A galvanizing bath for processing a galvanized steel strip

Abstract

The utility model belongs to galvanizing groove technical field, and disclose a kind of galvanizing groove for galvanized strip steel processing, including galvanizing groove body, the bottom end of galvanizing groove body is integrally connected with sedimentation chamber, the bottom end and side surface of sedimentation chamber are respectively fixedly connected with collecting box and heating box, the solution inside the container of galvanizing groove body is divided into flow layer and zinc residue layer, by adopting sedimentation separation type structure, different caliber small sedimentation chamber is arranged in the inside of sedimentation tank, change to adopt single groove to different particle mixed settlement in the past, utilize zinc residue particle than galvanizing solution density big, galvanizing particle flows from through groove to the inside of sedimentation chamber, and pass through several groups of flow guide plate, the potential energy of zinc residue particle is improved, by above scheme, the inherent defect of traditional based on traditional sedimentation chamber only single-stage sedimentation tank exists coarse and fine particle mixed settlement, flow velocity temperature uniform distribution large particle leads to slow settlement and occupies invalid space, and the problem of large floor area.

Description

Technical Field

[0001] This utility model belongs to the field of galvanizing tank technology, specifically a galvanizing tank for processing galvanized steel strip. Background Technology

[0002] A galvanizing tank for galvanized steel strip processing is a piece of equipment used to galvanize steel strips. By immersing the steel strips in the molten zinc in the galvanizing tank, a zinc layer is formed on the surface of the steel strips, thereby improving the corrosion resistance and wear resistance of the steel strips.

[0003] Meanwhile, patent application number 201521077647.0 discloses a new type of hot-dip galvanizing tank, including a galvanizing tank, the galvanizing tank including an inner lining, a metal outer shell disposed on the outside of the inner lining and a heat insulation layer disposed on the outside of the metal outer shell, the side of the galvanizing tank is provided with a smoke exhaust port, the smoke exhaust port is connected to a cyclone dust collector via an induced draft fan.

[0004] However, in implementing the relevant technologies, it was found that the above-mentioned new hot-dip galvanizing tank has the inherent defects of traditional single-stage settling tanks, such as mixed settling of coarse and fine particles, uniform distribution of flow velocity and temperature, large particles causing slow settling, occupying ineffective space, and large footprint. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a galvanizing tank for processing galvanized strip steel. It overcomes the shortcomings of the previous method of having only one set of settling tanks, and instead enables several sets of settling tanks to be connected in series. Based on the gravity and temperature of the zinc slag particles, the mixed coarse and fine particles are separated, resulting in graded settling and a significant increase in efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a galvanizing tank for processing galvanized strip steel, comprising a galvanizing tank body, wherein a sedimentation chamber is integrally connected to the bottom end of the galvanizing tank body, and a collection box and a heating box are fixedly connected to the bottom end and the side of the sedimentation chamber, respectively; the solution inside the container of the galvanizing tank body is divided into a flow layer and a zinc dross layer.

[0007] The galvanizing tank body and the settling chamber are connected by two sets of through channels. The inner cavity of the settling chamber is rotatably connected to a baffle. Three sets of settling devices are connected between the settling chamber and the collection box. From right to left, the settling chamber consists of a primary coarse settling tank, a secondary intermediate settling tank, and a tertiary fine settling tank. The diameter of the primary coarse settling tank is larger than that of the secondary intermediate settling tank, and the diameter of the secondary intermediate settling tank is larger than that of the tertiary fine settling tank. The discharge ports of the three sets of settling devices are located inside the collection box. There are inclined plate settling units on both sides of the three sets of settling devices. The inclined plate settling unit on the side closer to the settling chamber is fixedly connected to the bottom of the galvanizing tank body and has a certain gap with the bottom of the settling chamber. The inclined plate settling unit on the side farther away from the settling chamber is the opposite.

[0008] Preferably, a motor is fixedly connected to one side of the collection box, the output end of the motor passes through the motor and a ground auger is fixedly connected to its surface, the ground auger rotates inside the collection box, and a discharge chute is provided on one side of the collection box.

[0009] Preferably, a second motor is fixedly connected to one side of the heating box. The output end of the second motor passes through the heating box and a lead screw is fixedly connected to its surface. A heating wire is sleeved on the outside of the lead screw. The heating wire slides inside the heating box and adheres to the inner wall of one side of the sedimentation chamber.

[0010] Preferably, a collection box is fixedly connected to the zinc slag layer area of ​​the galvanizing tank body. The collection box is provided with a feed chute with an opening to the left. A connecting pipe passes through the bottom end of the collection box. The connecting pipe passes through the inner wall of the galvanizing tank body and has a conical outer shell at its end. An annular slide is fixedly connected inside the conical outer shell.

