Manufacturing device for cryogenic flat gate valve

Abstract

The utility model relates to the manufacturing device of low temperature flat plate double gate valve, including upper mould and lower mould, the top side middle part of upper mould is established with annular groove, is established with the pouring mouth on the annular groove, the top side of upper mould is provided with the obturator, the top side of lower mould is established with the cavity, the upper mould top is provided with the mould opening and closing spare, the obturator includes the central groove, the utility model relates to the technical field of flat plate double gate valve. The manufacturing device of low temperature flat plate double gate valve, when using, avoid the additional boss of valve seat after forming in the mould, thereby need the step of secondary cutting or grinding subsequently, reach when making the valve seat, reduce the production step, make the valve seat can quickly put into use, improve the manufacturing efficiency of flat plate double gate valve.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flat plate double gate valve, especially to the manufacturing device of low temperature flat plate double gate valve. BACKGROUND

[0002] The structure of low temperature flat plate double gate valve is relatively complex, but is ingenious in design, and mainly comprises key components such as a valve body, a valve seat, a gate plate and a valve rod. Among them, the valve body and the valve seat are usually made of low-temperature resistant materials to ensure that they can still maintain good strength and sealing performance in a low-temperature environment. The gate plate is designed in a flat plate shape and is lifted by the valve rod to realize the opening and closing of the valve.

[0003] In the process of manufacturing the flat plate double gate valve, in order to improve the manufacturing efficiency, one-time molding is usually performed through a mold. The valve seat is a key sealing component of the low temperature flat plate double gate valve and is usually made of wear-resistant and corrosion-resistant materials. A sealing surface is formed between the valve seat and the gate plate, and the sealing of the medium is realized through the compression of the gate plate.

[0004] In the prior art, after the molten liquid metal is poured into the mold, the mold cavity needs to be filled, but at this time, the surface of the finished product may contain certain bumps, so secondary cutting or polishing is required to remove the bumps, thereby increasing the manufacturing time and affecting the processing efficiency. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a manufacturing device for a low temperature flat plate double gate valve, so as to solve the technical problems mentioned in the background.

[0006] The above technical purpose of the utility model is realized through the following technical scheme:

[0007] The manufacturing device for the low temperature flat plate double gate valve comprises an upper mold and a lower mold, an annular groove is formed in the middle part of the top side of the upper mold, a pouring port is formed in the annular groove, a plugging piece is arranged on the top side of the upper mold, a cavity is formed in the top side of the lower mold, and a mold opening and closing piece is arranged above the upper mold;

[0008] The plugging piece comprises a central groove, the central groove is formed in the upper mold, an electric telescopic rod is connected to the top side of the upper mold, the output end of the electric telescopic rod extends into the central groove and is connected to a closing disc, the closing disc is arranged as dynamic sealing in the central groove, a placement groove is formed in the bottom side of the pouring port, a plugging block is slidably connected in the placement groove, a gas rod is connected to the side of the plugging block close to the central groove, the end of the gas rod is inserted into the central groove, and the gas rod is slidably connected in the upper mold, and the gas rod is arranged as dynamic sealing in the upper mold;

[0009] The demolding assembly is arranged in the blocking block.

[0010] In a preferred example, the demolding assembly further comprises a hollow groove arranged in the blocking block, a spring one connected to the inner side wall of the hollow groove, a sliding block connected to the bottom end of the spring one, and a gas rod in tubular shape and in communication with the hollow groove and the center groove.

[0011] In a preferred example, the auxiliary member further comprises an expansion groove arranged on the side of the gas rod close to the center groove, a spring two connected to the inner side wall of the expansion groove, and a blocking piece connected to the end of the spring two away from the blocking rod.

[0012] In a preferred example, the opening and closing member further comprises a plurality of columns fixedly connected to the top side of the lower mold, the top end of the column penetrating through the upper mold and extending above the upper mold, the column being in sliding connection with the upper mold, and a mold closing control member connected to the top end of the column.

[0013] In a preferred example, the mold closing control member further comprises a top plate, the bottom side of the top plate being connected to the plurality of columns, a hydraulic telescopic rod connected to the top of the top plate, the telescopic end of the hydraulic telescopic rod penetrating through the top plate and extending to the side of the electric telescopic rod, and the telescopic end of the hydraulic telescopic rod being connected to the upper mold.

[0014] In a preferred example, the discharge member further comprises an inclined hole arranged in the upper mold, the inclined hole being located above the blocking block, the inclined hole being inclined downward toward the outside of the upper mold, and the inclined hole being in communication with the pouring port.

[0015] In a preferred example, the outside bottom of the upper mold is connected to a receiving edge ring, and the top side of the receiving edge ring is provided with a receiving groove.

[0016] According to another aspect of the present application, a manufacturing method of a low-temperature flat plate double gate valve is provided.

[0017] The manufacturing method of the low-temperature flat plate double gate valve comprises the following steps:

[0018] S101: install the mold on the column, and drive the upper mold and the lower mold to close by the hydraulic telescopic rod;

[0019] S102: inject the molten metal liquid into the annular groove, and flow the molten metal liquid from the position of the pouring port into the cavity on the top side of the lower mold until the molten metal solution overflows the blocking block;

[0020] S103: retract the electric telescopic rod to drive the closure to rise, pull the air rod into the center groove, and pull the blocking block to fit the inner side wall of the pouring port to form a sealed state, and stop the electric telescopic rod;

[0021] S104: the blocking block extrudes the excess molten metal liquid, transports the excess molten metal liquid to the specified position of the specified furnace, and fits the bottom side of the blocking block with the molten metal liquid in the cavity;

[0022] S105: the molten metal liquid is cooled and formed, the electric telescopic rod is started again, the blocking piece is separated from the expansion groove on the air rod, the air in the hollow groove is extracted, the sliding block is adsorbed into the hollow groove, and then the blocking block is adsorbed and fixed to the cooled valve seat;

[0023] S106: the hydraulic cylinder pulls the upper mold and the lower mold to open, and the upper mold also pulls the formed valve seat away from the cavity of the lower mold;

[0024] S107: the electric telescopic rod is elongated to drive the closure disc to increase the air pressure in the hollow groove, and the valve seat is taken off, and the air rod drives the blocking block to reset, the spring one drives the sliding block to reset, and the spring two drives the blocking piece to reset;

[0025] S108: install the valve seat in the specified position in the flat double gate valve, and then install the subsequent parts to complete the manufacturing of the flat double gate valve.

[0026] In summary, the utility model has at least one of the following beneficial technical effects:

[0027] 1. The manufacturing device of the low-temperature flat double gate valve avoids the appearance of additional protrusions of the valve seat after forming in the mold, thereby avoiding the subsequent steps of secondary cutting or grinding, reduces the production steps during the manufacturing of the valve seat, enables the valve seat to be quickly put into use, and improves the manufacturing efficiency of the flat double gate valve.

[0028] 2. The manufacturing device of the low-temperature flat plate double gate valve, when demolding, the electric telescopic rod is contracted again at this time, the sealing disc is driven to rise in the center groove, the air pressure in the center groove is further reduced at this time, the air pressure in the center groove is reduced again, the auxiliary part is adsorbed to be unblocked, then the hollow groove in the sealing block is communicated with the air rod, then the air in the hollow groove is adsorbed, the air pressure in the hollow groove is reduced, the sliding block is adsorbed, the sliding block moves into the hollow groove, the hole at the bottom of the sealing block is adsorbed, the valve seat is adsorbed by the negative pressure in the hollow groove, then the upper mold is driven to rise by the mold opening and closing part, the valve seat in the mold groove is taken out, and the effect of rapid demolding is achieved;

[0029] 3. The manufacturing device of the low-temperature flat plate double gate valve, the expansion groove in the auxiliary part is used for slidingly connecting the blocking piece and the connecting spring, in the demolding process, the air pressure in the center groove is reduced, the blocking piece is preferentially pulled, then the blocking piece is pulled straight to separate from the expansion groove, the air rod is communicated with the center groove, so that the effect of subsequent adsorption of the valve seat is achieved;

[0030] 4. The manufacturing device of the low-temperature flat plate double gate valve, a plurality of columns are connected with the top side of the lower mold, and the upper mold is slidingly connected with the columns, so that the upper mold slides on the columns when the mold is closed and opened, the upper mold is lowered to close the lower mold to close the mold, and the upper mold is raised on the columns to open the mold, so that the valve seat is formed and manufactured, and the closing control part is used to control the rising and falling of the upper mold;

[0031] 5. The manufacturing device of the low-temperature flat plate double gate valve, the hydraulic telescopic rod is used to drive the upper mold to descend, so that the upper mold is combined with the lower mold to achieve the effect of mold closing, so that the metal liquid is poured subsequently to form the valve seat, and the upper mold is directly driven to rise when demolding, so that the demolding effect can be achieved in cooperation with the demolding assembly. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creating labor.

[0033] Figure 1 It is a whole three-dimensional structure schematic view of the manufacturing device of the low-temperature flat plate double gate valve.

[0034] Figure 2 It is an internal structure schematic view of the upper mold of the manufacturing device of the low-temperature flat plate double gate valve.

[0035] Figure 3The utility model discloses a low temperature flat plate double gate valve's manufacturing device's upper die and lower die closing internal structure schematic view.

[0036] Figure 4 The utility model discloses a low temperature flat plate double gate valve's manufacturing device's plugging block structure schematic view.

[0037] Figure 5 The utility model discloses a low temperature flat plate double gate valve's manufacturing device's plugging block and air rod internal structure schematic view.

[0038] In the drawing, 1, upper die, 2, lower die, 3, annular groove, 4, pouring port, 5, plugging piece, 6, cavity, 7, die opening and closing spare, 8, center groove, 9, electric telescopic rod, 10, closing disc, 11, setting groove, 12, plugging block, 13, air rod, 14, demolding assembly, 15, discharge spare, 16, hollow groove, 17, spring one, 18, sliding block, 19, auxiliary spare, 20, expansion groove, 21, spring two, 22, plugging piece, 23, stand, 24, closing control spare, 25, top plate, 26, hydraulic telescopic rod, 27, inclined hole, 28, storage edge ring, 29, storage groove. DETAILED DESCRIPTION

[0039] The utility model makes further detailed instructions in combination with the drawings.

[0040] Embodiment:

[0041] Reference Figures 1-5 The utility model discloses a low temperature flat plate double gate valve's manufacturing device, including upper die 1 and lower die 2, the top side middle part of upper die 1 is seted up with annular groove 3, is seted up with pouring port 4 on the annular groove 3, the top side of upper die 1 is provided with plugging piece 5, the top side of lower die 2 is seted up with cavity 6, the top of upper die 1 is provided with die opening and closing spare 7;

[0042] The plugging piece 5 includes center groove 8, the center groove 8 is seted up in the upper die 1, the top side of upper die 1 is connected with electric telescopic rod 9, the output end of electric telescopic rod 9 extends to the center groove 8 and is connected with closing disc 10, the closing disc 10 is dynamically sealed in the center groove 8, the bottom side of pouring port 4 is seted up with setting groove 11, the setting groove 11 is slidably connected with plugging block 12, one side of plugging block 12 close to center groove 8 is connected with air rod 13, the end of air rod 13 is inserted into the center groove 8, and air rod 13 is slidably connected in the upper die 1, and air rod 13 is dynamically sealed in the upper die 1.

[0043] The plugging block 12 is also provided with demolding assembly 14 for demolding, and the side of upper die 1 is provided with discharge spare 15.

[0044] In use, the upper mold 1 and the lower mold 2 are closed by the mold opening and closing member 7, and then the molten metal solution is poured into the annular groove 3, and the molten metal solution enters the cavity 6 along the pouring port 4, and as the liquid level in the cavity 6 increases, the blocking block 12 is gradually filled, and when the molten metal liquid fills the metal block, the molten metal liquid higher than the discharge member 15 is discharged along the discharge member 15;

[0045] The electric telescopic rod 9 is started, the electric telescopic rod 9 drives the closing disc 10 to move upwards, then the air pressure in the central groove 8 becomes smaller to form negative pressure, so that the air rod 13 is sucked into the central groove 8, and the blocking block 12 is also pulled to block the pouring port 4, and the excess molten metal liquid is squeezed out, so that the excess molten metal liquid is discharged along the discharge member 15;

[0046] The cooling mechanism can be arranged in the lower mold 2, and the molten metal solution is mainly distributed in the lower mold 2, so that the molten metal solution can be cooled.

[0047] When the valve seat is formed by cooling the molten metal liquid, the electric telescopic rod 9 is retracted again to further reduce the air pressure in the central groove 8, so that the demolding assembly 14 adsorbs the valve seat, then the upper mold 1 is driven to rise by the mold opening and closing member 7, so that the demolding assembly 14 adsorbs the valve seat and separates from the cavity, then the electric telescopic rod 9 is elongated to drive the closing disc 10 to descend and increase the air pressure in the central groove 8, so that the demolding assembly 14 releases the adsorption of the valve seat, so that the valve seat can be taken down, the valve seat is quickly manufactured, the additional protruding block is avoided, the subsequent cutting or grinding steps are saved, and the working efficiency is improved.

[0048] In a further preferable embodiment of the utility model, as shown in Figures 2-5 The demolding assembly 14 comprises a hollow groove 16, the hollow groove 16 is arranged in the blocking block 12, a spring 17 is connected to the top side wall in the hollow groove 16, the bottom end of the spring 17 is connected with a sliding block 18, the bottom of the sliding block 18 penetrates through the bottom side wall of the hollow groove 16 and is aligned with the bottom side wall of the blocking block 12, and is a dynamic sealing structure, the air rod 13 is in a tubular structure, the two ends of the air rod 13 are communicated with the hollow groove 16 and the central groove 8 respectively, and an auxiliary member 19 is arranged at the end of the air rod 13 close to the central groove 8.

[0049] In the embodiment, when demolding is performed, the electric telescopic rod 9 is retracted at this time, the closing disc 10 is driven to rise in the central groove 8, the air pressure in the central groove 8 is further reduced at this time, the air pressure in the central groove 8 is reduced again, the auxiliary part 19 is unblocked, the hollow groove 16 in the closing block 12 is communicated with the air rod 13, the air in the hollow groove 16 is adsorbed, the air pressure in the hollow groove 16 is reduced, the sliding block 18 is adsorbed, the sliding block 18 moves into the hollow groove 16, the hole at the bottom of the closing block 12 is adsorbed, the valve seat is adsorbed, the valve seat is adsorbed by the negative pressure in the hollow groove 16, then the upper mold 1 is driven to rise by the mold opening and closing part 7, and the valve seat in the mold groove is taken out, so that the effect of rapid demolding is achieved.

[0050] In the further preferable embodiment of the utility model, Figures 4-5 As shown in the figure, the auxiliary part 19 comprises an expansion groove 20, the expansion groove 20 is arranged on the side of the air rod 13 close to the central groove 8, the inner side wall of the expansion groove 20 is connected with spring two 21, the end of spring two 21 away from the blocking rod is connected with blocking piece 22, the blocking piece 22 is slidingly connected in the expansion groove 20 and is a dynamic seal.

[0051] In the embodiment, the expansion groove 20 in the auxiliary part 19 is used for slidingly connecting the blocking piece 22 and the connecting spring two 21, in the demolding process, the air pressure in the central groove 8 is reduced, the blocking piece 22 is preferentially pulled, then the blocking piece 22 is pulled straight to separate from the expansion groove 20, the air rod 13 is communicated with the central groove 8, so that the effect of subsequent adsorption of the valve seat is achieved.

[0052] When the electric telescopic rod 9 is retracted for the first time, because the air rod 13 is slidingly connected in the upper mold 1, the sliding of the air rod 13 is preferentially pulled by spring two 21 in the expansion groove 20 at this time, after the air rod 13 pulls the blocking block 12 to block the pouring port 4, the air rod 13 is limited by the blocking block 12 at this time, so that the blocking piece 22 in the expansion groove 20 is adsorbed when the electric telescopic rod 9 drives the closing disc 10 to rise again; therefore, the sliding resistance of the air rod 13 in the upper mold is less than the strength of spring two 21 pulling the blocking piece 22; the effect of avoiding the sliding block 18 in the blocking block 12 being adsorbed to move upward in advance, causing the metal liquid to enter the blocking block 12 to cause blockage and resource waste is achieved.

[0053] In the further preferable embodiment of the utility model, Figures 1-2As shown, the opening and closing piece includes a plurality of columns 23, the columns 23 are fixedly connected to the top side of the lower mold 2, the top end of the column 23 passes through the upper mold 1 and extends above the upper mold 1, the column 23 is in sliding connection with the upper mold 1, and the top end of the column 23 is connected with a mold closing control piece 24.

[0054] In the embodiment, the plurality of columns 23 are connected with the top side of the lower mold 2, and the upper mold 1 is in sliding connection with the column 23, so that the upper mold 1 slides on the column 23 during mold closing and mold opening, the upper mold 1 is lowered to close the lower mold 2 for mold closing, and the upper mold 1 is raised on the column 23 to open the lower mold 2, so as to facilitate the forming and manufacturing of the valve seat, and the mold closing control piece 24 is used to control the raising and lowering of the upper mold 1.

[0055] In the further preferable embodiment of the utility model, Figures 1-2 As shown, the mold closing control piece 24 includes a top plate 25, the bottom side of the top plate 25 is connected with a plurality of columns 23, the top of the top plate 25 is connected with a hydraulic telescopic rod 26, the telescopic end of the hydraulic telescopic rod 26 passes through the top plate 25 and extends to the side of the electric telescopic rod 9, and the telescopic end of the hydraulic telescopic rod 26 is connected with the upper mold 1.

[0056] In the embodiment, the hydraulic telescopic rod 26 drives the lowering of the upper mold 1, so that the upper mold 1 is combined with the lower mold 2, the mold closing effect is achieved, the subsequent pouring of the metal liquid for forming the valve seat is facilitated, the upper mold 1 is directly raised during demolding, and the demolding effect can be achieved in cooperation with the demolding assembly 14.

[0057] In the further preferable embodiment of the utility model, Figures 1-3 As shown, the discharge piece 15 includes an inclined hole 27, the inclined hole 27 is arranged in the upper mold 1, the inclined hole 27 is located above the plugging block 12, the inclined hole 27 is inclined downward to the outside of the upper mold 1, and the inclined hole 27 is in communication with the pouring port 4.

[0058] In the embodiment, when the liquid level of the metal liquid in the pouring port 4 is too high, the plugging block 12 is closed in the pouring port 4 at this time, and the excess metal liquid will be extruded above the plugging block 12, and the inclined hole 27 is located at the top side of the plugging block 12, so that the excess metal liquid will flow out of the upper mold 1 along the inclined hole 27, thereby avoiding the plugging of the pouring port 4 caused by cooling in the upper mold 1, and the plugging block 12 is aligned with the bottom of the upper mold 1 after being closed, thereby avoiding the appearance of excess protrusions on the valve seat after manufacturing, so that secondary processing is required, and the manufacturing efficiency of the flat plate double gate valve is affected.

[0059] In further preferable embodiments of the present application, as shown in Figure 1 The outer bottom of the upper mold 1 is connected with a receiving edge ring 28, and the top side of the receiving edge ring 28 is provided with a receiving groove 29.

[0060] In the present embodiment, the receiving edge ring 28 is connected with the outer circumferential side of the upper mold 1, so that the molten metal flowing out of the inclined hole 27 can flow into the receiving groove 29, thereby allowing the excess molten metal to be reused, and avoiding resource waste.

[0061] Embodiment two:

[0062] According to another aspect of the present application, a manufacturing method of a low-temperature flat plate double gate valve is provided.

[0063] The manufacturing method of the low-temperature flat plate double gate valve comprises the following steps:

[0064] S101: The mold is installed on the column 23, and the hydraulic telescopic rod 26 drives the upper mold 1 and the lower mold 2 to close;

[0065] S102: The molten metal liquid is injected into the annular groove 3, and the molten metal liquid flows into the cavity 6 on the top side of the lower mold 2 from the position of the pouring port 4 until the molten metal solution overflows the blocking block 12;

[0066] S103: The electric telescopic rod 9 is retracted to drive the closure to rise, the air rod 13 is pulled into the center groove 8, and the blocking block 12 is pulled to fit the inner side wall of the pouring port 4 to form a sealed state, and the electric telescopic rod 9 is stopped;

[0067] S104: The blocking block 12 extrudes the excess molten metal liquid, which is discharged from the inclined hole 27, transports the excess molten metal liquid to the specified position of the specified furnace, and the bottom side of the blocking block 12 is fitted with the molten metal liquid in the cavity 6;

[0068] S105: The molten metal liquid is cooled and formed, the electric telescopic rod 9 is started again to retract, the blocking piece 22 is separated from the expansion groove 20 on the air rod 13, the air in the hollow groove 16 is extracted, the sliding block 18 is adsorbed into the hollow groove 16, and then the blocking block 12 is adsorbed and fixed to the cooled valve seat;

[0069] S106: The hydraulic cylinder pulls the upper mold 1 and the lower mold 2 to open, and the upper mold 1 also pulls the formed valve seat to separate from the cavity 6 of the lower mold 2;

[0070] S107: The electric telescopic rod 9 is elongated to drive the closure disc 10 to increase the air pressure in the hollow groove 16, and the valve seat is taken down, and the air rod 13 drives the blocking block 12 to reset, the spring 17 drives the sliding block 18 to reset, and the spring 21 drives the blocking piece 22 to reset;

[0071] S108: install the valve seat in a designated position in the flat double gate valve, and then install the subsequent parts to complete the manufacturing of the flat double gate valve.

[0072] In the embodiment, the method can improve the production efficiency of the valve seat when manufacturing the flat double gate valve, avoid reducing the valve seat manufacturing steps, and thus quickly put the valve seat into the installation of the flat double gate valve, thereby improving the manufacturing efficiency of the flat double gate valve.

[0073] The embodiments of the specific implementation are the preferred embodiments of the utility model, not limited to the protection scope of the utility model, so that: all equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A manufacturing apparatus for a low-temperature flat double gate valve, comprising an upper mold (1) and a lower mold (2), characterized in that, The upper mold (1) has an annular groove (3) in the middle of its top side, and an injection port (4) is provided on the annular groove (3). A sealing component (5) is provided on the top side of the upper mold (1). A cavity (6) is provided on the top side of the lower mold (2). A mold opening and closing component (7) is provided above the upper mold (1). The sealing component (5) includes a central groove (8), which is located inside the upper mold (1). An electric telescopic rod (9) is connected to the top side of the upper mold (1). The output end of the electric telescopic rod (9) extends into the central groove (8) and is connected to a sealing disc (10). The sealing disc (10) is dynamically sealed inside the central groove (8). A placement groove (11) is provided on the bottom side of the injection port (4). A sealing block (12) is slidably connected inside the placement groove (11). An air rod (13) is connected to the side of the sealing block (12) near the central groove (8). The end of the air rod (13) is inserted into the central groove (8), and the air rod (13) is slidably connected inside the upper mold (1). The air rod (13) is dynamically sealed inside the upper mold (1). The sealing block (12) is also provided with a demolding component (14) for demolding, and the upper mold (1) is provided with a discharge component (15) on its side.

2. The manufacturing apparatus for the cryogenic flat double gate valve according to claim 1, characterized in that, The demolding assembly (14) includes a hollow groove (16) which is opened inside the sealing block (12). A spring (17) is connected to the top side wall of the hollow groove (16). A sliding block (18) is connected to the bottom end of the spring (17). The bottom of the sliding block (18) passes through the bottom side wall of the hollow groove (16) and is aligned with the bottom side wall of the sealing block (12). It is dynamically sealed. The air rod (13) is tubular. The two ends of the air rod (13) are connected to the hollow groove (16) and the central groove (8) respectively. An auxiliary part (19) is provided at the end of the air rod (13) near the central groove (8).

3. The manufacturing apparatus for the cryogenic flat double gate valve according to claim 2, characterized in that, The auxiliary component (19) includes a groove (20), which is opened on the side of the air rod (13) near the central groove (8). A second spring (21) is connected to the inner wall of the groove (20). A sealing plate (22) is connected to the end of the second spring (21) away from the sealing rod. The sealing plate (22) is slidably connected in the groove (20) and is dynamically sealed.

4. The manufacturing apparatus for the cryogenic flat double gate valve according to claim 3, characterized in that, The opening and closing component includes a plurality of columns (23), the columns (23) are fixedly connected to the top side of the lower mold (2), the top of the columns (23) passes through the upper mold (1) and extends to the top of the upper mold (1), the columns (23) and the upper mold (1) are slidably connected, and the top of the columns (23) is connected to a mold closing control component (24).

5. The manufacturing apparatus for the cryogenic flat double gate valve according to claim 4, characterized in that, The mold closing control component (24) includes a top plate (25), the bottom side of which is connected to a plurality of columns (23), and a hydraulic telescopic rod (26) is connected to the top of the top plate (25). The telescopic end of the hydraulic telescopic rod (26) passes through the top plate (25) and extends to the side of the electric telescopic rod (9). The telescopic end of the hydraulic telescopic rod (26) is connected to the upper mold (1).

6. The manufacturing apparatus for a cryogenic flat double gate valve according to claim 5, characterized in that, The discharge component (15) includes an oblique hole (27), which is opened in the upper mold (1). The oblique hole (27) is located above the sealing block (12). The oblique hole (27) is inclined downward on the outside of the upper mold (1). The oblique hole (27) is connected to the injection port (4).

7. The manufacturing apparatus for a cryogenic flat double gate valve according to claim 6, characterized in that, The outer bottom of the upper mold (1) is connected to a storage ring (28), and a storage groove (29) is provided on the top side of the storage ring (28).

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