Sealing structure of pit type gas furnace

Abstract

The invention relates to the field of pit type furnaces, in particular to a pit type gas furnace sealing structure which comprises a furnace cover, the furnace cover is used for sealing a pit type furnace body, the inner wall of the furnace cover is rotatably connected with a rotating disc, the top end of the furnace cover is fixedly connected with a first motor, and an output shaft of the first motor penetrates through the furnace cover and then is fixedly connected with the top end of the rotating disc; sliding grooves are formed in the bottom end of the rotating disc in an annular array mode. By arranging the scraping belt, the scraping plate and the sealing block, waste residues attached to the top end of the pit type furnace body are scraped through the scraping belt and the scraping plate, so that the top end of the pit type furnace body is kept flat, the furnace cover and the furnace opening can be tightly combined, the sealing performance in the furnace is improved, the edge of the top end of the pit type furnace body is sealed through the sealing block, and the service life of the pit type furnace body is prolonged. Meanwhile, due to the fact that the material receiving groove is formed in the bottom end of the sealing block, waste residues which are scraped by the scraping plate and fall off can be collected, and therefore the situation that the waste residues fall into the furnace, and the content of the waste residues in the furnace is increased is advantageously avoided.

Description

Technical Field

[0001] The invention relates to the field of pit-type furnaces, and in particular to a sealing structure of a pit-type gas furnace. Background Art

[0002] The pit type furnace is a periodic operation furnace, which is suitable for the heat treatment of rods and long shaft parts. The structure of the pit type furnace is that the furnace body is a cylindrical deep well, and the workpiece is vertically loaded into the furnace by a special crane for heating.

[0003] For example, the utility model patent with application number CN202323074121.4 discloses a shaft-type furnace cover rotation positioning device, including a furnace body, an adjusting mechanism is provided on the furnace body, a furnace cover is provided on the adjusting mechanism, the adjusting mechanism is used to adjust and fix the position of the furnace cover, the adjusting mechanism includes a fixed plate, a hydraulic cylinder, a movable plate, a motor, a rotating shaft and an L-shaped rod, the fixed plate is fixedly mounted on the right outer wall of the furnace body, and the hydraulic cylinder is fixedly mounted on the top of the fixed plate.

[0004] In the prior art, after the heating of the workpiece is completed, a crane is needed to lift the workpiece away from the furnace body. Due to the instability of the crane, the workpiece is prone to shaking during the lifting process, which makes the oxide waste slag on the workpiece easy to fall off. The workpiece needs to pass through the top of the furnace body when being lifted from the furnace body, which makes it easy for waste slag to accumulate on the top of the furnace body, so that the gap between the furnace cover and the furnace mouth is blocked by the waste slag, causing the furnace cover and the furnace mouth to be not closed tightly, resulting in the leakage of the atmosphere in the furnace or the entry of external air, thereby affecting the working efficiency and heat treatment quality of the pit furnace.

[0005] To this end, the present invention proposes a well-type gas furnace sealing structure to solve the above problems. Summary of the invention

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is: a well-type gas furnace sealing structure, comprising: A furnace cover, the furnace cover is used to seal the pit-type furnace body, the inner wall of the furnace cover is rotatably connected to a rotating disk, the top of the furnace cover is fixedly connected to a first motor, the output shaft of the first motor passes through the furnace cover and is fixedly connected to the top of the rotating disk, and a sliding groove is provided in a circular array at the bottom of the rotating disk; A plurality of scraping blocks, wherein the plurality of scraping blocks are slidably connected to the sliding member, and a first elastic connecting member is connected between the scraping blocks and the rotating disk; A scraping belt, the scraping belt is rotatably connected to the bottom end of the scraping block, and a scraping plate is fixedly connected to the surface array of the scraping belt; A transmission assembly, the transmission assembly is used to drive the scraper belt to rotate so that the scraper plate scrapes away the waste slag at the top port of the pit-type furnace body; A sealing block, wherein the sealing block is slidably connected to the bottom end of the scraping block, and a material receiving groove is provided on the top end of the sealing block for collecting waste residues scraped by the scraping plate; A pushing assembly, wherein the pushing assembly is used to push the sealing block to move the sealing block close to and press against the inner wall of the top end of the pit-type furnace body to seal the edge of the top end of the pit-type furnace body; Specifically, in the prior art, after the heating of the workpiece is completed, a crane is needed to lift the workpiece away from the furnace body. Due to the instability of the crane, the workpiece is prone to shaking during the process of lifting it away from the furnace body, which makes it easy for the oxide waste slag on the workpiece to fall off. The workpiece needs to pass through the top of the furnace body when being lifted off the furnace body, which makes it easy for waste slag to accumulate on the top of the furnace body, and the gap between the furnace cover and the furnace mouth is blocked by waste slag, resulting in the furnace cover and the furnace mouth not being closed tightly, causing the furnace atmosphere to leak out or external air to enter, thereby affecting the working efficiency and heat treatment quality of the pit furnace. The technical solution can solve the above problems. The specific operation is as follows: first, by starting the second motor, the L-shaped drive frame drives the furnace cover to rotate to the top of the pit furnace body, and then the cylinder is started to move the telescopic rod of the cylinder downward, so that the furnace cover moves downward, so that the scraper plate contacts the top of the pit furnace body, and is squeezed so that the scraper block drives the scraper belt and the scraper plate to move upward along the slide groove; After the scraper plate contacts the top of the pit furnace body, the first motor and the transmission assembly are started to rotate the rotating disk and the scraper belt, so that the scraper plate rotates along the top of the pit furnace body, thereby scraping off the waste slag attached to the top of the pit furnace body, so that the top of the pit furnace body remains flat, which is conducive to making the furnace cover and the furnace mouth fit tightly and improving the sealing of the furnace; In the process of the scraper block moving upward along the slide groove, the sealing block is pushed toward and pressed against the inner wall of the top of the pit-type furnace body by pushing the assembly, thereby sealing the edge of the top of the pit-type furnace body to prevent smoke from entering the furnace cover through the slide groove. At the same time, since there is a receiving groove at the bottom of the sealing block, the waste slag scraped off by the scraper plate can be collected, which is helpful to prevent the waste slag from falling into the furnace and increasing the waste slag content in the furnace.

[0007] Preferably, it also includes: A plurality of arc-shaped mounting grooves, wherein an arc-shaped array of the arc-shaped mounting grooves is provided at the bottom end of the rotating disk, and each of the arc-shaped mounting grooves is located between two slide grooves; An arc-shaped mounting seat, wherein the arc-shaped mounting seat is slidably connected in the arc-shaped mounting groove, and an arc-shaped sealing gasket is fixedly connected to the bottom of the arc-shaped mounting seat; Specifically, by providing an arc-shaped mounting seat and an arc-shaped sealing gasket, when the furnace cover moves downward, the arc-shaped sealing gasket contacts the top of the pit-type furnace body, and the contact portion is sealed by the arc-shaped sealing gasket, thereby improving the sealing performance in the furnace.

[0008] Preferably, it also includes: Two driving gears, the two driving gears are symmetrically rotatably connected to the inner wall of the slide groove; Two first racks, the two first racks are symmetrically slidably connected to the two sides of the scraper block, the first racks are meshed with the driving gears at corresponding positions, and a second elastic connecting member is connected between the first racks and the scraper block; The arc-shaped mounting seat has second racks symmetrically fixedly connected at both ends, and the second racks are meshed with driving gears at corresponding positions; Specifically, by setting a first rack, a driving gear and a second rack, when the scraper block moves upward along the slide groove, the first rack meshes with the driving gear, thereby causing the driving gear to rotate. Under the action of the meshing, the second rack moves downward, thereby applying downward pressure to the arc-shaped mounting seat, thereby increasing the contact strength between the arc-shaped sealing gasket and the pit-type furnace body, reducing the gap, making the arc-shaped sealing gasket fit tightly with the pit-type furnace body, and further improving the sealing inside the furnace.

[0009] Preferably, the transmission assembly comprises: Two transmission rollers, the two transmission rollers are symmetrically connected to the inner wall of the bottom end of the scraper block, and the scraper belts are arranged on the surfaces of the two transmission rollers; A one-way bearing, the one-way bearing being arranged on the end surface of the rotating shaft of one of the driving rollers, and the one-way bearing being rotatably connected to the outer side wall of the scraping block; A connecting rod mechanism, one end of which is rotatably connected to the rotating shaft of the transmission roller, and the other end of which is rotatably connected to a driving rod, wherein the driving rod is slidably connected to the outer side wall of the scraping block; A driving seat, the driving seat is slidably connected in the furnace cover, the bottom end of the driving seat is rotatably connected to a rotating ring, the bottom end array of the rotating ring is fixedly connected to a connecting rod, the bottom end of the connecting rod is fixedly connected to the top of the scraper block, the bottom end of the driving seat is provided with an annular wave groove, and the top end of the driving rod is slidably connected in the annular wave groove.

[0010] Preferably, the pushing assembly comprises: Two driving plates are symmetrically distributed on both sides of the sealing block, the top of the driving plate is fixedly connected to the bottom end of the rotating disk, the side wall of the driving plate is provided with a driving groove, the driving groove has an oblique groove and a straight groove, and the two sides of the sealing block are symmetrically fixedly connected with connecting pins, and the connecting pins are slidably connected in the driving groove.

[0011] Preferably, it also includes: An L-shaped mounting frame, the L-shaped mounting frame is fixedly connected to the outer side wall of the pit-type furnace body, a cylinder is fixedly connected to the top of the L-shaped mounting frame, a mounting plate is fixedly connected to the top of the telescopic rod of the cylinder, and the mounting plate is slidably connected to the side wall of the L-shaped mounting frame; The second motor is fixedly connected to the mounting plate, the top end of the output shaft of the second motor is fixedly connected to an L-shaped driving frame, and the top end of the L-shaped driving frame is fixedly connected to the top end of the furnace cover.

[0012] Preferably, the first elastic connecting member comprises: Two L-shaped brackets, the two L-shaped brackets are symmetrically fixedly connected to the top of the rotating disk, the ends of the L-shaped brackets are slidably connected to a first sliding rod, and the bottom end of the first sliding rod is fixedly connected to the top of the scraping block; A first spring, wherein two ends of the first spring are respectively fixedly connected to the L-shaped bracket and the scraping block.

[0013] Preferably, the second elastic connecting member comprises: A second sliding rod, wherein the second sliding rod is fixedly connected to the outer wall of the scraping block, and the first rack is slidably connected to the surface of the second sliding rod; The second spring has two ends fixedly connected to the scraper block and the first rack respectively.

[0014] Preferably, the scraper plate is an inclined plate.

[0015] Preferably, the arc-shaped sealing gasket is a metal sealing gasket, the interior of which is filled with an inert gas.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a scraping belt, a scraping plate and a sealing block. The scraping belt and the scraping plate are used to scrape off the waste slag attached to the top of the pit-type furnace body, so that the top of the pit-type furnace body remains flat, which is conducive to making the furnace cover and the furnace mouth fit tightly together and improving the sealing of the furnace. The sealing block is provided to seal the edge of the top of the pit-type furnace body to prevent smoke from entering the furnace cover through the slide groove. At the same time, since there is a receiving groove at the bottom end of the sealing block, the waste slag scraped off by the scraping plate can be collected, which is conducive to preventing the waste slag from falling into the furnace and increasing the waste slag content in the furnace.

[0017] 2. The present invention provides an arc-shaped mounting seat and an arc-shaped sealing gasket. When the furnace cover moves downward, the arc-shaped sealing gasket contacts the top of the pit-type furnace body, and the contact part is sealed by the arc-shaped sealing gasket, thereby improving the sealing performance in the furnace.

