A constant temperature water bath device for PGI experiment

Abstract

The utility model discloses a PGI experimental constant temperature water bath equipment, including water bath cabinet, fixed establishment and even heating mechanism, water bath cabinet: its front side is equipped with the cabinet door, and the inside intermediate upper end of water bath cabinet is equipped with the compartment, fixed establishment: it includes the inner tooth ring, gear no.

Description

Technical Field

[0001] This utility model relates to the technical field of constant temperature water bath equipment, specifically a constant temperature water bath equipment for PGI experiments. Background Technology

[0002] The PGI test, also known as the serum pepsinogen I test, is a non-invasive examination that assesses gastric mucosal function through blood analysis. It is primarily used to screen for chronic atrophic gastritis and the risk of gastric cancer. When the gastric mucosa atrophies, the PGI level decreases; a PGI ratio <3 indicates a high risk of gastric cancer. This test is simple to operate and allows for dynamic monitoring, often used as a preliminary screening method before gastroscopy. The test requires a constant-temperature water bath. Existing constant-temperature water bath equipment for PGI testing mainly consists of a water bath (containing the heat transfer medium), heating elements (electric heating tubes / plates providing heat), temperature sensors (thermocouples or thermistors detecting water temperature), and a stirring device (ensuring temperature uniformity). During use, the sensor... This device monitors the water temperature in real time and activates heating when the temperature drops below the set value. Once the set value is reached, it maintains a constant temperature by intermittent heating or stopping heating. Combined with the stirring of the stirring device, it can provide a stable incubation environment of 37℃±0.5℃ for PGI testing. Traditional constant temperature water bath equipment for PGI experiments requires an external fixing mechanism to fix the test dish. In order to achieve more uniform heating, multiple sets of heating elements are often laid inside the water bath cabinet. A stirring device is also required to ensure the uniformity of water temperature. Multiple sets of heating elements require high power operation, and the stirring device also requires an external drive device, resulting in excessive energy consumption and great inconvenience. Therefore, we propose a constant temperature water bath device for PGI experiments. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a constant temperature water bath device for PGI experiments. It can quickly fix the test dish and circulate water inside the water bath through a circulating pump and multiple connecting pipes. The water flow drives the propeller to rotate. With the heat conduction of a single heating tube and heat conduction ring, the water can be heated quickly, ensuring the uniformity of water temperature and achieving a constant temperature effect. This reduces energy consumption and can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a constant temperature water bath device for PGI experiments, comprising a water bath cabinet, a fixing mechanism, and a uniform heating mechanism; Water bath cabinet: It has a cabinet door on the front side, and a compartment is located in the upper middle part of the interior of the water bath cabinet; Fixing mechanism: It includes an internal gear ring, gear 1 and fixing plate. The upper middle of the interior of the water bath cabinet is provided with a sliding groove. The internal gear ring is slidably connected to the interior of the sliding groove. Gear 1 is set at the four corners of the interior of the sliding groove. The four gear 1 are arranged in a cross shape. Gear 1 is meshed with the internal gear ring. Fixing plate is set at the upper end of gear 1 to provide a foundation for fixing the test dish. Uniform heating mechanism: Located inside the front of the water bath cabinet, it can quickly fix the test dish and circulate water inside the water bath cabinet through a circulation pump and multiple connecting pipes. The water flow drives the propeller to rotate, and with the heat conduction of a single heating tube and heat conduction ring, it can quickly heat the water, ensure the uniformity of water temperature, achieve a constant temperature effect, and reduce energy consumption.

[0005] Furthermore, the fixing mechanism also includes a second gear, teeth, and a knob. The second gear is rotatably connected to the middle of the right side of the inner groove. The teeth are evenly arranged on the right side of the outer surface of the inner tooth ring. The teeth as a whole mesh with the second gear. The knob is located at the upper end of the second gear to provide a driving effect for fixing the detector dish.

