A heat treatment apparatus for a liner plate

Abstract

The application provides a kind of lining heat treatment equipment, belongs to lining processing technical field, including trolley and hoist furnace body by support, the upper end of the trolley is provided with cavity, the inside bottom surface of the cavity is provided with support column in array, the upper end of the support column is fixedly connected with backing plate, the upper surface of the backing plate is provided with refractory pad for placing lining;The inside of the cavity is vertically slidingly connected with sealing frame, the outside of the sealing frame is provided with gas groove, the bottom surface edge of sealing frame is uniformly provided with gas hole communicated with gas groove, the inside bottom surface edge of the cavity is uniformly provided with T-shaped rod;The upper end edge of the trolley is provided with groove, and the step surface at the opening of the upper end of the groove is provided with sealing pad;The application can solve the problem of sealing failure caused by debris, and prolong the service life of sealing pad by flexible support, greatly improve the sealing between furnace body and trolley.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of lining plate processing, and particularly relates to a lining plate heat treatment equipment. BACKGROUND

[0002] In the field of grinding and crushing equipment, the lining plate is a core protection component, which can effectively protect the equipment body from working condition damage due to its wear resistance and impact resistance; from the manufacturing process, the lining plate is usually formed by casting, and then specific heat treatment is carried out according to the material properties of the lining plate. Only through this process, the lining plate can meet the severe working condition requirements of impact, wear and corrosion in the equipment, and ensure its service performance.

[0003] In the industrial equipment relied on lining plate heat treatment, the car bottom furnace is the most commonly used periodic large heating equipment; its core feature is that the movable car is equipped, which can realize the convenient loading and unloading of large, heavy or batch workpieces, and is suitable for the whole process heat treatment process such as annealing, normalizing, quenching, tempering and aging required by the lining plate; from the structure composition, the car bottom furnace is mainly composed of five parts of furnace body, car, furnace door and sealing device, temperature control and electric control system and auxiliary system, and the functions of various components are coordinated to ensure the stability of heat treatment quality.

[0004] However, the existing car bottom furnace has a significant defect in the sealing performance: the sealing door needs to slide up and down along the inner wall surface of the support seat to realize opening and closing, and this sliding mode is easy to cause the surface wear of the sealing door; as the wear intensifies, gaps will be generated at the connection between the sealing door and the support seat, which causes the furnace body to be unable to form effective sealing, and further causes the heat gas in the furnace to escape, directly affecting the stability of the heat treatment temperature.

[0005] In view of the sealing problem of the sealing door and the furnace body, an improvement scheme has been proposed in the prior art, referring to the Chinese patent file with the publication number CN117265231B and the name of a heat treatment equipment, which comprises a furnace body and a metal sliding rail, the inner wall surface of the metal sliding rail is movably connected with a casting heat treatment bearing table, the front surface of the furnace body is fixedly connected with a sealing mechanism, and the metal sliding rail is fixedly connected to the bottom end surface of the furnace body. The scheme is provided with a support seat, a pushing assembly and a sealing door, and the pushing assembly can push the sealing door to move forward and backward when in use, so that the sealing door is inserted into the front end of the tempering furnace, thereby making up for the problem of sealing failure caused by the wear of the sealing door.

[0006] With reference to the above technical solution, although the sealing between the sealing door and the furnace body can be improved by moving the sealing door, the trolley is prone to deformation in long-term use due to the structure of the trolley track itself, and the track is also prone to wear, which reduces the fit between the sealing door and the bottom track, and further reduces the sealing effect at the bottom. In the prior art, the furnace body is designed as a cover type structure that can move up and down, the cover type furnace body directly abuts against the upper surface of the trolley, and a ceramic fiber gasket is arranged on the contact surface to realize the sealing between the furnace body and the trolley by means of the gasket, so as to improve the overall sealing of the equipment. However, when the cover type furnace body of this structure is used, the ceramic fiber gasket is directly exposed to the external environment, and during the heat treatment process of the lining plate, the oxide scale debris falling from the surface of the workpiece is prone to fall and accumulate on the gasket. If these debris are not cleaned in time, the gasket will be damaged due to the pressure of the furnace body during subsequent use, which reduces the sealing between the furnace body and the trolley and cannot guarantee the heat treatment effect for a long time. SUMMARY

[0007] Therefore, the present application provides a lining plate heat treatment equipment to solve the problem of reduced sealing between the furnace body and the trolley due to damage to the gasket.

