Device for testing thermal time constant

Abstract

The utility model discloses a device for testing a thermal time constant, which comprises a base and a mounting assembly for mounting a thermistor, two first grooves for storing reagents with different temperatures are arranged at the upper end of the base at intervals, a water outlet pipe for draining water is arranged in each first groove, an electromagnetic valve is arranged at the position of each water outlet pipe, and the thermistor is arranged in each first groove. A first groove is formed in the base, a sealing assembly used for sealing the first groove is arranged in the first groove, a driving assembly is arranged on the base, the driving assembly is in transmission connection with the mounting assembly, and the driving assembly drives the mounting assembly to stretch into any one of the first grooves. According to the utility model, the thermal response time of the thermistor can be effectively measured, and a worker does not need to manually replace the temperature of the thermistor in the process of measuring the thermistor, so that the working intensity of the worker is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of thermistor testing, in particular to a device for testing a thermal time constant. Background Art

[0002] Thermistor is a sensor resistor whose resistance value changes with temperature. According to the temperature coefficient, it is divided into positive temperature coefficient thermistor and negative temperature coefficient thermistor. The thermal time constant is an important parameter of the thermistor, which indicates the time required for the thermistor to respond to changes in ambient temperature. The thermal time constant of existing thermistors needs to be tested before leaving the factory.

[0003] The existing thermal time constant test setup of thermistors often requires a worker to clamp the thermistor with a tool, then operate the tool to insert the thermistor into reagents of different temperatures to measure the thermal time constant of the thermistor. The entire workflow needs to be completed manually by the worker, which increases the worker's workload. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] In order to solve the technical problems existing in the background technology, the utility model proposes a device for testing the thermal time constant, which can effectively measure the thermal response time of the thermistor, and in the process of measuring the thermistor, there is no need for the staff to manually change the temperature of the thermistor, thereby effectively reducing the workload of the staff.

[0006] (II) Technical solution

[0007] The utility model provides a device for testing a thermal time constant, comprising a base and a mounting assembly for mounting a thermistor, wherein two first grooves for storing reagents of different temperatures are arranged at intervals on the upper end of the base, a water outlet pipe for draining water is arranged in the first groove, a solenoid valve is arranged at the water outlet pipe, a closing assembly for closing the first groove is arranged in the first groove, a driving assembly is arranged on the base, the driving assembly is in transmission connection with the mounting assembly, and the driving assembly drives the mounting assembly to extend into any one of the first grooves.

[0008] Preferably, the driving assembly includes a mounting disc, a mounting rod, a mounting plate and a connecting rod. The mounting disc is rotatably arranged on the base and located between the two first grooves. The mounting rod is coaxially connected to the upper end of the mounting disc. The mounting plate is horizontally arranged and connected to the upper end of the mounting rod. The connecting rod is vertically arranged on the mounting plate, and its bottom end passes through the mounting plate and is slidably connected thereto. The bottom end of the connecting rod is in transmission connection with the mounting assembly. A driving unit for driving the connecting rod to move in the up and down direction is provided on the mounting plate, and a rotating unit for driving the mounting disc to rotate is provided on the base.

[0009] Preferably, the driving unit includes a transmission plate and a first cylinder. The fixed end of the first cylinder is connected to the upper end of the mounting plate. The telescopic rod of the first cylinder is vertically upward. The transmission plate is horizontally arranged, one end of which is connected to the connecting rod and the other end is connected to the telescopic rod of the first cylinder.

[0010] Preferably, the rotating unit includes a motor and a rotating shaft. A second groove is provided at the upper end of the base. The second groove is located in the middle of the two first grooves and below the mounting disc. The motor is located in the second groove and connected to the base. One end of the rotating shaft is coaxially connected to the output shaft of the motor, and the other end of the rotating shaft is coaxially connected to the mounting disc.

[0011] Preferably, the mounting assembly includes a clamping frame, a mounting shaft, a limiting plate and a connecting plate. The clamping frame is connected to the bottom end of the connecting rod. The inner wall of the clamping frame is fitted with the outer end of the thermistor. Both the front and rear ends of the clamping frame are rotatably connected to two limiting plates through mounting shafts. The bottom ends of the two limiting plates are both below the clamping frame. The bottom ends of the two limiting plates are connected by a connecting plate. The ends of the two limiting plates close to each other are both in contact with the thermistor.

