Valve core of regulating valve

Abstract

The utility model discloses a valve core of a regulating valve, which relates to the technical field of valve cores of regulating valves and comprises a main body, a first sealing column is fixed inside the main body, a second sealing column is movably connected inside the first sealing column, a sealing ring is movably connected inside the second sealing column, and a rotating rod penetrating through the sealing ring is arranged inside the sealing ring. The top end of the sealing ring is movably connected with a valve rotating rod. By means of the sealing ring installed inside and the fixing rod with the second sealing column capable of being manually rotated inside, it can be guaranteed that when the valve is replaced, water inside the main body cannot flow out, sealing can be conducted under the condition that no valve element exists, after rotation, the two sets of fixing blocks inside can passively slide along the sliding cavity inside, and the sealing effect is good. When the valve core is replaced, the sealing ring is loosened and self-locked and is taken out from the outside for replacement, so that the valve core is simple, convenient and rapid to replace and high in maintenance efficiency, and the water pipe can be sealed during replacement.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valve cores, in particular to a regulating valve core. Background Art

[0002] A regulating valve, also known as a control valve, is a final control element in the field of industrial automation process control that receives control signals output by a regulating control unit and uses power operation to change process parameters such as medium flow, pressure, temperature, and liquid level. It is generally composed of an actuator and a valve.

[0003] A regulating valve is a commonly used control device. Its main function is to adjust the flow, pressure and temperature of a fluid by changing the valve opening. Regulating valves are widely used in the field of industrial automation control. By accurately adjusting the flow, pressure and temperature of the fluid medium, they ensure the stability and safety of the process and improve production efficiency.

[0004] In the prior art, the sealing surfaces of the valve core and the valve seat of the regulating valve are both made of metal hard sealing surfaces, which are difficult to process. In addition, since the valve core is often in contact with the valve seat, long-term working collision will cause the contact sealing surfaces of the two to be worn, resulting in a deterioration of the sealing effect. At this time, the entire valve core needs to be repaired or replaced, which has high repair costs and a long time. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a regulating valve core to solve the technical problems of difficulty in replacing the valve core and high maintenance costs.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a regulating valve core, comprising a main body, a first sealing column fixed inside the main body, a second sealing column movably connected inside the first sealing column, a sealing ring movably connected inside the second sealing column, a rotating rod passing through the sealing ring is provided inside the sealing ring, a valve rotating rod is movably connected to the top of the sealing ring, two groups of fixed blocks are provided inside the second sealing column, and two groups of sliding cavities cooperating with the fixed blocks are provided on the outside of the sealing ring.

[0007] By adopting the above technical solution, when in use, the valve is manually twisted through the valve stem to make the valve seal the water flowing inside the main body;

[0008] Then, the staff members pull the fixed rod at the top of the second sealing column with both hands and rotate the fixed rod manually in the clockwise direction. While the second sealing column is rotating, the two groups of fixed blocks arranged inside the second sealing column will move in the two sliding cavities reserved inside the sealing ring. Also, because it is fixed and the sealing ring is relatively loose, when rotating, the sealing ring will be forced to be extruded as the second sealing column rotates. At this time, manually pull and lift the valve and the rotating rod connected below for replacement.

[0009] After the replacement is completed, install the new sealing ring and the valve and the rotating rod connected below into the main body, align the two sliding cavities on the outer side of the sealing ring with the two groups of fixed blocks inside the second sealing column for engagement. Then, rotate the second sealing column counterclockwise through the two fixed rods at the top of the second sealing column. At the same time, through the cooperation of the two sliding cavities and the two groups of fixed blocks, engage the sealing ring, make one end of the rotating rod fit inside the rotating shaft to form a seal, and at the same time align the cavity reserved on the second sealing column with the cavity on the first sealing column to ensure that the water flow is not affected.

[0010] Through the above structure, when the sealing effect deteriorates due to the contact between the valve core and the valve seat for a long time during frequent operation, resulting in wear of the contact sealing surface between the two, the entire valve core can be repaired or replaced. The repair cost is low and the efficiency is high. When repairing, it can also seal the main body.

[0011] Furthermore, connection rings are arranged at both ends of the main body, and multiple through holes matching with external screws are arranged on the connection rings.

[0012] By adopting the above technical solution, the through holes arranged on the connection rings can be fixed with the outside through screws to prevent water leakage.

[0013] Furthermore, a valve rotating rod is movably connected to the top of the sealing ring, and the valve rotating rod is fixed to the rotating rod by welding.