[0008] To solve the above technical problems, the present application provides a lining plate heat treatment equipment, which comprises a trolley and a furnace body hoisted by a support, wherein the upper end of the trolley is provided with a cavity, the inner bottom surface of the cavity is provided with support columns in an array, the upper ends of the support columns are fixedly connected with backing plates, and the upper surfaces of the backing plates are provided with refractory pads for placing lining plates; a sealing frame is vertically and slidingly connected inside the cavity, the outer side of the sealing frame is provided with air grooves, the bottom surface edges of the sealing frame are uniformly provided with air holes in communication with the air grooves, the inner bottom surface edges of the cavity are uniformly provided with T-shaped rods, and the T-shaped rods are respectively located inside the axially corresponding air holes; the upper end edges of the trolley are provided with grooves, the sealing gaskets are arranged on the stepped surfaces of the upper end openings of the grooves, and the bottom surface edges of the furnace body are provided with sealing strips capable of abutting against the sealing gaskets.

[0009] By adopting the technical scheme, the support column can stably support the cushion plate, and ensure the flatness of the lining plate placed on the refractory cushion block; the vertical sliding fit of the sealing frame and the cavity provides a structural basis for subsequent regulation of the cavity pressure by moving the sealing frame downward; the axial corresponding design of the T-shaped rod and the air hole can control the communication and closed state of the air groove and the cavity through the relative displacement of the T-shaped rod in the air hole during the downward movement of the sealing frame, thereby realizing dynamic regulation of the cavity pressure; the abutting fit of the furnace body bottom surface sealing strip and the sealing pad can realize the sealing of the furnace body and the trolley, and through the relative displacement of the T-shaped rod and the air hole, the sealing pad can be deformed twice, which is beneficial to the discharge of the debris on the upper end of the sealing pad, can complete the cleaning of the sealing pad before the abutting of the sealing strip and the sealing pad, avoids the damage of the sealing pad due to the surface debris, fundamentally solves the problem of reduced sealing performance, and improves the sealing performance of the furnace body and the trolley through the flexible support of the sealing pad.

[0010] Optionally, a rubber pad is arranged in the groove, the rubber pad can abut against the sealing pad, and the opening at the bottom of the groove is in communication with the bottom of the cavity.

[0011] By adopting the technical scheme, the pressure change in the cavity can directly act on the rubber pad, when the cavity is initially compressed due to the downward movement of the sealing frame, the pressure is transmitted to the rubber pad through the opening, the rubber pad is deformed upward and pushes up the sealing pad, the middle part of the sealing pad is bulged, and the surface debris is facilitated to be separated; when the cavity is compressed again, the rubber pad is further deformed and continuously abuts against the sealing pad, forming a flexible support, avoiding damage of the sealing pad due to rigid contact when the furnace body sealing strip is pressed downward, and the elastic deformation of the rubber pad can fill the small gap between the sealing pad and the stepped surface of the groove, further improving the sealing reliability.

[0012] Optionally, a slope is arranged at the upper end edge of the sealing frame, and a chamfer matched with the slope is arranged at the inner edge of the bottom surface of the furnace body.

[0013] By adopting the technical scheme, during the downward movement of the furnace body, the inner chamfer of the bottom surface of the furnace body and the slope at the upper end of the sealing frame can form an automatic positioning and guiding structure: if the furnace body moves downward with slight deviation, the chamfer and the slope of the slope will produce a lateral correction force, pushing the furnace body to adjust the position, ensuring that the furnace body moves accurately to the above of the trolley, and improving the precision of the cooperation between the furnace body and the trolley.

[0014] Optionally, a stepped sleeve is uniformly arranged in the middle part of the sealing frame, the upper end of the stepped sleeve can abut against the bottom surface of the cushion plate, the stepped sleeve is slidably connected with the axially corresponding support column, the lower end of the support column is sleeved with a first spring, the upper end of the first spring abuts against the bottom surface of the axially corresponding stepped sleeve, and the lower end of the first spring abuts against the inner bottom surface of the cavity.

[0015] By adopting the technical scheme, the sliding fit of the stepped sleeve and the support column provides guidance for the vertical movement of the sealing frame, the first spring is used to push the stepped sleeve and the sealing frame to reset, and the abutment of the upper end of the stepped sleeve and the bottom surface of the backing plate can limit the reset position of the sealing frame, thereby playing a positioning role on the initial position of the sealing frame.

[0016] Optionally, the opening of the cavity bottom is provided with an array of fans, the outer side of the support column is circumferentially provided with an array of flow channels, the upper end of the stepped sleeve is uniformly provided with an opening for gas passing, and a gap for gas passing is left between the outer side edge of the backing plate and the inner wall of the sealing frame.

