A precise liquid-jet star wheel with a stationary spindle

Abstract

The present application relates to a precise liquid-spraying star wheel with a stationary spindle, comprising a star wheel piece, a star wheel spindle, and a bearing, wherein the star wheel piece is fixedly arranged on the circumferential outer side of the bearing, the bearing is sleeved on the star wheel spindle, the star wheel spindle is fixedly arranged and has a hole inside, a lubricating liquid is arranged inside the hole, the star wheel spindle is provided with a liquid outlet, the lubricating liquid is discharged to the bearing through the liquid outlet, the bearing is provided with a liquid drainage hole, the lubricating liquid is discharged into a groove arranged inside the star wheel piece through the liquid drainage hole of the bearing, and is discharged through the liquid outlet on the star wheel teeth circumferentially of the star wheel piece. The star wheel of the present invention has precise liquid spraying, good lubrication effect, reduced star wheel wear, and greatly reduced system liquid spraying volume.

Description

Technical Field

[0001] The present application relates to the field of single-screw compressors, and in particular to a precision liquid-injection star wheel with a stationary spindle. Background Art

[0002] In a single-screw compressor, the screw and star wheel mesh together, driving the star wheel, which then moves with the screw to compress the gas. Because compressors require tight sealing, the relative movement between the screw and star wheel causes wear. Over time, the seal between the screw and star wheel gradually becomes loose, leading to gas leakage, affecting the compression ratio and reducing efficiency. While existing technologies can spray lubricant on the star wheel teeth, which has a certain lubricating effect, the uneven spraying significantly reduces the lubrication effect. Furthermore, existing spraying methods consume a large amount of lubricant, resulting in high costs. Summary of the Invention

[0003] The present invention aims to provide a precise liquid-spraying star wheel with a stationary spindle to solve the deficiencies in the prior art. The technical problems to be solved by the present invention are achieved through the following technical solutions.

[0004] A precision liquid-spraying star wheel with a stationary spindle comprises a star wheel piece, a star wheel spindle and a bearing, wherein the star wheel piece is fixedly arranged on the circumferential outer side of the bearing, the bearing is sleeved on the star wheel spindle, the star wheel spindle is fixedly arranged and has a hole inside, lubricating liquid is arranged inside the hole, the star wheel spindle is provided with a liquid outlet, the lubricating liquid is discharged to the bearing through the liquid outlet, the bearing is provided with a drainage hole, the lubricating liquid is discharged into a groove arranged inside the star wheel piece through the drainage hole of the bearing, and is discharged through the liquid outlet on the star wheel teeth circumferentially of the star wheel piece.

[0005] Preferably, the liquid outlet of the star wheel shaft is divided into a radial liquid outlet and an axial liquid outlet, the bearing includes a bearing radial pad and a bearing axial pad, the radial liquid outlet corresponds to the position of the bearing radial pad, and the axial liquid outlet corresponds to the position of the bearing axial pad. The lubricating fluid is discharged from the radial liquid outlet to the bearing area of ​​the bearing radial pad, and is discharged from the axial liquid outlet to the bearing area of ​​the bearing axial pad.

[0006] Preferably, the liquid outlet of the groove is located on both sides of the star gear teeth.

[0007] Preferably, the bearing is a rolling bearing or a sliding bearing.

[0008] Preferably, a liquid film with a certain stiffness and damping is filled between the bearing radial pad and the star wheel shaft to achieve radial limitation of the star wheel.

[0009] Preferably, a thrust plate is provided below the planetary wheel shaft, a liquid outlet is provided on the thrust plate, and a liquid film with a certain stiffness and damping is filled between the thrust plate and the bearing axial bushing to achieve axial limitation of the planetary wheel.

[0010] Preferably, the star wheel plate is composed of a star wheel plate upper layer and a star wheel plate lower layer, the star wheel plate upper layer and the star wheel plate lower layer are respectively provided with grooves, and the upper layer and the lower layer are fixedly connected by welding.

[0011] The present invention's precise liquid-spraying starwheel with a stationary spindle reduces the number of bearings from two to one, shortening the shaft and improving operational stability. Lubricating liquid is introduced through the starwheel spindle, passing through a channel within the spindle into the bearing-bearing area, then through a drainage hole in the bearing into the internal grooves of the starwheel. Finally, the liquid outlet on the starwheel sprays into the meshing area between the starwheel and the screw for lubrication. Compared to traditional methods, this liquid spraying method is more precise, improves lubrication, reduces wear on the starwheel, and significantly reduces the amount of liquid sprayed into the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 Schematic diagram of the meshing of the screw and the star wheel of the present invention;

[0013] Figure 2 This is a schematic diagram of the star wheel assembly structure of the present invention;

[0014] Figure 3 This is a perspective view of the star wheel of the present invention;

[0015] Figure 4 For the present invention Figure 3 A partial enlarged view of

[0016] Figure 5 This is a schematic diagram of the upper layer of the star wheel of the present invention;

[0017] Figure 6 This is a schematic diagram of the lower layer of the star wheel of the present invention;

[0018] Figure 7 This is a cross-sectional view of the star wheel and bearing of the present invention;

[0019] Figure 8 A perspective view of the star wheel spindle of the present invention;

[0020] Figure 9 Schematic diagram of the bearing of the present invention.

