Device capable of realizing rapid oil charging in vacuum state

Abstract

The utility model discloses a device capable of realizing rapid oil charging in a vacuum state, and belongs to the field of diaphragm transmitters. The oil filling device comprises an oil filling connector, a through hole jackscrew and a steel ball which are sequentially arranged from top to bottom, and an oil filling hole is formed along the inner center line of the oil filling connector and the inner center line of the through hole jackscrew in a penetrating mode. One end of the oil filling joint is a pagoda joint, and the other end is a hexagonal prism; a hexagonal prism protrusion and a cylinder are sequentially arranged between the pagoda connector and the hexagonal prism from top to bottom in an adjacent mode. A sealing ring mounting groove is formed in the cylinder; and the steel ball and the sealing conical surface of the oil filling base form spherical sealing. According to the oil filling device, the diaphragm transmitter can be quickly plugged in the filling process without disassembling the oil filling connector in the vacuum state.

Description

Technical Field

[0001] The utility model belongs to the field of diaphragm transmitters and relates to a rapid oil filling device that can achieve a vacuum state. Background Art

[0002] The existing diaphragm transmitter isolates the measured medium from the basic transmitter through an elastic diaphragm. Silicone oil is filled between the elastic diaphragm and the basic transmitter to ensure the safety and accuracy of the measurement process. When the measured medium acts on the diaphragm, a corresponding pressure change will occur. This change will be transmitted to the pressure-sensitive element inside the basic transmitter through the deformation of the diaphragm via the silicone oil, and then an electrical signal proportional to the pressure will be generated.

[0003] When filling oil into the diaphragm transmitter in the prior art, the inside of the product is first evacuated through an oil filling joint. After the vacuum degree is reached, silicone oil is filled. However, the oil filling joint needs to be disassembled after the silicone oil is filled, and then the oil filling port is blocked by steel balls and set screws. It is difficult to control the filling amount of silicone oil during the blocking process. It may also occur that part of the air is blocked in the product during the blocking process after the oil filling joint is disassembled. Such an operation will affect the measurement accuracy of the entire diaphragm transmitter. Summary of the Utility Model

[0004] In order to overcome the above-mentioned disadvantages of the prior art, the purpose of the utility model is to provide a rapid oil filling device that can achieve a vacuum state. This oil filling device can quickly block the diaphragm transmitter during oil filling without disassembling the oil filling joint in a vacuum state.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a rapid oil filling device that can achieve a vacuum state. The oil filling device includes an oil filling joint, a through-hole set screw, and a steel ball arranged in sequence from top to bottom. An oil filling hole is drilled through the inner centerlines of the oil filling joint and the through-hole set screw; one end of the oil filling joint is a taper joint, and the other end is a hexagonal prism; a hexagonal prism protrusion and a cylinder are closely arranged in sequence from top to bottom between the taper joint and the hexagonal prism; a sealing ring installation groove is formed on the cylinder; the steel ball forms a spherical seal with the sealing cone surface of the oil filling base.

[0007] In one embodiment, the sealing ring installation groove is located close to the hexagonal prism.

[0008] In one embodiment, the cylinder includes a side surface and a bottom surface connected to the hexagonal prism, and a chamfer is arranged at the junction of the side surface and the bottom surface.

[0009] In one embodiment, an O-ring is arranged inside the sealing ring installation groove.

[0010] In one embodiment, the taper direction of the pagoda joint is towards the direction of oil flow.

[0011] In one embodiment, the pagoda joint, the hexagonal prism protrusion, the hexagonal prism and the cylinder are integrally formed.

[0012] In one embodiment, an internal hexagonal groove is provided inside the through-hole setscrew, and the hexagonal prism is matched with the internal hexagonal groove on the through-hole setscrew.

[0013] In one embodiment, the depth of the internal hexagonal groove is the same as the height of the hexagonal prism; the through-hole setscrew is aligned with the oil filling hole provided on the hexagonal prism.

[0014] In one embodiment, the bottom of the through-hole setscrew is a flat surface; the flat surface is in contact with the steel ball.

[0015] In one embodiment, the flat surface is a circular surface, and the diameter of the circular surface is the same as the diameter of the steel ball.

[0016] In one embodiment, the pagoda joint is connected to a silicone tube.

[0017] In one embodiment, the side length of the bottom surface of the hexagonal prism is smaller than the side length of the bottom surface of the hexagonal prism protrusion.

