CN117267089A - Suction starting valve and vacuumizing system - Google Patents
Suction starting valve and vacuumizing system Download PDFInfo
- Publication number
- CN117267089A CN117267089A CN202311178345.1A CN202311178345A CN117267089A CN 117267089 A CN117267089 A CN 117267089A CN 202311178345 A CN202311178345 A CN 202311178345A CN 117267089 A CN117267089 A CN 117267089A
- Authority
- CN
- China
- Prior art keywords
- valve
- piston
- channel
- diaphragm
- air flow
- 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.)
- Pending
Links
- 239000007858 starting material Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 20
- 238000005086 pumping Methods 0.000 claims description 15
- 230000007423 decrease Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/1013—Adaptations or arrangements of distribution members the members being of the poppet valve type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/08—Actuation of distribution members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/06—Combinations of two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/004—Priming of not self-priming pumps
- F04D9/006—Priming of not self-priming pumps by venting gas or using gas valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/04—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock
- F04D9/041—Priming; Preventing vapour lock using priming pumps; using booster pumps to prevent vapour-lock the priming pump having evacuating action
-
- 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
- F16K51/00—Other details not peculiar to particular types of valves or cut-off apparatus
- F16K51/02—Other details not peculiar to particular types of valves or cut-off apparatus specially adapted for high-vacuum installations
-
- 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
- F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
- F16K7/12—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm
- F16K7/14—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat
- F16K7/17—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being actuated by fluid pressure
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention provides an air suction starting valve and a vacuumizing system, wherein the air suction starting valve comprises a valve and a starter; one end of the valve is provided with a diaphragm, the diaphragm is connected with a valve core, the valve core can open or close an air inlet of the valve under the deformation of the diaphragm, and one side of the diaphragm is provided with a control port; an air flow channel is formed in the starter, one end of the air flow channel is communicated with the atmosphere, the other end of the air flow channel is communicated with a valve cavity of the valve, and one side of the air flow channel is communicated with the control port; the piston is arranged in the airflow channel in a sliding manner and is provided with a first position and a second position; when the piston is in the first position, the air flow channel is communicated with the atmosphere and the control port respectively, and the air flow channel is sealed with the valve cavity; when the piston is in the second position, the air flow channel is respectively communicated with the valve cavity and the control port, and the air flow channel is sealed from the atmosphere. The zero pressure difference on two sides of the diaphragm is normally achieved, the valve is closed to avoid opening, the diaphragm is protected, and the service life of the valve is prolonged.
Description
Technical Field
The invention relates to the field of fire-fighting equipment, in particular to an air suction starting valve and a vacuum pumping system.
Background
When the pump flow required by the fire truck water pump is large, two vacuum pumps are required to jointly act to meet the requirement of pumping water in a large quantity;
when the vacuum pumps are started, the starting valve of each vacuum pump is opened under the action of atmospheric pressure, so that the aim of matching with vacuumizing is fulfilled;
when only one vacuum pump is required to work, the control port of the starting valve equipped with the other vacuum pump is still communicated with the atmosphere, so that when one vacuum pump works, the other starting valve is also opened, and even if the other vacuum pump does not vacuumize, the other starting valve is frequently opened, so that the service life is influenced.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the air suction starting valve and the vacuumizing system, wherein the valve is additionally provided with the starter which can independently control the valve state, the valve is normally opened during vacuumizing operation, and both sides of the diaphragm are kept in a vacuum state when not vacuumizing, so that the valve is protected. The technical scheme adopted by the invention is as follows:
the application first proposes an inhalation starting valve comprising
The valve comprises a valve body, wherein one end of the valve body is provided with a diaphragm, the diaphragm is connected with a valve core, the valve core can open or close an air inlet of the valve under the deformation of the diaphragm, and one side of the diaphragm on the valve body is provided with a control port; and
an actuator, wherein an air flow channel is formed in the actuator, one end of the air flow channel is communicated with the atmosphere, the other end of the air flow channel is communicated with the valve cavity of the valve, and one side of the air flow channel is communicated with the control port;
wherein a piston is slidably disposed within the airflow passage, the piston having a first position and a second position;
when the piston is in the first position, the air flow channel is communicated with the atmosphere and the control port respectively, the air flow channel is sealed with the valve cavity, and the diaphragm is deformed;
when the piston is in the second position, the air flow channel is respectively communicated with the valve cavity and the control port, the air flow channel is sealed from the atmosphere, and the diaphragm recovers deformation.
