Cylinder type heater

Abstract

The utility model discloses a cylindrical heater, which comprises a heater body and a power supply circuit, the wiring mechanism is arranged on the heater body, the wiring mechanism comprises a shell, a contact arranged in the shell, a threaded groove formed in the shell and located in the top of the contact and a locking assembly rotationally arranged on the shell, and the contact is electrically connected with the heater body; the locking assembly is used for synchronously rotating when the power supply circuit rotates in the thread groove and is close to the contact, and is also used for preventing the power supply circuit from reversely rotating in the thread groove and moving towards one side far away from the contact; and the unlocking assembly is used for releasing the braking of the locking assembly on the power supply line. According to the utility model, the power supply circuit can be quickly assembled and disassembled on the wiring mechanism, and the stability after installation is good, thereby solving the problems that the assembly and disassembly between the cylindrical heater and the power supply circuit are troublesome, and the stability after installation is insufficient.

Description

Technical Field

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

[0002] A cylindrical heater is an electrical component that specifically converts electrical energy into heat energy. It has a metal tube as its shell, and electric heating wires are evenly distributed along the central axis inside the tube. The gap is filled and compacted with magnesia sand with good insulation and heat conduction performance, and both ends of the tube mouth are sealed with silica gel. The cylindrical heater can be used to heat air, metal molds, and various liquids. However, the existing cylindrical heater is connected to the power supply line through fixed methods such as welding. When it is necessary to repair or replace the cylindrical heater, it is often necessary for the staff to cut off the connection between the power supply line and the original cylindrical heater, and then wrap the line on the new cylindrical heater and the power supply line together with tools such as insulating tape. However, this method is very troublesome to handle, and the stability of the insulating tape binding the circuit is insufficient, and there is a situation of loosening. Once loosened, it will pose a greater safety hazard to the cylindrical heater, so it is difficult to meet the social needs. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a cylindrical heater aiming at the above deficiencies at present, realizing convenient loading and unloading between the cylindrical heater and the power supply line, and being stable and reliable after installation.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions: A cylindrical heater, comprising,

[0005] A heater body and a power supply line;

[0006] A wiring mechanism, which is arranged on the heater body. The wiring mechanism includes a shell, a contact arranged inside the shell, a threaded groove opened inside the shell and located at the top of the contact, and a locking component rotatably arranged on the shell. The contact is electrically connected to the heater body, and the power supply line is in threaded cooperation with the threaded groove, so that the power supply line can be close to and contact the contact;

[0007] The locking component is used to rotate synchronously when the power supply line rotates in the threaded groove and approaches the contact, and is also used to prevent the power supply line from rotating in the reverse direction in the threaded groove and moving away from the contact side;

[0008] An unlocking component, which is used to release the braking of the locking component on the power supply line.

[0009] Further, the heater body includes a heating tube and a threaded column arranged at one end of the heating tube. The shell is arranged at the end of the threaded column away from the heating tube, and the contact is electrically connected to the heating tube.

[0010] Further, the power supply line includes a connecting line, a contact head disposed at one end of the connecting line close to the contact, a plug block disposed on the connecting line and having a rectangular shape, and a threaded rod disposed on the connecting line and located between the plug block and the contact head, and the threaded rod is in threaded engagement with the threaded groove.

[0011] Further, the locking assembly includes a ratchet rotatably disposed on the housing, a rectangular socket is formed at the center of the ratchet and is in insertion fit with the plug block, the ratchet is located at the top of the threaded groove, and the socket is in communication with the threaded groove, and a pawl cooperating with the ratchet is also rotatably disposed on the housing;

[0012] The plug block is inserted into the socket on the ratchet, the plug block moves synchronously when the threaded rod rotates, when the threaded rod rotates in the threaded groove and approaches the contact, it drives the ratchet to rotate synchronously in one direction, and the ratchet is blocked by the pawl when rotating in the other direction, and the unlocking assembly is used to separate the pawl from the ratchet.

[0013] Further, it further includes a sealing cover disposed on the top of the housing, the sealing cover is in insertion fit with the top of the housing, the plug block penetrates through the top wall of the sealing cover, the sealing cover does not rotate when the plug block rotates, a sealing piece is disposed on the plug block, when the plug block rotates and moves toward the side close to the contact, the sealing piece moves synchronously and drives the sealing cover to approach the housing, and the sealing piece covers the place where the plug block penetrates through the sealing cover to seal this place.

[0014] Further, the unlocking assembly includes a rotating shaft disposed at the rotation position of the pawl, the top end of the rotating shaft rotatably penetrates through the top wall of the sealing cover and is in dynamic sealing fit with it, and a lever is disposed at the top end of the rotating shaft for driving the pawl to rotate away from the corresponding ratchet.

[0015] Further, there are two power supply lines, locking assemblies, contacts and unlocking assemblies, the two levers are disposed oppositely, and threaded interfaces are formed on the opposite sides of the two levers.

[0016] The beneficial effects of the present utility model are embodied in:

[0017] In the utility model, the power supply line is threadedly installed in the thread groove on the shell, at which time the contact is in contact with the contact point. When the power supply line supplies power to the heater body, the heater body will immediately heat up. When the power supply line and the heater body need to be separated for maintenance or replacement, the locking component is first driven by the unlocking component to release the brake on the power supply line, and then the power supply line can be rotated in the thread groove to move the power supply line to the side away from the contact point until the power supply line is detached from the shell. At this time, the heater body can be replaced. This method of replacement is very convenient and quick, and when the locking component does not work in conjunction with the unlocking component, the locking component will stop the power supply line from rotating in the opposite direction in the thread groove and moving to the side away from the contact point, so that the power supply line and the wiring mechanism are installed very stably, solving the problem of troublesome loading and unloading between the cartridge heater and the power supply line and insufficient stability after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional view of the utility model;

[0019] Figure 2 It is a structural cross-sectional view of the wiring mechanism in the utility model;

[0020] Figure 3 For the utility model Figure 2 A partial view of A is shown.

[0021] In the figure:

[0022] 1. Heating tube; 2. Threaded column; 3. Wiring mechanism; 31. Shell; 32. Contact; 33. Ratchet; 34. Sealing cover; 35. Ratchet; 36. Lever; 37. Rotating shaft; 38. Threaded groove; 39. Threaded interface; 4. Connecting wire; 5. Insert block; 6. Sealing sheet; 7. Threaded rod; 8. Contact. DETAILED DESCRIPTION

[0023] 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. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 - 3The utility model discloses a cartridge heater, comprising a heater body and a power supply circuit. The heater body generates heat when connected to the power supply circuit and energized. A wiring mechanism 3 is provided on the heater body. The wiring mechanism 3 comprises a shell 31, a contact 32 installed in the shell 31, a threaded groove 38 opened in the shell 31 and located at the top of the contact 32, and a locking assembly rotatably installed on the shell 31. The contact 32 is electrically connected to the heater body.

[0025] In one embodiment, the power supply circuit is threadedly matched with the thread groove 38 so that the power supply circuit can approach and contact the contact 32. The locking component is used to rotate synchronously when the power supply circuit rotates in the thread groove 38 and approaches the contact 32, and the locking component is also used to prevent the power supply circuit from rotating in the opposite direction of the thread groove 38 and moving away from the contact 32. The device also includes an unlocking component, which is used to release the braking of the locking component on the power supply circuit.

[0026] In specific implementation, under normal circumstances, the power supply line is threadedly installed into the thread groove 38 on the shell 31. At this time, the contact 8 is in contact with the contact 32. When the power supply line supplies power to the heater body, the heater body will immediately heat up. When the power supply line and the heater body need to be separated for maintenance or replacement, the unlocking component is first used to drive the locking component to release the brake on the power supply line. Then the power supply line can be rotated in the thread groove 38 to move the power supply line to the side away from the contact 32 until the power supply line is detached from the shell 31. At this time, the heater body can be replaced. This method of replacement is very convenient and quick. Moreover, when the locking component does not work in conjunction with the unlocking component, the locking component will prevent the power supply line from rotating in the opposite direction in the thread groove 38 and moving to the side away from the contact 32, so that the power supply line and the wiring mechanism 3 are installed very stably, which solves the problem of inconvenient loading and unloading between the cartridge heater and the power supply line, and insufficient stability after installation.

[0027] In one embodiment, the heater body includes a heating tube 1 and a threaded column 2 installed at one end of the heating tube 1, and the shell 31 is installed at the end of the threaded column 2 away from the heating tube 1. The contact 32 is electrically connected to the heating tube 1. When in use, the heater body can be installed at a fixed point that needs to be heated through the threaded column 2, and the heating tube 1 can be powered on to heat the area that needs to be heated.

[0028] In one embodiment, the power supply circuit includes a connecting wire 4, a contact 8 installed at one end of the connecting wire 4 close to the contact 32, an insert block 5 installed on the connecting wire 4 and having a rectangular shape, and a threaded rod 7 installed on the connecting wire 4 and located between the insert block 5 and the contact 8. The connecting wire 4 is electrically connected to the contact 8, and the threaded rod 7 is threadedly matched with the thread groove 38.

[0029] With such a design, the staff can hold the top of the insertion block 5 and rotate it, causing the threaded rod 7 to rotate synchronously in the threaded groove 38 and move toward the side close to the contact 32 until the contact head 8 contacts the contact 32. Conversely, when the unlocking component drives the locking component to release the braking of the power supply line, the insertion block 5 can be rotated in the reverse direction, causing the threaded rod 7 to rotate synchronously in the threaded groove 38 and move away from the contact 32 until the entire power supply line leaves the housing 31.

[0030] In one embodiment, the locking component includes a ratchet wheel 33 rotatably mounted on the housing 31. A rectangular insertion hole that is in insertion fit with the insertion block 5 is provided at the center of the ratchet wheel 33. The ratchet wheel 33 is located at the top of the threaded groove 38, and the insertion hole communicates with the threaded groove 38. A ratchet pawl 35 that cooperates with the ratchet wheel 33 is also rotatably provided on the housing 31. The ratchet pawl 35 has a reset function, and the unlocking component is used to separate the ratchet pawl 35 from the ratchet wheel 33.

[0031] In specific implementation, when the power supply line needs to be installed on the housing 31, the threaded rod 7 approaches the threaded groove 38 and rotates and inserts into it. At this time, the insertion block 5 is inserted into the insertion hole on the ratchet wheel 33, and the ratchet wheel 33 rotates synchronously with the threaded rod 7 in one direction, while the ratchet pawl 35 does not resist the ratchet wheel 33 at this time, enabling the ratchet wheel 33 to rotate normally. When the ratchet wheel 33 needs to rotate in the other direction, the ratchet pawl 35 will abut against the ratchet wheel 33, thereby preventing the ratchet wheel 33 from rotating in the other direction. Therefore, when the unlocking component does not separate the ratchet pawl 35 from the ratchet wheel 33, the power supply line cannot leave the housing 31 to ensure the stability of its connection.

[0032] In one embodiment, the device further includes a sealing cover 34 provided on the top of the housing 31. The sealing cover 34 is in insertion fit with the top of the housing 31. The insertion block 5 penetrates the top wall of the sealing cover 34. When the insertion block 5 rotates, the sealing cover 34 does not rotate. A sealing piece 6 is installed on the insertion block 5, and the sealing piece 6 covers the part where the insertion block 5 penetrates the sealing cover 34 to seal this part.

[0033] In specific implementation, since the connection between the power supply line and the housing 31 is exposed and not sealed, this part needs to be sealed. During use, during the process of the insertion block 5 rotating and moving toward the side close to the contact 32, the sealing piece 6 will move synchronously, and the sealing piece 6 will drive the sealing cover 34 to approach the housing 31 and make the sealing cover 34 inserted into the housing 31. There is an opening (not shown in the figure) at the top wall of the sealing cover 34. The insertion block 5 penetrates the opening, and the sealing piece 6 is located directly above the opening, and the insertion block 5 is not connected to the corresponding opening of the sealing piece 6. Therefore, when the insertion block 5 rotates, the sealing cover 34 will not rotate synchronously. After the power supply line is completely installed on the housing 31, the sealing piece 6 will cover the corresponding opening of the sealing cover 34, thereby sealing between the entire sealing cover 34 and the housing 31 and effectively protecting the connection between the power supply line and the housing 31.

[0034] In one embodiment, the unlocking assembly includes a rotating shaft 37 installed at the rotation point of the pawl 35. The top end of the rotating shaft 37 can rotate through the top wall of the sealing cover 34 and cooperate with it in a dynamic seal. A lever 36 is installed at the top end of the rotating shaft 37 for driving the pawl 35 to rotate in a direction away from the corresponding ratchet wheel 33.

[0035] With this design, the staff can manually push the lever 36 to drive the pawl 35 to rotate synchronously and separate from the ratchet 33. After the ratchet 33 is separated from the pawl 35, it can rotate in different directions. When the lever 36 is released, the pawl 35 is reset to make it contact the ratchet 33 again.

[0036] In one embodiment, the power supply circuit, the locking assembly, the contact 32 and the unlocking assembly are all two, the two levers 36 are arranged opposite to each other, and the opposite sides of the two levers 36 are provided with threaded interfaces 39.

