Constant-temperature measuring and reading equipment

Abstract

The utility model relates to a constant-temperature measuring and reading device which comprises a rack, a constant-temperature chamber and a detection module, the constant-temperature chamber is installed on the rack, a supporting seat is installed in the constant-temperature chamber, an electric heating film is installed between the inner wall of the constant-temperature chamber and the supporting seat, the supporting seat is rotationally connected with a detection seat, and the detection seat is rotationally connected with the detection module. A plurality of placement grooves are formed in the detection base, detection test tubes filled with liquid to be detected are installed in the placement grooves, a rotating assembly for driving the detection base to rotate is arranged on the rack, the detection module is installed on the side wall of the constant-temperature chamber, the detection end of the detection module faces one detection test tube, and the detection end of the detection module faces the other detection test tube. An injection assembly for injecting an auxiliary detection solvent into the detection test tube is arranged on the rack. The method has the effect of improving the detection accuracy of the constant-temperature measuring and reading equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spectral detection, in particular to a constant-temperature reading device. BACKGROUND

[0002] The spectral element detector is an optical instrument that measures the light reflected by the surface of an object using a spectrometer, captures, analyzes and displays spectral information, and thereby determines what elements are contained in the object. It can separate complex light into a spectrum and further analyze the composition and content of elements.

[0003] A straight reading spectrometer convenient to use disclosed in Chinese patent No. CN214794419U includes a platform, a fixed block is fixedly arranged on the upper surface of the platform, a fixed box is fixedly arranged on the upper surface of the fixed block, a first limiting block is fixedly arranged on the inner wall of the fixed box, a limiting groove is formed on the first limiting block, a lifting rod is slidably arranged in the limiting groove, a connecting block is fixedly arranged on one side of the lifting rod, a rotating wheel is rotatably arranged at the bottom end of the lifting rod, a second limiting block is fixedly arranged in the fixed box, and a round rod is rotatably arranged on the second limiting block. The second handle is rotated to drive the round rod, the round rod drives the oval block, the oval block is rotated with the rotating wheel, the oval block is in an oval shape, the lifting rod can be lifted, the lifting rod drives the connecting block to move, the connecting block drives the computer on the third limiting block and the fixed plate to move up and down, the height is adjusted, different heights of workers are adapted, and the working efficiency is improved.

[0004] For the related technology in the above, the straight reading spectrometer in the prior art clamps the to-be-detected object through the cooperation of the arc-shaped block and the bidirectional screw rod, and realizes the effect of detecting the to-be-detected object. However, such detection directly exposes the to-be-detected object to the outside, and as known, the change of the ambient temperature will significantly cause the deviation of the spectral detection result. Placing the to-be-detected object outside for detection reduces the accuracy of the detection of the straight reading spectrometer. SUMMARY

[0005] In order to improve the detection accuracy of the constant-temperature reading device, the present application provides a constant-temperature reading device.

[0006] The constant-temperature reading device provided by the present application adopts the following technical scheme:

[0007] The utility model provides a constant temperature reading device, including frame, constant temperature room and detection module, the constant temperature room is installed on the frame, support seat is installed in the constant temperature room, electric heating film is installed between the constant temperature room wall and the support seat, the detection seat is rotatably connected on the support seat, a plurality of placement grooves are opened on the detection seat, detection test tube is installed in the placement groove and fills the liquid to be measured, the rotation component that drives the detection seat rotates is arranged on the frame, the detection module is installed on the side wall of constant temperature room, and the detection end of detection module faces one detection test tube, and the injection component for injecting auxiliary detection solvent into the detection test tube is arranged on the frame.

