Air bath thermostatic bath for temperature calibration

Abstract

The utility model relates to the technical field of calibration equipment, and particularly discloses an air bath thermostatic bath for temperature calibration. The device comprises a working cavity and a heat exchanger, the outer side of the working cavity communicates with a pipeline, the heat exchanger is arranged in the pipeline, an air circulation assembly enabling air to circularly flow is arranged in the pipeline, a temperature equalizing block is slidably connected into the working cavity in the vertical direction, and a first through hole allowing a temperature sensor to penetrate through is formed in the top of the working cavity; a groove is formed in the temperature equalizing block, and the temperature sensor penetrates through the first through hole in the vertical direction and is inserted into the groove; the heat exchanger heats air in the working cavity and the pipeline, the circulation assembly enables air convection to improve the temperature stability of the temperature equalizing block, the temperature sensor is inserted into the temperature equalizing block through the heat preservation flange, the temperature equalizing block can slide in a reciprocating mode in the vertical direction, the temperature equalizing block can adapt to different temperature sensors, and the temperature equalizing block is limited through the heat preservation flange. And the temperature calibration accuracy and the use safety of the temperature sensor are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to calibration equipment technical field, especially, it relates to a kind of air bath constant-temperature tank for temperature calibration. BACKGROUND

[0002] Temperature sensor is widely used in various industries, with the aging of components and equipment and other reasons, the precision of temperature sensor can reduce, therefore, calibrating temperature sensor is important step to ensure its measurement precision and accuracy.

[0003] In the process of high temperature temperature sensor verification calibration, usually use heat pipe constant-temperature tank, salt tank or oil tank, wherein, heat pipe constant-temperature tank working cavity environment is susceptible to external interference, leading to temperature uniformity index difference;Salt tank slow heating, medium is easy to be contaminated, and flammable and explosive;Oil tank slow cooling, 200 ℃ above oil smoke and its smoke is harmful to human body. UTILITY MODEL CONTENTS

[0004] In order to overcome the deficiencies of prior art, the utility model aims at providing a kind of air bath constant-temperature tank for temperature calibration, to improve the precision of temperature sensor temperature calibration and the security of use.

[0005] The utility model employs the technical scheme that:

[0006] A kind of air bath constant-temperature tank for temperature calibration, including working cavity and heat exchanger, the outside of the working cavity is communicated with pipeline, the both ends of the pipeline are communicated with the bottom and vertical side of working cavity respectively, the heat exchanger is arranged in pipeline, air circulation assembly for making air circulation flow is provided in the pipeline, the uniform temperature block is slidably connected in working cavity along vertical direction, first through-hole for temperature sensor to pass through is set in the top of working cavity, recess is set in the uniform temperature block and is coaxially arranged with first through-hole, the temperature sensor penetrates first through-hole and is inserted into recess along vertical direction.

[0007] Optionally, the left and right sides of the working cavity are provided with bidirectional self-locking pulley, the rotating shaft of the bidirectional self-locking pulley is rotatably connected with the front and rear sides of the working cavity, the top of the uniform temperature block is provided with a pull rope, and one end of the pull rope away from the uniform temperature block is connected with the rotating shaft.

[0008] Optionally, the outer periphery of the working cavity is provided with a knob, one end of the knob close to the working cavity is inserted into the working cavity and is threadedly connected with the working cavity, one end of the pull rope is fixedly connected with the top of the uniform temperature block, and the other end of the pull rope is fixedly connected with the surface of the knob outside the working cavity by passing around the surface of the bidirectional self-locking pulley.

[0009] Optionally, a limiting assembly for stabilizing the uniform temperature block is arranged between the uniform temperature block and the working cavity.

[0010] Optionally, the limiting component is a heat preservation flange, the heat preservation flange comprises a horizontal plate and a vertical rod, the working cavity is provided with a second through hole for the vertical rod to pass through at the top, the heat preservation flange is inserted into the working cavity and the uniform temperature block along the vertical direction, and the bottom of the horizontal plate abuts against the top of the working cavity.

[0011] Optionally, a plurality of vertical rods are provided, and the plurality of vertical rods are provided in one-to-one correspondence with the second through holes.

[0012] Optionally, the heat exchanger comprises a heating pipe and an electronic refrigerating sheet.

[0013] Optionally, the two ends of the pipeline are sealingly connected with the working cavity.

[0014] The beneficial effects of the utility model lie in:

[0015] The heat exchanger heats the air in the working cavity and the pipeline, the circulating assembly improves the stability of the temperature of the uniform temperature block through air convection, the temperature sensor is inserted into the uniform temperature block through the heat preservation flange, the uniform temperature block can reciprocally slide along the vertical direction, so that the uniform temperature block can adapt to different temperature sensors, the uniform temperature block is limited through the heat preservation flange, the phenomenon that the uniform temperature block shakes is reduced, and the accuracy of temperature calibration of the temperature sensor and the safety in use are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure sectional view of the utility model.

[0017] The correspondence between the reference signs and names in the drawing is as follows: 1, working cavity; 12, temperature sensor; 2, heat exchanger; 3, pipeline; 4, air circulating assembly; 41, rotary driving part; 42, fan blade; 5, uniform temperature block; 6, bidirectional self-locking pulley; 7, pull rope; 8, knob; 91, horizontal plate; 92, vertical rod. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] Please refer to Figure 1 The utility model provides a technical scheme:

[0020] The utility model provides an air bath constant temperature tank for temperature calibration, which comprises a working cavity 1 and a heat exchanger 2, and a pipeline 3 is connected to the outside of the working cavity 1, the two ends of the pipeline 3 are connected to the bottom and the vertical side of the working cavity 1 respectively, the pipeline 3 is vertically arranged, one end of the pipeline 3 is sealingly connected to the center of the bottom of the working cavity 1, and the other end of the pipeline 3 is sealingly connected to a vertical side close to the top of the working cavity 1; the heat exchanger 2 comprises a heating pipe and a refrigeration sheet, and the heat exchanger 2 is detachably connected to the middle part of the pipeline 3 through bolts.

[0021] An air circulation assembly 4 for circulating air is arranged below the heat exchanger 2, the air circulation assembly 4 comprises a rotary driving member 41 and a fan blade 42, the fixed end of the rotary driving member 41 is detachably connected to the outer wall of the pipeline 3 through bolts, the driving end of the rotary driving member 41 is fixedly connected to a rotating shaft, the rotating shaft penetrates the bottom of the pipeline 3 from bottom to top, the fan blade 42 is fixedly connected to the outer periphery of the rotating shaft, a plurality of fan blades 42 are arranged, the plurality of fan blades 42 are uniformly and spacedly arranged along the circumferential direction of the rotating shaft, the rotary driving member 41 drives the rotating shaft to rotate, thereby driving the plurality of fan blades 42 to rotate, so that the air in the working cavity 1 and the pipeline 3 is circulated and convection after being heated, and the uniformity of the air temperature in the working cavity 1 and the pipeline 3 is improved.

[0022] A temperature sensor is detachably connected to the bottom side of the temperature equalizing block 5 through bolts, which is used for detecting the temperature of the temperature equalizing block 5 to facilitate the heat exchanger 2 to adjust the temperature of the constant temperature tank, a limiting assembly for stabilizing the temperature equalizing block 5 is arranged between the temperature equalizing block 5 and the working cavity 1, the limiting assembly is a heat preservation flange, the heat preservation flange comprises a horizontal plate 91 and a vertical rod 92, a second through hole is formed in the top of the working cavity 1 for the vertical rod 92 to pass through, the horizontal plate 91 is clamped to the top of the working cavity 1, a third through hole coaxially arranged with the second through hole is arranged on the temperature equalizing block 5, a plurality of vertical rods 92 are arranged, the plurality of vertical rods 92 are arranged one by one corresponding to the second through hole, the heat preservation flange is inserted into the top of the working cavity 1 and the temperature equalizing block 5 along the vertical direction, the bottom of the horizontal plate 91 abuts against the top of the working cavity 1, a first through hole is formed in the top of the working cavity 1 for the temperature sensor 12 to pass through, a groove coaxially arranged with the first through hole is formed on the temperature equalizing block 5, and the temperature sensor 12 penetrates the first through hole and is inserted into the groove along the vertical direction.

