cryostat

Abstract

The utility model discloses low -temperature constant temperature tank, the utility model relates to constant temperature tank technical field. This low -temperature constant temperature tank, including low -temperature constant temperature tank main part, the inside of low -temperature constant temperature tank main part is provided with sample tank, and the top of sample tank is provided with shallow recess, and the inside of sample tank is provided with sample basket, and the top fixedly connected of sample basket has limit frame, and the inner chamber of sample basket is provided with a plurality of fixing devices, and the lower surface rotation of shallow recess is provided with four locking devices, and fixing device includes bottom plate and top plate, and the upper surface rotation of bottom plate is connected with threaded rod, and the outer surface screw thread connection of threaded rod has sliding block, and the outer surface fixedly connected of sliding block has U -shaped support, and the inner surface fixedly connected of U -shaped support has slide rail, and the outer surface sliding connection of slide rail has first clamping seat and second clamping seat, and the utility model discloses can effectively prevent the sample basket displacement caused by equipment movement or vibration, also can guarantee the stable placement of sample in constant temperature environment.

Description

Technical Field

[0001] This utility model relates to the field of constant temperature bath technology, specifically a low-temperature constant temperature bath. Background Technology

[0002] A cryogenic bath is an experimental device that provides a stable low-temperature environment and is widely used in research fields such as biology, chemistry, and physics. It achieves precise temperature control through the coordinated operation of a refrigeration system, a heating system, and a temperature control system, ensuring the stability and reliability of the experimental environment. The refrigeration system is based on a reverse Carnot cycle, using a compressor, condenser, throttling device, and evaporator to continuously remove heat from the liquid inside the bath, thereby lowering the temperature. The heating system uses electric heating elements to fine-tune the temperature, ensuring it is precisely maintained at the set value. The temperature control system, as the core, monitors the temperature in real time using high-precision sensors and automatically adjusts the refrigeration or heating power to minimize temperature fluctuations. Cryogenic baths are not only suitable for basic experiments such as cell culture, enzyme reactions, and materials testing, but their application range can also be expanded through external circulation to meet different experimental needs. They are easy to operate, and some models support intelligent control, allowing remote adjustment via computer or mobile phone, improving the convenience and safety of experiments.

[0003] According to patent number CN202321202275.4, a low-temperature constant temperature bath is disclosed, relating to the field of constant temperature bath technology. It includes a body with a feeding trough on the top and a control device on the top. A temperature control tube is installed at the bottom of the control device. A storage basket is inserted into the feeding trough, and a slot is opened on the top of the storage basket. A lifting rod is inserted into the slot. By placing material in the storage basket, the basket is lifted and placed in the feeding trough using the lifting rods inside the slots on both sides. During placement, the operator's hands maintain a certain distance from the low-temperature liquid medium in the feeding trough. When the material needs to be removed, the lifting rods in the slots are pulled out to remove the storage basket from the feeding trough. The operator does not need to touch the low-temperature liquid medium with their hands. After the storage basket is removed from the feeding trough, the operator can directly remove the material from the basket, avoiding injury to the operator's hands and ensuring the surface condition of the material is not affected, facilitating observation of the material results.

[0004] The storage basket used to hold the sample containers in the aforementioned patent lacks fixation, making it prone to displacement when the equipment moves or vibrates, affecting the safety and stability of the experiment. Furthermore, the sample containers inside the storage basket also lack reliable fixing measures, causing them to shake and tilt when subjected to equipment vibration, further affecting the accuracy and repeatability of the experimental data. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a low-temperature constant temperature bath to solve the problem mentioned in the background art that the storage basket and internal sample container are prone to displacement and shaking when the equipment is moved or vibrated, resulting in insufficient experimental safety and data stability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature constant temperature bath, comprising a main body, a sample tank inside the main body, a shallow groove at the top of the sample tank, a sample basket inside the sample tank, a limiting frame fixedly connected to the top of the sample basket, multiple fixing devices inside the sample basket, four locking devices rotatably mounted on the lower surface of the shallow groove, each fixing device comprising a base plate and a top plate, a threaded rod rotatably connected to the upper surface of the base plate, a slider threadedly connected to the outer surface of the threaded rod, a U-shaped frame fixedly connected to the outer surface of the slider, a slide rail fixedly connected to the inner surface of the U-shaped frame, a first clamp and a second clamp slidably connected to the outer surface of the slide rail, a first spring fixedly connected to the outer surfaces of both the first and second clamps, and a locking device comprising a rotating rod, a pressure plate sleeved on the outer surface of the rotating rod, a limiting post fixedly connected to the lower surface of the pressure plate, and a second spring sleeved on the outer surface of the rotating rod.

[0007] Preferably, the lower surface of the base plate is fixedly connected to the bottom of the sample basket cavity, one side of the top plate is fixedly connected to the inner wall of the sample basket, the outer surface of the threaded rod is rotatably disposed inside the top plate, and a screw block is fixedly connected to the top end of the threaded rod.

[0008] Preferably, the first clamp and the second clamp are symmetrically arranged inside the U-shaped frame, and the end of the first spring away from the first clamp and the second clamp is fixedly connected to the inner surface of the U-shaped frame.

[0009] Preferably, the bottom end of the rotating rod is rotatably connected to the lower surface of the shallow groove, and the limiting post is disposed on the lower surface of the pressure plate away from the rotating rod.

[0010] Preferably, a fixing plate is fixedly connected to the top end of the rotating rod, the top end of the second spring is fixedly connected to the lower surface of the fixing plate, and the bottom end of the second spring is fixedly connected to the upper surface of the pressure plate.

[0011] Preferably, the four corners of the limiting frame are provided with limiting holes, and the outer surface of the limiting post is adapted to the inner surface of the limiting hole. Beneficial effects

[0012] This invention provides a low-temperature constant temperature bath. It has the following beneficial effects: 1. This low-temperature constant temperature bath, by setting up a locking device consisting of a rotating rod, a pressure plate, a limiting post and a second spring, uses the elastic restoring force of the spring to drive the limiting post to insert into the limiting hole, so as to achieve rapid and stable locking of the sample basket, effectively preventing the sample basket from shifting due to equipment movement or vibration, and improving the safety and reliability of the experimental process.

[0013] 2. This low-temperature constant temperature bath, through the setting of a fixing device consisting of a threaded rod, a slider, a U-shaped frame, a slide rail and a spring clamp, allows the clamping height to be adjusted by rotating the screw block to adapt to sample containers of different sizes. It also uses spring force to achieve self-adaptive clamping, avoiding container shaking, tilting or slipping, ensuring the stable placement of samples in a constant temperature environment, and improving the accuracy and ease of operation of the experiment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the sample basket of this utility model; Figure 3 This is a schematic diagram of the fixing device of this utility model; Figure 4 This is a schematic diagram of the locking device of this utility model.

[0015] In the diagram: 1. Low-temperature constant temperature bath body; 2. Sample tank; 3. Shallow groove; 4. Sample basket; 5. Limiting frame; 6. Limiting hole; 7. Fixing device; 701. Base plate; 702. Top plate; 703. Threaded rod; 704. Slider; 705. Rotating block; 706. U-shaped frame; 707. Slide rail; 708. First clamp; 709. Second clamp; 710. First spring; 8. Locking device; 801. Rotating rod; 802. Pressure plate; 803. Limiting post; 804. Second spring; 805. Fixing plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1-4As shown, this utility model provides a low-temperature constant temperature bath, including a low-temperature constant temperature bath body 1. A sample tank 2 is disposed inside the low-temperature constant temperature bath body 1. A shallow groove 3 is disposed on the top of the sample tank 2. A sample basket 4 is disposed inside the sample tank 2. A limiting frame 5 is fixedly connected to the top of the sample basket 4. Multiple fixing devices 7 are disposed in the inner cavity of the sample basket 4. Four locking devices 8 are rotatably disposed on the lower surface of the shallow groove 3. The fixing device 7 includes a base plate 701 and a top plate 702. A threaded rod 703 is rotatably connected to the upper surface of the base plate 701. The outer surface of the threaded rod 703 is threaded. A slider 704 is connected, and a U-shaped frame 706 is fixedly connected to the outer surface of the slider 704. A slide rail 707 is fixedly connected to the inner surface of the U-shaped frame 706. A first clamp 708 and a second clamp 709 are slidably connected to the outer surface of the slide rail 707. A first spring 710 is fixedly connected to the outer surface of both the first clamp 708 and the second clamp 709. The locking device 8 includes a rotating rod 801. A pressure plate 802 is sleeved on the outer surface of the rotating rod 801. A limit post 803 is fixedly connected to the lower surface of the pressure plate 802. A second spring 804 is sleeved on the outside of the rotating rod 801.

[0018] Specifically, the lower surface of the base plate 701 is fixedly connected to the bottom of the inner cavity of the sample basket 4, one side of the top plate 702 is fixedly connected to the inner wall of the sample basket 4, the outer surface of the threaded rod 703 is rotatably disposed inside the top plate 702, and a rotating block 705 is fixedly connected to the top of the threaded rod 703.

[0019] Specifically, the first clamp 708 and the second clamp 709 are symmetrically arranged inside the U-shaped frame 706, and the end of the first spring 710 away from the first clamp 708 and the second clamp 709 is fixedly connected to the inner surface of the U-shaped frame 706.

[0020] Specifically, the bottom end of the rotating rod 801 is rotatably connected to the lower surface of the shallow groove 3, and the limiting post 803 is set on the lower surface of the pressure plate 802 away from the rotating rod 801.

[0021] Specifically, the top end of the rotating rod 801 is fixedly connected to a fixing plate 805, the top end of the second spring 804 is fixedly connected to the lower surface of the fixing plate 805, and the bottom end of the second spring 804 is fixedly connected to the upper surface of the pressure plate 802.

[0022] Specifically, limit holes 6 are provided at the four corners of the limit frame 5, and the outer surface of the limit post 803 is adapted to the inner surface of the limit hole 6.

[0023] The working principle of the above embodiments: In use, after placing the sample basket 4 into the sample slot 2, the limiting frame 5 is supported on the shallow groove 3. By moving the pressure plate 802 upward, the bottom end of the limiting post 803 is higher than the upper surface of the limiting frame 5. At this time, the second spring 804 is compressed. Then, the locking device 8 is rotated to rotate the limiting post 803 directly above the limiting hole 6. Then, the pressure plate 802 is released. Under the elastic restoring force of the second spring 804, the pressure plate 802 moves the limiting post 803 downward, so that the limiting post 803 is inserted into the limiting hole 6. At this time, the second spring 804 is still in a compressed state. All locking devices 8 repeat the above operation. Under the elastic force of the second spring 804 and the limiting action of the limiting post 803 in the four locking devices 8, the limiting frame 3 is locked in the shallow groove 3. The sample basket 4 is locked in the groove 3. According to the height of the sample container, the rotating block 705 is rotated, which drives the threaded rod 703 to rotate. The slider 704 rises and falls along the threaded rod 703, and the U-shaped frame 706 rises and falls accordingly, so that the height of the first clamp 708 and the second clamp 709 is adapted to the height of the sample container. Then, the first clamp 708 and the second clamp 709 are moved along the slide rail 707, so that the first clamp 708 and the second clamp 709 are far apart. After the sample container is placed between the first clamp 708 and the second clamp 709, the first clamp 708 and the second clamp 709 are released. Under the action of the elastic restoring force of the first spring 710, the first clamp 708 and the second clamp 709 move closer to each other and clamp the sample container, thus fixing the sample container.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] 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. A low-temperature constant temperature bath, comprising a low-temperature constant temperature bath body (1), characterized in that: The low-temperature constant temperature bath body (1) is provided with a sample tank (2) inside. The top of the sample tank (2) is provided with a shallow groove (3). The sample tank (2) is provided with a sample basket (4) inside. The top of the sample basket (4) is fixedly connected with a limiting frame (5). The inner cavity of the sample basket (4) is provided with multiple fixing devices (7). The lower surface of the shallow groove (3) is rotatably provided with four locking devices (8). The fixing device (7) includes a base plate (701) and a top plate (702). The upper surface of the base plate (701) is rotatably connected with a threaded rod (703). The outer surface of the threaded rod (703) is threadedly connected with a slider (704). A U-shaped frame (706) is fixedly connected to the outer surface of the slider (704), and a slide rail (707) is fixedly connected to the inner surface of the U-shaped frame (706). A first clamp (708) and a second clamp (709) are slidably connected to the outer surface of the slide rail (707). A first spring (710) is fixedly connected to the outer surface of both the first clamp (708) and the second clamp (709). The locking device (8) includes a rotating rod (801). A pressure plate (802) is sleeved on the outer surface of the rotating rod (801). A limit post (803) is fixedly connected to the lower surface of the pressure plate (802). A second spring (804) is sleeved on the outside of the rotating rod (801).

2. The low-temperature constant temperature bath according to claim 1, characterized in that: The lower surface of the bottom plate (701) is fixedly connected to the bottom of the inner cavity of the sample basket (4), one side of the top plate (702) is fixedly connected to the inner wall of the sample basket (4), the outer surface of the threaded rod (703) is rotatably disposed inside the top plate (702), and a screw block (705) is fixedly connected to the top end of the threaded rod (703).

3. The low-temperature constant temperature bath according to claim 1, characterized in that: The first clamp (708) and the second clamp (709) are symmetrically arranged inside the U-shaped frame (706), and the end of the first spring (710) away from the first clamp (708) and the second clamp (709) is fixedly connected to the inner surface of the U-shaped frame (706).

4. The low-temperature constant temperature bath according to claim 1, characterized in that: The bottom end of the rotating rod (801) is rotatably connected to the lower surface of the shallow groove (3), and the limiting post (803) is set on the lower surface of the pressure plate (802) away from the rotating rod (801).

5. The low-temperature constant temperature bath according to claim 1, characterized in that: The top end of the rotating rod (801) is fixedly connected to a fixing plate (805), the top end of the second spring (804) is fixedly connected to the lower surface of the fixing plate (805), and the bottom end of the second spring (804) is fixedly connected to the upper surface of the pressure plate (802).

6. The low-temperature constant temperature bath according to claim 1, characterized in that: Limiting holes (6) are provided at the four corners of the limiting frame (5), and the outer surface of the limiting post (803) is adapted to the inner surface of the limiting hole (6).

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