Screw vacuum pump assembly tool and assembly method

Abstract

The present application belongs to the technical field of screw vacuum pump assembly, and particularly relates to a screw vacuum pump assembly tool and an assembly method. The assembly tool comprises a simulation pump body, the top of the simulation pump body is provided with an open top, and the left and right ends of the simulation pump body are respectively connected with an exhaust end plate and an air suction end plate. The assembly method adopts the above-mentioned screw vacuum pump assembly tool. The screw vacuum pump assembly tool and the assembly method expose all the internal gaps of the pump that need to be controlled, so that the detection tool can directly contact, the gap measurement and adjustment are very convenient, and the simulation pump body is replaced back to the original pump body after the gap is set, so as to ensure the gap required by the assembled pump, thereby improving the assembly efficiency and reliability of the pump.

Description

TECHNICAL FIELD

[0001] The present application relates to a screw vacuum pump assembly tool and assembly method, belonging to the technical field of screw vacuum pump assembly. BACKGROUND

[0002] The screw vacuum pump adopts a pair of self-engaging rotors to seal the gas, and the gas is transported from the gas suction port to the gas exhaust port through rotation. The pair of rotors of the screw vacuum pump is sealed by a combination of complex curves, and the front concave surface of the screw and the rear convex surface of the screw are theoretically engaged. However, in order to ensure operation, a certain movement gap needs to be ensured during processing, and at the same time, there are also certain gap requirements between the rotor and the gas suction end cover, between the rotor and the gas exhaust end cover, and between the rotor and the original pump body. Therefore, the assembly process is an important process in the production and processing of screw vacuum pumps.

[0003] The traditional assembly method is to directly assemble the original pump body, and the gap inside the pump cavity is observed and measured through the gas suction port. The measuring instrument needs to be inserted into the pump interior, and the measurement and adjustment are very inconvenient, the assembly efficiency is low, and the assembly reliability is poor. SUMMARY

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the present application is to provide a screw vacuum pump assembly tool and assembly method which can effectively improve the assembly efficiency and assembly reliability.

[0005] The screw vacuum pump assembly tool according to the present application comprises a simulation pump body, and an open top is formed in the simulation pump body. The left and right ends of the simulation pump body are respectively connected with a gas exhaust end plate and a gas suction end plate.

[0006] The screw vacuum pump assembly method according to the present application adopts the screw vacuum pump assembly tool described above, and comprises the following steps:

[0007] S1, the gas exhaust end cover is sleeved outside the driving rotor and the driven rotor, and the gas exhaust sealing assembly and the gas exhaust bearing assembly corresponding to the two rotors are installed in the gas exhaust end cover, then the gas exhaust bearing assembly is axially locked, so that the gas exhaust end cover and the driving rotor and the driven rotor form a combination A;

[0008] S2, the gas suction end plate of the assembly tool is connected with the gas suction end cover to form a combination B:

[0009] S3, the driving rotor and the driven rotor of the combination A are loaded into the combination B, the shaft ends of the two rotors are inserted into the gas suction end cover, and then the gas exhaust end plate of the assembly tool is fixedly connected with the gas exhaust end cover;

[0010] S4, install the suction seal assembly and the simulation bearing assembly corresponding to the two rotors in the suction end cover, and install the driven gear at the driving end of the driven rotor and the driving gear and the expansion sleeve at the driving end of the driving rotor, to form a simulation assembled pump;

[0011] S5, adjust the position of the exhaust bearing assembly in the exhaust end cover, so as to adjust the gap between the two rotors and the suction end cover and the gap between the two rotors and the exhaust end cover, at the same time, verify the gap between the two rotors and the simulation pump body, keep the driven rotor stationary, rotate the driving rotor, so as to adjust the phase between the driving rotor and the driving gear, thereby adjusting the gap between the two rotors, and then lock the expansion sleeve, so as to form the final gap of the pump;

[0012] S6, separate the combination A from the combination B, and detach the suction end cover in the combination B from the suction end plate;

[0013] S7, assemble the original pump body and the suction end cover to form a combination C;

[0014] S8, assemble the combination A into the combination C, and reassemble the suction seal assembly and the suction bearing assembly in the suction end cover, so as to complete the whole assembly process.

