CN216843236U - Valve and liquid level meter for preventing valve rod from rusting - Google Patents
Valve and liquid level meter for preventing valve rod from rusting Download PDFInfo
- Publication number
- CN216843236U CN216843236U CN202220038692.9U CN202220038692U CN216843236U CN 216843236 U CN216843236 U CN 216843236U CN 202220038692 U CN202220038692 U CN 202220038692U CN 216843236 U CN216843236 U CN 216843236U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- valve body
- bushing
- rod
- 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 prevent valve and level gauge of valve rod corrosion belongs to level gauge technical field, and the level gauge includes valve body, valve rod, bush and valve nut. The bushing is in threaded connection with the valve rod, the valve nut is in threaded connection with the valve body, a supporting part in contact with the top surface of the valve body is arranged on the outer side of the bushing, and a pressing part corresponding to the supporting part is arranged on the top of the valve nut; by screwing the valve nut, the pressing part abuts against the top surface of the supporting part and applies downward acting force to the supporting part, so that the bushing is fixedly connected with the valve body. The utility model provides a prevent valve and level gauge of valve rod corrosion, through increasing bush and valve nut, be sliding fit with the threaded connection adjustment between valve rod and the valve body, greatly reduced the liquid of water delivery intracavity cause the corrosion to valve rod and valve body to fitting surface between valve rod and the valve body plays sealed effect, thereby effectively avoids the liquid of water delivery intracavity to cause the corrosion to the connecting thread of valve rod and bush, guarantees that the valve rod can normally rotate.
Description
Technical Field
The utility model belongs to the technical field of the level gauge, more specifically say, relate to a prevent valve of valve rod corrosion and adopt this level gauge of preventing valve of valve rod corrosion.
Background
The height of the liquid medium in the container is called the liquid level, and the instrument for measuring the liquid level is called a liquid level meter. The liquid level meter is one of level meters. In the chemical production field, the liquid level meter is used for realizing the real-time monitoring of the liquid level of the pressure vessel, and meanwhile, the automatic control of the liquid level can be realized by utilizing signal remote transmission interlocking control. The liquid level meter is provided with a valve which plays a role in blocking and releasing liquid in the liquid level meter.
The main structure of the valve comprises a valve body and a valve rod. The inside of valve body is equipped with water delivery chamber and the valve rod installation cavity of mutual intercommunication, and the water delivery chamber sets up along the horizontal direction, and the valve rod installation cavity keeps perpendicular and opening up with the water delivery chamber, is equipped with the internal thread with valve rod threaded connection on the inner wall of valve rod installation cavity, realizes opening or closing of water delivery chamber through rotating the valve rod. In the in-service use process, the liquid in the water delivery intracavity can always with the screw thread contact between valve rod and the valve body to lead to the fact the corrosion to the screw thread between valve rod and the valve body, lead to unable rotation valve rod, influence the normal work of valve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prevent valve of valve rod corrosion aims at solving current valve and has the screw thread between valve rod and the valve body to take place the corrosion easily, influences the problem of the normal work of valve.
In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a valve for preventing corrosion of a valve stem, comprising:
the valve comprises a valve body, a valve rod and a valve body, wherein a water delivery cavity and a valve rod installation cavity which are communicated with each other are arranged in the valve body; the outer side wall of the upper end of the valve body is provided with an external thread;
the valve rod is installed in the valve rod installation cavity along the vertical direction and is in sliding fit with the valve rod installation cavity; the lower end of the valve rod is used for plugging the water delivery cavity, and the upper end of the valve rod is provided with external threads;
the bushing is sleeved on the outer side of the valve rod, an inner thread matched with the outer thread of the valve rod is arranged on the inner wall of the bushing, and a supporting part is arranged on the outer side of the bushing and is in contact with the top surface of the valve body; and
the valve nut is sleeved on the outer side of the bushing, an inner thread matched with the outer thread of the valve body is arranged on the inner wall of the valve nut, and a pressing part corresponding to the supporting part is arranged at the top of the valve nut;
and by screwing the valve nut, the pressing part abuts against the top surface of the supporting part and exerts downward acting force on the supporting part, so that the bushing is fixedly connected with the valve body.
In one possible implementation, the support portion is an annular member.
In one possible implementation, the support portion is integrally formed with the bushing.
In a possible implementation manner, the lower end surface of the support part is provided with an anti-rotation pin, and the top surface of the valve body is correspondingly provided with a pin hole which is matched with the anti-rotation pin for installation.
In a possible realization, the top surface of the valve body is provided with a positioning groove for positioning the bushing.
