Sealed temperature controller

Abstract

The utility model discloses a sealed temperature controller, which comprises a temperature controller body, a box seat, a box cover and a first cable, the temperature controller body comprises a single chip microcomputer, a shell and wiring terminals, the single chip microcomputer is packaged in the shell, the shell is externally connected with a plurality of wiring terminals electrically connected with the single chip microcomputer, and the first cable is connected with the single chip microcomputer. The first cable comprises a plurality of wires capable of being connected with the corresponding wiring terminals respectively, the box base comprises a box base body and a first threading pipe, the diameter of a pipe opening of the first threading pipe is matched with the diameter of the first cable, and an installation groove for installing and containing the temperature controller body is formed in the middle of the top face of the box base body. The first threading pipe is connected to the box base body and communicates with the mounting groove, and the bottom face of the periphery of the box cover can be fixed to the periphery of the top face of the box base body in an attached mode. Therefore, the wiring terminals which can generate electric sparks on the temperature controller body are separated from flammable and explosive gas or dust in the using environment, and the explosion-proof type of the temperature controller is effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to temperature controller technical field especially relates to a sealed temperature controller. BACKGROUND

[0002] The temperature controller is the switch that integrated programmer and software realize intelligent control temperature, in the prior art, it is through encapsulating singlechip in the shell, the terminal that is electrically connected with singlechip is exposed outside the shell, temperature sensor, power, solid state relay, contactor etc. are electrically connected with singlechip through the terminal, but when the temperature controller is applied in the oil field, gas field, chemical industry etc. environment containing flammable and explosive gas or dust, since the terminal can discharge, then there is the risk of causing explosion. SUMMARY

[0003] To solve the technical problems in the background art, the utility model provides a sealed temperature controller.

[0004] The sealed temperature controller, including: temperature controller body, box seat, box cover, first cable, temperature controller body includes singlechip, shell, terminal, singlechip is encapsulated in the shell, a plurality of terminals that are electrically connected with singlechip are connected on the outside of the shell, the first cable includes a plurality of wires that can be connected with corresponding terminals respectively, the box seat includes a box seat body and a first threading pipe with a diameter matching that of the first cable, the middle part of the top surface of the box seat body has a mounting groove for mounting the temperature controller body, the first threading pipe is connected to the box seat body and communicates with the mounting groove, and the peripheral bottom surface of the box cover can be fixed to the peripheral top surface of the box seat body.

[0005] Preferably, the sealed temperature controller further comprises a first silica gel plug of a hollow structure sleeved on the first cable, the diameter of the pipe opening of the first threading pipe is slightly larger than that of the first cable, the first threading pipe has an internal thread at a first wire inlet away from the box seat body, the peripheral surface of the first silica gel plug has an external thread engaged with the internal thread at the first wire inlet, and the first silica gel plug can be squeezed and screwed between the first cable and the first wire inlet.

[0006] Preferably, the sealed temperature controller further comprises a sealing gasket attached to the peripheral top surface of the box seat body.

[0007] Further preferably, the peripheral top surface of the box seat body has a sealing gasket placement groove matching the sealing gasket.

[0008] Preferably, the first threading pipe and the terminal are at the same height.

[0009] Preferably, the sealed temperature controller further comprises a conductive grounding bolt and a grounding wire, the grounding bolt is screwed to the box seat body, and the end of the grounding bolt is located in the mounting groove, and the grounding wire is press-fitted to the outer wall of the box seat body by the grounding bolt.

[0010] Preferably, the sealed temperature controller further includes a second cable and a second conduit. The first cable includes multiple input wires, which are wires connected to terminals electrically connected to the input end of the microcontroller. The second cable includes multiple output wires, which are wires connected to terminals electrically connected to the output end of the microcontroller. The second conduit is connected to the housing body and communicates with the mounting groove. The diameter of the conduit opening is adapted to the diameter of the second cable.

[0011] Preferably, the sealed thermostat further includes a hollow second silicone plug fitted onto the second cable, the diameter of the second conduit is slightly larger than the diameter of the second cable, the second conduit has an internal thread at the second inlet far from the housing body, the outer circumferential surface of the second silicone plug has an external thread that meshes with the internal thread at the second inlet, and the second silicone plug can be squeezed and screwed between the second cable and the second inlet.

[0012] Preferably, the lid and the base body are connected by bolts so that the bottom outer surface of the lid fits against the top outer surface of the base body.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] By encapsulating the thermostat body within a housing and cover, the terminals on the thermostat body that may generate electrical sparks are isolated from flammable and explosive gases or dust in the operating environment, thus effectively ensuring the explosion-proof nature of the thermostat.

