Fixed-type hydrometer measuring cylinder
By designing a closed, fixed hydrometer measuring cylinder, the problems of material spillage, time-consuming operation, and dust pollution were solved, achieving efficient and accurate specific gravity measurement, especially for pollution-free measurement of precision materials such as lubricating oil.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN EVERSUN TECH CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-19
AI Technical Summary
Existing hydrometers suffer from problems such as material spillage, time-consuming operation, dust contamination risk, and inaccurate measurement, especially when measuring precision materials such as lubricating oil.
A fixed hydrometer measuring cylinder was designed, which adopts a closed structure, including inner and outer cylinders and a protective cover. The inner cylinder is slightly higher than the outer cylinder to stabilize the liquid level. The feed pipe is directly connected to the production line, and the overflow is collected through the overflow discharge pipe. The discharge pipe adopts a zero dead angle ball valve design. Combined with stabilizing and protective components, it ensures the accuracy of measurement and prevents contamination.
It effectively avoids dust pollution, reduces material spillage and loss, shortens operation time, and improves measurement accuracy and repeatability, especially significantly improving the reliability of measurement data in the measurement of precision materials such as lubricating oil.
Smart Images

Figure CN224383045U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical measuring equipment technology, specifically a fixed hydrometer measuring cylinder. Background Technology
[0002] A hydrometer measuring tube is an instrument used to measure the density of liquids. Its working principle is based on Archimedes' principle and the equilibrium condition of buoyancy. A hydrometer usually consists of a sealed glass tube with a uniform thickness at one end and graduations on the inner wall. The graduations are uneven, with sparser graduations at the top and denser graduations at the bottom. The other end is slightly enlarged into a bubble shape, which contains small lead particles or mercury. This allows the glass tube to be vertically immersed to a sufficient depth in the liquid being tested and to float stably in the liquid.
[0003] Currently, many existing specific gravity measurements require manual sampling and transfer to a measuring cylinder, which can easily lead to material spillage, damage to the specific gravity meter, and time-consuming operation. At the same time, open measuring cylinders also pose a risk of dust contamination, which has a significant impact on precision materials such as lubricating oil. Therefore, a fixed specific gravity meter measuring cylinder is provided. Utility Model Content
[0004] The purpose of this utility model is to provide a fixed hydrometer measuring cylinder to solve the problems mentioned in the background art and overcome its technical defects.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a fixed hydrometer measuring cylinder, including a base, a measuring cylinder body provided on the outer surface of the base, a feeding assembly provided on the outer surface of the measuring cylinder body, a hydrometer body provided inside the measuring cylinder body, an overflow discharge pipe fixedly connected to the outer surface of the measuring cylinder body through the base, an overflow collection assembly provided on the outer surface of the base, a discharge assembly provided on the outer surface of the measuring cylinder body, a stabilizing assembly provided on the outer surface of the base, and a protective assembly provided on the outer surface of the measuring cylinder body.
[0006] As a further embodiment of this utility model: the measuring cylinder body includes an inner cylinder and an outer cylinder, the height of the inner cylinder is slightly higher than the height of the outer cylinder, and a set of auxiliary blocks are fixedly connected to the outer surface of the base.
[0007] As a further embodiment of this utility model: the feeding assembly includes a feeding pipe, the outer surface of which is fixedly connected to a feeding valve, the end of the feeding pipe away from the feeding valve passes through the outer cylinder and is fixedly connected to the outer surface of the inner cylinder, and the outer surface of the hydrometer body is in contact with the inner bottom wall of the inner cylinder.
[0008] As a further embodiment of this utility model: the overflow collection component includes a collection box body, a locking block is fixedly connected to the outer surface of the collection box body, and a locking groove is opened on the outer surface of the base, the size of the locking groove being adapted to the locking block.
[0009] As a further embodiment of this utility model: the discharge assembly includes a discharge pipe, the outer surface of which is fixedly connected to a discharge valve, and the end of the discharge pipe away from the discharge valve passes through the base and is fixedly connected to the outer surface of the inner cylinder.
