Bilateral asymmetric molded line compressor screw rotor

Abstract

The utility model discloses a bilateral asymmetric molded line compressor screw rotor, and belongs to the technical field of rotor tooth types. Comprising a shell assembly, a rotor assembly and a hoisting assembly, the shell assembly comprises a shell, a first rotating rod is arranged on the side wall of the shell, a lubricating oil injection opening is formed in the outer wall of the shell, the rotor assembly comprises a male rotor arranged at the tail end of the first rotating rod, a female rotor is arranged on the outer wall of the male rotor, and the hoisting assembly comprises a fixing plate arranged on the outer wall of the shell; a sliding frame is arranged above the fixing plate, a sliding block is arranged on the inner wall of the sliding frame, a threaded pipe is arranged above the sliding block, and a fixing ring is arranged above the threaded pipe. The male rotor and the female rotor with the tooth number ratio of 5: 6 are matched with each other to conduct threaded transmission to drive the compressor to work, zero-sliding transmission is achieved, rotor abrasion is reduced, transmission efficiency is improved, the sliding frame is matched with the sliding blocks to adjust the threaded pipe and the fixing ring to proper positions, the compressor can be conveniently installed, and the device is high in convenience.

Description

Technical Field

[0001] The utility model relates to the technical field of rotor tooth profiles, and more specifically, to a bilateral asymmetric profile compressor screw rotor. Background Technique

[0002] Generally, a screw compressor has a pair of spiral rotors that mesh with each other in a compressor cavity that encloses them. One is a male rotor and the other is a female rotor, forming a cyclic working process of intake, compression, and exhaust. The composition curves of the profiles of the male rotor and the female rotor directly affect the efficiency and performance of the compressor, and also directly affect the machinability of the rotors. Therefore, to solve these problems, we propose a bilateral asymmetric profile compressor screw rotor to solve the problems.

[0003] The patent document with the publication number CN216894894U in the prior art provides a twin-screw compressor rotor. This twin-screw compressor rotor drives the compressor to work through the male rotor with a tooth ratio of 4:6 cooperating with the female rotor for screw drive.

[0004] Although this twin-screw compressor rotor has many beneficial effects, there are still the following problems: the structures of the male and female rotors of this twin-screw compressor rotor are single, the profile is not a bilateral asymmetric profile, the male and female rotors are not designed at the 6:4 position of the center connection line, and it cannot reduce rotor wear well, and the transmission efficiency needs to be improved. Therefore, a bilateral asymmetric profile compressor screw rotor is proposed for the above problems. Content of the Utility Model

[0005] 1. Technical Problems to be Solved

[0006] The purpose of the utility model is to provide a bilateral asymmetric profile compressor screw rotor to solve the problems raised in the above background technique, namely, the structures of the male and female rotors of the existing twin-screw compressor rotor are single, the profile is not a bilateral asymmetric profile, the male and female rotors are not designed at the 6:4 position of the center connection line, and it cannot reduce rotor wear well, and the transmission efficiency needs to be improved.

[0007] 2. Technical Solution

[0008] A bilateral asymmetric profile compressor screw rotor includes a housing assembly, a rotor assembly, and a lifting assembly;

[0009] Among them,

[0010] The housing assembly includes a housing. A first rotating rod is provided on the side wall of the housing, and a lubricating oil injection port is provided on the outer wall of the housing;

[0011] The rotor assembly includes a male rotor provided at the end of the first rotating rod. A female rotor is provided on the outer wall of the male rotor;

[0012] The lifting component includes a fixing plate disposed on the outer wall of the housing. Above the fixing plate, there is a sliding frame. Inside the sliding frame, there are sliders. Above the sliders, there is a threaded tube, and above the threaded tube, there is a fixing ring.

[0013] Preferably, an exhaust end bearing seat is provided on the side wall of the housing. Above the exhaust end bearing seat, there is a bearing, and a second rotating rod is provided on the inner circumferential wall of the bearing.

[0014] Preferably, the side wall of the housing is provided with a mounting hole, and a first fixing bolt is provided on the side wall of the housing.

[0015] Preferably, a second fixing bolt is provided above the fixing plate, a third fixing bolt is provided on the side wall of the sliding frame, and a locking nut is provided at the end of the third fixing bolt.

