Pressure equipment and automatic hole covering mechanism thereof

Abstract

The invention provides pressure equipment and an automatic hole covering mechanism thereof. The automatic hole covering mechanism comprises a filtering piece, a connecting rod assembly and a guiding piece. The filtering piece is used for covering a sewage draining exit in the bottom of the pressure container and realizing filtering. The connecting rod assembly comprises a fixing piece and a linkage piece, the top end of the fixing piece is used for being connected with the bottom of the material frame, and the bottom end is rotationally connected with the middle of the linkage piece. The linkage piece comprises a first linkage part and a second linkage part which are fixedly connected, and the connecting point of the first linkage part and the second linkage part coincides with the connecting point of the linkage piece and the fixing piece. And the first linkage part is connected with the filtering piece. And the guide piece is fixed at the bottom in the pressure container and is distributed with the drain outlet at an interval. The top of the guide piece inclines from top to bottom to form a guide face. The fixing piece can move along with translation of the material frame, so that the second linkage part can move along the guide face, and the linkage piece rotates relative to the fixing piece to drive the filtering piece to rotate downwards to cover the sewage draining exit or rotate upwards to be separated from the sewage draining exit.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure equipment, in particular to a pressure equipment and an automatic hole-covering mechanism thereof. Background Art

[0002] During the production process of pressurized equipment such as autoclaves, which process materials under high temperature and pressure, a certain amount of condensed wastewater is generated within the autoclave and needs to be discharged through a drain outlet. During this process, materials are prone to falling, so a filter box is typically installed at the drain outlet to filter the wastewater during the discharge process and prevent clogging of downstream equipment.

[0003] However, after repeated use, the filter box can become clogged with material, affecting its filtration effectiveness, necessitating regular removal and cleaning. However, the harsh, high-temperature, dimly lit environment inside the autoclave during production makes manual removal and placement of the filter box challenging. Using a cooled filter box before entering the autoclave would affect production cycle time, requiring subsequent reheating, significantly increasing condensate wastewater and energy consumption. Summary of the Invention

[0004] The purpose of the present invention is to provide a pressure equipment and an automatic hole-covering mechanism thereof, which utilizes the process of the material frame of the pressure equipment moving relative to the pressure vessel to enter and exit the pressure vessel, drive the filter element of the automatic hole-covering mechanism to enter and exit the pressure vessel, and automatically realize that the filter element covers the sewage outlet of the pressure vessel, or detaches from the sewage outlet and exits the pressure vessel, without the need for manual operation and without waiting for the temperature and pressure inside the pressure vessel to drop, thereby reducing production energy consumption, saving time, improving production efficiency, and reducing the risk of manual operation.

[0005] To achieve the above object, the present invention adopts the following technical solutions: According to one aspect of the present application, the present application provides an automatic hole covering mechanism, comprising: A filter element, which is used to cover the sewage outlet at the bottom of the pressure vessel and achieve filtration; A connecting rod assembly comprising a fixed member and a linkage member, wherein the top end of the fixed member is used to connect to the bottom of a material frame for containing materials that is movably engaged with the inner wall of the pressure vessel, and the bottom end is rotatably connected to the middle portion of the linkage member; the linkage member comprises a first linkage portion and a second linkage portion that are fixedly connected, and the connection point between the first linkage portion and the second linkage portion coincides with the connection point between the linkage member and the fixed member; the first linkage portion is connected to the filter element; A guide member is fixed to the bottom of the pressure vessel and spaced apart from the sewage outlet; the top of the guide member is inclined from top to bottom to form a guide surface; The fixing member can move with the translation of the material frame, so that the second linkage part can move along the guide surface, so that the linkage member can rotate relative to the fixing member, thereby driving the filter element to rotate downward to cover the sewage outlet, or rotate upward to disengage from the sewage outlet.

[0006] In some embodiments, before the linkage member contacts the guide member, the filter member is arranged obliquely from top to bottom and is spaced above the bottom wall of the pressure vessel.

[0007] In some embodiments, the angle between the first linkage portion and the second linkage portion is α, 0°<α<180°; The length of the first linkage portion is greater than that of the second linkage portion; Before the second linkage part contacts the guide member, the first linkage part and the second linkage part are both inclined from top to bottom toward the guide member; or the first linkage part and the second linkage part are inclined from top to bottom toward each other; When the second linkage part moves along the guide member until the first linkage part extends horizontally, the filter element covers the sewage outlet, and the second linkage part tilts from top to bottom in a direction away from the first linkage part.

[0008] In some embodiments, the filter element and the first linkage portion are spaced apart and parallel to each other; The length of the second linkage portion is L1, and the straight-line distance between the bottom end of the filter element and the connection point between the linkage element and the fixing element is L2, wherein L1=L2.

[0009] In some embodiments, before the second linkage portion contacts the guide member, the filter element tilts from top to bottom toward the guide member, and the bottom end of the filter element and the end of the second linkage portion away from the first linkage portion are located on the same horizontal plane.

