Self-operated two-way pressure reducing device for carbonic acid preparation

Abstract

The utility model discloses a self-operated two-way decompression device for carbonic acid preparation, which relates to the technical field of inorganic chemical industry and comprises a machine body and two supports, two switch handles are arranged on the surface of the machine body, a connecting frame is arranged on the right side of the machine body, and two fixing columns are fixedly connected to the surface of the connecting frame. A push rod is pressed downwards to drive two fixed limiting columns to move together, two reset springs are compressed, switch handles are closed at the moment, after closing is completed, the two reset springs drive the two limiting columns to reset, the two limiting columns reset to be clamped with the two switch handles, holes are formed in the surfaces of the two switch handles, and the two limiting columns are clamped with the two switch handles through the holes. At the moment, the two limiting columns are in a limiting and fixing state, stability during closing can be guaranteed, the switch handle can be forcibly stopped at the designed closing position through limiting, the sealing faces of the valve are completely attached, and leakage caused by not-in-place closing is avoided.

Description

Technical Field

[0001] This utility model relates to the field of inorganic chemical technology, and in particular to a self-regulating dual-path pressure reducing device for carbonic acid preparation. Background Technology

[0002] The self-regulating dual-path pressure reducing device for carbonic acid production is a key piece of equipment in the carbonic acid production process. It is mainly used to control the pressure during the mixing of carbon dioxide gas and water to ensure the stability and safety of the carbonic acid synthesis reaction. This device achieves pressure regulation and redundancy through two independent pressure reducing paths and typically includes the following core structure:

[0003] 1. The valve body, as the main body of the device, has two independent media flow channels inside, corresponding to the dual pressure reducing channels respectively. Its material must be corrosion resistant to adapt to the erosion of acidic media during the preparation of carbonic acid.

[0004] 2. The pressure reducing component includes a pressure sensing diaphragm, adjusting spring, and other parts, which can automatically adjust the valve opening according to the system pressure to achieve a self-regulating pressure reducing function;

[0005] 3. The switch handle is used to manually control the opening and closing of the valve. The operator can adjust the opening of the dual-way valve by rotating the handle, thereby controlling the flow rate of gas or liquid.

[0006] 4. Sealing components are distributed at valve body interfaces, valve closure points, and other locations to prevent carbon dioxide gas leakage or the entry of external impurities, ensuring system sealing.

[0007] Currently, various design solutions have been adopted in the industry to ensure the stable operation of the carbonic acid preparation process. Some manufacturers have improved the pressure regulation accuracy by optimizing the spring stiffness and diaphragm sensitivity of the pressure reducing components; others have applied a special anti-corrosion coating to the valve body surface to enhance the corrosion resistance of the device; still others have added pressure sensors and automatic alarm systems to dual-path pressure reducing devices to monitor pressure anomalies in real time.

[0008] However, the above implementation still has the following problems: During the closing operation of the switch handle, due to the lack of a limiting structure, the valve is prone to incomplete or excessive closure. Incomplete valve closure can lead to carbon dioxide gas leakage, which not only wastes raw materials but also poses safety hazards. In addition, traditional limiting structures are mostly fixed designs. When the limiting components wear out due to long-term use or need to be adjusted according to the production process, it is difficult to perform quick maintenance and flexible adjustment. Often, the entire device needs to be disassembled, which increases maintenance costs and extends downtime, failing to meet the needs of continuous production of carbon dioxide. Therefore, it is necessary to improve the limiting structure of the switch handle of the self-operated dual-circuit pressure reducing device. By limiting the valve, the sealing surface can be fully fitted to avoid leakage due to incomplete closure, reduce the impact of vibration or impact on the closing position, and the detachable design allows direct disassembly of the limiting components without disassembling the entire valve or pipeline, thus solving the above problems. Utility Model Content

[0009] To address the shortcomings of existing technologies, this utility model provides a self-regulating dual-path pressure reducing device for carbonic acid preparation. This solves the problem that, during the switch handle closing operation, the lack of a limiting structure easily leads to incomplete or excessive valve closure. Incomplete valve closure results in carbon dioxide gas leakage, causing not only raw material waste but also safety hazards. Furthermore, traditional limiting structures are mostly fixed designs, making it difficult to perform quick maintenance and flexible adjustment when the limiting components wear down due to long-term use or when the closing position needs to be adjusted according to the production process.

