A stainless steel storage tank with good sealing performance for chemical production

Abstract

This utility model discloses a stainless steel storage tank with good sealing performance for chemical production, including a tank body. A sealing cover is provided on the top of the tank body for sealing. A driving pressing assembly is provided on the surface of the tank body. The driving pressing assembly is used to drive and press down the sealing cover, improving the sealing performance between the sealing cover and the tank body. A connecting rotating assembly is provided on the sealing cover. This utility model achieves automated pressing and releasing of the sealing cover through the driving pressing assembly, replacing the traditional one-by-one bolt tightening operation. The sealing ring at the bottom of the sealing cover, together with the annular positioning block and annular positioning groove at the top of the tank body, form a triple sealing structure. The annular positioning block is embedded in the annular positioning groove for precise positioning, preventing the sealing cover from shifting. The pressing plate applies uniform pressure through the driving pressing assembly, ensuring a tight fit between the sealing ring and the upper edge of the tank body, eliminating local gaps.

Description

Technical Field

[0001] This utility model relates to the field of stainless steel storage tank technology, specifically a stainless steel storage tank with good sealing performance for chemical production. Background Technology

[0002] Chemical production processes refer to the production processes that chemically process raw materials to ultimately obtain valuable products. Due to the diversity of raw materials and products and the complexity of production processes, tens of thousands of chemical production processes have been formed. Looking at the numerous and complex chemical production processes, they are all organically combined by chemical (biological) reactions and several physical operations. After chemical production, storage tanks are needed for storage. Storage tanks are used to store refined chemical substances such as acids, alkalis, alcohols, gases, and liquids. They are used to store liquids or gases. Stainless steel storage tanks are sealed by a top cover, which is usually connected to the stainless steel storage tank by multiple bolts.

[0003] For example, application number CN202321531401.0 discloses a stainless steel storage tank, including a T-shaped support frame, a tank body, a transmission gear, a connecting rod, a fixing block, and a brush. The tank body is located in the middle of the T-shaped support frame, and a connecting end cover is located at the upper end of the tank body. A first motor is connected to the upper part of the connecting end cover, and a rotating shaft is located at the lower part of the first motor. A connecting rod is located at the upper end of the rotating shaft, and a fixing block is connected to the other end of the connecting rod. A brush is located at the end of the fixing block. A second motor is located at the upper end of the T-shaped support frame, and the second motor is connected to the tank body through the transmission gear.

[0004] In the above cases, the top cover and tank body are fixedly connected by multiple bolts. The top cover and tank body need to be fastened with dozens or even hundreds of bolts. During installation or disassembly, each bolt must be tightened or loosened individually. Especially for large storage tanks, the operation is time-consuming and labor-intensive, and it is difficult for a single person to complete. This seriously affects the efficiency of material loading and unloading and storage tank maintenance. When tightening the bolts, uneven force can easily lead to a loose fit between the top cover and the tank body, forming local gaps. After long-term use, the bolts are easily loosened due to vibration and temperature changes, resulting in seal failure and material leakage. Leakage not only causes material loss, but may also cause safety accidents such as explosions and poisoning. Therefore, we provide a stainless steel storage tank with good sealing performance for chemical production. Utility Model Content

[0005] The purpose of this invention is to provide a stainless steel storage tank with good sealing performance for chemical production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a stainless steel storage tank with good sealing performance for chemical production, comprising a tank body, a sealing cover for sealing is provided on the top of the tank body, a driving pressing component is provided on the surface of the tank body, the driving pressing component is used to drive and press down the sealing cover, and improves the sealing performance between the sealing cover and the tank body, a connecting rotating component is provided on the sealing cover, the driving pressing component presses down the sealing cover by means of the connecting rotating component, and the connection with the driving pressing component can be disconnected through the connecting rotating component.

[0007] Preferably, the driving pressing component includes a fixing groove, and there are two fixing grooves respectively opened on the left and right sides of the tank. A servo motor is installed at the bottom of the inner wall of the fixing groove, and a threaded rod is installed at the top of the output shaft of the servo motor. A threaded block is threadedly connected to the surface of the threaded rod.

