Pneumatic diaphragm regulating valve for blade damping machine

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a pneumatic diaphragm regulating valve for a blade damping machine, which comprises a valve seat, a valve body, a connecting seat, a first pneumatic diaphragm chamber and a second pneumatic diaphragm chamber, the valve body is fixed at the upper end of the valve seat, the connecting seat is fixed at the upper end of the valve body, the first pneumatic diaphragm chamber is fixed at the upper end of the connecting seat, and the second pneumatic diaphragm chamber is fixed at the lower end of the connecting seat. The second pneumatic membrane chamber is arranged at the upper end of the first pneumatic membrane chamber, and mounting mechanisms are arranged on the left side and the right side of the first pneumatic membrane chamber and the left side and the right side of the second pneumatic membrane chamber correspondingly. When the diaphragm is abraded due to continuous friction between the diaphragm and the first pneumatic diaphragm chamber and between the diaphragm and the second pneumatic diaphragm chamber, the diaphragm can be detached, a new diaphragm can be rapidly replaced, operation is more convenient, and the use cost is low.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a pneumatic diaphragm regulating valve for a blade rehumidifier. Background Technology

[0002] With the development of the tobacco machinery industry, the tobacco processing and leaf re-drying technologies have become more specialized, making the division of labor for processed products more detailed and clear, and improving production efficiency. The pneumatic diaphragm regulating valve is an important component of the leaf re-humidification machine.

[0003] However, existing pneumatic diaphragm control valves still have the following technical problems in use:

[0004] The diaphragm inside the current pneumatic diaphragm control valve is not convenient to disassemble and replace with the valve stem. After long-term use, the diaphragm is prone to wear due to continuous friction with the inner wall of the pneumatic diaphragm chamber, which affects the airtightness and causes the entire control valve to be damaged. The entire valve needs to be replaced, which results in a high cost of use.

[0005] Therefore, a pneumatic diaphragm regulating valve for a blade rehumidifier is proposed to solve the aforementioned problems. Utility Model Content

[0006] The purpose of this invention is to provide a pneumatic diaphragm regulating valve for a blade rehumidifier, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pneumatic diaphragm regulating valve for a blade rehumidifier, comprising a valve seat, a valve body, a connecting seat, a first pneumatic diaphragm chamber, and a second pneumatic diaphragm chamber. The valve body is fixed to the upper end of the valve seat, the connecting seat is fixed to the upper end of the valve body, the first pneumatic diaphragm chamber is fixed to the upper end of the connecting seat, and the second pneumatic diaphragm chamber is disposed above the first pneumatic diaphragm chamber. Mounting mechanisms are provided on the left and right sides of both the first and second pneumatic diaphragm chambers.

[0008] The valve seat has a through hole inside. A valve stem slides longitudinally inside the first pneumatic diaphragm chamber and the connecting seat. The upper end of the valve stem wall is located inside the first and second pneumatic diaphragm chambers and is fixed with a diaphragm by a fixing mechanism. A limit mechanism is provided inside the connecting seat on the valve stem wall.

[0009] The lower end of the valve stem is located inside the valve body and is fixed to a movable rod by a mounting ring. The movable rod is slidably connected to the lower side of the valve body, and a rubber valve core is fixed to the lower end of the movable rod.

[0010] An air inlet pipe is fixed to the upper side of the second pneumatic membrane chamber.

[0011] Preferably, the mounting mechanism includes two first mounting blocks and two second mounting blocks. The two first mounting blocks are fixedly connected to the left and right sides of the first pneumatic membrane chamber, respectively, and the two second mounting blocks are fixedly connected to the left and right sides of the second pneumatic membrane chamber, respectively. Both first mounting blocks are fixedly connected to the second mounting blocks by bolts.

[0012] Preferably, the fixing mechanism includes two pressure plates, which are sleeved on the outside of the valve stem and located at the upper and lower ends of the diaphragm, respectively. The upper end of the valve stem wall is provided with an external thread, and the external thread of the valve stem is connected to symmetrical nuts. The sidewalls of the two nuts are in contact with the sidewalls of the pressure plates.

[0013] Preferably, a sealing ring is fixed on the side of the first pneumatic membrane chamber and the second pneumatic membrane chamber that are close to each other.

[0014] Preferably, the limiting mechanism includes a limiting block, which is fixed to the outside of the valve stem and slidably connected to the inner wall of the connecting seat. A spring is sleeved on the outside of the valve stem, the lower end of the spring is fixedly connected to the upper side of the limiting block, and the upper end of the spring is fixedly connected to the upper end of the inner wall of the connecting seat.

[0015] Preferably, the rubber valve core is adapted to the through hole.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] In this application, the diaphragm is fixed to the outside of the valve stem by the cooperation of the pressure plate and the nut. During long-term use, when the diaphragm wears down due to continuous friction between the first pneumatic diaphragm chamber and the second pneumatic diaphragm chamber, the diaphragm can be disassembled and a new diaphragm can be quickly replaced, making the operation more convenient and the cost of use lower. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0020] Figure 3 This is a cross-sectional view of the diaphragm;

[0021] Figure 4 This is a schematic diagram of the pressure plate structure.

[0022] In the diagram: 1 Valve seat, 2 Valve body, 3 Connecting seat, 4 First pneumatic diaphragm chamber, 5 Second pneumatic diaphragm chamber, 6 Valve stem, 7 Diaphragm, 8 Mounting ring, 9 Moving rod, 10 Rubber valve core, 11 Air inlet pipe, 12 First mounting block, 13 Second mounting block, 14 Pressure plate, 15 Nut, 16 Sealing ring, 17 Limiting block, 18 Spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Example:

[0026] Please see Figure 1-4 This utility model provides a technical solution:

[0027] A pneumatic diaphragm regulating valve for a blade rehumidifier includes a valve seat 1, a valve body 2, a connecting seat 3, a first pneumatic diaphragm chamber 4, and a second pneumatic diaphragm chamber 5. The valve body 2 is fixed to the upper end of the valve seat 1, the connecting seat 3 is fixed to the upper end of the valve body 2, the first pneumatic diaphragm chamber 4 is fixed to the upper end of the connecting seat 3, and the second pneumatic diaphragm chamber 5 is disposed above the first pneumatic diaphragm chamber 4. Mounting mechanisms are provided on the left and right sides of both the first pneumatic diaphragm chamber 4 and the second pneumatic diaphragm chamber 5. The mounting mechanisms can connect and fix the first pneumatic diaphragm chamber 4 and the second pneumatic diaphragm chamber 5, and facilitate the separation of the first pneumatic diaphragm chamber 4 and the second pneumatic diaphragm chamber 5.

[0028] The valve seat 1 has a through hole inside. The valve stem 6 slides longitudinally inside the first pneumatic diaphragm chamber 4 and the connecting seat 3. The upper end of the valve stem 6 is located inside the first pneumatic diaphragm chamber 4 and the second pneumatic diaphragm chamber 5 and is fixed to the diaphragm 7 by a fixing mechanism. The edge of the diaphragm 7 fits against the inner wall of the first pneumatic diaphragm chamber 4 and the second pneumatic diaphragm chamber 5 to ensure airtightness. The valve stem 6 is located inside the connecting seat 3 and is provided with a limiting mechanism. When there is no airflow pressure at the upper end of the diaphragm 7, the limiting mechanism can drive the valve stem 6, the moving rod 9 and the rubber valve core 10 to return to their original positions.

[0029] The lower end of the valve stem 6 is located inside the valve body 2 and is fixed with a movable rod 9 by a mounting ring 8. The movable rod 9 is slidably connected to the lower side of the valve body 2, and a rubber valve core 10 is fixed at the lower end of the movable rod 9.

[0030] An air inlet pipe 11 is fixed on the upper side of the second pneumatic membrane chamber 5, and the air inlet pipe 11 is connected and fixed to an external air supply device.

[0031] The mounting mechanism includes two first mounting blocks 12 and two second mounting blocks 13. The two first mounting blocks 12 are fixedly connected to the left and right sides of the first pneumatic membrane chamber 4, respectively, and the two second mounting blocks 13 are fixedly connected to the left and right sides of the second pneumatic membrane chamber 5, respectively. Both first mounting blocks 12 are fixedly connected to the second mounting blocks 13 by bolts.

[0032] The fixing mechanism includes two pressure plates 14, which are sleeved on the outside of the valve stem 6 and located at the upper and lower ends of the diaphragm 7, respectively. The upper end of the valve stem 6 has an external thread, and the external thread of the valve stem 6 is connected to symmetrical nuts 15. The side walls of the two nuts 15 are in contact with the side walls of the pressure plates 14. When the diaphragm 7 is worn, the diaphragm 7 can be quickly disassembled and replaced, reducing the cost of use.

[0033] A sealing ring 16 is fixed on the side of the first pneumatic membrane chamber 4 and the second pneumatic membrane chamber 5 that are close to each other, so as to ensure the sealing effect between the first pneumatic membrane chamber 4 and the second pneumatic membrane chamber 5.

[0034] The limiting mechanism includes a limiting block 17, which is fixed to the outside of the valve stem 6 and slidably connected to the inner wall of the connecting seat 3. A spring 18 is sleeved on the outside of the valve stem 6. The lower end of the spring 18 is fixedly connected to the upper side of the limiting block 17, and the upper end of the spring 18 is fixedly connected to the upper end of the inner wall of the connecting seat 3.

[0035] The rubber valve core 10 is adapted to the through hole, and the flow rate of liquid or gas inside the through hole is controlled by the degree of clamping between the rubber valve core 10 and the through hole.

[0036] Working principle:

[0037] When in use, the air inlet pipe 11 is connected to an external air supply device. The airflow enters the interior of the first pneumatic diaphragm chamber 4 and the second pneumatic diaphragm chamber 5, causing the internal diaphragm 7 to move downward. The diaphragm 7 causes the valve stem 6 to move downward. The valve stem 6 causes the lower moving rod 9 and the rubber valve core 10 to move downward. The flow rate is adjusted by the cross-sectional fit between the rubber valve core 10 and the through hole.

[0038] When the diaphragm 7 is damaged due to prolonged use, the first pneumatic membrane chamber 4 and the second pneumatic membrane chamber 5 can be opened to disassemble the internal diaphragm 7 and replace it with a new diaphragm 7, ensuring that the edge of the diaphragm 7 fits tightly with the first pneumatic membrane chamber 4 and the second pneumatic membrane chamber 5.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic diaphragm regulating valve for a blade rehumidifier, comprising a valve seat (1), a valve body (2), a connecting seat (3), a first pneumatic diaphragm chamber (4), and a second pneumatic diaphragm chamber (5), characterized in that, The valve body (2) is fixed to the upper end of the valve seat (1), the connecting seat (3) is fixed to the upper end of the valve body (2), the first pneumatic diaphragm chamber (4) is fixed to the upper end of the connecting seat (3), the second pneumatic diaphragm chamber (5) is located at the upper end of the first pneumatic diaphragm chamber (4), and the first pneumatic diaphragm chamber (4) and the second pneumatic diaphragm chamber (5) are provided with mounting mechanisms on the left and right sides; The valve seat (1) has a through hole inside. The valve stem (6) slides longitudinally inside the first pneumatic diaphragm chamber (4) and the connecting seat (3). The upper end of the valve stem (6) is located inside the first pneumatic diaphragm chamber (4) and the second pneumatic diaphragm chamber (5) and is fixed with a diaphragm (7) by a fixing mechanism. The valve stem (6) is located inside the connecting seat (3) and is provided with a limit mechanism. The lower end of the valve stem (6) is located inside the valve body (2) and a movable rod (9) is fixed thereon by the mounting ring (8). The movable rod (9) is slidably connected to the lower side of the valve body (2). A rubber valve core (10) is fixed at the lower end of the movable rod (9). An air inlet pipe (11) is fixed on the upper side of the second pneumatic membrane chamber (5).

2. The pneumatic diaphragm regulating valve for a blade rehumidifier according to claim 1, characterized in that: The installation mechanism includes two first mounting blocks (12) and two second mounting blocks (13). The two first mounting blocks (12) are fixedly connected to the left and right sides of the first pneumatic membrane chamber (4) respectively, and the two second mounting blocks (13) are fixedly connected to the left and right sides of the second pneumatic membrane chamber (5) respectively. The two first mounting blocks (12) are fixedly connected to the second mounting blocks (13) by bolts.

3. The pneumatic diaphragm regulating valve for a blade rehumidifier according to claim 1, characterized in that: The fixing mechanism includes two pressure plates (14), which are sleeved on the outside of the valve stem (6) and located at the upper and lower ends of the diaphragm (7), respectively. The upper end of the valve stem (6) is provided with an external thread, and the external thread of the valve stem (6) is connected to symmetrical nuts (15). The side walls of the two nuts (15) are in contact with the side walls of the pressure plates (14).

4. The pneumatic diaphragm regulating valve for a blade rehumidifier according to claim 1, characterized in that: A sealing ring (16) is fixed on the side of the first pneumatic membrane chamber (4) and the second pneumatic membrane chamber (5) that are close to each other.

5. A pneumatic diaphragm regulating valve for a blade rehumidifier according to claim 1, characterized in that: The limiting mechanism includes a limiting block (17), which is fixed to the outside of the valve stem (6) and slidably connected to the inner wall of the connecting seat (3). A spring (18) is sleeved on the outside of the valve stem (6). The lower end of the spring (18) is fixedly connected to the upper side of the limiting block (17), and the upper end of the spring (18) is fixedly connected to the upper end of the inner wall of the connecting seat (3).

6. The pneumatic diaphragm regulating valve for a blade rehumidifier according to claim 1, characterized in that: The rubber valve core (10) is adapted to the through hole.

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