Furnace gas utilization device for recycling heat energy of calcium carbide furnace gas and recycling method

Abstract

The furnace gas utilization device comprises a calcium carbide furnace main body, a flow guide pipe and a return pipe are connected to the side wall of the calcium carbide furnace main body, the other end of the flow guide pipe and the other end of the return pipe are connected to a heat energy recovery box, a filter screen is connected into an inner cavity of the heat energy recovery box, and the inner cavity of the heat energy recovery box is internally provided with a gas inlet and a gas outlet. A filter screen cleaning structure is connected to the position, located on the end face of a filter screen, in an inner cavity of the heat energy recycling box, and a backflow preventing structure is arranged in the furnace gas utilization device for calcium carbide furnace gas heat energy recycling, so that a backflow baffle can be automatically opened and closed through an electric telescopic rod in the backflow preventing structure via a transmission structure; according to the technical scheme, the corresponding backflow baffles can be rapidly opened or closed according to use requirements, furnace gas can enter the calcium carbide furnace body according to corresponding pipelines, then backflow of the furnace gas is prevented, and therefore the problem that backflow of the furnace gas cannot be prevented is solved.

Description

Technical Field

[0001] The invention relates to the technical field of heat energy recovery of calcium carbide furnace gas, and in particular to a furnace gas utilization device and a recovery method for heat energy recovery of calcium carbide furnace gas. Background Art

[0002] The furnace gas utilization device for recovering heat energy of calcium carbide furnace gas can be used for heating water, and can recover heat energy of calcium carbide furnace gas for use in life and industry.

[0003] The composition of calcium carbide furnace gas is relatively complex. The main component is CO, which is toxic and flammable. In addition, calcium carbide furnace gas contains impurities such as sulfur, phosphorus, cyanide, tar, and a large amount of smoke and dust. In order to comprehensively utilize the furnace gas, To solve the problem of purifying calcium carbide furnace gas, we must first remove the dust and a small amount of tar in the furnace gas. Due to the high temperature of the furnace gas, the dust particle size is equivalent to the smoke grade, and it contains tar, which brings difficulties to the purification of the furnace gas.

[0004] After long-term use, the current furnace gas utilization device for recovering heat energy from calcium carbide furnace gas will have blockage on its filter screen, resulting in a decrease in the calcium carbide furnace gas recovery efficiency, and will also cause reflux of furnace gas, resulting in heat energy loss. However, when cleaning the traditional filter screen, the calcium carbide furnace needs to stop running, and then the filter screen must be cleaned or replaced manually, which makes the device inconvenient to use. At the same time, after long-term use, crystals will appear on the walls of the heat exchange tubes, resulting in poor thermal conductivity of the heat exchange tubes. However, when crystals appear on the walls of traditional heat exchange tubes, they need to be removed manually, which makes the device inconvenient to use. The traditional furnace gas utilization device for recovering heat energy from calcium carbide furnace gas does not have a reflux baffle in its pipeline, which prevents the furnace gas from entering the calcium carbide furnace body through the corresponding pipeline. At the same time, the furnace gas will reflux, resulting in heat energy loss. Summary of the invention

[0005] In order to solve the problem that when cleaning the filter, the calcium carbide furnace needs to be stopped and the filter needs to be cleaned or replaced manually, which makes the device inconvenient to use; when crystals appear on the wall of the traditional heat exchange tube, they need to be removed manually, which makes the device inconvenient to use; in the traditional furnace gas utilization device for recovering the heat energy of calcium carbide furnace gas, there is no reflux baffle designed in the pipeline, and the furnace gas will reflux, resulting in the loss of heat energy. The present invention provides a furnace gas utilization device for recovering the heat energy of calcium carbide furnace gas to solve the above-mentioned problem.