In one possible implementation, a sealing member is installed between the valve body and the valve rod, and the sealing member is located in the positioning groove.
In one possible implementation, the sealing element is a flexible element located at the bottom of the bushing; the bushing applies a downward force to the flexible member.
In one possible implementation, the sealing element is a graphite pad that is fitted over the valve stem.
In a possible implementation manner, a through hole communicated with the water delivery cavity is formed in the bottom of the valve body, and a sealing rod in sliding fit with the through hole is formed in the bottom of the valve rod.
Compared with the prior art, the scheme shown in the embodiment of the application is that the valve for preventing the valve rod from being corroded, the valve rod is in sliding fit with a valve rod installation cavity in the valve body, the valve rod is sleeved with the bushing and the valve nut in sequence from inside to outside, the bushing is in threaded connection with the valve rod, the valve nut is in threaded connection with the valve body, the outer side of the bushing is provided with the supporting part in contact with the top surface of the valve body, and the top of the valve nut is provided with the pressing part correspondingly arranged with the supporting part; by screwing the valve nut, the pressing part abuts against the top surface of the supporting part and applies downward acting force to the supporting part, so that the bushing is fixedly connected with the valve body. The utility model provides a prevent valve of valve rod corrosion is through increasing bush and valve nut, adjusts the threaded connection between valve rod and the valve body for sliding fit, and greatly reduced the liquid of water delivery intracavity causes the corrosion to valve rod and valve body to fitting surface between valve rod and the valve body plays sealed effect, thereby effectively avoids the liquid of water delivery intracavity to cause the corrosion to the connecting thread of valve rod and bush, guarantees that the valve rod can normal rotation.
Another object of the present invention is to provide a liquid level meter, which includes a liquid level meter body and further includes a valve for preventing the valve rod from being corroded.
Compared with the prior art, the scheme shown in the embodiment of the application is that the liquid level meter adopts the valve for preventing the valve rod from being rusted, the valve rod is in sliding fit with a valve rod installation cavity in the valve body, the valve rod is sequentially sleeved with the bushing and the valve nut from inside to outside, the bushing is in threaded connection with the valve rod, the valve nut is in threaded connection with the valve body, the outer side of the bushing is provided with the supporting part in contact with the top surface of the valve body, and the top of the valve nut is provided with the pressing part which is arranged corresponding to the supporting part; by screwing the valve nut, the pressing part abuts against the top surface of the supporting part and applies downward acting force to the supporting part, so that the bushing is fixedly connected with the valve body. The utility model provides a prevent valve of valve rod corrosion is through increasing bush and valve nut, adjusts the threaded connection between valve rod and the valve body for sliding fit, and greatly reduced the liquid of water delivery intracavity causes the corrosion to valve rod and valve body to fitting surface between valve rod and the valve body plays sealed effect, thereby effectively avoids the liquid of water delivery intracavity to cause the corrosion to the connecting thread of valve rod and bush, guarantees that the valve rod can normal rotation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional structural view of a valve for preventing corrosion of a valve rod according to a first embodiment of the present invention;
fig. 2 is a schematic cross-sectional structural view of a valve body according to a first embodiment of the present invention;
fig. 3 is a schematic view of a partial cross-sectional structure of a valve for preventing corrosion of a valve rod according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a liquid level meter according to an embodiment of the present invention.
In the figure: 1. a valve body; 101. a water delivery cavity; 102. a valve stem mounting cavity; 103. positioning a groove; 104. a through hole; 105. a yielding groove; 2. a valve stem; 201. a sealing rod; 3. a bushing; 301. a support portion; 302. an anti-rotation pin; 4. a valve nut; 401. a pressing part; 5. a seal member; 6. the level gauge body.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and fig. 2, a valve for preventing corrosion of a valve stem according to the present invention will now be described. The valve for preventing the valve rod from being rusted comprises: valve body 1, valve rod 2, bush 3 and valve nut 4. A water delivery cavity 101 and a valve rod installation cavity 102 which are communicated with each other are arranged in the valve body 1; the outer side wall of the upper end of the valve body 1 is provided with an external thread; the valve rod 2 is installed in the valve rod installation cavity 102 along the vertical direction, and the valve rod 2 is in sliding fit with the valve rod installation cavity 102; the lower end of the valve rod 2 is used for plugging the water delivery cavity 101, and the upper end of the valve rod 2 is provided with external threads; the bushing 3 is sleeved on the outer side of the valve rod 2, the inner wall of the bushing 3 is provided with an internal thread which is matched with the external thread of the valve rod 2, the outer side of the bushing 3 is provided with a supporting part 301, and the supporting part 301 is contacted with the top surface of the valve body 1; the valve nut 4 is sleeved on the outer side of the bushing 3, the inner wall of the valve nut 4 is provided with an internal thread which is matched with the external thread of the valve body 1, and the top of the valve nut 4 is provided with a pressing part 401 which is arranged corresponding to the supporting part 301; by screwing the valve nut 4, the pressing portion 401 abuts against the top surface of the support portion 301 and applies a downward force to the support portion 301, thereby fixedly connecting the bush 3 to the valve body 1.
