Tubular short-circuit heater

Abstract

The utility model belongs to the technical field of heaters, in particular to a tubular short-circuit heater, which comprises a heater body, a fixed seat and an outer protective tube, four connecting pieces are arranged on the heater body in an annular array, the connecting pieces are connected with the fixed seat in a matched manner, and the heater body is matched with the fixed seat. According to the tubular short-circuit heater designed by the utility model, the connecting piece acts between the heater body and the fixed seat, so that the heater body and the fixed seat can be conveniently detached and used, the use effect is improved, and the scale scraping piece is designed to scrape the scale when the outer protective pipe is used for heating and the scale is attached to the outer wall. And the L-shaped scraping rod rotates and scrapes the outer wall of the outer protection pipe, so that water scales on the outer protection pipe can be conveniently removed, the cleaning convenience is improved, and the situation that the heat conduction effect of the outer protection pipe becomes poor due to attachment of the water scales, and consequently the heating efficiency is affected can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heaters, in particular to a tubular short-circuit heater. Background Art

[0002] A tubular short-circuit heater is a device used to heat fluids or gases. It consists of a tubular heating element and a shell. The heating element is usually made of metal or alloy and can generate heat through resistance heating. This type of heater is often used in many applications, such as industrial heating, heating fluid delivery pipelines, heating air or gas, etc. It has the advantages of simple structure, high heating efficiency, and fast response speed. It is widely used in various industrial processes. When using existing tubular short-circuit heaters, an outer protective tube is generally used to protect the heating tube to avoid scaling on the heating tube due to heating, which affects the heating efficiency. However, scaling will also form on the outer protective tube, and it cannot be easily cleaned, which affects the heating effect. The outer protective tube is not convenient for the heater to be disassembled and used, which affects the later maintenance and use. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies of the prior art, the utility model provides a tubular short-circuit heater, which solves the problem that the tubular short-circuit heater mentioned in the above background technology is inconvenient to clean scale and inconvenient to disassemble and assemble.

[0005] (II) Technical solution

[0006] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0007] A tubular short-circuit heater comprises a heater body, a fixing seat and an outer protective tube. The heater body is provided with four connecting pieces in a ring array, the connecting pieces are connected to the fixing seat, the heater body is provided with the fixing seat, the fixing seat is provided with an outer protective tube, the fixing seat is provided with a scraper, and the scraper is provided to fit the outer protective tube.

[0008] Furthermore, the heater body is composed of a heating seat, a connecting platform and a heating tube. The heating seat is fixedly connected to the connecting platform. The connecting platform is fixedly connected with a heating tube. The heating tube and the heating seat are cooperatively connected.

[0009] Furthermore, the connecting member is composed of a positioning pin, a shift block and a spring, the positioning pin is fixedly connected to the shift block, the shift block is fixedly connected to the spring, the shift block is slidably connected to the connecting platform, and the other end of the spring is fixedly connected to the connecting platform.

[0010] Furthermore, a limiting hole is provided on the fixing seat, the limiting hole is connected and arranged in cooperation with the positioning pin, and a rotation groove is provided on the fixing seat.

[0011] Furthermore, one end of the outer protective tube away from the fixing seat is fixedly connected with a rotating shaft, the outer protective tube and the heating tube are sleeved together, and the outer protective tube is filled with magnesium oxide powder.

[0012] Furthermore, the scraper consists of a hydraulic drive disc, an L-shaped scraper rod and a rotating hole. The hydraulic drive disc is cooperatively arranged in a rotating groove. The hydraulic drive disc is fixedly connected with an L-shaped scraper rod. The L-shaped scraper rod is slidingly fitted with the outer wall of the outer protective tube. The L-shaped scraper rod is provided with a rotating hole, and the rotating hole is rotatably connected with the rotating shaft.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a tubular short-circuit heater, which has the following beneficial effects:

[0015] The tubular short-circuit heater designed by the utility model can realize convenient disassembly and use between the heater body and the fixing seat through the connecting piece acting between the connection between the heater body and the fixing seat, thereby improving the use effect. Through the design of the scraper, the outer protective tube can be used for heating. When scale adheres to the outer wall, the L-shaped scraper rod can be rotated and scraped on the outer wall of the outer protective tube to conveniently remove the scale on the outer protective tube, thereby improving the cleaning convenience and avoiding the deterioration of the thermal conductivity of the outer protective tube due to the adhesion of scale, thereby affecting the heating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the heater body of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the connector of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the fixing seat and the outer protective tube of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the scraper of the utility model.

