Radioactive waste barrel-based pyrolysis furnace feeding device and feeding method

Abstract

The application relates to a pyrolysis furnace feeding device and method based on a radioactive waste barrel, which comprises a barrel holding mechanism for clamping a waste barrel containing radioactive waste; a rotating base connected with the barrel holding mechanism, the rotating base being used for moving the waste barrel clamped by the barrel holding mechanism to the upper side of a pyrolysis furnace; a lifting and overturning mechanism installed on the rotating base and connected with the barrel holding mechanism, the lifting and overturning mechanism being used for overturning the barrel holding mechanism; a feeding mechanism comprising an upper top end and a lower bottom end, the lower bottom end being installed above the pyrolysis furnace and being in contact connection with the pyrolysis furnace, and the upper top end being in contact connection with a pouring opening of the overturned waste barrel; the feeding mechanism further comprises a plug plate assembly installed between the upper top end and the lower bottom end and used for blocking radioactive pyrolysis gas generated by combustion of the pyrolysis furnace from leaking out. The application realizes the packing and conveying of waste and the combustion process without the participation of workers, and reduces the radiation risk of workers.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radioactive waste incineration, and in particular to a pyrolysis furnace feeding device based on a radioactive waste barrel and a feeding method. BACKGROUND

[0002] A large amount of radioactive waste is generated during the operation and maintenance of scientific research, experiments, nuclear power plants and other nuclear facilities. Among these wastes, combustible waste accounts for a large proportion, such as plastics, rubber, cotton fabrics, wood, resin, waste oil, etc. If these wastes are not properly treated, they will not only cause long-term pollution to the environment, but also may pose a threat to human health.

[0003] Incineration, as one of the earliest radioactive waste volume reduction technologies, is very suitable for treating these low-level radioactive solid wastes. The pyrolysis furnace, as the core equipment of the radioactive waste incineration system, has the main function of making combustible solid waste decompose in the equipment under heat, and burning the pyrolysis coke. Through pyrolysis treatment, not only can the waste be greatly reduced in volume, but also can be inorganic, which is beneficial to the final disposal.

[0004] Currently, the pyrolysis furnace feeding needs to divide the combustible solid waste in the waste barrel to be treated into waste packs, and then add the waste packs one by one into the pyrolysis furnace for treatment. This method needs to open the waste feeding port of the pyrolysis furnace every time a waste pack is added, which leads to the need to frequently open and close the feeding port when the pyrolysis furnace has a large treatment capacity, increasing the risk of radioactive pyrolysis gas leakage. In addition, during the packing and transportation of the waste packs, the operator is prone to receive a high radiation risk. For radioactive waste resin with small particles and large quantity, it is difficult to pack and needs to rely on special equipment for feeding, which not only increases the equipment cost, but also makes the pyrolysis furnace feeding process more complex.

[0005] In related technologies, there is a problem that the workers have a high radiation risk because they participate in the packing, transportation and combustion process of the waste packs.

[0006] The above problems need to be solved. SUMMARY

[0007] The present application discloses a pyrolysis furnace feeding device based on a radioactive waste barrel and a feeding method, aiming to solve the technical problems existing in the prior art.

[0008] The present application adopts the following technical solutions:

[0009] In one aspect, the present application provides a pyrolysis furnace feeding device based on a radioactive waste barrel, comprising: a barrel holding mechanism for holding a waste barrel containing radioactive waste, wherein the waste barrel comprises a feeding opening; a rotating base connected to the barrel holding mechanism through a lifting and overturning mechanism, the rotating base being used to move the waste barrel held by the barrel holding mechanism to above the pyrolysis furnace; a lifting and overturning mechanism installed on the rotating base and connected to the barrel holding mechanism, the lifting and overturning mechanism being used to overturn the barrel holding mechanism, the overturning direction being from a direction in which the feeding opening of the waste barrel is not directed towards the pyrolysis furnace to a direction in which the feeding opening of the waste barrel is directed towards the pyrolysis furnace; a feeding mechanism comprising an upper top end and a lower bottom end, the lower bottom end being installed above the pyrolysis furnace and being in contact with the pyrolysis furnace, the upper top end being in contact with the feeding opening of the overturned waste barrel; the feeding mechanism further comprising a plug assembly installed between the upper top end and the lower bottom end, the plug assembly being used to block the leakage of radioactive pyrolysis gas generated by the combustion of the pyrolysis furnace.

[0010] Optionally, further comprising: a barrel cover assembly installed at the feeding opening of the waste barrel and closely fitted to the feeding opening, the barrel cover assembly being used to close the feeding opening after solid waste is fed into the waste barrel; a barrel cover limiting mechanism installed between the barrel cover assembly and the barrel holding mechanism and fixedly connected to the barrel holding mechanism, the barrel cover limiting mechanism being used to drive the barrel cover assembly to closely fit to the feeding opening.

[0011] Optionally, the barrel holding mechanism comprises: a connecting and fixing member installed on the lifting and overturning mechanism; two clamping arms, the two clamping arms being respectively installed at two ends of the connecting and fixing member and being hingedly connected to the connecting and fixing member, the two clamping arms being capable of opening and closing movement relative to the connecting and fixing member; and a clamp installed on the clamping arms and being arranged at an end away from the end at which the clamping arms are connected to the connecting and fixing member, the clamp being used to clamp the waste barrel.

[0012] Optionally, the barrel holding mechanism further comprises: a pulling arm arranged between the two clamping arms and used to push the two clamping arms to perform opening and closing movement; and a telescopic driving member comprising two ends, one end of the telescopic driving member being fixedly installed on the connecting and fixing member and the other end of the telescopic driving member being connected to the pulling arm, the telescopic driving member being used to push the pulling arm to perform linear movement.

