CN210372276U - Grinding disc material conveying valve with self-dustproof valve rod - Google Patents
Grinding disc material conveying valve with self-dustproof valve rod Download PDFInfo
- Publication number
- CN210372276U CN210372276U CN201921259923.3U CN201921259923U CN210372276U CN 210372276 U CN210372276 U CN 210372276U CN 201921259923 U CN201921259923 U CN 201921259923U CN 210372276 U CN210372276 U CN 210372276U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- sealing
- barrier
- peripheral surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lift Valve (AREA)
Abstract
The utility model provides a millstone material conveying valve with an autonomous dustproof valve rod, which adopts a sealing part with an active dustproof function to carry out active dustproof sealing on the middle part of the valve rod, and can ensure that the material conveying valve does not leak and accumulate materials in the working process, thereby further slowing down the abrasion and radial stress state of the valve rod, so that the resistance of the material conveying valve in the opening and closing action process is reduced and the working smoothness of the material conveying valve is improved; in addition, this sealing member with initiative dustproof function has compact structure and the advantage that the component part is few, and it can reduce occupation space effectively and prolong the holistic life of material transfer valve.
Description
Technical Field
The invention relates to the technical field of material conveying valves of thermal power ash removal systems, in particular to a millstone material conveying valve with an autonomous dustproof valve rod.
Background
The valve rod is a part in the valve, and the millstone material transmission valve drives the valve plate to move by depending on the rotation of the valve rod in the opening and closing process, so that the functions of closing the valve and opening the valve are realized. Meanwhile, the sealing component in the middle of the valve rod tightly holds the valve rod through interference fit, so that the rotary sealing of the valve rod relative to the rotary rotating shaft is realized during working. Therefore, the valve rod is a core transmission part in the whole valve system, and the working state and the sealing performance of the valve rod directly influence the service life of the whole valve and the quality of the secondary sealing performance.
At present, material conveying valves used in thermal power operation dust removal systems are all used for conveying high-temperature and corrosive ash media, if no sealing device is arranged at the lower part of a valve rod or the sealing performance of the sealing device is poor, the gas in the material conveying valve is transmitted to the middle part of the valve rod through the gap between the valve cover and the valve rod, when the powder and ash medium in the middle part of the valve rod is accumulated to a certain degree, which necessarily fills and plugs the middle of the stem, where the seal is further compressed, the radial force of the sealing device on the valve rod is further increased, which can cause the problem of insufficient thrust of the cylinder, so that the valve rod can not realize accurate valve opening and closing action, if the accumulation degree of the powder medium is increased, the valve rod can be clamped or sheared off due to a series of serious consequences, and the service life of the valve can be directly determined by the sealing performance of the sealing device arranged at the lower part of the valve rod.
The above information disclosed in the background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is known to a person of ordinary skill in the art.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a grinding disc material conveying valve with an autonomous dustproof valve rod, which comprises a valve body, a valve cover, a valve rod and a rotary arm, wherein the valve body is fixedly connected with the valve cover, the valve rod penetrates through a valve cover hole of the valve cover to be assembled and connected, the rotary arm is connected with the lower end of the valve rod, the rotary arm is positioned between the valve cover and the valve body, a gap is formed between the valve rod and the valve cover, and a sealing part is arranged in the gap between the valve rod and the valve cover; the seal member includes a lower lip portion and a lower seal ring portion; the lower lip part is funnel-shaped, and the lower lip part is flexibly and closely attached to the valve cover; the lower sealing ring part is arranged on the inner side of the upper part of the lower lip part, the lower sealing ring part is provided with a multi-channel blocking structure, and the lower sealing ring part is tightly attached to and tightly held on the valve rod. Therefore, the material conveying valve with the self-dustproof valve rod is different from the material conveying valve in the prior art, the valve rod is not sealed by a traditional sealing ring, but the middle part of the valve rod is actively sealed in a dustproof manner by a sealing part with an active dustproof function, the sealing part can not only prevent the dust medium existing in the material conveying valve from leaking outwards through a gap between the valve rod and the valve cover to pollute the environment, but also prevent the dust medium from accumulating in the middle part of the valve rod to cause the occurrence of the working jamming or blocking of the valve; in addition, this material delivery valve can improve the work reaction rate of valve effectively through the valve rod that uses the automatic dustproof function of area to and the secondary seal system in cooperation valve rod middle part improves the work efficiency of valve, thereby finally delays the wearing and tearing of valve rod and prolongs the life of valve rod.
