Flip valve

Abstract

The utility model discloses a flip valve and relates to the field of valves. The flap valve solves the problems that a sealing ring of an existing flap valve is poor in sealing effect due to the action of shearing force, and the flap is prone to abrasion due to the fact that materials make contact with the flap. The device comprises a first shell and a first flip valve, the first flip valve is mounted in the first shell and comprises a blanking pipe (1), two driving cylinders (2), two lever systems and a flip plate (7), and the two driving cylinders (2) are axially symmetrically mounted on the outer circumferential side wall of the blanking pipe (1) respectively. One end of each lever system is connected with the telescopic end of one driving air cylinder (2), the other end of each lever system is connected with a turning plate (7) located at the bottom of the discharging pipe (1), and the turning plate (7) is driven by the two lever systems to vertically slide downwards, then turn over outwards and be parallel to the axis of the discharging pipe (1). The blanking device is used for blanking.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a flip valve used for switching falling materials. Background Art

[0002] The existing flap valve has a rotating shaft at the discharge port, for example: the announcement number is CN211338018U, the patent name is a utility model patent for a high-temperature pellet double-layer ash discharge valve, which controls the flap by rotating the cam structure and cooperating with the crank arm. The rotation angle of the flap relative to the horizontal plane is 65 degrees. Although it can reduce the contact between the first valve body and the high-temperature pellets to a certain extent and reduce the impact force on the flap. Since the flap cannot swing out of the material flow range, the material will pass through the flap when it flows, causing the flap to wear.

[0003] Similarly, when powder or smaller granular materials fall, the materials will still pass through the flap, and the sealing position close to the rotating shaft will be compressed first when the flap is sealed with the feed pipe. At this time, the sealing ring at the distance has not yet deformed, and the sealing ring will be subjected to shear force during operation. Long-term operation will cause inconsistent deformation of the sealing ring, resulting in a decrease in the sealing effect.

[0004] In summary, the sealing ring of the existing flap valve is subjected to shear force, resulting in poor sealing effect, and the material contacts the flap, which easily causes the flap to wear. Utility Model Content

[0005] The utility model aims to solve the problems that the sealing ring of the existing flap valve is subjected to shear force, resulting in poor sealing effect, and the material contacts the flap, which easily causes the flap to wear, and further provides a flap valve.

[0006] The technical solution of the utility model is:

[0007] A flip cover valve comprises a first shell and a first flip cover valve, wherein the first flip cover valve comprises a drop tube, two driving cylinders, two lever systems and a flap, wherein the two driving cylinders are respectively axially symmetrically mounted on the outer circumferential side wall of the drop tube, one end of each lever system is connected to the telescopic end of a driving cylinder, and the other end of each lever system is connected to the flap located at the bottom of the drop tube, and the flap, driven by the two lever systems, first slides vertically downward and then flips outward and becomes parallel to the axis of the drop tube.

[0008] Furthermore, the drop tube includes a tube body, a connecting flange and a sealing gasket, the sealing gasket is sleeved on the lower outer wall of the tube body, and the lower edge of the sealing gasket extends out of the bottom end surface of the tube body, and the connecting flange is installed in the middle and upper part of the tube body.

[0009] Furthermore, each driving cylinder comprises a cylinder, a support and an articulated seat. The cylinder is obliquely mounted on the outer side wall of the blanking tube through the support, and the telescopic end of the cylinder is mounted with an articulated seat.

[0010] Furthermore, each lever system includes a main driving rod, a swing rod and a flap driving rod, one end of the main driving rod is connected to the hinged seat, the other end of the main driving rod is connected to one end of the swing rod, the other end of the swing rod is connected to one end of the flap driving rod whose initial state is vertical, and the other end of the flap driving rod is connected to the flap, wherein the main driving rod drives the swing rod to move to the right when the cylinder is extended, and the linkage flap driving rod slides downward in the vertical direction, thereby driving the flap to slide vertically downward; when the flap driving rod moves to the extreme position, it slides horizontally to the right until the flap is flipped outward and parallel to the axis of the blanking tube.

[0011] Preferably, the flap driving rod is provided with a sliding groove along its length direction.

[0012] Furthermore, the lever system also includes a sliding guide rod, which is radially mounted on the tube body and inserted into a sliding groove of the flap driving rod.

[0013] Furthermore, it also includes a connecting rod, through which the main driving rods in the two lever systems are connected.

[0014] Furthermore, it also includes two guide connecting plates, which are axially symmetrically installed on the flap, and the upper end of each guide connecting plate is connected to the lower end of the flap driving rod, and the lower end of each guide connecting plate is connected to the flap.

[0015] Preferably, the flap is in an "L" shape.

[0016] Furthermore, it also includes a second shell and a second flip valve. The second flip valve has the same structure as the first flip valve. The upper end of the drop pipe of the second flip valve is coaxially installed on the lower end surface of the first shell, and the second shell is coaxially mounted on the second flip valve.

[0017] Compared with the prior art, the utility model has the following effects:

[0018] 1. The utility model can drive the flap to slide vertically downward through the lever system, so that the flap is separated from the sealing gasket, and then drive the flap to flip sideways until the flap is parallel to the axis of the drop tube 1. This structural form can ensure that the flap is completely swung out of the material flow, avoiding contact and friction between the flap and the material flow, so that the flap is effectively prevented from being worn. In addition, the mechanical structure of the lever system avoids the problem of shear force or other friction forces being easily generated on the rotating shaft of the existing sealing gasket, thereby effectively extending the service life of the sealing gasket.

[0019] 2. When the utility model uses a single-layer flap valve (technical solutions recorded in specific implementations 1 to 9), the lever system is used to first lower the flap in the vertical direction, and then rotate it to the side of the drop pipe so that the material can flow out freely, effectively improving the discharge speed of the material flow. At the same time, due to the special opening and closing conditions of the flap, it is more pressure-resistant than the traditional flap valve, and is easy to withstand the accumulation of heavy materials. Therefore, the flap is completely rotated to the side of the drop pipe so that the material will not cause unnecessary wear on the flap when it flows.

[0020] 3. When the utility model uses a double-layer flap valve (the technical solution recorded in the specific implementation mode ten), the upper flap can be opened to place the material on the lower flap through the interlocking opening and closing conditions, and the upper flap valve is closed to balance the pressure difference between the discharge port and the feed port, and the lower flap valve is opened to transport the material to the next production process, and the lower flap valve is closed to balance the pressure difference between the discharge port and the feed port of the lower flap valve, and the material is transported in this cycle.

[0021] 4. The use of this embodiment can replace the air lock. Compared with the air lock, the double-layer flap valve does not have the problems of high temperature, large particle size, large flow rate, high pressure difference, etc., and will not be blocked, and there is almost no wear and tear, and there is no risk of external air entering the material container tank due to gap loss. In addition, the use of the double-layer flap valve is particularly suitable for the situation of high external pressure. The external high pressure will push the flap upward to make the seal more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of a single-layer flip cover valve when the flap of the utility model is in a closed state (the technical solutions recorded in specific implementation modes one to nine);

[0023] Figure 2 yes Figure 1 A schematic diagram of a structure in which the flap is in an open state;

[0024] Figure 3 It is a schematic diagram of the structure of the flap valve of the utility model when it is used in double layers (the technical solution recorded in the specific implementation method 10);

[0025] Figure 4 It is a schematic diagram of the opening and closing logic of the flap valve of the utility model when it is used in double layers;

[0026] Among them: 1. Dropping pipe, 1-1. Pipe body, 1-2. Connecting flange, 1-3. Sealing gasket, 2. Driving cylinder, 2-1. Cylinder, 2-2. Support, 2-3. Articulated seat, 3. Main driving rod, 4. Connecting rod 4, 5. Swinging rod, 6. Flap driving rod, 6-1. Slide groove, 7. Flap, 8. Upper shell, 9. Lower hopper, 10. Sliding guide rod, 11. Guide connecting plate. DETAILED DESCRIPTION

[0027] Specific implementation method 1: Combination Figure 1 to Figure 2 To illustrate this embodiment, this embodiment includes a first shell, which also includes a first flip cover valve, and the first flip cover valve is installed in the first shell, wherein the first flip cover valve includes a drop tube 1, two driving cylinders 2, two lever systems and a flap 7, and the two driving cylinders 2 are respectively axially symmetrically installed on the outer circumferential side walls of the drop tube 1, one end of each lever system is connected to the telescopic end of a driving cylinder 2, and the other end of each lever system is connected to the flap 7 located at the bottom of the drop tube 1, and the flap 7, driven by the two lever systems, first slides vertically downward and then flips outward and is parallel to the axis of the drop tube 1.

[0028] The first housing in this embodiment includes an upper housing 8 and a lower hopper 9, wherein the upper housing 8 is buckled onto the lower hopper 9 and connected by a plurality of bolts. The upper housing 8 is a housing with a rectangular cross-section, which can ensure the installation of the drop tube 1 and provide installation space for the installation of two driving cylinders 2 and two lever systems. The upper cross-section of the lower hopper 9 is a rectangular housing, which is convenient for matching and connecting with the lower end of the upper housing 8. The lower part of the lower hopper 9 is a funnel with a gradually reduced diameter, which is convenient for connecting with the upper end of the drop tube 1 in the double-layer flap valve.

[0029] The flap 7 in this embodiment is sealedly connected to the lower end surface of the blanking tube 1 .

[0030] Specific implementation method 2: Combination Figure 1 to Figure 2 To illustrate this embodiment, the drop tube 1 of this embodiment includes a tube body 1-1, a connecting flange 1-2 and a sealing gasket 1-3. The sealing gasket 1-3 is mounted on the lower outer wall of the tube body 1-1, and the lower edge of the sealing gasket 1-3 extends out of the bottom end surface of the tube body 1-1. The connecting flange 1-2 is installed in the middle and upper part of the tube body 1-1.

[0031] With such arrangement, the lower edge of the sealing gasket 1-3 extends out of the bottom end surface of the tube body 1-1, and when the flap 7 contacts the sealing gasket 1-3, the sealing effect can be improved. Moreover, the flap 7 in this embodiment contacts the lower end surface of the sealing gasket 1-3 at the same time, avoiding the problem of the sealing gasket on the side of the flap axis end being easily sheared when the existing flap is flipped with one end as the axis. In addition, the connecting flange 1-2 is convenient for connecting with the upper end of the upper shell 8, so as to realize the positioning and fixing of the entire flap valve. The other components and connection relationships are the same as those of the first embodiment.

[0032] Specific implementation method three: Combination Figure 1 to Figure 2 To illustrate this embodiment, each driving cylinder 2 of this embodiment includes a cylinder 2-1, a support 2-2 and an articulated seat 2-3. The cylinder 2-1 is obliquely installed on the outer wall of the drop tube 1 through the support 2-2, and the telescopic end of the cylinder 2-1 is installed with the articulated seat 2-3.

[0033] In this way, the cylinder 2-1 is preferably tilted in a way that the left side is low and the right side is high when it is actually used. This arrangement provides an effective action space for the linkage of the lever system and can also ensure the accuracy of the power source of the lever system. The other components and connection relationships are the same as those of the specific implementation method one or two.

[0034] Specific implementation method four: Combination Figure 1 to Figure 2 To illustrate the present embodiment, each lever system of the present embodiment includes a main driving rod 3, a swing rod 5 and a flap driving rod 6, one end of the main driving rod 3 is connected to the hinge seat 2-3, the other end of the main driving rod 3 is connected to one end of the swing rod 5, the other end of the swing rod 5 is connected to one end of the flap driving rod 6 which is initially in a vertical state, and the other end of the flap driving rod 6 is connected to the flap 7, wherein the main driving rod 3 drives the swing rod 5 to move to the right when the cylinder 2-1 is extended, and the linkage flap driving rod 6 slides downward in the vertical direction, thereby driving the flap 7 to slide vertically downward; when the flap driving rod 6 moves to the extreme position, it slides horizontally to the right until the flap 7 is flipped outward and is parallel to the axis of the blanking tube 1.

[0035] With such arrangement, two actions are realized at the same time by using the lever principle, one is the vertical downward sliding action of the flap 7, and the other is the flipping action of the flap 7 to the outside of the material drop tube 1. These two actions make the flap 7 completely separated from the discharge port side of the material drop tube 1, which not only avoids the friction between the material flow and the wear of the flap, but also avoids the problem that the sealing gasket is susceptible to shear force, killing two birds with one stone. The other components and connection relationships are the same as any one of the specific embodiments one to three.

[0036] Specific implementation method five: Combination Figure 1 to Figure 2To explain this embodiment, the flap driving rod 6 of this embodiment is provided with a slide groove 6-1 along its length direction. Such a configuration facilitates the flap driving rod 6 to realize vertical sliding action, driving the flap 7 to realize vertical downward sliding and separate from the sealing pad. Other components and connection relationships are the same as any one of the specific embodiments 1 to 4.

[0037] Specific implementation method six: Combination Figure 1 to Figure 2 To explain this embodiment, the lever system of this embodiment further includes a sliding guide rod 10 , which is radially mounted on the tube body 1 - 1 and inserted into the slide groove 6 - 1 of the flap driving rod 6 .

[0038] In this way, the sliding guide rod 10 can not only slide the flap driving rod 6, but also limit the flap driving rod 6, especially the length setting of the slide groove 6-1. When the upper part of the slide groove 6-1 slides to the limit position, the top end of the flap driving rod 6 and the end of the swing rod 5 rotate until the flap driving rod 6 turns to a horizontal state. Other components and connection relationships are the same as any one of the specific embodiments 1 to 5.

[0039] Specific implementation method seven: Combination Figure 1 to Figure 2 This embodiment further includes a connecting rod 4, and the main driving rods 3 in the two lever systems are connected by the connecting rod 4. In this way, the two lever systems can be connected at the same time, which is convenient for ensuring the uniformity of the actions between the two lever systems. The other components and connection relationships are the same as any one of the specific embodiments 1 to 6.

[0040] Specific implementation method eight: Combination Figure 1 to Figure 2 This embodiment further includes two guide connecting plates 11, which are axially symmetrically mounted on the flap 7, and the upper end of each guide connecting plate 11 is connected to the lower end of the flap driving rod 6, and the lower end of each guide connecting plate 11 is connected to the flap 7. This arrangement facilitates the connection between the flap driving rod 6 and the flap 7. Other components and connection relationships are the same as any one of the specific embodiments 1 to 7.

[0041] Specific implementation method nine: Combination Figure 1 to Figure 2 To explain this embodiment, the flap 7 of this embodiment is in an "L" shape. This arrangement is simple in structure, easy to implement, and saves space. Other components and connection relationships are the same as any one of the specific embodiments 1 to 8.

[0042] Specific implementation method ten: Combination Figure 3 to Figure 4This embodiment is described. This embodiment also includes a second shell and a second flip valve. The second flip valve has the same structure as the first flip valve. The upper end of the drop pipe 1 of the second flip valve is coaxially mounted on the lower end surface of the first shell, and the second shell is coaxially mounted on the second flip valve. In this way, the double-layer flap valve can open the upper flap through the interlocking opening and closing conditions to put the material into the lower flap valve. The upper flap valve is closed to balance the pressure difference between the drop port and the feed port. The lower flap valve is opened to transport the material to the next production process. The lower flap valve is closed to balance the pressure difference between the drop port and the feed port of the lower flap valve, and the material is transported in a cycle. This use method can replace the air lock. At the same time, compared with the air lock, there is no problem of high temperature, large particle size, large flow rate, high pressure difference, etc. when using the double layer. At the same time, there is no blockage, almost no wear, and the risk of external air entering the material container tank caused by gap loss. At the same time, the double layer is particularly suitable for the situation of high external pressure. The external high pressure will push the flap upward to make the seal more reliable. The other components and connection relationships are the same as any one of the specific implementation modes 1 to 9.

[0043] Combination Figures 1 to 4 Explain the working principle of the utility model:

[0044] The drop tube 1 is fixed to the upper shell 8 by connecting flange 1-2 and bolts, and a sealing gasket 1-3 is installed at the lower end of the drop tube 1. The sealing gasket 1-3 can be sealed with the flap 7, so as to realize the sealing of the drop tube 1 so that the material is closed at the upper end of the drop tube 1. The driving cylinder 2 is fixed to the upper shell 8 by the support 2-2 and connecting bolts, and the front end of the driving cylinder 2 is connected to the main driving rod 3 by the hinge seat 2-3. When the valve needs to be opened, the driving cylinder 2 extends out through the hinge seat 2-3 to push the main driving rod 3 to drive the connecting rod 4 to rotate and convert the linear motion into rotational motion. When the connecting rod 4 rotates, the swing rod 5 will rotate accordingly, and the swing rod 5 will rotate through the hinge seat 2-3. The hinge point drives the flap drive rod 6 to move. The flap drive rods 6 in the two lever systems are respectively arranged at both ends of the connecting rod 4 to ensure that the rotational driving force can be synchronously transmitted to the flap 7. The flap drive rod 6 mechanically slides and rotates on the upper shell 8 and the swing rod 5 through two hinge points, which will cause the flap 7 to move downward first and then disengage from the sealing gasket 1-3 before rotating. At the same time, the flap 7 is completely swung to the outside of the drop tube 1 without contacting the material flow. The flap 7 is connected to the flap drive rod 6 through two guide connecting plates 7. To ensure the flatness of the flap 7, the two guide connecting plates 7 are respectively arranged on both sides of the flap 7 and are connected to the flap drive rod 6 at the same time.

[0045] When it needs to be closed, the driving cylinder 2 is retracted to pull the main driving rod 3 through the hinge seat 2-3 to drive the connecting rod 4 to rotate and convert the linear motion into rotational motion. When the connecting rod 4 rotates, the swing rod 5 will rotate accordingly, and the swing rod 5 will drive the flap driving rod 6 to move through the hinge point. The two flap driving rods 6 are respectively arranged at both ends of the connecting rod 4 to ensure that the rotational driving force can be synchronously transmitted to the flap 7. The flap driving rod 6 performs mechanical sliding and rotation movements on the upper shell 8 and the swing rod 5 through two hinge points, which will cause the flap 7 to rotate first, rotate to a position perpendicular to the blanking tube 1, and then perform an upward movement and press against the sealing gasket 1-3 for sealing. During the entire movement process, the flap 7 and the sealing gasket 1-3 are completely vertically sealed without excess shear force and friction, thereby ensuring the service life of the sealing gasket 1-3 and ensuring good sealing.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flip-cover valve, comprising a first housing, characterized in that: The invention also comprises a first flip cover valve, which is installed in the first shell, wherein the first flip cover valve comprises a drop tube (1), two driving cylinders (2), two lever systems and a flap (7), and the two driving cylinders (2) are respectively axially symmetrically installed on the outer circumferential side wall of the drop tube (1). One end of each lever system is connected to the telescopic end of a driving cylinder (2), and the other end of each lever system is connected to a flap (7) located at the bottom of the drop tube (1). Driven by the two lever systems, the flap (7) first slides vertically downward and then flips outward and becomes parallel to the axis of the drop tube (1).

2. A flip cover valve according to claim 1, characterized in that: The drop pipe (1) comprises a pipe body (1-1), a connecting flange (1-2) and a sealing gasket (1-3). The sealing gasket (1-3) is sleeved on the lower outer wall of the pipe body (1-1), and the lower edge of the sealing gasket (1-3) extends out of the bottom end surface of the pipe body (1-1). The connecting flange (1-2) is installed in the middle and upper part of the pipe body (1-1).

3. A flip cover valve according to claim 2, characterized in that: Each driving cylinder (2) comprises a cylinder (2-1), a support (2-2) and an articulated seat (2-3); the cylinder (2-1) is obliquely mounted on the outer side wall of the drop tube (1) via the support (2-2); and the articulated seat (2-3) is mounted on the telescopic end of the cylinder (2-1).

4. The flip cover valve according to claim 3, characterized in that: Each lever system comprises a main drive rod (3), a swing rod (5) and a flap drive rod (6). One end of the main driving rod (3) is connected to the hinge seat (2-3), the other end of the main driving rod (3) is connected to one end of the swing rod (5), the other end of the swing rod (5) is connected to one end of the flap driving rod (6) whose initial state is a vertical state, and the other end of the flap driving rod (6) is connected to the flap (7). When the cylinder (2-1) is extended, the main driving rod (3) drives the swing rod (5) to move to the right, and the flap driving rod (6) is linked to slide downward in the vertical direction, thereby driving the flap (7) to slide vertically downward; When the flap driving rod (6) moves to the limit position, it slides horizontally to the right until the flap (7) is turned outward and parallel to the axis of the drop tube (1).

5. The flip cover valve according to claim 4, characterized in that: The flap driving rod (6) is provided with a sliding groove (6-1) along its length direction.

6. The flip cover valve according to claim 5, characterized in that: The lever system also includes a sliding guide rod (10), which is radially mounted on the tube body (1-1) and inserted into a sliding groove (6-1) of the flap driving rod (6).

7. The flip cover valve according to claim 6, characterized in that: It also includes a connecting rod (4), through which the main driving rods (3) in the two lever systems are connected.

8. The flip cover valve according to claim 7, characterized in that: It also includes two guide connecting plates (11), which are axially symmetrically mounted on the flap (7), and the upper end of each guide connecting plate (11) is connected to the lower end of the flap driving rod (6), and the lower end of each guide connecting plate (11) is connected to the flap (7).

9. The flip cover valve according to claim 8, characterized in that: The flap (7) is in an "L" shape.

10. The flip cover valve according to claim 9, characterized in that: It also comprises a second housing and a second flip valve. The second flip valve has the same structure as the first flip valve. The upper end of a drop pipe (1) of the second flip valve is coaxially mounted on the lower end surface of the first housing. The second housing is coaxially sleeved on the second flip valve.

Images