Marine orifice plate control valve

Abstract

The utility model discloses a marine pore plate control valve which comprises a valve body, a first valve rod, a second valve rod and a pore plate sealing ring, the first valve rod and the second valve rod are respectively arranged at two ends of the pore plate sealing ring, the pore plate sealing ring is located in the valve body, the first valve rod is matched with a first rod hole in the valve body in a rotating mode, and the second valve rod is matched with a second rod hole in the valve body in a rotating mode. The first valve rod is arranged in a first rod hole in the valve body, the second valve rod is rotationally matched with a second rod hole in the valve body, the bearing is arranged in the first rod hole and rotationally matched with the first valve rod, the clamping spring is arranged on the first valve rod, and the bearing is located between the clamping spring and the pore plate sealing ring. Compared with the prior art, the control valve has the following beneficial effects that the clamping spring is arranged on the first valve rod, the bearing is blocked through the clamping spring, the bearing is prevented from being blown out, and the reliability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve field especially relates to a marine orifice plate control valve. BACKGROUND

[0002] The butterfly valve is often used in the ship ballast water treatment system, the patent announcement document CN216200624U discloses a kind of eccentric butterfly valve for ship, the rotation of the disc plate in this structure eccentric butterfly valve is controlled by valve stem, but in this structure eccentric butterfly valve, any limit structure is not set on valve stem, so when the pressure in valve body is larger, bearing between valve stem and valve body has certain probability to be blown out. UTILITY MODEL CONTENT

[0003] The utility model provides a kind of marine orifice plate control valve to above-mentioned problems, by setting snap spring on first valve stem, bearing is blocked using snap spring, avoid bearing blowing out, more reliable.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A kind of marine orifice plate control valve, including valve body, first valve stem, second valve stem and orifice plate seal ring, the first valve stem and second valve stem are respectively set at the both ends of orifice plate seal ring, the orifice plate seal ring is located in the valve body, the first valve stem and the first stem hole on valve body are rotatably connected together, the second valve stem and the second stem hole on valve body are rotatably connected together, further including bearing and snap spring, the bearing is set in the first stem hole, and the bearing and the first valve stem are rotatably connected together, the snap spring is set on the first valve stem, the bearing is located between the snap spring and orifice plate seal ring.

[0006] In this kind of control valve, the existence of bearing can play a rotating support role to the first valve stem, ensure that the first valve stem (together with orifice plate seal ring and second valve stem) is more stable when rotating, and at the same time, since snap spring is set on the first valve stem, snap spring can hinder bearing, when bearing has the tendency to be blown out, snap spring can block bearing to avoid bearing being blown out.

[0007] As described above, in this kind of control valve, by setting snap spring on the first valve stem, bearing is blocked using snap spring, to avoid bearing blowing out, more reliable.

[0008] Optionally, it further includes filler, and the filler is arranged in the first stem hole.

[0009] The function of the filler is to seal between the second valve stem and the valve body.

[0010] Optionally, a compression ring is arranged in the first rod hole, and a compression cover is arranged in the first rod hole, the compression ring is in close contact with the packing, the compression cover is in close contact with the packing, and the compression ring is located between the packing and the compression cover.

[0011] The compression cover and the compression ring are used for compressing the packing.

[0012] Optionally, an anti-extrusion ring is arranged between the packing and the snap spring, and the anti-extrusion ring is located in the first rod hole.

[0013] The anti-extrusion ring is used for further improving the blocking effect of the snap spring on the bearing.

[0014] Optionally, a shaft sleeve is arranged in the second rod hole, the shaft sleeve is located between the second valve rod and the valve body, and a plug is arranged at the hole opening of the second rod hole.

[0015] The plug is used for sealing the second rod hole, and the shaft sleeve is used for improving the stability of the second valve rod during rotation.

[0016] Optionally, a top cover is arranged at one end of the valve body, one end of the top cover is provided with a connecting plate, a graphite gasket is arranged between the top cover and the connecting plate, the first valve rod is rotationally matched with a through hole on the connecting plate, and a sealing ring is arranged between the first valve rod and the connecting plate.

