CN105864441A - Pressure reduction device - Google Patents
Pressure reduction device Download PDFInfo
- Publication number
- CN105864441A CN105864441A CN201610198339.6A CN201610198339A CN105864441A CN 105864441 A CN105864441 A CN 105864441A CN 201610198339 A CN201610198339 A CN 201610198339A CN 105864441 A CN105864441 A CN 105864441A
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- China
- Prior art keywords
- channel
- blood pressure
- pressure regulating
- feedback channel
- pressure reduction
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- 230000001105 regulatory effect Effects 0.000 claims abstract description 65
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 230000036772 blood pressure Effects 0.000 claims description 66
- 230000006837 decompression Effects 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 24
- 239000003345 natural gas Substances 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 51
- 239000012535 impurity Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K35/00—Means to prevent accidental or unauthorised actuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a pressure reduction device which comprises a valve body. An air inlet channel, an air outlet channel, a drainage hole and a feedback channel are formed in the valve body. A pressure reduction part is arranged between the air inlet channel and the air outlet channel. A pressure regulating part is arranged between the drainage hole and the feedback channel. The valve body is connected with a pressure regulating screw. A pressure regulating seat is arranged in the feedback channel. The pressure reduction part comprises a pressure reduction valve element and a pressure reduction valve seat. The pressure reduction valve seat is of a cylindrical structure, and an external thread is arranged on the outer side of the pressure reduction valve seat. The pressure reduction valve seat is in threaded connection with the interior of the air inlet channel. The pressure reduction valve element is located in the air outlet channel. A membrane is further arranged on the pressure reduction valve element. The air outlet channel is blocked by the side wall of the membrane so that a feedback cavity can be formed in the air outlet channel. The air inlet channel is connected with a leak plugging part. The leak plugging part comprises an air inlet pipe, a baffle and a steel ball. A spherical groove is formed in the baffle. The pressure reduction device is good in controllability of the pressure reduction effect, low in operation and maintenance cost, convenient to eliminate failures, and capable of preventing natural gas overflow in the working process and achieving self-cutting-off when overflow happens.
Description
Technical field
The present invention relates to compressed gas decompressor field, particularly relate to a kind of dropping equipment.
Background technology
Along with natural gas uses more and more extensive, various forms of air relief valve emerge in an endless stream, and optimizing further of natural gas depressurization valve arrangement will be promoted the utilization of natural gas further.As a example by environmental consciousness, natural gas can be greatly reduced Vehicular exhaust pollution for the fuel of vehicle motor, but in order to improve the single aeration stroke of the vehicle with natural gas as fuel, gas cylinder it is provided with for housing natural gas on vehicle, and the gas pressure being finally introducing cylinder is generally several kPas, so, the air relief valve reducing pressure high-pressure natural gas is particularly important, simultaneously in practice, the stability of above air relief valve performance has been reacted on the power of vehicle even in traffic safety the most intuitively.
Gas combustion automobile is in the process of moving, in its gas cylinder, gas pressure can be gradually lowered, so, for obtaining stable low pressure natural gas output or different engine power output, between blood pressure lowering spool and the valve seat of air relief valve will necessarily frequently relative motion with adjust output gas pressure, and gas passage air-flow between above blood pressure lowering spool and valve seat is very fast, either the washing away or friction between blood pressure lowering spool and valve seat of impurity in gas circuit, all can cause air relief valve degradation, even impurity effect blood pressure lowering spool and valve seat Guan Bi, so, gas pressure in the state lower cylinder that vehicle disables for a long time will slowly raise, cause igniting or other engine failure, optimizing further of gas pressure reducer valve core structure is particularly important.
