Mechanical liquid level device

Abstract

The utility model discloses a mechanical liquid level device which comprises a storage tank, an installation opening is formed in the storage tank, and a guide cylinder is installed in the installation opening. A guide wheel assembly is arranged at the top of the storage tank and comprises at least one guide wheel; the floater is located in the guide cylinder, and the buoyancy of liquid in the storage tank borne by the floater is larger than or equal to the gravity of the floater. According to the device, the guide wheel assembly is installed on the storage tank, the floater and the weight are placed at the two ends of the guide wheel assembly through the pull rope, when liquid is added, the floater moves up and down along an inner hole of the stainless steel pipe under the communicating vessel principle, and the soft rope moves up and down on the outer wall through rotation of the guide wheel under the pulling force of the weight; the height of the liquid in the tank can be determined through the height of the position indicated by the scale, the accuracy is high, and the floater moves in the guide cylinder and is not prone to turning over.

Description

Technical Field

[0001] This utility model relates to the field of liquid level gauge technology, specifically to a mechanical liquid level device. Background Technology

[0002] Mechanical level gauges, radar level gauges, or ultrasonic level gauges are commonly used to measure the liquid level in storage tanks. However, using radar level gauges and ultrasonic level gauges to measure the liquid level in storage tanks has problems such as large measurement errors, easy damage when the liquid contains vapor, and inaccurate measurement data.

[0003] A float level gauge is a common type of mechanical level gauge. It consists of a float, a line, a load, and a pulley. The float floats on the liquid surface, and its upper end is connected to the line. The line is connected to the load via the pulley. When the liquid level changes, the load will also rise or fall by the same amount. When using a float level gauge to measure the liquid level in a storage tank, the float is easily affected by the buoyancy of the liquid, causing it to easily flip over during the measurement process. This results in poor reliability and inaccurate measurement results. Utility Model Content

[0004] This invention provides a mechanical liquid level device, which aims to solve the problems of poor reliability and inaccurate measurement results when using existing float level gauges to measure the liquid level in storage tanks.

[0005] The technical solution provided by this utility model is as follows:

[0006] A mechanical liquid level device includes a storage tank, the storage tank having an installation port, a guide cylinder being installed inside the installation port, and the guide cylinder extending vertically from the installation port into the interior of the storage tank;

[0007] The top of the storage tank is provided with a guide wheel assembly, which includes at least one guide wheel;

[0008] The guide wheel assembly has a weight and a float connected at both ends by a pull rope. The float is located inside the guide cylinder, and the buoyancy of the liquid in the storage tank on the float is greater than or equal to its own weight.

[0009] Furthermore, the guide cylinder is made of stainless steel.

[0010] The diameter of the mounting port is 1 to 1.1 times the diameter of the guide cylinder.

[0011] Furthermore, the float has a cylindrical structure;

[0012] The diameter of the guide tube is 20-40 mm larger than the diameter of the float.

[0013] Furthermore, there is a gap between the bottom of the guide tube and the bottom of the storage tank, and the gap exceeds the height of the float.

[0014] Furthermore, the guide wheel assembly includes two identical guide wheels with their centers at the same horizontal position. The tangent of the guide wheel closer to the weight in the vertical direction coincides with the pull rope connecting the weight, while the tangent of the other guide wheel in the vertical direction coincides with the pull rope connecting the float.

[0015] Furthermore, a scale is provided on the outer wall of the storage tank corresponding to the movement position of the weight.

[0016] Furthermore, a base plate is provided on the top of the storage tank corresponding to the position of the guide wheel, and the two guide wheels are respectively mounted on the base plate by support rods, and the two guide wheels are connected by a guide wheel center connecting rod.

[0017] Furthermore, each of the two support rods is connected to a guide rope connecting rod, and each of the two guide rope connecting rods is provided with a guide rope rod at its end, with the two ends of the pull rope passing through different guide rope rods.

[0018] Furthermore, the height of the support rod is the sum of half the diameter of the guide wheel and 1.3 times the height of the float;

[0019] The guide rod is a hollow cylindrical structure with a diameter of 20-25mm and a length of 30-50mm.

[0020] Furthermore, a lifting hole is provided at the top of the float;

[0021] The storage tank is provided with an inlet at the top, and an outlet and an overflow outlet are provided at the bottom and top of the side wall of the storage tank, respectively.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] This invention provides a mechanical liquid level device. A guide wheel assembly is installed on a storage tank. A soft rope and a float are securely tied together through a lifting hole. The float is installed inside a stainless steel tube. The soft rope passes sequentially through a guide rod and a guide wheel. When liquid is added, based on the principle of communicating vessels, the float moves up and down along the inner hole of the stainless steel tube. Under the tension of a weight, the soft rope moves up and down along the outer wall via the rotation of the guide wheel. The liquid level inside the tank can be determined by the height indicated by a scale, with high accuracy. The diameter of the float is 20mm-40mm smaller than the diameter of the stainless steel tube. The float is cylindrical, allowing it to float up and down within the stainless steel tube without overturning or being impacted by the liquid entering the tank. The stainless steel tube serves as a positioning and guiding element. The lower part of the stainless steel tube has a reserved height slightly greater than the float height to prevent easy removal and re-fixing of the float should the rope break. Attached Figure Description

[0024] Figure 1This is a cross-sectional structural diagram of the mechanical liquid level device in an embodiment of this utility model;

[0025] Figure 2 This is a top view of the mechanical liquid level device in an embodiment of this utility model.

[0026] The attached figures are labeled as follows:

[0027] 1-Weight, 2-Guide wheel, 3-Guide wheel center connecting rod, 4-Support rod, 5-Base plate, 6-Pull rope, 7-Guide rope rod, 8-Guide rope connecting rod, 9-Storage tank, 10-Stainless steel pipe, 11-Lifting hole, 12-Float, 13-Liquid inlet, 14-Overflow port, 15-Liquid outlet, 16-Installation port. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the detailed description of the embodiments of this application provided below with reference to the accompanying drawings is intended merely to illustrate selected embodiments of this application and is not intended to limit the scope of protection claimed by this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] It should be understood that in the description of the embodiments of this utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0031] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for mutual communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model according to the specific circumstances.

[0032] See Figure 1 This utility model provides a mechanical liquid level device, including a storage tank 9, an installation port 16 on the storage tank 9, a guide cylinder installed in the installation port 16, and the guide cylinder extending vertically from the installation port 16 into the interior of the storage tank 9.

[0033] The top of the storage tank 9 is provided with a guide wheel 2 assembly, which includes at least one guide wheel 2.

[0034] The guide wheel 2 assembly has a weight 1 and a float 12 connected to both ends by a pull rope 6. The float 12 is located inside the guide cylinder. The buoyancy of the liquid in the storage tank 9 on the float 12 is greater than or equal to its own weight, so that the float 12 can be suspended on the liquid surface.

[0035] The guide tube is a straight tube open at both ends. It forms a communicating vessel with the inside of the storage tank 9 through the bottom opening. The liquid level inside the guide tube is the same as the liquid level inside the storage tank 9.

[0036] Optionally, the guide tube is made of stainless steel tube 10.

[0037] The diameter of the mounting port 16 is 1 to 1.1 times the diameter of the guide cylinder.

[0038] In this embodiment, the diameter of the mounting port 16 is greater than 1-1.1 times the outer diameter of the float 12. The purpose is that when the float 12 is replaced, it can be taken out from the mounting port 16 without having to go into the tank to replace it.

[0039] Optionally, float 12 has a cylindrical structure.

[0040] The diameter of the guide tube is 20-40mm larger than the diameter of float 12.

[0041] Optionally, there is a gap between the bottom of the guide tube and the bottom of the storage tank 9, and the gap exceeds the height of the float 12.

[0042] The float 12 can be designed as a stainless steel float. The dimensions of the cylindrical float can be calculated based on the relationship between the buoyancy F and the gravity G of the stainless steel float. The buoyancy force on the float is not less than its own weight, thus determining the external dimensions of the stainless steel float. In this embodiment, the diameter of the float is 20mm-40mm smaller than the diameter of the stainless steel tube 10. The float 12 is designed as a cylinder, allowing it to float up and down inside the stainless steel tube 10 without overturning. It will not be impacted by the liquid entering the tank, preventing it from moving around inside. The stainless steel tube 10 serves as a positioning and guiding element. The lower part of the stainless steel tube 10 has a reserved height slightly greater than the height of the float 12 to facilitate the removal and re-fixing of the float 12 should the pull rope 6 of the float 12 break.

[0043] Optionally, the guide wheel 2 assembly includes two identical guide wheels 2, with the centers of the two guide wheels 2 at the same horizontal position. The tangent of the guide wheel 2 closer to the weight 1 in the vertical direction coincides with the pull rope 6 connecting the weight 1, and the tangent of the other guide wheel 2 in the vertical direction coincides with the pull rope 6 connecting the float 12.

[0044] Specifically, such as Figure 2 As shown, the left side of the left guide wheel 2 extends beyond the edge of the storage tank 9, allowing the pull rope 6 and the weight 1 to hang down naturally without obstruction. Similarly, the right end of the other guide wheel 2 extends beyond the left edge of the stainless steel tube 10, allowing the pull rope 6 and the float 12 to hang down naturally. The weight 1 and the float 12 maintain balance. As liquid is added to or flows out of the storage tank 9, the float 12 rises or falls, causing the weight 1 to rise or fall.

[0045] Optionally, a scale is provided on the outer wall of the storage tank 9 to indicate the movement position of the weight 1.

[0046] Optionally, a base plate 5 is provided on the top of the storage tank 9 at the position corresponding to the guide wheel 2. The two guide wheels 2 are respectively installed on the base plate 5 through support rods 4, and the two guide wheels 2 are connected by a guide wheel center connecting rod 3.

[0047] Optionally, each of the two support rods 4 is connected to a guide rope connecting rod 8, and each of the two guide rope connecting rods 8 is provided with a guide rope rod 7 at its end, with the two ends of the pull rope 6 passing through different guide rope rods 7.

[0048] Optionally, the height of the support rod 4 is the sum of half the diameter of the guide wheel 2 and 1.3 times the height of the float 12.

[0049] The guide rod 7 is a hollow cylindrical structure with a diameter of 20-25mm and a length of 30-50mm.

[0050] In this embodiment, the guide wheel center connecting rod 3 fixes the guide wheel 2 structure. The diameter of the guide wheel 2 is based on the user-selected finished wheel, and the specific size meets the requirement that the guide wheel diameter is less than twice the distance from the outer edge of the tank to the center line of the stainless steel tube 10. The height of the support rod 4 is, in principle, half the diameter of the guide wheel 2 + the height of the float 12 * 1.3 times. The guide rope rod 7, the guide rope connecting rod 8, the support rod 4, and the guide wheel center connecting rod 3 are welded together. The material can be a round tube with a diameter of 20-25 mm. The length of the guide rope connecting rod 8 is the radius of the guide wheel 2. The guide rope rod 7 has a hollow steel tube inside, and its length is generally selected as 3-5 cm, which is slightly larger than the guide rope connecting rod 8. The inner hole is larger than the diameter of the pull rope 6. The installation height of the guide rope rod 7 is greater than the height of the float 12, which prevents the pull rope 6 from coming out of the guide wheel groove. The pull rope 6 is generally made of soft plastic-coated steel wire rope and cannot be made of elastic material. Its length is twice the height of the storage tank 9.

[0051] Optionally, the top of the float 12 is provided with a lifting hole 11, and the right end of the pull rope 6 is connected to the float 12 through the lifting hole 11.

[0052] The storage tank 9 is provided with an inlet 13 at the top, and an outlet 15 and an overflow 14 are provided at the bottom and top of the side wall of the storage tank 9, respectively.

[0053] Working principle: The guide wheel assembly is installed on the storage tank. The soft rope and float are securely tied through the lifting hole. The float is installed inside the stainless steel tube. The soft rope passes through the guide rod and guide wheel in sequence. When liquid is added, under the principle of communicating vessels, the float moves up and down along the inner hole of the stainless steel tube. Under the tension of the weight, the soft rope moves up and down on the outer wall through the rotation of the guide wheel. The height of the liquid in the tank can be determined by the height indicated by the scale, which has a high degree of accuracy.

[0054] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1.A mechanical liquid level device, characterized in that: a storage tank is provided with a mounting hole, a guide cylinder is mounted in the mounting hole, and the guide cylinder extends vertically from the mounting hole to the inside of the storage tank; a guide wheel assembly is arranged on the top of the storage tank, and the guide wheel assembly comprises at least one guide wheel; a weight and a float are connected to the guide wheel assembly through a pull rope at both ends of the guide wheel assembly, the float is located in the guide cylinder, and the buoyancy of the float in the liquid in the storage tank is greater than or equal to the weight of the float itself. 2.The mechanical liquid level device according to claim 1, characterized in that: the guide cylinder is a stainless steel pipe; and the diameter of the mounting hole is 1-1.1 times the diameter of the guide cylinder. 3.The mechanical liquid level device according to claim 1, characterized in that: the float is a cylindrical structure; and the diameter of the guide cylinder is 20-40 mm larger than the diameter of the float. 4.The mechanical liquid level device according to claim 3, characterized in that: there is a gap between the bottom of the guide cylinder and the bottom of the storage tank, and the gap is greater than the height of the float. 5.The mechanical liquid level device according to any one of claims 1-4, characterized in that: the guide wheel assembly comprises two identical guide wheels, the centers of the two guide wheels are located at the same horizontal position, the tangent of the vertical direction of the guide wheel close to the weight coincides with the pull rope connected to the weight, and the tangent of the vertical direction of the other guide wheel coincides with the pull rope connected to the float. 6.The mechanical liquid level device according to claim 5, characterized in that: a scale is arranged on the outer wall of the storage tank corresponding to the moving position of the weight. 7.The mechanical liquid level device according to claim 5, characterized in that: a bottom plate is arranged on the top of the storage tank corresponding to the position of the guide wheels, the two guide wheels are respectively installed on the bottom plate through support rods, and the two guide wheels are connected through a guide wheel center connecting rod. 8.The mechanical liquid level device according to claim 7, characterized in that: guide rope connecting rods are respectively connected to the two support rods, and guide rope rods are respectively arranged at the ends of the two guide rope connecting rods, and the pull ropes pass through different guide rope rods at both ends. 9.The mechanical liquid level device according to claim 8, characterized in that: the height of the support rod is the sum of half the diameter of the guide wheel and 1.3 times the height of the float; the guide rope rod is a hollow cylindrical structure, the diameter of the guide rope rod is 20-25 mm, and the length of the guide rope rod is 30-50 mm. 10.The mechanical liquid level device according to claim 1 or 2, characterized in that: a lifting hole is arranged on the top of the float; a liquid inlet is arranged on the top of the storage tank, and a liquid outlet and an overflow outlet are respectively arranged below and above the side wall of the storage tank. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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