Combined refractory fiber felt pit furnace cover

Abstract

The utility model discloses a combined refractory fiber felt pit furnace cover, which relates to the technical field of pit furnace covers and comprises a support frame, a telescopic cylinder is fixedly connected to the side end of the support frame, a first motor is arranged at the side end of the support frame, an inner furnace cover is fixedly connected to the driving end of the first motor, and an outer furnace cover is arranged at the outer end of the inner furnace cover. By arranging the inner furnace cover and the outer furnace cover which are combined for use, the pit furnace can be sealed, whether the inner furnace cover is singly opened or the inner furnace cover and the outer furnace cover are opened together can be selected according to the size of an object needing to be heated, and when a small object is placed, the furnace cover of the pit furnace does not need to be completely opened, so that the loss of heat in the furnace can be effectively reduced; the problems that when objects are placed in an existing pit furnace, no matter how large the objects are, a furnace cover needs to be completely opened, when small objects are placed in the existing pit furnace, a large amount of heat overflows from a furnace opening, energy is wasted, and the machining cost is increased in a disguised mode are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pit-type furnace covers, in particular to a combined refractory fiber felt pit-type furnace cover. Background Art

[0002] The pit furnace is one of the main boiler forms in today's mechanical processing production. Its furnace body is a cylindrical deep well. The workpiece is vertically loaded into the furnace for heating by a special crane. This equipment often has a protective atmosphere during production, so that the surface accuracy of the workpiece can be guaranteed after completion, and the toughness and rigidity of the workpiece are effectively guaranteed. Based on these advantages, the pit furnace is widely used in social production. When using the pit furnace, it is necessary to use it in conjunction with the matching furnace cover to achieve the sealing of the pit furnace, thereby improving processing efficiency.

[0003] However, in the existing pit-type furnace, when placing an object, no matter how big the object is, the furnace cover needs to be fully opened. When placing a smaller object, a large amount of heat will overflow from the furnace mouth, causing energy waste and increasing the processing cost in disguise. The furnace wall and furnace cover of the pit-type furnace are filled with fiber felt for thermal insulation. After long-term use, the fiber felt will oxidize, turn yellow, and harden, and its thermal insulation effect will be seriously reduced. Therefore, it needs to be replaced from time to time. However, the existing pit-type furnace cover is an integral part, and the side seams are welded, which makes it difficult to replace the fiber felt board used for thermal insulation inside.

[0004] To this end, we provide a combined refractory fiber felt pit furnace cover to solve the above problems. Utility Model Content

[0005] 1) Technical issues solved

[0006] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide a combined refractory fiber felt pit type furnace cover.

[0007] 2) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined refractory fiber felt pit-type furnace cover, comprising a support frame, a telescopic cylinder is fixedly connected to the side end of the support frame, a No. 1 motor is arranged on the side end of the support frame, an inner furnace cover is fixedly connected to the driving end of the No. 1 motor, an outer furnace cover is arranged on the outer end of the inner furnace cover, and a sealing ring is arranged on the lower end of the outer furnace cover.

[0009] Furthermore, a No. 2 motor is fixedly connected to the lower end of the support frame, a clamping block is fixedly connected to the lower end of the telescopic cylinder, a sliding rod is fixedly connected to the upper end of the No. 1 motor, and the sliding rod is slidably connected in the support frame.

[0010] Furthermore, the inner furnace cover includes a top plate, the top plate is fixedly connected to the driving end of the No. 1 motor, the upper end of the top plate is fixedly connected with a slide block, and the clamping block is slidably connected in the slide block.

[0011] Furthermore, the inner furnace cover includes an inner cover bottom, the inner cover bottom is connected to the top plate by bolts, a first fiber felt board is arranged inside the inner cover bottom, a second fiber felt board is arranged inside the inner cover bottom, and the second fiber felt board is located at the upper end of the first fiber felt board.

[0012] Furthermore, a locking block is fixedly connected to the lower end of the inner cover bottom, and the locking blocks are evenly distributed on the edge of the lower end of the inner cover bottom. A locking head is fixedly connected to the side end of the locking block, and the locking block and the locking head form an "L" shape.

[0013] Furthermore, the outer furnace cover includes a semicircular ring plate, the outer furnace cover includes an outer cover bottom, the semicircular ring plate and the outer cover bottom are connected by bolts, a third fiber felt plate is arranged in the outer cover bottom, and the third fiber felt plate is in a circular ring shape.

[0014] Furthermore, a locking groove is provided on the inner wall of the outer cover bottom, and the locking block can be slidably connected in the locking groove. A head groove is provided on the side end of the locking groove, and the locking head can be clamped in the head groove.

[0015] III) Beneficial effects

[0016] Compared with the prior art, the combined refractory fiber felt pit furnace cover has the following beneficial effects:

[0017] The utility model discloses the utility model is provided with an inner furnace cover and an outer furnace cover, and the inner furnace cover and the outer furnace cover are used in combination to seal the pit-type furnace, and it is possible to choose whether to open the inner furnace cover alone or to open the inner furnace cover and the outer furnace cover together according to the size of the object to be heated. Specifically, when the object to be heated is small and can be put into the pit-type furnace from the inner furnace cover, the telescopic cylinder is started to lift the inner furnace cover to make it separate from the outer furnace cover, and then the No. 2 motor rotates the support frame to drive the inner furnace cover to move away from the upper end of the pit-type furnace, and the object is put into the pit-type furnace by a crane, and then the No. 2 motor drives the support frame to rotate and reset, and the telescopic cylinder is pushed down to insert the inner furnace cover into the outer furnace cover, so that when placing smaller objects, it is not necessary to fully open the furnace cover of the pit-type furnace, which can effectively reduce the heat loss in the furnace, and solves the problem that the existing pit-type furnace needs to fully open the furnace cover when placing objects regardless of the size of the objects, and when placing smaller objects, a large amount of heat will overflow from the furnace mouth, causing energy waste, which increases the processing cost in disguise.

[0018] 2. The utility model divides the inner furnace cover into a top plate and an inner cover bottom, and divides the outer furnace cover into a semicircular ring plate and an outer cover bottom. The top plate can be removed from the inner cover bottom, so that the first fiber felt plate and the second fiber felt plate can be replaced. The semicircular ring plate can be removed from the outer cover bottom, so that the third fiber felt plate can be replaced, thereby solving the problem of the existing furnace cover for pit-type furnaces, in which the fiber felt plate used for thermal insulation inside is difficult to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model device;

[0020] Figure 2 This is a schematic diagram of the disassembled structure of the inner furnace cover and the outer furnace cover of the utility model;

[0021] Figure 3 This is a schematic diagram of the disassembly structure of the inner furnace cover of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the lower end of the inner cover of the utility model;

[0023] Figure 5 This is a schematic diagram of the disassembly structure of the outer furnace cover of the utility model;

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of the device of the utility model.

[0025] In the figure: 1. support frame; 101. No. 2 motor; 2. telescopic cylinder; 201. clamping block; 3. No. 1 motor; 301. sliding rod; 4. inner furnace cover; 401. top plate; 402. slide block; 403. inner cover bottom; 404. first fiber felt plate; 405. second fiber felt plate; 406. locking block; 407. locking head; 5. outer furnace cover; 501. semicircular ring plate; 502. outer cover bottom; 503. third fiber felt plate; 504. locking groove; 505. head groove; 6. sealing ring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1-Figure 6As shown, the utility model provides a technical solution: a combined refractory fiber felt pit type furnace cover, including a support frame 1, a No. 2 motor 101 is fixedly connected to the lower end of the support frame 1, the No. 2 motor 101 is used to drive the support frame 1 to rotate, so that the furnace cover deviates from the upper end of the pit type furnace, so that the object to be heated can be conveniently placed in the pit type furnace using a crane, a No. 1 motor 3 is arranged at the side end of the support frame 1, an inner furnace cover 4 is fixedly connected to the driving end of the No. 1 motor 3, an outer furnace cover 5 is arranged at the outer end of the inner furnace cover 4, the No. 1 motor 3 is used to drive the inner furnace cover 4 to rotate, so that the inner furnace cover 4 is clamped with the outer furnace cover 5, the No. 1 motor 3 is fixedly connected to the upper end of the No. 1 motor 3, the slide bar 301 is slidably connected in the support frame 1, and the No. 1 motor 3 can be constrained so that it cannot rotate itself and can only move up and down.

