A positive and negative pressure switching cavity structure

Abstract

The utility model discloses a cavity structure of positive and negative pressure switching, including cavity main part, vacuum ball valve module, first pipe line, second pipe line and the confluence seat, this cavity structure still includes the vacuum metering subassembly, the electric control pressure control subassembly, the positive pressure ball valve subassembly and the pressure relief valve subassembly all with the connection of confluence seat, vacuum ball valve module and the first mounting hole's junction is provided with the first sealing ring, the confluence seat is connected between first pipe line and second pipe line and is fixed to the cavity main part outside through the connecting plate side, and the internal chamber of confluence seat is communicated with the cavity main part, and vacuum metering subassembly is used for measuring the vacuum size of confluence seat inside, and the electric control pressure control subassembly is used for controlling the air pressure size of confluence seat inside. The utility model can realize big pressure difference and low vacuum work, accurate control pressure, quick response pressure switch, satisfy VR product display pasting to positive and negative pressure switching high efficiency, accurate demand, improve product quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of VR product display bonding in the 3C industry, specifically to a cavity structure that switches between positive and negative pressure. Background Technology

[0002] The existing positive and negative pressure switching cavity structure is achieved through independent positive and negative pressure systems, which are connected to the cavity via external pipes and valves.

[0003] The following are defects in the cavity structure of existing technology:

[0004] 1. It is only suitable for working conditions with small positive and negative pressure differences and rough vacuum, and cannot achieve large pressure differences and low vacuum.

[0005] 2. Poor pressure control accuracy;

[0006] 3. The pressure response speed is slow.

[0007] In view of this, it is necessary to improve the cavity structure in the existing technology. Utility Model Content

[0008] The purpose of this invention is to provide a cavity structure for switching between positive and negative pressure, so as to solve the problems existing in the prior art, such as the inability to achieve large pressure difference and low vacuum, poor pressure control accuracy, and slow pressure response speed.

[0009] To solve the above technical problems, this utility model provides the following solution: A cavity structure for switching between positive and negative pressure, comprising:

[0010] The cavity body has mounting holes on both opposite side plates. The mounting holes are a first mounting hole, a second mounting hole, and a third mounting hole, wherein the second mounting hole and the third mounting hole are staggered on the opposite side plates.

[0011] A vacuum ball valve module is installed in the first mounting hole, and a first sealing ring is provided at the connection between the vacuum ball valve module and the first mounting hole;

[0012] The first conduit connected to the second mounting hole;

[0013] The second conduit connected to the third mounting hole;

[0014] A manifold is connected between the first and second pipelines and fixed to the outside of the cavity body via a connecting plate. The inside of the manifold communicates with the inner cavity of the cavity body.

[0015] A vacuum metering component installed on the manifold and used to measure the vacuum level inside the manifold;

[0016] An electronically controlled pressure control component installed on the manifold and used to control the internal air pressure of the manifold;

[0017] A positive pressure ball valve assembly installed in the manifold and communicating with the interior of the manifold;

[0018] A pressure relief valve assembly installed in and communicating with the inside of the manifold.

[0019] Furthermore, floating mounting seats are connected to all four corners of the cavity body.

[0020] Furthermore, a positive pressure capacitive pressure gauge for measuring the pressure inside the cavity is installed on the outside of the cavity body.

[0021] Furthermore, the first pipeline includes a first bend, a first flexible corrugated pipe and a flange bend connected in sequence, and a second sealing ring is provided at each connection point;

[0022] The other end of the first bend is connected to the second mounting hole, and the other end of the flange bend is connected to the first end of the manifold, with a second sealing ring provided at the connection.

[0023] Furthermore, the second pipeline includes a second bend at one end connected to the third mounting hole and a second flexible corrugated pipe at the other end of the second bend;

[0024] A second sealing ring is provided at the connection between the second bend and the second flexible corrugated pipe;

[0025] The other end of the second flexible corrugated tube is connected to the second end of the manifold and a second sealing ring is provided at the connection.

