CN213982488U - Pipeline negative pressure adjusting device - Google Patents
Pipeline negative pressure adjusting device Download PDFInfo
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- CN213982488U CN213982488U CN202022721433.XU CN202022721433U CN213982488U CN 213982488 U CN213982488 U CN 213982488U CN 202022721433 U CN202022721433 U CN 202022721433U CN 213982488 U CN213982488 U CN 213982488U
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Abstract
The utility model relates to a pipeline negative pressure adjusting device, which comprises a body and an air suction valve. The body is provided with a connecting seat and an installation cylinder, and liquid flows into the installation cylinder from the connecting seat and then flows out from the connecting seat. The air suction valve is arranged at a ventilation opening of the connecting seat and comprises a valve body, a valve rod component and a buoy. The valve body is arranged on the ventilation opening and is provided with an air inlet channel, and the air inlet channel can enable the inner space of the body to be communicated with the outside. When the pipeline normally conveys liquid, the floating cylinder floats upwards to enable the valve rod assembly to seal the air inlet channel; when the liquid level in the main body is lower than the top end of the float body of the float bowl, the float body moves downwards to enable the valve rod assembly to open the air inlet channel, and external air enters the internal space to reduce negative pressure in the internal space. Therefore, the utility model discloses negative pressure in the adjustable pipeline is in order to protect the pipeline.
Description
Technical Field
The utility model relates to a liquid conveying pipeline's pressure regulating device.
Background
When a pipeline for conveying liquid in the prior art stops conveying liquid or starts pumping under the condition that the interior of the pipeline is not filled with liquid, negative pressure is easily generated in the pipeline due to flowing inertia of the liquid, height difference of the pipeline and the like. In certain situations, such as when the vertical extension of the pipe is long, when the pump at the bottom of the pipe stops delivering water upwards, the pipe at the top will create a strong negative pressure due to the weight pull of the liquid in the pipe, which may cause the pipe to break, so that the pipe sucks in sewage dirt.
Therefore, the prior art pipeline for transporting liquid needs to be improved.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing disadvantages and shortcomings of the prior art, the present invention provides a negative pressure regulator for pipeline. When producing the negative pressure in the pipeline, the utility model discloses can introduce outside air automatically in order to reduce the inside negative pressure of pipeline, the efficiency of performance protection pipeline.
In order to achieve the above object, the present invention provides a negative pressure regulator for pipeline, comprising:
a body having an inner space formed therein; the body includes:
a connecting seat, which is formed with a body water inlet, a body water outlet and a ventilation opening, wherein the body water inlet, the body water outlet and the ventilation opening are all formed on the outer wall surface of the body and are communicated with the inner space;
the mounting cylinder is detachably connected with the bottom of the connecting seat; the mounting cylinder is a hollow body, and the hollow part of the mounting cylinder forms an inner cylinder area; the inner space is formed by the connecting seat and the cylinder inner area of the mounting cylinder;
after the liquid flows into the inner space from the water inlet of the body, the liquid flows to the area in the cylinder firstly and then flows towards the water outlet of the body;
an inspiration valve, it locates this opening of ventilating of connecting seat, and contains:
a valve body arranged at the ventilation opening and forming an air inlet channel; the air inlet channel is communicated with the inner space and the outer part of the body;
a valve stem assembly selectively closing or opening the intake passage;
a float connected to the valve stem assembly and located in the interior space;
wherein, the float bowl moves up and down along with the liquid level in the inner space to enable the valve rod component to have a closing state or an opening state; the float bowl can move upwards to enable the valve rod assembly to seal the air inlet channel so as to enable the valve rod assembly to be in the closed state; the float bowl can move downwards to enable the valve rod assembly to open the air inlet channel so as to enable the valve rod assembly to be in the open state; in the open state, external air can enter the internal space through the air inlet channel to reduce negative pressure in the internal space.
Further, in the negative pressure regulating device for a pipeline, a float channel extending up and down is formed in the inner space; the ventilation opening is formed at the top end of the float bowl channel, and a channel water inlet and a channel water outlet are respectively formed at the bottom and the side wall of the float bowl channel; the liquid in the cylinder area flows upwards from the channel water inlet to the float bowl channel and then leaves the float bowl channel through the channel water outlet and flows towards the body water outlet; the float bowl is positioned in the float bowl channel, and the height of the bottom of the float bowl corresponds to the height of the channel water outlet, so that the flow of the liquid generates upward thrust on the bottom of the float bowl.
Further, the negative pressure regulating device for a pipe, wherein a cylindrical inner area is formed in the inner space; the liquid flows into the inner space from the water inlet of the body, then flows into the inner area of the cylinder, and then flows towards the water inlet of the channel.
Further, the negative pressure regulator for pipeline, wherein the body has a connecting seat, and the water inlet of the body, the water outlet of the body and the ventilation opening are formed on the connecting seat; the mounting cylinder is a hollow body and is detachably connected with the bottom of the connecting seat; wherein, the inner space is formed by the connecting seat and the hollow part of the mounting cylinder together, and the area in the cylinder is the hollow part of the mounting cylinder.
Further, the pipeline negative pressure adjusting device, wherein: the valve stem assembly has: an opening and closing rod which can be glidingly passed through the air-intake channel; the bottom of the opening and closing rod is positioned in the inner space, and an installation ring groove is formed at the bottom of the opening and closing rod; an O-ring sleeved with the mounting ring groove; the inlet channel is provided with a conical groove towards the opening of the inner space; when the air inlet channel is closed, the buoy enables the outer ring surface of the O-shaped ring to be tightly pressed against the groove wall of the conical groove to seal the air inlet channel.
Further, the pipeline negative pressure adjusting device, wherein the buoy has: one end of the connecting part is connected with the valve rod component; a floating body located at the other end of the connection part; the bottom of the opening and closing rod is provided with a clamping groove; the valve rod assembly is further provided with a connecting rod, one end of the connecting rod is pivoted with the valve body, and the other end of the connecting rod is pivoted with the connecting part of the buoy; the connecting rod is provided with a clamping part which penetrates through the clamping groove for clamping the opening and closing rod.
Further, in the negative pressure regulator of the present invention, the valve rod assembly further has an elastic member, and the elastic member pushes the opening/closing rod upward.
Further, the pipeline negative pressure adjusting device, wherein the outer wall surface of the body is further formed with: the two flanges are combined with a plane; the body water inlet is formed on one of the flange combining planes, and the body water outlet is formed on the other flange combining plane; two first flange fixing structures respectively formed on the two flange combination planes; each first flange fixing structure is provided with two first fixing screw holes which are concavely arranged on the corresponding flange combination plane, wherein the two first fixing screw holes of one first flange fixing structure are respectively positioned at two opposite sides of the water inlet of the body, and the two first fixing screw holes of the other first flange fixing structure are respectively positioned at two opposite sides of the water outlet of the body; two second flange fixing structures respectively formed on the two flange combination planes; each second flange fixing structure is provided with four second fixing screw holes which are concavely arranged on the corresponding flange combination plane; wherein the four second fixing screw holes of one of the second flange fixing structures are arranged around the water inlet of the body at equal angular intervals, and the four second fixing screw holes of the other second flange fixing structure are arranged around the water outlet of the body at equal angular intervals.
Further, in the negative pressure regulator of the pipeline, a distance between the two first fixing screw holes on each flange combining plane is greater than a distance between any two second fixing screw holes on the same flange combining plane.
The utility model discloses when using, with the body concatenate in a pipeline of carrying liquid. When the pipeline normally conveys liquid, the liquid level in the inner space of the body rises to enable the floating barrel to float, so that the valve rod assembly seals the air inlet channel, and the liquid flows towards the water outlet of the body through the water inlet of the body.
The utility model has the advantages of, when making the liquid level decline in the inner space because of stopping carrying various reasons such as liquid in the pipeline, the flotation pontoon moves down along with the liquid level, and then makes valve rod assembly open inlet channel. Therefore, the external air can enter the internal space through the air inlet channel, so that the internal part of the pipeline is prevented from being broken due to strong negative pressure generated by various reasons, and the pipeline protection device has the effect of protecting the pipeline.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a partially exploded perspective view of the present invention.
Fig. 3 is an exploded perspective view of the suction valve of the present invention.
Fig. 4 and 5 are schematic sectional views illustrating the operation of the present invention.
Fig. 6 is a partially enlarged view of fig. 4.
Fig. 7 is a partially enlarged view of fig. 5.
Fig. 8 is a partial side view of the present invention.
Detailed Description
The following description of the preferred embodiments of the present invention will be made in conjunction with the drawings and the accompanying drawings to further illustrate the technical means adopted to achieve the objects of the present invention.
Referring to fig. 1, 2 and 4, the negative pressure regulator of the present invention includes a body 10 and an air suction valve 20.
The body 10 defines an interior space 101, a body inlet 102, a body outlet 103, and a vent opening 104. The body inlet 102, the body outlet 103, and the air vent 104 are formed on the outer wall surface of the body 10 and communicate with the internal space 101. In the present embodiment, the body 10 is a filter for installation in a liquid-conveying pipe a, and has a connecting seat 11 and a hollow installation cylinder 12; the inner space 101 is formed by the connecting base 11 and the hollow of the mounting cylinder 12, and the hollow of the mounting cylinder 12 is defined as an in-cylinder area, which is preferably used for disposing a filter element. The body inlet 102, the body outlet 103 and the ventilation opening 104 are formed in the connecting base 11. The bottom of connecting seat 11 is connected to installation section of thick bamboo 12 detachably, the mountable is not in installation section of thick bamboo 12 the utility model discloses a filter core. In addition, a float channel 111 (shown in fig. 4) extending up and down is formed in the inner space 101, the vent opening 104 is formed at the top end of the float channel 111, and a channel water inlet 112 (shown in fig. 4) and a channel water outlet 113 (shown in fig. 4) are respectively formed at the bottom and the side wall of the float channel 111.
In this embodiment, the outer wall surface of the connecting seat 11 of the body 10 is further formed with a water inlet flange connection plane 114 (as shown in fig. 4) and a water outlet flange connection plane 115, the body water inlet 102 (as shown in fig. 4) is formed on the water inlet flange connection plane 114, and the body water outlet 103 is formed on the water outlet flange connection plane 115.
As shown in fig. 1, fig. 4 and fig. 8, a first flange fixing structure 116 (shown in fig. 1) and a second flange fixing structure 117 (shown in fig. 1) are respectively formed on the water inlet flange combining plane 114 and the water outlet flange combining plane 115. The first flange fixing structure 116 has two first fixing screw holes 1161; the two first fixing screw holes 1161 of the first flange fixing structure 116 located on the water inlet flange combining plane 114 are recessed in the water inlet flange combining plane 114 and located at two opposite sides of the body water inlet 102. The two first fixing screw holes 1161 of the first flange fixing structure 116 located on the outlet flange combining plane 115 are recessed in the outlet flange combining plane 115 and located on two opposite sides of the water outlet 103 of the body.
The second flange fixing structure 117 has four second fixing screw holes 1171; the fourth fixing screw holes 1171 of the second flange fixing structure 117 located at the water inlet flange coupling plane 114 are concavely formed at the water inlet flange coupling plane 114 and are equiangularly spaced around the body inlet 102. The fourth fixing screw holes 1171 of the second flange fixing structure 117 located on the outlet flange combining plane 115 are concavely arranged on the outlet flange combining plane 115 and are arranged around the body water outlet 103 at equal angular intervals. Furthermore, the distance between the two first fixing screw holes 1161 on the water flange combining plane 114 is greater than the distance between any two second fixing screw holes 1171, and the same applies to the fixing screw holes 1161 and 1171 on the water flange combining plane 115.
Referring to fig. 1 and 4, in use, the body 10 is connected in series to a pipe a, and a filter element (not shown) is disposed in the installation tube 12. After flowing into the inner space 101 from the body water inlet 102, the liquid in the pipe a flows into the cylinder inner area of the installation cylinder 12 for filtration, then flows upwards into the float channel 111 from the channel water inlet 112, then leaves the float channel 111 through the channel water outlet 113, and finally leaves the inner space 101 through the body water outlet 103.
Will the utility model discloses when concatenating in pipeline A, often need to connect outside pipeline components through flange B, and common flange has rhombus and two kinds of square specifications on the market. First flange fixed knot constructs 116 makes the utility model discloses an all can install the rhombus flange of practicing of body water inlet 102 and body delivery port 103 department, second flange fixed knot constructs 117 and makes the utility model discloses an all can install the square flange of practicing of body water inlet 102 and body delivery port 103 department. The utility model discloses borrow by all setting up the flange fixed knot of two kinds of differences in body water inlet 102 and body delivery port 103 department and construct (first flange fixed knot constructs 116 and a second flange fixed knot constructs 117 promptly), and make the utility model discloses simultaneously compatible with two kinds of common flange specifications on the market, reduce the trouble of installation prepareeing material, it is more convenient in the use.
Referring to fig. 3 to 7, the inhalation valve 20 is disposed at the ventilation opening 104 of the body 10 and includes a valve body 21, a valve stem assembly 22 and a float 23. The valve body 21 is disposed at the vent opening 104 and forms an air inlet passage 211, and the air inlet passage 211 communicates the inner space 101 of the body 10 with the outside, so that the external air can enter the inner space 101 through the air inlet passage 211 to balance the pressure difference between the inner space 101 and the outside. In the present embodiment, the inlet passage 211 is formed with a tapered groove 212 (shown in fig. 6) toward the opening of the internal space 101.
The valve stem assembly 22 may be controlled by the float 23 to close or open the intake passage 211. Specifically, the stem assembly 22 includes an opening/closing rod 221, an O-ring 222, a connecting rod 223, and an elastic member 224. The opening/closing rod 221 slidably penetrates the intake passage 211, the bottom of the opening/closing rod 221 is located in the inner space 101, and a mounting ring groove 2211 and an engaging groove 2212 are formed in the bottom of the opening/closing rod 221. The O-ring 222 is fitted around the mounting ring slot 2211. The coupling rod 223 is formed with an engaging portion 2231, and the engaging portion 2231 is inserted into an engaging groove 2212 of the opening/closing rod 221. When the link 223 is driven by an external force in the upward or downward direction, the link 223 can drive the opening/closing lever 221 to slide up and down with respect to the intake passage 211 through the engaging portion 2231. The elastic member 224 pushes the opening and closing lever 221 upward.
A float 23 is connected to the valve stem assembly 22 and is located in the interior space 101. The float 23 moves up and down with the liquid level in the internal space 101 to provide the valve stem assembly 22 with a closed state or an open state. The float 23 can move upward to make the valve rod assembly 22 close the air inlet passage 211, so that the valve rod assembly 22 is in the closed state (as shown in fig. 4 and 6); the float 23 is moved downward to open the intake passage 211 of the valve stem assembly 22, so that the valve stem assembly 22 is in the aforementioned open state (see fig. 5 and 7). Specifically, the float 23 is located in the float channel 111, and the height of the bottom of the float 23 corresponds to the height of the channel water outlet 113, so that the flow inertia of the liquid in the float channel 111 generates an upward thrust on the bottom of the float 23; more specifically, the bottom surface of the float 23 is lower than the open upper edge of the passage outlet 113. In the present embodiment, the float 23 has a connecting portion 231 and a floating body 232, and the connecting portion 231 and the floating body 232 are preferably integrally formed. One end of the connecting portion 231 is connected to the connecting rod 223 of the stem assembly 22. The floating body 232 is located at the other end of the connection portion 231, and the floating body 232 is preferably a column shape.
When the pipe a normally conveys liquid, the liquid level in the inner space 101 rises, and the liquid floats up the float 23 to slide the opening/closing rod 221 of the valve rod assembly 22 upward, so that the outer annular surface of the O-ring 222 is pressed against the wall of the tapered groove 212 to close the air inlet passage 211 (as shown in fig. 4 and 6), so that the valve rod assembly 22 is in the aforementioned closed state. When the pipe a is not filled with liquid due to various reasons such as stopping the liquid delivery and the like, and the liquid in the body 10 descends, the weight of the floating body 232 moves the valve stem assembly 22 downwards to open the air inlet passage 211, so that the valve stem assembly 22 is in the aforementioned open state. In the open state, the external air may enter the internal space 101 through the air inlet channel 211 to reduce the negative pressure in the internal space 101 (as shown in fig. 5 and 7), so as to avoid the generation of a strong negative pressure inside the pipeline a due to the inertia of the liquid flowing or the height difference of the pipeline, and to protect the fluid pipeline. In the closed state, the liquid level is preferably above the top surface of float 232; in the open state, the liquid level is preferably below the bottom surface of float 232.
To sum up, the utility model discloses a set up flotation pontoon 23 and can detect whether pipeline A normally carries liquid automatically. When the pipeline A does not normally convey liquid, the float 23 opens the air inlet channel 211 through the valve rod assembly 22, so that external air enters the pipeline A to adjust the negative pressure, and the pipeline A is protected.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make modifications or changes to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.
Claims (7)
1. A negative pressure regulator for pipes, comprising:
a body having an inner space formed therein; the body includes:
a connecting seat, which is formed with a body water inlet, a body water outlet and a ventilation opening, wherein the body water inlet, the body water outlet and the ventilation opening are all formed on the outer wall surface of the body and are communicated with the inner space;
the mounting cylinder is detachably connected with the bottom of the connecting seat; the mounting cylinder is a hollow body, and the hollow part of the mounting cylinder forms an inner cylinder area; the inner space is formed by the connecting seat and the cylinder inner area of the mounting cylinder;
after the liquid flows into the inner space from the water inlet of the body, the liquid flows to the area in the cylinder firstly and then flows towards the water outlet of the body;
an inspiration valve, it locates this opening of ventilating of connecting seat, and contains:
a valve body arranged at the ventilation opening and forming an air inlet channel; the air inlet channel is communicated with the inner space and the outer part of the body;
a valve stem assembly selectively closing or opening the intake passage;
a float connected to the valve stem assembly and located in the interior space;
wherein, the float bowl moves up and down along with the liquid level in the inner space to enable the valve rod component to have a closing state or an opening state; the float bowl can move upwards to enable the valve rod assembly to seal the air inlet channel so as to enable the valve rod assembly to be in the closed state; the float bowl can move downwards to enable the valve rod assembly to open the air inlet channel so as to enable the valve rod assembly to be in the open state; in the open state, external air can enter the internal space through the air inlet channel to reduce negative pressure in the internal space.
2. The negative pressure regulator of claim 1, wherein:
a float bowl channel extending up and down is formed in the inner space; the ventilation opening is formed at the top end of the float bowl channel, and a channel water inlet and a channel water outlet are respectively formed at the bottom and the side wall of the float bowl channel; the liquid in the cylinder area flows upwards from the channel water inlet to the float bowl channel and then leaves the float bowl channel through the channel water outlet and flows towards the body water outlet;
the float bowl is positioned in the float bowl channel, and the height of the bottom of the float bowl corresponds to the height of the channel water outlet, so that the flow of the liquid generates upward thrust on the bottom of the float bowl.
3. The negative pressure regulator of claim 1 or 2, wherein:
the valve stem assembly has:
an opening and closing rod which can be glidingly passed through the air-intake channel; the bottom of the opening and closing rod is positioned in the inner space, and an installation ring groove is formed at the bottom of the opening and closing rod;
an O-ring sleeved with the mounting ring groove;
the inlet channel is provided with a conical groove towards the opening of the inner space;
when the air inlet channel is closed, the buoy enables the outer ring surface of the O-shaped ring to be tightly pressed against the groove wall of the conical groove to seal the air inlet channel.
4. The negative pressure regulator of claim 3, wherein:
the float bowl has:
one end of the connecting part is connected with the valve rod component;
a floating body located at the other end of the connection part;
the bottom of the opening and closing rod is provided with a clamping groove;
the valve rod assembly is further provided with a connecting rod, one end of the connecting rod is pivoted with the valve body, and the other end of the connecting rod is pivoted with the connecting part of the buoy; the connecting rod is provided with a clamping part which penetrates through the clamping groove for clamping the opening and closing rod.
5. The negative pressure regulator as claimed in claim 3, wherein the valve stem assembly further has an elastic member which pushes the opening/closing lever upward.
6. The negative pressure regulator of claim 1 or 2, wherein the outer wall surface of the body is further formed with:
the two flanges are combined with a plane; the body water inlet is formed on one of the flange combining planes, and the body water outlet is formed on the other flange combining plane;
two first flange fixing structures respectively formed on the two flange combination planes; each first flange fixing structure is provided with two first fixing screw holes which are concavely arranged on the corresponding flange combination plane, wherein the two first fixing screw holes of one first flange fixing structure are respectively positioned at two opposite sides of the water inlet of the body, and the two first fixing screw holes of the other first flange fixing structure are respectively positioned at two opposite sides of the water outlet of the body;
two second flange fixing structures respectively formed on the two flange combination planes; each second flange fixing structure is provided with four second fixing screw holes which are concavely arranged on the corresponding flange combination plane; wherein the four second fixing screw holes of one of the second flange fixing structures are arranged around the water inlet of the body at equal angular intervals, and the four second fixing screw holes of the other second flange fixing structure are arranged around the water outlet of the body at equal angular intervals.
7. The negative pressure regulator of claim 6, wherein the distance between the two first fixing screw holes of each flange connection plane is greater than the distance between any two second fixing screw holes of the same flange connection plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022721433.XU CN213982488U (en) | 2020-11-23 | 2020-11-23 | Pipeline negative pressure adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022721433.XU CN213982488U (en) | 2020-11-23 | 2020-11-23 | Pipeline negative pressure adjusting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213982488U true CN213982488U (en) | 2021-08-17 |
Family
ID=77265842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022721433.XU Active CN213982488U (en) | 2020-11-23 | 2020-11-23 | Pipeline negative pressure adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213982488U (en) |
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2020
- 2020-11-23 CN CN202022721433.XU patent/CN213982488U/en active Active
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