Independent pull rod structure for impeller

Abstract

The utility model discloses an independent pull rod structure for an impeller, which relates to the technical field of impeller parts, comprises a diversion cap, a locking nut, a compressor impeller, an independent pull rod and a high-speed gear shaft, and is characterized in that the left end of the high-speed gear shaft is provided with a spigot; the right end of the independent pull rod is inserted into the spigot and fixedly connected with the high-speed gear shaft through the spigot, the compressor impeller is arranged on the independent connecting rod in a sleeving mode and located on the left side of the high-speed gear shaft, the left side of the rod wall of the independent connecting rod is in threaded connection with a locking nut, and the locking nut is located on the left side of the compressor impeller. The pull rod has the advantages of being capable of well solving the problem that rigidity is seriously reduced due to the fact that the pull rod is too long, good in connecting effect, high in practicability and the like.

Description

Technical Field

[0001] This utility model relates to the technical field of impeller parts, specifically to a separate tie rod structure for an impeller. Background Technology

[0002] Typically, the tie rod connecting the high-speed gearbox and the centrifugal compressor impeller is an integral tie rod. As the high-speed gear shaft is an integral part, the tie rod structure makes it thin and long due to the high precision requirements of high-speed gear shaft machining, which severely reduces rigidity. It is difficult to ensure the machining accuracy of the parts during processing. With poor rigidity, the scrap rate of high-precision shaft products is relatively high, which poses a high risk to the company's cost control. Therefore, we propose a separate tie rod structure for the impeller. Utility Model Content

[0003] The purpose of this invention is to provide a separate tie rod structure for an impeller.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a separate tie rod structure for an impeller, comprising a guide cap, a locking nut, a compressor impeller, a separate tie rod, and a high-speed gear shaft, characterized in that: a stop is provided at the left end of the high-speed gear shaft, the right end of the separate tie rod is inserted into the stop and fixedly connected to the high-speed gear shaft through the stop, the compressor impeller is sleeved on the separate tie rod, the compressor impeller is located to the left of the high-speed gear shaft, and a locking nut is threadedly connected to the left side of the tie rod wall, the locking nut being located to the left of the compressor impeller.

[0005] As a further embodiment of this utility model: the stop is provided with an internal thread, and the right end of the wall of the individual tie rod is provided with an external thread, wherein the right end of the individual tie rod is threadedly inserted into the stop.

[0006] As a further embodiment of this utility model: a positioning washer is fitted on the wall of the individual pull rod, and the positioning washer is located between the locking nut and the compressor impeller.

[0007] As a further embodiment of this utility model: the left end of the separate pull rod is threaded with a guide cap, the inner sidewall of the guide cap is provided with an annular groove, and the annular groove portion of the guide cap is sleeved on the locking nut.

[0008] As a further embodiment of this utility model, the left end of the flow guide cap is bullet-shaped.

[0009] Compared with the prior art, the beneficial effects of this utility model by adopting the above technical solution are as follows:

[0010] 1. The utility model discloses a single pull rod structure for the impeller of a centrifugal compressor, which can effectively solve the problem of reduced rigidity caused by the excessively long pull rod, and has the advantages of good connection effect and strong practicability.

[0011] Therefore, the utility model discloses a single pull rod structure for the impeller of a centrifugal compressor, which can effectively solve the problem of reduced rigidity caused by the excessively long pull rod, and has the advantages of good connection effect and strong practicability.

[0012] The other advantages, objects and features of the utility model will be described in the subsequent description to some extent, and will be apparent to those skilled in the art based on the following description or can be taught from the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model discloses an installation structure schematic diagram in embodiment.

[0014] In the drawing: 1, flow guide cap; 2, lock nut; 3, positioning gasket; 4, compressor impeller; 5, single pull rod; 6, high speed gear shaft. DETAILED DESCRIPTION

[0015] The specific embodiments of the utility model will be further described below with reference to the drawings, and it should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute the limitation to the utility model.

[0016] In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as there is no conflict.

[0017] Please refer to the attached drawings Figure 1The utility model discloses a single pull rod structure for impeller, including guide flow 1, locking nut 2, compressor impeller 4, single pull rod 5 and high -speed gear shaft 6, the left end of high -speed gear shaft 6 is set up with the stopper, the right end of single pull rod 5 inserts the stopper and is fixedly connected through the stopper with high -speed gear shaft 6, compressor impeller 4 is set up on single connecting rod, compressor impeller 4 is located in the left side of high -speed gear shaft 6, the rod wall left side of single connecting rod is connected with locking nut 2, locking nut 2 is located in the left side of compressor impeller 4.

