Multi-section assembly type pneumatic pipe clamp valve

Abstract

The utility model relates to the technical field of conveying pipelines, and discloses a multi-section assembly type pneumatic pipe clamp valve which comprises a valve body, fixing pipes are fixedly connected to the left side and the right side of the exterior of the valve body, sealing rings are fixedly connected to the exteriors of the fixing pipes, fixing rods are fixedly connected to the interiors of the sealing rings, and the fixing rods are fixedly connected to the interiors of the fixing pipes. And limiting rings are fixedly connected to the left side and the right side of the exterior of the fixing rod, flange plates are fixedly connected to the left side and the right side of the exterior of the fixing rod, butt joint mechanisms are fixedly connected to the exteriors of the flange plates, and a protection mechanism is fixedly connected to the interior of the valve body. According to the device, the rotating plate can extrude the first telescopic rod by pressing the rotating plate, so that the first spring deforms, then the rotating plate drives the clamping rod to be separated from the interior of the rubber pipe, and when the rubber pipe is installed, the rotating plate is loosened, so that the first spring rebounds, and then the rubber pipe is installed. And then the rotating plate drives the clamping rod to be clamped with the rubber pipe.

Description

Technical Field

[0001] This utility model relates to the field of pipeline technology, and in particular to a multi-section assembled pneumatic clamp valve. Background Technology

[0002] In chemical production, corrosive liquids or gases, such as strong acids and alkalis, are frequently encountered. Multi-stage assembled pneumatic pinch valves utilize corrosion-resistant materials like rubber for their valve bodies, effectively resisting chemical corrosion. For example, in the chlor-alkali industry, pipeline systems used to transport sodium hydroxide solution and chlorine gas can operate stably for extended periods using this type of valve. Furthermore, through multi-stage assembly, complex chemical pipeline networks can be constructed to meet the needs of various chemical reactions and material transport.

[0003] A search revealed a multi-segment assembled pneumatic clamp valve (publication number CN209876047U), comprising a valve body and a hose. The valve body includes an upper valve body, a lower valve body, and an air inlet pipe. The lower valve body is located at the bottom of the upper valve body, and the upper and lower valve bodies have the same structure. Fixing blocks are provided on both sides of the upper and lower valve bodies, and connecting rings are provided at both ends of the upper and lower valve bodies. An air inlet pipe is located at the top of the upper valve body, penetrating the outer wall of the upper valve body and connecting to its interior. Sealing grooves are symmetrically provided at the bottom of the upper valve body and the top of the lower valve body, and sealing strips are fixed in the sealing grooves. This utility model divides the valve body into upper and lower valve bodies, facilitating installation and disassembly. At the same time, the hose is directly connected to the valve body, improving the overall reliability of the hose and preventing the hose from falling off and causing danger when the pneumatic clamp valve is shut off.

[0004] The aforementioned patent mentions "including the valve body and the rubber hose." Typically, the rubber hose will wear out and age after prolonged use, requiring replacement. If the multi-stage assembled pneumatic clamp valve cannot be installed and connected to the rubber hose, then maintenance and replacement of the rubber hose cannot be carried out. This not only affects the valve's service life but also causes the entire pipeline system to malfunction due to damage to the rubber hose. Therefore, to address the above-mentioned problems, a multi-stage assembled pneumatic clamp valve is proposed. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a multi-section assembled pneumatic pipe clamp valve, which aims to improve the problem that some devices in the prior art cannot install and connect rubber hoses.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A multi-stage assembled pneumatic clamp valve includes a valve body. Fixed pipes are fixedly connected to the left and right sides of the valve body. A sealing ring is fixedly connected to the outside of the fixed pipe. A fixed rod is fixedly connected to the inside of the sealing ring. Limiting rings are fixedly connected to the left and right sides of the fixed rod. Flanges are fixedly connected to the left and right sides of the fixed rod. A docking mechanism is fixedly connected to the outside of the flanges. A protective mechanism is fixedly connected to the inside of the valve body.