[0010] As a further embodiment of this utility model: the stabilizing component includes a set of stabilizing pads, the outer surface of each stabilizing pad is fixedly connected to the outer surface of the base, and an adjusting leg is fixedly connected to the side of each stabilizing pad away from the base.
[0011] As a further improvement of this utility model: each of the adjustable legs is fixedly connected to a foot on the side away from the stabilizing pad, and a shock-absorbing pad is fixedly connected to the outer surface of each foot.
[0012] As a further embodiment of this utility model: the protective component includes a mounting hoop, the outer surface of the mounting hoop is fixedly connected to the outer surface of the outer cylinder, a connecting block is snapped onto the outer surface of the mounting hoop, and a transparent protective cover is fixedly connected to the outer surface of the connecting block.
[0013] Compared with existing technologies, the beneficial effects of this utility model include: This utility model, through a closed measurement system, with the cooperation of the inner cylinder, outer cylinder, and protective cover, completely avoids the risk of dust contamination inherent in traditional open measuring cylinders. Especially for materials requiring high cleanliness, such as lubricating oil, this design ensures that no external contaminants enter during the measurement process, significantly improving the accuracy of the measurement data. Furthermore, while traditional methods require transferring the sample to a measuring cylinder, this design achieves in-situ measurement by placing the hydrometer body directly at the bottom of the inner cylinder. The feed pipe can directly connect to the production pipeline, eliminating intermediate transfer steps and avoiding approximately 5-8% material spillage loss, while also reducing operation time. The device employs a double-cylinder nested structure, with the inner cylinder higher than the outer cylinder and an overflow discharge pipe ensuring a constant liquid level. The hydrometer body is placed directly at the bottom of the inner cylinder, and the design of the inner cylinder being slightly higher than the outer cylinder facilitates timely and accurate reading of the actual measurement value by the operator. Compared to traditional float-type measurements, it reduces reading errors caused by liquid level fluctuations, and improves measurement repeatability by more than 30%. Attached Figure Description
[0014] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:
[0015] Figure 1 The schematic diagram shows a front view of the structure according to one embodiment of the present invention;
[0016] Figure 2The schematic diagram shows a side view of the structure according to one embodiment of the present invention;
[0017] Figure 3 The schematic diagram shows a top view of the structure according to one embodiment of the present invention;
[0018] Figure 4 The illustration schematically shows a method proposed according to one embodiment of the present invention. Figure 2 A magnified structural diagram of part A in the middle;
[0019] The following are the labeling elements in the diagram: 1. Base; 101. Auxiliary block; 2. Stabilizing component; 201. Stabilizing pad; 202. Adjustable leg; 203. Foot; 3. Measuring cylinder body; 301. Inner cylinder; 302. Outer cylinder; 4. Feeding component; 401. Feeding pipe; 402. Feeding valve; 5. Protective component; 501. Mounting clamp; 502. Transparent protective cover; 503. Connecting block; 6. Discharge component; 601. Discharge pipe; 602. Discharge valve; 7. Overflow collection component; 701. Slot; 702. Slot; 703. Collection box body; 8. Hydrometer body; 9. Overflow discharge pipe. Detailed Implementation
[0020] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.
[0021] According to one embodiment of the present invention, in conjunction with the accompanying drawings... Figure 1-4 As shown.
[0022] A fixed hydrometer measuring cylinder includes a base 1, a measuring cylinder body 3 on the outer surface of the base 1, a feeding assembly 4 on the outer surface of the measuring cylinder body 3, and a hydrometer body 8 inside the measuring cylinder body 3. The measuring cylinder body 3 includes an inner cylinder 301 and an outer cylinder 302, with the height of the inner cylinder 301 slightly higher than that of the outer cylinder 302. A set of auxiliary blocks 101 are fixedly connected to the outer surface of the base 1. The feeding assembly 4 includes a feeding pipe 401, with a feeding valve 402 fixedly connected to the outer surface of the feeding pipe 401. One end of the feeding pipe 401 away from the feeding valve 402 passes through the outer cylinder 302 and is fixedly connected to the outer surface of the inner cylinder 301. The outer surface of the hydrometer body 8 is fitted against the inner bottom wall of the inner cylinder 301. The base 1 serves as an integral support platform and is made of cast iron. The measuring cylinder body 3 adopts a split design, including the inner cylinder... The inner cylinder 301 is 5-8mm higher than the outer cylinder 302, forming an overflow gradient. The auxiliary block 101 enhances the torsional strength of the base 1. The double-cylinder structure provides triple protection against leakage, vibration, and temperature interference. The slightly higher height of the inner cylinder 301 compared to the outer cylinder 302 facilitates timely and accurate reading of actual measurements. Compared to traditional float-type measurements, this reduces reading errors caused by liquid surface fluctuations, improving measurement repeatability by over 30%. The degree difference design ensures controllable overflow direction. The feed pipe 401 is installed at a 30° angle, and the feed valve 402 is equipped with a flow scale. The tilted feed reduces liquid impact, and the visual valve allows for precise volume control. The hydrometer body 8 has a measurement range of 0.650-1.850 g / cm³. 3 It can eliminate reading fluctuations in traditional float-type measurements, while the response time of direct contact measurement is less than 3 seconds.
[0023] In this embodiment, an overflow discharge pipe 9 penetrating the base 1 is fixedly connected to the outer surface of the measuring cylinder body 3. An overflow collection assembly 7 is provided on the outer surface of the base 1, and a discharge assembly 6 is provided on the outer surface of the measuring cylinder body 3. The overflow collection assembly 7 includes a collection box body 703, and a locking block 702 is fixedly connected to the outer surface of the collection box body 703. A locking groove 701 is opened on the outer surface of the base 1, and the size of the locking groove 701 is adapted to the locking block 702. The discharge assembly 6 includes a discharge pipe 601, and a discharge valve 602 is fixedly connected to the outer surface of the discharge pipe 601. The discharge pipe 601 is located away from the discharge valve 602. One end of the overflow discharge pipe 9 is fixedly connected to the outer surface of the inner cylinder 301 through the base 1. The overflow discharge pipe 9 is a Φ25mm stainless steel pipe with a wall thickness of 1.5mm. It adopts a 45° bevel design to improve discharge efficiency. The locking block 702 is equipped with a spring locking mechanism. At the same time, the collection box has a volume of 2L, so the overflow recovery rate is ≥99%, which is 40% higher than the traditional method. Moreover, the collection box can be disassembled and assembled with one hand. The inner wall of the discharge pipe 601 is mirror polished. The discharge valve 602 adopts a zero dead angle ball valve structure, which can keep the residual amount in the equipment <5ml. At the same time, the full-bore design can achieve a flow rate of 1.2m. 3 / h.
[0024] In this embodiment, a stabilizing component 2 is provided on the outer surface of the base 1, and a protective component 5 is provided on the outer surface of the measuring cylinder body 3. The stabilizing component 2 includes a set of stabilizing pads 201, the outer surface of each stabilizing pad 201 is fixedly connected to the outer surface of the base 1, an adjusting leg 202 is fixedly connected to the side of each stabilizing pad 201 away from the base 1, and a foot 203 is fixedly connected to the side of each adjusting leg 202 away from the stabilizing pad 201. A shock-absorbing pad is fixedly connected to the outer surface of each foot 203. The protective component 5 includes a mounting clamp 501, the outer surface of which is fixedly connected to the outer surface of the outer cylinder 302. The outer surface of the mounting clamp 501 is snapped with a connecting block 503, and the outer surface of the connecting block 503 is fixedly connected with a transparent protective cover 502. The stabilizing pad 201 is made of Shore hardness 60° rubber. The adjustable leg 202 has a thread stroke of 50mm. The foot 203 has a diameter of 80mm and anti-slip texture, which makes the shock absorption effect of the equipment reach 75%. At the same time, the horizontal adjustment accuracy is ±0.5° / m. The mounting clamp 501 adopts a quick-release design. The transparent protective cover 502 is 5mm thick and has a light transmittance of ≥92%, making the opening and closing time <5 seconds. At the same time, the impact resistance performance has passed IK08 certification.
[0025] Working principle: When using this equipment, the liquid to be tested is first injected through the feed pipe 401. The flow rate is controlled by the feed valve 402. The liquid enters the inner cylinder 301 to the preset height. Excess liquid flows into the collection box body 703 through the overflow discharge pipe 9. At the same time, the hydrometer body 8 is placed at the bottom of the inner cylinder 301. Taking advantage of the fact that the inner cylinder 301 is slightly higher than the outer cylinder 302, it is convenient for the staff to read the actual measurement value in a timely and accurate manner. The transparent protective cover 502 prevents dust contamination. Then, the discharge valve 602 is opened, and the liquid is discharged through the discharge pipe 601, completing the measurement cycle. Finally, the collection box can be quickly disassembled and the overflow can be cleaned by the cooperation of the locking block 702 and the locking groove 701. At the same time, the adjusting leg 202 adjusts the level of the equipment through the foot 203.
[0026] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.
Claims
1. A fixed-type pycnometer measuring cylinder, characterized by The device includes a base (1), a measuring cylinder body (3) on the outer surface of the base (1), a feeding assembly (4) on the outer surface of the measuring cylinder body (3), a hydrometer body (8) inside the measuring cylinder body (3), an overflow discharge pipe (9) that passes through the base (1) and is fixedly connected to the outer surface of the measuring cylinder body (3), an overflow collection assembly (7) on the outer surface of the base (1), a discharge assembly (6) on the outer surface of the measuring cylinder body (3), a stabilizing assembly (2) on the outer surface of the base (1), and a protective assembly (5) on the outer surface of the measuring cylinder body (3).
2. The fixed hydrometer measuring cylinder according to claim 1, characterized in that The measuring cylinder body (3) includes an inner cylinder (301) and an outer cylinder (302). The height of the inner cylinder (301) is slightly higher than the height of the outer cylinder (302). A set of auxiliary blocks (101) are fixedly connected to the outer surface of the base (1).
3. The fixed hydrometer measuring cylinder according to claim 1, characterized in that The feeding assembly (4) includes a feeding pipe (401), the outer surface of which is fixedly connected to a feeding valve (402). One end of the feeding pipe (401) away from the feeding valve (402) passes through the outer cylinder (302) and is fixedly connected to the outer surface of the inner cylinder (301). The outer surface of the hydrometer body (8) is in contact with the inner bottom wall of the inner cylinder (301).
4. The fixed hydrometer measuring cylinder according to claim 1, characterized in that The overflow collection assembly (7) includes a collection box body (703), and a card block (702) is fixedly connected to the outer surface of the collection box body (703). A card slot (701) is opened on the outer surface of the base (1), and the size of the card slot (701) is adapted to the card block (702).
5. The fixed hydrometer measuring cylinder according to claim 1, characterized in that The discharge assembly (6) includes a discharge pipe (601), the outer surface of which is fixedly connected to a discharge valve (602), and the end of the discharge pipe (601) away from the discharge valve (602) passes through the base (1) and is fixedly connected to the outer surface of the inner cylinder (301).
6. The fixed hydrometer measuring cylinder according to claim 1, characterized in that The stabilizing component (2) includes a set of stabilizing pads (201), the outer surface of each stabilizing pad (201) is fixedly connected to the outer surface of the base (1), and an adjusting leg (202) is fixedly connected to the side of each stabilizing pad (201) away from the base (1).
7. The fixed hydrometer measuring cylinder according to claim 6, characterized in that Each of the adjustable legs (202) is fixedly connected to a foot (203) on the side away from the stabilizing pad (201), and a shock-absorbing pad is fixedly connected to the outer surface of each foot (203).
8. The fixed hydrometer measuring cylinder according to claim 1, characterized in that The protective component (5) includes a mounting hoop (501), the outer surface of which is fixedly connected to the outer surface of the outer cylinder (302), a connecting block (503) is snapped onto the outer surface of the mounting hoop (501), and a transparent protective cover (502) is fixedly connected to the outer surface of the connecting block (503).