A dual-adjustment concealed sealing auxiliary regulating valve

Abstract

This utility model discloses a dual-adjustment concealed sealing type regulating valve, including a regulating valve body, a regulating valve seat, a regulating valve core, and a regulating valve stem. The regulating valve body has a material inlet hole, a lower chamber, an upper chamber, and a material outlet hole connected sequentially inside. The regulating valve seat is located in the lower chamber, and the regulating valve core is located in the upper chamber. The lower end of the regulating valve stem is connected to the upper end of the regulating valve core. The upper end of the regulating valve seat has a valve seat sealing ring, and the lower end of the regulating valve core has a valve core sealing ring that matches the valve seat sealing ring. This utility model's dual-adjustment concealed sealing type regulating valve has a valve seat sealing ring and a valve core sealing ring, which, through their cooperation, achieve a good sealing effect. The arc-shaped adjusting head of the regulating valve core fits against the inner wall of the regulating valve seat, further improving the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of flow control technology, and in particular to a dual-adjustment concealed sealing type regulating valve. Background Technology

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and regulate and control the parameters (temperature, pressure, and flow rate) of the conveyed medium. They have functions such as shut-off, regulation, flow diversion, backflow prevention, pressure stabilization, flow splitting, or overflow pressure relief. Control valves, also known as regulating valves, are key devices in industrial automation process control for regulating parameters such as flow rate, pressure, temperature, and liquid level of the medium, and are widely used in chemical, power, and metallurgical industries. The valve core is a crucial component of the valve; the valve body achieves directional control, pressure control, or flow control through the movement of the valve core. Valves have high requirements for sealing design. Traditional valve core assemblies have simple structures, and the valve core and seat wear extremely quickly under the scouring action of high-temperature, high-pressure fluids over long periods, leading to incomplete valve closure and internal leakage. Utility Model Content

[0003] The purpose of this utility model is to solve the technical problems in the prior art. In order to solve the above problems, this utility model proposes a dual-adjustment concealed sealing type regulating valve.

[0004] The technical solution adopted by this utility model is:

[0005] A dual-adjustment concealed sealing type regulating valve includes a regulating valve body, a regulating valve seat, a regulating valve core, and a regulating valve stem. The regulating valve body has a material inlet hole, a lower chamber, an upper chamber, and a material outlet hole connected in sequence inside. The regulating valve seat is located in the lower chamber, and the regulating valve core is located in the upper chamber. The lower end of the regulating valve stem is connected to the upper end of the regulating valve core. The upper end of the regulating valve seat is provided with a valve seat sealing ring, and the lower end of the regulating valve core is provided with a valve core sealing ring that matches the valve seat sealing ring.

[0006] Preferably, the lower end face of the valve core sealing ring is a plane, and the upper end face of the valve seat sealing ring matches the shape of the lower end face of the valve core sealing ring.

[0007] Preferably, the lower end face of the valve core sealing ring is a valve core annular chamfered sealing surface, and the angle between the chamfered surface of the valve core sealing ring and the center line of the valve core sealing ring is α, where 75 degrees ≥ α ≥ 30 degrees; the upper end face of the valve seat sealing ring matches the shape of the lower end face of the valve core sealing ring.

[0008] Preferably, the angle α between the inclined surface of the valve core sealing ring and the center line of the valve core sealing ring is 60 degrees.

[0009] Preferably, the regulating valve seat is a cylindrical structure with an open top, and the side wall of the regulating valve seat is provided with several valve seat diversion holes.

[0010] Preferably, the upper chamber of the regulating valve body is provided with a valve core outer retainer, which is a hollow cylindrical structure; the regulating valve core is slidably mounted in the valve core outer retainer; the side wall of the valve core outer retainer is provided with a plurality of outer retainer diversion holes.

[0011] Preferably, a valve seat retaining ring is fitted onto the outer end face of the regulating valve seat near the upper end.

[0012] Preferably, the upper end face of the regulating valve core is provided with a valve core hole, and the lower end of the regulating valve stem is locked in the valve core hole by a locking assembly.