[0008] The docking mechanism includes a fixed frame, a connecting shaft is fixedly connected inside the fixed frame, a rotating plate is rotatably connected to the outside of the connecting shaft, a locking rod is fixedly connected to the right side of the outside of the rotating plate, a spring-loaded assembly is fixedly connected to the left side of the outside of the rotating plate, and the bottom of the fixed frame is fixedly connected to the outer perimeter of the flange.

[0009] As a further description of the above technical solution:

[0010] The rebound assembly includes a telescopic rod, a spring is sleeved on the outside of the telescopic rod, and the outside of the telescopic rod is fixedly connected to the left side of the rotating plate.

[0011] As a further description of the above technical solution:

[0012] The protective mechanism includes a fixed plate, a cylinder is fixedly connected to the top of the fixed plate, a clamping plate is fixedly connected to the drive end of the cylinder, telescopic rods are fixedly connected to the front and rear sides of the clamping plate, a spring is sleeved on the outside of the telescopic rods, a rubber ring is fixedly connected to the top of the telescopic rods, and the outside of the fixed plate is fixedly connected to the top of the valve body.

[0013] As a further description of the above technical solution:

[0014] Limiting rods are fixedly connected to both the front and rear sides of the valve body, and the rubber ring is slidably connected to the outside of the limiting rods.

[0015] As a further description of the above technical solution:

[0016] A connecting rod is fixedly connected to the top of the limiting rod, and the connecting rod is externally fixedly connected to the front and rear ends of the fixing plate;

[0017] As a further description of the above technical solution:

[0018] A rubber tube is fixedly connected inside the fixed tube, the outside of the clamp plate is in contact with the outside of the rubber tube, and the bottom end of the clamping rod is engaged with the outside of the rubber tube.

[0019] As a further description of the above technical solution:

[0020] The rotating plate is externally rotatably connected to the inside of the fixed frame, and the clamping rod is externally rotatably connected to the inside of the fixed frame;

[0021] As a further description of the above technical solution:

[0022] One end of the spring is fixedly connected to the bottom outer end of the rotating plate, and the other end of the spring is fixedly connected to the top outer end of the fixed frame.

[0023] The beneficial effects of this utility model are as follows:

[0024] (1) This utility model uses a rotating plate to press and compress the telescopic rod, causing the spring to deform. This causes the rotating plate to pull the clamping rod away from the rubber tube. When installing the rubber tube, releasing the rotating plate causes the spring to rebound, which in turn causes the rotating plate to clamp the clamping rod to the rubber tube. Because the installation and maintenance process is simple, it does not require a large amount of manpower or complex equipment, and the corresponding cost is also low. The combination of the clamp valve and the rubber tube effectively controls the overall cost of the equipment, including purchase cost, installation cost and maintenance cost, while meeting production needs.

[0025] (2) This utility model uses a cylinder to drive the clamping plates to squeeze the rubber tube in the center, causing the liquid or gas inside the rubber tube to stop being transported. When the two clamping plates squeeze, the two rubber rings first come into contact, and then the rubber rings squeeze the telescopic rod two, causing the spring two to deform. The spring two can then drive the rubber rings to protect the clamping plates. The protected clamping plates can more stably squeeze the rubber tube. Because its surface is smoother, it achieves a better sealing effect when clamping the rubber tube.