[0006] To achieve the above object, the present invention provides the following technical solutions: A furnace gas utilization device for recovering heat energy of calcium carbide furnace gas, comprising a calcium carbide furnace body, a guide pipe and a return pipe connected to the side wall of the calcium carbide furnace body, the other ends of the guide pipe and the return pipe are respectively connected to a heat recovery box, a filter screen is connected to the inner cavity of the heat recovery box, a filter screen cleaning structure is connected to the inner cavity of the heat recovery box and located on the end surface of the filter screen, a plurality of groups of heat exchange tubes are connected to the inner cavity of the heat recovery box and located below the filter screen, a tube wall cleaning structure is connected to the side wall of the heat exchange tube, an anti-backflow structure is connected to the inner cavity of the guide pipe and the return pipe, a fixed bracket is connected to the bottom of the heat recovery box, a controller is connected to the side wall of the fixed bracket, and a heat insulation board is arranged on the side wall of the inner cavity of the heat recovery box; The filter cleaning structure includes a connecting bracket, which is connected to the inner cavity of the heat recovery box. A driving motor is connected to the side wall of the connecting bracket through a connecting plate. The driving end of the driving motor is connected to a hexagonal rotating rod through a coupling. The side wall of the hexagonal rotating rod is meshed with a driven bevel gear through a driving bevel gear. The center of the driven bevel gear is connected to the driving rod. The other end of the driving rod is meshed with a transmission bevel gear through a rotating bevel gear. The center of the transmission bevel gear is connected to a rotating screw rod. The side wall of the rotating screw rod is symmetrically connected with a movable A slider, a movable sleeve is symmetrically connected to the side wall of the hexagonal rotating rod, a fixed box is connected to the side wall of the movable sleeve, the movable box is connected to the side wall of the movable slider and the fixed box and the crossbeam located on the connecting bracket, a driving helical gear is connected to the side wall of the movable sleeve and located in the inner cavity of the fixed box, a driven helical gear is meshed and connected to the side wall of the driving helical gear, a rotating rod is connected at the center of the driven helical gear and located on the side wall of the movable box, and a cleaning roller is connected to the side wall of the rotating rod and located above the filter screen; The tube wall cleaning structure comprises two groups of fixed shells, the two groups of fixed shells are connected in the inner cavity of the heat recovery box and are located on both sides of the heat exchange tube, the side walls of the two groups of fixed shells are connected with a rotating motor through a connecting box, the driving end of the rotating motor is connected with a driving rotating rod through a coupling, the side wall of the driving rotating rod and is located in the inner cavity of the fixed shell is connected with a driving gear, the side wall of the driving gear is meshed with a driven gear through a belt rack, and the center of the driven gear is connected with a driven rotating rod, and limited slide rails are arranged on the upper and lower end surfaces of the fixed shell, the limited slide rails are connected with a movable connecting plate, the side wall of the belt rack is connected with a driving lever through a connecting plate, the side wall of the movable connecting plate and corresponding to the driving lever are provided with a connecting slide groove, and the side wall of the movable connecting plate and located on the side wall of the heat exchange tube are connected with a cleaning scraper; The anti-backflow structure includes a fixed pipe, the fixed pipe is connected to the guide pipe and the return pipe, a fan is connected in the inner cavity of the fixed pipe, an electric telescopic rod is connected to the side wall of the fixed pipe through a connecting seat, a driving end of the electric telescopic rod is connected to a driving rack, a fixed slide rail is connected to the side wall of the driving rack, the fixed slide rail is connected to the side wall of the fixed pipe, a rotating gear is meshed and connected on the side wall of the driving rack, a rotating connecting rod is connected at the center of the rotating gear and located in the inner cavity of the fixed pipe, a connecting gear is connected on the side wall of the rotating connecting rod and located below the fixed pipe, a connecting gear is meshed and connected on the side wall of the connecting gear, a driven connecting rod is connected at the center of the connecting gear and located in the inner cavity of the fixed pipe, and a backflow baffle is symmetrically connected on the side walls of the rotating connecting rod and the driven connecting rod and located in the inner cavity of the fixed pipe.

[0007] As a preferred solution of the present invention, the other end of the guide pipe is connected to the end face of the heat recovery box, and the return pipe includes a dust return pipe and a waste gas return pipe, wherein one end of the dust return pipe is connected to the end face of the heat recovery box, and one end of the waste gas return pipe is connected to the bottom of the heat recovery box, and the other ends of the dust return pipe and the waste gas return pipe are connected to the side wall of the calcium carbide furnace body through the return main pipe, and the dust return pipe and the waste gas return pipe are both provided with anti-backflow structures.

[0008] As a preferred solution of the present invention, the driving motor is connected to the controller through a wire and the connection method is electrical connection, the hexagonal rotating rod is connected to the side wall of the connecting bracket through a bearing seat, wherein the connection method of the hexagonal rotating rod and the bearing seat is a rotational connection, and the driving rod is connected to the side wall of the connecting bracket through the bearing seat, wherein the connection method of the driving rod and the bearing seat is a rotational connection.

[0009] As a preferred solution of the present invention, the rotating screw is connected to the side wall of the connecting bracket through a bearing seat, wherein the rotating screw and the bearing seat are connected in a rotating manner, the rotating screw is composed of a section of left-handed screw and a section of right-handed screw, and the rotating screw is connected to the movable slider in a threaded manner.

[0010] As a preferred solution of the present invention, the cross-section of the hexagonal rotating rod is a hexagonal structure, a connecting hole is provided at the center of the movable sleeve and corresponds to the hexagonal rotating rod, wherein the hexagonal rotating rod and the connecting hole are connected in a sliding manner, and a connecting hole is provided on the movable box and corresponds to the crossbeam of the connecting bracket, wherein the crossbeam of the connecting bracket and the connecting hole are connected in a sliding manner.

[0011] As a preferred solution of the present invention, the rotating rod is connected to the side wall of the movable box through a bearing seat, wherein the rotating rod and the bearing seat are connected in a rotational manner, the rotating motor is connected to the controller through a wire and the connection is electrically connected, and the driving rotating rod is connected to the side wall of the fixed shell through a bearing seat, wherein the driving rotating rod and the bearing seat are connected in a rotational manner.

[0012] As a preferred solution of the present invention, the driven rotating rod is connected to the side wall of the fixed shell through a bearing seat, wherein the connection mode of the driven rotating rod and the bearing seat is a rotational connection, and a sliding groove is provided on the movable connecting plate and corresponds to the limiting slide rail, wherein the connection mode of the limiting slide rail and the sliding groove is a sliding connection.

[0013] As a preferred solution of the present invention, the driving lever and the connecting slide groove are matched in a clearance fit, the fan is connected to the controller via a wire and the connection is electrically connected, the electric telescopic rod is connected to the controller via a wire and the connection is electrically connected, and a slide groove is provided on the fixed slide rail corresponding to the driving rack, wherein the connection between the driving rack and the slide groove is a sliding connection.

[0014] As a preferred solution of the present invention, the rotating connecting rod is connected to the side wall of the fixed pipe through a bearing seat, wherein the rotating connecting rod and the bearing seat are connected in a rotating manner, and the driven connecting rod is connected to the side wall of the fixed pipe through a bearing seat, wherein the driven connecting rod and the bearing seat are connected in a rotating manner.

