Sealing butterfly valve suitable for low-temperature environment

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a sealing butterfly valve applicable to a low-temperature environment, which comprises a liquid discharge pipe mounted on one side of a valve casing and a valve core rotatably connected with the inside of the valve casing, a rotating mechanism capable of automatically rotating and locking the valve core is arranged on the valve casing, and a filtering mechanism for filtering impurities is arranged in the liquid discharge pipe. By arranging the rotating mechanism, automatic rotation of the valve element can be achieved, opening and closing of the valve element can be accurately controlled, the automation degree is improved, the labor intensity of workers is relieved, the flow of liquid can be controlled, the reliability and safety of working of the valve in the low-temperature environment are enhanced through the locking structure, and the filtering mechanism is arranged, so that the filtering effect is improved. Impurities in the liquid discharge pipe can be connected, blockage is prevented, the filter screen can be rapidly and conveniently disassembled and assembled, the service life of the filter structure can be prolonged by adopting special materials, the stable filter function in the low-temperature environment is guaranteed, and the overall performance of the valve is improved.

Description

Technical Field

[0001] This utility model relates to the field of butterfly valve technology, and in particular to a sealing butterfly valve suitable for low-temperature environments. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve that can be used for the on / off control of low-pressure pipeline media. In the current technology, a butterfly valve generally includes a valve body, a valve core, and a valve stem. The valve core is controlled by rotating the valve stem, thereby controlling the on / off state of the butterfly valve.

[0003] In low-temperature conditions, existing butterfly valves have significant shortcomings in valve core rotation control. Their automation level is low, relying primarily on manual operation for valve core opening, closing, and adjustment. This is not only labor-intensive and cumbersome, but also makes it difficult to achieve rapid and accurate control in low-temperature environments. Consequently, the control precision cannot meet the demands of complex operating conditions. Furthermore, existing butterfly valves generally lack a reliable locking structure, making the valve core prone to positional displacement under the influence of low temperatures. This can easily compromise the valve's sealing performance, leading to media leakage risks and potential safety hazards. Therefore, we provide a sealing butterfly valve suitable for low-temperature environments. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a sealing butterfly valve suitable for low-temperature environments. It solves the technical problem that existing butterfly valves are not easy to accurately control the opening and closing of the valve core in low-temperature environments, thus reducing the valve's sealing performance. It achieves automatic and accurate control of the rotating valve core, thereby improving the reliability and safety of valve operation in low-temperature environments.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a sealing butterfly valve suitable for low-temperature environments, including a drain pipe installed on one side of the valve body and a valve core rotatably connected to the inside of the valve body. The valve body is provided with a rotating mechanism for automatically rotating and locking the valve core, and the drain pipe is provided with a filtering mechanism for filtering impurities.

[0006] The rotating mechanism includes a fixed seat mounted on the top of the valve body, a side seat mounted on the top of the fixed seat, a waterproof motor mounted on the side of the side seat, a bevel gear one mounted on the output end of the waterproof motor, a rotating rod rotatably connected inside the side seat, a bevel gear two meshing with bevel gear one mounted on one end of the rotating rod, a movable seat threadedly connected to the outer wall of the rotating rod, a rack penetrating the side seat mounted on the movable seat, a rotating gear penetrating the fixed seat and meshing with the rack mounted on the top of the valve core, a cylinder mounted on the other side of the fixed seat, and a locking element meshing with the rack mounted on the cylinder.

[0007] Preferably, the filtration mechanism includes a fixing ring installed on the inner wall of the drain pipe, a plurality of inserts are installed on the fixing ring, an installation ring connected to the inserts is movably installed on the fixing ring, a fixing bolt is connected to the inserts, a handle is installed on the outside of the installation ring, and a filter screen is installed inside the installation ring.

[0008] Preferably, reinforcing steel bars are installed on both sides of the valve core, and a heat compensation gasket is provided at the connection between the valve body and the drain pipe.

[0009] Preferably, the cylinder applies axial pressure to the rack through a locking element, and the rack and the locking element are on the same horizontal plane.

[0010] Preferably, the inserts are arranged in a triangular pattern on the outside of the fixing ring, and the mounting ring is fixed to the inserts by fixing bolts.

[0011] Preferably, the inner and outer surfaces of the fixing ring and the mounting ring are provided with an anti-rust coating, and the filter screen is a stainless steel perforated mesh.

[0012] By employing the above technical solution, this utility model provides a sealing butterfly valve suitable for low-temperature environments, which has at least the following beneficial effects:

[0013] 1. This utility model, by setting a rotating mechanism, can realize the automatic rotation of the valve core, accurately control the valve core opening and closing, improve the degree of automation, reduce the labor intensity of the staff, control the flow of liquid, and the locking structure enhances the reliability and safety of valve operation in low temperature environments.

