CN204512466U - Pneumatic ceramic flap valve - Google Patents

Abstract

The utility model belongs to the field of flap valves, in particular discloses a pneumatic ceramic flap valve; it solves the problems in the prior art and aims to provide a valve with reliable sealing, wide adaptability, application in the field of corrosive liquids, and long service life. , and can quickly cut off the pipeline medium pneumatic ceramic flap valve; including the box with a cavity inside, the box inlet and box outlet are welded with flange connection pipes with external threads, and the box inlet is equipped with a flip valve Plate assembly; the flap assembly includes a valve plate, valve plate rocker arm and box shaft, one end of the valve plate rocker arm is fixedly connected to the center of the valve plate for opening and closing the valve plate, and the other end of the valve plate rocker arm is fixed to the box body shaft Connected and rotated with the shaft of the box, one end of the shaft of the box passes through the shaft bracket of the box and is connected to the cylinder assembly; the cylinder assembly includes the cylinder, the stroke adjustment block and the rocker arm of the cylinder, and the cylinder shaft is connected to the rocker arm of the cylinder through the stroke adjustment block, The cylinder drives the rotating shaft of the box to rotate through the rocker arm of the cylinder to control the opening and closing of the valve plate.

Description

Pneumatic ceramic flap valve

technical field

The utility model belongs to the field of flap valves, in particular to a pneumatic ceramic flap valve. Mainly used in high wear and strong corrosion working environment.

Background technique

The traditional flap valve is used as the unloading device of the ash hopper of various types of ash removal equipment and the unloading device of equipment such as mills, dryers and silos. main driver. With the update of flap valve technology, now the flap valve can also be applied to the field of gas and liquid pipeline transportation.

However, when the existing flap valves are applied to the field of gas and liquid pipeline transportation, there are many problems, such as poor sealing and wear resistance, and it is basically not practical especially for corrosive environments. Life expectancy will be drastically reduced. In addition, the traditional mechanical flap valve has a long response time and cannot quickly cut off the pipeline fluid, while the electric flap valve will have certain safety hazards when it is applied to liquid media.

Utility model content

The utility model overcomes the deficiencies of the prior art, solves the problems of the prior art, and aims to provide a reliable seal, good interchangeability, excellent performance, wide adaptability, applicable to the field of corrosive liquids, and long service life. It is also a pneumatic ceramic flap valve that can quickly cut off the medium in the pipeline.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a pneumatic ceramic flap valve, including a box body with a cavity inside, the box body inlet and the box body outlet are opened on both sides of the box body, and the box body inlet Flange connection pipes with external threads are welded on the outlet of the box and the box body, and a flap assembly is installed at the box inlet;

The flap assembly includes a valve plate, a rocker arm of the valve plate and a rotating shaft of the box body. The valve plate is arranged at the inlet of the box body for closing and opening the inlet of the box body. One end of the rocker arm of the valve plate is fixedly connected with the center of the valve plate for opening and closing. When the valve plate is closed, the other end of the rocker arm of the valve plate is fixedly connected with the shaft of the box and rotates with the shaft of the box. One end passes through the box shaft bracket and is connected to the cylinder assembly;

The cylinder assembly includes a cylinder, a stroke adjustment block and a cylinder rocker arm, the cylinder shaft is connected with the cylinder rocker arm through the stroke adjustment block, the cylinder rocker arm is connected with the box shaft extending to the outside of the box bracket, and the cylinder drives the box through the cylinder rocker arm. The body shaft rotates to control the opening and closing of the valve plate.

Further, a seal assembly is provided at the connection between the box shaft and the box shaft bracket, and the seal assembly includes a skeleton sealing copper ring, a skeleton sealing ring, a bush and an end cover of the shaft bracket, a skeleton sealing copper ring, The skeleton sealing ring and the bushing are sequentially set on the casing rotating shaft, and the shaft bracket end cover is set on the casing rotating shaft and fixedly connected with the casing shaft bracket to fix the skeleton sealing copper ring, the skeleton sealing ring and the bushing.

Further, the inlet of the box body is provided with a ceramic static ring valve seat, and a ceramic sealing ring is arranged on the ceramic static ring valve seat. When the valve plate is closed, the valve plate contacts with the ceramic sealing ring to seal the box body inlet.

Further, the box body, the flange connection pipe and the valve plate are all made of cermet materials.

Further, auxiliary connecting brackets extend symmetrically from the rocker arm of the valve plate, and the auxiliary connecting brackets are connected to the valve plate through threads.

Further, an installation inspection hole is opened on the box body, and the inspection installation hole is sealed with an inspection opening blind plate.