[0017] By adopting the technical scheme, the fan is used to cool the heat-treated lining plate, the cold zone gas is diffused outward through the flow channel, the opening at the upper end of the stepped sleeve, and the gap between the backing plate and the sealing frame, thereby achieving uniform cooling of the lining plate from the inside to the outside, and avoiding the excessive temperature difference between the surface and the inside of the lining plate caused by traditional external air blowing, which affects the heat treatment effect of the lining plate.

[0018] Optionally, the inner wall of the stepped sleeve is provided with a sealing ring, thereby improving the sliding sealing property of the stepped sleeve and the support column.

[0019] Optionally, the bottom surface of the sealing frame is provided with a pull rod, the bottom of the pull rod is slidably connected with a sealing plate, the sealing plate can seal the opening of the cavity bottom, the upper end of the two pull rods is sleeved with a second spring, the upper end of the second spring is in abutment with the bottom surface of the sealing frame, and the lower end of the second spring is in abutment with the sealing plate.

[0020] By adopting the technical scheme, when the sealing frame moves downward, the sealing plate moves downward synchronously with the sealing frame under the action of the second spring, until the sealing plate cooperates with the opening of the cavity bottom and forms a seal, thereby realizing the sealing of the cavity bottom, after the heat treatment is completed, the sealing frame moves upward to drive the pull rod, the second spring releases the elastic force to push the sealing plate away from the opening of the cavity bottom, thereby releasing the sealing state, so that the external air can enter the cavity to provide an airflow channel for the fan to draw air for cooling, and the automatic sealing and opening of the sealing plate are realized through the displacement of the sealing frame, thereby simplifying the structure and ensuring the smooth connection of the sealing and cooling processes of the cavity.

[0021] Optionally, the middle part of the backing plate is uniformly provided with a strip-shaped opening for gas passing, and the strip-shaped opening is located at the gap of the refractory pad.

[0022] By adopting the technical scheme, the path of the airflow acting on the lining plate is optimized, so that the lining plate can be contacted by cold air at each part, the local high-temperature area caused by the stacking of the lining plate is effectively eliminated, the internal stress of the lining plate caused by uneven cooling is reduced, and the risk of deformation is reduced.

[0023] Optionally, the upper end of the support is provided with a driving member for driving the furnace body to move up and down, the driving member provides stable up and down movement power for the furnace body, and the up and down movement of the furnace body can be accurately controlled.

[0024] Optionally, the inside of the support is provided with two guide rails, and the left and right sides of the furnace body are each provided with two guide columns capable of cooperating with the guide rails.

[0025] Through the above technical scheme, the sliding cooperation of the guide rail and the guide column provides bidirectional limiting for the up and down movement of the furnace body, and avoids left and right shaking of the furnace body in the movement process due to gravity or air flow influence.

[0026] In summary, compared with the prior art, the present application has the following beneficial technical effects:

[0027] 1. The air in the cavity at the upper end of the trolley is compressed by the downward movement of the sealing frame, thereby realizing multi-link cooperation; the initial compression pressure pushes up the rubber pad to lift the sealing pad, which is beneficial to the separation of debris on the surface of the sealing pad, and then the high-pressure gas is blown through the gas groove to complete the accurate cleaning of the sealing pad; when the gas is compressed again, the rubber pad forms a flexible support, avoiding the rigid extrusion of the furnace body sealing strip on the sealing pad, which not only solves the problem of sealing failure caused by debris, but also prolongs the service life of the sealing pad through flexible support, greatly improving the sealing performance between the furnace body and the trolley.

[0028] 2. The cold air introduced by the fan passes through the cavity, the flow channel, the opening on the stepped sleeve, and finally uniformly spreads into the gap between the lining plate stacks through the strip-shaped port, forming a three-dimensional cooling effect from the inside out, which is more uniform and accurate in controlling the cooling temperature of the lining plate, significantly reducing the internal stress of the lining plate caused by temperature difference and the probability of deformation of the lining plate caused by uneven cooling; at the same time, the airflow can carry away the residual high temperature inside the cavity during the flow process, slow down the aging rate of the components caused by high temperature, and indirectly improve the overall service life of the sealing system.