Further, one end of the air flow channel is provided with a piston driving piece, and the output end of the piston driving piece is connected with the piston;
when the output end of the piston driving piece extends out, the piston slides to a first position;
when the output end of the piston driver is contracted, the piston slides to a second position.
Further, a first spring is arranged in the airflow channel;
when the piston moves to a first position, the elastic force of the first spring is increased;
the spring force of the first spring decreases as the piston moves toward the second position.
Further, the airflow channel comprises a first channel, a second channel, a third channel and a fourth channel which are sequentially connected;
one end of the first channel extends to the side surface of the starter and is communicated with the valve cavity of the valve;
the connecting part of the other end of the first channel and the second channel forms a first step, the first spring is arranged in the second channel, one end of the first spring is propped against the first step, and the other end of the first spring is propped against the piston;
a third step is formed at the joint of the other end of the third channel and the fourth channel, one side of the third channel is communicated with the control port, and the piston is arranged in the third channel in a sliding manner;
the piston driving piece is connected to the fourth channel, and one end of the piston driving piece abuts against the third step;
the fourth channel is a threaded hole, one end of the piston driving piece is provided with external threads, the piston driving piece is connected with the threaded hole in a threaded mode, and the atmosphere can enter the third channel through the threaded hole.
Further, a second step is formed at the joint of the other end of the second channel and the third channel;
the piston is provided with a first sealing ring and a second sealing ring;
when the piston is in a first position, the second sealing ring is in contact with the first step;
when the piston is in the second position, the first sealing ring is in contact with the end face of the piston driving member.
Further, the output end of the piston driving piece is provided with an armature, the armature is provided with a baffle plate, the piston is provided with a blind hole for accommodating the armature, and when the output end of the piston driving piece extends out, the baffle plate abuts against the end face of the piston.
Further, the valve further comprises a valve plate, a diaphragm gasket, a second spring and an adjusting spring support;
the valve plate is positioned on the side surface of the valve and fixes the edge of the diaphragm;
the diaphragm gasket is positioned between the diaphragm and the second spring;
the spring support is arranged inside the valve, the valve core penetrates through the spring support, the second spring is sleeved on the valve core, and two ends of the second spring are respectively abutted to the diaphragm gasket and the spring support.
Further, a valve seat is arranged at the air inlet of the valve, and the valve core is in contact with the valve seat when the air inlet is closed.
Secondly, the application also provides a vacuum pumping system which is used for pumping water of a water pump in a fire engine and comprises an air suction starting valve and a vacuum pump, wherein the air outlet of the water pump is connected with at least two vacuum pumping systems through pipelines respectively;
in any vacuumizing system, the exhaust port of the water pump is connected with the air inlet of the valve through a pipeline, and the exhaust port of the valve is connected with the air inlet of the vacuum pump through a pipeline.
Further, the vacuum pump and the starter are respectively connected to the switch.
The invention has the advantages that:
combining the valve and the starter into a new starting valve, forming pressure difference at two sides of the diaphragm when vacuumizing, opening the valve to vacuumize, and normally, closing the valve to avoid opening, protecting the diaphragm and prolonging the service life of the valve;
when two starting valves and two vacuum pumps are matched to one water pump for use, the two starting valves are respectively positioned at two sides of the fire engine, can be opened at any side and do not interfere with each other when pumping water, and do not need to rotate around the fire engine, so that the time is saved.
Drawings
Fig. 1 is a schematic view of the structure of the piston in the suction activated valve of the present invention in a first position.
Fig. 2 is a schematic view of the structure of the piston in the suction activated valve of the present invention in the second position.
Fig. 3 is a schematic view of the structure of the casing of the starter of the present invention.