Compared with the prior art, the utility model has the following beneficial effects.

First, the utility model is welded with a flange connection pipe with external thread at the inlet and outlet of the box body, so that the user can connect a suitable flange through the flange connection pipe according to actual needs, increasing the The scope of application of pneumatic ceramic flap valves.

Second, the utility model uses a cylinder to control the opening and closing of the valve plate, which expands the scope of use of the flap valve. It is also the advantage of the mechanical flap valve and the electric flap valve that the utility model has at the same time, and can be applied to In the field of liquid medium, there is no potential safety hazard, and it can respond quickly, and open and close the valve plate in time to control the liquid medium pipeline.

Third, the valve plate of the utility model and the inlet of the box body adopt a unique sealing structure, and the sealing performance is good. In addition, the box body, the flange connecting pipe and the valve plate are all made of cermet materials, which can be applied to high wear, high corrosion, high pressure, etc. Under harsh working conditions, the ceramic structure can greatly reduce the number of maintenance and replacement and prolong the service life of the flap valve.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is a structural schematic diagram of the utility model pneumatic ceramic flap valve.

FIG. 2 is a schematic side view of the structure of FIG. 1 .

FIG. 3 is a schematic top view of the structure of FIG. 1 .

Fig. 4 is a schematic diagram of the structure of the sealing assembly.

In the figure: 1 is the box body, 2 is the flange connecting pipe, 3 is the flap assembly, 31 is the valve plate, 32 is the rocker arm of the valve plate, 33 is the shaft of the box body, 34 is the shaft support of the box body, and 4 is the cylinder assembly , 41 is the cylinder, 42 is the stroke adjustment block, 43 is the rocker arm of the cylinder, 5 is the sealing assembly, 51 is the skeleton sealing copper ring, 52 is the skeleton sealing ring, 53 is the bushing, 54 is the end cover of the shaft support, 6 is ceramics Static ring valve seat, 7 is a ceramic sealing ring, 8 is an auxiliary connection bracket, and 9 is a blind plate for inspection port.

Detailed ways

As shown in Figures 1-3, the pneumatic ceramic flap valve includes a box body 1 with a cavity inside, and the two sides of the box body 1 are provided with a box body inlet and a box body outlet, and the box body inlet and the box body outlet A flange connection pipe 2 with external thread is welded on the top, and a flap assembly 3 is arranged at the inlet of the box body.

The flap assembly 3 includes a valve plate 31, a valve plate rocker arm 32 and a casing shaft 33. The valve plate 31 is arranged at the casing inlet for closing and opening the casing inlet. The center is fixedly connected to open and close the valve plate 31. The other end of the valve plate rocker arm 32 is fixedly connected to the box rotating shaft 33 and rotates with the box rotating shaft 33. The box rotating shaft 33 is fixedly arranged on both sides of the box body 1. The side casing shaft bracket 34 is movably connected, and one end of the casing rotating shaft 33 passes through the casing shaft bracket 34 and is connected with the cylinder assembly 4 .

The cylinder assembly 4 includes a cylinder 41, a stroke adjustment block 42 and a cylinder rocker arm 43, the axis of the cylinder 41 is connected with the cylinder rocker arm 43 through the stroke adjustment block 42, and the cylinder rocker arm 43 is connected to the casing shaft extending outside the casing 1 bracket 33 connection, the cylinder 41 drives the box rotating shaft 33 to rotate through the cylinder rocker arm 43 so as to control the opening and closing of the valve plate 31.

When using the utility model, the cylinder 41 is opened, and the shaft of the cylinder 41 extends through the stroke adjustment block 42 to drive the rocker arm 43 of the cylinder to rotate. When the rocker arm 43 of the cylinder rotates, the rotating shaft 33 of the casing is driven to rotate, and the rotating shaft 33 of the casing drives the rocking arm 32 of the valve plate. Movement thereby valve plate 31 is opened, when needing to close valve plate 31, cylinder 41 axle shrinks, with above-mentioned process, flap valve just can be closed.

As shown in Figure 4, in order to further improve the flexibility and sealing performance of the rotation between the box shaft 33 and the box 1 shaft, a sealing assembly 5 is provided at the connection between the box shaft 33 and the box shaft bracket 34, The sealing assembly 5 includes a skeleton sealing copper ring 51, a skeleton sealing ring 52, a bushing 53 and a shaft support end cover 54, and the skeleton sealing copper ring 51, the skeleton sealing ring 52 and the bushing 53 are sequentially set on the box rotating shaft 33, The shaft bracket end cover 54 is sleeved on the casing rotating shaft 33 and is fixedly connected with the casing shaft bracket 34 and fixes the skeleton sealing copper ring 51 , the skeleton sealing ring 52 and the bushing 53 .