[0015] A method for recovering heat energy from calcium carbide furnace gas, the specific steps are as follows: Step 1: Control the operation of the fan and the electric telescopic rod through the controller. When the driving end of the electric telescopic rod moves forward, it drives the driving rack to move forward. When the driving rack moves forward, it drives the rotating gear, the rotating connecting rod, the connecting gear, the connecting gear, the driven connecting rod and the reflux baffle to rotate in sequence, so that the reflux baffle is opened, so that the furnace gas is poured into the heat recovery box by the fan; Step 2: The furnace gas passes through the filter screen and enters the inner cavity of the heat recovery box. A plurality of heat exchange tubes are connected below the filter screen, thereby heating the water in the heat exchange tubes. Step 3: Open the backflow baffle on the backflow prevention structure on the backflow pipe of the exhaust gas through the controller, so that the furnace gas flows back into the main body of the calcium carbide furnace; Step 4: Control the driving motor through the controller. When the driving end of the driving motor rotates, it drives the hexagonal rotating rod, driving bevel gear, driven bevel gear, driving rod, rotating bevel gear, transmission bevel gear and rotating screw in sequence. When the rotating screw rotates, it drives the moving slider, moving sleeve, moving box and two sets of cleaning rollers to move along the crossbeam connecting the bracket in relative or opposite directions. At the same time, the hexagonal rotating rod drives the moving sleeve, driving bevel gear, driven bevel gear, rotating rod and cleaning roller to rotate, thereby cleaning the filter. At this time, the reflux baffle on the anti-reflux structure on the exhaust gas reflux pipe is closed, and the reflux baffle on the anti-reflux structure on the dust reflux pipe is opened, so that the exhaust gas and dust are introduced into the main body of the calcium carbide furnace for combustion again. Compared with the prior art, the present invention has the following beneficial effects: In the present invention, a filter cleaning structure is provided in a furnace gas utilization device for recovering heat energy of calcium carbide furnace gas, so that the filter is cleaned by utilizing a driving motor in the filter cleaning structure through a transmission structure, so that during the use of the furnace gas utilization device for recovering heat energy of calcium carbide furnace gas, the cleaning roller can rotate while moving, which is beneficial to the cleaning of the filter surface, making the device more convenient during use and improving the cleaning efficiency, thereby solving the problem that the cleaning roller cannot rotate while moving.

[0016] In the present invention, a tube wall cleaning structure is provided in a furnace gas utilization device for recovering heat energy of calcium carbide furnace gas, so that the tube wall of the heat exchange tube is cleaned by utilizing a rotating motor in the tube wall cleaning structure through a transmission structure, so that during use of the furnace gas utilization device for recovering heat energy of calcium carbide furnace gas, a cleaning scraper can be moved back and forth on the tube wall of the heat exchange tube, thereby effectively cleaning the tube wall of the heat exchange tube, thereby improving the utilization rate of thermal energy, thereby solving the problem that the cleaning scraper cannot be moved back and forth on the tube wall of the heat exchange tube.

[0017] In the present invention, by providing an anti-backflow structure in a furnace gas utilization device for recovering heat energy of calcium carbide furnace gas, the electric telescopic rod in the anti-backflow structure is utilized to automatically open and close the backflow baffle through a transmission structure, so that during use of the furnace gas utilization device for recovering heat energy of calcium carbide furnace gas, the corresponding backflow baffle can be quickly opened or closed according to the needs of use, so that the furnace gas can enter the calcium carbide furnace body through the corresponding pipeline, thereby preventing the backflow of the furnace gas and causing the loss of heat energy, thereby solving the problem of being unable to prevent the backflow of the furnace gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the positive side structure of the present invention; Figure 2 For the present invention Figure 1 A schematic cross-sectional structure diagram of ; Figure 3 It is a structural schematic diagram of the filter cleaning structure of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of some structures; Figure 5 It is a structural schematic diagram of the pipe wall cleaning structure of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of some structures; Figure 7 For the present invention Figure 6 Schematic diagram of some structures; Figure 8 It is a structural schematic diagram of the backflow prevention structure of the present invention; Fig. 9 For the present invention Figure 8 Schematic diagram of part of the structure.