[0017] The sealing ring is used for sealing between the first valve rod and the connecting plate, and the graphite gasket is used for sealing between the top cover and the connecting plate, so that the packing is prevented from escaping during use.

[0018] Optionally, a valve seat is arranged on the valve body.

[0019] The valve seat is used for being in contact with a hole plate sealing ring to realize opening and closing.

[0020] In the control valve, the hole plate sealing ring adopts a back recess design to increase the flow volume. In the full closing state, the hole plate sealing ring can realize large medium flow due to the opening on the valve plate. In the full opening state, the hole plate sealing ring has small flow resistance, and is beneficial to rapid discharge of the medium. The hole plate sealing ring and the valve seat both adopt a three-eccentric conical surface design, so that friction is small during opening and closing, sealing torque is low, and small wear can be ensured under long-term operation adjustment.

[0021] Optionally, the first valve rod and the second rod are on a straight line.

[0022] The control valve has the beneficial effects that the snap spring is arranged on the first valve rod, the snap spring is used for blocking the bearing, bearing blowout is avoided, and reliability is higher. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0024] Figure 1 is a structural schematic diagram of a ship orifice plate control valve;

[0025] Figure 2 is Figure 1 is a sectional view of B-B direction in figure 1;

[0026] Figure 3 is Figure 2 is an enlarged schematic diagram of C in figure 1.

[0027] The reference signs in the drawings are as follows: 1, valve body; 2, bearing; 3, clasp spring; 4, first valve rod; 5, second valve rod; 6, packing; 7, anti-extrusion ring; 8, orifice plate sealing ring; 9, valve seat; 10, compression ring; 11, gland; 12, plug; 13, top cover; 14, connecting plate; 15, screw; 17, shaft sleeve; 18, sealing ring; 19, graphite gasket. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0029] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the present application, therefore the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn in proportion to the actual proportions. The techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] As shown in Figs. Figure 1 , Figs. Figure 2 and Figs. Figure 3 , a marine orifice plate control valve includes a valve body 1, a first valve stem 4, a second valve stem 5 and an orifice plate sealing ring 188, the first valve stem 4 and the second valve stem 5 are respectively arranged at both ends of the orifice plate sealing ring 188, the orifice plate sealing ring 188 is located in the valve body 1, the first valve stem 4 and the first stem hole on the valve body 1 are rotatably connected together, the second valve stem 5 and the second stem hole on the valve body 1 are rotatably connected together, further including a bearing 2 and a circlip 3, the bearing 2 is arranged in the first stem hole, and the bearing 2 and the first valve stem 4 are rotatably connected together, the circlip 3 is arranged on the first valve stem 4, and the bearing 2 is located between the circlip 3 and the orifice plate sealing ring 188.

[0032] In this kind of control valve, the bearing 2 can provide rotational support for the first valve stem 4, ensuring that the first valve stem 4 (together with the orifice plate sealing ring 188 and the second valve stem 5) rotates more stably, and because the circlip 3 is arranged on the first valve stem 4, the circlip 3 can hinder the bearing 2, when the bearing 2 has a tendency to be blown out, the circlip 3 can block the bearing 2 to prevent the bearing 2 from being blown out.

[0033] In summary, in this kind of control valve, by arranging the circlip 3 on the first valve stem 4, the circlip 3 hinders the bearing 2, avoiding the bearing 2 from being blown out, and the reliability is stronger.

[0034] As shown in Figs. Figure 1 , Figs. Figure 2 and Figs. Figure 3 , further including a packing 6, the packing 6 is arranged in the first stem hole.

[0035] The function of the packing 6 is to seal between the second valve stem 5 and the valve body 1.

[0036] As shown in Figs. Figure 1 , Figs.Figure 2 and appendix Figure 3 As shown, it also includes a pressure ring 10 and a pressure cap 11. The pressure ring 10 is disposed in the first rod hole, and the pressure cap 11 is disposed in the first rod hole. The pressure ring 10 is close to the packing 6, and the pressure cap 11 is close to the packing 6. The pressure ring 10 is located between the packing 6 and the pressure cap 11.

[0037] The function of the gland 11 and the pressure ring 10 is to compress the packing 6.

[0038] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, it also includes an anti-extrusion ring 7, which is disposed between the packing 6 and the retaining ring 3, and is located in the first rod hole.

