Nodular cast iron valve plate

Abstract

The utility model discloses a nodular cast iron valve plate which comprises a valve body and a valve plate body movably installed in the valve body, a set of limiting mechanisms are installed on the two sides of the valve body in a staggered mode, and each limiting mechanism comprises a set of fixing bases, a set of pushing plates, a set of push-pull type electromagnets, a set of guiding sleeves and a set of limiting rods. The utility model has the beneficial effects that the group of limiting mechanisms are arranged on the two sides of the valve body in a staggered manner, when the valve shaft drives the valve plate to be closed, the push-pull ends of the group of push-pull type electromagnets extend, and the front end of the limiting rod is inserted into the limiting seat of the valve plate through the pushing plate, so that the valve plate is further limited except a power source; therefore, fluid pressure generated at the moment when the valve plate cuts off fluid circulation is avoided, the sealing performance of the valve plate is improved, a set of push-pull type electromagnets are adopted for driving, the reaction is faster, the mechanical structure is higher in limiting stability, and the service life is longer.

Description

Technical Field

[0001] The utility model relates to the technical field of valve components, in particular to a ductile iron valve plate. Background Art

[0002] Ductile iron valve bodies and discs are typically made of ductile iron. Suitable for pipelines conveying media such as oil, gas, and water, these valves offer advantages such as corrosion resistance, wear resistance, and a long service life. Compared to standard gray cast iron valve bodies and discs, these valves possess greater strength, toughness, and plasticity, making them more suitable for use in high-pressure, high-temperature piping systems.

[0003] The existing patent application number CN202321557609.X discloses a ductile iron centerline valve plate. This utilizes the magnetic attraction of an electromagnet and a magnet to further limit the valve plate's position beyond the power source, thereby preventing the fluid pressure generated when the valve plate cuts off fluid flow and improving the valve plate's sealing performance. However, using the electromagnet's magnetic attraction to limit the valve plate makes it susceptible to attracting impurities from the fluid, thus compromising the position-limiting effect and making cleaning more inconvenient.

[0004] It should be noted that the above content falls within the technical knowledge of the inventor and does not necessarily constitute prior art. Utility Model Content

[0005] In view of the above defects, the utility model provides a ductile iron valve plate to solve the valve plate limiting problem.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A ductile iron valve plate comprises a valve body and a valve plate movably mounted in the valve body, wherein a set of limiting mechanisms are staggeredly mounted on both sides of the valve body;

[0008] The limiting mechanism includes a group of fixed seats, a group of push plates, a group of push-pull electromagnets, a group of guide sleeves and a group of limit rods. A group of fixed seats are staggeredly installed on both sides of the valve body, a group of push plates have rear ends movably hinged in a group of fixed seats, a group of push-pull electromagnets have bottoms hinged in a group of fixed seats, and the push-pull ends are respectively hinged to the corresponding push plates, a group of guide sleeves are installed on one side of a group of fixed seats, and a group of limit rods are movably inserted in a group of guide sleeves.

[0009] Furthermore, a sealing ring is embedded in the outer edge of the valve plate, and a valve shaft is installed at the center.

[0010] Furthermore, a group of sealing sleeves are staggered and inlaid on both sides of the valve body, the front ends of a group of limit rods are movably inserted in the corresponding sealing sleeves, and O-rings are installed in each of the sealing sleeves.

[0011] Furthermore, a group of limit rods are respectively provided with grooves at the rear ends, and a group of push plates are respectively movably engaged in the corresponding grooves at the front ends.

[0012] Furthermore, a group of fixing seats are respectively provided with strip-shaped holes corresponding to the pushing plates.

[0013] Furthermore, a set of limit rods are respectively equipped with limit rings, a return spring is connected between the limit ring and the guide sleeve, and the return spring is sleeved on the limit rod.

[0014] Furthermore, a group of limit seats corresponding to the limit rods are staggeredly installed on the valve plate.

