Connecting structure of hydrogen fluoride gas-guide tube

Abstract

The utility model provides a connecting structure of a hydrogen fluoride gas-guide tube, which belongs to the technical field of hydrogen fluoride processing and is characterized in that a plurality of rollers are arranged at the lower end of a moving device; the washing tower is arranged on the moving device; one end of the gas-guide tube is communicated with the washing tower, and the other end of the gas-guide tube is communicated with the reaction furnace; the supporting device is arranged in the air guide pipe; the driving device is arranged on the moving device, a spiral conveying shaft is arranged at the driving end of the driving device, the spiral conveying shaft sequentially penetrates through the washing tower and the gas guide pipe and extends into the reaction furnace, and the supporting device is used for supporting the spiral conveying shaft; according to the utility model, the driving device and the washing tower are arranged on the moving device, and one end of the spiral conveying shaft is erected on the supporting device, so that when the washing tower needs to be disassembled, the moving device moves, and the spiral conveying shaft is drawn out from the supporting device; therefore, the materials on the gas guide pipe, the washing tower and the spiral conveying shaft can be cleaned more conveniently.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen fluoride processing technology, specifically to a connection structure for a hydrogen fluoride gas delivery pipe. Background Technology

[0002] In the converter process for producing hydrogen fluoride, the converter and scrubbing tower are connected via a gas inlet pipe. As the reactants continuously tumble within the converter, dust is drawn into the gas inlet pipe along with the hydrogen fluoride gas under negative pressure and deposits inside. Over time, this deposit can easily cause blockages in the pipes. If not cleaned promptly, it will disrupt the system's negative pressure, affecting the production process and potentially leading to abnormal pressure increases within the converter, thus causing safety accidents.

[0003] Chinese patent document CN203791278U discloses a cleaning device for the gas duct of a hydrogen fluoride reaction converter, comprising: a gas duct with both ends connected to a scrubbing tower and a reaction converter, respectively. It also includes a motor or manual wheel, a shaft, and a spiral blade. One end of the shaft is driven by the motor or manual wheel, and the other end extends through the scrubbing tower into the gas duct and is positioned at the port of the gas duct via a bracket. The shaft is fixedly connected to the scrubbing tower wall and the bracket via bearings. Rotation of the motor or manual wheel causes the shaft to rotate. The spiral blade is fixed to the shaft surface by a connecting rod, creating a gap between the spiral blade and the shaft.

[0004] However, in the existing technology, materials are pushed into the reactor by spiral blades. Some stubborn materials on the tube wall still cannot be cleaned, and manual cleaning of the inside of the tube is required. Disassembling the gas guide tube is also quite complicated, requiring the disassembly of various connections one by one, which is a rather cumbersome process. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the shortcomings of the cumbersome disassembly and cleaning of the gas guide tube in the prior art, thereby providing a connection structure for the hydrogen fluoride gas guide tube.

[0006] To solve the above-mentioned technical problems, this utility model provides a connection structure for a hydrogen fluoride gas delivery pipe, including: a moving device, wherein the lower end of the moving device is provided with a plurality of rollers;

[0007] The washing tower is detachably mounted on the mobile device;

[0008] A gas guide pipe, one end of which is connected to the washing tower, and the other end of which is connected to the reactor. The gas guide pipe is detachably connected to the washing tower.

[0009] A support device is installed inside the air duct;

[0010] A driving device is mounted on the mobile device. The driving end of the driving device is provided with a spiral conveying shaft. The spiral conveying shaft passes through the washing tower and the gas guide pipe in sequence and extends into the reactor. The supporting device is used to support the end of the spiral conveying shaft.

[0011] Preferably, the support device includes a fixing member and a support member, the support member being arranged vertically, one end of the support member being connected to the fixing member, and the other end being connected to the inner wall of the air guide tube.

[0012] Preferably, the fixing member is arc-shaped, and the center of the fixing member is set upward in the vertical direction.

[0013] Preferably, the moving device includes a driving member and a fixed base, wherein a plurality of rollers are provided on the lower end face of the fixed base, and the driving end of the driving member is connected to the rollers.

[0014] Preferably, the fixed base is provided with a plurality of counterweights.

[0015] Preferably, the fixing base is provided with a receiving cavity, one side of which is open, and the counterweight is disposed in the receiving cavity.

[0016] Preferably, a rotating door is rotatably provided at the opening of the receiving cavity.

[0017] Preferably, a support arm extends vertically upward from the fixed base, and the upper end of the support arm abuts against the lower end of the washing tower.

[0018] Preferably, the washing tower is provided with a first connector extending radially outward along the spiral conveying shaft, and the air guide pipe has a second connector that cooperates with the first connector. Fasteners pass through the first connector and the second connector in sequence to fix the first connector and the second connector.

[0019] Preferably, the first connector and the second connector are clamped with a sealing element.

[0020] The technical solution of this utility model has the following advantages:

[0021] 1. The connection structure of the hydrogen fluoride gas guide pipe provided by this utility model involves setting the driving device and the washing tower on the moving device, and placing one end of the screw conveyor shaft on the supporting device. When it is necessary to disassemble the washing tower, the gas guide pipe is disconnected from the washing tower. Then, the moving device is driven to move outward along the axial direction of the gas guide pipe, thereby pulling the screw conveyor shaft out of the supporting device, which makes it easier to clean the gas guide pipe, the washing tower, and the material on the screw conveyor shaft.

[0022] 2. The connection structure of the hydrogen fluoride gas delivery pipe provided by this utility model is to set a fixing member at the upper end of the support member, and the spiral conveying shaft is set on the upper end surface of the fixing member, thereby preventing the end of the spiral conveying shaft from sinking.

[0023] 3. The connection structure of the hydrogen fluoride gas conduit provided by this utility model, by setting the fixing part as an arc-shaped plate, can better fit with the screw conveyor shaft, thereby effectively fixing it when the screw conveyor shaft rotates. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a front view of the connection structure of the hydrogen fluoride gas delivery pipe provided in one embodiment of the present invention.

[0026] Figure 2 for Figure 1 Enlarged view of part A in the image;

[0027] Figure 3 for Figure 1 Enlarged view of part B in the image;

[0028] Figure 4 for Figure 1 Right view of the support device in the middle.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Roller; 2. Scrubbing tower; 3. Air guide pipe; 4. Fixing component; 5. Support component; 6. Screw conveyor shaft; 7. Fixing base; 8. First connecting component; 9. Second connecting component. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] 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 according to the specific circumstances.

[0034] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0035] The connection structure of the hydrogen fluoride gas pipe 3 provided in this embodiment is used in the hydrogen fluoride processing to quickly disassemble the gas pipe 3 and the washing tower 2, thereby facilitating the cleaning of the gas pipe 3 and the washing tower 2.

[0036] like Figure 1 , Figure 2 The diagram illustrates a specific embodiment of the connection structure for the hydrogen fluoride gas guide pipe 3 provided in this example. It includes: a moving device with several rollers 1 at its lower end, and a washing tower 2 and a gas guide pipe 3 mounted on the moving device. Specifically, the washing tower 2 is detachably mounted on the moving device; the material within the washing tower 2 can be conveyed to the reactor under the action of the screw conveyor shaft 6. One end of the gas guide pipe 3 is connected to the washing tower 2, and the other end is connected to the reactor. The gas guide pipe 3 is detachably connected to the washing tower 2; a support device is installed inside the gas guide pipe 3 to support the end of the screw conveyor shaft 6; a drive device is mounted on the moving device, and the drive end of the drive device is equipped with the screw conveyor shaft 6, which is horizontally positioned. The screw conveyor shaft 6 extends into the reactor through the washing tower 2 and the gas guide pipe 3 in sequence. A sealing device is provided between the gas guide pipe 3 and the reactor; its connection structure is existing technology and will not be described further in this embodiment.