[0019] In the figure: 1. calcium carbide furnace body; 2. guide pipe; 3. return pipe; 4. heat recovery box; 5. filter screen; 6. filter screen cleaning structure; 7. heat exchange tube; 8. tube wall cleaning structure; 9. anti-backflow structure; 10. fixed bracket; 11. controller; 12. heat insulation board; 601. connecting bracket; 602. driving motor; 603. hexagonal rotating rod; 604. driving bevel gear; 605. driven bevel gear; 606. driving rod; 607. rotating bevel gear; 608. transmission bevel gear; 609. rotating screw; 610. moving slider; 611. moving sleeve; 612. fixed box; 613. moving box; 614. driving bevel gear; 615. driven bevel gear Moving bevel gear; 616, rotating rod; 617, cleaning roller; 801, fixed shell; 802, rotating motor; 803, driving rotating rod; 804, driving gear; 805, belt rack; 806, driven gear; 807, driven rotating rod; 808, limiting slide rail; 809, moving connecting plate; 810, driving lever; 811, connecting slide groove; 812, cleaning scraper; 901, fixed pipe; 902, fan; 903, electric telescopic rod; 904, driving rack; 905, fixed slide rail; 906, rotating gear; 907, rotating connecting rod; 908, connecting gear; 909, connecting gear; 910, driven connecting rod; 911, reflux baffle. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] For example, please refer to Figure 1-9 , the present invention provides a technical solution: A furnace gas utilization device for recovering heat energy of calcium carbide furnace gas comprises a calcium carbide furnace body 1, a guide pipe 2 and a return pipe 3 are connected to the side wall of the calcium carbide furnace body 1, the other ends of the guide pipe 2 and the return pipe 3 are respectively connected to a heat recovery box 4, a filter screen 5 is connected to the inner cavity of the heat recovery box 4, a filter screen cleaning structure 6 is connected to the inner cavity of the heat recovery box 4 and located on the end face of the filter screen 5, a plurality of groups of heat exchange tubes 7 are connected to the inner cavity of the heat recovery box 4 and located below the filter screen 5, a tube wall cleaning structure 8 is connected to the side wall of the heat exchange tube 7, an anti-backflow structure 9 is connected to the inner cavity of the guide pipe 2 and the return pipe 3, a fixed bracket 10 is connected to the bottom of the heat recovery box 4, a controller 11 is connected to the side wall of the fixed bracket 10, and a heat insulation board 12 is arranged on the side wall of the inner cavity of the heat recovery box 4.

[0022] The other end of the guide pipe 2 is connected to the end face of the heat recovery box 4, and the return pipe 3 includes a dust return pipe and a waste gas return pipe, wherein one end of the dust return pipe is connected to the end face of the heat recovery box 4, and one end of the waste gas return pipe is connected to the bottom of the heat recovery box 4, and the other ends of the dust return pipe and the waste gas return pipe are connected to the side wall of the calcium carbide furnace body 1 through the return main pipe, and the dust return pipe and the waste gas return pipe are both provided with anti-backflow structure 9, which makes the device more convenient when in use.

[0023] In this embodiment, reference Figure 1 , Figure 2 , Figure 3 and Figure 4The filter cleaning structure 6 includes a connecting bracket 601, which is connected to the inner cavity of the heat recovery box 4. A driving motor 602 is connected to the side wall of the connecting bracket 601 through a connecting plate. The driving end of the driving motor 602 is connected to a hexagonal rotating rod 603 through a coupling. A driven bevel gear 605 is meshed and connected to the side wall of the hexagonal rotating rod 603 through a driving bevel gear 604. The center of the driven bevel gear 605 is connected to a driving rod 606. The other end of the driving rod 606 is meshed and connected to a transmission bevel gear 608 through a rotating bevel gear 607. A rotating screw 609 is connected to the center of the transmission bevel gear 608. The side wall of the rotating screw 609 is symmetrically connected to a moving slider 61. 0, a movable sleeve 611 is symmetrically connected to the side wall of the hexagonal rotating rod 603, a fixed box 612 is connected to the side wall of the movable sleeve 611, a movable box 613 is connected to the side walls of the movable slider 610 and the fixed box 612 and located on the crossbeam of the connecting bracket 601, a driving bevel gear 614 is connected to the side wall of the movable sleeve 611 and located in the inner cavity of the fixed box 612, a driven bevel gear 615 is meshedly connected to the side wall of the driving bevel gear 614, a rotating rod 616 is connected at the center of the driven bevel gear 615 and located on the side wall of the movable box 613, and a cleaning roller 617 is connected to the side wall of the rotating rod 616 and located above the filter screen 5.

[0024] Based on the above structure and the connection relationship of the above structure, the driving motor 602 is controlled by the controller 11. When the driving end of the driving motor 602 rotates, it drives the hexagonal rotating rod 603, the driving bevel gear 604, the driven bevel gear 605, the driving rod 606, the rotating bevel gear 607, the transmission bevel gear 608 and the rotating screw 609 in sequence. When the rotating screw 609 rotates, it drives the moving slider 610, the moving sleeve 611, the moving box 613 and the two groups of cleaning rollers 617 to move along the crossbeam of the connecting bracket 601 in relative or opposite directions. At the same time, the hexagonal rotating rod 603 drives the moving sleeve 611 to rotate, the driving bevel gear 614, the driven bevel gear 615, the rotating rod 616 and the cleaning roller 617 to rotate, thereby cleaning the filter 5.

[0025] The driving motor 602 is connected to the controller 11 through a wire and the connection method is electrical connection, and the operation of the driving motor 602 is controlled by the controller 11; the hexagonal rotating rod 603 is connected to the side wall of the connecting bracket 601 through a bearing seat, wherein the connection method of the hexagonal rotating rod 603 and the bearing seat is a rotational connection, the driving rod 606 is connected to the side wall of the connecting bracket 601 through the bearing seat, wherein the connection method of the driving rod 606 and the bearing seat is a rotational connection, the rotating screw 609 is connected to the side wall of the connecting bracket 601 through the bearing seat, wherein the connection method of the rotating screw 609 and the bearing seat is a rotational connection, the rotating screw 609 is spliced ​​by a section of left-handed screw and a section of right-handed screw, and the rotating screw The connection between the rod 609 and the movable slider 610 is a threaded connection, the cross-section of the hexagonal rotating rod 603 is a hexagonal structure, a connecting hole is provided at the center of the movable sleeve 611 and corresponds to the hexagonal rotating rod 603, wherein the connection between the hexagonal rotating rod 603 and the connecting hole is a sliding connection, a connecting hole is provided on the movable box 613 and corresponds to the crossbeam of the connecting bracket 601, wherein the connection between the crossbeam of the connecting bracket 601 and the connecting hole is a sliding connection, and it is characterized in that: the rotating rod 616 is connected to the side wall of the movable box 613 through a bearing seat, wherein the connection between the rotating rod 616 and the bearing seat is a rotating connection, so that the filter cleaning structure 6 can run more smoothly when in use.

[0026] In this embodiment, reference Figure 1 , Figure 5 , Figure 6 and Figure 7 The tube wall cleaning structure 8 includes two groups of fixed shells 801, which are connected to the inner cavity of the heat recovery box 4 and are located on both sides of the heat exchange tube 7. The side walls of the two groups of fixed shells 801 are connected to a rotating motor 802 through a connecting box. The driving end of the rotating motor 802 is connected to a driving rod 803 through a coupling. The side wall of the driving rod 803 and the inner cavity of the fixed shell 801 are connected to a driving gear 804. The side wall of the driving gear 804 is meshed with a belt rack 805. It is connected to a driven gear 806, and a driven rotating rod 807 is connected to the center of the driven gear 806. Limiting slide rails 808 are arranged on the upper and lower end surfaces of the fixed shell 801. A movable connecting plate 809 is connected to the limiting slide rail 808. A driving lever 810 is connected to the side wall of the belt rack 805 through a connecting plate. A connecting groove 811 is provided on the side wall of the movable connecting plate 809 and corresponds to the driving lever 810. A cleaning scraper 812 is connected to the side wall of the movable connecting plate 809 and on the side wall of the heat exchange tube 7.

[0027] Based on the above structure and the connection relationship of the above structure, the rotating motor 802 is controlled by the controller 11. When the driving end of the rotating motor 802 rotates, it drives the driving rod 803, the driving gear 804, the belt rack 805, the driven gear 806 and the driven rod 807 to rotate in sequence. When the belt rack 805 rotates, it drives the movable connecting plate 809 to reciprocate on the side wall of the fixed shell 801, and then drives the cleaning scraper 812 to reciprocate on the tube wall of the heat exchange tube 7, thereby removing the crystals on the tube wall of the heat exchange tube 7.

[0028] The rotating motor 802 is connected to the controller 11 through a wire and the connection method is electrical connection, and the operation of the rotating motor 802 is controlled by the controller 11; the driving rod 803 is connected to the side wall of the fixed shell 801 through a bearing seat, wherein the driving rod 803 is connected to the bearing seat in a rotational connection, and the driven rod 807 is connected to the side wall of the fixed shell 801 through a bearing seat, wherein the driven rod 807 is connected to the bearing seat in a rotational connection, and a slide groove is provided on the movable connecting plate 809 corresponding to the limiting slide rail 808, wherein the limiting slide rail 808 is connected to the slide groove in a sliding connection, and the driving lever 810 and the connecting slide groove 811 are matched in a clearance match, so that the pipe wall cleaning structure 8 can operate smoothly when in use.

[0029] In this embodiment, reference Figure 1 , Figure 2 , Figure 8 and Fig. 9 The backflow prevention structure 9 includes a fixed pipe 901, which is connected to the guide pipe 2 and the backflow pipe 3. A fan 902 is connected to the inner cavity of the fixed pipe 901. An electric telescopic rod 903 is connected to the side wall of the fixed pipe 901 through a connecting seat. The driving end of the electric telescopic rod 903 is connected to a driving rack 904. A fixed slide rail 905 is connected to the side wall of the driving rack 904. The fixed slide rail 905 is connected to the side wall of the fixed pipe 901. A rotating gear 906 is meshed and connected to the side wall of the driving rack 904. A rotating connecting rod 907 is connected at the center of the gear 906 and located in the inner cavity of the fixed pipe 901, a connecting gear 908 is connected on the side wall of the rotating connecting rod 907 and located below the fixed pipe 901, a connecting gear 909 is meshingly connected on the side wall of the connecting gear 908, a driven connecting rod 910 is connected at the center of the connecting gear 909 and located in the inner cavity of the fixed pipe 901, and a reflux baffle 911 is symmetrically connected on the side walls of the rotating connecting rod 907 and the driven connecting rod 910 and located in the inner cavity of the fixed pipe 901.

[0030] Based on the above structure and the connection relationship of the above structure, the operation of the fan 902 and the electric telescopic rod 903 is controlled by the controller 11. When the driving end of the electric telescopic rod 903 moves forward, it drives the driving rack 904 to move forward. When the driving rack 904 moves forward, it drives the rotating gear 906, the rotating connecting rod 907, the connecting gear 908, the connecting gear 909, the driven connecting rod 910 and the reflux baffle 911 to rotate in sequence, so that the reflux baffle 911 is opened.

[0031] The fan 902 is connected to the controller 11 through a wire and the connection method is electrical connection. The electric telescopic rod 903 is connected to the controller 11 through a wire and the connection method is electrical connection. The operation of the fan 902 and the electric telescopic rod 903 is controlled by the controller 11. A slide groove is provided on the fixed slide rail 905 and corresponds to the driving rack 904, wherein the driving rack 904 is connected to the slide groove in a sliding manner. The rotating connecting rod 907 is connected to the side wall of the fixed pipe 901 through a bearing seat, wherein the rotating connecting rod 907 is connected to the bearing seat in a rotating manner. The driven connecting rod 910 is connected to the side wall of the fixed pipe 901 through a bearing seat, wherein the driven connecting rod 910 is connected to the bearing seat in a rotating manner, so that the anti-backflow structure 9 can operate smoothly when in use.