The invention provides a millstone material conveying valve with an autonomous dustproof valve rod, which comprises a valve body, a valve cover, a valve rod and a rotating arm,
the valve body and the valve cover are mutually fastened and connected, the valve rod penetrates through a valve cover hole of the valve cover to be assembled and connected, the rotating arm is connected with the lower end of the valve rod, the rotating arm is positioned between the valve cover and the valve body, and a gap is formed between the valve rod and the valve cover,
a sealing part is arranged in a gap between the valve rod and the valve cover;
the seal member includes a lower lip portion and a lower seal ring portion;
the lower lip part is funnel-shaped, and the lower lip part is flexibly and tightly attached to the rotating arm;
the lower sealing ring part is arranged on the inner side of the upper part of the lower lip part, the lower sealing ring part is provided with a multi-channel blocking structure, and the lower sealing ring part is tightly attached to and tightly held on the valve rod;
further, the lower lip portion includes a first edge portion and a second edge portion;
the first edge and the second edge are both of annular structures;
the first edge part is a vertical hollow cylinder, and the inner side peripheral wall of the vertical hollow cylinder and the outer peripheral surface of the valve rod are tightly attached to each other;
the second edge part is connected and arranged above the first edge part, the second edge part is provided with a horizontal bearing body, and the lower sealing ring part is arranged above the horizontal bearing body structure;
further, the first rim portion has a first degree of flexibility and the second rim portion has a second degree of flexibility,
the first degree of flexibility is greater than the second degree of flexibility,
the second edge part further comprises a horizontal bearing part and a vertical resisting part, the horizontal bearing part is smoothly connected with the upper top end of the first edge part, and the vertical resisting part is arranged at the outermost side end of the horizontal bearing part and is smoothly connected with the outermost side end;
the lower sealing ring part, the horizontal bearing part and the vertical resisting part are mutually embedded and connected;
further, the lower seal ring part comprises a ring base body and a multi-channel barrier body arranged on the ring base body;
the ring base seat body and the multi-channel barrier body are integrally arranged;
the ring base body is provided with a vertical inner side peripheral surface matched with the peripheral surface of the valve rod, and the vertical inner side peripheral surface and the peripheral surface are mutually attached;
a groove is formed in the region, close to the lower lip edge, of the multi-channel blocking body, and the lower lip edge is partially embedded into the groove so as to achieve mutual embedded connection between the lower sealing ring part and the lower lip edge;
further, the multi-channel blocking body is a multi-labyrinth-channel labyrinth-type blocking body;
the labyrinth type barrier with the multiple labyrinth channels comprises a barrier base body and a plurality of channel grooves arranged on the upper surface of the barrier base body;
the plurality of channel grooves are communicated with each other and arranged on the upper surface of the blocking base body in a staggered and criss-cross state;
the plurality of passage grooves extend integrally in a direction surrounding an outer peripheral surface of the valve stem, and each of the passage grooves does not engage with the outer peripheral surface of the valve stem;
further, the multi-channel blocking body is a gradual change type blocking body;
the gradual change is that the barrier body comprises a barrier base body and a plurality of gradual change structural bodies arranged on the upper surface of the barrier base body;
the plurality of gradually-changed structural bodies comprise a plurality of barrier structural bodies with gradually-reduced volumes along the direction extending from the inner side to the outer side, or a plurality of barrier structural bodies with gradually-increased volumes along the direction extending from the inner side to the outer side;
in the plurality of barrier structures, any two adjacent barrier structures are smoothly connected;
furthermore, the sealing component is in interference connection with the outer peripheral surface of the valve rod;
the interference generated by the sealing component through the interference connection generates a radial force perpendicular to the outer peripheral surface of the valve rod on the valve rod, and the radial force directly influences the specific sealing pressure value of the sealing component on the valve rod;
further, a reverse step hole is formed at the position, close to the sealing part, of the bottom end of the valve cover;
the seal member further includes an upper lip portion and an upper seal ring portion;
the upper lip part has a step shape matching the reverse step hole, and the upper lip part is disposed against a surface of the reverse step;
the upper sealing ring part is arranged on the inner side of the upper step of the upper lip part and is tightly attached to the outer peripheral surface of the valve rod;
further, an inner side of a lower step of the upper lip portion is engaged with the lower seal ring portion;
the inner side wall surface of the upper sealing ring part, which is attached to the outer peripheral surface of the valve rod, is provided with a plurality of dredging guide grooves,
the dredging grooves extend along the circumferential direction of the outer circumferential surface of the valve rod and are arranged in parallel;
a groove is arranged on the upper side of the upper sealing ring, and the upper lip edge part is partially embedded into the groove so as to realize mutual embedded connection between the upper sealing ring part and the upper lip edge part;
further, the sealing component is embedded on the valve cover in an interference fit mode;
the valve cover limits and positions the sealing component in the direction of the end face of the valve cover relative to the length;
alternatively, the first and second electrodes may be,
a secondary sealing body is further arranged on the lower end side of the sealing component;
alternatively, the first and second electrodes may be,
the lower lip portion and the lower seal ring portion are made of different types of elastic materials respectively.
Compared with the prior art, the material conveying valve with the self-dustproof valve rod adopts the sealing component with the active dustproof function to carry out active dustproof sealing on the middle part of the valve rod; the sealing component with the active dustproof function can be tightly attached to the valve rod main body in a natural state and can be subjected to adaptive sealing adjustment along with the working state of the valve rod in real time, so that active dustproof sealing among the valve cover, the rotating arm and the valve rod is realized; the sealing part with the active dustproof function also has an automatic compensation function, when the sealing part is abraded, the sealing part can automatically compensate a gap generated by abrasion under the pushing of the pressure of a transmission medium in the material conveying valve, so that the sealing part can be always tightly attached to the rotating arm and the valve rod to form effective dustproof sealing; the sealing component with the active dustproof function can also ensure that the material conveying valve does not leak materials in the working process, so that the condition that the secondary sealing system of the material conveying valve is blocked by dust media in the operation process of the material conveying valve can not occur, the abrasion and radial stress states of the valve rod are further slowed down, the resistance of the material conveying valve in the opening and closing action process is reduced, and the working smoothness of the material conveying valve is improved; finally, this sealing member with initiative dustproof function has compact structure and constitutes the advantage that the part is few, and it can reduce occupation space effectively and prolong the holistic life of material transfer valve.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments or technical descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a material conveying valve with an autonomous dustproof valve rod provided by the invention.
Fig. 2 is a schematic structural diagram of a sealing part in a material conveying valve with an autonomous dust-proof valve rod provided by the invention.
Fig. 3 is another embodiment of fig. 2.
