Vacuum extraction equipment of novel vacuum annealing furnace

Abstract

The utility model belongs to the technical field of annealing furnaces, and particularly relates to a novel vacuum extraction device of a vacuum annealing furnace, which comprises a driving motor and a roots pump body, the power output end of the driving motor is connected with the power input end of the roots pump body, and an oil storage tank is mounted on the surface of one side of the roots pump body. A first electromagnetic valve is installed at the bottom of the side wall of the oil storage tank, an oil adding tank is installed at the end of the first electromagnetic valve, a second electromagnetic valve is installed at the bottom of the side wall of the oil adding tank, an oil spraying nozzle is installed at the end of the second electromagnetic valve and located on the surface of the inner wall of the roots pump body, and a lifting plate is movably arranged in an inner cavity of the oil storage tank. The surface of the outer wall of the lifting plate is sleeved with a rubber sleeve, and the outer wall of the rubber sleeve abuts against the surface of the inner wall of the oil filling tank. The oil storage tank and the oil filling tank are arranged, under the cooperation of the two sets of electromagnetic valves, lubricating oil can be automatically injected into the roots pump body, a vacuum pump does not need to be closed during oil filling, and oil filling is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of annealing furnaces, in particular to a novel vacuum extraction device for a vacuum annealing furnace. Background Art

[0002] Vacuum annealing furnace is mainly suitable for stainless steel deep drawing parts such as plumbing equipment, water expansion parts, pins, medical equipment, stainless steel nails, stainless steel screws, riveted parts, stainless steel bearings, watch cases, watch straps, knives, micro shafts, self-drilling and tableware and other stainless steel products. It is a multi-purpose furnace for continuous bright annealing, solution treatment, demagnetization and stainless steel quenching under protective atmosphere control.

[0003] The invention patent, currently published with publication number CN105444571B, discloses a vacuum annealing furnace comprising a furnace tube and a quartz tube encased within the furnace tube. The furnace tube is provided with a front end cap and a rear end cap, respectively, at the front and rear ends. A heating chamber is formed between the outer wall of the quartz tube and the inner wall of the furnace tube, and a reaction chamber is formed between the quartz tube and the front and rear end caps. The rear end cap is equipped with an in-tube air-cooling purge assembly that extends into the reaction chamber and to the vicinity of the front end cap. The furnace tube is also equipped with an out-tube air-cooling purge assembly that communicates with the heating chamber. This vacuum annealing furnace has the advantages of a simple and compact layout, environmentally friendly operation, and a significantly improved cooling rate.

[0004] The existing vacuum annealing furnace is vacuumed by a Roots pump when in use. The rotor in the Roots pump rotates at high speed, and lubricating oil needs to be applied to the surface of the rotor. The vacuum pump needs to be turned off when adding lubricating oil, and the oil filling port needs to be opened with the help of tools when adding oil, which is very inconvenient to use. In order to solve the above problems, this application proposes a new vacuum extraction equipment for a vacuum annealing furnace. Utility Model Content

[0005] (1) Purpose of the utility model

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a new vacuum extraction equipment for a vacuum annealing furnace. By setting an oil storage tank and a refueling tank, and with the cooperation of two sets of solenoid valves, lubricating oil can be automatically injected into the Roots pump body. There is no need to turn off the vacuum pump during oil filling, and refueling is more convenient, thereby solving the problems raised in the background technology.

[0007] (2) Technical solution

[0008] In order to solve the above technical problems, the utility model provides a novel vacuum extraction device for a vacuum annealing furnace, comprising a drive motor and a Roots pump body, wherein the power output end of the drive motor is connected to the power input end of the Roots pump body, an oil storage tank is installed on one side surface of the Roots pump body, a No. 1 solenoid valve is installed at the bottom of the side wall of the oil storage tank, a refueling tank is installed at the end of the No. 1 solenoid valve, a No. 2 solenoid valve is installed at the bottom of the side wall of the refueling tank, an oil nozzle is installed at the end of the No. 2 solenoid valve, and the oil nozzle is located on the inner wall surface of the Roots pump body;

[0009] A lifting plate is movably provided in the inner cavity of the oil storage tank, and a rubber sleeve is sleeved on the outer wall surface of the lifting plate. The outer wall of the rubber sleeve abuts against the inner wall surface of the fuel tank.

[0010] Preferably, a fixing bracket is welded to the bottom of the oil storage tank, and an end of the fixing bracket is welded to the surface of the Roots pump body.

[0011] Preferably, a liquid level observation window is embedded in the side wall surface of the oil storage tank.

[0012] Preferably, an oil filling port is provided on the top surface of the oil storage tank, and a tank cap is threadedly connected to the oil filling port.

[0013] Preferably, a rotating seat is provided on the upper surface of the lifting plate, an adjusting wire shaft is threadedly connected to the upper surface of the refueling tank, and the bottom of the adjusting wire shaft is rotatably connected to the rotating seat.

[0014] Preferably, a locking nut is threadedly connected to the surface of the adjusting wire shaft, and the locking nut abuts against the upper surface of the fuel tank.

[0015] Preferably, a cooling fan is installed on the side wall surface of the Roots pump body, and the cooling fan is symmetrically arranged.

[0016] The above technical solution of the utility model has the following beneficial technical effects:

[0017] 1. In the utility model, the Roots pump body is driven by a driving motor. The cavity of the Roots pump body is in a vacuum state. The No. 1 solenoid valve is closed and the No. 2 solenoid valve is opened. Under the action of negative pressure, the air in the refueling tank can be extracted, so that the refueling tank is in a negative pressure state. The No. 2 solenoid valve is closed and the No. 1 solenoid valve is opened. Under the action of negative pressure, the lubricating oil in the oil storage tank can be sucked into the refueling tank. Then the No. 1 solenoid valve is closed. When the Roots pump body needs to be lubricated, the No. 2 solenoid valve is opened. Under the action of negative pressure, the lubricating oil stored in the refueling tank can be sucked out and the lubricating oil is evenly sprayed on the rotor surface of the Roots pump body through the oil spray nozzle to ensure that the rotor has sufficient lubrication effect, reduce rotor wear, and refueling is more labor-saving.

[0018] 2. In the utility model, the adjusting thread shaft is rotated, and the adjusting thread shaft pushes the lifting plate to rise and fall in the fuel tank under the action of the surface thread, which can adjust the oil storage space in the fuel tank so that the filling amount of lubricating oil can be adjusted during use, which is more flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a vacuum extraction device for a new vacuum annealing furnace of the present invention;

[0020] Figure 2 This is a schematic diagram of the oil storage tank structure of a vacuum extraction device of a new vacuum annealing furnace of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of a refueling tank of a vacuum extraction device of a new vacuum annealing furnace of the present invention;

[0022] Figure 4 The utility model is a schematic diagram of the cross-sectional structure of the oil storage tank of the vacuum extraction equipment of the new vacuum annealing furnace.

[0023] Reference numerals:

[0024] 1. Drive motor; 2. Roots pump body; 3. Oil storage tank; 4. Solenoid valve No. 1; 5. Fuel tank; 6. Solenoid valve No. 2; 7. Fuel injector; 8. Fixed bracket; 9. Liquid level observation window; 10. Oil filling port; 11. Lifting plate; 12. Rubber sleeve; 13. Rotating seat; 14. Adjusting screw shaft; 15. Locking nut; 16. Cooling fan. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0026] like Figure 1-4 As shown, the utility model proposes a new type of vacuum extraction equipment for a vacuum annealing furnace, including a drive motor 1 and a Roots pump body 2, the power output end of the drive motor 1 is connected to the power input end of the Roots pump body 2, an oil storage tank 3 is installed on one side surface of the Roots pump body 2, a No. 1 solenoid valve 4 is installed at the bottom of the side wall of the oil storage tank 3, a refueling tank 5 is installed at the end of the No. 1 solenoid valve 4, a No. 2 solenoid valve 6 is installed at the bottom of the side wall of the refueling tank 5, and a No. 2 solenoid valve 6 is installed at the end of the No. 2 solenoid valve 6, and the oil nozzle 7 is installed on the inner wall surface of the Roots pump body 2.

[0027] It should be noted that the Roots pump body 2 is driven by the drive motor 1, and the cavity of the Roots pump body 2 is in a vacuum state. The No. 1 solenoid valve 4 is closed, and the No. 2 solenoid valve 6 is opened. Under the action of negative pressure, the air in the refueling tank 5 can be extracted, so that the refueling tank 5 is in a negative pressure state. The No. 2 solenoid valve 6 is closed, and the No. 1 solenoid valve 4 is opened. Under the action of negative pressure, the lubricating oil in the oil storage tank 3 can be sucked into the refueling tank 5 and then the No. 1 solenoid valve 4 is closed. When the Roots pump body 2 needs to be lubricated, the No. 2 solenoid valve 6 is opened. Under the action of negative pressure, the lubricating oil stored in the refueling tank 5 can be sucked out, and the lubricating oil is evenly sprayed on the rotor surface of the Roots pump body 2 through the oil nozzle 7 to ensure that the rotor has sufficient lubrication effect, reduce rotor wear, and refueling is more labor-saving.

[0028] In this embodiment, if Figure 1 As shown, a fixing bracket 8 is welded to the bottom of the oil storage tank 3 , and the end of the fixing bracket 8 is welded to the surface of the Roots pump body 2 .

[0029] It should be noted that the oil storage tank 3 is welded to the Roots pump body 2 via a fixing bracket 8 .

[0030] In this embodiment, if Figure 3 and Figure 4 As shown, a liquid level observation window 9 is embedded on the side wall surface of the oil storage tank 3, and an oil filling port 10 is opened on the top surface of the oil storage tank 3. The oil filling port 10 is threadedly connected to the oil tank cap.

[0031] It should be noted that the liquid level of the oil storage tank 3 can be observed through the liquid level observation window 9 , the lubricating oil can be replenished through the oil filling port 10 , and the oil tank cap can seal the oil filling port 10 .

[0032] In this embodiment, if Figure 3 and Figure 4 As shown, the inner cavity of the oil storage tank 3 is movably provided with a lifting plate 11, the outer wall surface of the lifting plate 11 is provided with a rubber sleeve 12, the outer wall of the rubber sleeve 12 abuts against the inner wall surface of the refueling tank 5, the upper surface of the lifting plate 11 is provided with a rotating seat 13, the upper surface of the refueling tank 5 is threadedly connected with an adjusting wire shaft 14, the bottom of the adjusting wire shaft 14 is rotatably connected to the rotating seat 13, the surface of the adjusting wire shaft 14 is threadedly connected with a locking nut 15, and the locking nut 15 abuts against the upper surface of the refueling tank 5.

[0033] It should be noted that by rotating the adjusting thread shaft 14, the adjusting thread shaft 14 pushes the lifting plate 11 to rise and fall in the refueling tank 5 under the action of the surface thread, and the oil storage space in the refueling tank 5 can be adjusted so that the amount of lubricating oil added during use can be adjusted, which is more flexible to use. The locking nut 15 abuts against the upper surface of the refueling tank 5 to lock the adjusting thread shaft 14, and the rubber sleeve 12 is used to seal between the side wall of the lifting plate 11 and the inner wall of the oil storage tank 3.

[0034] In this embodiment, if Figure 1 As shown, a cooling fan 16 is installed on the side wall surface of the Roots pump body 2, and the cooling fan 16 is symmetrically arranged.

[0035] It should be noted that the cooling fan 16 can improve the heat dissipation effect of the Roots pump body 2 .