[0015] Compared with the prior art, the screw type vacuum pump assembly tool and the assembly method have the beneficial effects that:

[0016] The screw type vacuum pump assembly tool and the assembly method have the beneficial effects that: by means of the simulation pump, all the internal gaps of the pump which need to be controlled are exposed outside, the detection tool can be directly contacted, the gap measurement and adjustment are very convenient, and after the gap is finalized, the simulation pump body is replaced back to the original pump body, so as to ensure the required gap of the assembled pump, thereby improving the assembly efficiency and the assembly reliability of the pump. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the assembly tool of the present application;

[0018] Figure 2 is a front view of Figure 1 ;

[0019] Figure 3 is a sectional view of A-A in Figure 2 ;

[0020] Figure 4 is a structural schematic view of the simulation pump assembled by the present application;

[0021] Figure 5 is a left view of Figure 4 ;

[0022] Figure 6 is a front view of Figure 5Sectional view at point BB.

[0023] In the diagram: 1. Opening; 2. Simulated pump body; 3. Suction end plate; 4. Reinforcing rod; 5. Observation port; 6. Exhaust end plate; 7. Driving rotor; 8. Suction end cover; 9. Driven rotor; 10. Exhaust end cover; 11. Driven gear; 12. Expansion sleeve; 13. Exhaust bearing assembly; 14. Exhaust sealing assembly; 15. Suction sealing assembly; 16. Simulated bearing assembly; 17. Driving gear. Detailed Implementation

[0024] The embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0025] Example 1:

[0026] like Figures 1 to 6 As shown, the screw vacuum pump assembly tooling of the present invention includes a simulated pump body 2, an opening 1 on the top of the simulated pump body 2, and an exhaust end plate 6 and an intake end plate 3 respectively connected to the left and right ends of the simulated pump body 2.

[0027] The beneficial effects of this invention compared to the prior art are:

[0028] The screw vacuum pump assembly fixture and assembly method described in this invention exposes all the internal gaps of the pump that need to be controlled by pre-assembling a simulated pump. The testing tools can directly contact these gaps, making gap measurement and adjustment very convenient. After the gaps are finalized, the simulated pump body 2 is replaced with the original pump body, thereby ensuring the gaps required for pump assembly. This not only improves the pump assembly efficiency but also enhances assembly reliability.

[0029] Example 2:

[0030] like Figures 1 to 6 As shown, the screw vacuum pump assembly tooling of the present invention includes a simulated pump body 2, an opening 1 on the top of the simulated pump body 2, and an exhaust end plate 6 and an intake end plate 3 respectively connected to the left and right ends of the simulated pump body 2.

[0031] In this embodiment:

[0032] The bottom of the aforementioned simulated pump body 2 is provided with an observation port 5, which facilitates observation and measurement of the gap from the bottom, and also reduces the weight of the assembly fixture itself, making it easier to operate. At least one reinforcing rod 4 corresponding to the opening 1 is connected between the aforementioned exhaust end plate 6 and the intake end plate 3, which can effectively increase the overall rigidity of the assembly fixture. There are two reinforcing rods 4, which are symmetrical in structure and have a better reinforcement effect. The exhaust end plate 6 and the intake end plate 3 are fixedly connected to the reinforcing rods 4 by bolts, which facilitates disassembly.

[0033] The beneficial effects of this invention compared to the prior art are:

[0034] The screw vacuum pump assembly tool and the assembly method of the present application expose all the internal gaps of the pump that need to be controlled, so that the detection tool can be directly contacted, the gap measurement and adjustment are very convenient, and the simulation pump body 2 is replaced back to the original pump body after the gap is shaped, so as to ensure the gap required by the assembled pump, thereby improving the assembly efficiency and reliability of the pump.

[0035] Embodiment 3:

[0036] As shown in Figures 1 to 6 The screw vacuum pump assembly tool of the present application comprises a simulation pump body 2, and an open top 1 is formed in the top of the simulation pump body 2. An exhaust end plate 6 and an air suction end plate 3 are respectively connected to the left and right ends of the simulation pump body 2.

[0037] The screw vacuum pump assembly method of the present application adopts the screw vacuum pump assembly tool described above, and comprises the following steps:

[0038] S1, the exhaust end cover 10 is sleeved on the outside of the driving rotor 7 and the driven rotor 9, and the exhaust sealing assembly 14 and the exhaust bearing assembly 13 corresponding to the two rotors are installed in the exhaust end cover 10, and then the exhaust bearing assembly 13 is axially locked, so that the exhaust end cover 10, the driving rotor 7 and the driven rotor 9 form a combined body A;

[0039] S2, the air suction end plate 3 of the assembly tool is connected with the air suction end cover 8 to form a combined body B:

[0040] S3, the driving rotor 7 and the driven rotor 9 of the combined body A are installed in the combined body B, so that the shaft ends of the two rotors are inserted into the air suction end cover 8, and then the exhaust end plate 6 of the assembly tool is fixedly connected with the exhaust end cover 10;

[0041] S4, the air suction sealing assembly 15 and the simulation bearing assembly 16 corresponding to the two rotors are installed in the air suction end cover 8, the driven gear 11 is installed at the driving end of the driven rotor 9, the driving gear 17 and the expansion sleeve 12 are installed at the driving end of the driving rotor 7, and a simulation assembled pump is formed;

[0042] S5, the position of the exhaust bearing assembly 13 in the exhaust end cover 10 is adjusted, so that the gaps between the two rotors and the air suction end cover 8 and the gaps between the two rotors and the exhaust end cover 10 are adjusted, and at the same time, the gap between the two rotors and the simulation pump body 2 is verified. The driving rotor 9 is kept stationary, the driving rotor 7 is rotated, the phase between the driving rotor 7 and the driving gear 17 is adjusted, the gap between the two rotors is adjusted, and then the expansion sleeve 12 is locked, so that the shaping gap of the pump is formed;

[0043] S6, separate assembly A from assembly B, and remove the air intake end cap 8 from the air intake end plate 3 in assembly B.

[0044] S7, assemble the original pump body with the suction end cap 8 to form assembly C;

[0045] S8. Insert assembly A into assembly C, and reinstall the intake sealing assembly 15 and intake bearing assembly into the intake end cap 8 to complete the entire assembly process.

[0046] The beneficial effects of this invention compared to the prior art are:

[0047] The screw vacuum pump assembly fixture and assembly method described in this invention exposes all the internal gaps of the pump that need to be controlled by pre-assembling a simulated pump. The testing tools can directly contact these gaps, making gap measurement and adjustment very convenient. After the gaps are finalized, the simulated pump body 2 is replaced with the original pump body, thereby ensuring the gaps required for pump assembly. This not only improves the pump assembly efficiency but also enhances assembly reliability.

[0048] Example 4:

[0049] like Figures 1 to 6 As shown, the screw vacuum pump assembly fixture of the present invention includes a simulated pump body 2. The top of the simulated pump body 2 is provided with an opening 1. The left and right ends of the simulated pump body 2 are respectively connected to an exhaust end plate 6 and an intake end plate 3. The bottom of the simulated pump body 2 is provided with an observation port 5, which facilitates observation and measurement of the gap from the bottom and reduces the weight of the assembly fixture itself, making it easier to operate. At least one reinforcing rod 4 corresponding to the opening 1 is connected between the exhaust end plate 6 and the intake end plate 3, which can effectively increase the overall rigidity of the assembly fixture.

[0050] The screw vacuum pump assembly method of the present invention uses the above-mentioned screw vacuum pump assembly fixture and includes the following steps:

[0051] S1, the exhaust end cover 10 is fitted on the outside of the active rotor 7 and the driven rotor 9, and the exhaust sealing assembly 14 and the exhaust bearing assembly 13 corresponding to the two rotors are installed in the exhaust end cover 10. Then the exhaust bearing assembly 13 is axially locked so that the exhaust end cover 10, the active rotor 7 and the driven rotor 9 form a combination A.

[0052] S2, connect the suction end plate 3 of the assembly fixture to the suction end cover 8 to form assembly B:

[0053] S3, install the active rotor 7 and driven rotor 9 of assembly A into assembly B, insert the shaft ends of the two rotors into the intake end cover 8, and then fix the exhaust end plate 6 of the assembly fixture to the exhaust end cover 10.

[0054] S4, install the suction seal assembly 15 and the simulation bearing assembly 16 corresponding to the two rotors in the suction end cover 8, and install the driven gear 11 at the driving end of the driven rotor 9 and the driving gear 17 and the expansion sleeve 12 at the driving end of the driving rotor 7, to form a simulation assembled pump;

[0055] S5, adjust the position of the exhaust bearing assembly 13 in the exhaust end cover 10, so as to adjust the gap between the two rotors and the suction end cover 8 and the gap between the two rotors and the exhaust end cover 10, at the same time, verify the gap between the two rotors and the simulation pump body 2, keep the driven rotor 9 stationary, rotate the driving rotor 7, so as to adjust the phase between the driving rotor 7 and the driving gear 17, so as to adjust the gap between the two rotors, and then lock the expansion sleeve 12, so as to form the final gap of the pump;

[0056] S6, separate the combination A from the combination B, and detach the suction end cover 8 in the combination B from the suction end plate 3;

[0057] S7, assemble the original pump body with the suction end cover 8 to form a combination C;

[0058] S8, assemble the combination A into the combination C, and reassemble the suction seal assembly 15 and the suction bearing assembly in the suction end cover 8, so as to complete the entire assembly process.