[0011] Preferably, the discharge port of the conical shell is located in communication with the inlet of the annular slide, and a filter screen is fixedly connected inside the conical shell.

[0012] Preferably, the filter screen is located at the bottom of the annular slide discharge trough, and a transmission pipe runs through the conical shell and is located at the bottom of the filter screen. The transmission pipe is connected to the beginning of the liquid flow direction of the galvanizing tank body.

[0013] Preferably, a guide plate is provided at the bottom of the through-channel near the right side of the sedimentation chamber. Several sets of guide plates are provided, forming a meandering flow channel, while another set of through-channels is provided as a feed inlet.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model adopts a sedimentation separation structure, setting up small sedimentation chambers of different diameters inside the sedimentation tank. This changes the previous method of using a single tank for the sedimentation of mixed particles. By utilizing the zinc slag particles in the galvanizing tank body, which have a higher density than the galvanizing solution, the galvanized particles flow from the through tank to the inside of the sedimentation chamber. After passing through several sets of guide plates, the zinc slag particles are transported, increasing their potential energy and flowing into the interior of the sedimentation chamber. During the flow, due to the slow flow speed and heavy weight of the large zinc slag particles, they are discharged from the primary coarse sedimentation tank. As the zinc slag particles move further in, their flow velocity increases, and with the increase in temperature gradient, the fine particles are accelerated to agglomerate and settle into the secondary medium sedimentation tank and the tertiary fine sedimentation tank.

[0016] 2. This utility model observes the zinc dross distribution layer inside the galvanizing tank and uses liquid flow control to direct the zinc dross layer towards the inlet of the collection box. During the flow, the liquid enters the interior of the conical shell and passes through an annular slide to accelerate the filtration of zinc dross particles. The filtered zinc dross solution flows through a transmission pipe to the flow layer of the galvanizing tank for galvanizing steel and for collecting large zinc dross particles. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the transmission tube of this utility model;

[0019] Figure 3 This is a schematic diagram of the scum collection device of this utility model;

[0020] Figure 4 This is a structural schematic diagram of the front view of the galvanizing tank body of this utility model;

[0021] Figure 5 This is a structural schematic diagram of the flow of zinc plating liquid inside the zinc plating tank body of this utility model.

[0022] In the diagram: 1. The galvanizing tank body;

[0023] 2. Collection box; 21. Connecting pipe; 22. Conical outer shell; 23. Annular slide; 24. Filter screen; 25. Transmission pipe;

[0024] 3. Sedimentation chamber; 31. Primary coarse settling tank; 32. Secondary intermediate settling tank; 33. Tertiary fine settling tank; 34. Inclined plate settling unit; 35. Through-flow tank;

[0025] 4. Collection box; 41. Motor 1; 42. Ground heating element; 43. Heating box; 44. Motor 2; 45. Lead screw; 46. Heating wire;

[0026] 5. Deflector plate; 6. Baffle plate. Detailed Implementation

[0027] 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.

[0028] like Figures 1 to 5As shown, this utility model provides a galvanizing tank for processing galvanized strip steel, including a galvanizing tank body 1, a sedimentation chamber 3 integrally connected to the bottom end of the galvanizing tank body 1, a collection box 4 and a heating box 43 respectively fixedly connected to the bottom end and the side of the sedimentation chamber 3, and the solution inside the container of the galvanizing tank body 1 is divided into a flow layer and a zinc dross layer.

[0029] Two sets of through grooves 35 are connected to the galvanizing tank body 1 and the settling chamber 3. A baffle 6 is rotatably connected to the inner cavity of the settling chamber 3. Three sets of settling devices are connected between the settling chamber 3 and the collection box 4. From the right side to the left of the settling chamber 3, they are a primary coarse settling tank 31, a secondary intermediate settling tank 32, and a tertiary fine settling tank 33. The diameter of the primary coarse settling tank 31 is larger than that of the secondary intermediate settling tank 32, and the diameter of the secondary intermediate settling tank 32 is larger than that of the tertiary fine settling tank 33. The discharge ports of the three sets of settling devices are located inside the collection box 4. There are inclined plate settling units 34 on both sides of the three sets of settling devices. The inclined plate settling unit 34 on the side closer to the settling chamber 3 is fixedly connected to the bottom end of the galvanizing tank body 1 and has a certain gap with the bottom end of the settling chamber 3. The inclined plate settling unit 34 on the side farther away from the settling chamber 3 is the opposite.

[0030] Specifically, a motor 41 is fixedly connected to one side of the collection box 4. The output end of the motor 41 passes through the motor 41 and a ground duct 42 is fixedly connected to its surface. The ground duct 42 rotates inside the collection box 4 to collect zinc slag particles and discharges them from a discharge chute provided on one side of the collection box 4.

[0031] Furthermore, a second motor 44 is fixedly connected to one side of the heating box 43. The output end of the second motor 44 passes through the heating box 43 and a lead screw 45 is fixedly connected to its surface. A heating wire 46 is sleeved on the outside of the lead screw 45. The heating wire 46 slides inside the heating box 43. During the sliding process, the heating wire 46 heats the heating box 43 and transfers the heat to one side of the inner wall of the sedimentation chamber 3 through metal heat conduction, so as to achieve a temperature difference between different areas inside the sedimentation chamber 3.

[0032] Furthermore, a collection box 2 is fixedly connected to the zinc dross layer area of ​​the galvanizing tank body 1. Large zinc dross particles floating on the surface of the galvanizing liquid enter the connecting pipe 21 through the feed chute with an opening to the left of the collection box 2. The pipe 21 penetrates the inner wall of the galvanizing tank body 1 and the end of the pipe penetrates the conical shell 22. An annular slide 23 is fixedly connected inside the conical shell 22. After the zinc dross particles flow through the annular slide 23, their potential energy during movement is increased.

[0033] It is worth noting that the discharge port of the conical shell 22 is connected to the inlet of the annular slide 23, and a filter screen 24 is fixedly connected inside the conical shell 22 for separating zinc slag particles.

[0034] It is worth noting that the filter screen 24 is located at the bottom of the discharge trough of the annular slide 23, and the conical shell 22 has a transmission pipe 25 running through it and is located at the bottom of the filter screen 24. The zinc dross particles are blocked by the filter screen 24, while the particles that pass through the filter screen 24 flow to the beginning of the liquid flow direction of the galvanizing tank body 1 through the transmission pipe 25.

[0035] It is worth mentioning that a guide plate 5 is provided at the bottom of the through-channel 35 near the right side of the sedimentation chamber 3. The guide plate 5 is set in an inclined shape. The zinc slag particles flowing out of the through-channel 35 will increase the settling area as they flow through the guide plate 5. Several sets of liquid guide plates 5 are provided, and the several sets of guide plates 5 form a meandering flow channel to increase the sedimentation time. After separation, the zinc slag particles flow into the interior of the galvanizing tank body 1 from another set of through-channel 35.

[0036] Among them, motor 41 and motor 44 are existing technologies and will not be described in detail; at the same time, this utility model also includes a power supply, controller and switch, etc., which are not the main technical points of this patent and will not be described in detail; the "front, back, left and right" perspectives of this device are as follows: Figure 1 The direction shown in the diagram is the reference.

[0037] Working principle:

[0038] The workpiece to be galvanized is placed inside the galvanizing tank body 1, and galvanizing is carried out in the flow layer of the galvanizing tank body 1. When galvanizing is carried out for a long time, a layer of zinc dross will be attached to the surface of the flow layer. During the process of the flow layer surging inside the galvanizing tank body 1, it will push the zinc dross layer to flow into the feed trough area of ​​the collection box 2. During the flow, the liquid containing a large amount of zinc dross flows through the collection box 2 and the connecting pipe 21 into the conical shell 22. The liquid undergoes centrifugal motion through the annular slide 23 inside the conical shell 22, generating a large centrifugal force. The zinc dross discharged from the annular slide 23 flows into the filter screen 24. After being filtered by the filter screen 24, the zinc dross flows into the flow layer of the galvanizing tank body 1 through the transmission pipe 25 at the bottom of the filter screen 24, while larger impurities in the zinc dross are blocked by the filter screen 24.

[0039] For the relatively small zinc dross contained in the flow layer, under the action of gravity and thrust, it flows from the left side to the right side of the galvanizing tank body 1. During the flow, the small zinc dross flows from the through channel 35 into the interior of the settling chamber 3. When the baffle 6 is opened, the liquid has a certain potential energy as it flows from the galvanizing tank body 1 into the settling chamber 3. It then flows through the inclined plate settling unit 34 into the primary coarse settling tank 31. One side of the inclined plate settling unit 34 is used to block the small zinc dross, creating an up-and-down tumbling phenomenon inside the settling chamber 3. The primary coarse settling tank 31 is also the inlet, the initial settling and filtration point. The temperature at this point is lower than that of the other secondary intermediate settling tanks 32 and 3... The primary fine settling tank 33 has a low diameter, large flow rate, and settles coarse particles. In the subsequent tanks, the secondary intermediate settling tank 32 is larger than the tertiary fine settling tank 33, with decreasing volume and increasing flow rate. Combined with the temperature gradient, it accelerates the agglomeration and settling of fine particles. By controlling the temperature inside the settling chamber 3, the flow rate of zinc slag inside the settling chamber 3 is changed. At increasing temperature, the particle flow rate slows down. Motor 44 controls the heating wire 46 on the surface of the heating box 43 to move inside the heating box 43. The heating wire 46 is used to adjust the temperature of different areas inside the settling chamber 3. For example, the required temperatures of the primary coarse settling tank 31, the secondary intermediate settling tank 32, and the tertiary fine settling tank 33 are different, so it is necessary to control the stability of the heating wire 46 inside the settling chamber 3.

[0040] The zinc slag particles flowing out from the primary coarse settling tank 31, the secondary medium settling tank 32 and the tertiary fine settling tank 33 flow from the collection box 4. The motor 41 is started to drive the ground auger 42 to rotate, and during the rotation, the zinc slag particles flow towards the discharge port.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] 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 galvanizing tank for processing galvanized strip steel, comprising a galvanizing tank body (1), characterized in that: The bottom end of the galvanizing tank body (1) is integrally connected to a sedimentation chamber (3). The bottom end and the side of the sedimentation chamber (3) are respectively fixedly connected to a collection box (4) and a heating box (43). The solution inside the container of the galvanizing tank body (1) is divided into a flow layer and a zinc slag layer. The galvanizing tank body (1) and the sedimentation chamber (3) are connected by two sets of through grooves (35). The inner cavity of the sedimentation chamber (3) is rotatably connected to a baffle (6). Three sets of settling devices are connected between the sedimentation chamber (3) and the collection box (4). From right to left, the settling chamber (3) consists of a primary coarse settling tank (31), a secondary intermediate settling tank (32), and a tertiary fine settling tank (33). The diameter of the primary coarse settling tank (31) is larger than that of the secondary intermediate settling tank (32). The diameter of the intermediate settling tank (32) is larger than that of the three-stage fine settling tank (33). The discharge ports of the three sets of settling devices are located inside the collection box (4). There are inclined plate settling units (34) on both sides of the three sets of settling devices. The inclined plate settling unit (34) on the side closer to the sedimentation chamber (3) is fixedly connected to the bottom end of the galvanizing tank body (1) and has a certain gap with the bottom end of the sedimentation chamber (3). The inclined plate settling unit (34) on the side away from the sedimentation chamber (3) is the opposite.

2. The galvanizing tank for processing galvanized strip steel according to claim 1, characterized in that: A motor (41) is fixedly connected to one side of the collection box (4). The output end of the motor (41) passes through the motor (41) and a ground auger (42) is fixedly connected to its surface. The ground auger (42) rotates inside the collection box (4). A discharge chute is provided on one side of the collection box (4).

3. The galvanizing tank for processing galvanized strip steel according to claim 1, characterized in that: A second motor (44) is fixedly connected to one side of the heating box (43). The output end of the second motor (44) passes through the heating box (43) and a lead screw (45) is fixedly connected to its surface. A heating wire (46) is sleeved on the outside of the lead screw (45). The heating wire (46) slides inside the heating box (43) and adheres to the inner wall of one side of the sedimentation chamber (3).

4. The galvanizing tank for processing galvanized strip steel according to claim 1, characterized in that: A collection box (2) is fixedly connected to the zinc slag layer area of ​​the galvanizing tank body (1). The collection box (2) is provided with a feed chute with an opening to the left. A connecting pipe (21) passes through the bottom end of the collection box (2). The connecting pipe (21) passes through the inner wall of the galvanizing tank body (1) and has a conical shell (22) at its end. An annular slide (23) is fixedly connected inside the conical shell (22).

5. A galvanizing tank for processing galvanized strip steel according to claim 4, characterized in that: The discharge port of the conical shell (22) is connected to the inlet of the annular slide (23), and a filter screen (24) is fixedly connected inside the conical shell (22).

6. A galvanizing tank for processing galvanized strip steel according to claim 5, characterized in that: The filter screen (24) is located at the bottom of the discharge trough of the annular slide (23). The conical shell (22) has a transmission pipe (25) inside and is located at the bottom of the filter screen (24). The transmission pipe (25) is connected to the beginning of the liquid flow direction of the galvanizing tank body (1).

7. A galvanizing tank for processing galvanized strip steel according to claim 3, characterized in that: A guide plate (5) is provided at the bottom of the through channel (35) near the right side of the sedimentation chamber (3). Several sets of guide plates (5) are provided, and the several sets of guide plates (5) form a meandering flow channel, while another set of through channels (35) is provided as a feed inlet.

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