Rising stem gate valve with anti-erosion sealing surface

Abstract

The rising stem gate valve comprises a valve body, a valve plate is rotationally connected into the valve body, a valve seat for controlling the valve plate to rotate is arranged at the top end of the valve body, a flow inlet is formed in one end of the valve body, and a flow outlet is formed in the other end of the valve body. A flow outlet is formed in the side, opposite to the flow inlet, of one end of the valve body. A medium enters the valve body through the flow inlet, and when the medium enters the valve body, impurities and fine particles in the medium can be blocked through the filter screen plate in the mounting disc in the valve body, so that the condition that the sealing surface at one end of the valve plate is eroded and damaged by the impurities is reduced, and the service life of the valve plate is prolonged. The service life of the sealing face of the valve plate is prolonged, meanwhile, the impact force generated by media on the mounting disc can be reduced through the damping springs in the sliding grooves, the impact force borne by the mounting disc can be reduced through the rubber cushion blocks in the sliding grooves, and the service life of the mounting disc is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the clear rod gate valve, and specifically relates to a clear rod gate valve with erosion-proof sealing surface. BACKGROUND

[0002] The clear rod gate valve is used for controlling the opening and closing of the valve by lifting the gate plate, when the hand wheel is rotated clockwise or the valve rod is moved downward through the driving device, the gate plate is lowered, until the sealing surface of the gate plate is tightly attached to the valve seat, the fluid passage is cut off, and the valve is closed; conversely, the hand wheel is rotated counterclockwise or the valve rod is moved upward through the driving device, the gate plate is lifted, the fluid passage is gradually opened, and the valve is opened, during the opening or closing of the valve, the relative movement between the gate plate and the valve seat is relatively stable, and the flow and on-off of the fluid can be effectively controlled.

[0003] The clear rod gate valve is structurally solid, the material of the gate plate and the valve seat usually has high wear resistance and corrosion resistance, and the clear rod gate valve can maintain good performance in long-term use, when the clear rod gate valve is used, the medium has impurities or some small particles, the impurities and particles can damage the sealing surface of the valve plate when passing through the inside of the valve, and affect the sealing performance of the valve and the service life of the sealing surface. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a clear rod gate valve with erosion-proof sealing surface, which can solve the problem of the clear rod gate valve being structurally solid, the material of the gate plate and the valve seat usually having high wear resistance and corrosion resistance, and the clear rod gate valve being able to maintain good performance in long-term use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a clear rod gate valve with erosion-proof sealing surface, which comprises a valve body, a valve plate slidably connected inside the valve body, a valve seat arranged at the top end of the valve body for controlling the rotation of the valve plate, a flow inlet formed at one end of the valve body, a flow outlet formed at the side of the valve body opposite to the flow inlet, a filter assembly arranged inside the valve body and close to the flow inlet for reducing the erosion of the sealing surface, the filter assembly comprising a mounting disc arranged inside the valve body and a filter screen plate fixedly connected to the inside of the mounting disc for filtering impurities in the flow, a sliding groove formed in the inside of the valve body for the sliding of the mounting disc, sliding blocks uniformly and circumferentially formed around the outside of the mounting disc and slidably matched with the sliding groove, and a damping spring fixedly installed at one end of the sliding block and inside the sliding groove.

[0006] As a further scheme of the utility model: the rubber pad that reduces flow impact force is fixedly installed on the opposite side of the damping spring inside the sliding groove.

[0007] As a further scheme of the utility model: the installation assembly that facilitates disassembly filter screen plate is arranged in the installation disc, the installation assembly includes the sliding groove that is evenly surrounded and is opened in the inner side of the installation disc, the limiting block that slides in the sliding groove and the limiting groove that is evenly surrounded and is opened in the outer periphery of the filter screen plate and is matched with the limiting block.

[0008] As a further scheme of the utility model: the reset spring that is used for the reset of limiting block is fixedly installed in the sliding groove, and the reset spring is fixedly installed with the top of limiting block.

[0009] As a further scheme of the utility model: the rotating disc that drives limiting block is rotatably connected in the installation disc, the arc-shaped groove that is evenly and symmetrically opened in one end of the rotating disc, the connecting rod that is fixedly installed on the top of limiting block, and the connecting rod is fixedly installed with the connecting rod in the installation disc, and the connecting rod is matched with the arc-shaped groove.

[0010] As a further scheme of the utility model: the arc-shaped through groove is opened in one end of the installation disc, and the adjusting rod that is fixedly installed in one end of the rotating disc and penetrates the arc-shaped through groove.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] In the utility model, the medium enters the inside of the valve body through the flow inlet, when the medium enters the valve body, the filter screen plate in the installation disc inside the valve body can block the impurities and small particles in the medium, reduce the erosion damage of the impurities to the sealing surface of one end of the valve plate, increase the service life of the sealing surface of the valve plate, the damping spring in the sliding groove can reduce the impact force of the medium on the installation disc, and the rubber pad in the sliding groove can reduce the impact force of the installation disc, and increase the service life of the installation disc.

