阅读说明：本技术 一种蝶阀软密封阀座结构 (butterfly valve soft seal valve seat structure ) 是由 刘洋 孙德林 孔祥伟 侯勇俊 叶小华 于 2019-08-21 设计创作，主要内容包括：本发明涉及一种蝶阀软密封阀座结构,包括密封外圈、可拆外圈和两个阀轴套,所述的密封外圈的外壁中部均匀设有可拆外圈,密封外圈的左右两端设有两个阀轴套。本发明可以解决现有蝶阀阀座,蝶阀在开启和关闭的过程中,蝶板与阀座之间的摩擦力过大,与蝶板接触的阀座内壁容易产生磨损从而出现了间隙,导致了流体在蝶阀关闭状态时仍有少量流体泄漏,阀座阀体安装后,现有的阀轴通常直接插入阀座的当中,但是,阀轴与阀座之间容易存在间隙,使得流动的流体容易沿阀轴外表面从间隙处流出,从而降低了密封效果等问题。(The invention relates to a butterfly valve soft sealing valve seat structure which comprises a sealing outer ring, a detachable outer ring and two valve shaft sleeves, wherein the detachable outer ring is uniformly arranged in the middle of the outer wall of the sealing outer ring, and the two valve shaft sleeves are arranged at the left end and the right end of the sealing outer ring. The valve seat can solve the problems that in the opening and closing processes of the existing valve seat of the butterfly valve, the friction force between the butterfly plate and the valve seat is too large, the inner wall of the valve seat in contact with the butterfly plate is easy to wear, so that a gap is formed, a small amount of fluid still leaks when the butterfly valve is in a closed state, and after the valve seat and the valve body are installed, the existing valve shaft is usually directly inserted into the valve seat, but the gap is easy to form between the valve shaft and the valve seat, so that the flowing fluid can easily flow out from the gap along the outer surface of the valve shaft, the sealing effect is reduced, and the like.)

1. The utility model provides a butterfly valve soft seal disk seat structure, includes sealed outer lane (1), removable outer lane (2) and two valve shaft cover (3), its characterized in that: the middle part of the outer wall of the sealing outer ring (1) is uniformly provided with a detachable outer ring (2), and the left end and the right end of the sealing outer ring (1) are provided with two valve shaft sleeves (3);

The sealing outer ring (1) comprises a rubber frame (11), a sealing inner ring (12) and a folding connecting sleeve (13), the sealing inner ring (12) is installed in the middle of the rubber frame (11), and the left side and the right side of the lower end of the sealing inner ring (12) are connected with the rubber frame (11) through the folding connecting sleeve (13);

Two annular gaskets are arranged at the front end and the rear end of the inner wall of the rubber frame (11), embedded grooves are symmetrically formed in the front and rear of the outer wall of the rubber frame (11), and annular clamping blocks are arranged inside the embedded grooves;

the sealing inner ring (12) comprises an outer ring (121), a buffer layer (122) and an extrusion inner ring (123), the inner wall of the outer ring (121) is connected with the outer wall of the extrusion inner ring (123) through the buffer layer (122), the outer ring (121) is fixedly arranged in the middle of the rubber frame (11), and the extrusion inner ring (123) is connected with the rubber frame (11) in a sliding fit manner;

The middle part of the inner wall of the extrusion inner ring (123) is of an outward convex arc structure, the front end and the rear end of the inner wall of the extrusion inner ring (123) are of a fillet structure, and the inner wall of the extrusion inner ring (123) is symmetrically provided with sealing ring sets in the front and the rear directions;

The detachable outer ring (2) comprises an embedding frame (21), a connecting block (22), a connecting spring (23) and a water-absorbing sponge (24), the connecting block (22) is installed in the middle of the inner wall of the embedding frame (21), the water-absorbing sponge (24) is installed on the inner wall of the connecting block (22), and the connecting spring (23) is connected between the water-absorbing sponge (24) and the connecting block (22);

The valve shaft sleeve (3) comprises a rotating cylinder (31), a leakage-proof ring (32) and two mounting blocks (33), the two mounting blocks (33) are mounted at the upper end and the lower end of the rotating cylinder (31), the mounting blocks (33) are connected with a rubber frame (11) through bolts, and the leakage-proof ring (32) is mounted inside the rotating cylinder (31).

2. The butterfly valve soft seal valve seat structure of claim 1, wherein: the buffer layer (122) is of a frame structure made of rubber materials, and built-in springs are uniformly arranged inside the buffer layer (122).

3. The butterfly valve soft seal valve seat structure of claim 1, wherein: the folding connecting sleeve (13) is of an annular rubber structure, and the extrusion inner ring (123) is connected with the middle part of the rubber frame (11) through the folding connecting sleeve (13).