[0010] In some embodiments, the end of the second linkage portion facing away from the first linkage portion is in an arc shape; or A running wheel is provided at an end of the second linkage portion facing away from the first linkage portion, and the running wheel is rotatably connected to the second linkage portion.

[0011] In some embodiments, the first linkage portion is connected to at least two connecting members at intervals, and the filter element is detachably connected to all of the connecting members; The filter element is provided with a card slot, and the card slot is used to engage with the connecting element; or the filter element is provided with a connecting ring, and the connecting element is provided with a hook, and the connecting ring is hooked and connected with the hook.

[0012] In some embodiments, the connecting member can be elastically extended and retracted to elastically support the filter element; The connecting piece is a compression spring.

[0013] In some embodiments, the automatic hole-covering mechanism further comprises an elastic member, the elastic member being fixed between the first linkage portion and the bottom of the material frame, and the elastic member being capable of elastically expanding and contracting as the linkage member rotates; Before the linkage member contacts the guide member, the elastic member is inclined from top to bottom away from the fixing member, and the vertical dimension of the elastic member is smaller than the vertical dimension of the fixing member; The elastic member is a tension spring.

[0014] According to another aspect of the present application, the present application further provides a pressure device, comprising a pressure vessel, a material frame, and the automatic hole-covering mechanism as described above; The pressure vessel has an opening on one side, and a drain outlet communicating with the interior of the pressure vessel is provided at the bottom of the pressure vessel; the material frame is movably coordinated with the pressure vessel to allow entry and exit from the interior of the pressure vessel, the material frame is located above the drain outlet, and is used to hold materials; The filter element of the automatic hole-covering mechanism is arranged at the bottom of the material frame. The filter element can move with the material frame to cover the sewage outlet to achieve filtering, or be separated from the sewage outlet.

[0015] It can be seen from the above technical solutions that the present invention has at least the following advantages and positive effects: In the present invention, the filter element of the automatic hole covering mechanism is arranged on the material frame of the pressure equipment through a fixed part and a linkage part that can rotate relative to each other, and a guide part that cooperates with the linkage part is provided in the pressure vessel of the pressure equipment. This design enables the filter element to enter the pressure vessel as the material frame moves. During the above-mentioned movement process, the second linkage part of the linkage part can cooperate with the inclined guide surface of the guide part, so that the second linkage part can move along the guide surface to produce a vertical displacement, thereby realizing the rotation of the second linkage part relative to the fixed part, thereby driving the first linkage part to rotate to produce a vertical displacement, and the vertical movement direction of the first linkage part is opposite to that of the second linkage part, so that the filter element can rotate downward to cover the sewage outlet, so that the filter element can cover the sewage outlet at the same time during the loading process, and ensure that the filter element always covers the sewage outlet during the high temperature and high pressure treatment of the pressure equipment to avoid material falling and entering the sewage outlet and causing blockage risk to subsequent equipment.

[0016] Alternatively, in the process of the material frame moving to exit the pressure vessel, the second linkage part can cooperate with the inclined guide surface of the guide member, so that the second linkage part can move along the guide surface to produce a vertical displacement, thereby realizing the rotation of the second linkage part relative to the fixed member, thereby driving the first linkage part to produce a vertical displacement, and the vertical movement direction of the first linkage part is opposite to that of the second linkage part, so that the filter element rotates upward to disengage from the sewage outlet and exit to the outside of the pressure vessel. In this way, the filter element can be directly taken out of the pressure vessel during the material removal process, and the filter element can be cleaned, replaced, etc. during the process of changing materials, which is convenient and simple to operate.

[0017] That is, the above design eliminates the need to wait for the pressure inside the pressure vessel to drop and the temperature to drop before removing and placing the filter element, thereby saving time, improving production efficiency, and reducing production energy consumption. In addition, there is no need for manual entry into the pressure vessel to remove and place the filter element, thereby reducing the risk of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 3 is a structural diagram of the automatic hole covering mechanism in this embodiment when it is in the first state.

[0019] Figure 2 2 is a schematic structural diagram of the automatic hole covering mechanism in this embodiment when it is in the second state.

[0020] Figure 3 3 is a schematic structural diagram of the automatic hole covering mechanism in this embodiment when it is in the third state.

[0021] Figure 4 2 is a diagram showing the movement process of the automatic hole covering mechanism in this embodiment.

[0022] The following are the descriptions of the reference numerals: 100. Pressure vessel; 200. Material frame; 300. Drain pipe; 400. Automatic hole-covering mechanism; 1. Filter element; 2. Connecting rod assembly; 21. Fixing element; 22. Linking element; 221. First linkage part; 222. Second linkage part; 23. Rotating shaft; 3. Guide element; 31. Guide surface; 4. Connecting element; 5. Elastic element. DETAILED DESCRIPTION

[0023] Typical embodiments embodying the features and advantages of the present invention are described in detail in the following description. It should be understood that the present invention is capable of various variations in different embodiments without departing from the scope of the present invention, and that the descriptions and illustrations herein are intended to be illustrative rather than limiting.

