Sealing device for furnace mouth of pit furnace
By designing hydraulic rods and rotating mechanisms in the well-type furnace entrance, combining the annular sealing ring and the engaging sealing ring, the problems of poor sealing and vulnerability of gears in the well-type furnace entrance are solved, and effective sealing and rotation of heat and gas are achieved. Efficient use of institutions.
Patent Information
- Application Number
- CN202421140971.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-23
AI Technical Summary
The existing well furnace outlet lacks sealing devices, resulting in heat loss and harmful gas leakage. At the same time, the gears are prone to damage during rotation, which is poor in practicality.
A sealing device including a hydraulic rod, a rotating mechanism and a sealing mechanism is designed. The furnace cover is driven to rotate through the hydraulic rod, and sealing is achieved by using an annular sealing ring and a engaging sealing ring when the furnace cover overlaps with the well furnace body to prevent heat. and gas leakage.
It effectively prevents heat loss and harmful gas leakage in the well furnace body, and the rotating mechanism is easy to use, has low wear and a long service life.
Smart Images
Figure CN222257579U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pit-type furnace opening sealing, in particular to a sealing device for a pit-type furnace opening. Background Art
[0002] A pit furnace is a heat treatment equipment, and its name comes from its appearance and structure, which is similar to a deep well. Pit furnaces are mainly used for heat treatment of long shafts, rods, long tubes and mechanical parts, such as quenching, annealing, tempering, normalizing and solution treatment. Its furnace is divided into two parts, the upper part is the furnace opening (i.e. the furnace mouth), and the lower part is the heating chamber.
[0003] The furnace mouth of a pit-type furnace is usually made of heavy clay bricks, diatomaceous earth bricks, asbestos boards and other materials, which are mainly used to prevent the impact of the workpiece on the furnace mouth during lifting and hoisting. In order to prevent heat loss and leakage of harmful gases in the heating chamber, it is necessary to strengthen the sealing of the heating chamber and use a sealing device for the furnace mouth of the pit-type furnace.
[0004] According to the Chinese patent publication number CN216668274U, an automatic lifting and rotating device for a pit furnace is disclosed, which includes a pit furnace body, a furnace cover is movably installed on the top of the pit furnace body, three fixed blocks are fixedly installed on the right side of the pit furnace body, a hydraulic rod extending to the inside of the two upper fixed blocks is fixedly installed inside the bottom fixed block, a rotating mechanism fixedly connected to the right side of the furnace cover is fixedly installed on the top of the hydraulic rod, and the rotating mechanism includes a protective box, a motor, a rotating rod, a connecting sleeve, a gear, a rack and a limit plate, and a protective box is fixedly installed on the top of the hydraulic rod. The automatic lifting and rotating device for the pit furnace is provided with a hydraulic rod, and the hydraulic rod drives the furnace cover to move to separate from the pit furnace body, the output shaft of the motor inside the protective box drives the rotating rod to rotate, the rotating rod rotates and the gear rotates, the gear rotates and the meshing rack is driven to move the connecting sleeve, and the connecting sleeve moves and drives the furnace cover to achieve the effect of automatic rotation.
[0005] However, when the shaft furnace body and the furnace cover overlap, the above-mentioned device has no sealing device, resulting in heat loss and leakage of harmful gases in the shaft furnace body. At the same time, when the gear drives the furnace cover to move through the connecting sleeve, due to the limit plate, when the gear rotates, the edge of the gear will hit the limit plate, causing damage to the edge of the gear, and the practicality is poor. Utility Model Content
[0006] The utility model provides a sealing device for the furnace mouth of a pit type furnace to solve the problems of lack of sealing device and easy wear of gears in the prior art, so as to prevent heat loss and leakage of harmful gases in the pit type furnace body. At the same time, the rotating mechanism facilitates the rotation of the furnace cover, which is convenient and fast, with low wear and tear and long service life.