[0008] Preferably, the driving pressing assembly further includes an annular plate, which is disposed on the surface of the tank and corresponds to the positions of the two threaded blocks. A movable moving plate is disposed on the top of the annular plate and on the surface of the tank, and a pressing plate is disposed on the top of the moving plate and on the surface of the tank.

[0009] Preferably, the connecting rotating assembly includes a mounting block and four rotating blocks. The number of mounting blocks is four and they are respectively disposed on the surface of the sealing cover. The rotating blocks are disposed at the bottom of the lower pressure plate and correspond to the positions of the mounting blocks. A fixed shaft is rotatably connected to the groove at the top of the rotating blocks via a bearing.

[0010] Preferably, a sealing ring is installed at the bottom of the sealing cap and on the surface of the tank, an annular positioning block is installed at the top of the tank, and an annular positioning groove is provided at the bottom of the sealing cap corresponding to the position of the annular positioning block.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model achieves automated pressing and loosening of the sealing cover by driving the pressing component, replacing the traditional bolt tightening operation. When the servo motor drives the threaded rod to rotate, the threaded block drives the moving plate and the pressing plate to rise and fall synchronously. Only the motor needs to be started to complete the pressing or loosening of the sealing cover. The top cover can be opened and closed by a single person. Compared with the traditional bolt connection, it saves operation time and significantly improves opening and closing efficiency. It is suitable for the needs of frequent material loading and unloading and tank cleaning in chemical production. The sealing ring set at the bottom of the sealing cover, together with the annular positioning block and annular positioning groove at the top of the tank, form a triple sealing structure. The annular positioning block is embedded in the annular positioning groove to achieve precise positioning and avoid the sealing cover from shifting. The pressing plate applies uniform pressure by driving the pressing component, so that the sealing ring fits tightly with the upper edge of the tank and eliminates local gaps. The constant output force of the servo motor can ensure stable pressure and avoid the sealing failure caused by uneven force of traditional bolts.

[0013] 2. By setting up a connecting rotating component, this utility model facilitates the release of the driving pressing component from the limiting position of the sealing cover, making it easy to open the sealing cover. The driving pressing component needs to apply pressure to the sealing cover with the help of the connecting rotating component, ensuring that the pressure can be applied evenly. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention;

[0016] Figure 3 This is a three-dimensional cross-sectional view of the driving pressing component and the connecting rotating component of this utility model;

[0017] Figure 4 This is a three-dimensional structural cross-sectional view of the side view of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the tank body and sealing cap of this utility model separated.

[0019] Figure 6 This is a three-dimensional structural diagram of the tank body and sealing cap of this utility model, separated from the bottom view.

[0020] In the diagram: 1. Tank body; 100. Sealing cover; 2. Drive pressing assembly; 21. Fixing groove; 22. Servo motor; 23. Threaded rod; 24. Threaded block; 25. Annular plate; 26. Moving plate; 27. Pressing plate; 3. Connecting rotating assembly; 31. Mounting block; 32. Rotating block; 33. Fixing shaft; 34. Annular block; 35. Annular groove; 36. Annular reinforcing block; 37. Sliding groove; 38. Sliding rod; 39. Sliding block; 4. Sealing ring; 5. Annular positioning block; 6. Annular positioning groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-6 A stainless steel storage tank with good sealing performance for chemical production includes a tank body 1 made of 316 stainless steel. A sealing cover 100 is provided on the top of the tank body 1 for sealing. Two lifting lugs can be welded to the top of the sealing cover 100 to facilitate upward movement of the sealing cover 100 and easy opening of the tank body 1. The bottom of the sealing cover 100 is in contact with the top of the tank body 1. A sealing seal is installed at the bottom of the sealing cover 100 and on the surface of the tank body 1. The sealing ring 4 is fixedly connected to the sealing cap 100 by adhesive. The sealing ring 4 has an interference fit with the inner wall of the tank body 1, and the surface of the sealing ring 4 is in contact with the inner wall of the tank body 1, which improves the sealing performance. The sealing ring 4 fills the gap between the sealing cap 100 and the tank body 1, and achieves zero leakage sealing through elastic deformation. It is made of fluororubber, which can withstand the corrosion of acids, alkalis and organic solvents. The compression is controllable, the compression rate is 20-30%, and the sealing effect is long-lasting. The sealing cap 100 and the sealing ring 4 together achieve the sealing of the tank opening and prevent the material from volatilizing. In case of external impurities entering, an annular positioning block 5 is installed on the top of the tank body 1. The tank body 1 is fixedly connected to the annular positioning block 5 by welding. An annular positioning groove 6 is opened at the bottom of the sealing cover 100 corresponding to the position of the annular positioning block 5. The top of the annular positioning block 5 passes through the annular positioning groove 6 and extends into it to contact the inner wall of the annular positioning groove 6. By setting the annular positioning block 5 and the annular positioning groove 6, it is ensured that the sealing ring 4 is accurately embedded in the sealing surface between the tank body 1 and the sealing cover 100, preventing the sealing cover 100 from failing locally due to vibration or pressure displacement. The annular positioning block 5 and the annular positioning groove 6 cooperate to achieve precise positioning of the sealing cover 100. The annular positioning block 5 is made of 304 stainless steel. A mounting bracket is installed on the surface of the tank body 1. Support legs are installed at the four corners of the bottom of the mounting bracket. The support legs are used to support the entire tank body 1. A discharge pipe connected to the bottom of the tank body 1 is welded thereto. A valve is installed on the discharge pipe. A mounting plate is welded to the left side of the top of the mounting bracket. A control panel is embedded on the left side of the mounting plate.

