Oil blocking and returning structure of oil quenching furnace

Abstract

The utility model discloses an oil retaining and returning structure of an oil quenching furnace, which relates to the technical field of oil quenching furnaces and comprises a horizontal furnace body, a quenching chamber and a heating chamber are arranged in the furnace body, an oil storage tank is arranged at the bottom of the quenching chamber, and an inlet and an outlet are arranged on one side of the quenching chamber far away from the heating chamber. An inner side oil baffle plate and an outer side oil baffle plate are arranged at the inlet and outlet, an oil receiving groove is formed between the inner side oil baffle plate and the outer side oil baffle plate, an oil return opening is formed in the bottom of the inner side oil baffle plate and is communicated with the quenching chamber, a scraping plate is arranged in the oil receiving groove and is in sliding fit with the oil receiving groove, and a plurality of air spraying pipes are arranged at the upper part of the inlet and outlet; and the gas ejector pipe is connected with a gas supply mechanism arranged outside the furnace body. Cooling oil carried on the surface of a workpiece can be reduced, the cooling oil collected in the oil receiving groove can be reused, and waste is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of oil quenching furnaces, in particular to an oil baffle and oil return structure of an oil quenching furnace. Background Art

[0002] Oil quenching furnace is a metal heat treatment equipment, which can heat and oil quench metal materials to increase the hardness and strength of metal materials.

[0003] like Fig. 9 As shown, at present, the oil quenching furnace includes a horizontal furnace body 1, a quenching chamber 11 and a heating chamber 12 are arranged inside the furnace body 1, an oil storage tank 13 is arranged at the bottom of the quenching chamber 11, cooling oil is stored in the oil storage tank 13, the quenching chamber 11 is provided with an inlet and outlet 14 and a furnace door 15 on the side away from the heating chamber 12, an inner oil baffle plate 2 and an outer oil baffle plate 3 are arranged at the inlet and outlet 14, an oil receiving groove is arranged between the inner oil baffle plate 2 and the outer oil baffle plate 3, an oil outlet pipe 16 is arranged at the bottom of the oil receiving groove, and a head 17 is arranged at the bottom of the oil outlet pipe 16.

[0004] After the workpiece is heated in the heating chamber 12, it needs to enter the oil storage tank 13 of the quenching chamber 11 for oil quenching. The workpiece that has completed the oil quenching comes out through the inlet and outlet 14. When the workpiece after the oil quenching passes through the inlet and outlet 14, the cooling oil carried on the surface of the workpiece drips into the oil receiving tank for temporary storage. When the cooling oil in the oil receiving tank is full, the worker needs to open the sealing head 17 and use a container to receive the cooling oil flowing out of the oil outlet pipe 16 to clean the docking oil tank.

[0005] On the one hand, the cooling oil carried on the workpiece surface drips into the oil receiving tank by its own gravity, and the workpiece surface still carries the cooling oil when leaving the oil quenching furnace, causing waste; on the other hand, the cooling oil collected in the oil receiving tank cannot be reused, which also causes waste. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the utility model proposes an oil baffle and oil return structure for an oil quenching furnace. The utility model can reduce the cooling oil carried on the surface of the workpiece and reuse the cooling oil collected in the oil receiving tank to reduce waste.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] An oil baffle and return structure of an oil quenching furnace comprises a horizontal furnace body, wherein a quenching chamber and a heating chamber are arranged inside the furnace body, an oil storage tank is arranged at the bottom of the quenching chamber, an inlet and an outlet are arranged at the quenching chamber on a side away from the heating chamber, an inner oil baffle plate and an outer oil baffle plate are arranged at the inlet and outlet, an oil receiving groove is arranged between the inner oil baffle plate and the outer oil baffle plate, an oil return port is arranged at the bottom of the inner oil baffle plate, the oil return port is communicated with the quenching chamber, a scraper is arranged inside the oil receiving groove, the scraper is slidably matched with the oil receiving groove, a plurality of injection pipes are arranged on the upper part of the inlet and outlet, and the injection pipes are connected with an air supply mechanism arranged outside the furnace body.

[0009] Furthermore, the scraper is provided with a guide rod on one side close to the inner oil baffle plate, the inner oil baffle plate is provided with a guide hole, and the guide rod is slidably matched with the guide hole.

[0010] Furthermore, a storage groove is provided on the top surface of the scraper, and two insertion holes are provided at the bottom of the storage groove. Insertion rods are provided in the two insertion holes. The insertion rods and the insertion holes are vertically slidably matched, and the tops of the two insertion rods are connected by a grab bar.

