Efficient and safe self-locking linkage device for rotating part of preheating pot

Abstract

The utility model discloses an efficient and safe self-locking linkage device for a rotating part of a preheating pot, which comprises a preheating pot body, a rotatable reamer is assembled on the preheating pot body, the reamer is rotatably connected with a rotating joint through an inner graphite ring and an assembly part, a contact ring is arranged on the outer side of the rotating joint, and the contact ring is connected with the rotating joint. A limiting switch which is located on the outer side of the contact ring and can be triggered is installed on the preheating pot body, and the limiting switch triggers and disconnects a drive circuit of the preheating pot body. According to the efficient and safe self-locking linkage device for the rotating part of the preheating pot, the contact ring is additionally arranged through the rotating connector, the limiting switch with the contact attached to the contact ring is arranged, the limiting switch controls a reamer driving equipment power circuit through a relay or a central control room computer, and medium leakage caused by the fact that the rotating connector is driven by a reamer to break a hose is sequentially avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of material preheating equipment in the metallurgical industry, in particular to a highly efficient and safe self-locking linkage device for a rotating part of a preheating pot. Background Art

[0002] In the metallurgical industry, a heating furnace is a device (industrial furnace) that heats materials or workpieces (usually metals) to rolling and forging temperature. Heating furnaces are used in many industries such as petroleum, chemical industry, metallurgy, machinery, heat treatment, surface treatment, building materials, electronics, materials, light industry, daily chemicals, and pharmaceuticals.

[0003] The main function of the preheating pot is to heat and blend the materials at high temperature. The heating of the preheating pot mainly relies on heat conduction between the pot body and the reamer. The heat conduction medium is 260-265℃ heat transfer oil. While the reamer is conducting heat, it stirs the materials in the pot, and the rotary joint bears the central responsibility of heat transfer oil supply and return. Design defects: the preheating pot operates continuously. The heat transfer oil is prone to produce impurities such as residual carbon at high temperatures. The rotating spare parts of the rotary joint are graphite rings (oil-free bearings). When the heat transfer oil passes through, impurities will be deposited in the gap of the graphite ring, causing the graphite ring to get stuck, resulting in the reamer driving the rotary joint to rotate together, causing the heat transfer oil metal hose to crack or break, and the high-temperature heat transfer oil to leak seriously, resulting in a major production safety accident. Utility Model Content

[0004] The purpose of the utility model is to provide a highly efficient and safe self-locking linkage device for the rotating part of a preheating pot, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A highly efficient and safe self-locking linkage device for the rotating part of a preheating pot comprises a preheating pot body, wherein the preheating pot body is equipped with a rotatable reamer, wherein the reamer is rotatably connected to a rotary joint through an inner graphite ring and an assembly, a touch ring is installed on the outer side of the rotary joint, a limit switch located on the outer side of the touch ring and capable of being triggered is installed on the preheating pot body, and the limit switch triggers and disconnects the driving circuit of the preheating pot body.

[0007] As a further solution of the utility model: the limit switch is movably installed on the preheating pot body through a bracket, the bracket is ring-shaped, and the limit switch is fixed to the outside of the bracket by bolts.

[0008] As a further solution of the utility model: the assembly includes a connecting ring, an oil catcher ring, a sealing ring and an outer graphite ring, the rotary joint is rotatably connected to the connecting ring through a bearing, the connecting ring is fixed to the oil catcher ring through bolts, the outer side of the oil catcher ring is fixed to the preheating pot body, and the oil catcher ring is rotatably connected to the sealing ring through the outer graphite ring.

[0009] As a further solution of the utility model: a positioning groove is provided on the sealing ring, the oil catcher ring and the outer graphite ring are located in the groove, and the sealing ring is half-wrapped on the outside of the oil catcher ring and the outer graphite ring.

[0010] As a further solution of the utility model: the oil catcher ring, the rotary joint, the sealing ring and the outer graphite ring form a closed annular chamber for collecting the permeate.

[0011] As a further solution of the utility model: it also includes a leak-proof system, which includes a leak-proof pipeline and a liquid pump. The leak-proof pipeline runs through the sealing ring, one end of the leak-proof pipeline is located inside the annular chamber, and a liquid pump is provided on the leak-proof pipeline to extract the permeate inside the annular chamber.

[0012] As a further solution of the utility model: the output end of the leak-clearing pipeline is connected to the preheating pot body.

[0013] As a further solution of the utility model: the output end of the leak cleaning pipeline is connected to a sewage tank.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The rotating part of the preheating pot is equipped with an efficient and safe self-locking linkage device. A contact ring is installed on the rotary joint, and a limit switch with the contact close to the contact ring is provided. The limit switch controls the power circuit of the reamer drive equipment through a relay or a computer in the central control room, thereby preventing the rotary joint from being driven by the reamer to break the hose and cause medium leakage.

