Abrasion-free flip valve

Abstract

The utility model discloses an abrasion-free flip valve which comprises a valve body, a charging barrel located in the valve body, a valve plate and a connecting arm, wherein the valve plate and the connecting arm are located between the charging barrel and the valve body. A conical hopper is arranged below the valve body; the valve plate is vertically connected with the connecting arm; the valve plate is driven by the connecting arm to rotate so as to open or close the discharge hole of the charging barrel; and when the discharging port is in a completely-opened state, the valve plate is located on one side of the charging barrel, and the movement range of the valve plate is limited between the charging barrel and the conical hopper in the process that the valve plate is opened to close the discharging port. According to the abrasion-free flip valve, the valve plate covers the discharging port from the outer portion of the charging barrel, the inner space of the charging barrel is not occupied, the rotating movement range of the valve plate is limited between the charging barrel and the valve body by adjusting the rotating center of the connecting arm, and therefore the overall size of the flip valve is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of material conveying, in particular to a wear-free flap valve. Background Art

[0002] In the conveying system, a valve needs to be set between two adjacent devices in order to disconnect or connect the cavities of the two devices. The commonly used valve on the market is a flap valve, which opens and closes the valve plate through a driving device and a swing arm. However, the swing arm in the existing flap valve has a large movement area (such as an arc-shaped swing arm), resulting in a larger overall valve size, and the valve plate often cannot be covered with the discharge port in the direction perpendicular to the end face, resulting in friction between the valve plate and the barrel of the valve, which is prone to friction noise and can also cause wear of the valve plate, affecting the sealing effect. Utility Model Content

[0003] In order to solve the technical problems in the prior art that the flap valve has a large size, the valve plate is easy to wear, and the sealing effect is affected, the utility model provides a wear-free flap valve to solve the above problems.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a wear-free flip valve, including a valve body, a barrel located in the valve body, and a valve plate and a connecting arm located between the barrel and the valve body; a conical hopper is provided below the valve body, and the valve plate is vertically connected to the connecting arm; the valve plate is driven to rotate by the connecting arm, thereby opening or closing the discharge port of the barrel; when the valve plate switches between an open state and a closed state, the rotation center of the connecting arm is offset along the axial direction of the barrel, so that the offset of the valve plate in the up and down directions is reduced, so that the movement range of the valve plate is limited between the barrel and the conical hopper.

[0005] Furthermore, the connecting arm drives the valve plate to vertically upwardly close the discharge port.

[0006] Furthermore, it also includes a driving assembly and a connecting rod assembly, wherein the connecting rod assembly includes an active rod and a driven rod, the active rod is driven to rotate by the driving assembly, one end of the active rod and the driven rod are both hinged to the connecting arm, and the other end of the driven rod is hinged to the fixed shaft.

[0007] Furthermore, the active rod and the driven rod are located between the valve body and the barrel, the valve body is connected with a first rotating shaft and a second rotating shaft arranged in parallel, the first rotating shaft is circumferentially fixed to the active rod and the driving assembly, and the second rotating shaft is connected to the driven rod.

[0008] Furthermore, when the discharge port is in a fully open state, the distance between the first rotating shaft and the valve plate is greater than the distance between the second rotating shaft and the valve plate.

[0009] Furthermore, the rotation radius of the driven rod is smaller than the rotation radius of the active rod.

[0010] Furthermore, when the discharge port is in a fully open state, the hinge axis between the driven rod and the connecting arm is located between the hinge axis between the active rod and the connecting arm and the valve plate; when the discharge port is in a closed state, the hinge axis between the active rod and the connecting arm is located directly above the hinge axis between the driven rod and the connecting arm.

[0011] Furthermore, when the discharge port is in a fully opened state, the connecting arm is in a horizontal state.

[0012] Furthermore, the distance between the first rotating shaft and the second rotating shaft is smaller than the sum of the rotation radius of the driven rod and the rotation radius of the active rod.

[0013] Furthermore, the driving assembly includes a driving cylinder and a swing arm, two ends of the swing arm are respectively connected to the driving cylinder and the first rotating shaft, and the driving cylinder is rotationally connected to the valve body.

