Device for removing iron mass from evaporation crucible

Abstract

The present invention discloses a device for taking out iron lumps in an evaporation crucible, which relates to the technical field of object-taking manipulators. The device includes a hoisting frame, the hoisting frame is connected with a hoisting mechanism, a drill connecting shaft is rotatably installed on the hoisting frame, a self-tapping section is fixedly provided at the lower end of the drill connecting shaft, and a drill connecting driver is installed between the drill connecting shaft and the hoisting frame; an auxiliary grasping cylinder is sleeved on the drill connecting shaft above the self-tapping section, and at least three circumferentially arranged auxiliary grasping teeth are fixedly provided on the auxiliary grasping cylinder, and the auxiliary grasping teeth are used for piercing into the iron lumps; a grasping cylinder supporting platform located below the auxiliary grasping cylinder and a grasping cylinder pressing platform located above the auxiliary grasping cylinder are fixedly provided on the drill connecting shaft, and a drill grasping interval is provided between the grasping cylinder pressing platform and the auxiliary grasping cylinder, and the drill grasping interval is used for enabling the grasping cylinder pressing platform to press the auxiliary grasping cylinder after the self-tapping section drills into the iron lumps. The present invention has low requirements for operation experience, the iron lumps are fixed firmly and reliably, the extraction is convenient, which is beneficial to improving the safety of taking iron and reducing the occurrence of crucible damage.

Description

Technical Field

[0001] The present invention relates to the technical field of material-taking manipulators, and particularly to a device for taking out iron masses in an evaporation crucible. Background Art

[0002] In the production of indirect zinc oxide, a melting crucible and an evaporation crucible are arranged in a kiln. In the melting crucible, zinc in the zinc-containing material is melted, and the molten zinc liquid is introduced into the evaporation crucible. In the evaporation crucible, the zinc liquid is continuously evaporated into zinc vapor in a high-temperature environment. As Figure 10 shown, the zinc vapor is ejected through the upper nozzle of the evaporation crucible; a chamber structure is covered at the upper nozzle of the evaporation crucible to form an oxidation chamber. The zinc vapor ejected from the upper nozzle undergoes an oxidation reaction when contacting air in the oxidation chamber to obtain zinc oxide microparticles. The zinc oxide microparticles are guided to a relevant collection device to obtain zinc oxide products.

[0003] Among them, as Figure 10 and Figure 11 shown, the evaporation crucible in the kiln is divided into a pot body and a pot lid. The pot body is located in the kiln and receives high-temperature heating. The position of the pot lid is sealed with refractory bricks to form the top wall of the kiln and play a role in isolating the kiln and the oxidation chamber. An upper nozzle is provided on the pot lid, and the zinc vapor continuously vaporized in the evaporation crucible is sprayed into the oxidation chamber through the upper nozzle. Considering raw material costs, at present, most of the production of indirect zinc oxide uses zinc-containing materials such as zinc slag as raw materials. These zinc-containing materials contain more iron impurities. During production, for the temperature of only about 1000 °C at the evaporation crucible, iron cannot reach the molten state (the melting point of iron is 1539 °C). Therefore, iron accumulates gradually in the evaporation crucible and forms a honeycomb-like iron mass state as Figure 10 and Figure 11 shown. The presence of the iron mass will reduce the zinc liquid capacity in the evaporation crucible, affect heat absorption and output quality. Therefore, after one production cycle of zinc oxide, it is necessary to stop the machine to clean it.

[0004] As Figure 11 shown, during cleaning, in order to remove the chamber structure of the oxidation chamber, the pot lid of the evaporation crucible is removed, and the iron mass is extracted from the pot body. However, because the iron mass is large in volume and heavy in weight and cannot be extracted manually, currently, mainly a steel wire rope is wound around the gap between the iron mass and the evaporation crucible, and then a forklift or other lifting equipment is used to lift it out. But this operation method has the following problems.

[0005] First, the gap between the iron mass and the evaporation crucible appears due to the cooling and shrinkage of the iron mass after the furnace is stopped. The maximum width of the gap is only 2 - 3 cm. Since the process of removing the iron mass is a one-time operation and it is impossible to perform secondary reinforcement operations during the extraction process, the requirement for winding the steel wire rope before extraction is very high. It must be able to stably lift the iron mass in one go. Limited by the above-mentioned narrow gap, this operation of winding the steel wire rope is very difficult. Even skilled workers can hardly guarantee the winding requirements. Therefore, the iron mass often falls during the extraction process. The relatively heavy iron mass will damage the crucible and pose a safety risk. After the crucible is damaged, it is necessary to remove the refractory brick partition layer before a new crucible can be replaced. After replacement, the refractory brick partition layer needs to be re-sealed with mud, which increases a lot of furnace dismantling work, increases the maintenance cost, and delays the production progress of the next cycle.

