KR100817889B1 - Jet type working apparatus and method for marking road - Google Patents

Abstract

A low pressure spray type road surface marking apparatus is provided to remove the danger of explosion due to high pressure by conveying a high temperature and high viscosity composite from a high temperature melting device to a sprayer under low pressure, and to supply a composite at a fixed quantity continuously and stably without abrasion and damage of equipment caused by friction even if a strong composite such as glass beads for a road. A low pressure spray type road surface marking apparatus includes a melting device(1) storing a high temperature and high viscosity composite, a sprayer(2) receiving the high temperature and high viscosity composite from the melting device and spraying, and a supply device(3) pumping out the composite of the melting device and supplying to the sprayer between the sprayer and the melting device, wherein the sprayer is connected with an air compressor(4) to spray the melted composite to a road surface through a spray nozzle with compressed air supplied from the air compressor. The supply device is composed of a pair of actuating pumps(30A,30B) pumping in opposite directions with a piston operated by hydraulic pressure and having a pair of cylinders(31A,31B) with built-in pistons(32A,32B) operating in the opposite directions and a pair of pump housings(33A,33B) with corrugated boxes(34A,34B), wherein suction valves(38A,38B) are installed to inlets(331A,331B) of the pump housings and discharge valves(39A,39B) are installed to outlets(332A,332B) of the pump housings to close an inlet and an outlet of the other actuating pump repeatedly to make continuous pumping actions when the composite of the melting device is inhaled or discharged through an inlet and an outlet of one actuating pump.

Description

Jet type working apparatus and method for marking road

The present invention relates to a spraying road marking construction method and apparatus, and more particularly, to remove the risk of explosion due to high pressure in advance by allowing the high-temperature high viscosity composition stored in the hot melt tank to be transported to the injector side by low pressure. In addition, the present invention relates to a low pressure spraying road marking construction method and apparatus for stably and continuously supplying a quantitative composition without abrasion and damage of the device due to friction even when transporting a composition mixed with a strong material such as road glass.

In general, the construction of the road marking to implement three-dimensional surface treatment and to enhance visibility in the rainy weather at night due to the protrusion effect is the first injector and aggregate sprayer and the second injector from the front side to the painting vehicle, as shown in FIG. Next, the glass sprayer is installed in order to form the first paint layer 110 on the road surface by using the first injector, and then aggregates are formed of glass and crushed particles on the first paint layer 110 using an aggregate sprayer. (120), and then a second paint layer (130) is formed on the aggregate (120) by means of a second injector, and then a road glass (on the second paint layer (130) by a glass sprayer) 140) will be sprayed and installed.

However, since the spraying of aggregates and glass grains is applied after the spraying of the conventional road marking, the visibility is greatly reduced due to the water film phenomenon during the rainy weather, as well as causing slippage of the vehicle during rainy weather due to the detachment of glass grains for road after construction. The road sign was lost due to the reflection of road headlights from the opposite direction, and there was a problem of causing economic deterioration due to frequent reconstruction.

On the other hand, the spraying road surface factory factory is a dissolution tank for dissolving the raw material introduced by heating into a high viscosity thermoplastic composition of 200 ° C. or higher, an injector for spraying a high temperature composition dissolved from the dissolution tank on the road surface, and a dissolution tank toward the injector side. And a feeder for supplying the high temperature, high viscosity composition stored therein.

In general, the supply device is a pressure-resistant type, gear pump type, screw pump type, airless pump type, etc. are mainly used, the pressure-resistant type is to close the melting tank and increase the internal pressure of the melting tank by using the air pressure by the pressure It is a method of conveying a high temperature, high viscosity composition in a dissolution tank.

However, such a pressure-resistant feeder is designed to convey the composition by raising the internal pressure to a high pressure by sealing the dissolution tank heated so that the composition in the dissolution tank can always maintain an appropriate construction temperature of 200 ~ 300 ℃. Not only can the tank easily be cracked and damaged by an external impact, but also there is a problem that the risk of large explosion accidents must always be taken.

In addition, since the pressure applied to the dissolution tank varies according to the amount of the composition remaining in the dissolution tank, the operator has to adjust the pressure in comparison with the remaining amount in the dissolution tank. And there was a problem causing inconvenience.

The gear pump type is a pressure generated by the high-speed rotation of the gears 150 and 150A meshed with each other as shown in FIG. 5 to supply a high-temperature, high-viscosity thermoplastic composition inside the dissolution tank to the injector. Mainly used.

However, such a gear pump type feeder may be used when the composition does not include road glass grains, but when road glass grains are included in the composition, the road glass grains pass through the interior of the gears 150 and 150A. When the gears (150) (150A) is crimped by the engagement of the broken because it does not properly exhibit the function there was a problem that causes the quality of the construction.

In addition, the gear 150, 150A and the gear housing (150B) is a premature wear due to repeated friction with the glass ball for the road is not able to properly exhibit its function to prevent the stable quantitative supply of the composition There was this.

Screw pump type as shown in Figure 6 has been used mainly in terms of being able to supplement the disadvantages of the gear pump type is a way to push the composition by the rotation of the screw 160.

However, this also has a problem in that the supply pressure is weak because the inside of the cylinder and the outside of the screw 160 is not in close contact with each other, and thus a separate air pressure must be applied to the inside of the dissolution tank to compensate for the transport of the composition.

The airless pump method is mainly used for road marking construction of a paint composition, which is also effective for transferring and supplying the composition at high pressure, but due to the direct friction between the piston and the cylinder and the glass balls and abrasion-resistant materials mixed in the composition, There is a problem that causes premature damage.

In addition, since the airless pump method transfers the composition by high pressure, there is a possibility that a high temperature composition may leak at the connection part, and a supplementary device for preventing leakage is necessary. In case of leakage, a problem of causing a large safety accident is caused. there was.

On the other hand, the composition supplied to the injector side from the dissolution tank by the supply device is to inject the composition on the road surface through the injection jet nozzle by the compressed air supplied to the injector from the air compressor, the composition due to the temperature difference between the composition and the compressed air There was a problem that the quality of the construction is lowered by the instantaneous temperature drop before the road surface adhesion.

As shown in FIG. 7, the injector nozzle 20 of the injector is typically formed with a pair of straight injection contact surfaces 22a and 22b spaced apart at the front side of the circular injector 21. The injector nozzle of this injector is used for spraying paint which is a general road marking paint. However, since the compressed air is discharged through the circular inlet 21 just before reaching the injector nozzle, the pressure at this time is concentrated to the center of the injector nozzle 20. As a result, the composition is driven to the center to produce a gradient phenomenon. There was a problem that the shape of the entire linear becomes unstable.

As such, the conventional factory display of sprayed road surface is a problem caused by the supply device, that is, in the case of the pressure-resistant feeder, it is possible to mix the composition of the road glass for the purpose of the road reflection, so that spraying of the road glass after the construction is unnecessary. The high temperature dissolving device is sealed to transfer the composition at high pressure, so there is a problem with large explosion risk. The gear pump type, the screw pump type, and the airless pump type feeding device have a problem of premature operation of the device due to the friction of the glass beads on the road. It is not possible to supply a stable quantitative composition due to the trouble of causing damage or supplementary pressure, and also loses the reflection function of the road surface because the glass beads for roads are separated from the constructed composition by spraying road glass balls after construction. There was a problem.

Accordingly, the present invention has been made to solve the conventional problems as described above, the purpose is to allow the high-temperature high viscosity composition stored inside the hot melt tank by low pressure to be transferred to the injector side of the explosion due to high pressure The risk is to be removed in advance, and even if transporting a composition mixed with a strong material such as a glass ball for road to provide a stable and continuous supply of the composition of the quantitatively without abrasion and damage of the device due to friction.

