Tubular electric heater capable of being overhauled on line

Abstract

The utility model belongs to the field of dust removal, and particularly relates to a tubular electric heater capable of being overhauled on line, which comprises a heater seat, a rock wool box is clamped in the heater seat, and a rock wool filler is placed in an accommodating cavity of the rock wool box; the positioning nut and the heater base are attached to the equipment installation end face, during installation, the positioning nut is installed on the equipment end face, the tightening latch is screwed into the positioning nut, a vertical guide structure is formed, the rock wool box is assisted to be placed in an inner cavity of the heater base, and the electric heating mechanism can be fixedly installed through threaded connection of the limiting nut and the tightening latch. And the heater base and the rock wool box form a sealing mechanism with a reserved opening only facing the equipment mounting end face, the air heat insulation layer is clamped between the electric heating pipe and the rock wool box, heat absorption and heat preservation are conducted in cooperation with the rock wool box and rock wool filler in the rock wool box, heat leakage is prevented, and the equipment heating effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of dust removal, in particular to a tubular electric heater capable of online maintenance. Background Art

[0002] The electric heaters in dust removal equipment are mainly used to provide heat to meet the specific needs of the dust removal process. These electric heaters are usually high-efficiency, energy-saving, and environmentally friendly.

[0003] The prior art has the following problems:

[0004] 1. The existing tubular electric heater has a complicated installation structure due to its tubular specifications, and requires cumbersome disassembly and assembly steps when maintenance is required;

[0005] 2. When the existing electric heater is in use, a large amount of heat is dissipated into the air, and only a small part of the heat acts on the equipment, resulting in a poor heating effect. Utility Model Content

[0006] (I) Purpose of the utility model

[0007] In order to solve the technical problems existing in the background technology, the utility model proposes an online repairable tubular electric heater, which has the characteristics of simple structure, convenient repair and good heating effect.

[0008] (II) Technical solution

[0009] In order to solve the above technical problems, the utility model provides an online repairable tubular electric heater, comprising a heater seat, wherein a rock wool box is clamped inside the heater seat, and a rock wool filler is placed in the cavity of the rock wool box;

[0010] The electric heating mechanism includes an electric heating tube arranged on the upper part of the rock wool box, the electric heating tube is built-in and penetrates the rock wool box, the two ends of the electric heating tube are provided with wiring poles, and a sheath is provided on a section of the outer wall of the inner cavity of the rock wool box;

[0011] The positioning mechanism comprises a bolt sleeve arranged in the inner cavity of the rock wool box, a positioning nut is arranged below the bolt sleeve, a bolt rod passing through the bolt sleeve is threaded inside the positioning nut, and a detachable limiting nut is arranged on the upper part of the bolt rod.

[0012] Preferably, the bottom of the electric heating tube is a "U-shaped" structure, and an air insulation layer is sandwiched between the bottom of the electric heating tube and the rock wool box.

[0013] Preferably, a plurality of support plates are equidistantly arranged in the air insulation layer, the rock wool box is attached to the upper portion of the support plate, and the electric heating tube is attached to the lower portion of the support plate.

[0014] Preferably, the positioning nut and the bolt sleeve are coaxially located, and the positioning nut and the lower portion of the heater seat are both attached to the mounting end surface.

[0015] Preferably, the rock wool box and the bolt sleeve are an integrated structure, and both move up and down along the bolt rod.

[0016] Preferably, a raised handle seat is provided on the top of the rock wool box, and a through groove is provided in the handle seat.

[0017] The above technical solution of the utility model has the following beneficial technical effects:

[0018] 1. The positioning nut and the heater seat are attached to the installation end face of the equipment. During installation, the positioning nut is installed on the end face of the equipment, and the bolt rod is screwed into the positioning nut to form a vertical guide structure. The rock wool box and the bolt sleeve move downward along the bolt rod, and the rock wool box is placed in the inner cavity of the heater seat. The electric heating mechanism can be fixedly installed by screwing the limit nut and the bolt rod. When disassembling, loosen the limit nut and remove the bolt rod to pull up the rock wool box and the electric heating mechanism for inspection.

[0019] 2. The heater base and the rock wool box form a sealing mechanism with an opening reserved only toward the equipment installation end face. Because there is an air insulation layer between the electric heating tube and the rock wool box, when the heat dissipates upward, it is absorbed and insulated by the rock wool box and the rock wool filler inside it to prevent heat leakage, ensure that the heat can act mainly on the equipment, and improve the heating effect of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the heating mechanism structure of the utility model;

[0023] Figure 4 It is a schematic diagram of the positioning mechanism structure of the utility model.

[0024] Reference numerals:

[0025] 1. Heater seat; 2. Rock wool box; 3. Rock wool filler; 4. Junction box; 42. Electric heating tube; 43. Wiring pole; 44. Sheath; 51. Bolt sleeve; 52. Positioning nut; 53. Bolt rod; 54. Limit nut; 6. Support plate; 7. Handle seat. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0027] like Figure 1-4 As shown, the utility model provides an online repairable tubular electric heater, comprising a heater seat 1, a rock wool box 2 is clamped inside the heater seat 1, and a rock wool filler 3 is placed in the cavity of the rock wool box 2;

[0028] The electric heating mechanism includes 41 arranged on the upper part of the rock wool box 2, 41 has an electric heating tube 42 penetrating the rock wool box 2, both ends of the electric heating tube 42 are provided with wiring poles 43, and a sheath 44 is provided on a section of the outer wall of the inner cavity of the rock wool box 2;

[0029] The positioning mechanism includes a bolt sleeve 51 arranged in the inner cavity of the rock wool box 2, a positioning nut 52 is arranged below the bolt sleeve 51, a bolt rod 53 passing through the bolt sleeve 51 is threaded inside the positioning nut 52, and a detachable limit nut 54 is arranged on the upper part of the bolt rod 53.

[0030] In one embodiment, the positioning nut 52 and the lower part of the heater seat 1 are both attached to the equipment installation end face. When installing the electric heater, the positioning nut 52 is first installed on the equipment end face, and the bolt rod 53 is screwed into the positioning nut 52 to form a vertical guide structure. Since the rock wool box 2 and the bolt sleeve 51 are an integrated structure, the positioning nut 52 and the bolt sleeve 51 are on the same axis. The rock wool box 2 and the bolt sleeve 51 move downward along the bolt rod 53, and the rock wool box 2 is placed in the inner cavity of the heater seat 1 to achieve fixed installation of the electric heating mechanism. Reinforcement can be achieved by screwing the limit nut 54 and the bolt rod 53.

[0031] As a disassembly example, the limiting nut 54 is loosened to disassemble the bolt rod 53, and the rock wool box 2 and the electric heating mechanism can be pulled upward and removed from the inner cavity of the heater seat 1 for inspection.

[0032] In another embodiment, a sealing mechanism with an opening reserved only toward the installation end face of the equipment is formed by the heater seat 1 and the rock wool box 2. The heating section of the electric heating tube 42 of the electric heating mechanism is located in the reserved cavity of the heater seat 1 and the rock wool box 2, and the heat release surface is directly toward the equipment. Since the bottom of the electric heating tube 42 is a "U-shaped" structure, an air insulation layer is sandwiched between it and the rock wool box 2. When heat dissipates upward, it is absorbed and insulated by the rock wool box 2 and the rock wool filler 3 therein to prevent heat leakage, thereby ensuring that the heat can mainly act on the equipment and improve the heating effect of the equipment.

[0033] In order to support the rock wool box 2, a number of support plates 6 are equidistantly arranged in the air insulation layer. The upper part of the support plate 6 is attached to the rock wool box 2, and the lower part is attached to the electric heating tube 42. A notch is provided at the bottom of the support plate 6 for passing the electric heating tube 42. On the one hand, the rock wool box is supported, and on the other hand, the air insulation layer is divided into four cavities, and the temperature in the four cavities is balanced.

[0034] In order to facilitate the lifting of the rock wool box 2, a raised handle seat 7 is further provided on the top of the rock wool box 2, and a through groove for placing a hand is opened in the handle seat 7.

[0035] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A tubular electric heater capable of online maintenance, characterized in that: It comprises a heater seat (1), wherein a rock wool box (2) is clamped inside the heater seat (1), and a rock wool filler (3) is placed in the cavity of the rock wool box (2); The electric heating mechanism comprises a (41) arranged on the upper part of the rock wool box (2), wherein the (41) has an electric heating tube (42) penetrating the rock wool box (2), and both ends of the electric heating tube (42) are provided with wiring poles (43), and a sheath (44) is provided on a section of the outer wall of the inner cavity of the rock wool box (2); The positioning mechanism comprises a bolt sleeve (51) arranged in the inner cavity of the rock wool box (2), a positioning nut (52) is arranged below the bolt sleeve (51), a bolt rod (53) passing through the bolt sleeve (51) is threadedly connected inside the positioning nut (52), and a detachable limiting nut (54) is arranged on the upper part of the bolt rod (53).

2. The online repairable tubular electric heater according to claim 1, characterized in that: The bottom of the electric heating tube (42) is a "U-shaped" structure, and an air insulation layer is sandwiched between the electric heating tube (42) and the rock wool box (2).

3. The online repairable tubular electric heater according to claim 2, characterized in that: A plurality of support plates (6) are equidistantly arranged in the air insulation layer, the upper portion of the support plates (6) is attached to the rock wool box (2), and the lower portion of the support plates (6) is attached to the electric heating tube (42).

4. The online repairable tubular electric heater according to claim 1, characterized in that: The positioning nut (52) and the bolt sleeve (51) are coaxially located, and the positioning nut (52) and the lower part of the heater seat (1) are both attached to the mounting end surface.

5. The online repairable tubular electric heater according to claim 1, characterized in that: The rock wool box (2) and the bolt sleeve (51) are an integrated structure, and both move up and down along the bolt rod (53).

6. The online repairable tubular electric heater according to claim 1, characterized in that: A raised handle seat (7) is provided on the top of the rock wool box (2), and a through groove is provided in the handle seat (7).

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