Furnace door mechanism and pressure vessel

Abstract

The embodiment of the present invention provides a furnace door mechanism and a pressure vessel, which relates to the field of pressure vessels. The furnace door mechanism includes a furnace door shell, a furnace door body, a furnace door guide rail and a furnace door drive assembly. The furnace door shell is provided with a furnace door opening. The furnace door guide rail is arranged on the furnace door shell on at least one side of the furnace door opening. The furnace door body is slidably arranged on the furnace door guide rail. The furnace door drive assembly is connected to the furnace door body and is used to drive the furnace door body to slide along the furnace door guide rail so that the furnace door body opens or closes the furnace door opening. Compared with the prior art, the present invention provides a furnace door guide rail on at least one side of the furnace door opening, slides the furnace door body on the furnace door guide rail, and drives the furnace door body to slide along the furnace door guide rail through the furnace door drive assembly, so as to quickly open or close the furnace door opening in a sliding manner.

Description

Technical Field

[0001] The invention relates to the field of pressure vessels, and in particular to a furnace door mechanism and a pressure vessel. Background Art

[0002] In the prior art, a lid or a furnace door is usually installed on a container, which requires a set of clamping devices to open and close the lid or the furnace door. The higher the pressure in the pressure vessel, the larger the size of the clamping device. When the size of the clamping device is too large, it is very difficult to open the lid or the furnace quickly. Summary of the invention

[0003] Objects of the present invention include, for example, providing a furnace door mechanism and a pressure vessel that can quickly open or close the furnace door opening.

[0004] The embodiments of the present invention can be implemented as follows:

[0005] In a first aspect, an embodiment of the present invention provides a furnace door mechanism, comprising a furnace door shell, a furnace door body, a furnace door guide rail and a furnace door drive assembly, wherein the furnace door shell is provided with a furnace door opening, the furnace door guide rail is arranged on the furnace door shell on at least one side of the furnace door opening, the furnace door body is slidably arranged on the furnace door guide rail, and the furnace door drive assembly is connected to the furnace door body for driving the furnace door body to slide along the furnace door guide rail so that the furnace door body opens or closes the furnace door opening.

[0006] In an optional embodiment, the furnace door drive assembly includes a furnace door drive, a load-bearing and limiting slide rail, a first sliding member and a connecting member, the load-bearing and limiting slide rail is arranged parallel to the furnace door guide rail, the first sliding member is accommodated in the load-bearing and limiting slide rail, the furnace door drive is connected to the first sliding member, and is used to drive the first sliding member to move along the load-bearing and limiting slide rail, one end of the connecting member is connected to the first sliding member or the furnace door drive, and the other end is connected to the furnace door body to drive the furnace door body to slide along the furnace door guide rail.

[0007] In an optional embodiment, the connecting member includes a flexible portion, one end of the flexible portion is connected to the first sliding member, and the other end of the flexible portion is connected to the furnace door body.

[0008] In an optional embodiment, a second sliding member is provided on the furnace door body, and the second sliding member is slidably provided on the furnace door guide rail.

[0009] In an optional embodiment, the furnace door mechanism also includes a clamping assembly, which includes a clamping drive, a clamping guide block and a clamping member, wherein the clamping guide block is arranged on the furnace door shell and has a guide hole, one end of the clamping member is connected to the clamping drive member, and the other end passes through the guide hole for being supported on the furnace door body in a closed state so that the furnace door body is pressed against the furnace door opening.

[0010] In an optional embodiment, the clamping guide block is arranged on a side of the furnace door guide rail away from the furnace door opening, a wedge-shaped pressure block is provided at one end of the clamping member away from the clamping drive member, and a wedge-shaped pressure block matching the wedge-shaped pressure block is provided on the furnace door body, and the wedge-shaped pressure block is used to be pressed on the wedge-shaped pressure block to apply a force to the furnace door body in a direction close to the furnace door opening.

[0011] In an optional embodiment, the furnace door mechanism also includes a vacuum adsorption component, which includes a vacuum intake valve and a vacuum exhaust valve. A vent hole that penetrates the furnace door shell is opened between the furnace door opening and the furnace door guide rail. The furnace door body is used to seal the vent hole when the furnace door opening is closed. The vacuum intake valve and the vacuum exhaust valve are selectively connected to the vent hole. The vacuum intake valve is used to ventilate the vent hole to separate the furnace door body and the furnace door shell from each other, and the vacuum exhaust valve is used to extract air from the vent hole so that the furnace door body is adsorbed and pressed against the furnace door shell.