[0011] Furthermore, a limit block is provided at the bottom of the insertion rod, and a limit hole is provided at the lower part of the insertion hole. The aperture of the limit hole is larger than the aperture of the insertion hole, and the limit block is vertically slidably matched with the limit hole.

[0012] Furthermore, the air jet pipe is connected with a metal bellows.

[0013] Furthermore, the air supply mechanism includes an air storage tank, which is connected to an air supply pipe through an air outlet pipe, an air outlet valve is provided on the air outlet pipe, an air supply pipe is provided on the air supply pipe, and the air storage tank is connected to an air compressor through an air inlet pipe, and an air inlet valve is provided on the air inlet pipe.

[0014] The utility model has the beneficial effects:

[0015] 1. In the utility model, the air jet pipe can use the compressed air provided by the air delivery mechanism to blow the cooling oil on the surface of the workpiece, so that the blown cooling oil falls into the oil receiving tank, and the cooling oil in the oil receiving tank flows back to the oil storage tank at the bottom of the quenching chamber through the oil return port.

[0016] The scraper can push the remaining cooling oil in the oil receiving tank out from the oil return port, and the cooling oil flowing out of the oil return port flows back to the oil storage tank at the bottom of the quenching chamber.

[0017] Therefore, the oil baffle and oil return structure of the oil quenching furnace of the utility model can reduce the cooling oil carried on the surface of the workpiece, and allow the cooling oil to flow back to the oil storage tank through the oil return port of the oil receiving tank for reuse, thereby reducing waste and saving costs.

[0018] 2. In the process of pushing the scraper, the setting of the guide rod and the guide hole can stabilize the scraping direction of the scraper and keep the scraper in contact with the wall of the oil storage tank, thereby ensuring the oil scraping effect.

[0019] 3. When the scraper needs to be pushed, the grab bar can be lifted up. The setting of the grab bar provides a gripping position for workers to push the scraper, making it convenient to push the scraper. When the scraper does not need to be pushed, the grab bar can be pushed down to lower the height of the grab bar to prevent the workpiece from being blocked from entering and exiting due to the excessive height of the grab bar.

[0020] 4. By setting the limit block and the limit hole, it is possible to prevent the plug rod from being completely pulled out of the plug hole when the grab bar is lifted, thereby preventing the grab bar from being completely separated from the scraper, thereby improving the reliability of operating the grab bar.

[0021] 5. The metal bellows can be bent. By bending the metal bellows, the air outlet direction of the jet pipe can be adjusted, thereby improving the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the oil retaining and oil returning structure of an oil quenching furnace;

[0023] Figure 2 This is a front view of an oil retaining and oil returning structure of an oil quenching furnace;

[0024] Figure 3 yes Figure 2 Sectional view at AA in the middle;

[0025] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0026] Figure 5 It is a three-dimensional diagram of the oil retaining and oil returning structure of an oil quenching furnace after a part of the furnace door is cut open;

[0027] Figure 6 This is a front view of an oil baffle and oil return structure of an oil quenching furnace after a portion of the furnace door is cut open;

[0028] Figure 7 It is a schematic diagram of the structure of the scraper;

[0029] Figure 8 yes Figure 7 A partial enlarged view of point C in the middle;

[0030] Fig. 9 It is a structural diagram of the background technology.

[0031] Description of reference numerals:

[0032] 1-furnace body, 11-quenching chamber, 12-heating chamber, 13-oil storage tank, 14-inlet and outlet, 15-furnace door, 16-oil outlet pipe, 17-end,

[0033] 2-Inner oil baffle, 21-Oil return port, 22-Guide hole,

[0034] 3-Outer oil baffle,

[0035] 4-jet pipe, 41-metal bellows,

[0036] 5-air supply mechanism, 51-air storage tank, 52-air outlet pipe, 521-air outlet valve, 53-air supply pipe, 54-air inlet pipe, 541-air inlet valve, 55-air compressor,

[0037] 6-scraper, 61-guide rod, 62-storage groove, 63-jack, 64-insertion rod, 65-grab rod, 66-limit block, 67-limit hole. DETAILED DESCRIPTION

[0038] In order to better understand the present invention, the present invention is further described below in conjunction with the accompanying drawings. It is worth noting that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] Example:

[0040] like Figure 1-Figure 8 As shown, an oil retaining and returning structure of an oil quenching furnace comprises a horizontal furnace body 1.

