Valve body connecting device for water inlet of electric door for flushing water of demister

Abstract

The utility model belongs to the technical field of valve body connection for water inflow of a demister flushing water electrically operated gate, and particularly relates to a valve body connection device for water inflow of a demister flushing water electrically operated gate, which comprises a connection cylinder, two ends of the connection cylinder are fixedly connected with connection flanges, and a connection shaft penetrates through the inside of the connection cylinder. One end of the connecting shaft is connected with a gear shaft, the other end of the connecting shaft is provided with a butt joint groove, a connecting pin penetrates through the outer wall of the connecting shaft in a threaded mode, and the outer wall of the connecting shaft is sleeved with a first sealing ring. Through the arrangement of the annular groove, the spring, the annular connecting plate and the second sealing ring, when the connecting flange is in butt joint with the connecting end of the motor or the valve body, the second sealing ring between the connecting flange and the motor or the valve body is stressed along with screwing of the bolt, the annular connecting plate extrudes the spring to enable the spring to deform, and the second sealing ring deforms to fill the gap after being stressed. Therefore, the sealing effect of the joint of the valve body connecting device is further improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of valve body connection for electric gate inlet of demister flushing water, specifically relating to a valve body connection device for electric gate inlet of demister flushing water. Background Technology

[0002] The electric flushing water valve for the demister is a key piece of equipment in the flue gas desulfurization system, primarily used to control the flow of flushing water to the demister. Driven by a motor, it can receive signals from the control system to achieve remote automatic opening and closing. It is often linked with differential pressure gauges and level gauges, triggering the flushing program according to a set cycle or differential pressure threshold. The valve body is mostly made of stainless steel or rubber-lined material, resistant to erosion and corrosion. The actuator is equipped with limit switches, torque switches, and position feedback devices to ensure precise opening and closing and prevent overload. Common types include butterfly valves and ball valves. Butterfly valves are suitable for large-diameter applications, while ball valves offer better sealing. The demister flushing water system mainly consists of flushing nozzles, flushing pumps, pipelines, valves, pressure gauges, and electrical control components. Its function is to periodically flush the demister plates, which capture small droplets and solid deposits, keeping the plate surfaces clean and moist, preventing scaling and blockage of the flow channels. Therefore, the flushing system is extremely important for the demister itself. Whether a demister can maintain efficient and trouble-free operation in the future largely depends on whether the flushing system is operating normally. In particular, the flushing water electric valve plays a key role in the system. In the demister flushing water electric valve, a connecting device is usually required to connect the motor and the valve body.

[0003] Currently, in the process of using the existing valve body connection device for the electric gate of the demister flushing water, the motor and the valve body are usually connected through the connecting flanges at both ends of the connecting cylinder. However, the connecting flange connection in the traditional valve body connection device for the electric gate of the demister flushing water often does not have a good sealing structure. Therefore, after long-term use, leakage may occur at the flange connection of the valve body connection device, thereby reducing the overall sealing effect of the valve body connection device. Utility Model Content

[0004] The purpose of this utility model is to provide a valve body connection device for the inlet of the electric gate for demister flushing water. This addresses the problem that existing valve body connection devices for demister flushing water inlets typically require connecting flanges at both ends of the connecting cylinder to connect the motor and valve body. However, the connecting flanges in traditional demister flushing water inlet valve body connection devices often lack a good sealing structure, leading to potential leakage after prolonged use and reducing the overall sealing effect of the valve body connection device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a valve body connecting device for the inlet of an electric door for flushing water of a demister, comprising a connecting cylinder, connecting flanges fixedly connected to both ends of the connecting cylinder, a connecting shaft passing through the interior of the connecting cylinder, a gear shaft connected to one end of the connecting shaft, and a mating groove provided at the other end of the connecting shaft;

[0006] A connecting pin is threaded through the outer wall of the connecting shaft, a first sealing ring is fitted onto the outer wall of the connecting shaft, a drain hole is provided on the outer wall of the connecting cylinder, an annular groove is provided on the surface of the connecting flange, a spring is connected inside the annular groove, one end of the spring is connected to an annular connecting plate, and a second sealing ring is adhered to the surface of the annular connecting plate.

[0007] As a preferred embodiment of the valve body connection device for the electric gate inlet of the demister flushing water according to this utility model, the second sealing ring can form an elastic structure with the connecting flange through an annular groove, a spring, and an annular connecting plate.

[0008] As a preferred embodiment of the valve body connection device for the water inlet of the electric gate for demister flushing water according to this utility model, four springs are provided, and the four springs are arranged in a ring.

[0009] As a preferred embodiment of the valve body connection device for the electric door inlet of the demister flushing water according to this utility model, the outer wall of the annular connecting plate is provided with four guide sliders distributed in an annular pattern, and the inner wall of the annular groove is provided with four guide grooves distributed in an annular pattern.

[0010] As a preferred embodiment of the valve body connection device for the electric gate inlet of the demister flushing water according to this utility model, the annular connecting plate can form a sliding connection structure with the connecting flange through the annular groove, the guide slider, and the guide slide groove.

[0011] As a preferred embodiment of the valve body connection device for the electric gate inlet of the demister flushing water according to this utility model, the surface of the connection flange is provided with an arc-shaped groove.

[0012] In a preferred embodiment of the present invention, the arc-shaped groove and the annular groove are connected.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] By incorporating an annular groove, spring, annular connecting plate, and second sealing ring, when the connecting flange is connected to the motor or valve body, the second sealing ring between them will be stressed as the bolts are tightened. The annular connecting plate will also compress the spring to deform it. After being stressed, the second sealing ring will deform to fill the gap, thereby further improving the sealing effect at the connection of the valve body connection device.

[0015] By incorporating a spring, annular connecting plate, guide slider, guide groove, and arc groove, when the second sealing ring needs replacement due to damage, the valve body connecting device can be disassembled. At this time, the deformation spring will return to its original state, allowing the annular connecting plate to push the second sealing ring outward. The guide slider and guide groove provide guidance when the annular connecting plate pops out. Finally, the connected arc groove allows for easy removal and replacement of the damaged second sealing ring, thereby improving maintenance convenience. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0019] Figure 3 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0020] Figure 4 This is an enlarged structural schematic diagram of the present invention.

[0021] In the diagram: 1. Connecting cylinder; 2. Connecting flange; 3. Connecting shaft; 4. Gear shaft; 5. Connecting groove; 6. Connecting pin; 7. First sealing ring; 8. Annular groove; 9. Spring; 10. Annular connecting plate; 11. Second sealing ring; 12. Guide slider; 13. Guide groove; 14. Arc groove; 15. Drain hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 The present invention provides the following technical solution: a valve body connection device for the inlet of the electric door for flushing water of a demister, including a connecting cylinder 1, connecting flanges 2 fixedly connected to both ends of the connecting cylinder 1, a connecting shaft 3 passing through the inside of the connecting cylinder 1, a gear shaft 4 connected to one end of the connecting shaft 3, and a mating groove 5 opened at the other end of the connecting shaft 3;

[0024] A connecting pin 6 is threaded through the outer wall of the connecting shaft 3. A first sealing ring 7 is sleeved on the outer wall of the connecting shaft 3. A drain hole 15 is opened on the outer wall of the connecting cylinder 1. An annular groove 8 is opened on the surface of the connecting flange 2. A spring 9 is connected inside the annular groove 8. One end of the spring 9 is connected to an annular connecting plate 10. A second sealing ring 11 is bonded to the surface of the annular connecting plate 10.

[0025] It should be noted that spring 9 is made of nickel-based alloy. Nickel-based alloy spring 9 has extremely strong corrosion resistance, can withstand high temperatures of over 1000℃, and has excellent oxidation resistance.

[0026] It is also important to note that a keyway is provided on the outer wall of one end of the connecting shaft 3, and a corresponding protrusion is provided on the inner wall of the gear shaft 4. A drain hole 15 is designed in the middle of the connecting cylinder 1. When the valve body sealing ring is damaged and water enters, it can be drained through this drain hole 15 to prevent water from directly entering the electric door and causing damage to the plates and motor and other accessories.

[0027] Preferably, the second sealing ring 11 can form an elastic structure with the connecting flange 2 through the annular groove 8, the spring 9, and the annular connecting plate 10. There are four springs 9, and the four springs 9 are distributed in annular shape.

[0028] In practical use, through the arrangement of the annular groove 8, spring 9, annular connecting plate 10, and second sealing ring 11, when the connecting flange 2 is connected to the connection end of the motor or valve body, the second sealing ring 11 between the two will be stressed as the bolts are tightened, and the annular connecting plate 10 will also squeeze the spring 9 to deform. After being stressed, the second sealing ring 11 will deform to fill the gap, thereby further improving the sealing effect at the connection of the valve body connection device.