[0010] To achieve the above objectives, this utility model provides the following technical solution:

[0011] A self-operated dual-path pressure reducing device for carbonic acid preparation includes a body and two supports. The body has two switch handles on its surface. A connecting frame is located on the right side of the body. Two fixed posts are fixedly connected to the surface of the connecting frame. Limiting posts are movably sleeved inside the two fixed posts. Return springs are fixedly connected to the lower surfaces of the two limiting posts. A connecting block is fixedly connected to the left surface of the connecting frame. A slot is opened on the right surface of the right support of the two supports, and the slot is movably engaged with the connecting block.

[0012] Preferably, the connecting block has two internal hexagon screws threaded onto its internal threads, both of which are threaded into the slots. The upper surfaces of the two fixing posts are provided with circular grooves, which are respectively movably connected to the two limiting posts. The two return springs are respectively fixedly connected to the two circular grooves.

[0013] Preferably, a push rod is fixedly connected to the lower surface of the two limiting posts, the push rod is movably sleeved with the two fixed posts respectively, and the two limiting posts are movably sleeved with the two switch handles respectively.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Two limit pins are reset by two return springs. The two limit pins will engage with the two switch handles after reset. The surfaces of the two switch handles have holes. At this time, the two limit pins are in a limited and fixed state, which can ensure stability when closed. The limit can force the switch handle to stay in the designed closed position, so that the valve sealing surface is completely in contact, avoiding leakage due to incomplete closure, reducing the impact of vibration or impact on the closed position, and preventing the closed position from being deviated due to accidental external force.

[0016] 2. After long-term use, the connection between the connecting frame and the bracket can be opened by turning the two Allen screws. At this time, the two fixed columns fixed on the connecting frame can be disassembled. The limit columns set inside the two fixed columns will also be disassembled. When impurities accumulate inside the limit structure or parts are worn, the detachable design allows the limit components to be disassembled directly without disassembling the valve or pipeline as a whole, shortening maintenance time and reducing production losses caused by downtime. Attached Figure Description

[0017] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Figure 1 This is an overall structural diagram of the present invention;

[0019] Figure 2 This is a structural diagram of the connecting frame of this utility model;

[0020] Figure 3 This is a structural diagram of the bracket of this utility model;

[0021] Figure 4 This is a structural diagram of the limiting column of this utility model.

[0022] Legend: 1. Body; 2. Bracket; 3. Connecting frame; 4. Fixing post; 5. Switch handle; 6. Connecting block; 7. Socket head screw; 8. Slot; 9. Limiting post; 10. Return spring; 11. Push rod; 12. Circular groove. Detailed Implementation

[0023] This application provides a self-operated dual-path pressure reducing device for carbon dioxide preparation. This effectively solves the problem of incomplete or excessive valve closure during switch handle closing operations due to the lack of a limiting structure. Incomplete valve closure leads to carbon dioxide gas leakage, causing material waste and safety hazards. Furthermore, traditional limiting structures are mostly fixed designs, making quick maintenance and flexible adjustment difficult when the limiting components wear down due to long-term use or require adjustment of the closing position according to production processes. The limiting device ensures complete sealing of the valve's sealing surface, preventing leakage due to incomplete closure and reducing the impact of vibration or impact on the closing position. The detachable design allows direct disassembly of the limiting components without the need for complete valve or pipeline disassembly. Example

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the problem that, during the closing operation of the switch handle, the lack of a limiting structure easily leads to situations where the valve is not fully closed or is over-closed. Incomplete valve closure can cause carbon dioxide gas leakage, resulting in material waste and safety hazards. Furthermore, traditional limiting structures are mostly fixed designs, making it difficult to perform quick maintenance and flexible adjustment when the limiting components wear down due to long-term use or need to be adjusted according to production processes. The overall approach is as follows:

[0025] To address the problems existing in the prior art, this utility model provides a self-operated dual-path pressure reducing device for carbonic acid preparation, comprising a body 1 and two supports 2. Two switch handles 5 are provided on the surface of the body 1. A connecting frame 3 is provided on the right side of the body 1, and two fixing posts 4 are fixedly connected to the surface of the connecting frame 3. Limiting posts 9 are movably sleeved inside each of the two fixing posts 4, and return springs 10 are fixedly connected to the lower surfaces of the two limiting posts 9. A connecting block 6 is fixedly connected to the left surface of the connecting frame 3. A slot 8 is formed on the right surface of the right support 2, and the slot 8 movably engages with the connecting block 6. During use, when it is necessary to close the switch handles 5, press them downwards. The push rod 11 moves the two fixed limit pins 9 together, compressing the two return springs 10. At this time, the switch handle 5 is closed. After closing, the two limit pins 9 are reset by the two return springs 10. The two limit pins 9 will engage with the two switch handles 5 after reset. The surfaces of the two switch handles 5 have holes. At this time, the two limit pins 9 are in a limited and fixed state, which can ensure stability when closed. The limit can force the switch handle 5 to stay in the designed closed position, so that the sealing surface of the valve is completely in contact, avoiding leakage due to incomplete closure, reducing the impact of vibration or impact on the closed position, and preventing the closed position from shifting due to accidental external force.

[0026] The connecting block 6 has two internal hexagon screws 7 threaded onto its internal threads. Both hexagon screws 7 are threaded into the slots 8. The upper surfaces of the two fixed posts 4 are each provided with a circular groove 12, which is movably connected to the two limit posts 9. Two return springs 10 are fixedly connected to the two circular grooves 12. The lower surfaces of the two limit posts 9 are fixedly connected with push rods 11, which are movably connected to the two fixed posts 4. The two limit posts 9 are movably connected to the two switch handles 5. After long-term use, the connection between the connecting frame 3 and the bracket 2 can be opened by rotating the two hexagon screws 7. At this time, the connecting frame 3 can drive the two fixed posts 4 fixed on it to be disassembled. At this time, the limit posts 9 set in the two fixed posts 4 are also disassembled. When impurities accumulate inside the limit structure or parts are worn, the detachable design allows the limit components to be directly disassembled without disassembling the valve or pipeline as a whole, shortening maintenance time and reducing production losses caused by downtime.

[0027] Among them, the main body 1 serves as the main body of the device, with a dual-channel internal structure to support various components and provide installation space. Its material is highly corrosion-resistant, adaptable to the acidic environment of carbonic acid preparation, and ensures stable operation of the device.

[0028] Bracket 2: Fixing device, providing support. The slot 8 of the right bracket 2 cooperates with the connecting block 6 to fix the connecting frame 3, ensuring the stability of the device structure and facilitating overall installation and positioning.

[0029] Connecting frame 3: Installs and fixes components such as column 4, and connects to bracket 2 through connecting block 6 and hex screw 7, so that the limiting structure is connected to the machine body 1, providing an installation base for the limiting component and ensuring the realization of the limiting function;

[0030] Fixed post 4: It is fitted with limit post 9, return spring 10, etc., to limit the movement direction of limit post 9. It cooperates with circular groove 12 to ensure that limit post 9 accurately engages with switch handle 5 after reset, thus ensuring stable closed limit.

[0031] Switch handle 5: Manually controls the opening and closing of the valve. The surface hole engages with the limit post 9. The opening is adjusted by rotation, and the limit post 9 limits it to the closed position to ensure the sealing surface fits and prevents leakage.

[0032] Connecting block 6: It engages with the slot 8 of bracket 2 and fixes the connecting frame 3 and bracket 2 with hexagonal screws 7, so that the connecting frame 3 can be detached and installed, which facilitates the overall disassembly and maintenance of the limiting structure and improves convenience;

[0033] Hex socket screw 7: Fixes the connecting block 6 and the slot 8, and fastens the connecting bracket 3 and the bracket 2. When maintenance is required, unscrew the detachable connecting bracket 3 to facilitate the disassembly of the limit structure and reduce maintenance time and cost.

[0034] Slot 8: engages with connecting block 6 and, together with internal hex screw 7, fixes connecting bracket 3, providing installation positioning for connecting bracket 3, making the limiting structure stable and easy to disassemble;

[0035] Limit post 9: engages with the surface hole of switch handle 5, forcing it to stop at the designed closed position, ensuring the sealing surface fits, preventing leakage due to incomplete closure, reducing the impact of vibration, and ensuring stable closure;

[0036] Reset spring 10: After the limit post 9 is pressed and moved, it drives the reset latch switch handle 5 to provide reset power, ensuring that the limit post 9 resets in time and ensuring the reliability of the closed limit function;

[0037] Push rod 11: Manually pressing it moves the limit post 9, compressing the reset spring 10, making it convenient for the operator to control the limit post 9 to disengage from or engage with the switch handle 5, thus realizing the closed limit operation;

[0038] Circular groove 12: Connects the limiting post 9 and the reset spring 10, limits the installation position of the reset spring 10, guides the movement of the limiting post 9, and ensures that the limiting post 9 accurately engages with the switch handle 5 after reset.

[0039] Working principle:

[0040] During operation, the high-pressure medium is throttled by the valve core of the main valve in the working circuit, reducing the pressure to the target value and flowing towards the outlet. The downstream pressure is transmitted to the lower chamber of the diaphragm of the main valve through the pressure guide pipe, counteracting the spring preload in the upper chamber of the diaphragm. If the downstream pressure increases, the diaphragm is pushed upward by the pressure in the lower chamber, causing the valve core to close slightly, reducing the flow area, and the downstream pressure drops to the set value. If the downstream pressure decreases, the spring force pushes the diaphragm downward, opening the valve core wider, increasing the flow area, and the downstream pressure rises back to the set value. The downstream pressure stabilizes within the set value fluctuation range, meeting the process requirements. The standby main valve is closed, the valve core is in the fully closed position, and there is no medium flowing in the pipeline, but it remains in a switchable state. During operation, when it is necessary to close the switch handle 5, the push rod 11 is pressed down, causing the two fixed limit pins 9 to move together, compressing the two return springs 10. At this time, the switch handle 5 is closed. After closing, the two return springs... 10 drives the two limit posts 9 to reset. The two limit posts 9 will engage with the two switch handles 5 after reset. The two switch handles 5 have holes on their surfaces. At this time, the two limit posts 9 are in a limited and fixed state, which can ensure stability when closed. The limit can force the switch handles 5 to stay in the designed closed position, so that the valve sealing surface is completely in contact, avoiding leakage due to incomplete closure, reducing the impact of vibration or impact on the closed position, and preventing the closed position from shifting due to accidental external force. After long-term use, the fixing between the connecting frame 3 and the bracket 2 can be opened by turning the two internal hex screws 7. At this time, the two fixed posts 4 fixed on the connecting frame 3 can be disassembled. At this time, the limit posts 9 set in the two fixed posts 4 are also disassembled. When impurities accumulate inside the limit structure or parts are worn, the detachable design allows the limit components to be directly disassembled without disassembling the entire valve or pipeline, shortening maintenance time and reducing production losses caused by downtime.

[0041] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A self-operated dual-path pressure reducing device for carbonic acid preparation, comprising a body (1) and two supports (2), wherein two switch handles (5) are provided on the surface of the body (1), characterized in that, A connecting frame (3) is provided on the right side of the body (1), and two fixed columns (4) are fixedly connected to the surface of the connecting frame (3). Among them, the two fixed columns (4) are movably sleeved with limit columns (9), and the lower surfaces of the two limit columns (9) are fixedly connected with reset springs (10). The left surface of the connecting frame (3) is fixedly connected with a connecting block (6).

2. The self-operated dual-path pressure reducing device for carbonic acid preparation as described in claim 1, characterized in that: The right side bracket (2) of the two brackets (2) has a slot (8) on its right surface; The slot (8) is movably engaged with the connecting block (6).

3. The self-operated dual-path pressure reducing device for carbonic acid preparation as described in claim 2, characterized in that: The connecting block (6) is threaded with two internal hexagon screws (7); Both of the internal hexagonal screws (7) are threaded into the slot (8).

4. The self-operated dual-path pressure reducing device for carbonic acid preparation as described in claim 1, characterized in that: Both of the fixed columns (4) have circular grooves (12) on their upper surfaces; The two circular grooves (12) are respectively movably connected to the two limiting posts (9).

5. A self-operated dual-path pressure reducing device for carbonic acid preparation as described in claim 4, characterized in that: The two reset springs (10) are fixedly connected to the two circular grooves (12) respectively.

6. The self-operated dual-path pressure reducing device for carbonic acid preparation as described in claim 1, characterized in that: Push rods (11) are fixedly connected to the lower surfaces of the two limiting posts (9).

7. A self-operated dual-path pressure reducing device for carbonic acid preparation as described in claim 6, characterized in that: The push rod (11) is movably connected to the two fixed posts (4) respectively.

8. A self-operated dual-path pressure reducing device for carbonic acid preparation as described in claim 1, characterized in that: The two limiting posts (9) are respectively movably connected to the two switch handles (5).

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