[0041] See also Figure 3 A quenching chamber 11 and a heating chamber 12 are provided inside the furnace body 1. An oil storage tank 13 is provided at the bottom of the quenching chamber 11, and an inlet and outlet 14 is provided at a side of the quenching chamber 11 away from the heating chamber 12.

[0042] See also Figure 3 , Figure 4 and Figure 5 The lower part of the inlet and outlet 14 is welded with an inner oil baffle plate 2 and an outer oil baffle plate 3, and an oil receiving groove is provided between the inner oil baffle plate 2 and the outer oil baffle plate 3. The bottom of the inner oil baffle plate 2 is provided with an oil return port 21, and the oil return port 21 is connected to the quenching chamber 11.

[0043] See also Figure 6 A plurality of air injection pipes 4 are fixedly installed on the upper part of the inlet and outlet 14 , and the air injection pipes 4 are connected to an air supply mechanism 5 , which is arranged outside the furnace body 1 , and is used to provide compressed air to the air injection pipes 4 .

[0044] See also Figure 2In this embodiment, the air supply mechanism 5 includes an air storage tank 51, which is used to store compressed air. The air storage tank 51 is connected to an air supply pipe 53 through an air outlet pipe 52, and an air outlet valve 521 is installed on the air outlet pipe 52. The air supply pipe 53 is installed with the injection pipe 4. The air storage tank 51 is connected to an air compressor 55 through an air inlet pipe 54. The air compressor 55 is an existing device and is used to provide compressed air to the air storage tank 51. An air inlet valve 541 is installed on the air inlet pipe 54. In order to provide clean compressed air, a filter (not shown in the figure) can be connected to the air inlet end of the air compressor 55.

[0045] The workpiece after oil quenching passes through the inlet and outlet 14. At this time, the compressed air sprayed from the air injection pipe 4 can blow off the cooling oil on the surface of the workpiece, reducing the cooling oil carried on the surface of the workpiece. The cooling oil blown off by the compressed air falls into the oil receiving tank. The cooling oil in the oil receiving tank flows back to the oil storage tank 13 at the bottom of the quenching chamber 11 through the oil return port 21.

[0046] Also, see Figure 6 The air jet pipe 4 is also threadedly connected with a metal bellows 41. The metal bellows 41 is an existing product, and the metal bellows 41 can be bent. Therefore, the air outlet direction of the air jet pipe 4 can be adjusted by bending the metal bellows 41, thereby improving the flexibility of use.

[0047] See also Figure 4 A scraper 6 is provided inside the oil receiving groove. A guide rod 61 is provided on a side of the scraper 6 close to the inner oil baffle plate 2. The inner oil baffle plate 2 is provided with a guide hole 22. The guide rod 61 is slidably matched with the guide hole 22.

[0048] When there is residual cooling oil in the oil receiving tank, in order to return the remaining cooling oil to the oil storage tank 13, the worker can push the scraper 6 to scrape back and forth between the inner oil baffle plate 2 and the outer oil baffle plate 3, and push the remaining cooling oil out from the oil return port 21. The cooling oil flowing out of the oil return port 21 flows back to the oil storage tank 13 at the bottom of the quenching chamber 11.

[0049] In the process of pushing the scraper 6, the setting of the guide rod 61 and the guide hole 22 can stabilize the scraping direction of the scraper 6 and keep the scraper 6 in contact with the wall of the oil storage tank 13, thereby ensuring the oil scraping effect.

[0050] For further information, see Figure 7 and Figure 8 The top surface of the scraper 6 is provided with a receiving groove 62, and the bottom of the receiving groove 62 is provided with two insertion holes 63. Both insertion holes 63 are provided with insertion rods 64, and the insertion rods 64 are vertically slidably matched with the insertion holes 63. The tops of the two insertion rods 64 are connected by a grab rod 65, and the tops of the two insertion rods 64 are welded and fixed to the grab rod 65.

[0051] In order to facilitate pushing the scraper 6, the grab bar 65 can be lifted up, and after the height of the grab bar 65 is raised, the scraper 6 can be pushed back and forth. Therefore, the setting of the grab bar 65 provides a gripping position for the worker to push the scraper 6, which is convenient for pushing the scraper 6.

[0052] When there is no need to push the scraper 6, the grab bar 65 can be pushed down to reduce the height of the grab bar 65 to prevent the workpiece from being blocked from entering or exiting due to the excessive height of the grab bar 65.