[0008] Through the above technical scheme, during detection, the detection test tube is installed in the placement groove, the electric heating film is powered on to heat the constant temperature room, the detection seat is rotated by the rotation component to move the detection test tube, and in the process, the solvent is injected into the detection test tube by the injection component until the temperature of the liquid to be measured is raised to the specified temperature, and then the liquid to be measured is detected by the detection module, so that the liquid to be measured is detected under constant temperature. By setting the constant temperature room and the electric heating film, the temperature in the constant temperature room is always maintained at a specified temperature, so that the liquid to be measured and the solvent in the detection test tube can be quickly raised to the specified temperature, the constant temperature room is isolated from the outside, and the detection of the liquid to be measured is as little as possible. The detection deviation of the liquid to be measured is reduced, and the detection accuracy of the constant temperature reading device is improved compared with the prior art.

[0009] Optionally, the rotation component includes a rotation motor, a connecting seat, a synchronous wheel and a synchronous belt, the connecting seat is connected to the bottom end of the detection seat, the rotation motor is installed on the frame, the synchronous wheel is connected to the output shaft of the rotation motor and the connecting seat, and the synchronous belt is installed between the two synchronous wheels.

[0010] Through the above technical scheme, when the detection seat is rotated, the rotation motor is started to rotate the synchronous wheel, and the connecting seat is driven by the synchronous belt to ensure that each detection test tube can be accurately moved to the specified position, and the effect of driving the detection seat to move is realized.

[0011] Optionally, the injection assembly comprises a lifting seat, an injection tube and a thermostat, a top end of the thermostat is provided with a sealing plate, the sealing plate is provided with a mounting hole and a first injection hole, the mounting hole and the first injection hole correspond to one of the placing slots respectively, the first injection hole is aligned with the detection end of the detection module, the sealing plate is connected with a mounting frame, the lifting seat is vertically and slidingly fitted on the mounting frame and is aligned with the first injection hole, the mounting frame is provided with a lifting assembly for driving the lifting seat to move, the thermostat is mounted on the mounting frame, the surface of the thermostat is provided with a winding groove, the thermostat is internally provided with a plurality of electric heating rods, the injection tube is wound on the winding groove, one end of the injection tube is mounted on the lifting seat, and the other end is connected with a device for providing solvent externally, and the surface of the thermostat is provided with a thermostat cover, the thermostat cover covers the injection tube wound on the thermostat.

[0012] By adopting the technical scheme, when the solvent is injected, the solvent moves in the injection tube, in this process, the electric heating rods are powered to heat the thermostat, the solvent is heated through heat exchange until the solvent is injected into the detection test tube in the first injection hole, and the effect of injecting the solvent is achieved. The solvent is heated by the thermostat, so that the solvent has a certain temperature before entering the to-be-tested liquid, which can also accelerate the to-be-tested liquid to reach the specified temperature, and the detection efficiency of the to-be-tested liquid is improved.

[0013] Optionally, the lifting seat is mounted with an injection head, a hole diameter of an outlet end of the injection head is smaller than that of the injection tube, and the injection head is aligned with the first injection hole, and the injection tube and the injection head are provided with a connecting assembly for stabilizing one end of the injection tube.

[0014] By adopting the technical scheme, the solvent is injected into the detection test tube through the injection head with a smaller injection hole diameter, so that the injection diameter of the solvent is smaller when the solvent is injected, and the injection accuracy of the solvent is improved.

[0015] Optionally, the connecting assembly comprises a connecting head and a bellows, the connecting head comprises a rotating part and a mounting part, the mounting part is rotationally connected to a top end of the rotating part, the injection head is provided with an inlet hole, the rotating part is threadedly fitted in the inlet hole, one end of the injection tube is connected to the mounting frame, and the bellows is mounted between the mounting part and the one end of the injection tube.

[0016] By adopting the technical scheme, when the injection tube is mounted, the rotating part is threadedly fitted in the inlet hole, and then the bellows is mounted between the injection tube and the mounting part, when the injection head descends with the lifting seat, the bellows is stretched, and the mounting of the end of the injection tube is achieved.