Reference numerals: 1. a valve body; 2. a valve cover; 3. a valve stem; 4. a rotating arm; 5. a sealing member; 6. a lower lip portion; 7. a lower seal ring portion; 8. a reverse stepped bore; 9. an upper lip portion; 10. an upper seal ring portion; 11. a secondary seal.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Finally, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise direct contact between the first and second features through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
Referring to fig. 1, a schematic structural diagram of a millstone material conveying valve with an autonomous dustproof valve rod provided by the invention is shown. This mill material transfer valve includes: a valve body 1, a valve cover 2, a valve rod 3, a rotating arm 4, a valve plate (not shown in the figure, connected with the other end of the rotating arm 4) and a sealing part. The valve body 1 and the valve cap 2 are fastened to each other, the valve rod 3 penetrates through a valve cap hole on the valve cap for assembly connection, the rotating arm 4 is connected with the lower end of the valve rod 3, the rotating arm 4 is located between the valve cap 2 and the valve body 1, and a gap exists between the valve rod 3 and the valve cap 2. In actual work, the rotating arm 4 is in precise compact fit with the valve rod 3 in an anti-rotation positioning mode, the opening and closing action of the material conveying valve is that the valve rod 3 performs circular arc motion on a valve cover hole of the valve cover 2 along a preset shaft center, the swing amplitude of the circular arc motion is that an air source cylinder arranged at the top of the valve rod 2 pushes the rotating arm 4, and thus the circular arc motion can drive the material conveying valve to be opened or closed.
In practice, due to the assembly between the valve rod 3 and the valve cover hole, a certain clearance margin is usually left between the two, so that during the opening and closing of the material conveying valve, due to gravity and negative pressure, the high-temperature and corrosive dust medium-containing gas conveyed from top to bottom in the material conveying valve is pumped to the gap between the valve cover 2 and the rotating arm 4 and is diffused all the way out along the clearance margin. During the diffusion process, the soot medium may also accumulate in the middle of the valve stem 3, causing the stem to jam and in severe cases even shear. Therefore, it is known that a reverse step hole 8 is formed at a position close to the inner side of the bonnet 2 in the bonnet hole, and a sealing means having a sealing function is installed in the reverse step hole 8, thereby preventing leakage of the fly ash medium to some extent.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a sealing component 5 in a millstone material conveying valve with an autonomous dust-proof valve rod according to the present invention. The sealing part 5 of the material conveying valve is arranged in a reverse stepped hole 8 and a gap between the valve rod 3 and the valve cover 2, namely, one part of the sealing part 5 is positioned in the reverse stepped hole 8, and the other part is positioned in the gap between the valve rod 3 and the valve cover 2. Wherein the sealing member 5 comprises a lower lip portion 6 and a lower sealing ring portion 7; the lower lip part 6 is in a funnel shape, and the lower lip part 6 is flexibly and tightly attached to the upper surface of the rotating arm 4; the lower sealing ring part 7 is arranged on the inner side of the upper part of the lower lip part 6, the lower sealing ring part 7 has a multi-channel blocking structure, and the lower sealing ring part is tightly held on the valve rod 3.
Specifically, the lower lip portion 6 includes a first edge portion and a second edge portion; the first edge part and the second edge part are both of annular structures; the first edge part is a vertical hollow cylinder with an upper opening and a lower opening, and the inner peripheral wall of the vertical hollow cylinder and the outer peripheral surface of the valve rod 3 are tightly attached to each other; the second rim part is similar to a vertical hollow cylinder with a bottom, and is integrally connected above the first rim part, the inner diameter of the second rim part is larger than that of the first rim part, the second rim part has a horizontal bearing structure, and the lower sealing ring part 7 is arranged above the horizontal bearing structure.
Preferably, the first edge has a first flexibility, the second edge has a second flexibility, the first flexibility is greater than the second flexibility, the second edge further comprises a horizontal bearing portion and a vertical resisting portion, the horizontal bearing portion is smoothly connected with the top end of the first edge, and the vertical resisting portion is arranged at the outermost side end of the horizontal bearing portion and is smoothly connected with the outermost side end; the lower sealing ring part 7 is connected with the horizontal bearing part and the vertical resisting part in an embedded manner. Because the flexibility of this first edge portion is greater than the flexibility of this second edge portion, consequently this first edge portion can carry out tighter laminating setting with this valve rod middle part, and this second edge portion also has sufficient rigidity simultaneously and bears this lower seal ring portion.