[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a sealing device for a pit-type furnace mouth, comprising a pit-type furnace body, one end of the pit-type furnace body is fixedly connected to a hydraulic rod, the output end of the hydraulic rod is fixedly connected to a rotating mechanism, one end of the rotating mechanism is slidably connected to a furnace cover, and a sealing mechanism is fixedly connected under the furnace cover;
[0008] The sealing mechanism includes a sealing frame, one side of which is slidably connected to multiple connecting columns, one end of each of which is fixedly connected to a reset spring, one end of the reset spring is fixedly connected to the inner wall of the sealing frame, the other end of the connecting column is fixedly connected to a clamping plate, one end of the clamping plate is fixedly connected to an annular sealing ring, and the other end edge is fixedly connected to a locking sealing ring.
[0009] Preferably, the rotating mechanism includes a fixed plate, a cylinder is fixedly connected to the inner wall of the fixed plate, a moving block is fixedly connected to the output end of the cylinder, a sliding rod is rotatably connected to the surface of the moving block, a rotating block is slidably connected to the outer wall of the sliding rod, the rotating block is rotatably connected above the fixed plate, and a strong spring is sleeved on the surface of one end of the sliding rod.
[0010] Preferably, the output end of the hydraulic rod is fixedly connected to the bottom of the fixed plate, a slide groove is provided above the fixed plate, one end of the cylinder is fixedly connected to one end of the slide groove above the fixed plate, and the moving block is slidably connected to the other end of the slide groove above the fixed plate.
[0011] Preferably, a slide groove is provided in the furnace cover, one side wall of the slide groove is fixedly connected to one end of a strong spring, and a plurality of positioning grooves are provided at one end of the surface of the sliding rod. The positioning grooves are slidably connected to the slide groove in the furnace cover and are adapted to each other.
[0012] Preferably, a sliding groove is provided under the furnace cover, one end of the sealing frame is fixedly connected in the sliding groove provided under the furnace cover, and a clamping plate is slidably connected in the sliding groove, and the clamping plate is annular.
[0013] Preferably, the locking seal ring is located in a sliding groove provided below the furnace cover, and the locking seal ring is fixedly connected above the clamping plate.
[0014] Preferably, the furnace cover is engaged with the upper opening of the pit-type furnace body, and the lower side of the annular sealing ring contacts the upper surface of the pit-type furnace body.
[0015] The working principle and use principle of the utility model are as follows: the hydraulic rod is started, so that the hydraulic rod drives the fixed plate to move upward, and the fixed plate drives the furnace cover to move upward. When the furnace cover needs to be rotated, the cylinder is started, and the cylinder drives the moving block to retract and move, so that the moving block slides on the inner wall of the fixed plate, and the moving block drives the sliding rod connected to the upper part of the moving block to move, and at the same time, the sliding rod slides on the inner wall of the rotating block, so that the position of the sliding rod remains unchanged, and the rotating block rotates above the fixed plate. At this time, the sliding rod drives the furnace cover to flip, and at the same time the sliding rod drives the strong spring to compress the strong spring on the inner wall of the furnace cover, and one end of the sliding rod slides out of the furnace cover, and the furnace cover is flipped. When the furnace cover needs to be reset, the cylinder drives the moving block to reset, so that the moving block drives the sliding rod to move back into the furnace cover, and at the same time the strong spring drives the sliding rod back to the inner wall of the furnace cover. Since the positioning groove is slidably connected with the sliding groove in the furnace cover, when the sliding rod is recovered, the surface of the sliding rod The positioning groove will engage with the sliding groove in the furnace cover, so that the sliding rod can limit the furnace cover when it is recovered, preventing the furnace cover from directly reaching the side of the rotating block surface, which is convenient for the rotation of the furnace cover. It is convenient and quick, with low wear and long service life. When the furnace cover needs to be closed, the rotating mechanism drives the furnace cover to rotate so that the furnace cover reaches the position above the pit-type furnace body, and then the hydraulic rod is started to drive the furnace cover to overlap with the top of the pit-type furnace body, so that the bottom of the annular sealing ring contacts the top of the pit-type furnace body. At the same time, the top of the annular sealing ring drives the card plate, which drives the connecting column, and the connecting column compresses the reset spring upward in the sealing frame to prevent the annular sealing ring from being squeezed too heavy. At the same time, the clamping sealing ring above the card plate contacts the inner wall of the sealing frame, so that the clamping sealing ring and the annular sealing ring are in a tight state, and the connection between the furnace cover and the pit-type furnace body is filled and sealed to prevent heat loss and leakage of harmful gases in the pit-type furnace body.
