CN215806546U - Check valve for preventing leakage - Google Patents
Check valve for preventing leakage Download PDFInfo
- Publication number
- CN215806546U CN215806546U CN202121820254.XU CN202121820254U CN215806546U CN 215806546 U CN215806546 U CN 215806546U CN 202121820254 U CN202121820254 U CN 202121820254U CN 215806546 U CN215806546 U CN 215806546U
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- Prior art keywords
- valve
- valve body
- spring
- fixedly connected
- inner cavity
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- 238000007789 sealing Methods 0.000 claims abstract description 39
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 12
- 238000001125 extrusion Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 9
- 230000032683 aging Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a leakage-proof check valve which comprises a valve body, wherein a valve seat is fixedly arranged at the center of an inner cavity of the valve body, a valve cover is fixedly connected to the top of the valve body, a valve plug is movably connected to the bottom of the inner cavity of the valve cover, a first spring is fixedly sleeved on the surface of the bottom of the valve cover, and the bottom of the first spring is fixedly connected to the bottom of the surface of the valve plug. The check valve has the advantages of preventing leakage and avoiding backflow by matching the valve body, the pressure rod, the fastening bolt I, the fastening nut, the spring II, the spring I, the connecting pipe, the sealing gasket, the groove, the extrusion plate, the spring III, the mounting groove and the sealing bulge, and solves the problems that the existing check valve is poor in sealing performance and easy to cause leakage of a conveying medium in the process of connecting pipelines, and meanwhile, in the long-time use process, the check structure is easy to age, so that the medium backflow phenomenon can be caused, and the use requirements cannot be met.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a check valve capable of preventing leakage.
Background
The check valve is a valve whose opening and closing member is a circular valve clack and acts by self weight and medium pressure to block medium backflow, belonging to the automatic valve class, also called check valve, one-way valve, backflow valve or isolating valve, the valve clack motion mode is divided into lifting type and swing type, the lifting type check valve is similar to the structure of the stop valve, only lacks a valve rod for driving the valve clack, medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side), when the inlet pressure is greater than the sum of the weight of the valve clack and flow resistance thereof, the valve is opened, otherwise, the valve is closed when the medium flows backwards.
The sealing performance of the existing check valve is poor, the condition of leakage of a conveying medium is easily caused in the process of connecting pipelines, and meanwhile, in the long-time use process, the check structure is easy to age, so that the medium backflow phenomenon can be caused, and the use requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an anti-leakage check valve which has the advantages of preventing leakage and avoiding backflow, and solves the problems that the existing check valve is poor in sealing performance, conveying media are easy to leak in the process of connecting pipelines, and meanwhile, a non-return structure is easy to age in the long-time use process, so that the phenomenon of medium backflow is caused, and the use requirements cannot be met.
In order to achieve the purpose, the utility model provides the following technical scheme: a check valve for preventing leakage comprises a valve body, wherein a valve seat is fixedly installed at the center of an inner cavity of the valve body, a valve cover is fixedly connected to the top of the valve body, a valve plug is movably connected to the bottom of the inner cavity of the valve cover, a first spring is fixedly sleeved on the surface of the bottom of the valve cover, the bottom of the first spring is fixedly connected to the bottom of the surface of the valve plug, a pressure lever is movably connected to the top of the right side of the inner cavity of the valve body, the other end of the pressure lever extends to the right side of the top of the valve plug and is in sliding contact with the surface of the valve plug, a second spring is fixedly connected to the center of the top of the pressure lever, one end, far away from the pressure lever, of the second spring is fixedly connected to the top of the right side of the inner cavity of the valve body, connecting pipes are arranged between the inlet end and the outlet end of the valve body, sealing gaskets are arranged between the two connecting pipes and the inlet end and the outlet end of the valve body, sealing bulges are fixedly connected to outer rings at two sides of the sealing gaskets, the connecting pipe all sets up the recess that uses with sealed protruding cooperation between advancing the end and going out the end with the valve body, the valve body advances all around of end and going out the end and is located the groove and has all seted up the mounting groove, one side fixedly connected with spring three that the recess was kept away from to the mounting groove inner chamber, one side fixedly connected with stripper plate that spring three is close to the recess, one side that spring three was kept away from to the stripper plate is with sealed pad in close contact with.
Preferably, the pressure lever is movably connected with the top on the right side of the inner cavity of the valve body through a rotating shaft, and reinforcing ribs are fixedly connected to the left side of the top of the valve body and the right side of the bottom of the valve body.
Preferably, the outer ring of the inlet end and the outer ring of the outlet end of the valve body are provided with a first fastening bolt in a penetrating mode, one end of the first fastening bolt penetrates through the outer ring of the connecting pipe, and a fastening nut is sleeved on the first fastening bolt in a threaded mode.
Preferably, the two sides of the top of the valve cover are provided with a second fastening bolt in a penetrating mode, and the bottom of the second fastening bolt penetrates through the top of the valve body and is in threaded connection with the top of the valve body.
Preferably, the outer ring on one side of the sealing gasket is penetrated and provided with a mounting hole matched with the fastening bolt for use, and the centers of the opposite sides of the two sealing gaskets are penetrated and provided with round holes matched with the inlet end and the outlet end of the valve body for use.
Compared with the prior art, the utility model has the following beneficial effects:
1. the check valve has the advantages of preventing leakage and avoiding backflow by matching the valve body, the pressure rod, the fastening bolt I, the fastening nut, the spring II, the spring I, the connecting pipe, the sealing gasket, the groove, the extrusion plate, the spring III, the mounting groove and the sealing bulge, and solves the problems that the existing check valve is poor in sealing performance and easy to cause leakage of a conveying medium in the process of connecting pipelines, and meanwhile, in the long-time use process, the check structure is easy to age, so that the medium backflow phenomenon can be caused, and the use requirements cannot be met.
2. According to the utility model, through the use of the groove and the sealing protrusion, the contact area of the inlet end and the outlet end of the valve body when being connected with the connecting pipe can be increased, the sealing gasket can be extruded when being connected, the sealing effect is improved, the sealing gasket can be further extruded through the use of the spring III and the extrusion plate, the sealing effect is improved again, the connecting pipe can be connected with the valve body through the use of the fastening bolt I and the fastening nut, the strength of the valve body can be improved through the use of the reinforcing rib, the valve plug can be extruded through the use of the compression bar and the spring II, and the backflow phenomenon caused in the use process is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of A of FIG. 1 according to the present invention;
fig. 3 is a side view structural view of the gasket of the present invention.
In the figure: the valve comprises a valve body 1, a valve seat 2, a valve plug 3, a pressure lever 4, a fastening bolt I5, a fastening nut 6, a spring II 7, a spring I8, a valve cover 9, a connecting pipe 10, a sealing gasket 11, a groove 12, a squeezing plate 13, a spring III 14, a mounting groove 15, a sealing bulge 16, a round hole 17 and a mounting hole 18.
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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "connected", and the like are to be construed broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, a check valve for preventing leakage comprises a valve body 1, a valve seat 2 is fixedly installed at the center of an inner cavity of the valve body 1, a valve cover 9 is fixedly connected to the top of the valve body 1, a valve plug 3 is movably connected to the bottom of the inner cavity of the valve cover 9, a first spring 8 is fixedly sleeved on the surface of the bottom of the valve cover 9, the bottom of the first spring 8 is fixedly connected to the bottom of the surface of the valve plug 3, a pressure lever 4 is movably connected to the top of the right side of the inner cavity of the valve body 1, the other end of the pressure lever 4 extends to the right side of the top of the valve plug 3 and is in sliding contact with the surface of the valve plug, a second spring 7 is fixedly connected to the center of the top of the pressure lever 4, one end of the second spring 7, which is far away from the pressure lever 4, is fixedly connected to the top of the right side of the inner cavity of the valve body 1, the valve plug 3 can be extruded by using the pressure lever 4 and the second spring 7, so as to avoid backflow phenomenon in the using process, a connecting pipe 10 is arranged between an inlet end and an outlet end of the valve body 1, sealing gaskets 11 are arranged between the two connecting pipes 10 and the inlet end and the outlet end of the valve body 1, sealing protrusions 16 are fixedly connected to outer rings on two sides of each sealing gasket 11, grooves 12 matched with the sealing protrusions 16 are formed between the connecting pipes 10 and the inlet end and the outlet end of the valve body 1, through the use of the grooves 12 and the sealing protrusions 16, the contact area of the inlet end and the outlet end of the valve body 1 when connected with the connecting pipes 10 can be increased, the sealing gaskets 11 can be extruded when connected, the sealing effect is improved, mounting grooves 15 are formed around the inlet end and the outlet end of the valve body 1 and positioned at the grooves 12, springs three 14 are fixedly connected to one sides, away from the grooves 12, of inner cavities of the mounting grooves 15, extrusion plates 13 are fixedly connected to one sides, close to the grooves 12, of the springs three 14 and the extrusion plates 13, the sealing gaskets 11 can be further extruded, and the sealing effect is improved again, one side of the extrusion plate 13, which is far away from the third spring 14, is tightly contacted with the sealing gasket 11;
the pressure lever 4 is movably connected with the top of the right side of the inner cavity of the valve body 1 through a rotating shaft, reinforcing ribs are fixedly connected to the left side of the top and the right side of the bottom of the valve body 1, and the strength of the valve body 1 can be improved through the reinforcing ribs;
the outer rings of the inlet end and the outlet end of the valve body 1 are provided with a first fastening bolt 5 in a penetrating mode in a surrounding mode, one end of the first fastening bolt 5 penetrates through the outer ring of the connecting pipe 10 and is sleeved with a fastening nut 6 in a threaded mode, and the connecting pipe 10 can be connected with the valve body 1 through the first fastening bolt 5 and the fastening nut 6;
two sides of the top of the valve cover 9 are provided with a second fastening bolt in a penetrating manner, and the bottom of the second fastening bolt penetrates to the top of the valve body 1 and is in threaded connection with the top;
an outer ring on one side of each sealing gasket 11 is provided with a mounting hole 18 matched with the fastening bolt I5 in a penetrating manner, and the centers of the opposite sides of the two sealing gaskets 11 are provided with round holes 17 matched with the inlet end and the outlet end of the valve body 1 in a penetrating manner;
through valve body 1, depression bar 4, fastening bolt 5, fastening nut 6, spring two 7, spring 8, connecting pipe 10, sealed pad 11, recess 12, stripper plate 13, spring three 14, mounting groove 15 and sealed protruding 16's cooperation is used, possess the advantage that prevents to leak and avoid the backward flow, it is relatively poor to have solved current check valve leakproofness, cause the condition of carrying the medium leakage very easily at connecting tube's in-process, and simultaneously, in long-time use, the non return structure is ageing very easily, and then can cause the phenomenon of medium backward flow, can't satisfy user demand's problem.
When the valve is used, a medium enters the inlet end of the valve body 1 from the left connecting pipe 10 and then passes through the bottom of the valve plug 3, the medium is jacked upwards by the impact force of the medium, the spring I8 is compressed, at the moment, the medium can flow out from the outlet end of the valve body 1 at the position of the valve seat 2, when the medium enters the outlet end of the valve body 1 from the right connecting pipe 10, water flows in from the upper part of the valve plug 3, the spring I8 is restored and extrudes the valve plug 3 to be tightly attached to the valve seat 2, the non-return effect is achieved, when the spring I8 is aged, the spring II 7 extends and downwards extrudes the valve plug 3 to be tightly attached to the valve seat 2, the non-return effect is achieved, the grooves 12 and the sealing bulges 16 are used, the contact area of the inlet end and the outlet end of the valve body 1 when being connected with the connecting pipe 10 can be increased, the sealing gasket 11 can be extruded when being connected, the sealing effect is improved, and the sealing effect can be further extruded through the use of the spring III 14 and the extrusion plate 13, again improving the sealing effect.
In summary, the following steps: this prevent check valve of leakage, through valve body 1, depression bar 4, fastening bolt 5, fastening nut 6, spring two 7, spring 8, connecting pipe 10, sealed pad 11, recess 12, stripper plate 13, spring three 14, mounting groove 15 and sealed protruding 16's cooperation is used, it is relatively poor to have solved current check valve leakproofness, cause the condition of carrying the medium leakage very easily at connecting tube's in-process, and simultaneously, in long-time use, the non return structure is ageing very easily, and then can cause the phenomenon of medium backward flow, can't satisfy user demand's problem.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A check valve for preventing leakage, comprising a valve body (1), characterized in that: the valve comprises a valve body (1), a valve seat (2) is fixedly arranged at the center of an inner cavity of the valve body (1), a valve cover (9) is fixedly connected to the top of the valve body (1), a valve plug (3) is movably connected to the bottom of the inner cavity of the valve cover (9), a first spring (8) is sleeved on the surface of the bottom of the valve cover (9), the bottom of the first spring (8) is fixedly connected to the bottom of the surface of the valve plug (3), a compression rod (4) is movably connected to the top on the right side of the inner cavity of the valve body (1), the other end of the compression rod (4) extends to the right side of the top of the valve plug (3) and is in sliding contact with the right side of the top of the valve plug, a second spring (7) is fixedly connected to the center of the top of the compression rod (4), one end, far away from the compression rod (4), of the second spring (7) is fixedly connected to the top on the right side of the inner cavity of the valve body (1), and a connecting pipe (10) is arranged between the inlet end and the outlet end of the valve body (1), all be provided with sealed pad (11) between the end of advancing and the play of two connecting pipes (10) and valve body (1), the equal fixedly connected with of outer lane sealed protruding (16) of sealed pad (11) both sides, all offer recess (12) that use with sealed protruding (16) cooperation between the end of advancing and the play of connecting pipe (10) and valve body (1), all seted up mounting groove (15) around and be located recess (12) department of valve body (1) advancing end and play end, one side fixedly connected with spring three (14) of recess (12) are kept away from to mounting groove (15) inner chamber, one side fixedly connected with stripper plate (13) that spring three (14) are close to recess (12), one side and sealed pad (11) in close contact of spring three (14) are kept away from in stripper plate (13).
2. A leak-proof check valve as defined in claim 1, wherein: the pressure lever (4) is movably connected with the top on the right side of the inner cavity of the valve body (1) through a rotating shaft, and reinforcing ribs are fixedly connected to the left side of the top of the valve body (1) and the right side of the bottom of the valve body.
3. A leak-proof check valve as defined in claim 1, wherein: the valve body (1) enters the outer lane of end and play end and all encircles and run through and be provided with fastening bolt (5), the one end of fastening bolt (5) runs through the outer lane and the threaded sleeve of connecting pipe (10) and is equipped with fastening nut (6).
4. A leak-proof check valve as defined in claim 1, wherein: and two sides of the top of the valve cover (9) are provided with a second fastening bolt in a penetrating manner, and the bottom of the second fastening bolt penetrates through the top of the valve body (1) and is in threaded connection with the top.
5. A leak-proof check valve as defined in claim 1, wherein: the outer ring of one side of each sealing gasket (11) penetrates through and is provided with a mounting hole (18) matched with the fastening bolt I (5) for use, and the centers of the opposite sides of the two sealing gaskets (11) are provided with round holes (17) matched with the inlet end and the outlet end of the valve body (1) for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121820254.XU CN215806546U (en) | 2021-08-05 | 2021-08-05 | Check valve for preventing leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121820254.XU CN215806546U (en) | 2021-08-05 | 2021-08-05 | Check valve for preventing leakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215806546U true CN215806546U (en) | 2022-02-11 |
Family
ID=80128659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121820254.XU Expired - Fee Related CN215806546U (en) | 2021-08-05 | 2021-08-05 | Check valve for preventing leakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215806546U (en) |
-
2021
- 2021-08-05 CN CN202121820254.XU patent/CN215806546U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |