Negative electrode tool for storage tank

Abstract

The utility model relates to the technical field of chemical storage tanks, and discloses a cathode tool for a storage tank, which comprises a storage tank body, and a tank cover is mounted at the top of the storage tank body. A sealing groove is formed in the middle of the inner side wall of the tank cover and used for containing and protecting an internal transmission part. According to the cathode protection device, through cooperative work of the adjusting handle, the transmission rod, the driving bevel gear, the driven bevel gear, the inner threaded sleeve and the lifting threaded rod, the height of the cathode bar can be conveniently and rapidly adjusted, the cathode protection device adapts to various complex working conditions, and effectiveness and adaptability of cathode protection are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical storage tank field technical field especially relates to a negative tool for storage tank. BACKGROUND

[0002] In the chemical industry, storage tanks are widely used to store various liquid or gaseous media. However, the inner wall of the storage tank is easily corroded by the medium during long-term use, especially in some corrosive medium environment, the corrosion problem is more serious. This not only shortens the service life of the storage tank, but also may cause medium leakage, safety accidents and environmental pollution problems.

[0003] At present, the common method to prevent the corrosion of the storage tank is to use cathodic protection technology, that is, by setting a negative tool in the storage tank, the storage tank becomes a cathode, thereby slowing down or preventing its corrosion.

[0004] In industrial production, storage tanks are widely used to store various chemical raw materials, liquids and other substances. However, due to the corrosiveness of the storage medium, the inner wall of the storage tank is easily corroded, which not only reduces the service life of the storage tank, but also may cause safety problems such as medium leakage. The existing cathodic protection tool has many deficiencies in actual use, such as fixed position of the cathode rod, which is difficult to adapt to the demand for cathodic protection under different working conditions. Therefore, the technical personnel in the art provides a negative tool for storage tank to solve the problems existing in the above. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a negative tool for storage tank to solve the technical problem of fixed position of the cathode rod, which is difficult to adapt to the demand for cathodic protection under different working conditions, so as to adjust the height of the cathode rod conveniently and quickly through the cooperation of the adjusting handle, transmission rod, driving bevel gear, driven bevel gear and internal thread sleeve and lifting threaded rod, adapt to various complex working conditions, and greatly improve the effectiveness and adaptability of cathodic protection.

[0006] In order to solve the above technical problem, the utility model provides a negative tool for storage tank, which comprises a storage tank body, and a tank cover installed on the top of the storage tank body. A sealing groove is formed in the middle of the inner side wall of the tank cover, which is used to accommodate and protect the internal transmission components. An internal thread sleeve is connected to the middle of the bottom of the inner side wall of the sealing groove, and a driven bevel gear is installed on the top of the internal thread sleeve. A driving bevel gear is engaged with one side wall of the driven bevel gear, and a transmission rod is connected to the input end of the driving bevel gear. The other end of the transmission rod is connected to the outer side wall of the tank cover, and an adjusting handle is connected to the input end of the transmission rod. By rotating the adjusting handle, the transmission rod can be driven to rotate, and the driving bevel gear can drive the driven bevel gear to rotate the internal thread sleeve.

[0007] Preferably, the female threaded sleeve is threadedly connected with a lifting threaded rod in the middle of the inner side wall, and the lifting threaded rod moves up and down under the action of the thread when the female threaded sleeve rotates.

[0008] Preferably, the bottom of the lifting threaded rod is provided with a connecting plate, and the connecting plate is provided with a cathode rod in the middle of the bottom, so that the height of the cathode rod is adjusted to meet the needs of cathodic protection under different storage media, liquid levels and internal structure changes of the storage tank.

[0009] Preferably, in order to ensure the stability of the cathode rod during lifting and the fixation of the adjusted position, a plurality of fixed grooves are arranged in the middle of the side wall of the connecting plate, and the inner side wall of any one of the fixed grooves is provided with a limiting rod.

[0010] Preferably, the inner side wall of the insulating layer is provided with a fixed block in the middle of the upper end and on both sides of the limiting rod, the two side walls of the fixed block are provided with a limiting groove, the limiting groove is provided with a limiting block in the middle of the inner side wall, and the two side walls of the limiting block are connected with the two ends of the limiting rod. Such a structure design not only limits the rotation of the cathode rod during lifting and ensures its vertical lifting, but also further stabilizes the position of the cathode rod after the height of the cathode rod is adjusted, preventing the cathode rod from being deviated due to the flow impact of the medium in the storage tank.

[0011] Preferably, the inner side wall of the storage tank body is provided with an insulating layer in the middle of the outer side, the cathode rod is connected to the inner side wall of the insulating layer, and the inner side wall of the insulating layer is provided with an anode rod in the middle of the bottom and below the cathode rod.