[0015] The first silicone plug, which is screwed between the first cable and the first inlet, and the second silicone plug, which is screwed between the second cable and the second inlet, can respectively ensure the sealing of the first inlet and the second inlet, thereby ensuring the explosion-proof performance of the sealed temperature controller.

[0016] The sealing gasket applied to the outer perimeter of the top surface of the box base can improve the sealing between the box base and the bottom surface of the box cover, further enhancing the explosion-proof performance of the thermostat.

[0017] The grounding bolt and grounding wire connected to the housing body can introduce the current generated by the terminal block into the ground, thereby further enhancing the explosion-proof performance of the thermostat. Attached Figure Description

[0018] Figure 1 This is a top view of the thermostat body, housing, first cable, first conduit, second cable, and second conduit.

[0019] Figure 2 This is a front view of the thermostat body, housing, first cable, first conduit, second cable, and second conduit.

[0020] Figure 3 This is a top view of the box lid.

[0021] Figure 4 This is a schematic diagram of the overall structure of a sealed temperature controller. Detailed Implementation

[0022] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0023] Reference Figure 1 , Figure 2 A sealed thermostat includes: a thermostat body, a housing 1, a cover 2, and a first cable 3. The thermostat body includes a microcontroller, a housing 4, and terminals 5. The microcontroller is encapsulated in the housing 4. Multiple terminals 5 connected to the outside of the housing 4 are electrically connected to the microcontroller. The first cable 3 includes multiple wires 31 that can be connected to the corresponding terminals 5. The housing 1 includes a housing body 11 and a first conduit 12 with a diameter matching the diameter of the first cable 3. The middle part of the top surface of the housing body 11 has a mounting groove 111 for accommodating the thermostat body. The first conduit 12 is connected to the housing body 11 and communicates with the mounting groove 111. The bottom outer surface of the cover 2 can be fitted and fixed to the outer outer surface of the top surface of the housing body 11.

[0024] By encapsulating the thermostat body in the housing body 11 and the cover 2, the wiring terminals 5 on the thermostat body that may generate electric sparks are isolated from flammable and explosive gases or dust in the operating environment, thereby effectively ensuring the explosion-proof nature of the thermostat.

[0025] Reference Figure 1 , Figure 2 The sealed thermostat also includes a hollow structure first silicone plug 6 fitted onto the first cable 3. The diameter of the opening of the first conduit 12 is slightly larger than the diameter of the first cable 3. The first conduit 12 has an internal thread at the first inlet far from the housing body 11. The outer circumferential surface of the first silicone plug 6 has an external thread that meshes with the internal thread at the first inlet. The first silicone plug 6 can be squeezed and screwed between the first cable 3 and the first inlet. The first silicone plug 6 can improve the sealing at the first inlet, thereby enhancing the explosion-proof performance of the thermostat.

[0026] Reference Figure 1 , Figure 2 , Figure 4 The sealed thermostat also includes a sealing gasket 16, which is applied to the outer periphery of the top surface of the housing body 11. The sealing gasket 16 can improve the sealing between the housing body 11 and the bottom surface of the cover 2, and further enhance the explosion-proof performance of the thermostat.

[0027] Reference Figure 1 , Figure 2The outer periphery of the top surface of the housing body 11 has a gasket placement groove 112 that is adapted to the gasket, so as to better position and fix the gasket 16.

[0028] Reference Figure 2 The first conduit 12 and the terminal 5 are located at the same height to keep the first cable 3 in a straight line as much as possible and reduce its deformation. On the one hand, this can reduce the possibility of a gap between the inlet of the first conduit 12 and the outer circumference of the first cable 3 caused by the deformation of the first cable 3. On the other hand, it can also protect the first cable 3.

[0029] Reference Figure 1 , Figure 2 , Figure 4 The sealed thermostat also includes a conductive grounding bolt 7 and a grounding wire 8. The grounding bolt 7 is screwed onto the housing body 11 and the end of the grounding bolt 7 is located in the mounting groove 111. The grounding wire 8 is pressed onto the outer wall of the housing body 11 by the grounding bolt 7. The grounding bolt 7 and the grounding wire 8 can introduce the current generated by the terminal 5 into the ground, thereby further enhancing the explosion-proof performance of the thermostat.

[0030] Reference Figure 1 , Figure 2 The sealed temperature controller also includes a second cable 9 and a second conduit 10. The first cable 3 includes multiple input wires 31, which are wires 31 connected to the terminal 5 that is electrically connected to the input end of the microcontroller. The second cable 9 includes multiple output wires, which are wires 91 that are electrically connected to the terminal 5 that is electrically connected to the output end of the microcontroller. The second conduit 10 is connected to the housing body 11 and communicates with the mounting groove 111. The diameter of the pipe opening of the second conduit 10 is adapted to the diameter of the second cable 9 to facilitate the marking and identification of different wires. In a specific embodiment, the wires of the temperature sensor, the power supply wires, etc. can be bundled in the first cable 3, and the solid-state relay wires or contactor wires that are electrically connected to the heating tube can be bundled in the second cable 9.