[0023] A driving and pressing assembly 2 is provided on the surface of the tank body 1. The driving and pressing assembly 2 is used to drive and press down the sealing cover 100, thereby improving the sealing performance between the sealing cover 100 and the tank body 1. The driving and pressing assembly 2 includes two fixing grooves 21, which are respectively opened on the left and right sides of the tank body 1. A servo motor 22 is installed at the bottom of the inner wall of the fixing groove 21. The servo motor 22 is connected to the control panel via wires. The control panel can adjust the operating parameters of the servo motor 22. The two servo motors 22 are driven by the control panel simultaneously. The two servo motors 22 have the same model parameters, which ensures that the two threaded blocks 23 can rotate synchronously, ensuring the stability of the pressing plate 27 when it moves up and down and avoiding jamming. The phenomenon is that the servo motor 22 is fixedly connected to the inner wall of the fixed groove 21 by bolts, and is a forward and reverse motor with self-locking function. The servo motor 22 provides the power source to drive the threaded rod 23 to rotate. By controlling the lifting and lowering of the threaded block 24 through forward and reverse rotation, the pressing or loosening action of the lower pressure plate 27 is realized. It has precise speed control, adjustable lowering force, and a self-locking function. After power failure, it maintains the current position to prevent the sealing cover 100 from loosening. The top of the output shaft of the servo motor 22 is equipped with the threaded rod 23. The output shaft of the servo motor 22 is fixedly connected to the threaded rod 23 by welding. The threaded rod 23 adopts trapezoidal thread or rectangular thread, which has high transmission efficiency and excellent self-locking performance. It does not rotate on its own when there is no external force. To ensure stable downward pressure, the surface is chrome-plated to improve wear resistance and rust prevention. It is made of 45# steel. The threaded rod 23 has a threaded block 24 connected to its surface. The threaded block 24 is made of alloy steel, and its surface slides in contact with the inner wall of the fixing groove 21. The force of the rotational motion of the threaded rod 23 is converted into a force that drives the threaded block 24 to move linearly up and down. Furthermore, because the threaded block 24 slides in contact with the inner wall of the fixing groove 21, and both the threaded rod 23 and the threaded block 24 have the same model, size, and thread pitch, this ensures the stability of the annular plate 25 during its up and down movement, further guaranteeing the stability of the threaded block 24 and providing a guiding effect. The driving downward pressure assembly 2 also includes an annular plate 25, which is installed in the tank body 1. The annular plate 25 is fixedly connected to the inner wall of the tank 1 by welding on the side of the threaded block 24 corresponding to the position of the two threaded blocks 24. The inner wall of the annular plate 25 slides in contact with the surface of the tank 1. A movable moving plate 26 is provided at the top of the annular plate 25 and on the surface of the tank 1. The annular structure of the annular plate 25 is adapted to the shape of the tank 1 and is rigidly connected to the threaded block 24 and the moving plate 26 without loosening gaps, ensuring lossless power transmission. The inner wall of the moving plate 26 slides in contact with the inner wall of the tank 1. A lower pressure plate 27 is provided at the top of the moving plate 26 and on the surface of the tank 1. The annular plate 25, the moving plate 26 and the lower pressure plate 27 are all made of 316 stainless steel. The inner wall of the lower pressure plate 27 slides in contact with the surface of the tank 1.The top and bottom of the movable plate 26 are fixedly connected to the annular plate 25 and the lower pressure plate 27 by welding, respectively. The threaded block 24, through the force transmitted by the annular plate 25 and the movable plate 26, applies downward pressure via the lower pressure plate 27 to press down on the sealing cover 100, improving the sealing performance with the tank body 1 and ensuring tight contact between the sealing cover 100 and the tank body 1.