[0016] The beneficial technical effect of the utility model is that when the furnace cover needs to be closed, the rotating mechanism drives the furnace cover to rotate so that the furnace cover reaches a position above the pit-type furnace body, and then the hydraulic rod is started to drive the furnace cover to overlap with the top of the pit-type furnace body, and the sealing mechanism fills and seals the connection between the furnace cover and the pit-type furnace body to prevent heat loss and leakage of harmful gases in the pit-type furnace body. At the same time, the rotating mechanism facilitates the rotation of the furnace cover, which is convenient and quick, with low wear and tear and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the rotating mechanism structure of the utility model;
[0019] Figure 3 This is a schematic diagram of the sealing mechanism structure of the utility model;
[0020] Figure 4It is a schematic diagram of the cross-sectional structure of the utility model;
[0021] Figure 5 It is an enlarged structural schematic diagram of section A of the present invention.
[0022] Among them: 1. Pit-type furnace body; 2. Hydraulic rod; 3. Furnace cover; 11. Fixed plate; 12. Cylinder; 13. Moving block; 14. Sliding rod; 15. Rotating block; 16. Strong spring; 21. Sealing frame; 22. Reset spring; 23. Cardan; 24. Connecting column; 25. Annular sealing ring; 26. Snap-fit sealing ring. DETAILED DESCRIPTION
[0023] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings.
[0024] A sealing device for a pit furnace mouth in this specific implementation manner, such as Figure 1-5 As shown, a sealing device for a pit furnace mouth comprises a pit furnace body 1, one end of the pit furnace body 1 is fixedly connected to a hydraulic rod 2, the hydraulic rod 2 conveniently drives the furnace cover 3 to rise and fall, the output end of the hydraulic rod 2 is fixedly connected to a rotating mechanism, the rotating mechanism drives the opened furnace cover 3 to rotate, one end of the rotating mechanism is slidably connected to the furnace cover 3, a sealing mechanism is fixedly connected below the furnace cover 3, the sealing mechanism seals the connection between the furnace cover 3 and the pit furnace body 1, the sealing mechanism comprises a sealing frame 21, the sealing frame 21 connects the sealing mechanism and the furnace cover 3 to each other, and one side of the sealing frame 21 is There are multiple connecting columns 24 in the sliding connection, one end of each of the multiple connecting columns 24 is fixedly connected to a reset spring 22, one end of the reset spring 22 is fixedly connected to the inner wall of the sealing frame 21, and the multiple connecting columns 24 can drive the reset spring 22 to contract, and the other end of the connecting column 24 is fixedly connected to a clamping plate 23, one end of the clamping plate 23 is fixedly connected to an annular sealing ring 25, and the other end edge is fixedly connected to a locking sealing ring 26. A sliding groove is provided under the furnace cover 3, one end of the sealing frame 21 is fixedly connected to the sliding groove provided under the furnace cover 3, and the clamping plate 23 is slidably connected in the sliding groove, and the clamping plate 23 is annular.
[0025] Through the above technical scheme, the pit furnace body 1 and the hydraulic rod 2 are consistent with the automatic lifting and automatic rotation device of the pit furnace disclosed in Chinese Patent Publication No. CN216668274U, and the pit furnace body 1 and the hydraulic rod 2 are consistent in model. The hydraulic rod 2 drives the furnace cover 3 to lift, and the rotating mechanism drives the furnace cover 3 to rotate. When the furnace cover 3 needs to be closed, the rotating mechanism drives the furnace cover 3 to rotate, so that the furnace cover 3 reaches the position above the pit furnace body 1, and then the hydraulic rod 2 is started, so that the hydraulic rod 2 drives the furnace cover 3 to overlap with the top of the pit furnace body 1, so that the annular seal The bottom of the sealing ring 25 contacts the top of the pit-type furnace body 1, and at the same time, the top of the annular sealing ring 25 drives the clamping plate 23, so that the clamping plate 23 drives the connecting column 24, and the connecting column 24 compresses the reset spring 22 upward in the sealing frame 21 to prevent the annular sealing ring 25 from being squeezed too heavily. At the same time, the engaging sealing ring 26 above the clamping plate 23 contacts the inner wall of the sealing frame 21, so that the engaging sealing ring 26 and the annular sealing ring 25 are in a tight state, and the connection between the furnace cover 3 and the pit-type furnace body 1 is filled and sealed to prevent heat loss and leakage of harmful gases in the pit-type furnace body 1.