[0012] In an optional embodiment, a sealing ring is provided around the vent hole, and the sealing ring is used to abut against the furnace door body to form a sealed cavity between the furnace door body and the vent hole.

[0013] In an optional embodiment, the furnace door housing has an inner side wall and an outer side wall opposite to each other, and the furnace door guide rail is arranged on the inner side wall.

[0014] In a second aspect, an embodiment of the present invention provides a pressure vessel, comprising a cooling device and a furnace door mechanism as described in any one of the aforementioned embodiments, wherein the cooling device is arranged in the furnace door shell, and the furnace door body corresponds to the cooling device when the furnace door opening is opened.

[0015] The beneficial effects of the embodiments of the present invention include, for example:

[0016] The furnace door mechanism provided by the present invention is configured with a furnace door guide rail on at least one side of the furnace door opening, a furnace door body is slidably disposed on the furnace door guide rail, and the furnace door body is driven to slide along the furnace door guide rail by a furnace door driving assembly, so that the furnace door opening can be quickly opened or closed in a sliding manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic structural diagram of a furnace door mechanism provided by a first embodiment of the present invention at a first viewing angle;

[0019] Figure 2 A schematic structural diagram of the furnace door mechanism provided by the first embodiment of the present invention at a second viewing angle;

[0020] Figure 3 for Figure 2 A partial enlarged schematic diagram of middle III;

[0021] Figure 4 for Figure 1 Schematic diagram of the structure of the middle furnace door drive assembly;

[0022] Figure 5 A schematic diagram of a partial structure of a furnace door mechanism provided in a first embodiment of the present invention;

[0023] Figure 6 A schematic structural diagram of a cooling device provided in the second embodiment of the present invention.

[0024] Icons: 100-furnace door mechanism; 110-furnace door shell; 111-furnace door opening; 130-furnace door body; 131-second sliding member; 133-wedge-shaped pressure block; 150-furnace door guide rail; 170-furnace door drive assembly; 171-furnace door drive member; 173-load-bearing limit slide rail; 175-first sliding member; 177-connecting member; 180-pressing assembly; 181-pressing drive member; 183-pressing guide block; 185-pressing member; 187-wedge Press block; 190-vacuum adsorption component; 191-vacuum intake valve; 193-vacuum exhaust valve; 195-vent; 197-sealing ring; 210-first rectifying mechanism; 230-second rectifying mechanism; 250-first heat exchanger; 251-first reversing mechanism; 270-second heat exchanger; 271-second reversing mechanism; 290-cooling fan; 291-vertical guide chamber; 293-horizontal guide chamber; 295-heat exchange chamber; 297-axial flow chamber. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0030] As disclosed in the background technology, in the prior art, the furnace door of the pressure vessel is usually opened outside the furnace body, and the furnace door is opened or closed by a clamp device. Specifically, the sealing cover used on the general pressure vessel is usually installed on the outside of the pressure vessel; in simple terms, if there is a cover on the inside of the container, the size of the container will become very large. If a cover needs to be installed on the pressure vessel, the shape of the pressure vessel is generally cylindrical, and the cover is used to open and close on the plane of the cylinder, similar to the sealing structure of a teapot and a tea cover. Further, a technology of fixing the cover by a clamp has emerged. The size of the clamp changes with the size of the cover. For a large-sized cover, the use of the clamp is very cumbersome, making it difficult to quickly open and close the door.

[0031] At the same time, the lid is usually opened in a flat opening manner, which requires a relatively large opening and closing space, so it cannot be placed inside the container. As the volume of the container and the size of the opening increase, it becomes more difficult to open and close the lid.

[0032] The invention provides a mechanism for opening and closing a furnace door by using a sliding wheel, which is arranged inside a container and can quickly open or close the furnace door.

[0033] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0034] First embodiment

[0035] See also Figure 1 and Figure 2 This embodiment provides a furnace door mechanism 100, which can realize the rapid opening or closing of the furnace door, and the furnace door is arranged inside the container, and the furnace door can be compressed by pressure difference, without considering its structural strength, and the manufacturing cost of the furnace door is reduced.