[0037] By mounting the drive unit and washing tower 2 on the moving device, and placing one end of the screw conveyor shaft 6 onto the support device, when installation is required, the moving device is pushed to align the screw conveyor shaft 6 with the air guide pipe 3. The moving device is then moved, pushing the screw conveyor shaft 6 into the air guide pipe 3 and onto the support device. Simultaneously, the washing tower 2 is connected to the air guide pipe 3 to prevent hydrogen fluoride gas leakage from the connection point. When disassembly of the washing tower 2 is required, the connection between the air guide pipe 3 and the washing tower 2 is disconnected. Then, the moving device is driven to move outward along the axial direction of the air guide pipe 3, thereby pulling the screw conveyor shaft 6 out of the support device, making it easier to clean the material on the air guide pipe 3, the washing tower 2, and the screw conveyor shaft 6.

[0038] like Figure 3 As shown, in this embodiment, the support device includes a fixing member 4 and a support member 5. The support member 5 is rod-shaped. The support member 5 is disposed on the inner wall of the air guide pipe 3 and extends radially toward the center. The fixing member 4 is disposed at the end of the support member 5, and the support member 5 is fixedly connected to the fixing member 4. Specifically, the support member 5 is disposed at the lower end of the air guide pipe 3 and extends toward the axis. When the screw conveyor shaft 6 is installed, it rests on the upper end surface of the fixing member 4. When the screw conveyor shaft 6 rotates, it rotates by friction with the upper end surface of the fixing member 4. By setting the fixing member 4 at the upper end of the support member 5, the screw conveyor shaft 6 is disposed on the upper end surface of the fixing member 4, thereby preventing the end of the screw conveyor shaft 6 from sinking. In addition, as an alternative implementation, multiple support members 5 can also be provided, which together abut against the lower end surface of the fixing member 4.

[0039] like Figure 4 As shown, in this embodiment, the fixing member 4 is an arc-shaped sheet, with its center pointing vertically upwards. This means the spiral conveying shaft 6 can fit snugly against the arc of the fixing member 4. The fixing member is made of a wear-resistant material, such as carbon ceramic, to ensure its frictional strength. By making the fixing member 4 an arc-shaped sheet, it can better fit snugly against the spiral conveying shaft 6, effectively fixing it during rotation. Alternatively, as an alternative implementation, the fixing member 4 can be an open-top frame, specifically a rectangular frame with an open top. The spiral conveying shaft 6 is placed inside the rectangular frame through the opening, and the rectangular frame effectively limits and fixes it during rotation. Furthermore, as an alternative implementation, the fixing member 4 can also be made of other wear-resistant materials, such as silicon carbide.

[0040] like Figure 1As shown, in this embodiment, the moving device includes a driving component and a fixed base 7. The driving component is a motor, and the driving end of the motor is connected to the roller 1 via a chain. That is, the motor can drive the roller 1 to rotate, thereby causing the fixed base 7 to reciprocate along the axial direction of the air guide pipe 3, thus making it easier to remove the washing tower 2 and the screw conveyor shaft 6 from the air guide pipe 3 and improving work efficiency. In addition, as an alternative implementation, the roller 1 can also be configured as a steerable roller 1, which can be moved by remote control for easier transfer. In addition, as an alternative implementation, only the fixed base 7 can be provided, with the roller 1 installed at the lower end of the fixed base 7, and the fixed base 7 can be moved by human drive.

[0041] like Figure 1 As shown, in this embodiment, several counterweights are provided on the fixed base 7. Since the washing tower 2 has a significant weight, the presence of counterweights minimizes the area occupied by the fixed base 7, thus making more efficient use of construction space. The distribution of the counterweights optimizes the center of gravity of the washing tower 2, reducing pressure on the foundation structure and lowering overall maintenance costs. The counterweights are designed for easy installation and disassembly, facilitating future maintenance and adjustments. Alternatively, as an alternative implementation, counterweights can be omitted, and the area of ​​the fixed base 7 can be increased to ensure effective support for the washing tower 2.

