High pressure plunger type blow valve

Abstract

The utility model is suitable for valve technical field provides a kind of high-pressure plunger type discharge valve, including the valve body with feed inlet, one end of valve body is inserted into mounting piece, plunger is inserted in the valve body, the discharge outlet closed by plunger is communicated on the valve body;The plunger is connected with the movable guide block at the end away from feed inlet, the support column for guiding guide block is connected to the end of valve body away from feed inlet, the adjusting assembly for adjusting the position of plunger is equipped at the end of guide block away from plunger, the adjusting screw is rotatably connected with the anti-rotation block, the cover is threadedly sleeved on the adjusting screw, by this, the utility model can control the on-off of passage, further avoid the problem that plunger is deflected under the action of high pressure, the setting of guide block and support column can further provide the lateral orientation support for the end of plunger, further avoid that plunger is skewed under the action of high pressure.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a high-pressure plunger-type discharge valve. Background Technology

[0002] Plunger-type discharge valves are used for discharging materials from reactors and other containers, as well as for shut-off operations without dead zones in pipelines.

[0003] Currently, existing plunger-type discharge valves, such as the Chinese patent document CN204985759U, disclose a double-seal high-performance plunger-type discharge valve, including a valve body, valve core, valve stem, and handwheel. The valve core is a plunger body with a valve core sealing surface at one end and a fixed connection at the other end to the end face of the valve stem nut. An anti-rotation device is provided between the valve stem nut and the support. One end of the valve stem is fixedly connected to the handwheel, and the other end is threadedly connected to the valve stem nut. A circular hole concentric with the valve stem is formed at the center of the plunger body at the end connected to the valve stem nut, and the diameter of this hole is larger than the outer diameter of the valve stem. The valve core sealing surface adopts a double-seal structure composed of a metal sealing ring and an elastic sealing ring. The metal sealing ring has a conical sealing surface that cooperates with the valve seat, and the outer circular surface of the elastic sealing ring dynamically seals with the inner cavity wall of the valve body.

[0004] Although the aforementioned patents have the advantage of good sealing performance, when the discharge valve is opened to discharge material, most of the valve core is disengaged from the valve cavity. Under the high pressure inside the valve cavity and when the force is unbalanced, the valve core is prone to lateral deviation. When the valve core is lateral, it is very easy to cause poor sealing and leakage. Utility Model Content

[0005] To address the aforementioned deficiencies, the purpose of this utility model is to provide a high-pressure plunger-type discharge valve, which can control the opening and closing of the channel, further avoiding the problem of plunger lateral deviation under high pressure. The guide block and support column can further provide lateral support for the end of the plunger, further preventing the plunger from tilting under high pressure.

[0006] To achieve the above objectives, this utility model provides a high-pressure plunger-type discharge valve, including a valve body with an inlet, one end of the valve body being inserted into an installation component, a plunger being inserted into the valve body, and an outlet being connected to the valve body and sealed by the plunger. The plunger is connected to a movable guide block at the end furthest from the feed inlet, and the valve body is connected to a support column for guiding the guide block at the end furthest from the feed inlet.

[0007] According to the high-pressure plunger-type discharge valve of this utility model, the end of the guide block away from the plunger is provided with an adjustment component for adjusting the position of the plunger. The adjustment component includes an anti-rotation block connected to the guide block. The anti-rotation block is slidably connected to the support column. The anti-rotation block is rotatably connected to an adjustment screw. A cover is threaded on the adjustment screw. The cover is connected to the support column.

[0008] According to the high-pressure plunger-type discharge valve of this utility model, the angle between the direction of material movement at the discharge port and the direction of material movement within the valve body is an acute angle.

[0009] According to the present invention, a high-pressure plunger-type discharge valve is provided between the valve body and the plunger, a packing gland is provided on the side of the guide bushing near the guide block, a detachable packing pressure plate is provided on the valve body for abutting the packing gland, and a plurality of sealing elements are provided between the guide bushing and the packing gland.

[0010] According to the high-pressure plunger-type discharge valve of this utility model, the sealing element is a flexible graphite ring.

[0011] According to the high-pressure plunger-type discharge valve of this utility model, the packing pressure plate is connected to the valve body by bolts, and a handwheel is installed at the end of the adjusting screw away from the guide block.

[0012] This utility model provides a high-pressure plunger-type discharge valve, including a valve body with an inlet, which forms a material flow channel. One end of the valve body is inserted into a mounting component, which connects the valve body and a pipeline. A plunger is inserted into the valve body, and the valve body and plunger cooperate to control the flow of material. The valve body has an outlet that is closed by the plunger. When the plunger moves to the outlet position, it can close the outlet, which helps to close the material flow channel. A movable guide block is connected to the end of the plunger away from the inlet. The guide block provides support to the end of the plunger. When the guide block cooperates with the support column, it can prevent the plunger from deflecting to the side, further avoiding leakage caused by the plunger deflection. A support column is connected to the end of the valve body away from the inlet to guide the guide block. The support column provides guidance and support for the guide block, facilitating the movement of the guide block along the straight line of the support column. Attached Figure Description

[0013] Figure 1 This is a structural cross-sectional view of the present invention; Figure 2 yes Figure 1 Schematic diagram of Part A; In the diagram: 1-valve body, 2-inlet, 3-outlet, 4-plunger, 5-support column, 6-adjusting screw, 7-cover, 8-guide block, 9-anti-rotation block, 10-installation component, 11-guide bushing, 12-flexible graphite ring, 13-packing gland, 14-packing pressure plate, 15-metal spiral wound gasket. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0015] See Figure 1 , Figure 2 This utility model provides a high-pressure plunger-type discharge valve, which includes a valve body 1 with an inlet 2 and a movable plunger 4. The valve body 1 is connected to an outlet 3 that is sealed by the plunger 4. The valve body 1 is sleeved on the outside of the plunger 4. One end of the valve body 1 is inserted into the mounting part 10. Several metal spiral wound gaskets 15 for sealing are provided between the valve body 1 and the mounting part 10. The metal spiral wound gaskets 15 are respectively sleeved on the stepped structure position outside the valve body 1 (the mounting part 10 is a flange, and the mounting part 10 is provided with a stepped structure that cooperates with the valve body 1). The valve body 1 and the mounting part 10 are connected by bolts. When the material in the pipeline flows through the valve cavity inside the valve body 1, the flow of the material can be controlled by adjusting the position of the plunger 4.

[0016] A guide bushing 11 is provided between the valve body 1 and the plunger 4. A packing gland 13 is provided on the side of the guide bushing 11 near the guide block 8. A removable packing pressure plate 14 is provided on the valve body 1 to abut against the packing gland 13. Several sealing elements are provided between the guide bushing 11 and the packing gland 13. The guide bushing 11 guides the plunger 4 to prevent the plunger 4 from shifting and causing leakage. The sealing elements are used to seal the gap between the valve body 1 and the plunger 4 to prevent material leakage. The sealing element is a flexible graphite ring 12 (the flexible graphite ring 12 is used for sealing and is existing technology, so it will not be described in detail here). The cooperation between the packing pressure plate 14 and the packing gland 13 can restrict the position of the flexible graphite ring 12 and prevent the flexible graphite ring 12 from detaching from the valve body 1.

[0017] A movable guide block 8 is connected to the end of the plunger 4 away from the feed port 2. The guide block 8 is equipped with an adjustment component for adjusting the position of the plunger 4. A support column 5 for guiding the guide block 8 is connected to the end of the valve body 1 away from the feed port 2. The guide block 8 abuts against the support column 5 and can slide along the support column 5. The support column 5 can provide guidance and support for the guide block 8, preventing the guide block 8 from shifting position, thereby preventing the plunger 4 from deflecting and causing leakage. The guide block 8 does not rotate. The arrangement of the guide block 8 and the support column 5 can further prevent the plunger 4 from deflecting when the pressure is unbalanced, which is conducive to further preventing leakage. The adjustment component is used to adjust the position of the plunger 4 in the valve body 1, so as to make the plunger 4 block or open the discharge port 3.

[0018] See Figure 1 , Figure 2 Furthermore, the adjustment component of this utility model includes an anti-rotation block 9 connected to the guide block 8, the anti-rotation block 9 being slidably connected to the support column 5, the anti-rotation block 9 being rotatably connected to an adjustment screw 6, a cover 7 being threaded onto the adjustment screw 6, the cover 8 being connected to the support column 5, and a handwheel (not shown in the figure) being installed at the end of the adjustment screw 6 away from the guide block 8. Rotating the adjustment screw 6 can easily adjust the position of the plunger 4 inside the valve body 1, and the handwheel can be easily held and rotated by the worker.

[0019] In summary, this utility model provides a high-pressure plunger-type discharge valve. The valve body is designed to form a material flow channel, and the mounting component is used to connect the valve body and the pipeline. The valve body and the plunger cooperate to control the flow of material. After the plunger moves to the discharge port position, it can close the discharge port, which is beneficial to closing the material flow channel. The guide block provides support for the end of the plunger. After the guide block cooperates with the support column, it can prevent the plunger from deviating to the side, further avoiding leakage problems caused by the plunger's deviation. The support column can provide guidance and support for the guide block, facilitating the movement of the guide block along the straight line of the support column.

[0020] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A high-pressure plunger-type discharge valve, characterized in that, It includes a valve body with a feed inlet, one end of the valve body is inserted into the mounting component, a plunger is inserted inside the valve body, and a discharge port connected to the valve body is closed by the plunger. The plunger is connected to a movable guide block at the end away from the feed inlet, and the valve body is connected to a support column for guiding the guide block at the end away from the feed inlet. The guide block is provided with an adjustment component for adjusting the position of the plunger at one end away from the plunger. The adjustment component includes an anti-rotation block connected to the guide block. The anti-rotation block is slidably connected to the support column. The anti-rotation block is rotatably connected to an adjustment screw. A cover is threaded onto the adjustment screw. The cover is connected to the support column.

2. The high-pressure plunger-type discharge valve according to claim 1, characterized in that, The angle between the direction of material movement at the discharge port and the direction of material movement within the valve body is an acute angle.

3. The high-pressure plunger-type discharge valve according to claim 1, characterized in that, A guide bushing is provided between the valve body and the plunger. A packing gland is provided on the side of the guide bushing near the guide block. A detachable packing pressure plate is provided on the valve body for abutting the packing gland. Several sealing elements are provided between the guide bushing and the packing gland.

4. The high-pressure plunger-type discharge valve according to claim 3, characterized in that, The sealing element is a flexible graphite ring.

5. The high-pressure plunger-type discharge valve according to claim 3, characterized in that, The packing plate is bolted to the valve body, and a handwheel is installed at the end of the adjusting screw away from the guide block.

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