[0029] 3. During the downward movement of the furnace body, the chamfer of the inner wall of the furnace body cooperates with the inclined surface at the upper end of the sealing frame, which can position and guide the downward movement of the furnace body, improve the cooperation precision of the furnace body and the trolley, and form a hard seal on the cooperation surface of the furnace body and the trolley, laying a foundation for subsequent sealing effect guarantee. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a lining plate heat treatment equipment of the present application;

[0031] Figure 2 It is a front cross-sectional structural schematic diagram of the present application;

[0032] Figure 3 It is a cross-sectional structural schematic diagram of the inside of the trolley of the present application;

[0033] Figure 4 Structure diagram of the trolley and the furnace body cooperation of the present application;

[0034] Figure 5 Structure diagram of the trolley and the furnace body cooperation of the present application; Figure 4 Structure diagram of the trolley and the furnace body cooperation of the present application;

[0035] Figure 6 Structure diagram of the trolley and the furnace body cooperation of the present application; Figure 4 Structure diagram of the trolley and the furnace body cooperation of the present application;

[0036] Figure 7 Structure diagram of the trolley and the furnace body cooperation of the present application;

[0037] Figure 8 Structure diagram of the trolley and the furnace body cooperation of the present application;

[0038] Explanation of reference signs: 1, trolley; 101, cavity; 102, support column; 103, pad; 104, refractory pad; 105, flow channel; 106, strip-shaped port; 2, bracket; 21, furnace body; 211, guide column; 212, sealing strip; 22, driving member; 23, guide rail; 3, sealing frame; 31, air groove; 32, air hole; 33, inclined surface; 4, T-shaped rod; 5, groove; 51, sealing gasket; 52, rubber pad; 6, step sleeve; 61, opening; 62, sealing ring; 7, first spring; 8, fan; 9, pull rod; 91, sealing plate; 92, second spring. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application. Figures 1-8

[0040] Reference is made to Figure 1 , Figure 2 and Figure 3 ​The embodiment provides a lining heat treatment equipment, which comprises a support 2, a trolley 1, a cleaning mechanism and a cooling mechanism. The trolley 1 can move along an external track, and the upper end of the trolley 1 is provided with a cavity 101. The inner bottom surface of the cavity 101 is provided with support columns 102 in an array. The upper ends of the support columns 102 are fixedly connected with backing plates 103. The upper surfaces of the backing plates 103 are provided with refractory pads 104 for placing lining plates. The inside of the support 2 is provided with a driving piece 22. The driving piece 22 is fixedly connected with a furnace body 21 through two steel wires. The driving piece 22 can drive the furnace body 21 to move up and down through the steel wires, so that the bottom of the furnace body 21 abuts against the upper surface of the trolley 1. The inside of the support 2 is provided with two guide rails 23. The left and right side surfaces of the furnace body 21 are each provided with two guide columns 211 which can cooperate with the guide rails 23, so as to guide the movement of the furnace body 21.

[0041] The upper end edge of the trolley 1 is provided with a groove 5. The upper end opening of the groove 5 is provided with a sealing pad 51 on the stepped surface. The bottom edge of the furnace body 21 is provided with a sealing strip 212 which can abut against the sealing pad 51.

[0042] Referring to Figure 2 , Figure 3 , Figure 4 and Figure 5 , the cleaning mechanism comprises a sealing frame 3, a T-shaped rod 4 and a rubber pad 52. The sealing frame 3 is vertically and slidingly connected in the cavity 101. The middle part of the sealing frame 3 is uniformly provided with stepped sleeves 6. The upper ends of the stepped sleeves 6 can abut against the bottom surfaces of the backing plates 103. The stepped sleeves 6 are slidingly connected with the axially corresponding support columns 102. The inner walls of the stepped sleeves 6 are each provided with a sealing ring 62, so as to ensure the sliding sealing between the stepped sleeves 6 and the support columns 102. The lower ends of the support columns 102 are each sleeved with a first spring 7. The upper ends of the first springs 7 are respectively abutted against the bottom surfaces of the axially corresponding stepped sleeves 6. The lower ends of the first springs 7 are each abutted against the inner bottom surface of the cavity 101. The outer side of the sealing frame 3 is provided with an air groove 31. The bottom edge of the sealing frame 3 is uniformly provided with air holes 32 which are in communication with the air groove 31. The T-shaped rod 4 is arranged at the edge of the inner bottom surface of the cavity 101. The upper end of the T-shaped rod 4 is located in the axially corresponding air hole 32. The rubber pad 52 is arranged in the groove 5. The rubber pad 52 can abut against the sealing pad 51. The opening at the bottom of the groove 5 is in communication with the bottom of the cavity 101.