[0018] In an embodiment of the utility model, the stopper is provided with internal thread, the rod wall right end of single pull rod 5 is provided with external thread, and the right end of single pull rod 5 is screwed in the stopper.

[0019] In an embodiment of the utility model, positioning washer 3 is set on the rod wall of single pull rod 5, and the positioning washer 3 is located between locking nut 2 and compressor impeller 4.

[0020] In an embodiment of the utility model, the left end of single pull rod 5 is threadedly connected with guide flow 1, an annular groove is formed in the inner side wall of guide flow 1, and the annular groove of guide flow 1 is partially sleeved on locking nut 2.

[0021] In an embodiment of the utility model, the left end of guide flow 1 is in the shape of a bullet.

[0022] Working principle:

[0023] The utility model adds a single pull rod structure for impeller between high -speed gear shaft 6 and impeller, the length of high -speed gear shaft 6 can be shortened greatly, the rigidity of high -speed gear shaft 6 is greatly enhanced, the machining precision is easily guaranteed, and the single pull rod and the impeller can be conveniently disassembled and maintained. Single pull rod 5 and high -speed gear shaft 6 are connected through internal and external threads, the pull rod and high -speed gear shaft 6 are positioned by radial stopper at the connection, the bottom of the threaded connection is positioned by section, the structure belongs to 2 fulcrum positioning, and the structure is stable and reliable. The device structure can well solve the problem that the rigidity is greatly reduced due to the excessive length of the pull rod, has the characteristics of good connection effect and strong practicality, and the coaxial tolerance requirement of the parts is realized by end face positioning and radial positioning of single pull rod 5 and high -speed gear shaft 6 through the structure, the structure is convenient to disassemble, facilitates the machining of high -speed gear shaft 6, and the rigidity of high -speed gear shaft 6 is greatly improved after the thinnest pull rod part is removed, and the machining precision requirement of the parts can be well maintained in the hobbing and gear grinding process.

[0024] Therefore, the single pull rod structure for centrifugal compressor impeller 4 has the characteristics of simple structure, convenient disassembly, good part machining effect, low cost and strong practicality.

[0025] The above front, rear, left, right, top and bottom are based on the drawings in the description Figure 1 As a standard, the side facing the observer is defined as front, the left side of the observer is defined as left, and so on.

[0026] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0027] It should be noted that the device structure of the present application and the drawings mainly describe the principle of the present application, and the setting of the power mechanism, power supply system and control system of the device is not completely described in the design principle technology, and under the premise that the above-mentioned technical personnel understand the principle of the present application, the specific power mechanism, power supply system and control system can be clearly known, and the control mode of the application file is automatically controlled by the controller, and the control circuit of the controller can be realized by simple programming of the technical personnel in the field.

[0028] The standard parts used therein can be purchased from the market, and can be ordered according to the description and drawings, and the specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art, and the mechanical parts and equipment adopt the conventional type in the prior art, and the components known to the technical personnel in the field, and the structure and principle thereof can be known by the technical personnel through technical manual or through conventional experimental method.

[0029] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the described embodiments.

[0030] For those skilled in the art, various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and still fall within the scope of protection of the present application.

Claims

1. A separate pull rod structure for an impeller, comprising a guide flow nose (1), a locking nut (2), a compressor impeller (4), a separate pull rod (5) and a high-speed gear shaft (6), characterized in that: The left end of the high-speed gear shaft (6) is provided with a stop, the right end of the single pull rod (5) is inserted into the stop and fixedly connected with the high-speed gear shaft (6) through the stop, the compressor impeller (4) is sleeved on the single pull rod, the compressor impeller (4) is located at the left side of the high-speed gear shaft (6), the left side of the rod wall of the single pull rod is threadedly connected with a locking nut (2), and the locking nut (2) is located at the left side of the compressor impeller (4). The stop is provided with an internal thread, and the right end of the rod wall of the single pull rod (5) is provided with an external thread, and the right end of the single pull rod (5) is threadedly inserted into the stop.

2. A single pull rod structure for an impeller according to claim 1, characterized in that: A positioning washer (3) is sleeved on the rod wall of the single pull rod (5), and the positioning washer (3) is located between the locking nut (2) and the compressor impeller (4).

3. The single pull rod structure for an impeller according to claim 1, characterized in that: The left end of the single pull rod (5) is threadedly connected with a flow guide nose (1), the inner side wall of the flow guide nose (1) is provided with an annular groove, and the annular groove of the flow guide nose (1) is partially sleeved on the locking nut (2).

4. A single pull rod structure for an impeller according to claim 3, characterized in that: The left end of the flow guide nose (1) is provided in a bullet head shape.

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