[0023] The work cavity 1 is provided with a bidirectional self-locking pulley 6 on the left and right sides, the rotating shaft of the bidirectional self-locking pulley 6 is rotatably connected with the front and rear inner sides of the work cavity 1, the top of the uniform temperature block 5 is provided with a pull rope 7, one end of the pull rope 7 away from the uniform temperature block 5 is connected with the rotating shaft, the outer periphery of the work cavity 1 is provided with a knob 8, one end of the knob 8 close to the work cavity 1 is inserted into the work cavity 1 and is in threaded connection with the work cavity 1, one end of the pull rope 7 is fixedly connected with the top of the uniform temperature block 5, the other end of the pull rope 7 is fixedly connected with the surface of the knob 8 after passing through the surface of the bidirectional self-locking pulley 6 and penetrating out of the work cavity 1, so as to facilitate the staff to adjust the height of the uniform temperature block 5 according to the length of the temperature sensor 12, when the temperature sensor 12 needs to be detected, the temperature sensor 12 is inserted into the groove from the top of the work cavity 1 through the first through hole and the second through hole, the temperature sensor 12 abuts against the bottom of the groove, the temperature sensor 12 is continuously pressed down to make the uniform temperature block 5 move downward, and when the uniform temperature block 5 reaches the appropriate depth, the pushing in is stopped, the bidirectional self-locking pulley 6 automatically locks the uniform temperature block 5 to stop the downward sliding; when the uniform temperature block 5 needs to be lifted, the knob 8 is rotated to drive the pull rope 7 to be wound on the surface of the knob 8, so that the uniform temperature block 5 is moved upward.

[0024] Finally, it should be noted that: the above only for the preferred examples of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. An air-bath thermostat for temperature calibration, comprising a working chamber (1) and a heat exchanger (2), characterized in that, The outer side of the working cavity (1) is communicated with a pipeline (3), both ends of the pipeline (3) are communicated with the bottom and the vertical side of the working cavity (1) respectively, the heat exchanger (2) is arranged in the pipeline (3), the pipeline (3) is provided with an air circulation assembly (4) for circulating air flow, the working cavity (1) is slidably connected with an isothermal block (5) in the vertical direction, a first through hole is formed in the top of the working cavity (1) for the temperature sensor (12) to pass through, a groove is formed in the isothermal block (5) coaxially arranged with the first through hole, and the temperature sensor (12) penetrates the first through hole and is inserted into the groove in the vertical direction.

2. The air-bath thermostat for temperature calibration according to claim 1, wherein Both sides of the working cavity (1) are provided with a bidirectional self-locking pulley (6), the rotating shaft of the bidirectional self-locking pulley (6) is rotatably connected with the front and rear sides of the working cavity (1), and the top of the isothermal block (5) is provided with a pull rope (7), one end of the pull rope (7) away from the isothermal block (5) is connected with the rotating shaft.

3. The air-bath thermostat for temperature calibration according to claim 2, wherein The outer periphery of the working cavity (1) is provided with a knob (8), one end of the knob (8) close to the working cavity (1) is inserted into the working cavity (1) and is in threaded connection with the working cavity (1), one end of the pull rope (7) is fixedly connected with the top of the isothermal block (5), and the other end of the pull rope (7) penetrates out of the working cavity (1) and is fixedly connected with the surface of the knob (8) after winding around the surface of the bidirectional self-locking pulley (6).

4. The air-bath thermostat for temperature calibration according to claim 1, wherein A limiting assembly for stabilizing the isothermal block (5) is arranged between the isothermal block (5) and the working cavity (1).

5. The air-bath thermostat according to claim 4, wherein The limiting assembly is a heat preservation flange, the heat preservation flange comprises a horizontal plate (91) and a vertical rod (92), a second through hole is formed in the top of the working cavity (1) for the vertical rod (92) to pass through, a third through hole coaxially arranged with the second through hole is correspondingly arranged on the isothermal block (5), and the heat preservation flange is inserted into the working cavity (1) and the isothermal block (5) in the vertical direction.

6. The air-bath thermostat for temperature calibration according to claim 5, wherein The vertical rod (92) is provided with a plurality of vertical rods (92) which are arranged one by one corresponding to the second through hole.

7. The air-bath thermostat according to claim 6, wherein The heat exchanger (2) comprises a heating pipe and a refrigeration sheet.

8. The air-bath thermostat according to claim 1, wherein Both ends of the pipeline (3) are sealingly connected with the working cavity (1). Both ends of the pipeline (3) are sealingly connected with the working cavity (1).

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