[0006] Second, after the furnace is stopped, although the iron mass has slight cooling and shrinkage, its bottom always remains in contact with the bottom of the evaporation crucible. Therefore, there is an adhesion situation between the bottom of the iron mass and the bottom of the evaporation crucible. Based on this, in the first step of tying the iron mass with the steel wire rope, it is not directly lifted. Instead, the steel wire rope is first shaken to disconnect the adhesion between the bottom of the iron mass and the bottom of the evaporation crucible, and then the extraction operation can be realized. The above-mentioned shaking operation cannot be done manually. It can only be completed by skilled workers operating a forklift or other lifting equipment for lifting the iron. The operation difficulty is relatively large and the requirement for manual experience is high.

[0007] Therefore, in combination with the above problems, a more excellent method for removing the iron mass needs to be provided. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide an iron mass removal device in an evaporation crucible that has low requirements for operation experience, can firmly and reliably fix the iron mass, is convenient for extraction, and is beneficial to improving the safety of iron mass removal and reducing the occurrence of crucible damage.

[0009] To solve the above technical problems, the technical solution of the present invention is: an iron mass removal device in an evaporation crucible, including a lifting frame, the lifting frame is connected with a lifting mechanism, a drilling connecting shaft is rotatably installed on the lifting frame, a self-tapping section is fixedly provided at the lower end of the drilling connecting shaft, and a drilling connecting driver is installed between the drilling connecting shaft and the lifting frame; an auxiliary grasping cylinder is sleeved on the drilling connecting shaft above the self-tapping section, and at least three circumferentially arranged auxiliary grasping teeth are fixedly provided on the auxiliary grasping cylinder, and the auxiliary grasping teeth are used for piercing into the iron mass; a grasping cylinder support platform is fixedly provided on the drilling connecting shaft below the auxiliary grasping cylinder and a grasping cylinder pressing platform is fixedly provided above the auxiliary grasping cylinder, and a drilling and grasping interval is provided between the grasping cylinder pressing platform and the auxiliary grasping cylinder, and the drilling and grasping interval is used for pressing the auxiliary grasping cylinder after the self-tapping section drills into the iron mass.

[0010] As a preferred technical solution, the piercing end of the auxiliary catching tooth is higher than the bottom end of the self-tapping section.

[0011] As a preferred technical solution, the auxiliary catching teeth are arranged in a spiral shape around the drill connecting shaft.

[0012] As a preferred technical solution, the spiral direction of the auxiliary catching teeth is set to be the same as the spiral direction of the spiral blades on the self-tapping section.

[0013] As a preferred technical solution, the self-tapping section includes a cylindrical section fixedly connected to the drill connecting shaft, a conical section is fixedly provided at the lower end of the cylindrical section, and continuous self-tapping spiral blades are provided on the cylindrical section and the conical section; the heights of the self-tapping spiral blades at the cylindrical section are set to be equal, and the heights of the self-tapping spiral blades at the conical section gradually decrease from top to bottom.

[0014] As a preferred technical solution, the auxiliary catching cylinder includes two catching half-cylinders arranged oppositely, assembly ear plates are respectively fixedly provided at the corresponding side edges of the two catching half-cylinders, and the corresponding assembly ear plates are fixedly connected by bolts.

[0015] As a preferred technical solution, when the drill connecting driver drives the drill connecting shaft to rotate forward, the self-tapping section drills into the iron mass, and when the drill connecting driver drives the drill connecting shaft to rotate backward, the self-tapping section withdraws from the iron mass.

[0016] As a preferred technical solution, the lifting mechanism includes a horizontally arranged lifting guide rail, a traveling trolley is installed on the lifting guide rail, a lifting winch is fixedly installed on the traveling trolley, and the lifting frame is hung on the lifting chain belt of the lifting winch.

[0017] As a preferred technical solution, a shaking generator is installed on the lifting frame.

[0018] As a preferred technical solution, the shaking generator includes a shaking drive motor installed on the lifting frame, and an eccentric body is fixedly installed at the power end of the shaking drive motor.