Fig. 4 is a schematic structural diagram of the vacuum pumping system of the present invention.
In the figure: 1-valve, 10-diaphragm, 11-valve core, 12-valve plate, 13-diaphragm gasket, 14-second spring, 15-spring support, 16-valve seat, 2-actuator, 2.1-first channel, 2.2-first step, 2.3-second channel, 2.4-second step, 2.5-third channel, 2.6-third step, 2.7-fourth channel, 20-piston, 20 a-first seal ring, 20 b-second seal ring, 21-piston driver, 21 a-armature, 21 b-baffle, 22-first spring, 3-water pump, 4-vacuum pump, 5-switch.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-3, the present application first provides an inhalation starting valve, comprising a valve 1 and an actuator 2;
one end of the valve 1 is provided with a diaphragm 10, the diaphragm 10 is connected with a valve core 11, the valve core 11 can open or close an air inlet of the valve 1 under the deformation of the diaphragm 10, and a control port is arranged on the valve 1 and at one side of the diaphragm 10;
an air flow channel is formed in the starter 2, one end of the air flow channel is communicated with the atmosphere, the other end of the air flow channel is communicated with a valve cavity of the valve 1, and one side of the air flow channel is communicated with a control port;
wherein, a piston 20 is arranged in the air flow channel in a sliding way, and the piston 20 has a first position and a second position;
when the piston 20 is in the first position, the air flow channel is communicated with the atmosphere and the control port respectively, the air flow channel is sealed between the air flow channel and the valve cavity, and the diaphragm 10 is deformed;
when the piston 20 is in the second position, the air flow passage is communicated with the valve cavity and the control port respectively, the air flow passage is closed off from the atmosphere, and the diaphragm 10 is restored to deformation.
In fig. 1, the air inlet of the valve 1 is arranged on the lower side of the valve 1, the control port of the valve 1 is arranged on the upper side of the valve 1, and the air outlet of the valve 1 is arranged on the left side of the valve 1; the diaphragm 10 is arranged at the top of the valve 1 and separates a control port from a valve cavity of the valve 1; when vacuumizing, air flow is required to enter the valve cavity from the air inlet and is discharged from the air outlet, so that a control port on the upper side of the diaphragm 10 is required to be communicated with the atmosphere, deformation of the diaphragm 10 is realized under the action of pressure difference on the upper side and the lower side of the diaphragm 10, and the valve core 10 descends to open the air inlet of the valve 1; when the vacuum is not pumped, the control port on the upper side of the diaphragm 10 is required to be closed, the pressure difference exists between the upper side and the lower side of the diaphragm 10, the diaphragm 10 recovers deformation, and the valve core 10 upwards closes the air inlet of the valve 1.
Specifically, when the suction starting valve is started and vacuuming operation is required, the piston 20 moves leftwards in the air flow channel to a first position, the right end of the air flow channel is communicated with the control port of the valve 1, the air enters the control port, and meanwhile, the piston 20 blocks the control port, the air flow channel and the valve cavity of the valve 1, so that negative pressure is formed from the exhaust port of the valve 1 to the valve cavity during vacuuming operation, the valve core 11 is driven to move downwards to open the air inlet under the action of pressure difference between the upper side and the lower side of the diaphragm 10, and vacuuming operation is completed;
when the suction starting valve is closed and vacuum operation is not needed (namely under normal state), the piston 20 moves rightward to the second position in the air flow channel, the right end of the air flow channel is blocked from the control port of the valve 1, the air cannot enter the control port, meanwhile, the piston 20 conducts the control port, the air flow channel and the valve cavity of the valve 1, the pressure in the upper side and the lower side of the diaphragm 10 is equal to the pressure in the valve cavity, the upper pressure difference and the lower pressure difference of the diaphragm 10 are realized, the diaphragm 10 is deformed in a recovery mode, and the valve core 11 moves upward to close the air inlet.
By adding the starter 2 on the valve 1, the valve 1 is not affected by external pressure fluctuation when vacuum pumping is not needed, the condition that the valve is accidentally opened is avoided, and the operation safety and the valve service life are improved.