Summary of the invention
Existing gas pressure reducer valve core structure optimized the problem being particularly important further for above-mentioned, the invention provides a kind of dropping equipment.
nullFor solving the problems referred to above，A kind of dropping equipment that the present invention provides solves problem by techniques below main points: a kind of dropping equipment，Including valve body，It is provided with inlet channel on described valve body、Outlet passageway、Escape orifice and feedback channel，It is provided with decompression portion between described inlet channel and outlet passageway，Pressure-regulating portion it is provided with between escape orifice and feedback channel，The arrival end of feedback channel and the port of export communicate with inlet channel and outlet passageway respectively，The most threaded on described valve body have pressure regulating screw，One end of described pressure regulating screw is stretched in feedback channel，And the end of pressure regulating screw one end of stretching into feedback channel is taper，Feedback channel is additionally provided with and the pressure regulating seat of feedback channel matched in clearance，Described pressure regulating seat is hollow、End is provided with the adjusting pressuring valve core of taper、Sidewall is provided with the column structure of air inlet and gas outlet，Pressure regulating screw stretch into feedback channel one rectify exchange pressure valve core，The port of export of described escape orifice communicates with outlet passageway，The arrival end of escape orifice is communicated with feedback channel by the gap between the tapered end of pressure regulating screw with pressure regulating seat spool；
Described decompression portion includes blood pressure lowering spool and blood pressure lowering valve seat, described blood pressure lowering valve seat is that outside is provided with externally threaded cylindrical-shaped structure, and blood pressure lowering valve seat is threaded in inlet channel, blood pressure lowering spool is positioned at outlet passageway, and it is respectively arranged with the tapered groove in cross section and projection on blood pressure lowering valve seat and blood pressure lowering spool, described projection is just to described groove, blood pressure lowering spool is additionally provided with diaphragm away from one end of blood pressure lowering valve seat, the sidewall of diaphragm blocks outlet passageway, diaphragm makes to be formed feedback cavity on outlet passageway, and the port of export of described feedback channel communicates with feedback cavity；
Connect on described inlet channel and have leak stopping portion, described leak stopping portion includes the air inlet pipe being connected on valve body and communicating with inlet channel, the baffle plate being arranged on air inlet pipe inwall, is positioned at the steel ball of air inlet pipe, and described baffle plate is provided with the ball recess that diameter is equal with steel ball size.
Concrete, the pressure regulating screw of setting, pressure regulating seat are pressure-regulating portion, and source of the gas is introduced by inlet channel, and the gap between the groove and the projection that are respectively provided with on blood pressure lowering spool and blood pressure lowering valve seat enters into and completes blood pressure lowering in outlet passageway；nullIn the feedback channel arranged，The entrance of feedback channel communicates with inlet channel，Gases at high pressure are just introduced in pressure regulating seat，In the port of export of feedback channel and escape orifice，Preferably the port of export of feedback channel is arranged on the front end of gas channel between pressure regulating seat and pressure regulating screw，The i.e. arrival end of feedback channel is connected with gas outlet by the air inlet on pressure regulating seat respectively with the port of export，Escape orifice is arranged on the rear end of described gas channel，I.e. after adjusting pressuring valve core，Sheathed O between the air inlet and gas outlet of pressure regulating seat，Escape orifice is arranged on the rear end of described gas channel，So，Gap between pressure regulating seat and pressure regulating screw adjusts and is passed into the size of air-flow in escape orifice，So，The pressure of feedback channel rear end force blood pressure lowering spool away from or towards blood pressure lowering valve seat move，I.e. diaphragm compression chord is deformed or/and slide along outlet passageway，Reach to adjust the purpose of air-flow size between blood pressure lowering spool and blood pressure lowering valve seat，So，It is easy to obtain gas pressure size after different decompressions；Inlet channel is cut off when flow is bigger by the ball recess on the steel ball arranged and baffle plate for the present invention: in concrete utilization, the valve rear end of air relief valve is generally gas equipment, the operating mode of gas equipment relatively air relief valve front end pipeline operating mode is complicated, vibrations such as himself, the pressure of rear end pipeline frequent fluctuation, gas equipment fault etc. is all likely to result in rear end pipeline or gas equipment fault, the front end of the ball recess that the steel ball arranged is positioned on baffle plate, lost efficacy at air relief valve back-end sealing, when decompression portion or equipment fault produce, if the flow of inlet channel increases suddenly, steel ball under the washing away of air-flow towards baffle plate lateral movement, last steel ball falls into blocking-up air inlet pipe in ball recess, realize fault from stopping function.