It is also an object of the present invention to prevent the high temperature, high viscosity composition supplied by the feeder from the dissolution apparatus to the injector side from being instantaneously cooled in the injector by compressed air providing an injection pressure to the composition.

In addition, an object of the present invention is to prevent the non-uniformity of the coating caused by the gradient caused by the composition is injected to the road surface through the injector nozzle of the injector is concentrated in the center of the injector nozzle.

In order to achieve the object of the present invention in the injection type road surface marking method for supplying a high temperature high viscosity composition stored in the dissolving device to the sprayer to spray the composition of the dissolving device on the road surface by the pressure of the compressed air through the injector, The composition stored in the dissolving device is provided with a pair of pumps having a corrugation box that repeats contraction and expansion by external power to operate in opposite directions, so that the inlet pressure by the contraction of the corrugation box and the discharge pressure by expansion are provided. There is provided a low-pressure injection road marking construction method characterized in that to continuously supply a fixed quantity to the injector at low pressure.

In addition, the compressed air supplied to the injector is characterized in that the heated high-temperature compressed air.

In addition, the composition sprayed on the road surface through the injector is characterized in that the uniform coating can be made by the dispersion of compressed air.

In addition, the high-temperature high viscosity composition stored in the dissolution device is supplied to the injector by using a supply device, the injector receives compressed air from the air compressor to inject the composition supplied to the injector to the road surface through the injector nozzle In the sprayed road marking construction apparatus, the supply device is a corrugated box A, B, which is built in the pump housings A, B, respectively, and piston rods A, B, which are embedded in the cylinders A, B, respectively, in the pump housings A, B, respectively. Low pressure spraying road marking construction consisting of a pair of working pumps A and B for sucking or supplying the composition of the dissolving device to the injector with suction and discharge pressure by pistons A and B, which are connected to each other by B and operate in opposite directions. An apparatus is provided.

In addition, the pump housings A and B are formed with inlets A and B connected to the dissolution apparatus through suction pipes and inlet pipes A and B, and outlets A and B connected to the injector through discharge pipes A and B and supply pipes. The inlets A, B and outlets A, B further include suction valves A, B opened by suction pressure, and discharge valves A, B opened by discharge pressure, respectively.

In addition, the compressed air supplied to the injector side from the air compressor is characterized in that configured to be supplied to the injector in a high temperature state by a heating device.

In addition, the heating device is provided with a heating cylinder through which the injection pipe connecting between the air compressor and the injector, the heating cylinder includes a high-pressure burner in the center of one end, the inside of the heating cylinder in the form of a coil coil It is characterized in that the heating portion formed with a.

In addition, the injector nozzle is formed in a single parallel injection port in the center of the injector nozzle at the center of the injector nozzle and the other injection contact surface of the trapezoidal shape formed to be inclined from the center to the rear side of the linear injection port in the front side. It is done.

As described above, the present invention enables the supply of the composition of the dissolution apparatus to the injector at low pressure by a pair of working pumps having a corrugated box contracted and expanded by a piston, so that there is no risk of explosion due to high pressure. Even when transporting a composition mixed with a strong material such as glass grains, it is possible to stably and continuously supply a composition of quantitatively without abrasion and damage of the device due to friction. It will have the effect of securing efficiency and economics.

In addition, the present invention by heating the compressed air supplied from the air compressor to the injector to be injected into the injector at a high temperature state, the construction defects and qualitative according to the instant cooling of the composition previously supplied to the injector by the compressed air It also has the effect of preventing the degradation in advance.

In addition, the present invention is a pair of injection contact surface provided in parallel with each other at intervals in the middle portion of the injector nozzle, one side is formed in a straight shape and the other side is formed in a trapezoidal shape inclined from the center to the rear side due to the dispersion of compressed air The uniform application of the composition is also made, there is also an advantage that can provide a higher quality road marking construction without a linear defect due to the gradient phenomenon.

Hereinafter, the road surface construction method according to the present invention will be described in detail.

In the present invention, the key is to supply a high temperature, high viscosity composition stored in the dissolving device to the injector at a low pressure, not a high pressure state, and abrasion of the device due to friction of a composition mixed with a strong material such as road glass. It is to supply the injector safely in a quantitative manner without damage.

In order to solve this problem, the present invention uses a pair of pumps having a corrugation box that repeats contraction and expansion by external power, and supplies the high temperature high viscosity composition stored in the dissolving device to the injector at low pressure, and at the same time, the glass beads for the road. Even if strong materials are mixed, the characteristics of the wear and damage of the feeder does not occur due to friction.

In more detail, when the corrugation box of one pump contracts, the corrugation box of the other pump expands in such a manner that the pumps are operated in opposite directions so that the suction pressure and the discharge pressure due to expansion of the corrugation box are expanded. In order to be able to supply the composition stored in the dissolution apparatus to the injector continuously and repeatedly, will be described in detail in the configuration of the device to be described later.

On the other hand, the composition supplied to the injector is injected on the road surface by the compressed air injected into the injector, the composition of the injector is instantaneously cooled by the compressed air occurs, the present invention is compressed air injected into the injector Was supplied in a heated state at a high temperature to prevent the phenomenon of the instantaneous cooling of the composition as described above.

In addition, the nozzle of the injector is that the injection hole is formed in the center and the composition is injected in a centralized manner, causing a linear failure due to the gradient phenomenon, the present invention is to ensure that the compressed air injected with the composition is dispersed through the nozzle It is to be able to achieve a uniform application of the composition.

Hereinafter, a configuration of an apparatus of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic block diagram showing the overall configuration of the present invention.

As shown therein, the present invention includes a dissolving device 1 in which a high temperature and high viscosity composition is stored therein, and an injector 2 for receiving and injecting a high temperature and high viscosity composition from the dissolving device 1, wherein the injector is provided. Between (2) and the dissolution device (1) is provided with a supply device (3) for supplying the composition inside the dissolution device (1) to the injector (2) by the pumping operation, the injector (2) is an air compressor (4) ) And sprayed the composition dissolved on the road surface through the injector nozzle by the compressed air injected from the air compressor (4).

The supply device (3) is composed of a pair of operating pumps A, B (30A) 30B to perform a pumping function in the opposite direction by a piston operated by the supply of hydraulic pressure, the operation pump A, B (30A) 30B is provided with a pair of cylinders A, B (31A) and (31B) in which pistons A and B (32A) and (32B) which operate in opposite directions by supply of hydraulic pressure are incorporated. In addition to the cylinders A and B 31A and 31B, a pair of pump housings A and B 33A and 33B having corrugated boxes A and B 34A and 34B are provided inside the pump housings A and B. The inlets A, B 331A and 331B and the outlets A and B 332A and 332B are formed at one side and the other side of the B 33A and 33B, respectively.

In addition, the corrugated box A, B (34A) 34B is connected to the piston A, B (32A) 32B and the piston rod A, B (35A) 35B, the pump housing A, B (33A) ( Inlet A, B 331A, 331B of 33B is connected to the dissolution device 1 through inlet pipes A, B 36A, 36B branched from the suction pipe 333, and outlet A, B 332A. Reference numeral 332B is configured to be connected to the injector 2 through the discharge pipes A, B 37A, 37B and the supply pipe 334.

In addition, when the composition of the dissolution device is sucked or discharged through the inlet and outlet of one side of the working pump, the inlet and the outlet of the other side of the operating pump are repeatedly closed so that the continuous pumping operation can be performed. Inlet A, B (331A) and 331B of (33B) are respectively provided with suction valve A (38A) and suction valve B (38B) which operate opposite to each other, and outlet A, B (332A) and 332B are respectively provided. Discharge valves A and B 39A and 39B, which operate opposite to each other, are respectively provided.