[0018] Compared with the prior art, the present utility model has the following beneficial effects:

[0019] The present utility model provides a rapid oil filling device that can achieve a vacuum state. A spherical seal is formed by the sealing conical surface designed on the oil filling base and the steel ball extruded by the setscrew. This sealing method is particularly effective in a vacuum state, which can ensure no leakage during the oil filling process. By adjusting the tightening degree of the setscrew, the pressure of the steel ball on the sealing conical surface can be precisely controlled, thereby adjusting the sealing effect, which not only ensures the sealing performance but also avoids damage caused by excessive pressing. The through-hole designed on the setscrew not only facilitates the vacuum pumping operation but also makes the oil filling process smoother. This design avoids the trouble of frequently disassembling and installing the joint during the oil filling process. By tightening and slightly withdrawing the setscrew, the opening and closing of the oil filling channel can be conveniently controlled, which not only ensures the smooth progress of the oil filling process but also facilitates the rapid sealing of the oil filling port after the oil filling is completed. The design of the pagoda joint makes the connection of the silicone tube fast and stable, effectively preventing leakage problems during the vacuum pumping or oil filling process. The hexagonal prism is equivalent to an internal hexagonal tool head, and the hexagonal prism protrusion is an external hexagonal tool position. The hexagonal prism (internal hexagonal tool head) is used to fix the setscrew, and the hexagonal prism protrusion (external hexagonal tool position) is used to tighten the setscrew after the oil filling is completed. This design improves the convenience and accuracy of the operation.

[0020] Further, the oil filling connector, the through-hole setscrew, and the steel ball are arranged in sequence from top to bottom, forming an integrated oil filling device, reducing the connection gaps between components and lowering the leakage risk.

[0021] Further, the sealing groove designed on the customized connector is used in cooperation with the O-ring to achieve radial sealing between the customized connector and the oil filling base, further enhancing the sealing performance of the device. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the oil filling process of the diaphragm transmitter of the present utility model;

[0023] Figure 2 It is a cross-sectional view of the structure of the oil filling connector of the present utility model;

[0024] Figure 3 It is a bottom view of the structure of the oil filling connector of the present utility model;

[0025] Figure 4 It is a cross-sectional view of the structure of the through-hole setscrew of the present utility model;

[0026] Figure 5 It is a top view of the structure of the through-hole setscrew of the present utility model;

[0027] Figure 6 It is a schematic diagram of the oil filling connector of the oil filling device of the present utility model;

[0028] Figure 7 It is a schematic diagram of the oil filling process of the diaphragm transmitter of the present utility model.

[0029] Wherein: 1 - oil filling connector; 2 - taper connector; 3 - hexagonal prism protrusion; 4 - sealing ring installation groove; 5 - hexagonal prism; 6 - O-ring; 7 - silicone tube; 8 - through-hole setscrew; 9 - steel ball; 10 - chamfer; 11 - oil filling hole. Detailed Embodiment

[0030] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of the present utility model are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data used can be interchanged under appropriate circumstances, so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0032] The following further describes the present utility model in detail with reference to the drawings:

[0033] See Figure 1 、 7 As shown, the present utility model provides a rapid oil filling device that can achieve a vacuum state. The main components include an oil filling joint 1, a through-hole set screw 8 and a steel ball 9 arranged in sequence from top to bottom. As Figures 2 to 6 shown, along the core axis of the two, a through oil filling hole 11 is opened to ensure unobstructed oil flow. The through hole in the through-hole set screw 8 is the oil filling hole 11 in the through-hole set screw 8. (The through hole in the through-hole set screw 8 is coaxial with the oil filling hole 11 of the oil filling joint 1 to ensure unobstructed oil flow during oil filling). One end of the oil filling joint 1 has a flare fitting 2, which is convenient for quick docking with a silicone tube 7, etc. The other end is a hexagonal prism 5 structure, which is equivalent to an internal hexagonal tool head and perfectly matches the internal hexagonal groove opened in the through-hole set screw 8, facilitating the tightening operation. Between the flare fitting 2 and the hexagonal prism 5, a hexagonal prism protrusion 3 and a cylinder are arranged closely in sequence from top to bottom. The hexagonal prism protrusion 3 serves as an external hexagonal tool position, and the cylinder with a sealing function has a sealing ring installation groove 4 opened on it, ensuring the reliability of the seal.