Compared with the prior art, the valve for preventing the valve rod from being rusted provided by the embodiment has the advantages that the valve rod 2 is in sliding fit with the valve rod installation cavity 102 in the valve body 1, the valve rod 2 is sleeved with the bushing 3 and the valve nut 4 from inside to outside in sequence, the bushing 3 is in threaded connection with the valve rod 2, the valve nut 4 is in threaded connection with the valve body 1, the outer side of the bushing 3 is provided with the supporting part 301 which is in contact with the top surface of the valve body 1, and the top of the valve nut 4 is provided with the pressing part 401 which is arranged corresponding to the supporting part 301; by screwing the valve nut 4, the pressing portion 401 abuts against the top surface of the support portion 301 and applies a downward force to the support portion 301, thereby fixedly connecting the bush 3 to the valve body 1. The utility model provides a prevent valve of valve rod corrosion is through increasing bush 3 and valve nut 4, be sliding fit with the threaded connection adjustment between valve rod 2 and the valve body 1, greatly reduced the liquid in the water delivery chamber 101 cause the corrosion to valve rod 2 and valve body 1, and the fitting surface between valve rod 2 and the valve body 1 plays sealed effect, thereby effectively avoid the liquid in the water delivery chamber 101 to cause the corrosion to the connecting thread of valve rod 2 with bush 3, guarantee that valve rod 2 can normally rotate.
In some embodiments, referring to fig. 1 and 2, the supporting portion 301 is a ring-shaped member. In this embodiment, the supporting portion 301 adopts an annular structure, and the contact area between the supporting portion 301 and the valve body 1 and the valve nut 4 is increased, so that the supporting portion 301 can bear a larger acting force, and the sealing performance between the supporting portion 301 and the valve body 1 and the valve nut 4 is ensured.
In some embodiments, referring to fig. 1 and 2, the supporting portion 301 is integrally formed with the bushing 3. In this embodiment, the supporting portion 301 and the bush 3 are integrally formed, so that the integrally formed structure has higher strength and is more durable.
In some embodiments, referring to fig. 3, an anti-rotation pin 302 is disposed on a lower end surface of the supporting portion 301, and a pin hole is correspondingly disposed on a top surface of the valve body 1 and is matched with the anti-rotation pin 302. In this embodiment, the number of the anti-rotation pins 302 is at least two, and is uniformly arranged in the circumferential direction of the bush 3. The anti-collision pin is a cylindrical pin, the anti-collision pin and the supporting portion 301 are of a split structure, and the lower end face of the supporting portion 301 is provided with a mounting hole for mounting the anti-collision pin. The anti-rotation pin 302 can effectively prevent the bush 3 from rotating relative to the valve body 1.
In some embodiments, referring to fig. 1 and 2, the top surface of the valve body 1 is provided with a positioning groove 103 for positioning the bushing 3. In this embodiment, the outer contour of the liner 3 is circular, and the positioning groove 103 is matched with the outer contour of the liner 3. The support portion 301 is located at a position near the middle of the liner 3, and the lower end of the liner 3 is located in the positioning groove 103. Through set up constant head tank 103 on valve body 1, not only play the positioning action to bush 3, can also promote the area of contact between bush 3 and the valve body 1 simultaneously, make bush 3 can bear bigger effort.
In some embodiments, referring to fig. 1 and 2, a sealing member 5 is installed between the valve body 1 and the valve stem 2, and the sealing member 5 is located in the positioning groove 103. In this embodiment, sealing member 5 is used for promoting the leakproofness between valve body 1 and the valve rod 2 to avoid the liquid in water delivery chamber 101 to spill over from between valve body 1 and the valve rod 2, avoid the water waste.