[0026] Furthermore, the vacuum metering assembly includes a vacuum gauge ball valve, a centering sealing ring, a clamp, and a vacuum gauge;

[0027] The first end of the vacuum gauge ball valve is connected to the side of the manifold, and a third sealing ring is provided at the connection between the vacuum gauge ball valve and the manifold.

[0028] The vacuum gauge is installed at the second end of the vacuum gauge ball valve via the clamp and a centering sealing ring is provided at the connection.

[0029] The vacuum gauge ball valve and the manifold together form the first channel.

[0030] Furthermore, the electronically controlled pressure control assembly includes an air connector, an electronically controlled pressure controller, and an electronically controlled pressure ball valve;

[0031] The first end orifice of the electrically controlled pressure ball valve is connected to the side of the manifold and a third sealing ring is provided at the connection.

[0032] The flange end of the electric pressure controller is connected to the second end port of the electric pressure ball valve and a third sealing ring is provided at the connection. The outer end port of the electric pressure controller is connected to the air connector. The air connector, the electric pressure controller, the electric pressure ball valve and the inner cavity of the manifold form a second channel.

[0033] Furthermore, the positive pressure ball valve assembly includes a positive pressure ball valve, a fourth sealing ring, and a flange joint;

[0034] The first end of the positive pressure ball valve is connected to the side of the manifold and a fourth sealing ring is provided at the connection. The flange joint is connected to the second end of the positive pressure ball valve and a fourth sealing ring is provided at the connection.

[0035] The flange joint, the positive pressure ball valve, and the manifold together form a third channel.

[0036] Furthermore, the pressure relief valve assembly includes a silencer, an adapter, a flange mount, and a pressure relief ball valve connected in sequence;

[0037] The other end of the pressure relief ball valve is connected to the side of the manifold;

[0038] The silencer, adapter, flange mounting, pressure relief ball valve, and manifold together form a fourth channel.

[0039] A fourth sealing ring is provided at the connection between the flange mounting component and the pressure relief ball valve;

[0040] A fourth sealing ring is provided at the connection between the pressure relief ball valve and the manifold.

[0041] Compared with existing technologies, the beneficial effects of this utility model are as follows: Through its unique cavity structure design and the coordinated work of its components, this utility model can achieve stable operation under large pressure difference and low vacuum environments; by utilizing the electronically controlled pressure control component, the pressure can be precisely controlled, improving the pressure control accuracy; the positive pressure air source, combined with the fast-response valve, can achieve rapid pressure switching, effectively improving the pressure response speed, meeting the high-efficiency and precise requirements for positive and negative pressure switching during the display bonding process of VR products in the 3C industry, and improving product production quality and efficiency. Attached Figure Description

[0042] Figure 1 This is a three-dimensional assembly view of the cavity structure for switching between positive and negative pressure according to this utility model.

[0043] Figure 2 This is an exploded view of the cavity structure for switching between positive and negative pressure in this utility model.

[0044] Figure 3 This is an installation structure diagram of the positive pressure ball valve assembly and the pressure relief valve assembly of this utility model.

[0045] The attached diagram shows the following components: 1. Cavity body; 2. First sealing ring; 3. Vacuum ball valve module; 4. Positive pressure capacitive pressure gauge; 5. Floating mounting base; 6. Manifold; 7. Connecting plate; 8. Second sealing ring; 9. First flexible bellows; 10. Flange bend; 11. Third sealing ring; 12. Vacuum gauge ball valve; 13. Centering sealing ring; 14. Clamp; 15. Vacuum gauge; 16. Gas connector; 17. Electrically controlled pressure controller; 18. Electrically controlled pressure ball valve; 19. Positive pressure ball valve; 20. Fourth sealing ring; 21. Flange connector; 22. Silencer; 23. Adapter; 24. Flange mounting component; 25. Pressure relief ball valve; 26. First pipeline; 27. Second pipeline. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0047] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0048] Example 1: The specific structure of this utility model is as follows:

[0049] Please refer to the appendix. Figure 1-3 The present invention provides a cavity structure for switching between positive and negative pressure, comprising a cavity body 1, a vacuum ball valve module 3, a first pipeline 26, a second pipeline 27, a manifold 6, a vacuum metering component, an electronically controlled pressure control component, a positive pressure ball valve component, and a pressure relief valve component.