[0012] Preferably, the closing assembly includes a sealing cover, a connecting block and a second cylinder. A second groove communicating with the first groove is provided on the base. The sealing cover is slidably arranged in the second groove. The second cylinder is connected to the inner wall of the second groove through a fixing plate. The telescopic rod of the second cylinder is horizontally arranged and connected to the connecting block. The connecting block is connected to the sealing cover. The sealing cover can move to be in contact with the inner wall of the first groove to close the first groove.

[0013] Compared with the prior art, the above technical solution of the present utility model has the following beneficial technical effects:

[0014] In the present utility model: This device can effectively measure the thermal response time of the thermistor, and during the measurement of the thermistor, it is not necessary for the staff to manually change the temperature of the thermal resistor, thus effectively reducing the work intensity of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 FIG. is a schematic structural diagram of a device for testing the thermal time constant proposed by the present utility model.

[0016] Figure 2 FIG. is a schematic structural diagram of the second groove in a device for testing the thermal time constant proposed by the present utility model.

[0017] Figure 3 FIG. is a schematic enlarged partial structural diagram of part A in a device for testing the thermal time constant proposed by the present utility model.

[0018] Reference numerals: 1, base; 2, mounting plate; 3, mounting rod; 4, mounting plate; 5, connecting rod; 6, drive plate; 7, first cylinder; 8, clamping bracket; 9, mounting shaft; 10, limiting plate; 11, connecting plate; 12, sealing cover; 13, connecting block; 14, second cylinder; 15, fixing plate; 16, motor; 17, rotating shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply 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 construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the utility model, it should be noted that unless otherwise clearly defined and limited, terms such as "installation", "equipped with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, such as welding, riveting, bonding, etc., or a detachable connection, such as threaded connection, key connection, pin connection, etc., or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] As Figures 1 - 3 shown, a device for testing the thermal time constant proposed by the present utility model includes a base 1 and an installation component for installing a thermistor. Two first grooves for storing reagents at different temperatures are provided at intervals on the upper end of the base 1. A water outlet pipe for draining water is provided in the first groove, and a solenoid valve is provided at the water outlet pipe. A sealing component for closing the first groove is provided in the first groove. A driving component is provided on the base 1, and the driving component is in transmission connection with the installation component. The driving component drives the installation component to extend into any one of the first grooves.

[0023] In the present utility model, when the device needs to be used, the thermistor to be tested is installed through the installation component, and the sealing of the first groove for storing the reagent with a lower temperature by the sealing component is cancelled. The driving component drives the installation component into the first groove. After the temperature of the thermistor is the same as the temperature of the reagent, repeat the above operation, and the driving component sends the installation component into another first groove. It takes a certain amount of time for the temperature of the thermistor to be the same as the temperature of the reagent in the other first groove. This time is the lag time, that is, the thermal response time. The device can effectively measure the thermal response time of the thermistor, and during the measurement of the thermistor, there is no need for the staff to manually change the temperature of the thermal resistor, thus effectively reducing the working intensity of the staff.

[0024] In an alternative embodiment, the driving assembly includes a mounting disk 2, a mounting rod 3, a mounting plate 4, and a connecting rod 5. The mounting disk 2 is rotatably arranged on the base 1 and is located between the two first grooves. The mounting rod 3 is coaxially connected to the upper end of the mounting disk 2. The mounting plate 4 is horizontally arranged and connected to the upper end of the mounting rod 3. The connecting rod 5 is vertically arranged on the mounting plate 4, and its bottom end passes through the mounting plate 4 and is slidably connected thereto. The bottom end of the connecting rod 5 is in transmission connection with the mounting assembly. The mounting plate 4 is provided with a driving unit for driving the connecting rod 5 to move in the up and down directions. The base 1 is provided with a rotating unit for driving the mounting disk 2 to rotate. By means of the driving unit, the connecting rod 5 can be effectively driven to move up and down. When the connecting rod 5 moves up and down, it can effectively drive the mounting assembly connected thereto to move up and down. Thus, after the shielding of the first groove is removed, the connecting rod 5 can move downward into the first groove. Moreover, the device can drive the mounting disk 2 to rotate through the rotating unit. The rotation of the mounting disk 2 drives the mounting rod 3 and the mounting plate 4 connected thereto to rotate. The rotation of the mounting plate 4 drives the connecting rod 5 slidably arranged thereon to rotate, thereby driving the mounting assembly to rotate above another first groove. That is, the driving unit can drive the mounting assembly into different first grooves.

