US20200355077A1 - Pulsation-free wet spraying machine - Google Patents
Pulsation-free wet spraying machine Download PDFInfo
- Publication number
- US20200355077A1 US20200355077A1 US16/965,220 US201816965220A US2020355077A1 US 20200355077 A1 US20200355077 A1 US 20200355077A1 US 201816965220 A US201816965220 A US 201816965220A US 2020355077 A1 US2020355077 A1 US 2020355077A1
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- United States
- Prior art keywords
- concrete
- auxiliary
- distribution valve
- disposed
- feeding mechanism
- 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.)
- Abandoned
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- 238000005507 spraying Methods 0.000 title claims abstract description 25
- 239000004567 concrete Substances 0.000 claims abstract description 138
- 239000000463 material Substances 0.000 claims abstract description 70
- 238000005086 pumping Methods 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 7
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000010349 pulsation Effects 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000011378 shotcrete Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- 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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
- F04B15/023—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous supply of fluid to the pump by gravity through a hopper, e.g. without intake valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
- B05B7/1404—Arrangements for supplying particulate material
- B05B7/144—Arrangements for supplying particulate material the means for supplying particulate material comprising moving mechanical means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
-
- 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
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/02—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
-
- 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
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
- F04B11/005—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons
- F04B11/0075—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons connected in series
- F04B11/0083—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons connected in series the pistons having different cross-sections
-
- 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
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/0003—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber
- F04B7/0011—Piston machines or pumps characterised by having positively-driven valving the distribution member forming both the inlet and discharge distributor for one single pumping chamber and having an oscillating movement
-
- 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
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/0019—Piston machines or pumps characterised by having positively-driven valving a common distribution member forming a single discharge distributor for a plurality of pumping chambers
- F04B7/0026—Piston machines or pumps characterised by having positively-driven valving a common distribution member forming a single discharge distributor for a plurality of pumping chambers and having an oscillating movement
-
- 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
- F04B7/00—Piston machines or pumps characterised by having positively-driven valving
- F04B7/0042—Piston machines or pumps characterised by having positively-driven valving with specific kinematics of the distribution member
- F04B7/0049—Piston machines or pumps characterised by having positively-driven valving with specific kinematics of the distribution member for oscillating distribution members
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
Definitions
- the present disclosure relates to the technical field of engineering equipment, and in particular to a pulsation-free wet spraying machine.
- Concrete wet spraying machines are widely applied to locations such as coal mine roadways and road tunnels requiring concrete spraying supporting.
- the common concrete wet spraying machine is a plunger-type concrete wet spraying machine that works as follows: pumping is realized by switching a distribution valve. In a pumping process, a pulsation phenomenon may be caused due to swing of the distribution valve, thereby increasing a pipe blocking probability in the pumping process and leading to a rebound problem in a spraying process.
- the present disclosure provides a pulsation-free wet spraying machine. A specific technical solution is described below.
- a pulsation-free wet spraying machine includes a frame, a pumping mechanism, a swing mechanism and a hydraulic system, where the pumping mechanism includes a hopper, a material chamber, a concrete feeding mechanism, an auxiliary feeding mechanism, a distribution valve and a discharge pipe, the hopper is disposed above the material chamber, the concrete feeding mechanism includes two main hydraulic cylinders, two concrete pistons and two concrete cylinders, the auxiliary feeding mechanism includes an auxiliary hydraulic cylinder, an auxiliary concrete piston and an auxiliary concrete cylinder, and the concrete cylinder of the concrete feeding mechanism is in communication with the material chamber; the distribution valve is disposed inside the material chamber and in communication with the concrete cylinder and the discharge pipe; the discharge pipe is disposed on the material chamber and is a three-way pipe including an auxiliary discharge pipe and a main discharge pipe, the auxiliary discharge pipe is connected with the auxiliary concrete cylinder, an air hole is disposed on the auxiliary concrete cylinder, and an auxiliary piston rod of the auxiliary feeding mechanism passes through a mandrel to push
- a concrete piston is disposed at an end of a hydraulic cylinder piston rod of the concrete feeding mechanism and moves inside the concrete cylinder; an auxiliary concrete piston is disposed at an end of the auxiliary piston rod of the auxiliary feeding mechanism and moves inside the auxiliary concrete cylinder.
- the material chamber is disposed below the hopper and communicates with the hopper, the two main hydraulic cylinders of the concrete feeding mechanism are disposed in parallel at a side surface of the material chamber, the main hydraulic cylinder is mounted on a water rinsing bath, and the auxiliary hydraulic cylinder is mounted above the hydraulic cylinder.
