阅读说明：本技术 一种具有密封保护结构的蝶阀 (Butterfly valve with sealing protection structure ) 是由 李礼英 于 2019-09-02 设计创作，主要内容包括：本发明公开了一种具有密封保护结构的蝶阀,包括蝶阀阀体、阀杆和阀板,所述阀板的侧边设有软密封层,所述阀板的右端固接有保护座,所述保护座的左侧面采用弧形结构,且弧形结构表面固定贴设有条形弹性气囊,所述保护座的右侧面开设有一个水平的进水孔,所述进水孔连通有倾斜设置的出水槽,且出水槽的下端位于保护座的底部,所述保护座内部还设有配合条形弹性气囊使用的传动机构。本发明能够在阀板打开时自动对阀板侧边的软密封层进行贴合保护,防止其长期受到流体介质正面冲刷,从而保护了阀板和软密封层的密封效果,极大延长了阀门整体的使用寿命；还能够减少因介质泄漏导致强制停工的情况,从而提高生产效率。(The invention discloses a butterfly valve with a sealing protection structure, which comprises a butterfly valve body, a valve rod and a valve plate, wherein a soft sealing layer is arranged on the side edge of the valve plate, a protection seat is fixedly connected to the right end of the valve plate, the left side surface of the protection seat is of an arc structure, a strip-shaped elastic air bag is fixedly attached to the surface of the arc structure, a horizontal water inlet hole is formed in the right side surface of the protection seat, the water inlet hole is communicated with an obliquely arranged water outlet groove, the lower end of the water outlet groove is positioned at the bottom of the protection seat, and a transmission mechanism matched with the strip-shaped elastic air bag is further arranged inside the protection seat. The soft sealing layer at the side edge of the valve plate can be automatically attached and protected when the valve plate is opened, and the valve plate is prevented from being washed away by the front side of a fluid medium for a long time, so that the sealing effect of the valve plate and the soft sealing layer is protected, and the service life of the whole valve is greatly prolonged; and the forced shutdown caused by medium leakage can be reduced, thereby improving the production efficiency.)

1. The utility model provides a butterfly valve with sealed protection architecture, includes butterfly valve body (1), valve rod (2) and valve plate (3), the side of valve plate (3) is equipped with soft sealing layer (4), its characterized in that, the right-hand member rigid coupling of valve plate (3) has protection seat (5), the left surface of protection seat (5) adopts the arc structure, and the arc structure fixed surface pastes and is equipped with bar elasticity gasbag (6), a horizontally inlet opening (7) have been seted up to the right flank of protection seat (5), inlet opening (7) intercommunication has basin (8) that the slope set up, and the lower extreme of basin (8) is located the bottom of protection seat (5), the inside drive mechanism who still is equipped with cooperation bar elasticity gasbag (6) and uses of protection seat (5).

2. The butterfly valve with the seal protection structure according to claim 1, wherein the transmission mechanism comprises a first rotating shaft (9) rotatably connected to the inner side wall of the water outlet groove (8), the first rotating shaft (9) is fixedly sleeved with two impellers (10), the inner top wall of the water outlet groove (8) is further provided with a mounting groove (11), a partition plate (12) is fixedly connected to the opening of the mounting groove (11) in a sealing manner, the center of the partition plate (12) is rotatably connected with a second rotating shaft (13) which is vertically arranged in a penetrating manner, the first rotating shaft (9) and the second rotating shaft (13) are rotatably matched through a bevel gear set, the upper end of the second rotating shaft (13) is fixedly connected with a coil (14), and two magnets (15) with opposite magnetism are symmetrically embedded in the side walls of the mounting groove (11) at two sides of the coil (14), still fixed mounting has electrically conductive seat (16) that two cooperation coils (14) both ends used on mounting groove (11) lateral wall, is located cavity (17) have still been seted up to protection seat (5) inside directly over mounting groove (11), sealed through connection has electric heating piece (18) between the bottom of cavity (17) and the top of mounting groove (11), and two electrically conductive seats (16) all are connected through wire and electric heating piece (18) electricity, the interior bottom of cavity (17) is equipped with low boiling point evaporating liquid (19), it has piston slider (20) still to seal sliding connection on the inner wall of cavity (17), and fixedly connected with reset spring (21) between piston slider (20) and cavity (17) bottom, the upper end of cavity (17) still communicates through an air duct and bar elasticity gasbag (6).

