Directional conveying switching valve

Abstract

The present invention discloses a directional conveying switching valve, which has a valve body, and the valve body has a material inlet, a first discharge port, and a second discharge port, wherein: a V-shaped valve plate is arranged in the valve body, and a V-shaped valve plate groove extending through the V-shaped valve plate is arranged on both side walls of the valve body, and the V-shaped valve plate can reciprocate along the V-shaped valve plate groove, forming a switch between two working positions: the first discharge port is cut off while the second discharge port is connected, or the first discharge port is connected while the second discharge port is cut off; the valve body is fixedly connected to a bracket, and a driving device is fixed on the bracket, and the driving device is connected to the V-shaped valve plate to drive the V-shaped valve plate to reciprocate. It has the characteristics of reliable switching of material flow direction, smooth opening and closing, not easy to be blocked, and good sealing effect, ensuring normal material discharge of the entire conveying system.

Description

Technical Field

[0001] The invention belongs to the technical field of valves, and in particular relates to a directional delivery switching valve. Background Art

[0002] Traditional valves used in material transportation when switching mostly adopt flap structures. This type of valve is mostly suitable for light materials. After long-term use, the flaps will become increasingly adhered to the materials, and the flaps will get stuck when switching. The flipping and switching are not in place, the closure is not tight, and leakage is likely to occur. The plug valve is also widely used in material transportation. For example, the publication date is 2014.11.05 and the publication number is CN 104132150 A. The present invention discloses a new type of hydraulic split plug valve, which consists of a valve body, a plug plate clamped in a horizontal slide groove on the inner wall of the valve body, and the plug plate is connected to a reciprocating power mechanism. The characteristics are as follows: the plug plates are two, arranged oppositely, and the two plug plates are located in two upper and lower planes. When the valve is closed, the two plug plates have upper and lower overlapping parts; the valve body is provided with an upper and lower sealing structure for sealing the upper and lower surfaces of the plug plate, and the horizontal slide groove of the clamped plug plate is provided with a side sealing structure for sealing the horizontal slide groove and the side of the plug plate. Compared with the existing technology, it has low power consumption and no leakage, and solves the problem of easy clogging and jamming of conventional valves on the market. It can be used as a valve for powder materials. This plug-in valve structure bears the weight of the upper material, and the resistance of the valve plate opening and closing is relatively large. The required driving force is also relatively large, and the corresponding power actuator has higher requirements. At the same time, materials with high pressure are easily squeezed and bonded to the track of the valve plate, blocking the opening and closing of the valve plate, resulting in a loose seal. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide a directional conveying switching valve which has reliable material flow direction switching, smooth opening and closing, is not easy to get stuck, and has good sealing effect.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a directional conveying switching valve, comprising a valve body, wherein the valve body has a material inlet, a first discharge port and a second discharge port, and is characterized in that: a V-shaped valve plate is arranged in the valve body, and V-shaped valve plate grooves through which the V-shaped valve plate extends are arranged on the two side walls of the valve body, and the V-shaped valve plate can reciprocate along the V-shaped valve plate groove, constituting the switching of two working positions in which the first discharge port is cut off while the second discharge port is connected or the first discharge port is connected while the second discharge port is stopped; the valve body is fixedly connected to a bracket, and a driving device is fixed on the bracket, and the driving device is connected to the V-shaped valve plate to drive the V-shaped valve plate to reciprocate.

[0005] The V-shaped valve plate comprises a first valve plate and a second valve plate, wherein the first valve plate and the second valve plate are fixedly connected at one side of their bottom to form a V-shaped structure in cross section, and connecting plates are respectively provided on both sides of the V-shaped structure, and the connecting plates are fixedly connected to the first valve plate and the second valve plate at the same time; a conducting notch and a stop-passing part are respectively provided on the first valve plate and the second valve plate, and the conducting notch of the first valve plate and the conducting notch of the second valve plate are staggered by a working position.

[0006] A sealing structure is arranged corresponding to the position of the V-shaped valve plate groove.

[0007] The sealing structure adopts a sealing strip or a flexible scraper material, which is fixed on the valve body by a pressure strip.

[0008] The driving device is a hydraulic cylinder, a gas cylinder or an electric push cylinder.

[0009] The beneficial effects of adopting the above technical solution are as follows: the directional conveying switching valve has a valve body, the valve body is a three-way valve body, has a material inlet, a first discharge port and a second discharge port, and an overall V-shaped valve plate is provided between the material inlet and the first and second discharge ports, the V-shaped valve plate is a rigid connection structure, which penetrates the valve body, and is driven by a driving device to reciprocate horizontally, so that the V-shaped valve plate has two working positions of conduction and cutoff on the valve body. The first valve plate and the second valve plate of the V-shaped valve plate are respectively provided with a conduction notch and a stop portion, and the conduction notch of the first valve plate and the conduction notch of the second valve plate are staggered by one working position. That is to say, when the position of the conduction notch of the first valve plate corresponds to the first discharge port, the stop portion of the second valve plate is located at a position to block the second discharge port, and at this time, the material inlet is connected to the first discharge port; when the second discharge port needs to be connected, the driving device drives the V-shaped valve plate to move horizontally, so that the position of the stop portion of the first valve plate corresponds to the first discharge port, thereby realizing the blocking of the material at the first discharge port. At the same time, the conduction notch of the second valve plate is located at a corresponding position of the second discharge port, and the material inlet is connected to the first discharge port, thereby realizing the switching and transportation of the material.

[0010] The V-shaped valve plate is an integral rigid connection structure, the valve plate is evenly stressed and not easily deformed. The V-shaped valve plate reciprocates along the V-shaped valve plate groove of the valve body, forming a positioning effect similar to that of a V-shaped guide rail, with accurate positioning and low sliding resistance.

[0011] The first and second valve plates are in an inclined state, and the pressure on the valve plate on the closed side is only the component of gravity. The pressure on the valve plate is relatively small, the valve plate is not easy to deform, the sealing effect is good, and the resistance to opening and closing of the valve plate is also small. The opening and closing is convenient and quick, which can reduce the power model of the valve plate drive device and reduce costs. Since the bearing pressure of the material on the valve plate is reduced, the material has a flushing effect on the valve plate during the falling process, and the material is not easy to adhere to the valve plate position, causing blockage of the channel. When the V-shaped valve plate reciprocates between the two working positions, the V-shaped valve plate groove can scrape the material adhered to the valve plate, reducing the occurrence of jamming.

[0012] The directional conveying switching valve has a three-channel structure and is used in conjunction with a drop pipe. When one side of the drop pipe becomes blocked after long-term operation, the traditional flap valve structure cannot switch due to material obstructing the flap, and the other spare drop pipe cannot be unloaded. The blocked drop pipe can only be cleared and unblocked before normal unloading or switching can be carried out. The directional conveying switching valve can still quickly switch to the other spare drop pipe for unloading when one side is blocked, thereby ensuring normal unloading of the entire conveying system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 for Figure 1 Right view of .

[0016] Figure 3 A three-dimensional view of a directional delivery switching valve with the drive device omitted.

[0017] Figure 4 It is a three-dimensional view of the V-shaped valve plate. DETAILED DESCRIPTION

[0018] 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.

[0019] like Figure 1 , 2, 3 shows a directional conveying switching valve, which has a valve body 1, the valve body having a material inlet 1.1, a first discharge port 1.3 and a second discharge port 1.2, a V-shaped valve plate 2 is arranged inside the valve body 1, and V-shaped valve plate grooves 1.4 extending through the V-shaped valve plate are arranged on both side walls of the valve body, and the V-shaped valve plate can reciprocate along the V-shaped valve plate groove, forming a switch between two working positions: the first discharge port is cut off while the second discharge port is open, or the first discharge port is open while the second discharge port is cut off. Figure 4 As shown, the V-shaped valve plate 2 comprises a first valve plate 2.1 and a second valve plate 2.2, the first valve plate 2.1 and the second valve plate 2.2 are fixedly connected at one side of the bottom thereof to form a V-shaped structure in cross section, and connecting plates 2.3 are respectively arranged on both sides of the V-shaped structure, and the connecting plates 2.3 are simultaneously fixedly connected to the first valve 2.1 and the second valve plate 2.2. The first valve plate 2.1 is provided with a first conduction notch 2.1.1 and a first stop portion 2.1.2, respectively, and the second valve plate is provided with a second conduction notch 2.2.1 and a second stop portion 2.2.2, and the first conduction notch 2.1.1 of the first valve plate 2.1 and the second conduction notch 2.2.1 of the second valve plate 2.2 are staggered by one working position. That is to say, when the position of the first conduction notch 2.1.1 corresponds to the first discharge port 1.3, the first discharge port 1.3 is connected to the material inlet 1.1, and at this time, the second stop portion 2.2.2 of the second valve plate 2.2 is located at the position corresponding to the second discharge port 1.2, and the conduction channel between the second discharge port 1.2 and the material inlet 1.1 is closed by the second valve plate. Similarly, when the V-shaped valve plate 2 is in another working position, the first discharge port 1.3 can be blocked and the second discharge port 1.2 can be connected.

[0020] The valve body is fixedly connected to a bracket 4, on which a driving device 5 is fixed. The driving device is connected to the V-shaped valve plate 2 to drive the V-shaped valve plate to reciprocate. The driving device is an actuator such as a hydraulic cylinder, an air cylinder, or an electric push cylinder. A sealing structure 3 is provided corresponding to the position of the V-shaped valve plate groove. The sealing structure 3 is made of materials such as a sealing strip or a flexible scraper, and is fixed to the valve body 1 by a pressure strip. The sealing structure 3 can scrape the material adhered to the valve plate to reduce the occurrence of blockage.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A directional conveying switching valve, comprising a valve body, wherein the valve body has a material inlet, a first material outlet and a second material outlet, and is characterized in that: A V-shaped valve plate is provided in the valve body, and V-shaped valve plate grooves extending through the V-shaped valve plate are provided on both side walls of the valve body, and the V-shaped valve plate can reciprocate along the V-shaped valve plate groove, constituting the switching of two working positions in which the first discharge port is cut off while the second discharge port is connected or the first discharge port is connected while the second discharge port is stopped; the valve body is fixedly connected to a bracket, and a driving device is fixed on the bracket, and the driving device is connected to the V-shaped valve plate to drive the V-shaped valve plate to reciprocate; the V-shaped valve plate has a first valve plate and a second valve plate, and the first valve plate and the second valve plate are fixedly connected at one side of their bottom to form a V-shaped structure in cross section, and connecting plates are respectively provided on both sides of the V-shaped structure, and the connecting plates are fixedly connected to the first valve plate and the second valve plate at the same time; a conducting notch and a stop part are respectively provided on the first valve plate and the second valve plate, and the conducting notch of the first valve plate and the conducting notch of the second valve plate are staggered by one working position; a sealing structure is provided corresponding to the position of the V-shaped valve plate groove.

2. The directional delivery switching valve according to claim 1, characterized in that: The sealing structure adopts a sealing strip or a flexible scraper material, which is fixed on the valve body by a pressure strip.

3. The directional delivery switching valve according to claim 1, characterized in that: The driving device is a hydraulic cylinder, a gas cylinder or an electric push cylinder.

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