Ore pulp level control valve

Abstract

The utility model discloses an ore pulp level control valve, and relates to the technical field of control valves, the lower part of a valve body is provided with a feed pipe, one end of the feed pipe penetrates into the valve body in a sealed manner, the other end of the feed pipe penetrates into the valve body in a sealed manner, and a mounting port for mounting a valve seat is formed at the end part of the feed pipe in the valve body; the inner diameter of the mounting opening is gradually reduced from top to bottom, an inner conical surface is formed on the inner wall of the mounting opening, the outer diameter of the valve seat is gradually reduced from top to bottom, an outer conical surface parallel to the inner conical surface is formed on the outer wall of the valve seat, and the outer conical surface of the outer wall of the valve seat is in interference abutting fit with the inner conical surface of the inner wall of the mounting opening; a discharge hole is formed in one side of the valve body; the valve seat is installed in the mode that the two conical surfaces are in interference abutting fit, installation of the valve seat is simple and firm, and independent disassembly and replacement of the valve seat are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, in particular to a slurry level control valve. Background Art

[0002] The material level control valve is also called "intelligent slurry valve" and "flotation column intelligent control valve" in the industry. Its principle is to receive signals and drive the material port between the valve core and the valve seat to open or close according to the slurry level requirements in the downstream equipment. However, during long-term use, the slurry will cause wear on the feed port of the control valve, so the staff needs to regularly inspect and maintain the control valve. If the wear is serious, the valve core and valve seat need to be replaced.

[0003] However, the valve seat in the existing control valve is usually fixed to the valve body feed port by bolts or threaded connections during installation. Although this installation method is firm and stable, its connection part is very susceptible to wear by the slurry, which not only affects the firmness and stability of the valve seat installation, but also makes it impossible to disassemble the valve seat normally afterwards. In severe cases, the entire valve body needs to be scrapped and replaced together with the valve seat, causing great waste and increasing the user's cost. Utility Model Content

[0004] In order to overcome the deficiencies in the background technology, the utility model discloses a slurry level control valve. The utility model realizes the installation of the valve seat by means of interference fit between two conical surfaces, which makes the installation of the valve seat simpler and more reliable, and provides convenience for subsequent disassembly.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A slurry level control valve comprises a valve body, a valve seat and a valve core, a feed pipe is arranged at the lower part of the valve body, one end of the feed pipe is sealed and penetrates into the interior of the valve body, an installation opening for installing the valve seat is formed at the end of the feed pipe located in the valve body, the inner diameter of the installation opening gradually decreases from top to bottom, and its inner wall forms an inner conical surface, the outer diameter of the valve seat gradually decreases from top to bottom, and its outer wall forms an outer conical surface parallel to the inner conical surface, the outer conical surface of the outer wall of the valve seat and the inner conical surface of the inner wall of the installation opening are interference fit, the valve core is installed on the upper part of the valve seat, and is used for opening and closing the feed pipe, and a discharge port is arranged on one side of the valve body.

[0007] Furthermore, the minimum outer diameter of the valve seat is not greater than the maximum inner diameter of the installation opening, and the maximum outer diameter of the valve seat is greater than the minimum inner diameter of the installation opening.

[0008] Furthermore, an annular outer folded edge is arranged around the valve seat on the upper edge of the outer wall of the valve seat, and the outer diameter of the annular outer folded edge is greater than the outer diameter of the feed pipe.

[0009] Furthermore, a mounting frame is provided on the upper part of the valve body, a cylinder is provided on the upper part of the mounting frame, a connecting rod penetrating the upper cover of the valve body and connected to the valve core is provided at the output end of the cylinder, and a sealing ring is provided between the connecting rod and the upper cover of the valve body.

[0010] Compared with the prior art, the utility model has the following beneficial effects: by utilizing the conical surface connection between the valve seat and the mounting port, not only can the valve seat be firmly connected and fixed, but also subsequent maintenance and replacement can be facilitated;

[0011] The annular outer folding edge is provided to facilitate the disassembly and installation of the valve seat and provide convenience for the staff to apply force;

[0012] The utility model realizes the installation of the valve seat by means of the interference fit of two conical surfaces, which not only makes the installation of the valve seat simple and firm, but also realizes the separate disassembly and replacement of the valve seat. The utility model has a simple and reliable structure, provides great convenience for the daily inspection and maintenance of the valve body, greatly saves costs and avoids waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the control valve structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the valve seat structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the feed pipe structure of the utility model.

[0016] In the figure: 1. Cylinder; 2. Mounting frame; 3. Connecting rod; 4. Valve body; 5. Valve core; 6. Valve seat; 7. Discharge port; 8. Feed pipe; 9. Annular outer folding edge; 10. Outer cone surface; 11. Mounting port; 12. Inner cone surface. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. In the description, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present invention and are for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction.

[0018] Please refer to the instruction manual Figure 1-3 , the utility model provides a technical solution:

[0019] Embodiment 1, a slurry level control valve, including a valve body 4, a valve seat 6 and a valve core 5, a feed pipe 8 is provided at the lower part of the valve body 4, one end of the feed pipe 8 is sealed and penetrates into the interior of the valve body 4, the feed pipe 8 and the valve body 4 are an integrated structure, the end of the feed pipe 8 located in the valve body 4 forms a mounting port 11 for mounting the valve seat 6, the inner diameter of the mounting port 11 gradually decreases from top to bottom, and its inner wall forms an inner conical surface 12, the outer diameter of the valve seat 6 gradually decreases from top to bottom, and its outer wall forms an outer conical surface 10 parallel to the inner conical surface 12, the outer conical surface 10 of the outer wall of the valve seat 6 and the inner conical surface of the inner wall of the mounting port 11 12 interference fit, in order to ensure that the valve seat 6 can be effectively and firmly installed with the installation port 11, the minimum outer diameter of the valve seat 6 is not greater than the maximum inner diameter of the installation port 11, and the maximum outer diameter of the valve seat 6 is greater than the minimum inner diameter of the installation port 11. When installing the valve seat 6, it is only necessary to insert the small diameter end of the outer wall of the valve seat 6 into the installation port 11, and then gently apply axial force to smash the valve seat 6. As the valve seat 6 descends, the outer conical surface 10 of the outer wall of the valve seat 6 interferes with the inner conical surface 12 of the installation port 11, and finally the valve seat 6 is firmly installed. The cooperation between the inner conical surface 12 and the outer conical surface 10 can also achieve a sealing effect;

[0020] The valve core 5 is installed on the upper part of the valve seat 6 and is used to adjust the opening and closing of the feed pipe 8. Specifically, a mounting frame 2 is provided on the upper part of the valve body 4, and a cylinder 1 is provided on the upper part of the mounting frame 2. The output end of the cylinder 1 is provided with a connecting rod 3 that penetrates the upper cover of the valve body 4 and is connected to the valve core 5. A sealing ring is provided between the connecting rod 3 and the upper cover of the valve body 4. The cylinder 1 is used to drive the connecting rod 3 to rise and fall, thereby realizing the opening and closing regulation of the valve core 5 and the valve seat 6. The lower bottom surface of the inner cavity of the valve body 4 is an inclined bottom surface, and one side of the valve body 4 is provided with a discharge port 7 adjacent to the lower end of the inclined bottom surface.

[0021] Embodiment 2, in order to facilitate the staff's force application and provide convenience for the disassembly and installation of the valve seat 6, an annular outer folded edge 9 is provided on the upper edge of the outer wall of the valve seat 6 around the valve seat 6, and the outer diameter of the annular outer folded edge 9 is larger than the outer diameter of the feed pipe 8. The annular outer folded edge 9 is used to enable the staff to apply force on a force-bearing step surface when repairing and disassembling the valve seat 6.

[0022] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present invention, and any figure marks in the claims should not be regarded as limiting the content of the claims involved.

Claims

1. A slurry level control valve, comprising a valve body (4), a valve seat (6) and a valve core (5), characterized in that: A feed pipe (8) is provided at the lower part of the valve body (4), one end of the feed pipe (8) is sealed and extends through the interior of the valve body (4), and a mounting opening (11) for mounting a valve seat (6) is formed at the end of the feed pipe (8) located in the valve body (4), the inner diameter of the mounting opening (11) gradually decreases from top to bottom, and its inner wall forms an inner conical surface (12), the outer diameter of the valve seat (6) gradually decreases from top to bottom, and its outer wall forms an outer conical surface (10) parallel to the inner conical surface (12), the outer conical surface (10) of the outer wall of the valve seat (6) and the inner conical surface (12) of the inner wall of the mounting opening (11) are interference fit, the valve core (5) is installed on the upper part of the valve seat (6) and is used to adjust the opening and closing of the feed pipe (8), and a discharge opening (7) is provided on one side of the valve body (4).

2. A slurry level control valve according to claim 1, characterized in that: The minimum outer diameter of the valve seat (6) is not greater than the maximum inner diameter of the installation opening (11), and the maximum outer diameter of the valve seat (6) is greater than the minimum inner diameter of the installation opening (11).

3. A slurry level control valve according to claim 2, characterized in that: An annular outer folded edge (9) is provided on the upper edge of the outer wall of the valve seat (6) and is arranged around the valve seat (6). The outer diameter of the annular outer folded edge (9) is greater than the outer diameter of the feed pipe (8).

4. A slurry level control valve according to claim 1, characterized in that: A mounting frame (2) is provided on the upper part of the valve body (4), a cylinder (1) is provided on the upper part of the mounting frame (2), a connecting rod (3) penetrating the upper cover of the valve body (4) and connected to the valve core (5) is provided at the output end of the cylinder (1), and a sealing ring is provided between the connecting rod (3) and the upper cover of the valve body (4).

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