[0013] Preferably, the upper end face of the regulating valve core is provided with a valve core pressure plate, the valve core pressure plate is provided with a pressure plate center hole, and the regulating valve stem is inserted into the pressure plate center hole.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) The dual-adjustment concealed sealing type regulating valve of this utility model is provided with a valve seat sealing ring and a valve core sealing ring. The valve seat sealing ring and the valve core sealing ring cooperate to achieve a better sealing effect. Both the valve seat sealing ring and the valve core sealing ring are made of elastic material, which can delay the wear of the regulating valve. The arc-shaped adjusting head of the regulating valve core fits against the inner wall of the regulating valve seat, further improving the sealing effect.

[0016] (2) The valve seat of the gate valve is provided with a valve seat diversion hole on the side wall. The valve seat diversion hole plays the role of reducing pressure and diverting the inflow fluid. The valve core outer retainer is provided with an outer retainer diversion hole on the side wall. The outer retainer diversion hole plays the role of reducing pressure and diverting the outflow fluid.

[0017] (3) The valve seat sealing ring is provided with a valve seat annular chamfered sealing surface, and the valve core sealing ring is provided with a valve core annular chamfered sealing surface. The valve seat annular chamfered sealing surface and the valve core annular chamfered sealing surface improve the sealing effect.

[0018] The dual-adjustment concealed sealing type regulating valve of this utility model has a reasonable structural design, strong practicality, and high practical value. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0020] Figure 2 for Figure 1 Enlarged view of A in the image;

[0021] Figure 3 for Figure 2A schematic diagram showing the connection relationship between the valve seat, valve core, valve seat seal ring, and valve core seal ring of the stop valve.

[0022] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0023] Figure 5 for Figure 4 Enlarged view of B in the image;

[0024] Figure 6 for Figure 5 A schematic diagram showing the connection relationship between the valve seat, valve core, valve seat seal ring, and valve core seal ring of the stop valve.

[0025] In the diagram: 1-Regulating valve body, 2-Regulating valve seat, 3-Regulating valve core, 4-Regulating valve stem, 5-Thrust bearing, 6-Valve stem nut, 7-Handwheel, 8-Valve seat retaining ring, 9-Valve seat sealing ring, 10-Valve core sealing ring, 11-Valve core outer retaining seat, 12-Locking assembly, 13-Valve core pressure plate; 101-Material inlet hole, 102-Material outlet hole, 103-Lower chamber, 104-Upper chamber, 201-Valve seat diversion hole, 301-Arc-shaped adjusting head, 901-Valve seat annular bevel sealing surface, 1001-Valve core annular bevel sealing surface, 111-Outer retaining seat diversion hole. Detailed Implementation

[0026] The present invention will now be further described with reference to the accompanying drawings.

[0027] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "upper", "lower", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0029] A dual-adjustment concealed sealing type regulating valve includes a regulating valve body 1, a regulating valve seat 2, a regulating valve core 3, and a regulating valve stem 4. The regulating valve body 1 has a material inflow hole 101, a lower chamber 103, an upper chamber 104, and a material outflow hole 102 connected sequentially inside. The material inflow hole 101 communicates with the lower chamber 103, the upper end of the lower chamber 103 communicates with the lower end of the upper chamber 104, and the material outflow hole 102 communicates with the upper chamber 104. The regulating valve seat 2 is located in the lower chamber 103, the regulating valve core 3 is located in the upper chamber 104, and the lower end of the regulating valve stem 4 is connected to the upper end of the regulating valve core 3. A support frame is connected to the upper end of the regulating valve body 1. The support frame contains a thrust bearing 5 and a valve stem nut 6. The valve stem nut 6 is mounted in the support frame through the thrust bearing 5, and the regulating valve stem 4 is rotatably mounted through the thrust bearing 5 (threaded connection). A handwheel 7 is connected to the upper end of the valve stem nut 6. Rotating the handwheel 7 causes the valve stem nut 6 to rotate, which in turn causes the regulating valve stem 4 and the regulating valve core 3 to move up and down. The connection structure of the regulating valve stem 4, thrust bearing 5, valve stem nut 6, and handwheel 7 is conventional and will not be described in detail here.