[0028] The inner furnace cover 4 includes a top plate 401, which is fixedly connected to the driving end of the No. 1 motor 3, and a slide block 402 is fixedly connected to the upper end of the top plate 401. The side end of the support frame 1 is fixedly connected to the telescopic cylinder 2, and the lower end of the telescopic cylinder 2 is fixedly connected to the clamping block 201. The clamping block 201 is slidably connected in the slide block 402, so that the telescopic cylinder 2 can drive the inner furnace cover 4 to move up and down without affecting the No. 1 motor 3 to drive the inner furnace cover 4 to rotate. The inner furnace cover 4 includes an inner cover bottom 403, and the inner cover bottom 403 is connected to the top plate 401 by bolts. Then, the top plate 401 can be removed from the inner cover bottom 403. A first fiber felt board 404 is arranged inside the inner cover bottom 403. A second fiber felt board 405 is arranged inside the inner cover bottom 403. The second fiber felt board 405 is located at the upper end of the first fiber felt board 404. Both the first fiber felt board 404 and the second fiber felt board 405 are for heat insulation of the inner furnace cover 4. The second fiber felt board 405 is located at the connecting gap between the inner furnace cover 4 and the outer furnace cover 5, which can prevent air leakage in the connecting gap between the two, thereby ensuring the airtightness of the device.

[0029] The outer furnace cover 5 includes a semicircular ring plate 501, and the outer furnace cover 5 includes an outer cover bottom 502. The semicircular ring plate 501 and the outer cover bottom 502 are connected by bolts, so that the semicircular ring plate 501 can be removed from the outer cover bottom 502. A third fiber felt plate 503 is arranged in the outer cover bottom 502. The third fiber felt plate 503 is annular, which can make the outer furnace cover 5 have the effect of heat preservation and heat insulation.

[0030] A sealing ring 6 is provided at the lower end of the outer furnace cover 5, and the sealing ring 6 is used to ensure that the outer furnace cover 5 is tightly connected to the pit-type furnace. A locking block 406 is fixedly connected to the lower end of the inner cover bottom 403. The locking blocks 406 are evenly distributed on the lower edge of the inner cover bottom 403. The side ends of the locking blocks 406 are fixedly connected to the locking heads 407. The locking blocks 406 and the locking heads 407 form an "L" shape. A locking groove 504 is provided on the inner wall of the outer cover bottom 502. The locking block 406 can be slidably connected in the locking groove 504. A head groove 505 is provided at the side end of the locking groove 504. The locking head 407 can be snapped into the head groove 505. The locking block 406 and the locking head 407 are pushed into the locking groove 504 by the telescopic cylinder 2, and then the inner furnace cover 4 is driven to rotate by the No. 1 motor 3, so that the locking head 407 is snapped into the head groove 505, so that the inner furnace cover 4 can be connected to the outer furnace cover 5 together.

[0031] Working principle: when the object to be heated is small and can be put into the pit furnace from the inner furnace cover 4, the No. 1 motor 3 is used to drive the inner furnace cover 4 to rotate, so that the lock head 407 at the lower end is disengaged from the head slot 505, and then the telescopic cylinder 2 is started to lift the inner furnace cover 4 to disengage it from the outer furnace cover 5, and then the No. 2 motor 101 rotates the support frame 1 to drive the inner furnace cover 4 to move away from the upper end of the pit furnace, and the object is put into the pit furnace by a crane, and then the No. 2 motor 101 drives the support frame 1 to rotate and reset, and the telescopic cylinder 2 is pushed down, so that the lock block 406 and the lock head 407 can be inserted into the lock slot 504, so that the inner furnace cover 4 can be inserted into the outer furnace cover 5, thereby completing the placement of the small object;