4. the butterfly valve soft seal valve seat structure of claim 1, wherein: the embedding frame (21) is connected with the embedding groove through a bolt, corresponding clamping blocks are arranged at the front end and the rear end of the inner wall of the embedding frame (21), and the corresponding clamping blocks are embedded into the annular clamping blocks.

5. The butterfly valve soft seal valve seat structure of claim 1, wherein: the upper end of the water absorption sponge (24) is provided with a connecting hole, and the connecting hole is connected with the connecting block (22) through a connecting spring (23).

6. The butterfly valve soft seal valve seat structure of claim 1, wherein: the inner wall of the rotating cylinder (31) is uniformly provided with inner grooves along the circumferential direction, steel balls are arranged in the inner grooves, and the rotating cylinder (31) is made of stainless steel materials.

7. the butterfly valve soft seal valve seat structure of claim 1, wherein: the inner aperture of the leakage-proof ring (32) is gradually increased from inside to outside, and the inner wall of the leakage-proof ring (32) is provided with a backflow groove.

8. The butterfly valve soft seal valve seat structure of claim 1, wherein: the outer end of leak protection circle (32) be equipped with the sealing ring, and the sealing ring reduces from inside to outside aperture gradually, and the barb groove has been seted up to the inner wall of sealing ring.

Technical Field

the invention relates to the technical field of valves, in particular to a butterfly valve soft sealing valve seat structure.

Background

The butterfly valve is also called a flap valve, is a regulating valve with simple structure, is a regulating valve which is opened and closed by rotating a butterfly plate in a valve seat around a valve shaft, is widely applied to the flow control of fluid media in a pipeline and mainly plays a role in cutting off and throttling, but the prior butterfly valve seat generally has the following problems:

1. In the opening and closing processes of the butterfly valve, the friction force between the butterfly plate and the valve seat is overlarge, and the inner wall of the valve seat in contact with the butterfly plate is easy to wear, so that a gap is formed, a small amount of fluid still leaks when the butterfly valve is in a closed state, and the sealing effect is reduced;

2. After the valve seat and the valve body are installed, the existing valve shaft is usually directly inserted into the valve seat, however, a gap is easily formed between the valve shaft and the valve seat, so that flowing fluid easily flows out from the gap along the outer surface of the valve shaft, and the sealing effect is reduced.

Disclosure of Invention

Technical problem to be solved

The valve seat can solve the problems that in the opening and closing processes of the existing valve seat of the butterfly valve, the friction force between the butterfly plate and the valve seat is too large, the inner wall of the valve seat in contact with the butterfly plate is easy to wear, so that a gap is formed, a small amount of fluid still leaks when the butterfly valve is in a closed state, and after the valve seat and the valve body are installed, the existing valve shaft is usually directly inserted into the valve seat, but the gap is easy to form between the valve shaft and the valve seat, so that the flowing fluid can easily flow out from the gap along the outer surface of the valve shaft, the sealing effect is reduced, and the like.

(II) technical scheme

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a butterfly valve soft seal disk seat structure, is including sealed outer lane, removable outer lane and two valve axle sleeves, the outer wall middle part of sealed outer lane evenly be equipped with removable outer lane, both ends are equipped with two valve axle sleeves about sealed outer lane.

The sealing outer ring comprises a rubber frame, a sealing inner ring and a folding connecting sleeve, the sealing inner ring is arranged in the middle of the rubber frame, the left side and the right side of the lower end of the sealing inner ring are connected with the rubber frame through the folding connecting sleeve, the rubber frame is manually installed in the valve body, the sealing inner ring plays a primary sealing effect on the butterfly plate, and the folding connecting sleeve plays a leakage-proof effect.

Rubber frame inner wall around both ends be equipped with two ring packing rings, ring packing ring's setting has played sealed effect, the embedded groove has been seted up to the outer wall front and back symmetry of rubber frame, and the inside of embedded groove is equipped with annular fixture block.

The sealed inner circle include outer lane, buffer layer and extrusion inner circle, the inner wall of outer lane passes through the buffer layer and links to each other with the outer wall of extrusion inner circle, outer lane fixed mounting is in the middle part of rubber frame, the extrusion inner circle links to each other with rubber frame through sliding fit's mode, the outer lane plays the effect of connecting and supporting, the effect that the butterfly plate that extrusion inner circle and rotation come played blockking is played with the fluid, and laminate between the effect of buffer layer and the butterfly plate all the time.

