Rotor of double-screw expander

Abstract

The utility model discloses a rotor of a double-screw expander, which relates to the technical field of double-screw expanders and comprises a male rotor rod and a female rotor rod, spiral bodies are arranged on the outer walls of the male rotor rod and the female rotor rod, and bearing rods are arranged on the outer surfaces of one ends of the male rotor rod and the female rotor rod. The outer wall of the bearing rod is detachably connected with a bearing body, and the outer wall of the male rotor rod and the outer wall of the female rotor rod are each provided with an end shell. According to the double-screw expander rotor provided by the utility model, the arranged first auxiliary gear can assist in meshing with the main gear to rotate during use, a triangular structure can be formed between the first auxiliary gear and the main gear to ensure the stability of the male rotor rod during rotation, and the second auxiliary gear can assist in meshing with the auxiliary gear to rotate, so that the stability of the male rotor rod during rotation is ensured. And a triangular structure is also formed between the second auxiliary gear and the auxiliary gear, so that the stability of the female rotor rod during rotation can be guaranteed, and the influence of vibration on the male rotor rod and the female rotor rod can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw expanders, in particular to a twin-screw expander rotor. Background Art

[0002] A twin-screw expander is a commonly used industrial equipment. It compresses gas and sends it into a confined space by rotating twin screws. Twin-screw expanders are widely used in industrial production, especially in high-tech, chemical, pharmaceutical and automotive fields. In a twin-screw expander, the screw rotor is an extremely important component, but the existing twin-screw expander rotors have certain disadvantages when used.

[0003] A twin-screw expander is disclosed in the Chinese utility model patent application number: CN201020581590.9. The utility model has the advantages of compact structure, stable performance, convenient installation and adjustment, and high working efficiency. The utility model does not have high requirements on the parameters and quality of the working medium. It can be applied to vapor-liquid two-phase liquid, saturated steam and supersaturated steam, and can also be applied to full liquid medium. It has a high efficiency of utilizing industrial waste heat liquid and waste heat gas. However, when the twin-screw expander is in use, the male rotor and the female rotor are meshed through a separate gear. When the male rotor and the female rotor mesh and rotate, the meshing stability between the gears is poor, and it is easily affected by vibration during operation. In addition, the meshing stability between the male rotor and the female rotor is poor. When used for a long time, the male rotor and the female rotor are prone to offset and gaps. For this reason, we propose a twin-screw expander rotor. Utility Model Content

[0004] The main purpose of the utility model is to provide a twin-screw expander rotor, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a twin-screw expander rotor, comprising a male rotor rod and a female rotor rod, the outer walls of the male rotor rod and the female rotor rod are both provided with a spiral body, the outer surfaces of one end of the male rotor rod and the female rotor rod are both provided with a bearing rod, the outer walls of the bearing rod are detachably connected with a bearing body, the outer walls of the male rotor rod and the female rotor rod are both provided with an end shell, the rear end outer surface of the end shell is detachably connected with an end cover, the outer surface of the other end of the male rotor rod is provided with a main gear, the outer surface of the other end of the female rotor rod is provided with a secondary gear, the middle part of the end shell is provided with a first auxiliary gear and a second auxiliary gear, the first auxiliary gear is located on one side of the second auxiliary gear, and a central axis rod is provided between the first auxiliary gear and the second auxiliary gear and the end shell.

[0006] Preferably, the upper outer surface of the end shell is detachably connected to an oil box, the upper outer surface of the oil box is detachably connected to a sealing cover, the lower outer surface of the end shell is detachably connected to a recovery box, a recovery pipe is provided between the recovery box and the end shell, the front end outer surface of the recovery box is detachably connected to a cover plate, and the lower outer surface of the oil box is detachably connected to an oil drip valve.

[0007] Preferably, the outer wall of the male rotor rod is detachably connected to the male turntable, the outer wall of the female rotor rod is detachably connected to the female turntable, the outer wall of the male turntable is provided with an outer convex edge, the outer wall of the outer convex edge is fixedly connected to a first rubber ring, the middle part of the female turntable is provided with an inner groove, the inner wall of the inner groove is fixedly connected to a second rubber ring.

[0008] Preferably, the first auxiliary gear and the second auxiliary gear are both movably connected to the end shell through a central axis rod, the number of the first auxiliary gear and the second auxiliary gear are both two groups, the first auxiliary gear is meshingly connected to the main gear, and the second auxiliary gear is meshingly connected to the sub-gear.