[0019] Due to the adoption of the above technical solution, the device for removing iron masses in the evaporation crucible includes a lifting frame, the lifting frame is connected with a lifting mechanism, a drilling connecting shaft is rotatably installed on the lifting frame, a self-tapping section is fixedly arranged at the lower end of the drilling connecting shaft, and a drilling connecting driver is installed between the drilling connecting shaft and the lifting frame; an auxiliary grasping cylinder is sleeved on the drilling connecting shaft above the self-tapping section, and at least three circumferentially arranged auxiliary grasping teeth are fixedly arranged on the auxiliary grasping cylinder, and the auxiliary grasping teeth are used for piercing into the iron mass; a grasping cylinder supporting platform located below the auxiliary grasping cylinder and a grasping cylinder pressing platform located above the auxiliary grasping cylinder are fixedly arranged on the drilling connecting shaft, and a drilling and grasping interval is arranged between the grasping cylinder pressing platform and the auxiliary grasping cylinder, and the drilling and grasping interval is used for enabling the grasping cylinder pressing platform to press the auxiliary grasping cylinder after the self-tapping section drills into the iron mass. In the present invention, a strong bite is formed by drilling the self-tapping section into the iron mass, and during the drilling process, the auxiliary grasping cylinder forms a piercing type grasping around the self-tapping section, and the two jointly realize the stable and reliable fixation of the iron mass. Thus, by shaking the lifting frame, the bottom of the iron mass can be driven to separate from the bottom of the evaporation crucible, and the above multi-point connection also makes it not easy to cause the iron mass to crack during the shaking process. Finally, after lifting by the lifting mechanism, the iron mass can be directly lifted out, and the iron mass is lifted out smoothly and conveniently, which is beneficial to improving the safety of iron removal and reducing the occurrence of crucible damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following drawings are only intended to illustrate and explain the present invention schematically and do not limit the scope of the present invention. Among them:

[0021] Figure 1 is a schematic three-dimensional structure diagram of an embodiment of the present invention;

[0022] Figure 2 is a schematic three-dimensional structure diagram of the auxiliary grasping cylinder of an embodiment of the present invention;

[0023] Figure 3 is a schematic three-dimensional structure diagram of the drilling connecting shaft of an embodiment of the present invention;

[0024] Figure 4 is a schematic cross-sectional structure diagram of an embodiment of the present invention;

[0025] Figure 5 is Figure 4 a state diagram when the self-tapping section drills into contact with the auxiliary grasping teeth and the iron mass;

[0026] Figure 6 is Figure 5 a state diagram when the self-tapping section continues to drill until the grasping cylinder pressing platform presses against the auxiliary grasping cylinder;

[0027] Figure 7 is Figure 6 a state diagram when the auxiliary grasping teeth pierce into the iron mass after the self-tapping section continues to drill;

[0028] Figure 8 It is a state diagram showing that when the self-tapping section exits the iron mass, it drives the auxiliary grasping and engaging tooth to be pulled out;

[0029] Figure 9 It is Figure 8 a state diagram after both the self-tapping section and the auxiliary grasping and engaging tooth are separated from the iron mass;

[0030] Figure 10 It is a structural schematic diagram of an existing zinc oxide production kiln;

[0031] Figure 11 It is a schematic diagram when the existing zinc oxide production kiln stops firing to remove iron.

[0032] In the figure: 1 - lifting frame; 2 - lifting mechanism; 21 - lifting guide rail; 22 - traveling trolley; 23 - lifting winch; 24 - lifting chain belt; 3 - drilling coupling shaft; 31 - drilling coupling driver; 32 - grasping cylinder support platform; 33 - grasping cylinder pressing platform; 34 - drilling and grasping interval; 4 - self-tapping section; 41 - cylindrical section; 42 - conical section; 43 - self-tapping spiral blade; 5 - auxiliary grasping cylinder; 51 - auxiliary grasping and engaging tooth; 52 - grasping half cylinder; 53 - assembly ear plate; 6 - shaking generator; 61 - shaking driving motor; 62 - eccentric body; 9 - kiln; 91 - oxidation chamber; 92 - refractory brick partition layer; 93 - evaporation crucible; 94 - pot body; 95 - pot cover; 96 - upper nozzle; 97 - iron mass. Specific embodiments

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present invention are described by way of illustration. It is understood that those of ordinary skill in the art can recognize that, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the drawings and the description are illustrative in nature and not intended to limit the scope of protection of the claims.