[0016] 2. The rotating part of the preheating pot is equipped with an efficient and safe self-locking linkage device. The rotating joint is rotatably connected and its rotation is limited by resistance. The resistance setting can be set according to the strength of the inner graphite ring. When the rotating joint breaks through the resistance, it rotates to trigger the limit switch.

[0017] 3. The rotating part of the preheating pot is equipped with an efficient and safe self-locking linkage device, which collects the permeate through the annular chamber, cleans the permeate and avoids leakage of the permeate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural stereogram of a highly efficient and safe self-locking linkage device for the rotating part of a preheating pot;

[0019] Figure 2 This is a structural front view of a highly efficient and safe self-locking linkage device for the rotating part of a preheating pot;

[0020] Figure 3 The present invention is a structural cross-sectional view of a highly efficient and safe self-locking linkage device for the rotating part of a preheating pot.

[0021] In the figure: 1. Preheating pot body; 2. Reamer; 3. Oil catcher ring; 4. Rotary joint; 5. Touch ring; 6. Central joint; 7. Hose; 8. Leakage cleaning pipeline; 9. Bracket; 10. Limit switch; 11. Liquid pump; 12. Annular chamber; 13.; 14. Inner graphite ring; 15. Sealing ring; 16. Outer graphite ring; 17. Connecting ring. DETAILED DESCRIPTION

[0022] See also Figures 1 to 3 In the embodiment of the utility model, a high-efficiency and safe self-locking linkage device for the rotating part of a preheating pot comprises a preheating pot body 1, the preheating pot body 1 is equipped with a rotatable reamer 2, the reamer 2 is rotatably connected to a rotary joint 4 through an inner graphite ring 14 and an assembly, a touch ring 5 is installed on the outer side of the rotary joint 4, a limit switch 10 located on the outer side of the touch ring 5 and capable of being triggered is installed on the preheating pot body 1, the limit switch 10 triggers and disconnects the driving circuit of the preheating pot body 1, the reamer 2 and the rotary joint 4 can rotate with each other, the touch ring 5 on the outer side of the rotary joint 4 contacts the limit switch 10, the rotation direction of the reamer 2 is fixed, so when the graphite ring is stuck and the reamer drives the rotary joint 4 to rotate together, the rotary joint 4 drives the touch ring 5 to trigger the limit switch 10. The limit switch 10 controls the power circuit of the reamer 2 driving device of the preheating pot body 1. The power circuit of the reamer 2 driving device can be controlled by a relay or a computer in the central control room. At the same time, the computer in the central control room controls the medium to stop circulating. Before the hose 7 is disconnected from the central joint 6, even if the rotation of the reamer 2 and the circulation of the medium are stopped, the cracking or breaking of the heat medium oil metal hose 7 is reduced, and the high-temperature heat medium oil is seriously leaked, resulting in a major production safety accident. The resistance between the rotary joint 4 and the preheating pot body 1 can be limited by a flexible rotation limiting structure, which increases the rotation resistance of the rotary joint 4 and prevents the inner graphite ring 14 from driving the rotary joint 4 to rotate under normal resistance to trigger the limit switch 10. The rotation limiting structure can be a damping ring, a spring and other structures.

[0023] In a preferred embodiment, the limit switch 10 is movably mounted on the preheating pot body 1 via a bracket 9, the bracket 9 is ring-shaped, and the limit switch 10 is fixed to the outside of the bracket 9 by bolts. The limit switch 10 can be adaptively adjusted so that the contact of the limit switch 10 is in close contact with the contact ring 5, and is triggered at the first time when the reamer 2 drives the contact ring 5 to rotate, thereby reducing losses.

[0024] In a preferred embodiment, the assembly includes a connecting ring 17, an oil catcher ring 3, a sealing ring 15 and an outer graphite ring 16. The rotary joint 4 is rotatably connected to the connecting ring 17 through a bearing. The connecting ring 17 is fixed to the oil catcher ring 3 through bolts. The outer side of the oil catcher ring 3 is fixed to the preheating pot body 1. The oil catcher ring 3 is rotatably connected to the sealing ring 15 through the outer graphite ring 16. This connection method allows the rotary joint 4 to be installed without being restricted by bolt fastening and fixing. Resistance is applied to the rotary joint 4. When the rotary joint 4 does not break through the resistance, the reamer 2 operates normally and the rotary joint 4 does not rotate. When the inner graphite ring 14 is stuck and breaks through the resistance, the rotary joint 4 rotates to trigger the limit switch 10. The critical value of the resistance applied by the rotary joint 4 and the critical value of the damage of the inner graphite ring 14 can be close to, but cannot exceed, thereby protecting the inner graphite ring 14 from damage.