[0032] When using the furnace gas utilization device for recovering heat energy of calcium carbide furnace gas, firstly, connect the device to the power supply so that the device is in working state, then connect the water source to the heat exchange tube 7, and start the fan 902 and the electric telescopic rod 903 under the condition that the fan 902 is connected to the controller 11 through a wire and the connection method is electrical connection, and the electric telescopic rod 903 is connected to the controller 11 through a wire and the connection method is electrical connection, so that the driving end of the electric telescopic rod 903 moves forward, and a slide groove is provided on the fixed slide rail 905 and corresponds to the driving rack 904, wherein the driving rack 904 is driven to move forward under the condition that the connection method between the driving rack 904 and the slide groove is a sliding connection, and the rotating gear 906 is driven to rotate under the condition that the rotating gear 906 is meshed and connected to the side wall of the driving rack 904, and the rotating connecting rod 907 is connected to the fixed pipe 901 through the bearing seat. On the side wall, the rotating connecting rod 907 is connected to the bearing seat in a rotating connection manner, which drives the rotating connecting rod 907 to rotate. A connecting gear 908 is connected on the side wall of the rotating connecting rod 907 and is located below the fixed pipe 901. The connecting gear 909 is meshed and connected to the side wall of the connecting gear 908, which drives the connecting gear 909 to rotate. The driven connecting rod 910 is connected to the side wall of the fixed pipe 901 through the bearing seat, and the driven connecting rod 910 is connected to the bearing seat in a rotating connection manner, which drives the driven connecting rod 910 to rotate. When the rotating connecting rod 907 and the driven connecting rod 910 rotate, the reflux baffle 911 is opened, so that the hot gas in the calcium carbide furnace main body 1 is introduced into the heat recovery box 4. At this time, the reflux baffle 911 on the anti-reflux structure 9 on the reflux pipe of the exhaust gas is also opened, so that the exhaust gas is introduced into the calcium carbide furnace main body 1 for combustion again.

[0033] After the heat recovery box 4 has been used for a long time, the filter screen 5 will be clogged. At this time, the drive motor 602 is connected to the controller 11 through a wire and the connection method is electrical connection, so that the driving end of the drive motor 602 rotates, and the hexagonal rotating rod 603 is connected to the side wall of the connecting bracket 601 through a bearing seat, and the connection method between the hexagonal rotating rod 603 and the bearing seat is a rotational connection, which drives the hexagonal rotating rod 603 to rotate, and the driven bevel gear 605 is driven to rotate under the condition that the driving bevel gear 604 is meshed with the driven bevel gear 605 on the side wall of the hexagonal rotating rod 603, and the driving rod 606 is connected to the connecting support through the bearing seat. On the side wall of the bracket 601, the driving rod 606 is connected to the bearing seat in a rotational connection to drive the driving rod 606 to rotate, and the other end of the driving rod 606 is connected to the transmission bevel gear 608 through the rotating bevel gear 607 meshing, which drives the transmission bevel gear 608 to rotate. The rotating screw rod 609 is connected to the side wall of the connecting bracket 601 through the bearing seat, and the rotating screw rod 609 is connected to the bearing seat in a rotational connection to drive the rotating screw rod 609 to rotate. The rotating screw rod 609 is spliced ​​by a section of left-handed screw rod and a section of right-handed screw rod. The rotating screw rod 609 is connected to the movable slider 610 in a threaded connection. The cross section of the hexagonal rotating rod 603 is The hexagonal structure has a connecting hole at the center of the movable sleeve 611 corresponding to the hexagonal rotating rod 603, wherein the connection mode of the hexagonal rotating rod 603 and the connecting hole is a sliding connection, and a connecting hole is opened on the movable box 613 and corresponding to the crossbeam of the connecting bracket 601, wherein the connection mode of the crossbeam of the connecting bracket 601 and the connecting hole is a sliding connection, under the condition of driving the two groups of cleaning rollers 617 to move along the crossbeam of the connecting bracket 601 in relative or opposite directions. When the two groups of cleaning rollers 617 move along the crossbeam of the connecting bracket 601 in relative or opposite directions, the hexagonal rotating rod 603 drives the movable sleeve 611 to rotate, and the movable sleeve 611 is located on the side wall of the fixed box. A driving bevel gear 614 is connected to the inner cavity of 612, and the side wall of the driving bevel gear 614 is meshed with a driven bevel gear 615 to drive the driven bevel gear 615 to rotate. The rotating rod 616 is connected to the side wall of the movable box 613 through a bearing seat, and the rotating rod 616 is connected to the bearing seat in a rotating manner to drive the rotating rod 616 to rotate, thereby driving the cleaning roller 617 to rotate, thereby cleaning the filter 5. At this time, the reflux baffle 911 on the anti-reflux structure 9 on the reflux pipe of the exhaust gas is closed, and the reflux baffle 911 on the anti-reflux structure 9 on the reflux pipe of the dust is opened, so that the exhaust gas and dust are introduced into the calcium carbide furnace main body 1 and burned again.