[0037] In specific implementation, the cartridge heater in the prior art usually has two corresponding contacts and cooperates with two circuits for power supply. Therefore, the power supply circuit and the contact 32 are both well-known technologies in the prior art. When the two levers 36 are not working, the threaded interfaces 39 thereon are in an aligned state. Therefore, the staff can first rotate one of the levers 36 to other directions, and then thread a screw into the threaded interface 39 on one of the levers 36. When the two levers 36 are installed to be aligned, the other end of the screw will not be blocked by the other lever 36. Then, one of the levers 36 is reset to align the screw with the threaded interface 39 on the other lever 36. At this time, it is only necessary to rotate the screw and extend it into the threaded interface 39 on the other lever 36. The screw locks the two levers 36, so that the ratchet 33 cannot rotate. The screw can be removed by reversing the above-mentioned operation.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0040] In addition, "a plurality of" means two or more.

[0041] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the scope of protection of the present utility model.

Claims

1. A barrel heater, characterized in that: Comprising, a heater body and a power supply line; a wiring mechanism (3) provided on the heater body, the wiring mechanism (3) comprising a housing (31), a contact (32) provided in the housing (31), a threaded groove (38) opened in the housing (31) and located at the top of the contact (32), and a locking assembly rotatably provided on the housing (31), the contact (32) being electrically connected to the heater body, and the power supply line being in threaded cooperation with the threaded groove (38) so that the power supply line can approach and contact the contact (32); the locking assembly is used for rotating synchronously when the power supply line rotates in the threaded groove (38) and approaches the contact (32), and is also used for preventing the power supply line from rotating reversely in the threaded groove (38) and moving away from the contact (32); an unlocking assembly for releasing the braking of the locking assembly on the power supply line.

2. The cartridge heater according to claim 1, wherein: The heater body includes a heating tube (1) and a threaded post (2) provided at one end of the heating tube (1), the housing (31) is provided at the end of the threaded post (2) away from the heating tube (1), and the contact (32) is electrically connected to the heating tube (1).

3. The cartridge heater according to claim 1, wherein: The power supply line includes a connecting wire (4), a contact head (8) provided at one end of the connecting wire (4) close to the contact (32), a plug (5) provided on the connecting wire (4) and having a rectangular outer shape, and a threaded rod (7) provided on the connecting wire (4) and located between the plug (5) and the contact head (8), the threaded rod (7) being in threaded cooperation with the threaded groove (38).

4. The barrel heater according to claim 3, characterized in that: The locking assembly includes a ratchet wheel (33) rotatably provided on the housing (31), a rectangular insertion hole in communication with the plug (5) is opened at the center of the ratchet wheel (33), the ratchet wheel (33) is located at the top of the threaded groove (38), and the insertion hole is in communication with the threaded groove (38), and a pawl (35) cooperating with the ratchet wheel (33) is also rotatably provided on the housing (31); the plug (5) is inserted into the insertion hole on the ratchet wheel (33), the plug (5) moves synchronously when the threaded rod (7) rotates, when the threaded rod (7) rotates in the threaded groove (38) and approaches the contact (32), the ratchet wheel (33) is driven to rotate synchronously in one direction, and when the ratchet wheel (33) rotates in the other direction, it is blocked by the pawl (35), and the unlocking assembly is used to separate the pawl (35) from the ratchet wheel (33).

5. The barrel heater according to claim 4, wherein: It further includes a sealing cover (34) provided on the top of the housing (31), the sealing cover (34) is in insertion fit with the top of the housing (31), the plug (5) penetrates through the top wall of the sealing cover (34), the sealing cover (34) does not rotate when the plug (5) rotates, a sealing piece (6) is provided on the plug (5), when the plug (5) rotates and moves towards the side close to the contact (32), the sealing piece (6) moves synchronously and drives the sealing cover (34) to approach the housing (31), and the sealing piece (6) covers the position where the plug (5) penetrates through the sealing cover (34) to seal this place.

6. The cartridge heater according to claim 5, characterized in that: The unlocking component includes a rotating shaft (37) disposed at the rotation position of the pawl (35). The top end of the rotating shaft (37) rotatably penetrates through the top wall of the sealing cover (34) and is in dynamic sealing cooperation therewith. A lever (36) is provided at the top end of the rotating shaft (37) for driving the pawl (35) to rotate away from the corresponding ratchet wheel (33).

7. The barrel heater according to claim 6, wherein: There are two power supply lines, locking components, contacts (32) and unlocking components. The two levers (36) are arranged oppositely, and threaded interfaces (39) are provided on the opposite sides of the two levers (36).

Images