[0031] Reference Figure 1 , Figure 2 The sealed thermostat also includes a hollow structure second silicone plug 15 fitted onto the second cable 9. The diameter of the opening of the second conduit 13 is slightly larger than the diameter of the second cable 9. The second conduit 13 has an internal thread at the second inlet far from the housing body 11. The outer circumferential surface of the second silicone plug 15 has an external thread that meshes with the internal thread at the second inlet. The second silicone plug 15 can be squeezed and screwed between the second cable 9 and the second inlet. The second silicone plug 15 can improve the sealing at the second inlet, thereby enhancing the explosion-proof performance of the thermostat.

[0032] Reference Figures 1 to 4The bottom outer surface of the cover 2 is attached to the outer outer surface of the top surface of the fixed box body 11. A threaded blind hole 113 is opened on the outer outer surface of the top surface of the box body 11, and a through hole 21 is opened at the corresponding position on the outer outer surface of the bottom surface of the cover 2. The bolt 14 is screwed into the threaded blind hole 113 through the through hole 21 to connect the cover 2 and the box body 11. The above-mentioned detachable connection method can facilitate maintenance and inspection of the sealed thermostat.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sealed temperature controller, characterized in that, The device includes: a thermostat body, a housing (1), a cover (2), and a first cable (3). The thermostat body includes a microcontroller, a housing (4), and terminals (5). The microcontroller is encapsulated in the housing (4). Multiple terminals (5) that are electrically connected to the microcontroller are connected to the outside of the housing (4). The first cable (3) includes multiple wires (31) that can be connected to the corresponding terminals (5). The housing (1) includes a housing body (11) and a first conduit (12) whose diameter is adapted to the diameter of the first cable (3). The middle part of the top surface of the housing body (11) has a mounting groove (111) for installing and accommodating the thermostat body. The first conduit (12) is connected to the housing body (11) and communicates with the mounting groove (111). The bottom surface of the cover (2) can be attached and fixed to the outer periphery of the top surface of the housing body (11).

2. The sealed temperature controller according to claim 1, characterized in that, It also includes a hollow structure first silicone plug (6) fitted on the first cable (3), the diameter of the first conduit (12) is slightly larger than the diameter of the first cable (3), the first conduit (12) has an internal thread at the first inlet far from the housing body (11), the outer circumferential surface of the first silicone plug (6) has an external thread that meshes with the internal thread at the first inlet, and the first silicone plug (6) can be squeezed and screwed into the first cable (3) and the first inlet.

3. The sealed temperature controller according to claim 1, characterized in that, It also includes a sealing gasket (16), which is applied to the outer periphery of the top surface of the housing body (11).

4. The sealed temperature controller according to claim 3, characterized in that, The outer periphery of the top surface of the housing body (11) has a sealing gasket placement groove (112) that is adapted to the sealing gasket (16).

5. The sealed temperature controller according to claim 1, characterized in that, The first conduit (12) and the terminal block (5) are at the same height.

6. The sealed temperature controller according to claim 1, characterized in that, It also includes a conductive grounding bolt (7) and a grounding wire (8). The grounding bolt (7) is screwed onto the housing body (11) and the end of the grounding bolt (7) is located in the mounting groove (111). The grounding wire (8) is pressed onto the outer wall of the housing body (11) by the grounding bolt (7).

7. The sealed temperature controller according to claim 1, characterized in that, It also includes a second cable (9) and a second conduit (13). The first cable (3) includes multiple input wires (31), which are wires (31) connected to the terminal (5) that is electrically connected to the input end of the microcontroller. The second cable (9) includes multiple output wires, which are wires (91) connected to the terminal (5) that is electrically connected to the output end of the microcontroller. The second conduit (13) is connected to the housing body (11) and communicates with the mounting groove (111). The diameter of the pipe opening of the second conduit (13) is adapted to the diameter of the second cable (9).

8. The sealed temperature controller according to claim 7, characterized in that, It also includes a hollow structure second silicone plug (15) fitted on the second cable (9), the diameter of the second conduit (13) is slightly larger than the diameter of the second cable (9), the second conduit (13) has an internal thread at the second inlet far from the housing body (11), the outer circumferential surface of the second silicone plug (15) has an external thread that meshes with the internal thread at the second inlet, and the second silicone plug (15) can be squeezed and screwed into the second cable (9) and the second inlet.

9. The sealed temperature controller according to claim 1, characterized in that, The lid (2) and the body (11) are connected by bolts (14) so ​​that the bottom surface of the lid (2) fits against the top surface of the body (11).

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