Extrusion inner circle inner wall middle part be outer convex arc structure, thereby outer convex arc structure's design and butterfly plate pivoted orbit are corresponding better and the butterfly plate between laminate, establish to the radius angle structure at both ends around the extrusion inner circle inner wall, reduced the laminating degree of difficulty of butterfly plate with the extrusion inner circle, and the symmetry is equipped with the sealing washer group around on the inner wall of extrusion inner circle, has further played sealed effect.

Removable outer lane include embedding frame, connecting block, coupling spring and the sponge that absorbs water, the inner wall mid-mounting of embedding frame has the connecting block, and the inner wall of connecting block installs the sponge that absorbs water, and even there is coupling spring between sponge and the connecting block that absorbs water, the sponge that absorbs water plays absorbent effect to the fluid that spills, coupling spring guarantees that the sponge that absorbs water pastes in the outer lane surface all the time.

The valve shaft sleeve comprises a rotating cylinder, a leakage-proof ring and two installation blocks, the two installation blocks are installed at the upper end and the lower end of the rotating cylinder, the installation blocks are connected with a rubber frame through bolts, the leakage-proof ring is installed inside the rotating cylinder, the valve shaft sleeve plays a role in stabilizing rotation of the valve shaft, and the leakage-proof ring reduces the possibility that fluid flows out along the outer wall of the valve shaft.

preferably, the buffer layer is of a frame structure made of rubber materials, and built-in springs are uniformly arranged in the buffer layer.

Preferably, the folding connecting sleeve is of an annular rubber structure, and the extrusion inner ring is connected with the middle part of the rubber frame through the folding connecting sleeve.

Preferably, the embedding frame is connected with the embedding groove through a bolt, corresponding clamping blocks are arranged at the front end and the rear end of the inner wall of the embedding frame, and the corresponding clamping blocks are embedded into the annular clamping blocks.

Preferably, the upper end of the water absorption sponge is provided with a connecting hole, and the connecting hole is connected with the connecting block through a connecting spring.

Preferably, the inner wall of the rotating cylinder is uniformly provided with inner grooves along the circumferential direction, steel balls are arranged in the inner grooves, and the rotating cylinder is made of stainless steel.

Preferably, the inner aperture of the leakage-proof ring is gradually increased from inside to outside, and the inner wall of the leakage-proof ring is provided with a backflow groove.

Preferably, the outer end of the leakage-proof ring is provided with a sealing ring, the aperture of the sealing ring is gradually reduced from inside to outside, and the inner wall of the sealing ring is provided with a barb groove.

(III) advantageous effects

1. According to the butterfly valve soft sealing valve seat structure, the abrasion degree between the extrusion inner ring and the butterfly plate is reduced by adopting a design concept of buffer lamination, the sealing effect is improved by arranging the folding connecting sleeve and the water absorption sponge, the stability of rotation of the valve shaft is improved by matching and connecting the valve shaft sleeve and the valve shaft, and the possibility that fluid flows out along the valve shaft is reduced by dredging and blocking;

2. According to the butterfly valve soft seal valve seat structure, the abrasion degree of the extrusion inner ring is reduced by adopting a buffer fitting mode for the seal outer ring, and the possibility of fluid leakage is reduced under the action of the seal connection of the folding connecting sleeve;

3. according to the butterfly valve soft sealing valve seat structure, the detachable outer ring is of a detachable structure and can be replaced at any time, and the water absorption sponge absorbs leaked fluid, so that the fluid is prevented from leaking;

4. according to the valve shaft sleeve, the stability of rotation of the valve shaft is improved, and the leakage-proof ring is arranged to dredge and collect leaked fluid, so that the sealing effect is improved.

drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a first partial cross-sectional view of the present invention;

FIG. 2 is a second partial cross-sectional view of the present invention;

FIG. 3 is a schematic view of the structure of the leakproof ring of the invention;

FIG. 4 is an enlarged view of the invention in section X of FIG. 2;

Fig. 5 is a partial enlarged view of the invention in the Y direction of fig. 1.

Detailed Description

embodiments of the present invention will be described below with reference to the drawings. In this process, the width of the lines or the size of the components in the drawings may be exaggerated for clarity and convenience of description.

The following terms are defined based on the functions of the present invention, and may be different depending on the intention of the user or the operator or the convention. Therefore, these terms are defined based on the entire contents of the present specification.

As shown in fig. 1 to 5, a butterfly valve soft seal valve seat structure comprises a seal outer ring 1, a detachable outer ring 2 and two valve shaft sleeves 3, wherein the detachable outer ring 2 is uniformly arranged in the middle of the outer wall of the seal outer ring 1, and the two valve shaft sleeves 3 are arranged at the left end and the right end of the seal outer ring 1.

The sealing outer ring 1 comprises a rubber frame 11, a sealing inner ring 12 and a folding connecting sleeve 13, the sealing inner ring 12 is installed in the middle of the rubber frame 11, the left side and the right side of the lower end of the sealing inner ring 12 are connected with the rubber frame 11 through the folding connecting sleeve 13, the rubber frame 11 is installed in a valve body manually, the sealing inner ring 12 plays a primary sealing effect on a butterfly plate, and the folding connecting sleeve 13 plays a leakage-proof effect.

rubber frame 11 inner wall around both ends be equipped with two ring packing rings, ring packing ring's setting has played sealed effect, the embedded groove has been seted up to the outer wall longitudinal symmetry of rubber frame 11, and the inside of embedded groove is equipped with annular fixture block.

The sealing inner ring 12 comprises an outer ring 121, a buffer layer 122 and an extrusion inner ring 123, the inner wall of the outer ring 121 is connected with the outer wall of the extrusion inner ring 123 through the buffer layer 122, the outer ring 121 is fixedly installed in the middle of the rubber frame 11, the extrusion inner ring 123 is connected with the rubber frame 11 through a sliding fit mode, the outer ring 121 plays a role in connection and support, the extrusion inner ring 123 and a rotating butterfly plate play a role in stopping fluid, and the butterfly plate is always attached to the extrusion inner ring 122 in the role of the buffer layer. The buffer layer 122 is a frame structure made of rubber, and the buffer layer 122 is uniformly provided with built-in springs inside.

Extrusion inner circle 123 inner wall middle part be outer convex arc structure, thereby outer convex arc structure's design and the corresponding better and the butterfly plate of butterfly plate pivoted orbit are laminated, the preceding back both ends of extrusion inner circle 123 inner wall are established to the radius angle structure, have reduced the laminating degree of difficulty of butterfly plate with extrusion inner circle 123, and the symmetry is equipped with the sealing washer group around on the inner wall of extrusion inner circle 123, has further played sealed effect.

The folding connecting sleeve 13 is of an annular rubber structure, the design of the annular rubber structure ensures that the extrudable inner ring 123 still has a sealing effect when moving, and the extrudable inner ring 123 is connected with the middle part of the rubber frame 11 through the folding connecting sleeve 13.

Removable outer lane 2 including embedding frame 21, connecting block 22, connecting spring 23 and the sponge 24 that absorbs water, the inner wall mid-mounting of embedding frame 21 has connecting block 22, and the inner wall of connecting block 22 installs the sponge 24 that absorbs water, and even have connecting spring 23 between sponge 24 that absorbs water and the connecting block 22, sponge 24 that absorbs water plays absorbent effect to the fluid that spills, connecting spring 23 guarantees that sponge 24 that absorbs water pastes in outer lane 121 surface all the time.

Embedding frame 21 pass through the bolt and link to each other with the embedded groove, and both ends are equipped with corresponding fixture block around the embedding frame 21 inner wall, and correspond in the fixture block embedding annular fixture block, thereby embedding frame 21 can be detached and change water-absorbing sponge 24, thereby the laminating between corresponding fixture block and the annular fixture block has prolonged the length of binding face and has improved the laminating effect.

the upper end of the water absorption sponge 24 is provided with a connecting hole, and the connecting hole is connected with the connecting block 22 through a connecting spring 23.

The valve shaft sleeve 3 comprises a rotating cylinder 31, a leakage-proof ring 32 and two mounting blocks 33, the two mounting blocks 33 are mounted at the upper end and the lower end of the rotating cylinder 31, the mounting blocks 33 are connected with the rubber frame 11 through bolts, the leakage-proof ring 32 is mounted inside the rotating cylinder 31, the valve shaft sleeve 3 plays a role in stabilizing rotation of the valve shaft, and the leakage-proof ring 32 reduces the possibility that fluid flows out along the outer wall of the valve shaft.

The inner wall of the rotating cylinder 31 is uniformly provided with inner grooves along the circumferential direction, and steel balls are arranged in the inner grooves, so that the friction force between the rotating cylinder 31 and the valve shaft is reduced, the rotating cylinder 31 is made of stainless steel, and the rotating cylinder 31 made of stainless steel improves the stability and the rust prevention effect of the connecting of the rotating cylinder 31 and the valve shaft.

the inner aperture of the leakage-proof ring 32 is gradually increased from inside to outside, and the inner wall of the leakage-proof ring 32 is provided with a backflow groove, so that the backflow groove has a certain dredging effect on the fluid.

The outer end of leak protection circle 32 be equipped with the sealing ring, and the sealing ring reduces from inside to outside aperture gradually, and the barb groove has been seted up to the inner wall of sealing ring, the barb groove is collected the fluid that flows out, has avoided the effect that the fluid leaked.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.