Single-end electric heating tube for internal heating of ceramic filter element

Abstract

The utility model discloses a single-ended electric heating tube for heating the interior of a ceramic filter element. The single-ended electric heating tube comprises a single-ended electric heating tube main body and an internal thread interface, the ceramic filter element is mounted at the second end of the air guide pipe auxiliary pipe; the first end of the single-end electric heating tube body is inserted into the ceramic filter element, and an external thread connector is arranged on the outer wall of the second end of the single-end electric heating tube body. The internal thread interface is arranged on the second side wall of the main gas-guide tube; the external thread connector is in threaded fit with the internal thread connector. According to the utility model, the external thread interface is arranged at the end part of the single-end electric heating tube main body, the internal thread interface is arranged on the air guide tube main tube, and the external thread interface is in threaded fit with the internal thread interface, so that the installation of the single-end electric heating tube main body in the ceramic filter element is realized; the electric leakage risk in the gas-guide tube is eliminated; the electric heating tube is positioned in the ceramic filter element, so that the heating efficiency of the ceramic filter element is greatly improved, and the equipment cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating tubes, in particular to a single-ended electric heating tube for heating the interior of a ceramic filter element. Background Art

[0002] When ceramic filter elements used for gas purification are applied to environments requiring electric heating, a highly efficient electric heating tube is needed to directly heat the ceramic. This electric heating tube must maintain the stable temperature required for the ceramic filter element to operate. The heating process must meet safety standards for no electrical, air, or liquid leakage, and must be highly efficient and energy-efficient. However, currently available electric heating tubes do not have this specific design, forcing designs to heat the ceramic filter element indirectly. The typical method involves using an external heater to first heat a heat transfer medium, which is then transported to the ceramic filter element via a pipe for heating. During this transport process, significant heat is lost. When the ceramic filter element requires higher temperatures and greater heat output, indirect heating methods are difficult to implement while maintaining safety.

[0003] Therefore, it is necessary to develop a single-ended electric heating tube for heating the inside of a ceramic filter element to solve the above problems. Utility Model Content

[0004] The purpose of the present invention is to design a single-ended electric heating tube for heating the interior of a ceramic filter element in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A single-ended electric heating pipe for heating the interior of a ceramic filter element, wherein the air pipe comprises an air pipe main pipe and an air pipe auxiliary pipe, wherein the first end of the air pipe auxiliary pipe is connected to the first side of the air pipe main pipe, and the single-ended electric heating pipe comprises:

[0007] A single-ended electric heating pipe body; a ceramic filter element is installed on the second end of the air guide pipe auxiliary pipe; the first end of the single-ended electric heating pipe body is inserted into the ceramic filter element for installation, and an external threaded interface is provided on the outer wall of the second end of the single-ended electric heating pipe body;

[0008] Internal thread interface; the internal thread interface is arranged on the second side wall of the air duct main pipe; the external thread interface is threadedly matched with the internal thread interface.

[0009] The beneficial effects of the present invention are:

[0010] By providing an external threaded interface at the end of the single-ended electric heating tube body and an internal threaded interface on the main air duct, and then threadedly matching the external threaded interface with the internal threaded interface, the single-ended electric heating tube body can be installed in the ceramic filter element. This structural design allows the power supply wiring to be outside the air duct, eliminating the risk of leakage in the air duct; when the ceramic filter element needs to be heated, the electric heating tube power supply is turned on, and the electric heating tube itself generates heat to generate heat radiation. These heat radiations are inside the ceramic filter element, so most of the radiation acts on the ceramic filter element, greatly improving the heating efficiency. The entire heating process does not require other heat transfer media and auxiliary conveying equipment, saving equipment costs and eliminating many unsafe hidden dangers. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of part I in FIG.

[0013] In the figure: 1. External thread interface; 2. External hexagonal flange; 3. Single-ended electric heating tube body; 4. Support body; 5. Internal thread interface; 6. Sealing gasket; 7. Main air duct; 8. Sub-air duct. DETAILED DESCRIPTION

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present invention. It should be understood that the described embodiments are only a portion of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0016] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0017] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships 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 component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present utility model.

[0018] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0019] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be understood in a broad sense. For example, "connected" can mean 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 an indirect connection through an intermediate medium, or it can be the internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0020] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-2 As shown, a single-ended electric heating tube for heating the inside of a ceramic filter element, the air duct includes an air duct main tube 7 and an air duct auxiliary tube 8, the first end of the air duct auxiliary tube 8 is connected to the first side of the air duct main tube 7, and the single-ended electric heating tube includes:

[0022] The single-ended electric heating pipe body 3; the ceramic filter element is installed on the second end of the air guide pipe auxiliary tube 8; the first end of the single-ended electric heating pipe body 3 is inserted into the ceramic filter element for installation, and the outer wall of the second end of the single-ended electric heating pipe body 3 is provided with an external threaded interface 1;

[0023] Internal thread interface 5; the internal thread interface 5 is provided on the second side wall of the airway main pipe 7; the external thread interface 1 is threadedly matched with the internal thread interface 5;

[0024] Flange external hexagonal nut 2; flange external hexagonal nut 2 is welded to external thread interface 1;

[0025] The inner side of the internal thread interface 5 is also provided with an annular mounting groove, the sealing gasket 6 is placed in the mounting groove, the sealing gasket 6 is provided between the outer hexagonal nut 2 and the internal thread interface 5, the flange end of the outer hexagonal nut 2 fits with the sealing gasket 6;

[0026] Multiple support bodies 4; multiple support bodies 4 are evenly mounted on the outside of the single-ended electric heating tube body 3, and the outer walls of the multiple support bodies 4 are connected to the inner wall of the ceramic filter element, the single-ended electric heating tube body 3, the ceramic filter element, the external thread interface 1, and the internal thread interface 5 are coaxially arranged.

[0027] In the above embodiment, the flange external hexagonal 2 nut and the external threaded interface 1 are integrally formed (welded), similar to the flange external hexagonal 2 bolt, but a through hole is provided at the axial center of the bolt, and then the entire flange external hexagonal 2 bolt is welded to the second end outer wall of the single-end electric heating tube body 3.

[0028] The diameter and length of the single-ended electric heating pipe body 3 are determined based on the inner diameter and length of the ceramic filter element. The external threaded interface 1 and the external hexagonal flange 2 are welded to the connection end (second end) of the single-ended electric heating pipe body 3. The supports 4 are evenly distributed on the electric heating pipe body, forming a new electric heating pipe as a whole.

[0029] When installing the equipment, first install the internal threaded interface 5 on the surface of the main air duct 7 opposite the ceramic filter interface (air duct auxiliary tube 8). This internal threaded interface 5 matches the external threaded interface 1 of the new electric heating tube. Then, insert a sealing gasket 6 between the internal threaded interface 5 and the external hexagonal flange 2. Use a wrench to tighten the external hexagonal flange 2. The new electric heating tube is installed on the internal threaded interface 5 of the air duct and tightened to achieve the sealing requirement. Then, insert the ceramic filter element into the new electric heating tube and connect the ceramic filter element to the air duct auxiliary tube 8 in the original equipment. The support body 4 fixes the electric heating tube body in the center of the filter element. The original seal between the ceramic filter element and the air duct is not affected.

[0030] When the installed ceramic filter element is operating, the impure flue gas outside is filtered and purified by the filter element and enters the air duct through the interface between the filter element and the air duct. Since the electric heating pipe and the air duct are sealed with a threaded interface and a sealing gasket 6, air leakage is prevented. Moreover, since heat transfer media such as hot oil are excluded, there is no leakage problem. The single-ended electric heating pipe itself is a standard electrical product with qualified and reliable ground insulation performance. The threaded interface allows the power supply wiring to be located outside the air duct, eliminating the risk of leakage within the air duct.

[0031] When the ceramic filter element needs to be heated, the electric heating tube is connected to the power supply. The electric heating tube generates heat and generates heat radiation. This heat radiation is located inside the filter element, so the vast majority of the radiation acts on the ceramic filter element, greatly improving heating efficiency. The entire heating process does not require other heat transfer media and auxiliary conveying equipment, saving equipment costs and eliminating many unsafe hidden dangers.

[0032] 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 technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A single-ended electric heating tube for heating the interior of a ceramic filter element, wherein the air duct comprises an air duct main tube and an air duct auxiliary tube, wherein the first end of the air duct auxiliary tube is connected to the first side of the air duct main tube, and wherein: Single-ended electric heating tube includes: A single-ended electric heating pipe body; a ceramic filter element is installed on the second end of the air guide pipe auxiliary pipe; the first end of the single-ended electric heating pipe body is inserted into the ceramic filter element for installation, and an external threaded interface is provided on the outer wall of the second end of the single-ended electric heating pipe body; Internal thread interface; the internal thread interface is arranged on the second side wall of the air duct main pipe; the external thread interface is threadedly matched with the internal thread interface.

2. The single-ended electric heating tube for internal heating of a ceramic filter element according to claim 1, characterized in that: The single-ended electric heating pipe also includes a flange external hexagonal nut; the flange external hexagonal nut is welded to the external thread interface, and the flange end of the flange external hexagonal nut is fitted with the inner side of the internal thread interface.

3. The single-ended electric heating tube for internal heating of a ceramic filter element according to claim 2, characterized in that: The single-ended electric heating pipe further comprises a sealing gasket, which is arranged between the outer hexagonal nut of the flange and the inner thread interface.

4. The single-ended electric heating tube for internal heating of a ceramic filter element according to claim 3, characterized in that: An annular mounting groove is also provided on the inner side of the internal thread interface, and a sealing gasket is placed in the mounting groove.

5. The single-ended electric heating tube for internal heating of a ceramic filter element according to claim 1, characterized in that: The single-ended electric heating tube also includes multiple supporting bodies, which are evenly mounted on the outside of the single-ended electric heating tube body, and the outer walls of the multiple supporting bodies are connected to the inner wall of the ceramic filter element. The single-ended electric heating tube body, ceramic filter element, external thread interface, and internal thread interface are coaxially arranged.

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