Mechanical device for weighing and displaying residual gas in portable liquefied petroleum gas cylinder

Abstract

The utility model discloses a mechanical device for weighing and displaying residual gas in a portable liquefied petroleum gas cylinder. The mechanical device comprises a net weight load centering device; the weighing platform is composed of an upper platform, a metal support used for supporting a lower ring of a liquefied petroleum gas cylinder, a dial with net weight load scales and a spring with a spring. According to the utility model, some elements of a mechanical simulation bathroom scale are replaced.

Description

TECHNICAL FIELD

[0001] The present utility model relates to the technical field of mechanical devices for weighing and displaying the remaining gas in portable liquefied petroleum gas cylinders (also known as glass bottles, bottles, gas cylinders), in particular to a mechanical device for weighing and displaying the remaining gas in portable liquefied petroleum gas cylinders. BACKGROUND

[0002] When filling different types of portable liquefied petroleum gas cylinders, electronic scales are used by filling plants to strictly control the filling; the filling amount is approximately 85% of the capacity of the portable gas cylinder; there are many ways to know the amount of liquefied petroleum gas remaining in the portable gas cylinder; however, the correct method to know the amount of liquefied petroleum gas is to weigh it, as the pressure inside the portable gas cylinder is almost constant in the liquid and gas phases; according to the applicant's research, electronic scales are not suitable for continuous measurement, and the applicant believes that the difficulties arising here can only be solved by mechanical scales or balances; however, when using the mechanical scales practiced by the applicant, the diameter of the portable cylinder makes the dial invisible; another disadvantage that arises when using mechanical scales is that portable liquefied petroleum gas steel cylinders have different tares, so the gross weight of each loaded portable gas cylinder is also different; based on the above reasons, the applicant can say that there is no solution that completely satisfies the user; in order to obtain the utility model discussed in this document, the applicant started from the concept of spring scales (invented by Richard Salter in 1838, which have been produced and sold in large quantities since then), and the applicant made modifications to the spring scales to achieve the sought purpose. SUMMARY

[0003] In view of the above, the purpose of the present utility model is to allow the user to intuitively obtain information on the amount of liquefied petroleum gas remaining in the portable steel cylinder at any time and in any place, such as at home or in a commercial establishment.

[0004] For the user, it is convenient that he will be able to have a spare liquefied petroleum gas tank or replace it during use, thus avoiding untimely and uncomfortable situations.

[0005] To achieve the above-mentioned purposes, the utility model adopts the following technical solutions:

[0006] The mechanical device for weighing and displaying the remaining gas in a portable liquefied petroleum gas cylinder is characterized by comprising:

[0007] The net weight load centering device is composed of a centering gear, a center screw, a nut, and an elastic component with a spring;

[0008] The weighing platform comprises a three-dimensional triangular metal support with an additional angle, which is attached to three support angles and two half-parallel plates, which are attached to the upper platform by fixed rivets;

[0009] Net weight scale.

[0010] The utility model discloses the beneficial effect that:

[0011] The utility model discloses a new design is introduced to analog mechanical bathroom scale, and its advantage lies in being able to use it to weigh and display the remaining gas volume of portable liquefied petroleum gas bottle, whether these gas bottles are made of steel, aluminum or resin, and the naming of this new design analog mechanical bathroom scale is mechanical device for weighing and displaying the remaining gas in portable liquefied petroleum gas bottle. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the top view of mechanical device for weighing and displaying the remaining gas in portable liquefied petroleum gas bottle related to the utility model;

[0013] Figure 2 It is the side perspective view of metal support for supporting the lower ring of portable liquefied petroleum gas bottle related to the utility model;

[0014] Figure 3 It is the top view of metal support for supporting the lower ring of portable liquefied petroleum gas bottle related to the utility model;

[0015] Figure 4 It is the front view of portable liquefied petroleum gas bottle lower ring metal support related to the utility model;

[0016] Figure 5 It is the rear view of portable liquefied petroleum gas bottle lower ring metal support related to the utility model;

[0017] Figure 6 It is the bottom view of metal support for supporting the lower ring of portable liquefied petroleum gas bottle related to the utility model;

[0018] Figure 7 It is one side view of metal support for supporting the lower ring of portable liquefied petroleum gas bottle related to the utility model;

[0019] Figure 8 It is another side view of metal support for supporting the lower ring of portable liquefied petroleum gas bottle related to the utility model;

[0020] Figure 9 It is the side view of mechanical device for weighing and displaying the remaining gas in portable liquefied petroleum gas bottle related to the utility model;

[0021] Figure 10 It is the front view of mechanical device for weighing and displaying the remaining gas in portable liquefied petroleum gas bottle related to the utility model;