[0013] Optionally, the lifting and overturning mechanism comprises: a barrel holding connecting shaft fixedly connected to the barrel holding mechanism, the barrel holding mechanism being capable of rotating with the barrel holding connecting shaft; a lifting driving member connected to the barrel holding connecting shaft and used to drive the barrel holding connecting shaft to move up and down; and a cam overturning limiting plate provided with a convex opening path with a fold line, the barrel holding connecting shaft passing through the cam overturning limiting plate based on the convex opening path.

[0014] Optionally, the lifting and overturning mechanism further comprises: an overturning limiting plate support connected with the cam overturning limiting plate, used for supporting the cam overturning limiting plate; and a support base connected with the overturning limiting plate support and the lifting driving element, used for supporting the overturning limiting plate support and the lifting driving element.

[0015] Optionally, the lifting and overturning mechanism further comprises: a limiting track installed on the support base and parallel to the moving direction of the lifting driving element; and a limiting element with one end embedded in the limiting track and the other end fixedly connected with the bucket holding shaft.

[0016] Optionally, the rotating base further comprises: a rotating driving element connected with the lifting and overturning mechanism, used for driving the support base to rotate; and a support shell arranged outside the rotating driving element.

[0017] Optionally, the feeding mechanism further comprises: a lower hopper comprising an upper top end connected with the feeding opening of the waste bucket; an airlock bin comprising a lower bottom end, the lower bottom end of the airlock bin being connected with the pyrolysis furnace, and the other end of the airlock bin away from the lower bottom end being connected with the lower hopper; and the plug assembly comprising an upper plug and a lower plug, the upper plug being installed between the lower hopper and the airlock bin, and the lower plug being installed between the airlock bin and the pyrolysis furnace.

[0018] Optionally, the plug assembly further comprises: an upper plug driving element connected with the upper plug, used for driving the upper plug to close; and a lower plug driving element connected with the lower plug, used for driving the lower plug to close.

[0019] Optionally, the bucket cover assembly comprises: a plurality of blades arranged in a stacked manner to form a bucket cover; an upper guide rail arranged above the plurality of blades, the upper guide rail being provided with guide openings, and the plurality of blades being provided with columnar bodies penetrating through the guide openings; a lower guide rail arranged below the plurality of blades; and an opening and closing driving element installed on the lower guide rail and connected with the upper guide rail through a gear, the opening and closing driving element being used for driving the upper guide rail to rotate.

[0020] Optionally, the bucket cover limiting mechanism comprises: a support fixedly installed on the bucket holding mechanism; and an up-and-down moving element connected with the support at one end and connected with the bucket cover assembly at the other end, used for adjusting the distance between the bucket cover assembly and the feeding opening of the waste bucket.

[0021] According to another aspect of the embodiment of the present application, a method for feeding a pyrolysis furnace based on a radioactive waste barrel is also provided, which comprises: obtaining the waste capacity in the waste barrel; clamping the waste barrel by a clamp in a barrel holding mechanism when the waste capacity reaches a preset capacity; rotating a base to drive a lifting and overturning mechanism and the barrel holding mechanism to rotate above the pyrolysis furnace; overturning the barrel holding mechanism by the lifting and overturning mechanism, and the overturning direction is from a direction in which the pouring opening of the waste barrel is not towards the pyrolysis furnace to a direction in which the pouring opening of the waste barrel is towards the pyrolysis furnace; opening the pouring opening of the waste barrel by a barrel cover assembly, and the waste enters a discharging bin; opening the upper plug plate by an upper plug plate driving member, and the waste enters a gas lock bin; closing the upper plug plate by the upper plug plate driving member, opening the lower plug plate by a lower plug plate driving member, and the waste enters the pyrolysis furnace.

[0022] The technical solution adopted by the present application can achieve at least one of the following beneficial effects:

[0023] In the embodiment of the present application, the barrel holding mechanism is used to clamp the waste barrel in which radioactive waste is stored, wherein the waste barrel comprises a pouring opening; the rotating base is connected with the barrel holding mechanism, and is used to drive the waste barrel clamped by the barrel holding mechanism to move above the pyrolysis furnace; the lifting and overturning mechanism is installed on the rotating base and connected with the barrel holding mechanism, and is used to overturn the barrel holding mechanism, and the overturning direction is from a direction in which the pouring opening of the waste barrel is not towards the pyrolysis furnace to a direction in which the pouring opening of the waste barrel is towards the pyrolysis furnace; the feeding mechanism comprises an upper top end and a lower bottom end, the lower bottom end is installed above the pyrolysis furnace and connected with the pyrolysis furnace, and the upper top end is connected with the pouring opening of the overturned waste barrel; the feeding mechanism further comprises a plug plate assembly installed between the upper top end and the lower bottom end, and is used to block the leakage of radioactive pyrolysis gas formed by the combustion of the pyrolysis furnace. By arranging the barrel holding mechanism and the lifting and overturning mechanism, the purpose of packaging and transporting waste by mechanical devices is achieved, so that the packaging and transporting of waste and the combustion process do not need the participation of workers, the technical effect of reducing the radiation risk of workers is achieved, and the problem that workers have high radiation risk due to the participation of workers in the packaging, transporting and combustion process of waste is solved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows, which form a part of the present application. The schematic embodiments of the present application and the description and explanation thereof do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1is the overall structure diagram of a pyrolysis furnace feeding device based on a radioactive waste barrel in embodiment 1 of the present application;

[0026] Figure 2 is the structure diagram of a barrel holding mechanism of a pyrolysis furnace feeding device based on a radioactive waste barrel in embodiment 1 of the present application;

[0027] Figure 3 is the structure diagram of a lifting and overturning mechanism of a pyrolysis furnace feeding device based on a radioactive waste barrel in embodiment 1 of the present application;

[0028] Figure 4 is the structure diagram of a rotating base of a pyrolysis furnace feeding device based on a radioactive waste barrel in embodiment 1 of the present application;

[0029] Figure 5 is the structure diagram of a feeding mechanism of a pyrolysis furnace feeding device based on a radioactive waste barrel in embodiment 1 of the present application;

[0030] Figure 6 is the structure diagram of a barrel cover assembly of a pyrolysis furnace feeding device based on a radioactive waste barrel in embodiment 1 of the present application;

[0031] Figure 7 is the structure diagram of a barrel cover limiting mechanism of a pyrolysis furnace feeding device based on a radioactive waste barrel in embodiment 1 of the present application;

[0032] Figure 8 is the flow chart of a pyrolysis furnace feeding device and feeding method based on a radioactive waste barrel in embodiment 2 of the present application.

[0033] Explanation of reference numerals:

[0034] 1, rotating base; 2, lifting and overturning mechanism; 3, barrel holding mechanism; 4, barrel cover assembly; 5, waste barrel; 6, feeding mechanism;

[0035] 11, rotating driving member; 12, support shell;

[0036] 21, support base; 22, overturning limiting plate support; 23, cam overturning limiting plate; 24, limiting rail; 25, limiting member; 26, barrel holding connecting shaft; 27, lifting driving member;

[0037] 31, connecting and fixing member; 32, telescopic driving member; 33, pull arm; 34, clamp; 35, clamping arm;

[0038] 41, cover body; 42, opening and closing driving member; 43, blade; 44, upper guide rail; 45, lower guide rail; 46, barrel cover limiting mechanism; 461, up and down moving member; 462, support;

[0039] 61, lower hopper; 62, plug assembly; 621, upper plug; 622, upper plug drive; 63, airlock chamber; 623, lower plug; 624, lower plug drive. DETAILED DESCRIPTION

[0040] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described below in connection with specific embodiments of the present application and corresponding drawings. In the description of the present application, it should be noted that the term "or" is generally used in the sense of including "and / or" unless the context clearly indicates otherwise.

[0041] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be magnetic connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three or more, etc., unless otherwise explicitly specified and limited.

[0042] Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0043] First, for the convenience of understanding the embodiments of the present application, the following will explain and describe some terms or nouns involved in the present application:

[0044] Pyrolysis furnace is a kind of equipment that seals pyrolysis materials in the furnace body, increases the temperature and pressure in the furnace body by heating, and uses high temperature to make pyrolysis materials crack into low molecular materials.

[0045] To solve the problems in the prior art, the present application provides a pyrolysis furnace feeding device based on a radioactive waste barrel and a feeding method.

[0046] Embodiment 1

[0047] The present embodiment provides a pyrolysis furnace feeding device based on a radioactive waste barrel, as shown in Figure 1 , the present embodiment provides a pyrolysis furnace feeding device based on a radioactive waste barrel, as shown in Figure 1 is the overall structure diagram of a pyrolysis furnace feeding device based on a radioactive waste barrel in embodiment 1 of the present application.

[0048] The feeding device comprises a bucket holding mechanism 3 for holding a waste bucket 5 containing radioactive waste, wherein the waste bucket 5 comprises a pouring opening; a rotating base 1 connected with the bucket holding mechanism 3 through a lifting and overturning mechanism 2, the rotating base 1 being used to drive the waste bucket 5 held by the bucket holding mechanism 3 to move above the pyrolysis furnace; the lifting and overturning mechanism 2 is installed on the rotating base 1 and connected with the bucket holding mechanism 3, and is used to drive the bucket holding mechanism 3 to overturn, the overturning direction being from a direction in which the pouring opening of the waste bucket 5 does not face the pyrolysis furnace to a direction in which the pouring opening of the waste bucket 5 faces the pyrolysis furnace; a feeding mechanism 6 comprising an upper top end and a lower bottom end, the lower bottom end being installed above the pyrolysis furnace and being in contact with the pyrolysis furnace, and the upper top end being in contact with the pouring opening of the overturned waste bucket 5; the feeding mechanism 6 further comprises a plug assembly 62 installed between the upper top end and the lower bottom end, and is used to block the leakage of radioactive pyrolysis gas formed by the combustion of the pyrolysis furnace.

[0049] Based on the above structure, the waste bucket 5 contains various radioactive waste, which emits radioactive substances and affects the health of workers. Therefore, the radioactive waste is stored in the waste bucket 5 to block the influence of the radioactive waste on the health of workers. The waste bucket 5 can be made of lead material which can shield radioactive substances.

[0050] Optionally, to reduce the influence of radioactive waste on workers, the waste bucket 5 can be used to pour the radioactive waste in the waste bucket 5 into the pyrolysis furnace through the pyrolysis furnace feeding device, without the need for workers to open the bucket cover of the waste bucket 5 and manually pour, effectively avoiding the workers from contacting the radioactive waste in the waste bucket 5 and reducing the safety risk of workers affected by radioactivity.

[0051] Optionally, as shown in Figure 1 The bucket holding mechanism 3 holds the waste bucket 5, and in the case that the waste bucket 5 is full, the rotating base 1 drives the bucket holding mechanism 3 and the waste bucket 5 to rotate from the direction of the workers to the direction of the pyrolysis furnace, so that the waste bucket 5 is above the pyrolysis furnace. The lifting and overturning mechanism 2 drives the bucket holding mechanism 3 to lift and overturn, so that the originally upward pouring opening of the waste bucket 5 can face the pyrolysis furnace in the upward direction, so that under the action of gravity, the radioactive waste in the waste bucket 5 falls into the pyrolysis furnace, effectively avoiding human contact with radioactive waste and reducing the safety risk of workers.

[0052] Optionally, a waste barrel 5 can be equipped with a gravity sensing module, or an inductor can be installed at the drop opening, so as to detect the amount of radioactive waste in the waste barrel 5, and then determine whether the waste barrel 5 is full of radioactive waste. In the process of rotating the waste barrel 5 to the upper side of the pyrolysis furnace by the rotating base 1, if the pyrolysis furnace is far away from the waste barrel 5 dropped by the staff, a roller can be installed at the lower part of the rotating base 1, so as to push the pyrolysis furnace feeding device to the vicinity of the pyrolysis furnace, and then the waste barrel 5 is rotated and moved to the upper side of the pyrolysis furnace by the rotating base 1.

[0053] Optionally, when the drop opening of the waste barrel 5 is directed towards the pyrolysis furnace, the drop opening of the waste barrel 5 needs to be closely attached to the inlet of the pyrolysis furnace, so that the radioactive waste will not be exposed to the air during the falling process, thereby not causing safety hazards to the staff. However, due to the high heat generated by the internal combustion of the pyrolysis furnace, the process of connecting the waste barrel 5 to the pyrolysis furnace can cause the radioactive waste in the waste barrel 5 to directly burn in the waste barrel 5, so that the waste barrel 5 cannot be immediately taken away, and a large amount of radioactive substances will be emitted at the inlet of the pyrolysis furnace when the waste barrel 5 is lifted up.

[0054] Optionally, based on this, an inlet mechanism 6 is placed between the pyrolysis furnace and the waste barrel 5. The inlet mechanism 6 is always placed at the inlet of the pyrolysis furnace. The inlet mechanism 6 has a plug assembly 62. After the waste barrel 5 is turned over, the drop opening of the waste barrel 5 is connected to the inlet mechanism 6. The barrel cover of the waste barrel 5 is opened. The radioactive waste enters the inlet mechanism 6 and falls on the plug assembly 62. The barrel cover of the waste barrel 5 is closed. The plug assembly 62 of the inlet mechanism 6 is opened, so that the radioactive waste enters the pyrolysis furnace. At this time, the uppermost waste barrel 5 blocks the uppermost inlet of the inlet mechanism 6, and the barrel cover is closed, which is equivalent to a plate blocking the uppermost inlet of the inlet mechanism 6. The radioactive substances in the pyrolysis furnace are blocked by the barrel cover and will not be exposed to the environment, effectively reducing the safety hazards to the staff. After all the radioactive waste falls into the pyrolysis furnace, the plug assembly 62 of the inlet mechanism 6 is closed, thereby blocking the inlet of the pyrolysis furnace. At this time, the waste barrel 5 can be lifted up and the barrel cover can be opened. The radioactive substances in the pyrolysis furnace are effectively prevented from being exposed to the air.

[0055] In some preferred embodiments, it further includes: a barrel cover assembly 4 installed at the drop opening of the waste barrel 5 and closely attached to the drop opening, used to close the drop opening after the solid waste is dropped into the waste barrel 5; a barrel cover limiting mechanism 46 installed between the barrel cover assembly 4 and the barrel holding mechanism 3 and fixedly connected with the barrel holding mechanism 3, used to drive the barrel cover assembly 4 to closely attach to the drop opening.

[0056] Based on the above structure, since the lid of the waste barrel 5 cannot be automatically opened or closed, the feeding mechanism 6 cannot be blocked when it is above the pyrolysis furnace, so the lid assembly 4 that can be automatically opened and closed is arranged, which is fastened at the throwing opening of the waste barrel 5 through the lid limiting mechanism 46.

[0057] Optionally, after the barrel holding mechanism 3 clamps the waste barrel 5, the barrel holding mechanism 3 drives the lid limiting mechanism 46 to move downward, until the lid assembly 4 is tightly attached to the barrel holding mechanism 3, and the opening and closing of the lid assembly 4 realizes that the throwing opening of the waste barrel 5 can be automatically opened and closed.

[0058] In some preferred embodiments, the barrel holding mechanism 3 comprises: a connecting fixed part 31 installed on the lifting and overturning mechanism 2; two clamping arms 35, which are respectively installed at two ends of the connecting fixed part 31 and are hinged to the connecting fixed part 31, and can move relative to the connecting fixed part 31; and a clamp 34 installed on the clamping arm 35 and arranged away from the end of the clamping arm 35 connected to the connecting fixed part 31, for clamping the waste barrel 5.

[0059] Based on the above structure, as shown in Figure 2 , Figure 2 is a barrel holding mechanism structure diagram of a pyrolysis furnace feeding device based on a radioactive waste barrel in Embodiment 1 of the present application. The barrel holding mechanism 3 has two clamping arms 35, which are used to clamp the waste barrel 5. Since the contact area between the clamping arm 35 and the waste barrel 5 is small, there is a risk of the waste barrel 5 falling, so a clamp 34 is arranged at the end of the clamping arm 35 (the clamping part). One clamp 34 is arranged on each clamping arm 35, and the clamp 34 is in the form of a half ring, which can adapt to the cylindrical waste barrel 5, increase the contact area between the clamp 34 and the waste barrel 5, and reduce the risk of the waste barrel 5 falling.

[0060] Optionally, in order to ensure that the barrel holding mechanism 3 can move with the lifting and overturning mechanism 2, a connecting fixed part 31 is arranged to connect the clamping arm 35 with the lifting and overturning mechanism 2, so that the barrel holding mechanism 3 can move when the lifting and overturning mechanism 2 moves.

[0061] In some preferred embodiments, the barrel holding mechanism 3 further comprises: a pulling arm 33 arranged between the two clamping arms 35, for pushing the two clamping arms 35 to move; and a telescopic driving part 32 comprising two ends, one end of which is fixedly installed on the connecting fixed part 31, and the other end is connected with the pulling arm 33, for pushing the pulling arm 33 to move linearly.

[0062] Optionally, the clamping arms 35 are used to clamp the waste barrel 5, but during the clamping process, the clamping arms 35 are opened and closed so that the clamping arms 35 can be loosened and opened to release the waste barrel 5, so the pull arms 33 are arranged on the two clamping arms 35, and there are two pull arms 33, when the two pull arms 33 are moved to the same straight line, the two clamping arms 35 are pushed to move in opposite directions, so as to loosen and open the waste barrel 5. When the waste barrel 5 needs to be clamped, the connection between the two pull arms 33 moves towards the waste barrel 5, so that the angle between the two pull arms 33 gradually decreases, and then the two clamping arms 35 are pulled close to realize clamping of the waste barrel 5.

[0063] In some preferred embodiments, the lifting and overturning mechanism 2 comprises: a barrel holding connecting shaft 26 fixedly connected with the barrel holding mechanism 3, the barrel holding mechanism 3 being rotatable with the barrel holding connecting shaft 26; a lifting driving member 27 connected with the barrel holding connecting shaft 26 to drive the barrel holding connecting shaft 26 to move up and down; and a cam overturning limiting plate 23 provided with a convex opening path of fold lines, the barrel holding connecting shaft 26 passing through the cam overturning limiting plate 23 based on the convex opening path.

[0064] Based on the above structure, as shown in Figure 3 , Figure 3 is a lifting and overturning mechanism structure diagram of a pyrolysis furnace feeding device based on a radioactive waste barrel in Embodiment 1 of the present application. The lifting and overturning mechanism 2 selects a 180-degree cam overturning mechanism, the cam indicating that the cam overturning limiting plate 23 is provided with a convex opening path, the convex opening path being a triangular opening with an angle, and the lifting driving member 27 comprising a pushing assembly, which can be driven by multiple stages of hydraulic pressure, can drive the barrel holding connecting shaft 26 to move up and down, and the barrel holding connecting shaft 26 forms a 180-degree overturning under the action of the cam overturning limiting plate 23, so that the waste barrel 5 is lifted and overturned by one hundred and eighty degrees, and the opening for dropping is directed downward.

[0065] In some preferred embodiments, the lifting and overturning mechanism 2 further comprises: an overturning limiting plate support 22 connected with the cam overturning limiting plate 23 to support the cam overturning limiting plate 23; and a support base 21 connected with the overturning limiting plate support 22 and the lifting driving member 27 to support the overturning limiting plate support 22 and the lifting driving member 27.

[0066] Based on the above structure, in the working process of the lifting and overturning mechanism 2, since the waste barrel 5 is full of radioactive waste and has a certain weight, in order to avoid tilting or instability of the lifting and overturning mechanism 2 during overturning, the overturning limiting plate support 22 is connected to the cam overturning limiting plate 23, which can support the cam overturning limiting plate 23, thereby realizing the stability of the structure. In the process of rotating the lifting and overturning mechanism 2 by the rotating base 1, the whole lifting and overturning mechanism 2 is rotated, but the overturning limiting plate support 22 and the lifting driving part 27 are in contact with the rotating base 1, so a supporting base 21 is made, and the overturning limiting plate support 22 and the lifting driving part 27 are arranged on the supporting base 21, so that when the rotating base 1 drives the supporting base 21 to rotate, the whole lifting and overturning mechanism 2 can be rotated.

[0067] In some preferred embodiments, the lifting and overturning mechanism 2 further comprises: a limiting rail 24 installed on the supporting base 21 and parallel to the moving direction of the lifting driving part 27; and a limiting part 25 embedded in the limiting rail 24 at one end and fixedly connected with the barrel holding connecting shaft 26 at the other end.

[0068] Based on the above structure, in order to ensure the stability of the barrel holding connecting shaft 26 during movement and overturning and always keep moving up and down, the limiting rail 24 and the limiting part 25 are arranged, the limiting part 25 is fixedly connected with the barrel holding connecting shaft 26 and clamped in the limiting rail 24, and under the action of the limiting rail 24 and the limiting part 25, the barrel holding connecting shaft 26 moves up and down along the limiting rail 24, thereby realizing the effect of moving the waste barrel 5 up and down.

[0069] In some preferred embodiments, the rotating base 1 further comprises: a rotating driving part 11 connected with the lifting and overturning mechanism 2 and used for driving the supporting base 21 to rotate; and a supporting shell 12 arranged outside the rotating driving part 11.

[0070] Based on the above structure, as shown in Figure 4 , Figure 4 is a rotating base structure diagram of a pyrolysis furnace feeding device based on a radioactive waste barrel in Embodiment 1 of the present application. The rotating base 1 is used to drive the lifting and overturning mechanism 2 to rotate, so a rotating driving part 11 is needed, which can be a rotating motor (servo motor) and can drive the lifting and overturning mechanism 2 to rotate. Since the rotating driving part 11 is a device with rotation, a supporting shell 12 is arranged outside it, which is beneficial to appearance and can protect the rotating driving part 11 from being bumped, and in addition, a roller can be installed at the bottom of the supporting shell 12, which facilitates pushing the feeding device.

[0071] In some preferred embodiments, the feeding mechanism 6 further comprises: a lower hopper 61, comprising an upper end connected with the dropping opening of the waste barrel 5; an airlock chamber 63, comprising a lower end connected with the pyrolysis furnace, and the other end of the airlock chamber 63 connected with the lower hopper 61; and a plug assembly 62, comprising an upper plug 621 and a lower plug 623, wherein the upper plug 621 is installed between the lower hopper 61 and the airlock chamber 63, and the lower plug 623 is installed between the airlock chamber 63 and the pyrolysis furnace.

[0072] Based on the above structure, as shown in Figure 5 Figure 5 is a feeding mechanism structure diagram of a pyrolysis furnace feeding device based on a radioactive waste barrel in Embodiment 1 of the present application. The lower hopper 61 is arranged at the upper end and closely adheres to the waste barrel 5 after being turned over. At this time, the upper plug 621 is opened, the barrel cover assembly 4 is opened, the radioactive waste in the waste barrel 5 falls on the lower plug 623. At this time, the upper plug 621 is closed, and the barrel cover assembly 4 is also closed. Since the upper plug 621 blocks, a sealed space is formed between the upper plug 621 and the lower plug 623, and the radioactive waste cannot be exposed to the environment. The waste barrel 5 can be directly moved away from the pyrolysis furnace.

[0073] Optionally, after the waste barrel 5 is moved away from the vicinity of the pyrolysis furnace, the lower plug 623 is opened, and the radioactive waste falls into the pyrolysis furnace. Since the upper plug 621 is present, the radioactive material in the pyrolysis furnace and the falling radioactive waste are not exposed to the environment, effectively reducing the safety hazards of the workers. After the radioactive waste falls, the lower plug 623 is closed and returns to the initial state, i.e., the state that the upper plug 621 and the lower plug 623 are both closed.

[0074] Optionally, the opening degree of the lower plug 623 can be controlled to control the amount of radioactive waste dropped into the pyrolysis furnace. In the case that there is more radioactive waste in the pyrolysis furnace, in order to avoid insufficient decomposition, the opening degree of the lower plug 623 can be controlled so that the lower plug 623 only opens part of the opening, so that part of the radioactive waste falls. After the amount of radioactive waste in the pyrolysis furnace is reduced, the lower plug 623 is fully opened, effectively achieving the effect of sufficient decomposition of the pyrolysis furnace on the radioactive waste.

[0075] In some preferred embodiments, the plug assembly 62 further comprises: an upper plug driving member 622 connected with the upper plug 621 for driving the closing of the upper plug 621; and a lower plug driving member 624 connected with the lower plug 623 for driving the closing of the lower plug 623.

[0076] ​Optionally, to achieve the automatic opening and closing of the upper and lower insertion plates 621 and 623, an upper insertion plate driving member 622 is arranged on the upper insertion plate 621. The upper insertion plate driving member 622 can be a telescopic air cylinder, which pushes the upper insertion plate 621 to achieve the closing effect of the upper insertion plate 621 on the lower hopper 61. In addition, a lower insertion plate driving member 624 is arranged on the lower insertion plate 623. The lower insertion plate driving member 624 can also be a telescopic air cylinder, which pushes the lower insertion plate 623 to achieve the closing effect of the lower insertion plate 623 on the airlock bin 63.

[0077] In some preferred embodiments, the bucket cover assembly 4 comprises: a plurality of blades 43 arranged to form a bucket cover; an upper guide rail 44 arranged above the plurality of blades 43, the upper guide rail 44 being provided with a guide opening, and the plurality of blades 43 being provided with a column body passing through the guide opening; a lower guide rail 45 arranged below the plurality of blades 43; and an opening and closing driving member 42 installed on the lower guide rail 45 and connected to the upper guide rail 44 through a gear, the opening and closing driving member 42 being used to drive the upper guide rail 44 to rotate.

[0078] Based on the above structure, as shown in Figure 6 Figure 6 is a bucket cover assembly structure diagram of a pyrolysis furnace feeding device based on a radioactive waste bucket in Embodiment 1 of the present application. To ensure the opening and closing of the bucket cover assembly 4, the bucket cover is arranged in the form of a plurality of blades 43, the plurality of blades 43 are gathered together, and the upper guide rail 44 and the lower guide rail 45 are arranged above and below the plurality of blades 43, i.e. the upper guide rail 44 is arranged above the blades 43, and the lower guide rail 45 is arranged below the blades 43. The clamping action of the upper guide rail 44 and the lower guide rail 45 can support the plurality of blades 43. The cover body 41 is clamped in the middle of the upper guide rail 44 and the lower guide rail 45. The opening and closing driving member 42 is arranged on the cover body 41. The opening and closing driving member 42 is a pushing device, which can be a motor. The upper guide rail 44 is connected to the opening and closing driving member 42, and the plurality of blades are connected to the upper guide rail 44. Under the action of the opening and closing driving member 42 pushing the upper guide rail 44, the plurality of blades 43 move together, so that the plurality of blades 43 are gathered or dispersed at the same time, thereby achieving the opening and closing of the bucket cover assembly 4.

[0079] Optionally, a limiting support is arranged on each of the plurality of blades 43, and a hole is arranged on the upper guide rail 44 for the limiting support to pass through, so that the limiting support can only move in the hole, thereby achieving that the plurality of blades 43 can only move in a limited direction, effectively achieving the opening and closing effect of the bucket cover assembly 4.

[0080] In some preferred embodiments, the bucket cover limiting mechanism 46 comprises: a support 462 fixedly installed on the bucket holding mechanism 3; and an up-down moving member 461 connected to the support 462 at one end and connected to the bucket cover assembly 4 at the other end, used to adjust the distance between the bucket cover assembly 4 and the feeding opening of the waste bucket 5.

[0081] Based on the above structure, as shown in​Figure 7 As shown, Figure 7 Figure 1 is a structure diagram of a bucket cover limiting mechanism of a pyrolysis furnace feeding device based on a radioactive waste barrel in embodiment 1 of the present application. The support 462 is connected to the barrel holding mechanism 3, the up-down moving piece 461 is fixed on the support 462, and the other end pulls the bucket cover assembly 4 up and down. When the barrel holding mechanism 3 clamps the waste barrel 5, the up-down moving piece 461 drives the bucket cover assembly 4 to approach the waste barrel 5, so as to block the pouring opening of the waste barrel 5. When the radioactive waste in the waste barrel 5 is poured out and moved to the vicinity of the staff, the bucket cover assembly 4 can be moved away. When the barrel holding mechanism 3 continuously clamps the waste barrel 5, the bucket cover assembly 4 always tightly blocks the pouring opening of the waste barrel 5. Only when the barrel holding mechanism 3 is placed on the ground and is no longer clamped by the barrel holding mechanism 3, the up-down moving piece 461 drives the bucket cover assembly 4 to move away from the pouring opening of the waste barrel 5. The radioactive waste in the waste barrel 5 is effectively prevented from being exposed to the environment, and the staff is prevented from being damaged by radiation.

[0082] Through the above feeding device, the barrel holding mechanism 3 and the lifting and overturning mechanism 2 are arranged, and the waste is packaged and transported by mechanical devices, so as to realize that the staff does not need to participate in the packaging and transportation of the waste and the combustion process, reduce the radiation risk of the staff, and solve the problem that the staff has a high radiation risk due to the need of the staff to participate in the packaging, transportation and combustion process of the waste.

[0083] Embodiment 2

[0084] According to the embodiment of the present application, an embodiment of a pyrolysis furnace feeding method based on a radioactive waste barrel is also provided, as shown in Figure 8 As shown, Figure 8 Figure 1 is a flow chart of a pyrolysis furnace feeding device and a feeding method based on a radioactive waste barrel in embodiment 2 of the present application.

[0085] Step S1, obtaining the waste capacity in the waste barrel 5;

[0086] Step S2, when the waste capacity reaches the preset capacity, the clamp 34 in the barrel holding mechanism 3 clamps the waste barrel 5;

[0087] Step S3, rotating the base 1 to drive the lifting and overturning mechanism 2 and the barrel holding mechanism 3 to rotate above the pyrolysis furnace;

[0088] Step S4, the lifting and overturning mechanism 2 drives the barrel holding mechanism 3 to overturn, and the overturning direction is from the direction in which the pouring opening of the waste barrel 5 does not face the pyrolysis furnace to the direction in which the pouring opening of the waste barrel 5 faces the pyrolysis furnace;

[0089] Step S5, the bucket cover assembly 4 controls the pouring opening of the waste barrel 5 to be opened, and the waste enters the discharge bin;

[0090] Step S6, the upper plug plate driving member 622 drives the upper plug plate 621 to open, and the waste enters the air lock chamber 63.

[0091] Step S7, the upper plug plate driving member 622 drives the upper plug plate 621 to close, the lower plug plate driving member 624 drives the lower plug plate 623 to open, and the waste enters the pyrolysis furnace.

[0092] Through the above steps S1 to S7, the setting of the bucket mechanism 3 and the lifting and overturning mechanism 2 are achieved, and the waste is packaged and transported by mechanical devices, so as to realize the packaging and transportation of waste without the participation of workers, reduce the radiation risk of workers, and solve the problem that workers have high radiation risk due to the participation of workers in the packaging, transportation and combustion process of waste.

[0093] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the art, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A feeding device for a pyrolysis furnace based on radioactive waste bins, characterized in that, include: A bucket-holding mechanism (3) is used to hold a waste bucket (5) containing radioactive waste, wherein the waste bucket (5) includes a dispensing opening; The rotating base (1) is connected to the bucket holding mechanism (3) through the lifting and flipping mechanism (2). The rotating base (1) is used to move the waste bucket (5) held by the bucket holding mechanism (3) to the top of the pyrolysis furnace. The lifting and flipping mechanism (2) is installed on the rotating base (1) and connected to the bucket holding mechanism (3). The lifting and flipping mechanism (2) is used to drive the bucket holding mechanism (3) to flip. The lifting and flipping mechanism (2) includes: a bucket-holding connecting shaft (26), which is fixedly connected to the bucket-holding mechanism (3), and the bucket-holding mechanism (3) can rotate with the bucket-holding connecting shaft (26); a lifting drive component (27), which is connected to the bucket-holding connecting shaft (26) and drives the bucket-holding connecting shaft (26) to move up and down; and a cam flipping limit plate (23), which is provided with a convex opening path with a zigzag line, and the bucket-holding connecting shaft (26) passes through the cam flipping limit plate (23) based on the convex opening path. The lifting and flipping mechanism (2) further includes: a flipping limit plate bracket (22), which is connected to the cam flipping limit plate (23) and is used to support the cam flipping limit plate (23); and a support base (21), which is connected to the flipping limit plate bracket (22) and the lifting drive component (27) and is used to support the flipping limit plate bracket (22) and the lifting drive component (27). The lifting and flipping mechanism (2) further includes: a limiting rail (24), which is installed on the support base (21) and is parallel to the moving direction of the lifting drive (27); a limiting member (25), one end of which is embedded in the limiting rail (24) and the other end is fixedly connected to the bucket connecting shaft (26); The feeding mechanism (6) includes an upper top end and a lower bottom end. The lower bottom end is installed above the pyrolysis furnace and is in contact with the pyrolysis furnace. The upper top end is in contact with the discharge opening of the overturned waste bin (5). The feeding mechanism (6) also includes a baffle assembly (62), which is installed between the upper top end and the lower bottom end to prevent the leakage of radioactive pyrolysis gas generated by the combustion of the pyrolysis furnace.

2. The pyrolysis furnace feeding device based on a radioactive waste bin according to claim 1, characterized in that, Also includes: The lid assembly (4) is installed at the dispensing opening of the waste bin (5) and fits tightly with the dispensing opening. It is used to close the dispensing opening after solid waste is put into the waste bin (5). The bucket lid limiting mechanism (46) is installed between the bucket lid assembly (4) and the bucket holding mechanism (3) and is fixedly connected to the bucket holding mechanism (3) to drive the bucket lid assembly (4) to fit tightly into the delivery opening.

3. The pyrolysis furnace feeding device based on a radioactive waste bin according to claim 1, characterized in that, The bucket-carrying mechanism (3) includes: The connecting fastener (31) is installed on the lifting and tilting mechanism (2); Two clamping arms (35) are provided. The two clamping arms (35) are respectively installed at both ends of the connecting fastener (31) and are hinged to the connecting fastener (31). The two clamping arms (35) can open and close relative to the connecting fastener (31). A clamp (34) is mounted on a clamping arm (35) and is located at the end away from the clamping arm (35) and connected to the connecting fastener (31) for clamping the waste bin (5).

4. The pyrolysis furnace feeding device based on a radioactive waste bin according to claim 3, characterized in that, The bucket-carrying mechanism (3) also includes: A pull arm (33) is disposed between the two clamping arms (35) and is used to drive the two clamping arms (35) to perform opening and closing movements; The telescopic drive component (32) includes two ends, one end of which is fixedly installed on the connecting fastener (31), and the other end is connected to the pull arm (33) for driving the pull arm (33) to move.

5. The pyrolysis furnace feeding device based on a radioactive waste bin according to claim 1, characterized in that, The rotating base (1) also includes: A rotary drive (11) is connected to the lifting and flipping mechanism (2) and is used to drive the support base (21) to rotate; The support housing (12) is disposed on the outside of the rotary drive (11).

6. The pyrolysis furnace feeding device based on a radioactive waste bin according to claim 1, characterized in that, The feeding mechanism (6) further includes: The hopper (61) includes an upper top end, which is connected to the discharge opening of the waste bin (5); The airlock chamber (63) includes a lower bottom end, the lower bottom end of which is connected to the pyrolysis furnace, and the other end of the airlock chamber (63) away from the lower bottom end is connected to the feeding hopper (61); The insert plate assembly (62) includes an upper insert plate (621) and a lower insert plate (623). The upper insert plate (621) is installed between the feed hopper (61) and the air lock chamber (63), and the lower insert plate (623) is installed between the air lock chamber (63) and the pyrolysis furnace.

7. The pyrolysis furnace feeding device based on a radioactive waste bin according to claim 6, characterized in that, The insert assembly (62) further includes: The upper insert plate drive (622) is connected to the upper insert plate (621) and is used to drive the upper insert plate (621) to close. The lower insert plate drive (624) is connected to the lower insert plate (623) and is used to drive the lower insert plate (623) to close.

8. The pyrolysis furnace feeding device based on a radioactive waste bin according to claim 2, characterized in that, The bucket lid assembly (4) includes: Multiple blades (43) are provided, and multiple blades (43) are combined to form a bucket lid; An upper guide rail (44) is provided above the plurality of blades (43), and a guide opening is provided on the upper guide rail (44), and a column passing through the guide opening is provided on the plurality of blades (43); The lower guide rail (45) is disposed below the plurality of blades (43); An opening and closing drive (42) is installed on the lower guide rail (45) and connected to the upper guide rail (44) via gears. The opening and closing drive (42) is used to drive the upper guide rail (44) to rotate.

9. The pyrolysis furnace feeding device based on a radioactive waste bin according to claim 2, characterized in that, The bucket lid limiting mechanism (46) includes: Support (462) is fixedly installed on the bucket-holding mechanism (3); The vertical moving part (461) is connected at one end to the support (462) and at the other end to the bucket lid assembly (4), and is used to adjust the distance between the bucket lid assembly (4) and the disposal opening of the waste bucket (5).

10. A method for feeding a pyrolysis furnace based on radioactive waste bins, characterized in that, A feeding device for a pyrolysis furnace based on a radioactive waste bin, as described in any one of claims 1 to 9, comprises: Obtain the waste volume inside the waste bin (5); When the waste capacity reaches the preset capacity, the clamp (34) in the bucket holding mechanism (3) clamps the waste bucket (5); The rotating base (1) drives the lifting and flipping mechanism (2) and the bucket holding mechanism (3) to rotate above the pyrolysis furnace; The lifting and turning mechanism (2) drives the bucket holding mechanism (3) to turn so that the waste bucket (5) is facing the pyrolysis furnace. The lid assembly (4) controls the opening of the waste bin (5) to open, and the waste enters the hopper (61). The upper insert plate drive (622) drives the upper insert plate (621) to open, and the waste enters the airlock chamber (63). The upper insert plate drive (622) drives the upper insert plate (621) to close, and the lower insert plate drive (624) drives the lower insert plate (623) to open, so that the waste enters the pyrolysis furnace.

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