Constant temperature box for reagent of water quality on-line automatic analyzer

Abstract

The utility model discloses a constant-temperature box for reagents of an on-line automatic water quality analyzer, which comprises a cuboid box body, an upper cover is buckled at the upper end of the box body, and the constant-temperature box is characterized in that a rectangular through hole is formed in one end, close to the box body, of the outer wall of one side of the long edge of the box body, and a refrigeration sheet is embedded in the through hole; the refrigerating surface of the refrigerating sheet faces the inside of the box body, and the heating surface faces the outside of the box body; the inner side of the refrigeration sheet is connected with a refrigeration fan through a cooling fin, and the outer side of the refrigeration sheet is bonded with a radiator; electric heating plates are arranged at the two ends in the box body and used for heating the interior of the box body. Two obliquely-arranged circulating fans are symmetrically arranged on the side, close to the refrigeration piece, in the box body through supports and used for accelerating cold air circulation in the box body. And the power supply control ends of the electric heating plate, the refrigeration sheet and the circulating fan are electrically connected with a single-chip microcomputer controller of the water quality on-line automatic analyzer through a relay respectively. The constant-temperature box can realize long-term stable storage of reagents and ensure the stability of the reagents.

Description

Technical Field

[0001] The utility model belongs to a storage device, in particular to a constant temperature box for reagents of an online automatic water quality analyzer. Background Art

[0002] The automatic water quality analyzer needs to use a variety of chemical reagents during the analysis process. Some reagents need to be stored away from light, and some reagents are easy to deteriorate at high temperatures. Therefore, during use, the storage temperature of the chemical reagents must be kept constant to ensure the stability of the reagents.

[0003] At present, chemical reagents are placed in the monitoring station together with the automatic water quality analyzer. The air conditioner in the monitoring station is used to ensure that the station and the reagents are kept at a constant temperature. Although the air conditioning temperature in the station is set at 24 degrees, the temperature in the entire station is uneven, and the stable storage of chemical reagents cannot be guaranteed. Long-term temperature instability will cause qualitative changes in chemical reagents and affect the data stability of online equipment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a constant temperature box for reagents of an online automatic water quality analyzer, which can realize long-term stable storage of reagents and ensure the stability of the reagents.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions:

[0006] A constant temperature box for reagents of an online automatic water quality analyzer comprises a box body with a rectangular shape, an upper cover is buckled on the upper end of the box body, and the special features are: a rectangular through hole is provided on the outer wall of one side of the long side of the box body near one end of the box body, and a cooling plate is embedded in the through hole, the cooling surface of the cooling plate faces the inside of the box body, and the heating surface faces the outside of the box body, so as to cool the box body; a cooling fan is connected to the inside of the cooling plate through a heat sink, so as to blow cold air into the box body; a radiator is bonded to the outside of the cooling plate, so as to realize the heat dissipation of the cooling plate;

[0007] Electric heating plates are provided at both ends of the box body for heating the inside of the box body; two obliquely arranged circulation fans are symmetrically provided through brackets on one side of the box body close to the refrigeration plate to accelerate the circulation of cold air in the box body; the power control ends of the electric heating plate, the refrigeration plate and the circulation fan are electrically connected to the single-chip microcomputer controller of the water quality online automatic analyzer through relays.

[0008] As a further preference, cooling fans are symmetrically provided on both sides of the radiator to improve the heat dissipation effect on the cooling fins.

[0009] As a further preference, a first guide plate is provided on the side of the box body away from the refrigeration fin, and a plurality of guide bosses are evenly distributed on the first guide plate. Each guide boss is wedge-shaped and is wider at the top and narrower at the bottom to improve the cold air circulation effect in the box body.

[0010] As a further preference, a second guide plate is provided on the bottom surface of the upper cover, and the guide bosses evenly distributed on the second guide plate are wedge-shaped, and the thickness of one end close to the first guide plate is greater than the thickness of the other end.

[0011] As a further preference, a temperature sensor and an XMT temperature controller are provided on the side wall of the box body on one side of the refrigeration plate, near the other end of the box body. The signal output end of the temperature sensor is connected to the XMT temperature controller, which is used to collect the temperature signal in the box body and set the upper and lower temperature limits; the signal output end of the XMT temperature controller is connected to the single-chip microcomputer controller of the online automatic water quality analyzer, which is used to control the refrigeration plate to start when the temperature in the box body exceeds the upper limit.

[0012] As a further preference, a photoelectric switch is provided at one end of the box body, and a signal output end of the photoelectric switch is connected to a single-chip microcomputer controller of the online automatic water quality analyzer for controlling the working state of the refrigeration plate according to the switch state of the upper cover.

