Penetration type pneumatic ore pulp gate valve

Abstract

The utility model relates to the technical field of pipeline valves, in particular to a penetrating type pneumatic ore pulp gate valve which comprises a valve body, a gate plate and a pneumatic device, a channel for ore pulp to flow is transversely arranged on the valve body, the gate plate is vertically installed on the valve body in a sealing mode, the gate plate moves up and down in the valve body under the action of the pneumatic device, and a through hole is formed in the gate plate. When the through hole and the channel are concentric, the upper end of the flashboard is flush with the upper end of the valve body, and when the through hole and the channel are completely staggered, the lower end of the flashboard is flush with the lower end of the valve body. The penetrating type pneumatic ore pulp gate valve can prevent ore pulp from leaking and prevent relevant particle impurities and media in a container from being discharged. In the opening and closing process, due to the fact that the flashboard is tightly attached to the inner sealing face formed by the Yx sealing ring and the valve body and the flashboard is tightly attached to the upper sealing face and the lower sealing face formed by the polyurethane rectangular ring and the valve body, abrasion resistance, scouring resistance and leakage prevention are achieved, and the product sealing performance is durable and good.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline valve technical field, concretely relates to a kind of penetrating pneumatic ore pulp gate valves. BACKGROUND

[0002] In the industry such as ore pulp, coal, metallurgy, power plant and chemical industry, the valve control of fine particle material conveying pipeline is crucial.The traditional valve often faces the problems of impurity accumulation, insufficient sealing performance and slow response speed when controlling medium flow opening and closing.Especially in the medium containing a large amount of particle impurities such as ore pulp, the wear resistance, erosion resistance and sealing performance of the valve become the key factors affecting the service life and efficiency of the valve.

[0003] In the opening and closing process of the traditional gate valve, the gate plate often hinders the flow of medium, which is easy to produce vortex phenomenon, which not only reduces the sealing performance of the valve, but also may cause damage to the sealing surface, thereby causing medium leakage.In addition, due to the limitation of the design of the traditional valve, the gate plate is easy to form slag accumulation in the valve body cavity during opening and closing, which not only increases the risk of valve jamming, but also shortens the service life of the valve.

[0004] In addition, the control mode of the traditional valve is often not flexible enough, and the response speed is slow, which is difficult to meet the demand of modern industry for fast response and centralized control.Especially in the occasion where fluid medium needs to be quickly cut off, the performance of the traditional valve is often not satisfactory.

[0005] Therefore, in view of the above problems, a penetrating pneumatic ore pulp gate valve capable of avoiding impurity accumulation, improving sealing performance, enhancing wear resistance and erosion resistance, and having fast response capability is needed to meet the control demand of fine particle material conveying pipeline such as ore pulp. UTILITY MODEL CONTENTS

[0006] To solve the above problems, the utility model provides a kind of penetrating pneumatic ore pulp gate valve, the penetrating pneumatic ore pulp gate valve can prevent ore pulp leakage and related particle impurities and the discharge of medium in container;During opening and closing, the internal sealing surface formed by the gate plate, Yx sealing ring and valve body is tightly fitted, and the upper and lower sealing surfaces formed by the gate plate, polyurethane rectangular ring and valve body are tightly fitted, which is wear-resistant, erosion-resistant, leak-proof, and the sealing performance of the product is durable and good.

[0007] The technical scheme of the utility model is as follows:

[0008] The utility model provides a kind of penetrating pneumatic ore pulp gate valve, including valve body, gate and pneumatic device, channel for ore pulp flow is provided with in the transverse direction of valve body, gate is sealingly installed in the vertical direction of valve body, gate moves up and down in valve body under the action of pneumatic device, through hole is provided on gate, when through hole is concentric with channel, the upper end of gate is flush with the upper end of valve body, when through hole is completely misaligned with channel, the lower end of gate is flush with the lower end of valve body.

[0009] Pneumatic device includes valve rod, piston and cylinder, cylinder is fixed on valve body, one end of valve rod is fixedly connected with the top of gate, the other end of valve rod is sealingly connected with piston arranged in cylinder by passing through cylinder.

[0010] Cylinder is fixedly connected on the top of valve body by support.

[0011] Rectangular recess is provided on the top and bottom of valve body, rectangular sealing ring is installed in rectangular recess and slidingly sealed with gate, and rectangular sealing ring is compressed on valve body by gland.

[0012] The material of rectangular sealing ring is polyurethane.

[0013] Sealing groove is provided on the outside of channel, Yx sealing ring is installed in sealing groove, and the two sides of Yx sealing ring are respectively attached to the inner wall of sealing groove and the plane of gate.

[0014] The inner wall of valve body and the surface of gate are coated with tungsten carbide wear-resistant layer.

[0015] The thickness of tungsten carbide wear-resistant layer is 0.2-0.5mm.

[0016] Disc spring set is arranged between gland and valve body, the wear amount of rectangular sealing ring is compensated by pre-tightening force, and long-term sealing reliability is ensured.

[0017] The edge of through hole of gate is designed as 45° chamfer, and the chamfer width is 1 / 10 of the diameter of through hole, which is used for guiding ore pulp flow and reducing the impact of local turbulent flow on sealing surface.

[0018] The utility model has the advantages that:

[0019] 1、The utility model discloses a kind of penetrating pneumatic ore pulp gate valve, the penetrating pneumatic ore pulp gate valve prevents ore pulp leakage and related particle impurities and the discharge of medium in container;During opening and closing, because the internal sealing surface formed by gate, Yx sealing ring and valve body is closely attached, the upper and lower sealing surface formed by gate, polyurethane rectangular ring and valve body is closely attached, it is wear-resistant, anti-erosion, leakproof, and product sealing performance is durable and good.

[0020] 2, the utility model discloses a kind of penetrating pneumatic ore pulp gate valves, the penetrating pneumatic ore pulp gate valve Yx sealing ring has good integrity, elasticity, plasticity and super wear resistance, using polyether type wear-resistant material, performance is more reliable, service life is long;It is suitable for use in the occasion such as nominal diameter is 1200mm below, conveying ore pulp.

[0021] 3, the utility model discloses a kind of penetrating pneumatic ore pulp gate valves, the penetrating pneumatic ore pulp gate valve polyurethane rectangular ring has good integrity, elasticity, plasticity and super wear resistance, performance is more reliable, service life is long.

[0022] 4, the utility model discloses a kind of penetrating pneumatic ore pulp gate valves, the penetrating pneumatic ore pulp gate valve body and Yx sealing ring have sealing groove in the cavity around upper and lower of switch, slag can be directly guided by channel in switch process without accumulation, so that Yx sealing ring, valve body and penetrating gate between have the whole slag guiding effect, make the valve operation process more smooth without jam.

[0023] 5, the utility model discloses a kind of penetrating pneumatic ore pulp gate valves, the penetrating pneumatic ore pulp gate valve stem surface is smooth, will not appear jam situation in the process of opening and closing.

[0024] 6, the utility model discloses a kind of penetrating pneumatic ore pulp gate valves, the penetrating pneumatic ore pulp gate valve is convenient for centralized control, and it is convenient for on-site management. DRAWINGS

[0025] The scheme and advantages of the present application will become clear to those skilled in the art from the following detailed description of the preferred embodiments. The drawings are merely intended to illustrate the preferred embodiments and are not considered as limiting the present utility model.

[0026] In the drawings:

[0027] Figure 1 It is the cross section schematic view of a kind of penetrating pneumatic ore pulp gate valve of the utility model embodiment;

[0028] Figure 2 It is Figure 1 Lateral view;

[0029] Figure 3 It is the structure schematic view of the gate of a kind of penetrating pneumatic ore pulp gate valve of the utility model embodiment;

[0030] Components represented by each reference numeral in the drawing are:

[0031] The utility model: 1, valve body, 2, Yx sealing ring, 3, gate, 4, rectangular sealing ring, 5, gland, 6, support, 7, valve stem, 8, piston, 9, cylinder. DETAILED DESCRIPTION

[0032] As shown in Figure 1 and Figure 2 , the penetrating pneumatic ore pulp gate valve includes valve body 1, gate plate 3, pneumatic device, rectangular sealing ring 4, Yx sealing ring 2 and other components.