In this programme, owing to using the version that pressure regulating seat and feedback channel matched in clearance, blood pressure lowering valve seat be threaded with inlet channel, pressure regulating screw is connected with valve body screw thread, make the present invention can separate with valve body with the spool of decompression easily for pressure regulation, being easy to the examination and maintenance of two above spool, the effect of easing stress that can make the present invention is controlled, operation expense is low, failture evacuation is convenient；Meanwhile, be connected with outlet passageway for adjusting the escape orifice port of export of feedback cavity pressure size, it is to avoid present invention natural gas in course of normal operation overflows from air relief valve, beneficially uses gas safety.
Preferred version as the present invention, inlet channel arranges drainage screen, and described drainage screen is positioned at the front end of feedback channel arrival end, with the impurity in isolation gases at high pressure, reduce impurity to the impact of both the above spool and the quality of follow-up low pressure gas, outlet passageway arranges gs-oil separator, with the water separated out after removing decompression or oil.
Further technical scheme is:
For ease of reducing the volume of the present invention, the beneficially processing of the present invention, reduce the quantity of sealing surface on valve body, described outlet passageway, inlet channel, feedback channel and escape orifice are formed by least one section of straight hole section.Above structure is easy to valve body is set to an entirety, processing inlet channel, outlet passageway, feedback channel and escape orifice by the form of boring, the opening of above inlet channel, outlet passageway, feedback channel and escape orifice can be sealed by the version of pipe threaded screw fitted seal pad.
For promoting the feedback response speed of described blood pressure lowering spool, buffering blood pressure lowering spool and the collision of blood pressure lowering valve seat, being additionally provided with two ends in described outlet passageway and be respectively acting on the spring of feedback cavity wall and diaphragm, described spring, blood pressure lowering spool and blood pressure lowering valve seat are respectively positioned in same straight hole section.Arrangement above is easy to improve blood pressure lowering spool by the precision of feedback channel gas pressure, the installation being easy to blood pressure lowering spool and spring and replacing.
For preventing the non-artificial rotation of described pressure regulating screw, affect the outlet pressure of the present invention, described pressure regulating screw is additionally provided with two ends and is respectively acting on the elastic component of pressure regulating screw and valve body.
Owing to spring can deform in the larger context compared to other elastic components, for making pressure regulating screw elastic component during pressure regulation the most all have active force to pressure regulating screw, described elastic component is compression spring.
For promoting steel ball to the sensitivity of air-flow change perception in air inlet pipe, the whole air-flows i.e. making air inlet pipe all can wash away to steel ball in flow process, it is additionally provided with deflector on the inwall of described air inlet pipe, described deflector, steel ball and baffle plate are positioned at same section straight length, and steel ball is between deflector and baffle plate.
The method have the advantages that
1, present configuration is simple, owing to using the version that pressure regulating seat and feedback channel matched in clearance, blood pressure lowering valve seat be threaded with inlet channel, pressure regulating screw is connected with valve body screw thread, make the present invention can separate with valve body with the spool of decompression easily for pressure regulation, being easy to the examination and maintenance of two above spool, the effect of easing stress controllability that can make the present invention is good, operation expense is low, failture evacuation is convenient.
2, be connected with outlet passageway for adjusting the escape orifice port of export of feedback cavity pressure size, it is to avoid present invention natural gas in course of normal operation overflows from air relief valve, beneficially uses gas safety.