[0042] like Figure 1 As shown, in this embodiment, a receiving cavity is provided on the side of the fixed base 7 away from the air guide pipe 3. The upper end face of the receiving cavity is open, and the counterweight is detachably installed in the receiving cavity. This ensures that the fixed base 7 can effectively support the washing tower 2 when it needs to be disassembled for maintenance. Alternatively, as an alternative implementation, the receiving cavity may not be provided, and the counterweight may be fixed to the upper end face of the fixed base 7 with bolts. Another alternative implementation is that a groove extends downward from the upper end face of the column, and the counterweight is placed in the groove.

[0043] like Figure 1 As shown, in this embodiment, a rotating door is rotatably installed at the opening of the receiving cavity. Closing the rotating door effectively protects the counterweight, preventing it from detaching from the receiving cavity. A sealing strip is also installed on the edge of the rotating door to prevent the intrusion of external dust and moisture, further enhancing the durability and reliability of the equipment. Alternatively, as an alternative implementation, if the rotating door is not provided, and the opening of the receiving cavity is oriented upwards, the counterweight can still be placed inside the receiving cavity.

[0044] like Figure 1As shown, in this embodiment, a support arm (not shown in the figure) extends vertically upwards from the fixed base 7. The upper end of the support arm abuts against the lower end of the washing tower 2. By providing the support arm, the washing tower 2 is effectively and stably supported, ensuring that it will not tip over during outward movement. The structural design of the support arm increases the load-bearing capacity of the fixed base 7, ensuring stability even under extreme conditions. Specifically, the fixed base 7 has two support arms extending upwards, each supporting the lower end face of the washing tower 2. Alternatively, as an alternative implementation, the number of support arms is not limited; it can be three or four. Alternatively, as an alternative implementation, the support arms can be omitted, and the fixed base 7 can be stabilized using counterweights, which also allows for the movement of the washing tower 2.

[0045] like Figure 2 As shown, in this embodiment, the scrubbing tower 2 is provided with a first connecting member 8 extending radially outward along the spiral conveying shaft 6, and the air guide pipe 3 has a second connecting member 9 that mates with the first connecting member 8. The first connecting member 8 and the second connecting member 9 are flanges, and a sealing element is clamped between them; the sealing element is made of rubber. Fasteners pass through the first connecting member 8 and the second connecting member 9 sequentially and are connected to a nut, thereby fixing the first connecting member 8 and the second connecting member 9. Specifically, the fasteners are bolts. Alternatively, as an alternative implementation, the scrubbing tower 2 and the air guide pipe 3 can also be connected by a compression fitting, which includes a body with a tapered hole, a retaining ring, and a compression nut. When the nut is tightened, the retaining ring deforms and fits tightly against the outer wall of the pipe, thereby achieving a seal. Alternatively, as an alternative implementation, the scrubbing tower 2 can also be connected to the air guide pipe 3 by welding.

[0046] The installation method of the hydrogen fluoride gas delivery pipe 3 connection structure: Four rollers 1 are provided on the lower end face of the fixed base 7. A driving component is connected to the four rollers 1, thereby driving the rollers 1 to move back and forth. A receiving cavity is provided on the upper end face of the fixed base 7, and an opening is provided on the upper end face of the receiving cavity. A rotating door is rotatably connected to the opening. Opening the rotating door allows a counterweight to be placed into the receiving cavity. A motor is provided on the upper end of the fixed base 7, and the motor is connected to the screw conveyor shaft 6 via a coupling. The washing tower 2 is detachably mounted on the fixed base 7. One end of the gas delivery pipe 3 is connected to the washing tower 2, and the other end is connected to the reactor. A first connecting member 8 is provided on the washing tower 2, and a second connecting member 9 is provided on the gas delivery pipe 3. A bolt passes through the first connecting member 8 and the second connecting member 9 and is threadedly connected to a nut. A sealing element is provided between the first connecting member 8 and the second connecting member 9. After the screw conveyor shaft 6 passes through the air guide pipe 3, it is placed on the support device on the air guide pipe 3. That is, the end of the screw conveyor shaft 6 is placed on the upper surface of the fixing member 4. When the screw conveyor shaft 6 rotates, the screw conveyor shaft 6 rotates with friction against the fixing member 4.