Technical Field

The invention relates to the technical field of valves, in particular to a butterfly valve with a sealing protection structure.

Background

Butterfly valves are valves frequently used in fluid medium conveying pipelines. When the existing butterfly valve is in an open state, the soft sealing layer on the side edge of the valve plate close to the fluid medium input end is continuously washed by the conveyed medium, and the soft sealing layer of the valve plate is damaged due to long-term front washing, so that the service life of the valve is shortened; and the medium leakage can be caused after the valve sealing is failed, and the potential safety hazard can cause the production to be forced to stop, thereby reducing the production efficiency.

To this end, we propose a butterfly valve with a seal protection structure.

Disclosure of Invention

The invention aims to solve the problems that when a butterfly valve in the prior art is in an open state, a soft sealing layer on the side edge of a valve plate close to a fluid medium input end is continuously washed by a conveyed medium, and the soft sealing layer of the valve plate is damaged due to long-term frontal washing, so that the service life of the valve is shortened.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a butterfly valve with sealed protection architecture, includes butterfly valve body, valve rod and valve plate, the side of valve plate is equipped with the soft sealing layer, the right-hand member rigid coupling of valve plate has the protection seat, the left surface of protection seat adopts the arc structure, and the fixed surface of arc structure pastes and is equipped with bar elasticity gasbag, a horizontally inlet opening has been seted up to the right flank of protection seat, the inlet opening intercommunication has the play basin that the slope set up, and goes out the bottom that the lower extreme of basin is located the protection seat, the inside drive mechanism that still is equipped with cooperation bar elasticity gasbag and uses of protection seat.

In the butterfly valve with the sealing protection structure, the transmission mechanism comprises a first rotating shaft which is rotatably connected with the inner side wall of the water outlet groove, two impellers are fixedly sleeved on the first rotating shaft, a mounting groove is also formed in the top wall of the water outlet groove, a baffle is fixedly connected with the opening of the mounting groove in a sealing manner, the center of the baffle is rotatably connected with a vertically arranged second rotating shaft in a penetrating manner, the first rotating shaft and the second rotating shaft are rotatably matched through a bevel gear set, a coil is fixedly connected to the upper end of the second rotating shaft, two magnets with opposite magnetism are symmetrically embedded in the side walls of the mounting groove positioned at two sides of the coil, two conductive seats which are matched with two ends of the coil are fixedly arranged on the side walls of the mounting groove, a cavity is further formed in the protection seat positioned right above the mounting groove, and an electric heating piece is hermetically and penetratively connected, and two conductive seats are electrically connected with the electric heating sheet through leads, low-boiling-point evaporating liquid is arranged at the inner bottom of the cavity, a piston slide block is connected to the inner wall of the cavity in a sealing and sliding manner, a reset spring is fixedly connected between the piston slide block and the bottom of the cavity, and the upper end of the cavity is communicated with the strip-shaped elastic air bag through an air duct.

Compared with the prior art, this butterfly valve with sealed protection architecture's advantage lies in: the transmission mechanism arranged in the protective seat is matched with the strip-shaped elastic air bag and the soft sealing layer on the side surface of the valve plate for use, and transmission is carried out by utilizing the conveying process of a fluid medium, so that the strip-shaped elastic air bag is automatically expanded after the valve plate is opened and is tightly attached to the soft sealing layer on the side edge of the valve plate, and the strip-shaped elastic air bag is prevented from being washed away by the front side of the fluid medium for a long time, thereby protecting the sealing effect of the valve plate and the soft sealing layer and greatly prolonging the; and the forced shutdown caused by medium leakage can be reduced, thereby improving the production efficiency.

Drawings

FIG. 1 is a schematic structural view of a butterfly valve plate seal protection device according to the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: the automatic control valve comprises a butterfly valve body 1, a valve rod 2, a valve plate 3, a soft sealing layer 4, a protective seat 5, a strip-shaped elastic air bag 6, a water inlet hole 7, a water outlet groove 8, a first rotating shaft 9, an impeller 10, an installation groove 11, a partition plate 12, a second rotating shaft 13, a coil 14, a magnet 15, a conductive seat 16, a cavity 17, an electric heating plate 18, low-boiling-point evaporating liquid 19, a piston sliding block 20 and a return spring 21.

Detailed Description

The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.