Silicon tetrafluoride filling system

Abstract

The utility model provides a silicon tetrafluoride filling system which comprises a conveying device and a cooling filling device, the conveying device comprises a conveying turntable and a conveying belt, the conveying turntable is arranged on the cooling filling device, the conveying belt is arranged outside the cooling filling device, a plurality of steel cylinders are placed on the conveying turntable, and the steel cylinders are arranged on the conveying turntable. A steel cylinder enters the cooling and filling device through the conveying rotary disc, the steel cylinder is filled in the cooling and filling device and then placed on the conveying belt, and the cooling and filling device is sequentially connected with a condenser, a compressor and a silicon tetrafluoride gas cylinder. According to the system, silicon tetrafluoride can be continuously filled into the steel cylinder at a lower temperature, so that the filling efficiency is higher, the filling time is shorter, and the quality stability and the low energy loss are ensured by filling at the lower temperature.

Description

Technical Field

[0001] This utility model belongs to the field of gas filling technology, and in particular relates to a silicon tetrafluoride filling system. Background Technology

[0002] Silicon tetrafluoride has a critical temperature of -14.15℃. According to the "Regulations on Safety Supervision of Gas Cylinders," gases with a critical temperature below -10℃ are considered permanent gases, making silicon tetrafluoride difficult to compress and fill. Currently, the conventional method for filling silicon tetrafluoride involves using a compressor. At atmospheric pressure, silicon tetrafluoride is slowly injected into the cylinder using a 20MPa compressor. Filling stops when the pressure reaches 15MPa. During this process, the cylinder becomes very hot when the pressure reaches approximately 13MPa, with the cylinder temperature even reaching 60℃. According to the "Safety Regulations for Handling, Unloading, Storage and Use of Gas Cylinders" GB / T34525-2017 and the "Safety Technical Regulations for Gas Cylinders" TSG23-2021, the operating temperature of the cylinder should not exceed 60℃, and the compressor reaches a fatigue state, especially during the slow process from 13 to 15MPa. Conventional silicon tetrafluoride filling takes a long time, and the cylinder temperature can easily exceed 60°C, especially in summer when the ambient temperature is high. Filling needs to be paused until the cylinder temperature drops before resuming filling. This method is inefficient, poses a risk to the stability of product quality, and often causes the compressor to work under fatigue, shortening the compressor's lifespan. Utility Model Content

[0003] In view of this, the present invention aims to provide a silicon tetrafluoride filling system, which enables continuous filling of silicon tetrafluoride into steel cylinders at lower temperatures, thereby achieving higher filling efficiency, shorter filling time, and ensuring quality stability and low energy consumption during filling at lower temperatures.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A silicon tetrafluoride filling system includes a conveying device and a cooling filling device. The conveying device includes a conveying turntable and a conveyor belt. The conveying turntable is disposed on the cooling filling device, and the conveyor belt is disposed outside the cooling filling device. Several steel cylinders are placed on the conveying turntable. The steel cylinders enter the cooling filling device through the conveying turntable. After the steel cylinders are filled in the cooling filling device, they are manually placed into the conveyor belt. The cooling filling device is sequentially connected to a condenser, a compressor, and silicon tetrafluoride cylinders.

[0006] Furthermore, the conveying turntable is a barrel body, and the conveying turntable includes a barrel sidewall and a first end face disposed at the lower end and a second end face disposed at the upper end of the barrel sidewall. The barrel sidewall is fixedly disposed by a bracket.

[0007] The first end face is fixedly connected to the side wall of the barrel, and a first opening penetrating the first end face is provided on the first end face;

[0008] A first rotating shaft connected to a first motor is provided at the center of the second end face. The second end face can rotate within the side wall of the barrel under the drive of the first rotating shaft. A plurality of placement holes penetrating the second end face are provided on the second end face. The placement holes are evenly distributed in a circle with the first rotating shaft as the center. A steel cylinder is placed in the placement hole. A sliding hole is provided on the second end face along the radial direction of the second end face and perpendicular to the placement hole. The sliding hole extends from the placement hole to the side wall of the barrel. A protruding groove is provided on the side wall of the barrel corresponding to the sliding hole. A fixing device is provided in the sliding hole to fix and release the steel cylinder. When the fixing device rotates to the groove, the steel cylinder fixed by the fixing device is released, and the released steel cylinder falls from the conveyor turntable into the cooling and filling device through the first opening.