[0018] The present invention arranges a first rack, a driving gear and a second rack. When the scraper block moves upward along the slide groove, the first rack meshes with the driving gear, thereby causing the driving gear to rotate. Under the action of the meshing, the second rack moves downward, thereby applying downward pressure to the arc-shaped mounting seat, thereby increasing the contact strength between the arc-shaped sealing gasket and the pit-type furnace body, reducing the gap, making the arc-shaped sealing gasket fit tightly with the pit-type furnace body, and further improving the sealing inside the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional view of the pit type furnace body of the present invention; Figure 3 is a cross-sectional view of a furnace cover of the present invention; Figure 4 It is a schematic diagram of the connection between the furnace cover and the rotating disk in the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 It is a schematic diagram of the connection between the scraper block and the driving seat of the present invention; Figure 7 for Figure 6 Enlarged view of point B in the middle; Figure 8 for Figure 6 Enlarged view of point C in the middle; Fig. 9 for Figure 8 Enlarged view of point D in the middle; Fig.10 It is a schematic diagram of the connection between the driving seat and the rotating ring in the present invention; Fig.11 for Fig.10 Enlarged view of point E in the middle; Fig.12 It is a cross-sectional view of the scraping block in the present invention.

[0020] In the figure: a pit type furnace body 1, a furnace cover 2, a rotating disk 3, a first motor 4, a chute 5, a scraper block 6, a scraper belt 7, a scraper plate 8, a sealing block 9, a material receiving trough 10, an arc-shaped mounting groove 11, an arc-shaped mounting seat 12, an arc-shaped sealing gasket 13, a driving gear 14, a first rack 15, a second rack 16, a transmission roller 17, a one-way bearing 18, a first connecting rod 19, a second connecting rod 20, a driving rod 21, a driving seat 22, a rotating ring 23, a connecting rod 24, an annular wave groove 25, a driving plate 26, a driving groove 27, an L-shaped mounting frame 28, a cylinder 29, a mounting plate 30, a second motor 31, an L-shaped driving frame 32, an L-shaped bracket 33, a first slide bar 34, a first spring 35, a second slide bar 36, and a second spring 37. DETAILED DESCRIPTION

[0021] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0022] like Figures 1 to 12 A pit-type gas furnace sealing structure shown includes: The furnace cover 2 is used to seal the pit-type furnace body 1. The inner wall of the furnace cover 2 is rotatably connected to a rotating disk 3. The top of the furnace cover 2 is fixedly connected to a first motor 4. The output shaft of the first motor 4 passes through the furnace cover 2 and is fixedly connected to the top of the rotating disk 3. A sliding groove 5 is provided in an annular array at the bottom of the rotating disk 3. A plurality of scraping blocks 6 are slidably connected in the sliding member, and a first elastic connecting member is connected between the scraping blocks 6 and the rotating disk 3; A scraping belt 7 is rotatably connected to the bottom end of the scraping block 6, and a scraping plate 8 is fixedly connected to the surface array of the scraping belt 7; A transmission assembly, the transmission assembly is used to drive the scraper belt 7 to rotate, so that the scraper plate 8 scrapes away the waste slag at the top end of the pit type furnace body 1; A sealing block 9 is slidably connected to the bottom end of the scraping block 6, and a receiving groove 10 is provided on the top of the sealing block 9 for collecting waste residues scraped by the scraping plate 8; A pushing component is used to push the sealing block 9 to move the sealing block 9 close to and press against the inner wall of the top end of the pit-type furnace body 1 to seal the top edge of the pit-type furnace body 1; Also includes: An L-shaped mounting frame 28, the L-shaped mounting frame 28 is fixedly connected to the outer wall of the pit-type furnace body 1, a cylinder 29 is fixedly connected to the top of the L-shaped mounting frame 28, a mounting plate 30 is fixedly connected to the top of the telescopic rod of the cylinder 29, and the mounting plate 30 is slidably connected to the side wall of the L-shaped mounting frame 28; A second motor 31, the second motor 31 is fixedly connected to the mounting plate 30, the top end of the output shaft of the second motor 31 is fixedly connected to an L-shaped driving frame 32, and the top end of the L-shaped driving frame 32 is fixedly connected to the top end of the furnace cover 2; Specifically, in the prior art, after the heating of the workpiece is completed, a crane is needed to lift the workpiece away from the furnace body. Due to the instability of the crane, the workpiece is prone to shaking during the lifting process, which makes the oxide waste slag on the workpiece easy to fall off. The workpiece needs to pass through the top of the furnace body when being lifted off the furnace body, which makes it easy for waste slag to accumulate on the top of the furnace body, so that the gap between the furnace cover 2 and the furnace mouth is blocked by waste slag, causing the furnace cover 2 and the furnace mouth to be not closed tightly, resulting in leakage of the atmosphere in the furnace or entry of external air, thereby affecting the working efficiency and heat treatment quality of the pit furnace. The technical solution can solve the above problems. The specific operation is as follows: first, by starting the second motor 31, the L-shaped driving frame 32 drives the furnace cover 2 to rotate to the top of the pit furnace body 1, and then the cylinder 29 is started to move the telescopic rod of the cylinder 29 downward, so that the furnace cover 2 moves downward, so that the scraper plate 8 contacts with the top of the pit furnace body 1, and is squeezed so that the scraper block 6 drives the scraper belt 7 and the scraper plate 8 to move upward along the slide groove 5; After the scraper plate 8 comes into contact with the top of the pit furnace body 1, the first motor 4 and the transmission assembly are started to rotate the rotating disc 3 and the scraper belt 7, so that the scraper plate 8 rotates along the top of the pit furnace body 1, thereby scraping off the waste slag attached to the top of the pit furnace body 1, so that the top of the pit furnace body 1 remains flat, which is conducive to the complete fit of the furnace cover 2 and the furnace mouth, and improves the sealing performance of the furnace; In the process of the scraper block 6 moving upward along the slide groove 5, the sealing block 9 is pushed to approach and tighten the inner wall of the top of the pit-type furnace body 1, thereby sealing the top edge of the pit-type furnace body 1 to prevent smoke from entering the furnace cover 2 through the slide groove 5. At the same time, since there is a receiving groove 10 at the bottom end of the sealing block 9, the waste slag scraped off by the scraper plate 8 can be collected, which is beneficial to prevent the waste slag from falling into the furnace and increase the waste slag content in the furnace.

[0023] As a further embodiment of the present invention, it also includes: A plurality of arc-shaped mounting grooves 11 are arranged in an arc-shaped array at the bottom end of the rotating disk 3, and each arc-shaped mounting groove 11 is located between two slide grooves 5; An arc-shaped mounting seat 12 is slidably connected in the arc-shaped mounting groove 11, and an arc-shaped sealing gasket 13 is fixedly connected to the bottom of the arc-shaped mounting seat 12; Specifically, by providing the arc-shaped mounting seat 12 and the arc-shaped sealing gasket 13, when the furnace cover 2 moves downward, the arc-shaped sealing gasket 13 contacts the top of the pit-type furnace body 1, and the contact part is sealed by the arc-shaped sealing gasket 13, thereby improving the sealing performance in the furnace.

[0024] As a further embodiment of the present invention, it also includes: Two driving gears 14, the two driving gears 14 are symmetrically rotatably connected to the inner wall of the slide slot 5; Two first racks 15, the two first racks 15 are symmetrically slidably connected to the two sides of the scraper block 6, the first racks 15 are meshed with the driving gear 14 at the corresponding position, and a second elastic connecting member is connected between the first racks 15 and the scraper block 6; The arc-shaped mounting seat 12 is symmetrically fixedly connected to the second rack 16 at both ends, and the second rack 16 is meshed with the driving gear 14 at the corresponding position; Specifically, by providing the first rack 15, the driving gear 14 and the second rack 16, when the scraper block 6 moves upward along the slide groove 5, the first rack 15 meshes with the driving gear 14, thereby causing the driving gear 14 to rotate. Under the action of the meshing, the second rack 16 moves downward, thereby applying downward pressure to the arc-shaped mounting seat 12, thereby increasing the contact force between the arc-shaped sealing gasket 13 and the pit-type furnace body 1, reducing the gap, and making the arc-shaped sealing gasket 13 fit tightly with the pit-type furnace body 1, thereby further improving the sealing inside the furnace.