[0024] The sealing cover 100 is provided with a connecting rotating assembly 3. The driving pressing assembly 2 presses down on the sealing cover 100 with the help of the connecting rotating assembly 3, and the connection with the driving pressing assembly 2 can be released through the connecting rotating assembly 3. The connecting rotating assembly 3 includes a mounting block 31 and four rotating blocks 32. The number of mounting blocks 31 is four and they are respectively arranged on the surface of the sealing cover 100. The mounting blocks 31 are fixedly connected to the sealing cover 100 by welding. The four mounting blocks 31 are evenly distributed circumferentially to ensure that the sealing cover 100 is under balanced force. The welding and fixing to the sealing cover 100 results in high connection strength. They are made of 304 stainless steel. The rotating blocks 32 are located at the bottom of the pressing plate 27 and correspond to the position of the mounting blocks 31. The movable block 32 is in contact with the lower pressure plate 27 on the side closest to the lower pressure plate 27. The rotating block 32 connects the lower pressure plate 27 and the fixed shaft 33, allowing the rotating block 32 to rotate around the fixed shaft 33 while transmitting downward pressure. The lower pressure plate 27 ensures the sealing cover 100 is sealed when connected to the tank body 1 by pressing the rotating block 32 downward. When the lower pressure plate 27 and the rotating block 32 are released, rotating the rotating block 32 causes it to rotate 180 degrees and separate from the lower pressure plate 27, thus releasing the connection between the rotating block 32 and the lower pressure plate 27 and facilitating the opening of the sealing cover 100. The fixed shaft 33 is rotatably connected to the groove at the top of the rotating block 32 via a bearing. The top end of the fixed shaft 33 is fixedly connected to the mounting block 31 by welding. 2. The bearing in the top groove reduces the rotational friction of the fixed shaft 33. The rotating block 32 is made of wear-resistant cast iron. The fixed shaft 33 serves as the rotation center shaft, supporting the rotating block 32 to rotate around it, and simultaneously connecting the mounting block 31 and the rotating block 32. An annular block 34 is installed on the top of the rotating block 32 and on the surface of the fixed shaft 33. The annular block 34 is fixedly connected to the rotating block 32 by welding. The inner wall of the annular block 34 is in rotational contact with the surface of the fixed shaft 33. An annular groove 35 is formed on the surface of the fixed shaft 33. An annular reinforcing block 36 is provided on the inner wall of the annular block 34 at the position corresponding to the annular groove 35, and is in rotational contact with the inner wall of the annular groove 35. The annular reinforcing block 36 is fixedly connected to the annular block 34 by welding. By setting the annular block 34 and the annular groove, 35 and the annular reinforcing block 36 form an axial limiting structure to prevent the rotating block 32 from falling off along the fixed shaft 33. The small clearance does not affect the rotational flexibility and effectively prevents the rotating block 32 from moving up and down, improving the connection stability. Both the annular block 34 and the annular reinforcing block 36 are made of 304 stainless steel. Slide grooves 37 are provided on both the left and right sides of the tank body 1. The top and bottom of the inner wall of the slide groove 37 are fixedly connected by a slide rod 38. The slide rod 38 is fixedly connected to the inner wall of the slide groove 37 by welding. A slider 39 is slidably connected to the surface of the slide rod 38. The slider 39 is fixedly connected to the moving plate 26 by welding. Through the cooperation of the slide groove 37, the slide rod 38 and the slider 39, the moving plate 26 is guided to rise and fall, preventing the lower pressure plate 27 from deviating.This improves the stability of the lower pressure plate 27 during its vertical movement.