In one embodiment, the lower seal ring portion 7 includes a ring base body and a multi-channel barrier body disposed on the ring base body; the ring base body and the multi-channel barrier body are integrally arranged; the ring base body is provided with a vertical inner side circumferential surface matched with the peripheral surface of the valve rod, and the vertical inner side circumferential surface and the peripheral surface are mutually attached; the area of the multi-channel barrier close to the lower lip 6 is provided with a groove, and the lower lip 6 is partially embedded into the groove to realize the mutual embedded connection between the lower sealing ring part 7 and the lower lip 6.
Preferably, the multi-channel barrier is a multi-labyrinth-channel labyrinth barrier; the labyrinth type barrier comprises a barrier base body and a plurality of channel grooves arranged on the upper surface of the barrier base body; the plurality of channel grooves are communicated with each other and arranged on the upper surface of the blocking base body in a staggered and criss-cross state; the plurality of passage grooves extend entirely in a direction around the outer peripheral surface of the valve stem, and each of the passage grooves does not engage with the outer peripheral surface of the valve stem. The labyrinth type barrier with the multiple labyrinth channels can effectively prevent the ash medium from flowing unimpededly in the channel to directly reach the outside of the valve cover 2 while reducing the weight of the lower sealing ring part 7, thereby further improving the sealing performance of the sealing part 5.
Preferably, the multi-channel blocking body is a gradual-change blocking body; the gradual change type blocking body comprises a blocking base body and a plurality of gradual change structure bodies arranged on the upper surface of the blocking base body; the plurality of gradually-changed structural bodies comprise a plurality of barrier structural bodies with gradually-reduced volume along the direction extending from the inner side to the outer side, or a plurality of barrier structural bodies with gradually-increased volume along the direction extending from the inner side to the outer side; any two adjacent barrier structures of the plurality of barrier structures are smoothly connected. The gradual change formula retainer can also effectively prevent the direct outside that reaches the valve gap of passing through this lower seal ring portion of lime medium when reducing this lower seal ring portion weight to this seal part's leakproofness is further improved.
Preferably, the sealing part 5 is in interference connection with the outer peripheral surface of the valve rod; the interference generated by the sealing component 5 through the interference connection generates a radial force perpendicular to the outer peripheral surface of the valve rod on the valve rod, and the radial force directly influences the specific sealing pressure value of the sealing component on the valve rod. It can be seen that the interference fit between the sealing member 5 and the valve stem can effectively adjust the radial force and specific sealing pressure applied by the sealing member to the valve stem, so that the sealing member 5 can cooperate with a secondary sealing system (not shown) in the middle of the valve stem to form a better sealing protection.
Preferably, a reverse stepped hole 8 is formed at the bottom end of the valve cover at a position close to the sealing member 5; the seal member 5 further comprises an upper lip portion 9 and an upper seal ring portion 10; the upper lip part 9 has a stepped shape matching the reverse stepped hole 8, and the upper lip part 9 is disposed closely to the surface of the reverse stepped hole 8; the upper seal ring portion 10 is provided inside the upper step of the upper lip portion 9 and is in close contact with the outer peripheral surface of the stem 3.
Preferably, the inner side of the lower step of the upper lip 9 engages with the lower sealing ring 7; the inner side wall surface of the upper sealing ring part 10, which is attached to the outer peripheral surface of the valve rod 3, is provided with a plurality of dredging grooves, and the plurality of dredging grooves extend along the circumferential direction of the outer peripheral surface of the valve rod and are arranged in parallel; the upper side of the upper sealing ring part 10 is provided with a groove, and the upper lip part 9 is partially embedded into the groove to realize the mutual embedded connection between the upper sealing ring part 10 and the upper lip part.
Preferably, the sealing component 5 is embedded on the valve cover 2 in an interference fit manner; the valve cover 2 positions the sealing member 5 in a length-limited manner in the direction of the end face thereof.
Preferably, the lower end side of the sealing member 5 is further provided with a secondary sealing body 11, and the secondary sealing body 11 may or may not be in sealing contact with the upper end of the swivel arm 4. In the case where the secondary sealing body 11 is provided, the lower lip portion 6 may also be out of contact with the upper end surface of the rotating arm 4, and the secondary sealing body 11 not only can form an effective mechanical support for the sealing member 5 to prevent the sealing member from being irreversibly deformed during use, but also can provide secondary sealing protection for the valve stem, thereby greatly reducing the probability of occurrence of leakage of the dust medium.
Preferably, the lower lip portion 6 and the lower sealing ring portion 7 are made of different types of elastic materials, and the lower lip portion 6 and the lower sealing ring portion 7 made of the elastic materials can not only improve the close sealing performance of the two components relative to the valve rod 3, but also effectively improve the high temperature resistance, the high pressure resistance and the wear resistance of the two components.
During the intermittent rotation of the valve rod 3, the lower lip part 6 of the sealing part 5 frequently rubs against the rotating arm, which can cause problems of abrasion and insufficient radial force, but because the lower lip part is assembled with the rotating arm and is provided with larger compensation parameters in advance and the pressure of the conveyed material medium is added, the lower lip part is continuously pushed to automatically compensate and form an autonomous seal; in addition, the labyrinth type block body with multiple labyrinth channels or the gradual change type block body in the lower sealing ring part 7 can effectively block the dust medium and the gas outside the valve rod 3, so that the bottom and the middle of the valve rod 3 are always kept from being invaded by foreign matters such as the dust medium, the air cylinder can smoothly push the valve rod 3 to move, the service life of the valve rod is prolonged, and the service life of the material conveying valve is indirectly prolonged.
As can be seen from the above description of the embodiment, the millstone material conveying valve with the self-dustproof valve rod adopts the sealing component 5 with the active dustproof function to perform active dustproof sealing on the lower part of the valve rod 3; the sealing component 5 with the active dustproof function can be tightly attached to the valve rod 3 body in a natural state and can perform adaptive sealing adjustment along with the working state of the valve rod 3 in real time, so that active dustproof sealing among the valve cover 2, the rotating arm 4 and the valve rod 3 is realized; the sealing part 5 with the active dustproof function also has an automatic compensation function, when the sealing part 5 is abraded, the sealing part 5 can automatically compensate the gap generated by abrasion under the pushing of the pressure of a transmission medium in the grinding disc material conveying valve, so that the sealing part 5 can always cling to the upper surface of the rotating arm 4 and clasp the valve rod 3 to form effective dustproof sealing; the sealing component 5 with the active dustproof function can also ensure that the material conveying valve does not leak materials in the working process, so that the condition that a secondary sealing system of the material conveying valve is blocked by a dust medium cannot occur in the operation process of the material conveying valve, the abrasion and the radial stress state of the valve rod 3 are further slowed down, the resistance of the millstone material conveying valve in the opening and closing action process is reduced, and the working smoothness of the material conveying valve is improved; finally, this sealing member 5 with initiative dustproof function has compact structure and the advantage that the component part is few, and it can reduce occupation space and prolong the holistic life of material transfer valve effectively.
Claims (10)
1. A millstone material conveying valve with an autonomous dustproof valve rod, which comprises a valve body, a valve cover, a valve rod and a rotating arm,
the valve body and the valve cover are mutually fastened and connected, the valve rod penetrates through a valve cover hole of the valve cover to be assembled and connected, the rotating arm is connected with the lower end of the valve rod, the rotating arm is positioned between the valve cover and the valve body, and a gap is formed between the valve rod and the valve cover,
it is characterized in that the preparation method is characterized in that,
a sealing part is arranged in a gap between the valve rod and the valve cover;
the seal member includes a lower lip portion and a lower seal ring portion;
the lower sealing ring portion is arranged on the inner side of the upper portion of the lower lip portion, is provided with a multi-channel blocking structure, and is tightly attached to and tightly held on the valve rod.
2. The abrasive disc material delivery valve with autonomous dust-proof valve stem of claim 1, wherein:
the lower lip portion is funnel-shaped and comprises a first edge portion and a second edge portion; and the lower lip part is flexibly and closely attached to the rotating arm;
the first edge and the second edge are both of annular structures;
the first edge part is a vertical hollow cylinder, and the inner side peripheral wall of the vertical hollow cylinder and the outer peripheral surface of the valve rod are tightly attached to each other;
the second rim portion is disposed above the first rim portion in a connected manner, and has a horizontal carrier structure above which the lower seal ring portion is disposed.
3. The abrasive disc material delivery valve with autonomous dust-proof valve stem of claim 2, wherein:
the first rim portion having a first degree of flexibility and the second rim portion having a second degree of flexibility,
the first degree of flexibility is greater than the second degree of flexibility,
the second edge part further comprises a horizontal bearing part and a vertical resisting part, the horizontal bearing part is smoothly connected with the upper top end of the first edge part, and the vertical resisting part is arranged at the outermost side end of the horizontal bearing part and is smoothly connected with the outermost side end;
the lower sealing ring part is connected with the horizontal bearing part and the vertical resisting part in an embedded mode.
4. The abrasive disc material delivery valve with autonomous dust-proof valve stem of claim 1, wherein:
the lower seal ring part comprises a ring base body and a multi-channel barrier body arranged on the ring base body;
the ring base seat body and the multi-channel barrier body are integrally arranged;
the ring base body is provided with a vertical inner side peripheral surface matched with the peripheral surface of the valve rod, and the vertical inner side peripheral surface and the peripheral surface are mutually attached;
the multichannel baffle body is close to the region of lower lip portion is provided with the recess, lower lip portion partly imbeds in the recess to the realization lower seal ring portion with mutual gomphosis between the lower lip portion is connected.
5. The abrasive disc material delivery valve with autonomous dust-proof valve stem of claim 4, wherein:
the multi-channel blocking body is a multi-labyrinth-channel labyrinth type blocking body;
the labyrinth type barrier with the multiple labyrinth channels comprises a barrier base body and a plurality of channel grooves arranged on the upper surface of the barrier base body;
the plurality of channel grooves are communicated with each other and arranged on the upper surface of the blocking base body in a staggered and criss-cross state;
the plurality of passage grooves integrally extend in a direction surrounding an outer peripheral surface of the valve stem, and each of the passage grooves does not engage with the outer peripheral surface of the valve stem.
6. The abrasive disc material delivery valve with autonomous dust-proof valve stem of claim 4, wherein:
the multi-channel barrier is a gradual change type barrier;
the gradual change is that the barrier body comprises a barrier base body and a plurality of gradual change structural bodies arranged on the upper surface of the barrier base body;
the plurality of gradually-changed structural bodies comprise a plurality of barrier structural bodies with gradually-reduced volumes along the direction extending from the inner side to the outer side, or a plurality of barrier structural bodies with gradually-increased volumes along the direction extending from the inner side to the outer side;
and any two adjacent barrier structures in the plurality of barrier structures are smoothly connected.
7. The abrasive disc material delivery valve with autonomous dust-proof valve stem of claim 1, wherein:
the sealing component is in interference connection with the outer peripheral surface of the valve rod;
the interference generated by the sealing component through the interference connection generates a radial force perpendicular to the outer peripheral surface of the valve rod on the valve rod, and the radial force directly influences the sealing specific pressure value of the sealing component on the valve rod.
8. The abrasive disc material delivery valve with autonomous dust-proof valve stem of claim 1, wherein:
a reverse step hole is formed at the position, close to the sealing part, of the bottom end of the valve cover;
the seal member further includes an upper lip portion and an upper seal ring portion;
the upper lip part has a step shape matching the reverse step hole, and the upper lip part is disposed against a surface of the reverse step;
the upper sealing ring portion is arranged on the inner side of the upper step of the upper lip portion and is tightly attached to the outer peripheral surface of the valve rod.
9. The abrasive disc material delivery valve with autonomous dust-proof valve stem of claim 8, wherein:
the inner side of the lower step of the upper lip part is engaged with the lower seal ring part;
the inner side wall surface of the upper sealing ring part, which is attached to the outer peripheral surface of the valve rod, is provided with a plurality of dredging guide grooves,
the dredging grooves extend along the circumferential direction of the outer circumferential surface of the valve rod and are arranged in parallel;
the upper side of the upper sealing ring is provided with a groove, and the upper lip edge part is partially embedded into the groove so as to realize mutual embedded connection between the upper sealing ring part and the upper lip edge part.
10. The abrasive disc material delivery valve with autonomous dust-proof valve stem of claim 1, wherein:
the sealing component is embedded on the valve cover in an interference fit mode;
the valve cover limits and positions the sealing component in the direction of the end face of the valve cover relative to the length;
alternatively, the first and second electrodes may be,
a secondary sealing body is further arranged on the lower end side of the sealing component;
alternatively, the first and second electrodes may be,
the lower lip portion and the lower seal ring portion are made of different types of elastic materials respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921259923.3U CN210372276U (en) | 2019-08-06 | 2019-08-06 | Grinding disc material conveying valve with self-dustproof valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921259923.3U CN210372276U (en) | 2019-08-06 | 2019-08-06 | Grinding disc material conveying valve with self-dustproof valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210372276U true CN210372276U (en) | 2020-04-21 |
Family
ID=70248953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921259923.3U Active CN210372276U (en) | 2019-08-06 | 2019-08-06 | Grinding disc material conveying valve with self-dustproof valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210372276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285258A (en) * | 2019-08-06 | 2019-09-27 | 四川省科能工业设备制造有限公司 | A kind of mill material transfer valve of the autonomous dust protected valve rod of band |
-
2019
- 2019-08-06 CN CN201921259923.3U patent/CN210372276U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285258A (en) * | 2019-08-06 | 2019-09-27 | 四川省科能工业设备制造有限公司 | A kind of mill material transfer valve of the autonomous dust protected valve rod of band |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210372276U (en) | Grinding disc material conveying valve with self-dustproof valve rod | |
| US7429028B2 (en) | Valve, exhaust gas recirculation control valve and valve assembling method | |
| US4321750A (en) | Chain guide for a chain saw | |
| CN102518823B (en) | Valve seat sealing structure | |
| CN209977301U (en) | Four-valve-clack type friction-free ball valve | |
| KR20200023230A (en) | Two-way valve | |
| CN115451152A (en) | Inflatable diaphragm ball valve | |
| CN212775566U (en) | Novel oil seal | |
| CN209977308U (en) | Non-interference guide valve core assembly and non-friction ball valve | |
| CN210770625U (en) | Valve rod sealing structure and valve | |
| CN210372277U (en) | Abrasive disc type material conveying valve with self-tightening sealing valve rod | |
| CN112361005A (en) | Wear-resisting shear valve with washing function | |
| CN216519722U (en) | Valve seat sealing structure | |
| CN214331231U (en) | Anti-deformation dustproof sealing ring for bearing | |
| CN208281519U (en) | Low opening and closing resistance butterfly valve | |
| CN220470630U (en) | Spiral floating oil seal | |
| CN217559037U (en) | Butterfly valve with good corrosion resistance | |
| CN212509579U (en) | Electric double-sealing compound valve | |
| CN109058463A (en) | A kind of wear-resisting type rotary shaft lip seal device of forced-convection heat transfer | |
| CN211039766U (en) | Wear-resistant ball valve | |
| CN201575154U (en) | Electromagnetic valve provided with embedded type composite material single piston ring | |
| CN213808952U (en) | Wear-resistant shear valve with flushing function | |
| CN217003124U (en) | Hard-to-hard metal spherical sealing butterfly valve | |
| CN220600496U (en) | Dustproof sealing structure of high-low temperature alternating anti-lock ball valve | |
| CN112112702B (en) | Valve rotating mechanism and engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |