CN219302373U

CN219302373U - Thermal analysis auxiliary operation device

Info

Publication number: CN219302373U
Application number: CN202223409846.XU
Authority: CN
Inventors: 张鹏; 陈倬为; 金叔宾; 盛海涛; 周芸芸; 许超; 智红亮; 方彦
Original assignee: Institute of Urban Safety and Environmental Science of Beijing Academy of Science and Technology
Current assignee: Institute of Urban Safety and Environmental Science of Beijing Academy of Science and Technology
Priority date: 2022-03-15
Filing date: 2022-12-16
Publication date: 2023-07-04
Anticipated expiration: 2032-12-16

Abstract

The utility model provides a thermal analysis auxiliary operation device, which is fixed on a thermal analysis device and comprises a fixing frame and a heating body for heating a sample, wherein the fixing frame is provided with a motor and a transmission assembly, the motor is connected with an upper pressing block, a lower pressing block and the heating body through the transmission assembly, the upper pressing block and the lower pressing block are used for pressing the sample, the transmission assembly is provided with a travel switch connected with the motor, and the travel switch is triggered when the heating body reaches a preset heating position. The utility model adopts a mechanical structure to compress and heat the sample, is more convenient and quick, can avoid manual operation injury, and adopts a travel switch to control the closing of the motor, so that the heating body can accurately heat the sample at a preset position.

Description

Thermal analysis auxiliary operation device

Technical Field

The utility model belongs to the technical field of mechanical structures, and particularly relates to a thermal analysis auxiliary operation device.

Background

The thermal analysis technology is mainly used in the fields of environmental protection, food, medical treatment, environmental monitoring and the like, and mainly analyzes substances released by heating objects.

The existing thermal analysis instrument in the market is generally inconvenient to install, complex in internal structure, easy to burn at high temperature, uneven in heating and the like. The existing thermal analysis instrument generally comprises an analysis tube, an analysis tube sealing cap and an open type heating body, wherein the operation method of the thermal analysis instrument is that the analysis tube fixing cap is firstly arranged at two ends of the analysis tube, then the open type heating body is opened, the analysis tube is put in the middle, and then the open type heating body is closed, so that a user can be scalded in the process.

Disclosure of Invention

The utility model aims to provide a thermal analysis auxiliary operation device, which solves the problem that in the prior art, when thermal analysis is carried out, the operation of manually installing an analysis tube is inconvenient.

The utility model provides a thermal analysis auxiliary operation device, which is fixed on a thermal analysis device and comprises a fixing frame and a heating body for heating a sample, wherein the fixing frame is provided with a motor and a transmission assembly, the motor is connected with an upper pressing block, a lower pressing block and the heating body through the transmission assembly, the upper pressing block and the lower pressing block are used for pressing the sample, the transmission assembly is provided with a travel switch connected with the motor, and the travel switch is triggered when the heating body reaches a preset heating position.

Preferably, the thermal analysis auxiliary operation device further comprises a wireless communication transmitting module and a piezoelectric ceramic piece, wherein the piezoelectric ceramic piece is arranged in a preset hole site of the sample disc, when the analysis tube is arranged in the preset hole site, the piezoelectric ceramic piece outputs to the wireless communication transmitting module for input, and a circuit where the motor is located comprises a wireless communication receiving module, a triode, an electromagnetic relay, a travel switch and a motor.

Preferably, the transmission assembly comprises a bidirectional screw rod, a limiting guide groove is formed in the fixing frame, the bidirectional screw rod is fixed in the limiting guide groove and connected with the motor, threads with opposite rotation directions are respectively formed on the upper side and the lower side of the bidirectional screw rod along the length direction, nut seats matched with the threads are respectively sleeved on the two sides of the bidirectional screw rod, and the nut seats are slidably arranged in the limiting guide groove; the nut seat is respectively connected with two ends of the heating body through a pivotable connecting rod.

Preferably, the two ends of the limiting guide groove are respectively provided with a travel switch, and when the nut seat triggers the travel switch, the motor stops.

Preferably, the nut seat is connected with the upper pressing block and the lower pressing block respectively, and when the motor stops, the upper pressing block and the lower pressing block compress the upper end and the lower end of the analysis tube.

Preferably, the heating body is provided with the locating hole on being close to the plane of connecting rod, is provided with the fixing base on the mount, is provided with the fixed orifices on the fixing base with the locating hole relatively, and locating shaft one end wears to establish in the locating hole, and the locating shaft other end wears to establish in the fixed orifices.

Preferably, the plane of the heating body far away from the connecting rod is provided with an open slot matched with the outer wall of the analysis tube.

Compared with the prior art, the utility model has the beneficial effects that the mechanical structure is adopted to compress and heat the sample, the sample is more convenient and quicker, the injury caused by manual operation can be avoided, and in addition, the travel switch is adopted to control the closing of the motor, so that the heating body can accurately heat the sample at the preset position.

Drawings

Fig. 1 is an isometric view of an assembly of a thermal resolution assistance device in accordance with an embodiment of the utility model.

Fig. 2 is an assembly explosion wiring diagram of the thermal analysis auxiliary operation device of fig. 1.

Fig. 3 is a schematic view of the thermal analysis-assisted operation device of the present utility model in actual operation.

Fig. 4 is a schematic diagram of a transmitting loop of a wireless communication module according to an embodiment of the utility model.

Fig. 5 is a schematic diagram of a receiving loop of a wireless communication module according to an embodiment of the utility model.

Wherein, the reference numerals are as follows:

10. a fixing frame; 11. a limit bracket; 111. a limiting guide groove; 112. an opening; 12. a fixed bracket; 13. a fixing seat; 131. a fixing hole; 14. positioning a shaft; 20. a two-way screw rod; 30. a heating body; 32. an open slot; 33. a notch; 40. a motor; 411. a belt; 412. a belt pulley; 413. an output shaft; 50. a nut seat; 51. briquetting; 60. a connecting rod; 61. a pin shaft; 70. a fixed rod; 80. a sample tray; 81. a resolving tube; 82. a tube cap; 83. and (5) pressing the needle.

Detailed Description

In order to more clearly illustrate the technical features of the present solution, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 3, an embodiment of the present utility model provides a thermal analysis auxiliary operating device, which is fixed on a thermal analysis device, the thermal analysis auxiliary operating device including a fixing frame 10 and a heating body 30 for heating a sample, a motor 40 and a transmission assembly are provided on the fixing frame 10, the motor 40 is connected to an upper pressing block 51, a lower pressing block 51 and the heating body 30 through the transmission assembly, the upper pressing block 51 and the lower pressing block 51 are used for pressing the sample, a travel switch connected to the motor 40 is provided on the transmission assembly, and the travel switch is triggered when the heating body 30 reaches a predetermined heating position.

Compared with the prior art, the utility model has the beneficial effects that the mechanical structure is adopted to compress and heat the sample, the sample is more convenient and quicker, the injury caused by manual operation can be avoided, and in addition, the travel switch is adopted to control the closing of the motor 40, so that the heating body 30 can accurately heat the sample at the preset position.

The travel switch can utilize the collision of the mechanical moving part to make the contact act to realize the connection or disconnection of the control circuit, and can be used for limiting the position or travel of the mechanical movement so as to automatically stop the moving machine according to a certain position or travel.

Referring to fig. 1 to 3, in the embodiment of the present utility model, the transmission assembly includes a bidirectional screw rod 20, a limiting guide groove 111 is provided on the fixing frame 10, the bidirectional screw rod is fixed in the limiting guide groove 111 and connected with the motor 40, threads with opposite rotation directions are respectively provided on the upper and lower sides of the bidirectional screw rod 20 along the length direction, nut seats 50 adapted to the threads are respectively sleeved on the two sides of the bidirectional screw rod 20, and the nut seats 50 are slidably provided in the limiting guide groove 111; the nut seats 50 are respectively connected with both ends of the heating body 30 through pivotable links 60.

Referring to fig. 1 to 3, the bidirectional screw rod 20 may drive the nut seat 50 to slide in the limit guide groove 111 in opposite directions, and when the nut seat 50 slides in opposite directions, the heating body 30 may be pushed to move in a direction approaching the sample under the driving of the pivotable connecting rod 60, and when the nut seat 50 slides in opposite directions, the heating body 30 may be pulled to move in a direction separating from the sample under the driving of the pivotable connecting rod 60. Thereby, the sample can be heated by a mechanical structure, and the injury caused by manual operation can be avoided. In one embodiment, the link 60 and the heating body 30, the link 60 and the nut seat 50 may be connected by a pin 61.

In one embodiment, the two ends of the limiting guide groove 111 are respectively provided with a travel switch connected with the motor 40, and when the nut seat 50 triggers the travel switch, the motor 40 stops.

Referring to fig. 1 to 3, a travel switch may be provided at both ends of the limit guide groove 111, and when the nut holder 50 slides to both ends of the limit guide groove 111, the travel switch is triggered, and the travel switch cuts off a circuit in which the motor 40 is located, and the motor 40 stops. A person skilled in the art can design the thread length of the bidirectional screw rod 20 according to the distance between the heating body 30 and the sample tray 80, so that the heating body 30 can just cooperate with the analysis tube 81 on the sample tray 80 when the nut seat 50 slides to the two ends of the limit guide groove 111. Referring to fig. 1, in the present utility model, the upper and lower nut seats 50, the upper press block 51, the lower press block 51, the upper and lower links 60, the positioning shaft 14, the heating body 30, and even the shaft pin 61 may all be moved, and all have a movement stroke. Those skilled in the art will appreciate that the travel switch may be mounted at the end of travel of other components.

Referring to fig. 1 to 3, in one embodiment, the fixing frame 10 includes a limit bracket 11, a fixing bracket 12, and a fixing rod 70, the fixing rod 70 is used to fix the thermal analysis auxiliary operation device on the thermal analysis device, and the positions of the heating body 30 and the analysis tube 81 correspond, a limit guide groove 111 is formed in the limit bracket 11, the motor 40 is fixed on the fixing bracket 12, the limit bracket 11 includes two long plate structures which are oppositely arranged and parallel to the bidirectional screw rod 20, and also includes block structures with upper and lower ends for fixing the bidirectional screw rod 20, and the long plate structures and the block structures can be connected by bolts. In this way, the limiting guide grooves 111 are machined in the opposite planes of the long plate-shaped structures, and the gap between the two opposite long plate-shaped structures naturally forms the opening 112.

Referring to fig. 1 and 2, the bi-directional screw 20 may be connected to an output shaft 413 of the motor 40 through a belt 411 and a pulley 412, or may be connected to the output shaft 413 of the motor 40 through a gear transmission.

Referring to fig. 4 and 5, in an embodiment, the thermal analysis auxiliary operation device further includes a wireless communication transmitting module and a piezoelectric ceramic plate, the piezoelectric ceramic plate is disposed in a preset hole of the sample tray, when the analysis tube is installed in the preset hole, the piezoelectric ceramic plate outputs to input the wireless communication transmitting module, and a circuit where the motor is located includes a wireless communication receiving module, a triode, an electromagnetic relay, a travel switch and a motor. After the analysis tube is placed in the hole site of sample dish, piezoceramics piece perception pressure signal passes through the interface and transmits wireless communication transmitting module, wireless communication transmitting module transmission signal, wireless communication receiving module passes through triode and amplifies and electromagnetic relay effect, and the motor starts, when the heating member reaches predetermined heating position, triggers limit switch, and the circuit is closed, and the motor stops moving.

Referring to fig. 3, in one embodiment, the nut holder 50 is connected to the upper and lower pressing blocks 51, respectively, and the upper and lower

pressing blocks

51, 51 press the upper and lower ends of the resolving pipe 81 on the sample tray 80 when the motor 40 is stopped.

Referring to fig. 1 to 3, the bidirectional screw rod 20 is connected with the motor 40, and the upper and lower sides of the bidirectional screw rod 20 in the length direction are respectively provided with threads having opposite rotation directions, one end of the nut seat 50 is respectively connected with the upper pressing block 51 and the lower pressing block 51, and the other end of the nut seat 50 is respectively connected with the two ends of the heating body 30 through the pivotable connecting rod 60. Thus, only one motor 40 is used to drive the two-way screw rod 20 to rotate, when the two-way screw rod 20 rotates, the upper pressing block 51 and the lower pressing block 51 can be driven to move in opposite directions by the upper nut seat 50 and the lower nut seat 50 because of different screw threads, when the upper pressing block 51 and the lower pressing block 51 move in opposite directions (namely, the upper pressing block 51 moves downwards and the lower pressing block 51 moves upwards) to press the upper end and the lower end of the analysis tube 81, the heating body 30 moves in a direction away from the connecting rod 60 to approach the sample tray 80 and heat the analysis tube 81, and when a preset heating effect is achieved, the upper pressing block 51 and the lower pressing block 51 move in opposite directions (namely, the upper pressing block 51 moves upwards and the lower pressing block 51 moves downwards) to loosen the analysis tube 81, and meanwhile, the heating body 30 moves in a direction close to the connecting rod 60 to realize that the sample tray 80 is far away from the heating of the analysis tube 81.

Referring to fig. 1 to 3, in one embodiment, a positioning hole is formed in a plane of the heating body 30, which is close to the connecting rod 60, a fixing seat is formed on the fixing frame 10, a fixing hole is formed on the fixing seat opposite to the positioning hole, one end of a positioning shaft is inserted into the positioning hole, and the other end of the positioning shaft is inserted into the fixing hole. The positioning shaft 14 can enable the left-right movement of the heating body 30 to be more stable, and ensures that the heating body 30 always moves stably in the length direction perpendicular to the bidirectional screw rod 20. The positioning shaft 14 may be disposed in parallel with one or more, and accordingly, the positioning hole and the fixing hole 131 may be disposed with one or more, which is not limited thereto.

Referring to fig. 1 to 3, in one embodiment, the heating body 30 is provided with an open groove 32 adapted to the outer wall of the resolving pipe 81 on a plane away from the connecting rod 60. When heating, the open groove 32 can wrap the outer wall of the analysis tube 81 for heating, so that the heating area of the analysis tube 81 can be increased, and the heating is more uniform.

Referring to fig. 1 to 3, in one embodiment, caps 82 are sleeved at two ends of the resolving tube 81, a gap 33 is provided at a position corresponding to the heating body 30 and the caps 81, the gap 33 is used for avoiding the caps 82, and a pressing needle 83 is further provided between the upper pressing block 51 and the lower pressing block 51, and the pressing needle 83 is used for fixing and pressing the resolving tube 81.

The technical features of the present utility model that are not described in the present utility model may be implemented by or using the prior art, and are not described in detail herein, but the above description is not intended to limit the present utility model, and the present utility model is not limited to the above examples, but is also intended to be within the scope of the present utility model by those skilled in the art.

Claims

1. The thermal analysis auxiliary operation device is characterized in that the thermal analysis auxiliary operation device is fixed on the thermal analysis device and comprises a fixing frame and a heating body used for heating a sample, a motor and a transmission assembly are arranged on the fixing frame, the motor is connected with an upper pressing block, a lower pressing block and the heating body through the transmission assembly, the upper pressing block and the lower pressing block are used for pressing the sample, a travel switch connected with the motor is arranged on the transmission assembly, and when the heating body reaches a preset heating position, the travel switch is triggered.

2. The thermal analysis auxiliary operation device according to claim 1, further comprising a wireless communication transmitting module and a piezoelectric ceramic piece, wherein the piezoelectric ceramic piece is arranged in a preset hole position of the sample tray, when the analysis tube is arranged in the preset hole position, the output of the piezoelectric ceramic piece is input to the wireless communication transmitting module, and a circuit where the motor is located comprises a wireless communication receiving module, a triode, an electromagnetic relay, a travel switch and the motor.

3. The thermal analysis auxiliary operation device according to claim 2, wherein the transmission assembly comprises a bidirectional screw rod, a limiting guide groove is arranged on the fixing frame, the bidirectional screw rod is fixed in the limiting guide groove and is connected with the motor, threads with opposite rotation directions are respectively arranged on the upper side and the lower side of the bidirectional screw rod along the length direction, nut seats matched with the threads are respectively sleeved on the two sides of the bidirectional screw rod, and the nut seats are slidably arranged in the limiting guide groove; the nut seat is respectively connected with two ends of the heating body through pivotable connecting rods.

4. The thermal analysis auxiliary operation device according to claim 3, wherein the limit guide groove is provided with the travel switch at both ends thereof, respectively, and the motor is stopped when the nut seat triggers the travel switch.

5. The thermal analysis auxiliary operation device according to claim 4, wherein the nut seat is connected with an upper pressing block and a lower pressing block, respectively, and the upper pressing block and the lower pressing block press the upper end and the lower end of the analysis tube when the motor is stopped.

6. The thermal analysis auxiliary operation device according to claim 5, wherein a positioning hole is formed in a plane, close to the connecting rod, of the heating body, a fixing seat is arranged on the fixing frame, a fixing hole is formed in the fixing seat opposite to the positioning hole, one end of a positioning shaft penetrates through the positioning hole, and the other end of the positioning shaft penetrates through the fixing hole.

7. The thermal analysis auxiliary operation device according to any one of claims 3 to 6, wherein an open groove adapted to an outer wall of the analysis tube is provided on a plane of the heating body away from the connecting rod.