Open type heater

Abstract

The utility model relates to the technical field of heaters, in particular to an open type heater which comprises a heating cavity and a ceramic tube, a positioning structure is arranged in the heating cavity, an alignment assembly is arranged on a bottom plate of the ceramic tube, when the ceramic tube is connected with the heating cavity, the ceramic tube is rotated, the alignment assembly is matched with the positioning structure, and the positioning structure is arranged on the bottom plate of the ceramic tube. The ceramic tube can be coaxially connected with the heating cavity, so that the ceramic tube is locked in the axial direction of the heating cavity; a locking assembly is further arranged in the heating cavity, and in the rotating process of the ceramic tube, the locking assembly is triggered and can lock the ceramic tube in the circumferential direction of the heating cavity, so that the ceramic tube is fixed in the heating cavity; the ceramic tube can be locked in the axial direction and the circumferential direction through cooperation of the alignment assembly, the positioning structure and the locking assembly, meanwhile, disassembly between the ceramic tube and the heating cavity can be completed by arranging the unlocking piece, and the overall operation is simple.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, specifically an open-type heater. Background Technology

[0002] With economic development and improved living standards, more and more heaters are being adopted. Nowadays, electric heaters generally utilize the Joule effect of electric current, using the heat generated when current passes through a resistive heating material to heat the material.

[0003] Traditional electric heaters on the market all use resistance wires placed inside metal tubes, and then fill the metal tubes with magnesium powder to achieve insulation between the resistance wires and the metal tubes. During the production process, the resistance wires cannot be observed with the naked eye when they are assembled in the tubes. They can only be inspected by X-ray after assembly. Furthermore, faulty heating tubes can only be scrapped and cannot be reverse-corrected, resulting in very serious production waste. Utility Model Content

[0004] The purpose of this invention is to provide an open-type heater to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An open-type heater includes a heating chamber and a ceramic tube. A positioning structure is provided in the heating chamber, and an alignment component is provided on the bottom plate of the ceramic tube. When the ceramic tube is connected to the heating chamber, the ceramic tube is rotated, and the alignment component cooperates with the positioning structure to coaxially connect the ceramic tube and the heating chamber, thereby locking the ceramic tube along the axial direction of the heating chamber.

[0007] The heating chamber is also equipped with a locking component. When the ceramic tube rotates, the locking component is triggered and can lock the ceramic tube in the circumferential direction of the heating chamber, thereby fixing the ceramic tube in the heating chamber.

[0008] The open heater as described above: the positioning structure includes a connecting cylinder connected to the heating cavity, the connecting cylinder having at least two sets of fitting grooves equidistantly arranged along its circumference, the fitting grooves including arc-shaped grooves, the two ends of the arc-shaped grooves being respectively connected to a horizontal groove and an alignment hole, and the alignment hole being provided with a guide surface.

[0009] The open heater as described above: the alignment assembly comprises a placing groove opened on the bottom plate, at least two groups of the placing grooves are equidistantly arranged along the circumferential direction of the bottom plate, and a sliding rod is arranged in each group of the placing grooves, a second spring is slidingly arranged on the sliding rod, one end of the second spring is in abutment with the bottom plate, and the other end is in abutment with a sliding sleeve arranged on the sliding rod, and an alignment piece is arranged on the sliding sleeve.

[0010] The open heater as described above: the alignment piece comprises an alignment rod arranged on the sliding sleeve, a locking block is arranged on the alignment rod, the locking block is matched with the alignment hole, and the alignment rod can be guided to be combined with the embedded groove body.

[0011] The open heater as described above: the locking assembly comprises a fixed sleeve arranged in the connecting cylinder, at least two groups of the fixed sleeves are equidistantly arranged along the circumferential direction of the connecting cylinder, an insertion rod is slidingly arranged in each group of the fixed sleeves, a first spring is slidingly arranged on the insertion rod, one end of the first spring is in abutment with the fixed sleeve, and the other end is in abutment with a locking piece arranged at the end of the insertion rod.

[0012] The open heater as described above: the locking piece comprises a wedge-shaped block fixedly connected with the insertion rod, the wedge-shaped block is connected with a lifting piece arranged in the connecting cylinder through a hinged rod, the lifting piece can drive the wedge-shaped block to slide along the radial direction of the connecting cylinder, so that the ceramic tube is unlocked in the circumferential direction.

[0013] The open heater as described above: the lifting piece comprises a lifting cylinder, the lifting cylinder is sleeved on a pipeline formed in the connecting cylinder, and the lifting cylinder is connected with an unlocking piece arranged on the connecting cylinder, when the unlocking piece rotates relative to the connecting cylinder, the lifting cylinder can slide along the axial direction of the connecting cylinder.

