Portable polyethylene welding wire dryer

Abstract

The utility model provides a portable polyethylene welding wire dryer. The portable polyethylene welding wire dryer comprises a shell barrel, a middle air guide pipe, an inner copper pipe, a heating coil and an air blower. The middle gas guide pipe is inserted into the shell cylinder in a sleeved mode, the inner copper pipe is inserted into the middle gas guide pipe in a sleeved mode, the two axial ends of the inner copper pipe are open so that a polyethylene welding wire can be inserted into the inner copper pipe from the rear end opening of the inner copper pipe and then discharged from the front end opening of the inner copper pipe, the heating coil is placed in the middle gas guide pipe, and the heating coil is arranged on the inner copper pipe in a sleeved mode. The air blower is arranged in a sandwich cavity between the shell cylinder and the middle air guide pipe; the inner copper pipe is heated through the heating coil, the polyethylene welding wire passing through the inner copper pipe is rapidly heated, and the air blower blows hot air containing water out; the dryer is small in overall size and light in weight, the temperature is set to be 60-80 DEG C, and a worker can conveniently hang the dryer on a welding gun or directly fix the dryer on the welding gun; the device is small, portable and high in heating and dehumidifying efficiency, the welding quality is improved, and energy consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of non-metal welding auxiliary tools, in particular to a portable polyethylene welding wire dryer. Background Art

[0002] Due to the material characteristics of polyethylene, polyethylene welding wires have a certain water absorption. After being water-absorbed and dampened, the polyethylene welding wires will cause welding defects. To ensure the welding quality, a common method is to use a low-temperature oven, and through hot air circulation, dry at least for 12 hours under the condition of 60 - 80 °C. If it cannot be used for welding immediately, it needs to be placed in another low-temperature oven with a temperature controlled at 45 - 50 °C for storage, and taken as needed.

[0003] This pretreatment method of polyethylene welding wires using an oven has the following problems: First, the equipment has a large volume and emits heat to the surrounding environment, so it can only be set at a position far from the welding operation area, making it inconvenient to take and place polyethylene welding wires; second, drying and maintaining the dry state require the oven to be turned on for a long time, consuming energy, which is neither economical nor environmentally friendly; third, limited by the equipment, the number of polyethylene welding wires that can be processed at one time is limited, and often the drying rate cannot catch up with the consumption rate of polyethylene welding wires. Although it can be solved by increasing the number of ovens, it will lead to a significant increase in welding costs. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a portable polyethylene welding wire dryer with a small volume and high drying efficiency.

[0005] To solve the above technical problems, the technical solution provided by the utility model is as follows:

[0006] A portable polyethylene welding wire dryer includes a housing cylinder, an intermediate air duct, an inner copper tube, a heating coil, and a blower;

[0007] Through holes are opened on both the front end sealing plate and the rear end sealing plate of the housing cylinder in the axial direction, and an air intake through hole is provided at the rear part of the lateral wall of the housing cylinder;

[0008] The intermediate air duct is inserted and sleeved in the housing cylinder. The front end of the intermediate air duct extends out through the through hole on the front end sealing plate of the housing cylinder in the axial direction. The outer diameter surface of the front section of the intermediate air duct is fixedly connected to the inner diameter surface of the through hole on the front end sealing plate of the housing cylinder in the axial direction. The outer diameter surface of the rear end of the intermediate air duct is fixedly connected to the inner diameter surface of the through hole on the rear end sealing plate of the housing cylinder in the axial direction. The rear end pipe orifice of the intermediate air duct is sealed by a rear end sealing plate;