[0006] Furthermore, the uniform heating mechanism includes a heat-conducting ring, an overflow hole, and a heating tube. The heat-conducting ring is located in the middle of the interior of the water bath cabinet. The inner wall of the heat-conducting ring is attached to the lower end of the outer surface of the compartment, and the outer surface of the heat-conducting ring is attached to the middle of the inner wall of the water bath cabinet. The overflow hole is evenly opened on the outer surface of the heat-conducting ring. The heating tube is located in the middle of the interior of the heat-conducting ring. The input end of the heating tube is electrically connected to the output end of the microcontroller. The heating tube is distributed in a wavy shape along the contour of the heat-conducting ring. The wavy heating tube can quickly heat the heat-conducting ring. The overflow hole can increase the contact area between the heat-conducting ring and the water.

[0007] Furthermore, the uniform heating mechanism also includes a ceramic tube and a temperature sensor. The ceramic tube is respectively disposed at the upper and lower ends inside the water bath cabinet, and the temperature sensor is uniformly disposed inside the ceramic tube. The temperature sensor is bidirectionally electrically connected to the microcontroller for monitoring water stability. The ceramic tube also ensures the sealing of the temperature sensor.

[0008] Furthermore, the uniform heating mechanism also includes a circulation component, which includes an electromagnetic three-way valve, a connecting pipe one, a connecting pipe two, and a connecting pipe three. An installation cavity is provided on the front side of the water bath cabinet. The electromagnetic three-way valve is located in the middle of the rear wall of the installation cavity. The input end of the electromagnetic three-way valve is electrically connected to the output end of the microcontroller. Connecting pipe one is located at the upper end of the installation cavity, and its rear end is connected to the interior of the water bath cabinet. Connecting pipe two is located on the upper right side of the installation cavity. Connecting pipe three is located at the upper and lower ends of the installation cavity, and its rear end is connected to the interior of the water bath cabinet. Each electromagnetic three-way valve has a connecting port one at its upper end and a connecting port two at its lower end. The front end of connecting pipe one is connected to connecting port one on the left side, the left end of connecting pipe two is connected to connecting port one on the right side, and the upper end of connecting pipe three is connected to connecting port two. Water inlet, drainage, and water circulation can be achieved through the electromagnetic three-way valve.

[0009] Furthermore, the circulation assembly also includes a propeller and a circulation pump. The propeller is rotatably connected to the middle of the bottom wall of the water bath cabinet. The rear end of the connecting pipe three is installed in conjunction with the propeller. The circulation pump is located in the middle of the outer surface of the connecting pipe three. The input end of the circulation pump is electrically connected to the output end of the microcontroller, providing a basis for the circulation of water and the rotation of the propeller.

[0010] Furthermore, it also includes a microcontroller, which is located at the upper left front end of the water bath cabinet. The input terminal of the microcontroller is electrically connected to an external power supply to provide control for the constant temperature water bath equipment.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This constant temperature water bath device for PGI experiments has the following advantages: 1. The internal gear ring is rotated by gear two, and the fixed plate is deflected by the meshing of gear one with the internal gear ring. Combined with the buoyancy of water, the test vessel can be quickly fixed, avoiding the vessel from swaying from side to side.

[0012] 2. By cooperating with a circulating pump, a solenoid three-way valve, and three connecting pipes, water can circulate inside the water bath cabinet. The water flow drives the propeller to rotate, allowing the water flowing out of the connecting pipes to quickly and evenly mix with the surrounding water. The corrugated heating pipe, heat-conducting ring, and overflow hole heating, combined with water circulation and temperature sensor monitoring, can quickly and evenly heat the water, keeping it at a constant temperature. This avoids the need for multiple heating elements and reduces energy consumption. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the water bath cabinet of this utility model; Figure 3 This is a schematic diagram of the fixing mechanism of this utility model; Figure 4 This is a schematic diagram of the structure of the heat-conducting ring of this utility model; Figure 5 This is a schematic diagram of the structure of the circulation component of this utility model.

[0014] In the diagram: 1 Water bath cabinet, 2 Cabinet door, 3 Compartment, 4 Fixing mechanism, 41 Internal gear ring, 42 Gear 1, 43 Fixing plate, 44 Gear 2, 45 Gear teeth, 46 Knob, 5 Uniform heating mechanism, 51 Heat conducting ring, 52 Overflow hole, 53 Heating tube, 54 Ceramic tube, 55 Temperature sensor, 56 Circulation assembly, 561 Solenoid three-way valve, 562 Connecting pipe 1, 563 Connecting pipe 2, 564 Connecting pipe 3, 565 Propeller, 566 Circulation pump, 6 Microcontroller. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-5 This embodiment provides a technical solution: a constant temperature water bath device for PGI experiments, including a water bath cabinet 1, a fixing mechanism 4 and a uniform heating mechanism 5; Water bath cabinet 1: It has a cabinet door 2 on the front side. The cabinet door 2 is hinged to the front side of the water bath cabinet 1 to facilitate the maintenance of the internal equipment. The material of the water bath cabinet 1 can be composite material insulation board to maintain the water temperature. The upper middle part of the interior of the water bath cabinet 1 has a compartment 3. The compartment 3 is cylindrical in shape. The surface of the wall of the compartment 3 has evenly distributed flow holes for water flow. It also includes a microcontroller 6. The microcontroller 6 is set at the upper left front end of the water bath cabinet 1. The input end of the microcontroller 6 is electrically connected to an external power supply to provide control effect for the constant temperature water bath equipment. Fixing mechanism 4 includes an internal gear ring 41, gear 42, and fixing plate 43. A slide groove is provided in the middle of the upper part of the interior of the water bath cabinet 1. The internal gear ring 41 is slidably connected to the interior of the slide groove. Gear 42 is set at the four corners of the interior of the slide groove. The four gears 42 are arranged in a cross shape. Gear 42 is meshed with the internal gear ring 41. Fixing plate 43 is set at the upper end of gear 42 to provide a foundation for fixing the test dish. Fixing mechanism 4 also includes gear 44, teeth 45, and knob 46. Gear 44 is rotatably connected to the middle of the right side of the interior of the slide groove. Teeth 45 are evenly arranged on the right side of the outer surface of the internal gear ring 41. The whole of teeth 45 meshes with gear 44. Knob 46 is set at the upper end of gear 44 to provide a driving effect for fixing the test dish. Uniform heating mechanism 5: It is located inside the front of the water bath 1. The uniform heating mechanism 5 includes a heat-conducting ring 51, an overflow hole 52, and a heating tube 53. The heat-conducting ring 51 is located in the middle of the interior of the water bath 1. The heat-conducting ring 51 is formed by two U-shaped rings. The material of the heat-conducting ring 51 can be copper, which has high thermal conductivity. The inner wall of the heat-conducting ring 51 is attached to the lower end of the outer surface of the compartment 3, and the outer surface of the heat-conducting ring 51 is attached to the middle of the inner wall of the water bath 1. The overflow holes 52 are evenly distributed on the outer surface of the heat-conducting ring 51. The inner diameter of the overflow hole 52 is larger than the inner diameter of the flow hole. When the overflow hole 52 circulates, the resistance at the overflow hole 52 is small, and the water tends to circulate upward from the overflow hole 52. The heating tube 53 is located in the middle of the interior of the heat-conducting ring 51. The input end of the heating tube 53 is located in the middle of the interior of the heat-conducting ring 51. All components are electrically connected to the output of the microcontroller 6. The heating tubes 53 are distributed in a wavy shape along the contour of the heat-conducting ring 51, increasing the length of the tube and the contact area with the heat-conducting ring 51, allowing for faster heating of the heat-conducting ring 51. The wavy heating tubes 53 can quickly heat the heat-conducting ring 51. The overflow hole 52 can increase the contact area between the heat-conducting ring 51 and the water. The uniform heating mechanism 5 also includes a ceramic tube 54 and a temperature sensor 55. The ceramic tubes 54 are respectively set at the upper and lower ends inside the water bath cabinet 1. The temperature sensors 55 are evenly arranged inside the ceramic tubes 54. The temperature sensors 55 are bidirectionally electrically connected to the microcontroller 6 for monitoring water stability. The ceramic tubes 54 also ensure the sealing of the temperature sensors 55. The uniform heating mechanism 5 also includes a circulation component 56 for circulating water. The ring assembly 56 includes an electromagnetic three-way valve 561, a first connecting pipe 562, a second connecting pipe 563, and a third connecting pipe 564. An installation cavity is provided on the front side of the interior of the water bath cabinet 1. The electromagnetic three-way valve 561 is located in the middle of the rear wall of the installation cavity. The input end of the electromagnetic three-way valve 561 is electrically connected to the output end of the microcontroller 6. When the electromagnetic three-way valve 561 is energized, the electromagnet generates magnetic force to push the valve core to move, changing the channel connection state and switching the direction of water flow. After de-energization, it is reset by a spring. The first connecting pipe 562 is located at the upper end of the interior of the installation cavity, and its rear end is connected to the interior of the water bath cabinet 1. The second connecting pipe 563 is located on the upper right side of the interior of the installation cavity. The third connecting pipe 564 is located at the upper and lower ends of the interior of the installation cavity. The rear end is connected to the interior of the water bath cabinet 1. Each electromagnetic three-way valve 561 has a connection port 1 at its upper end and a connection port 2 at its lower end. The front end of connecting pipe 1 562 is connected to connection port 1 on the left side, the left end of connecting pipe 2 563 is connected to connection port 1 on the right side, and the upper end of connecting pipe 3 564 is connected to connection port 2. Water inlet, drainage, and water circulation can be achieved through the electromagnetic three-way valves 561. The circulation assembly 56 also includes a propeller 565 and a circulation pump 566. The propeller 565 is rotatably connected to the middle of the bottom wall of the water bath cabinet 1. The rear end of connecting pipe 3 564 is fitted with the propeller 565, and the edge of the right blade of the propeller 565 is aligned with the rear end of the connecting pipe 3 564. The propeller 565 can rotate through the water flow.A circulating pump 566 is positioned in the middle of the outer surface of connecting pipe 564. The input of the circulating pump 566 is electrically connected to the output of the microcontroller 6, providing the basis for water circulation and propeller rotation. It can quickly fix the testing dish and, through the circulating pump 566 and multiple connecting pipes, circulate water within the water bath 1. The water flow drives the propeller 565 to rotate. Combined with the heat conduction of a single heating element 53 and heat-conducting ring 51, the water can be heated rapidly, ensuring uniform water temperature, achieving a constant temperature effect, and reducing energy consumption.

[0017] The working principle of the constant temperature water bath device for PGI experiments provided by this utility model is as follows: When using the constant temperature water bath device for PGI experiments, the external water inlet pipe is connected to the right end of the connecting pipe 2 563. The microcontroller 6 controls the solenoid three-way valve 561 to work, so that the connecting pipe 2 563 and the connecting pipe 3 564 form a passage. The microcontroller 6 controls the circulation pump 566 to work. Water is pumped into the water bath 1 from the rear end of the connecting pipe 3 564 through the passage formed by the connecting pipe 2 563 and the connecting pipe 3 564 by the circulation pump 566. When the water in the water bath 1 reaches a suitable height, the microcontroller 6 controls the solenoid three-way valve 561 to form a passage between the connecting pipe 1 562 and the connecting pipe 3 564. With the operation of the circulation pump 566, water is drawn from the rear end of the connecting pipe 1 562. The water enters through connecting pipe 562 and connecting pipe 564, forming a passage. From the rear end of connecting pipe 564, the water is pumped by circulation pump 566 into the lower end of the water bath 1, forming a circulation. The water flow generated at the rear end of connecting pipe 564 continuously impacts the blades of propeller 565, causing propeller 565 to rotate. The rotating propeller 565 continuously agitates the surrounding water, allowing the water flowing out of connecting pipe 564 to quickly and evenly mix with the surrounding water. Simultaneously, microcontroller 6 controls the heating tube 53 and temperature sensor 55. The wavy heating tube 53 quickly heats the heat-conducting ring 51. Because the inner wall of the heat-conducting ring 51 is in contact with the lower end of the outer surface of the compartment 3, and the outer surface of the heat-conducting ring 51 is in contact with the middle of the inner wall of the water bath 1, the heat-conducting ring 51... The interior of unit 1 is divided into upper and lower sections. Water in the upper section is drawn away by connecting pipe 562 and discharged into the lower section. During this process, the water is heated as it passes through the heat-conducting ring 51 and overflow hole 52. The overflow hole 52 increases the contact area between the heat-conducting ring 51 and the water, allowing for faster heating. Simultaneously, the water in the lower section is detected by the temperature sensor 55 inside the lower ceramic tube 54, and the water in the upper section is detected by the temperature sensor 55 inside the upper ceramic tube 54, allowing for more accurate temperature determination. When the water temperature drops below a set value, the temperature sensor 55 quickly sends an electrical signal to the microcontroller 6, which then rapidly increases the power of the heating element 53 to change the water temperature. Once the water temperature stabilizes, the testing dish is placed into the compartment. Inside compartment 3, to prevent the detector dish from swaying left and right, it needs to be fixed. Press the lower end of the detector dish into the water so that the upper end of the detector dish is lower than the lower end of the fixing plate 43. Turn the knob 46 to drive the gear 2 44 to rotate, and the internal gear ring 41 will rotate accordingly. Since the gear 1 42 is meshed with the internal gear ring 41, the gear 1 42 and the fixing plate 43 will also rotate as the internal gear ring 41 rotates. The side of the four fixing plates 43 away from the gear 1 42 will deflect towards the center of compartment 3. When the fixing plate 43 rotates 90 degrees, release the detector dish. The detector dish will move upward under the action of buoyancy until the upper end of the detector dish is in contact with the lower end of the fixing plate 43. The buoyancy of the water, combined with the limiting effect of the fixing plate 43, can quickly fix the detector dish.

[0018] It is worth noting that the microcontroller 6 disclosed in the above embodiments is an STM8S003F3P6 microcontroller, the heating tube 53 is a YHYJ heating tube, the temperature sensor 55 is a TN7511 temperature sensor, the electromagnetic three-way valve 561 is a HYZF2-15 electromagnetic three-way valve, and the circulation pump 566 is a GY-100PX circulation pump. The microcontroller 6 controls the operation of the heating tube 53, the temperature sensor 55, the electromagnetic three-way valve 561, and the circulation pump 566 using methods commonly used in the prior art.

[0019] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A thermostatic water bath apparatus for PGI experiments, characterized in that: It includes a water bath cabinet (1), a fixing mechanism (4), and a uniform heating mechanism (5); Water bath cabinet (1): It has a cabinet door (2) on the front side and a compartment (3) in the upper middle part of the interior of the water bath cabinet (1); Fixing mechanism (4): It includes an internal gear ring (41), gear 1 (42) and fixing plate (43). The upper part of the water bath cabinet (1) is provided with a sliding groove. The internal gear ring (41) is slidably connected to the inside of the sliding groove. Gear 1 (42) is set at the four corners inside the sliding groove. The four gear 1 (42) are arranged in a cross shape. Gear 1 (42) is meshed with the internal gear ring (41). Fixing plate (43) is set at the upper end of gear 1 (42). Uniform heating mechanism (5): It is located on the front side inside the water bath cabinet (1).

2. The constant temperature water bath device for PGI experiments according to claim 1, characterized in that: It also includes a microcontroller (6), which is located at the upper left front end of the water bath cabinet (1), and the input terminal of the microcontroller (6) is electrically connected to an external power supply.

3. The constant temperature water bath device for PGI experiments according to claim 1, characterized in that: The fixing mechanism (4) also includes a second gear (44), teeth (45) and a knob (46). The second gear (44) is rotatably connected to the middle of the right side of the inner groove. The teeth (45) are evenly arranged on the right side of the outer surface of the inner tooth ring (41). The teeth (45) form a whole that meshes with the second gear (44). The knob (46) is located at the upper end of the second gear (44).

4. The constant temperature water bath device for PGI experiments according to claim 2, characterized in that: The uniform heating mechanism (5) includes a heat-conducting ring (51), an overflow hole (52), and a heating tube (53). The heat-conducting ring (51) is located in the middle of the interior of the water bath cabinet (1). The inner wall of the heat-conducting ring (51) is attached to the lower end of the outer surface of the compartment (3). The outer surface of the heat-conducting ring (51) is attached to the middle of the inner wall of the water bath cabinet (1). The overflow hole (52) is evenly opened on the outer surface of the heat-conducting ring (51). The heating tube (53) is located in the middle of the interior of the heat-conducting ring (51). The input end of the heating tube (53) is electrically connected to the output end of the microcontroller (6). The heating tube (53) is distributed in a wave shape along the contour of the heat-conducting ring (51).

5. The constant temperature water bath device for PGI experiments according to claim 2, characterized in that: The uniform heating mechanism (5) also includes a ceramic tube (54) and a temperature sensor (55). The ceramic tube (54) is respectively set at the upper and lower ends inside the water bath cabinet (1). The temperature sensor (55) is uniformly set inside the ceramic tube (54). The temperature sensor (55) is bidirectionally electrically connected to the microcontroller (6).

6. The constant temperature water bath device for PGI experiments according to claim 2, characterized in that: The uniform heating mechanism (5) further includes a circulation component (56), which includes an electromagnetic three-way valve (561), a connecting pipe one (562), a connecting pipe two (563), and a connecting pipe three (564). An installation cavity is provided on the front side of the interior of the water bath cabinet (1). The electromagnetic three-way valve (561) is located in the middle of the rear wall of the installation cavity. The input end of the electromagnetic three-way valve (561) is electrically connected to the output end of the microcontroller (6). The connecting pipe one (562) is located at the upper end of the interior of the installation cavity, and the rear ends of the connecting pipe one (562) are connected to the water bath cabinet (1). The internal connections are as follows: connecting pipe 2 (563) is located on the upper right side of the installation cavity, connecting pipe 3 (564) is located on the upper and lower ends of the installation cavity, the rear end of connecting pipe 3 (564) is connected to the interior of the water bath cabinet (1), the upper end of the electromagnetic three-way valve (561) is provided with connection port 1, the lower end of the electromagnetic three-way valve (561) is provided with connection port 2, the front end of connecting pipe 1 (562) is connected to connection port 1 on the left side, the left end of connecting pipe 2 (563) is connected to connection port 1 on the right side, and the upper end of connecting pipe 3 (564) is connected to connection port 2.

7. The constant temperature water bath apparatus for PGI experiments according to claim 6, characterized in that: The circulation component (56) also includes a propeller (565) and a circulation pump (566). The propeller (565) is rotatably connected to the middle of the bottom wall of the water bath cabinet (1). The rear end of the connecting pipe three (564) is installed in conjunction with the propeller (565). The circulation pump (566) is located in the middle of the outer surface of the connecting pipe three (564). The input end of the circulation pump (566) is electrically connected to the output end of the microcontroller (6).

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