[0021] In the figure: 1. heater body; 101. heating seat; 102. connecting platform; 103. heating tube; 2. connecting piece; 201. positioning pin; 202. shift block; 203. spring; 3. fixing seat; 301. limiting hole; 302. rotating groove; 4. outer protective tube; 401. rotating shaft; 5. scraper; 501. hydraulic drive disc; 502. L-shaped scraper rod; 503. rotating hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] like Figure 1-5As shown, a tubular short-circuit heater proposed in one embodiment of the utility model comprises a heater body 1, a fixing seat 3 and an outer protective tube 4. The tubular short-circuit heater designed in this scheme can be conveniently disassembled and assembled for use, and can also be conveniently cleaned and used. Four connecting members 2 are arranged in an annular array on the heater body 1. The connecting members 2 are connected and arranged in cooperation with the fixing seat 3. The heater body 1 is arranged in cooperation with the fixing seat 3. The outer protective tube 4 is arranged in cooperation with the fixing seat 3. A scraper 5 is arranged in cooperation with the outer protective tube 4. The device is arranged by conduction. The wire is electrically connected to an external control device, and the operating state of the device is controlled by the external control device. When the heater body 1 is connected with the fixing seat 3, the connecting piece 2 can be conveniently connected together, and the heating tube 103 is inserted into the inside of the outer protective tube 4 so that the connecting piece 2 on the heating seat 101 is aligned with the limiting hole 301, and the positioning pin 201 is inserted into the limiting hole 301, so that the connecting platform 102 and the fixing seat 3 are connected and used in cooperation, and convenient connection and use are realized. When disassembling, the spring 203 can be squeezed and contracted and maintained by buckling and pulling the shifting block 202. The spring 203 rebounds after the block 202 is released, so that the positioning pin 201 is reset and waits for the next connection. Through the design, efficient disassembly and assembly can be achieved. The interior of the outer protective tube 4 is filled with magnesium oxide powder to meet the heat conduction of the heating tube 103. When the outer protective tube 4 acts on the outside of the heating tube 103 during heating, the outer wall of the outer protective tube 4 will be heated, resulting in scale adhered to the outer wall of the outer protective tube 4, thereby affecting the outer protective tube 4. The heat conduction effect of the protective tube 4 can conveniently remove the scale on the outer wall of the outer protective tube 4 through the design of the scraper 5. Through the rotation of the hydraulic drive disk 501, the hydraulic drive disk 501 will move inside the rotating groove 302, so that the rotating hole 503 opened at one end of the L-shaped scraper rod 502 rotates on the rotating shaft 401, so that the L-shaped scraper rod 502 is used to scrape the outer wall of the outer protective tube 4, which can remove the scale on the outer wall of the outer protective tube 4, meet the use requirements, and improve the heat conduction effect. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0025] like Figure 2 As shown, in some embodiments, the heater body 1 is composed of a heating seat 101, a connecting platform 102 and a heating tube 103. The heating seat 101 is fixedly connected to the connecting platform 102, and the heating tube 103 is fixedly connected to the connecting platform 102. The heating tube 103 and the heating seat 101 are matched and connected. The heater body 1 meets the heating use requirements and ensures the use effect.

[0026] like Figure 3As shown, in some embodiments, the connecting member 2 is composed of a positioning pin 201, a shift block 202 and a spring 203. The positioning pin 201 is fixedly connected to the shift block 202, the shift block 202 is fixedly connected to the spring 203, the shift block 202 is slidably connected to the connecting platform 102, and the other end of the spring 203 is fixedly connected to the connecting platform 102. The connecting member 2 can facilitate the connection and use of the heater body 1 and the fixing seat 3.

[0027] like Figure 4 As shown, in some embodiments, a limiting hole 301 is provided on the fixing seat 3, the limiting hole 301 is connected with the positioning pin 201, a rotating groove 302 is provided on the fixing seat 3, and a rotating shaft 401 is fixedly connected to one end of the outer protective tube 4 away from the fixing seat 3, the outer protective tube 4 is sleeved with the heating tube 103, and the outer protective tube 4 is filled with magnesium oxide powder. The fixing seat 3 meets the connection use of the outer protective tube 4, and the outer protective tube 4 meets the protection use of the heating tube 103.

[0028] like Figure 5 As shown, in some embodiments, the scraper 5 is composed of a hydraulic drive disk 501, an L-shaped scraper rod 502 and a rotating hole 503. The hydraulic drive disk 501 is arranged in a rotating groove 302. The L-shaped scraper rod 502 is fixedly connected to the hydraulic drive disk 501. The L-shaped scraper rod 502 is slidably fitted with the outer wall of the outer protective tube 4. The L-shaped scraper rod 502 is provided with a rotating hole 503. The rotating hole 503 is rotatably connected with the rotating shaft 401. The scraper 5 can prevent scaling on the outer wall of the outer protective tube 4 and affect the heat conduction effect.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tubular short-circuit heater, comprising a heater body (1), a fixing seat (3) and an outer protective tube (4), characterized in that: The heater body (1) is provided with four connecting members (2) in an annular array, the connecting members (2) are connected to a fixed seat (3), the heater body (1) is provided with a fixed seat (3), an outer protective tube (4) is provided on the fixed seat (3), a scraper (5) is provided on the fixed seat (3), and the scraper (5) is provided to fit the outer protective tube (4).

2. A tubular short-circuit heater according to claim 1, characterized in that: The heater body (1) is composed of a heating seat (101), a connecting platform (102) and a heating tube (103); the heating seat (101) is fixedly connected to the connecting platform (102); the connecting platform (102) is fixedly connected to the heating tube (103); and the heating tube (103) and the heating seat (101) are arranged in a coordinated connection.

3. A tubular short-circuit heater according to claim 1, characterized in that: The connecting member (2) is composed of a positioning pin (201), a shifting block (202) and a spring (203); the positioning pin (201) is fixedly connected to the shifting block (202); the shifting block (202) is fixedly connected to the spring (203); the shifting block (202) is slidably connected to the connecting platform (102); and the other end of the spring (203) is fixedly connected to the connecting platform (102).

4. A tubular short-circuit heater according to claim 1, characterized in that: The fixing seat (3) is provided with a limiting hole (301), the limiting hole (301) is connected and arranged in cooperation with the positioning pin (201), and the fixing seat (3) is provided with a rotation groove (302).

5. The tubular short-circuit heater according to claim 1, characterized in that: One end of the outer protective tube (4) away from the fixed seat (3) is fixedly connected to a rotating shaft (401); the outer protective tube (4) and the heating tube (103) are sleeved together; and the outer protective tube (4) is filled with magnesium oxide powder.

6. A tubular short-circuit heater according to claim 1, characterized in that: The scraper (5) is composed of a hydraulic drive disc (501), an L-shaped scraper rod (502) and a rotating hole (503); the hydraulic drive disc (501) is arranged in a cooperative manner in the rotating groove (302); the hydraulic drive disc (501) is fixedly connected with the L-shaped scraper rod (502); the L-shaped scraper rod (502) is slidably fitted with the outer wall of the outer protective tube (4); the L-shaped scraper rod (502) is provided with a rotating hole (503); the rotating hole (503) is rotatably connected with the rotating shaft (401).

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