Valve plate

Abstract

The utility model relates to the technical field of valve plates, and discloses a valve plate which comprises two gate plates, the plate surfaces of the two gate plates are oppositely arranged in parallel, a first gap is formed between the plate surfaces of the two gate plates, and a rotating groove is formed in the first gap in the direction perpendicular to the depth direction of the first gap. The rotating shaft is rotationally mounted in the rotating groove, and the gate plate is suitable for rotating around the rotating shaft when being subjected to pressure. The flashboard can rotate around the rotating shaft, the position of the flashboard can be flexibly adjusted when the flashboard is stressed, the sealing problem caused by uneven local stress is effectively avoided, a complex welding process is not needed to guarantee sealing, sealing hidden dangers caused by insufficient machining precision are reduced, the sealing performance and reliability of the valve plate are greatly improved, and the service life of the valve is prolonged. And the structure is relatively simple, and the manufacturing cost and the maintenance difficulty are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of valve plate, and specifically relates to a valve plate. BACKGROUND

[0002] As a key component of the valve, the core function of the valve plate is to realize the full opening and closing operation of the valve. For the gate plate, it is necessary to ensure that sufficient sealing specific pressure is provided to ensure the sealing effect of the valve and prevent leakage caused by excessive deformation.

[0003] The gate plate mainly has two types of integral forging type and forged and welded type. The forged and welded type valve plate is a valve component formed by separately forging each part and then combining through welding, and the sealing performance thereof depends largely on the welding quality. Once defects such as pores and cracks occur in the weld, the flatness of the sealing surface will be inevitably damaged, thereby affecting the sealing effect. The integral forged elastic gate plate is made by processing a rectangular blank through multiple processes, and this process has the problems of excessive machining allowance and low casting precision.

[0004] In the prior art, although there is an assembled valve plate, which is assembled by connecting members on both sides of the valve plate, if the sealing performance decreases during use, the valve plate can be disassembled and the sealing surface of one side can be reprocessed through processes such as surfacing, machining and grinding. However, this method has many disadvantages, such as complex process and high cost. More importantly, the repair process will change the performance of the gate plate, such as the downward movement of the gate plate closing position, which will reduce the contact width of the sealing surface and cannot ensure the sealing specific pressure, thereby affecting the overall sealing performance and service life of the valve. UTILITY MODEL CONTENTS

[0005] The utility model provides a valve plate to solve the problem that the sealing performance of the valve plate in the prior art changes after repair.

[0006] The utility model provides a valve plate, which comprises:

[0007] Two gate plates, the plate surfaces of the two gate plates are arranged in parallel, a first gap is formed between the plate surfaces of the two gate plates, and a rotating groove is arranged in the first gap in a direction perpendicular to the depth of the first gap;

[0008] A rotating shaft is rotatably installed in the rotating groove, and the gate plate is adapted to rotate around the rotating shaft when subjected to pressure.

[0009] Optionally, a locking structure is further arranged in the first gap, and the locking structure is adapted to limit the displacement of the gate plate rotating around the rotating shaft.

[0010] Optionally, the locking structure comprises two U-shaped members arranged in a central symmetry, one side arm of each of the two U-shaped members is parallel to the plate surface of the gate plate and is fixedly arranged on the plate surface of the gate plate near the first gap, the other side arm of each of the two U-shaped members is a clamping arm, and a clamping groove is formed between the two side arms of each of the two U-shaped members; when the clamping arm of one of the two U-shaped members is clamped in the clamping groove of the other of the two U-shaped members arranged oppositely, a second gap is further formed between the clamping groove and the clamping arm, and the second gap is adapted to limit the displacement of the gate plate rotating around the rotating shaft.

[0011] Optionally, the rotating shaft is arranged at the middle of the first gap in the depth direction.

[0012] Optionally, the two locking structures are arranged in sequence along the depth direction of the first gap and are arranged on the two sides of the rotating shaft, respectively.

[0013] Optionally, the rotating groove comprises two grooves arranged on the opposite plate surfaces of the two gate plates, respectively; and the rotating shaft has two convex surfaces arranged oppositely, and the convex surfaces are clamped in the grooves to realize the rotation of the gate plates around the rotating shaft.

[0014] Advantages

[0015] The valve plate provided by the utility model comprises two gate plates, the plate surfaces of the two gate plates are arranged in parallel, a first gap is formed between the plate surfaces of the two gate plates, a rotating groove is arranged in the first gap and arranged in the depth direction perpendicular to the first gap, a rotating shaft is rotatably arranged in the rotating groove, and the gate plates are adapted to rotate around the rotating shaft when subjected to pressure.

[0016] The valve plate provided by the utility model comprises two gate plates, the plate surfaces of the two gate plates are arranged in parallel, a first gap is formed between the plate surfaces of the two gate plates, a rotating groove is arranged in the first gap and arranged in the depth direction perpendicular to the first gap, a rotating shaft is rotatably arranged in the rotating groove, and the gate plates are adapted to rotate around the rotating shaft when subjected to pressure. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the specific embodiment of the utility model or the prior art, the drawings needed in the specific embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to the drawings without any creative labor.

[0018] Figure 1 A valve plate cross section schematic view of the utility model embodiment;

[0019] Mark explanation:

[0020] 1, gate; 2, rotating shaft; 3, U-shaped piece; 4, valve body; 5, valve seat; 6, valve rod. Specific implementation

[0021] To make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] The embodiments of the utility model will be described below in conjunction with Figure 1 .

[0023] According to the embodiments of the utility model, a valve plate is provided, comprising:

[0024] Two gate plates 1, the plate surfaces of the two gate plates 1 are oppositely parallel, a first gap is formed between the plate surfaces of the two gate plates 1, and a rotating groove is arranged in the first gap along the depth direction perpendicular to the first gap;

[0025] Rotating shaft 2, the rotating shaft 2 is rotatably installed in the rotating groove, and the gate plate 1 is adapted to rotate around the rotating shaft 2 when subjected to pressure.

[0026] It should be noted that the depth direction of the first gap refers to Figure 1 The direction from top to bottom in the drawing.

[0027] The valve plate provided in the embodiments adopts the structure of two oppositely parallel gate plates 1 forming a first gap between the plate surfaces and being provided with a rotating shaft 2. The gate plate 1 can rotate around the rotating shaft 2 and can flexibly adjust the position when subjected to pressure, effectively avoiding the sealing problem caused by uneven local stress, without the need for complex welding process to ensure sealing, reducing the sealing hidden danger caused by insufficient machining precision, greatly improving the sealing performance and reliability of the valve plate, prolonging the service life of the valve, and the structure is relatively simple, reducing the manufacturing cost and maintenance difficulty.

[0028] Further, it further comprises a locking structure, the locking structure is arranged in the first gap, and the locking structure is adapted to limit the displacement amount of the gate plate 1 rotating around the rotating shaft 2.

[0029] It should be noted that the locking structure can accurately limit the rotation range of the gate plate 1 around the rotation shaft 2 and the lateral displacement of the gate plate. With the locking structure, the valve plate can be flexibly adjusted to ensure the sealing effect when responding to pressure changes, while maintaining a stable positional relationship in a specific working state, effectively improving the stability of the valve operation, the accuracy of the control, and preventing sealing failure, jamming and other failures caused by excessive rotation of the gate plate 1.

[0030] Further, the locking structure includes two U-shaped members 3 arranged symmetrically about the center, one side arm of each U-shaped member 3 being parallel to the plate surface of the gate plate 1 and being fixedly arranged on the plate surface of one gate plate 1 near the first gap side, the other side arm of the U-shaped member 3 being a clamping arm, and a clamping groove being formed between the two side arms. When the clamping arm of one U-shaped member 3 is clamped in the clamping groove of the other U-shaped member 3 arranged oppositely, a second gap exists between the clamping groove and the clamping arm, and the second gap is suitable for limiting the displacement amount of the gate plate 1 rotating around the rotation shaft 2.