[0026] In summary, this utility model has advantages such as docking and sealing. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the multi-segment assembled pneumatic clamp valve proposed in this utility model;

[0028] Figure 2 This is a schematic diagram of the connecting rod of the multi-segment assembled pneumatic pipe clamp valve proposed in this utility model;

[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 for Figure 2 Enlarged view of point B in the middle. Detailed Implementation

[0031] 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.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Example

[0034] Reference Figures 1 to 3This utility model provides an embodiment of a multi-section assembled pneumatic pinch valve, including a valve body 1. The valve body 1, as the core component of the entire pneumatic pinch valve, is typically made of a metal or engineering plastic with high strength, corrosion resistance, and good sealing performance. Fixed pipes 2 are fixedly connected to the left and right sides of the valve body 1. These fixed pipes 2 serve as important transitional components connecting the valve body 1 to the external piping system. Their material is compatible with the valve body 1 or is made of a metal material with good welding and sealing performance. For example, stainless steel pipes are typically used with stainless steel valve bodies 1, while carbon steel pipes are more common with carbon steel valve bodies 1. A sealing ring 3 is fixedly connected to the outside of the fixed pipe 2. The sealing ring 3, as a key component ensuring the sealing performance of the connection between the valve and the pipeline, is generally made of rubber or plastic, materials with good elasticity and sealing performance. Rubber sealing rings 3 include nitrile rubber, fluororubber, or silicone rubber. Nitrile rubber sealing rings 3 have good oil resistance, wear resistance, and sealing performance, making them suitable for sealing most petroleum-based oils, lubricating oils, and other media. The sealing ring 3 is internally fixedly connected to a fixing rod 4. The fixing rod 4 is an important supporting component connecting the sealing ring 3 and other components. Its material is generally metal, such as stainless steel or aluminum alloy. Stainless steel fixing rod 4 has high strength and corrosion resistance, can work stably under various environmental conditions, and has a high surface finish, resulting in less friction with the sealing ring 3 and other components, which is beneficial to improving the overall integrity of the valve. Limiting rings 21 are fixedly connected to the left and right sides of the outside of the fixing rod 4. The shape of the limiting ring 21 is usually circular. Its outer diameter is determined according to the installation position of the fixing rod 4 and the requirements of the mating components. It is generally slightly smaller than the hole diameter at the location of the fixing rod 4 to ensure that it can play a good limiting role. Its thickness is determined according to the required strength and stability, and is generally between a few millimeters and a few centimeters.

[0035] Flanges 5 are fixedly connected to both the left and right sides of the fixed rod 4. These flanges 5 serve as important interface components connecting the valve to external pipelines or other equipment, and are generally made of metal, such as carbon steel, stainless steel, or alloy steel. Carbon steel flanges 5 are relatively inexpensive, possess certain strength and toughness, and are suitable for applications where pressure and corrosion requirements are not high. A mating mechanism is fixedly connected to the outside of the flanges 5, and a protective mechanism is fixedly connected to the inside of the valve body 1. This protective mechanism effectively protects critical internal components of the valve from the impact, corrosion, and wear of the fluid medium, extending the valve's service life and improving its reliability. The protective mechanism includes a fixed plate 13, which serves as the base platform for installing and fixing the cylinder 14 and other protective components. Its material is generally metal, such as stainless steel or aluminum alloy. The stainless steel fixing plate 13 has high strength and corrosion resistance, enabling it to work stably for a long time in the harsh environment inside the valve. Its high surface finish facilitates the installation and fixing of other components. A cylinder 14 is fixedly connected to the top of the fixing plate 13. The cylinder 14 serves as the power source for driving the valve's clamping action. It is generally a pneumatic piston cylinder 14 or a pneumatic diaphragm cylinder 14, selected according to the valve's design requirements and operating conditions. The pneumatic piston cylinder 14 features high output force, long stroke, and fast movement speed, making it suitable for valves requiring large clamping forces and long strokes, such as clamp valves in large pipelines and high-pressure fluid systems. A clamping plate 16 is fixedly connected to the drive end of the cylinder 14. The clamping plate 16 is the component that directly contacts the pipeline and performs the clamping action. Its material is generally metal, such as stainless steel or aluminum alloy, and its surface is usually specially treated, such as chrome plating or spraying a wear-resistant coating, to improve its wear resistance and corrosion resistance. Telescopic rods 18 are fixedly connected to both the front and rear sides of the clamping plate 16.