[0024] In the description of this application, it should be understood that in the embodiments illustrated in the accompanying drawings, indications of directions or positional relationships (such as up, down, left, right, front, and back) are provided solely for the purpose of facilitating the description of this application and simplifying the description. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. These descriptions are appropriate when these components are in the positions shown in the accompanying drawings. If the descriptions of the positions of these components change, these directional indications will also change accordingly.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the described features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0026] The present application provides a pressure device for high-temperature and high-pressure processing of materials, wherein the present application takes an autoclave as an example of the pressure device for explanation.

[0027] The pressure equipment includes a pressure vessel, a material frame and an automatic hole covering mechanism.

[0028] The pressure vessel has an opening on one side, a longitudinal direction of the pressure vessel coincides with a horizontal direction, and the pressure vessel has an opening on one side in the longitudinal direction.

[0029] The opening of the pressure vessel is covered with a container cover, which is detachably connected to the pressure vessel for opening and closing the opening of the pressure vessel. In addition, the container cover is sealed to the pressure vessel.

[0030] The bottom of the pressure vessel is equipped with a drain port, communicating with the interior, for discharging wastewater from the pressure vessel. This location improves drainage efficiency. A drain pipe is located at the drain port, connecting to the outside. The drain pipe protrudes inward from the bottom wall of the pressure vessel, preventing impurities deposited on the bottom wall from entering the pipe and achieving initial filtration.

[0031] The number of sewage outlets can be one or multiple outlets distributed at intervals.

[0032] A filter screen is provided inside the sewage pipe, and a plurality of through holes are provided at intervals on the filter screen. The filter screen is used to further filter the sewage during sewage discharge, and can prevent impurities from flowing to downstream equipment through the sewage pipe during subsequent cleaning of the interior of the pressure vessel. Alternatively, a filter structure is provided on the sewage pipe, and the filter structure is located outside the pressure vessel, and is used to further filter the sewage during sewage discharge. The filter structure is detachably connected to the sewage pipe, which makes it convenient to remove the filter structure from the sewage pipe for cleaning, maintenance or replacement of the filter structure. At the same time, the above design also makes it convenient to install the filter structure on the sewage pipe.

[0033] The material frame is used to hold material. The material frame moves in conjunction with the inner wall of the pressure vessel, enabling movement in and out of the pressure vessel. For example, a guide rail is fixed to the inner wall of the pressure vessel, extending along the length of the pressure vessel. A movable member is provided at the bottom of the material frame, which moves in conjunction with the guide rail to guide and limit the movement of the material frame relative to the pressure vessel. The guide rail is vertically spaced above the bottom of the pressure vessel, such that the material frame, connected to it via the movable member, is spaced above the bottom of the pressure vessel.

[0034] The impurities mentioned above are the materials that fall from the material frame to the bottom of the pressure vessel, and the same applies below.

[0035] Exemplarily, there are two guide rails, which are spaced apart and respectively fixed on the inner wall of the pressure vessel.

[0036] The automatic hole covering mechanism is arranged at the bottom of the material frame. The automatic hole covering mechanism can move with the material frame to cover the sewage outlet to play a filtering role during the sewage discharge process, or detach from the sewage outlet and exit the pressure vessel together with the material frame.

[0037] The following is a detailed description of the specific embodiments of the automatic hole covering mechanism of the present application in conjunction with the accompanying drawings.

[0038] Figure 1 Schematic diagram of the structure of the automatic hole covering mechanism in the first state in this embodiment. Figure 2 Schematic diagram of the structure of the automatic hole covering mechanism in the second state in this embodiment. Figure 3 Schematic diagram of the structure of the automatic hole covering mechanism in the third state in this embodiment. Figure 4 This is a diagram of the movement process of the automatic hole covering mechanism in this embodiment.

[0039] refer to Figures 1 to 4The automatic hole covering mechanism 400 includes a filter element 1, a connecting rod assembly 2 and a guide member 3. The filter element 1 is used to cover the sewage outlet at the bottom of the pressure vessel 100 and realize filtration. The connecting rod assembly 2 includes a fixing member 21 and a linkage member 22. The top of the fixing member 21 is used to connect the bottom of the material frame 200 for holding materials, which is movably matched with the inner wall of the pressure vessel 100, and the bottom end is rotatably connected to the middle part of the linkage member 22. The linkage member 22 includes a first linkage part 221 and a second linkage part 222 that are fixedly connected. The connection point of the first linkage part 221 and the second linkage part 222 coincides with the connection point of the linkage member 22 and the fixing member 21. The first linkage part 221 is connected to the filter element 1. The guide member 3 is fixed to the bottom of the pressure vessel 100 and is spaced apart from the sewage outlet. The top of the guide member 3 is inclined from top to bottom to form a guide surface 31. Among them, the fixing part 21 can move with the translation of the material frame 200, so that the second linkage part 222 can move along the guide surface 31, so that the linkage part 22 rotates relative to the fixing part 21, and drives the filter element 1 to rotate downward to cover the sewage outlet, or rotate upward to separate from the sewage outlet.

[0040] It should be noted that the first state of the automatic hole-covering mechanism 400 described above refers to the state before the second linkage portion 222 of the linkage member 22 contacts the guide member 3. The second state refers to the state when the second linkage portion 222 of the linkage member 22 just moves to contact the guide member 3. The third state refers to the state when the second linkage portion 222 of the linkage member 22 moves along the guide surface 31 of the guide member 3. The first state and the third state are both continuous states within a continuous time range, and the second state is a critical state between the first state and the third state during the transition, which is a transient state.

[0041] In the present application, the filter element 1 of the automatic hole-covering mechanism 400 is arranged on the material frame 200 of the pressure equipment through a fixing member 21 and a linkage member 22 that can rotate relative to each other, and a guide member 3 that cooperates with the linkage member 22 is provided in the pressure vessel 100 of the pressure equipment. This design enables the filter element 1 to move with the material frame 200 and enter the pressure vessel 100. During the above-mentioned movement, the second linkage portion 222 of the linkage member 22 can cooperate with the inclined guide surface 31 of the guide member 3, so that the second linkage portion 222 can move along the guide surface 31. Generate vertical displacement, realize the rotation of the second linkage part 222 relative to the fixed part 21, thereby driving the first linkage part 221 to rotate to generate vertical displacement, and the vertical movement direction of the first linkage part 221 is opposite to that of the second linkage part 222, so that the filter element 1 can be rotated downward to cover the sewage outlet, so that the filter element 1 can cover the sewage outlet at the same time during the loading process, and ensure that the filter element 1 always covers the sewage outlet during the high temperature and high pressure treatment of the pressure equipment to avoid material falling and entering the sewage outlet and causing clogging risks to subsequent equipment.

[0042] Alternatively, in the process of the material frame 200 moving to exit the pressure vessel 100, the second linkage part 222 can cooperate with the inclined guide surface 31 of the guide member 3, so that the second linkage part 222 can move along the guide surface 31 and produce a vertical displacement, thereby realizing the rotation of the second linkage part 222 relative to the fixed member 21, thereby driving the first linkage part 221 to produce a vertical displacement, and the vertical movement direction of the first linkage part 221 is opposite to that of the second linkage part 222, so that the filter element 1 rotates upward to disengage from the sewage outlet and exit to the outside of the pressure vessel 100. In this way, the filter element 1 can be directly taken out of the pressure vessel 100 during the material removal process, and the filter element 1 can be cleaned, replaced, etc. during the material replacement process, which is convenient and simple to operate.

[0043] That is, the above design eliminates the need to wait for the pressure inside the pressure vessel 100 to drop in pressure and temperature before taking out and placing the filter element 1, thereby saving time, improving production efficiency, and reducing production energy consumption. Furthermore, there is no need for manual entry into the pressure vessel 100 to take out and place the filter element 1, thereby reducing the risk of manual operation.

[0044] refer to Figures 1 to 4 The filter element 1 is positioned below the material frame 200 so that it can move in and out of the pressure vessel 100 along with the material frame 200 as the material frame 200 moves relative to the pressure vessel 100. The filter element 1 is provided with a plurality of filter holes spaced apart at intervals. The filter element 1 blocks impurities within the pressure vessel 100, preventing them from entering the drain pipe 300, thereby achieving the purpose of filtering impurities.

[0045] When the automatic hole-covering mechanism 400 is in the first state, the filter element 1 is arranged tilted from top to bottom, and the filter element 1 is spaced apart and positioned above the bottom wall of the pressure vessel 100. Specifically, the filter element 1 is spaced apart and positioned above the drain pipe 300. This design allows the filter element 1 to be suspended within the pressure vessel 100, preventing friction or interference with the bottom of the pressure vessel 100, the top of the drain pipe 300, and the like during movement. This eliminates wear and tear on the filter element 1, the pressure vessel 100, the drain pipe 300, and the like caused by friction, thereby extending the service life of the filter element 1, the pressure vessel 100, the drain pipe 300, and the like.

[0046] In this embodiment, the filter element 1 is a hollow rectangular parallelepiped structure. The bottom area of ​​the filter element 1 is larger than the cross-sectional area of ​​the sewage outlet. This design ensures that even if there is a misalignment during the process of the filter element 1 covering the sewage outlet, the filter element 1 can still fully cover the sewage outlet.

[0047] The bottom of the filter element 1 is adapted to the shape of the bottom wall of the pressure vessel 100 at the sewage outlet so that the filter element 1 can be completely attached to the bottom wall of the pressure vessel 100 when covering the sewage outlet. In this way, the bottom of the filter element 1 can be covered on the top of the sewage pipe 300 and the bottom wall of the pressure vessel 100 to ensure the effectiveness of the filtration.

