Gas internal heating system of universal hot-dip galvanizing device for blow plating and hanging plating

Abstract

The utility model relates to the technical field of galvanizing furnaces, and provides a gas internal heating system of a universal hot-dip galvanizing device for blow plating and hanging plating, which comprises a galvanizing furnace and a plurality of partition raised lines, the partition raised lines are arranged on the galvanizing furnace at intervals, and a groove is formed between every two adjacent partition raised lines; the heating pipes are detachably arranged in the grooves, and each heating pipe is provided with an air inlet and an air outlet; the air inlet pipeline is arranged on the outer side of the galvanizing furnace, the heating pipes communicate with the air inlet pipeline through the air inlets, and the air inlet pipeline is used for conveying hot air into the heating pipes; the exhaust pipeline is arranged on the outer side of the galvanizing furnace, the heating pipes communicate with the exhaust pipeline through the exhaust ports, and the exhaust pipeline is used for exhausting hot air obtained after heat exchange in the heating pipes. By means of the technical scheme, the problems that in the prior art, a galvanizing furnace is prone to being corroded, and the electric heating speed is low are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to galvanizing furnace technical field, specifically, relate to a blow, the general hot dip galvanizing device gas internal heating system of hanging plating. BACKGROUND

[0002] At present, steel structure galvanizing furnace generally faces the problem of not resisting corrosion. In the long-term hot dip galvanizing aluminum magnesium alloy operation process, the tank body material is gradually corroded by the chemical corrosion of the plating solution and the influence of the high temperature environment, not only shortens the service life of the galvanizing furnace, increases the equipment replacement cost, but also may lead to plating solution pollution, affects product quality.

[0003] On the heating mode, electric heating is a common means, but the disadvantage is obvious. Electric heating is high in cost, consumes a large amount of electric energy, greatly increases the production cost of enterprises. Moreover, its heating speed is slow, which leads to the lengthening of production cycle and the difficulty in improving output, and cannot meet the increasing production demand of enterprises. At the same time, the existing electric power capacity of many enterprises is limited, which is difficult to bear the high energy consumption of electric heating equipment, and limits the further expansion of production capacity.

[0004] Therefore, a new blow, the general hot dip galvanizing device gas internal heating system of hanging plating is needed to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model provides a blow, the general hot dip galvanizing device gas internal heating system of hanging plating, solve the problem that the galvanizing furnace of related art is easy to be corroded and the slow electric heating speed.

[0006] The technical scheme of the utility model is as follows:

[0007] A blow, the general hot dip galvanizing device gas internal heating system of hanging plating, comprising a galvanizing furnace, further comprising:

[0008] The partition convex strip is provided with a plurality of partition convex strips, and the adjacent partition convex strips form a groove.

[0009] The heating pipe is provided with a plurality of heating pipes, and the heating pipe is detachably arranged in the groove.

[0010] The air inlet pipeline is arranged on the outside of the galvanizing furnace, and the plurality of heating pipes are communicated with the air inlet pipeline through the air inlet.

[0011] The air outlet pipeline is arranged on the outside of the galvanizing furnace, and the plurality of heating pipes are communicated with the air outlet pipeline through the air outlet.

[0012] Optionally, the partition protrusion bottom has a through groove, and the adjacent grooves are communicated through the through groove.

[0013] Optionally, the zinc plating furnace further comprises:

[0014] A baffle is arranged at the partition protrusion bottom, and the baffle is located at the side of the partition protrusion away from the inner wall of the zinc plating furnace, and the baffle is used for shielding the through groove.

[0015] Optionally, the zinc plating furnace further comprises:

[0016] A main air inlet pipe is in communication with the air inlet pipeline at one end and is communicated with a heating furnace at the other end, and the main air inlet pipe is used for conveying the hot air generated by the heating furnace into the air inlet pipeline.

[0017] Optionally, the heating pipe arranged in the pipe body inside the zinc plating furnace is arranged in a U shape or a V shape.

[0018] Optionally, the pipe opening section of the heating pipe is in a rectangular shape or a circular shape.

[0019] Optionally, the zinc plating furnace is made of refractory ceramic material.

[0020] Optionally, the heating pipe has a bending section, and the heating pipe is lapped on the furnace wall of the zinc plating furnace through the bending section.

[0021] Optionally, the shape of the groove is matched with the shape of the heating pipe.

[0022] The working principle and beneficial effects of the utility model are as follows:

[0023] In the utility model, the hot air generated by the external heat source is conveyed to the air inlet of the heating pipe through the air inlet pipeline. The hot air flows in the heating pipe, and heat is transferred to the plating solution in the zinc plating furnace, so that the plating solution is heated. The heat-exchanged hot air is discharged from the air outlet of the heating pipe, enters the air outlet pipeline, and is finally conveyed to other devices needing heat for waste heat utilization. The zinc plating furnace is heated by the combustion system, and the number of burners is reduced. The internal and external heating is ingeniously connected, and heat loss is reduced. The system can be successfully used in the two processes of hot-dip plating blowing and hot-dip plating hanging, and the limitation of original hanging plating is broken. The service life of the zinc plating furnace is prolonged by more than 5 times, the use safety is greatly improved, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above characteristics, technical features, advantages and implementation modes of the utility model will be further described in the following in a clear and understandable manner combined with the preferred embodiments and the attached drawings.

[0025] Figure 1 It is a whole structure schematic view of the zinc plating furnace and the heating pipe.

[0026] Figure 2 Structure diagram of the heating pipe, air inlet pipeline and air outlet pipeline of the present application;

[0027] Figure 3 Structure diagram of the heating pipe, air inlet pipeline and air outlet pipeline of the present application;

[0028] Figure 4 Structure diagram of the galvanizing furnace of the present application;

[0029] Figure 5 Structure diagram of the heating pipe of the present application;

[0030] Figure 6 Structure diagram of the through slot of the present application;

[0031] Figure 7 Top view of the galvanizing furnace of the present application.

[0032] In the figure: 1, galvanizing furnace; 2, partition convex strip; 201, recess; 3, heating pipe; 301, air inlet; 302, air outlet; 303, bending section; 4, air inlet pipeline; 5, air outlet pipeline; 6, main air inlet pipe; 7, through slot; 8, baffle. DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings and other embodiments according to these drawings without creative labor.

[0034] In order to make the drawing simple, only the parts related to the present application are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0035] In this article, it is necessary to explain that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" 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 connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] In addition, in the description of the present application, the terms "first", "second" and the like are only used for differentiation and description, and cannot be understood as indicating or implying relative importance.

[0037] Reference Figures 1-7 For an embodiment of the utility model, a gas internal heating system for a blow plating and hanging plating general hot-dip galvanizing device is provided, which comprises a galvanizing furnace 1, further comprises a partition protrusion 2, the partition protrusion 2 has a plurality of, a plurality of partition protrusions 2 are arranged on the galvanizing furnace 1 at intervals, and a groove 201 is formed between adjacent partition protrusions 2;A plurality of heating pipes 3 are provided, the heating pipes 3 are detachably arranged in the groove 201, and the heating pipes 3 have an air inlet 301 and an air outlet 302. The air inlet pipe 4 is arranged on the outside of the galvanizing furnace 1, the plurality of heating pipes 3 are communicated with the air inlet pipe 4 through the air inlet 301, and the air inlet pipe 4 is used to deliver hot air into the heating pipe 3;The air outlet pipe 5 is arranged on the outside of the galvanizing furnace 1, the plurality of heating pipes 3 are communicated with the air outlet pipe 5 through the air outlet 302, and the air outlet pipe 5 is used to discharge the hot air in the heating pipe 3 after heat exchange.

[0038] In the above scheme, the galvanizing furnace 1 adopts a large tank structure to meet the galvanizing demand of a large number of workpieces. The partition protrusion 2 is made of ceramic material which is resistant to high temperature and corrosion. Specifically, the galvanizing furnace 1 uses steel structure to support the outer frame, uses refractory ceramic material as the pot body, pours the ceramic galvanizing furnace, and the thickness of the tank is not less than 50 mm. The galvanizing furnace 1 is used as the main bearing structure, the partition protrusions 2 are arranged on the galvanizing furnace 1 at intervals to form grooves 201, and the heating pipes 3 are provided with mounting positions. It should be noted that the galvanizing furnace 1 and the partition protrusion 2 are an integral structure. The heating pipe 3 has an air inlet 301 and an air outlet 302, which are communicated with the air inlet pipe 4 and the air outlet pipe 5 respectively to form a hot air circulation channel.

[0039] Working process: the hot air generated by the external heat source is delivered to the air inlet 301 of the heating pipe 3 through the air inlet pipe 4. The hot air flows in the heating pipe 3, transfers heat to the plating solution in the galvanizing furnace 1, and realizes heating of the plating solution. The heat-exchanged hot air is discharged from the air outlet 302 of the heating pipe 3, enters the air outlet pipe 5, and is finally delivered to other equipment needing heat for waste heat utilization.

[0040] It should be noted that the material specification of the air inlet pipe 4 is: DN400-600mm fireproof insulation pipe, or DN400-600mm material 210S, 316L stainless steel pipe (with insulation), or DN400-600mm silicon nitride, silicon carbide or silicon nitride, silicon carbide combination or other high-temperature (450-1000 degrees Celsius) alloy material (with insulation). The main air inlet pipe 4 and the heating pipe 3 in the galvanizing furnace are connected together, the connection is welded or sub-mother buckle or connecting card, and the sealing is made with insulation material.

[0041] The temperature of the plating solution in the galvanizing furnace is controlled between 435-460 degrees. The combustion system in the high-temperature heating fireway is controlled by a temperature sensor. The size of the fire can be set according to the temperature of the plating solution to ensure the temperature required for hot-dip plating. The combustion system is used for heating, reducing the number of burners; ingeniously connecting the internal and external heating to reduce heat loss; this system can be successfully used for hot-dip plating of both blowing and hanging processes, breaking through the original limitation of only hanging plating. The service life of the galvanizing furnace is extended by more than 5 times, greatly improving the safety and reducing the cost.

[0042] Further, the bottom of the partition protrusion 2 has a through groove 7, and the adjacent grooves 201 are communicated through the through groove 7.

[0043] In the above scheme, the through groove 7 is provided along the length direction of the partition protrusion 2. In actual production, the through groove 7 can ensure the flow of the plating solution between the adjacent grooves 201, and will not affect the structural strength of the partition protrusion 2.

[0044] Working process: In the process of hot-dip galvanizing, the plating solution will flow in the galvanizing furnace 1. Due to the existence of the through groove 7 at the bottom of the partition protrusion 2, the plating solution can flow freely between the adjacent grooves 201, promoting the uniform distribution of the plating solution temperature and composition, improving the galvanizing quality, and during the galvanizing process, due to the large buoyancy of the zinc liquid after melting, the heating pipe 3 will move upward along the through groove 7 and be clamped in the through groove 7, improving the stability of the heating pipe 3 and the heating of the galvanizing furnace 1.

[0045] Further, it further includes a baffle 8, the baffle 8 is arranged at the bottom of the partition protrusion 2, and the baffle 8 is located on the side of the partition protrusion 2 away from the inner wall of the galvanizing furnace 1, and the baffle 8 is used to shield the through groove 7.

[0046] In the above scheme, the baffle 8 can limit the movement of the heating pipe 3, so that the heating pipe 3 can only move upward after being affected by the buoyancy.

[0047] Further, it further includes a main air inlet pipe 6, one end of the main air inlet pipe 6 is communicated with the air inlet pipe 4, and the other end is communicated with a heating furnace, and the main air inlet pipe 6 is used to deliver the hot air generated by the heating furnace into the air inlet pipe 4.

[0048] In the above scheme, the main air inlet pipe 6 is made of silicon carbide material pipe, one end is connected with the air inlet pipe 4 through flange, the other end is connected with a high-efficiency gas heating furnace. The power of the gas heating furnace is selected according to the size of the galvanizing furnace 1 and the production demand, for example, for the galvanizing furnace 1 of the above scale, a gas heating furnace with a power of 500kW is selected. The hot air generated by the heating furnace is introduced into the air inlet pipe 4 through the main air inlet pipe 6 to form a complete hot air supply system. It should be noted that the heating pipe 3 will move up due to the buoyancy, so the main air inlet pipe needs to have a section of corrugated pipe or hose structure to ensure that the heating pipe 3 can move.

[0049] The gas heating furnace burns gas to generate high-temperature hot air, which enters the air inlet pipe 4 through the main air inlet pipe 6, and then is distributed to each heating pipe 3 from the air inlet pipe 4 to provide heat source for heating the plating solution in the galvanizing furnace 1.

[0050] Further, the pipe body of the heating pipe 3 inside the galvanizing furnace 1 is arranged in U shape or V shape.

[0051] In the above scheme, the heating pipe 3 is arranged in U shape, V shape or W shape inside the galvanizing furnace 1, which increases the contact area of the heating pipe 3 with the plating solution and improves the heat exchange efficiency. After the hot air enters the heating pipe 3, it flows in the U-shaped, V-shaped or W-shaped pipe body and fully contacts with the plating solution to transfer heat to the plating solution, so as to heat the plating solution and meet the temperature requirement of hot dip galvanizing.

[0052] Further, the pipe opening section of the heating pipe 3 is rectangular or circular.

[0053] In the above scheme, the pipe opening section of the heating pipe 3 is rectangular or circular. Different cross-sectional shapes will affect the flow rate of hot air and heat exchange efficiency. The hot air enters the heating pipe 3 through the pipe opening with different cross-sectional shapes and exchanges heat with the plating solution during the flow in the pipe. The rectangular pipe opening can make the hot air more evenly distributed in the pipe, and the circular pipe opening is beneficial to reduce the flow resistance of hot air, which can all achieve effective heating of the plating solution.

[0054] Further, the galvanizing furnace 1 is made of refractory ceramic material.

[0055] In the above scheme, the galvanizing furnace 1 is made of refractory ceramic material, and the uniformity and density of the refractory ceramic material are ensured during pouring to improve the high-temperature resistance and corrosion resistance of the galvanizing furnace 1, which can effectively prolong the service life of the galvanizing furnace 1.

[0056] In the process of hot dip galvanizing, the galvanizing furnace 1 made of refractory ceramic material can withstand the erosion of high-temperature plating solution and long-time high-temperature environment, protect the internal structure of the galvanizing furnace 1 and ensure the stable operation of hot dip galvanizing.

[0057] Further, the heating pipe 3 has a bending section 303, and the heating pipe 3 is lapped on the wall of the galvanizing furnace 1 through the bending section 303.

[0058] In the above scheme, when installing, the bent section 303 is placed on the furnace wall of the galvanizing furnace 1, so that the heating pipe 3 is stably installed in the recess 201 and is convenient to connect with the air inlet pipe 4 and the air outlet pipe 5. Meanwhile, the position of the heating pipe 3 in the galvanizing furnace 1 can be adjusted.

[0059] When installing, the heating pipe 3 is overlapped on the furnace wall of the galvanizing furnace 1 through the bent section 303, so that the heating pipe 3 is stably installed in the recess 201. In the working process, the bent section 303 does not affect the flow of hot air in the heating pipe 3 and the heat exchange, and ensures the normal operation of the heating system.

[0060] Further, the shape of the recess 201 is matched with the shape of the heating pipe 3.

[0061] In the above scheme, when installing the heating pipe 3, because the recess 201 is matched with the shape of the heating pipe 3, the heating pipe 3 can be closely installed in the recess 201. In the hot-dip galvanizing process, the plating liquid cannot be leaked in large quantities between the recess 201 and the heating pipe 3, and the heating effect of the heating pipe 3 and the stability of the plating liquid are ensured.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalent, without departing from the spirit and scope of the technical solutions of the present application. All of them should be covered in the scope of the claims of the present application.

Claims

1. A gas internal heating system for a universal hot dip galvanizing device for blow plating and suspension plating, comprising a galvanizing furnace (1), characterized in that, Also include: The partition protrusions (2) are provided on the galvanizing furnace (1) at intervals, and grooves (201) are formed between adjacent partition protrusions (2); The heating pipes (3) are detachably arranged in the grooves (201), and the heating pipes (3) have air inlets (301) and air outlets (302); The air inlet pipe (4) is arranged outside the galvanizing furnace (1), and the air inlets (301) of the heating pipes (3) are communicated with the air inlet pipe (4), and the air inlet pipe (4) is used for conveying hot air into the heating pipes (3); The air outlet pipe (5) is arranged outside the galvanizing furnace (1), and the air outlets (302) of the heating pipes (3) are communicated with the air outlet pipe (5), and the air outlet pipe (5) is used for discharging the hot air in the heating pipes (3) after heat exchange.

2. The gas internal heating system for a general hot dip galvanizing apparatus for blow plating and suspension plating according to claim 1, characterized in that, The bottom of the partition protrusion (2) has a through groove (7), and adjacent grooves (201) are communicated through the through groove (7).

3. The gas internal heating system for a universal hot dip galvanizing apparatus for a dip coating and a hanging coating according to claim 2, wherein Also include: The baffle (8) is arranged at the bottom of the partition protrusion (2), and the baffle (8) is located on the side of the partition protrusion (2) away from the inner wall of the galvanizing furnace (1), and the baffle (8) is used for shielding the through groove (7).

4. The gas internal heating system for a general hot dip galvanizing apparatus for dip plating and suspension plating according to claim 1, characterized in that, Also include: The main air inlet pipe (6) is communicated with the air inlet pipe (4) at one end, and is communicated with a heating furnace at the other end, and the main air inlet pipe (6) is used for conveying the hot air generated by the heating furnace into the air inlet pipe (4).

5. The gas internal heating system for a general hot dip galvanizing apparatus for both dip and hanging galvanizing according to claim 1, wherein The pipe body of the heating pipe (3) arranged inside the galvanizing furnace (1) is in U shape, V shape or W shape.

6. The gas internal heating system for a general hot dip galvanizing apparatus for both dip and hanging galvanizing according to claim 1, wherein The pipe opening section of the heating pipe (3) is rectangular or circular.

7. The gas internal heating system for a universal hot dip galvanizing apparatus for both dip and hanging galvanizing according to claim 1, wherein The galvanizing furnace (1) is made of refractory ceramic material.

8. The gas internal heating system for a universal hot dip galvanizing apparatus for a dip coating and a hanging coating according to claim 1, wherein The heating pipe (3) has a bending section (303), and the heating pipe (3) is lapped on the furnace wall of the galvanizing furnace (1) through the bending section (303).

9. The gas internal heating system for a general hot dip galvanizing apparatus for a dip and hang galvanizing according to claim 1, wherein The shape of the groove (201) is matched with the shape of the heating pipe (3).

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