[0025] As a further embodiment of the present invention, the transmission assembly comprises: Two transmission rollers 17, the two transmission rollers 17 are symmetrically connected to the inner wall of the bottom end of the scraper block 6, and the scraper belt 7 is arranged on the surface of the two transmission rollers 17; A one-way bearing 18, which is arranged on the end surface of the rotating shaft of one of the driving rollers 17, and is rotatably connected to the outer side wall of the scraping block 6; A connecting rod mechanism, one end of which is rotatably connected to the rotating shaft of the transmission roller 17, and the other end of which is rotatably connected to a driving rod 21, and the driving rod 21 is slidably connected to the outer wall of the scraping block 6; A driving seat 22 is slidably connected in the furnace cover 2. A rotating ring 23 is rotatably connected to the bottom end of the driving seat 22. A connecting rod 24 is fixedly connected to the bottom end of the rotating ring 23. The bottom end of the connecting rod 24 is fixedly connected to the top end of the scraping block 6. An annular wave groove 25 is provided at the bottom end of the driving seat 22. The top end of the driving rod 21 is slidably connected in the annular wave groove 25. Specifically, by providing the driving seat 22 and the annular wave groove 25, when the scraping block 6 moves upward along the slide groove 5, the driving seat 22 moves upward along the inner wall of the furnace cover 2 under the connecting action of the connecting rod 24, so that the distance between the driving rod 21 and the driving seat 22 is always the same; During the rotation of the rotating disk 3, the driving rod 21 slides along the annular wave groove 25. Driven by the annular wave groove 25, the driving rod 21 moves back and forth in a straight line and pushes the connecting rod mechanism to swing. Under the action of the connecting rod mechanism, the transmission roller 17 rotates, thereby driving the scraper belt 7 to rotate, so that the scraper plate 8 scrapes the waste slag on the top of the shaft-type furnace body 1.

[0026] Furthermore, the connecting rod mechanism includes a first connecting rod 19 and a second connecting rod 20 , one end of the first connecting rod 19 is rotatably connected to the rotating shaft of the transmission roller 17 , and the other end is rotatably connected to the second connecting rod 20 , and the second connecting rod 20 is rotatably connected to the bottom end of the driving rod 21 .

[0027] As a further embodiment of the present invention, the pushing component comprises: Two driving plates 26, the two driving plates 26 are symmetrically distributed on both sides of the sealing block 9, the top of the driving plate 26 is fixedly connected to the bottom end of the rotating disk 3, the side wall of the driving plate 26 is provided with a driving groove 27, the driving groove 27 has an oblique groove and a straight groove, and the two sides of the sealing block 9 are symmetrically fixedly connected with connecting pins, and the connecting pins are slidably connected in the driving groove 27; Specifically, by setting the driving plate 26 and the driving groove 27, when the scraper block 6 moves upward along the slide groove 5, the sealing block 9 moves upward along the driving plate 26. Driven by the inclined groove, the sealing block 9 quickly approaches the inner wall of the top end of the pit type furnace body 1 and presses against the inner wall of the top end of the pit type furnace body 1 to seal the top edge of the pit type furnace body 1, and at the same time collects the waste slag scraped off by the scraper plate 8.

[0028] As a further embodiment of the present invention, the first elastic connecting member comprises: Two L-shaped brackets 33, the two L-shaped brackets 33 are symmetrically fixedly connected to the top of the rotating disk 3, the ends of the L-shaped brackets 33 are slidably connected to the first sliding rod 34, and the bottom end of the first sliding rod 34 is fixedly connected to the top of the scraping block 6; A first spring 35, two ends of which are fixedly connected to the L-shaped bracket 33 and the scraper block 6 respectively; Specifically, by setting the first spring 35, in the process of the scraper plate 8 contacting and squeezing the top of the pit-type furnace body 1, the scraper block 6 moves upward under the pressure, so that the first spring 35 generates elastic force, thereby increasing the contact force between the scraper plate 8 and the top of the pit-type furnace body 1, thereby improving the slag removal effect.

[0029] As a further embodiment of the present invention, the second elastic connecting member comprises: A second slide bar 36, the second slide bar 36 is fixedly connected to the outer wall of the scraper block 6, and the first rack 15 is slidably connected to the surface of the second slide bar 36; A second spring 37, two ends of which are fixedly connected to the scraper block 6 and the first rack 15 respectively; Specifically, by providing the second spring 37 , the first rack 15 is elastically released to avoid the first rack 15 from getting stuck.

[0030] Furthermore, the scraping plate 8 is an inclined plate, which is conducive to scraping off the waste slag on the top of the pit-type furnace body 1 and pushing it into the furnace, thereby improving the slag removal effect.