[0036] The working principle and use process of the utility model are as follows: the Roots pump body 2 is driven by the driving motor 1, the cavity of the Roots pump body 2 is in a vacuum state, the No. 1 solenoid valve 4 is closed, and the No. 2 solenoid valve 6 is opened. Under the action of negative pressure, the air in the fuel tank 5 can be extracted, so that the fuel tank 5 is in a negative pressure state, the No. 2 solenoid valve 6 is closed, and the No. 1 solenoid valve 4 is opened. Under the action of negative pressure, the lubricating oil in the oil storage tank 3 can be sucked into the fuel tank 5. Then the No. 1 solenoid valve 4 is closed. When it is necessary to lubricate the inside of the Roots pump body 2, the No. 2 solenoid valve is opened. The solenoid valve 6 can suck out the lubricating oil stored in the refueling tank 5 under the action of negative pressure, and evenly spray the lubricating oil on the rotor surface of the Roots pump body 2 through the oil nozzle 7 to ensure that the rotor has sufficient lubrication effect, reduce rotor wear, and refuel more labor-saving. Rotate the adjusting wire shaft 14, and the adjusting wire shaft 14 pushes the lifting plate 11 to rise and fall in the refueling tank 5 under the action of the surface thread. The oil storage space in the refueling tank 5 can be adjusted so that the amount of lubricating oil added can be adjusted during use, which is more flexible to use.

[0037] It should be understood that the above-described specific embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and do not constitute limitations of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention shall be included within the scope of protection of the present invention. In addition, the appended claims of the present invention are intended to cover all variations and modifications that fall within the scope and metes and bounds of the appended claims or their equivalents.

Claims

1. A novel vacuum extraction device for a vacuum annealing furnace, comprising a drive motor (1) and a Roots pump body (2), wherein the power output end of the drive motor (1) is connected to the power input end of the Roots pump body (2), and is characterized in that: An oil storage tank (3) is installed on one side surface of the Roots pump body (2), a first solenoid valve (4) is installed at the bottom of the side wall of the oil storage tank (3), a fuel tank (5) is installed at the end of the first solenoid valve (4), a second solenoid valve (6) is installed at the bottom of the side wall of the fuel tank (5), an oil nozzle (7) is installed at the end of the second solenoid valve (6), and the oil nozzle (7) is located on the inner wall surface of the Roots pump body (2); The inner cavity of the oil storage tank (3) is movably provided with a lifting plate (11), the outer wall surface of the lifting plate (11) is covered with a rubber sleeve (12), and the outer wall of the rubber sleeve (12) abuts against the inner wall surface of the refueling tank (5).

2. The vacuum extraction equipment of the novel vacuum annealing furnace according to claim 1 is characterized in that: A fixing bracket (8) is welded to the bottom of the oil storage tank (3), and an end of the fixing bracket (8) is welded to the surface of the Roots pump body (2).

3. The vacuum extraction equipment of the novel vacuum annealing furnace according to claim 2 is characterized in that: A liquid level observation window (9) is embedded on the side wall surface of the oil storage tank (3).

4. The vacuum extraction equipment of the novel vacuum annealing furnace according to claim 3 is characterized in that: An oil filling port (10) is provided on the top surface of the oil storage tank (3), and an oil tank cap is threadedly connected to the oil filling port (10).

5. The vacuum extraction equipment of the novel vacuum annealing furnace according to claim 1 is characterized in that: The upper surface of the lifting plate (11) is provided with a rotating seat (13), and the upper surface of the refueling box (5) is threadedly connected with an adjusting thread shaft (14), and the bottom of the adjusting thread shaft (14) is rotatably connected to the rotating seat (13).

6. The vacuum extraction equipment of the novel vacuum annealing furnace according to claim 5, characterized in that: The surface of the adjusting thread shaft (14) is threadedly connected with a locking nut (15), and the locking nut (15) abuts against the upper surface of the fuel tank (5).

7. The vacuum extraction equipment of the novel vacuum annealing furnace according to claim 1 is characterized in that: A cooling fan (16) is installed on the side wall surface of the Roots pump body (2), and the cooling fan (16) is symmetrically arranged.

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