[0043] In use, first, the lining plates to be treated after casting are stably placed on the upper surfaces of the backing plates 103 on the refractory pads 104. After the lining plates are placed, the trolley 1 is accurately moved to the position directly below the furnace body 21 through cooperation with the external track. The guiding structure of the track can ensure the alignment accuracy of the trolley 1 and the furnace body 21, and lay a foundation for the subsequent inverted sealing of the furnace body 21.

[0044] Subsequently, the driving member 22 inside the support 2 is started, and the driving member 22 drives the furnace body 21 to move stably downward along the vertical direction by the steel wire until the furnace body 21 is inverted on the upper end of the trolley 1, so as to realize the preliminary alignment of the furnace body 21 and the trolley 1; when the lower edge surface of the furnace body 21 contacts the upper surface of the sealing frame 3 on the upper end of the trolley 1, with the continuous downward movement of the furnace body 21, the sealing frame 3 moves downward synchronously under the pressure of the lower edge surface of the furnace body 21; at this time, the T-shaped rod 4 in the cavity 101 is initially located at the bottom position of the air hole 32, and with the continuous downward movement of the sealing frame 3, the internal volume of the cavity 101 gradually decreases (the closed space formed by the sealing frame 3, the panel of the trolley 1 and the T-shaped rod 4), and the air in the cavity 101 is gradually compressed. Under the action of the compressed air, the rubber pad 52 in the groove 5 is elastically deformed, and the deformed rubber pad 52 forms a close abutment with the sealing gasket 51, and the deformation of the rubber pad 52 drives the middle part of the sealing gasket 51 to bulge upward, which is conducive to the separation of the debris on the surface of the sealing gasket 51 from the sealing surface, and creates conditions for subsequent thorough cleaning.

[0045] When the upper end of the T-shaped rod 4 moves to the upper end position of the air groove 31, the air groove 31 corresponds to the surface of the sealing gasket 51, and at this time the air groove 31 is connected with the inside of the cavity 101 through the gap between the T-shaped rod 4 and the air hole 32, so that the compressed air in the cavity 101 enters the air groove 31 through the air hole 32, and a high-pressure air flow is sprayed from the slot of the air groove 31 to the surface of the sealing gasket 51 (see Figure 5 ), Since the air groove 31 is uniformly distributed along the circumference of the sealing frame 3, the sprayed high-pressure air flow can fully cover the entire sealing surface of the sealing gasket 51, not only can the debris gathered on the surface of the sealing gasket 51 be blown away, but also the small impurities attached in the gap of the sealing gasket 51 can be removed, so as to eliminate the sealing hidden danger from the root and ensure that the sealing performance of the sealing gasket 51 is not affected by impurities; with the continuous downward movement of the sealing frame 3, the T-shaped rod 4 continues to move relative to the air groove 31 until the slot of the air groove 31 is completely blocked by the inner wall of the cavity 101, so that the air groove 31 forms a closed state with the inside of the cavity 101, at this time the sealing frame 3 continues to move downward, and the air in the cavity 101 is compressed again due to the decrease of the volume, and the compressed air continuously acts on the rubber pad 52, so that the rubber pad 52 maintains an elastic deformation state and maintains a close abutment with the sealing gasket 51 (see Figure 7), the flexible support formed on the sealing gasket 51 can not only avoid deformation damage of the sealing gasket 51 caused by long-term rigid extrusion, prolong the service life of the sealing gasket 51, but also compensate for the possible small concave-convex defects on the surface of the sealing gasket 51 through the self-adaptive deformation of the rubber pad 52, thereby improving the fit of the sealing gasket 51 and the lower edge surface of the furnace body 21. At the same time, the sealing strip 212 on the bottom surface of the furnace body 21 is in close abutment with the upper surface of the sealing gasket 51, and the cooperation of the two can not only effectively prevent the heat inside the furnace body 21 from being lost, thereby ensuring the stability of the temperature environment required for the treatment of the lining plate, but also prevent external air from entering the inside of the furnace body 21 to interfere with the atmosphere in the furnace, thereby finally realizing the stable sealing of the inside of the furnace body 21 and ensuring the process effect of the subsequent treatment of the lining plate.

[0046] When the sealing frame 3 moves downward, the first spring 7 is gradually compressed, and after the heat treatment is completed, the furnace body 21 moves upward to reset, and under the elastic force of the first spring 7, the sealing frame 3 is reset, and at the same time, the upper end of the step sleeve 6 is in abutment with the bottom surface of the pad 103, thereby limiting the position of the sealing frame 3.

