CN210621402U - Double-nozzle asphalt spraying valve - Google Patents

Double-nozzle asphalt spraying valve Download PDF

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Publication number
CN210621402U
CN210621402U CN201920105484.4U CN201920105484U CN210621402U CN 210621402 U CN210621402 U CN 210621402U CN 201920105484 U CN201920105484 U CN 201920105484U CN 210621402 U CN210621402 U CN 210621402U
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CN
China
Prior art keywords
nozzle
valve seat
valve
hole
cylinder barrel
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Active
Application number
CN201920105484.4U
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Chinese (zh)
Inventor
吴鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHEJIANG MEITONG ROAD CONSTRUCTION MACHINERY CO Ltd
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ZHEJIANG MEITONG ROAD CONSTRUCTION MACHINERY CO Ltd
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Priority to CN201920105484.4U priority Critical patent/CN210621402U/en
Application granted granted Critical
Publication of CN210621402U publication Critical patent/CN210621402U/en
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Abstract

A double-nozzle asphalt spraying valve comprises a cylinder barrel, a piston, an end cover, a cylinder rod, a spring, a valve seat, a first nozzle and a second nozzle; the cylinder barrel is a circular barrel with the upper end closed and the lower end opened, the upper end and the lower end of the cylinder barrel are respectively provided with an upper air inlet hole and a lower air inlet hole, a piston in sliding fit with the cylinder barrel is concentrically arranged in the cylinder barrel, the end cover is connected to the lower end of the cylinder barrel, the cylinder rod penetrates through the end cover and is connected to the lower end of the piston, the lower part of the cylinder rod is additionally provided with two sealing rings, and the upper end and the lower end of the piston are respectively provided; the valve seat is connected to the lower part of the end cover and is respectively provided with the first nozzle and the second nozzle; the nozzle has the characteristics of no need of replacing the nozzle according to the spraying amount, reasonable structure, convenient use and the like.

Description

Double-nozzle asphalt spraying valve
Technical Field
The invention relates to the field of liquid working medium spraying, in particular to a double-nozzle asphalt spraying valve.
Background
One of the main functions of the asphalt spreading vehicle, the synchronous chip seal vehicle, the fiber seal vehicle and the comprehensive pavement maintenance vehicle of the asphalt pavement construction and maintenance equipment is to spread asphalt adhesive layers, and in actual construction, the spreading amount of asphalt is 0.5-3.0kg/m according to the different design requirements of the construction process2Variation within rangeFor example: when the fog sealing construction is carried out, a small spraying amount (less than 1.0 kg/m) is required2) The asphalt is sprayed, and when the chip seal or the fiber seal is constructed, a larger asphalt spraying amount (more than 1.5 kg/m) is required2) The asphalt is spread. The vehicle adopts two sets of nozzles arranged along the vehicle, one set is a large-diameter nozzle, the other set is a small-diameter nozzle, and the nozzles with different diameters are replaced according to the required spreading amount during construction, and because the vehicle generally has 24-36 nozzles, the whole replacement is time-consuming and labor-consuming during construction, and the use is inconvenient.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the double-nozzle asphalt spraying valve which is not required to be changed and installed with nozzles according to the spraying amount, has a reasonable structure and is convenient to use.
The invention aims to complete the technical scheme that the double-nozzle asphalt spraying valve comprises a cylinder barrel, a piston, an end cover, a cylinder rod, a spring, a valve seat, a first nozzle and a second nozzle; the cylinder barrel is a circular barrel with the upper end closed and the lower end opened, the upper end and the lower end of the cylinder barrel are respectively provided with an upper air inlet hole and a lower air inlet hole, a piston in sliding fit with the cylinder barrel is concentrically arranged in the cylinder barrel, the end cover is connected to the lower end of the cylinder barrel, the cylinder rod penetrates through the end cover and is connected to the lower end of the piston, the lower part of the cylinder rod is additionally provided with two sealing rings, and the upper end and the lower end of the piston are respectively provided; the valve seat is connected to the lower part of the end cover and is respectively provided with the first nozzle and the second nozzle.
Preferably, the method comprises the following steps: a valve hole in sliding fit with the sealing ring of the cylinder rod is machined in the center of the valve seat, an upper oil outlet ring is machined at the upper end of the valve seat and in a concentric mode with the valve hole, and a first nozzle mounting hole communicated with the upper oil outlet ring is additionally arranged at the lower end of the valve seat; a lower oil outlet ring is concentrically processed at the lower end of the valve seat and the valve hole, and a second nozzle mounting hole communicated with the lower oil outlet ring is additionally arranged at the lower end of the valve seat; and an oil inlet hole communicated with the valve hole is formed in the side face of the valve seat.
Preferably, the method comprises the following steps: the plug is arranged at the lower end of the valve seat, and the plug and the valve hole are assembled in a concentric mode; a first nozzle is connected to a first nozzle mounting hole of the valve seat, and a second nozzle is connected to a second nozzle mounting hole of the valve seat; the first nozzle and the second nozzle are fan-shaped nozzles with different drift diameters.
According to the invention, switching and spreading of the large nozzle and the small nozzle can be realized through switching of the first nozzle and the second nozzle, the manual replacement of the nozzles like the traditional equipment is not needed, asphalt spreading operation with different spreading amounts can be better carried out, and the device is practical and efficient; the nozzle has the characteristics of no need of replacing the nozzle according to the spraying amount, reasonable structure, convenient use and the like.
Drawings
FIG. 1 is a front view of a cylinder of a dual nozzle asphalt spray valve of the present invention when compressed air is not introduced.
FIG. 2 is a front view of the valve seat of the dual nozzle asphalt spray valve of the present invention.
Fig. 3 is a schematic view of the cylinder barrel according to the present invention when compressed air is introduced into the upper air inlet.
Fig. 4 is a schematic view of the lower air inlet of the cylinder barrel of the present invention when compressed air is introduced.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1-3, in order to solve the above technical problems, the present invention provides a dual-nozzle asphalt spraying valve, which comprises a cylinder barrel 1, a piston 2, an end cover 3, a cylinder rod 4, a spring 5, a valve seat 6, a first nozzle 8 and a second nozzle 9; the cylinder barrel 1 is a circular barrel with a closed upper end and an opened lower end, an upper air inlet hole 1a and a lower air inlet hole 1b are respectively arranged at the upper end and the lower end of the cylinder barrel 1, a piston 2 in sliding fit with the cylinder barrel 1 is concentrically arranged in the cylinder barrel 1, the end cover 3 is connected to the lower end of the cylinder barrel 1, the cylinder rod 4 penetrates through the end cover 3 and is connected to the lower end of the piston 2, two sealing rings 4a are additionally arranged at the lower part of the cylinder rod 4, and springs 5 are respectively arranged at the upper end and the lower end of; the valve seat 6 is connected to the lower part of the end cover 3, and is respectively provided with the first nozzle 8 and the second nozzle 9.
As shown in the figure, a valve hole 6a in sliding fit with the sealing ring 4a of the cylinder rod 4 is machined in the center of the valve seat 6, an upper oil outlet ring 6b is machined at the upper end of the valve seat 6 concentrically with the valve hole, and a first nozzle mounting hole 6c communicated with the upper oil outlet ring 6b is additionally arranged at the lower end of the valve seat 6; a lower oil outlet ring 6d is concentrically processed at the lower end of the valve seat 6 and the valve hole, and a second nozzle mounting hole 6e communicated with the lower oil outlet ring 6d is additionally arranged at the lower end of the valve seat 6; and an oil inlet hole 6f communicated with the valve hole 6a is formed in the side surface of the valve seat 6.
The plug 7 is arranged at the lower end of the valve seat 6, and the plug 7 and the valve hole are assembled concentrically; a first nozzle 8 is connected to a first nozzle mounting hole 6c of the valve seat 6, and a second nozzle 9 is connected to a second nozzle mounting hole 6e of the valve seat 6; the first nozzle 8 and the second nozzle 9 are fan-shaped nozzles with different diameters.
The working principle of the invention is as follows:
when the upper air inlet hole 1a and the lower air inlet hole 1b of the cylinder barrel 1 are not communicated with compressed air, the piston 2 is in a balance position under the action of the springs 5 respectively arranged above and below the piston, at the moment, the two sealing rings 4a of the cylinder rod 4 are respectively positioned at two sides of the oil inlet hole 6f on the side surface of the valve seat 6, so that asphalt cannot enter the upper oil outlet ring 6b and the lower oil outlet ring 6d from the oil inlet hole 6f, at the moment, neither the first nozzle 8 nor the second nozzle 9 has asphalt flowing in, and the sprinkling state is stopped.
When compressed air is introduced into the upper air inlet 1a of the cylinder barrel 1, the piston 2 moves downwards under the action of the compressed air, so that the cylinder rod 4 is driven to move downwards together until the two sealing rings 4a of the cylinder rod 4 are positioned below the oil inlet 6f on the side surface of the valve seat 6, and at the moment, asphalt can enter the valve hole 6a of the valve seat 6 through the oil inlet 6f, enter the upper oil outlet ring 6b through the valve hole 6a, further enter the first nozzle mounting hole 6c, and finally be sprayed out of the first nozzle 8.
When compressed air is introduced into the lower air inlet 1b of the cylinder barrel 1, the piston 2 moves upwards under the action of the compressed air, so that the cylinder rod 4 is driven to move upwards together until two sealing rings 4a of the cylinder rod 4 are positioned above an oil inlet 6f on the side surface of the valve seat 6, and at the moment, asphalt can enter the valve hole 6a of the valve seat 6 through the oil inlet 6f, enter the lower oil outlet ring 6d through the valve hole 6a, further enter the second nozzle mounting hole 6e, and finally is sprayed out from the second nozzle 9.
The above disclosure is only for the preferred embodiments of the present invention, but the present invention is not limited thereto, and any non-inventive changes that can be made by those skilled in the art and any modifications and amendments made without departing from the principle of the present invention shall fall within the protection scope of the present invention.

Claims (3)

1. A double-nozzle asphalt spraying valve comprises a cylinder barrel (1), a piston (2), an end cover (3), a cylinder rod (4), a spring (5), a valve seat (6), a first nozzle (8) and a second nozzle (9); the method is characterized in that: the cylinder barrel (1) is a circular barrel with a closed upper end and an opened lower end, an upper air inlet hole (1 a) and a lower air inlet hole (1 b) are respectively formed in the upper end and the lower end of the cylinder barrel (1), a piston (2) in sliding fit with the cylinder barrel is concentrically arranged in the cylinder barrel (1), the end cover (3) is connected to the lower end of the cylinder barrel (1), the cylinder rod (4) penetrates through the end cover (3) and is connected to the lower end of the piston (2), two sealing rings (4 a) are additionally arranged on the lower portion of the cylinder rod (4), and springs (5) are respectively arranged at the upper end and the lower end of the piston (2; the valve seat (6) is connected to the lower part of the end cover (3) and is respectively provided with the first nozzle (8) and the second nozzle (9).
2. The dual nozzle asphalt spray valve of claim 1, wherein: a valve hole (6 a) in sliding fit with the sealing ring (4 a) of the cylinder rod (4) is machined in the center of the valve seat (6), an upper oil outlet ring (6 b) is machined at the upper end of the valve seat (6) and in a concentric mode with the valve hole, and a first nozzle mounting hole (6 c) communicated with the upper oil outlet ring (6 b) is additionally arranged at the lower end of the valve seat (6); a lower oil outlet ring (6 d) is concentrically processed at the lower end of the valve seat (6) and the valve hole, and a second nozzle mounting hole (6 e) communicated with the lower oil outlet ring (6 d) is additionally arranged at the lower end of the valve seat (6); and an oil inlet hole (6 f) communicated with the valve hole (6 a) is formed in the side surface of the valve seat (6).
3. The dual nozzle asphalt spray valve of claim 2, wherein: a plug (7) is arranged at the lower end of the valve seat (6), and the plug (7) and the valve hole are assembled in a concentric mode; a first nozzle (8) is connected to a first nozzle mounting hole (6 c) of the valve seat (6), and a second nozzle (9) is connected to a second nozzle mounting hole (6 e) of the valve seat (6); the first nozzle (8) and the second nozzle (9) are fan-shaped nozzles with different drift diameters.
CN201920105484.4U 2019-01-22 2019-01-22 Double-nozzle asphalt spraying valve Active CN210621402U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920105484.4U CN210621402U (en) 2019-01-22 2019-01-22 Double-nozzle asphalt spraying valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920105484.4U CN210621402U (en) 2019-01-22 2019-01-22 Double-nozzle asphalt spraying valve

Publications (1)

Publication Number Publication Date
CN210621402U true CN210621402U (en) 2020-05-26

Family

ID=70760319

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920105484.4U Active CN210621402U (en) 2019-01-22 2019-01-22 Double-nozzle asphalt spraying valve

Country Status (1)

Country Link
CN (1) CN210621402U (en)

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