Anti-freezing densimeter
By incorporating a heating mechanism and a temperature sensor into the hydrometer to control the liquid temperature, the problem of hydrometer freezing was solved, thus achieving accurate measurement results and flexible adaptability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-03-24
AI Technical Summary
Existing densitometers lack antifreeze functionality, which can lead to increased sample viscosity or phase changes, affecting the accuracy of measurement results.
An antifreeze densitometer was designed. It heats the liquid around the detection head through a heating mechanism, uses a sealed shell to prevent the liquid from directly contacting the heating element, and controls the operation of the heating element through a temperature sensor to ensure that the liquid temperature is within a suitable range to prevent freezing. At the same time, different sizes of mounting plates can be replaced to adapt to different needs.
It effectively prevents liquid freezing, ensuring the accuracy of measurement results, and its flexible installation structure adapts to samples of different sizes, expanding the equipment's application range.
Smart Images

Figure CN121728616A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of instruments and meters, in particular to a freeze-proof densimeter. BACKGROUND
[0002] The technical field of instruments and meters focuses on the design, development, manufacturing, and application of various devices and technologies for measuring, monitoring, controlling physical quantities, chemical properties, and other characteristic parameters. This field encompasses a wide range of applications, from common household items such as thermometers and blood pressure monitors to industrial automation control systems, and high-precision measuring instruments such as spectrometers and mass spectrometers used in scientific research. It combines knowledge from multiple disciplines, including mechanical engineering, electronic engineering, computer science, sensor technology, and automatic control theory, constantly driving technological innovation and development in various industries, ensuring product quality, improving production efficiency, ensuring safe operation, and playing an indispensable role in environmental protection, medical health, aerospace, and other key areas.
[0003] A densimeter is an instrument specifically designed to accurately measure the density of liquids or gases by converting the density of a substance into a readable numerical value or signal through different physical principles, such as vibration frequency, buoyancy, or refractive index changes. It is widely used in industries such as petroleum and chemical engineering, food processing, pharmaceuticals, and scientific research and education to ensure product quality, monitor production processes, or conduct scientific research. Densimeters come in various types, including traditional glass float type, modern digital electronic type, and portable online continuous monitoring type, each providing efficient density measurement solutions for specific application needs.
[0004] The densimeters in the prior art generally do not have a freeze-proof function, and the lack of freeze-proof protection may lead to an increase in sample viscosity or a change in phase, thereby affecting the accuracy of the measurement results. SUMMARY
[0005] The purpose of the present application is to provide a freeze-proof densimeter to solve the problems raised in the background.
[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a freeze-proof densimeter, comprising a display mechanism, a mounting mechanism fixedly installed at the bottom of the display mechanism, a mounting disc fixedly installed inside the mounting mechanism, a detection head fixedly connected to the bottom of the mounting mechanism, a heating mechanism fixedly installed on the outer wall of the detection head, the heating mechanism comprising a control box fixedly installed on the outer wall of the detection head, a sealing shell fixedly installed at the bottom of the control box, a heating sheet fixedly installed inside the sealing shell, a heat-conducting block fixedly connected to the bottom of the heating sheet, a heating cage fixedly connected to the bottom of the heat-conducting block, and the heating cage being sleeved and installed on the outer wall of the detection head.
[0007] Preferably, one side of the control box is fixedly provided with a second temperature sensor.
[0008] Preferably, the bottom of the control box is fixedly provided with a first temperature sensor, and the first temperature sensor is arranged inside the heat-conducting block and penetrates the heating sheet.
[0009] Preferably, the display mechanism comprises a control head, one side of the control head is fixedly provided with a connecting head, and one side of the control head is fixedly provided with a display table.
[0010] Preferably, the mounting mechanism comprises a first mounting rod and a second mounting rod, the bottom of the first mounting rod is fixedly provided with a screw rod, the bottom of the screw rod is fixedly provided with an elastic contact, the top of the second mounting rod is fixedly provided with a mounting shaft, a mounting disc is movably arranged on the outer wall of the mounting shaft, and the screw rod is threadedly connected in the second mounting rod.
[0011] Preferably, the bottom of the first mounting rod and the bottom of the mounting shaft are both fixedly provided with a baffle.
[0012] Preferably, the inside of the mounting disc is fixedly provided with a plurality of limiting strips, the outer wall of the mounting shaft is provided with a plurality of limiting grooves, and the limiting grooves are slidably arranged in the limiting grooves.
[0013] Compared with the prior art, the anti-freezing density meter has the advantages that: 1. The control box is arranged to control the operation of the heating sheet, the sealing shell is arranged to prevent the liquid from directly contacting the heating sheet and the heat-conducting block, the heating sheet is arranged to heat the heat-conducting block, the heating sheet is arranged to conduct heat to the heating cage, and finally the heating cage is arranged to heat the liquid around the detection head, so that the liquid around the detection head is prevented from freezing; 2. The elastic contact is arranged to ensure the electrical connection between the first mounting rod and the second mounting rod, the screw rod and the second mounting rod are cooperated to flexibly disconnect the first mounting rod and the second mounting rod, the mounting disc is arranged on the mounting shaft, and the above-mentioned device can flexibly replace the mounting discs of different sizes by disconnecting the connection between the first mounting rod and the second mounting rod, so that the use range of the device is improved. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 The figure is a structural schematic view of the device; Figure 2 The figure is a structural schematic view of the heating mechanism; Figure 3 The figure is a structural schematic view of the display mechanism; Figure 4 The figure is a structural schematic view of the mounting mechanism.
[0015] In the figure: 1, display mechanism; 101, control head; 102, connecting head; 103, display table; 2, mounting mechanism; 201, first mounting rod; 202, screw rod; 203, elastic contact; 204, second mounting rod; 205, mounting shaft; 206, limiting groove; 207, baffle; 3, mounting disc; 4, detection head; 5, heating mechanism; 501, control box; 502, sealing shell; 503, heating sheet; 504, heat conducting block; 505, heating cage; 506, first temperature sensor; 507, second temperature sensor; 6, limiting strip. DETAILED DESCRIPTION
[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0017] Please refer to Figures 1-3 The present application provides a technical solution: a freeze-proof density meter, comprising a display mechanism 1, a mounting mechanism 2 fixedly installed at the bottom of the display mechanism 1, a mounting disc 3 fixedly installed inside the mounting mechanism 2, a detection head 4 fixedly connected to the bottom of the mounting mechanism 2, a heating mechanism 5 fixedly installed on the outer wall of the detection head 4, the heating mechanism 5 comprising a control box 501 fixedly installed on the outer wall of the detection head 4, a sealing shell 502 fixedly installed at the bottom of the control box 501, a heating sheet 503 fixedly installed inside the sealing shell 502, a heat conducting block 504 fixedly connected to the bottom of the heating sheet 503, a heating cage 505 fixedly connected to the bottom of the heat conducting block 504, the heating cage 505 being sleeved and installed on the outer wall of the detection head 4, a second temperature sensor 507 fixedly installed on one side of the control box 501, the second temperature sensor 507 being used to detect the temperature of the liquid around the detection head 4, and then the temperature data being used to control the operation of the heating sheet 503, so that the liquid is always kept within a suitable range, preventing the liquid temperature from being too high or too low to affect the detection data of the detection head 4, a first temperature sensor 506 fixedly installed at the bottom of the control box 501, the first temperature sensor 506 being installed inside the heat conducting block 504 through the heating sheet 503, the first temperature sensor 506 being used to detect the temperature of the heat conducting block 504, and the heating sheet 503 being turned off when the temperature of the heat conducting block 504 is too high, preventing the internal components of the heating mechanism 5 from being damaged due to high temperature, the display mechanism 1 comprising a control head 101, the control head 101 being fixedly installed on one side of a connecting head 102, the control head 101 being fixedly installed on one side of a display table 103, and the detection data being displayed on the display table 103 through the connecting head 102 connected to the power supply.
[0018] The specific implementation method is as follows: the operation of the heating element 503 is controlled by the control box 501, the sealing shell 502 prevents the liquid from directly contacting the heating element 503 and the heat-conducting block 504, the heating element 503 heats the heat-conducting block 504, and then the heating element 503 conducts the heat to the heating cage 505. Finally, the heating cage 505 heats the liquid around the detection head 4 to prevent the liquid around the detection head 4 from freezing.
[0019] Please see Figures 1-4 This invention provides a technical solution: a freeze-resistant densitometer, wherein the mounting mechanism 2 includes a first mounting rod 201 and a second mounting rod 204. A screw 202 is fixedly mounted at the bottom of the first mounting rod 201, and an elastic contact 203 is fixedly mounted at the bottom of the screw 202. A mounting shaft 205 is fixedly mounted at the top of the second mounting rod 204. A mounting disc 3 is movably mounted on the outer wall of the mounting shaft 205. The screw 202 is threadedly connected to the inside of the second mounting rod 204. Baffles 207 are fixedly mounted at the bottom of both the first mounting rod 201 and the bottom of the mounting shaft 205 to prevent vertical displacement on the outer wall of the mounting shaft 205. Several limiting strips 6 are fixedly mounted inside the mounting disc 3. Several limiting grooves 206 are formed on the outer wall of the mounting shaft 205. The limiting grooves 206 are slidably mounted inside the limiting grooves 206, and the cooperation between the limiting grooves 206 and the limiting strips 6 prevents the mounting disc 3 from rotating on the outer wall of the mounting shaft 205.