[0030] See Figure 3 The upper end of the valve seat 2 of the regulating valve is provided with a valve seat sealing ring 9, and the lower end of the valve core 3 of the regulating valve is provided with a valve core sealing ring 10 that matches the valve seat sealing ring 9. The lower end face of the valve core sealing ring 10 is flat, and the shape of the upper end face of the valve seat sealing ring 9 matches the lower end face of the valve core sealing ring 10. See also Figure 3 In this embodiment, the valve core sealing ring 10 is disposed in the lower annular groove at the lower end of the regulating valve core 3. By setting the lower annular groove, the valve core sealing ring 10 can be accurately positioned and fixed. The lower end of the regulating valve core 3 is provided with an arc-shaped adjusting head 301 that matches the upper opening of the regulating valve seat 2. By setting the arc-shaped adjusting head 301, it serves a guiding and sealing function.

[0031] The regulating valve seat 2 is a cylindrical structure with an open top, and the side wall of the regulating valve seat 2 is provided with several valve seat diversion holes 201. The valve seat diversion holes 201 serve to reduce pressure and divert the inflowing fluid.

[0032] The upper chamber 104 of the regulating valve body 1 is provided with a valve core outer retainer 11, which is a hollow cylindrical structure. The regulating valve core 3 is slidably mounted in the valve core outer retainer 11. The side wall of the valve core outer retainer 11 is provided with several outer retainer diversion holes 111. The outer retainer diversion holes 111 serve to reduce pressure and divert the outflowing fluid.

[0033] A valve seat retainer 8 is fitted onto the outer end face of the regulating valve seat 2 near the upper end. The valve seat retainer 8 serves to fix the regulating valve seat 2 and provides a certain degree of sealing.

[0034] The upper end face of the regulating valve core 3 has a valve core hole at its center, and the lower end of the regulating valve stem 4 is locked in the valve core hole by a locking assembly 12. The locking assembly 12 includes two semi-circular arc-shaped sleeves, which fit together on the regulating valve stem 4. After the two semi-circular arc-shaped sleeves fit together, they are threadedly connected to the valve core hole. Specifically, the two semi-circular arc-shaped sleeves have external threads, and the inner wall of the valve core hole has internal threads that match the external threads of the semi-circular arc-shaped sleeves, thus achieving a threaded connection.

[0035] The upper end face of the regulating valve core 3 is provided with a valve core pressure plate 13, and the valve core pressure plate 13 has a pressure plate center hole, through which the regulating valve stem 4 is inserted. The valve core pressure plate 13 serves to fix the valve.

[0036] The working principle of this embodiment:

[0037] See Figure 1-2 When the dual-adjustment concealed sealing type regulating valve is in the closed state, the upper end face of the valve seat sealing ring 9 is in contact with the lower end face of the valve core sealing ring 10 to achieve a sealing effect; in addition, the arc-shaped adjusting head 301 of the regulating valve core 3 is in contact with the inner wall of the regulating valve seat 2 to achieve a sealing effect.

[0038] Turning handwheel 7 causes valve stem nut 6 to rotate, which in turn moves valve stem 4 and valve core 3 of the regulating valve upwards. This causes valve seat sealing ring 9 and valve core sealing ring 10 to separate, opening the double-adjustment concealed sealing type regulating valve. Material flows from material inlet hole 101 into the lower chamber 103 of the regulating valve body 1, then from the valve seat diversion hole 201 into the inner cavity of the regulating valve seat 2, and then from the inner cavity of the regulating valve seat 2 into the inner cavity of the valve core outer retainer 11. Finally, it flows through the outer retainer diversion hole 111 of the regulating valve seat 2 into the material outlet hole 102.

[0039] This utility model's dual-adjustment concealed sealing type regulating valve is equipped with a valve seat sealing ring 9 and a valve core sealing ring 10. The cooperation between the valve seat sealing ring 9 and the valve core sealing ring 10 achieves a good sealing effect. Both the valve seat sealing ring 9 and the valve core sealing ring 10 are made of elastic materials (rubber materials can be used), which can delay the wear of the regulating valve. The arc-shaped adjusting head 301 of the regulating valve core 3 fits against the inner wall of the regulating valve seat 2, further improving the sealing effect.