[0016] Preferably, a threaded rod is provided above the slider, and a threaded hole is provided on the side wall of the slider.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present utility model are as follows:

[0019] In the present utility model, a male rotor and a female rotor with a tooth ratio of 5:6 cooperate with each other for screw drive to drive the compressor to work, achieving zero-slip drive, reducing rotor wear, improving transmission efficiency. While ensuring the minimum clearance, an unequal clearance design is adopted to ensure the efficient compression process of helium, with high working efficiency.

[0020] Secondly, the fixing plate fixes the sliding frame to the housing. The sliding frame cooperates with the slider to adjust the threaded tube and the fixing ring to a suitable position. Multiple fixing rings cooperate to stably lift the compressor by using the fixing rings during the installation of the compressor, facilitating the installation of the compressor, and the device has high convenience. Brief description of the drawings

[0021] Figure 1 It is a schematic view of the right side of the overall structure of the present utility model

[0022] Figure 2 It is a schematic view of the sectional details of the housing component of the present utility model;

[0023] Figure 3 It is a schematic view of the details of the rotor component of the present utility model;

[0024] Figure 4 It is a schematic view of the details of the lifting component of the present utility model;

[0025] Figure 5 It is a schematic view of the details of the threaded rod structure of the present utility model.

[0026] Description of reference numerals in the figure: 1. Outer shell assembly; 2. Rotor assembly; 3. Lifting assembly; 110. Outer shell; 120. First rotating rod; 130. Lubricating oil injection port; 140. Exhaust end bearing seat; 150. Bearing; 160. Second rotating rod; 210. Male rotor; Female rotor; 230. Mounting hole; First fixing bolt; 310. Fixing plate; 320. Second fixing bolt; 330. Sliding frame; 340. Slide block; 350. Threaded tube; 360. Fixing ring; 370. Third fixing bolt; 380. Locking nut; 390. Threaded rod; 391. Threaded hole. Detailed implementation manner

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0028] In the description of the present utility model, the meaning of "plural" is two or more, unless otherwise specifically defined.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, terms such as "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] Please refer to Figures 1-5 The present utility model provides a technical solution:

[0031] A bilateral asymmetric linear compressor screw rotor, the outer shell assembly 1 includes an outer shell 110. A first rotating rod 120 is installed on the side wall of the outer shell 110, and a lubricating oil injection port 130 is installed on the outer wall of the outer shell 110. The first rotating rod 120 can be externally connected to a motor. The motor cooperates with the first rotating rod 120 to rotate the male rotor 210 to drive the female rotor 220 for screw transmission. The lubricating oil injection port 130 can inject lubricating oil to play a lubricating role.

[0032] The rotor assembly 2 includes a male rotor 210 installed at the end of the rotating rod one 120. The outer wall of the male rotor 210 is threadedly connected to the female rotor 220. The male rotor 210 can cooperate with the female rotor 220 for threaded transmission to drive the compressor to work. The profiles of the male rotor and the female rotor are composed of a quadratic curve and its envelope. The profile is a bilateral asymmetric profile. The tooth ratio of the male and female rotors is 6:5, the meshing center distance is 270 mm, and the meshing clearance is 0.05 - 0.12 mm. The clearance between the male and female rotors is composed of male and female spiral surfaces, which ensures the formation of a sealing oil film. The male and female rotors are designed at the 6:5 position of the center line, achieving zero-slip transmission, reducing rotor wear, and improving transmission efficiency. While ensuring the minimum clearance, an unequal clearance design is adopted, which ensures the efficient compression process of helium and can improve work efficiency.

[0033] The hoisting assembly 3 includes a fixing plate 310 installed on the outer wall of the housing 110. A sliding frame 330 is installed above the fixing plate 310. The inner wall of the sliding frame 330 is slidably connected to a slider 340. The upper part of the slider 340 is threadedly connected to a threaded pipe 350. A fixing ring 360 is welded above the threaded pipe 350. The fixing plate 310 can fix the sliding frame 330 to the housing 110. The sliding frame 330 cooperating with the slider 340 can slide the threaded pipe 350 and the fixing ring 360. The threaded pipe 350 cooperating with the threaded rod 390 fixes the fixing ring 360 to the slider. Multiple fixing rings 360 can cooperate with a hoisting device to lift the compressor, facilitating the installation of the compressor.

[0034] Specifically, an exhaust end bearing seat 140 is installed on the side wall of the housing 110. A bearing 150 is installed above the exhaust end bearing seat 140. The inner wall of the circumference of the bearing 150 is rotatably connected to a rotating rod two 160. The exhaust end bearing seat 140 can install the bearing 150, and the bearing 150 facilitates the rotation of the rotating rod two 160. The rotating rod two 160 is connected to the female rotor.

[0035] Furthermore, an installation hole 230 is opened on the side wall of the housing 110, and a fixing bolt one 240 is threadedly connected to the side wall of the housing 110. The installation hole 230 cooperating with the fixing bolt one 240 can splice the exhaust end bearing seat 140 and the housing 110.

[0036] It should be noted that a fixing bolt two 320 is threadedly connected above the fixing plate 310, and a fixing bolt three 370 is installed on the side wall of the sliding frame 330. The end of the fixing bolt three 370 is threadedly connected to a locking nut 380. The fixing bolt two 320 can fix the fixing plate 310 to the housing 110. After the sliding frame 330 cooperating with the slider 340 adjusts the threaded pipe 350 and the fixing ring 360 to a suitable position, the fixing bolt three 370 cooperating with the locking nut 380 can be used to fix them.

[0037] It should be noted that a threaded rod 390 is installed above the slider 340, and a threaded hole 391 is formed in the side wall of the slider 340. The threaded rod 390 can cooperate with the threaded pipe 350 to fix the fixing ring 360 to the slider 340, and the threaded hole 391 can cooperate with the fixing bolt three 370 and the locking nut 380 to fix the hoisting assembly 3.

[0038] In addition, the accessory materials and modules involved in the present utility model are all prior arts, which can be fully realized by those skilled in the art without further elaboration. The content protected by the present utility model does not involve improvements to the internal structure and method either.

[0039] Working principle: Before use, first install the hoisting assembly 3 on the outer shell 110 by using the fixing plate 310 and the fixing bolt two 320. Then, use the sliding frame 330 and the slider 340 to slide and adjust the threaded pipe 350 and the fixing ring 360 to a suitable position, and then fix them by using the fixing bolt three 370, the locking nut 380 and the threaded hole 391. After lifting the compressor with a hoisting device and placing it at the working position, install the rotating rod one 120 on the output end of the motor. The motor drives the rotating rod one 120 to rotate, and the rotating rod one 120 drives the male rotor 210 to rotate. The male rotor 210 and the female rotor 220 perform threaded transmission, and the bearing 150 and the rotating rod two 160 cooperate to better rotate the female rotor 220, so that the compressor works.

[0040] The above shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present utility model, and are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A bilateral asymmetric profile compressor screw rotor, characterized by: It comprises a housing assembly (1), a rotor assembly (2) and a hoisting assembly (3); in, The housing assembly (1) includes a housing (110), a rotating rod (120) is provided on a side wall of the housing (110), and a lubricating oil injection port (130) is provided on an outer wall of the housing (110); The rotor assembly (2) includes a male rotor (210) disposed at the end of the first rotating rod (120), and a female rotor (220) is disposed on the outer wall of the male rotor (210); The hoisting assembly (3) comprises a fixed plate (310) arranged on the outer wall of the housing (110), a sliding frame (330) is arranged above the fixed plate (310), a slider (340) is arranged on the inner wall of the sliding frame (330), a threaded tube (350) is arranged above the slider (340), and a fixing ring (360) is arranged above the threaded tube (350).

2. The bilateral asymmetric profile compressor screw rotor according to claim 1 is characterized in that An exhaust end bearing seat (140) is provided on the side wall of the housing (110), a bearing (150) is provided above the exhaust end bearing seat (140), and a rotating rod (160) is provided on the inner circumference of the bearing (150).

3. The bilateral asymmetric profile compressor screw rotor according to claim 2, characterized in that The side wall of the housing (110) is provided with a mounting hole (230), and the side wall of the housing (110) is provided with a fixing bolt (240).

4. The bilateral asymmetric profile compressor screw rotor according to claim 3, characterized in that A second fixing bolt (320) is provided above the fixing plate (310), a third fixing bolt (370) is provided on the side wall of the sliding frame (330), and a locking nut (380) is provided at the end of the third fixing bolt (370).

5. The bilateral asymmetric profile compressor screw rotor according to claim 4, characterized in that A threaded rod (390) is provided above the slider (340), and a threaded hole (391) is provided on the side wall of the slider (340).

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