[0025] In a preferred embodiment, a positioning groove is provided on the sealing ring 15, the oil catcher ring 3 and the outer graphite ring 16 are located in the groove, the sealing ring 15 is half-wrapped on the outside of the oil catcher ring 3 and the outer graphite ring 16, the oil catcher ring 3, the rotary joint 4, the sealing ring 15 and the outer graphite ring 16 form a closed annular chamber 12 for collecting the permeate, and also includes a leakage prevention system, the leakage prevention system includes a leakage cleaning pipeline 8 and a liquid pump 11, the leakage cleaning pipeline 8 passes through the sealing ring 15, one end of the leakage cleaning pipeline 8 is located inside the annular chamber 12, the leakage cleaning pipeline 8 is provided with a liquid pump 11 to extract the permeate inside the annular chamber 12, the permeate permeated from the sealing gap of the inner graphite ring 14 enters the annular chamber 12, the structure can collect the permeate permeated from the sealing gap of the inner graphite ring 14, and extract it through the leakage cleaning pipeline 8 and the liquid pump 11 to prevent the permeate from flowing out.

[0026] In a preferred embodiment, the output end of the leak clearing pipeline 8 is connected to the preheating pot body 1 , and if the liquid in the preheating pot body 1 penetrates into the annular chamber 12 , the liquid can be circulated back to the preheating pot body 1 .

[0027] In a preferred embodiment, the output end of the leak cleaning pipeline 8 is connected to a sewage tank. If the heat medium liquid penetrates into the annular chamber 12, it needs to be sent to the sewage tank if it is not recovered.

[0028] It should be noted that the above embodiments all belong to the same utility model concept, and the description of each embodiment has its own focus. For matters that are not described in detail in some embodiments, reference can be made to the description in other embodiments.

[0029] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A highly efficient and safe self-locking linkage device for the rotating part of a preheating pot, comprising a preheating pot body (1), wherein the preheating pot body (1) is equipped with a rotatable reamer (2), characterized in that: The reamer (2) is rotatably connected to the rotary joint (4) via an inner graphite ring (14) and an assembly. A contact ring (5) is installed on the outer side of the rotary joint (4). A limit switch (10) located on the outer side of the contact ring (5) and capable of being triggered is installed on the preheating pot body (1). The limit switch (10) triggers and disconnects the drive circuit of the preheating pot body (1).

2. A highly efficient and safe self-locking linkage device for the rotating part of a preheating pot according to claim 1, characterized in that: The limit switch (10) is movably mounted on the preheating pot body (1) via a bracket (9); the bracket (9) is ring-shaped, and the limit switch (10) is fixed to the outside of the bracket (9) via bolts.

3. The high-efficiency and safe self-locking linkage device for the rotating part of the preheating pot according to claim 1 is characterized in that: The assembly comprises a connecting ring (17), an oil catcher ring (3), a sealing ring (15) and an outer graphite ring (16); the rotary joint (4) is rotatably connected to the connecting ring (17) via a bearing; the connecting ring (17) is fixed to the oil catcher ring (3) via bolts; the outer side of the oil catcher ring (3) is fixed to the preheating pot body (1); and the oil catcher ring (3) is rotatably connected to the sealing ring (15) via the outer graphite ring (16).

4. A highly efficient and safe self-locking linkage device for the rotating part of a preheating pot according to claim 3, characterized in that: The sealing ring (15) is provided with a positioning groove, the oil catcher ring (3) and the outer graphite ring (16) are located in the groove, and the sealing ring (15) is half-wrapped on the outside of the oil catcher ring (3) and the outer graphite ring (16).

5. The highly efficient and safe self-locking linkage device for the rotating part of the preheating pot according to claim 3 is characterized in that: The oil catcher ring (3), the rotary joint (4), the sealing ring (15) and the outer graphite ring (16) form a closed annular chamber (12) for collecting permeate.

6. A highly efficient and safe self-locking linkage device for the rotating part of a preheating pot according to claim 5, characterized in that: The invention also comprises a leak prevention system, which comprises a leak prevention pipeline (8) and a liquid pump (11). The leak prevention pipeline (8) passes through the sealing ring (15), one end of the leak prevention pipeline (8) is located inside the annular chamber (12), and the leak prevention pipeline (8) is provided with a liquid pump (11) for extracting the permeate inside the annular chamber (12).

7. A highly efficient and safe self-locking linkage device for the rotating part of a preheating pot according to claim 6, characterized in that: The output end of the leak clearing pipeline (8) is connected to the preheating pot body (1).

8. The high-efficiency and safe self-locking linkage device for the rotating part of the preheating pot according to claim 6 is characterized in that: The output end of the leak cleaning pipeline (8) is connected to a sewage tank.

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