[0020] The specific implementation method is as follows: the elastic contact 203 ensures the electrical connection between the first mounting rod 201 and the second mounting rod 204; the screw 202 and the second mounting rod 204 cooperate to allow the connection between the first mounting rod 201 and the second mounting rod 204 to be flexibly disconnected; and the mounting plate 3 is installed through the mounting shaft 205. In summary, this device can flexibly replace mounting plates 3 of different sizes by disconnecting the connection between the first mounting rod 201 and the second mounting rod 204, thereby expanding the application range of the device.
[0021] Working principle: When using this antifreeze densitometer, the operation of the heating element 503 is controlled by the control box 501. The sealing shell 502 prevents the liquid from directly contacting the heating element 503 and the heat-conducting block 504. The heating element 503 heats the heat-conducting block 504, and then the heating element 503 conducts the heat to the heating cage 505. Finally, the heating cage 505 heats the liquid around the detection head 4 to prevent the liquid around the detection head 4 from freezing. The second temperature sensor 507 detects the temperature of the liquid around the detection head 4, and then controls the operation of the heating element 503 based on the temperature data to keep the liquid within a suitable range, preventing the liquid temperature from being too high or too low and affecting the detection data of the detection head 4. The first temperature sensor 506 detects the temperature of the heat-conducting block 504, and shuts off the heating element 503 when the temperature of the heat-conducting block 504 is too high, to prevent damage to the internal components of the heating mechanism 5 due to high temperature. The detection data is displayed on the display meter 103 through the external power supply connected to the connector 102. The elastic contact 203 ensures the electrical connection between the first mounting rod 201 and the second mounting rod 204. The screw 202 and the second mounting rod 204 cooperate to allow the connection between the first mounting rod 201 and the second mounting rod 204 to be flexibly disconnected. The mounting shaft 205 is used to install the mounting plate 3. In summary, this equipment can flexibly replace mounting plates 3 of different sizes by disconnecting the connection between the first mounting rod 201 and the second mounting rod 204, thereby expanding the scope of use of the equipment. The baffle 207 prevents vertical displacement on the outer wall of the mounting shaft 205, and the cooperation between the limiting groove 206 and the limiting strip 6 prevents the mounting plate 3 from rotating on the outer wall of the mounting shaft 205.
[0022] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A freeze-resistant hydrometer, comprising a display mechanism (1), a mounting mechanism (2) fixedly mounted on the bottom of the display mechanism (1), a mounting plate (3) fixedly mounted inside the mounting mechanism (2), a detection head (4) fixedly connected to the bottom of the mounting mechanism (2), and a heating mechanism (5) fixedly mounted on the outer wall of the detection head (4), characterized in that: The heating mechanism (5) includes a control box (501), which is fixedly installed on the outer wall of the detection head (4). A sealing shell (502) is fixedly installed at the bottom of the control box (501). A heating element (503) is fixedly installed inside the sealing shell (502). A heat-conducting block (504) is fixedly connected to the bottom of the heating element (503). A heating cage (505) is fixedly connected to the bottom of the heat-conducting block (504). The heating cage (505) is sleeved and installed on the outer wall of the detection head (4).
2. The antifreeze hydrometer according to claim 1, characterized in that, A second temperature sensor (507) is fixedly installed on one side of the control box (501).
3. The antifreeze hydrometer according to claim 1, characterized in that, The bottom of the control box (501) is fixedly installed with a first temperature sensor (506), which is installed inside the heat-conducting block (504) through the heating element (503).
4. The antifreeze hydrometer according to claim 1, characterized in that, The display mechanism (1) includes a control head (101), a connector (102) is fixedly installed on one side of the control head (101), and a display meter (103) is fixedly installed on one side of the control head (101).
5. The antifreeze hydrometer according to claim 1, characterized in that, The mounting mechanism (2) includes a first mounting rod (201) and a second mounting rod (204). A screw (202) is fixedly mounted on the bottom of the first mounting rod (201), and an elastic contact (203) is fixedly mounted on the bottom of the screw (202). A mounting shaft (205) is fixedly mounted on the top of the second mounting rod (204). The mounting disc (3) is movably mounted on the outer wall of the mounting shaft (205), and the screw (202) is threadedly connected to the inside of the second mounting rod (204).
6. The antifreeze hydrometer according to claim 5, characterized in that, A baffle (207) is fixedly installed at the bottom of the first mounting rod (201) and the bottom of the mounting shaft (205).
7. The antifreeze hydrometer according to claim 5, characterized in that, The mounting plate (3) has several limiting strips (6) fixedly installed inside, and the outer wall of the mounting shaft (205) has several limiting grooves (206) which are slidably installed inside the limiting grooves (206).