[0047] Referring to Figure 3 , Figure 4 , Figure 6 and Figure 8 , the cooling mechanism includes a fan 8, a flow channel 105, a pull rod 9, and a sealing plate 91. The fan 8 is arrayed at the opening at the bottom of the cavity 101, the flow channel 105 is uniformly arranged on the outer side surface of the support column 102, the upper end of the step sleeve 6 is uniformly provided with an opening 61 for gas passing, a gap for gas passing is left between the outer side edge of the pad 103 and the inner wall of the sealing frame 3, the middle part of the pad 103 is uniformly provided with a strip-shaped opening 106 for gas passing, and the strip-shaped opening 106 is located at the gap of the refractory pad 104. The pull rod 9 is arranged at the bottom surface of the sealing frame 3, the sealing plate 91 is slidingly connected to the bottom of the pull rod 9, the sealing plate 91 corresponds to the opening position at the bottom of the cavity 101, the upper end of the pull rod 9 is sleeved with a second spring 92, the upper end of the second spring 92 is in abutment with the bottom surface of the sealing frame 3, and the lower end of the second spring 92 is in abutment with the sealing plate 91.

[0048] In the process of synchronous downward movement of the sealing frame 3 with the furnace body 21 pressure, the step sleeve 6 fixed at the bottom of the sealing frame 3 is in sliding fit with the support column 102 inside the cavity 101 and is sealed by the sealing ring 62, reducing the gas leakage during the subsequent compression of the cavity 101; at the same time, the sealing plate 91 is slidingly assembled at the bottom of the pull rod 9 connected with the sealing frame 3, and with the downward movement of the sealing frame 3, the sealing plate 91 first contacts the inner bottom surface of the cavity 101, so that the second spring 92 is in a compressed state, and the sealing plate 91 is tightly attached to the bottom surface of the cavity 101 through the elastic force characteristics of the second spring 92; at the same time, the step sleeve 6 slides along the support column 102 to the bottom position of the flow channel 105, the step sleeve 6 covers the inlet of the flow channel 105, and the communication between the flow channel 105 and the inside of the cavity 101 is blocked, so that the cavity 101 forms a completely sealed space, providing stable pressure for the effective compression of air and laying a foundation for the subsequent sealing of the furnace body 21.

[0049] After the heat treatment process of the lining plate is completed, the driving member 22 inside the support 2 works in reverse, driving the furnace body 21 to move upward along the vertical direction until the furnace body 21 is completely separated from the trolley 1; at this time, the pressure of the furnace body 21 on the sealing frame 3 disappears, the first spring 7 resets and drives the sealing frame 3 to reset upward; at the same time, the elastic force of the second spring 92 is released, pulling the pull rod 9 and the sealing plate 91 to reset upward synchronously, so that the sealing plate 91 is completely separated from the opening at the bottom of the cavity 101, and the opening at the bottom of the cavity 101 is in an open state, so that the external normal temperature air can enter the inside of the cavity 101 through the opening; at the same time, the flow channel 105 inside the support column 102 restores the communication with the inside of the cavity 101 with the reset of the step sleeve 6, the fan 8 is started, and the airflow blown by the fan 8 enters the flow channel 105 inside the support column 102 through the cavity 101, and then spreads to the surrounding through the circumferentially uniformly arranged apertures 61 at the upper end of the step sleeve 6; subsequently, part of the airflow is naturally discharged through the gap between the pad 103 and the sealing frame 3, and the other part is directly blown to the gap of the lining plate stack through the pre-set strip-shaped opening 106 on the pad 103, so that the normal temperature airflow flows outward from the internal gap of the lining plate, not only can quickly take away the heat accumulated in the lining plate, avoid deformation or cracking caused by too large temperature difference between the inside and outside of the lining plate, but also can ensure that each part of each lining plate can be covered by the airflow, realizing uniform cooling of the whole lining plate, protecting the size accuracy of the lining plate after heat treatment, and improving the finished product quality of the lining plate.

[0050] With reference to Figure 4 and Figure 5 , the upper end edge of the sealing frame 3 is provided with an inclined surface 33, and the inner side edge of the bottom surface of the furnace body 21 is provided with a chamfer matched with the inclined surface 33.

