Electric heating constant-temperature drying box

Abstract

The utility model relates to the technical field of drying boxes, and discloses an electric heating constant-temperature drying box which comprises a constant-temperature drying box body, and a box door is arranged on the front surface of the constant-temperature drying box body; the U-shaped plate is arranged in the constant-temperature drying box body; the placing plate is slidably arranged on the inner side of the U-shaped plate; a fixing assembly is arranged in the constant-temperature drying box body and comprises a positioning hole formed in the inner side wall of the constant-temperature drying box body; according to the drying box, the position of the containing plate can be fixed through the fixing assemblies by means of connection of the positioning holes and the inserting rods, compared with an existing device, fixing is firmer, movement of the containing plate can be better limited, meanwhile, the gear, rack, spring and other assemblies are arranged in the shell, the appearance is more attractive, and the assemblies are not prone to being damaged due to collision. According to the drying box, a rubber base is mounted in a through hole through the placement assembly, the vertical rod can be mounted, and a test tube can be reversely buckled on the vertical rod during drying, so that drying treatment is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of drying oven technology, specifically an electric heating constant temperature drying oven. Background Technology

[0002] Electric thermostatic drying ovens are commonly referred to as drying ovens, constant temperature drying ovens, or simply drying boxes. These ovens are typically constructed from thin steel plates. Inside, there is a sample placement chamber and a working chamber. The working chamber has shelves for placing samples for drying. A fairly thick insulation layer separates the working chamber from the outer shell, using silicone wool or perlite as insulation material. A glass door or observation port is provided between the chamber doors to allow observation of the working chamber's condition. In medical experiments, a large number of test tubes are required. After cleaning, the test tubes need to be dried in a thermostatic forced-air drying oven for subsequent use.

[0003] Chinese utility model CN211739696U describes a constant temperature drying oven for biomedical use. It features a design that facilitates the removal of a placement plate. The principle involves using a U-shaped plate and gears to install the placement plate inside the drying oven. A spring drives the arc-shaped plate downwards, which in turn restricts the gears, thus fixing the position of the placement plate.

[0004] However, in the existing device, the engagement of the gear and the arc-shaped plate is unstable because both the gear and the inner teeth of the arc-shaped plate are designed with bevels. Since the arc-shaped plate is spring-loaded, the engagement with the gear is not stable. Therefore, when the plate is shaken or pulled, the arc-shaped plate cannot hold the gear in place, resulting in insufficient stability after installation. To address these issues, a more secure drying oven has been designed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides an electric heating constant temperature drying oven, which has the advantage of being more securely fixed after installation, thus solving the problem of insufficient fixation in existing devices during use.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: an electric thermostatic drying oven, comprising: a thermostatic drying oven body with a door on its front surface; a U-shaped plate disposed inside the thermostatic drying oven body; a placement plate slidably disposed inside the U-shaped plate; a fixing assembly disposed inside the thermostatic drying oven body, the fixing assembly comprising: a positioning hole opened in the inner side wall of the thermostatic drying oven body; a shell disposed at one end of the placement plate; a rotating rod inserted into the interior of the shell and rotatably connected to the shell; a gear fixedly sleeved on the outer side wall of the rotating rod; a rack disposed inside the shell and meshing with the gear; a slider disposed inside the shell and connected to one end of the rack; an insertion rod inserted into the interior of the shell and connected to the slider, and the other end inserted into the positioning hole; a spring sleeved on the outer side of the insertion rod and connected at both ends to the inner side wall of the shell and the slider.

[0009] In some embodiments, the inner wall of the positioning hole is fitted to the outer wall of one end of the insertion rod.

[0010] In some embodiments, the fixing component further includes a torque disposed at one end of the rotating rod.

[0011] In some embodiments, the fixing component further includes a stop block disposed at one end of the rack.

[0012] In some embodiments, the fixing component further includes a cone disposed at one end of the insert rod.

[0013] In some embodiments, the fixing component further includes rollers rotatably disposed on both sides of the placement plate.