[0039] The function of the anti-extrusion ring 7 is to further enhance the obstruction effect of the retaining ring 3 on the bearing 2.

[0040] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, a bushing 17 is provided in the second rod hole, and the bushing 17 is located between the second valve stem 5 and the valve body 1. A plug 12 is provided at the opening of the second rod hole.

[0041] The plug 12 is used to seal the second rod hole, and the bushing 17 is used to improve the stability of the second valve stem 5 when it rotates.

[0042] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, a top cover 13 is provided at one end of the valve body 1, a connecting plate 14 is provided at one end of the top cover 13, a graphite gasket 19 is provided between the top cover 13 and the connecting plate 14, the first valve stem 4 is rotatably engaged with the through hole on the connecting plate 14, and a sealing ring 18 is provided between the first valve stem 4 and the connecting plate 14.

[0043] The sealing ring 18 serves to seal between the first valve stem 4 and the connecting plate 14, while the graphite gasket 19 serves to seal between the top cover 13 and the connecting plate 14, thereby reducing the leakage of the packing 6 during use.

[0044] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 As shown, it also includes a valve seat 9, which is disposed on the valve body 1.

[0045] Specifically, the function of valve seat 9 is to contact the orifice plate sealing ring 188 to achieve opening and closing.

[0046] In this type of control valve, the orifice plate seal 188 features a recessed back design to increase the flow volume. When fully closed, the orifice plate seal 188 allows for greater media flow due to the orifice being on the valve plate. When fully open, the orifice plate seal 188 exhibits low flow resistance, facilitating rapid media discharge. Specifically, both the orifice plate seal 188 and the valve seat 9 employ a triple-eccentric conical surface design, resulting in low friction and low sealing torque during opening and closing, ensuring minimal wear during long-term operation and adjustment.

[0047] As attached Figure 1 Appendix Figure 2 and appendix Figure 3 Figure 1 Figure 2 Figure 3 As shown, the first valve stem 4 and the second stem are in a straight line.

[0048] The above-described embodiments only illustrate some aspects of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that 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 improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A marine orifice plate control valve, comprising a valve body, a first valve stem, a second valve stem, and an orifice plate sealing ring, wherein the first valve stem and the second valve stem are respectively disposed at both ends of the orifice plate sealing ring, the orifice plate sealing ring is located within the valve body, the first valve stem is rotatably engaged with a first stem hole on the valve body, and the second valve stem is rotatably engaged with a second stem hole on the valve body, characterized in that, It also includes a bearing and a retaining ring. The bearing is disposed in the first rod hole and is rotatably engaged with the first valve stem. The retaining ring is disposed on the first valve stem and the bearing is located between the retaining ring and the orifice plate sealing ring.

2. The marine orifice plate control valve according to claim 1, characterized in that, It also includes a packing material disposed within the first rod hole.

3. A marine orifice plate control valve according to claim 2, characterized in that, It also includes a pressure ring and a pressure cap. The pressure ring is disposed in the first rod hole, and the pressure cap is disposed in the first rod hole. The pressure ring is close to the packing, and the pressure cap is close to the packing. The pressure ring is located between the packing and the pressure cap.

4. A marine orifice plate control valve according to claim 2, characterized in that, It also includes an anti-extrusion ring, which is disposed between the packing and the retaining ring and is located inside the first rod hole.

5. A marine orifice plate control valve according to claim 1, characterized in that, A bushing is provided inside the second rod hole, the bushing being located between the second valve stem and the valve body, and a plug is provided at the opening of the second rod hole.

6. A marine orifice plate control valve according to claim 1, characterized in that, A top cover is provided at one end of the valve body, and a connecting plate is provided at one end of the top cover. A graphite gasket is provided between the top cover and the connecting plate. The first valve stem is rotatably engaged with a through hole on the connecting plate, and a sealing ring is provided between the first valve stem and the connecting plate.

7. A marine orifice plate control valve according to claim 1, characterized in that, It also includes a valve seat, which is disposed on the valve body.

8. A marine orifice plate control valve according to claim 1, characterized in that, The first valve stem and the second valve stem are in a straight line.

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