[0025] In an alternative embodiment, the driving unit includes a transmission plate 6 and a first cylinder 7. The fixed end of the first cylinder 7 is connected to the upper end of the mounting plate 4. The telescopic rod of the first cylinder 7 is arranged vertically upward. The transmission plate 6 is horizontally arranged, one end of which is connected to the connecting rod 5, and the other end of which is connected to the telescopic rod of the first cylinder 7. By driving the transmission plate 6 to move through the first cylinder 7, the movement of the transmission plate 6 can effectively drive the connecting rod 5 connected thereto to move, thereby driving the mounting assembly connected thereto to move.

[0026] In an alternative embodiment, the rotating unit includes a motor 16 and a rotating shaft 17. The upper end of the base 1 is provided with a second groove. The second groove is located between the two first grooves and is below the mounting disk 2. The motor 16 is located in the second groove and is connected to the base 1. One end of the rotating shaft 17 is coaxially connected to the output shaft of the motor 16, and the other end of the rotating shaft 17 is coaxially connected to the mounting disk 2. By driving the rotating shaft 17 to rotate through the motor 16, the rotation of the rotating shaft 17 drives the mounting disk 2 connected thereto to rotate, thereby driving the mounting rod 3, the mounting plate 4, and the connecting rod 5 thereon to rotate, and thus driving the thermistor to rotate.

[0027] In an alternative embodiment, the mounting assembly includes a clamping frame 8, a mounting shaft 9, a limiting plate 10, and a connecting plate 11. The clamping frame 8 is connected to the bottom end of the connecting rod 5. The inner wall of the clamping frame 8 is in close contact with the outer end of the thermistor. Both the front and rear ends of the clamping frame 8 are rotatably connected to two limiting plates 10 through the mounting shaft 9. The bottom ends of the two limiting plates 10 are both located below the clamping frame 8. The bottom ends of the two limiting plates 10 are connected by the connecting plate 11. One end of the two limiting plates 10 close to each other is in close contact with the thermistor. When the thermistor needs to be mounted, rotate the limiting plate 10. After rotating the limiting plate 10 so that it does not block the clamping frame 8, place the thermistor in the clamping frame 8, make the outer end of the thermistor in close contact with the inner wall of the clamping frame 8, and complete the preliminary positioning of the thermistor. Rotate the limiting plate 10 to the position of the clamping frame 8, and further complete the mounting of the thermistor through the close contact between one end of the two limiting plates 10 close to each other and the thermistor. The device can complete the mounting of the thermistor without tools, so it is very convenient to mount the thermistor, reducing the working intensity of the staff when disassembling the thermistor. Contact points for electrically connecting with the thermistor are provided on the inner wall of the clamping frame 8. The clamping frame 8 and the connecting rod 5 are hollow to leave a gap for wiring installation. One end of the connecting rod 5 is provided with a hole communicating with its internal space. One end of the wiring is connected to the contact point, and the other end extends out through the hole and is connected to the device for measuring the thermistor.

[0028] In an alternative embodiment, the closing assembly includes a sealing cover 12, a connecting block 13, and a second cylinder 14. A second groove communicating with the first groove is provided on the base 1. The sealing cover 12 is slidably disposed in the second groove. The second cylinder 14 is connected to the inner wall of the second groove through a fixing plate 15. The telescopic rod of the second cylinder 14 is horizontally disposed and connected to the connecting block 13. The connecting block 13 is connected to the sealing cover 12. The sealing cover 12 can move to be in close contact with the inner wall of the first groove to complete the closing of the first groove. The fixing plate 15 is located in the second groove and connected to its inner wall. A through hole is provided thereon. The second cylinder 14 passes through the through hole and is connected to the fixing plate 15. The second cylinder 14 can effectively drive the connecting block 13 to move. The movement of the connecting block 13 drives the sealing cover 12 connected thereto to move in the second groove to complete the closing of the first groove.