[0047] When the scrubbing tower 2 needs to be disassembled, the first connecting piece 8 and the second connecting piece 9 are separated, and a counterweight is placed in the receiving cavity of the fixed base 7 to ensure that the scrubbing tower 2 will not tip over during movement. The drive unit drives the drum to rotate, causing the fixed base 7 to move away from the reactor. This moves the scrubbing tower 2 and the screw conveyor shaft 6 away from the reactor, after which the interior of the scrubbing tower 2 and the interior of the gas guide pipe 3 can be cleaned. When installation is required, the motor drives the roller 1 to rotate, moving the scrubbing tower 2 toward the reactor. When the end of the screw conveyor shaft 6 abuts against the fixed piece 4, the first connecting piece 8 and the second connecting piece 9 fit together. The first connecting piece 8 and the second connecting piece 9 are then fixed with fasteners, completing the installation.

[0048] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A connection structure for a hydrogen fluoride gas delivery pipe, used for connection to a reactor, characterized in that, include: A mobile device, wherein a plurality of rollers (1) are provided at the lower end of the mobile device; The washing tower (2) is detachably mounted on the mobile device; A gas guide pipe (3) is provided, one end of which is connected to the washing tower (2), and the other end of which is connected to the reactor. The gas guide pipe (3) and the washing tower (2) are detachably connected. A support device is installed inside the air duct (3); A driving device is provided on the moving device. The driving end of the driving device is provided with a spiral conveying shaft (6). The spiral conveying shaft (6) passes through the washing tower (2) and the gas guide pipe (3) in sequence and extends into the reactor. The supporting device is used to support the end of the spiral conveying shaft (6).

2. The connection structure of the hydrogen fluoride gas delivery pipe according to claim 1, characterized in that, The support device includes a fixing member (4) and a support member (5). The support member (5) is arranged in a vertical direction. One end of the support member (5) is connected to the fixing member (4), and the other end is connected to the inner wall of the air guide pipe (3).

3. The connection structure of the hydrogen fluoride gas delivery pipe according to claim 2, characterized in that, The fixing member (4) is arc-shaped, and the center of the fixing member (4) is set upward in the vertical direction.

4. The connection structure of the hydrogen fluoride gas delivery pipe according to any one of claims 1-3, characterized in that, The moving device includes a driving member and a fixed base (7). The lower end face of the fixed base (7) is provided with a plurality of rollers (1). The driving end of the driving member is connected to the rollers (1).

5. The connection structure of the hydrogen fluoride gas delivery pipe according to claim 4, characterized in that, The fixed base (7) is provided with several counterweights.

6. The connection structure of the hydrogen fluoride gas delivery pipe according to claim 5, characterized in that, The fixed base (7) is provided with a receiving cavity, one side of which is open, and the counterweight is disposed in the receiving cavity.

7. The connection structure of the hydrogen fluoride gas delivery pipe according to claim 6, characterized in that, A rotating door is provided at the opening of the receiving cavity.

8. The connection structure of the hydrogen fluoride gas delivery pipe according to claim 4, characterized in that, A support arm extends vertically upward on the fixed base (7), and the upper end of the support arm abuts against the lower end of the washing tower (2).

9. The connection structure of the hydrogen fluoride gas delivery pipe according to any one of claims 1-3, characterized in that, The washing tower (2) is provided with a first connector (8) extending radially outward along the spiral conveying shaft (6), and the air guide pipe (3) has a second connector (9) that is connected to the first connector (8). Fasteners pass through the first connector (8) and the second connector (9) in sequence to fix the first connector (8) and the second connector (9).

10. The connection structure of the hydrogen fluoride gas delivery pipe according to claim 9, characterized in that, The first connector (8) and the second connector (9) are clamped with a sealing element.

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