[0026] like Figure 1-5 As shown, the rotating mechanism includes a fixed plate 11, a cylinder 12 is fixedly connected to the inner wall of the fixed plate 11, a moving block 13 is fixedly connected to the output end of the cylinder 12, a sliding rod 14 is rotatably connected to the surface of the moving block 13, a rotating block 15 is slidably connected to the outer wall of the sliding rod 14, the rotating block 15 is rotatably connected to the top of the fixed plate 11, a strong spring 16 is sleeved on the surface of one end of the sliding rod 14, the output end of the hydraulic rod 2 is fixedly connected to the bottom of the fixed plate 11, a slide groove is opened above the fixed plate 11, one end of the cylinder 12 is fixedly connected to one end of the slide groove above the fixed plate 11, the moving block 13 is slidably connected to the other end of the slide groove above the fixed plate 11, a slide groove is opened in the furnace cover 3, one side wall in the slide groove is fixedly connected to one end of the strong spring 16, a plurality of positioning grooves are opened at one end of the surface of the sliding rod 14, the positioning groove is slidably connected to the slide groove in the furnace cover 3, and they are adapted to each other.
[0027] Through the above technical solution, the hydraulic rod 2 is started, so that the hydraulic rod 2 drives the fixed plate 11 to move upward, and the fixed plate 11 drives the furnace cover 3 to move upward. When the furnace cover 3 needs to be rotated, the cylinder 12 is started, and the cylinder 12 drives the moving block 13 to retract and move, so that the moving block 13 slides on the inner wall of the fixed plate 11, and the moving block 13 drives the sliding rod 14 connected to the upper part of the moving block 13 to move, and at the same time, the sliding rod 14 slides on the inner wall of the rotating block 15, so that the position of the sliding rod 14 remains unchanged, and the rotating block 15 rotates above the fixed plate 11. At this time, the sliding rod 14 drives the furnace cover 3 to flip, and at the same time, the sliding rod 14 drives the strong spring 16 to rotate in the furnace When the inner wall of the cover 3 is compressed, one end of the sliding rod 14 slides out of the furnace cover 3. When the furnace cover 3 is flipped over and needs to be reset, the cylinder 12 drives the moving block 13 to reset, so that the moving block 13 drives the sliding rod 14 to move back into the furnace cover 3. At the same time, the strong spring 16 drives the sliding rod 14 back to the inner wall of the furnace cover 3. Since the positioning groove is slidably connected with the slide groove in the furnace cover 3, when the sliding rod 14 is recovered, the positioning groove on the surface of the sliding rod 14 will engage with the slide groove in the furnace cover 3, so that the sliding rod 14 can limit the furnace cover 3 when it is recovered, preventing the furnace cover 3 from directly reaching the side of the surface of the rotating block 15, which is convenient for rotating the furnace cover 3, quick and convenient, with low wear and tear and a long service life.
[0028] The model of cylinder 12 is QGA. The specific dimensions of this model of cylinder 12 are used according to actual conditions. This model of cylinder 12 has a built-in magnetic sensor that can detect the position of cylinder 12 and adjust the telescopic length of cylinder 12 according to usage. It has high positioning accuracy, good sensitivity, and fast response speed, and is mainly used to drive the moving block 13 to move.
[0029] like Figure 1-5 As shown, the snap-fit sealing ring 26 is located in the sliding groove opened below the furnace cover 3, the snap-fit sealing ring 26 is fixedly connected above the clamping plate 23, the furnace cover 3 is snap-fitted to the opening above the pit-type furnace body 1, and the annular sealing ring 25 below contacts the upper surface of the pit-type furnace body 1.