[0031] Furthermore, the arc-shaped sealing gasket 13 is a metal sealing gasket, which is filled with an inert gas to prevent the arc-shaped sealing gasket 13 from being damaged by high temperature.

[0032] The working principle of the present invention is as follows: first, the second motor 31 is started to make the L-shaped driving frame 32 drive the furnace cover 2 to rotate to the top of the pit-type furnace body 1, and then the cylinder 29 is started to make the telescopic rod of the cylinder 29 move downward, so that the furnace cover 2 moves downward, and the scraper plate 8 contacts the top of the pit-type furnace body 1, and is squeezed, so that the scraper block 6 drives the scraper belt 7 and the scraper plate 8 to move upward along the slide groove 5; After the scraper plate 8 comes into contact with the top of the pit furnace body 1, the first motor 4 and the transmission assembly are started to rotate the rotating disc 3 and the scraper belt 7, so that the scraper plate 8 rotates along the top of the pit furnace body 1, thereby scraping off the waste slag attached to the top of the pit furnace body 1, so that the top of the pit furnace body 1 remains flat, which is conducive to making the furnace cover 2 and the furnace mouth fit tightly and improving the sealing performance in the furnace; In the process of the scraper block 6 moving upward along the slide groove 5, the sealing block 9 is pushed to approach and tighten the inner wall of the top of the pit-type furnace body 1, thereby sealing the top edge of the pit-type furnace body 1 to prevent smoke from entering the furnace cover 2 through the slide groove 5. At the same time, since there is a receiving groove 10 at the bottom end of the sealing block 9, the waste slag scraped off by the scraper plate 8 can be collected, which is beneficial to prevent the waste slag from falling into the furnace and increasing the waste slag content in the furnace.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A well-type gas furnace sealing structure, characterized in that: include: A furnace cover (2), the furnace cover (2) being used to seal the pit-type furnace body (1), the inner wall of the furnace cover (2) being rotatably connected to a rotating disk (3), the top of the furnace cover (2) being fixedly connected to a first motor (4), the output shaft of the first motor (4) passing through the furnace cover (2) and then being fixedly connected to the top of the rotating disk (3), and a slide groove (5) being provided in an annular array at the bottom of the rotating disk (3); A plurality of scraping blocks (6), wherein the plurality of scraping blocks (6) are slidably connected in the sliding member, and a first elastic connecting member is connected between the scraping blocks (6) and the rotating disk (3); A scraping belt (7), the scraping belt (7) being rotatably connected to the bottom end of the scraping block (6), and a scraping plate (8) being fixedly connected to an array on the surface of the scraping belt (7); A transmission assembly, the transmission assembly being used to drive the scraper belt (7) to rotate so that the scraper plate (8) scrapes away the waste slag at the top port of the pit-type furnace body (1); A sealing block (9), wherein the sealing block (9) is slidably connected to the bottom end of the scraping block (6), and a material receiving groove (10) is provided at the top end of the sealing block (9) for collecting waste residues scraped by the scraping plate (8); A pushing assembly, wherein the pushing assembly is used to push the sealing block (9) so as to move the sealing block (9) closer to and press against the inner wall of the top end of the pit-type furnace body (1) so as to seal the edge of the top end of the pit-type furnace body (1).

2. A well-type gas furnace sealing structure according to claim 1, characterized in that: Also includes: A plurality of arc-shaped mounting grooves (11), wherein the arc-shaped mounting grooves (11) are arranged in an arc-shaped array at the bottom end of the rotating disk (3), and each of the arc-shaped mounting grooves (11) is located between two slide grooves (5); An arc-shaped mounting seat (12), wherein the arc-shaped mounting seat (12) is slidably connected in the arc-shaped mounting groove (11), and an arc-shaped sealing gasket (13) is fixedly connected to the bottom of the arc-shaped mounting seat (12).

