Heating device of workpiece heating furnace

Abstract

The utility model belongs to the technical field of hot punching heating, and particularly relates to a heating device of a workpiece heating furnace. The fuel gas source is connected with the mixing pipeline and used for conveying fuel gas to the mixing pipeline; a first control valve for controlling the fuel gas inlet amount is arranged between the fuel gas source and the mixing pipeline; the pressure source is connected with the mixing pipeline and is used for spraying air into the mixing pipeline; the pressure source can control the pressure of the sprayed air; the nozzles are connected with the mixing pipeline, and the nozzles are used for being arranged in a workpiece heating furnace and spraying gas and air which are mixed in the mixing pipeline. Fuel gas and air are mixed in advance through the mixing pipeline structure, the fuel gas and the air are distributed into the different nozzles one by one to be heated, a user can well regulate and control the proportion of the fuel gas and the air through the first control valve, the fuel gas can be effectively saved on the premise that the requirement for normal work of the heating furnace is met, and cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot punching heating, in particular to a heating device for a workpiece heating furnace. Background Art

[0002] Chinese utility model 2016204946159 discloses a red-hot raw material heating device, which includes a chassis, in which a feeding mechanism, a heating furnace and a discharge port are sequentially arranged. A conveyor belt is provided in the furnace of the heating furnace, and a driving device is provided under the conveyor belt. One end of the conveyor belt is connected to the feeding mechanism, and the other end is connected to the discharge port. A heating device and a fire baffle are provided at the discharge port. The heating device includes a flamethrower.

[0003] The heating device in this patent has the following defects:

[0004] 1. The heating device in this patent is a flamethrower, which is generally connected to a gas cylinder and sprays gas by the pressure of the gas cylinder itself. Therefore, the amount of gas sprayed is difficult to control, resulting in a mismatch between the actual gas consumption and the gas output, resulting in gas waste.

[0005] 2. Each flamethrower needs to be equipped with a gas cylinder. If the heating area needs to be increased, multiple flamethrowers and multiple gas cylinders are required, and the overall structure is complicated. If multiple flamethrowers are connected through a single gas cylinder, the pressure of a single flamethrower is relatively low, which affects the normal operation of the flamethrower. Summary of the Invention

[0006] The purpose of the utility model is to provide a heating device for a workpiece heating furnace.

[0007] The purpose of this utility model is achieved in this way:

[0008] A heating device for a workpiece heating furnace, comprising:

[0009] Mixing pipeline;

[0010] A gas source is connected to the mixing pipeline and is used to deliver gas to the mixing pipeline; a first control valve for controlling the amount of gas fed is provided between the gas source and the mixing pipeline;

[0011] a pressure source connected to the mixing pipeline and used to spray air into the mixing pipeline; the pressure source can control the pressure of the sprayed air;

[0012] A plurality of nozzles are connected to the mixing pipeline, and the nozzles are used to be placed in the workpiece heating furnace and spray the gas and air mixed in the mixing pipeline.

[0013] Furthermore, a diverter head is provided on the top of the mixing pipeline, and a plurality of connecting pipes are connected to the diverter head, and each connecting pipe is respectively connected to a nozzle.

[0014] Furthermore, the nozzle includes a spray cavity formed therein, and an air outlet is provided on one end of the nozzle; the other end of the nozzle is connected to the mixing pipeline.

[0015] Furthermore, a partition is provided in the spray chamber, and a pressurizing hole is provided in the center of the partition.

[0016] Furthermore, a diverter plate is provided in the air outlet, a main nozzle is provided in the center of the diverter plate, and a plurality of auxiliary nozzles are distributed on the diverter plate at the outer edge of the main nozzle.

[0017] Furthermore, the first control valve includes a valve body, an air inlet cavity and an air outlet cavity are respectively provided on both sides of the valve body, and a valve core is slidably provided between the air inlet cavity and the air outlet cavity.

[0018] Furthermore, one end of the valve core is provided with a V-shaped opening opening outward.

[0019] Furthermore, a stepping motor for controlling the sliding movement of the valve core is fixed on the first control valve.

[0020] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0021] This patent uses the mixing pipeline structure to mix the gas and air in advance, and distributes them into different nozzles one by one to achieve heating. The user can well control the ratio of gas to air through the first control valve, which can effectively save gas and save costs while ensuring the normal operation of the heating furnace. Moreover, the overall structure of the mixing pipeline diversion structure in this patent is streamlined and easy to set up. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the red punch workpiece processing line.

[0023] Figure 2 It is a structural diagram of the heating device.

[0024] Figure 3 This is a disassembled schematic diagram of the first control valve.

[0025] Figure 4 It is a schematic cross-sectional diagram of the exploded view of the first control valve.

[0026] Figure 5 It is a truncated schematic diagram of the nozzle.

[0027] The meaning of the numbers in the figure:

[0028] 1. Mixing pipe; 11. Diverter; 12. Connecting pipe;

[0029] 2. First control valve; 21. Valve body; 22. Air inlet chamber; 23. Air outlet chamber; 24. Valve core; 25. V-shaped opening; 26. Stepper motor;

[0030] 3. Stressors;

[0031] 4. Nozzle; 41. Spray chamber; 42. Air outlet; 43. Partition; 431. Pressurization hole; 44. Diverter plate; 441. Main nozzle; 442. Auxiliary nozzle; 45. First connecting section; 46. Second connecting section; 47. Third connecting section;

[0032] 5. Workpiece heating furnace; 6. Loading mechanism; 61. Vibrating plate; 62. Conveying channel; 7. Unloading mechanism; 71. Robot; 72. Conveyor belt;

[0033] 8. Gas source; DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with specific embodiments:

[0035] A heating device for a workpiece heating furnace, comprising a mixing pipe 1, a gas source 8, a pressure source 3 and a plurality of nozzles 4. The heating device described in this patent is used in a red-punch workpiece processing line, in which a workpiece heating furnace 5 is provided. Figure 1 As shown, the workpiece heating furnace 5 is located in the middle of the assembly line, and a loading mechanism 6 and an unloading mechanism 7 are respectively provided on both sides of the workpiece heating furnace 5. The loading mechanism 6 is used to transport the workpiece into the workpiece heating furnace 5, and the unloading mechanism 7 is used to transport the workpiece from the workpiece heating furnace 5. Specifically, the loading mechanism 6 is a vibrating plate 61, and the vibrating plate 61 is connected to a conveying channel 62. The conveying channel 62 is connected to the workpiece heating furnace 5, and the workpiece can be gradually fed into the workpiece heating furnace through the vibrating plate 61; the unloading mechanism 7 is specifically a conveyor belt 72, and one end of the conveyor belt 72 has a robot 71 located on one side of the workpiece heating furnace 5. After the workpiece is heated, it is transported to the conveyor belt 72 by the robot 71, and then sent out by the conveyor belt 72.

[0036] The heating device is installed in the workpiece heating furnace 5, wherein the mixing pipeline 1 is located in the center of the workpiece heating furnace 5, the gas source 8 is connected to the first control valve 2 located below the workpiece heating furnace 5, and the nozzles 4 are distributed in the heating furnace.

[0037] In practice, the gas source 8 is an external gas pipeline connected to the first control valve 2, which in turn is connected to the mixing pipeline 1. The mixing pipeline 1 is arranged vertically, and the first control valve 2 is connected to the bottom of the mixing pipeline 1 via a pipeline. The pressure source 3 is specifically a fan, whose outlet is connected to the bottom of the mixing pipeline 1 via a pipeline. In this case, the first control valve 2 controls the air intake of the gas pipeline, and the air pressure is controlled by adjusting the fan power.

[0038] A diverter head 11 is provided at the top of the mixing pipeline 1. The diverter head 11 is cylindrical. The lower end of the diverter head 11 is connected to the upper end of the mixing pipeline 1. A plurality of through holes are distributed on the outer edge of the upper end of the diverter head 11. A connecting pipe 12 is provided in each through hole, which is connected to the nozzle 4 through the connecting pipe 12.

[0039] During operation, the first control valve 2 is opened and the pressure source 3 is working at the same time. At this time, the gas and the outside air are simultaneously transported to the mixing pipeline 1. The user can adjust the first control valve 2 and the fan power to obtain a suitable gas-air ratio, thereby obtaining the most suitable mixed gas for the operation of the heating furnace, so that the gas content in the mixed gas meets the combustion requirements and has sufficient pressure; the mixed gas will be driven by the pressure source 3 and sent into the nozzle 4 and then sprayed into the workpiece heating furnace 5. At this time, combustion can be achieved only in the workpiece heating furnace 5.

[0040] In summary, this patent mixes the gas and air in advance through the mixing pipeline 1 structure, and divides them into different nozzles 4 one by one to achieve heating. The user can well control the ratio of gas and air through the first control valve 2, which can effectively save gas and save costs while ensuring the normal operation of the workpiece heating furnace 5. Moreover, the overall structure of the diversion structure of the mixing pipeline 1 in this patent is streamlined and easy to set up.

[0041] Furthermore, the first control valve 2 includes a valve body 21, an air inlet cavity 22 and an air outlet cavity 23 are respectively provided on both sides of the valve body 21, and a valve core 24 is slidably provided between the air inlet cavity 22 and the air outlet cavity 23. Figure 3 、 4As shown, in fact, a stepper motor 26 is provided on one side of the valve body 21, and the valve core 24 is driven by the stepper motor 26. The valve body 21 is fixed to one side end face of the stepper motor 26 by fasteners, and the valve core 24 is placed in the valve body 21. The valve body 21 is respectively provided with through holes on the left and right sides to form the air inlet cavity 22 and the air outlet cavity 23. The air inlet cavity 22 is connected to the external gas pipeline, and the air outlet cavity 23 is connected to the mixing pipeline 1; the valve core 24 is located between the air inlet cavity 22 and the air outlet cavity 23, and the valve core 24 is driven to rise and fall by the stepper motor 26 to block the valve core 24 between the air inlet cavity 22 and the air outlet cavity 23, or to make the air inlet cavity 22 and the air outlet cavity 23 connected.

[0042] Further, if Figure 4 As shown, one end of the valve core 24 is provided with a V-shaped opening 25 that opens outward, and the two sides of the V-shaped opening 25 are respectively opposite to the air inlet cavity 22 and the air outlet cavity 23. During the opening process of the valve core 24, the gas will enter the air outlet cavity 23 from the air inlet cavity 22 through the V-shaped opening 25; at this time, the gas intake amount depends on the area of ​​the intersection of the end face of the air outlet cavity 23 and the V-shaped opening 25. The size of the V-shaped opening 25 can help to better control the gas intake amount.

[0043] Furthermore, a spray cavity 41 is formed in the nozzle 4, and an air outlet 42 is provided on one end of the nozzle 4; the other end of the nozzle 4 is connected to the mixing pipeline 1. Figure 2 、 5 As shown, the nozzle 4 in this patent consists of three parts, including a cylindrical first connecting section 45, one end of the first connecting section 45 is connected to the diverter head 11 through a connecting pipe 12, and the other end is connected to the second connecting section 46, and the other end of the second connecting section 46 is provided with a third connecting section 47. A partition 43 is fixed between the first connecting section 45 and the second connecting section 46, and a small boosting hole 431 is provided in the center of the partition 43. When the mixed gas passes through the small boosting hole 431, its pressure is increased by compressing the size of the mixed gas, thereby obtaining a better gas ejection effect.

[0044] A diverter plate 44 is provided between the second connecting section 46 and the third connecting section 47. A gas outlet 42 is provided at the other end of the third connecting section 47 for outwardly ejecting gas. The diverter plate 44 is designed to optimize the combustion effect of the gas after ejection. Specifically, a main nozzle 441 is provided at the center of the diverter plate 44, and a plurality of auxiliary nozzles 442 are distributed along the outer edges of the main nozzle 441. The main nozzle 441 is used to eject the main flame, while the auxiliary nozzles 442 also eject auxiliary flames. However, since the main nozzle 441 is larger than the auxiliary nozzles 442, the outer flame of the auxiliary flame is located at the core of the main flame. This causes the outer flame of the auxiliary flame to compensate for the temperature at the core of the flame, allowing the gas to burn better and more fully.

[0045] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

[0046] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the efficacy and purpose of the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of the present invention. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of the present invention without substantially changing the technical content.

[0047] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element through an intervening element.

[0048] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

Claims

1. A heating device for a workpiece heating furnace, characterized in that: include: Mixing line (1); A gas source is connected to the mixing pipeline (1) and is used to deliver gas to the mixing pipeline (1); a first control valve (2) for controlling the amount of gas fed is provided between the gas source and the mixing pipeline (1); A pressure source (3) is connected to the mixing pipeline (1) and is used to spray air into the mixing pipeline (1); the pressure source (3) can control the pressure of the sprayed air; A plurality of nozzles (4) are connected to the mixing pipeline (1); the nozzles (4) are placed in the workpiece heating furnace (5) and spray the gas and air mixed in the mixing pipeline (1).

2. The heating device of a workpiece heating furnace according to claim 1, characterized in that: A diverter head (11) is provided at the top of the mixing pipeline (1), and a plurality of connecting pipes (12) are connected to the diverter head (11), and each connecting pipe (12) is respectively connected to a nozzle (4).

3. The heating device of a workpiece heating furnace according to claim 1, characterized in that: The nozzle (4) includes a spray cavity (41) formed therein, and an air outlet (42) is provided on one end of the nozzle (4); the other end of the nozzle (4) is connected to the mixing pipeline (1).

4. The heating device of a workpiece heating furnace according to claim 3, characterized in that: A partition (43) is provided in the spray chamber (41), and a pressurizing hole (431) is provided at the center of the partition (43).

5. The heating device of a workpiece heating furnace according to claim 3, characterized in that: A diverter plate (44) is provided in the air outlet (42), a main nozzle (441) is provided at the center of the diverter plate (44), and a plurality of auxiliary nozzles (442) are distributed on the diverter plate (44) at the outer edge of the main nozzle (441).

6. The heating device of a workpiece heating furnace according to claim 1, characterized in that: The first control valve (2) comprises a valve body (21), an air inlet cavity (22) and an air outlet cavity (23) are respectively provided on both sides of the valve body (21), and a valve core (24) is slidably provided between the air inlet cavity (22) and the air outlet cavity (23).

7. The heating device of a workpiece heating furnace according to claim 6, characterized in that: One end of the valve core (24) is provided with a V-shaped opening (25) that opens outward.

8. The heating device of a workpiece heating furnace according to claim 6, characterized in that: A stepping motor (26) for controlling the sliding movement of the valve core (24) is also fixed on the first control valve (2).

Images