[0036] The furnace door mechanism 100 provided in this embodiment includes a furnace door shell 110, a furnace door body 130, a furnace door guide rail 150, a furnace door drive assembly 170, a clamping assembly 180 and a vacuum adsorption assembly 190. The furnace door shell 110 is provided with a furnace door opening 111. The furnace door guide rail 150 is arranged on the furnace door shell 110 on at least one side of the furnace door opening 111. The furnace door body 130 is slidably arranged on the furnace door guide rail 150. The furnace door drive assembly 170 is connected to the furnace door body 130, and is used for driving the furnace door body 130 to slide along the furnace door guide rail 150 so that the furnace door body 130 opens or closes the furnace door opening 111. The clamping assembly 180 is disposed on the furnace door shell 110, and is used to be pressed on the furnace door body 130 when the furnace door body 130 closes the furnace door opening 111. The vacuum adsorption assembly 190 is disposed on the furnace door shell 110, and is used to be adsorbed on the furnace door body 130 when the furnace door body 130 closes the furnace door opening 111, thereby improving the airtightness between the furnace door body 130 and the furnace door opening 111.

[0037] In this embodiment, the furnace door shell 110 is a pressure vessel shell, wherein the pressure vessel may be a furnace body such as a combustion furnace, a forging furnace or a nitriding furnace, in which the internal air pressure is greater than the external air pressure when in working state. The furnace door opening 111 may be opened at the end, or may be opened on the side wall. The opening position of the furnace door opening 111 is not specifically limited herein.

[0038] In this embodiment, furnace door guide rails 150 are provided on the upper and lower sides of the furnace door opening 111, and the upper and lower sides of the furnace door body 130 are respectively slidably set on the furnace door guide rails 150, and the furnace door body 130 is translated by the furnace door guide rails 150 on both sides, thereby opening or closing the furnace door opening 111.

[0039] It should be noted that in the present embodiment, the furnace door opening 111 is rectangular, the furnace door body 130 is also rectangular, and the size of the furnace door body 130 is larger than the size of the furnace door opening 111, so that when the furnace door body 130 moves to the furnace door opening 111, it can completely cover the furnace door opening 111, thereby ensuring the closed airtightness of the furnace door body 130.

[0040] In this embodiment, the furnace door housing 110 has an inner side wall and an outer side wall opposite to each other, and the furnace door guide rail 150 is arranged on the inner side wall. By arranging the furnace door guide rail 150 on the inner side wall, the furnace door body 130 is also arranged inside the pressure vessel housing, which can avoid arranging a protruding furnace door structure outside the pressure container housing, thereby reducing the size of the overall pressure vessel.

[0041] See also Figures 3 to 5 The furnace door driving assembly 170 includes a furnace door driving member 171, a load-bearing and limiting slide rail 173, a first sliding member 175 and a connecting member 177. The load-bearing and limiting slide rail 173 is arranged parallel to the furnace door guide rail 150. The first sliding member 175 is accommodated in the load-bearing and limiting slide rail 173. The furnace door driving member 171 is connected to the first sliding member 175 to drive the first sliding member 175 to move along the load-bearing and limiting slide rail 173. One end of the connecting member 177 is connected to the first sliding member 175 or the furnace door driving member 171, and the other end is connected to the furnace door body 130 to drive the furnace door body 130 to slide along the furnace door guide rail 150.

[0042] In this embodiment, the first sliding member 175 is a first pulley, which is accommodated in the load-bearing and limiting slide rail 173 and moves along the load-bearing and limiting slide rail 173 under the drive of the furnace door driving member 171. The load-bearing and limiting slide rail 173 is in a rectangular cylindrical shape and is welded to the inner side wall of the furnace door shell 110. The bottom of the load-bearing and limiting slide rail 173 is provided with a strip hole for the connecting member 177 to extend out. The connecting member 177 is inserted into the strip hole and is respectively connected to the first pulley arranged in the load-bearing and limiting slide rail 173 and the furnace door body 130 below, so that the power transmission can be realized through the connecting member 177.

[0043] It should be noted that, in this embodiment, the furnace door driving member 171 is arranged above the furnace door opening 111 , and the connecting member 177 serves to support the furnace door body 130 .