[0025] When in use, align the sealing cap 100 with the top opening of the tank body 1, so that the annular positioning groove 6 is precisely fitted into the annular positioning block 5. At this time, the sealing ring 4 is initially in contact with the upper edge of the tank body 1. At this time, the rotating block 32 moves to the bottom of the lower pressure plate 27. Then rotate the rotating block 32 to 180 degrees so that all four rotating blocks 32 correspond to the bottom position of the lower pressure plate 27.

[0026] The servo motor 22 is started via the control panel, and the parameters are set. The servo motor 22 drives the threaded rod 23 to rotate, and the threaded block 24 moves downward along the inner wall of the fixed groove 21, which drives the annular plate 25, the moving plate 26 and the lower pressure plate 27 to descend synchronously. The lower pressure plate 27 contacts the rotating block 32 and applies vertical pressure to the rotating block 32. The pressure is transmitted to the sealing cover 100 through the fixed shaft 33 and the mounting block 31, causing the sealing ring 4 to be squeezed and deformed and enter the interior of the tank 1. The sealing cover 100 contacts the tank 1. When the control panel shows that the pressure has reached the preset value, the servo motor 22 stops running and uses its self-locking function to maintain the pressure and complete the sealing.

[0027] When it is necessary to open the sealing cover 100, drive the servo motor 22 to make the lower pressure plate 27 rise until it is completely separated from the rotating block 32. Manually operate the rotating block 32 to rotate 180° around the fixed shaft 33 so that the rotating block 32 is misaligned with the lower pressure plate 27, thus disconnecting the two. Pull the sealing cover 100 upward to separate it from the tank body 1 to complete the opening state.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stainless steel storage tank with good sealing performance for chemical production, characterized in that: The container includes a tank (1), the top of which is provided with a sealing cap (100) for sealing. A driving pressing assembly (2) is provided on the surface of the tank (1). The driving pressing assembly (2) is used to drive the sealing cap (100) to press down, and improves the sealing performance between the sealing cap (100) and the tank (1). A connecting rotating assembly (3) is provided on the sealing cap (100). The driving pressing assembly (2) presses down the sealing cap (100) by means of the connecting rotating assembly (3), and the connection with the driving pressing assembly (2) can be released by the connecting rotating assembly (3).

2. The stainless steel storage tank with good sealing effect for chemical production according to claim 1, characterized in that: The drive pressing assembly (2) includes a fixing groove (21), there are two fixing grooves (21) and they are respectively opened on the left and right sides of the tank (1). A servo motor (22) is installed at the bottom of the inner wall of the fixing groove (21), and a threaded rod (23) is installed at the top of the output shaft of the servo motor (22). A threaded block (24) is threadedly connected to the surface of the threaded rod (23).

3. The stainless steel storage tank with good sealing effect for chemical production according to claim 2, characterized in that: The drive pressing assembly (2) also includes an annular plate (25), which is disposed on the surface of the tank (1) and corresponds to the positions of the two threaded blocks (24). A movable moving plate (26) is disposed on the top of the annular plate (25) and on the surface of the tank (1). A pressing plate (27) is disposed on the top of the moving plate (26) and on the surface of the tank (1).

4. The stainless steel storage tank with good sealing effect for chemical production according to claim 3, characterized in that: The connecting rotating assembly (3) includes a mounting block (31) and four rotating blocks (32). The number of mounting blocks (31) is four and they are respectively set on the surface of the sealing cover (100). The rotating blocks (32) are set at the bottom of the lower pressure plate (27) and correspond to the position of the mounting block (31). A fixed shaft (33) is rotatably connected to the groove at the top of the rotating block (32) through a bearing.

5. The stainless steel storage tank with good sealing effect for chemical production according to claim 4, characterized in that: A sealing ring (4) is installed at the bottom of the sealing cap (100) and on the surface of the tank body (1). An annular positioning block (5) is installed at the top of the tank body (1). An annular positioning groove (6) is provided at the bottom of the sealing cap (100) and at the position corresponding to the annular positioning block (5).

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