At the same time, the inlet tube 40 between the air compressor 4 and the injector 2, which injects compressed air to the injector 2 side, is heated by the compressor 5 through the inlet tube 40 by the heating device 5. As configured so that, the heating device 5 is composed of a cylindrical heating cylinder 52 formed with a high-pressure burner 51 in the center of one end as shown in Figure 2, the injection tube inside the heating cylinder 52 The 40 is formed by the coil-shaped heating unit 53.

According to the present invention configured as described above, first, when the hydraulic pressure is supplied to the cylinder A 31A through the operation pump A 30A through the arrow A, the piston A 32A of the cylinder A 31A is raised. The piston rod A 35A connected to the corrugation box A 34A compresses the corrugation box A 34A.

Accordingly, the suction valve A 38A is opened, and the composition inside the dissolution device 1 flows into the pump housing A 33A through the suction pipe 333 and the inlet pipe A 36A, and discharge valve A 39A. ) Is closed by the suction pressure.

In addition, the working pump B (30B) together with the working pump A (30A) is supplied with hydraulic pressure into the cylinder B (31B) through the arrow D to lower the piston B (32B) inside the cylinder B (31B) Piston rod B 35B connected to corrugation box B 34B expands corrugation box B 34B.

Accordingly, the suction valve B 38B is closed and the discharge valve B 39B is opened so that the composition inside the pump housing B 33B supplies the composition to the injector 2 through the discharge pipe B 37B and the supply pipe 334. Spraying the composition on the road surface is to display.

On the contrary, when the piston A 32A of the operation pump A 30A is lowered by the supply of hydraulic pressure through the arrow B (), the suction valve A 38A is expanded by the expansion of the corrugation box A 34A. The discharge valve A 39A is opened to supply the composition inside the pump housing A 33A to the injector 2 through the discharge pipe A 37A and the supply pipe 334.

At the same time, the piston B 32B of the operation pump B 30B is raised by the hydraulic supply through the arrow C. As a result, the corrugation box B 34B is compressed to open the suction valve B 38B and discharge valve B ( 39B is closed so that the composition can be continuously supplied to the injector 2 by repeating the suction of the composition inside the dissolution apparatus 1 through the suction pipe 333 and the inflow pipe B 36B.

On the other hand, the compressed air supplied from the air compressor 4 to the injector 2 side, as shown in FIG. 2, the heating portion 53 of the injection pipe 40 passing through the inside of the heating cylinder 52 of the heating device 5. ) Is injected into the injector 2 at a high temperature by heating by the high-pressure burner 51, thereby preventing the composition from being instantaneously cooled by the compressed air in the injector 2, wherein The heating part 53 becomes a coil shape, and the contact time of heat becomes long.

Figure 3 is a bottom view showing an injector nozzle applied to the injector of the present invention.

As shown therein, the injector nozzle 20 of the present invention is formed with a pair of injection contact surfaces 22a and 22b spaced apart on the front side of the circular injection port 21, and the one side injection contact surface 22a in a straight line. And the other injection contact surface 23 is formed in a trapezoidal shape inclined from both sides to the rear of the central portion. When the injector nozzle 20 is constituted in this way, the flow of compressed air can be dispersed to both sides so that the composition does not have a gradient phenomenon. It has the advantage that it can be uniformly installed on the road surface.

If all of the spray contact surfaces 22a and 22b of the injector nozzle 20 are formed in a trapezoidal shape, the distribution of the composition is biased to both sides, resulting in linear defects due to the gradient phenomenon as in the prior art.

1 is a schematic block diagram showing the overall configuration of the present invention.

Figure 2 is an enlarged cross-sectional view showing a heating apparatus of the present invention.

Figure 3 is a bottom view of the injector nozzle of the present invention.

4 is a cross-sectional view showing a conventional jet road marking.

5 is a cross-sectional view showing a conventional gear pump feeder.

Figure 6 is a cross-sectional view showing a conventional screw pump type feeder.

7 is a bottom view showing a conventional injector nozzle.

* Explanation of symbols for main parts of the drawings

1: melting apparatus 2: spraying machine

3: feeder 4: air compressor

5: heating device 20: spray nozzle

23: Injection contact surface 30A, B: Operation pump A, B

31 A, B: Cylinder A, B 32 A, B: Piston A, B

33A, B: Pump housing A, B 34A, B: Pleat box A, B

35A, B: Piston rod A, B 36A, B: Inlet pipe A, B

37A, B: Outlet pipe A, B 38A, B: Suction valve A, B

39A, B: discharge valve A, B 40: injection pipe

51: high pressure burner 52: heating cylinder

53: Heating part 331A, B: Inlet A, B

332A, B: Outlet A, B 333: Suction tube

334: supply pipe

Claims (8)

In the injection type road surface marking method of supplying a high temperature high viscosity composition stored in the dissolving device to the sprayer to spray the composition of the dissolving device to the road surface by the pressure of the compressed air through the injector, The composition stored in the dissolving device is provided with a pair of pumps having a corrugation box that repeats contraction and expansion by external power to operate in opposite directions, so that the inlet pressure by the contraction of the corrugation box and the discharge pressure by expansion are provided. Low pressure injection road marking construction method characterized in that to continuously supply a fixed quantity to the injector at low pressure. The method of claim 1, The compressed air supplied to the injector is a low-pressure injection road marking construction method characterized in that the heated high-temperature compressed air. The method of claim 1, The composition sprayed on the road surface through the injector is a low pressure spray road surface construction method characterized in that the uniform coating can be made by the dispersion of compressed air. The high temperature and high viscosity composition stored in the dissolution device 1 is supplied to the injector 2 using the supply device 3, and the injector 2 receives the compressed air from the air compressor 4 and receives the injector ( In the spray-type road marking construction device is to spray the composition supplied to 2) to the road surface through the injector nozzle 20, The supply device 3 is a corrugated box A, B (34A) 34B, which is built in the pump housing A, B (33A) 33B, respectively, the cylinder A, the outside of the pump housing A, B (33A) 33B, Pistons A and B (32A) and 32B that operate opposite to each other by connecting pistons A and B (32A and 32B) built in B (31A and 31B) with piston rods A and B (35A and 35B), respectively. Low pressure spraying road marking construction comprising a pair of working pumps A, B (30A) and 30B for sucking or supplying the composition of the dissolving device 1 to the injector 2 with suction force and discharge pressure by . The method of claim 4, wherein The pump housings A and B 33A and 33B have inlets A and B 331A and 331B connected to the dissolution device 1 through the suction pipe 333 and the inlet pipes A and B 36A and 36B. And outlets A and B 332A and 332B which are connected to the injector 2 through discharge pipes A and B 37A and 37B and a supply pipe 334, and the inlets A and B 331A ( 331B and outlets A, B (332A) and 332B further include suction valves A and B (38A) 38B opened by suction pressure and discharge valves A and B (39A) 39B opened by discharge pressure, respectively. Low pressure spray road marking construction comprising a. The method of claim 4, wherein The compressed air supplied from the air compressor (4) to the injector (2) side is configured to be supplied to the injector (2) at a high temperature state by the heating device (5). The method of claim 6, The heating device 5 is provided with a heating cylinder 52 through which the injection pipe 40 connecting between the air compressor 4 and the injector 2, the heating cylinder 52 is in the center of one end A high pressure burner (51), and the inside of the heating cylinder 52 is a low pressure spraying road surface construction device characterized in that the heating unit 53 is formed in the coil form of the injection tube (40). The method of claim 4, wherein The injector nozzle 20 has a one-sided injection contact surface 22a having a straight shape on the front side of the circular injection hole 21 in the center and a trapezoidal other injection contact surface 23 formed to be inclined from the center to the rear side in the middle of the injector nozzle 20. Low pressure spray road marking construction, characterized in that formed in parallel integrally spaced apart from each other.

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