[0036] The telescopic rod 18 is generally cylindrical in shape. Its diameter is determined according to the movement requirements and required strength of the clamping plate 16, typically ranging from a few millimeters to tens of millimeters. Its length is determined according to the stroke requirements of the clamping plate 16, usually ranging from a few centimeters to tens of centimeters. A spring 19 is fitted around the telescopic rod 18. The spring 19 is made of high-quality spring steel, and its elastic coefficient is precisely calculated and designed based on factors such as the required buffering force, clamping force, and valve operating frequency of the clamping plate 16. This ensures that it provides appropriate buffering support for the clamping plate 16 under various working conditions. When the cylinder 14 drives the clamping plate 16 to clamp the pipe, the spring 19 is compressed, storing elastic potential energy. The spring 19 automatically adjusts its position according to its elastic coefficient and compression amount. The force of the clamping plate 16 acts as a buffer, reducing the impact force when clamping the pipe and protecting the internal components of the pipe and valve. When the cylinder 14 drives the clamping plate 16 to release the pipe, the spring 19 can release elastic potential energy, allowing the clamping plate 16 to return to its initial position, preparing for the next clamping action. The outer top of the telescopic rod 18 is fixedly connected to a rubber ring 20. The shape of the rubber ring 20 is usually circular, and its outer diameter is determined according to the outer diameter of the telescopic rod 18 and the installation position. It is generally slightly larger than the outer diameter of the telescopic rod 18 to ensure that it can fit tightly on the relevant components. Its thickness is determined according to the required sealing pressure and buffering effect, and is generally between a few millimeters and a few centimeters. The fixed plate 13 is externally fixedly connected to the top of the valve body 1.

[0037] The docking mechanism includes a fixed frame 6, which serves as the basic support structure for the entire docking mechanism, undertaking the important task of connecting and fixing other components. Its material is typically a high-strength metal, such as carbon steel or stainless steel. The carbon steel fixed frame 6 has high strength and good machinability, allowing it to be easily processed into various shapes and sizes according to design requirements. Its cost is relatively low, making it commonly used in valve docking mechanism designs where cost control is strict. Internally, the fixed frame 6 is fixedly connected to a connecting shaft 7, which serves as the rotation center shaft of the rotating plate 8. Its material is generally high-strength alloy steel or stainless steel. The alloy steel connecting shaft 7 possesses excellent comprehensive mechanical properties, including strength, etc. It exhibits excellent toughness and wear resistance, and can withstand the large torque and impact force generated by the rotating plate 8 during rotation, avoiding bending or breakage during long-term use; the external rotating connection of the connecting shaft 7 is the rotating plate 8. As the transmission and conversion component in the docking mechanism, the rotating plate 8 plays a key role in the valve docking process. Its material is generally metal plate or metal rod, such as aluminum alloy plate or stainless steel rod. The aluminum alloy rotating plate 8 has the characteristics of light weight and high strength, which makes it easy to rotate flexibly under the drive of the connecting shaft 7, reducing the impact of its own weight on the motion performance of the entire docking mechanism. At the same time, its good processing performance makes it easy to process into various shapes and sizes according to design requirements;

[0038] A locking rod 9 is fixedly connected to the outer right side of the rotating plate 8. The locking rod 9 is a key component for locking the valve to external pipes or equipment. Its material is generally metal, such as stainless steel or alloy steel. Stainless steel locking rod 9 has good corrosion resistance and a certain strength, enabling it to work stably for a long time in the valve's working environment. A spring-loaded assembly is fixedly connected to the outer left side of the rotating plate 8. After the valve docking operation is completed, the spring-loaded assembly provides a restoring force to the rotating plate 8, returning it to its initial position and preparing it for the next docking operation. The spring-loaded assembly includes a telescopic rod 10, which serves as a guide and support component. Its material is generally metal, such as stainless steel or aluminum alloy. Stainless steel telescopic rod 10 has high strength and corrosion resistance, enabling it to work stably for a long time in the harsh environment inside the valve. A spring 11 is sleeved on the outside of the telescopic rod 10. The spring 11 plays a key role in providing elastic force and achieving the restoring function in the spring-loaded assembly. Spring 11 is made of high-quality spring steel. Its elastic coefficient is precisely calculated and designed based on factors such as the rotational inertia of the rotating plate 8, the required reset force, and the working frequency of the valve, so as to ensure that it can provide just the right reset force support for the rotating plate 8 under various working conditions. The telescopic rod 10 is externally fixedly connected to the left side of the rotating plate 8, and the bottom of the fixing bracket 6 is fixedly connected to the outer perimeter of the flange 5. Example