[0050] Each of the four corners of the cavity body 1 is connected to a floating mounting seat 5, which has the function of shock absorption.

[0051] A positive pressure capacitive pressure gauge 4 for measuring the pressure inside the cavity body 1 is installed on the outside of the cavity body 1.

[0052] The cavity body 1 is a rectangular box with a rectangular chamber inside. The opposite side plates of the rectangular box are provided with mounting holes, namely a first mounting hole, a second mounting hole, and a third mounting hole. The second mounting hole and the third mounting hole are staggered on the opposite side plates. The advantage of this design is that the vacuuming and air filling are uniform.

[0053] A vacuum ball valve module 3 is installed in the first mounting hole, and a first sealing ring 2 is provided at the connection between the vacuum ball valve module 3 and the first mounting hole. The vacuum ball valve module 3 is used to control the vacuum of the cavity body 1.

[0054] The first pipe 26 is connected to the second mounting hole; the first pipe 26 includes a first bend, a first flexible corrugated pipe 9 and a flange bend 10 connected in sequence, and a second sealing ring 8 is provided at each connection; wherein, the other end of the first bend is connected to the second mounting hole, and the other end of the flange bend 10 is connected to the first end of the manifold 6 and a second sealing ring 8 is provided at the connection.

[0055] A second conduit 27 is connected to the third mounting hole; the second conduit 27 includes a second bend connected to the third mounting hole at one end and a second flexible corrugated pipe connected to the other end of the second bend; a second sealing ring 8 is provided at the connection between the second bend and the second flexible corrugated pipe; the other end of the second flexible corrugated pipe is connected to the second end of the manifold 6 and a second sealing ring 8 is provided at the connection.

[0056] The manifold 6 is connected between the first pipe 26 and the second pipe 27 and is fixed to the outside of the cavity body 1 by the connecting plate 7. The inside of the manifold 6 is in communication with the inner cavity of the cavity body 1.

[0057] like Figure 2 As shown, the vacuum metering component is installed on the manifold 6 and is used to measure the vacuum level inside the manifold 6; the vacuum metering component includes a vacuum gauge ball valve 12, a centering sealing ring 13, a clamp 14, and a vacuum gauge 15;

[0058] The first end of the vacuum gauge ball valve 12 is connected to the side of the manifold 6, and a third sealing ring 11 is provided at the connection between the vacuum gauge ball valve 12 and the manifold 6.

[0059] The vacuum gauge 15 is installed at the second end of the vacuum gauge ball valve 12 via the clamp 14 and a centering sealing ring 13 is provided at the connection.

[0060] The vacuum gauge ball valve 12 and the interior of the manifold 6 form the first channel. The vacuum gauge ball valve 12 is used to protect the vacuum gauge 15 and prevent positive pressure from damaging the vacuum gauge 15. Under vacuum conditions, the vacuum gauge ball valve 12 is opened to measure the vacuum degree of the cavity.

[0061] like Figure 2 As shown, the electronically controlled pressure control component is installed on the manifold 6 and is used to control the internal air pressure of the manifold 6; the electronically controlled pressure control component includes an air connector 16, an electronically controlled pressure controller 17, and an electronically controlled pressure ball valve 18;

[0062] The first end port of the electrically controlled pressure ball valve 18 is connected to the side of the manifold 6 and a third sealing ring 11 is provided at the connection.