[0012] Preferably, the outer side wall of the anode rod is provided with a plurality of through holes arranged in an array, which increases the contact area of the anode rod with the electrolyte solution in the storage tank, so that the anode rod can more fully oxidize and release electrons, which are conducted to the cathode rod through the electrolyte solution, thereby realizing cathodic protection of the storage tank body and effectively preventing the storage tank body from being corroded.

[0013] Preferably, the top of the sealing groove is provided with a sealing groove cover plate, which can effectively prevent dust and impurities from entering the sealing groove, protect the internal transmission components and prolong the service life. The side wall of the storage tank body is provided with a feeding port in the middle of the top, which is used for injecting storage medium into the storage tank, and is provided with a discharging port in the middle of the bottom, which is convenient for discharging the medium in the storage tank, meeting the normal storage and use requirements of the storage tank.

[0014] The utility model has the following beneficial effects:

[0015] 1. The utility model discloses, through the cooperative work of adjusting handle, transmission rod, driving bevel gear, driven bevel gear and internal thread sleeve and lifting threaded rod, can conveniently and quickly adjust the height of the cathode rod, adapts to various complex working conditions, greatly improves the effectiveness and adaptability of cathodic protection.

[0016] 2. The utility model discloses, the limiting stability structure that limiting rod, fixed block, limiting groove and limiting block constitute, has guaranteed the stability of cathode rod in the process of lifting and the fixed position after adjustment, effectively avoided the position displacement of cathode rod due to medium flow etc.

[0017] 3. The utility model discloses, the through -hole design of anode rod outside wall has increased the contact area with electrolyte solution, makes anode rod can more fully take place oxidation reaction, improved the cathodic protection effect, prolonged the service life of storage jar body.

[0018] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. DRAWINGS

[0019] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed in the specific embodiment or prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 It is the front view structure schematic diagram of the utility model;

[0021] Figure 2 It is the local explosion structure schematic diagram of lifting cathode rod of the utility model;

[0022] Figure 3 It is Figure 1 The enlarged schematic diagram of A place;

[0023] Figure 4 It is the side view structure schematic diagram of the utility model.

[0024] In the drawing:

[0025] 1. Storage tank body; 2. Tank lid; 3. Sealing groove cover plate; 4. Transmission rod; 5. Adjustment handle; 6. Drive bevel gear; 7. Drive bevel gear; 8. Internal threaded sleeve; 9. Lifting threaded rod; 10. Connecting plate; 11. Cathode rod; 12. Anode rod; 13. Through hole; 14. Fixing block; 15. Limiting groove; 16. Limiting block; 17. Limiting rod; 18. Discharge port; 19. Support leg; 21. Insulation layer; 22. Feed port. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below 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 protection scope of this utility model.

[0027] Example:

[0028] like Figures 1 to 4 As shown, a negative electrode tooling for a storage tank is installed as follows: The tank cover 2 is installed by placing a sealing groove cover plate 3 at the top center of the sealing groove on the inner wall of the tank cover 2 to ensure a good seal and prevent impurities from entering the groove and affecting the operation of subsequent transmission components. One end of a transmission rod 4 is inserted through and rotatably connected to one side of the outer wall of the tank cover 2. An adjusting handle 5 is installed at the input end of the transmission rod 4, ensuring that the adjusting handle 5 is securely installed and rotates freely. A driving bevel gear 6 is installed at the end of the transmission rod 4 located inside the tank cover 2, ensuring that the driving bevel gear 6 is coaxial with the transmission rod 4 and is tightly fixed. An internally threaded sleeve 8 is inserted through and rotatably connected at the bottom center of the inner wall of the sealing groove. Then, a driven bevel gear 7 is installed at the top center of the internally threaded sleeve 8. The positions of the driving bevel gear 6 and the driven bevel gear 7 are adjusted to ensure they mesh with a uniform tooth gap.

[0029] Lifting and Cathode Rod 11 Installation: Screw the lifting threaded rod 9 into the middle position of the inner wall of the internal threaded sleeve 8, ensuring a good thread fit. Install the connecting plate 10 at the middle position of the bottom of the lifting threaded rod 9 and fix it by welding to ensure a firm connection. Install the cathode rod 11 at the middle position of the bottom of the connecting plate 10, and fix it by welding as well, ensuring a good electrical connection between the cathode rod 11 and the connecting plate 10 and that it is vertically downward. Install fixing blocks 14 on both sides of the preset installation position of the limiting rod 17 at the upper middle position of the inner wall of the insulating layer 21. Limiting grooves 15 are opened on the two side walls of the fixing blocks 14 respectively, and the limiting blocks 16 are installed in the middle position of the inner wall of the limiting grooves 15, allowing them to slide freely.