[0032] When the heated object is large and needs to be opened together with the inner furnace cover 4 and the outer furnace cover 5, the No. 1 motor 3 is used to drive the inner furnace cover 4 to rotate, so that the lock 407 is engaged in the head slot 505, so that the inner furnace cover 4 and the outer furnace cover 5 can be connected together, and the telescopic cylinder 2 can drive the inner furnace cover 4 and the outer furnace cover 5 to move upward together, so that they can be separated from the furnace mouth of the pit furnace together;

[0033] By dividing the inner furnace cover 4 into a top plate 401 and an inner cover bottom 403, and dividing the outer furnace cover 5 into a semicircular ring plate 501 and an outer cover bottom 502, the top plate 401 can be removed from the inner cover bottom 403, so that the first fiber felt plate 404 and the second fiber felt plate 405 can be replaced, and the semicircular ring plate 501 can be removed from the outer cover bottom 502, so that the third fiber felt plate 503 can be replaced.

Claims

1. A combined refractory fiber felt pit furnace cover, comprising a support frame (1), characterized in that: The side end of the support frame (1) is fixedly connected to a telescopic cylinder (2), the side end of the support frame (1) is provided with a No. 1 motor (3), the driving end of the No. 1 motor (3) is fixedly connected to an inner furnace cover (4), the outer end of the inner furnace cover (4) is provided with an outer furnace cover (5), and the lower end of the outer furnace cover (5) is provided with a sealing ring (6).

2. The combined refractory fiber felt pit furnace cover according to claim 1, characterized in that: The lower end of the support frame (1) is fixedly connected to a No. 2 motor (101), the lower end of the telescopic cylinder (2) is fixedly connected to a clamping block (201), the upper end of the No. 1 motor (3) is fixedly connected to a sliding rod (301), and the sliding rod (301) is slidably connected in the support frame (1).

3. The combined refractory fiber felt pit furnace cover according to claim 2, characterized in that: The inner furnace cover (4) comprises a top plate (401), the top plate (401) is fixedly connected to the driving end of the No. 1 motor (3), a slide block (402) is fixedly connected to the upper end of the top plate (401), and the clamping block (201) is slidably connected in the slide block (402).

4. The combined refractory fiber felt pit furnace cover according to claim 3, characterized in that: The inner furnace cover (4) comprises an inner cover bottom (403), wherein the inner cover bottom (403) is connected to the top plate (401) by bolts, wherein a first fiber felt board (404) is arranged inside the inner cover bottom (403), and wherein a second fiber felt board (405) is arranged inside the inner cover bottom (403), and wherein the second fiber felt board (405) is located at the upper end of the first fiber felt board (404).

5. The combined refractory fiber felt pit furnace cover according to claim 4, characterized in that: The lower end of the inner cover bottom (403) is fixedly connected with a locking block (406), and the locking blocks (406) are evenly distributed on the lower edge of the inner cover bottom (403). The side end of the locking block (406) is fixedly connected with a locking head (407), and the locking block (406) and the locking head (407) form an "L" shape.

6. The combined refractory fiber felt pit furnace cover according to claim 5, characterized in that: The outer furnace cover (5) comprises a semicircular ring plate (501), the outer furnace cover (5) comprises an outer cover bottom (502), the semicircular ring plate (501) and the outer cover bottom (502) are connected by bolts, a third fiber felt plate (503) is arranged inside the outer cover bottom (502), and the third fiber felt plate (503) is in a circular ring shape.

7. The combined refractory fiber felt pit furnace cover according to claim 6, characterized in that: The inner wall of the outer cover bottom (502) is provided with a locking groove (504), and the locking block (406) can be slidably connected in the locking groove (504). The side end of the locking groove (504) is provided with a head groove (505), and the locking head (407) can be clamped in the head groove (505).

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