Pneumatic penetrating type ore pulp valve

Abstract

The utility model discloses a pneumatic penetrating type ore pulp valve, which relates to the technical field of valves, and comprises a valve body, a valve plate and a valve rod, the valve body comprises a left valve body and a right valve body which are connected through a bolt, the left valve body and the right valve body are provided with medium channels, the valve plate is arranged between the left valve body and the right valve body, the upper end and the lower end of the valve plate respectively penetrate out of the valve body, and the valve rod is connected with the valve plate. The valve plate is provided with a through hole used for being communicated with the medium channel, a ceramic valve body lining ring is installed in the medium channel, a ceramic valve plate lining ring is installed in the through hole, positioning grooves are formed in the side portion of the left valve body, the side portion of the right valve body and the side portion of the valve plate, and positioning protrusions matched with the positioning grooves are arranged on the side portion of the ceramic valve body lining ring and the side portion of the ceramic valve plate lining ring. The check valve can effectively prevent impurities such as suspended particles in a medium in a pipeline from entering an inner cavity of the valve body, prevents the valve plate from being blocked, is convenient to install, and has the advantages of being reliable in sealing and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a pneumatic penetrating slurry valve. Background Art

[0002] At present, a large number of various valves are used in slurry medium pipelines. The most common slurry valve is the knife-type gate valve. The movement direction of the gate is perpendicular to the direction of the fluid. The blade-shaped gate can be used to cut off the medium. The penetrating knife gate valve has stronger flow control and fluid cutoff capabilities and is suitable for high-demand occasions. Since the slurry medium contains a large amount of suspended particles, there is a gap between the inner cavity and the valve plate of the existing penetrating knife gate valve. After the suspended particles and other debris in the medium in the pipeline enter the valve body cavity, they cause serious wear and tear on the valve plate or even jam the valve plate, and the valve cannot be opened and closed normally. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the utility model provides a pneumatic penetrating slurry valve.

[0004] The technical solutions provided by this utility model are:

[0005] A pneumatic penetrating slurry valve comprises a valve body, a valve plate, and a valve stem. The valve body comprises a left valve body and a right valve body connected by bolts. The left valve body and the right valve body are provided with a medium channel. The valve plate is arranged between the left valve body and the right valve body, and its upper and lower ends respectively pass through the valve body. The valve plate is provided with a through hole for connecting the medium channel. A ceramic valve body liner is installed in the medium channel, and a ceramic valve plate liner is installed in the through hole. Positioning grooves are provided on the sides of the left valve body, the right valve body, and the valve plate. Positioning protrusions that are compatible with the positioning grooves are provided on the sides of the ceramic valve body liner and the ceramic valve plate liner.

[0006] A limiting block is provided on the side of the positioning protrusion, and a limiting groove adapted to the limiting block is provided on the positioning groove.

[0007] A rubber sealing sleeve is provided in the limiting groove.

[0008] A PTFE sealing ring is provided on the valve body near the medium channel, and the valve plate and the PTFE sealing ring form a valve seal.

[0009] An O-ring is provided on the outside of the PTFE sealing ring, and the valve plate and the O-ring form an external seal of the valve.

[0010] It also includes a connecting head and a pneumatic actuator. The upper end of the valve plate passes through the valve body and is fixed to the connecting head through a transverse pin. The upper end of the connecting head is connected to the valve stem, and the upper end of the valve stem is connected to the pneumatic actuator.

[0011] A plurality of supports are provided between the valve body and the pneumatic actuator.

[0012] The beneficial effects of the present invention are as follows: the present invention arranges a ceramic valve body liner in the medium channel of the valve body and arranges a ceramic valve plate liner in the through hole of the valve plate, so that there is no gap between the valve plate and the valve body, which can effectively prevent suspended particles and other debris in the medium in the pipeline from entering the inner cavity of the valve body and avoid the valve plate from getting stuck. The ceramic liner has good wear resistance and is easy to install through the arrangement of positioning protrusions and positioning grooves, and has the advantages of reliable sealing and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0014] Figure 2 This is a schematic cross-sectional view of an embodiment of the present invention;

[0015] Figure 3 for Figure 2 A partial enlarged view of . DETAILED DESCRIPTION

[0016] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0017] like Figure 1-3 As shown, a pneumatic penetrating slurry valve includes a valve body 1, a valve plate 2, and a valve stem 3. The valve body 1 includes a left valve body 11 and a right valve body 12 connected by bolts 6. The left valve body 11 and the right valve body 12 are provided with a medium channel 4. The valve plate 2 is arranged between the left valve body 11 and the right valve body 12, and its upper and lower ends respectively pass through the valve body 1. The valve plate 2 is provided with a through hole 21 for connecting the medium channel. When the valve is opened, the through hole 21 connects the medium channel. When the valve is closed, the part of the lower end of the valve plate passing through the valve body 1 moves upward to cut off the medium channel. A ceramic valve body liner 22 is installed in the medium channel 4, and a ceramic valve plate liner 23 is installed in the through hole 21. Positioning grooves 41 are provided on the sides of the left valve body 11, the right valve body 12, and the valve plate 2. The ceramic valve body liner 22 and the ceramic valve plate liner 23 are provided. The side is provided with a positioning protrusion 42 that is compatible with the positioning groove 41. When assembling the valve, the left valve body 11 is fitted with a ceramic valve body liner and the positioning protrusion is fitted with the positioning groove to form component one, the right valve body 12 is fitted with another ceramic valve body liner 22 and the positioning protrusion is fitted with the positioning groove to form component two, the valve plate 2 is fitted with the ceramic valve plate liner and the positioning protrusion is fitted with the positioning groove to form component three, and component one and component two are fixed and clamped by bolts 6. The ceramic liner ensures that there is no gap between the valve plate 2 and the valve body 1, which can effectively prevent suspended particles and other debris in the medium in the pipeline from entering the inner cavity of the valve body, avoiding the valve plate from getting stuck, and the ceramic liner has good wear resistance, which is beneficial to extending the service life of the valve. The setting of the positioning protrusion and positioning groove makes installation convenient.

[0018] In this embodiment, a stopper 32 is provided on the side of the positioning protrusion 42, and a stopper groove 31 is provided on the positioning groove 41 to match the stopper 32. Taking the valve plate 2 and the ceramic valve plate bushing 23 as an example, when the ceramic valve plate bushing 23 is fitted to the valve plate 2, the stopper 32 is confined in the stopper groove 31, effectively preventing the ceramic valve plate bushing 23 from shaking during valve opening and closing, that is, the up and down movement of the valve plate 2. Furthermore, a rubber sealing sleeve 32 is provided in the stopper groove 31. Due to its elastic properties, the rubber sealing sleeve 32 can clamp the stopper 32 to prevent it from escaping from the stopper groove 31, and can ensure the sealing of the stopper 32 and the stopper groove 31.

[0019] In this embodiment, a PTFE sealing ring 24 is provided near the medium channel 4 of the valve body 1, and the valve plate 2 and the PTFE sealing ring 24 constitute a valve seal. An O-ring 25 is provided on the outside of the PTFE sealing ring 24, and the valve plate 2 and the O-ring 25 constitute a valve outer seal. The double seal ensures the reliability of the valve seal and ensures that there is no leakage of the medium.

[0020] In this embodiment, the valve body 1 also includes a connector 27 and a pneumatic actuator 7 above the valve body 1. The upper end of the valve plate 2, which extends beyond the valve body 1, is secured to the connector 27 via a cross pin 26. The upper end of the connector 27 is connected to the valve stem 3, which in turn is connected to the pneumatic actuator 7. Several struts 5 are provided between the valve body 1 and the pneumatic actuator 7 to provide support and stability for the pneumatic actuator 7, ensuring smooth opening and closing of the valve.

[0021] The embodiments should not be regarded as limiting the present invention, and any non-inventive improvements based on the spirit of the present invention should be regarded as falling within the protection scope of the present invention.

Claims

1. A pneumatic penetrating slurry valve, comprising a valve body, a valve plate, and a valve stem, characterized in that: The valve body includes a left valve body and a right valve body connected by bolts, and the left valve body and the right valve body are provided with a medium channel. The valve plate is arranged between the left valve body and the right valve body, and its upper and lower ends respectively pass through the valve body. The valve plate is provided with a through hole for connecting the medium channel, and a ceramic valve body liner is installed in the medium channel. A ceramic valve plate liner is installed in the through hole. The sides of the left valve body, the right valve body and the valve plate are provided with positioning grooves, and the sides of the ceramic valve body liner and the ceramic valve plate liner are provided with positioning protrusions that are compatible with the positioning grooves.

2. The pneumatic penetrating slurry valve according to claim 1, characterized in that: A limiting block is provided on the side of the positioning protrusion, and a limiting groove adapted to the limiting block is provided on the positioning groove.

3. The pneumatic penetrating slurry valve according to claim 2, characterized in that: A rubber sealing sleeve is provided in the limiting groove.

4. The pneumatic penetrating slurry valve according to claim 1, characterized in that: A PTFE sealing ring is provided on the valve body near the medium channel, and the valve plate and the PTFE sealing ring form a valve seal.

5. The pneumatic penetrating slurry valve according to claim 4, characterized in that: An O-ring is provided on the outside of the PTFE sealing ring, and the valve plate and the O-ring form an external seal of the valve.

6. The pneumatic penetrating slurry valve according to claim 1, characterized in that: It also includes a connecting head and a pneumatic actuator. The upper end of the valve plate passes through the valve body and is fixed to the connecting head through a transverse pin. The upper end of the connecting head is connected to the valve stem, and the upper end of the valve stem is connected to the pneumatic actuator.

7. The pneumatic penetrating slurry valve according to claim 6, characterized in that: A plurality of supports are provided between the valve body and the pneumatic actuator.

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