[0039] Reference Figures 3 to 4 Limit rods 17 are fixedly connected to both the front and rear sides of the valve body 1. The limit rods 17 play a crucial guiding and stabilizing role in the overall valve structure. They are typically made of high-strength, corrosion-resistant stainless steel. The stainless steel limit rods 17 can withstand significant pressure and friction, ensuring they do not deform or break during long-term valve operation. Furthermore, their high surface finish effectively reduces the coefficient of friction with other components, ensuring smooth movement of all parts. A rubber ring 20 is internally slidably connected to the outside of the limit rods 17. A connecting rod 15 is fixedly connected to the top of the limit rods 17. The connecting rod 15 acts as a bridge connecting the limit rods 17 and the fixed plate 13. Its material is generally the same as the limit rods 17, made of stainless steel, to ensure... To ensure the strength and corrosion resistance of the entire structure, the connecting rod 15 is externally fixed to the front and rear ends of the fixing plate 13, and the fixing tube 2 is internally fixed to a rubber tube 12. As a key component that directly contacts the fluid medium inside the valve, the choice of material for the rubber tube 12 is crucial. Usually, rubber materials with good corrosion resistance, flexibility and sealing performance, such as EPDM rubber, are selected. The rubber tube 12 has excellent weather resistance, ozone resistance and chemical corrosion resistance, and can work stably in different climatic conditions and various chemical media environments. It is widely used in general industrial fluid transportation as well as municipal water supply and drainage.

[0040] The outer side of the clamping plate 16 contacts the outer side of the rubber tube 12. When the valve is working, when the cylinder 14 drives the clamping plate 16 to move, the clamping plate 16 will tightly clamp the rubber tube 12. The flow of fluid medium is controlled by changing the shape of the rubber tube 12. The clamping force is determined according to the valve's pressure rating and sealing requirements, generally ranging from tens of Newtons to thousands of Newtons. The clamping force is precisely controlled by adjusting the air pressure of the cylinder 14 to meet the valve control requirements under different working conditions. The outer bottom end of the clamping rod 9 engages with the outer side of the rubber tube 12. The outer side of the rotating plate 8 is rotatably connected to the inside of the fixed frame 6. The external rotating connection is inside the fixed frame 6. One end of the spring 11 is fixedly connected to the bottom of the outer side of the rotating plate 8, and the other end of the spring 11 is fixedly connected to the top of the outer side of the fixed frame 6. After the docking operation is completed, the spring 11 will release elastic potential energy, causing the rotating plate 8 to return to its initial position, driving the locking rod 9 to separate from the rubber tube 12, preparing for the next docking operation. Through the action of the spring 11, the automatic reset function of the rotating plate 8 and the locking rod 9 is realized, which improves the operation convenience and reliability of the valve docking mechanism, reduces the need for manual intervention, and also extends the service life of the valve docking mechanism.

[0041] Step 1: When connecting the rubber tube 12, press the rotating plate 8. Under the action of the rotating plate 8, the rotating plate 8 will squeeze the telescopic rod 10. Under the action of the telescopic rod 10, the spring 11 will deform. Then, the rotating plate 8 will drive the locking rod 9 to disengage from the inside of the rubber tube 12. When installing the rubber tube 12, release the rotating plate 8. The spring 11 will rebound. Then, the rotating plate 8 will drive the locking rod 9 to lock with the rubber tube 12, thus realizing the connection of the rubber tube 12.

