Direct current injection type furnace leakage alarm device

Abstract

The utility model relates to the technical field of medium frequency induction heating, and discloses a direct current injection type furnace leakage alarm device which comprises a furnace body, an alarm is fixedly connected to the outer side of the furnace body, a spacing layer is arranged on the inner side of the furnace body, and a lining layer is arranged on the inner side of the spacing layer. The discharging structure is arranged in the lining layer; the discharging structure comprises a discharging opening formed in the lower side of the lining layer, a positioning groove formed outside the discharging opening, an opening plate arranged on the lower side of the discharging opening, an electric push rod fixed to the lower side of the opening plate, a guiding-out table arranged on the outer side of the opening plate and a guiding-out opening formed in the guiding-out table. When the device has the furnace leakage problem, the opening plate can descend to discharge all the molten iron, and the lower side of the lining layer has a gradient, so that the molten iron is prevented from continuously remaining in the furnace body to continuously damage the furnace leakage position.

Description

Technical Field

[0001] The utility model relates to the technical field of medium frequency induction heating, in particular to a direct current injection type furnace leakage alarm device. Background Art

[0002] At present, the leakage alarm device commonly used in the domestic foundry industry is a contact type leakage alarm device. The principle is to bury a stainless steel wire in the bottom of the furnace as an electrode, which is connected to the molten iron in the furnace. A stainless steel wire mesh is installed between the asbestos cloth on the inside of the induction coil and the crucible as another electrode. A low-voltage DC power supply is added between the two electrodes. Under normal conditions, since the furnace lining material and the asbestos board have large insulation resistance, the alarm circuit current is very small. When the furnace lining is eroded to a certain extent and the molten iron penetrates into the stainless steel wire mesh, the alarm circuit current increases rapidly. After reaching the alarm setting value, the alarm system sends an alarm signal.

[0003] In the prior art, for example, a furnace leakage alarm component for a medium frequency induction furnace is disclosed in publication number CN213578726U, which states: This furnace leakage alarm component for a medium frequency induction furnace has the effect of a furnace leakage alarm through the setting of an alarm rod, and through the coordinated setting of the alarm rod, contact piece, slide rod, spring, alarm switch, warning light and buzzer, the alarm switch can be triggered during use, thereby reminding the staff to pay attention and achieving the purpose of furnace leakage alarm.

[0004] In actual use, the above-mentioned device uses high-temperature molten iron after a furnace leak enters the alarm area to fuse the fusible component in the alarm device and then trigger the alarm device. The alarm rod in the above-mentioned device is arranged with a gap. When the temperature of the lining is too high and the molten iron melts through the lining, it may directly melt through the furnace wall without flowing through the position where the alarm rod is arranged, resulting in the alarm device being unable to operate, and it is difficult to discharge the molten iron at the bottom by dumping from the upper side; in addition, when a furnace leak occurs, the discharged molten iron still continues to damage the furnace leak area, thereby causing secondary damage to the furnace wall during the dumping process. Utility Model Content

[0005] Technical issues solved

[0006] The problem that it is difficult to drain the molten iron at the bottom when a furnace leak occurs is solved; the problem that the molten iron is likely to cause secondary damage to the furnace leak area during the process of dumping the molten iron when the furnace leaks is solved.

[0007] (II) Technical solution

[0008] To achieve the above object, the utility model provides the following technical solution: a DC injection type furnace leakage alarm device, comprising a furnace body, an alarm is fixedly connected to the outer side of the furnace body, a spacer layer is arranged on the inner side of the furnace body, and an inner lining layer is arranged on the inner side of the spacer layer;

[0009] Also included is a discharge structure disposed within the liner;

[0010] The discharge structure includes a discharge outlet arranged on the lower side of the lining layer, a positioning groove opened outside the discharge outlet, an opening plate arranged on the lower side of the discharge outlet, an electric push rod fixed on the lower side of the opening plate, a lead-out platform arranged outside the opening plate, and a lead-out outlet opened on the lead-out platform.

[0011] Preferably, a cooling zone is provided inside the furnace body, and a connecting plate is fixedly connected to the lower side of the spacing layer.

[0012] Preferably, a side wall metal mesh is provided in the spacer layer, and a first conductive wire is provided on the upper side of the side wall metal mesh.

[0013] Preferably, a bottom metal mesh is provided on the inner side of the opening plate, a second conductive wire is provided on the lower side of the bottom metal mesh, and a cooling structure is provided on the outer side of the furnace body.

[0014] Preferably, the cooling structure includes a discharge pipe arranged at the lower side of the furnace body, a collecting pipe fixed on the discharge pipe, a condensing pipe arranged at the upper side of the collecting pipe, and a pump arranged at the upper side.