[0017] Optionally, the lifting assembly comprises a lifting motor, a lifting screw rod, a limiting rail and a moving block, the limiting rail is vertically connected to the mounting frame, the moving block is slidingly fitted on the limiting rail, the lifting seat is connected to the moving block, the lifting screw rod is vertically rotatably connected to the mounting frame and is in threaded cooperation with the lifting seat, and the lifting motor is mounted on the mounting frame and coaxially connected to the lifting screw rod.

[0018] By using the above technical scheme, when the lifting seat is driven to move, the lifting motor is started to rotate the lifting screw rod, and the lifting seat is lowered by the cooperation and limitation of the limiting rail and the moving block, thereby achieving the effect of driving the lifting seat to move.

[0019] Optionally, a liquid inlet pipe is arranged on the lifting seat, a second injection hole is formed on the sealing plate at a position corresponding to the liquid inlet pipe, the second injection hole is aligned with one of the test tubes, one end of the liquid inlet pipe is connected to a device for providing the liquid to be tested outside, and a mounting assembly for limiting the liquid inlet pipe is arranged on the lifting seat.

[0020] By using the above technical scheme, by arranging the liquid inlet pipe, the operator does not need to inject the liquid to be tested into the test tube in advance, and only needs to place the test tube during operation, thereby simplifying the operation steps of the operator and improving the operation convenience of the constant-temperature reading device.

[0021] Optionally, the mounting assembly comprises a mounting column, a limiting ring and a mounting spring, the lifting seat is connected with a mounting block, the mounting column is connected to the liquid inlet pipe, the liquid inlet pipe is vertically arranged in the mounting block through the mounting column, limiting ring grooves are arranged at both ends of the mounting column, the limiting ring is mounted in the limiting ring grooves, and the mounting spring is sleeved on the mounting column and located between the mounting block and the limiting ring below.

[0022] By using the above technical scheme, when the liquid inlet pipe is mounted, the limiting ring is mounted in the limiting ring groove above, the bottom end of the mounting column is passed through the mounting frame, and then the mounting spring and the limiting ring below are connected in sequence, thereby achieving the detachable mounting of the liquid inlet pipe.

[0023] Optionally, a cover is arranged on the sealing plate, and the cover covers the injection assembly.

[0024] By using the above technical scheme, the cover is used to assist in packaging the injection assembly, and when the constant-temperature reading device is not used, the cover covers the injection assembly to block the external dust and impurities, thereby ensuring the cleanliness of the injection assembly and further ensuring the detection accuracy of the constant-temperature reading device.

[0025] In summary, the present application has at least one of the following beneficial technical effects:

[0026] 1. When detecting, install the detection test tube in the placement groove, power on the electric heating film, heat the constant temperature chamber, rotate the detection seat by rotating the assembly, move the detection test tube, inject the solvent into the detection test tube by the injection assembly, until the temperature of the liquid to be detected rises to the specified temperature, detect the liquid to be detected by the detection module, realize the effect of detecting the liquid to be detected under constant temperature condition. By setting the constant temperature chamber and the electric heating film, the temperature in the constant temperature chamber is always maintained at the specified temperature, so that the liquid to be detected and the solvent in the detection test tube can quickly rise to the specified temperature, the constant temperature chamber also isolates the outside, reduces the detection interference of the external environment temperature on the liquid to be detected as much as possible, reduces the detection deviation of the liquid to be detected, and improves the detection accuracy of the constant temperature reading device compared with the prior art;

[0027] 2. When injecting the solvent, the solvent moves in the injection pipe, in the process, the electric heating rod is powered on to heat the thermostat, the solvent is heated through heat exchange, until the solvent is injected into the detection test tube in the first injection hole, the effect of injecting the solvent is realized. By heating the solvent with the thermostat, the solvent has a certain temperature before entering the liquid to be detected, so that the liquid to be detected can also reach the specified temperature quickly, and the detection efficiency of the liquid to be detected is improved;

[0028] 3. When installing the liquid inlet pipe, the limiting ring is installed in the limiting ring groove above, the installation column bottom end is inserted through the installation frame, and then the installation spring and the limiting ring below are connected in sequence, so that the liquid inlet pipe can be detachably installed. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the overall structure schematic diagram of the constant temperature reading device in the embodiment of the application.