[0042] Step 2: When protecting the clamping plate 16, the cylinder 14 is activated, causing the cylinder 14 to drive the clamping plate 16 to squeeze the rubber tube 12 in the center, so that the liquid or gas inside the rubber tube 12 stops being transported. When the two clamping plates 16 are squeezed, the two rubber rings 20 first come into contact, and then the rubber rings 20 squeeze the telescopic rod 18. Under the action of the telescopic rod 18, the spring 19 deforms, so that the spring 19 can drive the rubber rings 20 to protect the clamping plate 16.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage assembled pneumatic clamp valve, comprising a valve body (1), characterized in that: The valve body (1) is fixedly connected to the left and right sides of the outside of the valve body (1). The outside of the fixed pipe (2) is fixedly connected to the sealing ring (3). The inside of the sealing ring (3) is fixedly connected to the fixing rod (4). The outside of the fixing rod (4) is fixedly connected to the left and right sides of the valve body (1). The outside of the fixing rod (4) is fixedly connected to the flange (5). The outside of the flange (5) is fixedly connected to the docking mechanism. The inside of the valve body (1) is fixedly connected to the protective mechanism. The docking mechanism includes a fixing frame (6). The inside of the fixing frame (6) is fixedly connected to the connecting shaft (7). The outside of the connecting shaft (7) is rotatably connected to the rotating plate (8). The outside right side of the rotating plate (8) is fixedly connected to the locking rod (9). The outside left side of the rotating plate (8) is fixedly connected to the spring assembly. The outside bottom end of the fixing frame (6) is fixedly connected to the outside of the flange (5).

2. The multi-section assembled pneumatic clamp valve according to claim 1, characterized in that: The rebound assembly includes a telescopic rod (10), and a spring (11) is sleeved on the outside of the telescopic rod (10). The telescopic rod (10) is fixedly connected to the outside left side of the rotating plate (8).

3. The multi-section assembled pneumatic clamp valve according to claim 1, characterized in that: The protective mechanism includes a fixed plate (13), a cylinder (14) is fixedly connected to the top of the fixed plate (13), a clamping plate (16) is fixedly connected to the drive end of the cylinder (14), a telescopic rod (18) is fixedly connected to both the front and rear sides of the clamping plate (16), a spring (19) is sleeved on the outside of the telescopic rod (18), a rubber ring (20) is fixedly connected to the top of the telescopic rod (18), and the outside of the fixed plate (13) is fixedly connected to the top of the valve body (1).

4. The multi-stage assembled pneumatic clamp valve according to claim 3, characterized in that: Limiting rods (17) are fixedly connected to both the front and rear sides of the valve body (1), and the rubber ring (20) is slidably connected to the outside of the limiting rods (17).

5. The multi-section assembled pneumatic clamp valve according to claim 4, characterized in that: The top of the limiting rod (17) is fixedly connected to a connecting rod (15), and the connecting rod (15) is externally fixedly connected to the front and rear ends of the fixing plate (13).

6. The multi-stage assembled pneumatic clamp valve according to claim 3, characterized in that: A rubber tube (12) is fixedly connected inside the fixed tube (2). The outside of the clamp (16) is in contact with the outside of the rubber tube (12). The bottom of the outside of the clamp (9) is engaged with the outside of the rubber tube (12).

7. The multi-stage assembled pneumatic clamp valve according to claim 1, characterized in that: The external rotating plate (8) is rotatably connected to the inside of the fixed frame (6), and the external rotatably connected to the inside of the fixed frame (6) is the locking rod (9).

8. The multi-stage assembled pneumatic clamp valve according to claim 2, characterized in that: One end of the spring (11) is fixedly connected to the bottom outer end of the rotating plate (8), and the other end of the spring (11) is fixedly connected to the top outer end of the fixed frame (6).

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