Throttling ball convenient for removing impurities

Abstract

According to the technical scheme, the throttling ball body is characterized in that a flow channel is formed in the ball body, a plurality of upper blocking edges and a plurality of lower blocking edges are arranged in the flow channel, impurity discharging holes are formed in the edges, connected with the inner wall of the flow channel, of the lower blocking edges, and the impurity discharging holes are all located at the lowest point of the flow channel. The problem that in the prior art, medium or impurity accumulation affects the flow area is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ball valves, and more specifically, to a throttling sphere facilitating impurity removal. Background Art

[0002] The sphere is one of the main parts in a ball valve. As the opening and closing part of the ball valve, it is in spherical fit with the valve seat. The sphere can rotate 90 degrees in the valve body with the valve stem as the rotation axis to open and close the flow channel and prevent the flow of the medium in the flow channel. In addition to opening and closing the ball valve, the existing flow regulating ball valve can also control the opening degree of the ball valve to achieve the regulation and control of the pipeline flow. The Chinese patent with the publication number of "CN220816626U" discloses a throttling sphere. By adding upper blocking edges and lower blocking edges in the flow channel, during the process of the medium flowing through the flow channel, the flow direction and speed of the medium are both changed, thereby gradually reducing the internal pressure of the medium and slowing down the scouring force of the medium on the flow channel. At the same time, for the entire flow channel, the flow area is reduced, thereby achieving the throttling effect. However, there are still defects. A groove is formed between the adjacent lower blocking edges and the inner wall of the flow channel. Due to the variety of media, such as pulp, sediment, etc., such media will stagnate at the bottom of the groove. Part of the pulp or sediment accumulates at the bottom of the groove and cannot flow into the subsequent pipeline along with the flow direction of the medium. This will greatly reduce the area available for the medium to flow through the sphere and cannot reach the expected flow rate of the user. It is not limited to media such as pulp or sediment. For example, when the medium is water, impurities in the water will also accumulate in the groove. Over time, it will also affect the area available for the medium to flow through the flow channel. Moreover, due to the accumulation of the medium or impurities in the groove, it will undoubtedly increase the overall mass of the sphere, thereby increasing the torque required for the sphere, resulting in the phenomenon that it is difficult to open the sphere. Summary of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a throttling sphere capable of preventing the accumulation of impurities or media.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A throttling sphere facilitating impurity removal, which is provided with a flow channel. A number of upper blocking edges and a number of lower blocking edges are arranged in the flow channel. Drainage holes are formed at the edges where the lower blocking edges are connected to the inner wall of the flow channel, and all the drainage holes are located at the lowest point of the flow channel.

[0005] As a further improvement of the utility model, the space enclosed by the flow channel is frustum-shaped, and the contour size of the inner cavity of the flow channel gradually increases along the flow direction of the medium.

[0006] As a further improvement of the utility model, the upper blocking edges and the lower blocking edges are both provided with pressure-receiving inclined surfaces, and the pressure-receiving inclined surfaces are located on the side where the flow channel supplies the medium to flow in and are inclined to the central axis of the flow channel.

[0007] As a further improvement of the utility model, the longitudinal sections of the upper retaining edge and the lower retaining edge are triangular in shape.

[0008] The beneficial effects of the utility model are as follows: Drainage holes are provided on several lower retaining edges. The medium is divided into two parts and flows through the wavy channels formed by the upper retaining edge and the lower retaining edge and several drainage holes respectively. Such a design can ensure that part of the medium flows through several drainage holes successively without affecting the overall throttling effect, so that the medium or impurities flow into the subsequent pipeline together with the medium, effectively preventing the medium or impurities from accumulating between two adjacent lower retaining edges. The medium flow rate tends to be stable and meets the expectations. At the same time, it indirectly ensures the stable overall quality of the sphere and facilitates the smooth rotation of the sphere in the valve body. Description of the Drawings

[0009] Figure 1 is the main sectional view of the utility model;

[0010] Figure 2 is the left view of the utility model.

[0011] Reference numerals: 1, flow channel; 2, upper retaining edge; 3, lower retaining edge; 4, drainage hole; 5, compression inclined plane. Detailed Description of the Invention

[0012] The following further describes the utility model in detail with reference to the drawings and embodiments. The same components are denoted by the same reference numerals.

[0013] Referring to Figure 1 and Figure 2 shown, a throttling sphere facilitating impurity drainage in this embodiment is provided with a flow channel 1, and several upper retaining edges 2 and several lower retaining edges 3 are arranged in the flow channel 1;

[0014] Based on the foregoing prior art, drainage holes 4 are provided at the edges where several lower retaining edges 3 are connected to the inner wall of the flow channel 1. Several drainage holes 4 are all located at the lowest point of the flow channel 1. During the process of the medium flowing through the flow channel 1, the medium is divided into a main flow and a secondary flow. The main flow flows through the wavy channels formed by the upper retaining edge 2 and the lower retaining edge 3, and the secondary flow successively flows through several drainage holes 4 along the length direction of the flow channel 1 and close to the inner wall at the lowest point of the flow channel 1. The main flow and the secondary flow finally converge at the outlet end of the flow channel 1 and jointly flow into the subsequent pipeline;

[0015] Such a design can ensure that part of the medium flows through several drainage holes 4 successively without affecting the overall throttling effect, so that the medium or impurities flow into the subsequent pipeline together with the medium, effectively preventing the medium or impurities from accumulating between two adjacent lower retaining edges 3. The medium flow rate tends to be stable and meets the expectations. At the same time, it indirectly ensures the stable overall quality of the sphere and facilitates the smooth rotation of the sphere in the valve body.

[0016] As a specific embodiment of the improvement, referring to Figure 1 shown in the figure, the space enclosed by the flow channel 1 is frustum-shaped, and the inner cavity contour dimensions of the flow channel 1 gradually increase along the medium flow direction. During the process of the medium flowing from the small cross-section to the large cross-section, the medium pressure decreases and the flow velocity slows down, which can effectively reduce the scouring force of the medium on the flow channel 1, the upper baffle edge 2 and the lower baffle edge 3, and at the same time play a role in noise reduction; furthermore, the inner cavity dimensions of several impurity discharge holes 4 also gradually increase along the medium flow direction. Such a design can slow down the scouring of the medium on the inner wall of the impurity discharge holes 4 and also play an anti-blocking effect. The inner wall of the flow channel 1 at the lowest position is inclined downward relative to the horizontal plane, which can guide and accelerate the removal of impurities.

[0017] As a specific embodiment of the improvement, referring to Figure 1 shown in the figure, both the upper baffle edge 2 and the lower baffle edge 3 are provided with a pressure-receiving inclined surface 5. The pressure-receiving inclined surface 5 is located on the side of the flow channel 1 where the medium flows in and is inclined to the central axis of the flow channel 1. Through the pressure-receiving inclined surface 5, the medium can be guided to bend and flow in the flow channel 1 to achieve the purpose of gradually reducing the pressure.

[0018] As a specific embodiment of the improvement, referring to Figure 1 shown in the figure, the longitudinal cross-sections of the upper baffle edge 2 and the lower baffle edge 3 are triangular in shape, which can be an equilateral triangle, a right triangle or an isosceles triangle. Such a design can further improve the structural strength of the upper baffle edge 2 and the lower baffle edge 3, and the medium guiding effect is better, and it is not easy to generate turbulent flow.

[0019] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A throttling ball for easy impurity removal, which has a flow channel (1), wherein a plurality of upper edge ridges (2) and a plurality of lower edge ridges (3) are arranged in the flow channel (1), characterized in that: Several of the lower edge ridges (3) are provided with debris removal holes (4) at the edges where they connect with the inner wall of the flow channel (1), and the several of the debris removal holes (4) are located at the lowest point of the flow channel (1).

2. A throttling ball for easy removal of impurities according to claim 1, characterized in that: The space enclosed by the flow channel (1) is in the shape of a truncated cone, and the outline size of the inner cavity of the flow channel (1) gradually increases along the flow direction of the medium.

3. A throttling ball for easy removal of impurities according to claim 1 or 2, characterized in that: The upper edge (2) and the lower edge (3) are both provided with a pressure-bearing inclined surface (5), and the pressure-bearing inclined surface (5) is located on the side of the flow channel (1) for the medium to flow in and is inclined to the central axis of the flow channel (1).

4. A throttling ball for easy removal of impurities according to claim 3, characterized in that: The longitudinal cross-sections of the upper edge (2) and the lower edge (3) are in a triangular shape.

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