[0022] Figure 11 isometric view of the mechanical device for weighing and displaying the remaining gas in the portable liquefied petroleum gas cylinder according to the present application;

[0023] Figure 12 isometric view of the mechanical device for weighing and displaying the remaining gas in the portable liquefied petroleum gas cylinder according to the present application;

[0024] Figure 13 isometric view of the mechanical device for weighing and displaying the remaining gas in the portable liquefied petroleum gas cylinder according to the present application;

[0025] Figure 14 isometric view of the mechanical device for weighing and displaying the remaining gas in the portable liquefied petroleum gas cylinder according to the present application;

[0026] Figure 15 isometric view of the mechanical device for weighing and displaying the remaining gas in the portable liquefied petroleum gas cylinder according to the present application;

[0027] Figure 16A isometric view of the mechanical device for weighing and displaying the remaining gas in the portable liquefied petroleum gas cylinder according to the present application;

[0028] Figure 16B isometric view of the mechanical device for weighing and displaying the remaining gas in the portable liquefied petroleum gas cylinder according to the present application;

[0029] Figure 17 isometric view of the mechanical device for weighing and displaying the remaining gas in the portable liquefied petroleum gas cylinder according to the present application;

[0030] Figure 18 isometric view of the mechanical device for weighing and displaying the remaining gas in the portable liquefied petroleum gas cylinder according to the present application; DETAILED DESCRIPTION

[0031] Example 1

[0032] As shown in the drawings: Figures 1-18

[0033] isometric view of the mechanical device for weighing and displaying the remaining gas in the portable liquefied petroleum gas cylinder according to the present application; Figure 1

[0034] isometric view of the mechanical device for weighing and displaying the remaining gas in the portable liquefied petroleum gas cylinder according to the present application; Figure 2Side view of the metal support for supporting the lower ring of portable liquefied petroleum gas cylinder, where the metal support, the rod 4 of three-dimensional triangular structure, the supporting angle 3 of the lower ring of portable liquefied petroleum gas cylinder, the dial 1 with "net weight" load scale, the plate 2, the additional rod 5 of the weighing platform can be seen;

[0035] Figure 3 Top view of the metal support for supporting the lower ring of portable liquefied petroleum gas cylinder, where the metal support, the rod 4 of three-dimensional triangular structure, the supporting angle 3 of the lower ring of portable liquefied petroleum gas cylinder, the dial 1 with "net weight" load scale, the plate 2, the additional rod 5 of the weighing platform can be seen;

[0036] Figure 4 Front view of the metal support for supporting the lower ring of portable liquefied petroleum gas cylinder, where the metal support, the rod 4 of three-dimensional triangular structure, the supporting angle 3 of the lower ring of portable liquefied petroleum gas cylinder, the dial 1 with "net weight" load scale, the plate 2, the additional rod 5 of the weighing platform can be seen;

[0037] Figure 5 Rear view of the metal support for supporting the lower ring of portable liquefied petroleum gas cylinder, where the metal support, the rod 4 of three-dimensional triangular structure, the supporting angle 3 of the lower ring of portable liquefied petroleum gas cylinder, the dial 1 with "net weight" load scale, the plate 2, the additional rod 5 of the weighing platform can be seen;

[0038] Figure 6 Bottom view of the metal support for supporting the lower ring of portable liquefied petroleum gas cylinder, where the metal support, the rod 4 of three-dimensional triangular structure, the supporting angle 3 of the lower ring of portable liquefied petroleum gas cylinder, the dial 1 with "net weight" load scale, the plate 2, the additional rod 5 of the weighing platform can be seen;

[0039] Figure 7 、 Figure 8 Side view of the metal support for supporting the lower ring of portable liquefied petroleum gas cylinder, where the metal support, the rod 4 of three-dimensional triangular structure, the supporting angle 3 of the lower ring of portable liquefied petroleum gas cylinder, the dial 1 with "net weight" load scale, the plate 2, the additional rod 5 of the weighing platform can be seen;

[0040] Figure 9 Side view of the mechanical device for weighing and displaying the remaining gas in the portable liquefied petroleum gas cylinder, where the metal support 7 fixed on the upper platform, the rod 4 of three-dimensional triangular structure, the supporting angle 3 of the lower ring of portable liquefied petroleum gas cylinder, the dial 1 with "net weight" load scale, the plate 2, the additional rod 5 of the weighing platform can be seen;

[0041] Figure 10Front view of the mechanical device for weighing and displaying the remaining gas in portable LPG cylinders, where the metal bracket 7 fixed to the upper platform, the rod 4 of three-dimensional triangular structure, the support angle 3 of the lower ring of the portable LPG cylinder, the dial 1 with the "net weight" load scale, the plate 2, the additional rod 5 of the weighing platform can be seen;