[0014] Furthermore, one end of the active rod and the driven rod hinged to the connecting arm is provided with a U-shaped notch.

[0015] The beneficial effects of the utility model are:

[0016] (1) In the wear-free flip valve described in the utility model, the valve plate covers the discharge port from the outside of the barrel and does not occupy the internal space of the barrel. By adjusting the rotation center of the connecting arm, the rotation range of the valve plate is limited to between the barrel and the valve body, thereby reducing the overall size of the flip valve.

[0017] (2) In the utility model, when the valve plate closes the discharge port, the connecting arm just moves to a vertical state, and just fits with the discharge port in the horizontal and vertical directions, thereby avoiding friction between the valve plate and the end face of the barrel and improving the sealing effect.

[0018] (3) The utility model realizes precise adjustment of the position of the connecting arm during its rotation by connecting the active rod and the driven rod with the connecting arm, thereby effectively controlling the horizontal and vertical movement distances. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 This is a front view of the wear-free flap valve described in the utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the wear-free flap valve of the utility model when it is in the valve opening state;

[0022] Figure 3 It is a partial internal schematic diagram of the utility model when it is in a valve-closed state;

[0023] Figure 4It is a side view of the active rod or the driven rod in the utility model.

[0024] In the figure, 1, valve body, 101, conical hopper, 102, feed port, 103, discharge port, 2, barrel, 201, discharge port, 3, valve plate, 4, connecting arm, 5, drive assembly, 501, drive cylinder, 502, swing arm, 6, connecting rod assembly, 601, active rod, 602, driven rod, 7, first rotating shaft, 8, second rotating shaft, 9, first articulated shaft, 10, second articulated shaft, 11, U-shaped notch, 12, intersection. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] like Figure 1-Figure 3 As shown, a wear-free flip valve comprises a valve body 1, a barrel 2 located in the valve body 1, and a valve plate 3 and a connecting arm 4 located between the barrel 2 and the valve body 1; a conical hopper 101 is provided below the valve body 1, the valve body 1 above the conical hopper 101 is a regular square structure, a feed port 102 is provided at the top of the valve body 1, and a discharge port 103 is provided at the bottom; the barrel 2 is a cylindrical structure, the top of the barrel 2 is fixed at the feed port 102, and a discharge port 201 is provided at the bottom of the barrel 2 and is located inside the valve body 1; the material enters the barrel 2 from the feed port 102, and enters the lower-level equipment after passing through the discharge port 201 and the discharge port 103 in sequence.

[0027] The valve plate 3 is vertically connected to the connecting arm 4, and the two can be fixed or slightly shaken, which helps to better fit the discharge port 201 when closing the cover; the valve plate 3 is driven to rotate by the connecting arm 4, thereby opening or closing the discharge port 201 of the barrel 2, that is, the valve plate 3 prevents the material from being transmitted to the lower-level equipment by closing the discharge port 201, and the valve body 1 is arranged outside the barrel 2, which can shield the moving parts (such as the valve plate 3 and the connecting arm 4), play a role in dust and collision prevention, and improve the service life; the feed port 102 and the discharge port 103 can be provided with flanges for easy installation with the upper and lower equipment.

[0028] When the discharge port 201 is in a fully open state, the valve plate 3 is located on one side of the barrel 2. In the process of the valve plate 3 opening and closing the discharge port 201, the movement range of the valve plate 3 is limited between the barrel 2 and the conical hopper 101. The valve plate 3 moves outside the barrel 2. When the valve plate 3 closes the discharge port 201, the valve plate 3 is in a horizontal state and the connecting arm 4 is in a vertical state. When the discharge port 201 is opened, the valve plate 3 flips to the side of the barrel 2 to fully open the channel between the discharge port 201 and the discharge port 103.