[0029] It should be understood that the above specific embodiments of the present utility model are only used for exemplary illustration or explanation of the principle of the present utility model, and do not constitute a limitation to the present utility model. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present utility model shall be included within the protection scope of the present utility model. In addition, the appended claims of the present utility model are intended to cover all variations and modifications that fall within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A device for testing the thermal time constant, characterized in that, The invention comprises a base (1) and a mounting assembly for mounting a thermistor, wherein the upper end of the base (1) is provided with two first grooves for storing reagents of different temperatures at intervals, a water outlet pipe for draining water is provided in the first groove, a solenoid valve is provided at the water outlet pipe, a closing assembly for closing the first groove is provided in the first groove, and a driving assembly is provided on the base (1), the driving assembly is in transmission connection with the mounting assembly, and the driving assembly drives the mounting assembly to extend into any one of the first grooves.

2. The device for testing the thermal time constant according to claim 1, wherein The driving assembly comprises a mounting disk (2), a mounting rod (3), a mounting plate (4) and a connecting rod (5); the mounting disk (2) is rotatably arranged on the base (1) and is located between the two first grooves; the mounting rod (3) is coaxially connected to the upper end of the mounting disk (2); the mounting plate (4) is horizontally arranged and connected to the upper end of the mounting rod (3); the connecting rod (5) is vertically arranged on the mounting plate (4), and its bottom end passes through the mounting plate (4) and is slidably connected thereto; the bottom end of the connecting rod (5) is transmission-connected to the mounting assembly; a driving unit for driving the connecting rod (5) to move in an up-and-down direction is provided on the mounting plate (4); and a rotating unit for driving the mounting disk (2) to rotate is provided on the base (1).

3. The device for testing the thermal time constant according to claim 2, characterized in that, The driving unit comprises a transmission plate (6) and a first cylinder (7), wherein a fixed end of the first cylinder (7) is connected to an upper end of the mounting plate (4), a telescopic rod of the first cylinder (7) is arranged vertically upward, and the transmission plate (6) is arranged horizontally, one end of which is connected to the connecting rod (5), and the other end of which is connected to the telescopic rod of the first cylinder (7).

4. The device for testing the thermal time constant according to claim 2, wherein The rotating unit comprises a motor (16) and a rotating shaft (17); a second groove is provided at the upper end of the base (1); the second groove is located between the two first grooves; the second groove is located below the mounting plate (2); the motor (16) is located in the second groove and is connected to the base (1); one end of the rotating shaft (17) is coaxially connected to an output shaft of the motor (16); and the other end of the rotating shaft (17) is coaxially connected to the mounting plate (2).

5. The device for testing the thermal time constant according to claim 2, wherein The mounting assembly comprises a clamping frame (8), a mounting shaft (9), a limiting plate (10) and a connecting plate (11); the clamping frame (8) is connected to the bottom end of the connecting rod (5); the inner wall of the clamping frame (8) is arranged to fit the outer end of the thermistor; the front and rear ends of the clamping frame (8) are rotatably connected to the two limiting plates (10) via the mounting shaft (9); the bottom ends of the two limiting plates (10) are located below the clamping frame (8); the bottom ends of the two limiting plates (10) are connected via the connecting plate (11); and the ends of the two limiting plates (10) that are close to each other fit the thermistor.

6. The device for testing the thermal time constant according to claim 1, characterized in that The closed component includes a sealing cover (12), a connecting block (13) and a second cylinder (14). A second groove communicating with the first groove is provided on the base (1). The sealing cover (12) is slidably arranged in the second groove. The second cylinder (14) is connected to the inner wall of the second groove through a fixing plate (15). The telescopic rod of the second cylinder (14) is horizontally arranged and connected to the connecting block (13). The connecting block (13) is connected to the sealing cover (12). The sealing cover (12) can move to fit with the inner wall of the first groove to complete the closing of the first groove.

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