[0015] The utility model provides a ductile iron valve plate with the following beneficial effects: a group of limit mechanisms are staggeredly installed on both sides of the valve body; when the valve shaft drives the valve plate to close, the push-pull ends of a group of push-pull electromagnets extend, and the front end of the limit rod is inserted into the limit seat of the valve plate through the push plate, thereby realizing further limiting of the valve plate in addition to the power source, thereby avoiding the fluid pressure generated at the moment when the valve plate cuts off the fluid flow, improving the sealing performance of the valve plate, and adopting a group of push-pull electromagnets for driving, so the response is faster, and the limit stability and service life of the mechanical structure are higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a ductile iron valve plate described in the utility model.

[0017] Figure 2 This is a schematic diagram of the limiting mechanism of the utility model.

[0018] Figure 3 This is a cross-sectional view of the sealing sleeve of the present invention.

[0019] Figure 4 This is a rear view of the valve body of the present invention.

[0020] In the figure: 1. Valve body; 2. Valve plate; 3. Fixed seat; 4. Push plate; 5. Push-pull electromagnet; 6. Guide sleeve; 7. Limit rod; 8. Sealing ring; 9. Valve shaft; 10. Sealing sleeve; 11. O-ring; 12. Groove; 13. Strip hole; 14. Limit ring; 15. Return spring; 16. Limit seat. DETAILED DESCRIPTION

[0021] The present invention will be described in detail below with reference to the accompanying drawings. Figure 1-4As shown: a ductile iron valve plate, comprising a valve body 1 and a valve plate 2 movably mounted in the valve body 1, a group of limit mechanisms staggeredly mounted on both sides of the valve body 1; the limit mechanisms comprise a group of fixed seats 3, a group of push plates 4, a group of push-pull electromagnets 5, a group of guide sleeves 6 and a group of limit rods 7, a group of fixed seats 3 staggeredly mounted on both sides of the valve body 1, a group of push plates 4 rear ends movably hinged in a group of fixed seats 3, a group of push-pull electromagnets 5 bottoms hinged in a group of fixed seats 3, and the push-pull ends are respectively hinged to the corresponding push plates 4, a group of guide sleeves 6 mounted on one side of a group of fixed seats 3, a group of limit rods 7 movably inserted in a group of guide sleeves 6; a sealing ring 8 is embedded in the outer edge of the valve plate 2 , a valve shaft 9 is installed at the center; a group of sealing sleeves 10 are staggered on both sides of the valve body 1, and the front ends of a group of limit rods 7 are movably inserted in the corresponding sealing sleeves 10, and an O-ring 11 is installed in each sealing sleeve 10; a group of limit rods 7 have grooves 12 at the rear ends, and a group of push plates 4 are movably engaged in the corresponding grooves 12; a group of fixed seats 3 are respectively provided with strip holes 13 corresponding to the push plates 4; a group of limit rods 7 are respectively installed with limit rings 14, and a reset spring 15 is connected between the limit ring 14 and the guide sleeve 6, and the reset spring 15 is sleeved on the limit rod 7; a group of limit seats 16 corresponding to the limit rods 7 are staggered on the valve plate 2.

[0022] The working principle of this embodiment is as follows: the electrical equipment used in the device is controlled by an external controller, a sealing ring 8 is embedded in the outer edge of the valve plate 2, and a valve shaft 9 is installed in the center. The valve shaft 9 is connected to an external power source (the power source is a motor, hydraulic cylinder or air cylinder, which is based on existing technology);

[0023] When limiting: a group of fixed seats 3 are staggeredly installed on both sides of the valve body 1, a group of push plates 4 are movably hinged at the rear end of a group of fixed seats 3, a group of push-pull electromagnets 5 are hinged at the bottom in a group of fixed seats 3, and the push-pull ends are respectively hinged with the corresponding push plates 4, a group of guide sleeves 6 are installed on one side of a group of fixed seats 3, a group of limit rods 7 are movably inserted in a group of guide sleeves 6, a group of sealing sleeves 10 are staggered on both sides of the valve body 1, a group of limit rods 7 are movably inserted in the corresponding sealing sleeves 10, and a group of sealing sleeves 10 are staggered on both sides of the valve body 1, and a group of sealing sleeves 10 are staggered on both sides of the valve body 1. An O-ring 11 is installed in the sleeve 10, a group of limit rods 7 are respectively provided with grooves 12 at the rear end, a group of push plates 4 are respectively movably connected to the corresponding grooves 12, a group of fixed seats 3 are respectively provided with strip holes 13 corresponding to the push plates 4, a group of limit rods 7 are respectively provided with limit rings 14, a return spring 15 is connected between the limit ring 14 and the guide sleeve 6, and the return spring 15 is sleeved on the limit rod 7, and a group of limit seats 16 corresponding to the limit rod 7 are staggeredly installed on the valve plate 2. Figure 2 and Figure 3 As shown;