[0034] After the heat recovery box 4 has been used for a long time, crystals will appear on the tube wall of the heat exchange tube 7. At this time, the rotating motor 802 is connected to the controller 11 through a wire and the connection method is electrical connection, so that the driving end of the rotating motor 802 rotates, and the driving rotating rod 803 is connected to the side wall of the fixed shell 801 through a bearing seat, and the connection method between the driving rotating rod 803 and the bearing seat is a rotational connection, which drives the driving rotating rod 803 to rotate. A driving gear 804 is connected to the side wall of the driving rotating rod 803 and is located in the inner cavity of the fixed shell 801. The side wall of the driving gear 804 is meshed with a driven gear 806 through a belt rack 805, so that A driven rotating rod 807 is connected to the center of the driven gear 806, and the driven rotating rod 807 is connected to the side wall of the fixed shell 801 through a bearing seat, wherein the driven rotating rod 807 and the bearing seat are connected in a rotating manner to drive the belt rack 805 to rotate, and a slide groove is provided on the movable connecting plate 809 and corresponds to the limiting slide rail 808, wherein the limiting slide rail 808 is connected to the slide groove in a sliding manner, and the driving lever 810 and the connecting slide groove 811 are matched in a clearance manner to drive the movable connecting plate 809 to reciprocate on the side wall of the fixed shell 801, thereby driving the cleaning scraper 812 to reciprocate on the tube wall of the heat exchange tube 7, thereby removing crystals on the tube wall of the heat exchange tube 7.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A furnace gas utilization device for recovering heat energy from calcium carbide furnace gas, comprising a calcium carbide furnace body (1), characterized in that: A guide pipe (2) and a return pipe (3) are connected to the side wall of the calcium carbide furnace body (1); the other ends of the guide pipe (2) and the return pipe (3) are respectively connected to a heat recovery box (4); a filter screen (5) is connected to the inner cavity of the heat recovery box (4); a filter screen cleaning structure (6) is connected to the inner cavity of the heat recovery box (4) and located on the end surface of the filter screen (5); a plurality of groups of heat exchange tubes (7) are connected to the inner cavity of the heat recovery box (4) and located below the filter screen (5); a tube wall cleaning structure (8) is connected to the side wall of the heat exchange tube (7); an anti-backflow structure (9) is connected to the inner cavity of the guide pipe (2) and the return pipe (3); a fixed bracket (10) is connected to the bottom of the heat recovery box (4); a controller (11) is connected to the side wall of the fixed bracket (10); and a heat insulation board (12) is provided on the side wall of the inner cavity of the heat recovery box (4); The filter cleaning structure (6) comprises a connecting bracket (601), wherein the connecting bracket (601) is connected to the inner cavity of the heat recovery box (4), a driving motor (602) is connected to the side wall of the connecting bracket (601) via a connecting plate, a driving end of the driving motor (602) is connected to a hexagonal rotating rod (603) via a coupling, a driven bevel gear (605) is meshedly connected to the side wall of the hexagonal rotating rod (603) via a driving bevel gear (604), a driving rod (606) is connected at the center of the driven bevel gear (605), the other end of the driving rod (606) is meshedly connected to a transmission bevel gear (608) via a rotating bevel gear (607), a rotating screw rod (609) is connected at the center of the transmission bevel gear (608), and a moving slider (609) is symmetrically connected to the side wall of the rotating screw rod (609). 610), a movable sleeve (611) is symmetrically connected to the side wall of the hexagonal rotating rod (603), a fixed box (612) is connected to the side wall of the movable sleeve (611), the movable box (613) is connected to the side walls of the movable slider (610) and the fixed box (612) and on the crossbeam located on the connecting bracket (601), a driving bevel gear (614) is connected to the side wall of the movable sleeve (611) and in the inner cavity of the fixed box (612), a driven bevel gear (615) is meshingly connected to the side wall of the driving bevel gear (614), a rotating rod (616) is connected at the center of the driven bevel gear (615) and on the side wall of the movable box (613), and a cleaning roller (617) is connected to the side wall of the rotating rod (616) and above the filter screen (5).

2. A furnace gas utilization device for recovering heat energy from calcium carbide furnace gas according to claim 1, wherein the tube wall cleaning structure (8) comprises two groups of fixed shells (801), the two groups of fixed shells (801) are connected to the inner cavity of the heat recovery box (4) and are located on both sides of the heat exchange tube (7), the side walls of the two groups of fixed shells (801) are connected to a rotating motor (802) through a connecting box, the driving end of the rotating motor (802) is connected to a driving rod (803) through a coupling, the side wall of the driving rod (803) and is located in the inner cavity of the fixed shell (801) and is connected to a driving gear (804), and the side wall of the driving gear (804) is connected to the inner cavity of the fixed shell (801). A driven gear (806) is meshedly connected via a belt rack (805), a driven rotating rod (807) is connected at the center of the driven gear (806), limiting slide rails (808) are provided on the upper and lower end surfaces of the fixed shell (801), a movable connecting plate (809) is connected to the limiting slide rail (808), a driving lever (810) is connected to the side wall of the belt rack (805) via a connecting plate, a connecting groove (811) is provided on the side wall of the movable connecting plate (809) and corresponding to the driving lever (810), and a cleaning scraper (812) is connected to the side wall of the movable connecting plate (809) and located on the side wall of the heat exchange tube (7).

