Tempering furnace foreground drying device

Abstract

The utility model discloses a tempering furnace foreground drying device which comprises an air blower, the air blower is connected with an air duct heater, and the air duct heater is connected with an air blowing device through an air blowing pipeline. The air blowing pipeline comprises a first air blowing pipe and a second air blowing pipe, and the first air blowing pipe and the second air blowing pipe are not located in the same plane. The tempering furnace is simple in structure and convenient to maintain, products entering the tempering furnace do not contain water any more, and a certain preheating effect on the products is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mesh belt furnace equipment, in particular to a front-stage drying device for a tempering furnace. Background Art

[0002] Mesh belt furnace generally refers to a sintering furnace in which the parts are continuously transported in the furnace by a mesh belt protected by a muffle. It is mainly used for the sintering of powder metallurgy products and the reduction of metal powders, as well as the pre-sintering, firing or heat treatment of electronic products in a protective atmosphere or air. The use of mesh belt furnace is relatively wide, and it is generally used for the sintering and brazing of powder metallurgy parts and the quenching and solution treatment of some stainless steel parts, such as the sintering of powder metallurgy parts; brazing of carbide tools and other assemblies; quenching of martensitic stainless steel hardware tools, medical equipment, and measuring tools; quenching of high chromium tool steel, high-speed tool steel, and matrix steel molds; and solution treatment of austenitic stainless steel and heat-resistant steel parts.

[0003] In the production process of mesh belt furnace, after quenching, the product needs to be cleaned by intermediate cleaning machine and then enter the tempering furnace for tempering treatment. Tempering treatment can eliminate or reduce stress, prevent deformation or cracking; stabilize the structure, shape and size, ensure accuracy; adjust mechanical properties such as strength, hardness, plasticity and toughness. Although the product has been purged by the intermediate cleaning machine, there is still some moisture on the product. The residual moisture on the product will reduce the quality of the product. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a drying device in front of a tempering furnace, so that the products entering the tempering furnace no longer contain moisture and have a certain preheating effect on the products.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a front-stage drying device of a tempering furnace, including a blower, the blower is connected to an air duct heater, and the air duct heater is connected to the blowing device through an air blowing pipe; the air blowing pipe includes a first air blowing pipe and a second air blowing pipe, and the first air blowing pipe and the second air blowing pipe are not in the same plane.

[0006] As a preferred technical solution of the utility model: the air duct heater includes a hollow body, the body includes an air inlet and an air outlet, a plurality of groups of heating wires are arranged in the body, and a temperature sensor is arranged on the air outlet.

[0007] As a preferred technical solution of the utility model: a heat-insulating plate is provided on the inner surface of the main body.

[0008] As a preferred technical solution of the utility model: the blowing device is a blowing hood, and the blowing hood is provided with a plurality of groups of blowing ports.

[0009] As a preferred technical solution of the utility model: fixing plates are arranged on both sides of the blowing hood.

[0010] The utility model has the following beneficial effects:

[0011] 1. Simple structure and easy maintenance, so that the products entering the tempering furnace no longer contain moisture, and have a certain preheating effect on the products.

[0012] 2. The blower and duct heater are installed on the top of the tempering furnace, which does not take up additional installation space in the workshop.

[0013] 3. The setting of the temperature sensor saves electricity while ensuring a stable drying effect.

[0014] 4. The setting of the blowing hood can carry out step-by-step drying of the product and provide better drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 for Figure 1 The main view;

[0017] Figure 3 for Figure 1 Right view of;

[0018] Figure 4 This is a schematic diagram of the installation structure of the utility model

[0019] Figure 5 for Figure 4 A partial enlarged view of point B in the middle;

[0020] Figure 6 It is the overall structural schematic diagram of the air duct heater;

[0021] Figure 7 for Figure 6 The main view;

[0022] Figure 8 for Figure 7 AA direction cross-sectional view;

[0023] Fig. 9 for Figure 6 A top view of

[0024] Fig.10 for Figure 6 Right view of;

[0025] Fig.11 It is a schematic diagram of the overall structure of the blowing device;

[0026] Fig.12for Fig.11 The main view;

[0027] Fig.13 for Fig.11 A top view of

[0028] Fig.14 for Fig.11 Right view of;

[0029] Fig.15 for Fig.11 Bottom view of

[0030] Fig.16 It is the overall structural diagram of the blower;

[0031] Figure 1-Figure 16 Among them, 1. blower; 2. air duct heater; 3. air blowing pipe; 4. air blowing device; 5. first air blowing pipe; 6. second air blowing pipe; 7. tempering furnace; 8. tempering furnace front desk; 9. main body; 10. air inlet; 11. air outlet; 12. heating wire; 13. junction box; 14. temperature sensor; 15. insulation board; 16. air blowing hood; 17. air inlet; 18. air blowing port; 19. fixing plate; 20. base. DETAILED DESCRIPTION

[0032] In order to make the purpose and advantages of the utility model more clear, the utility model is further described in detail in conjunction with the embodiments below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0033] like Figure 1-Figure 5 As shown, the embodiment of the utility model provides a drying device for the front desk of the tempering furnace, including a blower 1, the blower 1 is connected to the air duct heater 2, and the air duct heater 2 is connected to the blowing device 4 through the blowing pipe 3; the blowing pipe 3 includes a first blowing pipe 5 and a second blowing pipe 6, and the first blowing pipe 5 and the second blowing pipe 6 are not in the same plane. The first blowing pipe 5 and the second blowing pipe 6 are not in the same plane, so that the blower 1 can be set on the upper part of the tempering furnace 7 through the base 20, and the blowing device 4 is vertically set above the front desk 8 of the tempering furnace. Fig.16As shown, the base 20 of the blower 1 is convenient for fixing the blower 1 on the upper part of the tempering furnace 7, and at the same time, the blower 1 does not directly contact the tempering furnace 7 to prevent damage due to excessive temperature. The shape of the first blowing pipe 5 is determined according to the position of the blower 1 and the blowing device 4 on the tempering furnace, and is a broken line in this embodiment. Because the blower 1 is arranged on the upper part of the tempering furnace 7, the temperature of the air absorbed by the blower 1 is higher than the room temperature, so the temperature of the air entering the air duct heater 2 will also be higher than the room temperature, and its heating efficiency will be greatly improved, which also plays a role in saving electric energy. At the same time, the blower 1 and the air duct heater 2 are both installed on the top of the tempering furnace 7, and do not occupy additional installation space in the workshop. This embodiment has a simple structure and is easy to maintain, so that the products entering the tempering furnace 7 no longer contain moisture, and have a certain preheating effect on the products.

[0034] like Figure 6-Figure 10 As shown, the air duct heater 2 includes a hollow body 9, which includes an air inlet 10 and an air outlet 11. The air inlet 10 is connected to the blower 1, and the air outlet 11 is connected to the air duct 3. A junction box 13 is arranged above the body 9, and multiple groups of heating wires 12 are arranged in the body 9. The heating wires 12 are open ring-shaped, and their two input ends are arranged in the junction box 13. The multiple groups of heating wires 12 are evenly distributed in the body 9 in a rectangular array. In this embodiment, the number of heating wires 12 is preferably six groups. A temperature sensor 14 is arranged on the air outlet 11. The heating wire 12 and the temperature sensor 14 are electrically connected to the control device. The control device is a PLC or other equipment. The temperature sensor 14 can detect the temperature of the outlet air. The control device adjusts the heating power of the heating wire 12 according to the temperature sensed by the temperature sensor 14, which saves electric energy while ensuring a stable drying effect. In order to reduce heat loss, a heat preservation plate 15 is arranged on the inner surface of the body 9.

[0035] like Figure 11-Figure 15 As shown, the blowing device 4 is a blowing hood 16, and the blowing hood 16 can better cover the front desk 8 of the tempering furnace. The top of the blowing hood 16 is an air inlet 17, and the air inlet 17 is connected to the second blowing pipe 6. The blowing hood 16 is provided with multiple groups of blowing ports 18. In this embodiment, five blowing ports 18 are preferably used, which can perform step-by-step drying on the product and provide a better drying effect. In order to better set it on the front desk 8 of the tempering furnace, fixed plates 19 are provided on both sides of the blowing hood 16.

[0036] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A drying device for the front stage of a tempering furnace, characterized in that: The invention comprises a blower (1), wherein the blower (1) is connected to an air duct heater (2), and the air duct heater (2) is connected to an air blowing device (4) via an air blowing pipe (3); the air blowing pipe (3) comprises a first air blowing pipe (5) and a second air blowing pipe (6), and the first air blowing pipe (5) and the second air blowing pipe (6) are not in the same plane.

2. A tempering furnace front-stage drying device according to claim 1, characterized in that: The air duct heater (2) comprises a hollow body (9), wherein the body (9) comprises an air inlet (10) and an air outlet (11), a plurality of groups of heating wires (12) are arranged in the body (9), and a temperature sensor (14) is arranged on the air outlet (11).

3. A tempering furnace front-stage drying device according to claim 2, characterized in that: The inner surface of the body (9) is provided with a heat-insulating plate (15).

4. A tempering furnace front-stage drying device according to claim 1, characterized in that: The air blowing device (4) is an air blowing hood (16), and the air blowing hood (16) is provided with a plurality of groups of air blowing ports (18).

5. A tempering furnace front-stage drying device according to claim 4, characterized in that: Fixed plates (19) are provided on both sides of the blowing hood (16).

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