[0024] When the valve shaft 9 rotates forward to drive the valve plate 2 to close, a set of push-pull electromagnets 5 push-pull ends extend, and through the push plate 4, the front end of the limit rod 7 is inserted into the limit seat 16 of the valve plate 2. At this time, the return spring 15 is in a compressed state. Figure 1 As shown, further limiting of the valve plate 2 in addition to the power source is achieved, thereby avoiding the fluid pressure generated at the moment when the valve plate 2 cuts off the fluid flow, improving the sealing performance of the valve plate 2, and adopting a group of push-pull electromagnets 5 for driving, which has a faster response, and the mechanical structure has higher limiting stability and service life. The sealing sleeve 10 and the O-ring 11 can play a sealing guide role. When the valve plate 2 needs to be opened, the push-pull ends of a group of push-pull electromagnets 5 shrink, pulling the push plate 4 to deflect. At the same time, the reset spring 15 drives the limit rod 7 to retract and reset, and the valve shaft 9 reverses to drive the valve plate 2 to open. The interior of the valve body 1 is in a passage, and the fluid can be transported normally.

[0025] The above technical solutions only reflect the preferred technical solutions of the present utility model. Any changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the present utility model and fall within the scope of protection of the present utility model.

Claims

1. A ductile iron valve plate, comprising a valve body (1) and a valve plate (2) movably mounted in the valve body (1), characterized in that: A set of limiting mechanisms are staggeredly installed on both sides of the valve body (1); The limiting mechanism comprises a set of fixed seats (3), a set of push plates (4), a set of push-pull electromagnets (5), a set of guide sleeves (6) and a set of limiting rods (7), wherein the set of fixed seats (3) are staggeredly installed on both sides of the valve body (1), the rear ends of the set of push plates (4) are movably hinged in the set of fixed seats (3), the bottoms of the set of push-pull electromagnets (5) are hinged in the set of fixed seats (3), and the push-pull ends are respectively hinged to the corresponding push plates (4), the set of guide sleeves (6) are installed on one side of the set of fixed seats (3), and the set of limiting rods (7) are movably inserted in the set of guide sleeves (6).

2. A ductile iron valve plate according to claim 1, characterized in that: A sealing ring (8) is embedded in the outer edge of the valve plate (2), and a valve shaft (9) is installed at the center.

3. The ductile iron valve plate according to claim 1, characterized in that: A group of sealing sleeves (10) are staggeredly inlaid on both sides of the valve body (1), and the front ends of a group of limiting rods (7) are movably inserted into the corresponding sealing sleeves (10), and an O-ring (11) is installed in each of the sealing sleeves (10).

4. The ductile iron valve plate according to claim 1, characterized in that: A group of limiting rods (7) are respectively provided with grooves (12) at the rear ends, and a group of pushing plates (4) are respectively movably engaged in the corresponding grooves (12) at the front ends.

5. The ductile iron valve plate according to claim 1, characterized in that: A set of fixing seats (3) are respectively provided with strip-shaped holes (13) corresponding to the push plates (4).

6. The ductile iron valve plate according to claim 1, characterized in that: A set of limiting rods (7) are respectively mounted with limiting rings (14), a return spring (15) is connected between the limiting rings (14) and the guide sleeve (6), and the return spring (15) is sleeved on the limiting rods (7).

7. The ductile iron valve plate according to claim 1, characterized in that: A group of limiting seats (16) corresponding to the limiting rods (7) are staggeredly mounted on the valve plate (2).

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