[0029] Preferably, the outer wall of the annular connecting plate 10 is provided with four guide sliders 12, and the inner wall of the annular groove 8 is provided with four guide grooves 13. The annular connecting plate 10 can form a sliding connection structure with the connecting flange 2 through the annular groove 8, the guide sliders 12, and the guide grooves 13. The surface of the connecting flange 2 is provided with an arc groove 14, which is connected to the annular groove 8.

[0030] In practical use, through the arrangement of spring 9, annular connecting plate 10, guide slider 12, guide groove 13, and arc groove 14, when the second sealing ring 11 is damaged and needs to be replaced, the valve body connecting device is disassembled. At this time, the deformation spring 9 will return to its original state, allowing the annular connecting plate 10 to push the second sealing ring 11 outward. The guide slider 12 and guide groove 13 can guide the annular connecting plate 10 when it pops out. Finally, the connected arc groove 14 allows the damaged second sealing ring 11 to be easily removed and replaced, thereby improving the convenience of maintenance.

[0031] Working principle: First, the valve shaft of the valve body is inserted into the mating groove 5. Then, the connecting pin 6 is used to simultaneously pass through the connecting shaft 3 and the valve shaft of the valve body for fixation. Next, the connecting flange 2 at one end is used with bolts for further connection. The other end of the connecting shaft 3, after being fitted with the gear shaft 4, is connected to the motor via the connecting flange 2 at the other end. During this process, through the arrangement of the annular groove 8, spring 9, annular connecting plate 10, and second sealing ring 11, when the connecting flange 2 is mated with the connecting end of the motor or valve body, the second sealing ring 11 will be stressed as the bolts are tightened. The annular connecting plate 10 will also compress the spring 9, causing it to deform. The second sealing ring 11... When subjected to force, it deforms to fill the gap, thereby further improving the sealing effect at the connection of the valve body connecting device. Furthermore, through the setting of spring 9, annular connecting plate 10, guide slider 12, guide groove 13, and arc groove 14, when the second sealing ring 11 is damaged and needs to be replaced, the valve body connecting device is disassembled. At this time, the deformation spring 9 will return to its original state, allowing the annular connecting plate 10 to push the second sealing ring 11 outward. The setting of guide slider 12 and guide groove 13 can play a guiding role when the annular connecting plate 10 pops out. Finally, the connected arc groove 14 can easily remove and replace the damaged second sealing ring 11, thereby improving the convenience of maintenance.

[0032] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A valve body connection device for the water inlet of an electrically operated defroster flush water gate, comprising a connection cylinder (1), characterized in that: The two ends of the connecting cylinder (1) are fixedly connected to connecting flanges (2), and a connecting shaft (3) runs through the inside of the connecting cylinder (1). One end of the connecting shaft (3) is connected to a gear shaft (4), and the other end of the connecting shaft (3) is provided with a mating groove (5). The outer wall of the connecting shaft (3) is threaded with a connecting pin (6), the outer wall of the connecting shaft (3) is fitted with a first sealing ring (7), the outer wall of the connecting cylinder (1) is provided with a drain hole (15), the surface of the connecting flange (2) is provided with an annular groove (8), the inside of the annular groove (8) is connected with a spring (9), one end of the spring (9) is connected with an annular connecting plate (10), and the surface of the annular connecting plate (10) is bonded with a second sealing ring (11).

2. The valve connecting device for the water inlet of the electric door of the demister flush water according to claim 1, characterized in that: The second sealing ring (11) can form an elastic structure with the connecting flange (2) through the annular groove (8), spring (9), and annular connecting plate (10).

3. The valve connecting device for the water inlet of the electric door of the demister flush water according to claim 1, characterized in that: Four springs (9) are provided, and the four springs (9) are arranged in a ring.

4. The valve connecting device for the water inlet of the electric door of the demister flush water according to claim 1, characterized in that: The outer wall of the annular connecting plate (10) is provided with four guide sliders (12), and the inner wall of the annular groove (8) is provided with four guide grooves (13).

5. The valve connecting device for the water inlet of the electric door of the demister flush water according to claim 4, characterized in that: The annular connecting plate (10) can form a sliding connection structure with the connecting flange (2) through the annular groove (8), guide slider (12), and guide slide groove (13).

6. The valve body connection device for the electric water inlet of the demister flush water according to claim 1, characterized in that: The surface of the connecting flange (2) is provided with an arc-shaped groove (14).

7. A valve body connection device for electrically actuated water inlet of a demister flush water according to claim 6, characterized in that: The arc-shaped groove (14) is connected to the annular groove (8).

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