[0013] The beneficial effects of the utility model are:

[0014] 1. The box body is cooled by a cooling fin arranged on the outer wall of one side of the long side of the box body in combination with a radiator, and the cooling fan arranged inside the cooling fin blows cold air into the box body, which can speed up the cooling speed inside the box body; two obliquely arranged circulation fans arranged in the box body near the cooling fin can speed up the circulation speed of cold air in the box body, so that the temperature inside the box body drops rapidly; the electric heating plates arranged at both ends of the box body can heat the box body;

[0015] 2. The temperature sensor and XMT temperature controller are installed on the side wall of the box body on one side of the refrigeration plate, close to the other end of the box body, so as to collect the temperature signal in the box body and set the upper and lower temperature limits. The single-chip microcomputer controller of the online automatic water quality analyzer controls the automatic start of the electric heating plate, refrigeration plate and circulation fan according to the upper and lower temperature limit values ​​set on the XMT temperature controller, so as to achieve a constant temperature between 20-24°C in the box body, realize long-term stable storage of reagents, and ensure the stability of reagents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 yes Figure 1 AA section view.

[0018] Figure 3 yes Figure 1 BB cross-sectional view.

[0019] Figure 4 yes Figure 1 Three-dimensional structure diagram.

[0020] Figure 5 It is a circuit block diagram of the utility model.

[0021] In the figure: box body 1, upper cover 2, cooling fan 3, radiator 4, XMT temperature control meter 5, temperature sensor 6, solid-state relay 7, first guide plate 8, guide boss 801, electric heating plate 9, heat sink 10, cooling fin 11, cooling fan 12, photoelectric switch 13, second guide plate 14, circulation fan 15, bracket 16. DETAILED DESCRIPTION

[0022] like Figure 1-Figure 5 As shown, the utility model relates to a constant temperature box for reagents of an online automatic analyzer for water quality, comprising a box body 1 with a rectangular shape, an upper cover 2 being buckled on the upper end of the box body 1, a rectangular through hole being provided on the outer wall on one side of the long side of the box body 1 near one end of the box body 1, and a semiconductor refrigeration sheet 11 being embedded in the through hole, the cooling surface of the refrigeration sheet 11 facing the inside of the box body 1 and the heating surface facing the outside of the box body 1, for cooling the inside of the box body 1; the gap around the refrigeration sheet 11 and the through hole is sealed by foaming.

[0023] On the inner side of the cooling fin 11, a cooling fan 12 is connected to the heat sink 10 through an adhesive bonded thereto in the box body 1, and is used to blow the cold air generated by the cooling fin 11 into the box body 1; a radiator 4 is bonded to the outer side of the cooling fin 11, and is used to dissipate heat from the cooling fin 11; and cooling fans 3 are symmetrically arranged on both sides of the radiator 4 to improve the heat dissipation effect of the cooling fin 11.

[0024] Electric heating plates 9 are attached to the inner walls at both ends of the box body 1 to achieve heating inside the box body 1; two obliquely arranged circulation fans 15 are symmetrically arranged through brackets 16 on one side of the box body 1 close to the cooling plate 11, and the circulation fans 15 are inclined upwardly and obliquely toward the other side of the cooling plate 11 to accelerate the circulation of cold air in the box body 1; the power control end of the electric heating plate 9 is electrically connected to the control end of the single-chip controller of the water quality online automatic analyzer through the solid-state relay 7, and the power control ends of the cooling plate 11, the cooling fan 12 and the circulation fan 15 are electrically connected to the control end of the single-chip controller of the water quality online automatic analyzer through an intermediate relay. The intermediate relay is located outside the box body 1.

[0025] A first guide plate 8 is fixed by screws on the side of the box body 1 away from the refrigeration fins 11. A plurality of guide bosses 801 are evenly distributed along the longitudinal direction of the first guide plate 8. Each guide boss 801 is wedge-shaped and wide at the top and narrow at the bottom to improve the cold air circulation effect in the box body 1. A second guide plate 14 is attached to the bottom surface of the upper cover 2. Wedge-shaped guide bosses are also evenly distributed on the second guide plate, and the thickness of one end close to the first guide plate 8 is greater than the thickness of the other end.

[0026] A temperature sensor 6 and an XMT temperature controller 5 are fixed on the side wall of the box body 1 on one side of the refrigeration plate 11, near the other end of the box body 1. The signal output end of the temperature sensor 6 is connected to the XMT temperature controller 5. The temperature sensor 6 is PT100, which is used to collect the temperature signal in the box body 1 and transmit it to the XMT temperature controller 5. The XMT temperature controller 5 runs through the side wall of the box body 1 and is used to set the upper and lower limits of the temperature. The signal output end of the XMT temperature controller 5 is connected to the single-chip controller of the water quality online automatic analyzer, which is used to control the refrigeration plate 11 to start when the temperature in the box body 1 exceeds the upper limit.