[0042] Figure 11 Top view of the mechanical device for weighing and displaying the remaining gas in portable LPG cylinders, where the metal bracket 7 fixed to the upper platform, the rod 4 of three-dimensional triangular structure, the support angle 3 of the lower ring of the portable LPG cylinder, the dial 1 with the "net weight" load scale, the plate 2, the additional rod 5 of the weighing platform can be seen;

[0043] Figure 12 Rear view of the mechanical device for weighing and displaying the remaining gas in portable LPG cylinders, where the metal bracket 7 fixed to the upper platform, the rod 4 of three-dimensional triangular structure, the support angle 3 of the lower ring of the portable LPG cylinder, the dial 1 with the "net weight" load scale, the plate 2, the additional rod 5 of the weighing platform, the gear 8 of the "net weight" load centering device and the opening allowing its operation can be seen;

[0044] Figure 13 Disassembled view of the metal bracket piece for supporting the lower ring of the portable LPG cylinder, where the rod 4 of three-dimensional triangular structure, the support angle 3 of the lower ring of the portable LPG cylinder, the fixed rivet 6, the plate 2, the additional rod 5 of the weighing platform can be seen;

[0045] Figure 14 Expanded exploded view of the metal support piece for supporting the lower ring of the portable LPG cylinder, where the rod 4 of three-dimensional triangular structure, the support angle 3 of the lower ring of the portable LPG cylinder, the fixed rivet 6, the plate 2, the additional rod 5 of the weighing platform can be seen;

[0046] Figure 15 The "net weight" load scale 1 printed on the dial, taking into account the various sizes of portable LPG cylinders, where the reference image of the tare weight, the zero value of the load scale can be seen;

[0047] Figure 16 is a top view and a side view of the load centering gear 8 with the center screw 10 and the nut 9, which are part of the "net weight" load centering device;

[0048] Figure 17 Refers to the spring 11 and its coil, which is part of the load center "net weight" of portable LPG cylinders of different sizes;

[0049] Figure 18Internal top view of a mechanical device for weighing and displaying the remaining gas in a portable liquefied petroleum gas cylinder, in which the upper platform 7, the dial 1 with the "net weight" load scale, the spring 11 and its coil, and the central screw 10 can be seen;

[0050] The present utility model is related to the following changes: 1. a part of the weighing mechanism; 2. a zero alignment mechanism; 3. a dial; and 4. an upper platform of an analog mechanical bathroom scale.

[0051] The new structure of the portable mechanical device for weighing and displaying the remaining gas in a liquefied petroleum gas cylinder consists of the following parts:

[0052] a. Introducing a "net weight" load centering device to replace the zero calibrator of the mechanical analog bathroom scale;

[0053] b. A weighing platform consisting of an upper platform, which is fixedly installed with a metal support, for replacing the weighing platform of the mechanical analog bathroom scale;

[0054] c. A dial printed with a "net weight" load scale, for replacing the printed dial on the mechanical analog bathroom scale.

[0055] After removing the zero calibrator, the disc, and the original spring from the inside of the analog mechanical bathroom scale, install the "net weight" load centering device, the disc, and the spring with spring at the original position, as described above;

[0056] The "net weight" load centering device consists of a load centering gear and a central screw with an axially moving nut; the nut is provided with a spring, which is composed of steel wire springs with different diameters and a certain number of coils. The user can drive the gear from the outside through the opening; the size of the portable liquefied petroleum gas cylinder will determine the diameter of the steel wire and the number of coils;

[0057] The weighing platform includes an upper platform, which is attached with a fixed metal support for supporting the lower ring of the portable liquefied petroleum gas cylinder, which can adapt to the lower rings of steel cylinders with different diameters and evenly distribute the load during weighing;

[0058] The metal support consists of a three-dimensional triangular structure composed of folded welded rods, with three corners welded at an angle to support the position of the lower ring of the portable liquefied petroleum gas cylinder; and the other two rods;

[0059] One end of these rods is welded to the support corner of the lower ring of the portable liquefied petroleum gas cylinder, and the other two ends of the rods are welded to the rear ends of two half-parallel plates, which are connected and fixed to the upper platform by rivets;

[0060] There are three support corners, and the lower ring of the portable liquefied petroleum gas cylinder rests on them;

[0061] The four end points of the two half-parallel plates rest on the upper platform so that the contact points coincide with the four pivots simulating the internal mechanism of a mechanical bathroom scale; the rods forming a three-dimensional triangle have an inclination that guides the lower ring of the portable LPG cylinder inside when it is installed on the device; the three support angles for supporting the lower ring of the portable LPG cylinder have a certain distance between the cylinder upper platform and the lower ring, the measurement of which will depend on the size of the cylinder, with the aim of maintaining the dial view;

[0062] The dial with the "net weight" loading scale can have a single "net weight" scale for a single size of portable LPG cylinder, with a maximum range of 45 kg, and a maximum angle of the dial of 1 / 3 of the 360° circumference of the dial, or it can also have a specific "net weight" scale with a range lower than that scale, and a maximum angle of the dial of 1 / 3 of the 360° circumference of the dial;

[0063] The filling scale can have a 10% red reference of the full load as a reserve range of the gas filling;

[0064] The "net weight" load center is connected to the dial through the parallel rods, pivots, racks and pinions simulating a mechanical bathroom scale. Then, the weighing platform is mounted on the upper platform through springs, and the weighing platform is connected to the base of the mechanical bathroom scale through very slightly tightened cross bolts;

[0065] For the operation of the mechanical device for weighing and displaying the remaining gas in a portable LPG cylinder, the dial of the device must be able to rotate 2 / 3 of 360° at maximum load to cover the entire tare angle plus the net weight; the dial must rotate 2 / 3 of 360° at maximum load to cover the entire tare range plus the net weight;

[0066] When the portable LPG cylinder remaining gas weighing and display mechanical device is in the rest position, the scale line on the dial will be blank or located in the tare zone; it can be indicated with the cylinder according to its load for subsequent load centering;

[0067] Once the user has selected the desired LPG cylinder size, he / she will proceed to calibrate the "net weight" charge; the user must operate the load centering gear when installing the LPG cylinder on the scale platform so that the load scale is located in the center of the dial.

[0068] Example 2

[0069] Example 2 is an optimized implementation of the present example;

[0070] In combination Figures 1-1 6 The preferred embodiment of the portable LPG cylinder remaining gas weighing and display mechanical device is described, but it does not limit the scope of the present invention;

[0071] The "net weight" load centering device consists of a load centering gear 8 and a center screw 10, a nut 9 and a spring 11; the screw and the nut are sized according to the size of the LPG cylinder for which the device is manufactured; the spring is mounted on the nut and the number of coils of the steel spring 11 depends on the size of the portable LPG cylinder for which the spring is manufactured. A metal washer is placed at the bottom of the load centering gear 8;

[0072] The folded metal rods 4 are welded in a three-dimensional triangular structure, with three of its corners welded to the two support corners 3 of the lower ring of the portable LPG cylinder, which in turn are welded to the two ends of the two half-parallel plates 2, one end of the two folded metal rods forming the additional corner 5 is welded to one of the support corners 3 and the other end is welded to one end of the two half-parallel plates 2 and is connected to the upper platform 7 by means of the fixing rivets 6. The four end points of the two half-parallel plates 2 rest on the outside of the upper platform 7 and the points of contact with the upper platform coincide with the four pivots that simulate the internal mechanism of a mechanical bathroom scale. The metal brackets are fixed to the upper platform by means of the fixing rivets 6; the rods that form the three-dimensional triangle have an inclination that, when installed on the device, guides the internal movement of the lower ring of the portable LPG cylinder. The three points that support the lower ring of the portable LPG cylinder are at a distance from the upper platform, the size of which depends on the size of the LPG cylinder, in order to maintain the field of view of the dial 1;

[0073] The dial with the "net weight" load scale 1 has a scale that corresponds to the size of the portable LPG cylinder for which the device is intended, with a maximum range of 1 / 3 of the 360° circumference of the dial; Figure 15 A possible embodiment is shown; here, the dial has a load scale printed on it, with a maximum range of 20 kg and an angle of the dial that is slightly less than 1 / 3 of the 360° circumference of the dial;

[0074] The "net weight" load centering device is connected to the dial by means of the parallel rods, pivots, racks and pinions that simulate a mechanical bathroom scale. Then, the upper platform 7 with the metal brackets is mounted on the base of the device by means of the springs on the upper platform of a mechanical bathroom scale.

[0075] Industrial applications of the present invention:

[0076] The metal brackets attached to the upper platform can be manufactured by bending a mold;

[0077] The other parts of the portable LPG cylinder remaining gas weighing and display mechanical device are manufactured using methods and materials known in the metallurgical industry;

[0078] The dial of the portable LPG cylinder remaining gas weighing and display mechanical device can have different scales printed on it.

[0079] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several deformations and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A mechanical device for weighing and displaying the remaining gas in a portable liquefied petroleum gas cylinder, characterized in that, Comprising of: Net weight load centering device consisting of centering gear, center screw, nut and spring loaded elastic component; Weighing platform comprising of three dimensional triangular metal bracket with additional corners attached to three supporting corners and two half parallel plates attached to upper platform through fixed rivets; Net weight weighing scale.

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