[0040] Example 2 is an improvement on Example 1. The similarities will not be repeated here; the differences are as follows:

[0041] The lower end face of the valve core sealing ring 10 is the valve core annular chamfered sealing surface 1001. The angle between the chamfered surface of the valve core sealing ring 10 and the center line of the valve core sealing ring 10 is α, where 75 degrees ≥ α ≥ 30 degrees. The upper end face of the valve seat sealing ring 9 matches the shape of the lower end face of the valve core sealing ring 10.

[0042] See Figure 6 In this embodiment, the angle α between the inclined surface of the valve core sealing ring 10 and the center line of the valve core sealing ring 10 is 60 degrees. The valve seat annular inclined sealing surface 901 of the valve seat sealing ring 9 and the valve core annular inclined sealing surface 1001 of the valve core sealing ring 10 are in contact.

[0043] The dual-adjustment concealed sealing type regulating valve of this utility model is provided with a valve seat sealing ring 9 and a valve core sealing ring 10. The valve seat sealing ring 9 and the valve core sealing ring 10 are fitted with bevels to achieve a better sealing effect.

[0044] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A double regulating concealed seal pair type regulating valve characterized by, The device includes a regulating valve body, a regulating valve seat, a regulating valve core, and a regulating valve stem. The regulating valve body has a material inlet hole, a lower chamber, an upper chamber, and a material outlet hole that are connected in sequence inside the regulating valve body. The regulating valve seat is located in the lower chamber, and the regulating valve core is located in the upper chamber. The lower end of the regulating valve stem is connected to the upper end of the regulating valve core. The upper end of the regulating valve seat is provided with a valve seat sealing ring, and the lower end of the regulating valve core is provided with a valve core sealing ring that matches the valve seat sealing ring. The lower end of the regulating valve core is provided with an arc-shaped adjusting head.

2. The double regulating concealed seal bonnet valve in accordance with claim 1, wherein, The lower end face of the valve core sealing ring is a plane, and the upper end face of the valve seat sealing ring matches the shape of the lower end face of the valve core sealing ring.

3. The double regulating concealed seal trim valve in accordance with claim 1, wherein, The lower end face of the valve core sealing ring is a valve core annular chamfered sealing surface, and the angle between the chamfered surface of the valve core sealing ring and the center line of the valve core sealing ring is α, 75 degrees ≥ α ≥ 30 degrees; the upper end face of the valve seat sealing ring matches the shape of the lower end face of the valve core sealing ring.

4. The double regulating concealed seal trim valve in accordance with claim 3, wherein, The angle α between the inclined surface of the valve core sealing ring and the center line of the valve core sealing ring is 60 degrees.

5. The double regulating concealed seal slide valve according to any one of claims 2 or 4, wherein, The regulating valve seat is a cylindrical structure with an open top, and the side wall of the regulating valve seat is provided with several valve seat diversion holes.

6. The double regulating concealed seal trim valve in accordance with claim 5, wherein, The upper chamber of the regulating valve body is provided with a valve core outer retainer, which is a hollow cylindrical structure; the regulating valve core is slidably installed in the valve core outer retainer; the side wall of the valve core outer retainer is provided with several outer retainer diversion holes.

7. The double regulating concealed seal trim valve in accordance with claim 6, wherein, The regulating valve seat has a seat retaining ring fitted on its outer end face near the upper end.

8. The double regulating concealed seal trim valve in accordance with claim 7, wherein, The upper end face of the regulating valve core is provided with a valve core hole, and the lower end of the regulating valve stem is locked in the valve core hole by a locking assembly.

9. The double regulating concealed seal trim valve in accordance with claim 8, wherein, The upper end face of the regulating valve core is provided with a valve core pressure plate, the valve core pressure plate is provided with a pressure plate center hole, and the regulating valve stem is inserted into the pressure plate center hole.

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