[0059] Before the above step S1, the suction end shaft head of the driving rotor 7 and the driven rotor 9 is inserted into the flexible working platform, so that the two rotors are close to each other.

[0060] Compared with the prior art, the screw type vacuum pump assembly tool and the assembly method have the beneficial effects that:

[0061] The screw type vacuum pump assembly tool and the assembly method have the beneficial effects that: through the simulation pump pre-assembly mode, all the internal gaps of the pump which need to be controlled are exposed outside, the detection tool can be directly contacted, the gap measurement and adjustment are very convenient, and after the gap is finalized, the simulation pump body 2 is replaced back to the original pump body, so as to ensure the required gap of the assembled pump, which not only improves the assembly efficiency of the pump, but also improves the assembly reliability.

[0062] It is particularly pointed out that the above description is the preferred technical scheme of the application and is not used to limit the application. For those skilled in the art, any modification, replacement, improvement, etc. within the spirit and principle of the design of the application should be included in the protection scope of the application. The application can be further modified and improved, and these improvements and appearance packaging should also be regarded as the protection scope of the application.

Claims

1. A method for assembling a screw vacuum pump, comprising an assembly fixture, the assembly fixture including a simulated pump body (2), the top of the simulated pump body (2) having an opening (1), the left and right ends of the simulated pump body (2) being respectively connected to an exhaust end plate (6) and an intake end plate (3), and the bottom of the simulated pump body (2) having an observation port (5), characterized in that: The assembly method includes the following steps: S1, the exhaust end cover (10) is fitted on the outside of the active rotor (7) and the driven rotor (9), and the exhaust sealing assembly (14) and exhaust bearing assembly (13) corresponding to the two rotors are installed in the exhaust end cover (10). Then the exhaust bearing assembly (13) is axially locked so that the exhaust end cover (10) and the active rotor (7) and the driven rotor (9) form a combination A; S2, connect the suction end plate (3) of the assembly fixture to the suction end cover (8) to form assembly B: S3, install the active rotor (7) and driven rotor (9) of assembly A into assembly B, insert the shaft ends of the two rotors into the intake end cover (8), and then fix the exhaust end plate (6) of the assembly fixture to the exhaust end cover (10). S4, install the suction sealing assembly (15) and the simulated bearing assembly (16) corresponding to the two rotors in the suction end cover (8), and install the driven gear (11) on the drive end of the driven rotor (9), and install the drive gear (17) and the expansion sleeve (12) on the drive end of the driving rotor (7) to form a simulated assembly pump; S5, adjust the position of the exhaust bearing assembly (13) inside the exhaust end cover (10) to adjust the gap between the two rotors and the intake end cover (8) and between the two rotors and the exhaust end cover (10). At the same time, verify the gap between the two rotors and the simulated pump body (2). Keep the driven rotor (9) stationary and rotate the active rotor (7) to adjust the phase between the active rotor (7) and the active gear (17) to adjust the gap between the two rotors. Then lock the expansion sleeve (12) to form the fixed gap of the pump. S6, separate assembly A from assembly B, and remove the intake end cap (8) in assembly B from the intake end plate (3); S7, assemble the original pump body with the suction end cap (8) to form a combination C; S8, install assembly A into assembly C, and reinstall the suction sealing assembly (15) and suction bearing assembly in the suction end cap (8) to complete the entire assembly process.

2. The assembly method of the screw vacuum pump according to claim 1, characterized in that: Before step S1, the intake end shafts of the active rotor (7) and the driven rotor (9) are inserted into the flexible working platform to bring the two rotors closer together.

3. The assembly method of the screw vacuum pump according to claim 1 or 2, characterized in that: At least one reinforcing rod (4) corresponding to the opening (1) is connected between the exhaust end plate (6) and the intake end plate (3).

4. The assembly method of the screw vacuum pump according to claim 3, characterized in that: The number of the reinforcing rods (4) is two.

5. The assembly method of the screw vacuum pump according to claim 4, characterized in that: The exhaust end plate (6) and the intake end plate (3) are fixedly connected to the reinforcing rod (4) by bolts.

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