As an embodiment of the present application, the diaphragm 10 is arranged coaxially with the valve core 11, and the valve core 11 is fixedly connected with the diaphragm 10 by a screw.
In fig. 1-2, in order to realize automatic movement of the piston 20 without manual operation, one end of the air flow channel is provided with a piston driving member 21, and an output end of the piston driving member 21 is connected with the piston 20;
when the output end of the piston driver 21 is extended, the piston 20 slides to a first position;
when the output end of the piston driver 21 is contracted, the piston 20 slides to the second position.
Specifically, the piston driver 21 is electrically connected to the control system; when the vacuumizing operation is needed, the piston driving piece 21 is electrified, the output end of the piston driving piece 21 stretches out, the piston 20 slides to a first position, and then the atmosphere can enter the control port; when the vacuumizing operation is not needed (i.e. under normal state), the piston driving piece 21 is powered off, the output end of the piston driving piece 21 is contracted, the piston 20 is enabled to slide to the second position, the air is blocked from entering the control port, meanwhile, the left side of the airflow channel with the control caliber is communicated with the valve cavity, and the two sides of the diaphragm 10 are kept in the same vacuum environment, so that zero pressure difference is achieved.
As some embodiments of the present application, the piston driver 21 is a linear driver capable of implementing the reciprocating motion of the piston 20, such as a cylinder, an electromagnet, or the like.
In fig. 1-2, a first spring 22 is disposed in the air flow path for providing a smoother and quicker movement of the piston 20 from the first position to the second position; when the piston 20 moves to the first position, the elastic force of the first spring 22 increases; when the piston 20 moves to the second position, the elastic force of the first spring 22 decreases.
As a specific embodiment of the application, when the vacuumizing operation is needed, the piston driving piece 21 is electrified, the output end of the piston driving piece 21 stretches out, so that the piston 20 slides to a first position and presses the first spring 22, and the deformation elasticity of the first spring 22 is increased; when the vacuumizing operation is not needed (i.e. in a normal state), the piston driving member 21 is powered off, the output end of the piston driving member 21 is contracted, the piston 20 is enabled to slide to the second position and gradually move away from the first spring 22, and the deformation elastic force of the first spring 22 is restored to be reduced.
The specific structure of the airflow channel in the application is as follows: the airflow channel comprises a first channel 2.1, a second channel 2.3, a third channel 2.5 and a fourth channel 2.7 which are sequentially connected;
one end of the first channel 2.1 extends to the side surface of the starter 2 and is communicated with the valve cavity of the valve 1;
a first step 2.2 is formed at the joint of the other end of the first channel 2.1 and the second channel 2.3, the first spring 22 is arranged in the second channel 2.3, one end of the first spring 22 abuts against the first step 2.2, and the other end of the first spring 22 abuts against the piston 20;
a third step 2.6 is formed at the joint of the other end of the third channel 2.5 and the fourth channel 2.7, one side of the third channel 2.5 is communicated with the control port, and the piston 20 is arranged in the third channel 2.5 in a sliding manner;
the piston driving piece 21 is connected to the fourth channel 2.7, and one end of the piston driving piece 21 abuts against the third step 2.6;
the fourth channel 2.7 is a threaded hole, one end of the piston driving member 21 is provided with an external thread, the piston driving member 21 is in threaded connection with the threaded hole, and the atmosphere can enter the third channel 2.5 through the threaded hole.
In fig. 2 and 3, the left end of the housing of the actuator 2 is bent downwards and has a cylindrical positioning portion along which the first channel 2.1 extends; the top of the valve 1 is provided with countersunk threaded holes, the front end and the rear end of the shell of the starter 2 extend outwards to form extension ends (not shown), and the extension ends are connected with the valve 1 through bolts to realize the installation of the starter 2; the valve 1 and the starter 2 can be transported independently, the exhaust port of the valve 1 is blocked by a blocking cover during the independent transportation, and screws are screwed into the countersunk threaded holes to block the exhaust port, so that the valve cavity of the valve 1 can be ensured to be clean and dust-free; when the valve 1 and the starting valve 2 are assembled, the screw in the countersunk threaded hole is taken out, the positioning part is inserted into the countersunk threaded hole to tightly fit the countersunk threaded hole and the countersunk threaded hole, and then the extension part is fixed by the bolt, so that the sealing connection between the valve 1 and the starter 2 can be realized.