[0051] The chamfer of the inner wall of the furnace body 21 cooperates with the inclined surface 33 at the upper end of the sealing frame 3 when the furnace body 21 moves downward, can play a positioning and guiding role for the downward movement of the furnace body 21, can push the furnace body 21 to adjust slightly in the horizontal direction, and can gradually align the central axis of the furnace body 21 with the central axis of the trolley 1, so as to realize preliminary positioning and correction during the downward movement of the furnace body 21, avoid misalignment and collision between the furnace body 21 and the sealing frame 3 due to initial deviation, improve the matching precision of the furnace body 21 and the trolley 1, and the uniform contact state can make the contact pressure of the sealing strip 212 and the sealing gasket 51 consistent in the circumferential direction, so that the sealing pressure of each part of the sealing surface can meet the design requirements, effectively block the leakage path of the high-temperature gas in the furnace body 21 from the weak sealing area, and be beneficial to ensuring the sealing effect of the furnace body 21 and the trolley 1.

[0052] The scheme makes the sealing frame 3 move downward by the abutment of the lower part of the furnace body 21 and the sealing frame 3, and makes the air in the cavity 101 compressed and sprayed from the air groove 31 by changing the relative position of the T-shaped rod 4 and the air hole 32; then the sealing frame 3 moves downward again, the air groove 31 is closed corresponding to the inner wall of the cavity 101, the gas in the cavity 101 is compressed again, the rubber pad 52 deforms to elastically support the sealing gasket 51, and the sealing effect of the furnace body 21 is improved; after heat treatment, the furnace body 21 moves upward, and each component resets; the cavity 101 is communicated with the space at the bottom of the backing plate 103 through the flow channel 105, air is introduced by the fan 8, and air is uniformly blown out through the flow channel 105, the gap 61 of the stepped sleeve 6 and the strip-shaped opening 106 to cool the lining plate.

[0053] The implementation principle of the lining plate heat treatment equipment in the embodiment of the present application is as follows:

[0054] In use, the cast lining plate is first placed on the refractory pad 104 on the upper surface of the backing plate 103, and then the trolley 1 is moved along the external track to be directly below the furnace body 21. Then the driving member 22 in the support 2 is started to drive the furnace body 21 to move downward; during this process, the chamfer of the inner wall of the furnace body 21 cooperates with the inclined surface 33 at the upper end of the sealing frame 3 to play a positioning and guiding role for the downward movement of the furnace body 21, and can improve the matching precision of the furnace body 21 and the trolley 1, laying a foundation for subsequent sealing effect.

[0055] When the lower edge of the furnace body 21 contacts the upper end of the sealing frame 3, the sealing frame 3 moves downward synchronously under the pressure of the furnace body 21 as the furnace body 21 continues to move downward. In the initial downward movement stage, the T-shaped rod 4 is located at the bottom of the air hole 32, the sealing frame 3 moves downward to gradually reduce the space in the cavity 101, and the air in the cavity 101 is gradually compressed; under the action of the compressed air, the rubber pad 52 deforms and abuts against the sealing gasket 51, so that the middle part of the sealing gasket 51 is bulged upward, creating conditions for subsequent cleaning of the debris on the surface of the sealing gasket 51.

[0056] With the continuous downward movement of the sealing frame 3, when the upper end of the T-shaped rod moves to the upper end of the air groove 31, the air groove 31 corresponds to the sealing gasket 51, and the air groove 31 is in communication with the inside of the cavity 101 through the air hole 32. At this time, the compressed air in the cavity 101 is sprayed out from the air groove 31 through the air hole 32, and the high-pressure gas directly acts on the surface of the sealing gasket 51, realizing the debris cleaning of the sealing gasket 51, thereby ensuring the subsequent sealing effect of the sealing gasket 51.

[0057] The sealing frame 3 continues to move downward, and the air groove 31 gradually corresponds to the inner wall of the cavity 101, and finally makes the air groove 31 closed, and the gas in the cavity 101 is compressed again, and the rubber pad 52 is further deformed and abuts against the sealing gasket 51, and the sealing gasket 51 is flexibly supported; at the same time, the sealing strip 212 on the bottom surface of the furnace body 21 abuts against the sealing gasket 51, and in combination with the flexible support of the rubber pad 52, a stable seal is formed in the furnace body 21.

[0058] During the downward movement of the sealing frame 3, the first spring 7 is gradually compressed to provide power for subsequent reset; the stepped sleeve 6 slides downward along the support column 102, and the sealing plate 91 at the bottom of the pull rod 9 moves downward synchronously with the sealing frame 3 under the elastic support of the second spring 92; when the sealing frame 3 moves downward to a set distance, the stepped sleeve 6 moves to the bottom of the flow channel 105, and the sealing plate 91 seals the opening at the bottom of the cavity 101, so that the cavity 101 as a whole forms a closed environment, providing necessary conditions for the compression of the gas in the cavity 101.

