Electric ball valve convenient to overhaul

Abstract

The utility model relates to the technical field of ball valves, in particular to an electric ball valve convenient to overhaul. Cut-off structures for actively cutting off water sources at the two ends when the interior of the ball valve top shell is overhauled are hermetically assembled at the two ends of the ball valve top shell; the cut-off structure comprises cut-off butt joint pipes fixed to the two ends of the ball valve top shell in a sealed mode, cut-off inner grooves are formed in the cut-off butt joint pipes, and cut-off plates are movably arranged in the cut-off inner grooves. The cut-off structures are arranged at the two ends of the ball valve top shell, the cut-off plates in the cut-off butt joint pipes can be controlled to ascend and descend through the vertical screw rods and the transmission wheels, when the interior of the ball valve top shell is overhauled, water sources at the two ends can be actively cut off, water flow is prevented from affecting work in the overhauling process, and the overhauling safety and convenience are improved; and the risk of faults or safety accidents caused by operation with water is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to ball valve technical field, concretely relates to a kind of electric ball valve of being convenient for overhauling. BACKGROUND

[0002] In modern industrial production and many scenes of daily life, fluid conveying and control link is very important, electric ball valve as key equipment, is widely used in various pipeline systems.From petroleum chemical industry, electric power energy field, to city water supply and drainage, heating and air conditioning system, electric ball valve cannot be separated from the accurate regulation and control of fluid flow, pressure and flow direction.With the progress of technology and the expansion of industrial scale, the performance, reliability and maintenance convenience of electric ball valve are more stringent requirements in related industries.However, traditional electric ball valve has many drawbacks in practical application.

[0003] In the aspect of overhaul, traditional electric ball valve lacks efficient online overhaul water source cut-off means.When the interior of ball valve needs to be overhauled and maintained, the entire fluid conveying system often needs to be stopped, which not only causes production interruption, causing huge economic losses, but also in some cases where pipeline fluid cannot be completely emptied, maintenance personnel have to carry out water operation with risks such as fluid leakage and high pressure impact, which has great safety hazards.

[0004] Therefore, the skilled person in the art provides an electric ball valve convenient for overhaul to solve the problems raised in the above background. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides:

[0006] An electric ball valve convenient for overhaul, comprising: a ball valve top shell; the ball valve top shell is sealed and assembled with cut-off structure for actively cutting off water source at both ends when the interior of ball valve top shell is overhauled;

[0007] The cut-off structure comprises a cut-off butt joint pipe sealed and fixed at both ends of the ball valve top shell, a cut-off inner groove is formed in the cut-off butt joint pipe, and a cut-off plate is movably arranged in the cut-off inner groove;

[0008] Screw holes are formed in the inner side of the cut-off plate, vertical screw rods are spirally drivenly arranged in the screw holes, the top parts of the vertical screw rods are sealingly and rotatably installed outside the cut-off inner groove, and transmission wheels are fixedly arranged.

[0009] Preferably, the end of the cut-off butt joint pipe away from the ball valve top shell is integrally fixed with an assembly flange.

[0010] Preferably, a sealing inner groove is formed in the bottom wall of the ball valve top shell, and a ball valve bottom shell is detachably arranged at the lower end of the ball valve top shell.

[0011] Preferably, the bottom surface of the ball valve is fixed with a sealing rail plate that is movable and sealed inside the sealing groove.

[0012] Preferably, the outer edges of both the bottom shell and the top shell of the ball valve are integrally fixed with an assembly frame, and the inner wall of the assembly frame is vertically perforated with a number of assembly bolts.

[0013] Preferably, the ball valve bottom shell and the ball valve top shell are assembled with assembly bolts on the assembly frame for detachable sealing assembly.

[0014] Preferably, an inner ball valve is provided inside the ball valve bottom shell and the ball valve top shell, and an adjusting rod that is sealed and rotatably passes through the outside of the ball valve top shell is fixedly fixed at the top of the inner ball valve. A worm wheel is fixedly assembled on the outer wall of the top of the adjusting rod, the worm wheel meshes with a worm, and a handwheel is fixedly provided on the outer wall of the end of the worm away from the worm wheel.

[0015] The ball valve top shell surface is integrally fixed with a sealing top shell, and the adjusting rod is located inside the sealing top shell;

[0016] Furthermore, a servo motor is connected to the other end of the worm gear, and the servo motor can be used to actively drive the worm gear to rotate, while the handwheel is used to manually drive the worm gear to rotate.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] This utility model features a cutting-off structure at both ends of the ball valve top shell. The cutting plate inside the cutting-off connector can be raised and lowered by a vertical screw and a transmission wheel. During maintenance of the ball valve top shell, the water source at both ends can be actively cut off, preventing water flow from affecting the work during maintenance, improving the safety and convenience of maintenance, and reducing the risk of malfunctions or safety accidents caused by working with water.

[0019] This utility model features an assembly flange at the end of the cut-off pipe furthest from the top shell of the ball valve, facilitating connection to external pipelines and improving overall assembly efficiency. The ball valve bottom shell and top shell are detachably sealed and assembled through the cooperation of the sealing inner groove and sealing rail plate, as well as the assembly bolts on the assembly frame, ensuring the overall sealing performance of the valve, preventing media leakage, and guaranteeing the efficiency of valve disassembly, assembly, and maintenance. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of an electric ball valve that is easy to maintain, as provided in this application;

[0021] Figure 2 This is a front structural diagram of an electric ball valve that is easy to maintain, as provided in this application.

[0022] Figure 3 This is a schematic diagram of the disassembled structure of an electric ball valve that is easy to maintain, as provided in this application;

[0023] Figure 4 is a structure diagram of the middle section of the electric ball valve convenient for maintenance provided by the application;

[0024] Figure 5 is a structure diagram of position A of the electric ball valve convenient for maintenance provided by the application.

[0025] In the figure:

[0026] 1, ball valve top shell;

[0027] 2, cut-off structure; 201, cut-off butt joint pipe; 202, cut-off inner groove; 203, assembly flange; 204, vertical screw rod; 205, transmission wheel; 206, cut-off plate;

[0028] 3, sealing inner groove; 4, ball valve bottom shell; 5, sealing rail plate; 6, assembly frame; 7, assembly bolt; 8, inner ball valve; 9, adjusting rod; 10, worm gear; 11, worm; 12, hand wheel; 13, sealing top shell. DETAILED DESCRIPTION

[0029] The utility model will be further explained in detail in combination with the drawings and specific embodiments. The examples of the utility model are given for the purpose of illustration and description, and are not exhaustive or limit the utility model to the disclosed form. Many modifications and changes are obvious to those skilled in the art. The selection and description of embodiments are to better illustrate the principles and practical application of the utility model, and to enable those skilled in the art to understand the utility model so as to design various embodiments with various modifications suitable for specific purposes.

[0030] Embodiment, please refer to Figures 1-5 In this embodiment, an electric ball valve convenient for maintenance is provided, which comprises a ball valve top shell 1; the ball valve top shell 1 is sealed and assembled with a cut-off structure 2 for actively cutting off water sources at both ends when the inside of the ball valve top shell 1 is overhauled at both ends.

[0031] The cut-off structure 2 comprises a cut-off butt joint pipe 201 fixedly connected with the ball valve top shell 1 at both ends, an inner groove 202 is formed in the cut-off butt joint pipe 201, and a cut-off plate 206 is movably arranged in the inner groove 202; a screw hole is formed in the inner side of the cut-off plate 206, a vertical screw rod 204 is spirally and transmissionally arranged in the screw hole, the top of the vertical screw rod 204 is sealingly and rotationally installed outside the inner groove 202, and a transmission wheel 205 is fixedly arranged; an assembly flange 203 is fixedly arranged at the end of the cut-off butt joint pipe 201 away from the ball valve top shell 1.

[0032] The bottom wall of the ball valve top shell 1 is provided with a sealing inner groove 3, and the lower end of the ball valve top shell 1 is detachably provided with a ball valve bottom shell 4; the surface of the ball valve bottom shell 4 is integrally fixed with a sealing rail plate 5 which is movably sealed inside the sealing inner groove 3; the outer edges of the ball valve bottom shell 4 and the ball valve top shell 1 are integrally fixed with an assembly frame 6, and the inner wall of the assembly frame 6 is vertically and throughly provided with a plurality of assembly bolts 7; the ball valve bottom shell 4 and the ball valve top shell 1 are detachably and sealingly assembled through the assembly bolts 7 on the assembly frame 6.

[0033] The inner side of the ball valve bottom shell 4 and the ball valve top shell 1 is provided with an inner ball valve 8, and the top end of the inner ball valve 8 is integrally fixed with an adjusting rod 9 which is sealingly and rotatably penetrated outside the ball valve top shell 1; the top end outer wall of the adjusting rod 9 is fixedly assembled with a worm gear 10, the worm gear 10 is engaged with a worm 11, and the outer wall of the end of the worm 11 away from the worm gear 10 is fixedly provided with a hand wheel 12; the surface of the ball valve top shell 1 is integrally fixed with a sealing top shell 13, and the adjusting rod 9 is arranged inside the sealing top shell 13,

[0034] The working principle of the present application according to the above embodiment is as follows:

[0035] Cut off water source: when the inside of the ball valve top shell 1 is being overhauled, the transmission wheel 205 is rotated, the transmission wheel 205 drives the vertical screw rod 204 fixed thereto to rotate, since the screw holes in the cut-off plate 206 are in screw transmission cooperation with the vertical screw rod 204, the rotation of the vertical screw rod 204 will make the cut-off plate 206 move up and down in the cut-off inner groove 202, when the cut-off plate 206 moves downward to the bottom of the cut-off inner groove 202, it can block the water flow in the cut-off butt joint pipe 201, thereby actively cutting off the water source at both ends, providing a safe water-free environment for overhaul;

[0036] Open and close the ball valve: when manually operated, the hand wheel 12 is rotated, the hand wheel 12 drives the worm 11 to rotate, the worm 11 is engaged with the worm gear 10, thereby driving the worm gear 10 to rotate, the worm gear 10 is fixed at the top end of the adjusting rod 9, so the adjusting rod 9 will rotate with it, the adjusting rod 9 is fixedly connected with the inner ball valve 8, the rotation of the adjusting rod 9 makes the inner ball valve 8 rotate, realizing the opening and closing of the ball valve, when electrically operated, the servo motor drives the worm 11 to rotate, the subsequent transmission process is the same as manual operation, which can also control the rotation of the inner ball valve 8;

[0037] Protection mechanism: the sealing top shell 13 fixed on the surface of the ball valve top shell 1 seals the adjusting rod 9, the worm gear 10, the worm 11 and other components inside, it is difficult for dust, water vapor and other impurities in the external environment to enter, which can effectively protect these components, reduce wear and failure caused by external environmental factors, prolong the service life of the valve and ensure stable operation of the valve.

[0038] In the utility model, unless another definite provision and limitation, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation, for ordinary skill in the art to the person, can according to specific circumstances understanding the specific meaning of the above-mentioned terms in the utility model.

[0039] Obviously, the described embodiments are only part of the embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art and related fields without creative work shall belong to the scope of protection of the utility model. The structure, device and operation method not specifically described and explained in the utility model, if no special description and limitation, are implemented according to conventional means in the art.

Claims

1. An electrically powered ball valve which is convenient for inspection, characterized in that, Include: Ball valve top shell (1); Both ends of the ball valve top shell (1) are sealingly assembled with a cut-off structure (2) for actively cutting off the water source at both ends when the ball valve top shell (1) is internally inspected; The cut-off structure (2) includes a cut-off butt joint pipe (201) sealingly fixed to both ends of the ball valve top shell (1), the cut-off butt joint pipe (201) is internally provided with a cut-off inner groove (202), and the cut-off inner groove (202) is movably provided with a cut-off plate (206); The cut-off plate (206) is internally provided with a screw hole, and the screw hole is spirally driven by a vertical screw rod (204), the vertical screw rod (204) is sealingly and rotatably installed at the outer side of the cut-off inner groove (202), and a transmission wheel (205) is fixedly arranged.

2. The electrically powered ball valve according to claim 1, wherein The cut-off butt joint pipe (201) is integrally fixed with an assembly flange (203) away from the ball valve top shell (1).

3. The electrically powered ball valve of claim 1, wherein, The bottom wall of the ball valve top shell (1) is provided with a sealing inner groove (3), and the lower end of the ball valve top shell (1) is detachably provided with a ball valve bottom shell (4).

4. The electrically powered ball valve of claim 3, wherein, The surface of the ball valve bottom shell (4) is integrally fixed with a sealing rail plate (5) movably sealingly arranged inside the sealing inner groove (3).

5. An electrically powered ball valve for ease of maintenance according to claim 4, wherein, The outer edges of the ball valve bottom shell (4) and the ball valve top shell (1) are integrally fixed with an assembly frame (6), and a plurality of assembly bolts (7) are vertically and throughly arranged in the inner wall of the assembly frame (6).

6. An electrically powered ball valve for ease of maintenance according to claim 5, wherein, The ball valve bottom shell (4) and the ball valve top shell (1) are detachably sealingly assembled by the assembly bolts (7) on the assembly frame (6).

7. An electrically powered ball valve for ease of maintenance according to claim 6, wherein The inner sides of the ball valve bottom shell (4) and the ball valve top shell (1) are provided with an inner ball valve (8), and the top end of the inner ball valve (8) is integrally fixed with a regulating rod (9) sealingly and rotatably penetrating the outer part of the ball valve top shell (1), the top end of the regulating rod (9) is fixedly assembled with a worm wheel (10), the worm wheel (10) is engaged with a worm (11), and the outer wall of one end of the worm (11) away from the worm wheel (10) is fixedly provided with a hand wheel (12).

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