3. A furnace gas utilization device for recovering heat energy from calcium carbide furnace gas according to claim 1, wherein the anti-backflow structure (9) comprises a fixed pipe (901), the fixed pipe (901) is connected to the guide pipe (2) and the return pipe (3), a fan (902) is connected to the inner cavity of the fixed pipe (901), an electric telescopic rod (903) is connected to the side wall of the fixed pipe (901) through a connecting seat, a driving end of the electric telescopic rod (903) is connected to a driving rack (904), a fixed slide rail (905) is connected to the side wall of the driving rack (904), the fixed slide rail (905) is connected to the side wall of the fixed pipe (901), and the driving rack (904) A rotating gear (906) is meshedly connected on the side wall of the fixed pipe (901); a rotating connecting rod (907) is connected at the center of the rotating gear (906) and located in the inner cavity of the fixed pipe (901); a connecting gear (908) is connected on the side wall of the rotating connecting rod (907) and located below the fixed pipe (901); a connecting gear (909) is meshedly connected on the side wall of the connecting gear (908); a driven connecting rod (910) is connected at the center of the connecting gear (909) and located in the inner cavity of the fixed pipe (901); and a backflow baffle (911) is symmetrically connected on the side walls of the rotating connecting rod (907) and the driven connecting rod (910) and located in the inner cavity of the fixed pipe (901).

4. A furnace gas utilization device for recovering heat energy from calcium carbide furnace gas according to claim 1, characterized in that: The other end of the guide pipe (2) is connected to the end face of the heat recovery box (4), and the return pipe (3) includes a dust return pipe and a waste gas return pipe, wherein one end of the dust return pipe is connected to the end face of the heat recovery box (4), and one end of the waste gas return pipe is connected to the bottom of the heat recovery box (4), and the other ends of the dust return pipe and the waste gas return pipe are connected to the side wall of the calcium carbide furnace body (1) through a return main pipe, and the dust return pipe and the waste gas return pipe are both provided with an anti-backflow structure (9).

5. The furnace gas utilization device for recovering heat energy of calcium carbide furnace gas according to claim 1, characterized in that: The driving motor (602) is connected to the controller (11) via a wire and the connection method is electrical connection. The hexagonal rotating rod (603) is connected to the side wall of the connecting bracket (601) via a bearing seat, wherein the connection method of the hexagonal rotating rod (603) and the bearing seat is a rotational connection. The driving rod (606) is connected to the side wall of the connecting bracket (601) via a bearing seat, wherein the connection method of the driving rod (606) and the bearing seat is a rotational connection.

6. A furnace gas utilization device for recovering heat energy from calcium carbide furnace gas according to claim 1, characterized in that: The cross section of the hexagonal rotating rod (603) is a hexagonal structure, a connecting hole is provided at the center of the movable sleeve (611) and corresponds to the hexagonal rotating rod (603), wherein the hexagonal rotating rod (603) and the connecting hole are connected in a sliding manner, and a connecting hole is provided on the movable box (613) and corresponds to the crossbeam of the connecting bracket (601), wherein the crossbeam of the connecting bracket (601) and the connecting hole are connected in a sliding manner.

7. The furnace gas utilization device for recovering heat energy of calcium carbide furnace gas according to claim 3, characterized in that: The driving lever (810) and the connecting slide groove (811) are matched in a clearance fit, the fan (902) is connected to the controller (11) via a wire and the connection method is an electrical connection, the electric telescopic rod (903) is connected to the controller (11) via a wire and the connection method is an electrical connection, and a slide groove is provided on the fixed slide rail (905) and corresponds to the driving rack (904), wherein the driving rack (904) and the slide groove are connected in a sliding manner.

8. A recovery method, implemented according to a furnace gas utilization device for recovering heat energy of calcium carbide furnace gas according to any one of claims 1 to 7, characterized in that: The steps are as follows: Step 1: Control the operation of the fan (902) and the electric telescopic rod (903) through the controller (11); when the driving end of the electric telescopic rod (903) moves forward, the driving rack (904) is driven to move forward; when the driving rack (904) moves forward, the rotating gear (906), the rotating connecting rod (907), the connecting gear (908), the connecting gear (909), the driven connecting rod (910) and the reflux baffle (911) are driven to rotate in sequence, so that the reflux baffle (911) is opened, so that the furnace gas is poured into the heat recovery box (4) by the fan; Step 2: The furnace gas passes through the filter screen (5) and enters the inner cavity of the heat recovery box (5). A plurality of groups of heat exchange tubes (7) are connected below the filter screen (5), thereby heating the water in the heat exchange tubes (7); Step 3: opening the backflow baffle (911) on the backflow prevention structure (9) on the backflow pipe of the exhaust gas through the controller (11), so that the furnace gas flows back into the calcium carbide furnace body (1); Step 4: The driving motor (602) is controlled by the controller (11). When the driving end of the driving motor (602) rotates, it drives the six-sided rotating rod (603), the driving bevel gear (604), the driven bevel gear (605), the driving rod (606), the rotating bevel gear (607), the transmission bevel gear (608) and the rotating screw (609) in sequence. When the rotating screw (609) rotates, it drives the moving slider (610), the moving sleeve (611), the moving box (613) and the two sets of cleaning rollers (617) to move on the connecting bracket (601 ) moves in opposite or contradictory directions, and at the same time, the hexagonal rotating rod (603) drives the movable sleeve (611) to rotate, the driving bevel gear (614), the driven bevel gear (615), the rotating rod (616) and the cleaning roller (617) to rotate, thereby cleaning the filter (5). At this time, the backflow baffle (911) on the anti-backflow structure (9) on the backflow pipe of the exhaust gas is closed, and the backflow baffle (911) on the anti-backflow structure (9) on the backflow pipe of the dust is opened, so that the exhaust gas and dust are introduced into the calcium carbide furnace body (1) for re-combustion.

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