A swing type electric regulating valve and control method thereof

Abstract

The present invention discloses a swing-type electric regulating valve and a control method thereof. The swing-type electric regulating valve comprises a valve body, a valve plate installed inside the valve body, a swing assembly driving the valve plate to swing circumferentially, a sealing assembly driving the valve plate to move axially, and a power source. The power source drives the first gear and the gear shaft to rotate, thereby driving the valve plate to swing in the valve body to achieve flow regulation of the regulating valve: when the valve plate is in a closed state, the power source drives the second gear and the turntable to rotate, so that the support block applies an upward supporting force to the guide rod, thereby causing the guide rod and the clamping ring connected thereto to move upward; thereby squeezing the valve plate upward, causing it to fit tightly against the inner wall of the valve body, and achieving sealing cutoff of the regulating valve. The above-mentioned swing-type electric regulating valve has a stable and reliable structure, does not involve other power sources such as pneumatics, and saves high maintenance costs.

Description

Technical Field

[0001] The present invention relates to the technical field of electric regulating valves, and in particular to a swing type electric regulating valve and a control method thereof. Background Art

[0002] The regulating valve is an important component of the industrial automation system. It is installed on the pipeline to adjust the pressure and flow by adjusting the opening. For high-end product production industries such as semiconductors, there are high requirements for regulation accuracy. At the same time, the medium is often corrosive and radioactive harmful gases, which requires the regulating valve to have good sealing performance, precise regulation performance and reliable shut-off performance. In order to obtain the above performance, most of the existing products on the market use pneumatics to achieve the shut-off and opening of the swing valve.

[0003] However, the air source stability of the pneumatic control valve is directly related to the shutoff sealing performance or regulation performance. In some occasions where the shutoff or regulation accuracy is required to be high, or when the power source fails and the valve needs to maintain the current state, the air source performance is not easy to meet the requirements, so electric valves will be preferred.

[0004] Furthermore, in some occasions, it is necessary to replace the old electric valve with a new swing valve, but there is no air source on site or it is impossible to add an air circuit, so pneumatic valves cannot be used and only electric solutions can be used.

[0005] Therefore, it is necessary to find an electrically driven pendulum valve structure. Summary of the invention

[0006] The purpose of the present invention is to provide a swing type electric regulating valve to solve the technical defects in the prior art.

[0007] Another object of the present invention is to provide a control method for the above-mentioned swing type electric control valve.

[0008] The technical solution adopted to achieve the purpose of the present invention is:

[0009] A swing type electric regulating valve comprises a valve body, a valve plate installed inside the valve body, a swing assembly for driving the valve plate to swing circumferentially, a sealing assembly for driving the valve plate to move axially, and a power source;

[0010] The swing assembly includes a first gear mounted on the driving shaft of the power source and rotating with the driving shaft and a gear shaft rotating synchronously with the first gear; the valve plate is rigidly connected to the gear shaft and swings circumferentially with the rotation of the gear shaft, thereby controlling the flow rate of the regulating valve;

[0011] The sealing assembly includes a second gear mounted on the driving shaft of the power source, a rotary disk meshing with the second gear, a plurality of support blocks circumferentially distributed on the rotary disk, a clamping ring mounted inside the valve body, and guide rods arranged and mounted below the clamping ring;

[0012] The rotary disc is mounted on the flange via a bearing; the flange is fixedly mounted on the valve body;

[0013] The clamping ring is located below the valve plate; the clamping ring is installed inside the valve body through a support seat;

[0014] The guide rod and the support block cooperate to drive the clamping ring to move upward, thereby squeezing the valve plate upward to achieve sealing cutoff.

[0015] In the above technical solution, a through hole is opened on the left side of the valve body, and its upper surface is the valve body hole; the lower surface is the flange hole; and a first shaft hole for the gear shaft to pass through is opened on the upper right side of the valve body.

[0016] In the above technical solution, a swing cavity is provided above the inside of the valve body; the valve plate is located inside the swing cavity; the gear shaft passes through the first rotating shaft hole and is connected to the valve plate in the swing cavity;

[0017] A transmission chamber is provided at the lower interior of the valve body; the rotary disk and the second gear are provided in the transmission chamber; the drive shaft meshes with the second gear in the transmission chamber; and the second gear meshes and transmits with the rotary disk in the transmission chamber.

[0018] In the above technical solution, a limiting step is provided on the side wall of the through hole between the swing cavity and the transmission cavity; and the support seat is placed on the limiting step.

[0019] In the above technical solution, a first sealing ring is installed on the clamping ring; and a second sealing ring is installed on the upper surface of the valve plate.

[0020] In the above technical solution, a return spring is mounted on the gear shaft.

[0021] In the above technical solution, the sealing component also includes a reset component;

[0022] The reset assembly includes a guide sleeve, a guide plate, a spring and a guide rod step; each guide sleeve is sleeved on each guide rod; the spring is sleeved on the guide rod and is located above the guide rod step; the spring is located inside the guide sleeve; the guide plate is placed in the guide sleeve and is located between the spring and the guide rod step.

[0023] In the above technical solution, a roller is installed at the bottom end of the guide rod.

[0024] In the above technical solution, the power source includes a motor, a first clutch and a second clutch;

[0025] The first clutch and the second clutch are respectively mounted at the upper and lower ends of the driving shaft of the motor;

[0026] The first clutch controls the connection or disconnection between the drive shaft and the first gear;

[0027] The second clutch controls connection or disconnection of the drive shaft with the second gear.

[0028] In the above technical solution, the power source includes a first motor and a second motor;

[0029] The driving shaft of the first motor is connected to the first gear, driving the first gear to rotate, thereby driving the valve plate to swing;

[0030] The driving shaft of the second motor is meshed with the second gear to drive the second gear and the rotary disk to rotate, thereby driving the valve plate to move axially.

[0031] In another aspect of the present invention, in the control method of the swing type electric regulating valve, the power source drives the first gear and the gear shaft to rotate, thereby driving the valve plate to swing in the valve body to achieve flow regulation of the regulating valve:

[0032] When the valve plate is in a closed state, the power source drives the second gear and the turntable to rotate, so that the support block applies an upward supporting force to the guide rod, thereby causing the guide rod and the clamping ring connected thereto to move upward; thereby squeezing the valve plate upward so that it fits tightly against the inner wall of the valve body, thereby achieving a sealed shutoff of the regulating valve.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1. The swing type electric regulating valve provided by the present invention controls the swing of the valve plate and the axial movement of the clamping plate respectively through the swing assembly and the sealing assembly, thereby realizing the adjustment and sealing of the channel. The axial reset is realized by the spring device, and the structure is stable and reliable.

[0035] 2. The swing-type electric regulating valve provided by the present invention has a stable and reliable structure, does not involve other power sources such as pneumatics, and saves a lot of maintenance costs.

[0036] 3. The swing type electric regulating valve provided by the present invention can still be used to drive two sets of gear transmission mechanisms respectively by two motors in situations where the clutch structure or material is not allowed. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1The figure shows the internal structure schematic diagram of the swing type electric regulating valve;

[0038] Figure 2 The figure shows the internal structure schematic diagram of the swing type electric regulating valve;

[0039] Figure 3 Shown is a schematic diagram of the structure of the sealing assembly;

[0040] Figure 4 Shown is a schematic diagram of the structure of the reset component;

[0041] Figure 5 Shown is a top schematic diagram of the valve body;

[0042] Figure 6 Shown is a cross-sectional view of the valve body;

[0043] Figure 7 Shown is a schematic diagram of the installation of the power source in Example 2;

[0044] Figure 8 Shown is a schematic diagram of the power source installation of Example 3.

[0045] In the figure: 1-valve body, 1-1-valve body hole, 1-2-flange hole, 1-3-first rotating shaft hole, 1-4-second rotating shaft hole, 1-5-swing chamber, 1-6-transmission chamber, 1-7-limiting step, 2-valve plate, 3-first gear, 4-gear shaft, 5-reset spring, 6-turn plate, 7-support block, 8-pressure ring, 9-guide rod, 9-1-guide rod step, 10-second gear, 11-first sealing ring, 12-second sealing ring, 13-support seat, 14-guide sleeve, 15-guide plate, 16-spring, 17-roller, 18-bearing, 19-flange, 20-motor fixing seat, 21-controller. DETAILED DESCRIPTION

[0046] The present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] Example 1

[0048] A swing type electric regulating valve comprises a valve body 1, a valve plate 2, a swing component for driving the valve plate 2 to swing circumferentially, a sealing component for driving the valve plate 2 to move axially, and a power source;

[0049] The power source drives the valve plate 2 to swing circumferentially through the swing assembly to control the opening between the valve plate 2 and the valve body hole 1-1 on the valve body 1, thereby controlling the flow rate of the regulating valve. When the valve plate 2 completely covers the valve body hole 1-1, the valve plate 2 is in a closed state.

[0050] The power source drives the valve plate 2 to move axially up and down through the sealing assembly. When the valve plate 2 is in a closed state, the valve body 2 is driven to press the inner wall of the valve body 1 upward to completely seal the valve body hole 1-1, thereby realizing the cut-off of the regulating valve.

[0051] The swing assembly includes a first gear 3 installed on the driving shaft of the power source and rotating with the driving shaft, and a gear shaft 4 rotating synchronously with the first gear 3; the valve plate 2 is rigidly connected to the gear shaft 4, and swings circumferentially with the rotation of the gear shaft 4. In order to ensure the smooth swing of the valve plate 2 in the internal cavity of the valve body 1, there is a certain gap between the upper surface of the valve plate 2 and the inner wall of the valve body 1. When the valve plate 2 moves axially upward, the valve plate 2 fits tightly with the inner wall of the valve body 1 to achieve sealing. When the sealing is completed, in order to reset the valve plate 2 downward, a reset spring 5 is installed on the gear shaft 4 to drive the valve plate 2 downward and separate from the inner wall of the valve body 1.

[0052] The sealing assembly includes a second gear 10 installed on the driving shaft of the power source, a rotating disk 6 meshing with the second gear 10, a plurality of support blocks 7 circumferentially distributed on the rotating disk 6, a clamping ring 8 installed inside the valve body, and guide rods 9 arranged and installed below the clamping ring 8; the number of the support blocks 7 and the guide rods 9 are equal, and they are evenly distributed circumferentially, and each support block 7 corresponds to a guide rod 9. The clamping ring 8 is installed inside the valve body 1 through a support seat 13. The rotating disk 6 is installed on a flange 19 through a bearing 18; the flange 19 is fixedly installed on the valve body 1 to achieve relative fixation of the rotating disk 6 inside the valve body 1.

[0053] The driving shaft drives the second gear 10 and the rotating disk 6 to rotate, and the support block 7 rotates accordingly. When the support block 7 rotates to contact the lower end of the guide rod 9, an upward supporting force is applied to the guide rod 9, thereby causing the guide rod 9 and the clamping ring 8 connected thereto to move upward. The clamping ring 8 is located directly below the valve plate 2 (when the valve plate 2 is in a closed state). The clamping ring 8 moves upward, thereby squeezing the valve plate 2 upward, making it fit tightly against the inner wall of the valve body 1 to achieve sealing. In order to ensure the sealing effect, a first sealing ring 11 is installed on the clamping ring 8; a second sealing ring 12 is installed on the upper surface of the valve plate 2.

[0054] In order to facilitate the downward reset of the clamping ring 8 and the guide rod 9, the sealing assembly also includes a reset assembly; the reset assembly includes a guide sleeve 14, a guide plate 15, a spring 16 and a guide rod step 9-1; each guide sleeve 14 is sleeved on each guide rod 9; the spring 16 is sleeved on the guide rod 9 and is located above the guide rod step 9-1; the spring 16 is located inside the guide sleeve 14; the guide plate 15 is placed in the guide sleeve 14 and is located between the spring 16 and the guide rod step 9-1. The inner radius of the guide plate 15 is smaller than the outer radius of the guide rod step 9-1. When the guide rod 9 contacts the support block 7 and moves upward, the guide rod step 9-1 pushes the guide plate 15 upward, so that the spring 16 is compressed; when the guide rod 9 is separated from the support block 7, under the action of the spring 16, the clamping ring 8 and the guide rod 9 are reset downward.

[0055] In order to make the guide rod 9 and the support block 7 cooperate smoothly, a roller 17 is installed at the bottom of the guide rod 9. The upper surface of the support block 7 is a smooth curved surface, which makes the guide rod 9 have a smaller slope on one side to ensure smooth pushing, and a larger slope on the other side to make the guide rod 9 quickly reset.

[0056] The left side of the valve body 1 is provided with a through hole, the upper surface of which is the valve body hole 1-1; the lower surface is the flange hole 1-2; the upper right side of the valve body 1 is provided with a first shaft hole 1-3 for the gear shaft 4 to pass through. The lower right side of the valve body 1 is provided with a second shaft hole 1-4 (when a dual power source is used) for the drive shaft to pass through; the upper part of the valve body 1 is provided with a swing chamber 1-5; the valve plate 2 is located inside the swing chamber 1-3; the gear shaft 4 passes through the first shaft hole 1-3 and is connected with the valve plate 2 in the swing chamber 1-5. The lower part of the valve body 1 is provided with a transmission chamber 1-6; the rotary disk 6 is provided in the transmission chamber 1-6; the drive shaft passes through the second shaft hole 1-4 and meshes with the second gear 10 in the transmission chamber 1-6; the second gear 10 and the rotary disk 6 mesh and transmit in the transmission chamber 1-6. A limiting step 1-7 is provided on the side wall of the through hole between the swing cavity 1-3 and the transmission cavity 1-6; the support seat 13 is placed on the limiting step 1-7.

[0057] Example 2

[0058] This embodiment is based on the embodiment 1 and introduces its power source.

[0059] The power source includes a motor A, a clutch B1 and a clutch B2; the clutch B1 and the clutch B2 are respectively installed at the upper and lower ends of the drive shaft of the motor A. The clutch B1 controls the connection or disconnection of the drive shaft with the first gear 3; the clutch B2 controls the connection or disconnection of the drive shaft with the second gear 10.

[0060] The power source is also connected to a controller 21 ; the controller 21 can precisely control the rotation angle and step length of the motor A, and simultaneously control the on and off of the clutches B1 and B2 , thereby controlling the circumferential swing or axial sealing of the valve plate 2 .

[0061] Example 3

[0062] This embodiment is based on the embodiment 1 and introduces its power source.

[0063] In certain specific situations, the clutch structure or material is not allowed to exist, so a dual power source mode is also involved.

[0064] In this embodiment, two power sources are selected, including a first motor A1 and a second motor A2.

[0065] The first motor A1 is installed in the motor fixing seat 20 ; its driving shaft is connected to the first gear 3 , driving the first gear 3 to rotate, thereby driving the valve plate 2 to swing.

[0066] The driving shaft of the second motor A2 is meshed with the second gear 10 to drive the second gear 10 and the rotary disk 6 to rotate, thereby driving the valve plate 2 to move axially.

[0067] The controller 21 can precisely control the rotation angle and step length of the first motor A1 and the second motor A2, thereby controlling the circumferential swing or axial sealing of the valve plate 2.

[0068] 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 scope of protection of the present invention.

Claims

1. A swing type electric regulating valve, Features: It comprises a valve body, a valve plate installed inside the valve body, a swing assembly for driving the valve plate to swing circumferentially, a sealing assembly for driving the valve plate to move axially, and a power source; The swing assembly includes a first gear mounted on the driving shaft of the power source and rotating with the driving shaft and a gear shaft rotating synchronously with the first gear; the valve plate is rigidly connected to the gear shaft and swings circumferentially with the rotation of the gear shaft, thereby controlling the flow rate of the regulating valve; The sealing assembly includes a second gear mounted on the driving shaft of the power source, a rotary disk meshing with the second gear, a plurality of support blocks circumferentially distributed on the rotary disk, a clamping ring mounted inside the valve body, and guide rods arranged and mounted below the clamping ring; The rotary disc is mounted on the flange via a bearing; the flange is fixedly mounted on the valve body; The clamping ring is located below the valve plate; the clamping ring is installed inside the valve body through a support seat; The guide rod and the support block cooperate to drive the clamping ring to move upward, thereby squeezing the valve plate upward to achieve sealing cutoff; The sealing component also includes a reset component; The reset assembly includes a guide sleeve, a guide plate, a spring and a guide rod step; each guide sleeve is sleeved on each guide rod; the spring is sleeved on the guide rod and is located above the guide rod step; the spring is located inside the guide sleeve; the guide plate is placed in the guide sleeve and is located between the spring and the guide rod step.

2. The swing type electric regulating valve according to claim 1, Features: A through hole is provided on the left side of the valve body, the upper surface of which is a valve body hole; the lower surface is a flange hole; and a first rotating shaft hole for the gear shaft to pass through is provided on the upper right side of the valve body.

3. The swing type electric regulating valve according to claim 2, Features: A swing cavity is arranged above the inside of the valve body; the valve plate is located inside the swing cavity; the gear shaft passes through the first rotating shaft hole and is connected with the valve plate in the swing cavity; A transmission chamber is provided at the lower part of the valve body; The rotary disk and the second gear are arranged in the transmission cavity; the drive shaft is meshed with the second gear in the transmission cavity; The second gear is meshed with the rotary plate for transmission in the transmission cavity.

4. The swing type electric regulating valve according to claim 3, Features: A limiting step is arranged on the side wall of the through hole between the swing cavity and the transmission cavity; and the supporting seat is placed on the limiting step.

5. The swing type electric regulating valve according to claim 1, Features: A first sealing ring is installed on the clamping ring; and a second sealing ring is installed on the upper surface of the valve plate.

6. The swing type electric regulating valve according to claim 1, Features: A return spring is sleeved on the gear shaft.

7. The swing type electric regulating valve according to claim 1, Features: A roller is installed at the bottom end of the guide rod.

8. The swing type electric regulating valve according to claim 1, Features: The power source includes a motor, a first clutch and a second clutch; The first clutch and the second clutch are respectively mounted at the upper and lower ends of the driving shaft of the motor; The first clutch controls the connection or disconnection between the drive shaft and the first gear; The second clutch controls connection or disconnection of the drive shaft with the second gear.

9. The swing type electric regulating valve according to claim 1, Features: The power source includes a first motor and a second motor; The driving shaft of the first motor is connected to the first gear, driving the first gear to rotate, thereby driving the valve plate to swing; The driving shaft of the second motor is meshed with the second gear to drive the second gear and the rotary disk to rotate, thereby driving the valve plate to move axially.

10. The control method of the swing type electric regulating valve according to any one of claims 1 to 9, Features: The power source drives the first gear and the gear shaft to rotate, and then drives the valve plate to swing in the valve body to achieve flow regulation of the regulating valve: When the valve plate is in a closed state, the power source drives the second gear and the turntable to rotate, so that the support block applies an upward supporting force to the guide rod, thereby causing the guide rod and the clamping ring connected thereto to move upward; thereby squeezing the valve plate upward so that it fits tightly against the inner wall of the valve body, thereby achieving a sealed shutoff of the regulating valve.

Images