[0009] Furthermore, the cooling and filling device includes a freezer shell, a placement platform, a connecting arm and a second rotating shaft, a refrigeration device and a temperature control device. The freezer shell is fixedly mounted by a bracket. The freezer shell includes a freezer side wall, an upper end cover and a lower end cover. The upper end cover is provided with a second opening corresponding to the first opening. The placement platform is located below the second opening. The placement platform is connected to the second rotating shaft through the connecting arm. The lower end of the second rotating shaft is connected to a second motor. The freezer side wall is provided with an outlet.

[0010] The placement platform includes a base, a spiral sleeve disposed on the base, and a shock-absorbing elastic element disposed at the bottom of the base;

[0011] The cylinder enters the placement platform through the second opening. After filling is completed, the second rotating shaft is rotated to send the cylinder out of the cooling filling device through the outlet.

[0012] The refrigeration device and the temperature control device are mounted on the freezer casing.

[0013] Furthermore, the fixing device includes a compression slider, a compressed elastic element, and a grooved slider connected in sequence. The compression slider and the grooved slider are slidable within the sliding hole and are respectively fixedly connected to both ends of the compressed elastic element. The compression slider contacts the gas cylinder, and the grooved slider slides relative to the inner side of the barrel sidewall, engaging with the groove. When the sliding hole rotates to the groove, the grooved slider pops out into the groove, reducing the pressure of the compression slider on the gas cylinder and releasing it, causing the gas cylinder to fall.

[0014] Furthermore, the compressed elastic element is a spring.

[0015] Furthermore, the extrusion slider has an extrusion surface, which is a cylindrical surface that mates with the outer wall of the gas cylinder.

[0016] Furthermore, the groove slider has a sensing surface that engages with the groove.

[0017] Compared with the prior art, the silicon tetrafluoride filling system of this utility model has the following advantages:

[0018] The silicon tetrafluoride filling system of this invention can continuously enter the cooling filling device for filling via a conveyor turntable. The cooling filling device provides a suitable temperature for filling, which can ensure that the filling process is continuous, with higher filling efficiency, shorter filling time, and ensure quality stability and low energy consumption by filling at a lower temperature. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0020] Figure 1 This is a simplified structural diagram of the two parallel silicon tetrafluoride filling systems described in this embodiment of the present invention during filling.

[0021] Figure 2 This is a simplified structural diagram of the silicon tetrafluoride filling system described in an embodiment of the present invention;

[0022] Figure 3 This is a cross-sectional view of the barrel side wall, the second end face, and the steel cylinder as described in this embodiment of the utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100-Silicon tetrafluoride filling system; 110-Compressor; 120-Condenser; 130-Transfer turntable; 131-Barrel sidewall; 132-First end face; 133-Second end face; 134-First opening; 135-First rotating shaft; 136-Placement hole; 137-Sliding hole; 138-Groove; 139-Fixing device; 1391-Extrusion slider; 1392-Compressed elastic element; 1393-Groove slider; 140-Conveyor belt; 150-Cooling filling device; 151-Refrigerator shell; 152-Placement platform; 153-Connecting arm; 154-Second rotating shaft; 155-Second opening; 160-First motor; 170-Second motor; 180-Cylinder. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] A silicon tetrafluoride filling system 100 includes a conveying device and a cooling filling device 150. The conveying device includes a conveyor turntable 130 and a conveyor belt 140. The conveyor turntable 130 is disposed on the cooling filling device 150, and the conveyor belt 140 is disposed outside the cooling filling device 150. A plurality of steel cylinders 180 are placed on the conveyor turntable 130. The steel cylinders 180 enter the cooling filling device 150 through the conveyor turntable 130. After being filled in the cooling filling device 150, the steel cylinders 180 are manually placed into the conveyor belt 140. The cooling filling device 150 is connected to a condenser 120, a compressor 110, and silicon tetrafluoride cylinders. The temperature inside the cooling filling device 150 is maintained at 23°C-27°C.

[0030] The conveyor turntable 130 is a barrel body, and the conveyor turntable 130 includes a barrel side wall 131 and a first end face 132 disposed at the lower end of the barrel side wall 131 and a second end face 133 disposed at the upper end. The barrel side wall 131 is fixedly disposed by a bracket. The first end face 133 and the barrel side wall 131 are fixedly connected, and a first opening 134 penetrating the first end face 132 is provided on the first end face 132.

[0031] The second end face 133 is centrally located with a first rotating shaft 135 connected to the first motor 160. The second end face 133 can rotate within the barrel sidewall 131 under the drive of the first rotating shaft 135. The second end face 133 has several placement holes 136 penetrating it, evenly distributed in a circle around the first rotating shaft 135. A steel cylinder 180 is placed within each placement hole 136. A sliding hole 137 is formed on the second end face 133 along its radius and perpendicular to the placement holes 136, extending from the placement holes 136 to the barrel sidewall 131. A protruding groove 138 is provided at the sliding hole 137. A fixing device 139 for fixing and releasing the gas cylinder is provided within the sliding hole 137. The fixing device 139 includes a compression slider 1391, a compressed elastic element 1392, and a groove slider 1393 connected in sequence. The compression slider 1391 and the groove slider 1393 can slide within the sliding hole 137 and are respectively fixedly connected to both ends of the compressed elastic element 1392. In this embodiment, the compressed elastic element 1392 is a spring, which allows for adjustment of the distance between the compression slider 1391 and the groove slider 1393 using the spring force. In other embodiments, the compressed elastic element 1392 can also be a rubber rod or other compressible or elongated elastic component, all of which can achieve the technical effect of fixing and releasing the gas cylinder 180 by adjusting the distance between the compression slider 1391 and the groove slider 1393 using elastic force. All of these are within the protection scope of this embodiment.

[0032] The extrusion slider 1391 has an extrusion surface, which is a cylindrical surface that mates with the outer wall of the cylinder 180. The groove slider 1393 has a sensing surface that mates with the groove 138. The extrusion slider 1391 contacts the cylinder 180, the groove slider 1393 slides relative to the inner side of the barrel side wall 131, and the groove slider 1393 mates with the groove 138. When the groove slider 1393 rotates to the groove 138, the groove slider 1393 protrudes into the groove 138 under the action of a spring, the spring is stretched instantaneously, causing the extrusion slider 1391 to pop out in the direction of the spring, thereby releasing the cylinder 180.

[0033] The released cylinder 180 falls from the conveyor turntable 130 into the cooling filling device 150 through the first opening 134. That is, in the initial state, the fixing device 139 fixes the cylinder 180; when the fixing device 139 rotates to the protrusion 138, the fixing device 139 releases the cylinder, at which point the released cylinder 180 passes through the first opening 134 under the action of gravity.

[0034] The cooling and filling device 150 includes a freezer shell 151, a placement platform 152, a connecting arm 153, a second rotating shaft 154, a refrigeration device, and a temperature control device. The freezer shell 151 includes a freezer side wall, an upper end cover, and a lower end cover. The upper end cover is provided with a second opening 155 corresponding to the first opening 134. The placement platform 152 is located below the second opening 155. The placement platform 152 is connected to the second rotating shaft 154 through the connecting arm 153. There are several placement platforms 152, which are arranged in a circle around the second rotating shaft 154. The lower end of the second rotating shaft 154 is connected to a second motor 170. An outlet is provided on the freezer side wall. After the steel cylinder 180 reaches the outlet, the worker carries the steel cylinder 180 filled with silicon tetrafluoride onto the conveyor belt 140 for conveying.

[0035] The placement platform 152 includes a base, a spiral sleeve disposed on the base, and a shock-absorbing elastic element disposed at the bottom of the base;

[0036] The steel cylinder 180 enters the placement platform 152 through the second opening 155, and is then filled. After refilling, the second rotating shaft 154 is rotated to send the steel cylinder 180 out of the cooling filling device 150 through the outlet, and then into the conveyor belt 140.

[0037] The refrigeration device and the temperature control device are installed on the freezer housing 151 to reduce the temperature inside the freezer housing 151 and to achieve temperature control.

[0038] In use, first maintain the condenser 120 at -10 to 0°C, then turn on the compressor 110 for filling. During the filling process, the silicon tetrafluoride heats up due to the work done by the compressed gas, so the temperature of the condenser 120 must be kept below 10°C. The cylinder 180 for filling can be kept at around 25°C. This filling process is continuous, and when the pressure reaches 15 MPa, the entire filling time is about 45-55 minutes, which is much more efficient than the conventional intermittent filling process of 1.5 hours.

[0039] Silicon tetrafluoride cylinders, compressors 110, and condensers 120 can be connected to multiple silicon tetrafluoride filling systems 100 via hoses, as shown in the schematic diagram. Figure 1 .

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A silicon tetrafluoride filling system, characterized in that: The device includes a conveying device and a cooling and filling device (150). The conveying device includes a conveying turntable (130) and a conveyor belt (140). The conveying turntable (130) is set on the cooling and filling device (150), and the conveyor belt (140) is set outside the cooling and filling device (150). Several steel cylinders (180) are placed on the conveying turntable (130). The steel cylinders (180) enter the cooling and filling device (150) through the conveying turntable (130). After the steel cylinders (180) are filled in the cooling and filling device (150), they are placed into the conveyor belt (140). The cooling and filling device (150) is connected in sequence to a condenser (120), a compressor (110), and a silicon tetrafluoride gas cylinder.

2. The silicon tetrafluoride filling system according to claim 1, characterized in that: The conveyor turntable (130) is a barrel body, and the conveyor turntable (130) includes a barrel side wall (131) and a first end face (132) at the lower end and a second end face (133) at the upper end of the barrel side wall (131); The first end face (132) is fixedly connected to the side wall (131) of the barrel, and a first opening (134) is provided on the first end face (132) through the first end face (132); The second end face (133) has a first rotating shaft (135) connected to the first motor (160) with its center facing upward. The second end face (133) can rotate within the side wall (131) of the barrel under the drive of the first rotating shaft (135). The second end face (133) has a plurality of placement holes (136) penetrating the second end face (133). The placement holes (136) are evenly distributed in a circle with the first rotating shaft (135) as the center. A steel cylinder (180) is placed in the placement hole (136). A sliding hole (13) is opened on the second end face (133) along the radial direction of the second end face (133) and perpendicular to the placement hole (136). 7) The sliding hole (137) extends from the placement hole (136) to the barrel side wall (131). A protruding groove (138) is provided on the barrel side wall (131) corresponding to the sliding hole (137). A fixing device (139) is provided in the sliding hole (137) to fix and release the steel cylinder (180). When the fixing device (139) rotates to the groove (138), the steel cylinder (180) fixed by the fixing device (139) is released, and the released steel cylinder (180) falls from the conveyor turntable (130) into the cooling filling device (150) through the first opening (134).

3. The silicon tetrafluoride filling system according to claim 2, characterized in that: The cooling filling device (150) includes a freezer shell (151), a placement platform (152), a connecting arm (153), a second rotating shaft (154), a refrigeration device, and a temperature control device. The freezer shell (151) includes a freezer side wall, an upper end cover, and a lower end cover. The upper end cover is provided with a second opening (155) corresponding to the first opening (134). The second opening (155) is located below the placement platform (152). The placement platform (152) is connected to the second rotating shaft (154) through the connecting arm (153). The lower end of the second rotating shaft (154) is connected to a second motor (170). The freezer side wall is provided with an outlet. The placement platform (152) includes a base, a spiral sleeve disposed on the base, and a shock-absorbing elastic element disposed at the bottom of the base; The cylinder (180) enters the placement platform (152) through the second opening (155). After filling is completed, the second rotating shaft (154) is rotated to send the cylinder (180) out of the cooling filling device (150) through the outlet. The refrigeration device and the temperature control device are mounted on the freezer housing (151).

4. The silicon tetrafluoride filling system according to claim 2, characterized in that: The fixing device (139) includes a compression slider (1391), a compressed elastic element (1392), and a groove slider (1393) connected in sequence. The compression slider (1391) and the groove slider (1393) can slide in the sliding hole (137) and are respectively fixedly connected to the two ends of the compressed elastic element (1392). The compression slider (1391) contacts the steel cylinder (180), and the groove slider (1393) slides relative to the inner side of the barrel sidewall (131). The groove slider (1393) cooperates with the groove (138).

5. The silicon tetrafluoride filling system according to claim 4, characterized in that: The compressed elastic element (1392) is a spring.

6. The silicon tetrafluoride filling system according to claim 4, characterized in that: The extrusion slider (1391) has an extrusion surface, which is a cylindrical surface that mates with the outer wall of the cylinder (180).

7. The silicon tetrafluoride filling system according to claim 4, characterized in that: The groove slider (1393) has a sensing surface that engages with the groove (138).

Images