Valve device

Abstract

The utility model discloses a valve device which comprises a valve plate and a control mechanism for controlling the valve plate to be opened and closed. The valve plate is installed on the valve port through the auxiliary rotating shaft so that the valve plate can be opened and closed on the valve port in a shaking mode, the end, close to the auxiliary rotating shaft, of the valve plate is a near-shaft end, and the end, away from the auxiliary rotating shaft, of the valve plate is a far-shaft end. The control mechanism comprises a main rotating shaft and a connecting rod, a rocker arm is arranged on the main rotating shaft, one end of the connecting rod is hinged and matched with the rocker arm, and the other end of the connecting rod is hinged and matched with the far-shaft end of the valve plate; when the main rotating shaft is driven by the power device to rotate, the rocker arm and the connecting rod push-pull the valve plate to shake; when the valve plate is attached to the valve port in a closed mode, the rocker arm and the connecting rod are located on the same straight line. According to the utility model, the opening and closing of a large valve can be realized by a power device with lower power.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to a valve device. Background Art

[0002] For large-scale blanking equipment, the larger the blanking valve of the equipment, the heavier the weight, so the cylinder used to push the valve to open and close needs a greater thrust. In traditional blanking valves, the cylinder mostly directly drives the valve shaft to rotate. This driving method requires higher cylinder thrust, and under this driving method, the force on both ends of the valve is uneven, and the valve is prone to leakage. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a valve device that can open and close a large valve with a relatively low-power power device.

[0004] Technical solution: To achieve the above-mentioned purpose, the utility model provides a valve device, including a valve plate and a control mechanism for controlling the opening and closing of the valve plate; the valve plate is installed on the valve port through a secondary rotating shaft, so that the valve plate can be shaken and opened and closed on the valve port, and the end of the valve plate close to the secondary rotating shaft is the proximal end, and the end away from the secondary rotating shaft is the distal end; the control mechanism includes a main rotating shaft and a connecting rod, a rocker arm is provided on the main rotating shaft, one end of the connecting rod is hingedly matched with the rocker arm, and the other end of the connecting rod is hingedly matched with the distal end of the valve plate; when the main rotating shaft is driven to rotate by a power device, the valve plate is pushed and pulled to shake by the rocker arm and the connecting rod.

[0005] Furthermore, when the valve plate is closed on the valve port, the rocker arm and the connecting rod are in the same straight line.

[0006] Furthermore, the rocker arm is in the shape of a plate, and a slot is provided at one end of the connecting rod connected to the rocker arm, and the outer end of the rocker arm is inserted into the slot; the connecting lock pin passes through the outer end of the rocker arm and the slot wall, so that the connecting rod and the rocker arm are hinged with the connecting lock pin as the axis.

[0007] Furthermore, the rocker arm is vertically mounted on the main shaft.

[0008] Furthermore, the side of the valve plate facing away from the valve port is the back, and a rib plate is provided on the back of the valve plate; a slot is provided at one end of the connecting rod connected to the valve plate, and the rib plate is correspondingly inserted into the slot; the connecting lock needle passes through the rib plate and the slot wall, so that the connecting rod and the valve plate are hinged with the connecting lock needle as the axis.

[0009] Furthermore, an axial hole is provided on the rib plate, and the secondary rotating shaft is passed through the axial hole of the rib plate, so that the valve plate can swing around the secondary rotating shaft.

[0010] Furthermore, a plurality of connecting rods are provided between the auxiliary rotating shaft and the main rotating shaft, and transmission is performed through the plurality of connecting rods.

[0011] Furthermore, support plates are respectively provided on both sides of the valve port, and the auxiliary rotating shaft and the main rotating shaft are both rotatably mounted on the support plates.

[0012] Furthermore, the power device includes rotating cylinders installed on the two side support plates, the two rotating cylinders are respectively connected to the two ends of the main rotating shaft, and the two rotating cylinders synchronously drive the main rotating shaft to rotate.

[0013] Beneficial effects: In the valve device of the utility model, the rotary cylinder pushes and pulls the valve through the main shaft, the rocker arm and the connecting rod to drive the valve to rock open and close; the connecting rod is connected to the far axis end of the valve to form a labor-saving mechanism, so that the rotary cylinder can push the larger valve plate to open and close with a smaller thrust, and the force on both ends of the valve plate is more even, and local leakage is less likely to occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 It is the overall schematic diagram when the valve is closed;

[0015] Attached Figure 2 It is a connection diagram of the rocker arm and the connecting rod when the valve is closed;

[0016] Attached Figure 3 This is the overall schematic diagram when the valve is open;

[0017] Attached Figure 4 This is a schematic diagram of the connection between the rocker arm and the connecting rod when the valve is open. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] As attached Figures 1 to 4 The valve device comprises a valve port, a valve plate 1, and a control mechanism for controlling the opening and closing of the valve plate 1 on the valve port. The valve plate 1 is mounted on the valve port through a secondary rotating shaft 2, so that the valve plate 1 can be swung open and closed on the valve port. For the convenience of subsequent description, the end of the valve plate 1 close to the secondary rotating shaft 2 is called the proximal end 3, and the end of the valve plate 1 away from the secondary rotating shaft 2 is called the distal end 4.

[0020] The control mechanism includes a main rotating shaft 5 and a connecting rod 6. A rocker arm 7 is arranged on the main rotating shaft 5. When the main rotating shaft 5 rotates, the rocker arm 7 is driven to rock. One end of the connecting rod 6 is hinged to the rocker arm 7, and the other end of the connecting rod 6 is hinged to the distal end 4 of the valve plate 1. When the main rotating shaft 5 is driven to rotate by the power device, the main rotating shaft 5 pushes and pulls the valve plate 1 to rock through the rocker arm 7 and the connecting rod 6. In traditional valve devices, the power device generally directly drives the secondary rotating shaft 2 to rotate, so the power device requires a large amount of power. In the utility model, the power device drives the main rotating shaft 5 to rotate, and the main rotating shaft 5 is connected to the distal end 4 of the valve through the rocker arm 7 and the connecting rod 6 to play the role of a labor-saving machine. The thrust required by the power device to push the valve plate 1 to open and close is small, so the valve device of the utility model is more suitable for large equipment.

[0021] In addition, if the power device directly drives the secondary rotating shaft 2 to rotate, the distal end 4 of the valve plate 1 is subjected to less force, and leakage is likely to occur at the distal end 4 of the valve plate 1. In the present invention, since the force of the power device acts on the distal end 4 of the valve plate 1, the force on the valve plate 1 is more uniform, and local leakage is less likely to occur.

[0022] As attached Figure 1 As shown in , when the valve plate 1 is closed on the valve port, the rocker arm 7 and the connecting rod 6 are in the same straight line, so that the rocker arm 7 and the connecting rod 6 can better press the valve plate 1 against the valve port, and the valve plate 1 is more stable when closing the valve port.

[0023] As attached Figure 2 and 4 As shown in the figure, the rocker arm 7 is in the shape of a plate, and the rocker arm 7 is vertically mounted on the main shaft 5. When the rocker arm 7 and the connecting rod 6 are in the same straight line, the valve plate 1 can close the valve port more stably. A slot 8 is provided at one end of the connecting rod 6 connected to the rocker arm 7, and the end of the rocker arm 7 away from the main shaft 5 is the outer end, and the outer end of the rocker arm 7 is correspondingly inserted into the slot 8. The outer end of the rocker arm 7 and the slot wall of the slot 8 are provided with a plug hole, and the connecting lock pin 9 passes through the outer end of the rocker arm 7 and the slot wall of the slot 8 from the plug hole, so that the connecting rod 6 and the rocker arm 7 are hinged and matched with the connecting lock pin 9 as the axis. Limiting blocks are provided at both ends of the connecting lock pin 9 to prevent the connecting lock pin 9 from slipping off.

[0024] The side of the valve plate 1 facing away from the valve port is the back, and a rib plate 10 is provided on the back of the valve plate 1. A slot 8 is provided at the end of the connecting rod 6 connected to the valve plate 1, and the end of the rib plate 10 away from the secondary shaft 2 is correspondingly inserted into the slot 8. Plug holes are provided on the groove walls of the rib plate 10 and the slot 8, and the connecting lock pin 9 passes through the rib plate 10 and the groove wall of the slot 8 through the plug hole, so that the connecting rod 6 and the valve plate 1 are hinged with the connecting lock pin 9 as the axis. In addition, the rib plate 10 also has the function of strengthening the strength of the valve plate 1. An axial hole is provided on the rib plate 10, and the secondary shaft 2 is inserted into the axial hole of the rib plate 10, so that the valve plate 1 can shake around the secondary shaft 2.

[0025] A plurality of connecting rods 6 are arranged between the secondary rotating shaft 2 and the main rotating shaft 5, and transmission is performed through the plurality of connecting rods 6, so that the distal end 4 of the valve plate 1 has more stress points, the valve plate 1 is more evenly stressed, and the valve can fit more closely on the valve port. Accordingly, a plurality of rib plates 10 and rocker arms 7 are also arranged to cooperate with the plurality of connecting rods 6.

[0026] As attached Figure 1 In one embodiment shown in , support plates 11 are respectively provided on both sides of the valve port, and the auxiliary shaft 2 and the main shaft 5 are both rotatably mounted on the support plates 11. The power device includes rotary cylinders mounted on the support plates 11 on both sides, which are respectively a first rotary cylinder 12 and a second rotary cylinder 13. The first rotary cylinder 12 and the second rotary cylinder 13 are respectively connected to both ends of the main shaft 5 to synchronously drive the main shaft 5 to rotate. Since there are two rotary cylinders, when applied to a large valve device, the thrust required by a single rotary cylinder is smaller.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A valve device, characterized in that: The invention comprises a valve plate (1) and a control mechanism for controlling the opening and closing of the valve plate (1); the valve plate (1) is mounted on the valve port via a secondary rotating shaft (2), so that the valve plate (1) can be swung on the valve port to open and close, and the end of the valve plate (1) close to the secondary rotating shaft (2) is a proximal end (3), and the end away from the secondary rotating shaft (2) is a distal end (4); The control mechanism comprises a main rotating shaft (5) and a connecting rod (6); a rocker arm (7) is arranged on the main rotating shaft (5); one end of the connecting rod (6) is hingedly matched with the rocker arm (7); the other end of the connecting rod (6) is hingedly matched with the distal end (4) of the valve plate (1); when the main rotating shaft (5) is driven to rotate by a power device, the valve plate (1) is pushed and pulled to rock through the rocker arm (7) and the connecting rod (6).

2. A valve device according to claim 1, characterized in that: When the valve plate (1) is closed on the valve port, the rocker arm (7) and the connecting rod (6) are in the same straight line.

3. A valve device according to claim 1, characterized in that: The rocker arm (7) is in the shape of a plate. A slot (8) is provided at one end of the connecting rod (6) connected to the rocker arm (7). The outer end of the rocker arm (7) is inserted into the slot (8). The connecting lock pin (9) passes through the outer end of the rocker arm (7) and the slot wall of the slot (8), so that the connecting rod (6) and the rocker arm (7) are hingedly matched with the connecting lock pin (9) as an axis.

4. A valve device according to claim 3, characterized in that: The rocker arm (7) is vertically mounted on the main rotating shaft (5).

5. A valve device according to claim 1, characterized in that: The side of the valve plate (1) facing away from the valve port is the back, and the back of the valve plate (1) is provided with a rib plate (10); a slot (8) is provided at one end of the connecting rod (6) connected to the valve plate (1), and the rib plate (10) is correspondingly inserted into the slot (8); the connecting lock needle (9) passes through the rib plate (10) and the slot wall of the slot (8), so that the connecting rod (6) and the valve plate (1) are hingedly matched with the connecting lock needle (9) as the axis.

6. A valve device according to claim 5, characterized in that: The rib plate (10) is provided with an axial hole, and the auxiliary rotating shaft (2) is inserted into the axial hole of the rib plate (10), so that the valve plate (1) can swing around the auxiliary rotating shaft (2).

7. A valve device according to any one of claims 1 to 6, characterized in that: A plurality of connecting rods (6) are arranged between the auxiliary rotating shaft (2) and the main rotating shaft (5), and transmission is performed through the plurality of connecting rods (6).

8. A valve device according to claim 1, characterized in that: Support plates (11) are respectively arranged on both sides of the valve port, and the auxiliary rotating shaft (2) and the main rotating shaft (5) are both rotatably mounted on the support plates (11).

9. A valve device according to claim 8, characterized in that: The power device comprises rotating cylinders installed on two side support plates (11), the two rotating cylinders are respectively connected to the two ends of the main rotating shaft (5), and the two rotating cylinders synchronously drive the main rotating shaft (5) to rotate.

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