Anti-clamping type opening and closing valve

Abstract

The invention discloses an anti-clamping opening and closing valve, which relates to the technical field of valves, and comprises a valve body, a valve core and a first moving baffle plate, the valve core is arranged in the valve body, the valve body is provided with a feeding channel corresponding to the feeding side of the valve core, and the first moving baffle plate swings in the feeding channel; the baffle plate is firstly moved to swing so as to be switched to a state of shielding a large-particle body flowing path or a state of not shielding the large-particle body flowing path, and the closing position of the valve element is arranged far away from the large-particle body settling position; according to the valve, conveying of large-particle objects in fluid can be cut off through the movable baffle plate before the valve is closed, the valve element is closed after the large-particle objects in the space where the valve element is located are settled under the influence of gravity, the valve blocking phenomenon caused by the large-particle objects in the conveyed fluid is effectively prevented, and normal closing of the valve is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to an anti-stuck opening and closing valve. Background Art

[0002] The valve body can realize the on and off of fluid transportation and is an indispensable component for conveying fluid. In some fluid transportation fields, the fluid to be transported contains a large number of large particles. For example, in the transportation process of deep-sea mining and river dredging, the conveying particle size reaches about 70-140mm, and the conveying pressure is also very high, which may reach about 25MPa or more. The number of large particles is also very large, reaching more than 30%; when conveying fluids containing large particles, solid-liquid separation is used to pressurize the liquid separately and then recoil the solid for transportation. This requires the use of valves to control the transportation sequence, but large particles often get stuck on the sealing surface of the valve opening and closing device at the moment the valve is closed, causing this closure failure. The closure failure will cause fluctuations in the conveying flow and pressure, severe vibration of the pipeline, and even damage to the valve.

[0003] Therefore, people are in urgent need of an anti-stuck opening and closing valve that can prevent large particles from blocking the valve and ensure that the valve can be closed normally. Summary of the invention

[0004] The purpose of the present invention is to provide an anti-stuck opening and closing valve to solve the problems existing in the above-mentioned prior art. By setting a pre-moving baffle plate, the fluid delivery can be cut off before closing the valve, effectively preventing large particles in the conveyed fluid from causing valve sticking, thereby ensuring the normal closing of the valve.

[0005] To achieve the above-mentioned objectives, the present invention provides the following solution: The present invention provides an anti-sticking opening and closing valve, comprising a valve body, a valve core and a pre-moving baffle plate, the valve core being arranged in the valve body, and a material incoming channel being arranged on the feed side of the valve body corresponding to the valve core, the pre-moving baffle plate swings in the material incoming channel, the pre-moving baffle plate swings to switch to a state of blocking the flow path of large particle objects or a state of not blocking the flow path of large particle objects, and the closed position of the valve core is set away from the sedimentation position of large particle objects.

[0006] Preferably, the proactive shielding plate is connected to an actuator for outputting rotational motion.

[0007] Preferably, the actuator is a swing hydraulic cylinder, a rotary motor or a crank-connecting rod mechanism capable of outputting rotary motion.

[0008] Preferably, when the incoming material channel is a curved channel, the pre-moving baffle is a dustpan-shaped shell, and the pre-moving baffle swings to the upper space or lower space at the curved channel bend to switch to a state of blocking the flow path of large particle objects or a state of not blocking the flow path of large particle objects.

[0009] Preferably, when the pre-moving shielding plate is located in the upper space of the incoming material channel, the edge of the opening end of the pre-moving shielding plate matches the inner circumferential wall of the incoming material channel.

[0010] Preferably, a sealing valve seat cooperating with the valve core is provided at a position of the incoming material channel close to the valve core, the discharge side of the valve core is a vertical channel, and the valve core moves toward or away from the sealing valve seat in the vertical channel through a driving mechanism.

[0011] Preferably, the valve body comprises an upper valve body and a lower valve body, the upper valve body is sealingly connected to the lower valve body, and the sealing valve seat and the incoming material channel are both arranged near the connection between the upper valve body and the lower valve body.

[0012] Compared with the prior art, the present invention mainly achieves the following technical effects:

[0013] The method of swinging and intercepting the flow by the pre-moving baffle plate can ensure that when the pre-moving baffle plate swings, even if there are large particles in front of the swing, the large particles will always have a certain amount of movement space and will not jam the normal swing of the pre-moving baffle plate; since the incoming material channel is located on the feed side of the valve core and the closing position of the valve core is set away from the sedimentation position of the large particles, the pre-moving baffle plate can be used to cut off the fluid delivery before closing the valve, and the valve core can be closed after the large particles in the space where the valve core is located settle and leave the valve core position under the influence of gravity, thereby effectively preventing the valve from being stuck due to large particles in the conveying fluid and ensuring the normal closing of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the main structure of the embodiment of the present invention when the pre-moving shielding plate of the anti-stuck opening and closing valve whose incoming material channel is a bent channel is in the shielding position;

[0016] Figure 2 It is a side structural schematic diagram of the embodiment of the present invention when the pre-moving shielding plate of the anti-stuck opening and closing valve whose incoming material channel is a bent channel is in the shielding position;

[0017] Figure 3 It is a schematic diagram of the main structure of the embodiment of the present invention when the pre-moving shielding plate of the anti-stuck opening and closing valve whose incoming material channel is a bent channel is in an unblocked position;

[0018] Figure 4 It is a side view structural schematic diagram of the anti-stuck opening and closing valve in the embodiment of the present invention, in which the incoming material channel is a bent channel, when the pre-moving shielding plate is in an unblocked position;

[0019] Figure 5 It is a side view structural schematic diagram of the anti-stuck opening and closing valve in which the material inlet channel is a vertical channel in an embodiment of the present invention when the pre-moving shielding plate is in an unblocked position;

[0020] Figure 6 It is a side view structural schematic diagram of the anti-stuck opening and closing valve in which the incoming material channel is a vertical channel in an embodiment of the present invention when the pre-moving shielding plate is in the shielding position;

[0021] Among them, 1. upper valve body; 2. lower valve body; 3. valve core; 4. sealing valve seat; 5. pre-moving baffle; 6. actuator; 7. feed pipe; 8. driving mechanism; 9. incoming channel; 10. vertical channel. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The purpose of the present invention is to provide an anti-stuck opening and closing valve to solve the problems existing in the prior art. By setting a pre-moving baffle plate, the fluid delivery can be cut off before closing the valve, effectively preventing large particles in the conveyed fluid from causing valve sticking, thereby ensuring the normal closing of the valve.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Please refer to Figures 1 to 4As shown, an anti-stuck opening and closing valve is provided, including a valve body, a valve core 3 and a pre-moving baffle plate 5. The valve core 3 is arranged in the valve body, and an incoming channel 9 is arranged on the feeding side of the valve body corresponding to the valve core 3. The incoming channel 9 can be a vertical channel, a bent channel, a horizontal channel, an inclined channel, a chute, a silo, etc. The cross-section of the incoming channel 9 can be square, circular, etc. The pre-moving baffle plate 5 swings in the incoming channel 9, and the pre-moving baffle plate 5 swings to switch to a state of blocking the flow path of large particles or a state of not blocking the flow path of large particles. The closed position of the valve core 3 is set away from the sedimentation position of the large particles. The design of the pre-moving baffle plate 5 can be determined according to the size of the incoming channel 9 and the setting position of the pre-moving baffle plate 5, It can be achieved by blocking the movement of large particles. The specific anti-stuck valve principle is: the swing-cutting method of the pre-moving baffle plate 5 can ensure that when the pre-moving baffle plate 5 swings, even if there are large particles in front of the swing, the large particles will always have a certain movement space and will not jam the normal swing of the pre-moving baffle plate 5; since the incoming material channel 9 is located on the feed side of the valve core 3, and the closing position of the valve core 3 is set away from the sedimentation position of the large particles, the pre-moving baffle plate 5 can be used to cut off the fluid delivery before closing the valve, and the valve core 3 can be closed after the large particles in the space where the valve core 3 is located settle and leave the valve core position under the influence of gravity, thereby effectively preventing the valve from being stuck by large particles in the conveying fluid and ensuring the normal closing of the valve.

[0026] The first-moving shielding plate 5 is connected to an actuator 6 for outputting a rotational motion, and the first-moving shielding plate 5 is driven by the actuator 6 to swing.

[0027] In this embodiment, the actuator 6 is a swing hydraulic cylinder. In other embodiments, a rotary motor, a crank-connecting rod mechanism capable of outputting rotary motion, or other devices capable of outputting rotary motion may also be used.

[0028] In this embodiment, taking the incoming material channel 9 as a bending channel as an example, the pre-moving baffle plate 5 is arranged at the bending part of the bending channel, and the pre-moving baffle plate 5 is a dustpan-shaped shell. The pre-moving baffle plate 5 swings to the upper space or the lower space at the bending part of the bending channel 9 to switch to the state of blocking the flow path of large particle objects or the state of not blocking the flow path of large particle objects; when the pre-moving baffle plate 5 is located in the upper space of the incoming material channel 9, it will not block the conveyance of the fluid in the incoming material channel 9 and the large particle objects in the fluid; when the pre-moving baffle plate 5 is located in the lower space of the incoming material channel 9, it can achieve the blocking of the movement path of large particle objects; the swing axis of the pre-moving baffle plate 5 and the axis of the feed section of the incoming material channel 9 are parallel, coincident, inclined to each other or arranged in different planes.

[0029] In this embodiment, when the pre-moving baffle plate 5 is located in the upper space at the bend of the incoming material channel 9, the edge of the opening end (i.e., the dustpan-shaped structure's dustpan-shaped end) of the pre-moving baffle plate 5 matches the inner circumferential wall of the incoming material channel 9. At the same time, the surface of the pre-moving baffle plate 5 is designed to be in accordance with the shape of the fluid flow, which can effectively reduce the fluid resistance.

[0030] A sealing valve seat 4 matching the valve core 3 is provided at a position of the incoming material channel 9 near the valve core 3. The discharge side of the valve core 3 is a vertical channel 10. The valve core 3 moves toward or away from the sealing valve seat 4 in the vertical channel 10 through the driving mechanism 8. The setting of the vertical channel 10 is conducive to the rapid sedimentation of large particles.

[0031] In this embodiment, the driving mechanism 8 is a hydraulic cylinder. In other embodiments, the driving mechanism 8 may also be other devices that can output linear motion, such as an electric telescopic rod.

[0032] The valve body includes an upper valve body 1 and a lower valve body 2, the upper valve body 1 is sealed and connected to the lower valve body 2, and the sealing valve seat 4 and the incoming material channel 9 are arranged near the connection between the upper valve body 1 and the lower valve body 2, so as to facilitate subsequent disassembly maintenance or parts replacement.

[0033] In this embodiment, the proactive shielding plate 5 is switched between two positions at the bend during actual use, the two positions being the highest point of the upper space of the incoming channel 9 and the lowest point of the lower space of the incoming channel 9 .

[0034] In other embodiments, when facing other incoming material channels 9 of different shapes, the pre-moving shielding plate 5 can be set to a plate shape or other shapes, aiming to block or open the flow path of large particle objects by swinging the pre-moving shielding plate 5.

[0035] In actual use, taking the bent incoming channel 9 as an example, when the anti-stuck opening and closing valve is ready to close the valve seal, the pre-moving baffle plate 5 is first driven by the actuator 6 to reach the lowest point of the lower space of the incoming channel 9 to intercept large particles in the fluid, and water and small particles continue to flow in small amounts. At the same time, large solid particles in the fluid in the vertical channel 10 move downward and settle under the influence of gravity, gradually moving away from the sealing position of the valve core 3; after a short waiting time, the large particles above the pre-moving baffle plate 5 are intercepted by the pre-moving baffle plate 5 and will not continue to fall, while the large particles below the pre-moving baffle plate 5 have naturally fallen beyond the sealing position of the valve core 3 under the action of gravity. At this time, closing the valve core 3 can prevent the valve from getting stuck.

[0036] When the valve core 3 is in contact with the sealing valve seat 4 and a better seal is formed, large particles will no longer cause valve jamming. At this time, the pre-moving baffle plate 5 can be made to release the obstruction of the incoming material channel 9. Driven by the actuator 6, the pre-moving baffle plate 5 swings upward. During the swinging process, the large particles that were originally temporarily stored in the pre-moving baffle plate 5 are dumped onto the main valve core 3 and are washed away by the fluid when the valve is opened next time.

[0037] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0038] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0039] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An anti-stuck opening and closing valve, characterized in that: It includes a valve body, a valve core and a pre-moving baffle plate, the valve core is arranged in the valve body, the valve body is provided with an incoming channel on the feed side corresponding to the valve core, the pre-moving baffle plate swings in the incoming channel, the pre-moving baffle plate swings to switch to a state of blocking the flow path of large particle objects or a state of not blocking the flow path of large particle objects, and the closed position of the valve core is set away from the sedimentation position of large particle objects.

2. The anti-stuck opening and closing valve according to claim 1, characterized in that: The first-moving shielding plate is connected to an actuator for outputting a rotational motion.

3. The anti-stuck opening and closing valve according to claim 2, characterized in that: The actuator is a swing hydraulic cylinder, a rotary motor or a crank-connecting rod mechanism capable of outputting rotary motion.

4. The anti-sticking opening and closing valve according to claim 1, characterized in that: When the incoming material channel is a bending channel, the pre-moving baffle is a dustpan-shaped shell, and the pre-moving baffle swings to the upper space or lower space at the bending point of the bending channel to switch to a state of blocking the flow path of large particle objects or a state of not blocking the flow path of large particle objects.

5. The anti-sticking opening and closing valve according to claim 4, characterized in that: When the first-moving shielding plate is located in the upper space of the incoming material channel, the edge of the opening end of the first-moving shielding plate matches the inner peripheral wall of the incoming material channel.

6. The anti-sticking on-off valve according to claim 1, characterized in that: A sealing valve seat matching with the valve core is arranged at a position of the incoming material channel close to the valve core, and the outgoing material side of the valve core is a vertical channel. The valve core moves toward or away from the sealing valve seat in the vertical channel through a driving mechanism.

7. The anti-sticking on-off valve according to claim 6, characterized in that: The valve body comprises an upper valve body and a lower valve body, the upper valve body is sealedly connected to the lower valve body, and the sealing valve seat and the incoming material channel are both arranged near the connection between the upper valve body and the lower valve body.

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