[0027] A photoelectric switch 13 is provided at one end of the box body 1. The photoelectric switch 13 is an E3Z type reflective photoelectric switch. The signal output end of the photoelectric switch 13 is connected to the single-chip controller of the water quality online automatic analyzer to control the working state of the refrigeration plate 11 according to the switch state of the upper cover 2.

[0028] When in use, the thermostatic box is placed in the online automatic water quality analyzer and the radiator is supported by a bracket fixed on the back panel of the analyzer. The upper and lower limits of the temperature in the box body 1 are set to 24°C and 20°C respectively through the XMT temperature control table 5, and the temperature in the box body 1 is detected by the PT100 temperature sensor 6. When the temperature is higher than the set upper temperature limit, the detected temperature over-limit alarm signal is transmitted to the single-chip microcomputer controller of the online automatic water quality analyzer through the XMT temperature control table 5, and the single-chip microcomputer controller controls the refrigeration plate 11, the refrigeration fan 12 and the circulation fan 15 to work simultaneously through the intermediate relay, and the cold air generated by the refrigeration plate 11 is blown into the box body 1 through the refrigeration fan 12, and the circulation of the cold air in the box body 1 is accelerated through the circulation fan 15, so that the temperature in the box body 1 quickly drops to within the set temperature range, and then the refrigeration plate 11, the refrigeration fan 12 and the circulation fan 15 stop working at the same time.

[0029] When the temperature in the box body 1 is lower than the set lower temperature limit, the detected temperature over-limit alarm signal is transmitted to the single-chip controller of the water quality online automatic analyzer through the XMT temperature control meter 5, and the single-chip controller controls the electric heating plate to be powered on through the solid-state relay, so that the temperature in the box body 1 quickly rises to within the set temperature range, and then the electric heating plate stops working.

[0030] When the upper cover 2 is opened to exchange reagents, the photoelectric switch 13 receives light and sends a signal to the single-chip controller, and the single-chip controller controls the refrigeration plate 11 to suspend operation; when the upper cover 2 is closed, the photoelectric switch blocks the light, and the single-chip controller controls the refrigeration plate 11 to start working.

[0031] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and implementation modes. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A thermostatic box for reagents of an online automatic water quality analyzer, comprising a box body with a rectangular shape, and an upper cover is buckled on the upper end of the box body, wherein: A rectangular through hole is provided on the outer wall of one side of the long side of the box body near one end of the box body, and a cooling sheet is embedded in the through hole, with the cooling surface of the cooling sheet facing the inside of the box body and the heating surface facing the outside of the box body, so as to cool the box body; a cooling fan is connected to the inside of the cooling sheet through the heat sink, so as to blow cold air into the box body; a radiator is bonded to the outside of the cooling sheet, so as to realize the heat dissipation of the cooling sheet; Electric heating plates are provided at both ends of the box body for heating the inside of the box body; two obliquely arranged circulation fans are symmetrically provided through brackets on one side of the box body close to the refrigeration plate to accelerate the circulation of cold air in the box body; the power control ends of the electric heating plate, the refrigeration plate and the circulation fan are electrically connected to the single-chip microcomputer controller of the water quality online automatic analyzer through relays.

2. The thermostatic box for reagents of an online automatic water quality analyzer according to claim 1, characterized in that: Cooling fans are symmetrically arranged on both sides of the radiator to improve the heat dissipation effect of the cooling fins.

3. The thermostatic box for reagents of an online automatic water quality analyzer according to claim 1, characterized in that: A first guide plate is arranged on the side of the box body away from the refrigeration fins, and a plurality of guide bosses are evenly distributed on the first guide plate. Each guide boss is wedge-shaped and wide at the top and narrow at the bottom, so as to improve the cold air circulation effect in the box body.

4. The thermostatic box for reagents of the online automatic water quality analyzer according to claim 3 is characterized by: A second guide plate is provided on the bottom surface of the upper cover. The guide bosses evenly distributed on the second guide plate are wedge-shaped, and the thickness of one end close to the first guide plate is greater than the thickness of the other end.

5. A thermostatic box for reagents of an online automatic water quality analyzer according to any one of claims 1 to 4, characterized in that: A temperature sensor and an XMT temperature controller are provided on the side wall of the box body on one side of the refrigeration plate, near the other end of the box body. The signal output end of the temperature sensor is connected to the XMT temperature controller, which is used to collect the temperature signal in the box body and set the upper and lower temperature limits; the signal output end of the XMT temperature controller is connected to the single-chip controller of the online automatic water quality analyzer, which is used to control the refrigeration plate to start when the temperature in the box body exceeds the upper limit.

6. The thermostatic box for reagents of the online automatic water quality analyzer according to claim 5 is characterized in that: A photoelectric switch is arranged at one end of the box body, and a signal output end of the photoelectric switch is connected to a single-chip microcomputer controller of the online automatic water quality analyzer, and is used to control the working state of the refrigeration plate according to the switch state of the upper cover.

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