3. A well-type gas furnace sealing structure according to claim 2, characterized in that: Also includes: Two driving gears (14), the two driving gears (14) being symmetrically rotatably connected to the inner wall of the slide groove (5); Two first racks (15), the two first racks (15) are symmetrically slidably connected to the two sides of the scraper block (6), the first racks (15) are meshed with the driving gears (14) at corresponding positions, and a second elastic connecting member is connected between the first racks (15) and the scraper block (6); The arc-shaped mounting seat (12) has second racks (16) symmetrically fixedly connected to both ends thereof, and the second racks (16) are meshed with the driving gears (14) at corresponding positions.

4. A well-type gas furnace sealing structure according to claim 1, characterized in that: The transmission assembly comprises: Two transmission rollers (17), the two transmission rollers (17) are symmetrically rotatably connected to the inner wall of the bottom end of the scraper block (6), and the scraper belt (7) is arranged on the surface of the two transmission rollers (17); a one-way bearing (18), the one-way bearing (18) being arranged on the end surface of the rotating shaft of one of the driving rollers (17), the one-way bearing (18) being rotatably connected to the outer side wall of the scraping block (6); a connecting rod mechanism, one end of which is rotatably connected to the rotating shaft of the transmission roller (17), and the other end of which is rotatably connected to a driving rod (21), wherein the driving rod (21) is slidably connected to the outer wall of the scraping block (6); A driving seat (22), wherein the driving seat (22) is slidably connected in the furnace cover (2), the bottom end of the driving seat (22) is rotatably connected to a rotating ring (23), the bottom end of the rotating ring (23) is fixedly connected to a connecting rod (24), the bottom end of the connecting rod (24) is fixedly connected to the top end of the scraper block (6), the bottom end of the driving seat (22) is provided with an annular wave groove (25), and the top end of the driving rod (21) is slidably connected in the annular wave groove (25).

5. A well-type gas furnace sealing structure according to claim 1, characterized in that: The pushing component comprises: Two drive plates (26), the two drive plates (26) are symmetrically distributed on both sides of the sealing block (9), the top of the drive plate (26) is fixedly connected to the bottom of the rotating disk (3), the side wall of the drive plate (26) is provided with a drive groove (27), the drive groove (27) has an oblique groove and a straight groove, and the two sides of the sealing block (9) are symmetrically fixedly connected with connecting pins, and the connecting pins are slidably connected in the drive groove (27).

6. A well-type gas furnace sealing structure according to claim 1, characterized in that: Also includes: An L-shaped mounting frame (28), the L-shaped mounting frame (28) being fixedly connected to the outer side wall of the pit-type furnace body (1), a cylinder (29) being fixedly connected to the top of the L-shaped mounting frame (28), a mounting plate (30) being fixedly connected to the top of the telescopic rod of the cylinder (29), and the mounting plate (30) being slidably connected to the side wall of the L-shaped mounting frame (28); A second motor (31), the second motor (31) is fixedly connected to the mounting plate (30), the top end of the output shaft of the second motor (31) is fixedly connected to an L-shaped drive frame (32), and the top end of the L-shaped drive frame (32) is fixedly connected to the top end of the furnace cover (2).

7. A well-type gas furnace sealing structure according to claim 1, characterized in that: The first elastic connecting member comprises: Two L-shaped brackets (33), the two L-shaped brackets (33) are symmetrically fixedly connected to the top of the rotating disk (3), the ends of the L-shaped brackets (33) are slidably connected to a first sliding rod (34), and the bottom end of the first sliding rod (34) is fixedly connected to the top of the scraping block (6); A first spring (35), wherein two ends of the first spring (35) are respectively fixedly connected to the L-shaped bracket (33) and the scraping block (6).

8. A well-type gas furnace sealing structure according to claim 3, characterized in that: The second elastic connecting member comprises: a second sliding rod (36), the second sliding rod (36) being fixedly connected to the outer wall of the scraping block (6), the first rack (15) being slidably connected to the surface of the second sliding rod (36); A second spring (37), wherein two ends of the second spring (37) are respectively fixedly connected to the scraper block (6) and the first rack (15).

9. A well-type gas furnace sealing structure according to claim 1, characterized in that: The scraper plate (8) is an inclined plate.

10. A well-type gas furnace sealing structure according to claim 2, characterized in that: The arc-shaped sealing gasket (13) is a metal sealing gasket, the interior of which is filled with an inert gas.

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