[0015] Preferably, a diverter plate is provided on one side of the pump machine, and an injection pipe is fixedly connected to the outer side of the diverter plate.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a DC injection type furnace leakage alarm device, which has the following beneficial effects:

[0018] 1. Through the coordination of the discharge port and the guide port arranged at the lower side of the furnace body, when the device has a furnace leakage problem, the opening plate can be lowered to discharge all the molten iron, and the lower side of the inner lining layer has a slope to ensure that the molten iron will not continue to remain inside the furnace body and continue to damage the leakage position;

[0019] 2. When a furnace leak occurs, the cooling structure cools down the inside of the furnace by filling the cooling zone with cooling liquid, which can reduce the temperature of the spacing layer and the inner lining layer, thereby preventing the high temperature of the leaking furnace from penetrating the spacing layer and damaging the furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the furnace body of the utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the discharge structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the cooling structure of the utility model.

[0024] In the figure: 1. furnace body; 11. alarm; 12. spacing layer; 13. lining layer; 14. cooling zone; 15. connecting plate; 21. discharge port; 22. positioning groove; 23. opening plate; 24. electric push rod; 25. lead-out platform; 26. lead-out port; 31. discharge pipe; 32. collecting pipe; 33. condenser; 34. pump; 35. diverter plate; 36. injection pipe. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] Example 1

[0027] Reference Figure 1-3 , which is the first embodiment of the utility model, provides a DC injection type leakage furnace alarm device, including a furnace body 1, the furnace body 1 includes a furnace cover on the upper side, an alarm 11 is fixedly connected to the outer side of the furnace body 1, the alarm 11 is connected to form a loop through a first wire and a second wire, and the alarm 11 has a buzzer and an alarm light, which can generate sound and light reminders when the alarm is triggered, a spacing layer 12 is arranged on the inner side of the furnace body 1, an inner lining layer 13 is arranged on the inner side of the spacing layer 12, and the inner bottom side of the inner lining layer 13 has an annular slope, which can speed up the discharge of molten iron and prevent the molten iron from remaining inside;

[0028] Also included is a discharge structure disposed within the inner liner 13;

[0029] The discharge structure includes a discharge port 21 arranged on the lower side of the inner lining 13, the discharge port 21 is made of the same material as the inner lining 13 but passes through the spacer layer 12 and the furnace body 1, a positioning groove 22 is opened outside the discharge port 21, an opening plate 23 is arranged on the lower side of the discharge port 21, the material of the opening plate 23 is the same as that of the inner lining 13, and the outer side is provided with a positioning block that can be inserted into the positioning groove 22, when the positioning block is located in the positioning groove 22, the middle part of the opening plate 23 enters the discharge port 21 and closes the discharge port 21, an electric push rod 24 is fixed on the lower side of the opening plate 23, when the alarm is triggered, the electric push rod 24 will retract, under normal circumstances, the electric push rod 24 is in an extended state, and an outlet platform 25 is arranged on the outer side of the opening plate 23, the outlet platform 25 surrounds the discharge port 21, and has a supporting base, an outlet 26 is opened on the outlet platform 25, the outlet 26 is used to guide the molten iron to continue to move in other directions, and the molten iron can be discharged into other containers.

[0030] A cooling zone 14 is provided inside the furnace body 1 , and the cooling zone 14 is used to cool the spacing layer 12 when the alarm is triggered. A connecting plate 15 is fixedly connected to the lower side of the spacing layer 12 , and the connecting plate 15 is used to connect and support the spacing layer 12 and the furnace body 1 .

[0031] A side wall metal mesh is arranged in the spacer layer 12 and is evenly laid in the spacer layer 12. A first wire is arranged on the upper side of the side wall metal mesh and passes through the furnace cover on the upper side of the furnace body 1 to connect with the alarm 11, which is one end of the electrode.

[0032] A bottom metal mesh is arranged on the inner side of the opening plate 23, and there is conductivity between the bottom metal mesh and the opening plate 23. A second wire is arranged on the lower side of the bottom metal mesh, and the second wire is also connected to the alarm 11, which is the other end of the electrode. A cooling structure is arranged on the outer side of the furnace body 1.