[0033] The valve body 1 is provided with a channel for the flow of ore pulp. The gate plate 3 moves up and down in the valve body 1 under the action of the pneumatic device, realizing the opening and closing of the valve. The rectangular sealing ring 4 is installed at the top and bottom of the valve body 1, forming a sliding seal with the gate plate 3. The Yx sealing ring 2 is installed in the sealing groove of the valve body 1, tightly adhering to the plane of the gate plate 3 to form a sealing pair.

[0034] The valve body 1 is provided with a transverse channel for the flow of ore pulp. The gate plate 3 is vertically and sealingly installed in the valve body 1 and moves up and down in the valve body 1 under the action of the pneumatic device. The top and bottom of the valve body 1 are provided with rectangular grooves for installing the rectangular sealing ring 4. In addition, the inner wall of the valve body 1 and the surface of the gate plate 3 are coated with a tungsten carbide wear-resistant layer to improve the wear resistance of the valve.

[0035] As shown in Figure 3 , the gate plate 3 is provided with a through hole. When the through hole is concentric with the channel of the valve body 1, the gate plate 3 is in an open state; when the through hole is completely misaligned with the channel, the gate plate 3 is in a closed state. The edge of the through hole of the gate plate 3 is designed with a 45° chamfer, and the chamfer width is 1 / 10 of the diameter of the through hole, to optimize the flow performance of the medium.

[0036] The pneumatic device includes valve stem 7, piston 8 and cylinder 9. The cylinder 9 is fixedly connected to the top of the valve body 1 through the support 6, one end of the valve stem 7 is fixedly connected to the top of the gate plate 3, and the other end is sealingly connected to the piston 8 arranged in the cylinder 9. When gas enters the cylinder 9, it pushes the piston 8 to move up and down, thereby driving the valve stem 7 and the gate plate 3 to move up and down, realizing the opening and closing of the valve.

[0037] The rectangular sealing ring 4 is installed in the rectangular groove at the top and bottom of the valve body 1, forming a sliding seal with the gate plate 3. The rectangular sealing ring 4 is pressed against the valve body 1 by the gland 5, and a disc spring set can be provided between the gland 5 and the valve body 1 to enhance the sealing effect. The material of the rectangular sealing ring 4 is polyurethane, which has good elasticity, wear resistance and sealing performance.

[0038] The Yx sealing ring 2 is installed in the sealing groove of the valve body 1 and tightly adheres to the plane of the gate plate 3. One side of the Yx sealing ring 2 is in close contact with the inner wall of the valve body, and the other side is in close contact with the plane of the gate plate. Under the pressure inside the valve cavity, the Yx sealing ring 2 is more tightly adhered to both sides, improving the stability of the seal. The material of the Yx sealing ring 2 is polyether type wear-resistant material, which has good integrity, elasticity and wear resistance.

[0039] The working principle of the penetrating pneumatic ore pulp gate valve is as follows:

[0040] Opening process: when the valve needs to be opened, the gas enters the cylinder body 9 above the pneumatic device, and pushes the piston 8 to move downward. The piston 8 drives the valve rod 7 and the gate plate 3 to move downward, so that the through hole of the gate plate 3 is coaxial with the passage of the valve body 1, and the full opening state is realized. At this time, the lower end of the gate plate 3 is exposed from the lower end of the valve body 1, and the valve is in the opening state.

[0041] Closing process: when the valve needs to be closed, the gas enters the cylinder body 9 below the pneumatic device, and pushes the piston 8 to move upward. The piston 8 drives the valve rod 7 and the gate plate 3 to move upward, so that the passages at both ends of the valve body 1 are closed, and the full closing state is realized. At this time, the upper end of the gate plate 3 is exposed from the upper end of the valve body 1, and the valve is in the closing state.

[0042] In the opening and closing process, the internal sealing surface formed by the pneumatic device, the Yx sealing ring 2 and the valve body 1 is tightly fitted, and the upper and lower sealing surfaces formed by the pneumatic device, the rectangular sealing ring 4 and the valve body 1 are also tightly fitted, so as to ensure the good sealing performance of the valve.

[0043] The penetrating pneumatic ore pulp gate valve has the following advantages:

[0044] Good sealing performance: the double sealing structure of the Yx sealing ring 2 and the rectangular sealing ring 4 ensures the good sealing performance of the valve. The Yx sealing ring 2 is made of polyether wear-resistant material, which has good elasticity, wear resistance and sealing stability; the rectangular sealing ring 4 is pressed on the valve body 1 by the gland 5, which enhances the sealing effect.

[0045] Good slag guiding effect: the lower end of the valve body 1 is not blocked, and the impurities in the ore pulp flow out through the gate plate 3 passage at the same time as the opening and closing of the gate plate 3, which can effectively reduce the generation of slag accumulation. At the same time, the sealing groove in the cavity of the valve body 1 cooperates with the Yx sealing ring 2 to form a seal, which further improves the slag guiding effect.

[0046] Strong wear resistance: the inner wall of the valve body 1 and the surface of the gate plate 3 are coated with a tungsten carbide wear-resistant layer, and the thickness of the tungsten carbide wear-resistant layer is 0.2-0.5mm, which improves the wear resistance and service life of the valve.

[0047] Convenient for centralized control: the pneumatic device is used to control the opening and closing of the valve, which is convenient for centralized control and management on site. At the same time, the pneumatic device can be remotely driven, which improves the safety and convenience of operation.

[0048] Fast response: since the opening and closing of the pneumatic control valve, the present application can be applied to the scene of fast response, and the flow of fluid in the pipeline can be quickly controlled through the valve.

[0049] Visual intuitive judgment: the gate plate 3 exposes the lower end and the upper end of the valve body 1 in the fully open and fully closed states, respectively, so that the opening or closing state of the valve can be intuitively judged.

Claims

1. A penetrating pneumatic slurry gate valve, characterized in that, The valve includes a valve body (1), a gate (3), and a pneumatic device. A channel for the flow of slurry is provided in the transverse direction of the valve body (1). A gate (3) is installed vertically and sealed in the valve body (1). The gate (3) moves up and down in the valve body (1) under the action of the pneumatic device. A through hole is provided on the gate (3). When the through hole is concentric with the channel, the upper end of the gate (3) is flush with the upper end of the valve body (1). When the through hole is completely misaligned with the channel, the lower end of the gate (3) is flush with the lower end of the valve body (1).

2. A penetrating pneumatic slurry gate valve according to claim 1, characterized in that, The pneumatic device includes a valve stem (7), a piston (8) and a cylinder (9). The cylinder (9) is fixed on the valve body (1). One end of the valve stem (7) is fixedly connected to the top of the gate (3), and the other end of the valve stem (7) passes through the cylinder (9) in a sealed manner and is fixedly connected to the piston (8) located in the cylinder (9).

3. A penetrating pneumatic slurry gate valve according to claim 2, characterized in that, The cylinder (9) is fixedly connected to the top of the valve body (1) by a bracket (6).

4. A through-type pneumatic slurry gate valve according to claim 1, characterized in that, A rectangular groove is provided at the top and bottom of the valve body (1), and a rectangular sealing ring (4) is installed in the rectangular groove to slide and seal with the gate (3). The rectangular sealing ring (4) is pressed onto the valve body (1) by the gland (5).

5. A penetrating pneumatic slurry gate valve according to claim 4, characterized in that, The rectangular sealing ring (4) is made of polyurethane.

6. A penetrating pneumatic slurry gate valve according to claim 1, characterized in that, A sealing groove is provided on the outside of the channel, and a Yx sealing ring (2) is installed in the sealing groove. The two sides of the Yx sealing ring (2) are respectively attached to the inner wall of the sealing groove and the plane of the gate (3).

7. A penetrating pneumatic slurry gate valve according to claim 1, characterized in that, The inner wall of the valve body (1) and the surface of the gate (3) are coated with a tungsten carbide wear-resistant layer.

8. A penetrating pneumatic slurry gate valve according to claim 7, characterized in that, The thickness of the tungsten carbide wear-resistant layer is 0.2-0.5 mm.

9. A penetrating pneumatic slurry gate valve according to claim 4, characterized in that, A disc spring assembly is provided between the pressure cap (5) and the valve body (1).

10. A penetrating pneumatic slurry gate valve according to claim 1, characterized in that, The edge of the through hole of the gate (3) is designed with a 45° chamfer, and the chamfer width is 1 / 10 of the diameter of the through hole.

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