[0014] By adopting the above technical solution, the rotating rod is rotated through the valve rotating rod. Also, because the rotating rod is fixed to the valve, the angle of the valve can be controlled through the valve rotating rod.

[0015] Furthermore, a valve is movably connected to the outside of the rotating rod, and the rotating rod is slidably connected to the sealing ring through a bearing arranged on the outside of the rotating rod.

[0016] By adopting the above technical solution, the valve is fixed to the rotating rod by welding. When the rotating rod rotates, the sealing ring will not rotate together, resulting in jamming.

[0017] Furthermore, a rotating shaft is arranged at the bottom end of the rotating rod, and a bearing is arranged between the rotating shaft and the rotating rod.

[0018] By adopting the above technical solution, one end of the rotating rod fits with the inner cavity of the rotating shaft. Through the bearing arranged inside the rotating shaft, the friction generated by rotation can be reduced as much as possible.

[0019] Furthermore, two groups of fixing rods are arranged at the top of the first sealing column, and a cavity that fits with the rotating shaft is arranged inside the main body.

[0020] By adopting the above technical solution, the two groups of fixing rods are respectively inclined outward at a certain angle, and the outer sides of the fixing rods are relatively smooth, which is convenient for manual pulling.

[0021] To sum up, the utility model mainly has the following beneficial effects: By installing a sealing ring inside the utility model, the fixing rods of the second sealing column can be manually rotated inside, which can ensure that when the valve is replaced, the water inside the main body will not flow out. Even in the case of no valve core, sealing can also be carried out. After rotation, the two groups of fixing blocks inside will be driven to slide along the internal sliding cavity, so that the valve and the rotating rod arranged at the bottom end of the sealing ring slide outward. When the second sealing column is twisted to the appropriate position, the sealing ring will release self-locking and can be taken out from the outside for replacement. This plays a role in being simple and fast when replacing the valve core, having high maintenance efficiency, and being able to form a seal for the water pipe during replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 is a schematic diagram of the internal structure of the utility model;

[0024] Figure 3 is a schematic diagram of a partial structure of the utility model;

[0025] Figure 4 is a schematic diagram of a local structure of the utility model;

[0026] Figure 5 is of the utility model Figure 4 enlarged view of part A.

[0027] In the figure: 1, main body; 2, connecting ring; 3, fixing rod; 4, sealing ring; 5, valve rotating rod; 6, sliding cavity; 7, valve; 8, first sealing column; 9, rotating rod; 10, rotating shaft; 11, second sealing column; 12, fixing block. DETAILED DESCRIPTION OF THE INVENTION

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0029] Next, according to the overall structure of the present utility model, its embodiments will be described.

[0030] A regulating valve spool, as Figures 1-5 shown, includes a main body 1. A first sealing column 8 is fixed inside the main body 1. Two groups of fixing rods 3 are arranged at the top of the first sealing column 8. Two cavities matching the main body are arranged outside the sealing column 8 to facilitate the flow of water. And the first sealing column 8 is fixed inside the main body 1. The two groups of fixing rods 3 are respectively inclined outward at a certain angle, and the outer sides of the fixing rods 3 are relatively smooth to facilitate manual pulling;

[0031] Exemplarily, a second sealing column 11 is movably connected inside the first sealing column 8, and a sealing ring 4 is movably connected inside the second sealing column 11. The first sealing column 8 and the second sealing column 11 can slide relative to each other, but due to the formation of a certain seal, the resistance is relatively large;

[0032] In some examples, a rotating rod 9 is arranged inside the sealing ring 4 and penetrates through it. A valve rotating rod 5 is movably connected to the top of the sealing ring 4. A cavity just fitting the rotating rod 9 is reserved on the sealing ring 4 to prevent water from flowing out. Further, the rotating rod 9 is fixed inside the valve rotating rod 5, and the valve rotating rod 5 can be rotated to rotate the fixed rotating rod 9;

[0033] Further, a valve rotating rod 5 is movably connected to the top of the sealing ring 4. The valve rotating rod 5 and the rotating rod 9 are fixed by welding. The sealing ring 4 and the valve rotating rod 5 can rotate relative to each other, but the valve rotating rod 5 cannot move up and down;

[0034] Exemplarily, a valve 7 is movably connected to the outside of the rotating rod 9. The rotating rod 9 and the valve 7 are slidably connected through a bearing arranged on the outside of the rotating rod 9. The rotating rod 9 and the valve 7 are fixedly connected by welding to ensure that when the rotating rod 9 rotates, the valve 7 can be driven;

[0035] In some examples, two fixing blocks 12 are arranged inside the second sealing column 11. Two sliding cavities 6 matching the fixing blocks 12 are arranged outside the sealing ring 4. The fixing blocks 12 are fixed to the second sealing column 11 by welding, avoiding the problem of the fixing blocks 12 falling off when the second sealing column 11 rotates. When the fixing blocks 12 slide in the sliding cavities 6 outside the sealing ring 4, since the positions of the fixing blocks 12 remain unchanged, the whole sealing ring 4 will be forced to move slowly;

[0036] Furthermore, a rotating shaft 10 is provided at the bottom end of the rotating rod 9, and a bearing is provided between the rotating shaft 10 and the rotating rod 9. A cavity that fits the rotating shaft 10 is provided inside the main body 1. The outer diameter of one end of the rotating rod 9 matches the inner diameter of the inner cavity of the rotating shaft 10. By means of the bearing provided inside the rotating shaft 10, the friction generated by rotation can be minimized as much as possible.

[0037] The working principle of the present utility model is as follows: During use, a person twists the valve 7 through the valve rotating rod 5 to seal the water flowing inside the main body 1 with the valve 7;

[0038] Then, the staff member pulls the fixing rod 3 at the top end of the second sealing column 11 with both hands and rotates the fixing rod 3 manually in the clockwise direction. While the second sealing column 11 is rotating, the two fixing blocks 12 provided inside the second sealing column 11 will move in the two sliding cavities 6 reserved inside the sealing ring 4. Also, since 11 is fixed and the sealing ring 4 is relatively loose, during rotation, the sealing ring 4 will be forced out as the second sealing column 11 rotates. At this time, the staff member pulls 5 manually to lift 4 and the valve 7 and the rotating rod 9 connected below for replacement;

[0039] After the replacement is completed, the new sealing ring 4 and the valve 7 and the rotating rod 9 connected below are installed inside the main body 1, so that the two sliding cavities 6 on the outer side of the sealing ring 4 are aligned with the two fixing blocks 12 inside the second sealing column 11 for engagement. Then, the second sealing column 11 is rotated counterclockwise through the two fixing rods 3 at the top end of the second sealing column 11. At the same time, through the cooperation of the two sliding cavities 6 and the two fixing blocks 12, the sealing ring 4 is engaged, so that one end of the rotating rod 9 fits inside the rotating shaft 10 to form a seal. At the same time, the cavity reserved on the second sealing column 11 is aligned with the cavity on the first sealing column 8 to ensure that the water flow is not affected;

[0040] Through the above structure, when the contact sealing surface between the valve core and the valve seat is worn due to frequent contact and long-term working collision, resulting in a poor sealing effect, the entire valve core can be repaired or replaced. The repair cost is low and the efficiency is high. At the same time of repair, the main body 1 can also be sealed.

[0041] Although the embodiments of the present utility model have been shown and described, the specific embodiments are only explanations of the present utility model and are not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A regulating valve spool, comprising a main body (1), characterized in that: A first sealing column (8) is fixedly installed inside the main body (1). A second sealing column (11) is movably connected inside the first sealing column (8). A sealing ring (4) is movably connected inside the second sealing column (11). A rotating rod (9) passing through the sealing ring (4) is arranged inside the sealing ring (4). A valve rotating rod (5) is movably connected to the top end of the sealing ring (4). Two fixing blocks (12) are arranged inside the second sealing column (11). Two sliding cavities (6) matching with the fixing blocks (12) are arranged on the outer side of the sealing ring (4).

2. The control valve spool according to claim 1, wherein: Connection rings (2) are arranged at both ends of the main body (1), and multiple through holes matching with external screws are arranged on the connection rings (2).

3. A regulating valve spool according to claim 1, characterized in that: A valve rotating rod (5) is movably connected to the top end of the sealing ring (4), and the valve rotating rod (5) is fixed to the rotating rod (9) by welding.

4. A control valve spool according to claim 1, characterized in that: A valve (7) is movably connected to the outer side of the rotating rod (9), and the rotating rod (9) is slidably connected to the sealing ring (4) through a bearing arranged on the outer side of the rotating rod (9).

5. A regulating valve spool according to claim 1, characterized in that: A rotating shaft (10) is arranged at the bottom end of the rotating rod (9), and a bearing is arranged between the rotating shaft (10) and the rotating rod (9).

6. The spool of a regulating valve according to claim 1, characterized in that: Two fixing rods (3) are arranged at the top end of the first sealing column (8), and a cavity fitting with the rotating shaft (10) is arranged inside the main body (1).

Images