[0059] After the heat treatment is completed, the furnace body 21 moves upward and separates from the trolley 1, and after the furnace body 21 moves upward and resets, the first spring 7 releases the elastic force to drive the sealing frame 3 to reset, and at the same time, the upper end of the stepped sleeve 6 abuts against the bottom surface of the pad 103 to limit the reset position of the sealing frame 3. During the reset of the sealing frame 3, the sealing plate 91 resets synchronously under the elastic force of the second spring 92, and no longer seals the opening at the bottom of the cavity 101, so that external air can enter the cavity 101; the flow channel 105 in the support column 102 is in communication with the inside of the cavity 101, the fan 8 is started and air is introduced into the cavity 101, the airflow diffuses to the gap between the sealing frame 3 and the pad 103 through the flow channel 105 and the apertures 61 uniformly arranged at the upper end of the stepped sleeve 6 in sequence, and finally is blown out through the gap between the pad 103 and the sealing frame 3 and the strip-shaped opening 106, and directly acts on the gap between the lining plates, thereby realizing uniform cooling of the lining plates from the inside and improving the heat treatment effect of the lining plates.

[0060] The above describes the preferred embodiments of the present application, and it should be noted that those of ordinary skill in the art can make some improvements and refinements 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 lining heat treatment equipment, comprising a trolley and a furnace body hoisted by a support, characterized in that: an upper end of the trolley is provided with a cavity, an inner bottom surface of the cavity is provided with support columns in an array, upper ends of the support columns are fixedly connected with base plates, and upper surfaces of the base plates are provided with refractory pads for placing linings; a sealing frame is vertically and slidingly connected in the cavity, an outer side of the sealing frame is provided with air grooves, bottom surfaces of the sealing frame are uniformly provided with air holes in communication with the air grooves, an inner bottom surface edge of the cavity is uniformly provided with T-shaped rods, and the T-shaped rods are respectively located in the axially corresponding air holes; an upper end edge of the trolley is provided with a recess, a sealing pad is arranged on a stepped surface at an upper end opening of the recess, a bottom surface edge of the furnace body is provided with a sealing strip capable of abutting against the sealing pad, a rubber pad is arranged in the recess, the rubber pad is capable of abutting against the sealing pad, an opening at a bottom of the recess is in communication with a bottom of the cavity, middle portions of the sealing frame are uniformly provided with stepped sleeves, upper ends of the stepped sleeves are capable of abutting against bottom surfaces of the base plates, the stepped sleeves are respectively slidingly connected with the axially corresponding support columns, lower ends of the support columns are respectively sleeved with first springs, upper ends of the first springs are respectively abutted against bottom surfaces of the axially corresponding stepped sleeves, and lower ends of the first springs are respectively abutted against an inner bottom surface of the cavity; inner walls of the stepped sleeves are respectively provided with sealing rings. Upper end edges of the sealing frame are provided with inclined surfaces, and inner side edges of a bottom surface of the furnace body are provided with chamfers matched with the inclined surfaces. An opening at the bottom of the cavity is provided with fans in an array, outer side surfaces of the support columns are circumferentially provided with flow channels, upper ends of the stepped sleeves are uniformly provided with slits for gas passing, and gaps for gas passing are left between outer side edges of the base plates and inner walls of the sealing frame. A bottom surface of the sealing frame is provided with pull rods, the pull rods are respectively slidingly connected with sealing plates capable of sealing the opening at the bottom of the cavity, upper ends of the two pull rods are respectively sleeved with second springs, upper ends of the second springs are respectively abutted against the bottom surface of the sealing frame, and lower ends of the second springs are respectively abutted against the sealing plates. Middle portions of the base plates are uniformly provided with strip-shaped openings for gas passing, and the strip-shaped openings are respectively located at gaps of the refractory pads.

2. A heat treatment apparatus for a liner plate according to claim 1, characterized by: An upper end of the support is provided with a driving member for driving the furnace body to move up and down.

3. A heat treating apparatus for a liner plate according to claim 1, wherein: The support is provided with two guide rails in the inside, and left and right side surfaces of the furnace body are respectively provided with two guide columns capable of cooperating with the guide rails.

4. A heat treating apparatus for a liner plate according to claim 1, wherein: ​ 5. A heat treating apparatus for a liner plate according to claim 1, wherein: ​ 6. A heat treating apparatus for a liner plate according to claim 1, wherein: ​ 7. A heat treating apparatus for a liner plate according to claim 1, wherein: ​

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