In order to better improve the sealing performance and scope of application of the flap valve, a ceramic static ring valve seat 6 is arranged at the inlet of the box, and a ceramic sealing ring 7 is arranged on the ceramic static ring valve seat 6. When the valve plate 31 is closed, the valve The plate 31 is in contact with the ceramic sealing ring 7 to seal the inlet of the box body 1 . The box body 1, the flange connecting pipe 2 and the valve plate 31 are all made of cermet materials. The improved sealing performance between the valve plate 31 and the inlet of the box body 1 can minimize leakage. In addition, the corrosion resistance of the metal-ceramic material can greatly improve the scope of use of the flap valve, and can also greatly improve the service life of the valve.

In order to improve the stability of the valve plate 31 when opening and closing, an auxiliary connection bracket 8 is symmetrically extended from the rocker arm 32 of the valve plate, and the auxiliary connection bracket 8 is connected to the valve plate 31 through threads. The auxiliary valve plate rocker arm 32 drives the valve plate 31 to open and close to ensure that the valve plate 31 is evenly stressed when opening and closing, making the opening and closing process more stable.

In addition, the box body 1 is provided with an installation inspection hole, and the inspection installation hole is sealed with an inspection port blind plate 9 . When the flap valve needs maintenance, it can be maintained through the installation inspection port.

The above content has been described in detail for specific embodiments of the present invention in combination with the accompanying drawings of the embodiments. Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Within the scope of knowledge of those of ordinary skill in the art, various modifications can be made without departing from the gist of the present invention. kind of change.

Claims (6)

1. pneumatic ceramic Flap valve, it is characterized in that: comprise the casing (1) that there is cavity inside, the both sides of described casing (1) offer casing import and tank outlet, casing import and tank outlet are all welded with the externally threaded flange connections of band (2), and casing inlet is provided with panel turnover component (3);

Described panel turnover component (3) comprises valve plate (31), valve plate rocking arm (32) and casing rotating shaft (33), valve plate (31) is arranged at casing inlet for closing and opening casing import, valve plate rocking arm (32) one end is fixedly connected with for opening and closing valve plate (31) with valve plate (31) center, the other end of valve plate rocking arm (32) is fixedly connected with casing rotating shaft (33) and rotates with casing rotating shaft (33), described casing rotating shaft (33) is flexibly connected by the casing bracing strut (34) being fixedly installed on casing (1) both sides, one end of casing rotating shaft (33) is connected with cylinder assembly (4) through casing bracing strut (34),

Described cylinder assembly (4) comprises cylinder (41), Traffic control system block (42) and cylinder rocking arm (43), cylinder (41) axle is connected with cylinder rocking arm (43) by Traffic control system block (42), cylinder rocking arm (43) is connected with the casing rotating shaft (33) extending to casing (1) bracket outer, and cylinder (41) drives casing rotating shaft (33) to rotate by cylinder rocking arm (43) thus controls valve plate (31) opening and closing.

2. pneumatic ceramic Flap valve according to claim 1, it is characterized in that: the joint between described casing rotating shaft (33) and casing bracing strut (34) is provided with black box (5), described black box (5) comprises reinforced seal copper band (51), backbone sealing ring (52), lining (53) and bracing strut end cap (54), reinforced seal copper band (51), backbone sealing ring (52) and lining (53) are sleeved in casing rotating shaft (33) successively, bracing strut end cap (54) is sleeved on that casing rotating shaft (33) is upper to be fixedly connected with casing bracing strut (34) and by reinforced seal copper band (51), backbone sealing ring (52) and lining (53) are fixed.

3. pneumatic ceramic Flap valve according to claim 2, it is characterized in that: described casing inlet is provided with ceramic stationary ring valve seat (6), pottery stationary ring valve seat (6) is provided with ceramic seal circle (7), when valve plate (31) closes, valve plate (31) contacts with ceramic seal circle (7) to be closed casing (1) import.

4. pneumatic ceramic Flap valve according to claim 3, is characterized in that: described casing (1), flange connections (2) and valve plate (31) all adopt cermet material.

5. pneumatic ceramic Flap valve according to claim 1, it is characterized in that: the upper symmetry of described valve plate rocking arm (32) extends auxiliary connection support (8), is threaded connection between described auxiliary connection support (8) and valve plate (31).

6. pneumatic ceramic Flap valve according to claim 1, is characterized in that: (1) offers installation check hole with described casing, described inspection mounting hole inspection socket blind plate (9) sealing.