[0030] Figure 2 It is the explosion diagram for embodying the constant temperature chamber and the sealing plate structure in the embodiment of the application.

[0031] Figure 3 It is the sectional view for embodying the constant temperature chamber inside and the rotating assembly structure in the embodiment of the application.

[0032] Figure 4 It is the sectional view for embodying the detection module structure in the embodiment of the application.

[0033] Figure 5 It is the explosion diagram for embodying the injection assembly structure in the embodiment of the application.

[0034] Figure 6 It is the sectional view for embodying the lifting assembly structure in the embodiment of the application.

[0035] Figure 7 It is the sectional view for embodying the injection head and the connecting assembly structure in the embodiment of the application.

[0036] Figure 8 is an exploded view of a liquid inlet pipe and mounting assembly structure in the embodiment of the present application.

[0037] Figure 9 is a structural schematic view of an enclosure in the embodiment of the present application.

[0038] Legend: 1, rack; 11, constant temperature chamber; 12, support seat; 121, placement groove; 122, detection groove; 123, detection test tube; 13, electric heating film; 14, mounting frame; 15, detection seat; 2, rotating assembly; 21, rotating motor; 22, connecting seat; 23, synchronous wheel; 24, synchronous belt; 3, detection module; 4, sealing plate; 41, first injection hole; 42, mounting hole; 43, second injection hole; 44, enclosure; 5, injection assembly; 51, lifting seat; 511, injection head; 5111, liquid inlet hole; 52, injection pipe; 53, thermostat; 531, winding groove; 532, thermostat cover; 6, lifting assembly; 61, lifting motor; 62, lifting screw; 63, limiting rail; 64, moving block; 7, connecting assembly; 71, connecting head; 711, rotating part; 712, mounting part; 72, bellows; 8, liquid inlet pipe; 9, mounting assembly; 91, mounting column; 911, limiting ring groove; 92, limiting ring; 93, mounting spring. DETAILED DESCRIPTION

[0039] The following will be described in detail with reference to the accompanying drawings. Figures 1-9 The present application will be further described in detail.

[0040] The embodiment of the present application discloses a constant temperature reading device. Referring to Figure 1 , Figure 2 and Figure 3 , the constant temperature reading device comprises a rack 1, wherein a constant temperature chamber 11 is mounted on the rack 1, the constant temperature chamber 11 is in a cylindrical shape, a support seat 12 is mounted in the constant temperature chamber 11, and an electric heating film 13 is mounted between the inner wall of the constant temperature chamber 11 and the support seat 12.

[0041] Referring to Figure 2 , Figure 3 and Figure 4The support base 12 is provided with a detection seat 15, a plurality of placing grooves 121 are formed in the detection seat 15, a detection groove 122 is arranged below the placing grooves 121, a detection test tube 123 is arranged between the placing grooves 121 and the detection groove 122, a fixing ring is connected to the detection test tube 123, and the fixing ring abuts against the bottom wall of the placing groove 121. The rack 1 is provided with a rotating assembly 2, the rotating assembly 2 comprises a rotating motor 21, a connecting seat 22, a synchronous wheel 23 and a synchronous belt 24. The connecting seat 22 is arranged at the bottom end of the detection seat 15, the rotating motor 21 is arranged on the rack 1, the synchronous wheel 23 is arranged on the output shaft of the rotating motor 21 and the connecting seat 22, and the synchronous belt 24 is arranged between the two synchronous wheels 23. The side wall of the constant-temperature chamber 11 is provided with a detection module 3, and the detection end of the detection module 3 faces one of the detection grooves 122.

[0042] When the detection test tube 123 is driven to move, the rotating motor 21 is started to drive the synchronous wheel 23 to rotate, the detection seat 15 is driven to move through the synchronous belt 24, and each detection test tube 123 can be accurately moved to the detection end of the detection module 3, so that the effect of driving the detection test tube 123 to move is realized.