[0063] The flange end of the electrically controlled pressure controller 17 is connected to the second end port of the electrically controlled pressure ball valve 18, and a third sealing ring 11 is provided at the connection. The outer end port of the electrically controlled pressure controller 17 is connected to the air connector 16. The air connector 16, the electrically controlled pressure controller 17, the electrically controlled pressure ball valve 18, and the inner cavity of the manifold 6 form a second channel. The electrically controlled pressure ball valve 18 opens when precise pressure control is performed to precisely control the positive pressure.

[0064] like Figure 3 As shown, the positive pressure ball valve assembly is installed on the manifold 6 and communicates with the interior of the manifold 6; the positive pressure ball valve assembly includes a positive pressure ball valve 19, a fourth sealing ring 20, and a flange joint 21;

[0065] The first end of the positive pressure ball valve 19 is connected to the side of the manifold 6 and a fourth sealing ring 20 is provided at the connection. The flange joint 21 is connected to the second end of the positive pressure ball valve 19 and a fourth sealing ring 20 is provided at the connection.

[0066] The flange joint 21, the positive pressure ball valve 19, and the manifold 6 together form a third channel. The outer end of the flange joint 21 is connected to a positive pressure air inlet pipe, which supplies air through external equipment.

[0067] like Figure 3 As shown, the pressure relief valve assembly is installed on the manifold 6 and communicates with the interior of the manifold 6. The pressure relief valve assembly includes a silencer 22, an adapter 23, a flange mounting component 24, and a pressure relief ball valve 25 connected in sequence.

[0068] The other end of the pressure relief ball valve 25 is connected to the side of the manifold 6;

[0069] The silencer 22, adapter 23, flange mounting 24, pressure relief ball valve 25 and manifold 6 together form a fourth channel;

[0070] A fourth sealing ring 20 is provided at the connection between the flange mounting component 24 and the pressure relief ball valve 25;

[0071] A fourth sealing ring 20 is provided at the connection between the pressure relief ball valve 25 and the manifold 6.

[0072] Rapid pressure response and precise control: The positive pressure air source contains an air storage tank, which is much larger than the vacuum chamber. The air pressure inside the storage tank is greater than the maximum pressure required by the main body 1 of the chamber. When the positive pressure ball valve 19 opens, the main body 1 of the chamber is quickly filled with compressed air. After the pressure inside the main body 1 of the chamber reaches the set value of the positive pressure capacitive pressure gauge 4, the positive pressure ball valve 19 closes, and at the same time, the electrically controlled pressure ball valve 18 opens to keep the chamber pressure constant at the set pressure.

[0073] In summary, this invention, through its unique cavity structure design and the coordinated operation of its components, enables stable operation under conditions of high pressure differential and low vacuum. The use of an electronically controlled pressure control component allows for precise pressure control, improving accuracy. The positive pressure air source, combined with a fast-response valve, enables rapid pressure switching, effectively enhancing pressure response speed and meeting the high-efficiency, precise switching requirements for positive and negative pressure during the bonding process of VR products in the 3C industry, thereby improving product manufacturing quality and efficiency.

[0074] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A cavity structure for switching between positive and negative pressure, characterized in that, include: The cavity body (1) has mounting holes on both of its opposite side plates. The mounting holes are a first mounting hole, a second mounting hole, and a third mounting hole, respectively. The second mounting hole and the third mounting hole are offset on the opposite side plates. A vacuum ball valve module (3) is installed in the first mounting hole, and a first sealing ring (2) is provided at the connection between the vacuum ball valve module (3) and the first mounting hole; The first conduit (26) is connected to the second mounting hole; The second conduit (27) is connected to the third mounting hole; A manifold (6) is connected between the first pipe (26) and the second pipe (27) and fixed to the outside of the cavity body (1) via a connecting plate (7). The inside of the manifold (6) is in communication with the inner cavity of the cavity body (1). A vacuum metering component installed on the manifold (6) and used to measure the vacuum level inside the manifold (6); An electronically controlled pressure control component installed on the manifold (6) and used to control the internal air pressure of the manifold (6); A positive pressure ball valve assembly installed in the manifold (6) and communicating with the interior of the manifold (6); A pressure relief valve assembly installed in the manifold (6) and communicating with the interior of the manifold (6).

2. The cavity structure for switching between positive and negative pressure according to claim 1, characterized in that, The cavity body (1) is connected to floating mounting bases (5) at all four corners.

3. The cavity structure for switching between positive and negative pressure according to claim 1, characterized in that, A positive pressure capacitive pressure gauge (4) for measuring the pressure inside the cavity is installed on the outside of the cavity body (1).

4. The cavity structure for switching between positive and negative pressure according to claim 1, characterized in that, The first pipeline (26) includes a first bend, a first flexible corrugated pipe (9) and a flange bend (10) connected in sequence, and a second sealing ring (8) is provided at each connection. The other end of the first bend is connected to the second mounting hole, and the other end of the flange bend (10) is connected to the first end of the manifold (6) and a second sealing ring (8) is provided at the connection.

5. The cavity structure for switching between positive and negative pressure according to claim 1, characterized in that, The second pipeline (27) includes a second bend at one end connected to the third mounting hole and a second flexible corrugated pipe at the other end of the second bend; A second sealing ring (8) is provided at the connection between the second bend and the second flexible corrugated pipe; The other end of the second flexible bellows is connected to the second end of the manifold (6) and a second sealing ring (8) is provided at the connection.

6. The cavity structure for switching between positive and negative pressure according to claim 1, characterized in that, The vacuum metering assembly includes a vacuum gauge ball valve (12), a centering sealing ring (13), a clamp (14), and a vacuum gauge (15); The first end of the vacuum gauge ball valve (12) is connected to the side of the manifold (6), and a third sealing ring (11) is provided at the connection between the vacuum gauge ball valve (12) and the manifold (6); The vacuum gauge (15) is installed at the second end of the vacuum gauge ball valve (12) via the clamp (14) and a centering sealing ring (13) is provided at the connection. The vacuum gauge ball valve (12) and the manifold (6) together form the first channel.

7. The cavity structure for switching between positive and negative pressure according to claim 1, characterized in that, The electronically controlled pressure control assembly includes an air connector (16), an electronically controlled pressure controller (17), and an electronically controlled pressure ball valve (18); The first end port of the electrically controlled pressure ball valve (18) is connected to the side of the manifold (6) and a third sealing ring (11) is provided at the connection. The flange end of the electric pressure controller (17) is connected to the second end port of the electric pressure ball valve (18) and a third sealing ring (11) is provided at the connection. The outer end port of the electric pressure controller (17) is connected to the air connector (16). The air connector (16), the electric pressure controller (17), the electric pressure ball valve (18) and the inner cavity of the manifold (6) form a second channel.

8. The cavity structure for switching between positive and negative pressure according to claim 1, characterized in that, The positive pressure ball valve assembly includes a positive pressure ball valve (19), a fourth sealing ring (20), and a flange joint (21); The first end of the positive pressure ball valve (19) is connected to the side of the manifold (6) and a fourth sealing ring (20) is provided at the connection. The flange joint (21) is connected to the second end of the positive pressure ball valve (19) and a fourth sealing ring (20) is provided at the connection. The flange joint (21), the positive pressure ball valve (19), and the manifold (6) form a third channel.

9. The cavity structure for switching between positive and negative pressure according to claim 1, characterized in that, The pressure relief valve assembly includes a silencer (22), an adapter (23), a flange mount (24), and a pressure relief ball valve (25) connected in sequence. The other end of the pressure relief ball valve (25) is connected to the side of the manifold (6); The silencer (22), adapter (23), flange mount (24), pressure relief ball valve (25) and manifold (6) form the fourth channel; A fourth sealing ring (20) is provided at the connection between the flange mounting part (24) and the pressure relief ball valve (25); A fourth sealing ring (20) is provided at the connection between the pressure relief ball valve (25) and the manifold (6).

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