- a distribution valve, a front friction plate, a rear friction plate, a distribution valve friction plate, a rubber spring and a sealing ring are disposed within the material chamber, the front friction plate is disposed at a front end of the distribution valve, the distribution valve friction plate is disposed at a rear end of the distribution valve, the rubber spring is disposed between the distribution valve friction plate and the distribution valve, and the sealing ring is disposed between the distribution valve and the front friction plate.
- one through-hole is disposed on the front friction plate, and two through-holes are disposed on the rear friction plate.
- the mandrel is square in the middle and circular at both ends, the mandrel is mounted through a mandrel cover in cooperation with a fitting slot at an upper part of the distribution valve, and the mandrel cover is fixed with nuts; the distribution valve swings along with the mandrel.
- the concrete piston of the concrete feeding mechanism retracts in the concrete cylinder to suck a material into the concrete cylinder, and the piston rod pushes the concrete piston to push the material out of the concrete cylinder so as to transport the material to the discharge pipe through the distribution valve; when the concrete feeding mechanism pushes the material, the auxiliary concrete piston of the auxiliary feeding mechanism retracts in the auxiliary concrete cylinder to suck a material from the auxiliary discharge pipe so that the material n the auxiliary concrete cylinder is pushed to the discharge pipe when the distributing valve swings.
- baffle plates at both wings of the distribution valve friction plate block outlets of two concrete cylinders.
- the pumping pulsation problem caused by the swing of the distribution valve in a pumping process is solved by disposing the auxiliary feeding mechanism, thereby reducing the pipe blocking probability in the pumping process; a lower end of the hopper is connected with the material chamber so that the material flows into the material chamber due to its weight; the discharge pipe is disposed as a three-way pipe to help the auxiliary concrete piston to retract during a pumping process of the concrete feeding mechanism to suck a part of material into the auxiliary concrete cylinder; during the swinging process of the distribution valve, the auxiliary concrete piston in the auxiliary concrete cylinder pushes the sucked material for compensation, thereby avoiding the pumping pulsation phenomenon and preventing the sprayed concrete rebound problem; the auxiliary discharge pipe is connected with the auxiliary concrete cylinder which is provided with the air hole at a side connecting with the material chamber, thereby avoiding the problem that the auxiliary concrete piston cannot retract due to excessive air pressure resulted from compressed air; friction plates are disposed at the front and
- FIG. 1 is a schematic diagram illustrating an overall structure of a pulsation-free wet spraying machine according to an example of the present disclosure.
- FIG. 2 is a schematic diagram illustrating mounting structures of a pumping mechanism and a swing mechanism according to an example of the present disclosure.
- FIG. 3 is a schematic diagram illustrating partial structures of a pumping mechanism and a swing mechanism according to an example of the present disclosure.
- FIG. 4 is a sectional schematic diagram illustrating structures of a pumping mechanism and a swing mechanism according to an example of the present disclosure.
- FIG. 5 is a schematic diagram illustrating a swing mechanism according to an example of the present disclosure.
- FIG. 6 is a mounting schematic diagram illustrating a distribution valve according to an example of the present disclosure.
- FIG. 7 is a schematic diagram illustrating a swing structure of a distribution valve according to an example of the present disclosure.
- FIG. 8 is a structural schematic diagram illustrating a rear friction plate of a distribution valve according to an example of the present disclosure.
- FIG. 9 is a structural schematic diagram illustrating a distribution valve friction plate according to an example of the present disclosure.
- FIG. 10 is a structural schematic diagram illustrating a front friction plate of a distribution valve according to an example of the present disclosure.
- FIG. 11 is a structural schematic diagram illustrating a discharge pipe according to an example of the present disclosure.
- the pulsation-free wet spraying machine includes a frame 1 , a pumping mechanism 2 , a swing mechanism 3 and a hydraulic system 4 .
- Wheels are disposed on the frame 1 to facilitate movement of the wet spraying machine;
- the hydraulic system 4 includes a hydraulic oil tank and a motor, the hydraulic oil tank is disposed at an upper part of the frame, the motor and the hydraulic oil tank drive hydraulic cylinders of the swing mechanism 3 and the pumping mechanism 2 to work, and thus, the structure outputs stable power safely and reliably;
- the swing mechanism 3 and the pumping mechanism 2 are mounted cooperatively, a concrete feeding mechanism of the pumping mechanism 2 is disposed at the bottom of the frame, and a hopper 21 of the pumping mechanism 2 is disposed at an upper front part of the frame.
- the pumping mechanism 2 realizes material pumping
- the swing mechanism 3 brings a mandrel 34 and a distribution valve 26 to swing through a swing arm 32 .
- the pumping mechanism 2 includes a hopper 21 , a material chamber 22 , a concrete feeding mechanism 23 , an auxiliary feeding mechanism 24 , a distribution valve 26 , a water rinsing bath 27 and a discharge pipe 25 .
- a lower end of the hopper 21 is connected with the material chamber 22 .
- the concrete feeding mechanism 23 includes two main hydraulic cylinders 234 , two concrete pistons 231 and two concrete cylinders 233
- the auxiliary feeding mechanism 24 includes an auxiliary hydraulic cylinder 244 , an auxiliary concrete piston 241 and an auxiliary concrete cylinder 243
- the concrete cylinder 233 of the concrete feeding mechanism 23 is in communication with the material chamber 22 .
- the water rinsing bath 27 and the material chamber 22 are arranged in parallel, a pulling rod 271 is disposed between the water rinsing bath 27 and the material chamber 22 , and three through-holes are disposed on the water rinsing bath 27 to facilitate mounting.
- the distribution valve 26 is disposed inside the material chamber 22 and in communication with the concrete cylinder 233 of the concrete feeding mechanism and the discharge pipe 25 .
- the concrete piston 231 is disposed at an end of a piston rod 232 of the concrete feeding mechanism 23 and moves inside the concrete cylinder 233 ; the auxiliary concrete piston 241 is disposed at an end of an auxiliary piston rod 242 of the auxiliary feeding mechanism 24 and moves inside the auxiliary concrete cylinder 243 .
- the concrete feeding mechanism 23 pumps a material through operation of two main hydraulic cylinders 234 in cooperation with the disposed auxiliary feeding mechanism 24 , thereby solving the pumping pulsation problem caused by caused by the swing of the distribution valve 26 in a pumping process of the concrete feeding mechanism 23 .
- the hopper 21 is mounted above the material chamber 22
- two concrete cylinders 233 of the concrete feeding mechanism 23 are symmetrically arranged at a side surface of the material chamber 22
- the water rinsing bath 27 is mounted at a rear side of the concrete feeding mechanism 23
- the auxiliary feeding mechanism 24 is mounted above the concrete feeding mechanism 23 .
- a distribution valve 26 , a front friction plate 222 , a rear friction plate 223 , a distribution valve friction plate 224 , a rubber spring 225 and a sealing ring 226 are disposed within the material chamber 22 , the front friction plate 222 is disposed at a front end of the distribution valve 26 , and the distribution valve friction plate 224 is disposed at a rear end of the distribution valve 26 , where the front end of the distribution valve is an end connecting the distribution valve 26 with the discharge pipe 25 , and the rear end of the distribution valve is an end connecting the distribution valve 26 with the concrete cylinder 233 .
- the rubber spring 225 is disposed between the distribution valve friction plate 224 and the distribution valve 26 to enable the distribution valve friction plate and the rear friction plate to be in close contact, thereby strengthening sealing.
- a through-hole having a circular hole diameter slightly larger than or equal to the concrete cylinder 233 is disposed on the distribution valve friction plate 224 , and baffle plates are disposed at both wings of the through-hole; when the through-hole of the distribution valve friction plate 224 is rotated to be between two concrete cylinders 233 , the baffle plates at the both wings block outlets of the concrete cylinders 233 .
- the sealing ring 226 is disposed between the distribution valve 26 and the front friction plate 222 to seal up a pumping space.
- the discharge pipe 25 is disposed on the material chamber 22 and is a three-way pipe including an auxiliary discharge pipe 252 and a main discharge pipe 253 , the auxiliary discharge pipe 253 is connected with the auxiliary concrete cylinder 243 on which an air hole 251 is disposed, and the auxiliary piston rod 242 passes through the mandrel 34 to push the auxiliary concrete piston 241 to move inside the auxiliary concrete cylinder 243 . Therefore, the problem that the auxiliary concrete piston 241 cannot retract due to the excessive air pressure is avoided.
- the swing mechanism 3 includes a swing hydraulic cylinder 31 , a swing arm 32 , a mandrel 34 and a swing hydraulic cylinder base 33 .
- the swing hydraulic cylinder base 33 is mounted at an outer side of the material chamber 22 , the swing hydraulic cylinders 31 are symmetrically arranged at both sides of the swing hydraulic cylinder base, and the swing arm 32 is hinged with the swing hydraulic cylinders 31 and the wing arm 32 is mounted through a spline in cooperation with the mandrel 34 .
- the swing hydraulic cylinder base 33 is in a trapezoidal shape, the swing arm 32 is mounted at a short-side position of the hydraulic cylinder base, and two swing hydraulic cylinders 31 are arranged at two inclined sides of the swing hydraulic cylinder base 33 respectively.
- the mandrel 34 is driven to swing so as to drive the distribution valve 26 to swing.
- the mandrel 34 is square in the middle and circular at both ends, the mandrel 34 is mounted through a mandrel cover 35 in cooperation with a fitting slot at the upper part of the distribution valve 26 , and the mandrel cover 35 is fixed with nuts.
- the distribution valve 26 swings along with the mandrel 34 , and the auxiliary piston rod 242 of the auxiliary feeding mechanism 24 passes through the mandrel 34 .
- the hydraulic system 4 includes a hydraulic oil tank and a motor, and the pumping mechanism 2 , the swing mechanism 3 and the hydraulic system 4 are all disposed on the frame 1 .
- the above pulsation-free wet spraying machine specifically works in the following process: firstly, material is poured into the hopper 21 and then flows into the material chamber 22 through the hopper 21 , where the concrete piston 231 inside the concrete cylinder 233 of one concrete feeding mechanism 23 retracts to enable the concrete cylinder 233 to suck the material from the material chamber 22 , and the other concrete feeding mechanism 23 pressurizes and pushes the material in the concrete cylinder 233 through the concrete piston 231 , so that the material reaches the discharge pipe 25 through the distribution valve 26 ; the distribution valve 26 swings along with the mandrel 34 , the concrete piston 231 of the concrete feeding mechanism 23 completing pumping retracts at this time to enable the corresponding concrete cylinder 233 to suck material from the material chamber 22 , and the concrete piston 231 of the concrete feeding mechanism completing material sucking pushes the previously sucked material.
- the concrete feeding mechanism repeats the above work.
- the auxiliary concrete piston 241 in the auxiliary concrete cylinder 243 connected with the discharge pipe 25 retracts to enable the auxiliary concrete cylinder 243 to suck the material from the auxiliary discharge pipe 253 ;
- the distribution valve 26 swings, the auxiliary piston rod 242 of the auxiliary feeding mechanism 24 pushes the auxiliary concrete piston 241 to complete feeding.
- the baffle plates at both wings of the distribution valve friction plate 224 block the outlets of the concrete cylinders 233 to ensure stable feeding. Therefore, the pumping pulsation phenomenon is avoided.
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Abstract
Description
- The present disclosure relates to the technical field of engineering equipment, and in particular to a pulsation-free wet spraying machine.
- Concrete wet spraying machines are widely applied to locations such as coal mine roadways and road tunnels requiring concrete spraying supporting. The common concrete wet spraying machine is a plunger-type concrete wet spraying machine that works as follows: pumping is realized by switching a distribution valve. In a pumping process, a pulsation phenomenon may be caused due to swing of the distribution valve, thereby increasing a pipe blocking probability in the pumping process and leading to a rebound problem in a spraying process.
- To solve the pulsation problem and the sprayed concrete rebound problem of the concrete wet spraying machine in a working process, the present disclosure provides a pulsation-free wet spraying machine. A specific technical solution is described below.
- A pulsation-free wet spraying machine includes a frame, a pumping mechanism, a swing mechanism and a hydraulic system, where the pumping mechanism includes a hopper, a material chamber, a concrete feeding mechanism, an auxiliary feeding mechanism, a distribution valve and a discharge pipe, the hopper is disposed above the material chamber, the concrete feeding mechanism includes two main hydraulic cylinders, two concrete pistons and two concrete cylinders, the auxiliary feeding mechanism includes an auxiliary hydraulic cylinder, an auxiliary concrete piston and an auxiliary concrete cylinder, and the concrete cylinder of the concrete feeding mechanism is in communication with the material chamber; the distribution valve is disposed inside the material chamber and in communication with the concrete cylinder and the discharge pipe; the discharge pipe is disposed on the material chamber and is a three-way pipe including an auxiliary discharge pipe and a main discharge pipe, the auxiliary discharge pipe is connected with the auxiliary concrete cylinder, an air hole is disposed on the auxiliary concrete cylinder, and an auxiliary piston rod of the auxiliary feeding mechanism passes through a mandrel to push the auxiliary concrete piston to move inside the auxiliary concrete cylinder; the swing mechanism includes a swing hydraulic cylinder, a swing arm and a swing hydraulic cylinder base, the swing hydraulic cylinder base is mounted at an outer side of the material chamber, the swing hydraulic cylinders are symmetrically arranged at both sides of the swing hydraulic cylinder base, and the swing arm is hinged with the swing hydraulic cylinder; the swing arm is mounted through a spline in cooperation with the mandrel; the hydraulic system include a hydraulic oil tank and a motor, and the pumping mechanism, the swing mechanism and the hydraulic system are all disposed on the frame.
- Preferably, a concrete piston is disposed at an end of a hydraulic cylinder piston rod of the concrete feeding mechanism and moves inside the concrete cylinder; an auxiliary concrete piston is disposed at an end of the auxiliary piston rod of the auxiliary feeding mechanism and moves inside the auxiliary concrete cylinder.
- Preferably, the material chamber is disposed below the hopper and communicates with the hopper, the two main hydraulic cylinders of the concrete feeding mechanism are disposed in parallel at a side surface of the material chamber, the main hydraulic cylinder is mounted on a water rinsing bath, and the auxiliary hydraulic cylinder is mounted above the hydraulic cylinder.
- Preferably, a distribution valve, a front friction plate, a rear friction plate, a distribution valve friction plate, a rubber spring and a sealing ring are disposed within the material chamber, the front friction plate is disposed at a front end of the distribution valve, the distribution valve friction plate is disposed at a rear end of the distribution valve, the rubber spring is disposed between the distribution valve friction plate and the distribution valve, and the sealing ring is disposed between the distribution valve and the front friction plate.
- Preferably, one through-hole is disposed on the front friction plate, and two through-holes are disposed on the rear friction plate.
- Preferably, the mandrel is square in the middle and circular at both ends, the mandrel is mounted through a mandrel cover in cooperation with a fitting slot at an upper part of the distribution valve, and the mandrel cover is fixed with nuts; the distribution valve swings along with the mandrel.
- Preferably, the concrete piston of the concrete feeding mechanism retracts in the concrete cylinder to suck a material into the concrete cylinder, and the piston rod pushes the concrete piston to push the material out of the concrete cylinder so as to transport the material to the discharge pipe through the distribution valve; when the concrete feeding mechanism pushes the material, the auxiliary concrete piston of the auxiliary feeding mechanism retracts in the auxiliary concrete cylinder to suck a material from the auxiliary discharge pipe so that the material n the auxiliary concrete cylinder is pushed to the discharge pipe when the distributing valve swings.
- Preferably, when the auxiliary concrete piston in the auxiliary concrete cylinder pushes the material, baffle plates at both wings of the distribution valve friction plate block outlets of two concrete cylinders.
- The present disclosure has following beneficial effects: the pumping pulsation problem caused by the swing of the distribution valve in a pumping process is solved by disposing the auxiliary feeding mechanism, thereby reducing the pipe blocking probability in the pumping process; a lower end of the hopper is connected with the material chamber so that the material flows into the material chamber due to its weight; the discharge pipe is disposed as a three-way pipe to help the auxiliary concrete piston to retract during a pumping process of the concrete feeding mechanism to suck a part of material into the auxiliary concrete cylinder; during the swinging process of the distribution valve, the auxiliary concrete piston in the auxiliary concrete cylinder pushes the sucked material for compensation, thereby avoiding the pumping pulsation phenomenon and preventing the sprayed concrete rebound problem; the auxiliary discharge pipe is connected with the auxiliary concrete cylinder which is provided with the air hole at a side connecting with the material chamber, thereby avoiding the problem that the auxiliary concrete piston cannot retract due to excessive air pressure resulted from compressed air; friction plates are disposed at the front and rear ends of the distribution valve respectively, and the front friction plate and the distribution valve friction plate each are made of hard alloy, thereby strengthening sealing, preventing quick wear caused by the swing of the distribution valve, and prolonging the service life of equipment; the rubber spring is disposed between the distribution valve friction plate and the distribution valve to ensure the distribution valve friction plate and the rear friction plate are in close contact, thus strengthening sealing; the swing arm is mounted through the spline in cooperation with the mandrel, and the mandrel is mounted through the mandrel cover in cooperation with the fitting slot at the upper part of the distribution valve to enable the mandrel to swing effectively along with the swing arm.
-
FIG. 1 is a schematic diagram illustrating an overall structure of a pulsation-free wet spraying machine according to an example of the present disclosure. -
FIG. 2 is a schematic diagram illustrating mounting structures of a pumping mechanism and a swing mechanism according to an example of the present disclosure. -
FIG. 3 is a schematic diagram illustrating partial structures of a pumping mechanism and a swing mechanism according to an example of the present disclosure. -
FIG. 4 is a sectional schematic diagram illustrating structures of a pumping mechanism and a swing mechanism according to an example of the present disclosure. -
FIG. 5 is a schematic diagram illustrating a swing mechanism according to an example of the present disclosure. -
FIG. 6 is a mounting schematic diagram illustrating a distribution valve according to an example of the present disclosure. -
FIG. 7 is a schematic diagram illustrating a swing structure of a distribution valve according to an example of the present disclosure. -
FIG. 8 is a structural schematic diagram illustrating a rear friction plate of a distribution valve according to an example of the present disclosure. -
FIG. 9 is a structural schematic diagram illustrating a distribution valve friction plate according to an example of the present disclosure. -
FIG. 10 is a structural schematic diagram illustrating a front friction plate of a distribution valve according to an example of the present disclosure. -
FIG. 11 is a structural schematic diagram illustrating a discharge pipe according to an example of the present disclosure. - Numerals of the drawings are described as follows: 1—frame, 2—pumping mechanism, 3—swing mechanism, 4—hydraulic system, 21—hopper, 22—material chamber, 222—front friction plate, 223—rear friction plate, 224—distribution valve friction plate, 225—rubber spring, 226—sealing ring, 23—concrete feeding mechanism, 231—concrete piston, 232—piston rod, 233—concrete cylinder, 234—main hydraulic cylinder, 24—auxiliary feeding mechanism, 241—auxiliary concrete piston, 242—auxiliary piston rod, 243—auxiliary concrete cylinder, 244—auxiliary hydraulic cylinder, 25—discharge pipe, 251—air hole, 252—auxiliary discharge pipe, 253—main discharge pipe, 26—distribution valve, 27—water rinsing bath, 271—pulling rod, 31—swing hydraulic cylinder, 32—swing arm, 33—swing hydraulic cylinder base, 34—mandrel, and 35—mandrel cover.
- As shown in
FIGS. 1-11 , a specific implementation of a pulsation-free wet spraying machine according to the present disclosure is described below. - Specifically, the pulsation-free wet spraying machine includes a
frame 1, apumping mechanism 2, aswing mechanism 3 and ahydraulic system 4. Wheels are disposed on theframe 1 to facilitate movement of the wet spraying machine; thehydraulic system 4 includes a hydraulic oil tank and a motor, the hydraulic oil tank is disposed at an upper part of the frame, the motor and the hydraulic oil tank drive hydraulic cylinders of theswing mechanism 3 and thepumping mechanism 2 to work, and thus, the structure outputs stable power safely and reliably; theswing mechanism 3 and thepumping mechanism 2 are mounted cooperatively, a concrete feeding mechanism of thepumping mechanism 2 is disposed at the bottom of the frame, and ahopper 21 of thepumping mechanism 2 is disposed at an upper front part of the frame. In this case, thepumping mechanism 2 realizes material pumping, and theswing mechanism 3 brings amandrel 34 and adistribution valve 26 to swing through aswing arm 32. - The
pumping mechanism 2 includes ahopper 21, amaterial chamber 22, aconcrete feeding mechanism 23, anauxiliary feeding mechanism 24, adistribution valve 26, awater rinsing bath 27 and adischarge pipe 25. A lower end of thehopper 21 is connected with thematerial chamber 22. Theconcrete feeding mechanism 23 includes two mainhydraulic cylinders 234, twoconcrete pistons 231 and twoconcrete cylinders 233, theauxiliary feeding mechanism 24 includes an auxiliaryhydraulic cylinder 244, anauxiliary concrete piston 241 and anauxiliary concrete cylinder 243, and theconcrete cylinder 233 of theconcrete feeding mechanism 23 is in communication with thematerial chamber 22. Thewater rinsing bath 27 and thematerial chamber 22 are arranged in parallel, a pulling rod 271 is disposed between thewater rinsing bath 27 and thematerial chamber 22, and three through-holes are disposed on thewater rinsing bath 27 to facilitate mounting. Thedistribution valve 26 is disposed inside thematerial chamber 22 and in communication with theconcrete cylinder 233 of the concrete feeding mechanism and thedischarge pipe 25. Theconcrete piston 231 is disposed at an end of apiston rod 232 of theconcrete feeding mechanism 23 and moves inside theconcrete cylinder 233; theauxiliary concrete piston 241 is disposed at an end of anauxiliary piston rod 242 of theauxiliary feeding mechanism 24 and moves inside theauxiliary concrete cylinder 243. Theconcrete feeding mechanism 23 pumps a material through operation of two mainhydraulic cylinders 234 in cooperation with the disposedauxiliary feeding mechanism 24, thereby solving the pumping pulsation problem caused by caused by the swing of thedistribution valve 26 in a pumping process of theconcrete feeding mechanism 23. Thehopper 21 is mounted above thematerial chamber 22, twoconcrete cylinders 233 of theconcrete feeding mechanism 23 are symmetrically arranged at a side surface of thematerial chamber 22, thewater rinsing bath 27 is mounted at a rear side of theconcrete feeding mechanism 23, and theauxiliary feeding mechanism 24 is mounted above theconcrete feeding mechanism 23. Adistribution valve 26, afront friction plate 222, arear friction plate 223, a distributionvalve friction plate 224, arubber spring 225 and asealing ring 226 are disposed within thematerial chamber 22, thefront friction plate 222 is disposed at a front end of thedistribution valve 26, and the distributionvalve friction plate 224 is disposed at a rear end of thedistribution valve 26, where the front end of the distribution valve is an end connecting thedistribution valve 26 with thedischarge pipe 25, and the rear end of the distribution valve is an end connecting thedistribution valve 26 with theconcrete cylinder 233. Therubber spring 225 is disposed between the distributionvalve friction plate 224 and thedistribution valve 26 to enable the distribution valve friction plate and the rear friction plate to be in close contact, thereby strengthening sealing. Further, a through-hole having a circular hole diameter slightly larger than or equal to theconcrete cylinder 233 is disposed on the distributionvalve friction plate 224, and baffle plates are disposed at both wings of the through-hole; when the through-hole of the distributionvalve friction plate 224 is rotated to be between twoconcrete cylinders 233, the baffle plates at the both wings block outlets of theconcrete cylinders 233. Thesealing ring 226 is disposed between thedistribution valve 26 and thefront friction plate 222 to seal up a pumping space. Thedischarge pipe 25 is disposed on thematerial chamber 22 and is a three-way pipe including anauxiliary discharge pipe 252 and amain discharge pipe 253, theauxiliary discharge pipe 253 is connected with theauxiliary concrete cylinder 243 on which anair hole 251 is disposed, and theauxiliary piston rod 242 passes through themandrel 34 to push theauxiliary concrete piston 241 to move inside theauxiliary concrete cylinder 243. Therefore, the problem that theauxiliary concrete piston 241 cannot retract due to the excessive air pressure is avoided. - The
swing mechanism 3 includes a swinghydraulic cylinder 31, aswing arm 32, amandrel 34 and a swinghydraulic cylinder base 33. The swinghydraulic cylinder base 33 is mounted at an outer side of thematerial chamber 22, the swinghydraulic cylinders 31 are symmetrically arranged at both sides of the swing hydraulic cylinder base, and theswing arm 32 is hinged with the swinghydraulic cylinders 31 and thewing arm 32 is mounted through a spline in cooperation with themandrel 34. The swinghydraulic cylinder base 33 is in a trapezoidal shape, theswing arm 32 is mounted at a short-side position of the hydraulic cylinder base, and two swinghydraulic cylinders 31 are arranged at two inclined sides of the swinghydraulic cylinder base 33 respectively. During work, when one of the two swinghydraulic cylinders 31 extends, the other retracts. The work is repeated in such a way that themandrel 34 is driven to swing so as to drive thedistribution valve 26 to swing. Themandrel 34 is square in the middle and circular at both ends, themandrel 34 is mounted through amandrel cover 35 in cooperation with a fitting slot at the upper part of thedistribution valve 26, and themandrel cover 35 is fixed with nuts. Thedistribution valve 26 swings along with themandrel 34, and theauxiliary piston rod 242 of theauxiliary feeding mechanism 24 passes through themandrel 34. Thehydraulic system 4 includes a hydraulic oil tank and a motor, and thepumping mechanism 2, theswing mechanism 3 and thehydraulic system 4 are all disposed on theframe 1. - The above pulsation-free wet spraying machine specifically works in the following process: firstly, material is poured into the
hopper 21 and then flows into thematerial chamber 22 through thehopper 21, where theconcrete piston 231 inside theconcrete cylinder 233 of oneconcrete feeding mechanism 23 retracts to enable theconcrete cylinder 233 to suck the material from thematerial chamber 22, and the otherconcrete feeding mechanism 23 pressurizes and pushes the material in theconcrete cylinder 233 through theconcrete piston 231, so that the material reaches thedischarge pipe 25 through thedistribution valve 26; thedistribution valve 26 swings along with themandrel 34, theconcrete piston 231 of theconcrete feeding mechanism 23 completing pumping retracts at this time to enable thecorresponding concrete cylinder 233 to suck material from thematerial chamber 22, and theconcrete piston 231 of the concrete feeding mechanism completing material sucking pushes the previously sucked material. In this way, the concrete feeding mechanism repeats the above work. In this process, when any one concrete feeding mechanism pumps the material, theauxiliary concrete piston 241 in theauxiliary concrete cylinder 243 connected with thedischarge pipe 25 retracts to enable theauxiliary concrete cylinder 243 to suck the material from theauxiliary discharge pipe 253; when thedistribution valve 26 swings, theauxiliary piston rod 242 of theauxiliary feeding mechanism 24 pushes theauxiliary concrete piston 241 to complete feeding. Further, as shown inFIG. 7 , when theauxiliary feeding mechanism 24 pumps the material, the baffle plates at both wings of the distributionvalve friction plate 224 block the outlets of theconcrete cylinders 233 to ensure stable feeding. Therefore, the pumping pulsation phenomenon is avoided. - Of course, the above descriptions are not intended to limit the present disclosure, and the present disclosure also is not limited to the above examples. Variations, modifications, additions or substitutions made by persons skilled in the art within the substantive scope of the present disclosure shall also belong to the scope of protection of the present disclosure.
Claims (8)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810815013.2 | 2018-07-24 | ||
CN201810815013.2A CN109113762B (en) | 2018-07-24 | 2018-07-24 | A kind of no pulse wet-spraying machine |
PCT/CN2018/120043 WO2020019626A1 (en) | 2018-07-24 | 2018-12-10 | Pulse-free spraying machine |
Publications (1)
Publication Number | Publication Date |
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US20200355077A1 true US20200355077A1 (en) | 2020-11-12 |
Family
ID=64862431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US16/965,220 Abandoned US20200355077A1 (en) | 2018-07-24 | 2018-12-10 | Pulsation-free wet spraying machine |
Country Status (3)
Country | Link |
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US (1) | US20200355077A1 (en) |
CN (1) | CN109113762B (en) |
WO (1) | WO2020019626A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111823398A (en) * | 2020-07-02 | 2020-10-27 | 焦作市倍特矿业设备有限公司 | Mining concrete feeding, stirring and wet spraying machine and using method |
CN112593557A (en) * | 2020-12-02 | 2021-04-02 | 湖南煤矿机械有限公司 | Vehicle-mounted wet spraying machine convenient for discharging |
CN114382673A (en) * | 2021-12-31 | 2022-04-22 | 河南和远机械科技有限公司 | Hopper cavity prevention device of concrete wet spraying machine |
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DE1266130B (en) * | 1963-11-08 | 1968-04-11 | Eugene Lee Sherrod | Multi-cylinder piston pump for pumping concrete or the like. |
JPH0694793B2 (en) * | 1988-01-21 | 1994-11-24 | 佐藤工業株式会社 | Valve device for concrete pouring port in cast-in-place concrete lining method |
NL8902546A (en) * | 1989-10-13 | 1991-05-01 | Pieter Faber | CONCRETE PUMPING EQUIPMENT. |
DE4208754A1 (en) * | 1992-03-19 | 1993-09-23 | Schwing Gmbh F | DICKER PUMP WITH CONVEYOR CYLINDER, IN PARTICULAR TWO-CYLINDER CONCRETE PUMP |
JP4668667B2 (en) * | 2005-04-14 | 2011-04-13 | 三菱重工メカトロシステムズ株式会社 | Concrete placing apparatus and tunnel excavator equipped with the apparatus |
CN201363338Y (en) * | 2009-03-24 | 2009-12-16 | 河南省煤炭科学研究院有限公司 | Hydraulic cylinder active volume compensating mechanism and concrete wet-sprayer with compensating piston |
CN201431939Y (en) * | 2009-07-08 | 2010-03-31 | 郑州知信机电科技开发有限公司 | Pumping wet spraying machine |
CN101787973B (en) * | 2010-02-09 | 2011-11-09 | 三一重工股份有限公司 | Distributing valve for concrete pump, concrete pump, control method thereof and concrete pump truck |
CN202023797U (en) * | 2011-05-06 | 2011-11-02 | 三一重工股份有限公司 | Pumping mechanism and pulse vibration absorption device thereof, and concrete pumping machine |
CN102862232B (en) * | 2012-08-28 | 2014-08-13 | 山西晋煤集团金鼎煤机矿业有限责任公司 | Movable wet shotcrete mixing station |
CN203463243U (en) * | 2013-08-14 | 2014-03-05 | 山东鲁科自动化技术有限公司 | Full-hydraulic concrete pump |
CN104153988B (en) * | 2014-08-05 | 2016-08-31 | 三一汽车制造有限公司 | Distributing valve, pumping mechanism and concrete pump |
-
2018
- 2018-07-24 CN CN201810815013.2A patent/CN109113762B/en active Active
- 2018-12-10 WO PCT/CN2018/120043 patent/WO2020019626A1/en active Application Filing
- 2018-12-10 US US16/965,220 patent/US20200355077A1/en not_active Abandoned
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111823398A (en) * | 2020-07-02 | 2020-10-27 | 焦作市倍特矿业设备有限公司 | Mining concrete feeding, stirring and wet spraying machine and using method |
CN112593557A (en) * | 2020-12-02 | 2021-04-02 | 湖南煤矿机械有限公司 | Vehicle-mounted wet spraying machine convenient for discharging |
CN114382673A (en) * | 2021-12-31 | 2022-04-22 | 河南和远机械科技有限公司 | Hopper cavity prevention device of concrete wet spraying machine |
Also Published As
Publication number | Publication date |
---|---|
CN109113762A (en) | 2019-01-01 |
CN109113762B (en) | 2019-09-24 |
WO2020019626A1 (en) | 2020-01-30 |
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