[0048] Specifically, the filter element 1 comprises a rectangular frame and a mesh secured to the frame. The frame is rectangular, and the mesh is provided with a plurality of filter holes at intervals. The mesh at the bottom of the frame is flexible and deformable. Under the weight of the frame and the mesh at the bottom, it adapts to the shape of the top of the sewage pipe 300 and the bottom wall of the pressure vessel 100, ensuring that it can fully adhere to the bottom wall of the pressure vessel 100 while covering the sewage outlet.

[0049] In other embodiments, the mesh portion at the bottom of the frame extends horizontally and only covers the top of the sewage pipe 300 .

[0050] refer to Figures 1 to 4 The connecting rod assembly 2 is used to connect the filter element 1 to the material frame 200. The connecting rod assembly 2 includes a fixing member 21 and a linkage member 22. The fixing member 21 extends vertically, with the top end of the fixing member 21 connected to the bottom of the material frame 200 and the bottom end rotatably connected to the middle of the linkage member 22. The filter element 1 is connected to the linkage member 22.

[0051] It should be noted that the middle part of the linkage part 22 does not specifically refer to the exact center position of the linkage part 22 along the length direction, but refers to an area within a certain length range including the exact center position of the linkage part 22 along the length direction, but does not include the two end portions of the linkage part 22 in the length direction.

[0052] When the material frame 200 enters the pressure vessel 100 , the fixing member 21 is located in the gap between the two guide rails and can move within the gap along with the movement of the material frame 200 .

[0053] In this embodiment, the linkage member 22 and the fixing member 21 are rotatably connected via the rotating shaft 23 , so that the linkage member 22 can drive the filter element 1 to rotate relative to the fixing member 21 .

[0054] The linkage member 22 includes a first linkage portion 221 and a second linkage portion 222 that are fixedly connected. The connection point between the first linkage portion 221 and the second linkage portion 222 coincides with the connection point between the linkage member 22 and the fixed member 21. In other words, the rotation shaft 23 is located at the connection point between the first linkage portion 221 and the second linkage portion 222.

[0055] Specifically, the first linkage portion 221 is connected to the filter element 1. Furthermore, the first linkage portion 221 is spaced apart and parallel to the filter element 1. This design ensures that when the linkage member 22 drives the filter element 1 to rotate relative to the fixing member 21, the rotation angle of the first linkage portion 221 is synchronized with the rotation angle of the filter element 1. This can, to a certain extent, reduce the spatial range required by the overall structure formed by the linkage member 22 and the filter element 1 during rotation, thereby ensuring that the overall structure formed by the linkage member 22 and the filter element 1 can smoothly achieve the transition between the first state and the third state within the limited space between the material frame 200 and the bottom of the pressure vessel 100.

[0056] In this embodiment, the included angle between the first linkage portion 221 and the second linkage portion 222 is α, where 0°<α<180°.

[0057] In this embodiment, when the automatic hole-covering mechanism 400 is in the first state, the first linkage portion 221 and the second linkage portion 222 are both inclined from top to bottom, thereby achieving a top-to-bottom inclined arrangement of the filter element 1. Specifically, the first linkage portion 221 and the second linkage portion 222 are inclined in the same direction from top to bottom. In other embodiments, the first linkage portion 221 and the second linkage portion 222 are inclined in opposite directions from top to bottom.

[0058] When the second linkage portion 222 drives the first linkage portion 221 to rotate horizontally and extend, the filter element 1 covers the sewage outlet. At this time, the second linkage portion 222 tilts from top to bottom in a direction away from the first linkage portion 221. Because the first linkage portion 221 and the filter element 1 are arranged in parallel and spaced apart, the above design allows the filter element 1 to be in a horizontal position to cover the sewage outlet. This allows the filter element 1 to cover the sewage outlet while also ensuring that the bottom of the filter element 1 is in complete contact with the bottom of the pressure vessel 100, thereby sealing the outer periphery of the sewage outlet, improving the coverage effect of the filter element 1, and ensuring the effectiveness of filtration.

[0059] The length of the second linkage portion 222 is L1, and the straight-line distance between the bottom end of the filter element 1 and the connection point between the linkage portion 22 and the fixing member 21 is L2, where L1 = L2. This design ensures that the bottom end of the filter element 1 and the second linkage portion 222 are located on the same sphere, facing away from the first linkage portion 221. That is, any point on the bottom end of the filter element 1 is cocircular with the end of the second linkage portion 222. This allows the rotation angle of the filter element 1 and the horizontal and vertical displacements caused by the rotation to be synchronized with the second linkage portion 222. This can, to a certain extent, reduce the spatial range required by the overall structure formed by the linkage portion 22 and the filter element 1 during rotation, ensuring that the overall structure formed by the linkage portion 22 and the filter element 1 can smoothly transition between the first and third states within the limited space between the material frame 200 and the bottom of the pressure vessel 100, thereby improving the accuracy of the automatic hole-covering mechanism 400 in covering the sewage outlet. The bottom end of the filter element 1 in the upward-to-downward tilted state herein refers to its lowest point.

[0060] Moreover, when the automatic hole covering mechanism 400 is in the first state, the bottom end of the filter element 1 arranged tilted from top to bottom and the end of the second linkage part 222 facing away from the first linkage part 221 are located on the same horizontal plane, which can minimize the interference between the filter element 1 and the bottom of the pressure vessel 100.