[0014] The open heater as described above: the unlocking piece comprises a sleeving ring sleeved on the lifting cylinder, the sleeving ring is fixed with an unlocking ring rotatably arranged on the outer wall of the connecting cylinder, a protrusion is formed on the inner wall of the sleeving ring, and the protrusion is slidingly arranged in a spiral groove opened on the outer wall of the lifting cylinder.

[0015] Compared with the prior art, the open heater has the following beneficial effects:

[0016] When connecting the heating cavity and the ceramic tube, by setting the alignment assembly, the ceramic tube can be locked in the axial direction of the heating cavity through the cooperation between the alignment assembly and the positioning structure. During the cooperation between the alignment assembly and the positioning structure, the alignment rod can clamp the connecting barrel under the reaction force of the second spring, so that the ceramic tube cannot be easily rotated in reverse in the subsequent process, and relative rotation between the ceramic tube and the heating cavity is avoided.

[0017] Meanwhile, by setting the locking assembly, the alignment rod can be locked in the horizontal groove during the sliding process of the alignment rod, so as to lock the ceramic tube in the circumferential direction, preventing the ceramic tube from loosening due to vibration of the heating cavity caused by the external environment during equipment operation.

[0018] When disassembling, the alignment rod can be released by driving the unlocking member, and the ceramic tube can be rotated in reverse to complete the disassembly operation of the ceramic tube. Compared with the traditional heater, the heater has the characteristics of disassembly, and the problematic heater can be corrected in reverse to avoid production waste, and the disassembly and installation operation is simple. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an open heater.

[0020] Figure 2 It is a structural schematic diagram of the inside of the heating cavity in the open heater.

[0021] Figure 3 It is a structural schematic diagram of the positioning structure in the open heater.

[0022] Figure 4 It is a structural schematic diagram of the connection between the locking assembly and the unlocking member in the open heater.

[0023] Figure 5 It is a structural schematic diagram of the locking assembly in the open heater.

[0024] Figure 6 It is a structural schematic diagram of the connection between the alignment assembly and the ceramic tube in the open heater.

[0025] Figure 7 It is a structural schematic diagram of the alignment assembly in the open heater.

[0026] In the figure: 1, spiral heating wire; 2, heating cavity; 3, thermocouple; 4, ceramic tube; 401, handle; 5, threaded ceramic tube; 6, heat preservation layer; 7, blind cover; 8, unlocking ring; 9, bottom plate; 901, placing groove; 10, sleeving ring; 1001, protrusion; 11, lifting cylinder; 1101, spiral groove; 12, wedge block; 1201, abutting surface; 1202, inclined surface; 13, fixing sleeve; 1301, protruding column; 14, insertion rod; 1401, groove; 15, hinged rod; 16, first spring; 17, alignment rod; 1701, limiting sheet; 18, locking block; 19, sliding sleeve; 20, second spring; 21, sliding rod; 22, connecting cylinder; 2201, arc-shaped groove; 2202, horizontal groove; 2203, alignment hole; 2204, guide arc surface; 2205, pipeline. DETAILED DESCRIPTION

[0027] Various exemplary embodiments, features, and aspects of the present application will be described herein in detail with reference to the drawings. Like reference numerals in the drawings denote functionally identical or similar elements. Although various aspects of the embodiments are illustrated in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0028] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0029] In addition, for the purpose of convenience and brevity, detailed descriptions of well-known functions and structures incorporated in the application are omitted. It will be appreciated that where specific details of certain method, apparatus, and / or other implementations are set forth in order to provide a thorough understanding, the application can be practiced with or without one or more of these details, without detracting from the spirit or essential character of the application.

[0030] Referring to Figures 1-7 , the utility model discloses an open type heater, comprising:

[0031] The heating cavity 2 and the ceramic tube 4, for details, please refer to Figure 1 、 Figure 2One end of the heating cavity 2 is provided with a blind cover 7, the other end is provided with a connecting cylinder 22, and the outer side of the heating cavity 2 is sleeved with a heat preservation layer 6, the ceramic tube 4 is provided with a thermocouple 3 and a threaded porcelain tube 5, the outer side of the threaded porcelain tube 5 is provided with a spiral heating wire 1, when the ceramic tube 4 and the heating cavity 2 are fixedly connected, the heater is opened and works, the gas enters the heating cavity 2 from the blind cover 7, then passes through the ceramic tube 4, exchanges heat with the spiral heating wire 1 in the cavity, and then goes out from the outlet of the connecting cylinder 22, during the gas flow process, the thermocouple 3 arranged at the outlet is passed, the power output is controlled by the control cabinet through the temperature feedback, so that the gas reaches the target temperature, and the heated gas directly contacts and exchanges heat with the spiral heating wire 1 during heating, so that the heat exchange efficiency is high.