3, inlet channel is cut off when flow is bigger by the ball recess on the steel ball arranged and baffle plate for the present invention: in concrete utilization, the valve rear end of air relief valve is generally gas equipment, the operating mode of gas equipment relatively air relief valve front end pipeline operating mode is complicated, vibrations such as himself, the pressure of rear end pipeline frequent fluctuation, gas equipment fault etc. is all likely to result in rear end pipeline or gas equipment fault, the front end of the ball recess that the steel ball arranged is positioned on baffle plate, lost efficacy at air relief valve back-end sealing, when decompression portion or equipment fault produce, if the flow of inlet channel increases suddenly, steel ball under the washing away of air-flow towards baffle plate lateral movement, last steel ball falls into blocking-up air inlet pipe in ball recess, realize the present invention and also there is fault from stopping function.
Accompanying drawing explanation
Fig. 1 is the structural representation of one specific embodiment of a kind of dropping equipment of the present invention.
Figure acceptance of the bid note is respectively as follows: 1, escape orifice, and 2, adjusting pressuring valve core, 3, sealing gasket, 4, pressure regulating seat, 5, feedback channel, 6, valve body, 7, blood pressure lowering spool, 71, diaphragm, 72, spring, 73, feedback cavity, 8, blood pressure lowering valve seat, 9, inlet channel, 10, outlet passageway, 11, pressure regulating screw, 12, elastic component, 13, air inlet pipe, 14, baffle plate, 15, steel ball, 16, deflector.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but the structure of the present invention is not limited only to following example:
Embodiment 1:
nullAs shown in Figure 1，A kind of dropping equipment，Including valve body 6，It is provided with inlet channel 9 on described valve body 6、Outlet passageway 10、Escape orifice 1 and feedback channel 5，It is provided with decompression portion between described inlet channel 9 and outlet passageway 10，It is provided with pressure-regulating portion between escape orifice 1 and feedback channel 5，The arrival end of feedback channel 5 and the port of export communicate with inlet channel 9 and outlet passageway 10 respectively，The most threaded on described valve body 6 have pressure regulating screw 11，One end of described pressure regulating screw 11 is stretched in feedback channel 5，And the end of pressure regulating screw 11 one end of stretching into feedback channel 5 is taper，Feedback channel 5 is additionally provided with and the pressure regulating seat 4 of feedback channel 5 matched in clearance，Described pressure regulating seat 4 is hollow、End is provided with the adjusting pressuring valve core 2 of taper、Sidewall is provided with the column structure of air inlet and gas outlet，Pressure regulating screw 11 stretch into feedback channel 5 one rectify exchange pressure valve core 2，The port of export of described escape orifice 1 communicates with outlet passageway 10，The arrival end of escape orifice 1 is communicated with feedback channel 5 by the gap between tapered end and pressure regulating seat 4 spool of pressure regulating screw 11；
Described decompression portion includes blood pressure lowering spool 7 and blood pressure lowering valve seat 8, described blood pressure lowering valve seat 8 is provided with externally threaded cylindrical-shaped structure for outside, and blood pressure lowering valve seat 8 is threaded in inlet channel 9, blood pressure lowering spool 7 is positioned at outlet passageway 10, and it is respectively arranged with the tapered groove in cross section and projection on blood pressure lowering valve seat 8 and blood pressure lowering spool 7, described projection is just to described groove, blood pressure lowering spool 7 is additionally provided with diaphragm 71 away from one end of blood pressure lowering valve seat 8, the sidewall of diaphragm 71 blocks outlet passageway 10, diaphragm 71 makes to be formed feedback cavity 73 on outlet passageway 10, the port of export of described feedback channel 5 communicates with feedback cavity 73；
Connect on described inlet channel 9 and have leak stopping portion, described leak stopping portion includes the air inlet pipe 13 being connected on valve body 6 and communicating with inlet channel 9, the baffle plate 14 being arranged on air inlet pipe 13 inwall, is positioned at the steel ball 15 of air inlet pipe 13, and described baffle plate 14 is provided with the ball recess of diameter and steel ball 15 equal diameters.