[0009] A plurality of through holes are provided on the pipe wall of the inner copper pipe. The inner copper pipe is inserted and sleeved in the middle air duct. The front end of the inner copper pipe extends out of the front open pipe orifice of the middle air duct and is exposed outside. The rear end of the inner copper pipe extends out of the through hole on the rear end sealing plate and is exposed outside. The outer diameter surface of the inner copper pipe is hermetically connected to the through hole on the rear end sealing plate. The axial two ends of the inner copper pipe are open for polyethylene welding wire to be inserted into the inner copper pipe from the rear open end of the inner copper pipe and then discharged from the front open end of the inner copper pipe. The sandwich cavity between the inner copper pipe and the middle air duct and the inner cavity of the inner copper pipe form the air outlet channel for the blower to exhaust air outwards. A gap is left between the front pipe orifice of the inner copper pipe and the front pipe orifice of the middle air duct to form the air outlet of the air outlet channel;

[0010] The heating coil is placed in the middle air duct. The heating coil is sleeved on the inner copper pipe, and the inner copper pipe passes through the heating coil;

[0011] The blower is arranged in the sandwich cavity between the outer shell cylinder and the middle air duct. The air inlet of the blower is communicated with the air inlet through hole on the outer shell cylinder, and the air outlet of the blower is hermetically communicated with the air inlet on the rear pipe wall of the middle air duct.

[0012] Preferably, the heating coil is a resistance wire coil. The positive and negative ends of the resistance wire coil are respectively electrically connected to the positive and negative electrodes of the battery through conducting wires. The battery is externally fixed on the outer surface of the outer shell cylinder, and the conducting wires pass through the pipe wall of the middle air duct and the cylinder wall of the outer shell cylinder.

[0013] Preferably, the front section of the middle air duct is a conical tubular shape.

[0014] Preferably, the air inlet through hole on the side wall of the outer shell cylinder is covered by a dust-proof net.

[0015] Preferably, the sandwich cavity between the outer shell cylinder and the middle air duct is filled with heat-insulating and heat-preserving cotton.

[0016] Preferably, the middle air duct is a ceramic pipe to reduce heat conduction and heat dissipation outwards.

[0017] The present application has achieved the following beneficial technical effects:

[0018] The portable polyethylene welding wire dryer provided by the present utility model heats the inner copper tube through a heating coil, and combines with the built-in blower to quickly heat the polyethylene welding wire passing through the inner copper tube, and the blower blows out the water-containing hot air; the overall volume of the dryer is small (not greater than 10 cm × 10 cm × 20 cm), and the weight is light (not greater than 500 g), and the temperature is set at 60-80 °C, which is convenient for welding construction personnel to carry around or directly fix on the welding torch; as a drying tool for polyethylene welding wire, the device is small, portable, has high heating and moisture removal efficiency, improves the welding quality, and reduces the energy consumption. Brief Description of the Drawings

[0019] Figure 1 FIG. is a schematic perspective view of a portable polyethylene welding wire dryer provided by an embodiment of the present application;

[0020] Figure 2 is Figure 1 right view of;

[0021] Figure 3 is Figure 1 top view of;

[0022] Figure 4 FIG. is a schematic semi-sectional view of the axial section of a portable polyethylene welding wire dryer provided by another embodiment of the present application;

[0023] In the figure: 1 outer shell cylinder, 2 intermediate air duct, 201 rear end sealing plate, 3 inner copper tube, 4 heating coil, 5 blower, 6 dust-proof net, 7 lifting lug. Detailed Description of the Embodiment

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "axial direction", "radial direction", "longitudinal direction", "lateral direction", "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "high", "low", "clockwise", "counterclockwise", "inner side", "outer side", "horizontal direction", "vertical direction", etc. is the orientation or positional relationship in the actual use process. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0026] Referring to Figures 1-4 , in the figure: outer shell cylinder 1, intermediate air duct 2, rear end sealing plate 201, inner copper tube 3, heating coil 4, blower 5, dust-proof net 6, lifting lug 7.