[0014] In some embodiments, a placement assembly is provided on the top of the placement plate, the placement assembly comprising: a through hole formed in the top of the placement plate; a rubber base inserted into the through hole; and a vertical rod disposed on the top of the rubber base.

[0015] In some embodiments, the placement assembly further includes a sponge block disposed on the top of the pole.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides an electric heating constant temperature drying oven, which has the following beneficial effects:

[0018] 1. This drying oven uses a fixing component to fix the position of the placement plate by connecting positioning holes and insert rods. Compared with existing devices, the fixing is more secure and can better restrict the movement of the placement plate. At the same time, the gear, rack, spring and other components are set inside the shell, making the exterior more aesthetically pleasing and less susceptible to damage from bumps.

[0019] 2. This drying oven allows for the installation of uprights by placing a rubber base inside the through hole using a mounting component. During drying, test tubes can be inverted onto the uprights for convenient drying. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the constant temperature drying oven of this utility model;

[0022] Figure 3 This is a schematic diagram of the connection between the placement plate and the rollers in this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the housing of this utility model.

[0024] In the diagram: 11. Main body of the constant temperature drying oven; 12. Oven door; 13. U-shaped panel; 14. Placement plate;

[0025] 2. Fixing component; 21. Positioning hole; 22. Housing; 23. Rotating rod; 231. Torque; 24. Gear; 25. Rack; 251. Stop; 26. Slider; 27. Insert rod; 271. Cone; 28. Spring; 29. ​​Roller;

[0026] 3. Component placement; 31. Through hole; 32. Rubber base; 33. Upright pole; 34. Sponge block. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0029] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0031] Electric thermostatic drying ovens are commonly referred to as drying ovens, constant temperature drying ovens, or simply drying boxes. These ovens are typically constructed from thin steel plates. Inside, there is a sample placement chamber and a working chamber. The working chamber has shelves for placing samples for drying. A fairly thick insulation layer separates the working chamber from the outer shell, using silicone wool or perlite as insulation material. A glass door or observation port is provided between the chamber doors to allow observation of the working chamber's condition. In medical experiments, a large number of test tubes are required. After cleaning, the test tubes need to be dried in a thermostatic forced-air drying oven for subsequent use.

[0032] In related technologies, a U-shaped plate and gears are used to install the placement plate into the drying oven. A spring moves the curved plate downwards, restricting the gears and thus fixing the position of the placement plate. However, in existing devices, the engagement between the gears and the curved plate is unstable because both the gears and the inner teeth of the curved plate are beveled. Since the curved plate is spring-loaded, the engagement is not secure. Therefore, when the placement plate is shaken or pulled, the curved plate cannot hold the gears in place, resulting in insufficient stability after installation.

[0033] To address some of the problems in related technologies, this application provides an electric heating constant temperature drying oven. When the placement plate 14 needs to be disassembled for cleaning, simply rotate the rotating rod 23, which simultaneously drives the gear 24 to mesh with the rack 25, causing the rack 25 to move alternately inside the housing 22. The outer wall of the slider 26 fits against the inner wall of the housing 22, allowing the rack 25 to move stably inside the housing 22. During the movement of the slider 26, the spring 28 is pulled to extend, while the insert rod 27 is pulled back to the inside of the housing 22 and disengaged from the positioning hole 21. At this point, the restriction on the housing 22 is released, and the placement plate 14 can be pulled out from the inside of the U-shaped plate 13 for cleaning by pulling the housing 22. After cleaning, rotate the rotating rod 23 in the same manner as described above, and then install the placement plate 14 inside the U-shaped plate 13. Finally, release the rotating rod 23, the spring 28 retracts, and the slider 26 moves inside the housing 22, pushing the insert rod 27 out of the housing 22 and inserting it into the positioning hole 21 for fixation.

[0034] This application is described below with reference to the accompanying drawings and specific embodiments:

[0035] This application provides an electric thermostatic drying oven, comprising: a drying oven body 11 with a door 12 on its front surface; a U-shaped plate 13 disposed inside the drying oven body 11; a placement plate 14 slidably disposed on the inner side of the U-shaped plate 13; a fixing assembly 2 disposed inside the drying oven body 11, the fixing assembly 2 comprising: a positioning hole 21 formed in the inner side wall of the drying oven body 11; a shell 22 disposed at one end of the placement plate 14; and a rotating rod 23 inserted at one end into the shell 22. The rotating rod 23 is rotatably connected to the housing 22; the gear 24 is fixedly sleeved on the outer side wall of the rotating rod 23; the rack 25 is disposed inside the housing 22 and meshes with the gear 24; the slider 26 is disposed inside the housing 22 and connected to one end of the rack 25; one end of the insert rod 27 is inserted into the inside of the housing 22 and connected to the slider 26, and the other end is inserted into the inside of the positioning hole 21; the spring 28 is sleeved on the outside of the insert rod 27 and connected at both ends to the inner side wall of the housing 22 and the slider 26.

[0036] Specifically, the model of the constant temperature drying oven body 11 is FYL-YS-50LK / 100L / 138L. The principle mainly includes the following parts: sensor, control circuit and actuator.

[0037] Sensors: Temperature control chambers are typically equipped with temperature probes to monitor the temperature inside the chamber in real time. When the temperature probe detects that the temperature inside the chamber is higher or lower than the set temperature range, it sends a signal to the control circuit.

[0038] Control Circuit: The control circuit is the core component of the constant temperature control chamber. Based on the signal from the temperature probe, it controls the operation of the cooling or heating devices. Specifically, when the temperature exceeds the upper limit, the control circuit activates the cooling system to lower the temperature; when the temperature falls below the lower limit, it activates the heating system to raise the temperature. The control circuit typically includes components such as an electrical contact thermometer, a bidirectional thyristor, and capacitors. Through the coordinated operation of these components, precise temperature control is achieved.

[0039] Actuators: The actuators mainly include the refrigeration compressor and the heater. The refrigeration compressor lowers the internal temperature of the chamber by circulating refrigerant, while the heater raises the internal temperature using resistance wires or infrared rays. These actuators operate according to the instructions of the control circuit, thereby achieving constant temperature control.

[0040] Air circulation system: Mid-to-high-end constant temperature control boxes are also equipped with an air circulation system, which usually uses a turbine fan to force the cold air to circulate, ensuring that the temperature in all corners of the box is uniform.

[0041] When the placement plate 14 needs to be removed for cleaning, simply rotate the rotating rod 23, which simultaneously drives the gear 24 to mesh with the rack 25, causing the rack 25 to move alternately inside the housing 22. The outer wall of the slider 26 fits against the inner wall of the housing 22, allowing the rack 25 to move stably inside the housing 22. During the movement of the slider 26, the spring 28 will be pulled to extend, while the insert rod 27 will be dragged back into the housing 22 and disengaged from the positioning hole 21. At this point, the restriction on the housing 22 is released, and the placement plate 14 can be pulled out from the inside of the U-shaped plate 13 for cleaning by pulling the housing 22. After cleaning, rotate the rotating rod 23 in the same way as described above, and then install the placement plate 14 into the inside of the U-shaped plate 13. Finally, release the rotating rod 23, the spring 28 will retract, and the slider 26 will move inside the housing 22, pushing the insert rod 27 out of the housing 22 and inserting it into the positioning hole 21 for fixation.

[0042] In some embodiments, the inner wall of the positioning hole 21 is fitted to the outer wall of one end of the insertion rod 27.

[0043] The design that fits snugly during use makes the placement plate 14 more stable and less prone to shaking after installation.

[0044] In some embodiments, the fixing component 2 further includes a knob 231 disposed at one end of the rotating rod 23.

[0045] The design of the knob 231 makes it easy to grip, and the grooves on the surface of the knob 231 can increase friction when rotating.

[0046] In some embodiments, the fixing component 2 further includes a stop 251 disposed at one end of the rack 25.

[0047] The design of the stop 251 during use ensures that the rack 25 will not separate from the gear 24 when the gear 24 and the rack 25 are engaged.

[0048] In some embodiments, the fixing component 2 further includes a cone 271 disposed at one end of the insertion rod 27.

[0049] The pointed design of the cone 271 during use makes it easier to insert one end of the insertion rod 27 into the positioning hole 21.

[0050] In some embodiments, the fixing component 2 further includes rollers 29 rotatably disposed on both sides of the placement plate 14.

[0051] The design of the roller 29 during use reduces friction when the placement plate 14 is inserted into the U-shaped plate 13, resulting in smoother insertion.

[0052] In some embodiments, a placement assembly 3 is provided on the top of the placement plate 14. The placement assembly 3 includes: a through hole 31 opened on the top of the placement plate 14; a rubber base 32 inserted into the interior of the through hole 31; and a vertical rod 33 disposed on the top of the rubber base 32.

[0053] When using the test tube, first insert the rubber base 32 into the through hole 31 as needed, and then invert the test tube onto the upright 33 for drying. The through hole 31 is designed not only to install the rubber base 32 as needed, but also to allow for better air circulation.

[0054] In some embodiments, the placement component 3 further includes a sponge block 34 disposed on the top of the upright 33.

[0055] The design of the sponge block 34 during use can reduce the friction of the top tube of the upright 33 on the test tube when it comes into contact with the test tube.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," and "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0057] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electrically heated constant temperature drying oven, comprising: The main body of the constant temperature drying oven (11) has a door (12) on its front surface; A U-shaped plate (13) is disposed inside the body (11) of the constant temperature drying oven; The placement plate (14) is slidably disposed on the inner side of the U-shaped plate (13); The characteristic feature is that a fixing component (2) is provided inside the body (11) of the constant temperature drying oven, and the fixing component (2) includes: Positioning holes (21) are provided on the inner side wall of the constant temperature drying oven body (11); A housing (22) is disposed at one end of the placement plate (14); A rotating rod (23) is inserted into the interior of the housing (22) at one end and is rotatably connected to the housing (22); Gear (24) is fixedly sleeved on the outer side wall of the rotating rod (23); A rack (25) is disposed inside the housing (22) and meshes with the gear (24); A slider (26) is disposed inside the housing (22) and connected to one end of the rack (25); The insertion rod (27) has one end inserted into the interior of the housing (22) and connected to the slider (26), and the other end inserted into the interior of the positioning hole (21); Spring (28) is sleeved on the outside of the insert rod (27) and its two ends are connected to the inner sidewall of the housing (22) and the slider (26).

2. The electric thermostatic drying oven according to claim 1, characterized in that: The inner wall of the positioning hole (21) is in contact with the outer wall of one end of the insertion rod (27).

3. The electric thermostatic drying oven according to claim 1, characterized in that: The fixing component (2) also includes: A knob (231) is located at one end of the rotating rod (23).

4. The electric thermostatic drying oven according to claim 1, characterized in that: The fixing component (2) also includes: A stop block (251) is disposed at one end of the rack (25).

5. The electric thermostatic drying oven according to claim 1, characterized in that: The fixing component (2) also includes: A cone (271) is disposed at one end of the insert (27).

6. The electric thermostatic drying oven according to claim 1, characterized in that: The fixing component (2) also includes: Rollers (29) are rotatably mounted on both sides of the placement plate (14).

7. The electric thermostatic drying oven according to claim 1, characterized in that: The top of the placement plate (14) is provided with a placement component (3), the placement component (3) comprising: A through hole (31) is provided on the top of the placement plate (14); A rubber base (32) is inserted into the through hole (31); The upright (33) is set on top of the rubber base (32).

8. The electric thermostatic drying oven according to claim 7, characterized in that: The placement component (3) also includes: A sponge block (34) is disposed on the top of the upright (33).

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