0027] The above two embodiments achieve the purpose of reducing wear and heat generation by changing the traditional idler bearing from a sliding bearing to a rolling bearing, thereby extending the life of the pump and preventing the medium in the pump from solidifying and carbonizing.

[0028] In addition, the idler bearing 5 in the above two embodiments includes a rolling bearing located in the center and a combination of sliding bearings on both sides of the rolling bearing to reduce wear and heat generation. At the same time, the sliding bearing is provided with a lubrication channel to remove heat.

[0029] The lubrication channel connects the plain bearing to the medium in the pump.

[0030] The idler bearing 5 adopts a combination of a roller bearing in the middle and sliding bearings on both sides. The sliding bearing is provided with a lubrication channel. The rolling bearing can reduce wear and heat generation relative to the sliding bearing. Combined with the sliding bearing provided with a lubrication channel, the combined idler bearing can better store liquid and drain the medium in the rolling bearing, which can further reduce heat generation.

[0031] Finally, it should be noted that the above disclosure is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application. The scope of the present application is limited only by the appended claims.

Claims

1. A chemical internal gear pump with an idler bearing using a rolling bearing, comprising a pump housing, characterized in that: A main shaft is provided in the pump housing, the main shaft is dynamically connected to the driving gear, the driving gear is meshed with the idler gear, the idler gear is connected to the idler gear bearing at the non-meshing surface, and the idler gear bearing includes a rolling bearing; Sliding bearings are combined on both sides of the rolling bearing, and lubrication channels are provided on the sliding bearings.

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