Internal cleaning structure of large-diameter ball valve

Abstract

The utility model belongs to the field of large-diameter ball valves, and particularly relates to an inner cleaning structure of a large-diameter ball valve, which comprises a ball valve, a rotating structure is fixedly arranged on the upper surface of the ball valve, a plurality of threaded holes are formed in the top surface of the ball valve along the circumferential direction in an annular array, and a cleaning component is in threaded connection in each threaded hole. A clamping groove is formed in the inner wall of the water inlet end of the ball valve, and a filtering assembly is clamped in the clamping groove; through the cleaning assemblies distributed in the circumferential direction of the top face of the ball valve, the transducer installed in the threaded hole is electrically connected with the ultrasonic generator fixed to the surface of the rotating structure, and when the ultrasonic generator is started, the transducer transmits high-frequency vibration to the surface of an inner cavity of the ball valve, so that dirt attached to the inner wall of the ball valve, a valve seat and a ball body is vibrated off; the problem that in the prior art, only a fluid channel can be cleaned, but the internal structure of the ball valve cannot be comprehensively cleaned is solved, and meanwhile, the circumferential uniform distribution design of the transducers ensures that vibration coverage is free of dead corners.

Description

Technical Field

[0001] This utility model relates to the field of large-diameter ball valves, specifically an internal cleaning structure for a large-diameter ball valve. Background Technology

[0002] Large-diameter ball valves are ball valves with a diameter of 500 mm to 3000 mm. The sealing pair and the opening and closing parts are driven by the valve stem and rotate around the axis of the ball valve. They can be used for fluid regulation and control and are widely used in industries such as chemical, papermaking, pharmaceutical, water conservancy, power, municipal, and steel.

[0003] In the prior art, such as in CN219673364U, a large-diameter ball valve is disclosed. It includes two valve bodies, a valve seat, and a ball valve. The two valve bodies are connected by bolts to the valve seat, and the ball valve is installed in the inner cavity of the valve seat. Both valve bodies have flow channels. The bottom of the ball valve is rotatably connected to the valve seat. A valve stem is fixedly installed at the top of the ball valve, passing through the valve seat. The valve stem is hollow inside. A rotating ring is rotatably installed in the inner cavity of the ball valve. A rotating rod is fixedly installed at the top of the rotating ring. The rotating rod passes through the valve seat and through the hollow cavity of the valve stem. A cleaning ring is connected to the outer circumference of the rotating ring through a telescopic device. The outer circumference of the cleaning ring is evenly covered with bristles. In this large-diameter ball valve, by setting the cleaning ring, rotating the second handle can drive the rotating rod to rotate, causing the rotating ring to rotate. The rotating ring can drive the cleaning ring to rotate, so that the bristles clean the residue attached to the inner cavity of the ball valve, thereby delaying the blockage of the ball valve and keeping the ball valve unobstructed.

[0004] While the aforementioned patent can clean the internal fluid channels of the ball valve through the rotation of the cleaning ring, it can only clean the fluid channels of the ball valve and cannot perform a comprehensive cleaning operation on the internal structure of the ball valve. Furthermore, it requires manual cleaning. In addition, the lack of a structure to perform preliminary filtration of the fluid entering the ball valve greatly increases the frequency of cleaning and maintenance. Therefore, in order to address the above problems, an internal cleaning structure for large-diameter ball valves is proposed. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, which can only clean the fluid passage of the ball valve and cannot perform comprehensive cleaning of the internal structure, and require manual cleaning, this invention proposes an internal cleaning structure for large-diameter ball valves.

[0006] The technical solution adopted by this utility model to solve its technical problem is: the internal cleaning structure of a large-diameter ball valve of this utility model includes a ball valve, a rotating structure is fixedly provided on the upper surface of the ball valve, a plurality of threaded holes are opened in a circumferential array on the top surface of the ball valve, a cleaning component is threadedly connected in each threaded hole, and a groove is opened on the inner wall of the water inlet end of the ball valve and a filter component is engaged in the groove.

[0007] The cleaning assembly includes a transducer threaded into a threaded hole and an ultrasonic generator fixedly connected to the surface of the rotating structure. The transducer and the ultrasonic generator are electrically connected.

[0008] The filter assembly includes a filter cotton layer arranged sequentially from the inside out and slidably connected in the slot, a filter mesh layer covering the outside of the filter cotton layer, and a filter plate layer covering the outside of the filter mesh layer.

[0009] Preferably, the transducer of the cleaning assembly is embedded in the threaded hole on the top surface of the ball valve via a threaded connection, and the ultrasonic generator is fixedly mounted on the side surface of the rotating structure by fasteners and forms an electrical connection circuit with the transducer.

[0010] Preferably, the filter cotton layer of the filter assembly is a multi-layer composite fiber structure and its outer contour slides in fit with the inner wall of the slot, the filter mesh layer is a stainless steel woven mesh structure and completely covers the outer surface of the filter cotton layer, and the filter plate layer is a metal stamping plate with through holes and its edge forms a sliding limiting structure that matches the slot.

[0011] Preferably, the outer edge of the filter plate layer of the filter assembly is provided with a limiting groove that cooperates with the slot to form a water flow impact gap between the water inlet side end face of the filter plate layer and the inner wall of the slot.

[0012] Preferably, the multiple transducers of the cleaning assembly are evenly distributed circumferentially along the top surface of the ball valve, and the vibration end of each transducer extends to the inner surface of the ball valve and forms a vibration transmission contact.

[0013] Preferably, the rotating structure includes a drive gear connected to the ball valve stem and a mounting flange disposed at the bottom of the ultrasonic generator, and the control circuit of the ultrasonic generator is arranged along the outer shell of the rotating structure and connected to an external power source.

[0014] The advantages of this utility model are:

[0015] 1. This utility model uses a cleaning component arranged circumferentially on the top surface of a ball valve. The transducer installed in the threaded hole is electrically connected to an ultrasonic generator fixed on the surface of the rotating structure. When the ultrasonic generator is started, the transducer transmits high-frequency vibration to the inner surface of the ball valve cavity, causing dirt adhering to the inner wall of the ball valve, the valve seat and the ball connection to be shaken off. This solves the problem in the prior art that it can only clean the fluid passage but cannot thoroughly clean the internal structure of the ball valve. At the same time, the circumferentially uniform distribution design of the transducer ensures that the vibration coverage is without dead angles.

[0016] 2. This utility model uses a filter assembly consisting of a filter cotton layer, a filter screen layer, and a filter plate layer installed in the slot at the inlet end of the ball valve. The metal stamping plate of the filter plate layer intercepts large particles of impurities, the stainless steel woven mesh of the filter screen layer filters medium particles, and the multi-layer composite fibers of the filter cotton layer adsorb tiny suspended matter, forming a three-stage gradient filtration. This reduces the amount of dirt entering the ball valve from the source. Furthermore, the impact force of the water flow pushes the filter assembly to be tightly locked in the slot, which not only avoids the loosening of the filter structure but also reduces the risk of scaling inside the ball valve, significantly extending the maintenance cycle. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0019] Figure 2 This is a schematic diagram of the cleaning component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the filter assembly structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0022] In the diagram: 1. Ball valve; 2. Rotating structure; 3. Cleaning assembly; 31. Transducer; 32. Ultrasonic generator; 4. Filter assembly; 41. Filter cotton layer; 42. Filter screen layer; 43. Filter plate layer. 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 scope of protection of the present utility model.

[0024] Please see Figures 1-4 As shown, an internal cleaning structure for a large-diameter ball valve includes a ball valve 1. A rotating structure 2 is fixedly installed on the upper surface of the ball valve 1. Multiple threaded holes are arranged in a circumferential annular array on the top surface of the ball valve 1. A cleaning component 3 is threadedly connected to each threaded hole. A groove is provided on the inner wall of the water inlet end of the ball valve 1, and a filter component 4 is engaged in the groove. The cleaning component 3 includes a transducer 31 threadedly connected to the threaded hole and an ultrasonic generator 32 fixedly connected to the surface of the rotating structure 2. The transducer 31 and the ultrasonic generator 32 are electrically connected.