[0044] In this embodiment, the connecting member 177 includes a flexible portion, one end of which is connected to the first sliding member 175, and the other end is connected to the furnace door body 130. Specifically, the connecting member 177 is a connecting chain, and the flexible portion refers to the middle part of the connecting chain. The upper and lower ends of the connecting chain are respectively fixedly connected to the first pulley and the furnace door body 130, and the chain is used for connection, so that the furnace door driving member 171 has a certain hysteresis when driving, so as to avoid the furnace door body 130 being stuck to the furnace door driving member 171 when starting, and facilitate the starting of the furnace door driving member 171. At the same time, by setting a flexible chain, it is possible to avoid the influence of thermal expansion on the mutual connection structure during heat treatment in the furnace, thereby ensuring the stability of the structure.

[0045] Of course, other structural parts with certain elasticity or movable connection characteristics and high temperature resistance, such as steel bars with certain toughness, can also be used here.

[0046] It should also be noted that the first pulley includes two rollers and a shaft passing through the two rollers. In this embodiment, the connecting chain is connected to the first pulley, which means that it is connected to the shaft of the first pulley. The connecting chain will not affect the movement of the first pulley along the load-bearing limiting slide rail 173.

[0047] In this embodiment, the furnace door body 130 is provided with a second sliding member 131, and the second sliding member 131 is slidably arranged on the furnace door guide rail 150. Specifically, the second sliding member 131 is arranged on both the upper and lower sides of the furnace door body 130, and the second sliding member 131 is a second pulley, which is slidably arranged on the furnace door guide rail 150 and can slide along the furnace door guide rail 150 under the action of external force.

[0048] In this embodiment, the furnace door driving component 171 is a driving cylinder, the cylinder body of the cylinder is fixedly arranged on the furnace door shell 110 and protrudes outward, the piston rod of the cylinder extends into the load-bearing limiting slide rail 173 and is fixedly connected to the shaft of the first pulley, so that under the drive of the piston rod, the first pulley can roll along the load-bearing limiting slide rail 173 and drive the furnace door body 130 to move through the connecting member 177.

[0049] The clamping assembly 180 includes a clamping drive 181, a clamping guide block 183 and a clamping member 185. The clamping guide block 183 is arranged on the furnace door shell 110 and has a guide hole. One end of the clamping member 185 is connected to the clamping drive 181, and the other end passes through the guide hole for being supported on the furnace door body 130 in a closed state so that the furnace door body 130 is pressed against the furnace door opening 111.

[0050] In this embodiment, clamping assemblies 180 are disposed on both upper and lower sides of the furnace door opening 111 , and two clamping members 185 are respectively pressed against the upper and lower sides of the furnace door body 130 in the closed state, thereby improving the clamping effect.

[0051] In this embodiment, the clamping guide block 183 is arranged on the side of the furnace door guide rail 150 away from the furnace door opening 111, and a wedge-shaped pressure block 187 is arranged on the end of the clamping member 185 away from the clamping driving member 181. A wedge-shaped pressure block 133 matching the wedge-shaped pressure block 187 is arranged on the furnace door body 130, and the wedge-shaped pressure block 187 is used to be pressed on the wedge-shaped pressure block 133 to apply force to the furnace door body 130 in the direction close to the furnace door opening 111.

[0052] In this embodiment, the clamping guide block 183 is welded to the inner wall of the furnace door shell 110, and the clamping drive member 181 is arranged on the upper and lower sides of the furnace door shell 110, so as to drive the clamping member 185 to move in the up and down directions, and then be pressed on the wedge-shaped pressure block 133 of the furnace door body 130.

[0053] In this embodiment, the pressing driving member 181 is a cylinder, the cylinder body of the cylinder is fixedly arranged on the upper and lower sides of the furnace door shell 110, and the piston rod of the cylinder is fixedly connected to the pressing member 185.

[0054] The vacuum adsorption assembly 190 includes a vacuum air intake valve 191 and a vacuum exhaust valve 193. A vent hole 195 that penetrates the furnace door shell 110 is opened between the furnace door opening 111 and the furnace door guide rail 150. The furnace door body 130 is used to seal on the vent hole 195 when the furnace door opening 111 is closed. The vacuum air intake valve 191 and the vacuum exhaust valve 193 are selectively connected to the vent hole 195. The vacuum air intake valve 191 is used to ventilate the vent hole 195 to separate the furnace door body 130 and the furnace door shell 110 from each other. The vacuum exhaust valve 193 is used to extract the air in the vent hole 195 so that the furnace door body 130 is adsorbed and pressed against the furnace door shell 110.