[0033] During use, under normal conditions, the side wall metal mesh is arranged in the spacer layer 12, so there is a large resistance, resulting in only a small current passing through the alarm 11, and no alarm occurs. When a furnace leakage problem occurs inside the furnace body 1, that is, the high-temperature molten iron melts through the inner lining 13, at this time, the side wall metal mesh is connected to the molten iron, so at this time, the first wire and the molten iron, the bottom metal mesh and the second wire form a metal path, thereby making the resistance instantly smaller, and then increasing the current. At this time, the alarm 11 starts to alarm. When the alarm 11 starts to alarm, the electric push rod 24 is started, driving the opening plate 23 to descend in height, thereby opening the discharge port 21 closed by the opening plate 23, and then discharging the molten iron from the discharge port 21, and the molten iron is discharged into another container through the outlet 26 on the outlet platform 25, thereby protecting the safety of personnel and equipment.

[0034] Example 2

[0035] Reference Figure 1-4 , which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that: the cooling structure includes a discharge pipe 31 arranged at the lower side of the furnace body 1, the discharge pipe 31 is used to discharge the cooling liquid, a collecting pipe 32 fixed on the discharge pipe 31, a condenser 33 arranged on the upper side of the collecting pipe 32, the condenser 33 can cool the liquid that has absorbed the high temperature of the spacer layer 12, and a pump 34 arranged on the upper side. The pump 34 can send the low-temperature liquid in the condenser 33 into the diverter plate 35, and the pump 34 is also connected to a cooling liquid storage device. In addition, the pump 34 is used to inject cooling liquid into the diverter plate 35 when an alarm occurs.

[0036] A diverter plate 35 is provided on one side of the pump 34 , and a liquid injection pipe 36 is fixedly connected to the outer side of the diverter plate 35 . The liquid injection pipe 36 is evenly arranged on the furnace cover and penetrates the furnace cover to deliver coolant into the cooling zone 14 .

[0037] During use, when an alarm occurs, the pump 34 first sends the coolant in the coolant storage device into the diverter plate 35. During the process, the pump 34 increases the pressure on the coolant, so that it quickly passes through the diverter plate 35 and enters the cooling zone 14 through the injection pipe 36. Since the coolant is injected quickly and quickly converges after entering the cooling zone 14, the coolant will directly absorb the heat of the spacing layer 12 and disperse the temperature to other coolants. Then, this part of the heated coolant will enter the discharge pipe 31, and after being collected by the collecting pipe 32, it will enter the condenser 33 for cooling. After the cooling is completed, the coolant will flow back to the cooling zone 14 through the pump 34 again to cool the spacing layer 12, prevent high temperature from penetrating the spacing layer 12 and causing high temperature molten iron to enter the furnace body 1 and cause further damage. The spacing layer 12 can be cooled and protected during the discharge of the high temperature molten iron, thereby protecting the furnace body 1.

[0038] The remaining structures are the same as those of Example 1.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A DC injection furnace leakage alarm device, comprising a furnace body (1), an alarm (11) being fixedly connected to the outer side of the furnace body (1), a spacer layer (12) being arranged on the inner side of the furnace body (1), and an inner lining layer (13) being arranged on the inner side of the spacer layer (12); Features: Also included is a discharge structure disposed within the inner lining layer (13); The discharge structure comprises a discharge port (21) arranged at the lower side of the inner lining layer (13), a positioning groove (22) provided outside the discharge port (21), an opening plate (23) arranged at the lower side of the discharge port (21), an electric push rod (24) fixed at the lower side of the opening plate (23), a lead-out platform (25) arranged at the outer side of the opening plate (23), and a lead-out port (26) provided on the lead-out platform (25).

2. A DC injection type furnace leakage alarm device according to claim 1, characterized in that: A cooling zone (14) is provided inside the furnace body (1), and a connecting plate (15) is fixedly connected to the lower side of the spacing layer (12).

3. A DC injection furnace leakage alarm device according to claim 1, characterized in that: A side wall metal mesh is arranged in the spacer layer (12), and a first conductive wire is arranged on the upper side of the side wall metal mesh.

4. A DC injection type furnace leakage alarm device according to claim 1, characterized in that: A bottom metal mesh is arranged on the inner side of the opening plate (23), a second wire is arranged on the lower side of the bottom metal mesh, and a cooling structure is arranged on the outer side of the furnace body (1).

5. A DC injection furnace leakage alarm device according to claim 4, characterized in that: The cooling structure comprises a discharge pipe (31) arranged at the lower side of the furnace body (1), a collecting pipe (32) fixed on the discharge pipe (31), a condensing pipe (33) arranged at the upper side of the collecting pipe (32), and a pump (34) arranged at the upper side.

6. A DC injection furnace leakage alarm device according to claim 5, characterized in that: A diverter plate (35) is provided on one side of the pump (34), and a liquid injection pipe (36) is fixedly connected to the outer side of the diverter plate (35).

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