[0032] The heating cavity 2 is provided with a positioning structure, the bottom plate 9 of the ceramic tube 4 is provided with a positioning assembly, when the ceramic tube 4 is connected with the heating cavity 2, the positioning assembly is matched with the positioning structure by rotating the ceramic tube 4, so that the ceramic tube 4 and the heating cavity 2 are coaxially connected, and the ceramic tube 4 is locked along the axial direction of the heating cavity 2;

[0033] Please refer to Figure 2 、 Figure 3 The positioning structure includes a connecting cylinder 22 connected with the heating cavity 2, the connecting cylinder 22 is equidistantly provided with at least two groups of embedded groove bodies along the circumferential direction thereof, the embedded groove body includes an arc-shaped groove 2201, two ends of the arc-shaped groove 2201 are respectively connected with a horizontal groove 2202 and a positioning hole 2203, and a guide arc surface 2204 is arranged on the positioning hole 2203;

[0034] Preferably, please refer to Figure 3 The above-mentioned embedded groove body is equidistantly provided with three groups along the circumferential direction of the connecting cylinder 22, in particular, the diameter of the positioning hole 2203 is greater than the groove width of the arc-shaped groove 2201, and the guide arc radius of the guide arc surface 2204 is large, so that the subsequent positioning assembly can be combined with the embedded groove body, and the positioning assembly is clamped in the embedded groove body, so that the ceramic tube 4 can be locked in the axial direction of the heating cavity 2.

[0035] The positioning assembly includes a placing groove 901 opened on the bottom plate 9, the placing groove 901 is equidistantly provided with at least two groups along the circumferential direction of the bottom plate 9, and a sliding rod 21 is arranged in each group of the placing groove 901, a second spring 20 is slidably arranged on the sliding rod 21, one end of the second spring 20 abuts against the bottom plate 9, the other end abuts against a sliding sleeve 19 arranged on the sliding rod 21, and a positioning piece is arranged on the sliding sleeve 19;

[0036] The alignment part includes an alignment rod 17 arranged on the sliding sleeve 19, and a locking block 18 arranged on the alignment rod 17, which cooperates with the alignment hole 2203 and can guide the alignment rod 17 to the combined slot body;

[0037] Specifically, please refer to Figure 6 、 Figure 7 The second spring 20 is always in a compressed state, and the second spring 20 in the compressed state pushes the sliding sleeve 19 to be close to the axis of the bottom plate 9. When the ceramic tube 4 is connected with the heating cavity 2, the handheld handle 401 pushes the ceramic tube 4 into the heating cavity 2. After the alignment rod 17 contacts the connecting cylinder 22, the pushing force is kept unchanged, and the ceramic tube 4 is rotated in the same direction. In the rotating process, the alignment rod 17 can be coaxial with the alignment hole 2203 under the guidance of the guide camber surface 2204. In this process, the extrusion of the slot wall of the alignment hole 2203 on the alignment rod 17 can force the sliding sleeve 19 to move a certain distance along the slide rod 21 away from the axis of the connecting cylinder 22. At the same time, under the action of the pushing force, the alignment rod 17 and the locking block 18 will penetrate through the connecting cylinder 22, until the limiting piece 1701 formed on the alignment rod 17 is attached to the connecting cylinder 22, the pushing force is removed, and then the ceramic tube 4 is continuously rotated in the same direction. The alignment rod 17 will slide in the arc-shaped slot 2201.

[0038] In this process, the cooperation between the locking block 18 and the limiting piece 1701 can lock the ceramic tube 4 in the axial direction until the alignment rod 17 is combined with the horizontal slot 2202. When the ceramic tube 4 is continuously rotated, the alignment rod 17 will slide along the horizontal slot 2202. In the sliding process, the existence of the horizontal slot 2202 makes the distance between the alignment rod 17 and the axis of the connecting cylinder 22 gradually shorten. However, when the alignment rod 17 moves to the end of the travel of the horizontal slot 2202, the extrusion of the sliding sleeve 19 on the second spring 20 is still greater than that in the initial state. At this time, the reaction force of the second spring 20 on the sliding sleeve 19 can make the alignment rod 17 clamp the connecting cylinder 22, so that the ceramic tube 4 cannot be easily rotated in the opposite direction, avoiding the relative rotation between the ceramic tube 4 and the heating cavity 2. At the same time, by arranging the horizontal slot 2202, the ceramic tube 4 cannot be automatically reversed.

[0039] Further, please refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 The heating cavity 2 is also provided with a locking assembly. In the rotating process of the ceramic tube 4, the locking assembly is triggered to lock the ceramic tube 4 in the circumferential direction of the heating cavity 2, so as to fix the ceramic tube 4 in the heating cavity 2;

[0040] The locking assembly comprises a fixed sleeve 13 arranged in the connecting cylinder 22, at least two groups of the fixed sleeve 13 are equidistantly arranged along the circumferential direction of the connecting cylinder 22, a plug rod 14 is slidingly arranged in each group of the fixed sleeve 13, a first spring 16 is slidingly arranged on the plug rod 14, one end of the first spring 16 abuts against the fixed sleeve 13, and the other end abuts against a locking piece arranged at the end of the plug rod 14;

[0041] Preferably, the fixed sleeve 13 is equidistantly arranged along the circumferential direction of the connecting cylinder 22 in three groups, and the plug rod 14 is arranged along the radial direction of the connecting cylinder 22, please refer to Figure 5 The inner wall of each group of the fixed sleeve 13 is equidistantly provided with two groups of protruding columns 1301 along the circumferential direction thereof, the protruding columns 1301 are matched with grooves 1401 equidistantly arranged along the circumferential direction of the plug rod 14, under the cooperation of the protruding columns 1301 and the grooves 1401, the plug rod 14 can only continue to slide along the axial direction of the fixed sleeve 13 (i.e. the radial direction of the connecting cylinder 22), and the first spring 16 is always in a compressed state, the first spring 16 in the compressed state pushes the locking piece to be close to the axis of the connecting cylinder 22, when the alignment rod 17 slides along the horizontal groove 2202, the locking piece cooperates with the alignment rod 17 to lock the alignment rod 17 in the horizontal groove 2202, so as to lock the ceramic tube 4 in the circumferential direction, and prevent the ceramic tube 4 from loosening due to the vibration of the heating cavity 2 caused by the external environment during the operation of the equipment.

[0042] Please refer to Figure 5 The locking piece comprises a wedge-shaped block 12 fixedly connected with the plug rod 14, the wedge-shaped block 12 is connected with a lifting piece arranged in the connecting cylinder 22 through a hinged rod 15, the lifting piece can drive the wedge-shaped block 12 to slide along the radial direction of the connecting cylinder 22, so as to unlock the ceramic tube 4 in the circumferential direction;

[0043] Please refer to Figure 5 The wedge-shaped block 12 is arranged in a structure similar to a right-angled trapezoid, and comprises an inclined surface 1202 and an abutting surface 1201.

[0044] The lifting piece comprises a lifting cylinder 11, the lifting cylinder 11 is sleeved on a pipeline 2205 formed in the connecting cylinder 22, and the lifting cylinder 11 is connected with an unlocking piece arranged on the connecting cylinder 22, when the unlocking piece rotates relative to the connecting cylinder 22, the lifting cylinder 11 can be driven to slide along the axial direction of the connecting cylinder 22;

[0045] Please refer to Figure 5When the alignment rod 17 slides along the horizontal groove 2202, the alignment rod 17 can first contact the inclined surface 1202, and the extrusion of the alignment rod 17 on the inclined surface 1202 can force the wedge block 12 to gradually move away from the axis of the connecting cylinder 22 in the axial direction of the fixed sleeve 13 until the alignment rod 17 is separated from the inclined surface 1202 and the upper bottom surface of the wedge block 12 when the alignment rod 17 moves to the stroke end of the horizontal groove 2202. At this time, the first spring 16 releases the elastic potential energy to push the wedge block 12 back to the initial position, and then the abutting surface 1201 contacts the alignment rod 17 to lock the alignment rod 17 in the horizontal groove 2202, thereby locking the ceramic tube 4 in the circumferential direction. When the spiral heating wire 1 in the ceramic tube 4 is damaged, the unlocking member can be driven to gradually move the wedge block 12 away from the axis of the connecting cylinder 22 to release the alignment rod 17, and then the hand-held handle 401 is used to rotate the ceramic tube 4 in the reverse direction until it cannot be rotated, and then the ceramic tube 4 is pulled out, thereby completing the disassembly of the ceramic tube 4.

[0046] In detail, the unlocking member includes a sleeve ring 10 sleeved on the lifting cylinder 11, the sleeve ring 10 is fixed with an unlocking ring 8 rotatably installed on the outer wall of the connecting cylinder 22, and a protrusion 1001 is formed on the inner wall of the sleeve ring 10 and slidably arranged in a spiral groove 1101 formed in the outer wall of the lifting cylinder 11.

[0047] In the initial state, under the action of the elastic potential energy stored in the first spring 16, the three wedge blocks 12 move close to the axis of the connecting cylinder 22, and at this time, due to the connection of the fixed-length hinged rod 15, the wedge block 12 close to the axis of the connecting cylinder 22 can push the lifting cylinder 11 away from the fixed sleeve 13, and at the same time, the protrusion 1001 is located at the stroke end of the spiral groove 1101 close to the fixed sleeve 13. When it is necessary to disassemble the ceramic tube 4, the unlocking ring 8 is rotated counterclockwise (refer to Figure 4 、 Figure 5 ), the contact extrusion of the protrusion 1001 on the groove wall of the spiral groove 1101 can push the lifting cylinder 11 close to the fixed sleeve 13, and then the lifting cylinder 11 can push the wedge block 12 away from the axis of the connecting cylinder 22 under the connection of the fixed-length hinged rod 15, thereby releasing the alignment rod 17, and when the unlocking ring 8 cannot be rotated, the ceramic tube 4 is rotated in the reverse direction, thereby completing the disassembly of the ceramic tube 4. After the ceramic tube 4 is disassembled, the spiral heating wire 1 in the ceramic tube 4 can be replaced. Compared with the traditional heater, the heater has the characteristics of disassembly, and the defective heater can be corrected in the reverse direction, thereby avoiding production waste and simplifying the disassembly and installation operation.

[0048] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0049] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. An open heater characterized in that, The application relates to a ceramic tube locking device. The application relates to a ceramic tube locking device. The positioning structure comprises a connecting cylinder (22) connected with the heating cavity (2), at least two groups of embedded grooves are equidistantly arranged along the circumferential direction of the connecting cylinder (22), the embedded grooves comprise arc-shaped grooves (2201), the two ends of the arc-shaped grooves (2201) are respectively connected with horizontal grooves (2202) and alignment holes (2203), and a guide arc surface (2204) is arranged on the alignment hole (2203).

2. An open heater as claimed in claim 1, wherein The alignment assembly comprises a placing groove (901) arranged on the bottom plate (9), at least two groups of placing grooves (901) are equidistantly arranged along the circumferential direction of the bottom plate (9), a sliding rod (21) is arranged in each group of placing grooves (901), a second spring (20) is slidingly arranged on the sliding rod (21), one end of the second spring (20) abuts against the bottom plate (9), the other end abuts against a sliding sleeve (19) arranged on the sliding rod (21), and an alignment piece is arranged on the sliding sleeve (19).

3. An open heater as claimed in claim 2, wherein The alignment piece comprises an alignment rod (17) arranged on the sliding sleeve (19), a locking block (18) is arranged on the alignment rod (17), the locking block (18) is matched with the alignment hole (2203), and the alignment rod (17) can be guided into the embedded groove.

4. An open heater as claimed in claim 3, wherein The locking assembly comprises a fixing sleeve (13) arranged in the connecting cylinder (22), at least two groups of fixing sleeves (13) are equidistantly arranged along the circumferential direction of the connecting cylinder (22), a plug rod (14) is slidingly arranged in each group of fixing sleeves (13), a first spring (16) is slidingly arranged on the plug rod (14), one end of the first spring (16) abuts against the fixing sleeve (13), and the other end abuts against a locking piece arranged at the end of the plug rod (14).

5. An open heater as claimed in claim 2, wherein, The locking piece comprises a wedge-shaped block (12) fixedly connected with the plug rod (14), the wedge-shaped block (12) is connected with a lifting piece arranged in the connecting cylinder (22) through a hinged rod (15), the lifting piece can drive the wedge-shaped block (12) to slide along the radial direction of the connecting cylinder (22), so that the ceramic tube (4) is unlocked in the circumferential direction.

6. An open heater according to claim 5, wherein ​ 7. An open heater according to claim 6, wherein The lifting member comprises a lifting cylinder (11) sleeved on a pipeline (2205) formed inside the connecting cylinder (22), and the lifting cylinder (11) is connected with an unlocking member arranged on the connecting cylinder (22), and when the unlocking member rotates relative to the connecting cylinder (22), the lifting cylinder (11) can be driven to slide along the axial direction of the connecting cylinder (22).

8. An open heater according to claim 7, wherein The unlocking member comprises a sleeving ring (10) sleeved on the lifting cylinder (11), the sleeving ring (10) is fixed with an unlocking ring (8) rotatably arranged on the outer wall of the connecting cylinder (22), and the inner wall of the sleeving ring (10) is formed with a protrusion (1001) slidingly arranged in a spiral groove (1101) formed on the outer wall of the lifting cylinder (11).

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