[0055] In this embodiment, a sealing ring 197 is provided around the vent hole 195. Specifically, the sealing ring 197 is an O-shaped sealing ring 197. The sealing ring 197 is used to abut against the furnace door body 130, so that a sealed cavity is formed between the furnace door body 130 and the vent hole 195. Specifically, the sealing ring 197 is fixedly arranged on the inner side wall of the furnace door shell 110 and is arranged around the vent hole 195. After the furnace door body 130 moves to the position of closing the furnace door body 130, it abuts against the sealing ring 197 under the pressing action of the pressing assembly 180. At this time, the air in the vent hole 195 is extracted through the vacuum exhaust valve 193, so that the vent hole 195 is in a vacuum negative pressure state, and then the furnace door body 130 is tightly adsorbed around the vent hole 195, and the pressure difference is used to achieve the adsorption effect on the furnace door body 130, so that the furnace door body 130 can be better fixed.

[0056] It should be noted that in order to ensure better operation of the vacuum exhaust valve 193 and the vacuum intake valve 191, a sealed external equalizing pressure chamber is provided on the outside of the vent hole 195. The vacuum exhaust valve 193 and the vacuum intake valve 191 are both connected to the external equalizing pressure chamber. In order to protect the gas in the furnace and prevent the entry of external impurities, the gas introduced into the external equalizing pressure chamber by the vacuum intake valve 191 is a rare gas that will not react with the workpiece in the furnace, such as nitrogen or argon.

[0057] It should also be noted that in this embodiment, the vacuum exhaust valve 193 is externally connected to a vacuum pump, and the vacuum pump is used to achieve the vacuuming action. The vacuum intake valve 191 is externally connected to an intake pipeline, and nitrogen or other rare gases are introduced into the vent hole 195.

[0058] In summary, the furnace door mechanism 100 provided in this embodiment has the following operating principles:

[0059] When the furnace door needs to be opened, first the two clamping assemblies 180 are loosened, and the clamping member 185 is driven by the clamping driving member 181 to separate from the furnace door body 130, thereby releasing the limit on the furnace door body 130. At this time, the vacuum air inlet valve 191 is actuated to introduce nitrogen into the vent hole 195, and the nitrogen enters the inner side of the furnace door shell 110 through the vent hole 195, thereby separating the sealing ring 197 from the furnace door body 130, and then the furnace door driving member 171 is used to move the furnace door body 130 laterally along the furnace door guide rail 150 to the open position, thereby completing the operation of the furnace door body 130 to open the furnace door opening 111.

[0060] When the furnace door needs to be closed, first the furnace door driving component 171 moves the furnace door body 130 laterally along the furnace door guide rail 150 to the closed position, and then the vacuum exhaust valve 193 is actuated, and the vacuum pump arranged outside the furnace extracts the gas in the vent hole 195, so that the vent hole 195 is in a vacuum negative pressure state, and the furnace door body 130 is adsorbed on the sealing ring 197 through the pressure difference, thereby realizing the compression of the furnace door body 130, and then the two clamping components 180 are clamped, and the clamping member 185 is pressed on the upper and lower sides of the furnace door body 130 under the drive of the clamping driving component 181 to maintain the compression state of the furnace door body 130.

[0061] In order to ensure that the sealing components on the inner side of the furnace door body 130 are not damaged when the furnace door body 130 moves along the load-bearing limiting slide rail 173, a furnace door guide rail 150 and a second sliding member 131 are provided to fix and limit the furnace door body 130 to move in a fixed manner when it moves horizontally, so that the friction sliding between the furnace door body 130 and the furnace door shell 110 is changed to rolling, and the furnace door opening 111 can be quickly opened and closed by the second sliding member 131.

[0062] Second embodiment

[0063] The present embodiment provides a pressure vessel, including a cooling device and a furnace door mechanism 100, wherein the basic structure and principle of the furnace door mechanism 100 and the technical effects produced are the same as those of the first embodiment. For the sake of brief description, for parts not mentioned in the present embodiment, reference may be made to the corresponding contents in the first embodiment.

[0064] The furnace door mechanism 100 includes a furnace door housing 110, a furnace door body 130, a furnace door guide rail 150 and a furnace door driving assembly 170. The furnace door housing 110 is provided with a furnace door opening 111. The furnace door guide rail 150 is arranged on the furnace door housing 110 at least on one side of the furnace door opening 111. The furnace door body 130 is slidably arranged on the furnace door guide rail 150. The furnace door driving assembly 170 is connected to the furnace door body 130 and is used to drive the furnace door body 130 to slide along the furnace door guide rail 150 so that the furnace door body 130 opens or closes the furnace door opening 111. The cooling device is arranged in the furnace door housing 110, and the furnace door body 130 corresponds to the cooling device when the furnace door opening 111 is opened.

[0065] See also Figure 6 In this embodiment, the cooling device is arranged on the inner side of the furnace door opening and closing structure. Since the furnace door body 130 needs to occupy a certain space when opening and closing the furnace door opening 111, the cooling device is arranged in this part of the space. The cooling device includes a first rectifying mechanism 210, a second rectifying mechanism 230, a first heat exchanger 250, a second heat exchanger 270 and a cooling fan 290. A cooling air duct is arranged in the pressure vessel. The cooling air duct includes a vertical guide chamber 291 and horizontal guide chambers 293 on the upper and lower sides that are interconnected. The workpiece is arranged in the vertical guide chamber 291. The cooling fan 290 is arranged on the side wall away from the vertical guide chamber 291. The first rectifying mechanism 210 and the second rectifying mechanism 230 are respectively Arranged on the upper and lower sides of the vertical guide chamber 291, the two horizontal guide chambers 293 are respectively provided with a first heat exchanger 250 and a second heat exchanger 270 at the ends away from the vertical guide chamber 291, and a first reversing mechanism 251 is arranged between the upper horizontal guide chamber 293 and the first heat exchanger 250, the first reversing mechanism 251 can open or close the connection between the first heat exchanger 250 and the horizontal guide chamber 293, and exhaust air through another opening, and a second reversing mechanism 271 is arranged between the lower horizontal guide chamber 293 and the second heat exchanger 270, the second reversing mechanism 271 can open or close the connection between the second heat exchanger and the horizontal guide chamber 293, and exhaust air through another opening.

[0066] In this embodiment, the cooling fan 290 is connected to two horizontal guide chambers 293. Specifically, the cooling fan 290 is a cross-flow fan, and the air inlet of the cooling fan 290 is connected to one of the horizontal guide chambers 293, and the air outlet is connected to the other horizontal guide chamber 293. Each horizontal guide chamber 293 has two openings, and the first reversing mechanism 251 and the second reversing mechanism 271 are respectively arranged at the two openings of the upper and lower horizontal guide chambers 293, and one of the openings is opened selectively, and the first heat exchanger 250 or the second heat exchanger 270 is arranged at one of the openings, and the first heat exchange mechanism and the second heat exchange mechanism are used to realize the reversal of the airflow.

[0067] Specifically, the cooling air duct also includes a heat exchange chamber 295 and an axial flow chamber 297. The heat exchange chamber 295 is connected to the air inlet of the cooling fan 290, and the axial flow chamber 297 is connected to the air outlet of the cooling fan 290. The heat exchange chamber 295 is connected to an opening of the horizontal guide chamber 293, and the axial flow chamber 297 is connected to another opening of the horizontal guide chamber 293. The first reversing mechanism 251 or the second reversing mechanism 271 can close one of the openings and open the other opening. The first heat exchanger 250 and the second heat exchanger 270 are both arranged in the heat exchange chamber 295 and are arranged close to the openings of the two horizontal guide chambers 293.

[0068] The gas flow is described in detail below:

[0069] When cooling from bottom to top is required, the first reversing mechanism 251 opens one of the openings, so that the heat exchange chamber 295 is connected with the upper horizontal guide chamber 293, and the axial flow chamber 297 is isolated from the upper horizontal guide chamber 293. The second reversing mechanism 271 opens one of the openings, so that the heat exchange chamber 295 is isolated from the lower horizontal guide chamber 293, and the axial flow chamber 297 is connected with the lower horizontal guide chamber 293. The gas blown out by the cooling fan 290 flows along the direction shown in the figure from the axial flow chamber 297 into the lower horizontal guide chamber 293, passes through the second rectifying mechanism 230, enters the vertical guide chamber 291, cools the workpiece, passes through the first rectifying mechanism 210, enters the upper horizontal guide chamber 293, and finally enters the first heat exchanger 250 through the opening for cooling and then returns to the cooling fan 290 to realize the circulating cooling function. At this time, the second heat exchanger 270 is in a shutdown state.