[0029] In a traditional flip valve, the rotation center of the valve plate 3 is fixed, which leads to a large movement range of the valve plate 3, an increase in the overall size of the flip valve, and moving parts can often only be arranged outside the valve body 1. It can be seen from the drawings of the utility model that the movement range of the valve plate 3 is located in the conical hopper 101 area below the barrel 2. The diameter of the conical hopper 101 gradually shrinks and the radial movement space is limited. Therefore, the utility model reduces the movement range of the valve plate 3 by adjusting the rotation center of the connecting arm 4 (that is, the rotation center of the valve plate 3), and the action of opening and closing the valve can be completed within a smaller range between the barrel 2 and the valve body 1. Specifically, the rotation center of the connecting arm 4 is offset along the axial direction of the barrel 2, so that the displacement of the valve plate 3 in the up and down directions is reduced. For example, during the closing process of the valve plate 3, the rotation center of the connecting arm 4 is offset upward, that is, the rotation center of the connecting arm 4 is offset toward the feed port 102. When the connecting arm 4 drives the valve plate 3 to gradually rotate from the side to the bottom of the barrel 2, in the horizontal direction, the valve plate 3 gradually approaches the center of the barrel 2, and in the vertical direction, the valve plate 3 gradually moves downward. If the rotation center remains unchanged, a larger space is required for the valve plate 3 to rotate, and at the moment of opening or closing, the valve plate 3 will have a certain friction with the discharge port 201; after using the solution of the utility model, during the rotation process, during the closing action of the valve plate 3, it is gradually lifted upward, and the connecting arm 4 gradually moves above the barrel 2, then the displacement of the valve plate 3 in the vertical direction is reduced, and less space between the barrel 2 and the valve body 1 is occupied in both the vertical and lateral directions, thereby realizing the limitation of the movement range of the valve plate 3.

[0030] At the moment of valve plate 3 opening, due to the downward movement of the rotation center, valve plate 3 has a downward offset movement, and can realize vertical opening (closing action is the same), so at the moment of closing and opening the discharge port 201, no friction is generated with the discharge port 201, and the sealing effect is good. The utility model has been verified to be stable in operation, and can still effectively seal 2 tons of materials without leakage after the gas source fails for 12 hours.

[0031] The barrel 2 that is in direct contact with the material is located inside, and the external valve body 1 is connected to the upper and lower devices. Therefore, the structural strength requirements of the barrel 2 are not high, and it can be made of non-metallic materials. No metal foreign matter will be introduced during the wear process, and replacement is very convenient.

[0032] The connection arm 4 can be driven to deflect in the horizontal and vertical directions by different driving parts to realize the rotation of the connection arm 4 and the change of the rotation center. At this time, the motion modes of different driving parts need to be accurately calculated, and the control accuracy is required to be high. The utility model adopts the following structure: the flap valve includes a driving component 5 and a connecting rod component 6, the connecting rod component 6 includes an active rod 601 and a driven rod 602, the active rod 601 is driven to rotate by the driving component 5, one end of the active rod 601 and the driven rod 602 are both hinged to the connection arm 4, and the other end of the driven rod 602 is hinged to the fixed shaft.

[0033] like Figure 2 As shown, one end of the active rod 601 is fixed to the first rotating shaft 7, and the other end is hinged to the connecting arm 4 at the first hinge shaft 9. The driving component 5 drives the first rotating shaft 7 to rotate, thereby driving the active rod 601 to rotate around the center of the first rotating shaft 7. One end of the driven rod 602 is connected to the second rotating shaft 8, and the other end is hinged to the connecting arm 4 at the second hinge shaft 10. The first rotating shaft 7 and the second rotating shaft 8 are arranged in parallel.

[0034] When the connecting arm 4 is driven by the active rod 601 to move, the driven rod 602 limits the movement range of the connecting arm 4, and the driven rod 602 follows the movement of the connecting arm 4 and correspondingly generates a rotational movement around the second rotation axis 8. Through the coordination of the active rod 601 and the driven rod 602, the connecting arm 4 is driven by the two articulated shafts to move stably, and at the same time, the rotation center of the connecting arm 4 is the first articulated shaft 9, which is in an active state under the drive of the active rod 601, and the rotation center position of the connecting arm 4 can be changed.