[0061] In this embodiment, the length of the first linkage part 221 is greater than the length of the second linkage part 222. This design can ensure that there is a gap between the connection points of the filter element 1 and the first linkage part 221 and the second linkage part 222, and can ensure that the above conditions are met between the filter element 1 and the second linkage part 222 when the automatic hole covering mechanism 400 is in the first state.

[0062] Of course, in other embodiments, the first linkage portion 221 and the second linkage portion 222 may be of equal length, or the length of the first linkage portion 221 may be smaller than the length of the second linkage portion 222 .

[0063] In this embodiment, the end of the second linkage portion 222 away from the first linkage portion 221 is arc-shaped. In other embodiments, the end of the second linkage portion 222 away from the first linkage portion 221 is provided with a running wheel, and the running wheel is rotatably connected to the second linkage portion 222.

[0064] refer to Figures 1 to 4In this embodiment, the guide member 3 is fixed to the bottom of the pressure vessel 100 and is spaced apart from the sewage outlet. The top of the guide member 3 is inclined from top to bottom to form a guide surface 31. Among them, the guide surface 31 of the guide member 3 is used to cooperate with the movement of the second linkage part 222, that is, in the process of the fixing member 21 moving with the translation of the material frame 200, the second linkage part 222 can move to contact the guide surface 31 and can move along the guide surface 31. Since the guide surface 31 is inclined from top to bottom, in the process of the second linkage part 222 moving along the guide surface 31, in addition to being able to generate horizontal displacement to adapt to the translation displacement of the material frame 200, the second linkage part 222 can also generate vertical displacement, realizing the rotation of the second linkage part 222 relative to the fixing member 21, thereby driving the first linkage part 221 to rotate to generate vertical displacement, and the vertical movement direction of the first linkage part 221 is opposite to that of the second linkage part 222, thereby driving the filter element 1 to rotate downward to cover the sewage outlet, or rotate upward to disengage from the sewage outlet.

[0065] At this time, the design of the angle α between the first linkage part 221 and the second linkage part 222 can reduce the distance between the opposite ends of the first linkage part 221 and the second linkage part 222, thereby reducing the distance that the linkage part 22 moves along the inclined guide surface 31, which is beneficial to reducing the space occupied by the entire automatic hole covering mechanism 400, making the automatic hole covering mechanism 400 more compact and simplified.

[0066] In addition, the end of the second linkage part 222 away from the first linkage part 221 is designed to be an arc or a walking wheel, which can reduce the friction force experienced by the second linkage part 222 when it moves relative to the guide surface 31, thereby reducing the wear of the second linkage part 222 and extending the service life of the linkage part 22.

[0067] Specifically, the setting position of the guide member 3 and the inclination angle of the inclined surface are determined according to actual conditions to ensure that when the second linkage part 222 moves along the guide member 3 to make the first linkage part 221 extend horizontally, the filter element 1 covers the sewage outlet, and the material frame 200 completely enters the pressure vessel 100 and moves into place.

[0068] refer to Figures 1 to 4 The automatic hole covering mechanism 400 further includes at least two connecting members 4 for realizing the connection between the first linkage portion 221 and the filter element 1 .

[0069] Among them, all the connecting parts 4 are arranged at intervals on the first linkage part 221, and the filter element 1 is detachably connected to all the connecting parts 4, so that the filter element 1 can be removed from the linkage part 22 to facilitate subsequent cleaning, maintenance, replacement and other operations, and also facilitate the installation operation of the filter element 1 and the linkage part 22.

[0070] For example, the filter element 1 is provided with a card slot, which is used to engage with the connector 4. Alternatively, the filter element 1 is provided with a connecting ring, and the connector 4 is provided with a hook, and the connecting ring is hooked to the hook.

[0071] In this embodiment, the connecting member 4 can be elastically expanded and contracted to elastically support the filter element 1. Specifically, the connecting member 4 is a compression spring, which is mainly deformed by compression.

[0072] The sum of the length of the compression spring in a naturally extended state, the length of the fixing member 21 , and the height of the filter element 1 is greater than the straight-line distance between the material frame 200 and the bottom wall of the pressure container 100 . When the second linkage part 222 rotates to rotate the first linkage part 221 to extend horizontally, the filter element 1 covers the sewage outlet, and since the connection point of the first linkage part 221 and the second linkage part 222 coincides with the connection point of the linkage part 22 and the fixing part 21, that is, the first linkage part 221 in the horizontal extension state and the bottom end of the fixing part 21 are located at the same height position in the vertical direction, at this time, the sum of the length of the compression spring in the natural telescopic state and the height of the filter element 1 will be greater than the straight-line distance between the bottom end of the fixing part 21 and the bottom wall of the pressure vessel 100, which makes the filter element 1 cover the sewage outlet. The connector 4 is in a compressed state and undergoes elastic deformation, and can elastically press the filter element 1 and press the filter element 1 tightly at the sewage outlet and the bottom wall of the pressure vessel 100; and when there is an error in the matching relationship between the second linkage part 222 and the guide surface 31, the design of the connector 4 can also effectively tolerate errors, so that the filter element 1 can always maintain a tight pressure state with the bottom wall of the pressure vessel 100 without gaps or damage, thereby ensuring the effectiveness of filtration.

[0073] In this embodiment, the automatic hole covering mechanism 400 further includes an elastic member 5 , which is fixed between the first linkage portion 221 and the bottom of the material frame 200 . The elastic member 5 can elastically expand and contract as the linkage member 22 rotates.

[0074] Among them, before the linkage part 22 contacts the guide part 3, the elastic part 5 tilts from top to bottom away from the fixed part 21, and the vertical dimension of the elastic part 5 is smaller than the vertical dimension of the fixed part 21. This design utilizes the elastic properties of the elastic part 5 to lift the first linkage part 221 upward to balance the downward pulling force applied by the filter element 1 to the first linkage part 221, so that when the second linkage part 222 is not in contact with the guide part 3, the filter element 1 can maintain a tilted state from top to bottom and be located above the bottom wall of the pressure vessel 100, and be in a suspended state.

[0075] In this embodiment, the elastic member 5 is a tension spring, that is, the elastic member 5 is deformed mainly by stretching.

[0076] Furthermore, the length of the elastic member 5 in its naturally extended state is shorter than the length of the fixing member 21. Since the filter element 1 covers the drain outlet when the second linkage portion 222 rotates to cause the first linkage portion 221 to rotate to a horizontal extension, and since the connection point between the first linkage portion 221 and the second linkage portion 222 coincides with the connection point between the linkage portion 22 and the fixing member 21, that is, the bottom ends of the first linkage portion 221 and the fixing member 21 in the horizontally extended state are located at the same vertical height, when the filter element 1 covers the drain outlet, the elastic member 5 is in a stretched state and elastically deforms to adapt to the movement of the first linkage portion 221.

[0077] In this embodiment, the filter element 1, the fixing element 21, the linkage element 22, the rotating shaft 23, the guide element 3, the connecting element 4 and the elastic element 5 are all made of stainless steel, which has the effects of high temperature resistance and corrosion resistance, so as to improve the service life of the automatic hole covering mechanism 400.

[0078] It should be noted that when there are multiple drain outlets, there are multiple automatic hole-covering mechanisms 400, and the multiple automatic hole-covering mechanisms 400 are arranged in a one-to-one correspondence with the multiple drain outlets. Specifically, when the distribution direction of the multiple drain outlets is parallel to the movement direction of the material frame 200, in order to avoid interference between the successive automatic hole-covering mechanisms 400, the guide blocks and linkage members 22 of the automatic hole-covering mechanisms 400 can be arranged in a laterally staggered manner.

[0079] An exemplary embodiment of the specific configuration of the automatic hole-covering mechanism 400 is listed as follows: The guide member 3 and the drain outlet are spaced apart along the length direction of the pressure vessel 100, and the guide member 3 is located on the side of the drain outlet away from the opening of the pressure vessel 100. The guide surface 31 of the guide member 3 is inclined from top to bottom toward the drain outlet.

[0080] The top end of the fixing member 21 is connected to the bottom of the material frame 200 , and the bottom end of the fixing member 21 is rotatably connected to the linkage member 22 via a rotating shaft 23 .

[0081] The linkage member 22 includes a first linkage portion 221 and a second linkage portion 222 fixedly connected as one body. The connection point between the first linkage portion 221 and the second linkage portion 222 coincides with the connection point between the fixed member 21 and the linkage member 22. The second linkage portion 222 is located on the side of the first linkage portion 221 facing away from the opening of the pressure vessel 100. Since the guide member 3 is located on the side of the sewage outlet facing away from the opening of the pressure vessel 100, the second linkage portion 222 enters the interior of the pressure vessel 100 first and contacts the guide surface 31 of the guide member 3, thereby preventing the guide member 3 from interfering with the movement of the filter element 1.

[0082] The angle between the first linkage portion 221 and the second linkage portion 222 is an obtuse angle. Specifically, when the automatic hole covering mechanism 400 is in the first state, the first linkage portion 221 and the second linkage portion 222 are both tilted from top to bottom toward the guide block, causing the filter element 1 to tilt from top to bottom toward the guide block.

[0083] When the filter element 1 is in a state of being moved horizontally, the filter element 1 is rotated downwardly to cover the sewage outlet. At this time, the material frame 200 completely enters the pressure vessel 100 and moves into place and stops moving horizontally. The fixing member 21, linkage member 22, guide member 3, elastic member 5 and connecting member 4 in the static state cooperate to make the above structures in a balanced static state, so that the filter element 1 is pressed tightly against the sewage outlet and can maintain the pressed state.

[0084] Alternatively, in the process of the material frame 200 moving to exit the pressure vessel 100, the second linkage part 222 can move from top to bottom along the guide surface 31, so that the second linkage part 222 produces a vertical displacement, and the second linkage part 222 is rotated downward relative to the fixing member 21, thereby driving the first linkage part 221 to lift up, so that the filter element 1 rotates upward to disengage from the sewage outlet, and then under the cooperation of the fixing member 21, the linkage member 22, the guide member 3, the elastic member 5 and the connecting member 4, the filter element 1 is reset, that is, it maintains a state of being inclined from bottom to top toward the opening of the pressure vessel 100, and exits the pressure vessel 100 as the material frame 200 moves.

[0085] While the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are intended to be illustrative and exemplary rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope of the appended claims. All changes and modifications that fall within the scope of the claims or their equivalents are intended to be covered by the appended claims.

Claims

1. An automatic hole covering mechanism, characterized in that: include: A filter element, which is used to cover the sewage outlet at the bottom of the pressure vessel and achieve filtration; A connecting rod assembly comprising a fixed member and a linkage member, wherein the top end of the fixed member is used to connect to the bottom of a material frame for containing materials that is movably engaged with the inner wall of the pressure vessel, and the bottom end is rotatably connected to the middle portion of the linkage member; the linkage member comprises a first linkage portion and a second linkage portion that are fixedly connected, and the connection point between the first linkage portion and the second linkage portion coincides with the connection point between the linkage member and the fixed member; the first linkage portion is connected to the filter element; A guide member is fixed to the bottom of the pressure vessel and spaced apart from the sewage outlet; the top of the guide member is inclined from top to bottom to form a guide surface; The fixing member can move with the translation of the material frame, so that the second linkage part can move along the guide surface, so that the linkage member can rotate relative to the fixing member, thereby driving the filter element to rotate downward to cover the sewage outlet, or rotate upward to disengage from the sewage outlet.

2. The automatic hole covering mechanism according to claim 1, characterized in that: Before the linkage member contacts the guide member, the filter member is arranged obliquely from top to bottom and is spaced above the bottom wall of the pressure container.

3. The automatic hole covering mechanism according to claim 1, characterized in that: The angle between the first linkage portion and the second linkage portion is α, 0°<α<180°; The length of the first linkage portion is greater than that of the second linkage portion; Before the second linkage part contacts the guide member, the first linkage part and the second linkage part are both inclined from top to bottom toward the guide member; or the first linkage part and the second linkage part are inclined from top to bottom toward each other; When the second linkage part moves along the guide member until the first linkage part extends horizontally, the filter element covers the sewage outlet, and the second linkage part tilts from top to bottom in a direction away from the first linkage part.

4. The automatic hole covering mechanism according to claim 1, characterized in that: The filter element is parallel to and spaced from the first linkage portion; The length of the second linkage portion is L1, and the straight-line distance between the bottom end of the filter element and the connection point between the linkage element and the fixing element is L2, wherein L1=L2.

5. The automatic hole covering mechanism according to claim 4, characterized in that: Before the second linkage part contacts the guide member, the filter element tilts from top to bottom toward the guide member, and the bottom end of the filter element and the end of the second linkage part away from the first linkage part are located on the same horizontal plane.

6. The automatic hole covering mechanism according to claim 1, characterized in that: The end of the second linkage portion facing away from the first linkage portion is in an arc shape; or A running wheel is provided at an end of the second linkage portion facing away from the first linkage portion, and the running wheel is rotatably connected to the second linkage portion.

7. The automatic hole covering mechanism according to claim 1, characterized in that: The first linkage portion is connected to at least two connecting pieces at intervals, and the filter element is detachably connected to all of the connecting pieces; The filter element is provided with a card slot, and the card slot is used to engage with the connecting element; or the filter element is provided with a connecting ring, and the connecting element is provided with a hook, and the connecting ring is hooked and connected with the hook.

8. The automatic hole covering mechanism according to claim 7, characterized in that: The connecting member can be elastically extended and retracted to elastically support the filter member; The connecting piece is a compression spring.

9. The automatic hole covering mechanism according to claim 1, characterized in that: The automatic hole-covering mechanism further includes an elastic member, which is fixed between the first linkage portion and the bottom of the material frame, and can elastically expand and contract as the linkage portion rotates; Before the linkage member contacts the guide member, the elastic member is inclined from top to bottom away from the fixing member, and the vertical dimension of the elastic member is smaller than the vertical dimension of the fixing member; The elastic member is a tension spring.

10. A pressure device, characterized in that: It comprises a pressure vessel, a material frame and the automatic hole covering mechanism according to any one of claims 1 to 9; The pressure vessel has an opening on one side, and a drain outlet communicating with the interior of the pressure vessel is provided at the bottom of the pressure vessel; the material frame is movably coordinated with the pressure vessel to allow entry and exit from the interior of the pressure vessel, the material frame is located above the drain outlet, and is used to hold materials; The filter element of the automatic hole-covering mechanism is arranged at the bottom of the material frame. The filter element can move with the material frame to cover the sewage outlet to achieve filtering, or be separated from the sewage outlet.

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