[0025] During operation, the transducer 31 of the cleaning assembly 3 is screwed into the six threaded holes of the annular array on the top surface of the ball valve 1. The vibrating end of the transducer 31 extends through the threaded holes into the inner cavity of the ball valve 1 and contacts the valve seat surface. The ultrasonic generator 32 is fixed to the mounting flange of the rotating structure 2 by bolts and connected to the transducer 31 by a shielded cable. When the ultrasonic generator 32 is started, the transducer 31 generates high-frequency vibration of 20kHz-40kHz. The vibration wave is transmitted to the ball and sealing surface through the valve seat, causing the scale adhering to the inner wall of the ball valve 1, the valve stem connection and the ball flow channel to peel off and fall off. At the same time, the transducer 31, which is evenly distributed in the circumference, ensures that the vibration energy covers the 360° area inside the ball valve 1, achieving cleaning without dead angles.

[0026] Furthermore, the filter assembly 4 includes a filter cotton layer 41 arranged sequentially from the inside out and slidably connected in the slot, a filter mesh layer 42 covering the outside of the filter cotton layer 41, and a filter plate layer 43 covering the outside of the filter mesh layer 42.

[0027] During operation, the filter assembly 4 is nested in the groove at the inlet end of the ball valve 1. The edge of the perforated metal stamped plate of the filter plate layer 43 is embedded in the limiting groove of the groove. The stainless steel woven mesh of the filter screen layer 42 is welded to the inside of the filter plate layer 43 and wraps the filter cotton layer 41. The multi-layer composite fibers of the filter cotton layer 41 are formed by hot pressing and bonded to the inner wall of the filter screen layer 42. When the water flow impacts the filter plate layer 43, the through holes intercept large particles of impurities, the filter screen layer 42 intercepts medium-sized sand and gravel, and the filter cotton layer 41 adsorbs colloids and suspended solids, forming a three-stage gradient filtration barrier.

[0028] Furthermore, the filter cotton layer 41 of the filter assembly 4 is a multi-layer composite fiber structure and its outer contour slides in fit with the inner wall of the slot; the filter mesh layer 42 is a stainless steel woven mesh structure and completely covers the outer surface of the filter cotton layer 41; the filter plate layer 43 is a metal stamping plate with through holes and its edge forms a sliding limiting structure that matches the slot.

[0029] During operation, the filter plate layer 43 intercepts debris with a diameter greater than 5mm, the filter screen layer 42 blocks particles of 0.5-5mm, and the filter cotton layer 41 adsorbs suspended matter smaller than 0.5mm, effectively reducing the dirt adhesion rate inside the ball valve 1. At the same time, the sliding limit structure of the filter plate layer 43, together with the water flow impact force, realizes the self-locking of the filter component 4, avoiding displacement of the component due to fluid pressure.

[0030] Furthermore, multiple transducers 31 of the cleaning component 3 are evenly distributed circumferentially along the top surface of the ball valve 1, and the vibration end of each transducer 31 extends to the inner cavity surface of the ball valve 1 and forms a vibration transmission contact.

[0031] During operation, the six transducers 31 of the cleaning component 3 are evenly distributed circumferentially along the top surface of the ball valve 1. The titanium alloy vibrating rod of each transducer 31 extends through the threaded hole to the inner surface of the ball valve 1 and maintains a 0.5mm gap with the valve seat sealing surface. The ultrasonic generator 32 outputs a 40kHz high-frequency electrical signal to drive the transducers 31 to generate longitudinal vibration. The vibration energy is transmitted through the valve seat to the ball surface and the inner wall of the flow channel. The circumferentially distributed transducers 31 form a superimposed vibration field inside the ball valve 1, covering the valve stem connection, the ball support ring and the dead corner area of ​​the sealing surface, so that stubborn scale is peeled off from the metal surface. This design achieves full-area coverage cleaning inside the ball valve 1 through multi-point vibration transmission, which improves efficiency by 60% compared with a single cleaning mechanism, and maintenance can be completed without disassembling the valve body, significantly reducing manual cleaning costs and downtime.

[0032] Working principle: When water flows in from the inlet of ball valve 1, the filter plate layer 43 of the filter assembly 4 intercepts large particles of debris through its perforated metal stamping plate, the stainless steel woven mesh of the filter screen layer 42 blocks medium-sized particles, and the multi-layer composite fibers of the filter cotton layer 41 adsorb tiny suspended solids, forming a three-stage gradient filtration to purify the water. At the same time, the impact force of the water flow pushes the filter plate layer 43, the filter screen layer 42, and the filter cotton layer 41 to be tightly locked in the groove. When dirt accumulates inside ball valve 1 after long-term operation, the ultrasonic generator 32 fixed on the rotating structure 2 is activated. The transducer 31, which is circumferentially distributed in the threaded holes on the top surface of the ball valve 1, outputs a high-frequency electrical signal. The transducer 31 converts electrical energy into mechanical vibration and transmits the vibration energy through the vibration end that extends into the inner cavity of the ball valve 1. This causes the dirt layer on the valve seat sealing surface, the ball surface, and the inner wall of the flow channel to be peeled off due to the high-frequency micro-amplitude vibration. The drive gear of the rotating structure 2 drives the control circuit of the ultrasonic generator 32 to follow the operation when the valve stem opens and closes the ball valve 1, ensuring that the vibration cleaning function and the valve opening and closing action do not interfere with each other, and finally achieves the dual cleaning effect of filtration and scale inhibition and vibration scale removal.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A large-bore ball valve internal cleaning structure, characterized by: Includes a ball valve (1), the upper surface of which is fixedly provided with a rotating structure (2), the top surface of the ball valve (1) is provided with multiple threaded holes in a circumferential array, each threaded hole is threaded with a cleaning component (3), and the inner wall of the water inlet end of the ball valve (1) is provided with a slot and a filter component (4) is engaged in the slot. The cleaning assembly (3) includes a transducer (31) threaded into a threaded hole and an ultrasonic generator (32) fixedly connected to the surface of the rotating structure (2). The transducer (31) and the ultrasonic generator (32) are electrically connected. The filter assembly (4) includes a filter cotton layer (41) arranged sequentially from the inside out and slidably connected in the slot, a filter mesh layer (42) covering the outside of the filter cotton layer (41), and a filter plate layer (43) covering the outside of the filter mesh layer (42).

2. The inner cleaning structure of a large-diameter ball valve according to claim 1, characterized in that: The transducer (31) of the cleaning assembly (3) is embedded in the threaded hole on the top surface of the ball valve (1) by means of a threaded connection, and the ultrasonic generator (32) is fixedly installed on the side surface of the rotating structure (2) by fasteners and forms an electrical connection circuit with the transducer (31).

3. The internal cleaning structure of a large-diameter ball valve according to claim 1, characterized in that: The filter cotton layer (41) of the filter assembly (4) is a multi-layer composite fiber structure and its outer contour slides with the inner wall of the slot. The filter mesh layer (42) is a stainless steel woven mesh structure and completely covers the outer surface of the filter cotton layer (41). The filter plate layer (43) is a metal stamping plate with through holes and its edge forms a sliding limiting structure that cooperates with the slot.

4. The inner cleaning structure of a large-diameter ball valve according to claim 1, characterized in that: The filter plate layer (43) of the filter assembly (4) has a limiting groove on its outer edge that cooperates with the slot to form a limiting groove, and a water flow impact gap is formed between the water inlet side end face of the filter plate layer (43) and the inner wall of the slot.

5. The inner cleaning structure of a large-diameter ball valve according to claim 1, characterized in that: The multiple transducers (31) of the cleaning assembly (3) are evenly distributed circumferentially along the top surface of the ball valve (1), and the vibration end of each transducer (31) extends to the inner surface of the ball valve (1) and forms a vibration transmission contact.

6. The inner cleaning structure of a large-diameter ball valve according to claim 1, characterized in that: The rotating structure (2) includes a drive gear connected to the stem of the ball valve (1) and a mounting flange located at the bottom of the ultrasonic generator (32). The control circuit of the ultrasonic generator (32) is arranged along the outer shell of the rotating structure (2) and connected to an external power source.

Images