[0035] The driving assembly 5 includes a driving cylinder 501 and a swing arm 502. The two ends of the swing arm 502 are respectively connected to the driving cylinder 501 and the first rotating shaft 7. The driving cylinder 501 is rotatably connected to the valve body 1. The telescopic rod of the driving cylinder 501 is not in the same plane as the first rotating shaft 7 and the second rotating shaft 8. When the telescopic rod is extended or retracted, the swing arm 502 is driven to swing, thereby driving the first rotating shaft 7 to rotate.

[0036] The active rod 601 , the driven rod 602 , the first rotating shaft 7 and the second rotating shaft 8 are also preferably located between the valve body 1 and the barrel 2 .

[0037] In a specific embodiment of the present invention, when the discharge port 201 is in a fully open state, the distance between the first rotating shaft 7 and the valve plate 3 is greater than the distance between the second rotating shaft 8 and the valve plate 3. That is, the valve plate 3 is turned toward the side of the barrel 2 where the second rotating shaft 8 is located (such as Figure 2At this time, the connection positions of the active rod 601, the driven rod 602 and the valve plate 3 on the connecting arm 4 are arranged in the length direction in the order of the first hinge axis 9, the second hinge axis 10 and the connection point between the valve plate 3 and the connecting arm 4. Therefore, in the process of opening the valve plate 3, the lower end of the connecting arm 4 gradually deflects from the central axis of the barrel 2 to the side where the second rotating shaft 8 is located until it approaches the horizontal state, thereby achieving the following state: when the discharge port 201 is in a fully open state, the second hinge axis 10 is located between the first hinge axis 9 and the valve plate 3; when the discharge port 201 is in a closed state, the first hinge axis 9 is located directly above the second hinge axis 10.

[0038] In the preferred embodiment of the utility model, when the discharge port 201 is in a fully open state, the connecting arm 4 is in a horizontal state, and the valve plate 3 is parallel to the central axis of the barrel 2. That is, between the states of opening and closing the discharge port 201, the connecting arm 4 needs to switch between the horizontal and vertical states. To achieve this state, the length of the active rod 601 and the driven rod 602 and the position relationship of the first rotating shaft 7 and the second rotating shaft 8 need to be coordinated. In an optional embodiment, the distance between the first rotating shaft 7 and the second rotating shaft 8 is less than the sum of the rotation radius of the driven rod 602 and the rotation radius of the active rod 601. The specific principle is as follows Figure 3 As shown, the active rod 601 is located on the left side of the driven rod 602, and there are two intersection points 12 in the rotation paths of the active rod 601 and the driven rod 602 (the dotted line in the figure represents the rotation path), and the line connecting the two intersection points 12 is vertical. When the discharge port 201 is opened, the first hinge shaft 9 is located directly to the left of the second hinge shaft 10 (as shown in FIG. Figure 2 As shown), when the discharge port 201 is closed, the second hinge axis 10 is located at the lower intersection 12, and the first hinge axis 9 is located at the upper intersection 12 (as shown). Figure 3 as shown).

[0039] The active rod 601 is an active component, and the driven rod 602 is a driven component. The rotation radius of the driven rod 602 is preferably smaller than the rotation radius of the active rod 601. At this time, the active rod 601 has a larger movement range and can withstand a larger torque.

[0040] The connecting arm 4 can be hinged on one side of the active rod 601 and the driven rod 602. In order to ensure the connection strength, in a preferred embodiment, Figure 4 As shown, one end where the active rod 601 and the driven rod 602 are hinged to the connecting arm 4 is provided with a U-shaped notch 11 , and the connecting arm 4 can be inserted into the U-shaped notch 11 .

[0041] The barrel 2 of the utility model does not have any fasteners, thereby eliminating the risk of metal parts falling off; the hinge points in the connecting rod assembly 6 can use non-metallic pins, and there is almost no foreign body interference during long-term use.

[0042] The working principle of this utility model:

[0043] In the initial state, if Figure 3 As shown, the valve plate 3 closes the discharge port 201, the driving cylinder 501 is in the extended locked state, and the first hinge shaft 9 is located directly above the second hinge shaft 10. When the discharge port 201 needs to be opened, the driving cylinder 501 is started to retract the telescopic rod, driving the Figure 3 The first rotating shaft 9 in the middle rotates clockwise, the first hinge shaft 9 moves downward clockwise, and in order to coordinate the action of the connecting arm 4, the second hinge shaft 10 moves downward counterclockwise slowly, and the inclination angle of the connecting arm 4 with the vertical direction gradually increases, so that the valve plate 3 turns to the right side until it reaches Figure 2 On the contrary, when the discharge port 201 needs to be closed again, the cylinder 501 is driven to move in the reverse direction.

[0044] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "axial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] Furthermore, the terms “first”, “second”, etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

[0046] In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments.

[0047] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A wear-free flap valve, characterized in that: The valve comprises a valve body (1), a barrel (2) located in the valve body (1), and a valve plate (3) and a connecting arm (4) located between the barrel (2) and the valve body (1); a conical hopper (101) is provided below the valve body (1), and the valve plate (3) and the connecting arm (4) are vertically connected; the valve plate (3) is driven to rotate by the connecting arm (4), thereby opening or closing the discharge port (201) of the barrel (2); When the discharge port (201) is in a fully open state, the valve plate (3) is located on one side of the barrel (2); when the valve plate (3) switches between an open state and a closed state, the rotation center of the connecting arm (4) is offset along the axial direction of the barrel (2), so that the displacement of the valve plate (3) in the up and down directions is reduced, thereby limiting the movement range of the valve plate (3) to between the barrel (2) and the conical hopper (101).

2. The wear-free flap valve according to claim 1, characterized in that: The connecting arm (4) drives the valve plate (3) to close the discharge port (201) vertically upward.

3. The wear-free flap valve according to claim 2, characterized in that: It also includes a driving assembly (5) and a connecting rod assembly (6), wherein the connecting rod assembly (6) includes an active rod (601) and a driven rod (602), the active rod (601) is driven to rotate by the driving assembly (5), one end of the active rod (601) and the driven rod (602) are both hinged to the connecting arm (4), and the other end of the driven rod (602) is hinged to a fixed shaft.

4. The wear-free flap valve according to claim 3, characterized in that: The active rod (601) and the driven rod (602) are located between the valve body (1) and the barrel (2); a first rotating shaft (7) and a second rotating shaft (8) arranged in parallel are connected inside the valve body (1); the first rotating shaft (7) is circumferentially fixed to the active rod (601) and the driving assembly (5); and the second rotating shaft (8) is connected to the driven rod (602).

5. The wear-free flap valve according to claim 4, characterized in that: When the discharge port (201) is in a fully open state, the distance between the first rotating shaft (7) and the valve plate (3) is greater than the distance between the second rotating shaft (8) and the valve plate (3).

6. The wear-free flap valve according to claim 5, characterized in that: The rotation radius of the driven rod (602) is smaller than the rotation radius of the active rod (601).

7. The wear-free flap valve according to claim 5, characterized in that: When the discharge port (201) is in a fully open state, the hinge axis between the driven rod (602) and the connecting arm (4) is located between the hinge axis between the active rod (601) and the connecting arm (4) and the valve plate (3); when the discharge port (201) is in a closed state, the hinge axis between the active rod (601) and the connecting arm (4) is located directly above the hinge axis between the driven rod (602) and the connecting arm (4).

8. The wear-free flap valve according to claim 5, characterized in that: When the discharge port (201) is in a fully open state, the connecting arm (4) is in a horizontal state.

9. The wear-free flap valve according to claim 8, characterized in that: The distance between the first rotating shaft (7) and the second rotating shaft (8) is smaller than the sum of the rotation radius of the driven rod (602) and the rotation radius of the active rod (601).

10. The wear-free flap valve according to claim 5, characterized in that: The driving assembly (5) comprises a driving cylinder (501) and a swing arm (502), wherein two ends of the swing arm (502) are respectively connected to the driving cylinder (501) and the first rotating shaft (7), and the driving cylinder (501) is rotationally connected to the valve body (1).

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