[0030] Through the above technical solution, the locking seal ring 26 seals the sliding groove provided below the furnace cover 3 , and the annular seal ring 25 seals the connection between the pit-type furnace body 1 and the furnace cover 3 .
[0031] Although specific embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these specific embodiments without departing from the principles and spirit thereof, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A sealing device for a pit furnace opening, comprising a pit furnace body (1), one end of the pit furnace body (1) being fixedly connected to a hydraulic rod (2), characterized in that: The output end of the hydraulic rod (2) is fixedly connected to a rotating mechanism, one end of the rotating mechanism is slidably connected to a furnace cover (3), and a sealing mechanism is fixedly connected below the furnace cover (3); The sealing mechanism comprises a sealing frame (21), one side of the sealing frame (21) is slidably connected to a plurality of connecting columns (24), one end of each of the plurality of connecting columns (24) is fixedly connected to a return spring (22), one end of the return spring (22) is fixedly connected to the inner wall of the sealing frame (21), the other end of the connecting column (24) is fixedly connected to a clamping plate (23), one end of the clamping plate (23) is fixedly connected to an annular sealing ring (25), and the other end edge is fixedly connected to a locking sealing ring (26).
2. A sealing device for a pit furnace opening according to claim 1, characterized in that: The rotating mechanism comprises a fixed plate (11), the inner wall of the fixed plate (11) is fixedly connected to a cylinder (12), the output end of the cylinder (12) is fixedly connected to a moving block (13), the surface of the moving block (13) is rotatably connected to a sliding rod (14), the outer wall of the sliding rod (14) is slidably connected to a rotating block (15), the rotating block (15) is rotatably connected above the fixed plate (11), and a strong spring (16) is sleeved on the surface of one end of the sliding rod (14).
3. A sealing device for a pit furnace opening according to claim 2, characterized in that: The output end of the hydraulic rod (2) is fixedly connected to the bottom of the fixed plate (11), a sliding groove is provided above the fixed plate (11), one end of the cylinder (12) is fixedly connected to one end of the sliding groove above the fixed plate (11), and the moving block (13) is slidably connected to the other end of the sliding groove above the fixed plate (11).
4. A sealing device for a pit furnace opening according to claim 2 or 3, characterized in that: A slide groove is provided in the furnace cover (3), one side wall of the slide groove is fixedly connected to one end of a strong spring (16), and a plurality of positioning grooves are provided on one end of the surface of the sliding rod (14), and the positioning grooves are slidably connected to the slide groove in the furnace cover (3) and are mutually adapted.
5. A sealing device for a pit furnace opening according to claim 1, 2 or 3, characterized in that: A sliding groove is provided below the furnace cover (3), one end of the sealing frame (21) is fixedly connected to the sliding groove provided below the furnace cover (3), and the clamping plate (23) is slidably connected to the sliding groove, and the clamping plate (23) is annular.
6. A sealing device for a pit furnace opening according to claim 4, characterized in that: A sliding groove is provided below the furnace cover (3), one end of the sealing frame (21) is fixedly connected to the sliding groove provided below the furnace cover (3), and the clamping plate (23) is slidably connected to the sliding groove, and the clamping plate (23) is annular.
7. The sealing device for a pit-type furnace opening according to claim 5, characterized in that: The locking seal ring (26) is located in a sliding groove provided below the furnace cover (3), and the locking seal ring (26) is fixedly connected above the locking plate (23).
8. The sealing device for a pit furnace opening according to claim 6, characterized in that: The locking seal ring (26) is located in a sliding groove provided below the furnace cover (3), and the locking seal ring (26) is fixedly connected above the locking plate (23).
9. A sealing device for a pit furnace opening according to claim 1, 2, 3, 6 or 7, characterized in that: The furnace cover (3) is engaged with the upper opening of the pit-type furnace body (1), and the lower part of the annular sealing ring (25) contacts the upper surface of the pit-type furnace body (1).
10. The sealing device for a pit furnace opening according to claim 4, characterized in that: The furnace cover (3) is engaged with the upper opening of the pit-type furnace body (1), and the lower part of the annular sealing ring (25) contacts the upper surface of the pit-type furnace body (1).