[0027] The present application provides a portable polyethylene welding wire dryer, including an outer shell cylinder 1, an intermediate air duct 2, an inner copper tube 3, a heating coil 4, and a blower 5;

[0028] Through holes are provided on both the axially front end sealing plate and the axially rear end sealing plate of the outer shell cylinder 1, and an air intake through hole is provided at the rear part of the lateral wall of the outer shell cylinder 1;

[0029] The intermediate air duct 2 is inserted and sleeved in the outer shell cylinder 1. The front end of the intermediate air duct 2 extends out through the through hole on the axially front end sealing plate of the outer shell cylinder 1. The outer diameter surface of the front section of the intermediate air duct 2 is fixedly connected (adhesive connection or welding connection) to the inner diameter surface of the through hole on the axially front end sealing plate of the outer shell cylinder 1. The outer diameter surface of the rear end of the intermediate air duct 2 is fixedly connected (adhesive connection or welding connection) to the inner diameter surface of the through hole on the axially rear end sealing plate of the outer shell cylinder 1. The rear end pipe orifice of the intermediate air duct 2 is sealed by the rear end sealing plate 201;

[0030] A plurality of through holes are provided on the tube wall of the inner copper tube 3. The inner copper tube 3 is inserted and sleeved in the intermediate air duct 2. The front end of the inner copper tube 3 extends out of the open front end of the intermediate air duct 2 and is exposed outside. The rear end of the inner copper tube 3 extends out of the through hole on the rear end sealing plate 201 and is exposed outside. The outer diameter surface of the inner copper tube 3 is hermetically connected (adhesive connection or welding connection) to the through hole on the rear end sealing plate 201. The two axial ends of the inner copper tube 3 are open for polyethylene welding wire to be inserted into the inner copper tube 3 from the rear open end of the inner copper tube 3 and then discharged from the front open end of the inner copper tube 3. The sandwich cavity between the inner copper tube and the intermediate air duct and the inner cavity of the inner copper tube form the air outlet channel for the blower to exhaust air outward. A gap is left between the front end opening of the inner copper tube and the front end opening of the intermediate air duct to form the air outlet of the air outlet channel;

[0031] The heating coil 4 is placed in the intermediate air duct 2. The heating coil 4 is sleeved on the inner copper tube 3, and the inner copper tube 3 passes through the heating coil 4;

[0032] The blower 5 is arranged in the sandwich cavity between the outer shell cylinder 1 and the intermediate air duct 2. The air inlet of the blower 5 is communicated with the air inlet through hole on the outer shell cylinder 1, and the air outlet of the blower 5 is hermetically communicated with the air inlet on the rear wall of the intermediate air duct 2.

[0033] In an embodiment of the present application, the heating coil 4 is a resistance wire coil. The positive and negative ends of the resistance wire coil are respectively electrically connected to the positive and negative electrodes of the battery through conductive wires. The battery is externally fixed on the outer surface of the outer shell cylinder 1, and the conductive wires pass through the tube wall of the intermediate air duct 2 and the tube wall of the outer shell cylinder 1 and then are electrically connected to the positive and negative electrodes of the battery.

[0034] In an embodiment of the present application, the front section of the intermediate air duct 2 is a conical tube.

[0035] In an embodiment of the present application, the air inlet through hole on the side wall of the outer shell cylinder 1 is covered by a dust-proof net 6.

[0036] In an embodiment of the present application, the sandwich cavity between the outer shell cylinder 1 and the intermediate air duct 2 is filled with heat-insulating and heat-preserving cotton.

[0037] In an embodiment of the present application, the intermediate air duct 2 is a ceramic tube to reduce heat conduction and heat dissipation outward.

[0038] The portable polyethylene welding wire dryer provided by the present utility model is realized by adopting the following technical solutions:

[0039] 1). The polyethylene welding wire passes through the inner copper tube 3, and the wire feeding starting point is one end of the inner copper tube 3 close to the dust-proof net 6; both ends of the inner copper tube 3 are rounded to prevent wire jamming;

[0040] 2). The inner copper tube 3 is heated by the heating coils 4 in the first, middle, and tail sections. Due to the good thermal conductivity of copper, the passing polyethylene welding wire is fully heated;

[0041] 3). The blower 5 is used to blow air into the sandwich channel between the inner copper tube 3 and the middle air guide tube 2, and the dust-proof net 6 is used to prevent dust at the air inlet through hole;

[0042] 4). The middle air guide tube 2 is tapered at the outlet, which increases the air velocity at the outlet, thereby improving the heat dissipation efficiency;

[0043] 5). The outer shell cylinder 1 is a covering part, which plays a role in heat insulation and protecting the internal circuits and components;

[0044] 6). Two lifting lugs 7 are provided on the outer shell cylinder 1 for hanging ropes or fixing to other devices.

[0045] The methods and devices not described in detail in this utility model are all prior arts and will not be elaborated here.

[0046] Specific embodiments are used in this article to elaborate on the principles and implementation manners of this utility model. The descriptions of the above embodiments are only used to help understand the method and its core idea of this utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of this utility model, several improvements and modifications can be made to this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A portable polyethylene welding wire dryer, characterized in that: It includes an outer shell tube, an intermediate air guide tube, an inner copper tube, a heating coil and a blower; Through holes are provided on the axial front end sealing plate and the axial rear end sealing plate of the outer shell tube, and an air intake through hole is provided at the rear of the lateral wall of the outer shell tube; The intermediate air guide tube is inserted and sleeved in the outer shell tube, the front end of the intermediate air guide tube extends out from the through hole on the axial front end sealing plate of the outer shell tube, the outer diameter surface of the front section of the intermediate air guide tube is fixedly connected to the inner diameter surface of the through hole on the axial front end sealing plate of the outer shell tube, the outer diameter surface of the rear end of the intermediate air guide tube is fixedly connected to the inner diameter surface of the through hole on the axial rear end sealing plate of the outer shell tube, and the rear end pipe opening of the intermediate air guide tube is sealed and blocked by the rear end sealing plate; A plurality of through holes are arranged on the tube wall of the inner copper tube, the inner copper tube is inserted and sleeved in the intermediate air duct, the front end of the inner copper tube extends out of the front end open tube mouth of the intermediate air duct and is exposed to the outside, the rear end of the inner copper tube extends out of the through hole on the rear end sealing plate and is exposed to the outside, the outer diameter surface of the inner copper tube is sealed and connected with the through hole on the rear end sealing plate, the axial ends of the inner copper tube are open for the polyethylene welding wire to be inserted into the inner copper tube from the rear end opening of the inner copper tube and then discharged from the front end opening of the inner copper tube, the sandwich cavity between the inner copper tube and the intermediate air duct and the tube cavity of the inner copper tube constitute an air outlet channel for the blower to exhaust air outwards, and a gap is left between the front end tube mouth of the inner copper tube and the front end tube mouth of the intermediate air duct to constitute the air outlet of the air outlet channel; The heating coil is placed in the middle air guide tube, the heating coil is sleeved on the inner copper tube, and the inner copper tube passes through the heating coil; The blower is arranged in a sandwich cavity between the outer shell tube and the intermediate air duct, the air inlet of the blower is connected to the air inlet through hole on the outer shell tube, and the air outlet of the blower is sealed and connected to the air inlet on the rear tube wall of the intermediate air duct.

2. A portable polyethylene welding wire dryer according to claim 1, characterized in that: The heating coil is a resistance wire coil, the positive and negative ends of the resistance wire coil are electrically connected to the positive and negative electrodes of the battery through conductive wires, the battery is externally fixed on the outer surface of the outer shell tube, and the conductive wire passes through the tube wall of the intermediate air duct and the tube wall of the outer shell tube.

3. A portable polyethylene welding wire dryer according to claim 1, characterized in that: The front section of the intermediate air guide tube is in a tapered tubular shape.

4. A portable polyethylene welding wire dryer according to claim 1, characterized in that: The air inlet through hole on the lateral wall of the outer shell cylinder is sealed by a dustproof net.

5. A portable polyethylene welding wire dryer according to claim 1, characterized in that: The sandwich cavity between the outer shell tube and the middle air guide tube is filled with heat insulation cotton.

6. A portable polyethylene welding wire dryer according to claim 1, characterized in that: The intermediate air guide pipe is a ceramic pipe to reduce heat conduction and heat dissipation to the outside.

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