[0053] For further information, see Figure 7 and Figure 8 The bottom of the plug rod 64 is welded with a limit block 66, and the lower part of the plug hole 63 is provided with a limit hole 67, the aperture of the limit hole 67 is larger than the aperture of the plug hole 63, and the limit block 66 and the limit hole 67 are vertically slidably matched. Because the aperture of the plug hole 63 is smaller, the limit hole 67 with a larger aperture can be processed first, and then a ring body can be welded on the top of the hole wall of the limit hole 67, and the inner circle of the ring body can be used as the plug hole 63.

[0054] By providing the limit block 66 and the limit hole 67 , when the grab bar 65 is lifted, the insertion rod 64 can be prevented from being completely pulled out of the insertion hole 63 , thereby preventing the grab bar 65 from being completely separated from the scraper 6 , thereby improving the reliability of operating the grab bar 65 .

[0055] The working principle of the oil baffle and oil return structure of an oil quenching furnace in the present embodiment is as follows: when the workpiece that has undergone oil quenching passes through the inlet and outlet 14, the air outlet valve 521 is opened, and the compressed air in the air storage tank 51 is ejected through the air outlet pipe 52, the air supply pipe 53, and the injection pipe 4 in sequence. The compressed air ejected from the injection pipe 4 purges the cooling oil on the surface of the workpiece to reduce the cooling oil carried on the surface of the workpiece, and the cooling oil blown down by the compressed air falls into the oil receiving tank, and the cooling oil in the oil receiving tank flows back to the oil storage tank 13 at the bottom of the quenching chamber 11 through the oil return port 21.

[0056] When there is residual cooling oil in the oil receiving tank, in order to return the remaining cooling oil to the oil storage tank 13, the worker can push the scraper 6 to scrape back and forth between the inner oil baffle plate 2 and the outer oil baffle plate 3, and push the remaining cooling oil out from the oil return port 21. The cooling oil flowing out of the oil return port 21 flows back to the oil storage tank 13 at the bottom of the quenching chamber 11.

[0057] From the above process, it can be seen that the oil baffle and oil return structure of the oil quenching furnace of this embodiment can reduce the cooling oil carried on the surface of the workpiece, and allow the cooling oil to flow back to the oil storage tank 13 through the oil return port 21 of the oil receiving tank for reuse, thereby reducing waste and saving costs.

[0058] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An oil baffle and oil return structure of an oil quenching furnace, comprising a horizontal furnace body, a quenching chamber and a heating chamber are arranged inside the furnace body, an oil storage tank is arranged at the bottom of the quenching chamber, an inlet and an outlet are arranged at the side of the quenching chamber away from the heating chamber, an inner oil baffle plate and an outer oil baffle plate are arranged at the inlet and outlet, an oil receiving tank is arranged between the inner oil baffle plate and the outer oil baffle plate, and the characteristics are that: An oil return port is provided at the bottom of the inner oil baffle plate, and the oil return port is connected to the quenching chamber. A scraper is provided inside the oil receiving groove, and the scraper is slidably matched with the oil receiving groove. A plurality of injection pipes are provided on the upper part of the inlet and outlet, and the injection pipes are connected to an air supply mechanism arranged outside the furnace body.

2. An oil retaining and oil returning structure of an oil quenching furnace according to claim 1, characterized in that: The scraper is provided with a guide rod on one side close to the inner oil baffle plate, the inner oil baffle plate is provided with a guide hole, and the guide rod is slidably matched with the guide hole.

3. An oil retaining and oil returning structure of an oil quenching furnace according to claim 1 or 2, characterized in that: The top surface of the scraper is provided with a receiving groove, the bottom of the receiving groove is provided with two insertion holes, both insertion holes are provided with insertion rods, the insertion rods and the insertion holes are vertically slidably matched, and the tops of the two insertion rods are connected by a grab bar.

4. An oil retaining and oil returning structure of an oil quenching furnace according to claim 3, characterized in that: A limiting block is provided at the bottom of the insertion rod, and a limiting hole is provided at the lower part of the insertion hole. The aperture of the limiting hole is larger than the aperture of the insertion hole, and the limiting block is vertically slidably matched with the limiting hole.

5. The oil retaining and oil returning structure of an oil quenching furnace according to claim 1 is characterized in that: The air injection pipe is connected with a metal bellows.

6. An oil retaining and oil returning structure of an oil quenching furnace according to claim 1 or 5, characterized in that: The air supply mechanism comprises an air storage tank, which is connected to an air supply pipe via an air outlet pipe, on which an air outlet valve is provided, and on which the air supply pipe is provided the injection pipe. The air storage tank is connected to an air compressor via an air inlet pipe, on which an air inlet valve is provided.

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