[0034] Such as Figure 1As shown in the figure, the device for removing iron masses from an evaporation crucible includes a lifting frame 1, which is connected to a lifting mechanism 2. The lifting mechanism 2 is a mechanism that can lift or lower the lifting frame 1. Preferably, it is a mechanism that uses a chain belt such as a steel wire rope or a chain to hang the lifting frame 1. In this embodiment, the lifting mechanism 2 includes a horizontally arranged lifting guide rail 21. A traveling trolley 22 is installed on the lifting guide rail 21. A lifting winch 23 is fixedly installed on the traveling trolley 22. The lifting winch 23 is driven by a motor to rotate a winch wheel, so as to achieve the purpose of releasing or winding up the lifting chain belt 24. Conventionally, the lifting frame 1 is hung on the lifting chain belt 24 of the lifting winch 23. The structural principles of the above-mentioned traveling trolley 22 and the lifting winch 23 are easily obtained by those skilled in the art in combination with the prior art, and will not be elaborated here. By adopting the lifting mechanism 2 with the above-mentioned lifting guide rail 21 and traveling trolley 22 in this embodiment, it is easier to form a shared structure for the actual on-site situation where multiple furnaces are usually arranged in a zinc oxide production workshop, which is beneficial to simplifying the equipment layout.

[0035] As Figures 4 to 9 shown in the figure, a drill coupling shaft 3 is rotatably installed on the lifting frame 1. The drill coupling shaft 3 is rotatably installed by using at least two groups of bearings. And because the drill coupling shaft 3 is a force transmission structure between the lifting frame 1 and the iron mass 97 during the lifting process, at least one group of bearings that can better bear axial force should be included in its bearings, such as tapered roller bearings, thrust bearings, etc. This is easily obtained by those skilled in the art in combination with conventional technical means, and will not be elaborated here.

[0036] As Figures 3 to 9 shown in the figure, a self-tapping section 4 is fixedly provided at the lower end of the drill coupling shaft 3. A drill coupling driver 31 is installed between the drill coupling shaft 3 and the lifting frame 1. The self-tapping section 4 is a structure that can self-drill into the iron mass 97 through its own rotation and axial thrust. For this embodiment, its axial thrust mainly comes from the gravity of the upper lifting frame 1, drill coupling driver 31, drill coupling shaft 3 and other components. Conventionally, when the drill coupling driver 31 drives the drill coupling shaft 3 to rotate forward, the self-tapping section 4 drills into the iron mass 97. After drilling, the spiral blades on the self-tapping section 4 form an engagement with the iron mass 97 to achieve the connection effect after drilling. When the drill coupling driver 31 drives the drill coupling shaft 3 to rotate reversely, the self-tapping section 4 can withdraw from the iron mass 97 along the channel formed during drilling.

[0037] Conventionally, as Figure 2As shown, the self-tapping section 4 includes a cylindrical section 41 fixedly connected to the drill connecting shaft 3. At the lower end of the cylindrical section 41, a conical section 42 is fixedly provided. Continuous self-tapping spiral blades 43 are provided on the cylindrical section 41 and the conical section 42. Preferably, the heights of the self-tapping spiral blades 43 at the cylindrical section 41 are set to be equal, and the heights of the self-tapping spiral blades 43 at the conical section 42 are set to gradually decrease from top to bottom. The self-tapping spiral blades 43 with heights gradually decreasing from top to bottom can cooperate with the taper of the conical section 42 to achieve progressive self-tapping drilling. The equal height setting of the self-tapping spiral blades 43 at the cylindrical section 41 can, on the one hand, reduce the resistance during continuous drilling and is conducive to increasing the drilling depth. On the other hand, during the withdrawal process, when the catching cylinder support platform 32 of this embodiment re-abuts against the auxiliary catching cylinder 5, there is still a certain spiral connection length between the self-tapping section 4 and the iron mass 97, which prompts the auxiliary catching teeth 51 to be pulled outwards, facilitating the smoother separation of this embodiment from the iron mass 97; the functional principle will be elaborated uniformly below.

[0038] As Figure 1 , Figure 2 , and Figures 4 to 9 As shown, an auxiliary catching cylinder 5 is sleeved on the drill connecting shaft 3 above the self-tapping section 4. At least three circumferentially arranged auxiliary catching teeth 51 are fixedly provided on the auxiliary catching cylinder 5, and the auxiliary catching teeth 51 are used to penetrate into the iron mass 97. When the auxiliary catching teeth 51 penetrate into the iron mass 97, it is equivalent to forming an auxiliary catch around the self-tapping section 4 in the middle, and the two together form a multi-point connection, making the fixation of the iron mass 97 firm and reliable.

[0039] As Figures 4 to 9 As shown, a catching cylinder support platform 32 located below the auxiliary catching cylinder 5 and a catching cylinder pressing platform 33 located above the auxiliary catching cylinder 5 are fixedly provided on the drill connecting shaft 3. The catching cylinder support platform 32 has two functions. One is to support the auxiliary catching cylinder 5 when not in use usually. The other is to play a role in lifting the auxiliary catching cylinder 5 during the process of the self-tapping section 4 withdrawing from the iron mass 97, facilitating the auxiliary catching teeth 51 to be pulled out of the iron mass 97 and being conducive to the smooth separation of this embodiment from the iron mass 97. The main function of the catching cylinder pressing platform 33 is to press down the auxiliary catching cylinder 5 by using the drilling force of the self-tapping section 4 when the self-tapping section 4 drills to a certain depth and presses against the auxiliary catching cylinder 5, so as to prompt the auxiliary catching teeth 51 to penetrate into the iron mass 97.

[0040] Based on the fact that boss structures are provided on both the upper and lower sides of the auxiliary catching cylinder 5 on the drill connecting shaft 3, as Figure 2As shown, the auxiliary grasping cylinder 5 in this embodiment includes two grasping semi-cylinders 52 arranged opposite to each other. Assembly ear plates 53 are respectively and fixedly provided at the corresponding side edges of the two grasping semi-cylinders 52, and the corresponding assembly ear plates 53 are fixedly connected by bolts. That is, the auxiliary grasping cylinder 5 is sleeved on the drilling connection shaft 3 in a way of assembling and combining. Of course, when a frame body needs to be fixedly arranged on the auxiliary grasping cylinder 5 to arrange the auxiliary grasping teeth 51, the frame body also correspondingly has a split structure and is fixedly connected by bolts.

[0041] Preferably, as Figure 4 shown, the piercing end of the auxiliary grasping tooth 51 is higher than the bottom end of the self-tapping section 4. This setting is for two reasons. First, when initial positioning, the auxiliary grasping tooth 51 does not affect the alignment of the self-tapping section 4. Second, during the drilling connection process, before the auxiliary grasping tooth 51 pierces, the self-tapping section 4 can drill into a greater depth, which is beneficial to providing a stronger piercing force for the auxiliary grasping tooth 51.

[0042] Preferably, as Figure 1 、 Figure 2 、and Figures 4 to 9 shown, the auxiliary grasping teeth 51 are arranged in a spiral shape around the drilling connection shaft 3, so as to generate a better grasping force during the process of extracting the iron mass 97 while being beneficial to piercing the iron mass 97. Preferably, the spiral direction of the auxiliary grasping teeth 51 is set to be the same as the spiral direction of the spiral blades on the self-tapping section 4, so that the pressing platform 33 of the grasping cylinder can provide a frictional effect in the same direction for the auxiliary grasping teeth 51 during drilling, further promoting the smooth piercing of the auxiliary grasping teeth 51 into the iron mass 97.

[0043] Preferably, as Figure 5 shown, a drilling and grasping interval 34 is provided between the pressing platform 33 of the grasping cylinder and the auxiliary grasping cylinder 5. The drilling and grasping interval 34 is used to enable the pressing platform 33 of the grasping cylinder to press the auxiliary grasping cylinder 5 after the self-tapping section 4 drills into the iron mass 97. The functional principle of this will be elaborated in detail later and will not be repeated here.

[0044] Preferably, as Figure 1 and Figures 4 to 9 shown, a shaking generator 6 is installed on the lifting frame 1 to, after being connected to the iron mass 97 in this embodiment, cause detachment between the bottom of the iron mass 97 and the bottom of the evaporation crucible 93 by generating shaking. The shaking generator 6 in this embodiment includes a shaking drive motor 61 installed on the lifting frame 1, and an eccentric body 62 is fixedly installed at the power end of the shaking drive motor 61. When the shaking drive motor 61 drives the eccentric body 62 to rotate, the centrifugal action of the eccentric body 62 causes the above-mentioned shaking.

[0045] The usage method of this embodiment is as follows.

[0046] After stopping the furnace, removing the oxidation chamber 91 and removing the pot cover 95 of the evaporation crucible 93, the traveling trolley 22 is operated to travel on the lifting rail 21 until the traveling frame is directly above the pot body 94. The lifting winch 23 is operated to release the lifting chain 24, and the lifting frame 1 is lowered until the bottom end of the self-tapping section 4 abuts against the iron mass 97 in the evaporation crucible 93 and then stops. Figure 4 As shown. It should be noted here that the position of the self-tapping section 4 against the iron ball 97 should be as close to the top center of the iron ball 97 as possible, so that the surrounding auxiliary grasping teeth 51 can have a better grasping force with the iron ball 97 after the subsequent penetration of the iron ball 97. If necessary, when the bottom end of the self-tapping section 4 is close to the iron ball 97, manual auxiliary adjustment is performed to make the bottom end of the self-tapping section 4 as close to the top center of the iron ball 97 as possible. For the multi-furnace arrangement of the zinc oxide production workshop, its evaporation crucible 93 is basically below the guide path of the lifting guide rail 21, so basically no adjustment is required, and even if there is an adjustment amount, the adjustment amount is very small.

[0047] The drilling connection driver 31 is turned on, the drilling connection shaft 3 and the self-drilling section 4 rotate, and the lifting winch 23 is operated to continue to release the lifting chain 24, so that there is no pulling force between the lifting frame 1 and the lifting winch 23, and the self-drilling section 4 starts to drill under the gravity of the upper component. The drilling connection driver 31 adopts low-speed and high-torque output to achieve effective drilling in the honeycomb iron mass 97, which can be achieved by a high-power motor with a multi-stage and high-ratio planetary gear reducer. This is easily obtained by those skilled in the art in combination with conventional technical means and will not be repeated here. In this process, if necessary, the lifting frame 1 is manually assisted to ensure that the self-drilling section 4 is drilled in a basically vertical direction; after the cylindrical section 41 in the self-drilling section 4 is drilled into the iron mass 97, the self-drilling section 4 can be directionally drilled, and manual assistance can be released.

[0048] During the drilling process of the self-drilling section 4, initially Figure 4 As shown, the auxiliary grasping teeth 51 do not contact the iron ball 97. Based on the sleeve between the auxiliary grasping tube 5 and the drill coupling shaft 3, the auxiliary grasping tube 5 does not rotate, or rotates slightly due to the friction between the grasping tube support 32. After the self-drilling section 4 is drilled deep enough to the insertion end of the auxiliary grasping teeth 51 to contact the iron ball 97, as shown in FIG. Figure 5 As shown, the auxiliary grasping tube 5 no longer rotates. And blocked by the iron mass 97, the auxiliary grasping tube 5 also no longer continues to move downward with the drilling shaft 3. At this time, the setting of the drilling grasping interval 34 in this embodiment can make the grasping tube pressing platform 33 contact the upper end of the auxiliary grasping tube 5 only after the self-drilling section 4 continues to drill into the depth of the drilling grasping interval 34, as shown in FIG. Figure 6As shown in the figure. At this time, under the action of the drilling force of the self-tapping section 4, the pressing platform 33 of the grasping cylinder generates a downward force on the auxiliary grasping cylinder 5, and the auxiliary grasping teeth 51 start to penetrate into the iron mass 97 under this downward force. The greater drilling depth of the self-tapping section 4 makes the stronger biting force generated between its self-tapping spiral blades 43 and the iron mass 97, which can prompt the auxiliary grasping teeth 51 to produce a reliable penetration effect. Based on the fact that the auxiliary grasping teeth 51 themselves are spiral-shaped and the spiral direction is the same as that of the blades on the self-tapping section 4, there is also a frictional force in the same direction between the pressing platform 33 of the grasping cylinder and the auxiliary grasping cylinder 5. The resultant force direction of this frictional force and its downward force is closer to the spiral direction of the auxiliary grasping teeth 51, so it can prompt the auxiliary grasping teeth 51 to penetrate more smoothly.

[0049] After the auxiliary grasping teeth 51 penetrate to the required depth, as Figure 7 shown in the figure, operate the drill connection driver 31 to stop, and the hoisting winch 23 stops releasing the hoisting chain belt 24. Of course, when the release speed of the hoisting chain belt 24 by the hoisting winch 23 is greater than the drilling speed of the self-tapping section 4, it can stop in advance as long as the released hoisting chain belt 24 does not affect the drilling operation. Based on the fact that the upper surface of the iron mass 97 in the evaporation crucible 93 is mostly an uneven surface, a plurality of auxiliary grasping teeth 51 are provided on the auxiliary grasping cylinder 5 in this embodiment, which can ensure that at least one can complete the penetration action, and in the case of at least one penetrating into the iron mass 97, it can play an auxiliary grasping role for the self-tapping section 4. In this case, a stable connection state of high-strength biting of the middle self-tapping spiral blades 43 and at least one point of penetration and grasping at the periphery is formed between the drill connection shaft 3 and the iron mass 97 in this embodiment.

[0050] Start the shaking generator 6 to generate a shaking drive until the iron mass 97 also starts to shake and then stop. During this process, the shaking drive motor 61 can be controlled to perform intermittent driving, such as pressing the relevant control switch, so that the shaking drive motor 61 drives the eccentric body 62 to rotate about one week at a time. With this intermittent driving, the adhesion between the bottom of the iron mass 97 and the bottom of the evaporation crucible 93 is gradually separated, and the operator can easily and timely judge the separation of the adhesion between the iron mass 97 and the evaporation crucible 93, avoiding the situation that the iron mass 97 hits the side wall of the evaporation crucible 93 due to excessive shaking. During this process, the auxiliary grasping role of the auxiliary grasping teeth 51 and the multi-point connection formed by the strong biting of the middle self-tapping section 4 can avoid the situation of splitting and drilling between the self-tapping section 4 and the iron mass 97, ensuring a stable and reliable connection between this embodiment and the iron mass 97.

[0051] After the bottom of the iron mass 97 is separated from the bottom of the evaporation crucible 93, stop operating the shaking generator 6. Operate the hoisting winch 23 to wind up the hoisting chain belt 24, and the drill coupling shaft 3 can drive the iron mass 97 to rise, realizing the removal of the iron mass 97. During the removal process, based on the cleaning and biting of the middle self-tapping section 4 and the auxiliary grasping action of the auxiliary grasping teeth 51, the removal is smooth and convenient, and it is not easy to have an accident of dropping the iron.

[0052] After removal, operate the traveling trolley 22 to leave directly above the evaporation crucible 93 and reach other empty positions beside the kiln 9. Operate the hoisting winch 23 to release the hoisting chain belt 24 until it stops when the iron mass 97 touches the ground. Operate the drill coupling driver 31 to reverse, and the self-tapping section 4 starts to withdraw from the iron mass 97 along the drilled channel. At the beginning of the withdrawal, since the auxiliary grasping cylinder 5 and the drill coupling shaft 3 are sleeved, the auxiliary grasping cylinder 5 does not move, and the drill coupling shaft 3 gradually rises until the grasping cylinder support platform 32 re-supports under the lower part of the auxiliary grasping cylinder 5, as Figure 8 shown. At this time, there is still a certain length of spiral blade biting between the self-tapping section 4 and the iron mass 97, so an upward jacking force can be provided. This kind of jacking force can drive the auxiliary grasping teeth 51 to withdraw from the iron mass 97. Similarly, at this time, the frictional force generated between the grasping cylinder support platform 32 and the auxiliary grasping cylinder 5 can, together with the jacking force, generate a resultant force close to the spiral direction of the auxiliary grasping teeth 51, which can further promote the auxiliary grasping teeth 51 to withdraw from the iron mass 97. During the process of the self-tapping section 4 withdrawing, operate the hoisting winch 23 to wind up a certain length of the hoisting chain belt 24. When the winding operation ensures not to pull the hoisting frame 1, keep the hoisting chain belt 24 in a state with basically no excessive surplus length. After the self-tapping section 4 completely withdraws from the iron mass 97, as Figure 9 shown, the auxiliary grasping teeth 51 have also withdrawn or basically withdrawn from the iron mass 97. At this time, this embodiment changes to the state where the hoisting chain belt 24 immediately holds the hoisting frame 1 and its upper components. Stop the drill coupling driver 31 and continuously lift the hoisting frame 1 to complete the operation of removing one iron mass 97.

[0053] Based on the above structural principle, during the entire process of removing the iron mass 97, only the relevant drives need to be manipulated. Manual labor only generates a small amount of assistance actions at the initial stage of drilling, and the requirement for operation experience is low. After drilling, there are multiple-point connection fixations including the strong biting of the central self-tapping section 4 and the grasping of the peripheral auxiliary grasping teeth 51. The iron mass 97 is fixed stably and reliably, and can be shaken smoothly, which prompts the bottom of the iron mass 97 to break away from the adhesion with the bottom of the evaporation crucible 93. The lifting process is also smooth and convenient, which is conducive to improving the safety of iron removal and reducing the occurrence of crucible damage. After being proposed, by rotating the self-tapping section 4 in the reverse direction, the self-tapping section 4 can be automatically withdrawn from the iron mass 97 and the auxiliary grasping teeth 51 can be pulled out, and the connection and fixation between this embodiment and the iron mass 97 can also be easily released. Based on the honeycomb structure characteristics of the iron mass 97, this embodiment proposes a connection and fixation method of drilling and stabbing cooperation to achieve the stable removal of the iron mass 97, significantly reducing the human participation, improving the mechanization degree of the iron mass 97 removal, and being conducive to improving the efficiency of furnace shutdown maintenance.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A device for removing iron balls from an evaporating crucible, comprising a lifting frame, wherein the lifting frame is connected to a lifting mechanism, and is characterized in that: A drill coupling shaft is rotatably mounted on the lifting frame, a self-tapping section is fixedly mounted on the lower end of the drill coupling shaft, and a drill coupling driver is mounted between the drill coupling shaft and the lifting frame; an auxiliary grasping tube is sleeved on the upper side of the self-tapping section on the drill coupling shaft, and at least three circumferentially arranged auxiliary grasping teeth are fixedly mounted on the auxiliary grasping tube, and the auxiliary grasping teeth are used to penetrate into the iron ball; a grasping tube support platform located on the lower side of the auxiliary grasping tube and a grasping tube pressing platform located on the upper side of the auxiliary grasping tube are fixedly mounted on the drill coupling shaft, a drill grasping interval is arranged between the grasping tube pressing platform and the auxiliary grasping tube, and the drill grasping interval is used to enable the grasping tube pressing platform to press the auxiliary grasping tube after the self-tapping section drills into the iron ball; After the self-tapping section drills deep enough that the insertion end of the auxiliary grasping tooth contacts the iron ball, the auxiliary grasping tube no longer rotates and is hindered by the iron ball, and the auxiliary grasping tube no longer continues to descend with the drill coupling shaft; after the self-tapping section continues to drill into the depth of the drill grasping interval, the grasping tube pressure plate contacts the upper end of the auxiliary grasping tube; under the drilling force of the self-tapping section, the grasping tube pressure plate generates a force to press down the auxiliary grasping tube, and the auxiliary grasping tooth begins to penetrate the iron ball under the action of this downward pressure.

2. The device for removing iron balls from an evaporating crucible according to claim 1, characterized in that: The piercing end of the auxiliary grasping tooth is higher than the bottom end of the self-tapping section.

3. The device for removing iron balls from an evaporating crucible according to claim 1, characterized in that: The auxiliary grasping teeth are arranged in a spiral shape around the drill coupling shaft.

4. The device for removing iron balls from an evaporating crucible according to claim 3, characterized in that: The spiral direction of the auxiliary grasping teeth is arranged to be the same as the spiral direction of the spiral blades on the self-tapping section.

5. The device for removing iron balls from an evaporating crucible according to claim 1, characterized in that: The self-tapping section includes a cylindrical section fixedly connected to the drill shaft, a conical section is fixedly provided at the lower end of the cylindrical section, and continuous self-tapping spiral blades are provided on the cylindrical section and the conical section; the heights of the self-tapping spiral blades at the cylindrical section are set equally, and the heights of the self-tapping spiral blades at the conical section are set to gradually decrease from top to bottom.

6. The device for removing iron balls from an evaporating crucible according to claim 1, characterized in that: The auxiliary grasping cylinder comprises two grasping half cylinders arranged opposite to each other, and assembling ear plates are fixedly provided at corresponding side edges of the two grasping half cylinders, and the corresponding assembling ear plates are fixedly connected by bolts.

7. The device for removing iron balls from an evaporating crucible according to claim 1, characterized in that: When the drill coupling driver drives the drill coupling shaft to rotate forward, the self-tapping section drills into the iron ball. When the drill coupling driver drives the drill coupling shaft to rotate reversely, the self-tapping section exits the iron ball.

8. The device for removing iron balls from an evaporating crucible according to claim 1, characterized in that: The lifting mechanism comprises a lifting guide rail arranged transversely, a traveling trolley is installed on the lifting guide rail, a lifting winch is fixedly installed on the traveling trolley, and the lifting frame is suspended on the lifting chain belt of the lifting winch.

9. The device for removing iron balls from an evaporating crucible according to any one of claims 1 to 8, characterized in that: A sway generator is installed on the lifting frame.

10. The device for removing iron balls from an evaporating crucible according to claim 9, characterized in that: The sway generator comprises a sway drive motor mounted on the lifting frame, and an eccentric body is fixedly mounted on the power end of the sway drive motor.

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