Waste heat recycling device for automatic galvanized wire

Abstract

The waste heat recycling device for the automatic galvanizing line comprises a galvanizing bath and a heating wire, the heating wire is arranged at the bottom of the galvanizing bath, the heating wire is used for heating zinc liquid in the galvanizing bath, a cavity is formed in the inner wall of the galvanizing bath, a water tank is arranged on the side edge of the galvanizing bath, and the water tank is arranged in the cavity. A water inlet is formed in the top of the water tank, a water inlet pipe and a water outlet pipe are arranged between the water tank and the galvanizing bath, one ends of the water inlet pipe and the water outlet pipe are communicated with the cavity, and the other ends are communicated with the water tank; a cavity is formed in the galvanizing bath, a water tank is arranged on the side edge of the galvanizing bath, a water pump is arranged in the water tank, the input end of the water pump is connected with a water outlet pipe, valves are arranged in the water inlet pipe and the water outlet pipe, and a connecting pipe is arranged on the side wall of the water tank. And through the design of the cavity and the water circulation loop, waste heat in the galvanizing bath is effectively recycled and used for preheating galvanizing water, and energy consumption is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to galvanization waste heat recovery technical field especially relates to a kind of waste heat recovery and utilization device for automatic galvanizing line. BACKGROUND

[0002] Hot galvanizing tank is the place that workpiece completes hot galvanizing, currently, the hot galvanizing tank appearing on market is mainly made of groove body of steel plate, hot galvanizing operation is carried out by heating plate to zinc liquid to the temperature required, zinc liquid in galvanizing tank is kept at about 450 DEG C, and the galvanizing of workpiece can be completed;

[0003] The existing Chinese patent document CN201610972143.8 discloses an automatic liquid supplementing hot galvanizing tank, the top end of the hot galvanizing tank body is provided with a zinc ingot pre-melting tank, the zinc ingot pre-melting tank is provided with a liquid supplementing pipeline extending to the hot galvanizing tank body, the liquid supplementing pipeline is provided with an electromagnetic valve, and the electromagnetic valve is provided with a fast closing flapper; the hot galvanizing tank body is provided with a corrosion-resistant floating capsule floating on the surface of the zinc liquid, the top end of the floating capsule is provided with a vertically extending floating rod, the hot galvanizing tank body is provided with a limiting cylinder limiting the floating rod, the limiting cylinder is sleeved outside the limiting floating rod, and the limiting floating rod is fixedly provided with a horizontally extending flapper opening control rod and a flapper closing control rod, the flapper opening control rod and the flapper closing control rod are arranged in an up-down manner, and the flapper of the fast closing flapper is arranged between the flapper opening control rod and the flapper closing control rod. The beneficial effects of the present application are that the zinc liquid level in the hot galvanizing tank body can be automatically controlled and maintained within a certain range.

[0004] However, the above-mentioned patent has certain defects in use, because the zinc liquid in the hot galvanizing tank can easily corrode the steel plate of the galvanizing tank, and the temperature of the zinc liquid decreases quickly, which affects the effect of hot galvanizing, so it is necessary to keep the temperature in the galvanizing tank high all the time, and the galvanizing line must be kept running for 24 hours once it is started, but the workpiece cannot be galvanized all the time, so the heat in the galvanizing tank can only be dissipated and cannot be utilized, thereby wasting resources.

[0005] Therefore, the present application provides a waste heat recovery and utilization device for automatic galvanizing line to solve the above-mentioned problems. Utility model content

[0006] In order to overcome the shortcomings of the prior art, the utility model provides a waste heat recovery and utilization device for automatic galvanizing line.

[0007] The utility model adopts the following technical scheme:

[0008] The utility model relates to an automatic galvanization line waste heat recycling device, including zinc tank and heating wire, the heating wire sets up at the bottom of zinc tank, the heating wire is used for the heating of zinc liquid drop galvanizing tank, the inner wall of zinc tank is equipped with cavity, the side of zinc tank is equipped with water tank, the top of water tank is equipped with water inlet, the water inlet pipe and the water outlet pipe between water tank and zinc tank are equipped with water inlet pipe and water outlet pipe, one end of water inlet pipe and water outlet pipe is linked with cavity, one end is linked with water tank,

[0009] The water tank is internally provided with a water pump, the input end of the water pump is connected with the water outlet pipe, valves are arranged in the water inlet pipe and the water outlet pipe, and a connecting pipe is arranged on the side wall of the water tank.

[0010] The top of the zinc tank is provided with a top cover, the top cover covers the upper surface of the zinc tank, the top cover comprises a plurality of heat preservation plates, and connecting belts are arranged between the heat preservation plates.

[0011] A support is arranged on the side wall of the zinc tank, an air suction pump is arranged on the support, an air suction opening is arranged on the side wall of the zinc tank, the air suction opening is connected with the cavity, the input end of the air suction pump is connected with the air suction opening, and a valve is arranged on the air suction opening.

[0012] A liquid level sensor is arranged in the cavity and close to the air suction opening, and a temperature sensor is arranged at the bottom of the cavity.

[0013] A controller is arranged on the front of the zinc tank, and the liquid level sensor, the temperature sensor, the air suction pump and the water pump are electrically connected with the controller.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. By arranging the cavity in the zinc tank and arranging the water tank on the side of the zinc tank, the water in the water tank can be circulated in the cavity through the water pump, the water is heated by the temperature of the zinc tank, the design of the cavity and the water circulation loop effectively recovers the waste heat in the zinc tank, and the waste heat is used for preheating the water for galvanizing, thereby reducing energy consumption.

[0016] 2. By arranging the top cover on the top of the zinc tank, the top cover is made of heat preservation material and is designed to be rollable, the heat loss in the zinc tank is reduced, and the waste heat recovery efficiency is improved. DRAWINGS

[0017] Fig. 1 It is the whole structure schematic diagram of the utility model;

[0018] Fig. 2 It is the whole structure explosion schematic diagram of the utility model;

[0019] Fig. 3 is the profile structure schematic diagram of the galvanizing tank of the utility model;

[0020] Fig. 4 is the top cover structure schematic diagram of the utility model;

[0021] In the figure: 1, galvanizing tank; 11, cavity; 12, air extraction port; 2, top cover; 21, connecting belt; 3, air extraction pump; 31, support; 4, water tank; 41, water inlet; 42, connecting pipe; 43, water inlet pipe; 44, water outlet pipe; 5, heating wire. DETAILED DESCRIPTION

[0022] In the following, the utility model is further described in combination with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.

[0023] The utility model is further described below in combination with the drawings,

[0024] As Figs. 1 to 4 shown, a kind of waste heat recycling device for automatic galvanizing line, including galvanizing tank 1 and heating wire 5, the heating wire 5 is arranged at the bottom of galvanizing tank 1, the heating wire 5 is used to drop the heating of zinc liquid in galvanizing tank 1, the inner wall of galvanizing tank 1 is equipped with cavity 11, cavity 11 is used to collect the waste heat generated in the process of zinc liquid heating, the side of galvanizing tank 1 is equipped with water tank 4, the top of water tank 4 is equipped with water inlet 41, water inlet 41 is used to add cold water in water tank 4, water inlet pipe 43 and water outlet pipe 44 are equipped between water tank 4 and galvanizing tank 1, one end of water inlet pipe 43 and water outlet pipe 44 is connected with cavity 11, one end is connected with water tank 4, and the structure forms water circulation loop;

[0025] The water pump is connected with water outlet pipe 44 at input end, and the water pump is used as power source to drive water circulation, valve is equipped in water inlet pipe 43 and water outlet pipe 44, for controlling the on-off of water flow, connecting pipe 42 is equipped on the lateral wall of water tank 4, and connecting pipe 42 can be used to connect external water equipment, and preheated water is output for use.

[0026] The top of galvanizing tank 1 is equipped with top cover 2, the top cover 2 covers the upper surface of entire galvanizing tank 1, for reducing heat loss in galvanizing tank 1, the top cover 2 includes a plurality of heat insulation plates, connecting belt 21 is equipped between the heat insulation plates, the connecting belt 21 is made of flexible heat insulation material, and the design can make that top cover 2 can be rolled up, in the process of galvanizing, top cover 2 can be rolled up on one side, and galvanizing operation is not hindered, and when not galvanizing, top cover 2 is laid flat and covers galvanizing tank 1 completely, reduces heat loss, effectively improves waste heat recovery efficiency, and reduces energy consumption.

[0027] The side wall of the galvanizing tank 1 is provided with a support 31, the support 31 is provided with an air extraction pump 3, the side wall of the galvanizing tank 1 is provided with an air extraction port 12, the air extraction port 12 is communicated with the cavity 11, the input end of the air extraction pump 3 is connected with the air extraction port 12, and the air extraction port 12 is provided with a valve. The air extraction pump 3 is used for extracting air in the cavity 11, and the cavity 11 is extracted into a vacuum state in the daily use process, so that the heat preservation effect of the galvanizing tank 1 is improved.

[0028] The liquid level sensor is used for monitoring the change of the water level in the cavity 11, so that the influence of the water level on the waste heat recovery effect is prevented, and the temperature sensor is used for monitoring the temperature of the water in the cavity 11, so that the heating power of the heating wire 5 can be adjusted in time, and the zinc liquid can be kept in a suitable temperature range.

[0029] The front surface of the galvanizing tank 1 is provided with a controller, the liquid level sensor, the temperature sensor, the air extraction pump 3 and the water pump are electrically connected with the controller, the controller controls the opening and closing of the air extraction pump 3 and the water pump and the heating power of the heating wire 5 according to the feedback signals of the liquid level sensor and the temperature sensor, and automatic control is realized.

[0030] The use principle of the utility model is: when using, galvanizing operation is carried out in the galvanizing tank 1, the zinc liquid needs to keep a certain temperature to ensure the galvanizing quality, the heating wire 5 is arranged at the bottom of the galvanizing tank 1, heat is transferred to the zinc liquid through current heating, so that the temperature required for galvanizing is reached.

[0031] After galvanizing, the cavity 11 in the inner wall of the galvanizing tank 1 can collect the waste heat generated in the zinc liquid heating process, the cavity 11 and the zinc liquid part of the galvanizing tank 1 exchange heat through heat conduction, so as to collect waste heat, at this time, cold water enters the cavity 11 from the water inlet pipe 43 of the water tank 4, the temperature of the cold water is increased after absorbing the waste heat, and the cold water becomes hot water, then the hot water returns to the water tank 4 through the water outlet pipe 44, waste heat recovery is realized, and the process is driven by the water pump, and a water circulation loop is formed.

[0032] The above embodiment is only the preferred embodiment of the utility model, and cannot be used to limit the range of the utility model protection, and any non-substantial change and replacement made by the person skilled in the art on the basis of the utility model belongs to the range of the utility model protection.

Claims

1. A waste heat recovery device for an automated galvanizing line, comprising a galvanizing tank (1) and a heating wire (5), wherein the heating wire (5) is disposed at the bottom of the galvanizing tank (1), and the heating wire (5) is used for heating the molten zinc in the galvanizing tank (1), characterized in that: The galvanizing tank (1) has a cavity (11) inside its inner wall. A water tank (4) is provided on the side of the galvanizing tank (1). A water inlet (41) is provided on the top of the water tank (4). A water inlet pipe (43) and a water outlet pipe (44) are provided between the water tank (4) and the galvanizing tank (1). One end of the water inlet pipe (43) and the water outlet pipe (44) are connected to the cavity (11), and the other end is connected to the water tank (4). The water tank (4) is equipped with a water pump. The input end of the water pump is connected to the outlet pipe (44). Both the inlet pipe (43) and the outlet pipe (44) are equipped with valves. The side wall of the water tank (4) is equipped with a connecting pipe (42).

2. The waste heat recovery and utilization device for an automated galvanizing line according to claim 1, characterized in that: The top of the galvanizing tank (1) is provided with a top cover (2), which covers the entire upper surface of the galvanizing tank (1). The top cover (2) is composed of multiple insulation boards, and a connecting strip (21) is provided between the insulation boards. The connecting strip (21) is made of flexible insulation material.

3. The waste heat recovery and utilization device for an automated galvanizing line according to claim 1, characterized in that: The side wall of the galvanizing tank (1) is provided with a bracket (31), the bracket (31) is provided with an air pump (3), the side wall of the galvanizing tank (1) is provided with an air extraction port (12), the air extraction port (12) is connected to the cavity (11), the input end of the air pump (3) is connected to the air extraction port (12), and the air extraction port (12) is provided with a valve.

4. The waste heat recovery and utilization device for an automated galvanizing line according to claim 3, characterized in that: A liquid level sensor is provided inside the cavity (11) near the air extraction port (12), and a temperature sensor is provided at the bottom of the cavity (11).

5. The waste heat recovery and utilization device for an automated galvanizing line according to claim 4, characterized in that: The galvanizing tank (1) is equipped with a controller on its front side, and the liquid level sensor, temperature sensor, air pump (3) and water pump are electrically connected to the controller.

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