[0013] In the utility model, when the filter screen plate is blocked, the filter screen plate can be quickly replaced through the installation assembly, and the efficiency of replacing the filter screen plate is increased. ACCURACY OF DRAWINGS

[0014] Figure 1 It is the overall structure schematic diagram of the utility model;

[0015] Figure 2 It is the sectional structure schematic diagram of the valve body in the utility model;

[0016] Figure 3 It is the utility model Figure 2The local enlarged structure schematic view of A in the middle;

[0017] Figure 4 The expanded structure schematic view of the mounting disc and the filter screen plate in the utility model;

[0018] Figure 5 The cross-sectional structure schematic view of the mounting disc in the utility model;

[0019] Figure 6 The utility model Figure 5 The local enlarged structure schematic view of B in the middle.

[0020] In the figure: 1, valve body; 2, valve plate; 3, valve seat; 4, flow import; 5, flow export; 6, filter assembly; 61, mounting disc; 62, filter screen plate; 63, sliding groove; 64, sliding block; 65, damping spring; 66, rubber pad; 7, mounting assembly; 71, sliding slot; 72, limit block; 73, limit slot; 74, connecting rod; 75, rotating disc; 76, arc slot; 77, connecting rod; 78, reset spring; 79, arc through slot; 710, adjusting rod. DETAILED DESCRIPTION

[0021] The technical scheme in the utility model embodiments will be clearly and completely described below with reference to the drawings in the utility model embodiments. Obviously, the described embodiments are only 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 those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] In the description of the utility model, it is necessary to explain that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the indicated device or element to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the utility model, it is necessary to explain that, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. The embodiments of the utility model are described below according to the overall structure of the utility model.

[0023] Referring to Figures 1 to 6 In the utility model embodiment, a kind of clear rod gate valve of sealing surface anti-erosion, including valve body 1, valve plate 2 is slidably connected in valve body 1, and valve seat 3 for controlling the rotation of valve plate 2 is provided at the top of valve body 1, flow inlet 4 is opened in one end of valve body 1, and flow outlet 5 is opened in one end of valve body 1 and the side opposite to flow inlet 4, filter assembly 6 for reducing the erosion of sealing surface is arranged in the inside of valve body 1 and close to flow inlet 4 side, filter assembly 6 includes installation disc 61 arranged in the inside of valve body 1 and filter screen plate 62 for filtering impurities in flow and being fixedly connected in the inside of installation disc 61, sliding groove 63 for installation disc 61 to slide is opened in the inside of valve body 1, and sliding block 64 slidably matched with sliding groove 63 is uniformly opened around the periphery of installation disc 61, and damping spring 65 is fixedly installed in one end of sliding block 64 and is fixedly installed in the inside of sliding groove 63.

[0024] The above scheme is adopted: sliding block 64 is arranged in the middle of damping spring 65 and rubber pad 66, fluid enters the gate valve more smoothly by damping spring 65, impurities, particles and the like in fluid can be intercepted by filter assembly 6, to prevent them from entering the inside of valve body 1 with fluid, avoid erosion effect such as erosion and wear of sealing surface by impurities when fluid flows, reduce the risk of damage to sealing surface caused by impurity particles, prolong the service life of sealing surface.

[0025] Referring to Figures 1 to 6The rubber pad 66 is fixedly installed inside the sliding groove 63 and on the side opposite to the damping spring 65, and is used to reduce the impact force of the flow;

[0026] With the above scheme, the rubber pad 66 can reduce the impact force of the installation disc, and the rubber pad 66 is elastic and can absorb and buffer the pressure and impact force from the fluid to a certain extent.

[0027] With reference to Figures 1 to 6 The installation disc 61 is internally provided with an installation assembly 7 for facilitating disassembly of the filter screen plate 62. The installation assembly 7 comprises a sliding groove 71 uniformly arranged on the inner side of the installation disc 61, a limiting block 72 slidingly arranged in the sliding groove 71, and a limiting groove 73 uniformly arranged on the outer periphery of the filter screen plate 62 and matched with the limiting block 72. A reset spring 78 is fixedly installed in the sliding groove 71 and used to reset the limiting block 72. The reset spring 78 is fixedly installed at the top end of the limiting block 72. A rotating disc 75 is rotationally connected to the inside of the installation disc 61 and used to drive the limiting block 72. The rotating disc 75 is uniformly and symmetrically provided with an arc-shaped groove 76 at one end. A connecting rod 74 is fixedly installed at the top end of the limiting block 72. The connecting rod 74 is fixedly installed with a connecting rod 77 penetrating through the installation disc 61. The connecting rod 77 is matched with the arc-shaped groove 76. An arc-shaped through groove 79 is arranged at one end of the installation disc 61. An adjusting rod 710 is fixedly installed at one end of the rotating disc 75 and penetrating through the arc-shaped through groove 79.

[0028] With the above scheme, one end of the limiting block 72 and the side close to the flow inlet 4 are beveled. When the filter screen plate 62 is installed, the limiting groove 73 is aligned with the limiting block 72, and then the filter screen plate 62 is pressed. The filter screen plate 62 will extrude the limiting block 72 into the inside of the sliding groove 71. When the limiting groove 73 is pressed to be directly below the limiting block 72 by continuously pressing the filter screen plate 62, the limiting block 72 can be pushed into the limiting groove 73 by the reset spring 78 in the sliding groove 71 to complete the fixation. The connecting rod 74 is sleeved in the inside of the reset spring 78. When the filter screen plate 62 is blocked, the installation assembly 7 can quickly replace the filter screen plate 62, thereby increasing the efficiency of replacing the filter screen plate 62.

[0029] The working principle of this utility model is as follows: When using the valve body 1, the medium enters the interior of the valve body 1 through the flow inlet 4. When the medium enters the valve body 1, the filter screen 62 inside the mounting plate 61 inside the valve body 1 can block impurities and fine particles in the medium, reducing the corrosion and damage to the sealing surface of one end of the valve plate 2 caused by impurities, and increasing the service life of the sealing surface of the valve plate 2. At the same time, the damping spring 65 inside the sliding groove 63 can reduce the impact force of the medium on the mounting plate 61, and the rubber pad 66 inside the sliding groove 63 can reduce the impact force on the mounting plate 61, increasing the service life of the mounting plate 61. When the surface of the filter screen 62 is too impurities to be used normally, the operator only needs to adjust the adjustment rod 710. The filter plate 62 slides inside the arc-shaped groove 79, thereby driving the rotating disk 75 inside the mounting plate 61 to rotate. When the rotating disk 75 rotates, the connecting rod 74 can slide inside the sliding groove 71 through the arc-shaped groove 76 at one end of the rotating disk 75 and the connecting rod 77 at one end of the connecting rod 74. When the connecting rod 74 slides, it will drive the limiting block 72 to be pulled out from inside the limiting groove 73. At this time, the filter plate 62 can be quickly replaced. The installation component 7 can quickly replace the filter plate 62 when it is blocked, increasing the efficiency of filter plate 62 replacement. When the filter plate 62 needs to be installed, simply align the limiting groove 73 with the limiting block 72, and then push the filter plate 62 to quickly install and fix the filter plate 62.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rising stem gate valve with an erosion-resistant sealing surface, characterized in that, The valve body includes a valve body (1), a valve plate (2) is slidably connected inside the valve body (1), and a valve seat (3) is provided at the top of the valve body (1) to control the rotation of the valve plate (2). A flow inlet (4) is provided at one end of the valve body (1), and a flow outlet (5) is provided at one end of the valve body (1) opposite to the flow inlet (4). A filter assembly (6) is provided inside the valve body (1) near the flow inlet (4) to reduce erosion of the sealing surface. The valve body (1) includes a mounting plate (61) disposed inside the valve body (1) and a filter screen plate (62) that is snapped and fixed inside the mounting plate (61) to filter impurities in the flow. The valve body (1) has a sliding groove (63) for the mounting plate (61) to slide. The mounting plate (61) is evenly surrounded by sliding blocks (64) that are adapted to slide in the sliding groove (63). A damping spring (65) that is fixedly installed inside the sliding groove (63) is fixedly installed at one end of the sliding block (64).

2. The rising stem gate valve with erosion-resistant sealing surface according to claim 1, characterized in that, A rubber pad (66) for reducing the impact force of the flow is fixedly installed inside the sliding groove (63) and on the side opposite to the damping spring (65).

3. A rising stem gate valve with erosion-resistant sealing surface according to claim 1, characterized in that, The mounting plate (61) is provided with a mounting assembly (7) for easy disassembly of the filter screen (62). The mounting assembly (7) includes a sliding groove (71) uniformly surrounding the inner side of the mounting plate (61), a limiting block (72) sliding inside the sliding groove (71), and a limiting groove (73) uniformly surrounding the outer periphery of the filter screen (62) and adapted to the limiting block (72).

4. A rising stem gate valve with erosion-resistant sealing surface according to claim 3, characterized in that, The slide (71) is fixedly installed with a reset spring (78) for resetting the limit block (72), and the reset spring (78) is fixedly installed with the top end of the limit block (72).

5. A rising stem gate valve with erosion-resistant sealing surface according to claim 3, characterized in that, The mounting plate (61) is rotatably connected to a rotating plate (75) that drives the limiting block (72). One end of the rotating plate (75) is evenly and symmetrically provided with arc-shaped grooves (76). A connecting rod (74) is fixedly installed at the top of the limiting block (72), and the connecting rod (74) passes through the mounting plate (61) and is fixedly installed with a connecting rod (77). The connecting rod (77) is adapted to the arc-shaped groove (76).

6. A rising stem gate valve with erosion-resistant sealing surface according to claim 5, characterized in that, The mounting plate (61) has an arc-shaped through groove (79) at one end, and the rotating plate (75) has an adjusting rod (710) that passes through the arc-shaped through groove (79) fixedly installed at one end.

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