[0021] Explanation of the accompanying reference numerals: 1-star wheel, 101-upper layer of star wheel, 102-lower layer of star wheel, 103-groove, 104-liquid outlet of star wheel; 2-star wheel spindle, 201-thrust plate, 202-radial liquid outlet, 203-axial liquid outlet; 3-bearing, 301-bearing radial pad, 302-bearing axial pad, 303-bearing drainage hole. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments.

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only 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 herein can be arranged and designed in various different configurations.

[0024] 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 as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0025] 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, it does not need to be further defined or explained in subsequent drawings.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0027] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 As shown in FIG, the overall diagram of the present application is shown, which adopts a single screw to replace the common twin screw in the prior art. Such a setting can shorten the length of the shaft and improve the operation stability.

[0030] like Figure 2-9 As shown, the star wheel of the present application includes a star wheel piece 1, a star wheel shaft 2 and a bearing 3, the star wheel piece 1 is fixedly arranged on the circumferential outside of the bearing 3, the bearing 3 is sleeved on the star wheel shaft 2, the star wheel shaft 2 is fixedly arranged and has a hole inside, the inside of the hole is filled with lubricating fluid, the liquid outlet of the star wheel shaft 2 is divided into a radial liquid outlet 202 and an axial liquid outlet 203, the bearing includes a bearing radial shell 301 and a bearing axial shell 302, the radial liquid outlet 202 corresponds to the position of the bearing radial shell 301, and the axial liquid outlet 203 corresponds to the position of the bearing axial shell 302. With such an arrangement, the lubricating fluid can be discharged from the radial liquid outlet 202 to the bearing radial shell 301's load-bearing area, and discharged from the axial liquid outlet 203 to the bearing axial shell 302's load-bearing area. The bearing drainage hole 303 of the bearing 3 communicates with the internal groove 103 of the star gear 1. The outlets of the internal groove 103 of the star gear 1 are located on both sides of the teeth of the star gear 1. The lubricating fluid discharged from the bearing drainage hole 303 enters the internal groove 103 of the star gear 1 and is then sprayed into the meshing area through the star gear outlets 104 on both sides of the star gear teeth of the star gear 1 for precise lubrication.

[0031] Furthermore, the bearing is a rolling bearing or a sliding bearing.

[0032] Furthermore, a liquid film with a certain stiffness and damping is filled between the bearing radial pad and the planetary wheel shaft to achieve radial limitation of the planetary wheel.

[0033] Furthermore, a thrust disc 201 is provided below the planetary wheel spindle 2. A liquid film with a certain stiffness and damping is filled between the thrust disc 201 and the bearing axial bushing 302 to achieve axial positioning of the planetary wheel. Furthermore, a liquid outlet is provided on the thrust disc 302.

[0034] Furthermore, during processing, the groove 103 inside the star wheel piece 1 is complex and cannot be processed as a whole. During processing, the star wheel piece needs to be divided into the star wheel piece upper layer 101 and the star wheel piece lower layer 102, and the grooves are processed separately. After the grooves are processed, the upper and lower pieces are combined into one by vacuum diffusion welding, and then the side of the star wheel is processed.

[0035] It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs.

[0036] It should be noted that the terms used herein are intended only to describe specific embodiments and are not intended to limit the exemplary embodiments described herein. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0038] In addition, the terms "comprises" and "comprising" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product, or apparatus.

[0039] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be subsequently positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0040] In the above detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols typically identify similar components, unless the context dictates otherwise. The illustrated embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments may be used, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein.

[0041] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A precision liquid-spraying star wheel with a stationary spindle, characterized by: The cam is provided with a plurality of guide wheels, each guide wheel having a plurality of guide wheels, and the guide wheels are connected to the cam by means of a plurality of guide wheels, and the guide wheels are connected to the cam by means of a plurality of guide wheels.

2. The precision liquid-spraying star wheel with a stationary spindle according to claim 1, characterized in that: The liquid outlets of the grooves are located on both sides of the star gear teeth.

3. The stationary spindle precision liquid jet star wheel according to claim 1, characterized in that: The bearing is a rolling bearing or a sliding bearing.

4. The stationary spindle precision liquid spraying star wheel according to claim 1, characterized in that: The space between the bearing radial pad and the planetary wheel shaft is filled with a liquid film with a certain stiffness and damping.

5. The stationary spindle precision liquid spraying star wheel according to claim 1, characterized in that: A thrust plate is provided below the planetary wheel shaft, a liquid outlet is provided on the thrust plate, and a liquid film with a certain stiffness and damping is filled between the thrust plate and the bearing axial bush.

6. The stationary spindle precision liquid spraying star wheel according to claim 1, characterized in that: The star wheel piece is composed of a star wheel piece upper layer and a star wheel piece lower layer. The star wheel piece upper layer and the star wheel piece lower layer are respectively provided with grooves, and the upper layer and the lower layer are fixedly connected by welding.

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