[0070] When cooling from top to bottom is required, the first reversing mechanism 251 opens one of the openings, so that the heat exchange chamber 295 is isolated from the upper horizontal guide chamber 293, and the axial flow chamber 297 is connected to the upper horizontal guide chamber 293; the second reversing mechanism 271 opens one of the openings, so that the heat exchange chamber 295 is connected to the lower horizontal guide chamber 293, and the axial flow chamber 297 is isolated from the lower horizontal guide chamber 293; the gas blown out by the cooling fan 290 is opposite to the direction shown in the figure, and flows from the axial flow chamber 297 into the upper horizontal guide chamber 293, passes through the first rectifying mechanism 210, enters the vertical guide chamber 291, cools the workpiece, and then passes through the second rectifying mechanism 230 to enter the lower horizontal guide chamber 293, and finally enters the second heat exchanger 270 through the opening for cooling and then returns to the cooling fan 290, realizing the circulating cooling function. At this time, the first heat exchanger 250 is in a shutdown state.

[0071] The pressure vessel provided in this embodiment can change the gas flow direction according to actual needs to achieve universal cooling of products.

[0072] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A furnace door mechanism, characterized in that: The invention comprises a furnace door shell, a furnace door body, a furnace door guide rail and a furnace door driving assembly, wherein the furnace door shell is provided with a furnace door opening, the furnace door guide rail is arranged on the furnace door shell at least on one side of the furnace door opening, the furnace door body is slidably arranged on the furnace door guide rail, and the furnace door driving assembly is connected to the furnace door body and is used for driving the furnace door body to slide along the furnace door guide rail so that the furnace door body opens or closes the furnace door opening; The first sliding member is connected to the first sliding member and is used to drive the first sliding member to move along the load-bearing limiting slide rail, and one end of the connecting member is connected to the first sliding member or the furnace door driving member, and the other end is connected to the furnace door body to drive the furnace door body to slide along the furnace door guide rail; the furnace door mechanism also includes a pressing assembly, which includes a pressing driving member, a pressing guide block and a pressing member, wherein the pressing guide block is arranged on the furnace door shell and has a guide hole, one end of the pressing member is connected to the pressing driving member, and the other end passes through the guide hole, and is used to abut against the furnace door body in a closed state so that the furnace door body is pressed against the furnace door opening; the pressing guide block is arranged on the The furnace door guide rail is away from the side of the furnace door opening, and the end of the pressing member away from the pressing driving member is provided with a wedge-shaped pressure block, and the furnace door body is provided with a wedge-shaped pressure block matching the wedge-shaped pressure block, and the wedge-shaped pressure block is used to be pressed on the wedge-shaped pressure block to apply a force close to the furnace door opening to the furnace door body; the furnace door mechanism also includes a vacuum adsorption component, and the vacuum adsorption component includes a vacuum intake valve and a vacuum exhaust valve, a vent hole penetrating the furnace door shell is opened between the furnace door opening and the furnace door guide rail, and the furnace door body is used to block the vent hole when closing the furnace door opening, and the vacuum intake valve and the vacuum exhaust valve are selectively connected to the vent hole, the vacuum intake valve is used to ventilate the vent hole to separate the furnace door body and the furnace door shell from each other, and the vacuum exhaust valve is used to extract air in the vent hole so that the furnace door body is adsorbed and pressed against the furnace door shell.

2. The furnace door mechanism according to claim 1, characterized in that: The connecting member comprises a flexible portion, one end of which is connected to the first sliding member, and the other end of which is connected to the furnace door body.

3. The furnace door mechanism according to claim 1, characterized in that: The furnace door body is provided with a second sliding member, and the second sliding member is slidably arranged on the furnace door guide rail.

4. The furnace door mechanism according to claim 1, characterized in that: A sealing ring is arranged around the vent hole, and the sealing ring is used to abut against the furnace door body, so that a sealed cavity is formed between the furnace door body and the vent hole.

5. The furnace door mechanism according to claim 1, characterized in that: The furnace door shell has an inner side wall and an outer side wall opposite to each other, and the furnace door guide rail is arranged on the inner side wall.

6. A pressure vessel, characterized in that: It comprises a cooling device and the furnace door mechanism according to any one of claims 1 to 5, wherein the cooling device is arranged in the furnace door shell, and the furnace door body corresponds to the cooling device when the furnace door opening is opened.

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