[0009] Preferably, the oil drip valve penetrates into the interior of the end shell, an oil drip head is provided on the outer surface of one end of the oil drip valve, and the recovery box is connected with the end shell through a recovery pipe.

[0010] Preferably, the male turntable is welded to the outer convex edge, and the female turntable and the inner groove are an integrally formed structure.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The first auxiliary gear provided can assist the meshing main gear for rotation when in use, and the first auxiliary gear can form a triangular structure with the main gear to ensure the stability of the male rotor rod during rotation. The second auxiliary gear can assist the meshing sub-gear for rotation, and the second auxiliary gear also forms a triangular structure with the sub-gear to ensure the stability of the female rotor rod during rotation, and can reduce the impact of vibration on the male rotor rod and the female rotor rod; when in use, the male rotating disk can be engaged with the inner groove of the female rotating disk through the outer convex edge, so that the first rubber ring and the second rubber ring can be fitted and rotated, and the traction force between the male rotor rod and the female rotor rod can be increased through the friction force between the first rubber ring and the second rubber ring, thereby ensuring the stability between the male rotor rod and the female rotor rod, and avoiding the offset and gap between the male rotor rod and the female rotor rod after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is the internal structure diagram of the end shell of the utility model;

[0015] Figure 3 This is a structural diagram of the public rotating disk of the utility model;

[0016] Figure 4 It is a cross-sectional structural diagram of the mother turntable of the utility model.

[0017] In the figure: 1. male rotor rod; 2. female rotor rod; 3. spiral body; 4. male turntable; 5. female turntable; 6. bearing rod; 7. bearing body; 8. oil box; 9. sealing cover; 10. end cover; 11. end shell; 12. main gear; 13. secondary gear; 14. first auxiliary gear; 15. second auxiliary gear; 16. middle shaft rod; 17. recovery box; 18. recovery pipe; 19. cover plate; 20. oil drip valve; 21. outer convex edge; 22. first rubber ring; 23. inner groove; 24. second rubber ring. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] like Figure 1-4 As shown, a twin-screw expander rotor provided by an embodiment of the utility model includes a male rotor rod 1 and a female rotor rod 2, the outer walls of the male rotor rod 1 and the female rotor rod 2 are both provided with a spiral body 3, the outer surfaces of one end of the male rotor rod 1 and the female rotor rod 2 are both provided with a bearing rod 6, the outer walls of the bearing rod 6 are detachably connected with a bearing body 7, the outer walls of the male rotor rod 1 and the female rotor rod 2 are both provided with an end shell 11, the rear end outer surface of the end shell 11 is detachably connected with an end cover 10, the outer surface of the other end of the male rotor rod 1 is provided with a main gear 12, the outer surface of the other end of the female rotor rod 2 is provided with a secondary gear 13, the middle part of the end shell 11 is provided with a first auxiliary gear 14 and a second auxiliary gear 15, the first auxiliary gear 14 is located on one side of the second auxiliary gear 15, and a central axis rod 16 is provided between the first auxiliary gear 14 and the second auxiliary gear 15 and the end shell 11.

[0020] Specifically, in this embodiment, a male rotor rod 1 and a female rotor rod 2 are provided, and the outer walls of the male rotor rod 1 and the female rotor rod 2 are both provided with a spiral body 3, and the outer surfaces of one end of the male rotor rod 1 and the female rotor rod 2 are both provided with a bearing rod 6, and the outer wall of the bearing rod 6 is detachably connected with a bearing body 7, and the outer walls of the male rotor rod 1 and the female rotor rod 2 are both provided with an end shell 11, and the rear end outer surface of the end shell 11 is detachably connected with an end cover 10, and the outer surface of the other end of the male rotor rod 1 is provided with a main gear 12, and the outer surface of the other end of the female rotor rod 2 is provided with a secondary gear 13, and the middle part of the end shell 11 is provided with a first auxiliary gear 14 and a second auxiliary gear 15, and the first auxiliary gear 14 is provided with a second auxiliary gear 15. When in use, the gear 14 can assist in engaging the main gear 12 for rotation. The first auxiliary gear 14 can form a triangular structure with the main gear 12 to ensure the stability of the male rotor rod 1 during rotation. The second auxiliary gear 15 can assist in engaging the secondary gear 13 for rotation, and the second auxiliary gear 15 also forms a triangular structure with the secondary gear 13 to ensure the stability of the female rotor rod 2 during rotation, and can reduce the impact of vibration on the male rotor rod 1 and the female rotor rod 2. The first auxiliary gear 14 is located on one side of the second auxiliary gear 15, and a central axis rod 16 is provided between the first auxiliary gear 14 and the second auxiliary gear 15 and the end shell 11.

[0021] The utility model provides a twin-screw expander rotor, in which a first auxiliary gear 14 is arranged to assist in meshing with a main gear 12 for rotation when in use, and the first auxiliary gear 14 can form a triangular structure with the main gear 12 to ensure the stability of the positive rotor rod 1 during rotation, and the second auxiliary gear 15 can assist in meshing with a sub-gear 13 for rotation, and the second auxiliary gear 15 also forms a triangular structure with the sub-gear 13 to ensure the stability of the negative rotor rod 2 during rotation, and can reduce the influence of vibration on the positive rotor rod 1 and the negative rotor rod 2.

[0022] In an embodiment provided by the utility model, an oil box 8 is detachably connected to the outer surface of the upper end of the end shell 11, a sealing cover 9 is detachably connected to the outer surface of the upper end of the oil box 8, a recovery box 17 is detachably connected to the outer surface of the lower end of the end shell 11, a recovery pipe 18 is arranged between the recovery box 17 and the end shell 11, a cover plate 19 is detachably connected to the outer surface of the front end of the recovery box 17, an oil drip valve 20 is detachably connected to the outer surface of the lower end of the oil box 8, the oil box 8 can be convenient for storing lubricating oil when in use, the lubricating oil can be dripped onto the gears through the oil drip valve 20, which can facilitate lubrication between the gears, and the recovery box 17 can recover the leaked lubricating oil through the recovery pipe 18 when in use, so as to avoid waste.

[0023] In another embodiment provided by the utility model, the outer wall of the male rotor rod 1 is detachably connected to the male turntable 4, and the outer wall of the female rotor rod 2 is detachably connected to the female turntable 5. The outer wall of the male turntable 4 is provided with an outer convex edge 21, and the outer wall of the outer convex edge 21 is fixedly connected to the first rubber ring 22. The middle part of the female turntable 5 is provided with an inner groove 23, and the inner wall of the inner groove 23 is fixedly connected to the second rubber ring 24. When in use, the male turntable 4 can be engaged with the inner groove 23 of the female turntable 5 through the outer convex edge 21, so that the first rubber ring 22 and the second rubber ring 24 can be fitted and rotated, and the traction force between the male rotor rod 1 and the female rotor rod 2 can be increased by the friction force between the first rubber ring 22 and the second rubber ring 24, thereby ensuring the stability between the male rotor rod 1 and the female rotor rod 2, and avoiding the offset and gap between the male rotor rod 1 and the female rotor rod 2 after long-term use.

[0024] In another embodiment provided by the utility model, the first auxiliary gear 14 and the second auxiliary gear 15 are both movably connected to the end shell 11 through the central axis rod 16, and the number of the first auxiliary gear 14 and the second auxiliary gear 15 are both two groups. The first auxiliary gear 14 is meshed and connected with the main gear 12, and the second auxiliary gear 15 is meshed and connected with the sub-gear 13. When in use, the first auxiliary gear 14 can assist in meshing the main gear 12 for rotation, and the second auxiliary gear 15 can assist in meshing the sub-gear 13 for rotation, and the adjacent first auxiliary gears 14 and second auxiliary gears 15 are also meshed and rotated.

[0025] In one embodiment provided by the utility model, the oil dripping valve 20 penetrates into the interior of the end shell 11, and an oil dripping head is provided on the outer surface of one end of the oil dripping valve 20. The recovery box 17 is connected with the end shell 11 through the recovery tube 18. The oil dripping valve 20 can control the oil dripping speed when in use, and the lubricating oil can be dripped through the oil dripping head.

[0026] In another embodiment provided by the utility model, the male turntable 4 is welded to the outer convex edge 21, the female turntable 5 and the inner groove 23 are an integrally formed structure, and the outer convex edge 21 can be meshed and docked with the inner groove 23 when in use.

[0027] It should be noted that the utility model is a twin-screw expander rotor. When in use, the male rotor rod 1 and the female rotor rod 2 can be relatively meshed and rotated through the spiral body 3. At this time, the main gear 12 and the sub-gear 13 in the end shell 11 also rotate relatively. The first auxiliary gear 14 can assist in meshing the main gear 12 for rotation when in use. The first auxiliary gear 14 can form a triangular structure with the main gear 12 to ensure the stability of the male rotor rod 1 during rotation. The second auxiliary gear 15 can assist in meshing the sub-gear 13 for rotation, and the second auxiliary gear 15 also forms a triangular structure with the sub-gear 13 to ensure the stability of the female rotor rod 2 during rotation, and can reduce the impact of vibration on the male rotor rod 1 and the female rotor rod 2. When the rotor rod 2 engages and rotates, the male rotating disk 4 can be engaged and engaged with the inner groove 23 of the female rotating disk 5 through the outer convex edge 21, so that the first rubber ring 22 and the second rubber ring 24 can be fitted and rotated, and the traction between the male rotor rod 1 and the female rotor rod 2 can be improved by the friction between the first rubber ring 22 and the second rubber ring 24, thereby ensuring the stability between the male rotor rod 1 and the female rotor rod 2, and avoiding the offset and gap between the male rotor rod 1 and the female rotor rod 2 after long-term use. The oil box 8 can be used to store lubricating oil when in use, and the lubricating oil can be dripped onto the gears through the oil drip valve 20, which can facilitate the lubrication effect between the gears. The recovery box 17 can recover the leaked lubricating oil through the recovery pipe 18 when in use, which can avoid waste and is more practical.

[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A twin-screw expander rotor, comprising a male rotor rod (1) and a female rotor rod (2), characterized in that: The outer walls of the male rotor rod (1) and the female rotor rod (2) are both provided with a spiral body (3); the outer surfaces of one end of the male rotor rod (1) and the female rotor rod (2) are both provided with a bearing rod (6); the outer walls of the bearing rod (6) are detachably connected to a bearing body (7); the outer walls of the male rotor rod (1) and the female rotor rod (2) are both provided with an end shell (11); the rear end outer surface of the end shell (11) is detachably connected to an end cover (10); the outer surface of the other end of the male rotor rod (1) is provided with a main gear (12); the outer surface of the other end of the female rotor rod (2) is provided with a secondary gear (13); a first auxiliary gear (14) and a second auxiliary gear (15) are provided in the middle of the end shell (11); the first auxiliary gear (14) is located on one side of the second auxiliary gear (15); and a central shaft rod (16) is provided between the first auxiliary gear (14) and the second auxiliary gear (15) and the end shell (11).

2. A twin-screw expander rotor according to claim 1, characterized in that: The upper outer surface of the end shell (11) is detachably connected to an oil box (8), the upper outer surface of the oil box (8) is detachably connected to a sealing cover (9), the lower outer surface of the end shell (11) is detachably connected to a recovery box (17), a recovery pipe (18) is provided between the recovery box (17) and the end shell (11), the front end outer surface of the recovery box (17) is detachably connected to a cover plate (19), and the lower outer surface of the oil box (8) is detachably connected to an oil drip valve (20).

3. A twin-screw expander rotor according to claim 1, characterized in that: The outer wall of the male rotor rod (1) is detachably connected to a male rotating disk (4), the outer wall of the female rotor rod (2) is detachably connected to a female rotating disk (5), the outer wall of the male rotating disk (4) is provided with an outer convex edge (21), the outer wall of the outer convex edge (21) is fixedly connected to a first rubber ring (22), the middle part of the female rotating disk (5) is provided with an inner groove (23), the inner wall of the inner groove (23) is fixedly connected to a second rubber ring (24).

4. A twin-screw expander rotor according to claim 1, characterized in that: The first auxiliary gear (14) and the second auxiliary gear (15) are both movably connected to the end housing (11) via a central shaft (16); the first auxiliary gear (14) and the second auxiliary gear (15) are both provided in two sets; the first auxiliary gear (14) is meshingly connected to the main gear (12), and the second auxiliary gear (15) is meshingly connected to the auxiliary gear (13).

5. A twin-screw expander rotor according to claim 2, characterized in that: The oil drip valve (20) penetrates into the interior of the end shell (11), an oil drip head is provided on the outer surface of one end of the oil drip valve (20), and the recovery box (17) is connected to the end shell (11) through a recovery pipe (18).

6. A twin-screw expander rotor according to claim 3, characterized in that: The male rotating disk (4) is welded to the outer convex edge (21), and the female rotating disk (5) and the inner groove (23) are an integrally formed structure.

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