[0034] Particularly crucial is that the device introduces a spherical sealing mechanism in the oil filling base. Through the adjustment of the steel ball 9 by the through-hole set screw 8, it can be closely attached to the sealing conical surface of the oil filling base to form a vacuum sealing effect. This design not only ensures no leakage during the oil filling process, but also allows users to precisely control the sealing pressure by fine-tuning the tightness of the set screw according to actual needs, avoiding overpressure damage.

[0035] The unique design of the through-hole set screw 8, the through hole on it not only simplifies the vacuum extraction process, but also optimizes the oil flow path, making the oil filling process smoother and more efficient. At the same time, this design also greatly simplifies the operation process. Users only need to tighten or fine-tune the set screw to easily control the opening and closing of the oil filling channel, which not only ensures the smooth progress of the oil filling operation, but also facilitates quickly sealing the oil filling port after completion.

[0036] In a specific implementation process, the sealing ring installation groove 4 is arranged on one side close to the hexagonal prism 5 to ensure a compact and efficient sealing structure. An O-ring 6 is arranged inside the sealing ring installation groove 4, optimizing the arrangement position of the O-ring 6 to make it closer to the stress point, enhancing the reliability and stability of the seal, and at the same time reducing the risk of leakage. With its good elasticity and sealing performance, the O-ring 6 can effectively fill the tiny gaps to prevent leakage and ensure the stable operation of the device in a vacuum environment.

[0037] In a specific implementation process, the cylinder includes a side surface and a bottom surface connected to the hexagonal prism 5, and a chamfer 10 is arranged at the junction of the side surface and the bottom surface. The taper direction of the flare fitting 2 is towards the direction of oil flow.

[0038] In a specific implementation process, the flare fitting 2, the hexagonal prism protrusion 3, the hexagonal prism 5, and the cylinder are of an integrally formed structure, enhancing the integrity and stability of the device.

[0039] In a specific implementation process, the internal hexagon groove is arranged inside the through-hole setscrew 8, and this groove cooperates with the hexagonal prism 5 to achieve a quick and stable fixed connection. The design of the internal hexagon groove and the hexagonal prism 5 makes the fastening process of the setscrew more convenient and fast, improving the work efficiency.

[0040] In a specific implementation process, a through-hole, namely the oil filling hole 11, is opened below the internal hexagon groove in the through-hole setscrew 8. The through-hole setscrew 8 is aligned with the oil filling hole 11 opened on the hexagonal prism 5 to ensure the unobstructed oil filling channel. The depth of the internal hexagon groove is the same as the height of the hexagonal prism 5.

[0041] In a specific implementation process, the bottom of the through-hole setscrew is designed as a flat surface, and this flat surface is in close contact with the steel ball. Further, this flat surface is a circular surface, and the diameter of the circular surface is the same as the diameter of the steel ball to facilitate...

[0042] In a specific implementation process, the flare fitting 2 is designed to be directly connected to the silicone tube 7. This design simplifies the connection process and improves the stability and sealing performance of the connection.

[0043] In a specific implementation process, the side length of the bottom surface of the hexagonal prism 5 is designed to be smaller than the side length of the bottom surface of the hexagonal prism protrusion 3. The hexagonal prism 5 is equivalent to an internal hexagon tool head, and the hexagonal prism protrusion 3 is an external hexagon tool position. The hexagonal prism 5 (internal hexagon tool head) is used to fix the setscrew, and the hexagonal prism protrusion 3 (external hexagon tool position) is used to tighten the setscrew after the oil filling is completed. This design improves the convenience and accuracy of the operation.

[0044] Such as Figure 1 、 7As shown in the figure, the usage method of the rapid oil filling device that can achieve a vacuum state includes the following steps:

[0045] (1) Place the steel ball 9 into the oil filling interface (the oil filling interface is the oil filling position of the oil filling base. A downward inverted cone area is processed and set at the oil filling position of the oil filling base. The steel ball 9 is located in the inverted cone area, and the two cooperate to form a conical surface seal to ensure the seal after oil filling is completed). Fix the through-hole set screw 8 at the oil filling interface through threads. Use a hexagonal prism 5 (internal hexagonal tool head) to fix and press the through-hole set screw 8 against the steel ball 9. After tightening, back off the through-hole set screw 8 by one turn; the purpose of this step is to open the oil filling channel to facilitate oil filling;

[0046] (2) Put the O-ring 6 into the seal installation groove 4 of the special oil filling joint 1. Put a silicone tube 7 on the bellows joint 2 at the other end of the oil filling joint 1 and connect it to an oil filling machine. Insert the connected oil filling joint 1 onto the through-hole set screw 8, so that the hexagonal prism 5, i.e., the hexagonal head, at the joint end of the oil filling joint 1 is inserted into the through-hole set screw 8. The O-ring 6 realizes the side seal between the oil filling joint 1 and the oil filling hole;

[0047] (3) After completing the assembly of the oil filling joint 1, start the oil filling equipment and start evacuating the oil filling pipeline. After the vacuum degree reaches the process requirements, start the oil filling process. After filling, rotate the hexagonal prism protrusion 3 of the oil filling joint 1, i.e., an external hexagonal tool, clockwise for one week, and press the through-hole set screw 8 tightly through the oil filling joint 1. The steel ball 9 realizes the sealing of the oil filling port in a vacuum state.

[0048] (4) After the steel ball 9 is sealed, pull out the oil filling joint 1 to complete the silicone oil filling of the diaphragm transmitter.

[0049] The rapid oil filling device provided by the present utility model can complete the silicone oil filling process of the diaphragm transmitter in a vacuum state, realizing accurate control of the silicone oil and preventing the situation that gas is sealed into the diaphragm transmitter when placing the steel ball 9 after the existing process of filling is completed. It can reduce the manual operation during the oil filling process. In the existing process, it is necessary to disassemble the oil filling joint 1 and then put the steel ball 9 and install the through-hole set screw 8, and the overflowing silicone oil needs to be cleaned up by subsequent workers. The rapid oil filling device provided by the present utility model directly pre-inserts the steel ball 9 and the through-hole set screw 8 into the oil filling interface and directly uses the oil filling joint 1 as a tool to tighten, reducing the manual operation steps. The structure is simple, and the special oil filling can be used repeatedly, reducing the oil filling cost.

[0050] The above content is only to illustrate the technical idea of the present utility model and cannot be used to limit the protection scope of the present utility model. Any changes made on the basis of the technical solution according to the technical idea proposed by the present utility model fall within the protection scope of the claims of the present utility model.

Claims

1. A device capable of realizing rapid oil filling under vacuum state, characterized in that: The oil filling device comprises an oil filling joint (1), a through hole top screw (8) and a steel ball (9) which are arranged in sequence from top to bottom, and an oil filling hole (11) is provided along the inner center line of the oil filling joint (1) and the through hole top screw (8); one end of the oil filling joint (1) is a pagoda joint (2), and the other end is a hexagonal prism (5); a hexagonal prism protrusion (3) and a cylinder are arranged closely between the pagoda joint (2) and the hexagonal prism (5) from top to bottom; a sealing ring mounting groove (4) is provided on the cylinder; the steel ball (9) forms a spherical seal with the sealing cone surface of the oil filling base.

2. The device capable of realizing rapid oil filling under vacuum state according to claim 1, characterized in that: The sealing ring installation groove (4) is opened at a position close to the hexagonal prism (5).

3. The device capable of realizing rapid oil filling under vacuum state according to claim 1, characterized in that: The cylinder comprises a side surface and a bottom surface connected to the hexagonal prism (5), and a chamfer (10) is provided at the junction of the side surface and the bottom surface.

4. The device capable of realizing rapid oil filling under vacuum state according to claim 1, characterized in that: An O-type sealing ring (6) is arranged inside the sealing ring installation groove (4).

5. The device capable of realizing rapid oil filling under vacuum state according to claim 1, characterized in that: The taper direction of the pagoda joint (2) is towards the direction of oil flow.

6. The device capable of realizing rapid oil filling under vacuum state according to claim 1, characterized in that: The pagoda joint (2), the hexagonal prism protrusion (3), the hexagonal prism (5) and the cylinder are integrally formed.

7. The device capable of realizing rapid oil filling under vacuum state according to claim 1, characterized in that: The through hole top screw (8) is provided with an inner hexagonal groove, and the hexagonal column (5) matches the inner hexagonal groove on the through hole top screw (8).

8. The device capable of realizing rapid oil filling under vacuum state according to claim 7, characterized in that: The depth of the hexagonal groove is the same as the height of the hexagonal prism (5); and the through-hole top screw (8) is aligned with the oil filling hole (11) opened on the hexagonal prism (5).

9. The device capable of realizing rapid oil filling under vacuum state according to claim 1, characterized in that: The bottom of the through-hole top screw (8) is a plane; the plane is in contact with the steel ball (9).

10. The device capable of realizing rapid oil filling under vacuum state according to claim 9, characterized in that: The plane is a circular surface, and the diameter of the circular surface is the same as the diameter of the steel ball (9).

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