Concrete, the pressure regulating screw 11 of setting, pressure regulating seat 4 are pressure-regulating portion, and source of the gas is introduced by inlet channel 9, and the gap between the groove and the projection that are respectively provided with on blood pressure lowering spool 7 and blood pressure lowering valve seat 8 enters in outlet passageway 10 and completes blood pressure lowering；nullIn the feedback channel 5 arranged，The entrance of feedback channel 5 communicates with inlet channel 9，Gases at high pressure are just introduced in pressure regulating seat 4，In the port of export of feedback channel 5 and escape orifice 1，Preferably the port of export of feedback channel 5 is arranged on the front end of gas channel between pressure regulating seat 4 and pressure regulating screw 11，The i.e. arrival end of feedback channel 5 is connected with gas outlet by the air inlet on pressure regulating seat 4 respectively with the port of export，Escape orifice 1 is arranged on the rear end of described gas channel，I.e. after adjusting pressuring valve core 2，Sheathed O between the air inlet and gas outlet of pressure regulating seat 4，Escape orifice 1 is arranged on the rear end of described gas channel，So，Gap between pressure regulating seat 4 and pressure regulating screw 11 adjusts and is passed into the size of air-flow in escape orifice 1，So，The pressure of feedback channel 5 rear end force blood pressure lowering spool 7 away from or move towards blood pressure lowering valve seat 8，I.e. diaphragm 71 compression chord is deformed or/and slide along outlet passageway 10，Reach to adjust the purpose of air-flow size between blood pressure lowering spool 7 and blood pressure lowering valve seat 8，So，It is easy to obtain gas pressure size after different decompressions；Inlet channel 9 is cut off when flow is bigger by the ball recess on the steel ball 15 arranged and baffle plate 14 for the present invention: in concrete utilization, the valve rear end of air relief valve is generally gas equipment, the operating mode of gas equipment relatively air relief valve front end pipeline operating mode is complicated, vibrations such as himself, the pressure of rear end pipeline frequent fluctuation, gas equipment fault etc. is all likely to result in rear end pipeline or gas equipment fault, the steel ball 15 arranged is positioned at the front end of the ball recess on baffle plate 14, lost efficacy at air relief valve back-end sealing, when decompression portion or equipment fault produce, if the flow of inlet channel 9 increases suddenly, steel ball under the washing away of air-flow towards baffle plate lateral movement, last steel ball 15 falls into blocking-up air inlet pipe 13 in ball recess, realize fault from stopping function.
In this programme, due to the version using pressure regulating seat 4 and feedback channel 5 matched in clearance, blood pressure lowering valve seat 8 is threadeded with inlet channel 9, pressure regulating screw 11 is threadeded with valve body 6, the spool for pressure regulation and decompression is made in the present invention to separate with valve body 6 easily, being easy to the examination and maintenance of two above spool, the effect of easing stress that can make the present invention is controlled, operation expense is low, failture evacuation is convenient；Meanwhile, be connected with outlet passageway 10 for adjusting escape orifice 1 port of export of pressure size in feedback cavity 73, it is to avoid present invention natural gas in course of normal operation overflows from air relief valve, beneficially uses gas safety.
Preferred version as the present invention, inlet channel 9 arranges drainage screen, and described drainage screen is positioned at the front end of feedback channel 5 arrival end, with the impurity in isolation gases at high pressure, reduce impurity to the impact of both the above spool and the quality of follow-up low pressure gas, outlet passageway 10 arranges gs-oil separator, with the water separated out after removing decompression or oil.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1, as it is shown in figure 1, for ease of the volume reducing the present invention, the beneficially processing of the present invention, reducing the quantity of sealing surface on valve body 6, described outlet passageway 10, inlet channel 9, feedback channel 5 and escape orifice 1 are formed by least one section of straight hole section.Above structure is easy to be set to valve body 6 entirety, processing inlet channel 9, outlet passageway 10, feedback channel 5 and escape orifice 1 by the form of boring, the opening of above inlet channel 9, outlet passageway 10, feedback channel 5 and escape orifice 1 can be sealed by the version of pipe threaded screw fitted seal pad 3.
For promoting the feedback response speed of described blood pressure lowering spool 7, buffering blood pressure lowering spool 7 and the collision of blood pressure lowering valve seat 8, being additionally provided with two ends in described outlet passageway 10 and be respectively acting on the spring 72 of feedback cavity 73 wall and diaphragm 71, described spring 72, blood pressure lowering spool 7 and blood pressure lowering valve seat 8 are respectively positioned in same straight hole section.Arrangement above is easy to improve blood pressure lowering spool 7 by the precision of feedback channel 5 gas pressure, the installation being easy to blood pressure lowering spool 7 and spring 72 and replacing.
Embodiment 3:
The present embodiment is further qualified on the basis of embodiment 1, as shown in Figure 1, for preventing the described non-artificial rotation of pressure regulating screw 11, affect the outlet pressure of the present invention, described pressure regulating screw 11 is additionally provided with two ends and is respectively acting on the elastic component 12 of pressure regulating screw 11 and valve body 6.
Owing to spring can deform in the larger context compared to other elastic components 12, for making pressure regulating screw 11 elastic component 12 during pressure regulation the most all have active force to pressure regulating screw 11, described elastic component 12 is compression spring.
Embodiment 4:
The present embodiment is further qualified on the basis of above example, as shown in Figure 1, for promoting steel ball 15 to the sensitivity of air-flow change perception in air inlet pipe 13, the whole air-flows i.e. making air inlet pipe 13 all can wash away to steel ball 15 in flow process, it is additionally provided with deflector 16 on the inwall of described air inlet pipe 13, described deflector 16, steel ball 15 and baffle plate 14 are positioned at same section straight length, and steel ball 15 is between deflector 16 and baffle plate 14.
Above content is to combine the further description that the present invention is made by concrete preferred implementation, it is impossible to assert that the detailed description of the invention of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, other embodiments drawn under without departing from technical scheme, should be included in protection scope of the present invention.
Claims (6)
- null1. a dropping equipment，Including valve body (6)，Inlet channel (9) it is provided with on described valve body (6)、Outlet passageway (10)、Escape orifice (1) and feedback channel (5)，It is provided with decompression portion between described inlet channel (9) and outlet passageway (10)，It is provided with pressure-regulating portion between escape orifice (1) and feedback channel (5)，The arrival end of feedback channel (5) and the port of export communicate with inlet channel (9) and outlet passageway (10) respectively，It is characterized in that，Described valve body (6) is the most threaded pressure regulating screw (11)，One end of described pressure regulating screw (11) is stretched in feedback channel (5)，And the end of pressure regulating screw (11) one end of stretching into feedback channel (5) is taper，Feedback channel (11) is additionally provided with the pressure regulating seat (4) with feedback channel (11) matched in clearance，Described pressure regulating seat (4) is hollow、End is provided with the adjusting pressuring valve core (2) of taper、Sidewall is provided with the column structure of air inlet and gas outlet，Pressure regulating screw (11) stretch into feedback channel (5) one rectify exchange pressure valve core (2)，The port of export of described escape orifice (1) communicates with outlet passageway (10)，The arrival end of escape orifice (1) is communicated with feedback channel (5) by the gap between tapered end and the pressure regulating seat spool (2) of pressure regulating screw (11)；Described decompression portion includes blood pressure lowering spool (7) and blood pressure lowering valve seat (8), described blood pressure lowering valve seat (8) is that outside is provided with externally threaded cylindrical-shaped structure, and blood pressure lowering valve seat (8) is threaded in inlet channel (9), blood pressure lowering spool (7) is positioned at outlet passageway (10), and it is respectively arranged with the tapered groove in cross section and projection on blood pressure lowering valve seat (8) and blood pressure lowering spool (7), described projection is just to described groove, blood pressure lowering spool (7) is additionally provided with diaphragm (71) away from one end of blood pressure lowering valve seat (8), the sidewall of diaphragm (71) blocks outlet passageway (10), diaphragm (71) makes to be formed feedback cavity (73) on outlet passageway (10), the port of export of described feedback channel (5) communicates with feedback cavity (73)；The upper connection of described inlet channel (9) has leak stopping portion, described leak stopping portion include being connected to valve body (6) upper and communicate with inlet channel (9) air inlet pipe (13), the baffle plate (14) being arranged on air inlet pipe (13) inwall, the steel ball (15) that is positioned at air inlet pipe (13), described baffle plate (14) is provided with the ball recess of diameter and steel ball (15) equal diameters.
- A kind of dropping equipment the most according to claim 1, it is characterised in that described outlet passageway (10), inlet channel (9), feedback channel (5) and escape orifice (1) are formed by least one section of straight hole section.
- A kind of dropping equipment the most according to claim 2, it is characterized in that, being additionally provided with two ends in described outlet passageway (10) and be respectively acting on the spring (72) of feedback cavity (73) wall and diaphragm (71), described spring (72), blood pressure lowering spool (7) and blood pressure lowering valve seat (8) are respectively positioned in same straight hole section.
- A kind of dropping equipment the most according to claim 1, it is characterised in that be additionally provided with two ends on described pressure regulating screw (11) and be respectively acting on the elastic component (12) of pressure regulating screw (11) and valve body (6).
- A kind of dropping equipment the most according to claim 4, it is characterised in that described elastic component (12) is compression spring.
- 6. according to a kind of dropping equipment any one of in claim 1 to 5, it is characterized in that, deflector (16) it is additionally provided with on the inwall of described air inlet pipe (13), described deflector (16), steel ball (15) and baffle plate (14) are positioned at same section straight length, and steel ball (15) is positioned between deflector (16) and baffle plate (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610198339.6A CN105864441B (en) | 2016-04-01 | 2016-04-01 | A kind of dropping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610198339.6A CN105864441B (en) | 2016-04-01 | 2016-04-01 | A kind of dropping equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105864441A true CN105864441A (en) | 2016-08-17 |
| CN105864441B CN105864441B (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610198339.6A Expired - Fee Related CN105864441B (en) | 2016-04-01 | 2016-04-01 | A kind of dropping equipment |
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| CN (1) | CN105864441B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377297A (en) * | 2020-11-16 | 2021-02-19 | 四川莱克斯流体控制设备有限公司 | Multifunctional universal adjustable exhaust valve |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5162486B2 (en) * | 2009-02-02 | 2013-03-13 | 株式会社ケーヒン | Pressure reducing valve |
| CN101761682B (en) * | 2010-02-09 | 2011-11-30 | 费斯托(中国)有限公司 | soft starting valve |
| CN201715057U (en) * | 2010-06-18 | 2011-01-19 | 同济大学 | Balance piston induction type pneumatic pressure relief valve |
| CN205534292U (en) * | 2016-04-01 | 2016-08-31 | 成都科盛石油科技有限公司 | Step -down mechanism |
-
2016
- 2016-04-01 CN CN201610198339.6A patent/CN105864441B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377297A (en) * | 2020-11-16 | 2021-02-19 | 四川莱克斯流体控制设备有限公司 | Multifunctional universal adjustable exhaust valve |
| CN112377297B (en) * | 2020-11-16 | 2022-05-27 | 四川莱克斯流体控制设备有限公司 | Multifunctional universal adjustable exhaust valve |
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|---|---|
| CN105864441B (en) | 2018-12-04 |
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