On the basis of not increasing the number of components in the starter 2, the first channel 2.1, the second channel 2.3, the third channel 2.5 and the fourth channel 2.7 which are sequentially connected are beneficial to one-time injection molding of the starter 2, so that low cost can be realized, and the first step 2.2 and the third step 2.6 can also provide a component limiting function.
In a specific embodiment, as shown in fig. 1 and 2, the threaded connection between the fourth channel 2.7 and the piston driver 21 is not a sealed connection, and the atmosphere can flow through the thread to the left end face of the piston driver 21 at the end of the thread, and then enter the third channel 2.5;
therefore, when the vacuumizing operation is needed, the piston driving piece 21 is electrified, the output end of the piston driving piece 21 stretches out, so that the piston 20 slides to the first position and leaves the left end face of the piston driving piece 21, and then the atmosphere can enter the control port through the fourth channel 2.7, the left end face of the piston driving piece 21 and the third channel 2.5; when the vacuumizing operation is not needed (i.e. under normal state), the piston driving piece 21 is powered off, the output end of the piston driving piece 21 contracts, the piston 20 is enabled to slide to the second position and the left end face of the piston driving piece 21 is blocked, the air cannot enter the third channel 2.5 from the fourth channel 2.7, the air is blocked from entering the control port, the control port is communicated with the valve cavity through the third channel 2.5, the second channel 2.3 and the first channel 2.1, and the two sides of the diaphragm 10 are maintained in the same vacuum environment, so that zero pressure difference is achieved.
In the application, on the basis of not increasing the number of components in the starter 2, a second step 2.4 is formed at the joint of the other end of the second channel 2.3 and the third channel 2.5;
the piston 20 is provided with a first sealing ring 20a and a second sealing ring 20b;
when the piston 20 is in the first position, the second sealing ring 20b is in contact with the first step 2.2;
when the piston 20 is in the second position, the first seal ring 20a is in contact with the end face of the piston driver 21.
In one embodiment, as shown in fig. 2 and 3, the second step 2.4 provides a first position movement limit for the piston 20, and the first seal ring 20a and the second seal ring 20b improve the tightness of the piston 20 at two positions;
specifically, when the vacuumizing operation is needed, the piston driving member 21 is electrified, the output end of the piston driving member 21 stretches out, when the piston 20 slides to the first position, the first sealing ring 20a seals the second step 2.2, the second sealing ring 20b leaves the left end face of the piston driving member 21, and then the atmosphere can enter the control port through the fourth channel 2.7, the left end face of the piston driving member 21 and the third channel 2.5; when the vacuumizing operation is not needed (i.e. under normal state), the piston driving piece 21 is powered off, the output end of the piston driving piece 21 contracts, the piston 20 slides to the second position, the second sealing ring 20b seals the left end face of the piston driving piece 21, the first sealing ring 20a leaves the second step 2.2, the air cannot enter the third channel 2.5 from the fourth channel 2.7, the air is blocked from entering the control port, the control port is communicated with the valve cavity through the third channel 2.5, the second channel 2.3 and the first channel 2.1, and zero pressure difference is realized by maintaining the two sides of the diaphragm 10 under the same vacuum environment.
As a specific embodiment of the present application, the piston driving member 21 is an electromagnet, the output end of the piston driving member 21 is configured with an armature 21a, a baffle 21b is disposed on the armature 21a, the piston 20 is an electromagnetic valve core, a blind hole for accommodating the armature 21a is disposed on the piston 20, and when the output end of the piston driving member 21 extends out, the baffle 21b abuts against the end face of the piston 20.
When the vacuumizing operation is needed, the piston driving piece 21 is electrified, the armature 21a pushes the piston 20 to slide to the first position leftwards, the extrusion elastic force of the first spring 22 is increased, the first sealing ring 20a seals the second step 2.2, the second sealing ring 20b leaves the left end face of the piston driving piece 21, and then the atmosphere can enter the control port through the fourth channel 2.7, the left end face of the piston driving piece 21 and the third channel 2.5; when the vacuumizing operation is not needed (i.e. under normal state), the piston driving member 21 is powered off, the armature moves rightwards, the piston 20 moves rightwards to a second position under the action of the elastic force of the first spring 22, the second sealing ring 20b seals the left end face of the piston driving member 21, the first sealing ring 20a leaves the second step 2.2, the air cannot enter the third channel 2.5 from the fourth channel 2.7, the air is blocked from entering the control port, and the control port is communicated with the valve cavity through the third channel 2.5, the second channel 2.3 and the first channel 2.1.
The matching length of the piston driving piece 21 and the piston 20 can be increased through the matching of the blind hole and the armature 21a, and the motion straightness of the piston 20 is improved.
In one embodiment, the piston 20 is a plastic piece, and the armature 21a is in clearance fit with the blind hole; when the piston 20 is driven to move leftwards to the first position, the limit of the baffle piece 21b is realized, when the piston 20 is driven to move rightwards to the second position, the limit is realized by the elastic force of the first spring 22, the mobility of the piston 20 is increased, and the connection relation between the parts is reduced, so that the single parts can be conveniently removed and replaced.
In the present application, the specific structure of the valve 1 is: the valve 1 further comprises a valve plate 12, a diaphragm gasket 13, a second spring 14 and an adjusting spring support 15;
the valve plate 12 is positioned on the side surface of the valve 1 and fixes the edge of the diaphragm 10;
the diaphragm gasket 13 is located between the diaphragm 10 and the second spring 14;
the spring support 15 is arranged inside the valve 1, the valve core 11 penetrates through the spring support 15, the second spring 14 is sleeved on the valve core 11, and two ends of the second spring 14 are respectively abutted to the diaphragm gasket 13 and the spring support 15.
Specifically, the valve plate 12 provides a limiting function on the upper side of the diaphragm 10, and the diaphragm gasket 13 separates the second spring 14 from the diaphragm 10, reducing wear of the diaphragm 10; when the vacuumizing operation is needed, the diaphragm 10 deforms to move downwards, the stretching elasticity of the second spring 14 is increased, and the valve core 11 moves downwards to open the air inlet of the valve 1; when the valve core 11 moves upwards to close the air inlet of the valve 1 under the pushing of the second spring 14 without vacuumizing operation (namely, under normal state), the deformation of the diaphragm 10 is recovered, and the elasticity of the second spring 14 is reduced.
In order to improve the tightness when the valve is closed, a valve seat 16 is arranged at the air inlet of the valve 1, and the valve core 11 is contacted with the valve seat 16 when the air inlet is closed.
Referring to fig. 1-4, the application further provides a vacuum pumping system for pumping water in a fire engine 3, which comprises an air suction starting valve and a vacuum pump 4, wherein the air outlet of the water pump 3 is connected with at least two vacuum pumping systems through pipelines respectively;
in any vacuum pumping system, the exhaust port of the water pump 3 is connected with the air inlet of the valve 1 through a pipeline, and the exhaust port of the valve 1 is connected with the air inlet of the vacuum pump 4 through a pipeline.
When the vacuum pump is particularly applied to a fire engine, two vacuum pumping systems are distributed on two sides of the fire engine, a switch in one vacuum pumping system simultaneously controls the operation of the piston driving piece 21 and the vacuum pump 4, and the piston driving piece 21 and the vacuum pump 4 are simultaneously started and simultaneously closed;
the structure and principle of the switch 5 are disclosed in the prior art and will not be described in detail here.
When the fire engine needs to take water, the switch 5 at any side is pressed down, the vacuum pump 4 and the piston driving piece 21 can be started simultaneously, the air suction starting valve is opened, residual gas in the pipeline is pumped out, negative pressure is formed, the water source is pressed to the water pump 3 to take water for fire extinguishment by means of atmospheric pressure, the switch 5 is not required to be pressed down by bypassing to a specific side of the fire engine, precious rescue time is saved, and the air suction starting valve in another non-working vacuumizing system cannot be influenced by the working vacuumizing system, so that the purposes of mutual independence and mutual noninterference among systems are achieved.
When the flow requirement of the water pump is large and a single vacuumizing system cannot meet the vacuumizing requirement, two switches 5 on two sides are pressed down, so that the two vacuumizing systems are overlapped for use, and the water taking requirement is met.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (10)
1. An air suction starting valve, which is characterized in that: comprising
The valve comprises a valve (1), wherein one end of the valve (1) is provided with a diaphragm (10), the diaphragm (10) is connected with a valve core (11), the valve core (11) can open or close an air inlet of the valve (1) under the deformation of the diaphragm (10), and one side of the diaphragm (10) on the valve (1) is provided with a control port; and
the device comprises an actuator (2), wherein an air flow channel is formed in the actuator (2), one end of the air flow channel is communicated with the atmosphere, the other end of the air flow channel is communicated with a valve cavity of a valve (1), and one side of the air flow channel is communicated with a control port;
wherein a piston (20) is slidably arranged in the airflow channel, and the piston (20) has a first position and a second position;
when the piston (20) is in the first position, the air flow channel is communicated with the atmosphere and the control port respectively, the air flow channel is sealed with the valve cavity, and the diaphragm (10) is deformed;
when the piston (20) is in the second position, the air flow channel is respectively communicated with the valve cavity and the control port, the air flow channel is sealed from the atmosphere, and the diaphragm (10) is recovered to deform.
2. The suction activated valve as claimed in claim 1, wherein:
one end of the air flow channel is provided with a piston driving piece (21), and the output end of the piston driving piece (21) is connected with the piston (20);
-the piston (20) slides to a first position when the output end of the piston drive (21) is extended;
when the output end of the piston driver (21) is contracted, the piston (20) slides to a second position.
3. The suction activated valve as claimed in claim 2, wherein:
a first spring (22) is arranged in the airflow channel;
when the piston (20) moves to a first position, the elastic force of the first spring (22) increases;
when the piston (20) moves to the second position, the elastic force of the first spring (22) decreases.
4. An inspiration actuated valve according to claim 3, wherein:
the airflow channel comprises a first channel (2.1), a second channel (2.3), a third channel (2.5) and a fourth channel (2.7) which are sequentially connected;
one end of the first channel (2.1) extends to the side surface of the starter (2) and is communicated with the valve cavity of the valve (1);
a first step (2.2) is formed at the joint of the other end of the first channel (2.1) and the second channel (2.3), the first spring (22) is arranged in the second channel (2.3), one end of the first spring (22) is propped against the first step (2.2), and the other end of the first spring (22) is propped against the piston (20);
a third step (2.6) is formed at the joint of the other end of the third channel (2.5) and the fourth channel (2.7), one side of the third channel (2.5) is communicated with the control port, and the piston (20) is arranged in the third channel (2.5) in a sliding manner;
the piston driving piece (21) is connected to the fourth channel (2.7), and one end of the piston driving piece (21) is propped against the third step (2.6);
the fourth channel (2.7) is a threaded hole, one end of the piston driving piece (21) is provided with external threads, the piston driving piece (21) is connected with the threaded hole in a threaded mode, and the atmosphere can enter the third channel (2.5) through the threaded hole.
5. The suction activated valve as set forth in claim 4 wherein: a second step (2.4) is formed at the joint of the other end of the second channel (2.3) and the third channel (2.5);
the piston (20) is provided with a first sealing ring (20 a) and a second sealing ring (20 b);
when the piston (20) is in the first position, the second sealing ring (20 b) is in contact with the first step (2.2);
when the piston (20) is in the second position, the first sealing ring (20 a) is in contact with the end face of the piston driver (21).
6. The suction activated valve as set forth in claim 4 wherein:
the output end of the piston driving piece (21) is provided with an armature (21 a), the armature (21 a) is provided with a baffle (21 b), the piston (20) is provided with a blind hole for accommodating the armature (21 a), and when the output end of the piston driving piece (21) stretches out, the baffle (21 b) abuts against the end face of the piston (20).
7. The inspiration valve of any of claims 1-6, wherein: the valve (1) further comprises a valve plate (12), a diaphragm gasket (13), a second spring (14) and an adjusting spring support (15);
the valve plate (12) is positioned on the side surface of the valve (1) and fixes the edge of the diaphragm (10);
the diaphragm gasket (13) is positioned between the diaphragm (10) and the second spring (14);
the spring support (15) is arranged inside the valve (1), the valve core (11) penetrates through the spring support (15), the second spring (14) is sleeved on the valve core (11), and two ends of the second spring (14) are respectively abutted to the diaphragm gasket (13) and the spring support (15).
8. The suction activated valve as set forth in claim 7 wherein: a valve seat (16) is arranged at the air inlet of the valve (1), and the valve core (11) is contacted with the valve seat (16) when the air inlet is closed.
9. The utility model provides a vacuum pumping system for the work of drawing water of fire engine water pump (3), its characterized in that: comprising an inhalation starting valve according to any one of claims 1 to 8, and further comprising a vacuum pump (4), wherein the exhaust ports of the water pump (3) are respectively connected with at least two vacuumizing systems through pipelines;
in any vacuumizing system, an exhaust port of the water pump (3) is connected with an air inlet of the valve (1) through a pipeline, and an exhaust port of the valve (1) is connected with an air inlet of the vacuum pump (4) through a pipeline.
10. The evacuation system of claim 9, wherein: the vacuum pump is characterized by further comprising a switch (5), and the vacuum pump (4) and the starter (2) are respectively connected to the switch (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311178345.1A CN117267089A (en) | 2023-09-13 | 2023-09-13 | Suction starting valve and vacuumizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311178345.1A CN117267089A (en) | 2023-09-13 | 2023-09-13 | Suction starting valve and vacuumizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117267089A true CN117267089A (en) | 2023-12-22 |
Family
ID=89211526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311178345.1A Pending CN117267089A (en) | 2023-09-13 | 2023-09-13 | Suction starting valve and vacuumizing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117267089A (en) |
-
2023
- 2023-09-13 CN CN202311178345.1A patent/CN117267089A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7718907B2 (en) | Combination pressure switch | |
| EP0062060B1 (en) | Back-flow prevention valve | |
| CN117267089A (en) | Suction starting valve and vacuumizing system | |
| US20100012475A1 (en) | Combination pressure switch | |
| EP1994319B1 (en) | Suction valve | |
| CN111379705A (en) | Compressor, operation control method of compressor and refrigeration equipment | |
| CN210118241U (en) | Electromagnetic valve and air compressor | |
| CN109177953B (en) | Controller and control method for reducing energy consumption | |
| CN219035661U (en) | One-way valve for petroleum equipment | |
| CN109915645B (en) | Angle valve | |
| US8973604B2 (en) | Device for producing and providing a vacuum, and ventilation valve | |
| CN221033412U (en) | Anti-jamming self-reciprocating pneumatic motor with operation monitoring function | |
| CN209959977U (en) | Angle valve | |
| CN219071707U (en) | Asynchronous stop valve assembly and breathing equipment | |
| CN214197396U (en) | Novel electromagnetic valve | |
| CN214616961U (en) | Novel vacuum generator | |
| CN212899744U (en) | Lowest pressure starting valve for adsorption type air dryer | |
| CN114593063A (en) | Vacuum pump with bypass structure | |
| CN112963351B (en) | Compressor variable volume structure and compressor | |
| CN113586791B (en) | Electromagnetic valve with rapid exhaust function | |
| CN220910129U (en) | Pneumatic pushing module with compact structure | |
| CN218619114U (en) | Vacuum logic valve | |
| CN216812916U (en) | Push type vacuum valve | |
| CN217271536U (en) | Full dust-proof booster mechanism | |
| CN220726915U (en) | Electric control clutch booster |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |