Damping freezer for sample refrigeration

Abstract

The utility model discloses a damping freezer for sample refrigeration, which comprises an outer box, the inner end of the outer box is fixedly connected with a partition plate, the upper end of the partition plate is provided with an inner box, the inner walls of the four ends of the outer box are fixedly connected with a plurality of fixed columns, the fixed columns are internally provided with limiting grooves, and the limiting grooves are fixedly connected with the partition plate. The inner ends of the limiting grooves are fixedly connected with second damping springs, and the other ends of the second damping springs are fixedly connected with limiting plates. Damping of the inner box in the transverse position can be completed by arranging the multiple sets of movable columns, the fixed columns and the second damping springs between the inner box and the outer box; by arranging a connecting rod, a second damping spring and a sliding assembly at the bottom of the outer box, damping of the whole freezing box in the vertical position can be achieved, so that the multiple damping effect is achieved, and the problem that the detection accuracy is affected due to the fact that the heavy metal samples in the freezing box are likely to be physically mixed, precipitated or leaked under vibration is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the heavy metal sample storage field, especially a shock attenuation freezer for sample refrigeration. BACKGROUND

[0002] Heavy metal samples refer to solid, liquid or biological tissue samples containing high concentrations of heavy metal elements (such as lead, mercury, cadmium, arsenic, chromium, etc.), which are usually used for environmental monitoring, industrial analysis, food safety testing or scientific research experiments. The main reason for refrigerating heavy metal samples is to maintain their stability and prevent changes in the heavy metal content in the samples. Specifically, refrigeration can: inhibit biological activity: refrigeration can slow down the metabolic activity of microorganisms such as bacteria and algae, which can change the form of heavy metals in the sample, thereby avoiding affecting the accuracy of the test results, slow down the rate of chemical reactions: low temperature environment can reduce the rate of certain chemical reactions such as oxidation and reduction, prevent changes in the valence state of heavy metal elements, and avoid the occurrence of precipitation or dissolution phenomena;

[0003] Currently, most of the freezers on the market that are specifically designed for heavy metal sample storage (especially standard models) do not integrate professional shock absorption structures, but instead directly adopt the design of ordinary commercial or medical freezers, relying only on basic rubber foot pads or fixed supports to reduce vibration. This design may barely work in normal scenarios, but under the special requirements of heavy metal sample storage, it can cause a series of serious problems, such as accelerated oxidation-reduction reactions (e.g., Cr 6+ →Cr 3+ ), changes in heavy metal toxicity, and vibration causing frequent friction between the sample and the container wall, leading to abnormal adsorption of heavy metal ions (e.g., Pb 2+ adsorption to plastic bottles), and finally, vibration interfering with the thermal balance of the refrigeration system, causing temperature fluctuations (±3℃ or more) in the box, affecting the storage conditions. After searching, it was found that the utility model with the application number "CN110726252A Medical Low Temperature Storage Equipment" also has the above-mentioned problems. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a shock attenuation freezer for sample refrigeration, solving the problem in the prior art that heavy metal sample freezers rely only on basic rubber foot pads or fixed supports to reduce vibration. This design may barely work in normal scenarios, but under the special requirements of heavy metal sample storage, it can cause a series of serious problems.

[0005] In order to achieve the above object, a shock-absorbing freezer for sample refrigeration is provided, comprising an outer box, the inner end of the outer box is fixedly connected with a partition plate, the upper end of the partition plate is provided with an inner box, the inner wall of the four ends of the outer box is fixedly connected with a plurality of fixed columns, the inside of the fixed column is provided with a limiting groove, the inner end of the limiting groove is fixedly connected with a second shock-absorbing spring, the other end of the second shock-absorbing spring is fixedly connected with a limiting plate;

[0006] The other end of the limiting plate is fixedly connected with a movable column, and the movable column is slidingly connected in the inside of the limiting groove, the other end of the movable column is fixedly connected to the outer end of the inner box, the movable column and the fixed column are evenly installed on the outer side of the four ends of the inner box and the inner side of the four ends of the outer box.

[0007] According to the shock-absorbing freezer for sample refrigeration, the bottom four ends of the outer box are fixedly connected with telescopic rods, and the bottom of the telescopic rod is fixedly connected with a base.

[0008] According to the shock-absorbing freezer for sample refrigeration, the upper two ends of the base are fixedly connected with connecting seats, and the inside of the connecting seat is provided with a sliding groove.

[0009] According to the shock-absorbing freezer for sample refrigeration, the inside of the sliding groove is slidingly connected with a sliding block, the top of the sliding block is rotatably connected with a connecting rod, and the other end of the connecting rod is rotatably connected to the bottom of the outer box.

[0010] According to the shock-absorbing freezer for sample refrigeration, the inside of the sliding groove is fixedly connected with a first shock-absorbing spring, and the other end of the first shock-absorbing spring is fixedly connected with the sliding block.

[0011] According to the shock-absorbing freezer for sample refrigeration, the inside bottom of the outer box is fixedly connected with a refrigeration machine, and one side of the refrigeration machine is provided with a refrigeration pipe.

[0012] According to the shock-absorbing freezer for sample refrigeration, the other end of the refrigeration pipe penetrates through the partition plate and is arranged at one end of the inner box, and the middle part of the refrigeration pipe adopts a corrugated pipe structure.

[0013] According to the shock-absorbing freezer for sample refrigeration, the bottom two ends of the outer box are provided with heat dissipation openings, the top of the outer box is hingedly connected with a box cover, the inside of the box cover is provided with a temperature sensor, the outer end of the outer box is fixedly connected with a controller, and the controller, the temperature sensor and the refrigeration machine are electrically connected.

[0014] The above scheme has the beneficial effects:

[0015] 1、The patent can achieve the damping of the inner box in the horizontal position by setting multiple sets of movable columns, fixed columns and damping springs two between the inner box and the outer box, and can achieve the damping of the entire freezer in the vertical position by setting connecting rods, damping springs two and sliding assemblies at the bottom of the outer box, so as to achieve the effect of multiple damping, prevent the physical mixing, precipitation or container leakage of heavy metal samples in the freezer under vibration, and affect the detection accuracy;

[0016] 2、The patent can accurately control the temperature in the freezer by cooperating with the temperature sensor, the refrigerator and the controller, so as to ensure the stability of the heavy metal samples in the refrigerator

[0017] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further illustrated in combination with the drawings and examples;

[0019] Figure 1 It is the front view of a sample refrigeration shock absorbing freezer of the utility model;

[0020] Figure 2 It is the longitudinal shock absorbing assembly schematic view of a sample refrigeration shock absorbing freezer of the utility model;

[0021] Figure 3 It is the fixed column internal schematic view of a sample refrigeration shock absorbing freezer of the utility model;

[0022] Figure 4 It is the freezing assembly schematic view of a sample refrigeration shock absorbing freezer of the utility model.

[0023] LEGEND:

[0024] 1, outer box, 2, controller, 3, inner box, 4, temperature sensor, 5, box cover, 6, fixed column, 7, telescopic rod, 8, base, 9, connecting seat, 10, sliding groove, 11, damping spring one, 12, sliding block, 13, connecting rod, 14, movable column, 15, limit slot, 16, limit plate, 17, damping spring two, 18, refrigeration pipe, 19, refrigerator, 20, heat dissipation port, 21, partition. DETAILED DESCRIPTION

[0025] The detailed embodiments of the utility model will be described in detail in this part, the preferred embodiment of the utility model is shown in the drawings, the role of the drawings is to supplement the description of the written part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0026] Referring to Figures 1-4 The utility model discloses a kind of shock-absorbing freezers for sample refrigeration, including outer box 1, the inner end of outer box 1 is fixedly connected with partition 21, the upper end of partition 21 is provided with inner box 3, the space inside outer box 1 is separated by partition 21, prevent the heat generated in the use process of bottom chiller 19 from affecting refrigeration effect, the inner wall of the four ends of outer box 1 is all fixedly connected with several fixed columns 6, the inside of fixed column 6 is provided with limiting groove 15, the inner end of limiting groove 15 is fixedly connected with shock-absorbing spring two 17, the other end of shock-absorbing spring two 17 is fixedly connected with limiting plate 16, shock-absorbing assembly one is installed at the outer side four ends of inner box 3, can complete shock-absorbing operation in multiple horizontal positions, while inner box 3 is rectangular structure, when heavy metal sample is placed, select appropriate container and the shape of inner box 3 is corresponded, this condition can be realized in production process using inner box 3 size negative mold to make corresponding container to store heavy metal sample;

[0027] The other end of limiting plate 16 is fixedly connected with movable column 14, and movable column 14 is slidably connected in the inside of limiting groove 15, the other end of movable column 14 is fixedly connected in the outer end of inner box 3, movable column 14 and fixed column 6 are evenly installed at the outer side four ends of inner box 3 and the inner side four ends of outer box 1, when horizontal vibration occurs in transportation, inner box 3 moves left and right under stress, at this time, movable column 14 and limiting plate 16 are extruded to shock-absorbing spring two 17, and the shock-absorbing work of shock-absorbing spring two 17 in horizontal position can be completed;

[0028] The bottom four ends of outer box 1 are fixedly connected with telescopic rod 7, the bottom of telescopic rod 7 is fixedly connected with base 8, telescopic rod 7 can support the outer box 1 above, and base 8 adopts metal base with high weight, can provide certain supporting force for the outer box 1 above, and can also prevent dumping during transportation;

[0029] The upper two ends of base 8 are fixedly connected with connecting seat 9, the inside of connecting seat 9 is provided with sliding groove 10, sliding groove 10 is slidably connected with sliding block 12 in the inside, the top of sliding block 12 is rotatably connected with connecting rod 13, the other end of connecting rod 13 is rotatably connected at the bottom of outer box 1, and the shock-absorbing assembly two can be limited by sliding groove 10 and sliding block 12;

[0030] The inner side of the chute 10 is fixedly connected with a damping spring 11, and the other end of the damping spring 11 is fixedly connected with the sliding block 12. When subjected to a longitudinal vibration force, the outer box 1 moves downward, at which time the two connecting rods 13 move outward, driving the sliding block 12 to slide in the chute 10, and the damping spring 11 is extruded. Under the action of the damping spring 11, the damping work in the vertical position can be realized, and the multiple damping effect is achieved, which prevents the physical mixing, precipitation or container leakage of the heavy metal samples in the freezer from affecting the detection accuracy. The two damping spring bodies in the device are made of 60Si2MnA alloy steel wire into a cylindrical spiral shape, the two ends are ground flat and equipped with rubber pads (anti-skid + noise reduction), and the surface is galvanized + dust cover, and the hydraulic damper is installed in parallel to complete the damping work;

[0031] The inner bottom of the outer box 1 is fixedly connected with a refrigeration machine 19, one side of the refrigeration machine 19 is provided with a refrigeration pipe 18, the other end of the refrigeration pipe 18 penetrates through the partition plate 21 and is arranged at one end of the inner box 3, and the middle part of the refrigeration pipe 18 adopts a corrugated pipe structure. The refrigeration machine 19 in the device adopts a Secop BD35F: 12V / 24V direct current compressor to realize the freezing effect,

[0032] The bottom of the outer box 1 is provided with a heat dissipation opening 20, and the top of the outer box 1 is hingedly connected with a box cover 5. The inside of the box cover 5 is provided with a temperature sensor 4, and the outer end of the outer box 1 is fixedly connected with a controller 2. The controller 2, the temperature sensor 4 and the refrigeration machine 19 are electrically connected. When the sensor detects the temperature, if the temperature is greater than the set value plus the hysteresis, the controller 2 starts the refrigeration machine 19; if the temperature is less than the set value minus the hysteresis, the controller 2 turns off the refrigeration machine 19.

[0033] Working principle: when in use, the worker places the heavy metal sample in the container in the inner box 3, then closes the box 5 above, and starts the refrigeration machine 19 at the bottom to deliver cold air to the inner box 3 through the refrigeration pipe 18, so as to refrigerate the heavy metal sample in the inner box 3. At the same time, the temperature sensor 4 on the box cover 5 can monitor the temperature in the inner box 3 in real time, so that the worker can accurately grasp the real-time temperature in the freezer;

[0034] When the lateral vibration occurs during the transportation, the inner box 3 is forced to move left and right, at this time, the movable column 14 and the limiting plate 16 drive the second damping spring 17 to be extruded, and the second damping spring 17 can complete the damping work of the lateral position, and when the longitudinal vibration force is received, the outer box 1 moves downward, at this time, the two connecting rods 13 move outward, drive the sliding block 12 to slide in the sliding groove 10, extrude the first damping spring 11, and the first damping spring 11 can realize the damping work of the vertical position, achieve the effect of multiple damping, prevent the physical mixing, precipitation or container leakage of the heavy metal samples in the freezer from affecting the detection accuracy.

[0035] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. A shock-absorbing freezer for sample refrigeration comprising an outer case (1), characterized in that, The inner end of the outer box (1) is fixedly connected with a partition plate (21), the upper end of the partition plate (21) is provided with an inner box (3), the inner walls of the four ends of the outer box (1) are fixedly connected with a plurality of fixed columns (6), the inside of the fixed column (6) is provided with a limiting groove (15), the inner end of the limiting groove (15) is fixedly connected with a second damping spring (17), the other end of the second damping spring (17) is fixedly connected with a limiting plate (16); The other end of the limiting plate (16) is fixedly connected with a movable column (14), and the movable column (14) is slidingly connected in the inside of the limiting groove (15), the other end of the movable column (14) is fixedly connected to the outer end of the inner box (3), and the movable column (14) and the fixed column (6) are evenly installed on the outer sides of the four ends of the inner box (3) and the inner sides of the four ends of the outer box (1).

2. The shock-attenuating freezer for sample refrigeration according to claim 1, characterized by The bottom four ends of the outer box (1) are fixedly connected with telescopic rods (7), and the bottoms of the telescopic rods (7) are fixedly connected with bases (8).

3. The shock-resistant freezer for sample refrigeration according to claim 2, characterized by The upper two ends of the base (8) are fixedly connected with connecting seats (9), and the inside of the connecting seat (9) is provided with a sliding groove (10).

4. The shock-attenuating freezer for sample refrigeration according to claim 3, characterized by The inside of the sliding groove (10) is slidingly connected with a sliding block (12), the top of the sliding block (12) is rotatably connected with a connecting rod (13), and the other end of the connecting rod (13) is rotatably connected to the bottom of the outer box (1).

5. The shock-attenuating freezer for sample refrigeration according to claim 4, characterized by One end of the inside of the sliding groove (10) is fixedly connected with a first damping spring (11), and the other end of the first damping spring (11) is fixedly connected with the sliding block (12).

6. The shock-resistant freezer for sample refrigeration according to claim 1, characterized by The inner side of the bottom of the outer box (1) is fixedly connected with a refrigeration machine (19), and one side of the refrigeration machine (19) is provided with a refrigeration pipe (18).

7. A shock-mitigating freezer for sample refrigeration according to claim 6, wherein, The other end of the refrigeration pipe (18) penetrates through the partition plate (21) and is arranged at one end of the inner box (3), and the middle part of the refrigeration pipe (18) adopts a corrugated pipe structure.

8. The shock-attenuating freezer for sample refrigeration according to claim 1, characterized by The bottoms of the outer box (1) are provided with heat dissipation openings (20), the top of the outer box (1) is hingedly connected with a box cover (5), the inside of the box cover (5) is provided with a temperature sensor (4), the outer end of the outer box (1) is fixedly connected with a controller (2), and the controller (2), the temperature sensor (4) and the refrigeration machine (19) are electrically connected.

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