[0030] According to the working condition of the storage tank and the previous calculation, the limiting rod 17 is penetrated through the fixing groove in the middle position of one side wall of the connecting plate 10, and the two ends of the limiting rod 17 are connected with the two side walls of the limiting block 16, so as to preliminarily fix the height and position of the cathode rod 11, and ensure that the cathode rod 11 can smoothly ascend and descend in the inner side wall of the insulating layer 21. The anode rod 12 and the whole storage tank are installed: the insulating layer 21 is installed at the outer side position of the middle inner side wall of the storage tank body 1, so as to ensure firm installation and complete coverage of the predetermined area. According to the design requirement, the anode rod 12 is fixedly installed below the cathode rod 11 at the middle bottom position of the inner side wall of the insulating layer 21. A plurality of through holes 13 are arranged in an array on the outer side wall of the anode rod 12, so as to increase the contact area with the electrolyte solution. The tank cover 2 with all the installed parts is installed back to the top of the storage tank body 1, so as to ensure good sealing and firm connection.

[0031] The feeding port 20 is installed at the top of the middle position of one side wall of the storage tank body 1, and the discharging port 18 is installed at the bottom of the middle position, and the sealing property of each interface is checked.

[0032] Height adjustment test: slowly rotate the adjusting handle 5, observe the rotation of the driving bevel gear 6 driven by the transmission rod 4, and then check whether the driven bevel gear 7 and the inner threaded sleeve 8 rotate smoothly. With the rotation of the inner threaded sleeve 8, the cathode rod 11 is stably lifted and lowered by the lifting threaded rod 9. Through multiple adjustments, the lifting effect of the cathode rod 11 at different heights is tested, so as to ensure that there is no jamming and abnormal noise in the adjustment process, the cooperation of the limiting rod 17 and the fixing groove, the limiting block 16 and the limiting groove 15 is normal, and the position of the cathode rod 11 can be effectively limited and prevented from rotating.

[0033] Cathodic protection performance test: weak acid electrolyte solution is injected into the storage tank to a predetermined liquid level. Using professional electrochemical test instruments, the potential difference between the cathode rod 11 and the anode rod 12, and the potential distribution at different positions of the storage tank body 1 are measured. According to the measured data, it is judged whether the cathodic protection system works normally. Through the test, the potentials of all parts of the storage tank body 1 are within the effective potential range of cathodic protection, which indicates that the anode rod 12 normally occurs oxidation reaction, the released electrons are conducted to the cathode rod 11 through the electrolyte solution, and then the storage tank body 1 is protected.

[0034] In summary: when the height of the cathode rod 11 needs to be adjusted, the adjusting handle 5 is rotated. The adjusting handle 5 drives the transmission rod 4 to rotate, and the other end of the transmission rod 4 is connected to the driving bevel gear 6, which is rotated. Since the driving bevel gear 6 is in mesh with the driven bevel gear 7, the driven bevel gear 7 also begins to rotate. The driven bevel gear 7 is installed at the top of the inner threaded sleeve 8, so the inner threaded sleeve 8 rotates. The inner wall of the inner threaded sleeve 8 is in threaded connection with the lifting threaded rod 9. With the rotation of the inner threaded sleeve 8, the lifting threaded rod 9 moves up and down along the axial direction of the inner threaded sleeve 8 under the action of the thread, and then drives the bottom connecting plate 10 and the cathode rod 11 to realize lifting, so that the height of the cathode rod 11 can be flexibly adjusted according to the working condition requirements in the storage tank.

[0035] The limiting and stabilizing mechanism: a plurality of fixed grooves are arranged on one side wall of the connecting plate 10, and the limiting rod 17 penetrates one of the fixed grooves to achieve preliminary positioning. The fixed blocks 14 are installed on the inner side wall of the insulating layer 21 at the upper end and located on both sides of the limiting rod 17. Limiting grooves 15 are arranged on the two side walls of the fixed blocks 14, and the limiting blocks 16 slide in the limiting grooves 15, and the two side walls of the limiting blocks 16 are connected with the two ends of the limiting rod 17. When the cathode rod 11 is lifted, the limiting rod 17 drives the limiting block 16 to slide in the limiting groove 15, which on the one hand limits the rotation of the connecting plate 10 and the cathode rod 11, and on the other hand, the fixed grooves at different positions cooperate with the limiting rod 17 to further stabilize the position of the cathode rod 11 after the height of the cathode rod 11 is adjusted, preventing the cathode rod 11 from being deviated due to the impact of the medium flowing in the storage tank and other factors.

[0036] Cathodic protection mechanism: the insulating layer 21 is installed on the inner side wall of the storage tank body 1 at the middle outer side position, and the cathode rod 11 and the anode rod 12 constitute a cathodic protection system inside the insulating layer 21. The medium stored in the storage tank usually has a certain conductivity and can be used as an electrolyte solution. The anode rod 12 is made of a more active metal material than the metal of the storage tank body 1, such as a magnesium rod or a zinc rod. In the electrolyte solution, the anode rod 12 will undergo oxidation reaction and release electrons, which are conducted to the cathode rod 11 through the medium. Since the storage tank body 1 is connected with the cathode rod 11, the storage tank body 1 becomes a cathode and is protected by obtaining electrons, avoiding corrosion. A plurality of arrayed through holes 13 are arranged on the outer side wall of the anode rod 12, which increases the contact area of the anode rod 12 with the electrolyte solution, so that the anode rod 12 can more fully undergo oxidation reaction, improving the cathodic protection effect.

[0037] Other auxiliary functions: the sealing groove cover plate 3 installed on the top of the tank cover 2 is used for sealing the sealing groove of the inner side wall of the tank cover 2, preventing dust, impurities and the like from entering, protecting the transmission components such as the internal threaded sleeve 8 and the bevel gear in the groove, and prolonging the service life thereof. The feed inlet 20 installed on the top of the middle position of the side wall of the storage tank body 1 is used for injecting the storage medium into the storage tank; the discharge port 18 installed at the bottom middle position is used for discharging the medium in the storage tank, meeting the normal storage use requirements of the storage tank.

[0038] The various devices selected in the application are all general standard parts or components known to those skilled in the art, and their structures and principles can be known by those skilled in the art through technical manuals or through conventional experimental methods.

[0039] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] In the description of the present application, it should be pointed out that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0041] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A negative electrode tooling for a storage tank, comprising a storage tank body (1), wherein a tank cover (2) is mounted on the top of the storage tank body (1), characterized in that: A sealing groove is provided in the middle of the inner side wall of the can lid (2). An internal threaded sleeve (8) is rotatably connected through the middle of the bottom of the inner side wall of the sealing groove. A bevel gear (7) is installed in the middle of the top of the internal threaded sleeve (8). A drive bevel gear (6) is meshed on one side wall of the bevel gear (7). A transmission rod (4) is connected to the input end of the drive bevel gear (6). The other end of the transmission rod (4) is rotatably connected through the outer side wall of the can lid (2). An adjustment handle (5) is connected to the input end of the transmission rod (4). A lifting threaded rod (9) is threadedly connected to the middle position of the inner sidewall of the internal threaded sleeve (8). A connecting plate (10) is installed at the middle position of the bottom of the lifting threaded rod (9). A cathode rod (11) is installed at the middle position of the bottom of the connecting plate (10). An insulating layer (21) is installed at the outer middle position of the inner sidewall of the storage tank body (1). The cathode rod (11) is lifted and connected to the inner sidewall of the insulating layer (21). An anode rod (12) is fixedly installed at the bottom middle position of the inner sidewall of the insulating layer (21) and below the cathode rod (11).

2. The negative electrode tooling for a storage tank according to claim 1, characterized in that: The connecting plate (10) has several fixed grooves arranged in an array in the middle of one side wall, and a limit rod (17) is connected through the inner side wall of any fixed groove.

3. The negative electrode tooling for a storage tank according to claim 2, characterized in that: Fixing blocks (14) are installed at the upper middle part of the inner sidewall of the insulating layer (21) and at both sides of the limiting rod (17). Limiting grooves (15) are respectively opened on the two side walls of the fixing blocks (14). A limiting block (16) is slidably connected at the middle position of the inner sidewall of the limiting groove (15). The two side walls of the limiting block (16) are respectively connected to the two ends of the limiting rod (17).

4. The negative electrode tooling for a storage tank according to claim 1, characterized in that: A sealing groove cover plate (3) is installed at the top center of the sealing groove.

5. The negative electrode tooling for a storage tank according to claim 1, characterized in that: The storage tank body (1) has a feed inlet (20) installed at the top of the middle position of one side wall.

6. The negative electrode tooling for a storage tank according to claim 1, characterized in that: The storage tank body (1) is equipped with a discharge port (18) at the bottom center.

7. The negative electrode tooling for a storage tank according to claim 1, characterized in that: The outer wall of the anode rod (12) is provided with a number of through holes (13) arranged in an array.

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