[0031] It should be noted that the two U-shaped members arranged symmetrically about the center are fixed to the plate surface of the gate plate 1, and the connection mode and the second gap formed thereby can accurately limit the rotation displacement amount of the gate plate 1 around the rotation shaft 2. During valve operation, the gate plate 1 is rotated around the rotation shaft 2 under the action of various forces, and this structure can ensure that the rotation amplitude of the gate plate 1 is within a predetermined range, avoiding damage to the sealing performance of the valve or affecting the normal opening and closing function due to excessive rotation, effectively maintaining the stability and reliability of the valve during operation, and ensuring the stable operation of the entire valve system, so that it can adapt to pressure changes and working requirements under different working conditions.

[0032] In an alternative embodiment, an elastic limiting device can be used as the locking structure. Elastic stoppers made of elastic materials such as rubber or spring steel can be arranged at both ends of the rotation groove. When the gate plate 1 rotates to contact the stoppers, the stoppers will elastically deform according to the pressure applied by the rotation of the gate plate 1, thereby limiting the further rotation of the gate plate 1. This elastic limiting method has the characteristics of buffering the rotation impact force, which can reduce the wear caused by rigid collision between the gate plate 1 and the rotation shaft 2, and is beneficial to prolong the service life of the valve plate. Moreover, in special working environments where pressure fluctuates frequently or there is slight impact, the elastic stoppers can well adapt to dynamic changes and continuously and effectively control the rotation displacement amount of the gate plate 1.

[0033] Further, the rotation shaft 2 is arranged at the middle of the first gap in the depth direction.

[0034] It is easy to understand that the shaft 2 is arranged at the middle of the first gap in the depth direction, which helps to make the force more uniform when the gate 1 is rotating under stress. The uniform stress characteristic can reduce the risk of deformation of the gate 1 due to excessive local stress, thereby better maintaining the shape accuracy of the gate 1, ensuring the flatness and integrity of the valve sealing surface. In the process of frequent opening and closing of the valve and bearing different pressure, the sealing performance of the valve can be effectively improved and the service life can be prolonged, ensuring that the valve can stably and reliably operate under various working conditions, which plays a key role in maintaining the stable control of fluid in the industrial pipeline system.

[0035] In an alternative embodiment, the shaft 2 can be arranged near one side edge of the gate 1. This arrangement can enable the gate 1 to achieve effective adaptation to pressure and ensure the sealing function with a smaller rotation range under certain working conditions, for example, when the fluid pressure mainly acts on a certain side area of the gate 1. By reducing the rotation range of the gate 1, the component wear and energy loss caused by rotation are reduced, and in some space-limited installation environments, this layout can optimize the overall space occupation of the valve plate, which is conducive to the installation and use of the valve in special scenarios.

[0036] Further, the locking structure is two, and the two locking structures are arranged in sequence along the depth direction of the first gap and are arranged on both sides of the shaft 2.

[0037] It is easy to understand that the arrangement of two locking structures along the depth direction of the first gap and on both sides of the shaft 2 can effectively limit and accurately control the rotation of the gate 1 from multiple dimensions. During valve operation, the double-sided locking structures can work cooperatively to avoid excessive rotation or deviation of the gate 1 caused by unbalanced stress in a single direction or a local area. Further, the sealing performance of the valve is ensured, the risk of leakage caused by unstable position of the gate 1 is reduced, and the safety and durability of the overall operation of the valve are improved.

[0038] Further, the rotating groove includes two grooves arranged on the opposite surfaces of the two gates 1 respectively; the shaft 2 has two convex surfaces arranged apart, and the convex surfaces are clamped in the grooves to realize the rotation of the gate 1 around the shaft 2.

[0039] It is easy to understand that the clamping of the grooves and the convex surfaces effectively limits unnecessary displacement of the gate 1 in other directions, so that the gate 1 can only move on the predetermined rotation path, thereby accurately realizing the function of adjusting the position according to the pressure change to ensure the sealing. In the long-term operation process, this close and directional matching mode can reduce the wear caused by shaking or misalignment of the gate 1, which helps to maintain the integrity of the overall structure of the valve plate, thereby ensuring the durability of the sealing performance of the valve and reducing the risk of sealing failure caused by structural looseness or deformation.

[0040] In detail, a valve provided with the valve plate is specifically described here, which comprises:

[0041] The valve plate as in any one of the preceding items;

[0042] The valve body 4, wherein the valve plate is installed in the valve body 4.

[0043] Further, the valve seat 5 is also included, which is installed on the gate plate 1.

[0044] As can be easily understood, the valve seat 5 cooperates with the gate plate 1 and directly participates in the sealing process of the valve. The valve seat 5 is usually a truncated cone with a large upper part and a small lower part. The sealing surface of the valve seat 5 needs to have good flatness, hardness and corrosion resistance to ensure that it can maintain stable and reliable sealing performance when in long-term contact with fluid media in the pipeline system and frequently subjected to the opening and closing pressure of the gate plate 1.

[0045] The material selection and manufacturing process precision of the valve seat 5 directly affect the sealing effect and service life of the valve. For example, metal materials can be used and subjected to precision machining and surface treatment, or special engineering plastic materials can be selected to adapt to specific fluid media and working conditions, thereby effectively preventing fluid leakage and ensuring the safety and stability of fluid transportation in the industrial pipeline system.

[0046] Further, the fluid passage is formed between the valve seat 5 and the valve body 4.

[0047] It should be noted that the fluid passage between the valve seat 5 and the valve body 4 is an important way for fluid transmission in the valve. Its shape, size and inner wall smoothness affect the fluid flow characteristics. It needs to be reasonably designed to ensure smooth transmission, reduce pressure loss and turbulence, and improve transportation efficiency. The direction of the fluid in the fluid passage is perpendicular to the axial direction of the valve seat 5.

[0048] Further, the valve stem 6 is also included, which is fixedly connected with the valve plate, and the valve stem 6 is suitable for opening and closing the valve plate under the action of external force.

[0049] As can be easily understood, after the valve stem 6 is fixedly connected with the valve plate, it is the direct executor of the opening and closing action of the valve plate. In this embodiment, the opening and closing is realized by moving the valve plate along the axial direction of the valve stem 6. When subjected to external force, the valve stem 6 transmits the external force to the valve plate, so that it performs the opening or closing operation according to the predetermined trajectory.

[0050] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A valve plate, characterized by The utility model relates to a gate valve, comprising: two gate plates (1), the plate surfaces of the two gate plates (1) are arranged oppositely and in parallel, a first gap is formed between the plate surfaces of the two gate plates (1), and a rotating groove is arranged in the first gap along a depth direction perpendicular to the first gap; a rotating shaft (2) is rotatably installed in the rotating groove, and the gate plate (1) is adapted to rotate around the rotating shaft (2) when subjected to pressure.

2. Valve plate according to claim 1, characterized in that The utility model further comprises a locking structure arranged in the first gap, and the locking structure is adapted to limit the displacement of the gate plate (1) rotating around the rotating shaft (2).

3. Valve plate according to claim 2, characterized in that The locking structure comprises two U-shaped members (3) arranged in a central symmetry, one side arm of each of the two U-shaped members (3) is parallel to the plate surface of the gate plate (1) and is fixedly arranged on the plate surface of the gate plate (1) close to the first gap, the other side arm of the U-shaped member (3) is a clamping arm, and a clamping groove is formed between the two side arms of the U-shaped member (3); when the clamping arm of one U-shaped member (3) is clamped in the clamping groove of the other U-shaped member (3) arranged oppositely, a second gap is further formed between the clamping groove and the clamping arm, and the second gap is adapted to limit the displacement of the gate plate (1) rotating around the rotating shaft (2).

4. Valve plate according to claim 3, characterized in that The rotating shaft (2) is arranged in the middle of the first gap along the depth direction.

5. Valve plate according to claim 4, characterized in that The two locking structures are sequentially arranged along the depth direction of the first gap and are respectively arranged on the two sides of the rotating shaft (2).

6. Valve plate according to any of claims 1-5, characterized in that The rotating groove comprises two recesses arranged on the opposite plate surfaces of the two gate plates (1), respectively; the rotating shaft (2) has two convex surfaces arranged apart from each other, and the convex surfaces are clamped in the recesses to realize the rotation of the gate plate (1) around the rotating shaft (2).

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