In some embodiments, referring to fig. 1 and 2, the sealing element 5 is a flexible element located at the bottom of the liner 3; the bush 3 exerts a downward force on the flexible member. In this embodiment, the depth of the positioning groove 103 is greater than the distance between the supporting portion 301 and the bottom surface of the bush 3. The valve nut 4 applies a downward force to the liner 3 by means of the pressing portion 401, thereby pressing the packing 5 downward, and elastically deforming the packing 5 so that the packing 5 abuts against the side wall of the positioning groove 103 and the outer circumferential surface of the valve stem 2, respectively. The sealing element 5 is positioned below the bushing 3, so that a layer of sealing is added between the connecting thread between the bushing 3 and the valve rod 2 and the water delivery cavity 101, and the sealing performance between the valve rod 2 and the valve body 1 is further improved.
In some embodiments, referring to fig. 1 and 2, the sealing element 5 is a graphite pad that fits over the valve stem 2. In this embodiment, the number of the graphite pads is plural, and the graphite pads are stacked from top to bottom in sequence. The operator can install the corresponding number of graphite pads according to actual need.
In some embodiments, referring to fig. 1 and 2, a through hole 104 communicating with the water delivery cavity 101 is formed at the bottom of the valve body 1, and a sealing rod 201 slidably engaged with the through hole 104 is formed at the bottom of the valve rod 2. In this embodiment, the diameter of the lower end of the valve rod 2 is larger than the diameter of the water delivery cavity 101, so that the valve rod 2 can be ensured to completely block the water delivery cavity 101. The lower end of the valve rod 2 is of a conical structure, and the bottom surface of the middle of the water delivery cavity 101 is provided with a conical surface which is matched with the valve rod 2. The through-hole 104 is provided coaxially with the stem mounting cavity 102. The sealing rod 201 is always in contact with the through hole 104, thereby ensuring sealing of the through hole 104. After the valve assembly is used for a long time, due to the fact that the friction force between the valve rod 2 and the valve body 1 is still increased due to the corrosion of liquid in the water delivery cavity 101 to the valve rod 2, and even the valve rod 2 and the valve body 1 are corroded together, in order to separate the valve rod 2 from the valve body 1, the valve nut 4 can be detached from the valve body 1 firstly, then the sealing rod 201 is acted upwards by means of other auxiliary tools, and the valve rod 2 is separated from the valve rod installation cavity 102.
In some embodiments, referring to fig. 1 and fig. 2, the valve body 1 is provided with a relief groove 105 coaxially disposed with the through hole 104. In this embodiment, in order to ensure the sealing property between the seal rod 201 and the valve body 1, the machining accuracy of the through hole 104 is required to be high. In order to reduce the difficulty and cost of machining, a relief groove 105 is formed in the bottom of the valve body 1. The aperture of the abdicating groove 105 is larger than that of the through hole 104, the matching area of the through hole 104 and the sealing rod 201 is reduced, and the abdicating groove 105 can meet the requirements only through a rough machining mode.
The utility model also provides a liquid level meter, including level gauge body 6, still include the valve of the rust of the valve rod of arbitrary foretell prevention. Referring to fig. 1 to 4, in the present embodiment, the valve for preventing the valve rod from being rusted is installed at two ends of the length direction of the liquid level gauge body 6. The both ends of level gauge body 6 are equipped with the external screw thread of valve cooperation installation with prevent the valve rod corrosion.
Compared with the prior art, the valve for preventing the valve rod from being rusted adopted by the liquid level meter provided by the embodiment has the advantages that the valve rod 2 is in sliding fit with the valve rod installation cavity 102 in the valve body 1, the valve rod 2 is sequentially sleeved with the bushing 3 and the valve nut 4 from inside to outside, the bushing 3 is in threaded connection with the valve rod 2, the valve nut 4 is in threaded connection with the valve body 1, the outer side of the bushing 3 is provided with the supporting part 301 in contact with the top surface of the valve body 1, and the top of the valve nut 4 is provided with the pressing part 401 corresponding to the supporting part 301; by screwing the valve nut 4, the pressing portion 401 abuts against the top surface of the support portion 301 and applies a downward force to the support portion 301, thereby fixedly connecting the bush 3 to the valve body 1. The utility model provides a prevent valve of valve rod corrosion is through increasing bush 3 and valve nut 4, be sliding fit with the threaded connection adjustment between valve rod 2 and the valve body 1, greatly reduced the liquid in the water delivery chamber 101 cause the corrosion to valve rod 2 and valve body 1, and the fitting surface between valve rod 2 and the valve body 1 plays sealed effect, thereby effectively avoid the liquid in the water delivery chamber 101 to cause the corrosion to the connecting thread of valve rod 2 with bush 3, guarantee that valve rod 2 can normally rotate.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A valve for preventing corrosion of a valve stem, comprising:
the valve comprises a valve body, a valve rod and a valve body, wherein a water delivery cavity and a valve rod installation cavity which are communicated with each other are arranged in the valve body; the outer side wall of the upper end of the valve body is provided with an external thread;
the valve rod is installed in the valve rod installation cavity along the vertical direction and is in sliding fit with the valve rod installation cavity; the lower end of the valve rod is used for plugging the water delivery cavity, and the upper end of the valve rod is provided with external threads;
the bushing is sleeved on the outer side of the valve rod, an inner thread matched with the outer thread of the valve rod is arranged on the inner wall of the bushing, and a supporting part is arranged on the outer side of the bushing and is in contact with the top surface of the valve body; and
the valve nut is sleeved on the outer side of the bushing, an inner thread matched with the outer thread of the valve body is arranged on the inner wall of the valve nut, and a pressing part corresponding to the supporting part is arranged at the top of the valve nut;
and by screwing the valve nut, the pressing part abuts against the top surface of the supporting part and applies downward acting force to the supporting part, so that the bushing is fixedly connected with the valve body.
2. A valve for preventing corrosion of a valve stem as defined in claim 1, wherein said support is an annular member.
3. The valve of claim 1, wherein the support is integrally formed with the bushing.
4. The valve of claim 1, wherein the support part has an anti-rotation pin on its lower end surface, and the valve body has a corresponding pin hole on its top surface for fitting with the anti-rotation pin.
5. The valve of claim 1, wherein the top surface of the valve body is provided with a positioning groove for positioning the bushing.
6. The valve of claim 5, wherein a seal is disposed between said valve body and said valve stem, said seal being disposed within said positioning groove.
7. The valve of claim 6, wherein said seal is a flexible member located at the bottom of said bushing; the bushing applies a downward force to the flexible member.
8. The valve of claim 7, wherein said seal is a graphite gasket fitted over said valve stem.
9. The valve of claim 1, wherein the bottom of the valve body is provided with a through hole communicated with the water delivery cavity, and the bottom of the valve rod is provided with a sealing rod in sliding fit with the through hole.
10. Gauge comprising a gauge body, characterized in that it further comprises a valve for preventing the corrosion of the valve stem according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220038692.9U CN216843236U (en) | 2022-01-06 | 2022-01-06 | Valve and liquid level meter for preventing valve rod from rusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220038692.9U CN216843236U (en) | 2022-01-06 | 2022-01-06 | Valve and liquid level meter for preventing valve rod from rusting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216843236U true CN216843236U (en) | 2022-06-28 |
Family
ID=82114320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220038692.9U Active CN216843236U (en) | 2022-01-06 | 2022-01-06 | Valve and liquid level meter for preventing valve rod from rusting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216843236U (en) |
-
2022
- 2022-01-06 CN CN202220038692.9U patent/CN216843236U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208764495U (en) | A kind of attachment device for water softener water pipe | |
| CN216843236U (en) | Valve and liquid level meter for preventing valve rod from rusting | |
| CN205226711U (en) | Corrosion resistant high -pressure quick -operation joint | |
| CN110792793A (en) | Gate valve | |
| CN211501699U (en) | Gate valve | |
| CN210922754U (en) | Adjustment structure for eliminating installation stress of glass plate liquid level meter | |
| CN213575689U (en) | Double-piece ball valve with improved structure | |
| CN109958802B (en) | Low-pressure fine-tuning built-in dead weight type safety valve | |
| CN210950166U (en) | Electric valve rod nut | |
| CN220930815U (en) | Lubricating oil supplementing device for motor bearing chamber | |
| CN219623826U (en) | Petroleum pipeline double-seal early warning monitoring structure | |
| CN212377276U (en) | Flange structure for mounting sensor | |
| CN213206575U (en) | Hard sealing stop valve | |
| CN220819305U (en) | Piston type putty isolator | |
| CN219932941U (en) | Oil tank subsea valve of transformer and transformer tank | |
| CN209245367U (en) | A kind of unidirectional grease pouring valve | |
| CN220102085U (en) | Butterfly valve with prevent sinking structure | |
| CN218294597U (en) | Well-sealed valve body | |
| CN216868144U (en) | High-sealing-performance grease injection valve nut plug | |
| CN221347897U (en) | High-temperature-resistant brass stop valve with graphite filler | |
| CN210770763U (en) | Bellows of gate valve | |
| CN214171366U (en) | Anti-leakage self-sealing valve | |
| CN212318818U (en) | Valve component with anti-rotation structure | |
| CN210770318U (en) | Pneumatic angle seat valve | |
| CN215445451U (en) | Stainless steel lining PTFE adapter flange of radar level gauge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |