Moisture meter junction box, moisture meter heating unit and moisture meter

Abstract

The utility model discloses a moisture meter junction box, a moisture meter heating unit and a moisture meter. The moisture meter junction box includes a box body, a mounting protrusion and a positioning pin. The box body includes a first plate body, a second plate body and a third plate body connected in one piece. The second plate body and the third plate body are respectively arranged on both sides of the first plate body, and the first plate body is provided with a first threaded hole and a second threaded hole. The mounting protrusion is arranged on the first plate body, and a mounting groove is arranged on the side of the mounting protrusion away from the first plate body. The positioning pin is arranged on the first plate body and is arranged close to the second threaded hole. The moisture meter junction box, the moisture meter heating unit and the moisture meter in the embodiments of the utility model realize the modularization and centralized installation of the moisture meter components through the second threaded hole, the mounting groove and the positioning pin arranged in the moisture meter junction box, thereby improving the installation efficiency and maintenance efficiency of the moisture meter.

Description

Technical Field

[0001] The utility model belongs to the technical field of moisture meters, and in particular relates to a moisture meter junction box, a moisture meter heating unit and a moisture meter. Background Art

[0002] A moisture meter, also known as a moisture analyzer, heats the sample through an internal heating unit to evaporate the water in the sample, and detects the moisture content of various organic and inorganic solid, liquid, gas and other samples. The existing moisture meter heating unit is generally installed on the cover of the moisture meter, and the junction box, heater, temperature sensor and other components of the heating unit are independently installed in various areas of the cover. It takes a lot of time to install and remove these components, which is extremely inconvenient.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0004] The utility model aims to provide a moisture meter junction box, which connects various components of the moisture meter through second threaded holes, mounting grooves and locating pins arranged inside the box, thereby realizing modular and centralized installation of the moisture meter components.

[0005] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a moisture meter junction box, including a box body, a mounting protrusion and a positioning pin. The box body includes a first plate body, a second plate body and a third plate body connected in one piece, the second plate body and the third plate body are respectively arranged on both sides of the first plate body, and the first plate body is provided with a first threaded hole and a second threaded hole, the first threaded hole is used for installing bolts to connect the box body to the moisture meter, and the second threaded hole is used to connect the first component of the moisture meter. The mounting protrusion is provided on the first plate body, and a mounting groove is provided on the side of the mounting protrusion away from the first plate body, and the mounting groove is used to connect the second component of the moisture meter. The positioning pin is provided on the first plate body and is arranged close to the second threaded hole, and the positioning pin is used to connect and position the first component of the moisture meter.

[0006] In one or more embodiments of the present invention, the mounting groove is formed by a recess of the end surface of the mounting protrusion away from the first plate body, and extends toward the second plate body.

[0007] In one or more embodiments of the present invention, third threaded holes are provided on both sides of the mounting groove.

[0008] In one or more embodiments of the present invention, the moisture meter junction box also includes a fourth plate body arranged between the second plate body and the third plate body and integrally connected, and at least one wire clamping groove is provided on the fourth plate body, and the wire clamping groove is formed by a recess on a side of the fourth plate body away from the first plate body.

[0009] In one or more embodiments of the present invention, a first avoidance opening penetrating through the second plate body is provided on the second plate body.

[0010] In one or more embodiments of the present invention, the second threaded hole, the mounting protrusion, the positioning pin and the first avoidance opening are arranged in a colinear manner.

[0011] On the other hand, the utility model also provides a moisture meter heating unit, including a shell, a cover, the above-mentioned moisture meter junction box, a heater, a first mounting member and a second mounting member. A receiving chamber is provided in the shell, one end of the receiving chamber is an open end, and limiting protrusions are provided on the cavity walls on both sides of the receiving chamber. The cover is installed in the receiving chamber, and the open side abuts against the side of the limiting protrusion away from the open end of the receiving chamber. The box body of the moisture meter junction box is installed in the receiving chamber and is located on the side of the cover, and a bolt is installed in the first threaded hole to fix the box body in the receiving chamber. The heater is partially located in the cover and partially located in the box. The first mounting member is installed in the cover and connected to the heater. The second mounting member is installed in the box and connected to the heater, and the second mounting member is provided with a first plug hole aligned with the second threaded hole and a positioning hole for the positioning pin to pass through, and bolts are installed in the second threaded hole and the first plug hole to fix the second mounting member on the first plate.

[0012] In one or more embodiments of the present invention, the second mounting member includes a first mounting portion and second mounting portions arranged on both sides of the first mounting portion, the first insertion hole and the positioning hole are arranged on the first mounting portion, and the second mounting portion clamps the heater from both sides of the heater.

[0013] In one or more embodiments of the present invention, the moisture meter heating unit also includes a temperature sensor and a third mounting member. The third mounting member is installed at one end of the mounting protrusion away from the first plate body, and is surrounded by the mounting groove to form a receiving hole. The temperature sensor is partially disposed in the receiving hole and partially extends into the cover body.

[0014] In one or more embodiments of the present invention, the moisture meter heating unit also includes a thermal protection device and a heat conductor. The second plate body is provided with a mounting hole that passes through the second plate body. The thermal protection device is fixed at the mounting hole by bolts. One end of the heat conductor is connected to the thermal protection device, and the other end extends into the cover body and is close to the heater in the cover body.

[0015] In one or more embodiments of the utility model, the cover body includes a heat insulation cover and a reflective cover installed in the heat insulation cover, the heat insulation cover abuts against the limiting protrusion, the side of the heat insulation cover close to the second plate body is open, and the side of the reflective cover close to the second plate body is provided with a second avoidance opening.

[0016] In another aspect, the utility model provides a moisture meter, comprising the moisture meter heating unit.

[0017] Compared with the prior art, the moisture meter junction box, moisture meter heating unit and moisture meter of the utility model realize modular and centralized installation of moisture meter components through the second threaded hole, mounting groove and locating pin provided in the moisture meter junction box, thereby improving the installation efficiency of the moisture meter and the subsequent maintenance efficiency.

[0018] In addition, the heater and other components of the moisture meter heating unit are modularly installed in the cover, which is convenient for installation and disassembly of the cover and its internal components during assembly and testing, saving testing time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only some implementations recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a three-dimensional structural diagram of a moisture meter junction box in one embodiment of the utility model;

[0021] Figure 2 It is a planar structural diagram of a moisture meter junction box in one embodiment of the utility model;

[0022] Figure 3 It is a planar structural diagram of a moisture meter junction box and a heater in one embodiment of the utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of a second mounting member in one embodiment of the utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of a third mounting member in one embodiment of the utility model;

[0025] Figure 6 It is a partial planar structural diagram of a moisture meter heating unit in one embodiment of the utility model;

[0026] Figure 7This is a planar structural diagram of a moisture meter heating unit in one embodiment of the utility model;

[0027] Figure 8 It is a cross-sectional structural diagram of a moisture meter heating unit in one embodiment of the present invention.

[0028] Description of main reference numerals: 1. Box body, 101. First plate body, 1011. First threaded hole, 1012. Second threaded hole, 1013. First threaded column, 1014. Second threaded column, 102. Second plate body, 1021. Mounting hole, 1022. First avoidance port, 103. Third plate body, 104. Fourth plate body, 1041. Wire clamping groove, 2. Mounting protrusion, 201. Mounting groove, 202. Third threaded hole, 3. Positioning pin, 4. Shell Body, 401, limiting protrusion, 5, heat insulation cover, 6, reflective cover, 601, second avoidance, 7, heater, 8, first mounting member, 9, second mounting member, 901, first mounting portion, 902, second mounting portion, 903, first jack, 904, positioning hole, 10, temperature sensor, 11, third mounting member, 1101, third mounting portion, 1102, fourth mounting portion, 1103, second jack, 12, thermal protection device, 13, heat conductive member. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the implementation of the present invention will be clearly and completely described below in conjunction with the drawings in the implementation of the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementations. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be understood that the terms "top", "bottom", "up", "down", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] Reference Figure 1 and Figure 2As shown, the moisture meter junction box in one embodiment of the utility model includes a box body 1, a mounting protrusion 2 and a positioning pin 3. The box body 1 includes a first plate body 101, a second plate body 102 and a third plate body 103 connected in one piece, the second plate body 102 and the third plate body 103 are respectively arranged on both sides of the first plate body 101, and the first plate body 101 is provided with a first threaded hole 1011 and a second threaded hole 1012, the first threaded hole 1011 is used to install a bolt to connect the box body 1 to the moisture meter, and the second threaded hole 1012 is used to connect the first component of the moisture meter. The mounting protrusion 2 is arranged on the first plate body 101, and the side of the mounting protrusion 2 away from the first plate body 101 is provided with a mounting groove 201, and the mounting groove 201 is used to connect the second component of the moisture meter. The positioning pin 3 is arranged on the first plate body 101 and is arranged close to the second threaded hole 1012, and the positioning pin 3 is used to connect with the first component of the moisture meter and assist the first component of the moisture meter to be positioned. The first component and the second component are two different components of the moisture meter heating unit. The components of the moisture meter heating unit include but are not limited to a heater and a sensor.

[0032] According to the above structural design, in addition to accommodating the wiring harness of the moisture meter heating unit, the moisture meter junction box is also provided with a variety of mounting structures for connecting the moisture meter components, such as a second threaded hole 1012, a mounting groove 201 and a locating pin 3, in its box body 1. Therefore, the various components of the moisture meter can be modularly installed in the box body 1, thereby improving the installation efficiency of the moisture meter.

[0033] Moreover, during the subsequent repair and replacement of the components of the moisture meter, the damaged components can be removed individually, or the moisture meter junction box and the damaged components can be removed as a whole to avoid the scattered distribution of the components after they are removed, thereby improving the maintenance efficiency of the moisture meter.

[0034] In one embodiment, reference Figure 1 As shown, the mounting groove 201 is formed by the end surface of the mounting protrusion 2 being recessed away from the first plate body 101. In addition, in order to facilitate the installation of components of the moisture meter perpendicular to the mounting protrusion 2, one side of the mounting groove 201 extends toward the second plate body 102.

[0035] Furthermore, in order to facilitate the use of parts such as fixing blocks and fixing plates to fix the moisture meter components in the installation groove 201, third threaded holes 202 are provided on both sides of the installation groove 201, and the third threaded holes 202 are used to install bolts that cooperate with parts such as fixing blocks and fixing plates.

[0036] In one embodiment, reference Figure 1As shown, the moisture meter junction box also includes a fourth plate body 104 that is disposed between the second plate body 102 and the third plate body 103 and is integrally connected. The fourth plate body 104 is provided with at least one wire clamping groove 1041, which is formed by being recessed from the side of the fourth plate body 104 away from the first plate body 101. The wire clamping groove 1041 is used to fix the wire harness connected to the components of the moisture meter, so as to facilitate the arrangement of the wire harness and avoid the wire harness being randomly distributed and entangled. In addition, since the moisture meter junction box is generally made of high temperature resistant materials, all the high-voltage wire harnesses can also be fixed in the box body 1, thereby improving the safety of the moisture meter.

[0037] When the moisture meter component in the mounting groove 201 is perpendicular to the mounting protrusion 2, the moisture meter component needs to be led out of the box body 1. In order to prevent the box body 1 from blocking the moisture meter component, the second plate body 102 is provided with a first avoidance opening 1022 that passes through the second plate body 102 to allow the moisture meter component to pass through the second plate body 102 and extend outside the box body 1.

[0038] Reference Figure 1 and Figure 2 As shown, considering that the moisture meter components connected to the box body 1 are arranged in the same line from top to bottom, the second threaded hole 1012, the mounting protrusion 2, the positioning pin 3 and the first avoidance opening 1022 are arranged along the same straight line.

[0039] The relative position relationship between the second threaded hole 1012, the mounting protrusion 2 and the positioning pin 3 can be selected according to actual needs. Preferably, the second threaded hole 1012 is arranged close to the first avoidance opening 1022, the mounting protrusion 2 is arranged away from the first avoidance opening 1022, and the positioning pin 3 is arranged between the second threaded hole 1012 and the mounting protrusion 2.

[0040] In one embodiment, in order to improve the connection strength and stability between the first threaded hole 1011 and the second threaded hole 1012 and the bolt, the lengths of the first threaded hole 1011 and the second threaded hole 1012 may be appropriately increased. Figure 1 and Figure 2 As shown, a first threaded column 1013 and a second threaded column 1014 are provided on the first plate body 101, and the first threaded column 1013 and the second threaded column 1014 protrude from the first plate body 101, and the first threaded hole 1011 is arranged along the axial direction of the first threaded column 1013, and the second threaded hole 1012 is arranged along the axial direction of the second threaded column 1014, thereby providing the first threaded hole 1011 and the second threaded hole 1012 with a larger extension length.

[0041] Reference Figures 3 to 8As shown, another embodiment of the utility model further provides a moisture meter heating unit, including a shell 4, a cover body, the above-mentioned moisture meter junction box, a heater 7, a first mounting member 8 and a second mounting member 9. A receiving cavity is provided in the shell 4, one end of the receiving cavity is an open end, and limiting protrusions 401 are provided on the cavity walls on both sides of the receiving cavity. The cover body is installed in the receiving cavity, and the open side abuts against the side of the limiting protrusion 401 away from the open end of the receiving cavity. The box body 1 of the above-mentioned moisture meter junction box is installed in the receiving cavity and is located beside the cover body. The heater 7 is partially located in the cover body and partially located in the box body 1. The heater 7 can be an infrared resistance wire heater, a halogen lamp or other components with heating function. The first mounting member 8 is installed in the cover body and connected to the heater 7. The second mounting member 9 is installed in the box body 1 and connected to the heater 7. The second mounting member 9 is provided with a first insertion hole 903 aligned with the second threaded hole 1012 and a positioning hole 904 for the positioning pin 3 to pass through. Bolts are installed in the second threaded hole 1012 and the first insertion hole 903 to fix the second mounting member 9 in the box body 1.

[0042] According to the above structural design, the heater 7 and other components of the moisture meter are modularly installed in the cover body, and the cover body and the components installed inside can be regarded as an integral component. After the integral component is assembled, it is first installed in the housing 4 as a whole, and the integral component is temporarily fixed by the limiting protrusion 401 without the need for fixing by bolts or other fixing methods, and then the integral component can be tested.

[0043] If the test result is normal, the whole assembly can be stably fixed in the housing 4 by bolts or other fixing methods. If the test result is abnormal, the whole assembly can be directly taken out of the housing 4 to avoid repeated disassembly of bolts, saving testing and disassembly time.

[0044] In addition, when it is necessary to repair or replace individual components of the moisture meter heating unit, the individual components can be removed or the entire assembly can be removed as a whole according to the actual situation. After repairing and replacing the components, when the entire assembly is installed into the housing 4 again, the entire assembly can still be temporarily fixed and tested by the limiting protrusion 401. If the test result is abnormal, the entire assembly can be directly taken out of the housing 4, and the individual components can be repaired and replaced again, saving the testing and disassembly time.

[0045] In one embodiment, reference Figure 3 and Figure 4 As shown, the second mounting member 9 includes a first mounting portion 901 and a second mounting portion 902 arranged on both sides of the first mounting portion 901. The first mounting portion 901 and the second mounting portion 902 can be set as a plate-like structure, the first plug hole 903 and the positioning hole 904 are arranged on the first mounting portion 901, and the second mounting portion 902 clamps the heater 7 from both sides of the heater 7.

[0046] In one embodiment, reference Figure 3 , Figure 5 and Figure 6 As shown, the moisture meter heating unit also includes a temperature sensor 10 and a third mounting member 11. The third mounting member 11 is arranged at one end of the mounting protrusion 2 away from the first plate body 101, and is provided with a second plug hole 1103 for aligning with the third threaded hole 202. Bolts are installed in the third threaded hole 202 and the second plug hole 1103, thereby fixing the third mounting member 11 on the mounting protrusion 2. The third mounting member 11 and the mounting groove 201 are arranged to form a receiving hole. The temperature sensor 10 is partially arranged in the receiving hole and partially extends into the cover body.

[0047] Further, the third mounting member 11 may be composed of a third mounting portion 1101 and fourth mounting portions 1102 disposed on both sides of the third mounting portion 1101, and the third mounting portion 1101 and the fourth mounting portion 1102 are configured as plate-like structures. The second plug holes 1103 are disposed on the fourth mounting portions 1102 on both sides, and the third mounting portion 1101 wraps and presses against a portion of the temperature sensor 10 in the mounting groove 201 to limit the temperature sensor 10 from being separated from the mounting groove 201.

[0048] Further, see Figure 3 and Figure 6 As shown, the moisture meter heating unit also includes a thermal protection device 12 and a heat conductor 13. The second plate body 102 is provided with a mounting hole 1021 that penetrates the second plate body 102. The thermal protection device 12 is arranged toward the mounting hole 1021 and is fixed at the mounting hole 1021 by bolts. One end of the heat conductor 13 is connected to the thermal protection device 12, and the other end extends into the cover body and is close to the heater 7 in the cover body.

[0049] The heat conductor 13 is used to receive the heat generated by the heater 7 and transfer the heat to the thermal protection device 12. After receiving the heat, the thermal protection device 12 determines whether the temperature around the heater 7 reaches a set threshold. If it has reached the threshold, the power supply circuit of the heater 7 is disconnected to prevent the temperature around the heater 7 from being too high and causing damage to the moisture meter.

[0050] The heat conducting member 13 is a copper plate-shaped structure, which includes a first heat conducting plate, a second heat conducting plate and a third heat conducting plate which are connected in sequence, wherein the first heat conducting plate is clamped between the thermal protection device 12 and the second plate body 102, and the second heat conducting plate extends into the cover body and is close to the heater 7. Preferably, the third heat conducting plate is constructed in an arc shape and is close to the heater 7, so as to receive the heat generated by the heater 7.

[0051] In one embodiment, the cover body includes a heat insulation cover 5 and a reflective cover 6 installed in the heat insulation cover 5 . The reflective cover 6 can be connected to the heat insulation cover 5 by bolts, and the heat insulation cover 5 abuts against the limiting protrusion 401 .

[0052] Furthermore, when the heater 7 and the temperature sensor 10 are led out of the box body 1 from the first avoidance opening 1022 on the second plate body 102, in order to facilitate the heater 7 and the temperature sensor 10 to extend into the reflective cover 6, the side of the heat insulation cover 5 close to the second plate body 102 is open, and the side of the reflective cover 6 close to the second plate body 102 is provided with a second avoidance opening 601 for the heater 7 and the temperature sensor 10 to pass through, so as to prevent the heat insulation cover 5 and the reflective cover 6 from blocking the heater 7 and the temperature sensor 10.

[0053] Another embodiment of the present invention further provides a moisture meter, comprising the moisture meter heating unit and other necessary components for realizing moisture detection.

[0054] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0055] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A moisture meter junction box, characterized in that: include: A box body (1) comprises a first plate body (101), a second plate body (102) and a third plate body (103) which are integrally connected, the second plate body (102) and the third plate body (103) being respectively arranged on two sides of the first plate body (101), the first plate body (101) being provided with a first threaded hole (1011) and a second threaded hole (1012), the first threaded hole (1011) being used for installing a bolt to connect the box body (1) to the moisture meter, and the second threaded hole (1012) being used for connecting a first component of the moisture meter; A mounting protrusion (2) is provided on the first plate body (101), a side of the mounting protrusion (2) away from the first plate body (101) is provided with a mounting groove (201), and the mounting groove (201) is used to connect a second component of the moisture meter; A positioning pin (3) is arranged on the first plate body (101) and is arranged close to the second threaded hole (1012), and the positioning pin (3) is used to connect and position the first component of the moisture meter.

2. The moisture meter junction box according to claim 1, characterized in that: The mounting groove (201) is formed by a recessed end surface of the mounting protrusion (2) away from the first plate body (101), and extends toward the second plate body (102).

3. The moisture meter junction box according to claim 2, characterized in that: Third threaded holes (202) are provided on both sides of the installation groove (201).

4. The moisture meter junction box according to claim 1, characterized in that: The moisture meter wiring box also includes a fourth plate body (104) arranged between the second plate body (102) and the third plate body (103) and connected integrally therewith, and at least one wire clamping groove (1041) is provided on the fourth plate body (104), and the wire clamping groove (1041) is formed by being recessed from a side of the fourth plate body (104) away from the first plate body (101).

5. The moisture meter junction box according to claim 1, characterized in that: The second plate body (102) is provided with a first avoidance opening (1022) penetrating the second plate body (102).

6. The moisture meter junction box according to claim 5, characterized in that: The second threaded hole (1012), the mounting protrusion (2), the positioning pin (3) and the first avoidance opening (1022) are arranged colinearly.

7. A moisture meter heating unit, characterized in that: include: A housing (4) is provided with a receiving cavity, one end of the receiving cavity is an open end, and cavity walls on both sides of the receiving cavity are provided with limiting protrusions (401); A cover body is installed in the receiving cavity, and an opening side thereof abuts against a side of the limiting protrusion (401) away from the opening end of the receiving cavity; The moisture meter junction box according to any one of claims 1 to 6, wherein the box body (1) is installed in the receiving cavity and is located beside the cover body, and a bolt is installed in the first threaded hole (1011) to fix the box body (1) in the receiving cavity; A heater (7), partly located in the cover and partly located in the box body (1); A first mounting member (8) is mounted in the housing and connected to the heater (7); A second mounting member (9) is installed in the box body (1) and connected to the heater (7); the second mounting member (9) is provided with a first insertion hole (903) aligned with the second threaded hole (1012) and a positioning hole (904) for the positioning pin (3) to pass through; bolts are installed in the second threaded hole (1012) and the first insertion hole (903), thereby fixing the second mounting member (9) on the first plate body (101).

8. The moisture meter heating unit according to claim 7, characterized in that: The second mounting member (9) comprises a first mounting portion (901) and second mounting portions (902) arranged on both sides of the first mounting portion (901); the first insertion hole (903) and the positioning hole (904) are arranged on the first mounting portion (901); and the second mounting portion (902) clamps the heater (7) from both sides of the heater (7).

9. The moisture meter heating unit according to claim 7, characterized in that: The moisture meter heating unit also includes a temperature sensor (10) and a third mounting member (11). The third mounting member (11) is mounted on an end of the mounting protrusion (2) away from the first plate (101) and is arranged together with the mounting groove (201) to form a receiving hole. The temperature sensor (10) is partially arranged in the receiving hole and partially extends into the cover.

10. The moisture meter heating unit according to claim 7, characterized in that: The moisture meter heating unit also includes a thermal protection device (12) and a heat conductor (13); the second plate (102) is provided with a mounting hole (1021) penetrating the second plate (102); the thermal protection device (12) is fixed to the mounting hole (1021) by means of bolts; one end of the heat conductor (13) is connected to the thermal protection device (12), and the other end extends into the cover and is close to the heater (7) in the cover.

11. The moisture meter heating unit according to claim 7, characterized in that: The cover body comprises a heat insulation cover (5) and a reflective cover (6) installed inside the heat insulation cover (5); the heat insulation cover (5) abuts against the limiting protrusion (401); a side of the heat insulation cover (5) close to the second plate body (102) is open; and a side of the reflective cover (6) close to the second plate body (102) is provided with a second avoidance opening (601).

12. A moisture meter, characterized in that: It comprises the moisture meter heating unit as claimed in any one of claims 7 to 11.

Images