[0043] With reference to Figure 1 and Figure 2 , the top wall of the constant-temperature chamber 11 is fixedly connected with a cover plate 4, the cover plate 4 is provided with a first injection hole 41, a mounting hole 42 and a second injection hole 43, the first injection hole 41, the mounting hole 42 and the second injection hole 43 correspond to one of the placing grooves 121 respectively, and the first injection hole 41 is aligned with the detection end of the detection module 3.

[0044] With reference to Figure 1 , Figure 5 and Figure 6 , the cover plate 4 is provided with an injection assembly 5, the injection assembly 5 comprises a lifting seat 51, an injection tube 52 and a thermostat 53. The rack 1 is provided with a mounting frame 14, the lifting seat 51 is arranged on the mounting frame 14 and is aligned with the first injection hole 41, the mounting frame 14 is provided with a lifting assembly 6, the lifting assembly 6 comprises a lifting motor 61, a lifting screw 62, a limiting rail 63 and a moving block 64. The limiting rail 63 is vertically arranged on the mounting frame 14, the moving block 64 is slidingly arranged on the limiting rail 63, and the lifting seat 51 is arranged on the moving block 64. The lifting screw 62 is rotatably connected to the mounting frame 14 and is parallel to the limiting rail 63, the lifting screw 62 penetrates through the lifting seat 51 and is threadedly connected with the lifting seat 51. The lifting motor 61 is arranged on the mounting frame 14 and is coaxially connected to the lifting screw 62.

[0045] With reference to Figure 5 and Figure 7The injection head 511 is bolted on the lifting seat 51, the injection end of the injection head 511 has a smaller diameter than the injection pipe 52, and is aligned with the first injection hole 41, and the injection head 511 is provided with a liquid inlet hole 5111. The thermostat 53 is installed on the mounting bracket 14, the thermostat 53 is in a cylindrical shape, the surface of the thermostat 53 is provided with a winding groove 531, and the thermostat 53 is internally provided with a plurality of electric heating rods. The thermostat 53 is provided with a thermostat cover 532, and the thermostat cover 532 covers the winding groove 531. The injection pipe 52 is arranged in the winding groove 531 and located between the thermostat 53 and the thermostat cover 532. One end of the injection pipe 52 is installed on the mounting bracket 14, and the other end is connected to an external solvent supply device.

[0046] Referring to Figure 7 The injection pipe 52 and the injection head 511 are provided with a connecting assembly 7, and the connecting assembly 7 includes a connecting head 71 and a bellows 72. The connecting head 71 includes a rotating part 711 and a mounting part 712, the mounting part 712 is rotatably connected to the top end of the rotating part 711, the rotating part 711 is threadedly fitted in the liquid inlet hole 5111, and the bellows 72 is installed between the mounting part 712 and one end of the injection pipe 52 through a throat clamp.

[0047] Before injection, the injection head 511 is bolted on the lifting seat 51, then the rotating part 711 is threadedly fitted in the liquid inlet hole 5111, and the bellows 72 is installed between one end of the injection pipe 52 and the mounting part 712; during injection, the solvent moves in the injection pipe 52, in the process, the solvent is heated by the electric heating rod, the heated solvent enters the injection head 511 through the bellows 72, and finally is injected into the test tube 123, thereby realizing the effect of injecting the heated solvent into the test tube 123.

[0048] Referring to Figure 1 and Figure 8 In order to improve the operation convenience of the constant temperature reading device, the lifting seat 51 is provided with a liquid inlet pipe 8 and a mounting assembly 9, the mounting assembly 9 includes a mounting column 91, a limiting ring 92 and a mounting spring 93. The mounting column 91 is fixedly connected to the surface of the liquid inlet pipe 8, the lifting seat 51 is provided with a mounting block, the mounting column 91 vertically penetrates through the mounting block, the limiting ring groove 911 is arranged at both ends of the mounting column 91, the limiting ring 92 is installed in the limiting ring groove 911, and the mounting spring 93 is sleeved on the mounting column 91 and located between the mounting block and the lower limiting ring 92. The liquid outlet end of the liquid inlet pipe 8 is aligned with the second mounting hole 42, and the other end is connected to an external device for providing a to-be-measured liquid.