[0014] 2. This utility model, by setting up a filtration mechanism, can connect impurities inside the drain pipe to prevent blockage. In addition, the mechanism can quickly and easily disassemble and install the filter screen, and it is also convenient to clean and replace it. Furthermore, the use of special materials can extend the service life of the filter structure, ensure stable filtration function in low-temperature environments, and improve the overall performance of the valve. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a side view of the structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the rotating mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the external structure of the filtration mechanism of this utility model;

[0021] Figure 5 This is a schematic diagram of the disassembled structure of the filter mechanism of this utility model.

[0022] In the diagram: 1. Valve housing; 2. Drain pipe; 3. Valve core;

[0023] 4. Rotating mechanism; 41. Fixed seat; 42. Side seat; 43. Waterproof motor; 44. Bevel gear one; 45. Rotating rod; 46. Bevel gear two; 47. Moving seat; 48. Rack; 49. Rotating gear; 410. Cylinder; 411. Locking device;

[0024] 5. Filter mechanism; 51. Retaining ring; 52. Insert sleeve; 53. Mounting ring; 54. Fixing bolt; 55. Turn handle; 56. Filter screen. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] Existing butterfly valves suffer from reduced sealing performance due to difficulties in accurately controlling valve core opening and closing at low temperatures. This embodiment provides a sealing butterfly valve suitable for low-temperature environments. Please refer to [link / reference]. Figure 1 - Figure 5 This system enables automatic and precise rotation of the valve core, thereby improving the reliability and safety of valve operation in low-temperature environments. The low-temperature environment suitable sealing butterfly valve includes a drain pipe 2 installed on one side of the valve body 1 and a valve core 3 rotatably connected to the inside of the valve body 1. A thermal compensation gasket is installed at the connection between the valve body 1 and the drain pipe 2. This gasket compensates for thermal expansion and contraction at low temperatures, preventing leakage due to stress at the connection and improving valve reliability. Reinforcing steel bars are installed on both sides of the valve core 3 to enhance structural strength and prevent deformation of the valve core 3 in low-temperature environments. A rotating mechanism 4 is installed on the valve body 1 to automatically rotate and lock the valve core 3. A filter mechanism 5 is installed inside the drain pipe 2 to filter impurities. The rotating mechanism 4 automatically rotates the valve core 3 and locks its position, achieving precise control and improving the stability and reliability of the valve. The filter mechanism 5 uses a detachable filter screen to intercept impurities, prevent clogging, and is corrosion-resistant, ensuring stable valve performance at low temperatures.

[0028] Under low-temperature conditions, the existing butterfly valve core 3 rotation control has a low level of automation, relies on manual operation, has a cumbersome process, insufficient accuracy, and lacks a reliable locking structure. At low temperatures, the valve core 3 is prone to displacement, compromising sealing and posing media leakage and safety hazards. To address these issues, a rotating mechanism 4 is constructed, including a fixed seat 41 mounted on the top of the valve body 1, a side seat 42 mounted on the top of the fixed seat 41, a waterproof motor 43 mounted on the side of the side seat 42, a bevel gear 44 mounted at the output end of the waterproof motor 43, a rotating rod 45 rotatably connected inside the side seat 42, a bevel gear 46 meshing with the bevel gear 44 at one end of the rotating rod 45, a movable seat 47 threaded onto the outer wall of the rotating rod 45, and a rack 48 penetrating the side seat 42 mounted on the movable seat 47. The rack 48 and the locking element 411 are on the same horizontal plane, allowing the locking force to be evenly distributed axially. The valve core 3 is positioned accurately and locked securely to ensure even power transmission and avoid skewed torque. This improves the valve's sealing performance and reliability in low-temperature environments. A rotating gear 49 is installed at the top of the valve core 3, which passes through the fixed seat 41 and meshes with the rack 48. A cylinder 410 is installed on the other side of the fixed seat 41. The cylinder 410 applies axial pressure to the rack 48 through the locking member 411, which locks the position of the rack 48 and thus fixes the valve core 3. This ensures that the valve is reliably sealed and operates stably in low-temperature environments. The cylinder 410 is equipped with a locking member 411 that meshes with the rack 48. The operation of the waterproof motor 43 drives the first bevel gear 44 to rotate. The meshing of the first bevel gear 44 and the second bevel gear 46 drives the rotating rod 45 to rotate. Since the moving seat 47 is threadedly connected to the outer wall of the rotating rod 45, it can move on the outer wall of the rotating rod 45, thereby driving the rack 48 to move laterally. Through the meshing of the rack 48 and the rotating gear 49, the upper and lower connecting ends of the valve core 3 rotate inside the valve housing 1, thereby realizing the automatic opening and closing of the valve core 3, improving the control accuracy, and avoiding the decrease in sealing performance and unstable operation caused by the displacement of the valve core 3 in low temperature environments.

[0029] Example 2

[0030] Based on Example 1, such as Figure 1 - Figure 5 As shown, based on the existing technology, butterfly valves are not easy to accurately control the opening and closing of valve core 3 in low-temperature environments, thus reducing the valve's sealing performance. However, most existing filter devices are fixed structures, which are difficult to clean and maintain, and their corrosion resistance is insufficient in low-temperature environments, making the filter components easy to be damaged, resulting in a decline in the overall performance of the valve. Therefore, this device is also equipped with a structure for quick disassembly and assembly of the filter components.

[0031] Existing filtration devices are mostly fixed, making cleaning and maintenance difficult. They also lack corrosion resistance at low temperatures, causing filter components to be easily damaged, which leads to a decline in the overall performance of the valve. In order to solve the above problems... The filter mechanism 5 includes a fixing ring 51 installed on the inner wall of the drain pipe 2. The inner and outer surfaces of the fixing ring 51 and the mounting ring 53 are coated with an anti-rust coating to prevent rust from affecting the structural stability. Multiple sets of inserts 52 are installed on the fixing ring 51. The inserts 52 are triangularly distributed on the outside of the fixing ring 51, which can make the mounting ring 53 evenly stressed and ensure that the filter screen 56 is installed firmly. The mounting ring 53 connected to the inserts 52 is movably installed on the fixing ring 51. The mounting ring 53 is fixed to the inserts 52 by a fixing bolt 54, which facilitates rotation, disassembly and cleaning, and improves the reliability and maintenance convenience of the filter mechanism 5 in low temperature environments. The inserts 52 are connected to the fixing bolt 54. A handle 55 is installed on the outside of the mounting ring 53. The filter screen 56 is installed inside the mounting ring 53. The filter screen 56 is a stainless steel perforated mesh. The stainless steel perforated mesh filter screen 56 is corrosion resistant and has high strength. It can effectively filter impurities and extend the service life of the filter mechanism 5, ensuring the long-term stable operation of the valve. Rotating the mounting ring 53 with the throttle 55 allows the connecting end of the mounting ring 53 to be inserted into the insert 52, and the insert 52 and the mounting ring 53 are fixed with the fixing bolt 54. This not only filters impurities in the liquid in the drain pipe 2, but also allows for quick assembly and disassembly of the filter screen 56, thus providing practical functionality.

[0032] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] 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 sealing butterfly valve suitable for low-temperature environments, comprising a drain pipe (2) installed on one side of a valve housing (1) and a valve core (3) rotatably connected to the inside of the valve housing (1), characterized in that: The valve housing (1) is provided with a rotating mechanism (4) for automatic rotation and locking of the valve core (3), and the drain pipe (2) is provided with a filtering mechanism (5) for filtering impurities. The rotating mechanism (4) includes a fixed seat (41) installed on the top of the valve body (1), a side seat (42) installed on the top of the fixed seat (41), a waterproof motor (43) installed on the side of the side seat (42), a bevel gear (44) installed at the output end of the waterproof motor (43), a rotating rod (45) rotatably connected inside the side seat (42), a bevel gear (46) meshing with the bevel gear (44) installed at one end of the rotating rod (45), a movable seat (47) threadedly connected to the outer wall of the rotating rod (45), a rack (48) penetrating the side seat (42) installed on the movable seat (47), a rotating gear (49) penetrating the fixed seat (41) and meshing with the rack (48) installed on the top of the valve core (3), a cylinder (410) installed on the other side of the fixed seat (41), and a locking piece (411) meshing with the rack (48) installed on the cylinder (410).

2. The sealing butterfly valve suitable for low-temperature environments according to claim 1, characterized in that: The filtration mechanism (5) includes a fixing ring (51) installed on the inner wall of the drain pipe (2), a plurality of inserts (52) are installed on the fixing ring (51), an installation ring (53) connected to the inserts (52) is movably installed on the fixing ring (51), a fixing bolt (54) is connected to the inserts (52), a throttle (55) is installed on the outside of the installation ring (53), and a filter screen (56) is installed inside the installation ring (53).

3. A sealing butterfly valve suitable for low-temperature environments according to claim 1, characterized in that: The valve core (3) is reinforced with steel bars on both sides, and a heat compensation gasket is provided at the connection between the valve shell (1) and the drain pipe (2).

4. A sealing butterfly valve suitable for low-temperature environments according to claim 1, characterized in that: The cylinder (410) applies axial pressure to the rack (48) through the locking member (411), and the rack (48) and the locking member (411) are on the same horizontal plane.

5. A sealing butterfly valve suitable for low-temperature environments according to claim 2, characterized in that: The insert (52) is triangularly distributed on the outside of the fixing ring (51), and the mounting ring (53) is fixed to the insert (52) by the fixing bolt (54).

6. A sealing butterfly valve suitable for low-temperature environments according to claim 2, characterized in that: The inner and outer surfaces of the fixing ring (51) and the mounting ring (53) are provided with anti-rust coatings, and the filter screen (56) is a stainless steel perforated screen.

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