[0049] When the liquid inlet pipe 8 is installed, the limiting ring 92 is installed in the upper limiting ring groove 911, then the liquid inlet pipe 8 is inserted through the mounting frame 14, the upper limiting ring 92 is in contact with the mounting frame 14, then the mounting spring 93 is sleeved on the mounting column 91, finally the limiting ring 92 is installed in the lower limiting ring groove 911, thereby the liquid inlet pipe 8 is installed. The liquid inlet pipe 8 is used for assisting in injecting the liquid to be detected, so that the operator does not need to inject the liquid to be detected in the detection test tube 123 in advance, and the operation convenience of the constant temperature reading device is improved.

[0050] With reference to Figure 1 and Figure 9 , in order to facilitate packaging of the constant temperature reading device, the cover plate 4 is connected with the cover 44 through bolts, the cover 44 covers the injection assembly 5, and the cover 44 is used for blocking external dust or impurities.

[0051] The implementation principle of the constant temperature reading device in the embodiment of the application is as follows: when the liquid to be detected is detected, the electric heating film 13 is powered on, the inside of the constant temperature chamber 11 is heated, the empty detection test tube 123 is placed in the placement groove 121 through the mounting hole 42, the detection seat 15 is rotated by starting the rotating motor 21, in the process, the liquid to be detected is injected into the detection test tube 123 through the liquid inlet pipe 8, then the solvent is injected into the detection test tube 123 through the injection pipe 52 and the injection head 511, the solvent is mixed with the liquid to be detected, in the process, the solvent is heated by the electric heating rod, finally the liquid to be detected in the detection test tube 123 is read by the detection module 3, thereby the effect of detecting the liquid to be detected is achieved.

[0052] By arranging the constant temperature chamber 11 and the electric heating film 13, the temperature in the constant temperature chamber 11 is always maintained at a specified temperature, so that the liquid to be detected and the solvent in the detection test tube 123 can be rapidly raised to the specified temperature, the constant temperature chamber 11 also isolates the outside, and the detection interference of the external environment temperature on the liquid to be detected is reduced as much as possible, the detection deviation of the liquid to be detected is reduced, and compared with the prior art, the detection accuracy of the constant temperature reading device is improved.

[0053] The above are preferred embodiments of the application, and do not limit the protection scope of the application, therefore: equivalent changes made on the basis of the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A thermostatic reading device, characterized by: The utility model provides a kind of detection device for liquid, including rack (1), constant temperature chamber (11) and detection module (3), the constant temperature chamber (11) is installed on the rack (1), support seat (12) is installed in the constant temperature chamber (11), electric heating film (13) is installed between the constant temperature chamber (11) inner wall and the support seat (12), detection seat (15) is rotatably connected on the support seat (12), a plurality of placing grooves (121) are opened on the detection seat (15), detection test tube (123) filled with liquid to be measured is installed in the placing groove (121), rotating assembly (2) for driving the detection seat (15) to rotate is provided on the rack (1), the detection module (3) is installed on the side wall of the constant temperature chamber (11), and the detection end of the detection module (3) faces one of the detection test tube (123), injection assembly (5) for injecting auxiliary detection solvent into the detection test tube (123) is provided on the rack (1).

2. The thermostatic reading device of claim 1, wherein: The rotating assembly (2) includes rotating motor (21), connecting seat (22), synchronous wheel (23) and synchronous belt (24), the connecting seat (22) is connected at the bottom end of the detection seat (15), the rotating motor (21) is installed on the rack (1), the synchronous wheel (23) is connected with one on the output shaft of the rotating motor (21) and the connecting seat (22), and the synchronous belt (24) is installed between the two synchronous wheels (23).

3. The thermostatic reading device of claim 1, wherein: The injection assembly (5) includes lifting seat (51), injection tube (52) and thermostat (53), the top end of the constant temperature chamber (11) is provided with sealing plate (4), the sealing plate (4) is provided with mounting hole (42) and first injection hole (41), the mounting hole (42) and the first injection hole (41) correspond to one placing groove (121) respectively, the first injection hole (41) is aligned with the detection end of the detection module (3), the sealing plate (4) is connected with mounting frame (14), the lifting seat (51) is vertically slidingly fitted on the mounting frame (14) and is aligned with the first injection hole (41), the mounting frame (14) is provided with lifting assembly (6) for driving the lifting seat (51) to move, the thermostat (53) is installed on the mounting frame (14), the surface of the thermostat (53) is provided with winding groove (531), a plurality of electric heating rods are built in the thermostat (53), the injection tube (52) is wound on the winding groove (531), one end of the injection tube (52) is installed on the lifting seat (51), and the other end is communicated with the device for providing solvent outside, the surface of the thermostat (53) is provided with thermostat cover (532), and the thermostat cover (532) covers the injection tube (52) wound on the thermostat (53).

4. The constant temperature reading device of claim 3, wherein: The injection head (511) is installed on the lifting seat (51), the aperture of the liquid outlet of the injection head (511) is smaller than the aperture of the injection tube (52), and the injection head (511) is aligned with the first injection hole (41); a connecting assembly (7) is arranged between the injection tube (52) and the injection head (511) to stabilize one end of the injection tube (52).

5. The thermostatic reading device of claim 4, wherein: The connecting assembly (7) comprises a connecting head (71) and a bellows (72); the connecting head (71) comprises a rotating part (711) and a mounting part (712); the mounting part (712) is rotatably connected to the top end of the rotating part (711); the injection head (511) is provided with a liquid inlet hole (5111); the rotating part (711) is threadedly connected to the liquid inlet hole (5111); one end of the injection tube (52) is connected to the mounting rack (14); and the bellows (72) is mounted between the mounting part (712) and one end of the injection tube (52).

6. The constant temperature reading device of claim 3, wherein: The lifting assembly (6) comprises a lifting motor (61), a lifting screw (62), a limiting rail (63) and a moving block (64); the limiting rail (63) is vertically connected to the mounting rack (14); the moving block (64) is slidably connected to the limiting rail (63); the lifting seat (51) is connected to the moving block (64); the lifting screw (62) is vertically and rotatably connected to the mounting rack (14) and is threadedly connected to the lifting seat (51); and the lifting motor (61) is mounted on the mounting rack (14) and is coaxially connected to the lifting screw (62).

7. The thermostatic reading device of claim 3, wherein: The lifting seat (51) is provided with a liquid inlet tube (8); the sealing plate (4) is provided with a second injection hole (43) corresponding to the position of the liquid inlet tube (8); the second injection hole (43) is aligned with one of the test tubes (123); one end of the liquid inlet tube (8) is connected to an external device for providing a liquid to be tested; and the lifting seat (51) is provided with a mounting assembly (9) for limiting the liquid inlet tube (8).

8. The thermostatic reading device of claim 7, wherein: The mounting assembly (9) comprises a mounting column (91), a limiting ring (92) and a mounting spring (93); the lifting seat (51) is connected to a mounting block; the mounting column (91) is connected to the liquid inlet tube (8); the liquid inlet tube (8) vertically penetrates the mounting block through the mounting column (91); both ends of the mounting column (91) are provided with limiting ring grooves (911); the limiting ring (92) is mounted in the limiting ring grooves (911); and the mounting spring (93) is sleeved on the mounting column (91) and is located between the mounting block and the limiting ring (92) below.

9. The constant temperature reading device of claim 3, wherein: The sealing plate (4) is provided with a sealing cover (44); and the sealing cover (44) covers the injection assembly (5).

Images